Commit | Line | Data |
---|---|---|
284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
c04cbc3b | 2 | Copyright (C) 1985,86,87,88,89,93,94,95,96 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
284f4730 JB |
20 | |
21 | /* Allow config.h to undefine symbols found here. */ | |
22 | #include <signal.h> | |
23 | ||
18160b98 | 24 | #include <config.h> |
284f4730 | 25 | #include <stdio.h> |
284f4730 JB |
26 | #include "termchar.h" |
27 | #include "termopts.h" | |
28 | #include "lisp.h" | |
29 | #include "termhooks.h" | |
30 | #include "macros.h" | |
ff11dfa1 | 31 | #include "frame.h" |
284f4730 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "buffer.h" | |
35 | #include "disptab.h" | |
f4255cd1 | 36 | #include "dispextern.h" |
284f4730 | 37 | #include "keyboard.h" |
497ba7a1 | 38 | #include "intervals.h" |
9ac0d9e0 | 39 | #include "blockinput.h" |
284f4730 JB |
40 | #include <setjmp.h> |
41 | #include <errno.h> | |
42 | ||
80e4aa30 RS |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #include <time.h> | |
46 | #else /* not MSDOS */ | |
284f4730 JB |
47 | #ifndef VMS |
48 | #include <sys/ioctl.h> | |
284f4730 | 49 | #endif |
80e4aa30 | 50 | #endif /* not MSDOS */ |
284f4730 | 51 | |
52baf19e | 52 | #include "syssignal.h" |
6ef5b54f | 53 | #include "systty.h" |
52baf19e | 54 | |
c5e3b6c5 RS |
55 | /* This is to get the definitions of the XK_ symbols. */ |
56 | #ifdef HAVE_X_WINDOWS | |
57 | #include "xterm.h" | |
58 | #endif | |
59 | ||
e98a93eb GV |
60 | #ifdef HAVE_NTGUI |
61 | #include "w32term.h" | |
62 | #endif /* HAVE_NTGUI */ | |
63 | ||
0c2611c5 RS |
64 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
65 | #include "systime.h" | |
66 | ||
52baf19e JB |
67 | extern int errno; |
68 | ||
9ac0d9e0 JB |
69 | /* Variables for blockinput.h: */ |
70 | ||
71 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 72 | int interrupt_input_blocked; |
9ac0d9e0 JB |
73 | |
74 | /* Nonzero means an input interrupt has arrived | |
75 | during the current critical section. */ | |
63927c41 | 76 | int interrupt_input_pending; |
9ac0d9e0 JB |
77 | |
78 | ||
437f6112 RS |
79 | /* File descriptor to use for input. */ |
80 | extern int input_fd; | |
284f4730 | 81 | |
e98a93eb | 82 | #ifdef HAVE_WINDOW_SYSTEM |
284f4730 JB |
83 | /* Make all keyboard buffers much bigger when using X windows. */ |
84 | #define KBD_BUFFER_SIZE 4096 | |
85 | #else /* No X-windows, character input */ | |
86 | #define KBD_BUFFER_SIZE 256 | |
87 | #endif /* No X-windows */ | |
88 | ||
89 | /* Following definition copied from eval.c */ | |
90 | ||
91 | struct backtrace | |
92 | { | |
93 | struct backtrace *next; | |
94 | Lisp_Object *function; | |
95 | Lisp_Object *args; /* Points to vector of args. */ | |
96 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
97 | args points to slot holding list of | |
98 | unevalled args */ | |
99 | char evalargs; | |
100 | }; | |
101 | ||
c5fdd383 KH |
102 | #ifdef MULTI_KBOARD |
103 | KBOARD *initial_kboard; | |
104 | KBOARD *current_kboard; | |
105 | KBOARD *all_kboards; | |
1e8bd3da | 106 | int single_kboard; |
6c6083a9 | 107 | #else |
c5fdd383 | 108 | KBOARD the_only_kboard; |
6c6083a9 | 109 | #endif |
612b78ef | 110 | |
284f4730 JB |
111 | /* Non-nil disable property on a command means |
112 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 113 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
114 | |
115 | #define NUM_RECENT_KEYS (100) | |
116 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
117 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 118 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 119 | |
6569cc8d JB |
120 | /* Vector holding the key sequence that invoked the current command. |
121 | It is reused for each command, and it may be longer than the current | |
122 | sequence; this_command_key_count indicates how many elements | |
123 | actually mean something. | |
124 | It's easier to staticpro a single Lisp_Object than an array. */ | |
125 | Lisp_Object this_command_keys; | |
126 | int this_command_key_count; | |
284f4730 | 127 | |
6321824f RS |
128 | /* Number of elements of this_command_keys |
129 | that precede this key sequence. */ | |
130 | int this_single_command_key_start; | |
131 | ||
71918b75 RS |
132 | /* Record values of this_command_key_count and echo_length () |
133 | before this command was read. */ | |
134 | static int before_command_key_count; | |
135 | static int before_command_echo_length; | |
136 | /* Values of before_command_key_count and before_command_echo_length | |
137 | saved by reset-this-command-lengths. */ | |
138 | static int before_command_key_count_1; | |
139 | static int before_command_echo_length_1; | |
140 | /* Flag set by reset-this-command-lengths, | |
141 | saying to reset the lengths when add_command_key is called. */ | |
142 | static int before_command_restore_flag; | |
143 | ||
284f4730 JB |
144 | extern int minbuf_level; |
145 | ||
146 | extern struct backtrace *backtrace_list; | |
147 | ||
148 | /* Nonzero means do menu prompting. */ | |
149 | static int menu_prompting; | |
150 | ||
151 | /* Character to see next line of menu prompt. */ | |
152 | static Lisp_Object menu_prompt_more_char; | |
153 | ||
154 | /* For longjmp to where kbd input is being done. */ | |
155 | static jmp_buf getcjmp; | |
156 | ||
157 | /* True while doing kbd input. */ | |
158 | int waiting_for_input; | |
159 | ||
160 | /* True while displaying for echoing. Delays C-g throwing. */ | |
161 | static int echoing; | |
162 | ||
1fc93d49 RS |
163 | /* True means we can start echoing at the next input pause |
164 | even though there is something in the echo area. */ | |
0c04a67e | 165 | static char *ok_to_echo_at_next_pause; |
1fc93d49 | 166 | |
03361bcc RS |
167 | /* Nonzero means disregard local maps for the menu bar. */ |
168 | static int inhibit_local_menu_bar_menus; | |
169 | ||
80e4aa30 | 170 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
171 | int immediate_quit; |
172 | ||
173 | /* Character to recognize as the help char. */ | |
7e85b935 | 174 | Lisp_Object Vhelp_char; |
284f4730 | 175 | |
ecb7cb34 KH |
176 | /* List of other event types to recognize as meaning "help". */ |
177 | Lisp_Object Vhelp_event_list; | |
178 | ||
284f4730 JB |
179 | /* Form to execute when help char is typed. */ |
180 | Lisp_Object Vhelp_form; | |
181 | ||
7e85b935 RS |
182 | /* Command to run when the help character follows a prefix key. */ |
183 | Lisp_Object Vprefix_help_command; | |
184 | ||
9f9c0e27 RS |
185 | /* List of items that should move to the end of the menu bar. */ |
186 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 187 | |
6526ab49 RS |
188 | /* Non-nil means show the equivalent key-binding for |
189 | any M-x command that has one. | |
190 | The value can be a length of time to show the message for. | |
191 | If the value is non-nil and not a number, we wait 2 seconds. */ | |
192 | Lisp_Object Vsuggest_key_bindings; | |
193 | ||
284f4730 JB |
194 | /* Character that causes a quit. Normally C-g. |
195 | ||
196 | If we are running on an ordinary terminal, this must be an ordinary | |
197 | ASCII char, since we want to make it our interrupt character. | |
198 | ||
199 | If we are not running on an ordinary terminal, it still needs to be | |
200 | an ordinary ASCII char. This character needs to be recognized in | |
201 | the input interrupt handler. At this point, the keystroke is | |
202 | represented as a struct input_event, while the desired quit | |
203 | character is specified as a lispy event. The mapping from struct | |
204 | input_events to lispy events cannot run in an interrupt handler, | |
205 | and the reverse mapping is difficult for anything but ASCII | |
206 | keystrokes. | |
207 | ||
208 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
209 | ASCII character. */ | |
210 | int quit_char; | |
211 | ||
212 | extern Lisp_Object current_global_map; | |
213 | extern int minibuf_level; | |
214 | ||
9dd3131c RS |
215 | /* If non-nil, this is a map that overrides all other local maps. */ |
216 | Lisp_Object Voverriding_local_map; | |
217 | ||
d0a49716 RS |
218 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
219 | Lisp_Object Voverriding_local_map_menu_flag; | |
220 | ||
7f07d5ca RS |
221 | /* Keymap that defines special misc events that should |
222 | be processed immediately at a low level. */ | |
223 | Lisp_Object Vspecial_event_map; | |
224 | ||
284f4730 JB |
225 | /* Current depth in recursive edits. */ |
226 | int command_loop_level; | |
227 | ||
228 | /* Total number of times command_loop has read a key sequence. */ | |
229 | int num_input_keys; | |
230 | ||
231 | /* Last input character read as a command. */ | |
232 | Lisp_Object last_command_char; | |
233 | ||
7d6de002 RS |
234 | /* Last input character read as a command, not counting menus |
235 | reached by the mouse. */ | |
236 | Lisp_Object last_nonmenu_event; | |
237 | ||
284f4730 JB |
238 | /* Last input character read for any purpose. */ |
239 | Lisp_Object last_input_char; | |
240 | ||
dbc4e1c1 | 241 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 242 | Lisp_Object Vunread_command_events; |
284f4730 | 243 | |
86e5706b RS |
244 | /* If not -1, an event to be read as subsequent command input. */ |
245 | int unread_command_char; | |
246 | ||
cd21b839 JB |
247 | /* If not Qnil, this is a switch-frame event which we decided to put |
248 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 249 | next command input, after any unread_command_events. |
8f805655 JB |
250 | |
251 | read_key_sequence uses this to delay switch-frame events until the | |
252 | end of the key sequence; Fread_char uses it to put off switch-frame | |
253 | events until a non-ASCII event is acceptable as input. */ | |
254 | Lisp_Object unread_switch_frame; | |
cd21b839 | 255 | |
9fa4395d RS |
256 | /* A mask of extra modifier bits to put into every keyboard char. */ |
257 | int extra_keyboard_modifiers; | |
258 | ||
284f4730 JB |
259 | /* Char to use as prefix when a meta character is typed in. |
260 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
261 | ||
262 | Lisp_Object meta_prefix_char; | |
263 | ||
264 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
265 | static int last_non_minibuf_size; | |
266 | ||
06ef7355 | 267 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
268 | static Lisp_Object Vauto_save_timeout; |
269 | ||
270 | /* Total number of times read_char has returned. */ | |
271 | int num_input_chars; | |
272 | ||
51172b6d RS |
273 | /* Total number of times read_char has returned, outside of macros. */ |
274 | int num_nonmacro_input_chars; | |
275 | ||
284f4730 JB |
276 | /* Auto-save automatically when this many characters have been typed |
277 | since the last time. */ | |
278 | ||
279 | static int auto_save_interval; | |
280 | ||
51172b6d | 281 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
282 | |
283 | int last_auto_save; | |
284 | ||
284f4730 | 285 | /* The command being executed by the command loop. |
6c7178b9 KH |
286 | Commands may set this, and the value set will be copied into |
287 | current_kboard->Vlast_command instead of the actual command. */ | |
284f4730 JB |
288 | Lisp_Object this_command; |
289 | ||
b453f72e KH |
290 | /* The value of point when the last command was executed. */ |
291 | int last_point_position; | |
292 | ||
047688cb RS |
293 | /* The buffer that was current when the last command was started. */ |
294 | Lisp_Object last_point_position_buffer; | |
295 | ||
4c52b668 KH |
296 | /* The frame in which the last input event occurred, or Qmacro if the |
297 | last event came from a macro. We use this to determine when to | |
298 | generate switch-frame events. This may be cleared by functions | |
299 | like Fselect_frame, to make sure that a switch-frame event is | |
300 | generated by the next character. */ | |
301 | Lisp_Object internal_last_event_frame; | |
4c52b668 KH |
302 | |
303 | /* A user-visible version of the above, intended to allow users to | |
304 | figure out where the last event came from, if the event doesn't | |
305 | carry that information itself (i.e. if it was a character). */ | |
306 | Lisp_Object Vlast_event_frame; | |
307 | ||
1113d9db JB |
308 | /* The timestamp of the last input event we received from the X server. |
309 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
310 | unsigned long last_event_timestamp; |
311 | ||
312 | Lisp_Object Qself_insert_command; | |
313 | Lisp_Object Qforward_char; | |
314 | Lisp_Object Qbackward_char; | |
e58aa385 | 315 | Lisp_Object Qundefined; |
284f4730 JB |
316 | |
317 | /* read_key_sequence stores here the command definition of the | |
318 | key sequence that it reads. */ | |
319 | Lisp_Object read_key_sequence_cmd; | |
320 | ||
321 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
322 | Lisp_Object Vtop_level; | |
323 | ||
324 | /* User-supplied string to translate input characters through. */ | |
325 | Lisp_Object Vkeyboard_translate_table; | |
326 | ||
327 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
328 | extern Lisp_Object Vfunction_key_map; | |
329 | ||
e0301c07 RS |
330 | /* Another keymap that maps key sequences into key sequences. |
331 | This one takes precedence over ordinary definitions. */ | |
332 | extern Lisp_Object Vkey_translation_map; | |
a612e298 | 333 | |
86e5706b RS |
334 | /* Non-nil means deactivate the mark at end of this command. */ |
335 | Lisp_Object Vdeactivate_mark; | |
336 | ||
48e416d4 RS |
337 | /* Menu bar specified in Lucid Emacs fashion. */ |
338 | ||
339 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
340 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
341 | ||
86e5706b | 342 | /* Hooks to run before and after each command. */ |
59aadc81 RS |
343 | Lisp_Object Qpre_command_hook, Vpre_command_hook; |
344 | Lisp_Object Qpost_command_hook, Vpost_command_hook; | |
40932d1a | 345 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
59aadc81 RS |
346 | /* Hook run after a command if there's no more input soon. */ |
347 | Lisp_Object Qpost_command_idle_hook, Vpost_command_idle_hook; | |
348 | ||
349 | /* Delay time in microseconds before running post-command-idle-hook. */ | |
350 | int post_command_idle_delay; | |
86e5706b | 351 | |
8a792f3a RS |
352 | /* List of deferred actions to be performed at a later time. |
353 | The precise format isn't relevant here; we just check whether it is nil. */ | |
354 | Lisp_Object Vdeferred_action_list; | |
355 | ||
356 | /* Function to call to handle deferred actions, when there are any. */ | |
357 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 358 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 359 | |
284f4730 JB |
360 | /* File in which we write all commands we read. */ |
361 | FILE *dribble; | |
362 | ||
363 | /* Nonzero if input is available. */ | |
364 | int input_pending; | |
365 | ||
b04904fb RS |
366 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
367 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
368 | ||
284f4730 JB |
369 | int meta_key; |
370 | ||
371 | extern char *pending_malloc_warning; | |
372 | ||
beecf6a1 KH |
373 | /* Circular buffer for pre-read keyboard input. */ |
374 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
375 | ||
376 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
377 | ||
378 | The interrupt-level event handlers will never enqueue an event on a | |
379 | frame which is not in Vframe_list, and once an event is dequeued, | |
380 | internal_last_event_frame or the event itself points to the frame. | |
381 | So that's all fine. | |
382 | ||
383 | But while the event is sitting in the queue, it's completely | |
384 | unprotected. Suppose the user types one command which will run for | |
385 | a while and then delete a frame, and then types another event at | |
386 | the frame that will be deleted, before the command gets around to | |
387 | it. Suppose there are no references to this frame elsewhere in | |
388 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
389 | have an event referring to a freed frame, which will crash Emacs | |
390 | when it is dequeued. | |
391 | ||
392 | Similar things happen when an event on a scroll bar is enqueued; the | |
393 | window may be deleted while the event is in the queue. | |
394 | ||
395 | So, we use this vector to protect the frame_or_window field in the | |
396 | event queue. That way, they'll be dequeued as dead frames or | |
397 | windows, but still valid lisp objects. | |
398 | ||
399 | If kbd_buffer[i].kind != no_event, then | |
400 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
401 | == kbd_buffer[i].frame_or_window. */ | |
402 | static Lisp_Object kbd_buffer_frame_or_window; | |
403 | ||
404 | /* Pointer to next available character in kbd_buffer. | |
405 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
406 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
407 | next available char is in kbd_buffer[0]. */ | |
408 | static struct input_event *kbd_fetch_ptr; | |
409 | ||
410 | /* Pointer to next place to store character in kbd_buffer. This | |
411 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
412 | character should go in kbd_buffer[0]. */ | |
413 | static volatile struct input_event *kbd_store_ptr; | |
414 | ||
415 | /* The above pair of variables forms a "queue empty" flag. When we | |
416 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
417 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
418 | there is input available iff the two pointers are not equal. | |
419 | ||
420 | Why not just have a flag set and cleared by the enqueuing and | |
421 | dequeuing functions? Such a flag could be screwed up by interrupts | |
422 | at inopportune times. */ | |
423 | ||
f3253854 | 424 | /* If this flag is non-nil, we check mouse_moved to see when the |
a9d77f1f RS |
425 | mouse moves, and motion events will appear in the input stream. |
426 | Otherwise, mouse motion is ignored. */ | |
427 | static Lisp_Object do_mouse_tracking; | |
284f4730 | 428 | |
284f4730 JB |
429 | /* Symbols to head events. */ |
430 | Lisp_Object Qmouse_movement; | |
3c370943 | 431 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 432 | Lisp_Object Qswitch_frame; |
bbdc2092 | 433 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
434 | Lisp_Object Qiconify_frame; |
435 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 436 | |
284f4730 JB |
437 | /* Symbols to denote kinds of events. */ |
438 | Lisp_Object Qfunction_key; | |
439 | Lisp_Object Qmouse_click; | |
c04cbc3b | 440 | Lisp_Object Qtimer_event; |
284f4730 | 441 | /* Lisp_Object Qmouse_movement; - also an event header */ |
284f4730 JB |
442 | |
443 | /* Properties of event headers. */ | |
444 | Lisp_Object Qevent_kind; | |
88cb0656 | 445 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 446 | |
598a9fa7 JB |
447 | Lisp_Object Qmenu_enable; |
448 | ||
0a7f1fc0 JB |
449 | /* An event header symbol HEAD may have a property named |
450 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
451 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
452 | mask of modifiers applied to it. If present, this is used to help | |
453 | speed up parse_modifiers. */ | |
454 | Lisp_Object Qevent_symbol_element_mask; | |
455 | ||
456 | /* An unmodified event header BASE may have a property named | |
457 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
458 | modified versions of BASE. If present, this helps speed up | |
459 | apply_modifiers. */ | |
460 | Lisp_Object Qmodifier_cache; | |
461 | ||
5ec75a55 | 462 | /* Symbols to use for parts of windows. */ |
284f4730 | 463 | Lisp_Object Qmode_line; |
e5d77022 | 464 | Lisp_Object Qvertical_line; |
3c370943 | 465 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
466 | Lisp_Object Qmenu_bar; |
467 | ||
468 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 469 | |
f4255cd1 JB |
470 | Lisp_Object recursive_edit_unwind (), command_loop (); |
471 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 472 | Lisp_Object Qextended_command_history; |
c04cbc3b | 473 | EMACS_TIME timer_check (); |
284f4730 | 474 | |
2c834fb3 KH |
475 | extern char *x_get_keysym_name (); |
476 | ||
f4eef8b4 RS |
477 | Lisp_Object Qpolling_period; |
478 | ||
d9d4c147 | 479 | /* List of absolute timers. Appears in order of next scheduled event. */ |
c04cbc3b RS |
480 | Lisp_Object Vtimer_list; |
481 | ||
d9d4c147 KH |
482 | /* List of idle time timers. Appears in order of next scheduled event. */ |
483 | Lisp_Object Vtimer_idle_list; | |
484 | ||
87dd9b9b RS |
485 | /* Incremented whenever a timer is run. */ |
486 | int timers_run; | |
487 | ||
a9f16aa9 KH |
488 | extern Lisp_Object Vprint_level, Vprint_length; |
489 | ||
ffd56f97 JB |
490 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
491 | happens. */ | |
492 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
493 | |
494 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
495 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
496 | int interrupt_input; | |
497 | ||
498 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
499 | int interrupts_deferred; | |
500 | ||
87dd9b9b | 501 | /* Nonzero means use ^S/^Q for flow control. */ |
284f4730 JB |
502 | int flow_control; |
503 | ||
284f4730 JB |
504 | /* Allow m- file to inhibit use of FIONREAD. */ |
505 | #ifdef BROKEN_FIONREAD | |
506 | #undef FIONREAD | |
507 | #endif | |
508 | ||
509 | /* We are unable to use interrupts if FIONREAD is not available, | |
510 | so flush SIGIO so we won't try. */ | |
511 | #ifndef FIONREAD | |
512 | #ifdef SIGIO | |
513 | #undef SIGIO | |
514 | #endif | |
515 | #endif | |
516 | ||
e98a93eb | 517 | /* If we support a window system, turn on the code to poll periodically |
34f04431 | 518 | to detect C-g. It isn't actually used when doing interrupt input. */ |
e98a93eb | 519 | #ifdef HAVE_WINDOW_SYSTEM |
284f4730 JB |
520 | #define POLL_FOR_INPUT |
521 | #endif | |
284f4730 JB |
522 | \f |
523 | /* Global variable declarations. */ | |
524 | ||
525 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
526 | void (*keyboard_init_hook) (); | |
527 | ||
528 | static int read_avail_input (); | |
529 | static void get_input_pending (); | |
9fd7d808 | 530 | static int readable_events (); |
8150596a RS |
531 | static Lisp_Object read_char_x_menu_prompt (); |
532 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 | 533 | static Lisp_Object make_lispy_event (); |
514354e9 | 534 | #ifdef HAVE_MOUSE |
a612e298 | 535 | static Lisp_Object make_lispy_movement (); |
514354e9 | 536 | #endif |
a612e298 RS |
537 | static Lisp_Object modify_event_symbol (); |
538 | static Lisp_Object make_lispy_switch_frame (); | |
3d31316f | 539 | static int parse_solitary_modifier (); |
284f4730 JB |
540 | |
541 | /* > 0 if we are to echo keystrokes. */ | |
542 | static int echo_keystrokes; | |
543 | ||
8026024c KH |
544 | /* Nonzero means don't try to suspend even if the operating system seems |
545 | to support it. */ | |
546 | static int cannot_suspend; | |
547 | ||
284f4730 JB |
548 | #define min(a,b) ((a)<(b)?(a):(b)) |
549 | #define max(a,b) ((a)>(b)?(a):(b)) | |
550 | ||
551 | /* Install the string STR as the beginning of the string of echoing, | |
552 | so that it serves as a prompt for the next character. | |
553 | Also start echoing. */ | |
554 | ||
555 | echo_prompt (str) | |
556 | char *str; | |
557 | { | |
558 | int len = strlen (str); | |
7a80a6f6 | 559 | |
ba72822c KH |
560 | if (len > ECHOBUFSIZE - 4) |
561 | len = ECHOBUFSIZE - 4; | |
c5fdd383 KH |
562 | bcopy (str, current_kboard->echobuf, len); |
563 | current_kboard->echoptr = current_kboard->echobuf + len; | |
564 | *current_kboard->echoptr = '\0'; | |
284f4730 | 565 | |
c5fdd383 | 566 | current_kboard->echo_after_prompt = len; |
7a80a6f6 | 567 | |
3dbd9ee4 | 568 | echo_now (); |
284f4730 JB |
569 | } |
570 | ||
df0f2ba1 | 571 | /* Add C to the echo string, if echoing is going on. |
284f4730 JB |
572 | C can be a character, which is printed prettily ("M-C-x" and all that |
573 | jazz), or a symbol, whose name is printed. */ | |
574 | ||
575 | echo_char (c) | |
576 | Lisp_Object c; | |
577 | { | |
578 | extern char *push_key_description (); | |
579 | ||
c5fdd383 | 580 | if (current_kboard->immediate_echo) |
284f4730 | 581 | { |
c5fdd383 | 582 | char *ptr = current_kboard->echoptr; |
df0f2ba1 | 583 | |
c5fdd383 | 584 | if (ptr != current_kboard->echobuf) |
284f4730 JB |
585 | *ptr++ = ' '; |
586 | ||
587 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 588 | c = EVENT_HEAD (c); |
284f4730 | 589 | |
8c18cbfb | 590 | if (INTEGERP (c)) |
284f4730 | 591 | { |
c5fdd383 | 592 | if (ptr - current_kboard->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
593 | return; |
594 | ||
cb5df6ae | 595 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 596 | } |
8c18cbfb | 597 | else if (SYMBOLP (c)) |
284f4730 JB |
598 | { |
599 | struct Lisp_String *name = XSYMBOL (c)->name; | |
c5fdd383 | 600 | if ((ptr - current_kboard->echobuf) + name->size + 4 > ECHOBUFSIZE) |
284f4730 JB |
601 | return; |
602 | bcopy (name->data, ptr, name->size); | |
603 | ptr += name->size; | |
604 | } | |
605 | ||
c5fdd383 | 606 | if (current_kboard->echoptr == current_kboard->echobuf |
ecb7cb34 | 607 | && help_char_p (c)) |
284f4730 JB |
608 | { |
609 | strcpy (ptr, " (Type ? for further options)"); | |
610 | ptr += strlen (ptr); | |
611 | } | |
612 | ||
613 | *ptr = 0; | |
c5fdd383 | 614 | current_kboard->echoptr = ptr; |
284f4730 | 615 | |
3dbd9ee4 | 616 | echo_now (); |
284f4730 JB |
617 | } |
618 | } | |
619 | ||
620 | /* Temporarily add a dash to the end of the echo string if it's not | |
621 | empty, so that it serves as a mini-prompt for the very next character. */ | |
622 | ||
623 | echo_dash () | |
624 | { | |
c5fdd383 KH |
625 | if (!current_kboard->immediate_echo |
626 | && current_kboard->echoptr == current_kboard->echobuf) | |
284f4730 | 627 | return; |
7a80a6f6 | 628 | /* Do nothing if we just printed a prompt. */ |
c5fdd383 KH |
629 | if (current_kboard->echo_after_prompt |
630 | == current_kboard->echoptr - current_kboard->echobuf) | |
7a80a6f6 | 631 | return; |
4bafa972 | 632 | /* Do nothing if not echoing at all. */ |
c5fdd383 | 633 | if (current_kboard->echoptr == 0) |
4bafa972 | 634 | return; |
284f4730 JB |
635 | |
636 | /* Put a dash at the end of the buffer temporarily, | |
637 | but make it go away when the next character is added. */ | |
c5fdd383 KH |
638 | current_kboard->echoptr[0] = '-'; |
639 | current_kboard->echoptr[1] = 0; | |
284f4730 | 640 | |
3dbd9ee4 | 641 | echo_now (); |
284f4730 JB |
642 | } |
643 | ||
644 | /* Display the current echo string, and begin echoing if not already | |
645 | doing so. */ | |
646 | ||
3dbd9ee4 | 647 | echo_now () |
284f4730 | 648 | { |
c5fdd383 | 649 | if (!current_kboard->immediate_echo) |
284f4730 JB |
650 | { |
651 | int i; | |
c5fdd383 | 652 | current_kboard->immediate_echo = 1; |
284f4730 JB |
653 | |
654 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
655 | { |
656 | Lisp_Object c; | |
657 | c = XVECTOR (this_command_keys)->contents[i]; | |
658 | if (! (EVENT_HAS_PARAMETERS (c) | |
659 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
660 | echo_char (c); | |
661 | } | |
284f4730 JB |
662 | echo_dash (); |
663 | } | |
664 | ||
665 | echoing = 1; | |
c5fdd383 | 666 | message1_nolog (current_kboard->echobuf); |
284f4730 JB |
667 | echoing = 0; |
668 | ||
669 | if (waiting_for_input && !NILP (Vquit_flag)) | |
670 | quit_throw_to_read_char (); | |
671 | } | |
672 | ||
673 | /* Turn off echoing, for the start of a new command. */ | |
674 | ||
675 | cancel_echoing () | |
676 | { | |
c5fdd383 KH |
677 | current_kboard->immediate_echo = 0; |
678 | current_kboard->echoptr = current_kboard->echobuf; | |
679 | current_kboard->echo_after_prompt = -1; | |
1fc93d49 | 680 | ok_to_echo_at_next_pause = 0; |
284f4730 JB |
681 | } |
682 | ||
683 | /* Return the length of the current echo string. */ | |
684 | ||
685 | static int | |
686 | echo_length () | |
687 | { | |
c5fdd383 | 688 | return current_kboard->echoptr - current_kboard->echobuf; |
284f4730 JB |
689 | } |
690 | ||
691 | /* Truncate the current echo message to its first LEN chars. | |
692 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 693 | switches frames while entering a key sequence. */ |
284f4730 JB |
694 | |
695 | static void | |
696 | echo_truncate (len) | |
697 | int len; | |
698 | { | |
c5fdd383 KH |
699 | current_kboard->echobuf[len] = '\0'; |
700 | current_kboard->echoptr = current_kboard->echobuf + len; | |
40932d1a | 701 | truncate_echo_area (len); |
284f4730 JB |
702 | } |
703 | ||
704 | \f | |
705 | /* Functions for manipulating this_command_keys. */ | |
706 | static void | |
707 | add_command_key (key) | |
708 | Lisp_Object key; | |
709 | { | |
6569cc8d JB |
710 | int size = XVECTOR (this_command_keys)->size; |
711 | ||
71918b75 RS |
712 | /* If reset-this-command-length was called recently, obey it now. |
713 | See the doc string of that function for an explanation of why. */ | |
714 | if (before_command_restore_flag) | |
715 | { | |
716 | this_command_key_count = before_command_key_count_1; | |
6321824f RS |
717 | if (this_command_key_count < this_single_command_key_start) |
718 | this_single_command_key_start = this_command_key_count; | |
71918b75 RS |
719 | echo_truncate (before_command_echo_length_1); |
720 | before_command_restore_flag = 0; | |
721 | } | |
722 | ||
6569cc8d | 723 | if (this_command_key_count >= size) |
284f4730 | 724 | { |
9b8eb840 | 725 | Lisp_Object new_keys; |
6569cc8d | 726 | |
9b8eb840 | 727 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
728 | bcopy (XVECTOR (this_command_keys)->contents, |
729 | XVECTOR (new_keys)->contents, | |
8f805655 | 730 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
731 | |
732 | this_command_keys = new_keys; | |
284f4730 | 733 | } |
6569cc8d JB |
734 | |
735 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
736 | } |
737 | \f | |
738 | Lisp_Object | |
739 | recursive_edit_1 () | |
740 | { | |
741 | int count = specpdl_ptr - specpdl; | |
742 | Lisp_Object val; | |
743 | ||
744 | if (command_loop_level > 0) | |
745 | { | |
746 | specbind (Qstandard_output, Qt); | |
747 | specbind (Qstandard_input, Qt); | |
748 | } | |
749 | ||
750 | val = command_loop (); | |
751 | if (EQ (val, Qt)) | |
752 | Fsignal (Qquit, Qnil); | |
cb252880 RS |
753 | /* Handle throw from read_minibuf when using minibuffer |
754 | while it's active but we're in another window. */ | |
755 | if (STRINGP (val)) | |
756 | Fsignal (Qerror, Fcons (val, Qnil)); | |
284f4730 | 757 | |
cb5df6ae | 758 | return unbind_to (count, Qnil); |
284f4730 JB |
759 | } |
760 | ||
761 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 762 | |
284f4730 JB |
763 | record_auto_save () |
764 | { | |
51172b6d | 765 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 766 | } |
5846638c RS |
767 | |
768 | /* Make an auto save happen as soon as possible at command level. */ | |
769 | ||
770 | force_auto_save_soon () | |
771 | { | |
772 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
773 | |
774 | record_asynch_buffer_change (); | |
5846638c | 775 | } |
284f4730 | 776 | \f |
284f4730 JB |
777 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
778 | "Invoke the editor command loop recursively.\n\ | |
779 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
780 | that tells this function to return.\n\ | |
781 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
782 | This function is called by the editor initialization to begin editing.") | |
783 | () | |
784 | { | |
785 | int count = specpdl_ptr - specpdl; | |
786 | Lisp_Object val; | |
787 | ||
788 | command_loop_level++; | |
789 | update_mode_lines = 1; | |
790 | ||
791 | record_unwind_protect (recursive_edit_unwind, | |
792 | (command_loop_level | |
793 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
794 | ? Fcurrent_buffer () | |
795 | : Qnil); | |
796 | recursive_edit_1 (); | |
797 | return unbind_to (count, Qnil); | |
798 | } | |
799 | ||
800 | Lisp_Object | |
801 | recursive_edit_unwind (buffer) | |
802 | Lisp_Object buffer; | |
803 | { | |
804 | if (!NILP (buffer)) | |
805 | Fset_buffer (buffer); | |
806 | ||
807 | command_loop_level--; | |
808 | update_mode_lines = 1; | |
809 | return Qnil; | |
810 | } | |
811 | \f | |
604ccd1d | 812 | static void |
1e8bd3da | 813 | any_kboard_state () |
604ccd1d | 814 | { |
1e8bd3da RS |
815 | #ifdef MULTI_KBOARD |
816 | #if 0 /* Theory: if there's anything in Vunread_command_events, | |
817 | it will right away be read by read_key_sequence, | |
818 | and then if we do switch KBOARDS, it will go into the side | |
819 | queue then. So we don't need to do anything special here -- rms. */ | |
604ccd1d | 820 | if (CONSP (Vunread_command_events)) |
4524b161 | 821 | { |
c5fdd383 KH |
822 | current_kboard->kbd_queue |
823 | = nconc2 (Vunread_command_events, current_kboard->kbd_queue); | |
824 | current_kboard->kbd_queue_has_data = 1; | |
4524b161 | 825 | } |
604ccd1d | 826 | Vunread_command_events = Qnil; |
1e8bd3da RS |
827 | #endif |
828 | single_kboard = 0; | |
829 | #endif | |
604ccd1d | 830 | } |
1e8bd3da RS |
831 | |
832 | /* Switch to the single-kboard state, making current_kboard | |
833 | the only KBOARD from which further input is accepted. */ | |
834 | ||
835 | void | |
836 | single_kboard_state () | |
837 | { | |
838 | #ifdef MULTI_KBOARD | |
839 | single_kboard = 1; | |
604ccd1d | 840 | #endif |
1e8bd3da RS |
841 | } |
842 | ||
843 | /* Maintain a stack of kboards, so other parts of Emacs | |
844 | can switch temporarily to the kboard of a given frame | |
845 | and then revert to the previous status. */ | |
846 | ||
847 | struct kboard_stack | |
848 | { | |
849 | KBOARD *kboard; | |
850 | struct kboard_stack *next; | |
851 | }; | |
852 | ||
853 | static struct kboard_stack *kboard_stack; | |
854 | ||
855 | void | |
856 | push_frame_kboard (f) | |
857 | FRAME_PTR f; | |
858 | { | |
ab48365b | 859 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
860 | struct kboard_stack *p |
861 | = (struct kboard_stack *) xmalloc (sizeof (struct kboard_stack)); | |
862 | ||
863 | p->next = kboard_stack; | |
864 | p->kboard = current_kboard; | |
865 | kboard_stack = p; | |
866 | ||
867 | current_kboard = FRAME_KBOARD (f); | |
ab48365b | 868 | #endif |
1e8bd3da RS |
869 | } |
870 | ||
871 | void | |
872 | pop_frame_kboard () | |
873 | { | |
ab48365b | 874 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
875 | struct kboard_stack *p = kboard_stack; |
876 | current_kboard = p->kboard; | |
877 | kboard_stack = p->next; | |
878 | xfree (p); | |
ab48365b | 879 | #endif |
1e8bd3da RS |
880 | } |
881 | \f | |
882 | /* Handle errors that are not handled at inner levels | |
883 | by printing an error message and returning to the editor command loop. */ | |
604ccd1d | 884 | |
284f4730 JB |
885 | Lisp_Object |
886 | cmd_error (data) | |
887 | Lisp_Object data; | |
a1341f75 | 888 | { |
a9f16aa9 | 889 | Lisp_Object old_level, old_length; |
e881d8b2 RS |
890 | char macroerror[50]; |
891 | ||
892 | if (!NILP (executing_macro)) | |
893 | { | |
894 | if (executing_macro_iterations == 1) | |
895 | sprintf (macroerror, "After 1 kbd macro iteration: "); | |
896 | else | |
897 | sprintf (macroerror, "After %d kbd macro iterations: ", | |
898 | executing_macro_iterations); | |
899 | } | |
900 | else | |
901 | *macroerror = 0; | |
a9f16aa9 | 902 | |
a1341f75 RS |
903 | Vstandard_output = Qt; |
904 | Vstandard_input = Qt; | |
905 | Vexecuting_macro = Qnil; | |
9f58e89e | 906 | executing_macro = Qnil; |
d8bcf58e | 907 | current_kboard->Vprefix_arg = Qnil; |
df0f2ba1 | 908 | cancel_echoing (); |
a9f16aa9 KH |
909 | |
910 | /* Avoid unquittable loop if data contains a circular list. */ | |
911 | old_level = Vprint_level; | |
912 | old_length = Vprint_length; | |
0c04a67e RS |
913 | XSETFASTINT (Vprint_level, 10); |
914 | XSETFASTINT (Vprint_length, 10); | |
e881d8b2 | 915 | cmd_error_internal (data, macroerror); |
a9f16aa9 KH |
916 | Vprint_level = old_level; |
917 | Vprint_length = old_length; | |
a1341f75 RS |
918 | |
919 | Vquit_flag = Qnil; | |
920 | ||
921 | Vinhibit_quit = Qnil; | |
c5fdd383 | 922 | #ifdef MULTI_KBOARD |
1e8bd3da | 923 | any_kboard_state (); |
ff4b06d3 | 924 | #endif |
a1341f75 RS |
925 | |
926 | return make_number (0); | |
927 | } | |
928 | ||
929 | cmd_error_internal (data, context) | |
930 | Lisp_Object data; | |
931 | char *context; | |
284f4730 | 932 | { |
284f4730 | 933 | Lisp_Object stream; |
284f4730 JB |
934 | |
935 | Vquit_flag = Qnil; | |
936 | Vinhibit_quit = Qt; | |
284f4730 JB |
937 | echo_area_glyphs = 0; |
938 | ||
ff11dfa1 | 939 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
940 | yet, or we're not interactive, it's best to dump this message out |
941 | to stderr and exit. */ | |
ff11dfa1 | 942 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
943 | || noninteractive) |
944 | stream = Qexternal_debugging_output; | |
945 | else | |
946 | { | |
947 | Fdiscard_input (); | |
948 | bitch_at_user (); | |
949 | stream = Qt; | |
950 | } | |
951 | ||
a1341f75 RS |
952 | if (context != 0) |
953 | write_string_1 (context, -1, stream); | |
954 | ||
22a51344 | 955 | print_error_message (data, stream); |
284f4730 | 956 | |
ff11dfa1 | 957 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 958 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 959 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
960 | || noninteractive) |
961 | { | |
962 | Fterpri (stream); | |
963 | Fkill_emacs (make_number (-1)); | |
964 | } | |
284f4730 JB |
965 | } |
966 | \f | |
967 | Lisp_Object command_loop_1 (); | |
968 | Lisp_Object command_loop_2 (); | |
969 | Lisp_Object top_level_1 (); | |
970 | ||
971 | /* Entry to editor-command-loop. | |
972 | This level has the catches for exiting/returning to editor command loop. | |
973 | It returns nil to exit recursive edit, t to abort it. */ | |
974 | ||
975 | Lisp_Object | |
976 | command_loop () | |
977 | { | |
978 | if (command_loop_level > 0 || minibuf_level > 0) | |
979 | { | |
980 | return internal_catch (Qexit, command_loop_2, Qnil); | |
981 | } | |
982 | else | |
983 | while (1) | |
984 | { | |
985 | internal_catch (Qtop_level, top_level_1, Qnil); | |
986 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
df0f2ba1 | 987 | |
284f4730 JB |
988 | /* End of file in -batch run causes exit here. */ |
989 | if (noninteractive) | |
990 | Fkill_emacs (Qt); | |
991 | } | |
992 | } | |
993 | ||
994 | /* Here we catch errors in execution of commands within the | |
995 | editing loop, and reenter the editing loop. | |
996 | When there is an error, cmd_error runs and returns a non-nil | |
997 | value to us. A value of nil means that cmd_loop_1 itself | |
998 | returned due to end of file (or end of kbd macro). */ | |
999 | ||
1000 | Lisp_Object | |
1001 | command_loop_2 () | |
1002 | { | |
1003 | register Lisp_Object val; | |
1004 | ||
1005 | do | |
1006 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
1007 | while (!NILP (val)); | |
1008 | ||
1009 | return Qnil; | |
1010 | } | |
1011 | ||
1012 | Lisp_Object | |
1013 | top_level_2 () | |
1014 | { | |
1015 | return Feval (Vtop_level); | |
1016 | } | |
1017 | ||
1018 | Lisp_Object | |
1019 | top_level_1 () | |
1020 | { | |
1021 | /* On entry to the outer level, run the startup file */ | |
1022 | if (!NILP (Vtop_level)) | |
1023 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
1024 | else if (!NILP (Vpurify_flag)) | |
1025 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
1026 | else | |
1027 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
1028 | return Qnil; | |
1029 | } | |
1030 | ||
1031 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
1032 | "Exit all recursive editing levels.") | |
1033 | () | |
1034 | { | |
1035 | Fthrow (Qtop_level, Qnil); | |
1036 | } | |
1037 | ||
1038 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
1039 | "Exit from the innermost recursive edit or minibuffer.") | |
1040 | () | |
1041 | { | |
1042 | if (command_loop_level > 0 || minibuf_level > 0) | |
1043 | Fthrow (Qexit, Qnil); | |
1044 | ||
1045 | error ("No recursive edit is in progress"); | |
1046 | } | |
1047 | ||
1048 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
1049 | "Abort the command that requested this recursive edit or minibuffer input.") | |
1050 | () | |
1051 | { | |
1052 | if (command_loop_level > 0 || minibuf_level > 0) | |
1053 | Fthrow (Qexit, Qt); | |
1054 | ||
1055 | error ("No recursive edit is in progress"); | |
1056 | } | |
1057 | \f | |
1058 | /* This is the actual command reading loop, | |
1059 | sans error-handling encapsulation. */ | |
1060 | ||
1061 | Lisp_Object Fcommand_execute (); | |
1062 | static int read_key_sequence (); | |
68f297c5 | 1063 | void safe_run_hooks (); |
284f4730 JB |
1064 | |
1065 | Lisp_Object | |
1066 | command_loop_1 () | |
1067 | { | |
48e416d4 | 1068 | Lisp_Object cmd, tem; |
284f4730 JB |
1069 | int lose; |
1070 | int nonundocount; | |
1071 | Lisp_Object keybuf[30]; | |
1072 | int i; | |
1073 | int no_redisplay; | |
1074 | int no_direct; | |
86e5706b RS |
1075 | int prev_modiff; |
1076 | struct buffer *prev_buffer; | |
c5fdd383 | 1077 | #ifdef MULTI_KBOARD |
1e8bd3da | 1078 | int was_locked = single_kboard; |
bded54dd | 1079 | #endif |
284f4730 | 1080 | |
d9b641bb | 1081 | current_kboard->Vprefix_arg = Qnil; |
86e5706b | 1082 | Vdeactivate_mark = Qnil; |
284f4730 | 1083 | waiting_for_input = 0; |
df0f2ba1 | 1084 | cancel_echoing (); |
284f4730 | 1085 | |
284f4730 JB |
1086 | nonundocount = 0; |
1087 | no_redisplay = 0; | |
1088 | this_command_key_count = 0; | |
6321824f | 1089 | this_single_command_key_start = 0; |
284f4730 | 1090 | |
a612e298 RS |
1091 | /* Make sure this hook runs after commands that get errors and |
1092 | throw to top level. */ | |
a98ea3f9 RS |
1093 | /* Note that the value cell will never directly contain nil |
1094 | if the symbol is a local variable. */ | |
e98a93eb | 1095 | if (!NILP (Vpost_command_hook) && !NILP (Vrun_hooks)) |
a98ea3f9 | 1096 | safe_run_hooks (Qpost_command_hook); |
a612e298 | 1097 | |
8a792f3a RS |
1098 | if (!NILP (Vdeferred_action_list)) |
1099 | call0 (Vdeferred_action_function); | |
1100 | ||
e98a93eb | 1101 | if (!NILP (Vpost_command_idle_hook) && !NILP (Vrun_hooks)) |
59aadc81 RS |
1102 | { |
1103 | if (NILP (Vunread_command_events) | |
1104 | && NILP (Vexecuting_macro) | |
1105 | && !NILP (sit_for (0, post_command_idle_delay, 0, 1))) | |
1106 | safe_run_hooks (Qpost_command_idle_hook); | |
1107 | } | |
1108 | ||
51d5a2c9 | 1109 | /* Do this after running Vpost_command_hook, for consistency. */ |
6c7178b9 | 1110 | current_kboard->Vlast_command = this_command; |
51d5a2c9 | 1111 | |
284f4730 JB |
1112 | while (1) |
1113 | { | |
284f4730 JB |
1114 | /* Make sure the current window's buffer is selected. */ |
1115 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1116 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1117 | ||
1118 | /* Display any malloc warning that just came out. Use while because | |
1119 | displaying one warning can cause another. */ | |
1120 | ||
1121 | while (pending_malloc_warning) | |
1122 | display_malloc_warning (); | |
1123 | ||
1124 | no_direct = 0; | |
1125 | ||
86e5706b RS |
1126 | Vdeactivate_mark = Qnil; |
1127 | ||
284f4730 | 1128 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1129 | wait 2 sec and redraw minibuffer. */ |
284f4730 | 1130 | |
93127526 RS |
1131 | if (minibuf_level && echo_area_glyphs |
1132 | && EQ (minibuf_window, echo_area_window)) | |
284f4730 | 1133 | { |
f1bed6d8 RS |
1134 | /* Bind inhibit-quit to t so that C-g gets read in |
1135 | rather than quitting back to the minibuffer. */ | |
1136 | int count = specpdl_ptr - specpdl; | |
1137 | specbind (Qinhibit_quit, Qt); | |
f1bed6d8 | 1138 | |
db08707d | 1139 | Fsit_for (make_number (2), Qnil, Qnil); |
e6aa7813 RS |
1140 | /* Clear the echo area. */ |
1141 | message2 (0); | |
1142 | ||
db08707d RS |
1143 | unbind_to (count, Qnil); |
1144 | ||
e6aa7813 | 1145 | /* If a C-g came in before, treat it as input now. */ |
284f4730 JB |
1146 | if (!NILP (Vquit_flag)) |
1147 | { | |
1148 | Vquit_flag = Qnil; | |
24597608 | 1149 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1150 | } |
1151 | } | |
1152 | ||
1153 | #ifdef C_ALLOCA | |
ff4b06d3 | 1154 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1155 | /* Since we can free the most stuff here. */ |
1156 | #endif /* C_ALLOCA */ | |
1157 | ||
8f805655 | 1158 | #if 0 |
8f805655 JB |
1159 | /* Select the frame that the last event came from. Usually, |
1160 | switch-frame events will take care of this, but if some lisp | |
1161 | code swallows a switch-frame event, we'll fix things up here. | |
1162 | Is this a good idea? */ | |
8c18cbfb | 1163 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1164 | && XFRAME (internal_last_event_frame) != selected_frame) |
1165 | Fselect_frame (internal_last_event_frame, Qnil); | |
284f4730 | 1166 | #endif |
48e416d4 RS |
1167 | /* If it has changed current-menubar from previous value, |
1168 | really recompute the menubar from the value. */ | |
a646e520 RS |
1169 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1170 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1171 | call0 (Qrecompute_lucid_menubar); |
1172 | ||
71918b75 RS |
1173 | before_command_key_count = this_command_key_count; |
1174 | before_command_echo_length = echo_length (); | |
1175 | ||
d7437ef6 RS |
1176 | this_command = Qnil; |
1177 | ||
8f805655 | 1178 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1179 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1180 | Qnil, 0, 1); | |
8f805655 JB |
1181 | |
1182 | ++num_input_keys; | |
1183 | ||
284f4730 JB |
1184 | /* Now we have read a key sequence of length I, |
1185 | or else I is 0 and we found end of file. */ | |
1186 | ||
1187 | if (i == 0) /* End of file -- happens only in */ | |
1188 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1189 | /* -1 means read_key_sequence got a menu that was rejected. |
1190 | Just loop around and read another command. */ | |
1191 | if (i == -1) | |
1192 | { | |
1193 | cancel_echoing (); | |
1194 | this_command_key_count = 0; | |
6321824f | 1195 | this_single_command_key_start = 0; |
ff4b06d3 | 1196 | goto finalize; |
dcc408a0 | 1197 | } |
284f4730 | 1198 | |
284f4730 JB |
1199 | last_command_char = keybuf[i - 1]; |
1200 | ||
75c0b143 RS |
1201 | /* If the previous command tried to force a specific window-start, |
1202 | forget about that, in case this command moves point far away | |
c422836d KH |
1203 | from that position. But also throw away beg_unchanged and |
1204 | end_unchanged information in that case, so that redisplay will | |
1205 | update the whole window properly. */ | |
1206 | if (!NILP (XWINDOW (selected_window)->force_start)) | |
1207 | { | |
1208 | XWINDOW (selected_window)->force_start = Qnil; | |
1209 | beg_unchanged = end_unchanged = 0; | |
1210 | } | |
75c0b143 | 1211 | |
284f4730 JB |
1212 | cmd = read_key_sequence_cmd; |
1213 | if (!NILP (Vexecuting_macro)) | |
1214 | { | |
1215 | if (!NILP (Vquit_flag)) | |
1216 | { | |
1217 | Vexecuting_macro = Qt; | |
1218 | QUIT; /* Make some noise. */ | |
1219 | /* Will return since macro now empty. */ | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1224 | cases identified below that set no_redisplay to 1. |
1225 | (actually, there's currently no way to prevent the redisplay, | |
1226 | and no_redisplay is ignored. | |
beecf6a1 | 1227 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1228 | no_redisplay = 0; |
1229 | ||
86e5706b RS |
1230 | prev_buffer = current_buffer; |
1231 | prev_modiff = MODIFF; | |
8746da95 | 1232 | last_point_position = PT; |
18cd2eeb | 1233 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1234 | |
284f4730 JB |
1235 | /* Execute the command. */ |
1236 | ||
86e5706b | 1237 | this_command = cmd; |
a98ea3f9 RS |
1238 | /* Note that the value cell will never directly contain nil |
1239 | if the symbol is a local variable. */ | |
e98a93eb | 1240 | if (!NILP (Vpre_command_hook) && !NILP (Vrun_hooks)) |
a98ea3f9 | 1241 | safe_run_hooks (Qpre_command_hook); |
86e5706b | 1242 | |
258bf746 | 1243 | if (NILP (this_command)) |
284f4730 JB |
1244 | { |
1245 | /* nil means key is undefined. */ | |
1246 | bitch_at_user (); | |
c5fdd383 | 1247 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 | 1248 | update_mode_lines = 1; |
d8bcf58e | 1249 | current_kboard->Vprefix_arg = Qnil; |
284f4730 JB |
1250 | } |
1251 | else | |
1252 | { | |
d8bcf58e | 1253 | if (NILP (current_kboard->Vprefix_arg) && ! no_direct) |
284f4730 JB |
1254 | { |
1255 | /* Recognize some common commands in common situations and | |
1256 | do them directly. */ | |
8001d352 | 1257 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 | 1258 | { |
51ad8a68 | 1259 | struct Lisp_Char_Table *dp |
284f4730 | 1260 | = window_display_table (XWINDOW (selected_window)); |
8001d352 KH |
1261 | lose = FETCH_CHAR (PT); |
1262 | SET_PT (PT + 1); | |
0f7a8fee | 1263 | if ((dp |
82ba47d7 | 1264 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1265 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1266 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1267 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1268 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1269 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1270 | >= MODIFF) | |
1271 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1272 | == PT - 1) |
284f4730 JB |
1273 | && !windows_or_buffers_changed |
1274 | && EQ (current_buffer->selective_display, Qnil) | |
1275 | && !detect_input_pending () | |
962ae636 | 1276 | && NILP (XWINDOW (selected_window)->column_number_displayed) |
284f4730 JB |
1277 | && NILP (Vexecuting_macro)) |
1278 | no_redisplay = direct_output_forward_char (1); | |
1279 | goto directly_done; | |
1280 | } | |
8001d352 | 1281 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 | 1282 | { |
51ad8a68 | 1283 | struct Lisp_Char_Table *dp |
284f4730 | 1284 | = window_display_table (XWINDOW (selected_window)); |
8001d352 KH |
1285 | SET_PT (PT - 1); |
1286 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1287 | if ((dp |
ca873d73 | 1288 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1289 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1290 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1291 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1292 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1293 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1294 | >= MODIFF) | |
1295 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1296 | == PT + 1) |
284f4730 JB |
1297 | && !windows_or_buffers_changed |
1298 | && EQ (current_buffer->selective_display, Qnil) | |
1299 | && !detect_input_pending () | |
962ae636 | 1300 | && NILP (XWINDOW (selected_window)->column_number_displayed) |
284f4730 JB |
1301 | && NILP (Vexecuting_macro)) |
1302 | no_redisplay = direct_output_forward_char (-1); | |
1303 | goto directly_done; | |
1304 | } | |
258bf746 | 1305 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1306 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1307 | && INTEGERP (last_command_char)) |
284f4730 JB |
1308 | { |
1309 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1310 | int value; |
284f4730 | 1311 | |
fc9cce4e RS |
1312 | if (NILP (Vexecuting_macro) |
1313 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1314 | { |
1315 | if (!nonundocount || nonundocount >= 20) | |
1316 | { | |
1317 | Fundo_boundary (); | |
1318 | nonundocount = 0; | |
1319 | } | |
1320 | nonundocount++; | |
1321 | } | |
fc9cce4e RS |
1322 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1323 | < MODIFF) | |
1324 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1325 | != PT) | |
4c61f38e | 1326 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1327 | || windows_or_buffers_changed |
1328 | || !EQ (current_buffer->selective_display, Qnil) | |
1329 | || detect_input_pending () | |
962ae636 | 1330 | || !NILP (XWINDOW (selected_window)->column_number_displayed) |
fc9cce4e RS |
1331 | || !NILP (Vexecuting_macro)); |
1332 | value = internal_self_insert (c, 0); | |
1333 | if (value) | |
1334 | lose = 1; | |
1335 | if (value == 2) | |
1336 | nonundocount = 0; | |
1337 | ||
1338 | if (!lose | |
1339 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 | 1340 | { |
51ad8a68 | 1341 | struct Lisp_Char_Table *dp |
284f4730 | 1342 | = window_display_table (XWINDOW (selected_window)); |
b8d9050d | 1343 | int lose = c; |
284f4730 | 1344 | |
0f7a8fee JB |
1345 | if (dp) |
1346 | { | |
9b8eb840 | 1347 | Lisp_Object obj; |
0f7a8fee | 1348 | |
9b8eb840 | 1349 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1350 | if (NILP (obj)) |
8e91f441 RS |
1351 | { |
1352 | /* Do it only for char codes | |
1353 | that by default display as themselves. */ | |
1354 | if (lose >= 0x20 && lose <= 0x7e) | |
1355 | no_redisplay = direct_output_for_insert (lose); | |
1356 | } | |
8c18cbfb | 1357 | else if (VECTORP (obj) |
054c8675 | 1358 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1359 | && (obj = XVECTOR (obj)->contents[0], |
1360 | INTEGERP (obj)) | |
054c8675 RS |
1361 | /* Insist face not specified in glyph. */ |
1362 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1363 | no_redisplay |
1364 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1365 | } |
1366 | else | |
1367 | { | |
1368 | if (lose >= 0x20 && lose <= 0x7e) | |
1369 | no_redisplay = direct_output_for_insert (lose); | |
1370 | } | |
284f4730 JB |
1371 | } |
1372 | goto directly_done; | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | /* Here for a command that isn't executed directly */ | |
1377 | ||
1378 | nonundocount = 0; | |
d8bcf58e | 1379 | if (NILP (current_kboard->Vprefix_arg)) |
284f4730 | 1380 | Fundo_boundary (); |
158f7532 | 1381 | Fcommand_execute (this_command, Qnil, Qnil, Qnil); |
284f4730 | 1382 | |
284f4730 | 1383 | } |
a764a753 | 1384 | directly_done: ; |
284f4730 JB |
1385 | |
1386 | /* If there is a prefix argument, | |
6c7178b9 KH |
1387 | 1) We don't want Vlast_command to be ``universal-argument'' |
1388 | (that would be dumb), so don't set Vlast_command, | |
284f4730 JB |
1389 | 2) we want to leave echoing on so that the prefix will be |
1390 | echoed as part of this key sequence, so don't call | |
1391 | cancel_echoing, and | |
1392 | 3) we want to leave this_command_key_count non-zero, so that | |
1393 | read_char will realize that it is re-reading a character, and | |
217258d5 KH |
1394 | not echo it a second time. |
1395 | ||
1396 | If the command didn't actually create a prefix arg, | |
1397 | but is merely a frame event that is transparent to prefix args, | |
1398 | then the above doesn't apply. */ | |
1399 | if (NILP (current_kboard->Vprefix_arg) || CONSP (last_command_char)) | |
284f4730 | 1400 | { |
6c7178b9 | 1401 | current_kboard->Vlast_command = this_command; |
284f4730 JB |
1402 | cancel_echoing (); |
1403 | this_command_key_count = 0; | |
6321824f | 1404 | this_single_command_key_start = 0; |
284f4730 | 1405 | } |
86e5706b | 1406 | |
51603bd0 RS |
1407 | /* Note that the value cell will never directly contain nil |
1408 | if the symbol is a local variable. */ | |
1409 | if (!NILP (Vpost_command_hook) && !NILP (Vrun_hooks)) | |
1410 | safe_run_hooks (Qpost_command_hook); | |
1411 | ||
1412 | if (!NILP (Vdeferred_action_list)) | |
1413 | safe_run_hooks (Qdeferred_action_function); | |
1414 | ||
1415 | if (!NILP (Vpost_command_idle_hook) && !NILP (Vrun_hooks)) | |
1416 | { | |
1417 | if (NILP (Vunread_command_events) | |
1418 | && NILP (Vexecuting_macro) | |
1419 | && !NILP (sit_for (0, post_command_idle_delay, 0, 1))) | |
1420 | safe_run_hooks (Qpost_command_idle_hook); | |
1421 | } | |
1422 | ||
88ce066e | 1423 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1424 | { |
1425 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1426 | { | |
1427 | current_buffer->mark_active = Qnil; | |
1428 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1429 | } | |
1430 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1431 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1432 | } | |
ff4b06d3 KH |
1433 | |
1434 | finalize: | |
1435 | /* Install chars successfully executed in kbd macro. */ | |
1436 | ||
d8bcf58e KH |
1437 | if (!NILP (current_kboard->defining_kbd_macro) |
1438 | && NILP (current_kboard->Vprefix_arg)) | |
ff4b06d3 KH |
1439 | finalize_kbd_macro_chars (); |
1440 | ||
c5fdd383 | 1441 | #ifdef MULTI_KBOARD |
604ccd1d | 1442 | if (!was_locked) |
1e8bd3da | 1443 | any_kboard_state (); |
ff4b06d3 | 1444 | #endif |
284f4730 JB |
1445 | } |
1446 | } | |
1c9784c9 | 1447 | |
0bc3db2b RS |
1448 | /* Subroutine for safe_run_hooks: run the hook HOOK. */ |
1449 | ||
1450 | static Lisp_Object | |
1451 | safe_run_hooks_1 (hook) | |
1452 | Lisp_Object hook; | |
1453 | { | |
1454 | return call1 (Vrun_hooks, Vinhibit_quit); | |
1455 | } | |
1456 | ||
1457 | /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */ | |
1458 | ||
1459 | static Lisp_Object | |
1460 | safe_run_hooks_error (data) | |
1461 | Lisp_Object data; | |
1462 | { | |
1463 | Fset (Vinhibit_quit, Qnil); | |
1464 | } | |
1465 | ||
1c9784c9 KH |
1466 | /* If we get an error while running the hook, cause the hook variable |
1467 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1468 | to mysteriously evaporate. */ | |
0bc3db2b | 1469 | |
68f297c5 | 1470 | void |
1c9784c9 | 1471 | safe_run_hooks (hook) |
a98ea3f9 | 1472 | Lisp_Object hook; |
1c9784c9 | 1473 | { |
68553292 | 1474 | Lisp_Object value; |
1c9784c9 | 1475 | int count = specpdl_ptr - specpdl; |
0bc3db2b RS |
1476 | specbind (Qinhibit_quit, hook); |
1477 | ||
e702932d | 1478 | internal_condition_case (safe_run_hooks_1, Qt, safe_run_hooks_error); |
1c9784c9 KH |
1479 | |
1480 | unbind_to (count, Qnil); | |
1481 | } | |
284f4730 JB |
1482 | \f |
1483 | /* Number of seconds between polling for input. */ | |
1484 | int polling_period; | |
1485 | ||
eb8c3be9 | 1486 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1487 | int poll_suppress_count; |
1488 | ||
36922b18 | 1489 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1490 | int polling_for_input; |
1491 | ||
36922b18 RS |
1492 | #ifdef POLL_FOR_INPUT |
1493 | ||
284f4730 JB |
1494 | /* Handle an alarm once each second and read pending input |
1495 | so as to handle a C-g if it comces in. */ | |
1496 | ||
1497 | SIGTYPE | |
91c049d4 RS |
1498 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1499 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1500 | { |
87dd9b9b RS |
1501 | /* This causes the call to start_polling at the end |
1502 | to do its job. It also arranges for a quit or error | |
1503 | from within read_avail_input to resume polling. */ | |
1504 | poll_suppress_count++; | |
9ac0d9e0 JB |
1505 | if (interrupt_input_blocked == 0 |
1506 | && !waiting_for_input) | |
1507 | read_avail_input (0); | |
87dd9b9b RS |
1508 | /* Turn on the SIGALRM handler and request another alarm. */ |
1509 | start_polling (); | |
284f4730 JB |
1510 | } |
1511 | ||
1512 | #endif | |
1513 | ||
1514 | /* Begin signals to poll for input, if they are appropriate. | |
1515 | This function is called unconditionally from various places. */ | |
1516 | ||
1517 | start_polling () | |
1518 | { | |
1519 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1520 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1521 | { |
1522 | poll_suppress_count--; | |
1523 | if (poll_suppress_count == 0) | |
1524 | { | |
1525 | signal (SIGALRM, input_poll_signal); | |
1526 | polling_for_input = 1; | |
1527 | alarm (polling_period); | |
1528 | } | |
1529 | } | |
1530 | #endif | |
1531 | } | |
1532 | ||
1d3195db RS |
1533 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1534 | ||
1535 | int | |
1536 | input_polling_used () | |
1537 | { | |
1538 | #ifdef POLL_FOR_INPUT | |
1539 | return read_socket_hook && !interrupt_input; | |
1540 | #else | |
1541 | return 0; | |
1542 | #endif | |
1543 | } | |
1544 | ||
284f4730 JB |
1545 | /* Turn off polling. */ |
1546 | ||
1547 | stop_polling () | |
1548 | { | |
1549 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1550 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1551 | { |
1552 | if (poll_suppress_count == 0) | |
1553 | { | |
1554 | polling_for_input = 0; | |
1555 | alarm (0); | |
1556 | } | |
1557 | poll_suppress_count++; | |
1558 | } | |
1559 | #endif | |
1560 | } | |
fe8aeef3 RS |
1561 | |
1562 | /* Set the value of poll_suppress_count to COUNT | |
1563 | and start or stop polling accordingly. */ | |
1564 | ||
1565 | void | |
1566 | set_poll_suppress_count (count) | |
1567 | int count; | |
1568 | { | |
1569 | #ifdef POLL_FOR_INPUT | |
1570 | if (count == 0 && poll_suppress_count != 0) | |
1571 | { | |
1572 | poll_suppress_count = 1; | |
1573 | start_polling (); | |
1574 | } | |
1575 | else if (count != 0 && poll_suppress_count == 0) | |
1576 | { | |
1577 | stop_polling (); | |
1578 | } | |
1579 | poll_suppress_count = count; | |
1580 | #endif | |
1581 | } | |
f4eef8b4 | 1582 | |
d0a57728 RS |
1583 | /* Bind polling_period to a value at least N. |
1584 | But don't decrease it. */ | |
1585 | ||
f4eef8b4 RS |
1586 | bind_polling_period (n) |
1587 | int n; | |
1588 | { | |
1589 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1590 | int new = polling_period; |
1591 | ||
1592 | if (n > new) | |
1593 | new = n; | |
1594 | ||
f4eef8b4 | 1595 | stop_polling (); |
d0a57728 RS |
1596 | specbind (Qpolling_period, make_number (new)); |
1597 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1598 | start_polling (); |
1599 | #endif | |
1600 | } | |
284f4730 | 1601 | \f |
6da3dd3a RS |
1602 | /* Apply the control modifier to CHARACTER. */ |
1603 | ||
faf5e407 JB |
1604 | int |
1605 | make_ctrl_char (c) | |
1606 | int c; | |
1607 | { | |
d205953b JB |
1608 | /* Save the upper bits here. */ |
1609 | int upper = c & ~0177; | |
1610 | ||
1611 | c &= 0177; | |
1612 | ||
1613 | /* Everything in the columns containing the upper-case letters | |
1614 | denotes a control character. */ | |
1615 | if (c >= 0100 && c < 0140) | |
1616 | { | |
1617 | int oc = c; | |
1618 | c &= ~0140; | |
1619 | /* Set the shift modifier for a control char | |
1620 | made from a shifted letter. But only for letters! */ | |
1621 | if (oc >= 'A' && oc <= 'Z') | |
1622 | c |= shift_modifier; | |
1623 | } | |
1624 | ||
1625 | /* The lower-case letters denote control characters too. */ | |
1626 | else if (c >= 'a' && c <= 'z') | |
1627 | c &= ~0140; | |
1628 | ||
1629 | /* Include the bits for control and shift | |
1630 | only if the basic ASCII code can't indicate them. */ | |
1631 | else if (c >= ' ') | |
1632 | c |= ctrl_modifier; | |
1633 | ||
1634 | /* Replace the high bits. */ | |
1635 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1636 | |
1637 | return c; | |
1638 | } | |
1639 | ||
1640 | ||
1641 | \f | |
284f4730 JB |
1642 | /* Input of single characters from keyboard */ |
1643 | ||
1644 | Lisp_Object print_help (); | |
1645 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1646 | static void record_char (); |
284f4730 | 1647 | |
c5fdd383 KH |
1648 | #ifdef MULTI_KBOARD |
1649 | static jmp_buf wrong_kboard_jmpbuf; | |
bded54dd | 1650 | #endif |
beecf6a1 | 1651 | |
284f4730 JB |
1652 | /* read a character from the keyboard; call the redisplay if needed */ |
1653 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1654 | -1 means do not do redisplay, but do do autosaving. | |
1655 | 1 means do both. */ | |
1656 | ||
7d6de002 RS |
1657 | /* The arguments MAPS and NMAPS are for menu prompting. |
1658 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1659 | ||
1660 | PREV_EVENT is the previous input event, or nil if we are reading | |
1661 | the first event of a key sequence. | |
1662 | ||
83d68044 | 1663 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 1664 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 1665 | USED_MOUSE_MENU is null, we don't dereference it. |
dcc408a0 RS |
1666 | |
1667 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1668 | |
284f4730 | 1669 | Lisp_Object |
7d6de002 | 1670 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1671 | int commandflag; |
7d6de002 RS |
1672 | int nmaps; |
1673 | Lisp_Object *maps; | |
1674 | Lisp_Object prev_event; | |
1675 | int *used_mouse_menu; | |
284f4730 JB |
1676 | { |
1677 | register Lisp_Object c; | |
1678 | int count; | |
410d4de9 | 1679 | jmp_buf local_getcjmp; |
284f4730 | 1680 | jmp_buf save_jump; |
a1341f75 | 1681 | int key_already_recorded = 0; |
017c7cb6 | 1682 | Lisp_Object tem, save; |
e4fe371d RS |
1683 | Lisp_Object also_record; |
1684 | also_record = Qnil; | |
284f4730 | 1685 | |
71918b75 RS |
1686 | before_command_key_count = this_command_key_count; |
1687 | before_command_echo_length = echo_length (); | |
1688 | ||
7f07d5ca RS |
1689 | retry: |
1690 | ||
24597608 | 1691 | if (CONSP (Vunread_command_events)) |
284f4730 | 1692 | { |
24597608 RS |
1693 | c = XCONS (Vunread_command_events)->car; |
1694 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1695 | |
2479e91e RS |
1696 | /* Undo what read_char_x_menu_prompt did when it unread |
1697 | additional keys returned by Fx_popup_menu. */ | |
1698 | if (CONSP (c) | |
1699 | && (SYMBOLP (XCONS (c)->car) || INTEGERP (XCONS (c)->car)) | |
1700 | && NILP (XCONS (c)->cdr)) | |
1701 | c = XCONS (c)->car; | |
1702 | ||
284f4730 JB |
1703 | if (this_command_key_count == 0) |
1704 | goto reread_first; | |
1705 | else | |
1706 | goto reread; | |
1707 | } | |
1708 | ||
86e5706b RS |
1709 | if (unread_command_char != -1) |
1710 | { | |
18cd2eeb | 1711 | XSETINT (c, unread_command_char); |
86e5706b RS |
1712 | unread_command_char = -1; |
1713 | ||
1714 | if (this_command_key_count == 0) | |
1715 | goto reread_first; | |
1716 | else | |
1717 | goto reread; | |
1718 | } | |
1719 | ||
71918b75 RS |
1720 | /* If there is no function key translated before |
1721 | reset-this-command-lengths takes effect, forget about it. */ | |
1722 | before_command_restore_flag = 0; | |
1723 | ||
284f4730 JB |
1724 | if (!NILP (Vexecuting_macro)) |
1725 | { | |
fce33686 JB |
1726 | /* We set this to Qmacro; since that's not a frame, nobody will |
1727 | try to switch frames on us, and the selected window will | |
1728 | remain unchanged. | |
1729 | ||
1730 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1731 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1732 | real event came from. Normally, a switch-frame event selects |
1733 | internal_last_event_frame after each command is read, but | |
1734 | events read from a macro should never cause a new frame to be | |
1735 | selected. */ | |
4c52b668 | 1736 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
fce33686 | 1737 | |
663258f2 JB |
1738 | /* Exit the macro if we are at the end. |
1739 | Also, some things replace the macro with t | |
1740 | to force an early exit. */ | |
1741 | if (EQ (Vexecuting_macro, Qt) | |
1742 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1743 | { |
18cd2eeb | 1744 | XSETINT (c, -1); |
284f4730 JB |
1745 | return c; |
1746 | } | |
df0f2ba1 | 1747 | |
284f4730 | 1748 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); |
8c18cbfb | 1749 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1750 | && (XINT (c) & 0x80)) |
bb9e9bed | 1751 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1752 | |
284f4730 JB |
1753 | executing_macro_index++; |
1754 | ||
1755 | goto from_macro; | |
1756 | } | |
1757 | ||
cd21b839 JB |
1758 | if (!NILP (unread_switch_frame)) |
1759 | { | |
1760 | c = unread_switch_frame; | |
1761 | unread_switch_frame = Qnil; | |
1762 | ||
1763 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1764 | again, so we go to reread_first, rather than reread. */ |
1765 | goto reread_first; | |
cd21b839 JB |
1766 | } |
1767 | ||
4ec4ed6a RS |
1768 | if (commandflag >= 0 && !input_pending |
1769 | && !detect_input_pending_run_timers (0)) | |
410d4de9 | 1770 | redisplay (); |
e9bf89a0 | 1771 | |
410d4de9 RS |
1772 | /* Message turns off echoing unless more keystrokes turn it on again. */ |
1773 | if (echo_area_glyphs && *echo_area_glyphs | |
1fc93d49 | 1774 | && echo_area_glyphs != current_kboard->echobuf |
0c04a67e | 1775 | && ok_to_echo_at_next_pause != echo_area_glyphs) |
410d4de9 RS |
1776 | cancel_echoing (); |
1777 | else | |
1778 | /* If already echoing, continue. */ | |
1779 | echo_dash (); | |
284f4730 | 1780 | |
410d4de9 RS |
1781 | /* Try reading a character via menu prompting in the minibuf. |
1782 | Try this before the sit-for, because the sit-for | |
1783 | would do the wrong thing if we are supposed to do | |
1784 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1785 | after a mouse event so don't try a minibuf menu. */ | |
1786 | c = Qnil; | |
1787 | if (nmaps > 0 && INTERACTIVE | |
1788 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1789 | /* Don't bring up a menu if we already have another event. */ | |
1790 | && NILP (Vunread_command_events) | |
1791 | && unread_command_char < 0 | |
4ec4ed6a | 1792 | && !detect_input_pending_run_timers (0)) |
410d4de9 RS |
1793 | { |
1794 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
1795 | if (! NILP (c)) | |
1796 | { | |
1797 | key_already_recorded = 1; | |
1798 | goto non_reread_1; | |
1799 | } | |
1800 | } | |
284f4730 | 1801 | |
410d4de9 RS |
1802 | /* Make a longjmp point for quits to use, but don't alter getcjmp just yet. |
1803 | We will do that below, temporarily for short sections of code, | |
1804 | when appropriate. local_getcjmp must be in effect | |
1805 | around any call to sit_for or kbd_buffer_get_event; | |
1806 | it *must not* be in effect when we call redisplay. */ | |
284f4730 | 1807 | |
410d4de9 | 1808 | if (_setjmp (local_getcjmp)) |
284f4730 | 1809 | { |
18cd2eeb | 1810 | XSETINT (c, quit_char); |
4c52b668 KH |
1811 | XSETFRAME (internal_last_event_frame, selected_frame); |
1812 | Vlast_event_frame = internal_last_event_frame; | |
04904c29 RS |
1813 | /* If we report the quit char as an event, |
1814 | don't do so more than once. */ | |
1815 | if (!NILP (Vinhibit_quit)) | |
1816 | Vquit_flag = Qnil; | |
284f4730 | 1817 | |
c5fdd383 | 1818 | #ifdef MULTI_KBOARD |
df0f2ba1 | 1819 | { |
c5fdd383 KH |
1820 | KBOARD *kb = FRAME_KBOARD (selected_frame); |
1821 | if (kb != current_kboard) | |
df0f2ba1 | 1822 | { |
c5fdd383 | 1823 | Lisp_Object *tailp = &kb->kbd_queue; |
1e8bd3da RS |
1824 | /* We shouldn't get here if we were in single-kboard mode! */ |
1825 | if (single_kboard) | |
df0f2ba1 KH |
1826 | abort (); |
1827 | while (CONSP (*tailp)) | |
1828 | tailp = &XCONS (*tailp)->cdr; | |
1829 | if (!NILP (*tailp)) | |
1830 | abort (); | |
1831 | *tailp = Fcons (c, Qnil); | |
c5fdd383 KH |
1832 | kb->kbd_queue_has_data = 1; |
1833 | current_kboard = kb; | |
1834 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 KH |
1835 | } |
1836 | } | |
1837 | #endif | |
284f4730 JB |
1838 | goto non_reread; |
1839 | } | |
1840 | ||
d9d4c147 KH |
1841 | timer_start_idle (); |
1842 | ||
284f4730 JB |
1843 | /* If in middle of key sequence and minibuffer not active, |
1844 | start echoing if enough time elapses. */ | |
410d4de9 | 1845 | |
c5fdd383 | 1846 | if (minibuf_level == 0 && !current_kboard->immediate_echo |
6c6083a9 | 1847 | && this_command_key_count > 0 |
27203ead | 1848 | && ! noninteractive |
284f4730 | 1849 | && echo_keystrokes > 0 |
1fc93d49 | 1850 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0 |
0c04a67e | 1851 | || ok_to_echo_at_next_pause == echo_area_glyphs)) |
284f4730 JB |
1852 | { |
1853 | Lisp_Object tem0; | |
1854 | ||
7d6de002 RS |
1855 | /* After a mouse event, start echoing right away. |
1856 | This is because we are probably about to display a menu, | |
1857 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1858 | if (EVENT_HAS_PARAMETERS (prev_event)) |
3dbd9ee4 | 1859 | echo_now (); |
7d6de002 RS |
1860 | else |
1861 | { | |
410d4de9 RS |
1862 | save_getcjmp (save_jump); |
1863 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1864 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); |
410d4de9 | 1865 | restore_getcjmp (save_jump); |
7d6de002 | 1866 | if (EQ (tem0, Qt)) |
3dbd9ee4 | 1867 | echo_now (); |
7d6de002 | 1868 | } |
284f4730 JB |
1869 | } |
1870 | ||
410d4de9 | 1871 | /* Maybe auto save due to number of keystrokes. */ |
284f4730 JB |
1872 | |
1873 | if (commandflag != 0 | |
1874 | && auto_save_interval > 0 | |
51172b6d | 1875 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
4ec4ed6a | 1876 | && !detect_input_pending_run_timers (0)) |
284f4730 | 1877 | { |
284f4730 | 1878 | Fdo_auto_save (Qnil, Qnil); |
ef8fd672 RS |
1879 | /* Hooks can actually change some buffers in auto save. */ |
1880 | redisplay (); | |
284f4730 JB |
1881 | } |
1882 | ||
8150596a | 1883 | /* Try reading using an X menu. |
24597608 RS |
1884 | This is never confused with reading using the minibuf |
1885 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1886 | does not pass on any keymaps. */ | |
410d4de9 | 1887 | |
24597608 | 1888 | if (nmaps > 0 && INTERACTIVE |
5a8d99e0 KH |
1889 | && !NILP (prev_event) |
1890 | && EVENT_HAS_PARAMETERS (prev_event) | |
1891 | && !EQ (XCONS (prev_event)->car, Qmenu_bar) | |
24597608 RS |
1892 | /* Don't bring up a menu if we already have another event. */ |
1893 | && NILP (Vunread_command_events) | |
b8556aee | 1894 | && unread_command_char < 0) |
8150596a | 1895 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1896 | |
410d4de9 RS |
1897 | /* Maybe autosave and/or garbage collect due to idleness. */ |
1898 | ||
26c1639e | 1899 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1900 | { |
1901 | int delay_level, buffer_size; | |
1902 | ||
410d4de9 RS |
1903 | /* Slow down auto saves logarithmically in size of current buffer, |
1904 | and garbage collect while we're at it. */ | |
7d6de002 RS |
1905 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) |
1906 | last_non_minibuf_size = Z - BEG; | |
1907 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1908 | delay_level = 0; | |
1909 | while (buffer_size > 64) | |
1910 | delay_level++, buffer_size -= buffer_size >> 2; | |
1911 | if (delay_level < 4) delay_level = 4; | |
1912 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1913 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1914 | ||
1915 | /* Auto save if enough time goes by without input. */ | |
1916 | if (commandflag != 0 | |
51172b6d | 1917 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1918 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1919 | && XINT (Vauto_save_timeout) > 0) |
1920 | { | |
1921 | Lisp_Object tem0; | |
410d4de9 RS |
1922 | |
1923 | save_getcjmp (save_jump); | |
1924 | restore_getcjmp (local_getcjmp); | |
d9d4c147 KH |
1925 | tem0 = sit_for (delay_level * XFASTINT (Vauto_save_timeout) / 4, |
1926 | 0, 1, 1); | |
410d4de9 RS |
1927 | restore_getcjmp (save_jump); |
1928 | ||
7d6de002 RS |
1929 | if (EQ (tem0, Qt)) |
1930 | { | |
7d6de002 | 1931 | Fdo_auto_save (Qnil, Qnil); |
7d6de002 RS |
1932 | |
1933 | /* If we have auto-saved and there is still no input | |
1934 | available, garbage collect if there has been enough | |
1935 | consing going on to make it worthwhile. */ | |
4ec4ed6a | 1936 | if (!detect_input_pending_run_timers (0) |
7d6de002 | 1937 | && consing_since_gc > gc_cons_threshold / 2) |
ef8fd672 | 1938 | Fgarbage_collect (); |
410d4de9 | 1939 | |
ef8fd672 | 1940 | redisplay (); |
7d6de002 RS |
1941 | } |
1942 | } | |
1943 | } | |
284f4730 | 1944 | |
410d4de9 RS |
1945 | /* Read something from current KBOARD's side queue, if possible. */ |
1946 | ||
beecf6a1 | 1947 | if (NILP (c)) |
1e12dd87 | 1948 | { |
c5fdd383 | 1949 | if (current_kboard->kbd_queue_has_data) |
beecf6a1 | 1950 | { |
c5fdd383 | 1951 | if (!CONSP (current_kboard->kbd_queue)) |
4524b161 | 1952 | abort (); |
c5fdd383 KH |
1953 | c = XCONS (current_kboard->kbd_queue)->car; |
1954 | current_kboard->kbd_queue | |
1955 | = XCONS (current_kboard->kbd_queue)->cdr; | |
1956 | if (NILP (current_kboard->kbd_queue)) | |
1957 | current_kboard->kbd_queue_has_data = 0; | |
d9d4c147 | 1958 | input_pending = readable_events (0); |
4c52b668 KH |
1959 | if (EVENT_HAS_PARAMETERS (c) |
1960 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1961 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1962 | Vlast_event_frame = internal_last_event_frame; | |
beecf6a1 | 1963 | } |
1e8bd3da RS |
1964 | } |
1965 | ||
c5fdd383 | 1966 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
1967 | /* If current_kboard's side queue is empty check the other kboards. |
1968 | If one of them has data that we have not yet seen here, | |
1969 | switch to it and process the data waiting for it. | |
1970 | ||
1971 | Note: if the events queued up for another kboard | |
1972 | have already been seen here, and therefore are not a complete command, | |
1973 | the kbd_queue_has_data field is 0, so we skip that kboard here. | |
1974 | That's to avoid an infinite loop switching between kboards here. */ | |
1975 | if (NILP (c) && !single_kboard) | |
1976 | { | |
1977 | KBOARD *kb; | |
1978 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
1979 | if (kb->kbd_queue_has_data) | |
1980 | { | |
1981 | current_kboard = kb; | |
1982 | longjmp (wrong_kboard_jmpbuf, 1); | |
1983 | } | |
1984 | } | |
df0f2ba1 KH |
1985 | #endif |
1986 | ||
410d4de9 RS |
1987 | wrong_kboard: |
1988 | ||
1989 | stop_polling (); | |
1990 | ||
1e8bd3da RS |
1991 | /* Finally, we read from the main queue, |
1992 | and if that gives us something we can't use yet, we put it on the | |
1993 | appropriate side queue and try again. */ | |
410d4de9 | 1994 | |
1e8bd3da RS |
1995 | if (NILP (c)) |
1996 | { | |
1997 | KBOARD *kb; | |
1998 | ||
1e8bd3da | 1999 | /* Actually read a character, waiting if necessary. */ |
410d4de9 RS |
2000 | save_getcjmp (save_jump); |
2001 | restore_getcjmp (local_getcjmp); | |
83d68044 | 2002 | c = kbd_buffer_get_event (&kb, used_mouse_menu); |
410d4de9 RS |
2003 | restore_getcjmp (save_jump); |
2004 | ||
c5fdd383 | 2005 | #ifdef MULTI_KBOARD |
410d4de9 | 2006 | if (! NILP (c) && (kb != current_kboard)) |
1e8bd3da RS |
2007 | { |
2008 | Lisp_Object *tailp = &kb->kbd_queue; | |
2009 | while (CONSP (*tailp)) | |
2010 | tailp = &XCONS (*tailp)->cdr; | |
2011 | if (!NILP (*tailp)) | |
2012 | abort (); | |
2013 | *tailp = Fcons (c, Qnil); | |
2014 | kb->kbd_queue_has_data = 1; | |
46b84797 | 2015 | c = Qnil; |
1e8bd3da RS |
2016 | if (single_kboard) |
2017 | goto wrong_kboard; | |
2018 | current_kboard = kb; | |
2019 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 | 2020 | } |
1e8bd3da | 2021 | #endif |
beecf6a1 | 2022 | } |
1e8bd3da | 2023 | |
284f4730 | 2024 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 2025 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
2026 | Fkill_emacs (make_number (1)); |
2027 | ||
8c18cbfb | 2028 | if (INTEGERP (c)) |
80645119 JB |
2029 | { |
2030 | /* Add in any extra modifiers, where appropriate. */ | |
2031 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
2032 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
2033 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 2034 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
2035 | |
2036 | /* Transfer any other modifier bits directly from | |
2037 | extra_keyboard_modifiers to c. Ignore the actual character code | |
2038 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 2039 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 2040 | } |
9fa4395d | 2041 | |
284f4730 JB |
2042 | non_reread: |
2043 | ||
d9d4c147 | 2044 | /* Now that we have read an event, Emacs is not idle-- |
4ec4ed6a | 2045 | unless the event was a timer event (not used now). */ |
d9d4c147 KH |
2046 | if (! (CONSP (c) && EQ (XCONS (c)->car, Qtimer_event))) |
2047 | timer_stop_idle (); | |
2048 | ||
284f4730 JB |
2049 | start_polling (); |
2050 | ||
410d4de9 RS |
2051 | if (NILP (c)) |
2052 | { | |
2053 | if (commandflag >= 0 | |
4ec4ed6a | 2054 | && !input_pending && !detect_input_pending_run_timers (0)) |
410d4de9 RS |
2055 | redisplay (); |
2056 | ||
2057 | goto wrong_kboard; | |
2058 | } | |
2059 | ||
2060 | non_reread_1: | |
2061 | ||
dfd11da7 RS |
2062 | /* Buffer switch events are only for internal wakeups |
2063 | so don't show them to the user. */ | |
8c18cbfb | 2064 | if (BUFFERP (c)) |
dfd11da7 RS |
2065 | return c; |
2066 | ||
a1341f75 RS |
2067 | if (key_already_recorded) |
2068 | return c; | |
2069 | ||
7f07d5ca RS |
2070 | /* Process special events within read_char |
2071 | and loop around to read another event. */ | |
017c7cb6 RS |
2072 | save = Vquit_flag; |
2073 | Vquit_flag = Qnil; | |
7f07d5ca RS |
2074 | tem = get_keyelt (access_keymap (get_keymap_1 (Vspecial_event_map, 0, 0), |
2075 | c, 0, 0), 1); | |
017c7cb6 | 2076 | Vquit_flag = save; |
7f07d5ca RS |
2077 | |
2078 | if (!NILP (tem)) | |
2079 | { | |
ba8dfba8 RS |
2080 | int was_locked = single_kboard; |
2081 | ||
7f07d5ca | 2082 | last_input_char = c; |
158f7532 | 2083 | Fcommand_execute (tem, Qnil, Fvector (1, &last_input_char), Qt); |
ba8dfba8 RS |
2084 | |
2085 | /* Resume allowing input from any kboard, if that was true before. */ | |
2086 | if (!was_locked) | |
2087 | any_kboard_state (); | |
2088 | ||
7f07d5ca RS |
2089 | goto retry; |
2090 | } | |
2091 | ||
dfd11da7 RS |
2092 | /* Wipe the echo area. */ |
2093 | echo_area_glyphs = 0; | |
284f4730 JB |
2094 | |
2095 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 2096 | if (INTEGERP (c)) |
284f4730 JB |
2097 | { |
2098 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 2099 | if (XINT (c) == -1) |
284f4730 JB |
2100 | return c; |
2101 | ||
8c18cbfb | 2102 | if (STRINGP (Vkeyboard_translate_table) |
845fe94e | 2103 | && XSTRING (Vkeyboard_translate_table)->size > (unsigned) XFASTINT (c)) |
f4255cd1 | 2104 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); |
f9414d62 | 2105 | else if ((VECTORP (Vkeyboard_translate_table) |
845fe94e RS |
2106 | && XVECTOR (Vkeyboard_translate_table)->size > (unsigned) XFASTINT (c)) |
2107 | || (CHAR_TABLE_P (Vkeyboard_translate_table) | |
2108 | && CHAR_TABLE_ORDINARY_SLOTS > (unsigned) XFASTINT (c))) | |
f9414d62 RS |
2109 | { |
2110 | Lisp_Object d; | |
2111 | d = Faref (Vkeyboard_translate_table, c); | |
2112 | /* nil in keyboard-translate-table means no translation. */ | |
2113 | if (!NILP (d)) | |
2114 | c = d; | |
2115 | } | |
284f4730 JB |
2116 | } |
2117 | ||
e4fe371d RS |
2118 | /* If this event is a mouse click in the menu bar, |
2119 | return just menu-bar for now. Modify the mouse click event | |
2120 | so we won't do this twice, then queue it up. */ | |
2121 | if (EVENT_HAS_PARAMETERS (c) | |
2122 | && CONSP (XCONS (c)->cdr) | |
2123 | && CONSP (EVENT_START (c)) | |
2124 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 2125 | { |
e4fe371d | 2126 | Lisp_Object posn; |
284f4730 | 2127 | |
e4fe371d RS |
2128 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
2129 | /* Handle menu-bar events: | |
2130 | insert the dummy prefix event `menu-bar'. */ | |
2131 | if (EQ (posn, Qmenu_bar)) | |
2132 | { | |
2133 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
2134 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 2135 | |
e4fe371d RS |
2136 | also_record = c; |
2137 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
2138 | c = posn; | |
284f4730 | 2139 | } |
284f4730 JB |
2140 | } |
2141 | ||
e4fe371d RS |
2142 | record_char (c); |
2143 | if (! NILP (also_record)) | |
2144 | record_char (also_record); | |
51172b6d | 2145 | |
284f4730 JB |
2146 | from_macro: |
2147 | reread_first: | |
71918b75 RS |
2148 | before_command_key_count = this_command_key_count; |
2149 | before_command_echo_length = echo_length (); | |
284f4730 | 2150 | |
b8556aee | 2151 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
2152 | if (echo_keystrokes |
2153 | && ! (EVENT_HAS_PARAMETERS (c) | |
2154 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
2155 | { |
2156 | echo_char (c); | |
2157 | if (! NILP (also_record)) | |
2158 | echo_char (also_record); | |
1fc93d49 RS |
2159 | /* Once we reread a character, echoing can happen |
2160 | the next time we pause to read a new one. */ | |
0c04a67e | 2161 | ok_to_echo_at_next_pause = echo_area_glyphs; |
e4fe371d | 2162 | } |
b8556aee | 2163 | |
db8c1663 | 2164 | /* Record this character as part of the current key. */ |
b8556aee | 2165 | add_command_key (c); |
e4fe371d RS |
2166 | if (! NILP (also_record)) |
2167 | add_command_key (also_record); | |
284f4730 JB |
2168 | |
2169 | /* Re-reading in the middle of a command */ | |
2170 | reread: | |
2171 | last_input_char = c; | |
2172 | num_input_chars++; | |
2173 | ||
2174 | /* Process the help character specially if enabled */ | |
ecb7cb34 | 2175 | if (!NILP (Vhelp_form) && help_char_p (c)) |
284f4730 JB |
2176 | { |
2177 | Lisp_Object tem0; | |
2178 | count = specpdl_ptr - specpdl; | |
2179 | ||
2180 | record_unwind_protect (Fset_window_configuration, | |
2181 | Fcurrent_window_configuration (Qnil)); | |
2182 | ||
2183 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 2184 | if (STRINGP (tem0)) |
284f4730 JB |
2185 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
2186 | ||
2187 | cancel_echoing (); | |
3cb81011 KH |
2188 | do |
2189 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2190 | while (BUFFERP (c)); |
ff11dfa1 | 2191 | /* Remove the help from the frame */ |
284f4730 | 2192 | unbind_to (count, Qnil); |
410d4de9 | 2193 | |
284f4730 JB |
2194 | redisplay (); |
2195 | if (EQ (c, make_number (040))) | |
2196 | { | |
2197 | cancel_echoing (); | |
3cb81011 KH |
2198 | do |
2199 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2200 | while (BUFFERP (c)); |
284f4730 JB |
2201 | } |
2202 | } | |
2203 | ||
2204 | return c; | |
2205 | } | |
2206 | ||
ecb7cb34 KH |
2207 | /* Return 1 if should recognize C as "the help character". */ |
2208 | ||
2209 | int | |
2210 | help_char_p (c) | |
2211 | Lisp_Object c; | |
2212 | { | |
2213 | Lisp_Object tail; | |
2214 | ||
2215 | if (EQ (c, Vhelp_char)) | |
2216 | return 1; | |
2217 | for (tail = Vhelp_event_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
2218 | if (EQ (c, XCONS (tail)->car)) | |
2219 | return 1; | |
2220 | return 0; | |
2221 | } | |
2222 | ||
e4fe371d RS |
2223 | /* Record the input event C in various ways. */ |
2224 | ||
2225 | static void | |
2226 | record_char (c) | |
2227 | Lisp_Object c; | |
2228 | { | |
2229 | total_keys++; | |
2230 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
2231 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
2232 | recent_keys_index = 0; | |
2233 | ||
2234 | /* Write c to the dribble file. If c is a lispy event, write | |
2235 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
2236 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
2237 | if (dribble) | |
2238 | { | |
2239 | if (INTEGERP (c)) | |
2240 | { | |
2241 | if (XUINT (c) < 0x100) | |
2242 | putc (XINT (c), dribble); | |
2243 | else | |
6de34814 | 2244 | fprintf (dribble, " 0x%x", (int) XUINT (c)); |
e4fe371d RS |
2245 | } |
2246 | else | |
2247 | { | |
2248 | Lisp_Object dribblee; | |
2249 | ||
2250 | /* If it's a structured event, take the event header. */ | |
2251 | dribblee = EVENT_HEAD (c); | |
2252 | ||
2253 | if (SYMBOLP (dribblee)) | |
2254 | { | |
2255 | putc ('<', dribble); | |
2256 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2257 | XSYMBOL (dribblee)->name->size, | |
2258 | dribble); | |
2259 | putc ('>', dribble); | |
2260 | } | |
2261 | } | |
2262 | ||
2263 | fflush (dribble); | |
2264 | } | |
2265 | ||
2266 | store_kbd_macro_char (c); | |
2267 | ||
2268 | num_nonmacro_input_chars++; | |
2269 | } | |
2270 | ||
284f4730 JB |
2271 | Lisp_Object |
2272 | print_help (object) | |
2273 | Lisp_Object object; | |
2274 | { | |
622de3e9 | 2275 | struct buffer *old = current_buffer; |
284f4730 | 2276 | Fprinc (object, Qnil); |
622de3e9 KH |
2277 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2278 | call0 (intern ("help-mode")); | |
2279 | set_buffer_internal (old); | |
284f4730 JB |
2280 | return Qnil; |
2281 | } | |
2282 | ||
2283 | /* Copy out or in the info on where C-g should throw to. | |
2284 | This is used when running Lisp code from within get_char, | |
2285 | in case get_char is called recursively. | |
2286 | See read_process_output. */ | |
2287 | ||
2288 | save_getcjmp (temp) | |
2289 | jmp_buf temp; | |
2290 | { | |
2291 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2292 | } | |
2293 | ||
2294 | restore_getcjmp (temp) | |
2295 | jmp_buf temp; | |
2296 | { | |
2297 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2298 | } | |
284f4730 | 2299 | \f |
2eb6bfbe RM |
2300 | #ifdef HAVE_MOUSE |
2301 | ||
284f4730 JB |
2302 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2303 | of this function. */ | |
a9d77f1f | 2304 | |
284f4730 JB |
2305 | static Lisp_Object |
2306 | tracking_off (old_value) | |
2307 | Lisp_Object old_value; | |
2308 | { | |
71edead1 RS |
2309 | do_mouse_tracking = old_value; |
2310 | if (NILP (old_value)) | |
284f4730 | 2311 | { |
284f4730 JB |
2312 | /* Redisplay may have been preempted because there was input |
2313 | available, and it assumes it will be called again after the | |
2314 | input has been processed. If the only input available was | |
2315 | the sort that we have just disabled, then we need to call | |
2316 | redisplay. */ | |
d9d4c147 | 2317 | if (!readable_events (1)) |
284f4730 JB |
2318 | { |
2319 | redisplay_preserve_echo_area (); | |
d9d4c147 | 2320 | get_input_pending (&input_pending, 1); |
284f4730 JB |
2321 | } |
2322 | } | |
2323 | } | |
2324 | ||
2325 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2326 | "Evaluate BODY with mouse movement events enabled.\n\ |
2327 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2328 | you can read with `read-event'.\n\ | |
2329 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2330 | (args) |
2331 | Lisp_Object args; | |
2332 | { | |
2333 | int count = specpdl_ptr - specpdl; | |
2334 | Lisp_Object val; | |
2335 | ||
a9d77f1f | 2336 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2337 | |
f3253854 | 2338 | do_mouse_tracking = Qt; |
df0f2ba1 | 2339 | |
284f4730 JB |
2340 | val = Fprogn (args); |
2341 | return unbind_to (count, val); | |
2342 | } | |
2eb6bfbe | 2343 | |
f3253854 KH |
2344 | /* If mouse has moved on some frame, return one of those frames. |
2345 | Return 0 otherwise. */ | |
2346 | ||
2347 | static FRAME_PTR | |
2348 | some_mouse_moved () | |
2349 | { | |
2350 | Lisp_Object tail, frame; | |
2351 | ||
2352 | FOR_EACH_FRAME (tail, frame) | |
2353 | { | |
2354 | if (XFRAME (frame)->mouse_moved) | |
2355 | return XFRAME (frame); | |
2356 | } | |
2357 | ||
2358 | return 0; | |
2359 | } | |
2360 | ||
2eb6bfbe | 2361 | #endif /* HAVE_MOUSE */ |
a612e298 RS |
2362 | \f |
2363 | /* Low level keyboard/mouse input. | |
2364 | kbd_buffer_store_event places events in kbd_buffer, and | |
0646c0dd | 2365 | kbd_buffer_get_event retrieves them. */ |
a612e298 RS |
2366 | |
2367 | /* Return true iff there are any events in the queue that read-char | |
2368 | would return. If this returns false, a read-char would block. */ | |
2369 | static int | |
d9d4c147 KH |
2370 | readable_events (do_timers_now) |
2371 | int do_timers_now; | |
a612e298 | 2372 | { |
4ec4ed6a RS |
2373 | if (do_timers_now) |
2374 | timer_check (do_timers_now); | |
2375 | ||
beecf6a1 KH |
2376 | if (kbd_fetch_ptr != kbd_store_ptr) |
2377 | return 1; | |
2378 | #ifdef HAVE_MOUSE | |
f3253854 | 2379 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
beecf6a1 KH |
2380 | return 1; |
2381 | #endif | |
1e8bd3da | 2382 | if (single_kboard) |
4c52b668 | 2383 | { |
c5fdd383 | 2384 | if (current_kboard->kbd_queue_has_data) |
4c52b668 KH |
2385 | return 1; |
2386 | } | |
2387 | else | |
2388 | { | |
c5fdd383 KH |
2389 | KBOARD *kb; |
2390 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
2391 | if (kb->kbd_queue_has_data) | |
4c52b668 KH |
2392 | return 1; |
2393 | } | |
beecf6a1 | 2394 | return 0; |
a612e298 RS |
2395 | } |
2396 | ||
2397 | /* Set this for debugging, to have a way to get out */ | |
2398 | int stop_character; | |
284f4730 | 2399 | |
c5fdd383 KH |
2400 | #ifdef MULTI_KBOARD |
2401 | static KBOARD * | |
2402 | event_to_kboard (event) | |
5798cf15 KH |
2403 | struct input_event *event; |
2404 | { | |
2405 | Lisp_Object frame; | |
2406 | frame = event->frame_or_window; | |
2407 | if (CONSP (frame)) | |
2408 | frame = XCONS (frame)->car; | |
2409 | else if (WINDOWP (frame)) | |
2410 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
2411 | ||
2412 | /* There are still some events that don't set this field. | |
f5b56972 KH |
2413 | For now, just ignore the problem. |
2414 | Also ignore dead frames here. */ | |
2415 | if (!FRAMEP (frame) || !FRAME_LIVE_P (XFRAME (frame))) | |
5798cf15 KH |
2416 | return 0; |
2417 | else | |
c5fdd383 | 2418 | return FRAME_KBOARD (XFRAME (frame)); |
5798cf15 KH |
2419 | } |
2420 | #endif | |
2421 | ||
284f4730 JB |
2422 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ |
2423 | ||
2424 | void | |
2425 | kbd_buffer_store_event (event) | |
2426 | register struct input_event *event; | |
2427 | { | |
2428 | if (event->kind == no_event) | |
2429 | abort (); | |
2430 | ||
2431 | if (event->kind == ascii_keystroke) | |
2432 | { | |
e9bf89a0 | 2433 | register int c = event->code & 0377; |
284f4730 | 2434 | |
faf5e407 JB |
2435 | if (event->modifiers & ctrl_modifier) |
2436 | c = make_ctrl_char (c); | |
2437 | ||
9fd7d808 RS |
2438 | c |= (event->modifiers |
2439 | & (meta_modifier | alt_modifier | |
2440 | | hyper_modifier | super_modifier)); | |
2441 | ||
86e5706b | 2442 | if (c == quit_char) |
284f4730 | 2443 | { |
3e51c7b7 | 2444 | extern SIGTYPE interrupt_signal (); |
c5fdd383 KH |
2445 | #ifdef MULTI_KBOARD |
2446 | KBOARD *kb; | |
5798cf15 KH |
2447 | struct input_event *sp; |
2448 | ||
1e8bd3da | 2449 | if (single_kboard |
c5fdd383 KH |
2450 | && (kb = FRAME_KBOARD (XFRAME (event->frame_or_window)), |
2451 | kb != current_kboard)) | |
5798cf15 | 2452 | { |
c5fdd383 | 2453 | kb->kbd_queue |
5798cf15 KH |
2454 | = Fcons (make_lispy_switch_frame (event->frame_or_window), |
2455 | Fcons (make_number (c), Qnil)); | |
c5fdd383 | 2456 | kb->kbd_queue_has_data = 1; |
5798cf15 KH |
2457 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
2458 | { | |
2459 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) | |
2460 | sp = kbd_buffer; | |
2461 | ||
c5fdd383 | 2462 | if (event_to_kboard (sp) == kb) |
5798cf15 KH |
2463 | { |
2464 | sp->kind = no_event; | |
2465 | sp->frame_or_window = Qnil; | |
2466 | } | |
2467 | } | |
2468 | return; | |
2469 | } | |
2470 | #endif | |
3e51c7b7 | 2471 | |
284f4730 | 2472 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2473 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2474 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2475 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2476 | { |
9b8eb840 | 2477 | Lisp_Object focus; |
4bb994d1 | 2478 | |
9b8eb840 | 2479 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2480 | if (NILP (focus)) |
beecf6a1 | 2481 | focus = event->frame_or_window; |
4c52b668 KH |
2482 | internal_last_event_frame = focus; |
2483 | Vlast_event_frame = focus; | |
4bb994d1 | 2484 | } |
3e51c7b7 | 2485 | |
ffd56f97 | 2486 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2487 | interrupt_signal (); |
2488 | return; | |
2489 | } | |
2490 | ||
2491 | if (c && c == stop_character) | |
2492 | { | |
2493 | sys_suspend (); | |
2494 | return; | |
2495 | } | |
284f4730 | 2496 | } |
3fe8e9a2 RS |
2497 | /* Don't insert two buffer_switch_event's in a row. |
2498 | Just ignore the second one. */ | |
2499 | else if (event->kind == buffer_switch_event | |
2500 | && kbd_fetch_ptr != kbd_store_ptr | |
2501 | && kbd_store_ptr->kind == buffer_switch_event) | |
2502 | return; | |
284f4730 | 2503 | |
beecf6a1 KH |
2504 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2505 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2506 | |
2507 | /* Don't let the very last slot in the buffer become full, | |
2508 | since that would make the two pointers equal, | |
2509 | and that is indistinguishable from an empty buffer. | |
2510 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2511 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2512 | { |
beecf6a1 | 2513 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2514 | sp->kind = event->kind; |
27203ead RS |
2515 | if (event->kind == selection_request_event) |
2516 | { | |
2517 | /* We must not use the ordinary copying code for this case, | |
2518 | since `part' is an enum and copying it might not copy enough | |
2519 | in this case. */ | |
612b78ef | 2520 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2521 | } |
2522 | else | |
2523 | { | |
612b78ef KH |
2524 | sp->code = event->code; |
2525 | sp->part = event->part; | |
2526 | sp->frame_or_window = event->frame_or_window; | |
2527 | sp->modifiers = event->modifiers; | |
2528 | sp->x = event->x; | |
2529 | sp->y = event->y; | |
2530 | sp->timestamp = event->timestamp; | |
27203ead | 2531 | } |
beecf6a1 KH |
2532 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2533 | - kbd_buffer] | |
7b4aedb9 | 2534 | = event->frame_or_window); |
284f4730 | 2535 | |
beecf6a1 | 2536 | kbd_store_ptr++; |
284f4730 JB |
2537 | } |
2538 | } | |
a612e298 RS |
2539 | \f |
2540 | /* Read one event from the event buffer, waiting if necessary. | |
2541 | The value is a Lisp object representing the event. | |
2542 | The value is nil for an event that should be ignored, | |
2543 | or that was handled here. | |
2544 | We always read and discard one event. */ | |
284f4730 JB |
2545 | |
2546 | static Lisp_Object | |
83d68044 | 2547 | kbd_buffer_get_event (kbp, used_mouse_menu) |
410d4de9 | 2548 | KBOARD **kbp; |
83d68044 | 2549 | int *used_mouse_menu; |
284f4730 JB |
2550 | { |
2551 | register int c; | |
2552 | Lisp_Object obj; | |
c04cbc3b | 2553 | EMACS_TIME next_timer_delay; |
284f4730 JB |
2554 | |
2555 | if (noninteractive) | |
2556 | { | |
2557 | c = getchar (); | |
18cd2eeb | 2558 | XSETINT (obj, c); |
f5b56972 | 2559 | *kbp = current_kboard; |
284f4730 JB |
2560 | return obj; |
2561 | } | |
2562 | ||
2563 | /* Wait until there is input available. */ | |
2564 | for (;;) | |
2565 | { | |
beecf6a1 KH |
2566 | if (kbd_fetch_ptr != kbd_store_ptr) |
2567 | break; | |
2568 | #ifdef HAVE_MOUSE | |
f3253854 | 2569 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
284f4730 | 2570 | break; |
beecf6a1 | 2571 | #endif |
284f4730 JB |
2572 | |
2573 | /* If the quit flag is set, then read_char will return | |
2574 | quit_char, so that counts as "available input." */ | |
2575 | if (!NILP (Vquit_flag)) | |
2576 | quit_throw_to_read_char (); | |
2577 | ||
2578 | /* One way or another, wait until input is available; then, if | |
2579 | interrupt handlers have not read it, read it now. */ | |
2580 | ||
2581 | #ifdef OLDVMS | |
2582 | wait_for_kbd_input (); | |
2583 | #else | |
2584 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2585 | #ifdef SIGIO | |
2586 | gobble_input (0); | |
2587 | #endif /* SIGIO */ | |
beecf6a1 KH |
2588 | if (kbd_fetch_ptr != kbd_store_ptr) |
2589 | break; | |
2590 | #ifdef HAVE_MOUSE | |
f3253854 | 2591 | if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
beecf6a1 KH |
2592 | break; |
2593 | #endif | |
2594 | { | |
2595 | Lisp_Object minus_one; | |
f76475ad | 2596 | |
beecf6a1 | 2597 | XSETINT (minus_one, -1); |
d9d4c147 | 2598 | wait_reading_process_input (0, 0, minus_one, 1); |
284f4730 | 2599 | |
beecf6a1 KH |
2600 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2601 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2602 | read_avail_input (1); | |
2603 | } | |
284f4730 JB |
2604 | #endif /* not VMS */ |
2605 | } | |
2606 | ||
2607 | /* At this point, we know that there is a readable event available | |
2608 | somewhere. If the event queue is empty, then there must be a | |
2609 | mouse movement enabled and available. */ | |
beecf6a1 | 2610 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2611 | { |
cd21b839 | 2612 | struct input_event *event; |
3e51c7b7 | 2613 | |
beecf6a1 KH |
2614 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2615 | ? kbd_fetch_ptr | |
2616 | : kbd_buffer); | |
3e51c7b7 | 2617 | |
cd21b839 | 2618 | last_event_timestamp = event->timestamp; |
cd21b839 | 2619 | |
c5fdd383 KH |
2620 | #ifdef MULTI_KBOARD |
2621 | *kbp = event_to_kboard (event); | |
2622 | if (*kbp == 0) | |
2623 | *kbp = current_kboard; /* Better than returning null ptr? */ | |
5798cf15 | 2624 | #else |
c5fdd383 | 2625 | *kbp = &the_only_kboard; |
5798cf15 | 2626 | #endif |
beecf6a1 | 2627 | |
4bb994d1 JB |
2628 | obj = Qnil; |
2629 | ||
48e416d4 | 2630 | /* These two kinds of events get special handling |
a612e298 RS |
2631 | and don't actually appear to the command loop. |
2632 | We return nil for them. */ | |
48e416d4 RS |
2633 | if (event->kind == selection_request_event) |
2634 | { | |
598a9fa7 | 2635 | #ifdef HAVE_X11 |
1e8bd3da RS |
2636 | struct input_event copy; |
2637 | ||
4581e928 RS |
2638 | /* Remove it from the buffer before processing it, |
2639 | since otherwise swallow_events will see it | |
2640 | and process it again. */ | |
1e8bd3da | 2641 | copy = *event; |
beecf6a1 | 2642 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2643 | input_pending = readable_events (0); |
4581e928 | 2644 | x_handle_selection_request (©); |
598a9fa7 JB |
2645 | #else |
2646 | /* We're getting selection request events, but we don't have | |
2647 | a window system. */ | |
2648 | abort (); | |
2649 | #endif | |
48e416d4 RS |
2650 | } |
2651 | ||
1e12dd87 | 2652 | else if (event->kind == selection_clear_event) |
48e416d4 | 2653 | { |
598a9fa7 | 2654 | #ifdef HAVE_X11 |
e0301c07 RS |
2655 | struct input_event copy; |
2656 | ||
2657 | /* Remove it from the buffer before processing it. */ | |
2658 | copy = *event; | |
beecf6a1 | 2659 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2660 | input_pending = readable_events (0); |
90c2bb0c | 2661 | x_handle_selection_clear (©); |
598a9fa7 JB |
2662 | #else |
2663 | /* We're getting selection request events, but we don't have | |
2664 | a window system. */ | |
2665 | abort (); | |
2666 | #endif | |
48e416d4 | 2667 | } |
e98a93eb | 2668 | #if defined (HAVE_X11) || defined (HAVE_NTGUI) |
990acea3 RS |
2669 | else if (event->kind == delete_window_event) |
2670 | { | |
bbdc2092 RS |
2671 | /* Make an event (delete-frame (FRAME)). */ |
2672 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2673 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2674 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2675 | } |
2676 | else if (event->kind == iconify_event) | |
2677 | { | |
2678 | /* Make an event (iconify-frame (FRAME)). */ | |
2679 | obj = Fcons (event->frame_or_window, Qnil); | |
2680 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2681 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2682 | } |
2683 | else if (event->kind == deiconify_event) | |
2684 | { | |
2685 | /* Make an event (make-frame-visible (FRAME)). */ | |
2686 | obj = Fcons (event->frame_or_window, Qnil); | |
2687 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2688 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2689 | } |
2690 | #endif | |
a8015ab5 KH |
2691 | else if (event->kind == buffer_switch_event) |
2692 | { | |
2693 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2694 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2695 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2696 | } |
099787c1 RS |
2697 | #ifdef USE_X_TOOLKIT |
2698 | else if (event->kind == menu_bar_activate_event) | |
2699 | { | |
2700 | kbd_fetch_ptr = event + 1; | |
d9d4c147 | 2701 | input_pending = readable_events (0); |
e649d076 RS |
2702 | if (FRAME_LIVE_P (XFRAME (event->frame_or_window))) |
2703 | x_activate_menubar (XFRAME (event->frame_or_window)); | |
099787c1 RS |
2704 | } |
2705 | #endif | |
a612e298 | 2706 | /* Just discard these, by returning nil. |
c5fdd383 | 2707 | With MULTI_KBOARD, these events are used as placeholders |
5798cf15 KH |
2708 | when we need to randomly delete events from the queue. |
2709 | (They shouldn't otherwise be found in the buffer, | |
2710 | but on some machines it appears they do show up | |
c5fdd383 | 2711 | even without MULTI_KBOARD.) */ |
a612e298 | 2712 | else if (event->kind == no_event) |
beecf6a1 | 2713 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2714 | |
4bb994d1 JB |
2715 | /* If this event is on a different frame, return a switch-frame this |
2716 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2717 | else |
2718 | { | |
9b8eb840 | 2719 | Lisp_Object frame; |
1e12dd87 | 2720 | Lisp_Object focus; |
7b4aedb9 | 2721 | |
9b8eb840 | 2722 | frame = event->frame_or_window; |
2470a66f KH |
2723 | if (CONSP (frame)) |
2724 | frame = XCONS (frame)->car; | |
2725 | else if (WINDOWP (frame)) | |
1e12dd87 | 2726 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2727 | |
1e12dd87 RS |
2728 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2729 | if (! NILP (focus)) | |
2730 | frame = focus; | |
07d2b8de | 2731 | |
4c52b668 | 2732 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2733 | && XFRAME (frame) != selected_frame) |
2734 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2735 | internal_last_event_frame = frame; |
4bb994d1 | 2736 | |
1e12dd87 RS |
2737 | /* If we didn't decide to make a switch-frame event, go ahead |
2738 | and build a real event from the queue entry. */ | |
cd21b839 | 2739 | |
1e12dd87 RS |
2740 | if (NILP (obj)) |
2741 | { | |
2742 | obj = make_lispy_event (event); | |
e98a93eb | 2743 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
83d68044 KH |
2744 | /* If this was a menu selection, then set the flag to inhibit |
2745 | writing to last_nonmenu_event. Don't do this if the event | |
2746 | we're returning is (menu-bar), though; that indicates the | |
2747 | beginning of the menu sequence, and we might as well leave | |
2748 | that as the `event with parameters' for this selection. */ | |
2749 | if (event->kind == menu_bar_event | |
2750 | && !(CONSP (obj) && EQ (XCONS (obj)->car, Qmenu_bar)) | |
2751 | && used_mouse_menu) | |
2752 | *used_mouse_menu = 1; | |
2753 | #endif | |
1e12dd87 RS |
2754 | |
2755 | /* Wipe out this event, to catch bugs. */ | |
2756 | event->kind = no_event; | |
beecf6a1 | 2757 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2758 | |
beecf6a1 | 2759 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2760 | } |
4bb994d1 | 2761 | } |
284f4730 | 2762 | } |
2eb6bfbe | 2763 | #ifdef HAVE_MOUSE |
a612e298 | 2764 | /* Try generating a mouse motion event. */ |
f3253854 | 2765 | else if (!NILP (do_mouse_tracking) && some_mouse_moved ()) |
284f4730 | 2766 | { |
f3253854 | 2767 | FRAME_PTR f = some_mouse_moved (); |
7b4aedb9 | 2768 | Lisp_Object bar_window; |
3c370943 | 2769 | enum scroll_bar_part part; |
e5d77022 JB |
2770 | Lisp_Object x, y; |
2771 | unsigned long time; | |
284f4730 | 2772 | |
c5fdd383 | 2773 | *kbp = current_kboard; |
e177ac3a RS |
2774 | /* Note that this uses F to determine which display to look at. |
2775 | If there is no valid info, it does not store anything | |
2776 | so x remains nil. */ | |
2777 | x = Qnil; | |
dd26ab75 | 2778 | (*mouse_position_hook) (&f, 0, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2779 | |
2780 | obj = Qnil; | |
284f4730 | 2781 | |
4bb994d1 JB |
2782 | /* Decide if we should generate a switch-frame event. Don't |
2783 | generate switch-frame events for motion outside of all Emacs | |
2784 | frames. */ | |
e177ac3a | 2785 | if (!NILP (x) && f) |
cd21b839 | 2786 | { |
9b8eb840 | 2787 | Lisp_Object frame; |
4bb994d1 | 2788 | |
9b8eb840 | 2789 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2790 | if (NILP (frame)) |
18cd2eeb | 2791 | XSETFRAME (frame, f); |
4bb994d1 | 2792 | |
4c52b668 | 2793 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2794 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2795 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2796 | internal_last_event_frame = frame; |
cd21b839 | 2797 | } |
4bb994d1 | 2798 | |
df0f2ba1 | 2799 | /* If we didn't decide to make a switch-frame event, go ahead and |
4bb994d1 | 2800 | return a mouse-motion event. */ |
e177ac3a | 2801 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2802 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2803 | } |
2eb6bfbe | 2804 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2805 | else |
2806 | /* We were promised by the above while loop that there was | |
2807 | something for us to read! */ | |
2808 | abort (); | |
2809 | ||
d9d4c147 | 2810 | input_pending = readable_events (0); |
284f4730 | 2811 | |
4c52b668 | 2812 | Vlast_event_frame = internal_last_event_frame; |
3c370943 | 2813 | |
284f4730 JB |
2814 | return (obj); |
2815 | } | |
a612e298 RS |
2816 | \f |
2817 | /* Process any events that are not user-visible, | |
2818 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2819 | |
2820 | void | |
d9d4c147 KH |
2821 | swallow_events (do_display) |
2822 | int do_display; | |
3a3b9632 | 2823 | { |
87dd9b9b RS |
2824 | int old_timers_run; |
2825 | ||
beecf6a1 | 2826 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2827 | { |
2828 | struct input_event *event; | |
2829 | ||
beecf6a1 KH |
2830 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2831 | ? kbd_fetch_ptr | |
2832 | : kbd_buffer); | |
3a3b9632 RS |
2833 | |
2834 | last_event_timestamp = event->timestamp; | |
2835 | ||
2836 | /* These two kinds of events get special handling | |
2837 | and don't actually appear to the command loop. */ | |
2838 | if (event->kind == selection_request_event) | |
2839 | { | |
2840 | #ifdef HAVE_X11 | |
4581e928 | 2841 | struct input_event copy; |
e0301c07 RS |
2842 | |
2843 | /* Remove it from the buffer before processing it, | |
2844 | since otherwise swallow_events called recursively could see it | |
2845 | and process it again. */ | |
4581e928 | 2846 | copy = *event; |
beecf6a1 | 2847 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2848 | input_pending = readable_events (0); |
4581e928 | 2849 | x_handle_selection_request (©); |
3a3b9632 RS |
2850 | #else |
2851 | /* We're getting selection request events, but we don't have | |
2852 | a window system. */ | |
2853 | abort (); | |
2854 | #endif | |
2855 | } | |
2856 | ||
2857 | else if (event->kind == selection_clear_event) | |
2858 | { | |
2859 | #ifdef HAVE_X11 | |
e0301c07 RS |
2860 | struct input_event copy; |
2861 | ||
2862 | /* Remove it from the buffer before processing it, */ | |
2863 | copy = *event; | |
2864 | ||
beecf6a1 | 2865 | kbd_fetch_ptr = event + 1; |
d9d4c147 | 2866 | input_pending = readable_events (0); |
90c2bb0c | 2867 | x_handle_selection_clear (©); |
3a3b9632 RS |
2868 | #else |
2869 | /* We're getting selection request events, but we don't have | |
2870 | a window system. */ | |
2871 | abort (); | |
2872 | #endif | |
2873 | } | |
4ec4ed6a | 2874 | /* Note that timer_event is currently never used. */ |
d9d4c147 KH |
2875 | else if (event->kind == timer_event) |
2876 | { | |
2877 | Lisp_Object tem, lisp_event; | |
2878 | int was_locked = single_kboard; | |
2879 | ||
2880 | tem = get_keymap_1 (Vspecial_event_map, 0, 0); | |
2881 | tem = get_keyelt (access_keymap (tem, Qtimer_event, 0, 0), | |
2882 | 1); | |
2883 | lisp_event = Fcons (Qtimer_event, | |
2884 | Fcons (Fcdr (event->frame_or_window), Qnil)); | |
2885 | kbd_fetch_ptr = event + 1; | |
2886 | if (kbd_fetch_ptr == kbd_store_ptr) | |
2887 | input_pending = 0; | |
158f7532 | 2888 | Fcommand_execute (tem, Qnil, Fvector (1, &lisp_event), Qt); |
87dd9b9b | 2889 | timers_run++; |
d9d4c147 KH |
2890 | if (do_display) |
2891 | redisplay_preserve_echo_area (); | |
2892 | ||
2893 | /* Resume allowing input from any kboard, if that was true before. */ | |
2894 | if (!was_locked) | |
2895 | any_kboard_state (); | |
2896 | } | |
3a3b9632 RS |
2897 | else |
2898 | break; | |
2899 | } | |
2900 | ||
87dd9b9b | 2901 | old_timers_run = timers_run; |
d9d4c147 | 2902 | get_input_pending (&input_pending, 1); |
87dd9b9b RS |
2903 | |
2904 | if (timers_run != old_timers_run && do_display) | |
2905 | redisplay_preserve_echo_area (); | |
3a3b9632 | 2906 | } |
a612e298 | 2907 | \f |
d9d4c147 KH |
2908 | static EMACS_TIME timer_idleness_start_time; |
2909 | ||
2910 | /* Record the start of when Emacs is idle, | |
2911 | for the sake of running idle-time timers. */ | |
2912 | ||
2913 | timer_start_idle () | |
2914 | { | |
2915 | Lisp_Object timers; | |
2916 | ||
2917 | /* If we are already in the idle state, do nothing. */ | |
2918 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) | |
2919 | return; | |
2920 | ||
2921 | EMACS_GET_TIME (timer_idleness_start_time); | |
2922 | ||
2923 | /* Mark all idle-time timers as once again candidates for running. */ | |
2924 | for (timers = Vtimer_idle_list; CONSP (timers); timers = XCONS (timers)->cdr) | |
2925 | { | |
2926 | Lisp_Object timer; | |
2927 | ||
2928 | timer = XCONS (timers)->car; | |
2929 | ||
2930 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) | |
2931 | continue; | |
2932 | XVECTOR (timer)->contents[0] = Qnil; | |
2933 | } | |
2934 | } | |
2935 | ||
2936 | /* Record that Emacs is no longer idle, so stop running idle-time timers. */ | |
2937 | ||
2938 | timer_stop_idle () | |
2939 | { | |
2940 | EMACS_SET_SECS_USECS (timer_idleness_start_time, -1, -1); | |
2941 | } | |
2942 | ||
e044e87c RS |
2943 | /* This is only for debugging. */ |
2944 | struct input_event last_timer_event; | |
2945 | ||
c04cbc3b RS |
2946 | /* Check whether a timer has fired. To prevent larger problems we simply |
2947 | disregard elements that are not proper timers. Do not make a circular | |
2948 | timer list for the time being. | |
2949 | ||
2950 | Returns the number of seconds to wait until the next timer fires. If a | |
2951 | timer is triggering now, return zero seconds. | |
2952 | If no timer is active, return -1 seconds. | |
2953 | ||
4ec4ed6a RS |
2954 | If a timer is ripe, we run it, with quitting turned off. |
2955 | ||
2956 | DO_IT_NOW is now ignored. It used to mean that we should | |
2957 | run the timer directly instead of queueing a timer-event. | |
2958 | Now we always run timers directly. */ | |
c04cbc3b RS |
2959 | |
2960 | EMACS_TIME | |
2961 | timer_check (do_it_now) | |
2962 | int do_it_now; | |
2963 | { | |
2964 | EMACS_TIME nexttime; | |
9291c072 RS |
2965 | EMACS_TIME now, idleness_now; |
2966 | Lisp_Object timers, idle_timers, chosen_timer; | |
7ea13e12 RS |
2967 | /* Nonzero if we generate some events. */ |
2968 | int events_generated = 0; | |
9291c072 | 2969 | struct gcpro gcpro1, gcpro2, gcpro3; |
c04cbc3b | 2970 | |
c04cbc3b RS |
2971 | EMACS_SET_SECS (nexttime, -1); |
2972 | EMACS_SET_USECS (nexttime, -1); | |
2973 | ||
9291c072 | 2974 | /* Always consider the ordinary timers. */ |
7ea13e12 | 2975 | timers = Vtimer_list; |
9291c072 RS |
2976 | /* Consider the idle timers only if Emacs is idle. */ |
2977 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) | |
2978 | idle_timers = Vtimer_idle_list; | |
2979 | else | |
2980 | idle_timers = Qnil; | |
2981 | chosen_timer = Qnil; | |
2982 | GCPRO3 (timers, idle_timers, chosen_timer); | |
7ea13e12 | 2983 | |
9291c072 | 2984 | if (CONSP (timers) || CONSP (idle_timers)) |
c04cbc3b | 2985 | { |
9291c072 RS |
2986 | EMACS_GET_TIME (now); |
2987 | if (! EMACS_TIME_NEG_P (timer_idleness_start_time)) | |
2988 | EMACS_SUB_TIME (idleness_now, now, timer_idleness_start_time); | |
2989 | } | |
c04cbc3b | 2990 | |
9291c072 RS |
2991 | while (CONSP (timers) || CONSP (idle_timers)) |
2992 | { | |
2993 | int triggertime = EMACS_SECS (now); | |
2994 | Lisp_Object *vector; | |
2995 | Lisp_Object timer, idle_timer; | |
2996 | EMACS_TIME timer_time, idle_timer_time; | |
2997 | EMACS_TIME difference, timer_difference, idle_timer_difference; | |
2998 | ||
2999 | /* Skip past invalid timers and timers already handled. */ | |
3000 | if (!NILP (timers)) | |
c04cbc3b | 3001 | { |
d9d4c147 | 3002 | timer = XCONS (timers)->car; |
9291c072 RS |
3003 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
3004 | { | |
3005 | timers = XCONS (timers)->cdr; | |
3006 | continue; | |
3007 | } | |
3008 | vector = XVECTOR (timer)->contents; | |
d9d4c147 | 3009 | |
9291c072 RS |
3010 | if (!INTEGERP (vector[1]) || !INTEGERP (vector[2]) |
3011 | || !INTEGERP (vector[3]) | |
3012 | || ! NILP (vector[0])) | |
3013 | { | |
3014 | timers = XCONS (timers)->cdr; | |
3015 | continue; | |
3016 | } | |
3017 | } | |
3018 | if (!NILP (idle_timers)) | |
3019 | { | |
3020 | timer = XCONS (idle_timers)->car; | |
d9d4c147 | 3021 | if (!VECTORP (timer) || XVECTOR (timer)->size != 8) |
9291c072 RS |
3022 | { |
3023 | idle_timers = XCONS (idle_timers)->cdr; | |
3024 | continue; | |
3025 | } | |
d9d4c147 KH |
3026 | vector = XVECTOR (timer)->contents; |
3027 | ||
3028 | if (!INTEGERP (vector[1]) || !INTEGERP (vector[2]) | |
9291c072 RS |
3029 | || !INTEGERP (vector[3]) |
3030 | || ! NILP (vector[0])) | |
3031 | { | |
3032 | idle_timers = XCONS (idle_timers)->cdr; | |
3033 | continue; | |
3034 | } | |
3035 | } | |
d9d4c147 | 3036 | |
9291c072 RS |
3037 | /* Set TIMER, TIMER_TIME and TIMER_DIFFERENCE |
3038 | based on the next ordinary timer. | |
3039 | TIMER_DIFFERENCE is the distance in time from NOW to when | |
3040 | this timer becomes ripe (negative if it's already ripe). */ | |
3041 | if (!NILP (timers)) | |
3042 | { | |
3043 | timer = XCONS (timers)->car; | |
3044 | vector = XVECTOR (timer)->contents; | |
d9d4c147 KH |
3045 | EMACS_SET_SECS (timer_time, |
3046 | (XINT (vector[1]) << 16) | (XINT (vector[2]))); | |
3047 | EMACS_SET_USECS (timer_time, XINT (vector[3])); | |
9291c072 RS |
3048 | EMACS_SUB_TIME (timer_difference, timer_time, now); |
3049 | } | |
ba8dfba8 | 3050 | |
9291c072 RS |
3051 | /* Set IDLE_TIMER, IDLE_TIMER_TIME and IDLE_TIMER_DIFFERENCE |
3052 | based on the next idle timer. */ | |
3053 | if (!NILP (idle_timers)) | |
3054 | { | |
3055 | idle_timer = XCONS (idle_timers)->car; | |
3056 | vector = XVECTOR (idle_timer)->contents; | |
3057 | EMACS_SET_SECS (idle_timer_time, | |
3058 | (XINT (vector[1]) << 16) | (XINT (vector[2]))); | |
3059 | EMACS_SET_USECS (idle_timer_time, XINT (vector[3])); | |
3060 | EMACS_SUB_TIME (idle_timer_difference, idle_timer_time, idleness_now); | |
3061 | } | |
ba8dfba8 | 3062 | |
9291c072 RS |
3063 | /* Decide which timer is the next timer, |
3064 | and set CHOSEN_TIMER, VECTOR and DIFFERENCE accordingly. | |
3065 | Also step down the list where we found that timer. */ | |
d9d4c147 | 3066 | |
9291c072 RS |
3067 | if (! NILP (timers) && ! NILP (idle_timers)) |
3068 | { | |
3069 | EMACS_TIME temp; | |
3070 | EMACS_SUB_TIME (temp, timer_difference, idle_timer_difference); | |
3071 | if (EMACS_TIME_NEG_P (temp)) | |
3072 | { | |
3073 | chosen_timer = timer; | |
3074 | timers = XCONS (timers)->cdr; | |
3075 | difference = timer_difference; | |
c04cbc3b | 3076 | } |
d9d4c147 | 3077 | else |
d9d4c147 | 3078 | { |
9291c072 RS |
3079 | chosen_timer = idle_timer; |
3080 | idle_timers = XCONS (idle_timers)->cdr; | |
3081 | difference = idle_timer_difference; | |
d9d4c147 | 3082 | } |
7ea13e12 | 3083 | } |
9291c072 RS |
3084 | else if (! NILP (timers)) |
3085 | { | |
3086 | chosen_timer = timer; | |
3087 | timers = XCONS (timers)->cdr; | |
3088 | difference = timer_difference; | |
3089 | } | |
3090 | else | |
3091 | { | |
3092 | chosen_timer = idle_timer; | |
3093 | idle_timers = XCONS (idle_timers)->cdr; | |
3094 | difference = idle_timer_difference; | |
3095 | } | |
3096 | vector = XVECTOR (chosen_timer)->contents; | |
3097 | ||
3098 | /* If timer is rupe, run it if it hasn't been run. */ | |
3099 | if (EMACS_TIME_NEG_P (difference) | |
3100 | || (EMACS_SECS (difference) == 0 | |
3101 | && EMACS_USECS (difference) == 0)) | |
3102 | { | |
3103 | if (NILP (vector[0])) | |
3104 | { | |
3105 | /* Mark the timer as triggered to prevent problems if the lisp | |
3106 | code fails to reschedule it right. */ | |
3107 | vector[0] = Qt; | |
3108 | ||
3109 | /* Run the timer or queue a timer event. */ | |
4ec4ed6a | 3110 | if (1) |
9291c072 RS |
3111 | { |
3112 | Lisp_Object tem, event; | |
3113 | int was_locked = single_kboard; | |
4ec4ed6a RS |
3114 | int count = specpdl_ptr - specpdl; |
3115 | ||
3116 | specbind (Qinhibit_quit, Qt); | |
9291c072 RS |
3117 | |
3118 | tem = get_keymap_1 (Vspecial_event_map, 0, 0); | |
3119 | tem = get_keyelt (access_keymap (tem, Qtimer_event, 0, 0), | |
3120 | 1); | |
3121 | event = Fcons (Qtimer_event, Fcons (chosen_timer, Qnil)); | |
3122 | Fcommand_execute (tem, Qnil, Fvector (1, &event), Qt); | |
87dd9b9b | 3123 | timers_run++; |
9291c072 | 3124 | |
4ec4ed6a RS |
3125 | unbind_to (count, Qnil); |
3126 | ||
9291c072 RS |
3127 | /* Resume allowing input from any kboard, if that was true before. */ |
3128 | if (!was_locked) | |
3129 | any_kboard_state (); | |
3130 | ||
3131 | /* Since we have handled the event, | |
3132 | we don't need to tell the caller to wake up and do it. */ | |
3133 | } | |
4ec4ed6a | 3134 | #if 0 |
9291c072 RS |
3135 | else |
3136 | { | |
3137 | /* Generate a timer event so the caller will handle it. */ | |
3138 | struct input_event event; | |
3139 | ||
3140 | event.kind = timer_event; | |
3141 | event.modifiers = 0; | |
3142 | event.x = event.y = Qnil; | |
3143 | event.timestamp = triggertime; | |
3144 | /* Store the timer in the frame slot. */ | |
3145 | event.frame_or_window | |
3146 | = Fcons (Fselected_frame (), chosen_timer); | |
3147 | kbd_buffer_store_event (&event); | |
3148 | ||
e044e87c RS |
3149 | last_timer_event = event; |
3150 | ||
9291c072 RS |
3151 | /* Tell caller to handle this event right away. */ |
3152 | events_generated = 1; | |
3153 | EMACS_SET_SECS (nexttime, 0); | |
3154 | EMACS_SET_USECS (nexttime, 0); | |
87dd9b9b RS |
3155 | |
3156 | /* Don't queue more than one event at once. | |
3157 | When Emacs is ready for another, it will | |
3158 | queue the next one. */ | |
3159 | UNGCPRO; | |
3160 | return nexttime; | |
9291c072 | 3161 | } |
4ec4ed6a | 3162 | #endif /* 0 */ |
9291c072 RS |
3163 | } |
3164 | } | |
3165 | else | |
3166 | /* When we encounter a timer that is still waiting, | |
3167 | return the amount of time to wait before it is ripe. */ | |
3168 | { | |
3169 | UNGCPRO; | |
3170 | /* But if we generated an event, | |
3171 | tell the caller to handle it now. */ | |
3172 | if (events_generated) | |
3173 | return nexttime; | |
3174 | return difference; | |
3175 | } | |
c04cbc3b | 3176 | } |
9291c072 | 3177 | |
7ea13e12 RS |
3178 | /* No timers are pending in the future. */ |
3179 | /* Return 0 if we generated an event, and -1 if not. */ | |
3180 | UNGCPRO; | |
c04cbc3b RS |
3181 | return nexttime; |
3182 | } | |
3183 | \f | |
284f4730 | 3184 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 3185 | static Lisp_Object accent_key_syms; |
284f4730 JB |
3186 | static Lisp_Object func_key_syms; |
3187 | static Lisp_Object mouse_syms; | |
3188 | ||
e9bf89a0 RS |
3189 | /* This is a list of keysym codes for special "accent" characters. |
3190 | It parallels lispy_accent_keys. */ | |
3191 | ||
3192 | static int lispy_accent_codes[] = | |
3193 | { | |
79a7046c | 3194 | #ifdef XK_dead_circumflex |
e9bf89a0 | 3195 | XK_dead_circumflex, |
79a7046c RS |
3196 | #else |
3197 | 0, | |
3198 | #endif | |
3199 | #ifdef XK_dead_grave | |
e9bf89a0 | 3200 | XK_dead_grave, |
79a7046c RS |
3201 | #else |
3202 | 0, | |
3203 | #endif | |
3204 | #ifdef XK_dead_tilde | |
e9bf89a0 | 3205 | XK_dead_tilde, |
79a7046c RS |
3206 | #else |
3207 | 0, | |
3208 | #endif | |
3209 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 3210 | XK_dead_diaeresis, |
79a7046c RS |
3211 | #else |
3212 | 0, | |
3213 | #endif | |
3214 | #ifdef XK_dead_macron | |
e9bf89a0 | 3215 | XK_dead_macron, |
79a7046c RS |
3216 | #else |
3217 | 0, | |
3218 | #endif | |
3219 | #ifdef XK_dead_degree | |
e9bf89a0 | 3220 | XK_dead_degree, |
79a7046c RS |
3221 | #else |
3222 | 0, | |
3223 | #endif | |
3224 | #ifdef XK_dead_acute | |
e9bf89a0 | 3225 | XK_dead_acute, |
79a7046c RS |
3226 | #else |
3227 | 0, | |
3228 | #endif | |
3229 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 3230 | XK_dead_cedilla, |
79a7046c RS |
3231 | #else |
3232 | 0, | |
3233 | #endif | |
3234 | #ifdef XK_dead_breve | |
e9bf89a0 | 3235 | XK_dead_breve, |
79a7046c RS |
3236 | #else |
3237 | 0, | |
3238 | #endif | |
3239 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 3240 | XK_dead_ogonek, |
79a7046c RS |
3241 | #else |
3242 | 0, | |
3243 | #endif | |
3244 | #ifdef XK_dead_caron | |
e9bf89a0 | 3245 | XK_dead_caron, |
79a7046c RS |
3246 | #else |
3247 | 0, | |
3248 | #endif | |
3249 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 3250 | XK_dead_doubleacute, |
79a7046c RS |
3251 | #else |
3252 | 0, | |
3253 | #endif | |
3254 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 3255 | XK_dead_abovedot, |
79a7046c RS |
3256 | #else |
3257 | 0, | |
3258 | #endif | |
e9bf89a0 RS |
3259 | }; |
3260 | ||
3261 | /* This is a list of Lisp names for special "accent" characters. | |
3262 | It parallels lispy_accent_codes. */ | |
3263 | ||
3264 | static char *lispy_accent_keys[] = | |
3265 | { | |
3266 | "dead-circumflex", | |
3267 | "dead-grave", | |
3268 | "dead-tilde", | |
3269 | "dead-diaeresis", | |
3270 | "dead-macron", | |
3271 | "dead-degree", | |
3272 | "dead-acute", | |
3273 | "dead-cedilla", | |
3274 | "dead-breve", | |
3275 | "dead-ogonek", | |
3276 | "dead-caron", | |
3277 | "dead-doubleacute", | |
3278 | "dead-abovedot", | |
3279 | }; | |
3280 | ||
e98a93eb GV |
3281 | #ifdef HAVE_NTGUI |
3282 | #define FUNCTION_KEY_OFFSET 0x0 | |
3283 | ||
3284 | char *lispy_function_keys[] = | |
3285 | { | |
3286 | 0, /* 0 */ | |
3287 | ||
3288 | 0, /* VK_LBUTTON 0x01 */ | |
3289 | 0, /* VK_RBUTTON 0x02 */ | |
3290 | "cancel", /* VK_CANCEL 0x03 */ | |
3291 | 0, /* VK_MBUTTON 0x04 */ | |
3292 | ||
3293 | 0, 0, 0, /* 0x05 .. 0x07 */ | |
3294 | ||
3295 | "backspace", /* VK_BACK 0x08 */ | |
3296 | "tab", /* VK_TAB 0x09 */ | |
3297 | ||
3298 | 0, 0, /* 0x0A .. 0x0B */ | |
3299 | ||
3300 | "clear", /* VK_CLEAR 0x0C */ | |
3301 | "return", /* VK_RETURN 0x0D */ | |
3302 | ||
3303 | 0, 0, /* 0x0E .. 0x0F */ | |
3304 | ||
3305 | "shift", /* VK_SHIFT 0x10 */ | |
3306 | "control", /* VK_CONTROL 0x11 */ | |
3307 | "menu", /* VK_MENU 0x12 */ | |
3308 | "pause", /* VK_PAUSE 0x13 */ | |
3309 | "capital", /* VK_CAPITAL 0x14 */ | |
3310 | ||
3311 | 0, 0, 0, 0, 0, 0, /* 0x15 .. 0x1A */ | |
3312 | ||
3313 | 0, /* VK_ESCAPE 0x1B */ | |
3314 | ||
3315 | 0, 0, 0, 0, /* 0x1C .. 0x1F */ | |
3316 | ||
3317 | 0, /* VK_SPACE 0x20 */ | |
3318 | "prior", /* VK_PRIOR 0x21 */ | |
3319 | "next", /* VK_NEXT 0x22 */ | |
3320 | "end", /* VK_END 0x23 */ | |
3321 | "home", /* VK_HOME 0x24 */ | |
3322 | "left", /* VK_LEFT 0x25 */ | |
3323 | "up", /* VK_UP 0x26 */ | |
3324 | "right", /* VK_RIGHT 0x27 */ | |
3325 | "down", /* VK_DOWN 0x28 */ | |
3326 | "select", /* VK_SELECT 0x29 */ | |
3327 | "print", /* VK_PRINT 0x2A */ | |
3328 | "execute", /* VK_EXECUTE 0x2B */ | |
3329 | "snapshot", /* VK_SNAPSHOT 0x2C */ | |
3330 | "insert", /* VK_INSERT 0x2D */ | |
3331 | "delete", /* VK_DELETE 0x2E */ | |
3332 | "help", /* VK_HELP 0x2F */ | |
3333 | ||
3334 | /* VK_0 thru VK_9 are the same as ASCII '0' thru '9' (0x30 - 0x39) */ | |
3335 | ||
3336 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3337 | ||
3338 | 0, 0, 0, 0, 0, 0, 0, /* 0x3A .. 0x40 */ | |
3339 | ||
3340 | /* VK_A thru VK_Z are the same as ASCII 'A' thru 'Z' (0x41 - 0x5A) */ | |
3341 | ||
3342 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3343 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3344 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3345 | ||
e376f90d RS |
3346 | "lwindow", /* VK_LWIN 0x5B */ |
3347 | "rwindow", /* VK_RWIN 0x5C */ | |
3348 | "apps", /* VK_APPS 0x5D */ | |
e98a93eb GV |
3349 | |
3350 | 0, 0, /* 0x5E .. 0x5F */ | |
3351 | ||
3352 | "kp-0", /* VK_NUMPAD0 0x60 */ | |
3353 | "kp-1", /* VK_NUMPAD1 0x61 */ | |
3354 | "kp-2", /* VK_NUMPAD2 0x62 */ | |
3355 | "kp-3", /* VK_NUMPAD3 0x63 */ | |
3356 | "kp-4", /* VK_NUMPAD4 0x64 */ | |
3357 | "kp-5", /* VK_NUMPAD5 0x65 */ | |
3358 | "kp-6", /* VK_NUMPAD6 0x66 */ | |
3359 | "kp-7", /* VK_NUMPAD7 0x67 */ | |
3360 | "kp-8", /* VK_NUMPAD8 0x68 */ | |
3361 | "kp-9", /* VK_NUMPAD9 0x69 */ | |
3362 | "kp-multiply", /* VK_MULTIPLY 0x6A */ | |
3363 | "kp-add", /* VK_ADD 0x6B */ | |
3364 | "kp-separator", /* VK_SEPARATOR 0x6C */ | |
3365 | "kp-subtract", /* VK_SUBTRACT 0x6D */ | |
3366 | "kp-decimal", /* VK_DECIMAL 0x6E */ | |
3367 | "kp-divide", /* VK_DIVIDE 0x6F */ | |
3368 | "f1", /* VK_F1 0x70 */ | |
3369 | "f2", /* VK_F2 0x71 */ | |
3370 | "f3", /* VK_F3 0x72 */ | |
3371 | "f4", /* VK_F4 0x73 */ | |
3372 | "f5", /* VK_F5 0x74 */ | |
3373 | "f6", /* VK_F6 0x75 */ | |
3374 | "f7", /* VK_F7 0x76 */ | |
3375 | "f8", /* VK_F8 0x77 */ | |
3376 | "f9", /* VK_F9 0x78 */ | |
3377 | "f10", /* VK_F10 0x79 */ | |
3378 | "f11", /* VK_F11 0x7A */ | |
3379 | "f12", /* VK_F12 0x7B */ | |
3380 | "f13", /* VK_F13 0x7C */ | |
3381 | "f14", /* VK_F14 0x7D */ | |
3382 | "f15", /* VK_F15 0x7E */ | |
3383 | "f16", /* VK_F16 0x7F */ | |
3384 | "f17", /* VK_F17 0x80 */ | |
3385 | "f18", /* VK_F18 0x81 */ | |
3386 | "f19", /* VK_F19 0x82 */ | |
3387 | "f20", /* VK_F20 0x83 */ | |
3388 | "f21", /* VK_F21 0x84 */ | |
3389 | "f22", /* VK_F22 0x85 */ | |
3390 | "f23", /* VK_F23 0x86 */ | |
3391 | "f24", /* VK_F24 0x87 */ | |
3392 | ||
3393 | 0, 0, 0, 0, /* 0x88 .. 0x8B */ | |
3394 | 0, 0, 0, 0, /* 0x8C .. 0x8F */ | |
3395 | ||
3396 | "kp-numlock", /* VK_NUMLOCK 0x90 */ | |
3397 | "scroll", /* VK_SCROLL 0x91 */ | |
3398 | ||
e376f90d RS |
3399 | "kp-space", /* VK_NUMPAD_CLEAR 0x92 */ |
3400 | "kp-enter", /* VK_NUMPAD_ENTER 0x93 */ | |
3401 | "kp-prior", /* VK_NUMPAD_PRIOR 0x94 */ | |
3402 | "kp-next", /* VK_NUMPAD_NEXT 0x95 */ | |
3403 | "kp-end", /* VK_NUMPAD_END 0x96 */ | |
3404 | "kp-home", /* VK_NUMPAD_HOME 0x97 */ | |
3405 | "kp-left", /* VK_NUMPAD_LEFT 0x98 */ | |
3406 | "kp-up", /* VK_NUMPAD_UP 0x99 */ | |
3407 | "kp-right", /* VK_NUMPAD_RIGHT 0x9A */ | |
3408 | "kp-down", /* VK_NUMPAD_DOWN 0x9B */ | |
3409 | "kp-insert", /* VK_NUMPAD_INSERT 0x9C */ | |
3410 | "kp-delete", /* VK_NUMPAD_DELETE 0x9D */ | |
3411 | ||
3412 | 0, 0, /* 0x9E .. 0x9F */ | |
3413 | ||
e98a93eb GV |
3414 | /* |
3415 | * VK_L* & VK_R* - left and right Alt, Ctrl and Shift virtual keys. | |
3416 | * Used only as parameters to GetAsyncKeyState() and GetKeyState(). | |
3417 | * No other API or message will distinguish left and right keys this way. | |
3418 | */ | |
3419 | /* 0xA0 .. 0xEF */ | |
3420 | ||
3421 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3422 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3423 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3424 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3425 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
3426 | ||
3427 | /* 0xF0 .. 0xF5 */ | |
3428 | ||
3429 | 0, 0, 0, 0, 0, 0, | |
3430 | ||
3431 | "attn", /* VK_ATTN 0xF6 */ | |
3432 | "crsel", /* VK_CRSEL 0xF7 */ | |
3433 | "exsel", /* VK_EXSEL 0xF8 */ | |
3434 | "ereof", /* VK_EREOF 0xF9 */ | |
3435 | "play", /* VK_PLAY 0xFA */ | |
3436 | "zoom", /* VK_ZOOM 0xFB */ | |
3437 | "noname", /* VK_NONAME 0xFC */ | |
3438 | "pa1", /* VK_PA1 0xFD */ | |
3439 | "oem_clear", /* VK_OEM_CLEAR 0xFE */ | |
3440 | }; | |
3441 | ||
3442 | #else | |
3443 | ||
3444 | #define FUNCTION_KEY_OFFSET 0xff00 | |
3445 | ||
284f4730 JB |
3446 | /* You'll notice that this table is arranged to be conveniently |
3447 | indexed by X Windows keysym values. */ | |
3448 | static char *lispy_function_keys[] = | |
3449 | { | |
3450 | /* X Keysym value */ | |
3451 | ||
80e4aa30 | 3452 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
3453 | "backspace", |
3454 | "tab", | |
3455 | "linefeed", | |
3456 | "clear", | |
3457 | 0, | |
3458 | "return", | |
3459 | 0, 0, | |
3460 | 0, 0, 0, /* 0xff10 */ | |
3461 | "pause", | |
3462 | 0, 0, 0, 0, 0, 0, 0, | |
3463 | "escape", | |
3464 | 0, 0, 0, 0, | |
3465 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
3466 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
3467 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
3468 | ||
284f4730 JB |
3469 | "home", /* 0xff50 */ /* IsCursorKey */ |
3470 | "left", | |
3471 | "up", | |
3472 | "right", | |
3473 | "down", | |
3474 | "prior", | |
3475 | "next", | |
3476 | "end", | |
3477 | "begin", | |
3478 | 0, /* 0xff59 */ | |
3479 | 0, 0, 0, 0, 0, 0, | |
3480 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
3481 | "print", | |
3482 | "execute", | |
3483 | "insert", | |
3484 | 0, /* 0xff64 */ | |
3485 | "undo", | |
3486 | "redo", | |
3487 | "menu", | |
3488 | "find", | |
3489 | "cancel", | |
3490 | "help", | |
3491 | "break", /* 0xff6b */ | |
3492 | ||
9fdbfdf8 | 3493 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 3494 | 0, /* 0xff76 */ |
36ae397e | 3495 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
3496 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
3497 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3498 | "kp-tab", /* 0xff89 */ | |
3499 | 0, 0, 0, | |
3500 | "kp-enter", /* 0xff8d */ | |
3501 | 0, 0, 0, | |
3502 | "kp-f1", /* 0xff91 */ | |
3503 | "kp-f2", | |
3504 | "kp-f3", | |
3505 | "kp-f4", | |
872157e7 RS |
3506 | "kp-home", /* 0xff95 */ |
3507 | "kp-left", | |
3508 | "kp-up", | |
3509 | "kp-right", | |
3510 | "kp-down", | |
3511 | "kp-prior", /* kp-page-up */ | |
3512 | "kp-next", /* kp-page-down */ | |
3513 | "kp-end", | |
3514 | "kp-begin", | |
3515 | "kp-insert", | |
3516 | "kp-delete", | |
3517 | 0, /* 0xffa0 */ | |
3518 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
3519 | "kp-multiply", /* 0xffaa */ |
3520 | "kp-add", | |
3521 | "kp-separator", | |
3522 | "kp-subtract", | |
3523 | "kp-decimal", | |
3524 | "kp-divide", /* 0xffaf */ | |
3525 | "kp-0", /* 0xffb0 */ | |
3526 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
3527 | 0, /* 0xffba */ | |
3528 | 0, 0, | |
3529 | "kp-equal", /* 0xffbd */ | |
3530 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
3531 | "f2", |
3532 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
3533 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
3534 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
3535 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
3536 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
3537 | 0, 0, 0, 0, 0, 0, 0, 0, | |
3538 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
3539 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
3540 | }; |
3541 | ||
e98a93eb GV |
3542 | #endif /* HAVE_NTGUI */ |
3543 | ||
df0f2ba1 | 3544 | static char *lispy_mouse_names[] = |
284f4730 JB |
3545 | { |
3546 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
3547 | }; | |
3548 | ||
3c370943 | 3549 | /* Scroll bar parts. */ |
4bb994d1 | 3550 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
db08707d | 3551 | Lisp_Object Qup, Qdown; |
4bb994d1 | 3552 | |
3c370943 JB |
3553 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
3554 | Lisp_Object *scroll_bar_parts[] = { | |
db08707d RS |
3555 | &Qabove_handle, &Qhandle, &Qbelow_handle, |
3556 | &Qup, &Qdown, | |
4bb994d1 JB |
3557 | }; |
3558 | ||
3559 | ||
7b4aedb9 | 3560 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 3561 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
3562 | |
3563 | The elements have the form | |
3564 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
3565 | where REST is the cdr of a position as it would be reported in the event. | |
3566 | ||
3567 | The make_lispy_event function stores positions here to tell the | |
3568 | difference between click and drag events, and to store the starting | |
3569 | location to be included in drag events. */ | |
3570 | ||
3571 | static Lisp_Object button_down_location; | |
88cb0656 | 3572 | |
fbcd35bd JB |
3573 | /* Information about the most recent up-going button event: Which |
3574 | button, what location, and what time. */ | |
3575 | ||
559f9d04 RS |
3576 | static int last_mouse_button; |
3577 | static int last_mouse_x; | |
3578 | static int last_mouse_y; | |
3579 | static unsigned long button_down_time; | |
fbcd35bd | 3580 | |
564dc952 JB |
3581 | /* The maximum time between clicks to make a double-click, |
3582 | or Qnil to disable double-click detection, | |
3583 | or Qt for no time limit. */ | |
3584 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
3585 | |
3586 | /* The number of clicks in this multiple-click. */ | |
3587 | ||
3588 | int double_click_count; | |
3589 | ||
284f4730 JB |
3590 | /* Given a struct input_event, build the lisp event which represents |
3591 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
3592 | movement buffer, which should have a movement event in it. |
3593 | ||
3594 | Note that events must be passed to this function in the order they | |
3595 | are received; this function stores the location of button presses | |
3596 | in order to build drag events when the button is released. */ | |
284f4730 JB |
3597 | |
3598 | static Lisp_Object | |
3599 | make_lispy_event (event) | |
3600 | struct input_event *event; | |
3601 | { | |
79a7046c RS |
3602 | int i; |
3603 | ||
0220c518 | 3604 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 3605 | { |
284f4730 JB |
3606 | /* A simple keystroke. */ |
3607 | case ascii_keystroke: | |
86e5706b | 3608 | { |
9343ab07 | 3609 | Lisp_Object lispy_c; |
e9bf89a0 | 3610 | int c = event->code & 0377; |
5a1c6df8 JB |
3611 | /* Turn ASCII characters into control characters |
3612 | when proper. */ | |
3613 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
3614 | c = make_ctrl_char (c); |
3615 | ||
3616 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
3617 | just above, and the shift key was taken care of by the X code, | |
3618 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
3619 | c |= (event->modifiers |
3620 | & (meta_modifier | alt_modifier | |
3621 | | hyper_modifier | super_modifier)); | |
559f9d04 | 3622 | button_down_time = 0; |
bb9e9bed | 3623 | XSETFASTINT (lispy_c, c); |
9343ab07 | 3624 | return lispy_c; |
86e5706b | 3625 | } |
284f4730 JB |
3626 | |
3627 | /* A function key. The symbol may need to have modifier prefixes | |
3628 | tacked onto it. */ | |
3629 | case non_ascii_keystroke: | |
559f9d04 | 3630 | button_down_time = 0; |
e9bf89a0 RS |
3631 | |
3632 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
3633 | if (event->code == lispy_accent_codes[i]) | |
3634 | return modify_event_symbol (i, | |
3635 | event->modifiers, | |
80e4aa30 | 3636 | Qfunction_key, Qnil, |
e9bf89a0 RS |
3637 | lispy_accent_keys, &accent_key_syms, |
3638 | (sizeof (lispy_accent_keys) | |
3639 | / sizeof (lispy_accent_keys[0]))); | |
3640 | ||
270a208f | 3641 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
3642 | if (event->code & (1 << 28)) |
3643 | { | |
3644 | /* We need to use an alist rather than a vector as the cache | |
3645 | since we can't make a vector long enuf. */ | |
142e6c73 KH |
3646 | if (NILP (current_kboard->system_key_syms)) |
3647 | current_kboard->system_key_syms = Fcons (Qnil, Qnil); | |
2c834fb3 | 3648 | return modify_event_symbol (event->code, |
80e4aa30 | 3649 | event->modifiers, |
7c97ffdc KH |
3650 | Qfunction_key, |
3651 | current_kboard->Vsystem_key_alist, | |
142e6c73 KH |
3652 | 0, ¤t_kboard->system_key_syms, |
3653 | (unsigned)-1); | |
80e4aa30 RS |
3654 | } |
3655 | ||
e98a93eb | 3656 | return modify_event_symbol (event->code - FUNCTION_KEY_OFFSET, |
e9bf89a0 | 3657 | event->modifiers, |
80e4aa30 | 3658 | Qfunction_key, Qnil, |
284f4730 JB |
3659 | lispy_function_keys, &func_key_syms, |
3660 | (sizeof (lispy_function_keys) | |
3661 | / sizeof (lispy_function_keys[0]))); | |
3662 | break; | |
3663 | ||
4ec4ed6a | 3664 | /* Note that timer_event is currently never used. */ |
c04cbc3b | 3665 | case timer_event: |
7ea13e12 | 3666 | return Fcons (Qtimer_event, Fcons (Fcdr (event->frame_or_window), Qnil)); |
c04cbc3b | 3667 | |
514354e9 | 3668 | #ifdef HAVE_MOUSE |
df0f2ba1 | 3669 | /* A mouse click. Figure out where it is, decide whether it's |
88cb0656 | 3670 | a press, click or drag, and build the appropriate structure. */ |
284f4730 | 3671 | case mouse_click: |
3c370943 | 3672 | case scroll_bar_click: |
284f4730 | 3673 | { |
e9bf89a0 | 3674 | int button = event->code; |
559f9d04 | 3675 | int is_double; |
7b4aedb9 | 3676 | Lisp_Object position; |
dbc4e1c1 JB |
3677 | Lisp_Object *start_pos_ptr; |
3678 | Lisp_Object start_pos; | |
284f4730 | 3679 | |
7b4aedb9 | 3680 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
3681 | abort (); |
3682 | ||
7b4aedb9 JB |
3683 | /* Build the position as appropriate for this mouse click. */ |
3684 | if (event->kind == mouse_click) | |
284f4730 | 3685 | { |
7b4aedb9 | 3686 | int part; |
598a9fa7 | 3687 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 3688 | Lisp_Object window; |
7b4aedb9 | 3689 | Lisp_Object posn; |
9e20143a RS |
3690 | int row, column; |
3691 | ||
5da3133a RS |
3692 | /* Ignore mouse events that were made on frame that |
3693 | have been deleted. */ | |
3694 | if (! FRAME_LIVE_P (f)) | |
3695 | return Qnil; | |
3696 | ||
9e20143a | 3697 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
6c6a9be8 | 3698 | &column, &row, NULL, 1); |
7b4aedb9 | 3699 | |
eef045bf RS |
3700 | #ifndef USE_X_TOOLKIT |
3701 | /* In the non-toolkit version, clicks on the menu bar | |
3702 | are ordinary button events in the event buffer. | |
3703 | Distinguish them, and invoke the menu. | |
3704 | ||
3705 | (In the toolkit version, the toolkit handles the menu bar | |
3706 | and Emacs doesn't know about it until after the user | |
3707 | makes a selection.) */ | |
2ee250ec RS |
3708 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f) |
3709 | && (event->modifiers & down_modifier)) | |
bb936752 | 3710 | { |
b7c49376 | 3711 | Lisp_Object items, item; |
0a0e8fe6 RS |
3712 | int hpos; |
3713 | int i; | |
3714 | ||
2ee250ec | 3715 | #if 0 |
0a0e8fe6 RS |
3716 | /* Activate the menu bar on the down event. If the |
3717 | up event comes in before the menu code can deal with it, | |
3718 | just ignore it. */ | |
3719 | if (! (event->modifiers & down_modifier)) | |
3720 | return Qnil; | |
2ee250ec | 3721 | #endif |
0aafc975 | 3722 | |
f2ae6b3f | 3723 | item = Qnil; |
5ec75a55 | 3724 | items = FRAME_MENU_BAR_ITEMS (f); |
35b3402f | 3725 | for (i = 0; i < XVECTOR (items)->size; i += 4) |
5ec75a55 RS |
3726 | { |
3727 | Lisp_Object pos, string; | |
b7c49376 | 3728 | string = XVECTOR (items)->contents[i + 1]; |
35b3402f | 3729 | pos = XVECTOR (items)->contents[i + 3]; |
b7c49376 RS |
3730 | if (NILP (string)) |
3731 | break; | |
9e20143a RS |
3732 | if (column >= XINT (pos) |
3733 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
3734 | { |
3735 | item = XVECTOR (items)->contents[i]; | |
3736 | break; | |
3737 | } | |
5ec75a55 | 3738 | } |
9e20143a | 3739 | |
5ec75a55 RS |
3740 | position |
3741 | = Fcons (event->frame_or_window, | |
3742 | Fcons (Qmenu_bar, | |
3743 | Fcons (Fcons (event->x, event->y), | |
3744 | Fcons (make_number (event->timestamp), | |
3745 | Qnil)))); | |
3746 | ||
b7c49376 | 3747 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 3748 | } |
eef045bf | 3749 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 3750 | |
9e20143a | 3751 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 3752 | |
8c18cbfb | 3753 | if (!WINDOWP (window)) |
78ced549 RS |
3754 | { |
3755 | window = event->frame_or_window; | |
3756 | posn = Qnil; | |
3757 | } | |
284f4730 | 3758 | else |
7b4aedb9 | 3759 | { |
9e20143a RS |
3760 | int pixcolumn, pixrow; |
3761 | column -= XINT (XWINDOW (window)->left); | |
3762 | row -= XINT (XWINDOW (window)->top); | |
3763 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
3764 | XSETINT (event->x, pixcolumn); | |
3765 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 3766 | |
7b4aedb9 JB |
3767 | if (part == 1) |
3768 | posn = Qmode_line; | |
3769 | else if (part == 2) | |
3770 | posn = Qvertical_line; | |
3771 | else | |
18cd2eeb KH |
3772 | XSETINT (posn, |
3773 | buffer_posn_from_coords (XWINDOW (window), | |
3774 | column, row)); | |
7b4aedb9 JB |
3775 | } |
3776 | ||
5ec75a55 RS |
3777 | position |
3778 | = Fcons (window, | |
3779 | Fcons (posn, | |
3780 | Fcons (Fcons (event->x, event->y), | |
3781 | Fcons (make_number (event->timestamp), | |
3782 | Qnil)))); | |
284f4730 | 3783 | } |
7b4aedb9 | 3784 | else |
88cb0656 | 3785 | { |
9e20143a RS |
3786 | Lisp_Object window; |
3787 | Lisp_Object portion_whole; | |
3788 | Lisp_Object part; | |
3789 | ||
3790 | window = event->frame_or_window; | |
3791 | portion_whole = Fcons (event->x, event->y); | |
3792 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 | 3793 | |
db08707d RS |
3794 | position |
3795 | = Fcons (window, | |
3796 | Fcons (Qvertical_scroll_bar, | |
3797 | Fcons (portion_whole, | |
3798 | Fcons (make_number (event->timestamp), | |
3799 | Fcons (part, Qnil))))); | |
88cb0656 JB |
3800 | } |
3801 | ||
dbc4e1c1 JB |
3802 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
3803 | ||
3804 | start_pos = *start_pos_ptr; | |
3805 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3806 | |
559f9d04 RS |
3807 | is_double = (button == last_mouse_button |
3808 | && XINT (event->x) == last_mouse_x | |
3809 | && XINT (event->y) == last_mouse_y | |
3810 | && button_down_time != 0 | |
3811 | && (EQ (Vdouble_click_time, Qt) | |
3812 | || (INTEGERP (Vdouble_click_time) | |
3813 | && ((int)(event->timestamp - button_down_time) | |
3814 | < XINT (Vdouble_click_time))))); | |
3815 | last_mouse_button = button; | |
3816 | last_mouse_x = XINT (event->x); | |
3817 | last_mouse_y = XINT (event->y); | |
3818 | ||
7b4aedb9 JB |
3819 | /* If this is a button press, squirrel away the location, so |
3820 | we can decide later whether it was a click or a drag. */ | |
3821 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3822 | { |
3823 | if (is_double) | |
3824 | { | |
3825 | double_click_count++; | |
3826 | event->modifiers |= ((double_click_count > 2) | |
3827 | ? triple_modifier | |
3828 | : double_modifier); | |
3829 | } | |
3830 | else | |
3831 | double_click_count = 1; | |
3832 | button_down_time = event->timestamp; | |
3833 | *start_pos_ptr = Fcopy_alist (position); | |
3834 | } | |
7b4aedb9 | 3835 | |
88cb0656 | 3836 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3837 | see if this was a click or a drag. */ |
88cb0656 JB |
3838 | else if (event->modifiers & up_modifier) |
3839 | { | |
48e416d4 RS |
3840 | /* If we did not see a down before this up, |
3841 | ignore the up. Probably this happened because | |
3842 | the down event chose a menu item. | |
3843 | It would be an annoyance to treat the release | |
3844 | of the button that chose the menu item | |
3845 | as a separate event. */ | |
3846 | ||
8c18cbfb | 3847 | if (!CONSP (start_pos)) |
48e416d4 RS |
3848 | return Qnil; |
3849 | ||
88cb0656 | 3850 | event->modifiers &= ~up_modifier; |
48e416d4 | 3851 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3852 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3853 | event->modifiers |= click_modifier; |
3854 | else | |
48e416d4 | 3855 | #endif |
dbc4e1c1 JB |
3856 | { |
3857 | /* The third element of every position should be the (x,y) | |
3858 | pair. */ | |
9b8eb840 | 3859 | Lisp_Object down; |
dbc4e1c1 | 3860 | |
9b8eb840 | 3861 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3862 | if (EQ (event->x, XCONS (down)->car) |
3863 | && EQ (event->y, XCONS (down)->cdr)) | |
3864 | { | |
bc536d84 | 3865 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3866 | } |
3867 | else | |
3868 | { | |
559f9d04 | 3869 | button_down_time = 0; |
fbcd35bd JB |
3870 | event->modifiers |= drag_modifier; |
3871 | } | |
bc536d84 RS |
3872 | /* Don't check is_double; treat this as multiple |
3873 | if the down-event was multiple. */ | |
3874 | if (double_click_count > 1) | |
3875 | event->modifiers |= ((double_click_count > 2) | |
3876 | ? triple_modifier | |
3877 | : double_modifier); | |
dbc4e1c1 | 3878 | } |
88cb0656 JB |
3879 | } |
3880 | else | |
3881 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3882 | the up_modifier set. */ |
88cb0656 JB |
3883 | abort (); |
3884 | ||
88cb0656 | 3885 | { |
7b4aedb9 | 3886 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3887 | Lisp_Object head; |
3888 | ||
3889 | head = modify_event_symbol (button, | |
3890 | event->modifiers, | |
3891 | Qmouse_click, Qnil, | |
3892 | lispy_mouse_names, &mouse_syms, | |
3893 | (sizeof (lispy_mouse_names) | |
3894 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3895 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3896 | return Fcons (head, |
3897 | Fcons (start_pos, | |
3898 | Fcons (position, | |
3899 | Qnil))); | |
fbcd35bd JB |
3900 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3901 | return Fcons (head, | |
3902 | Fcons (position, | |
3903 | Fcons (make_number (double_click_count), | |
3904 | Qnil))); | |
88cb0656 JB |
3905 | else |
3906 | return Fcons (head, | |
7b4aedb9 | 3907 | Fcons (position, |
88cb0656 JB |
3908 | Qnil)); |
3909 | } | |
284f4730 | 3910 | } |
db08707d RS |
3911 | |
3912 | #ifdef WINDOWSNT | |
3913 | case win32_scroll_bar_click: | |
3914 | { | |
3915 | int button = event->code; | |
3916 | int is_double; | |
3917 | Lisp_Object position; | |
3918 | Lisp_Object *start_pos_ptr; | |
3919 | Lisp_Object start_pos; | |
3920 | ||
3921 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) | |
3922 | abort (); | |
3923 | ||
3924 | { | |
3925 | Lisp_Object window; | |
3926 | Lisp_Object portion_whole; | |
3927 | Lisp_Object part; | |
3928 | ||
3929 | window = event->frame_or_window; | |
3930 | portion_whole = Fcons (event->x, event->y); | |
3931 | part = *scroll_bar_parts[(int) event->part]; | |
3932 | ||
3933 | position = | |
3934 | Fcons (window, | |
3935 | Fcons (Qvertical_scroll_bar, | |
3936 | Fcons (portion_whole, | |
3937 | Fcons (make_number (event->timestamp), | |
3938 | Fcons (part, Qnil))))); | |
3939 | } | |
3940 | ||
3941 | /* Always treat Win32 scroll bar events as clicks. */ | |
3942 | event->modifiers |= click_modifier; | |
3943 | ||
3944 | { | |
3945 | /* Get the symbol we should use for the mouse click. */ | |
3946 | Lisp_Object head; | |
3947 | ||
3948 | head = modify_event_symbol (button, | |
3949 | event->modifiers, | |
3950 | Qmouse_click, Qnil, | |
3951 | lispy_mouse_names, &mouse_syms, | |
3952 | (sizeof (lispy_mouse_names) | |
3953 | / sizeof (lispy_mouse_names[0]))); | |
3954 | return Fcons (head, | |
3955 | Fcons (position, | |
3956 | Qnil)); | |
3957 | } | |
3958 | } | |
3959 | #endif | |
3960 | ||
514354e9 | 3961 | #endif /* HAVE_MOUSE */ |
284f4730 | 3962 | |
e98a93eb | 3963 | #if defined (USE_X_TOOLKIT) || defined (HAVE_NTGUI) |
2470a66f KH |
3964 | case menu_bar_event: |
3965 | /* The event value is in the cdr of the frame_or_window slot. */ | |
3966 | if (!CONSP (event->frame_or_window)) | |
3967 | abort (); | |
3968 | return XCONS (event->frame_or_window)->cdr; | |
3969 | #endif | |
3970 | ||
284f4730 JB |
3971 | /* The 'kind' field of the event is something we don't recognize. */ |
3972 | default: | |
48e416d4 | 3973 | abort (); |
284f4730 JB |
3974 | } |
3975 | } | |
3976 | ||
514354e9 | 3977 | #ifdef HAVE_MOUSE |
6cbff1cb | 3978 | |
284f4730 | 3979 | static Lisp_Object |
7b4aedb9 | 3980 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3981 | FRAME_PTR frame; |
7b4aedb9 | 3982 | Lisp_Object bar_window; |
3c370943 | 3983 | enum scroll_bar_part part; |
284f4730 | 3984 | Lisp_Object x, y; |
e5d77022 | 3985 | unsigned long time; |
284f4730 | 3986 | { |
3c370943 | 3987 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3988 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3989 | { |
9b8eb840 | 3990 | Lisp_Object part_sym; |
4bb994d1 | 3991 | |
9b8eb840 | 3992 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3993 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3994 | (Fcons (Fcons (bar_window, |
3c370943 | 3995 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3996 | Fcons (Fcons (x, y), |
3997 | Fcons (make_number (time), | |
cb5df6ae | 3998 | Fcons (part_sym, |
4bb994d1 JB |
3999 | Qnil))))), |
4000 | Qnil))); | |
4001 | } | |
4002 | ||
4003 | /* Or is it an ordinary mouse movement? */ | |
284f4730 JB |
4004 | else |
4005 | { | |
4bb994d1 | 4006 | int area; |
9e20143a | 4007 | Lisp_Object window; |
4bb994d1 | 4008 | Lisp_Object posn; |
9e20143a RS |
4009 | int column, row; |
4010 | ||
9e20143a | 4011 | if (frame) |
047688cb RS |
4012 | { |
4013 | /* It's in a frame; which window on that frame? */ | |
6c6a9be8 KH |
4014 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, |
4015 | NULL, 1); | |
047688cb RS |
4016 | window = window_from_coordinates (frame, column, row, &area); |
4017 | } | |
9e20143a RS |
4018 | else |
4019 | window = Qnil; | |
4bb994d1 | 4020 | |
8c18cbfb | 4021 | if (WINDOWP (window)) |
4bb994d1 | 4022 | { |
9e20143a RS |
4023 | int pixcolumn, pixrow; |
4024 | column -= XINT (XWINDOW (window)->left); | |
4025 | row -= XINT (XWINDOW (window)->top); | |
4026 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
4027 | XSETINT (x, pixcolumn); | |
4028 | XSETINT (y, pixrow); | |
4bb994d1 JB |
4029 | |
4030 | if (area == 1) | |
4031 | posn = Qmode_line; | |
4032 | else if (area == 2) | |
4033 | posn = Qvertical_line; | |
4034 | else | |
18cd2eeb KH |
4035 | XSETINT (posn, |
4036 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 4037 | } |
e9bf89a0 RS |
4038 | else if (frame != 0) |
4039 | { | |
18cd2eeb | 4040 | XSETFRAME (window, frame); |
e9bf89a0 RS |
4041 | posn = Qnil; |
4042 | } | |
284f4730 | 4043 | else |
4bb994d1 JB |
4044 | { |
4045 | window = Qnil; | |
4046 | posn = Qnil; | |
bb9e9bed KH |
4047 | XSETFASTINT (x, 0); |
4048 | XSETFASTINT (y, 0); | |
4bb994d1 | 4049 | } |
284f4730 | 4050 | |
4bb994d1 JB |
4051 | return Fcons (Qmouse_movement, |
4052 | Fcons (Fcons (window, | |
4053 | Fcons (posn, | |
4054 | Fcons (Fcons (x, y), | |
4055 | Fcons (make_number (time), | |
4056 | Qnil)))), | |
4057 | Qnil)); | |
4058 | } | |
284f4730 JB |
4059 | } |
4060 | ||
514354e9 | 4061 | #endif /* HAVE_MOUSE */ |
6cbff1cb | 4062 | |
cd21b839 JB |
4063 | /* Construct a switch frame event. */ |
4064 | static Lisp_Object | |
4065 | make_lispy_switch_frame (frame) | |
4066 | Lisp_Object frame; | |
4067 | { | |
4068 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
4069 | } | |
0a7f1fc0 JB |
4070 | \f |
4071 | /* Manipulating modifiers. */ | |
284f4730 | 4072 | |
0a7f1fc0 | 4073 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 4074 | |
0a7f1fc0 JB |
4075 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
4076 | SYMBOL's name of the end of the modifiers; the string from this | |
4077 | position is the unmodified symbol name. | |
284f4730 | 4078 | |
0a7f1fc0 | 4079 | This doesn't use any caches. */ |
6da3dd3a | 4080 | |
0a7f1fc0 JB |
4081 | static int |
4082 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 4083 | Lisp_Object symbol; |
0a7f1fc0 | 4084 | int *modifier_end; |
284f4730 JB |
4085 | { |
4086 | struct Lisp_String *name; | |
4087 | int i; | |
4088 | int modifiers; | |
284f4730 JB |
4089 | |
4090 | CHECK_SYMBOL (symbol, 1); | |
df0f2ba1 | 4091 | |
284f4730 JB |
4092 | modifiers = 0; |
4093 | name = XSYMBOL (symbol)->name; | |
4094 | ||
0a7f1fc0 | 4095 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
4096 | { |
4097 | int this_mod_end = 0; | |
4098 | int this_mod = 0; | |
284f4730 | 4099 | |
6da3dd3a RS |
4100 | /* See if the name continues with a modifier word. |
4101 | Check that the word appears, but don't check what follows it. | |
4102 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 4103 | |
6da3dd3a RS |
4104 | switch (name->data[i]) |
4105 | { | |
4106 | #define SINGLE_LETTER_MOD(BIT) \ | |
4107 | (this_mod_end = i + 1, this_mod = BIT) | |
4108 | ||
6da3dd3a RS |
4109 | case 'A': |
4110 | SINGLE_LETTER_MOD (alt_modifier); | |
4111 | break; | |
284f4730 | 4112 | |
6da3dd3a RS |
4113 | case 'C': |
4114 | SINGLE_LETTER_MOD (ctrl_modifier); | |
4115 | break; | |
284f4730 | 4116 | |
6da3dd3a RS |
4117 | case 'H': |
4118 | SINGLE_LETTER_MOD (hyper_modifier); | |
4119 | break; | |
4120 | ||
6da3dd3a RS |
4121 | case 'M': |
4122 | SINGLE_LETTER_MOD (meta_modifier); | |
4123 | break; | |
4124 | ||
6da3dd3a RS |
4125 | case 'S': |
4126 | SINGLE_LETTER_MOD (shift_modifier); | |
4127 | break; | |
4128 | ||
4129 | case 's': | |
6da3dd3a RS |
4130 | SINGLE_LETTER_MOD (super_modifier); |
4131 | break; | |
4132 | ||
0a7f1fc0 | 4133 | #undef SINGLE_LETTER_MOD |
6da3dd3a RS |
4134 | } |
4135 | ||
4136 | /* If we found no modifier, stop looking for them. */ | |
4137 | if (this_mod_end == 0) | |
4138 | break; | |
4139 | ||
4140 | /* Check there is a dash after the modifier, so that it | |
4141 | really is a modifier. */ | |
4142 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
4143 | break; | |
4144 | ||
4145 | /* This modifier is real; look for another. */ | |
4146 | modifiers |= this_mod; | |
4147 | i = this_mod_end + 1; | |
4148 | } | |
284f4730 | 4149 | |
0a7f1fc0 | 4150 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
4151 | if (! (modifiers & (down_modifier | drag_modifier |
4152 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4153 | && i + 7 == name->size |
4bb994d1 | 4154 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 4155 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
4156 | modifiers |= click_modifier; |
4157 | ||
4158 | if (modifier_end) | |
4159 | *modifier_end = i; | |
4160 | ||
4161 | return modifiers; | |
4162 | } | |
4163 | ||
0a7f1fc0 JB |
4164 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
4165 | prepended to the string BASE[0..BASE_LEN-1]. | |
4166 | This doesn't use any caches. */ | |
4167 | static Lisp_Object | |
4168 | apply_modifiers_uncached (modifiers, base, base_len) | |
4169 | int modifiers; | |
4170 | char *base; | |
4171 | int base_len; | |
4172 | { | |
4173 | /* Since BASE could contain nulls, we can't use intern here; we have | |
4174 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
4175 | reference to it. */ | |
4176 | char *new_mods = | |
fbcd35bd | 4177 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 4178 | int mod_len; |
284f4730 | 4179 | |
284f4730 | 4180 | { |
0a7f1fc0 JB |
4181 | char *p = new_mods; |
4182 | ||
4183 | /* Only the event queue may use the `up' modifier; it should always | |
4184 | be turned into a click or drag event before presented to lisp code. */ | |
4185 | if (modifiers & up_modifier) | |
4186 | abort (); | |
4187 | ||
4188 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
4189 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
4190 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
4191 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
4192 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 4193 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
4194 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
4195 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
4196 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
4197 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
4198 | /* The click modifier is denoted by the absence of other modifiers. */ |
4199 | ||
4200 | *p = '\0'; | |
4201 | ||
4202 | mod_len = p - new_mods; | |
4203 | } | |
284f4730 | 4204 | |
0a7f1fc0 | 4205 | { |
9b8eb840 | 4206 | Lisp_Object new_name; |
df0f2ba1 | 4207 | |
9b8eb840 | 4208 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
4209 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
4210 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
4211 | |
4212 | return Fintern (new_name, Qnil); | |
4213 | } | |
4214 | } | |
4215 | ||
4216 | ||
0a7f1fc0 JB |
4217 | static char *modifier_names[] = |
4218 | { | |
fbcd35bd | 4219 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
f335fabe | 4220 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 4221 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 4222 | }; |
80645119 | 4223 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
4224 | |
4225 | static Lisp_Object modifier_symbols; | |
4226 | ||
4227 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
4228 | static Lisp_Object | |
4229 | lispy_modifier_list (modifiers) | |
4230 | int modifiers; | |
4231 | { | |
4232 | Lisp_Object modifier_list; | |
4233 | int i; | |
4234 | ||
4235 | modifier_list = Qnil; | |
80645119 | 4236 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 4237 | if (modifiers & (1<<i)) |
80645119 JB |
4238 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
4239 | modifier_list); | |
0a7f1fc0 JB |
4240 | |
4241 | return modifier_list; | |
4242 | } | |
4243 | ||
4244 | ||
4245 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
4246 | where UNMODIFIED is the unmodified form of SYMBOL, | |
4247 | MASK is the set of modifiers present in SYMBOL's name. | |
4248 | This is similar to parse_modifiers_uncached, but uses the cache in | |
4249 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
4250 | Qevent_symbol_elements property. */ | |
3d31316f | 4251 | |
0a7f1fc0 JB |
4252 | static Lisp_Object |
4253 | parse_modifiers (symbol) | |
4254 | Lisp_Object symbol; | |
4255 | { | |
9b8eb840 | 4256 | Lisp_Object elements; |
0a7f1fc0 | 4257 | |
9b8eb840 | 4258 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
4259 | if (CONSP (elements)) |
4260 | return elements; | |
4261 | else | |
4262 | { | |
4263 | int end; | |
ec0faad2 | 4264 | int modifiers = parse_modifiers_uncached (symbol, &end); |
9b8eb840 | 4265 | Lisp_Object unmodified; |
0a7f1fc0 JB |
4266 | Lisp_Object mask; |
4267 | ||
9b8eb840 KH |
4268 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
4269 | XSYMBOL (symbol)->name->size - end), | |
4270 | Qnil); | |
4271 | ||
ec0faad2 | 4272 | if (modifiers & ~(((EMACS_INT)1 << VALBITS) - 1)) |
734fef94 | 4273 | abort (); |
bb9e9bed | 4274 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
4275 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
4276 | ||
4277 | /* Cache the parsing results on SYMBOL. */ | |
4278 | Fput (symbol, Qevent_symbol_element_mask, | |
4279 | elements); | |
4280 | Fput (symbol, Qevent_symbol_elements, | |
4281 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
4282 | ||
4283 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
4284 | it would be nice to put that in unmodified's cache. | |
4285 | But we can't, since we're not sure that parse_modifiers is | |
4286 | canonical. */ | |
4287 | ||
4288 | return elements; | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
4293 | BASE must be unmodified. | |
4294 | ||
4295 | This is like apply_modifiers_uncached, but uses BASE's | |
4296 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
4297 | Qevent_symbol_elements properties, since it has that info anyway. |
4298 | ||
4299 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
4300 | the modified symbol. */ | |
0a7f1fc0 JB |
4301 | static Lisp_Object |
4302 | apply_modifiers (modifiers, base) | |
4303 | int modifiers; | |
4304 | Lisp_Object base; | |
4305 | { | |
7b4aedb9 | 4306 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 4307 | |
80645119 | 4308 | /* Mask out upper bits. We don't know where this value's been. */ |
ec0faad2 | 4309 | modifiers &= ((EMACS_INT)1 << VALBITS) - 1; |
80645119 | 4310 | |
0a7f1fc0 | 4311 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 4312 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 4313 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 4314 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
4315 | |
4316 | if (CONSP (entry)) | |
7b4aedb9 JB |
4317 | new_symbol = XCONS (entry)->cdr; |
4318 | else | |
4319 | { | |
df0f2ba1 | 4320 | /* We have to create the symbol ourselves. */ |
7b4aedb9 JB |
4321 | new_symbol = apply_modifiers_uncached (modifiers, |
4322 | XSYMBOL (base)->name->data, | |
4323 | XSYMBOL (base)->name->size); | |
4324 | ||
4325 | /* Add the new symbol to the base's cache. */ | |
4326 | entry = Fcons (index, new_symbol); | |
4327 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
4328 | ||
4329 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 4330 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
4331 | Fput (new_symbol, Qevent_symbol_element_mask, |
4332 | Fcons (base, Fcons (index, Qnil))); | |
4333 | Fput (new_symbol, Qevent_symbol_elements, | |
4334 | Fcons (base, lispy_modifier_list (modifiers))); | |
4335 | } | |
0a7f1fc0 | 4336 | |
df0f2ba1 | 4337 | /* Make sure this symbol is of the same kind as BASE. |
7b4aedb9 JB |
4338 | |
4339 | You'd think we could just set this once and for all when we | |
4340 | intern the symbol above, but reorder_modifiers may call us when | |
4341 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
4342 | because it has a Qmodifier_cache property it must have its |
4343 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
4344 | if (NILP (Fget (new_symbol, Qevent_kind))) |
4345 | { | |
9b8eb840 | 4346 | Lisp_Object kind; |
7b4aedb9 | 4347 | |
9b8eb840 | 4348 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
4349 | if (! NILP (kind)) |
4350 | Fput (new_symbol, Qevent_kind, kind); | |
4351 | } | |
4352 | ||
4353 | return new_symbol; | |
0a7f1fc0 JB |
4354 | } |
4355 | ||
4356 | ||
4357 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
4358 | return a symbol with the modifiers placed in the canonical order. | |
4359 | Canonical order is alphabetical, except for down and drag, which | |
4360 | always come last. The 'click' modifier is never written out. | |
4361 | ||
4362 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
4363 | and M-C-foo end up being equivalent in the keymap. */ | |
4364 | ||
4365 | Lisp_Object | |
4366 | reorder_modifiers (symbol) | |
4367 | Lisp_Object symbol; | |
4368 | { | |
4369 | /* It's hopefully okay to write the code this way, since everything | |
4370 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 4371 | Lisp_Object parsed; |
0a7f1fc0 | 4372 | |
9b8eb840 | 4373 | parsed = parse_modifiers (symbol); |
54593ed9 | 4374 | return apply_modifiers ((int) XINT (XCONS (XCONS (parsed)->cdr)->car), |
0a7f1fc0 JB |
4375 | XCONS (parsed)->car); |
4376 | } | |
4377 | ||
4378 | ||
284f4730 JB |
4379 | /* For handling events, we often want to produce a symbol whose name |
4380 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
4381 | to some base, like the name of a function key or mouse button. | |
4382 | modify_event_symbol produces symbols of this sort. | |
4383 | ||
4384 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
4385 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
4386 | in the table. | |
4387 | ||
80e4aa30 RS |
4388 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
4389 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
4390 | ||
284f4730 JB |
4391 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
4392 | persist between calls to modify_event_symbol that it can use to | |
4393 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 4394 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
4395 | |
4396 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
df0f2ba1 | 4397 | |
284f4730 JB |
4398 | MODIFIERS is a set of modifier bits (as given in struct input_events) |
4399 | whose prefixes should be applied to the symbol name. | |
4400 | ||
4401 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
df0f2ba1 | 4402 | the returned symbol. |
88cb0656 JB |
4403 | |
4404 | The symbols we create are supposed to have an | |
eb8c3be9 | 4405 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
4406 | in the symbol's name. */ |
4407 | ||
284f4730 | 4408 | static Lisp_Object |
80e4aa30 RS |
4409 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
4410 | name_table, symbol_table, table_size) | |
284f4730 JB |
4411 | int symbol_num; |
4412 | unsigned modifiers; | |
4413 | Lisp_Object symbol_kind; | |
80e4aa30 | 4414 | Lisp_Object name_alist; |
284f4730 JB |
4415 | char **name_table; |
4416 | Lisp_Object *symbol_table; | |
2c834fb3 | 4417 | unsigned int table_size; |
284f4730 | 4418 | { |
80e4aa30 RS |
4419 | Lisp_Object value; |
4420 | Lisp_Object symbol_int; | |
4421 | ||
2c834fb3 KH |
4422 | /* Get rid of the "vendor-specific" bit here. */ |
4423 | XSETINT (symbol_int, symbol_num & 0xffffff); | |
284f4730 JB |
4424 | |
4425 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 4426 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 4427 | return Qnil; |
284f4730 | 4428 | |
80e4aa30 RS |
4429 | if (CONSP (*symbol_table)) |
4430 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
4431 | ||
0a7f1fc0 | 4432 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 4433 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
4434 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
4435 | we've never used that symbol before. */ | |
80e4aa30 | 4436 | else |
88cb0656 | 4437 | { |
80e4aa30 RS |
4438 | if (! VECTORP (*symbol_table) |
4439 | || XVECTOR (*symbol_table)->size != table_size) | |
4440 | { | |
4441 | Lisp_Object size; | |
0a7f1fc0 | 4442 | |
bb9e9bed | 4443 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
4444 | *symbol_table = Fmake_vector (size, Qnil); |
4445 | } | |
284f4730 | 4446 | |
80e4aa30 RS |
4447 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
4448 | } | |
284f4730 | 4449 | |
0a7f1fc0 | 4450 | /* Have we already used this symbol before? */ |
80e4aa30 | 4451 | if (NILP (value)) |
284f4730 | 4452 | { |
0a7f1fc0 | 4453 | /* No; let's create it. */ |
80e4aa30 | 4454 | if (!NILP (name_alist)) |
b64b4075 | 4455 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
4456 | else if (name_table[symbol_num]) |
4457 | value = intern (name_table[symbol_num]); | |
b64b4075 | 4458 | |
e98a93eb | 4459 | #ifdef HAVE_WINDOW_SYSTEM |
2c834fb3 KH |
4460 | if (NILP (value)) |
4461 | { | |
4462 | char *name = x_get_keysym_name (symbol_num); | |
4463 | if (name) | |
4464 | value = intern (name); | |
4465 | } | |
4466 | #endif | |
4467 | ||
b64b4075 | 4468 | if (NILP (value)) |
d1f50460 RS |
4469 | { |
4470 | char buf[20]; | |
4471 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 4472 | value = intern (buf); |
d1f50460 | 4473 | } |
0a7f1fc0 | 4474 | |
80e4aa30 | 4475 | if (CONSP (*symbol_table)) |
4205cb08 | 4476 | *symbol_table = Fcons (Fcons (symbol_int, value), *symbol_table); |
80e4aa30 RS |
4477 | else |
4478 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
4479 | ||
df0f2ba1 | 4480 | /* Fill in the cache entries for this symbol; this also |
0a7f1fc0 JB |
4481 | builds the Qevent_symbol_elements property, which the user |
4482 | cares about. */ | |
80e4aa30 RS |
4483 | apply_modifiers (modifiers & click_modifier, value); |
4484 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 4485 | } |
88cb0656 | 4486 | |
0a7f1fc0 | 4487 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 4488 | return apply_modifiers (modifiers, value); |
284f4730 | 4489 | } |
6da3dd3a RS |
4490 | \f |
4491 | /* Convert a list that represents an event type, | |
4492 | such as (ctrl meta backspace), into the usual representation of that | |
4493 | event type as a number or a symbol. */ | |
4494 | ||
a1706c30 | 4495 | DEFUN ("event-convert-list", Fevent_convert_list, Sevent_convert_list, 1, 1, 0, |
e57d8fd8 EN |
4496 | "Convert the event description list EVENT-DESC to an event type.\n\ |
4497 | EVENT-DESC should contain one base event type (a character or symbol)\n\ | |
a1706c30 | 4498 | and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\ |
377f24f5 | 4499 | drag, down, double or triple). The base must be last.\n\ |
a1706c30 KH |
4500 | The return value is an event type (a character or symbol) which\n\ |
4501 | has the same base event type and all the specified modifiers.") | |
e57d8fd8 EN |
4502 | (event_desc) |
4503 | Lisp_Object event_desc; | |
6da3dd3a RS |
4504 | { |
4505 | Lisp_Object base; | |
4506 | int modifiers = 0; | |
4507 | Lisp_Object rest; | |
4508 | ||
4509 | base = Qnil; | |
e57d8fd8 | 4510 | rest = event_desc; |
6da3dd3a RS |
4511 | while (CONSP (rest)) |
4512 | { | |
4513 | Lisp_Object elt; | |
4514 | int this = 0; | |
4515 | ||
4516 | elt = XCONS (rest)->car; | |
377f24f5 | 4517 | rest = XCONS (rest)->cdr; |
6da3dd3a | 4518 | |
3d31316f | 4519 | /* Given a symbol, see if it is a modifier name. */ |
377f24f5 | 4520 | if (SYMBOLP (elt) && CONSP (rest)) |
3d31316f | 4521 | this = parse_solitary_modifier (elt); |
6da3dd3a RS |
4522 | |
4523 | if (this != 0) | |
4524 | modifiers |= this; | |
4525 | else if (!NILP (base)) | |
4526 | error ("Two bases given in one event"); | |
4527 | else | |
4528 | base = elt; | |
4529 | ||
6da3dd3a RS |
4530 | } |
4531 | ||
3d31316f RS |
4532 | /* Let the symbol A refer to the character A. */ |
4533 | if (SYMBOLP (base) && XSYMBOL (base)->name->size == 1) | |
4534 | XSETINT (base, XSYMBOL (base)->name->data[0]); | |
4535 | ||
6da3dd3a RS |
4536 | if (INTEGERP (base)) |
4537 | { | |
3d31316f RS |
4538 | /* Turn (shift a) into A. */ |
4539 | if ((modifiers & shift_modifier) != 0 | |
4540 | && (XINT (base) >= 'a' && XINT (base) <= 'z')) | |
4541 | { | |
4542 | XSETINT (base, XINT (base) - ('a' - 'A')); | |
4543 | modifiers &= ~shift_modifier; | |
4544 | } | |
4545 | ||
4546 | /* Turn (control a) into C-a. */ | |
6da3dd3a | 4547 | if (modifiers & ctrl_modifier) |
3d31316f | 4548 | return make_number ((modifiers & ~ctrl_modifier) |
6da3dd3a RS |
4549 | | make_ctrl_char (XINT (base))); |
4550 | else | |
4551 | return make_number (modifiers | XINT (base)); | |
4552 | } | |
4553 | else if (SYMBOLP (base)) | |
4554 | return apply_modifiers (modifiers, base); | |
4555 | else | |
4556 | error ("Invalid base event"); | |
4557 | } | |
4558 | ||
3d31316f RS |
4559 | /* Try to recognize SYMBOL as a modifier name. |
4560 | Return the modifier flag bit, or 0 if not recognized. */ | |
4561 | ||
4562 | static int | |
4563 | parse_solitary_modifier (symbol) | |
4564 | Lisp_Object symbol; | |
4565 | { | |
4566 | struct Lisp_String *name = XSYMBOL (symbol)->name; | |
4567 | ||
4568 | switch (name->data[0]) | |
4569 | { | |
4570 | #define SINGLE_LETTER_MOD(BIT) \ | |
4571 | if (name->size == 1) \ | |
4572 | return BIT; | |
4573 | ||
4574 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
4575 | if (LEN == name->size \ | |
4576 | && ! strncmp (name->data, NAME, LEN)) \ | |
4577 | return BIT; | |
4578 | ||
4579 | case 'A': | |
4580 | SINGLE_LETTER_MOD (alt_modifier); | |
4581 | break; | |
4582 | ||
4583 | case 'a': | |
4584 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
4585 | break; | |
4586 | ||
4587 | case 'C': | |
4588 | SINGLE_LETTER_MOD (ctrl_modifier); | |
4589 | break; | |
4590 | ||
4591 | case 'c': | |
4592 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
4593 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
4594 | break; | |
4595 | ||
4596 | case 'H': | |
4597 | SINGLE_LETTER_MOD (hyper_modifier); | |
4598 | break; | |
4599 | ||
4600 | case 'h': | |
4601 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
4602 | break; | |
4603 | ||
4604 | case 'M': | |
4605 | SINGLE_LETTER_MOD (meta_modifier); | |
4606 | break; | |
4607 | ||
4608 | case 'm': | |
4609 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
4610 | break; | |
4611 | ||
4612 | case 'S': | |
4613 | SINGLE_LETTER_MOD (shift_modifier); | |
4614 | break; | |
4615 | ||
4616 | case 's': | |
4617 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
4618 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
4619 | SINGLE_LETTER_MOD (super_modifier); | |
4620 | break; | |
4621 | ||
4622 | case 'd': | |
4623 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
4624 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
4625 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
4626 | break; | |
4627 | ||
4628 | case 't': | |
4629 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
4630 | break; | |
4631 | ||
4632 | #undef SINGLE_LETTER_MOD | |
4633 | #undef MULTI_LETTER_MOD | |
4634 | } | |
4635 | ||
4636 | return 0; | |
4637 | } | |
4638 | ||
6da3dd3a RS |
4639 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. |
4640 | Such a list is not valid as an event, | |
4641 | but it can be a Lucid-style event type list. */ | |
4642 | ||
4643 | int | |
4644 | lucid_event_type_list_p (object) | |
4645 | Lisp_Object object; | |
4646 | { | |
4647 | Lisp_Object tail; | |
4648 | ||
4649 | if (! CONSP (object)) | |
4650 | return 0; | |
4651 | ||
4652 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
4653 | { | |
4654 | Lisp_Object elt; | |
4655 | elt = XCONS (tail)->car; | |
4656 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
4657 | return 0; | |
4658 | } | |
4659 | ||
4660 | return NILP (tail); | |
4661 | } | |
284f4730 | 4662 | \f |
284f4730 JB |
4663 | /* Store into *addr a value nonzero if terminal input chars are available. |
4664 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
4665 | but works even if FIONREAD does not exist. | |
d9d4c147 KH |
4666 | (In fact, this may actually read some input.) |
4667 | ||
4668 | If DO_TIMERS_NOW is nonzero, actually run timer events that are ripe. */ | |
284f4730 JB |
4669 | |
4670 | static void | |
d9d4c147 | 4671 | get_input_pending (addr, do_timers_now) |
284f4730 | 4672 | int *addr; |
d9d4c147 | 4673 | int do_timers_now; |
284f4730 JB |
4674 | { |
4675 | /* First of all, have we already counted some input? */ | |
d9d4c147 | 4676 | *addr = !NILP (Vquit_flag) || readable_events (do_timers_now); |
284f4730 JB |
4677 | |
4678 | /* If input is being read as it arrives, and we have none, there is none. */ | |
4679 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
4680 | return; | |
4681 | ||
4682 | /* Try to read some input and see how much we get. */ | |
4683 | gobble_input (0); | |
d9d4c147 | 4684 | *addr = !NILP (Vquit_flag) || readable_events (do_timers_now); |
284f4730 JB |
4685 | } |
4686 | ||
81931ba1 | 4687 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
4688 | |
4689 | int | |
4690 | gobble_input (expected) | |
4691 | int expected; | |
4692 | { | |
4693 | #ifndef VMS | |
4694 | #ifdef SIGIO | |
4695 | if (interrupt_input) | |
4696 | { | |
32676c08 | 4697 | SIGMASKTYPE mask; |
4f8aaa74 | 4698 | mask = sigblock (sigmask (SIGIO)); |
284f4730 | 4699 | read_avail_input (expected); |
e065a56e | 4700 | sigsetmask (mask); |
284f4730 JB |
4701 | } |
4702 | else | |
81931ba1 RS |
4703 | #ifdef POLL_FOR_INPUT |
4704 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
4705 | { | |
4706 | SIGMASKTYPE mask; | |
4f8aaa74 | 4707 | mask = sigblock (sigmask (SIGALRM)); |
81931ba1 RS |
4708 | read_avail_input (expected); |
4709 | sigsetmask (mask); | |
4710 | } | |
4711 | else | |
87485d6f | 4712 | #endif |
284f4730 JB |
4713 | #endif |
4714 | read_avail_input (expected); | |
4715 | #endif | |
4716 | } | |
a8015ab5 | 4717 | |
241ceaf7 RS |
4718 | /* Put a buffer_switch_event in the buffer |
4719 | so that read_key_sequence will notice the new current buffer. */ | |
4720 | ||
a8015ab5 KH |
4721 | record_asynch_buffer_change () |
4722 | { | |
4723 | struct input_event event; | |
a30f0615 RS |
4724 | Lisp_Object tem; |
4725 | ||
a8015ab5 KH |
4726 | event.kind = buffer_switch_event; |
4727 | event.frame_or_window = Qnil; | |
241ceaf7 | 4728 | |
f65e6f7d | 4729 | #ifdef subprocesses |
a30f0615 RS |
4730 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
4731 | The purpose of the event is to make read_key_sequence look up the | |
4732 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
4733 | and the event could cause trouble by messing up (input-pending-p). */ | |
4734 | tem = Fwaiting_for_user_input_p (); | |
4735 | if (NILP (tem)) | |
4736 | return; | |
f65e6f7d RS |
4737 | #else |
4738 | /* We never need these events if we have no asynchronous subprocesses. */ | |
4739 | return; | |
4740 | #endif | |
a30f0615 | 4741 | |
241ceaf7 RS |
4742 | /* Make sure no interrupt happens while storing the event. */ |
4743 | #ifdef SIGIO | |
4744 | if (interrupt_input) | |
4745 | { | |
4746 | SIGMASKTYPE mask; | |
4f8aaa74 | 4747 | mask = sigblock (sigmask (SIGIO)); |
241ceaf7 RS |
4748 | kbd_buffer_store_event (&event); |
4749 | sigsetmask (mask); | |
4750 | } | |
4751 | else | |
4752 | #endif | |
4753 | { | |
4754 | stop_polling (); | |
4755 | kbd_buffer_store_event (&event); | |
4756 | start_polling (); | |
4757 | } | |
a8015ab5 | 4758 | } |
284f4730 JB |
4759 | \f |
4760 | #ifndef VMS | |
4761 | ||
4762 | /* Read any terminal input already buffered up by the system | |
4763 | into the kbd_buffer, but do not wait. | |
4764 | ||
4765 | EXPECTED should be nonzero if the caller knows there is some input. | |
4766 | ||
4767 | Except on VMS, all input is read by this function. | |
4768 | If interrupt_input is nonzero, this function MUST be called | |
4769 | only when SIGIO is blocked. | |
4770 | ||
4771 | Returns the number of keyboard chars read, or -1 meaning | |
4772 | this is a bad time to try to read input. */ | |
4773 | ||
4774 | static int | |
4775 | read_avail_input (expected) | |
4776 | int expected; | |
4777 | { | |
4778 | struct input_event buf[KBD_BUFFER_SIZE]; | |
4779 | register int i; | |
4780 | int nread; | |
4781 | ||
4782 | if (read_socket_hook) | |
4783 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
4784 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
4785 | expected, expected); | |
284f4730 JB |
4786 | else |
4787 | { | |
17270835 RS |
4788 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
4789 | the kbd_buffer can really hold. That may prevent loss | |
4790 | of characters on some systems when input is stuffed at us. */ | |
4791 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 4792 | int n_to_read; |
284f4730 | 4793 | |
58788063 | 4794 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
4795 | #ifdef WINDOWSNT |
4796 | return 0; | |
4797 | #else /* not WINDOWSNT */ | |
80e4aa30 | 4798 | #ifdef MSDOS |
58788063 RS |
4799 | n_to_read = dos_keysns (); |
4800 | if (n_to_read == 0) | |
4801 | return 0; | |
c3a2738c | 4802 | #else /* not MSDOS */ |
284f4730 JB |
4803 | #ifdef FIONREAD |
4804 | /* Find out how much input is available. */ | |
437f6112 | 4805 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
4806 | /* Formerly simply reported no input, but that sometimes led to |
4807 | a failure of Emacs to terminate. | |
4808 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
4809 | /* ??? Is it really right to send the signal just to this process |
4810 | rather than to the whole process group? | |
4811 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 4812 | kill (getpid (), SIGHUP); |
58788063 | 4813 | if (n_to_read == 0) |
284f4730 | 4814 | return 0; |
58788063 RS |
4815 | if (n_to_read > sizeof cbuf) |
4816 | n_to_read = sizeof cbuf; | |
284f4730 | 4817 | #else /* no FIONREAD */ |
0c04a67e | 4818 | #if defined (USG) || defined (DGUX) |
284f4730 | 4819 | /* Read some input if available, but don't wait. */ |
58788063 | 4820 | n_to_read = sizeof cbuf; |
437f6112 | 4821 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
4822 | #else |
4823 | you lose; | |
4824 | #endif | |
4825 | #endif | |
80e4aa30 | 4826 | #endif /* not MSDOS */ |
bc536d84 | 4827 | #endif /* not WINDOWSNT */ |
284f4730 | 4828 | |
58788063 RS |
4829 | /* Now read; for one reason or another, this will not block. |
4830 | NREAD is set to the number of chars read. */ | |
9134775b | 4831 | do |
284f4730 | 4832 | { |
80e4aa30 | 4833 | #ifdef MSDOS |
0c04a67e | 4834 | cbuf[0] = dos_keyread (); |
80e4aa30 RS |
4835 | nread = 1; |
4836 | #else | |
437f6112 | 4837 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 4838 | #endif |
762f2b92 | 4839 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
4840 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
4841 | This looks incorrect, but it isn't, because _BSD causes | |
4842 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
4843 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 4844 | if (nread == 0) |
80e4aa30 | 4845 | kill (0, SIGHUP); |
284f4730 | 4846 | #endif |
9134775b | 4847 | } |
791587ee KH |
4848 | while ( |
4849 | /* We used to retry the read if it was interrupted. | |
4850 | But this does the wrong thing when O_NDELAY causes | |
4851 | an EAGAIN error. Does anybody know of a situation | |
4852 | where a retry is actually needed? */ | |
4853 | #if 0 | |
4854 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 4855 | #ifdef EFAULT |
9134775b | 4856 | || errno == EFAULT |
80e4aa30 | 4857 | #endif |
284f4730 | 4858 | #ifdef EBADSLT |
9134775b | 4859 | || errno == EBADSLT |
284f4730 | 4860 | #endif |
791587ee KH |
4861 | ) |
4862 | #else | |
4863 | 0 | |
4864 | #endif | |
4865 | ); | |
284f4730 JB |
4866 | |
4867 | #ifndef FIONREAD | |
02c2c53f | 4868 | #if defined (USG) || defined (DGUX) |
437f6112 | 4869 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 4870 | #endif /* USG or DGUX */ |
284f4730 JB |
4871 | #endif /* no FIONREAD */ |
4872 | for (i = 0; i < nread; i++) | |
4873 | { | |
4874 | buf[i].kind = ascii_keystroke; | |
86e5706b | 4875 | buf[i].modifiers = 0; |
b04904fb | 4876 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 4877 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
4878 | if (meta_key != 2) |
4879 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
4880 | |
4881 | buf[i].code = cbuf[i]; | |
18cd2eeb | 4882 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
284f4730 JB |
4883 | } |
4884 | } | |
4885 | ||
4886 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
4887 | for (i = 0; i < nread; i++) | |
4888 | { | |
4889 | kbd_buffer_store_event (&buf[i]); | |
4890 | /* Don't look at input that follows a C-g too closely. | |
4891 | This reduces lossage due to autorepeat on C-g. */ | |
4892 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 4893 | && buf[i].code == quit_char) |
284f4730 JB |
4894 | break; |
4895 | } | |
4896 | ||
4897 | return nread; | |
4898 | } | |
4899 | #endif /* not VMS */ | |
4900 | \f | |
4901 | #ifdef SIGIO /* for entire page */ | |
4902 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4903 | ||
2ce30ea2 | 4904 | SIGTYPE |
284f4730 JB |
4905 | input_available_signal (signo) |
4906 | int signo; | |
4907 | { | |
4908 | /* Must preserve main program's value of errno. */ | |
4909 | int old_errno = errno; | |
4910 | #ifdef BSD4_1 | |
4911 | extern int select_alarmed; | |
4912 | #endif | |
4913 | ||
5970a8cb | 4914 | #if defined (USG) && !defined (POSIX_SIGNALS) |
284f4730 JB |
4915 | /* USG systems forget handlers when they are used; |
4916 | must reestablish each time */ | |
4917 | signal (signo, input_available_signal); | |
4918 | #endif /* USG */ | |
4919 | ||
4920 | #ifdef BSD4_1 | |
4921 | sigisheld (SIGIO); | |
4922 | #endif | |
4923 | ||
ffd56f97 JB |
4924 | if (input_available_clear_time) |
4925 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4926 | |
4927 | while (1) | |
4928 | { | |
4929 | int nread; | |
4930 | nread = read_avail_input (1); | |
4931 | /* -1 means it's not ok to read the input now. | |
4932 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4933 | 0 means there was no keyboard input available. */ | |
4934 | if (nread <= 0) | |
4935 | break; | |
4936 | ||
4937 | #ifdef BSD4_1 | |
4938 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4939 | #endif | |
4940 | } | |
4941 | ||
4942 | #ifdef BSD4_1 | |
4943 | sigfree (); | |
4944 | #endif | |
4945 | errno = old_errno; | |
4946 | } | |
4947 | #endif /* SIGIO */ | |
ad163903 JB |
4948 | |
4949 | /* Send ourselves a SIGIO. | |
4950 | ||
4951 | This function exists so that the UNBLOCK_INPUT macro in | |
4952 | blockinput.h can have some way to take care of input we put off | |
4953 | dealing with, without assuming that every file which uses | |
4954 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4955 | void | |
4956 | reinvoke_input_signal () | |
4957 | { | |
df0f2ba1 | 4958 | #ifdef SIGIO |
87dd9b9b | 4959 | kill (getpid (), SIGIO); |
ad163903 JB |
4960 | #endif |
4961 | } | |
4962 | ||
4963 | ||
284f4730 JB |
4964 | \f |
4965 | /* Return the prompt-string of a sparse keymap. | |
4966 | This is the first element which is a string. | |
4967 | Return nil if there is none. */ | |
4968 | ||
4969 | Lisp_Object | |
4970 | map_prompt (map) | |
4971 | Lisp_Object map; | |
4972 | { | |
4973 | while (CONSP (map)) | |
4974 | { | |
4975 | register Lisp_Object tem; | |
4976 | tem = Fcar (map); | |
8c18cbfb | 4977 | if (STRINGP (tem)) |
284f4730 JB |
4978 | return tem; |
4979 | map = Fcdr (map); | |
4980 | } | |
4981 | return Qnil; | |
4982 | } | |
4983 | ||
b7c49376 RS |
4984 | static void menu_bar_item (); |
4985 | static void menu_bar_one_keymap (); | |
4986 | ||
4987 | /* These variables hold the vector under construction within | |
4988 | menu_bar_items and its subroutines, and the current index | |
4989 | for storing into that vector. */ | |
4990 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4991 | static int menu_bar_items_index; |
5ec75a55 | 4992 | |
b7c49376 RS |
4993 | /* Return a vector of menu items for a menu bar, appropriate |
4994 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4995 | KEY STRING MAPLIST. |
b7c49376 RS |
4996 | |
4997 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4998 | |
4999 | Lisp_Object | |
b7c49376 RS |
5000 | menu_bar_items (old) |
5001 | Lisp_Object old; | |
5ec75a55 RS |
5002 | { |
5003 | /* The number of keymaps we're scanning right now, and the number of | |
5004 | keymaps we have allocated space for. */ | |
5005 | int nmaps; | |
5006 | ||
5007 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
5008 | in the current keymaps, or nil where it is not a prefix. */ | |
5009 | Lisp_Object *maps; | |
5010 | ||
9f9c0e27 | 5011 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
5012 | |
5013 | Lisp_Object result; | |
5014 | ||
5015 | int mapno; | |
47d319aa | 5016 | Lisp_Object oquit; |
5ec75a55 | 5017 | |
b7c49376 RS |
5018 | int i; |
5019 | ||
5020 | struct gcpro gcpro1; | |
5021 | ||
db60d856 JB |
5022 | /* In order to build the menus, we need to call the keymap |
5023 | accessors. They all call QUIT. But this function is called | |
5024 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
5025 | quitting while building the menus. |
5026 | We do this instead of specbind because (1) errors will clear it anyway | |
5027 | and (2) this avoids risk of specpdl overflow. */ | |
5028 | oquit = Vinhibit_quit; | |
df0f2ba1 | 5029 | Vinhibit_quit = Qt; |
db60d856 | 5030 | |
b7c49376 RS |
5031 | if (!NILP (old)) |
5032 | menu_bar_items_vector = old; | |
5033 | else | |
5034 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
5035 | menu_bar_items_index = 0; | |
5036 | ||
5037 | GCPRO1 (menu_bar_items_vector); | |
5038 | ||
5ec75a55 RS |
5039 | /* Build our list of keymaps. |
5040 | If we recognize a function key and replace its escape sequence in | |
5041 | keybuf with its symbol, or if the sequence starts with a mouse | |
5042 | click and we need to switch buffers, we jump back here to rebuild | |
5043 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5044 | { |
5ec75a55 RS |
5045 | Lisp_Object *tmaps; |
5046 | ||
217258d5 | 5047 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ |
d0a49716 | 5048 | if (!NILP (Voverriding_local_map_menu_flag)) |
9dd3131c | 5049 | { |
217258d5 KH |
5050 | /* Yes, use them (if non-nil) as well as the global map. */ |
5051 | maps = (Lisp_Object *) alloca (3 * sizeof (maps[0])); | |
5052 | nmaps = 0; | |
5053 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
5054 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
5055 | if (!NILP (Voverriding_local_map)) | |
5056 | maps[nmaps++] = Voverriding_local_map; | |
9dd3131c RS |
5057 | } |
5058 | else | |
5059 | { | |
d0a49716 | 5060 | /* No, so use major and minor mode keymaps. */ |
217258d5 KH |
5061 | nmaps = current_minor_maps (NULL, &tmaps); |
5062 | maps = (Lisp_Object *) alloca ((nmaps + 2) * sizeof (maps[0])); | |
5063 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
5ec75a55 | 5064 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 5065 | maps[nmaps++] = get_local_map (PT, current_buffer); |
5ec75a55 | 5066 | #else |
217258d5 | 5067 | maps[nmaps++] = current_buffer->keymap; |
5ec75a55 | 5068 | #endif |
9dd3131c | 5069 | } |
217258d5 | 5070 | maps[nmaps++] = current_global_map; |
5ec75a55 RS |
5071 | } |
5072 | ||
5073 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
5074 | ||
5075 | result = Qnil; | |
5076 | ||
e58aa385 | 5077 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
5078 | { |
5079 | if (! NILP (maps[mapno])) | |
e74fbc70 | 5080 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
5081 | else |
5082 | def = Qnil; | |
5083 | ||
5084 | tem = Fkeymapp (def); | |
5085 | if (!NILP (tem)) | |
b7c49376 | 5086 | menu_bar_one_keymap (def); |
5ec75a55 RS |
5087 | } |
5088 | ||
b7c49376 RS |
5089 | /* Move to the end those items that should be at the end. */ |
5090 | ||
9f9c0e27 RS |
5091 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
5092 | { | |
b7c49376 RS |
5093 | int i; |
5094 | int end = menu_bar_items_index; | |
5095 | ||
35b3402f | 5096 | for (i = 0; i < end; i += 4) |
b7c49376 RS |
5097 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) |
5098 | { | |
35b3402f | 5099 | Lisp_Object tem0, tem1, tem2, tem3; |
0301268e RS |
5100 | /* Move the item at index I to the end, |
5101 | shifting all the others forward. */ | |
5102 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
5103 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
5104 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
35b3402f RS |
5105 | tem3 = XVECTOR (menu_bar_items_vector)->contents[i + 3]; |
5106 | if (end > i + 4) | |
5107 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 4], | |
0301268e | 5108 | &XVECTOR (menu_bar_items_vector)->contents[i], |
35b3402f RS |
5109 | (end - i - 4) * sizeof (Lisp_Object)); |
5110 | XVECTOR (menu_bar_items_vector)->contents[end - 4] = tem0; | |
5111 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem1; | |
5112 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem2; | |
5113 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem3; | |
0301268e | 5114 | break; |
b7c49376 RS |
5115 | } |
5116 | } | |
9f9c0e27 | 5117 | |
0c9071cd | 5118 | /* Add nil, nil, nil, nil at the end. */ |
b7c49376 | 5119 | i = menu_bar_items_index; |
35b3402f | 5120 | if (i + 4 > XVECTOR (menu_bar_items_vector)->size) |
b7c49376 RS |
5121 | { |
5122 | Lisp_Object tem; | |
5123 | int newsize = 2 * i; | |
5124 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
5125 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
5126 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
5127 | menu_bar_items_vector = tem; | |
9f9c0e27 | 5128 | } |
b7c49376 RS |
5129 | /* Add this item. */ |
5130 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
5131 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
5132 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
35b3402f | 5133 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; |
b7c49376 | 5134 | menu_bar_items_index = i; |
a73c5e29 | 5135 | |
47d319aa | 5136 | Vinhibit_quit = oquit; |
b7c49376 RS |
5137 | UNGCPRO; |
5138 | return menu_bar_items_vector; | |
5ec75a55 RS |
5139 | } |
5140 | \f | |
5141 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 5142 | in menu_bar_items_vector. */ |
5ec75a55 | 5143 | |
b7c49376 RS |
5144 | static void |
5145 | menu_bar_one_keymap (keymap) | |
5146 | Lisp_Object keymap; | |
5ec75a55 RS |
5147 | { |
5148 | Lisp_Object tail, item, key, binding, item_string, table; | |
5149 | ||
5150 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 5151 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
5152 | { |
5153 | item = XCONS (tail)->car; | |
8c18cbfb | 5154 | if (CONSP (item)) |
5ec75a55 RS |
5155 | { |
5156 | key = XCONS (item)->car; | |
5157 | binding = XCONS (item)->cdr; | |
8c18cbfb | 5158 | if (CONSP (binding)) |
5ec75a55 RS |
5159 | { |
5160 | item_string = XCONS (binding)->car; | |
8c18cbfb | 5161 | if (STRINGP (item_string)) |
b7c49376 | 5162 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 5163 | } |
e58aa385 | 5164 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 5165 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 5166 | } |
8c18cbfb | 5167 | else if (VECTORP (item)) |
5ec75a55 RS |
5168 | { |
5169 | /* Loop over the char values represented in the vector. */ | |
5170 | int len = XVECTOR (item)->size; | |
5171 | int c; | |
5172 | for (c = 0; c < len; c++) | |
5173 | { | |
5174 | Lisp_Object character; | |
bb9e9bed | 5175 | XSETFASTINT (character, c); |
5ec75a55 | 5176 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 5177 | if (CONSP (binding)) |
5ec75a55 RS |
5178 | { |
5179 | item_string = XCONS (binding)->car; | |
8c18cbfb | 5180 | if (STRINGP (item_string)) |
b7c49376 | 5181 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 5182 | } |
e58aa385 | 5183 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 5184 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
5185 | } |
5186 | } | |
5187 | } | |
5ec75a55 RS |
5188 | } |
5189 | ||
047a8ea7 RS |
5190 | /* This is used as the handler when calling internal_condition_case_1. */ |
5191 | ||
5192 | static Lisp_Object | |
5193 | menu_bar_item_1 (arg) | |
5194 | Lisp_Object arg; | |
5195 | { | |
5196 | return Qnil; | |
5197 | } | |
5198 | ||
f5e09c8b RS |
5199 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
5200 | If there's already an item for KEY, add this DEF to it. */ | |
5201 | ||
b7c49376 RS |
5202 | static void |
5203 | menu_bar_item (key, item_string, def) | |
5204 | Lisp_Object key, item_string, def; | |
5ec75a55 | 5205 | { |
e58aa385 | 5206 | Lisp_Object tem; |
5ec75a55 | 5207 | Lisp_Object enabled; |
b7c49376 | 5208 | int i; |
5ec75a55 | 5209 | |
210df3bf KH |
5210 | /* Skip menu-bar equiv keys data. */ |
5211 | if (CONSP (def) && CONSP (XCONS (def)->car)) | |
5212 | def = XCONS (def)->cdr; | |
5213 | ||
e58aa385 RS |
5214 | if (EQ (def, Qundefined)) |
5215 | { | |
f5e09c8b | 5216 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 5217 | discard any previously made menu bar item. */ |
b7c49376 | 5218 | |
35b3402f | 5219 | for (i = 0; i < menu_bar_items_index; i += 4) |
b7c49376 RS |
5220 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) |
5221 | { | |
35b3402f RS |
5222 | if (menu_bar_items_index > i + 4) |
5223 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 4], | |
b7c49376 | 5224 | &XVECTOR (menu_bar_items_vector)->contents[i], |
35b3402f RS |
5225 | (menu_bar_items_index - i - 4) * sizeof (Lisp_Object)); |
5226 | menu_bar_items_index -= 4; | |
b7c49376 RS |
5227 | return; |
5228 | } | |
8aa034e1 RS |
5229 | |
5230 | /* If there's no definition for this key yet, | |
5231 | just ignore `undefined'. */ | |
5232 | return; | |
e58aa385 RS |
5233 | } |
5234 | ||
5ec75a55 RS |
5235 | /* See if this entry is enabled. */ |
5236 | enabled = Qt; | |
5237 | ||
8c18cbfb | 5238 | if (SYMBOLP (def)) |
5ec75a55 RS |
5239 | { |
5240 | /* No property, or nil, means enable. | |
5241 | Otherwise, enable if value is not nil. */ | |
5242 | tem = Fget (def, Qmenu_enable); | |
5243 | if (!NILP (tem)) | |
047a8ea7 RS |
5244 | /* (condition-case nil (eval tem) |
5245 | (error nil)) */ | |
5246 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
5247 | menu_bar_item_1); | |
5ec75a55 RS |
5248 | } |
5249 | ||
b7c49376 RS |
5250 | /* Ignore this item if it's not enabled. */ |
5251 | if (NILP (enabled)) | |
5252 | return; | |
5ec75a55 | 5253 | |
f5e09c8b | 5254 | /* Find any existing item for this KEY. */ |
35b3402f | 5255 | for (i = 0; i < menu_bar_items_index; i += 4) |
b7c49376 RS |
5256 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) |
5257 | break; | |
5258 | ||
f5e09c8b | 5259 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
5260 | if (i == menu_bar_items_index) |
5261 | { | |
5262 | /* If vector is too small, get a bigger one. */ | |
35b3402f | 5263 | if (i + 4 > XVECTOR (menu_bar_items_vector)->size) |
b7c49376 RS |
5264 | { |
5265 | Lisp_Object tem; | |
5266 | int newsize = 2 * i; | |
5267 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
5268 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
5269 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
5270 | menu_bar_items_vector = tem; | |
5271 | } | |
5272 | /* Add this item. */ | |
5273 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
5274 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 5275 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
35b3402f | 5276 | XVECTOR (menu_bar_items_vector)->contents[i++] = make_number (0); |
b7c49376 RS |
5277 | menu_bar_items_index = i; |
5278 | } | |
f5e09c8b RS |
5279 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
5280 | else | |
5281 | { | |
5282 | Lisp_Object old; | |
5283 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
5284 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
5285 | } | |
5ec75a55 RS |
5286 | } |
5287 | \f | |
dcc408a0 RS |
5288 | /* Read a character using menus based on maps in the array MAPS. |
5289 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
5290 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
5291 | |
5292 | PREV_EVENT is the previous input event, or nil if we are reading | |
5293 | the first event of a key sequence. | |
5294 | ||
83d68044 | 5295 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 5296 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 5297 | USED_MOUSE_MENU is null, we don't dereference it. |
284f4730 JB |
5298 | |
5299 | The prompting is done based on the prompt-string of the map | |
df0f2ba1 | 5300 | and the strings associated with various map elements. |
8150596a RS |
5301 | |
5302 | This can be done with X menus or with menus put in the minibuf. | |
5303 | These are done in different ways, depending on how the input will be read. | |
5304 | Menus using X are done after auto-saving in read-char, getting the input | |
5305 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
5306 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 5307 | |
7617111f | 5308 | static Lisp_Object |
8150596a | 5309 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
5310 | int nmaps; |
5311 | Lisp_Object *maps; | |
5312 | Lisp_Object prev_event; | |
5313 | int *used_mouse_menu; | |
284f4730 | 5314 | { |
7d6de002 RS |
5315 | int mapno; |
5316 | register Lisp_Object name; | |
7d6de002 RS |
5317 | Lisp_Object rest, vector; |
5318 | ||
6569cc8d JB |
5319 | if (used_mouse_menu) |
5320 | *used_mouse_menu = 0; | |
284f4730 JB |
5321 | |
5322 | /* Use local over global Menu maps */ | |
5323 | ||
7d6de002 RS |
5324 | if (! menu_prompting) |
5325 | return Qnil; | |
5326 | ||
03361bcc RS |
5327 | /* Optionally disregard all but the global map. */ |
5328 | if (inhibit_local_menu_bar_menus) | |
5329 | { | |
5330 | maps += (nmaps - 1); | |
5331 | nmaps = 1; | |
5332 | } | |
5333 | ||
7d6de002 RS |
5334 | /* Get the menu name from the first map that has one (a prompt string). */ |
5335 | for (mapno = 0; mapno < nmaps; mapno++) | |
5336 | { | |
5337 | name = map_prompt (maps[mapno]); | |
5338 | if (!NILP (name)) | |
5339 | break; | |
5340 | } | |
284f4730 | 5341 | |
7d6de002 | 5342 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 5343 | if (mapno >= nmaps) |
7d6de002 RS |
5344 | return Qnil; |
5345 | ||
1f5b1641 | 5346 | #ifdef HAVE_MENUS |
7d6de002 RS |
5347 | /* If we got to this point via a mouse click, |
5348 | use a real menu for mouse selection. */ | |
5a8d99e0 KH |
5349 | if (EVENT_HAS_PARAMETERS (prev_event) |
5350 | && !EQ (XCONS (prev_event)->car, Qmenu_bar)) | |
7d6de002 RS |
5351 | { |
5352 | /* Display the menu and get the selection. */ | |
5353 | Lisp_Object *realmaps | |
5354 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
5355 | Lisp_Object value; | |
5356 | int nmaps1 = 0; | |
5357 | ||
5358 | /* Use the maps that are not nil. */ | |
5359 | for (mapno = 0; mapno < nmaps; mapno++) | |
5360 | if (!NILP (maps[mapno])) | |
5361 | realmaps[nmaps1++] = maps[mapno]; | |
5362 | ||
5363 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
5364 | if (CONSP (value)) |
5365 | { | |
68f297c5 RS |
5366 | Lisp_Object tem; |
5367 | ||
5368 | /* If we got multiple events, unread all but | |
5369 | the first. | |
5370 | There is no way to prevent those unread events | |
5371 | from showing up later in last_nonmenu_event. | |
5372 | So turn symbol and integer events into lists, | |
5373 | to indicate that they came from a mouse menu, | |
5374 | so that when present in last_nonmenu_event | |
5375 | they won't confuse things. */ | |
5376 | for (tem = XCONS (value)->cdr; !NILP (tem); | |
5377 | tem = XCONS (tem)->cdr) | |
5378 | if (SYMBOLP (XCONS (tem)->car) | |
5379 | || INTEGERP (XCONS (tem)->car)) | |
5380 | XCONS (tem)->car | |
5381 | = Fcons (XCONS (tem)->car, Qnil); | |
5382 | ||
663258f2 JB |
5383 | /* If we got more than one event, put all but the first |
5384 | onto this list to be read later. | |
5385 | Return just the first event now. */ | |
24597608 RS |
5386 | Vunread_command_events |
5387 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
5388 | value = XCONS (value)->car; |
5389 | } | |
1c90c381 | 5390 | else if (NILP (value)) |
dcc408a0 | 5391 | value = Qt; |
6569cc8d JB |
5392 | if (used_mouse_menu) |
5393 | *used_mouse_menu = 1; | |
7d6de002 RS |
5394 | return value; |
5395 | } | |
1f5b1641 | 5396 | #endif /* HAVE_MENUS */ |
8150596a RS |
5397 | return Qnil ; |
5398 | } | |
5399 | ||
68e0de82 RS |
5400 | /* Buffer in use so far for the minibuf prompts for menu keymaps. |
5401 | We make this bigger when necessary, and never free it. */ | |
5402 | static char *read_char_minibuf_menu_text; | |
5403 | /* Size of that buffer. */ | |
5404 | static int read_char_minibuf_menu_width; | |
5405 | ||
8150596a | 5406 | static Lisp_Object |
24597608 | 5407 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
5408 | int commandflag ; |
5409 | int nmaps; | |
5410 | Lisp_Object *maps; | |
5411 | { | |
5412 | int mapno; | |
5413 | register Lisp_Object name; | |
5414 | int nlength; | |
5415 | int width = FRAME_WIDTH (selected_frame) - 4; | |
8150596a | 5416 | int idx = -1; |
9fdbfdf8 | 5417 | int nobindings = 1; |
8150596a | 5418 | Lisp_Object rest, vector; |
68e0de82 | 5419 | char *menu; |
8150596a RS |
5420 | |
5421 | if (! menu_prompting) | |
5422 | return Qnil; | |
5423 | ||
68e0de82 RS |
5424 | /* Make sure we have a big enough buffer for the menu text. */ |
5425 | if (read_char_minibuf_menu_text == 0) | |
5426 | { | |
5427 | read_char_minibuf_menu_width = width + 4; | |
5428 | read_char_minibuf_menu_text = (char *) xmalloc (width + 4); | |
5429 | } | |
5430 | else if (width + 4 > read_char_minibuf_menu_width) | |
5431 | { | |
5432 | read_char_minibuf_menu_width = width + 4; | |
5433 | read_char_minibuf_menu_text | |
5434 | = (char *) xrealloc (read_char_minibuf_menu_text, width + 4); | |
5435 | } | |
5436 | menu = read_char_minibuf_menu_text; | |
5437 | ||
8150596a RS |
5438 | /* Get the menu name from the first map that has one (a prompt string). */ |
5439 | for (mapno = 0; mapno < nmaps; mapno++) | |
5440 | { | |
5441 | name = map_prompt (maps[mapno]); | |
5442 | if (!NILP (name)) | |
5443 | break; | |
5444 | } | |
5445 | ||
5446 | /* If we don't have any menus, just read a character normally. */ | |
5447 | if (mapno >= nmaps) | |
5448 | return Qnil; | |
284f4730 JB |
5449 | |
5450 | /* Prompt string always starts with map's prompt, and a space. */ | |
5451 | strcpy (menu, XSTRING (name)->data); | |
5452 | nlength = XSTRING (name)->size; | |
7d6de002 | 5453 | menu[nlength++] = ':'; |
284f4730 JB |
5454 | menu[nlength++] = ' '; |
5455 | menu[nlength] = 0; | |
5456 | ||
7d6de002 RS |
5457 | /* Start prompting at start of first map. */ |
5458 | mapno = 0; | |
5459 | rest = maps[mapno]; | |
284f4730 JB |
5460 | |
5461 | /* Present the documented bindings, a line at a time. */ | |
5462 | while (1) | |
5463 | { | |
5464 | int notfirst = 0; | |
5465 | int i = nlength; | |
5466 | Lisp_Object obj; | |
5467 | int ch; | |
8066f1a1 | 5468 | Lisp_Object orig_defn_macro; |
284f4730 | 5469 | |
284f4730 | 5470 | /* Loop over elements of map. */ |
7d6de002 | 5471 | while (i < width) |
284f4730 | 5472 | { |
7d6de002 | 5473 | Lisp_Object s, elt; |
284f4730 | 5474 | |
7d6de002 RS |
5475 | /* If reached end of map, start at beginning of next map. */ |
5476 | if (NILP (rest)) | |
5477 | { | |
5478 | mapno++; | |
5479 | /* At end of last map, wrap around to first map if just starting, | |
5480 | or end this line if already have something on it. */ | |
5481 | if (mapno == nmaps) | |
284f4730 | 5482 | { |
8150596a | 5483 | mapno = 0; |
40932d1a | 5484 | if (notfirst || nobindings) break; |
284f4730 | 5485 | } |
7d6de002 | 5486 | rest = maps[mapno]; |
284f4730 | 5487 | } |
7d6de002 RS |
5488 | |
5489 | /* Look at the next element of the map. */ | |
5490 | if (idx >= 0) | |
5491 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 5492 | else |
7d6de002 RS |
5493 | elt = Fcar_safe (rest); |
5494 | ||
8c18cbfb | 5495 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 5496 | { |
7d6de002 RS |
5497 | /* If we found a dense table in the keymap, |
5498 | advanced past it, but start scanning its contents. */ | |
5499 | rest = Fcdr_safe (rest); | |
5500 | vector = elt; | |
5501 | idx = 0; | |
284f4730 | 5502 | } |
7d6de002 RS |
5503 | else |
5504 | { | |
5505 | /* An ordinary element. */ | |
0a2ea221 KH |
5506 | Lisp_Object event; |
5507 | ||
5508 | if (idx < 0) | |
5509 | { | |
5510 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
5511 | event = Fcar_safe (elt); | |
5512 | } | |
8150596a | 5513 | else |
7d6de002 | 5514 | { |
0a2ea221 KH |
5515 | s = Fcar_safe (elt); /* vector */ |
5516 | XSETINT (event, idx); | |
5517 | } | |
5518 | ||
5519 | /* Ignore the element if it has no prompt string. */ | |
5520 | if (STRINGP (s) && INTEGERP (event)) | |
5521 | { | |
5522 | /* 1 if the char to type matches the string. */ | |
5523 | int char_matches; | |
5524 | Lisp_Object upcased_event, downcased_event; | |
5525 | Lisp_Object desc; | |
5526 | ||
5527 | upcased_event = Fupcase (event); | |
5528 | downcased_event = Fdowncase (event); | |
5529 | char_matches = (XINT (upcased_event) == XSTRING (s)->data[0] | |
5530 | || XINT (downcased_event) == XSTRING (s)->data[0]); | |
5531 | if (! char_matches) | |
5532 | desc = Fsingle_key_description (event); | |
5533 | ||
5534 | /* If we have room for the prompt string, add it to this line. | |
5535 | If this is the first on the line, always add it. */ | |
5536 | if ((XSTRING (s)->size + i + 2 | |
5537 | + (char_matches ? 0 : XSTRING (desc)->size + 3)) | |
5538 | < width | |
5539 | || !notfirst) | |
5540 | { | |
5541 | int thiswidth; | |
5542 | ||
5543 | /* Punctuate between strings. */ | |
5544 | if (notfirst) | |
5545 | { | |
5546 | strcpy (menu + i, ", "); | |
5547 | i += 2; | |
5548 | } | |
5549 | notfirst = 1; | |
5550 | nobindings = 0 ; | |
284f4730 | 5551 | |
0a2ea221 KH |
5552 | /* If the char to type doesn't match the string's |
5553 | first char, explicitly show what char to type. */ | |
5554 | if (! char_matches) | |
5555 | { | |
5556 | /* Add as much of string as fits. */ | |
5557 | thiswidth = XSTRING (desc)->size; | |
5558 | if (thiswidth + i > width) | |
5559 | thiswidth = width - i; | |
5560 | bcopy (XSTRING (desc)->data, menu + i, thiswidth); | |
5561 | i += thiswidth; | |
5562 | strcpy (menu + i, " = "); | |
5563 | i += 3; | |
5564 | } | |
5565 | ||
5566 | /* Add as much of string as fits. */ | |
5567 | thiswidth = XSTRING (s)->size; | |
5568 | if (thiswidth + i > width) | |
5569 | thiswidth = width - i; | |
5570 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
5571 | i += thiswidth; | |
5572 | menu[i] = 0; | |
5573 | } | |
5574 | else | |
7d6de002 | 5575 | { |
0a2ea221 KH |
5576 | /* If this element does not fit, end the line now, |
5577 | and save the element for the next line. */ | |
5578 | strcpy (menu + i, "..."); | |
5579 | break; | |
7d6de002 | 5580 | } |
7d6de002 RS |
5581 | } |
5582 | ||
5583 | /* Move past this element. */ | |
8150596a | 5584 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
5585 | /* Handle reaching end of dense table. */ |
5586 | idx = -1; | |
5587 | if (idx >= 0) | |
5588 | idx++; | |
5589 | else | |
5590 | rest = Fcdr_safe (rest); | |
5591 | } | |
284f4730 JB |
5592 | } |
5593 | ||
5594 | /* Prompt with that and read response. */ | |
5595 | message1 (menu); | |
8150596a | 5596 | |
df0f2ba1 | 5597 | /* Make believe its not a keyboard macro in case the help char |
8150596a RS |
5598 | is pressed. Help characters are not recorded because menu prompting |
5599 | is not used on replay. | |
5600 | */ | |
c5fdd383 KH |
5601 | orig_defn_macro = current_kboard->defining_kbd_macro; |
5602 | current_kboard->defining_kbd_macro = Qnil; | |
3cb81011 KH |
5603 | do |
5604 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 5605 | while (BUFFERP (obj)); |
c5fdd383 | 5606 | current_kboard->defining_kbd_macro = orig_defn_macro; |
284f4730 | 5607 | |
8c18cbfb | 5608 | if (!INTEGERP (obj)) |
284f4730 JB |
5609 | return obj; |
5610 | else | |
5611 | ch = XINT (obj); | |
5612 | ||
f4255cd1 | 5613 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 5614 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 5615 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 5616 | { |
c5fdd383 | 5617 | if (!NILP (current_kboard->defining_kbd_macro)) |
8066f1a1 | 5618 | store_kbd_macro_char (obj); |
8150596a RS |
5619 | return obj; |
5620 | } | |
5621 | /* Help char - go round again */ | |
284f4730 JB |
5622 | } |
5623 | } | |
284f4730 JB |
5624 | \f |
5625 | /* Reading key sequences. */ | |
5626 | ||
5627 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
5628 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
5629 | keymap, or nil otherwise. Return the index of the first keymap in | |
5630 | which KEY has any binding, or NMAPS if no map has a binding. | |
5631 | ||
5632 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
5633 | followed by the corresponding non-meta character. Keymaps in | |
5634 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
5635 | NEXT. | |
5636 | ||
88cb0656 JB |
5637 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
5638 | unmodified. | |
5639 | ||
569871d2 | 5640 | NEXT may be the same array as CURRENT. */ |
284f4730 JB |
5641 | |
5642 | static int | |
4e50f26a | 5643 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
5644 | Lisp_Object key; |
5645 | Lisp_Object *current, *defs, *next; | |
5646 | int nmaps; | |
5647 | { | |
5648 | int i, first_binding; | |
569871d2 | 5649 | int did_meta = 0; |
284f4730 JB |
5650 | |
5651 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
569871d2 RS |
5652 | followed by the corresponding non-meta character. |
5653 | Put the results into DEFS, since we are going to alter that anyway. | |
5654 | Do not alter CURRENT or NEXT. */ | |
8c18cbfb | 5655 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
5656 | { |
5657 | for (i = 0; i < nmaps; i++) | |
5658 | if (! NILP (current[i])) | |
5659 | { | |
569871d2 RS |
5660 | Lisp_Object def; |
5661 | def = get_keyelt (access_keymap (current[i], | |
5662 | meta_prefix_char, 1, 0)); | |
284f4730 JB |
5663 | |
5664 | /* Note that since we pass the resulting bindings through | |
5665 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
5666 | disappear. */ | |
569871d2 | 5667 | defs[i] = get_keymap_1 (def, 0, 1); |
284f4730 JB |
5668 | } |
5669 | else | |
569871d2 | 5670 | defs[i] = Qnil; |
284f4730 | 5671 | |
569871d2 | 5672 | did_meta = 1; |
18cd2eeb | 5673 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
5674 | } |
5675 | ||
5676 | first_binding = nmaps; | |
5677 | for (i = nmaps - 1; i >= 0; i--) | |
5678 | { | |
5679 | if (! NILP (current[i])) | |
5680 | { | |
569871d2 RS |
5681 | Lisp_Object map; |
5682 | if (did_meta) | |
5683 | map = defs[i]; | |
5684 | else | |
5685 | map = current[i]; | |
5686 | ||
5687 | defs[i] = get_keyelt (access_keymap (map, key, 1, 0)); | |
284f4730 JB |
5688 | if (! NILP (defs[i])) |
5689 | first_binding = i; | |
5690 | } | |
5691 | else | |
5692 | defs[i] = Qnil; | |
5693 | } | |
5694 | ||
284f4730 | 5695 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
5696 | if (first_binding < nmaps) |
5697 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 5698 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
5699 | |
5700 | return first_binding; | |
5701 | } | |
5702 | ||
df0f2ba1 | 5703 | /* Read a sequence of keys that ends with a non prefix character, |
f4255cd1 JB |
5704 | storing it in KEYBUF, a buffer of size BUFSIZE. |
5705 | Prompt with PROMPT. | |
284f4730 | 5706 | Return the length of the key sequence stored. |
dcc408a0 | 5707 | Return -1 if the user rejected a command menu. |
284f4730 | 5708 | |
f4255cd1 JB |
5709 | Echo starting immediately unless `prompt' is 0. |
5710 | ||
5711 | Where a key sequence ends depends on the currently active keymaps. | |
5712 | These include any minor mode keymaps active in the current buffer, | |
5713 | the current buffer's local map, and the global map. | |
5714 | ||
5715 | If a key sequence has no other bindings, we check Vfunction_key_map | |
5716 | to see if some trailing subsequence might be the beginning of a | |
5717 | function key's sequence. If so, we try to read the whole function | |
5718 | key, and substitute its symbolic name into the key sequence. | |
5719 | ||
fbcd35bd JB |
5720 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
5721 | `double-' events into similar click events, if that would make them | |
5722 | bound. We try to turn `triple-' events first into `double-' events, | |
5723 | then into clicks. | |
f4255cd1 JB |
5724 | |
5725 | If we get a mouse click in a mode line, vertical divider, or other | |
5726 | non-text area, we treat the click as if it were prefixed by the | |
5727 | symbol denoting that area - `mode-line', `vertical-line', or | |
5728 | whatever. | |
5729 | ||
5730 | If the sequence starts with a mouse click, we read the key sequence | |
5731 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 5732 | |
f4255cd1 JB |
5733 | If the user switches frames in the midst of a key sequence, we put |
5734 | off the switch-frame event until later; the next call to | |
5735 | read_char will return it. */ | |
48e416d4 | 5736 | |
284f4730 | 5737 | static int |
ce98e608 KH |
5738 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
5739 | can_return_switch_frame) | |
284f4730 JB |
5740 | Lisp_Object *keybuf; |
5741 | int bufsize; | |
84d91fda | 5742 | Lisp_Object prompt; |
309b0fc8 | 5743 | int dont_downcase_last; |
ce98e608 | 5744 | int can_return_switch_frame; |
284f4730 | 5745 | { |
f4255cd1 JB |
5746 | int count = specpdl_ptr - specpdl; |
5747 | ||
284f4730 JB |
5748 | /* How many keys there are in the current key sequence. */ |
5749 | int t; | |
5750 | ||
284f4730 JB |
5751 | /* The length of the echo buffer when we started reading, and |
5752 | the length of this_command_keys when we started reading. */ | |
5753 | int echo_start; | |
f4255cd1 | 5754 | int keys_start; |
284f4730 JB |
5755 | |
5756 | /* The number of keymaps we're scanning right now, and the number of | |
5757 | keymaps we have allocated space for. */ | |
5758 | int nmaps; | |
5759 | int nmaps_allocated = 0; | |
5760 | ||
284f4730 JB |
5761 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
5762 | the current keymaps. */ | |
5763 | Lisp_Object *defs; | |
5764 | ||
f4255cd1 JB |
5765 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
5766 | in the current keymaps, or nil where it is not a prefix. */ | |
5767 | Lisp_Object *submaps; | |
5768 | ||
e0dff5f6 RS |
5769 | /* The local map to start out with at start of key sequence. */ |
5770 | Lisp_Object orig_local_map; | |
5771 | ||
5772 | /* 1 if we have already considered switching to the local-map property | |
5773 | of the place where a mouse click occurred. */ | |
5774 | int localized_local_map = 0; | |
5775 | ||
f4255cd1 JB |
5776 | /* The index in defs[] of the first keymap that has a binding for |
5777 | this key sequence. In other words, the lowest i such that | |
5778 | defs[i] is non-nil. */ | |
284f4730 JB |
5779 | int first_binding; |
5780 | ||
f4255cd1 | 5781 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
5782 | input key. |
5783 | ||
5784 | We use this to recover after recognizing a function key. Once we | |
5785 | realize that a suffix of the current key sequence is actually a | |
5786 | function key's escape sequence, we replace the suffix with the | |
5787 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
5788 | contains a new and different key sequence, so the echo area, |
5789 | this_command_keys, and the submaps and defs arrays are wrong. In | |
5790 | this situation, we set mock_input to t, set t to 0, and jump to | |
5791 | restart_sequence; the loop will read keys from keybuf up until | |
5792 | mock_input, thus rebuilding the state; and then it will resume | |
5793 | reading characters from the keyboard. */ | |
284f4730 JB |
5794 | int mock_input = 0; |
5795 | ||
253598e4 | 5796 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
5797 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
5798 | and fkey_map is its binding. | |
253598e4 | 5799 | |
f4255cd1 JB |
5800 | These might be > t, indicating that all function key scanning |
5801 | should hold off until t reaches them. We do this when we've just | |
5802 | recognized a function key, to avoid searching for the function | |
5803 | key's again in Vfunction_key_map. */ | |
284f4730 | 5804 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 5805 | Lisp_Object fkey_map; |
284f4730 | 5806 | |
a612e298 RS |
5807 | /* Likewise, for key_translation_map. */ |
5808 | int keytran_start = 0, keytran_end = 0; | |
5809 | Lisp_Object keytran_map; | |
5810 | ||
cd21b839 JB |
5811 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
5812 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 5813 | Lisp_Object delayed_switch_frame; |
cd21b839 | 5814 | |
51763820 BF |
5815 | /* See the comment below... */ |
5816 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 5817 | Lisp_Object first_event; |
51763820 | 5818 | #endif |
4efda7dd | 5819 | |
309b0fc8 RS |
5820 | Lisp_Object original_uppercase; |
5821 | int original_uppercase_position = -1; | |
5822 | ||
bc536d84 | 5823 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 5824 | int dummyflag = 0; |
bc536d84 | 5825 | |
3b9189f8 RS |
5826 | struct buffer *starting_buffer; |
5827 | ||
e9bf89a0 RS |
5828 | /* Nonzero if we seem to have got the beginning of a binding |
5829 | in function_key_map. */ | |
5830 | int function_key_possible = 0; | |
00a78037 | 5831 | int key_translation_possible = 0; |
e9bf89a0 | 5832 | |
3fe8e9a2 RS |
5833 | /* Save the status of key translation before each step, |
5834 | so that we can restore this after downcasing. */ | |
5835 | Lisp_Object prev_fkey_map; | |
5836 | Lisp_Object prev_fkey_start; | |
5837 | Lisp_Object prev_fkey_end; | |
5838 | ||
5839 | Lisp_Object prev_keytran_map; | |
5840 | Lisp_Object prev_keytran_start; | |
5841 | Lisp_Object prev_keytran_end; | |
5842 | ||
4efda7dd RS |
5843 | int junk; |
5844 | ||
5845 | last_nonmenu_event = Qnil; | |
5846 | ||
5847 | delayed_switch_frame = Qnil; | |
5848 | fkey_map = Vfunction_key_map; | |
a612e298 | 5849 | keytran_map = Vkey_translation_map; |
f4255cd1 | 5850 | |
a612e298 | 5851 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
5852 | if (NILP (Fkeymapp (Vfunction_key_map))) |
5853 | fkey_start = fkey_end = bufsize + 1; | |
5854 | ||
a612e298 RS |
5855 | /* If there is no key-translation-map, turn off scanning. */ |
5856 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
5857 | keytran_start = keytran_end = bufsize + 1; | |
5858 | ||
284f4730 JB |
5859 | if (INTERACTIVE) |
5860 | { | |
84d91fda RS |
5861 | if (!NILP (prompt)) |
5862 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 5863 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
5864 | /* This doesn't put in a dash if the echo buffer is empty, so |
5865 | you don't always see a dash hanging out in the minibuffer. */ | |
5866 | echo_dash (); | |
284f4730 JB |
5867 | } |
5868 | ||
f4255cd1 JB |
5869 | /* Record the initial state of the echo area and this_command_keys; |
5870 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 5871 | if (INTERACTIVE) |
df0f2ba1 | 5872 | echo_start = echo_length (); |
f4255cd1 | 5873 | keys_start = this_command_key_count; |
6321824f | 5874 | this_single_command_key_start = keys_start; |
0a7f1fc0 | 5875 | |
51763820 BF |
5876 | #if defined (GOBBLE_FIRST_EVENT) |
5877 | /* This doesn't quite work, because some of the things that read_char | |
5878 | does cannot safely be bypassed. It seems too risky to try to make | |
df0f2ba1 | 5879 | this work right. */ |
51763820 | 5880 | |
4efda7dd RS |
5881 | /* Read the first char of the sequence specially, before setting |
5882 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 5883 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 5884 | &junk); |
51763820 | 5885 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 5886 | |
e0dff5f6 RS |
5887 | orig_local_map = get_local_map (PT, current_buffer); |
5888 | ||
7b4aedb9 JB |
5889 | /* We jump here when the key sequence has been thoroughly changed, and |
5890 | we need to rescan it starting from the beginning. When we jump here, | |
5891 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 5892 | replay_sequence: |
7b4aedb9 | 5893 | |
3b9189f8 | 5894 | starting_buffer = current_buffer; |
e9bf89a0 | 5895 | function_key_possible = 0; |
00a78037 | 5896 | key_translation_possible = 0; |
3b9189f8 | 5897 | |
f4255cd1 | 5898 | /* Build our list of keymaps. |
07d2b8de JB |
5899 | If we recognize a function key and replace its escape sequence in |
5900 | keybuf with its symbol, or if the sequence starts with a mouse | |
5901 | click and we need to switch buffers, we jump back here to rebuild | |
5902 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5903 | { |
284f4730 JB |
5904 | Lisp_Object *maps; |
5905 | ||
217258d5 KH |
5906 | if (!NILP (current_kboard->Voverriding_terminal_local_map) |
5907 | || !NILP (Voverriding_local_map)) | |
284f4730 | 5908 | { |
217258d5 | 5909 | if (3 > nmaps_allocated) |
9dd3131c | 5910 | { |
217258d5 KH |
5911 | submaps = (Lisp_Object *) alloca (3 * sizeof (submaps[0])); |
5912 | defs = (Lisp_Object *) alloca (3 * sizeof (defs[0])); | |
5913 | nmaps_allocated = 3; | |
9dd3131c | 5914 | } |
217258d5 KH |
5915 | nmaps = 0; |
5916 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
5917 | submaps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
5918 | if (!NILP (Voverriding_local_map)) | |
5919 | submaps[nmaps++] = Voverriding_local_map; | |
284f4730 | 5920 | } |
9dd3131c RS |
5921 | else |
5922 | { | |
217258d5 KH |
5923 | nmaps = current_minor_maps (0, &maps); |
5924 | if (nmaps + 2 > nmaps_allocated) | |
9dd3131c | 5925 | { |
217258d5 KH |
5926 | submaps = (Lisp_Object *) alloca ((nmaps+2) * sizeof (submaps[0])); |
5927 | defs = (Lisp_Object *) alloca ((nmaps+2) * sizeof (defs[0])); | |
5928 | nmaps_allocated = nmaps + 2; | |
9dd3131c | 5929 | } |
217258d5 | 5930 | bcopy (maps, submaps, nmaps * sizeof (submaps[0])); |
497ba7a1 | 5931 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 5932 | submaps[nmaps++] = orig_local_map; |
497ba7a1 | 5933 | #else |
217258d5 | 5934 | submaps[nmaps++] = current_buffer->keymap; |
497ba7a1 | 5935 | #endif |
9dd3131c | 5936 | } |
217258d5 | 5937 | submaps[nmaps++] = current_global_map; |
284f4730 JB |
5938 | } |
5939 | ||
5940 | /* Find an accurate initial value for first_binding. */ | |
5941 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 5942 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
5943 | break; |
5944 | ||
3b9189f8 | 5945 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
5946 | t = 0; |
5947 | ||
5948 | /* These are no-ops the first time through, but if we restart, they | |
5949 | revert the echo area and this_command_keys to their original state. */ | |
5950 | this_command_key_count = keys_start; | |
df0f2ba1 | 5951 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
5952 | echo_truncate (echo_start); |
5953 | ||
cca310da JB |
5954 | /* If the best binding for the current key sequence is a keymap, or |
5955 | we may be looking at a function key's escape sequence, keep on | |
5956 | reading. */ | |
253598e4 | 5957 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
5958 | || (first_binding >= nmaps |
5959 | && fkey_start < t | |
5960 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 5961 | && mock_input <= fkey_start) |
0d882d52 KH |
5962 | || (first_binding >= nmaps |
5963 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
5964 | /* Don't return in the middle of a possible function key sequence, |
5965 | if the only bindings we found were via case conversion. | |
5966 | Thus, if ESC O a has a function-key-map translation | |
5967 | and ESC o has a binding, don't return after ESC O, | |
5968 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 5969 | ) |
284f4730 JB |
5970 | { |
5971 | Lisp_Object key; | |
7d6de002 | 5972 | int used_mouse_menu = 0; |
284f4730 | 5973 | |
7b4aedb9 JB |
5974 | /* Where the last real key started. If we need to throw away a |
5975 | key that has expanded into more than one element of keybuf | |
5976 | (say, a mouse click on the mode line which is being treated | |
5977 | as [mode-line (mouse-...)], then we backtrack to this point | |
5978 | of keybuf. */ | |
5979 | int last_real_key_start; | |
5980 | ||
0a7f1fc0 JB |
5981 | /* These variables are analogous to echo_start and keys_start; |
5982 | while those allow us to restart the entire key sequence, | |
5983 | echo_local_start and keys_local_start allow us to throw away | |
5984 | just one key. */ | |
f4255cd1 JB |
5985 | int echo_local_start, keys_local_start, local_first_binding; |
5986 | ||
284f4730 | 5987 | if (t >= bufsize) |
3fe8e9a2 | 5988 | error ("Key sequence too long"); |
284f4730 | 5989 | |
f4255cd1 JB |
5990 | if (INTERACTIVE) |
5991 | echo_local_start = echo_length (); | |
5992 | keys_local_start = this_command_key_count; | |
5993 | local_first_binding = first_binding; | |
df0f2ba1 | 5994 | |
f4255cd1 | 5995 | replay_key: |
0a7f1fc0 | 5996 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
5997 | jumped back up to replay_key; in that case, these restore the |
5998 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 5999 | loop. */ |
40932d1a | 6000 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 6001 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
6002 | this_command_key_count = keys_local_start; |
6003 | first_binding = local_first_binding; | |
6004 | ||
7e85b935 RS |
6005 | /* By default, assume each event is "real". */ |
6006 | last_real_key_start = t; | |
6007 | ||
f4255cd1 | 6008 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
6009 | if (t < mock_input) |
6010 | { | |
6011 | key = keybuf[t]; | |
6012 | add_command_key (key); | |
a98ea3f9 RS |
6013 | if (echo_keystrokes) |
6014 | echo_char (key); | |
284f4730 | 6015 | } |
253598e4 JB |
6016 | |
6017 | /* If not, we should actually read a character. */ | |
284f4730 JB |
6018 | else |
6019 | { | |
a6d53864 RS |
6020 | struct buffer *buf = current_buffer; |
6021 | ||
beecf6a1 | 6022 | { |
c5fdd383 KH |
6023 | #ifdef MULTI_KBOARD |
6024 | KBOARD *interrupted_kboard = current_kboard; | |
df0f2ba1 | 6025 | struct frame *interrupted_frame = selected_frame; |
c5fdd383 | 6026 | if (setjmp (wrong_kboard_jmpbuf)) |
beecf6a1 | 6027 | { |
5798cf15 KH |
6028 | if (!NILP (delayed_switch_frame)) |
6029 | { | |
c5fdd383 | 6030 | interrupted_kboard->kbd_queue |
5798cf15 | 6031 | = Fcons (delayed_switch_frame, |
c5fdd383 | 6032 | interrupted_kboard->kbd_queue); |
5798cf15 KH |
6033 | delayed_switch_frame = Qnil; |
6034 | } | |
beecf6a1 | 6035 | while (t > 0) |
c5fdd383 KH |
6036 | interrupted_kboard->kbd_queue |
6037 | = Fcons (keybuf[--t], interrupted_kboard->kbd_queue); | |
5798cf15 KH |
6038 | |
6039 | /* If the side queue is non-empty, ensure it begins with a | |
6040 | switch-frame, so we'll replay it in the right context. */ | |
c5fdd383 KH |
6041 | if (CONSP (interrupted_kboard->kbd_queue) |
6042 | && (key = XCONS (interrupted_kboard->kbd_queue)->car, | |
5798cf15 KH |
6043 | !(EVENT_HAS_PARAMETERS (key) |
6044 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), | |
6045 | Qswitch_frame)))) | |
df0f2ba1 KH |
6046 | { |
6047 | Lisp_Object frame; | |
6048 | XSETFRAME (frame, interrupted_frame); | |
c5fdd383 | 6049 | interrupted_kboard->kbd_queue |
df0f2ba1 | 6050 | = Fcons (make_lispy_switch_frame (frame), |
c5fdd383 | 6051 | interrupted_kboard->kbd_queue); |
df0f2ba1 | 6052 | } |
beecf6a1 | 6053 | mock_input = 0; |
a6e0153c | 6054 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
6055 | goto replay_sequence; |
6056 | } | |
bded54dd | 6057 | #endif |
beecf6a1 KH |
6058 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
6059 | &used_mouse_menu); | |
6060 | } | |
284f4730 | 6061 | |
dcc408a0 RS |
6062 | /* read_char returns t when it shows a menu and the user rejects it. |
6063 | Just return -1. */ | |
6064 | if (EQ (key, Qt)) | |
6065 | return -1; | |
6066 | ||
f4255cd1 | 6067 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
6068 | Emacs 18 handles this by returning immediately with a |
6069 | zero, so that's what we'll do. */ | |
8c18cbfb | 6070 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 6071 | { |
f4255cd1 | 6072 | t = 0; |
bc536d84 RS |
6073 | /* The Microsoft C compiler can't handle the goto that |
6074 | would go here. */ | |
309b0fc8 | 6075 | dummyflag = 1; |
bc536d84 | 6076 | break; |
cd21b839 | 6077 | } |
df0f2ba1 | 6078 | |
3cb81011 KH |
6079 | /* If the current buffer has been changed from under us, the |
6080 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 6081 | if (BUFFERP (key)) |
3cb81011 KH |
6082 | { |
6083 | mock_input = t; | |
a6e0153c | 6084 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
6085 | goto replay_sequence; |
6086 | } | |
6087 | ||
3b9189f8 RS |
6088 | /* If we have a quit that was typed in another frame, and |
6089 | quit_throw_to_read_char switched buffers, | |
6090 | replay to get the right keymap. */ | |
9343ab07 | 6091 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
6092 | { |
6093 | keybuf[t++] = key; | |
6094 | mock_input = t; | |
6095 | Vquit_flag = Qnil; | |
a6e0153c | 6096 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
6097 | goto replay_sequence; |
6098 | } | |
3cb81011 | 6099 | |
284f4730 | 6100 | Vquit_flag = Qnil; |
7e85b935 | 6101 | } |
284f4730 | 6102 | |
df0f2ba1 | 6103 | /* Clicks in non-text areas get prefixed by the symbol |
7e85b935 RS |
6104 | in their CHAR-ADDRESS field. For example, a click on |
6105 | the mode line is prefixed by the symbol `mode-line'. | |
6106 | ||
6107 | Furthermore, key sequences beginning with mouse clicks | |
6108 | are read using the keymaps of the buffer clicked on, not | |
6109 | the current buffer. So we may have to switch the buffer | |
6110 | here. | |
6111 | ||
6112 | When we turn one event into two events, we must make sure | |
6113 | that neither of the two looks like the original--so that, | |
6114 | if we replay the events, they won't be expanded again. | |
6115 | If not for this, such reexpansion could happen either here | |
6116 | or when user programs play with this-command-keys. */ | |
6117 | if (EVENT_HAS_PARAMETERS (key)) | |
6118 | { | |
9b8eb840 | 6119 | Lisp_Object kind; |
cca310da | 6120 | |
9b8eb840 | 6121 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 6122 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 6123 | { |
9b8eb840 | 6124 | Lisp_Object window, posn; |
f4255cd1 | 6125 | |
9b8eb840 KH |
6126 | window = POSN_WINDOW (EVENT_START (key)); |
6127 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 6128 | if (CONSP (posn)) |
0a7f1fc0 | 6129 | { |
7e85b935 RS |
6130 | /* We're looking at the second event of a |
6131 | sequence which we expanded before. Set | |
6132 | last_real_key_start appropriately. */ | |
6133 | if (t > 0) | |
6134 | last_real_key_start = t - 1; | |
cd21b839 | 6135 | } |
7e85b935 RS |
6136 | |
6137 | /* Key sequences beginning with mouse clicks are | |
6138 | read using the keymaps in the buffer clicked on, | |
6139 | not the current buffer. If we're at the | |
6140 | beginning of a key sequence, switch buffers. */ | |
6141 | if (last_real_key_start == 0 | |
8c18cbfb KH |
6142 | && WINDOWP (window) |
6143 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 6144 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 6145 | { |
7e85b935 RS |
6146 | keybuf[t] = key; |
6147 | mock_input = t + 1; | |
6148 | ||
6149 | /* Arrange to go back to the original buffer once we're | |
6150 | done reading the key sequence. Note that we can't | |
6151 | use save_excursion_{save,restore} here, because they | |
6152 | save point as well as the current buffer; we don't | |
6153 | want to save point, because redisplay may change it, | |
6154 | to accommodate a Fset_window_start or something. We | |
6155 | don't want to do this at the top of the function, | |
6156 | because we may get input from a subprocess which | |
6157 | wants to change the selected window and stuff (say, | |
6158 | emacsclient). */ | |
6159 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
6160 | ||
6161 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 6162 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 6163 | goto replay_sequence; |
0a7f1fc0 | 6164 | } |
e0dff5f6 RS |
6165 | /* For a mouse click, get the local text-property keymap |
6166 | of the place clicked on, rather than point. */ | |
6167 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
6168 | && ! localized_local_map) | |
5ec75a55 | 6169 | { |
e0dff5f6 RS |
6170 | Lisp_Object map_here, start, pos; |
6171 | ||
6172 | localized_local_map = 1; | |
6173 | start = EVENT_START (key); | |
6174 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
6175 | { | |
6176 | pos = POSN_BUFFER_POSN (start); | |
b78ce8fb RS |
6177 | if (INTEGERP (pos) |
6178 | && XINT (pos) >= BEG && XINT (pos) <= Z) | |
e0dff5f6 RS |
6179 | { |
6180 | map_here = get_local_map (XINT (pos), current_buffer); | |
6181 | if (!EQ (map_here, orig_local_map)) | |
6182 | { | |
6183 | orig_local_map = map_here; | |
6184 | keybuf[t] = key; | |
6185 | mock_input = t + 1; | |
5ec75a55 | 6186 | |
e0dff5f6 RS |
6187 | goto replay_sequence; |
6188 | } | |
6189 | } | |
6190 | } | |
6191 | } | |
6192 | ||
6193 | /* Expand mode-line and scroll-bar events into two events: | |
6194 | use posn as a fake prefix key. */ | |
6195 | if (SYMBOLP (posn)) | |
6196 | { | |
7e85b935 | 6197 | if (t + 1 >= bufsize) |
3fe8e9a2 | 6198 | error ("Key sequence too long"); |
7e85b935 RS |
6199 | keybuf[t] = posn; |
6200 | keybuf[t+1] = key; | |
6201 | mock_input = t + 2; | |
6202 | ||
6203 | /* Zap the position in key, so we know that we've | |
6204 | expanded it, and don't try to do so again. */ | |
6205 | POSN_BUFFER_POSN (EVENT_START (key)) | |
6206 | = Fcons (posn, Qnil); | |
6207 | goto replay_key; | |
5ec75a55 | 6208 | } |
0a7f1fc0 | 6209 | } |
7e85b935 | 6210 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 6211 | { |
ce98e608 KH |
6212 | /* If we're at the beginning of a key sequence, and the caller |
6213 | says it's okay, go ahead and return this event. If we're | |
6214 | in the midst of a key sequence, delay it until the end. */ | |
6215 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
6216 | { |
6217 | delayed_switch_frame = key; | |
6218 | goto replay_key; | |
6219 | } | |
6220 | } | |
7a80a6f6 RS |
6221 | else if (CONSP (XCONS (key)->cdr) |
6222 | && CONSP (EVENT_START (key)) | |
6223 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 6224 | { |
9b8eb840 | 6225 | Lisp_Object posn; |
7e85b935 | 6226 | |
9b8eb840 | 6227 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
6228 | /* Handle menu-bar events: |
6229 | insert the dummy prefix event `menu-bar'. */ | |
6230 | if (EQ (posn, Qmenu_bar)) | |
6231 | { | |
6232 | if (t + 1 >= bufsize) | |
3fe8e9a2 | 6233 | error ("Key sequence too long"); |
7e85b935 RS |
6234 | keybuf[t] = posn; |
6235 | keybuf[t+1] = key; | |
6236 | ||
6237 | /* Zap the position in key, so we know that we've | |
6238 | expanded it, and don't try to do so again. */ | |
6239 | POSN_BUFFER_POSN (EVENT_START (key)) | |
6240 | = Fcons (posn, Qnil); | |
6241 | ||
6242 | mock_input = t + 2; | |
6243 | goto replay_sequence; | |
6244 | } | |
8c18cbfb | 6245 | else if (CONSP (posn)) |
7e85b935 RS |
6246 | { |
6247 | /* We're looking at the second event of a | |
6248 | sequence which we expanded before. Set | |
6249 | last_real_key_start appropriately. */ | |
6250 | if (last_real_key_start == t && t > 0) | |
6251 | last_real_key_start = t - 1; | |
6252 | } | |
a6d53864 | 6253 | } |
284f4730 | 6254 | } |
f4255cd1 JB |
6255 | |
6256 | /* We have finally decided that KEY is something we might want | |
6257 | to look up. */ | |
284f4730 JB |
6258 | first_binding = (follow_key (key, |
6259 | nmaps - first_binding, | |
253598e4 | 6260 | submaps + first_binding, |
284f4730 | 6261 | defs + first_binding, |
4e50f26a | 6262 | submaps + first_binding) |
284f4730 | 6263 | + first_binding); |
0a7f1fc0 | 6264 | |
f4255cd1 | 6265 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
6266 | if (first_binding >= nmaps) |
6267 | { | |
9b8eb840 | 6268 | Lisp_Object head; |
0a7f1fc0 | 6269 | |
9b8eb840 | 6270 | head = EVENT_HEAD (key); |
24736fbc | 6271 | if (help_char_p (head) && t > 0) |
7e85b935 RS |
6272 | { |
6273 | read_key_sequence_cmd = Vprefix_help_command; | |
6274 | keybuf[t++] = key; | |
6275 | last_nonmenu_event = key; | |
bc536d84 RS |
6276 | /* The Microsoft C compiler can't handle the goto that |
6277 | would go here. */ | |
309b0fc8 | 6278 | dummyflag = 1; |
0d882d52 | 6279 | break; |
7e85b935 RS |
6280 | } |
6281 | ||
8c18cbfb | 6282 | if (SYMBOLP (head)) |
0a7f1fc0 | 6283 | { |
9b8eb840 KH |
6284 | Lisp_Object breakdown; |
6285 | int modifiers; | |
0a7f1fc0 | 6286 | |
9b8eb840 KH |
6287 | breakdown = parse_modifiers (head); |
6288 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
6289 | /* Attempt to reduce an unbound mouse event to a simpler |
6290 | event that is bound: | |
6291 | Drags reduce to clicks. | |
6292 | Double-clicks reduce to clicks. | |
6293 | Triple-clicks reduce to double-clicks, then to clicks. | |
6294 | Down-clicks are eliminated. | |
6295 | Double-downs reduce to downs, then are eliminated. | |
6296 | Triple-downs reduce to double-downs, then to downs, | |
6297 | then are eliminated. */ | |
6298 | if (modifiers & (down_modifier | drag_modifier | |
6299 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 6300 | { |
559f9d04 RS |
6301 | while (modifiers & (down_modifier | drag_modifier |
6302 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
6303 | { |
6304 | Lisp_Object new_head, new_click; | |
6305 | if (modifiers & triple_modifier) | |
6306 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
6307 | else if (modifiers & double_modifier) |
6308 | modifiers &= ~double_modifier; | |
6309 | else if (modifiers & drag_modifier) | |
6310 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
6311 | else |
6312 | { | |
6313 | /* Dispose of this `down' event by simply jumping | |
6314 | back to replay_key, to get another event. | |
6315 | ||
6316 | Note that if this event came from mock input, | |
6317 | then just jumping back to replay_key will just | |
6318 | hand it to us again. So we have to wipe out any | |
6319 | mock input. | |
6320 | ||
6321 | We could delete keybuf[t] and shift everything | |
6322 | after that to the left by one spot, but we'd also | |
6323 | have to fix up any variable that points into | |
6324 | keybuf, and shifting isn't really necessary | |
6325 | anyway. | |
6326 | ||
6327 | Adding prefixes for non-textual mouse clicks | |
6328 | creates two characters of mock input, and both | |
6329 | must be thrown away. If we're only looking at | |
6330 | the prefix now, we can just jump back to | |
6331 | replay_key. On the other hand, if we've already | |
6332 | processed the prefix, and now the actual click | |
6333 | itself is giving us trouble, then we've lost the | |
6334 | state of the keymaps we want to backtrack to, and | |
6335 | we need to replay the whole sequence to rebuild | |
6336 | it. | |
6337 | ||
6338 | Beyond that, only function key expansion could | |
6339 | create more than two keys, but that should never | |
6340 | generate mouse events, so it's okay to zero | |
6341 | mock_input in that case too. | |
6342 | ||
6343 | Isn't this just the most wonderful code ever? */ | |
6344 | if (t == last_real_key_start) | |
6345 | { | |
6346 | mock_input = 0; | |
6347 | goto replay_key; | |
6348 | } | |
6349 | else | |
6350 | { | |
6351 | mock_input = last_real_key_start; | |
6352 | goto replay_sequence; | |
6353 | } | |
6354 | } | |
6355 | ||
27203ead RS |
6356 | new_head |
6357 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
6358 | new_click | |
6359 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
6360 | |
6361 | /* Look for a binding for this new key. follow_key | |
6362 | promises that it didn't munge submaps the | |
6363 | last time we called it, since key was unbound. */ | |
27203ead RS |
6364 | first_binding |
6365 | = (follow_key (new_click, | |
6366 | nmaps - local_first_binding, | |
6367 | submaps + local_first_binding, | |
6368 | defs + local_first_binding, | |
4e50f26a | 6369 | submaps + local_first_binding) |
27203ead | 6370 | + local_first_binding); |
fbcd35bd JB |
6371 | |
6372 | /* If that click is bound, go for it. */ | |
6373 | if (first_binding < nmaps) | |
6374 | { | |
6375 | key = new_click; | |
6376 | break; | |
6377 | } | |
6378 | /* Otherwise, we'll leave key set to the drag event. */ | |
6379 | } | |
0a7f1fc0 JB |
6380 | } |
6381 | } | |
6382 | } | |
6383 | ||
284f4730 | 6384 | keybuf[t++] = key; |
7d6de002 RS |
6385 | /* Normally, last_nonmenu_event gets the previous key we read. |
6386 | But when a mouse popup menu is being used, | |
6387 | we don't update last_nonmenu_event; it continues to hold the mouse | |
6388 | event that preceded the first level of menu. */ | |
6389 | if (!used_mouse_menu) | |
6390 | last_nonmenu_event = key; | |
284f4730 | 6391 | |
6321824f RS |
6392 | /* Record what part of this_command_keys is the current key sequence. */ |
6393 | this_single_command_key_start = this_command_key_count - t; | |
6394 | ||
3fe8e9a2 RS |
6395 | prev_fkey_map = fkey_map; |
6396 | prev_fkey_start = fkey_start; | |
6397 | prev_fkey_end = fkey_end; | |
6398 | ||
6399 | prev_keytran_map = keytran_map; | |
6400 | prev_keytran_start = keytran_start; | |
6401 | prev_keytran_end = keytran_end; | |
6402 | ||
284f4730 | 6403 | /* If the sequence is unbound, see if we can hang a function key |
253598e4 JB |
6404 | off the end of it. We only want to scan real keyboard input |
6405 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 6406 | re-reading old events, don't examine it. */ |
4e50f26a | 6407 | if (first_binding >= nmaps |
253598e4 | 6408 | && t >= mock_input) |
284f4730 JB |
6409 | { |
6410 | Lisp_Object fkey_next; | |
6411 | ||
e9bf89a0 RS |
6412 | /* Continue scan from fkey_end until we find a bound suffix. |
6413 | If we fail, increment fkey_start | |
6414 | and start fkey_end from there. */ | |
284f4730 JB |
6415 | while (fkey_end < t) |
6416 | { | |
f4255cd1 JB |
6417 | Lisp_Object key; |
6418 | ||
6419 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
6420 | /* Look up meta-characters by prefixing them |
6421 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 6422 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 6423 | { |
e74fbc70 RS |
6424 | fkey_next |
6425 | = get_keymap_1 | |
f4255cd1 | 6426 | (get_keyelt |
e74fbc70 | 6427 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 6428 | 0, 1); |
bb9e9bed | 6429 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 6430 | } |
067ffa38 JB |
6431 | else |
6432 | fkey_next = fkey_map; | |
6433 | ||
e74fbc70 RS |
6434 | fkey_next |
6435 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 6436 | |
7a80a6f6 RS |
6437 | #if 0 /* I didn't turn this on, because it might cause trouble |
6438 | for the mapping of return into C-m and tab into C-i. */ | |
6439 | /* Optionally don't map function keys into other things. | |
6440 | This enables the user to redefine kp- keys easily. */ | |
6441 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
6442 | fkey_next = Qnil; | |
6443 | #endif | |
6444 | ||
1abe6abe RS |
6445 | /* If the function key map gives a function, not an |
6446 | array, then call the function with no args and use | |
6447 | its value instead. */ | |
6448 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
6449 | && fkey_end == t) | |
6450 | { | |
6451 | struct gcpro gcpro1, gcpro2, gcpro3; | |
6452 | Lisp_Object tem; | |
6453 | tem = fkey_next; | |
6454 | ||
6455 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 6456 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
6457 | UNGCPRO; |
6458 | /* If the function returned something invalid, | |
6459 | barf--don't ignore it. | |
df0f2ba1 | 6460 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
6461 | other variables.) */ |
6462 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
6321824f | 6463 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
6464 | } |
6465 | ||
e9bf89a0 RS |
6466 | function_key_possible = ! NILP (fkey_next); |
6467 | ||
85bc5181 | 6468 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 6469 | function key map and it's a suffix of the current |
85bc5181 | 6470 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 6471 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 6472 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
6473 | && fkey_end == t) |
6474 | { | |
2e864a76 | 6475 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
6476 | |
6477 | t = fkey_start + len; | |
284f4730 | 6478 | if (t >= bufsize) |
3fe8e9a2 | 6479 | error ("Key sequence too long"); |
284f4730 | 6480 | |
f5ea6163 JB |
6481 | if (VECTORP (fkey_next)) |
6482 | bcopy (XVECTOR (fkey_next)->contents, | |
6483 | keybuf + fkey_start, | |
6484 | (t - fkey_start) * sizeof (keybuf[0])); | |
6485 | else if (STRINGP (fkey_next)) | |
6486 | { | |
6487 | int i; | |
6488 | ||
6489 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
6490 | XSETFASTINT (keybuf[fkey_start + i], |
6491 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 6492 | } |
df0f2ba1 | 6493 | |
284f4730 JB |
6494 | mock_input = t; |
6495 | fkey_start = fkey_end = t; | |
32e6d806 | 6496 | fkey_map = Vfunction_key_map; |
284f4730 | 6497 | |
00a78037 RS |
6498 | /* Do pass the results through key-translation-map. */ |
6499 | keytran_start = keytran_end = 0; | |
6500 | keytran_map = Vkey_translation_map; | |
6501 | ||
f4255cd1 | 6502 | goto replay_sequence; |
284f4730 | 6503 | } |
df0f2ba1 | 6504 | |
f4255cd1 | 6505 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 6506 | |
df0f2ba1 | 6507 | /* If we no longer have a bound suffix, try a new positions for |
a764a753 | 6508 | fkey_start. */ |
284f4730 JB |
6509 | if (NILP (fkey_map)) |
6510 | { | |
6511 | fkey_end = ++fkey_start; | |
6512 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 6513 | function_key_possible = 0; |
284f4730 JB |
6514 | } |
6515 | } | |
6516 | } | |
a612e298 RS |
6517 | |
6518 | /* Look for this sequence in key-translation-map. */ | |
6519 | { | |
6520 | Lisp_Object keytran_next; | |
6521 | ||
6522 | /* Scan from keytran_end until we find a bound suffix. */ | |
6523 | while (keytran_end < t) | |
6524 | { | |
6525 | Lisp_Object key; | |
6526 | ||
6527 | key = keybuf[keytran_end++]; | |
6528 | /* Look up meta-characters by prefixing them | |
6529 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 6530 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
6531 | { |
6532 | keytran_next | |
6533 | = get_keymap_1 | |
6534 | (get_keyelt | |
6535 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
6536 | 0, 1); | |
bb9e9bed | 6537 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
6538 | } |
6539 | else | |
6540 | keytran_next = keytran_map; | |
6541 | ||
6542 | keytran_next | |
6543 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
6544 | ||
1abe6abe RS |
6545 | /* If the key translation map gives a function, not an |
6546 | array, then call the function with no args and use | |
6547 | its value instead. */ | |
6548 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
6549 | && keytran_end == t) | |
6550 | { | |
6551 | struct gcpro gcpro1, gcpro2, gcpro3; | |
6552 | Lisp_Object tem; | |
6553 | tem = keytran_next; | |
6554 | ||
40932d1a | 6555 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 6556 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
6557 | UNGCPRO; |
6558 | /* If the function returned something invalid, | |
6559 | barf--don't ignore it. | |
df0f2ba1 | 6560 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
6561 | other variables.) */ |
6562 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 6563 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
6564 | } |
6565 | ||
00a78037 RS |
6566 | key_translation_possible = ! NILP (keytran_next); |
6567 | ||
a612e298 | 6568 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 6569 | key translation map and it's a suffix of the current |
a612e298 RS |
6570 | sequence (i.e. keytran_end == t), replace it with |
6571 | the binding and restart with keytran_start at the end. */ | |
6572 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
6573 | && keytran_end == t) | |
6574 | { | |
2e864a76 | 6575 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
6576 | |
6577 | t = keytran_start + len; | |
6578 | if (t >= bufsize) | |
3fe8e9a2 | 6579 | error ("Key sequence too long"); |
a612e298 RS |
6580 | |
6581 | if (VECTORP (keytran_next)) | |
6582 | bcopy (XVECTOR (keytran_next)->contents, | |
6583 | keybuf + keytran_start, | |
6584 | (t - keytran_start) * sizeof (keybuf[0])); | |
6585 | else if (STRINGP (keytran_next)) | |
6586 | { | |
6587 | int i; | |
6588 | ||
6589 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
6590 | XSETFASTINT (keybuf[keytran_start + i], |
6591 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
6592 | } |
6593 | ||
6594 | mock_input = t; | |
6595 | keytran_start = keytran_end = t; | |
6596 | keytran_map = Vkey_translation_map; | |
6597 | ||
00a78037 RS |
6598 | /* Don't pass the results of key-translation-map |
6599 | through function-key-map. */ | |
6600 | fkey_start = fkey_end = t; | |
6601 | fkey_map = Vkey_translation_map; | |
6602 | ||
a612e298 RS |
6603 | goto replay_sequence; |
6604 | } | |
6605 | ||
6606 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
6607 | ||
df0f2ba1 | 6608 | /* If we no longer have a bound suffix, try a new positions for |
a612e298 RS |
6609 | keytran_start. */ |
6610 | if (NILP (keytran_map)) | |
6611 | { | |
6612 | keytran_end = ++keytran_start; | |
6613 | keytran_map = Vkey_translation_map; | |
00a78037 | 6614 | key_translation_possible = 0; |
a612e298 RS |
6615 | } |
6616 | } | |
6617 | } | |
4e50f26a RS |
6618 | |
6619 | /* If KEY is not defined in any of the keymaps, | |
6620 | and cannot be part of a function key or translation, | |
6621 | and is an upper case letter | |
6622 | use the corresponding lower-case letter instead. */ | |
6623 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 6624 | && ! key_translation_possible |
8c18cbfb | 6625 | && INTEGERP (key) |
4e50f26a RS |
6626 | && ((((XINT (key) & 0x3ffff) |
6627 | < XSTRING (current_buffer->downcase_table)->size) | |
6628 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
6629 | || (XINT (key) & shift_modifier))) | |
6630 | { | |
569871d2 | 6631 | Lisp_Object new_key; |
569871d2 | 6632 | |
309b0fc8 RS |
6633 | original_uppercase = key; |
6634 | original_uppercase_position = t - 1; | |
6635 | ||
831f35a2 | 6636 | if (XINT (key) & shift_modifier) |
569871d2 | 6637 | XSETINT (new_key, XINT (key) & ~shift_modifier); |
4e50f26a | 6638 | else |
569871d2 RS |
6639 | XSETINT (new_key, (DOWNCASE (XINT (key) & 0x3ffff) |
6640 | | (XINT (key) & ~0x3ffff))); | |
6641 | ||
3fe8e9a2 RS |
6642 | /* We have to do this unconditionally, regardless of whether |
6643 | the lower-case char is defined in the keymaps, because they | |
6644 | might get translated through function-key-map. */ | |
6645 | keybuf[t - 1] = new_key; | |
6646 | mock_input = t; | |
6647 | ||
6648 | fkey_map = prev_fkey_map; | |
6649 | fkey_start = prev_fkey_start; | |
6650 | fkey_end = prev_fkey_end; | |
6651 | ||
6652 | keytran_map = prev_keytran_map; | |
6653 | keytran_start = prev_keytran_start; | |
6654 | keytran_end = prev_keytran_end; | |
6655 | ||
6656 | goto replay_sequence; | |
4e50f26a | 6657 | } |
ef8fd672 RS |
6658 | /* If KEY is not defined in any of the keymaps, |
6659 | and cannot be part of a function key or translation, | |
6660 | and is a shifted function key, | |
6661 | use the corresponding unshifted function key instead. */ | |
6662 | if (first_binding == nmaps && ! function_key_possible | |
6663 | && ! key_translation_possible | |
6664 | && SYMBOLP (key)) | |
6665 | { | |
6666 | Lisp_Object breakdown; | |
6667 | int modifiers; | |
6668 | ||
6669 | breakdown = parse_modifiers (key); | |
6670 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
6671 | if (modifiers & shift_modifier) | |
6672 | { | |
569871d2 | 6673 | Lisp_Object new_key; |
3fe8e9a2 RS |
6674 | |
6675 | original_uppercase = key; | |
6676 | original_uppercase_position = t - 1; | |
ef8fd672 | 6677 | |
569871d2 RS |
6678 | modifiers &= ~shift_modifier; |
6679 | new_key = apply_modifiers (modifiers, | |
6680 | XCONS (breakdown)->car); | |
6681 | ||
3fe8e9a2 RS |
6682 | keybuf[t - 1] = new_key; |
6683 | mock_input = t; | |
6684 | ||
6685 | fkey_map = prev_fkey_map; | |
6686 | fkey_start = prev_fkey_start; | |
6687 | fkey_end = prev_fkey_end; | |
6688 | ||
6689 | keytran_map = prev_keytran_map; | |
6690 | keytran_start = prev_keytran_start; | |
6691 | keytran_end = prev_keytran_end; | |
6692 | ||
6693 | goto replay_sequence; | |
ef8fd672 RS |
6694 | } |
6695 | } | |
284f4730 JB |
6696 | } |
6697 | ||
309b0fc8 | 6698 | if (!dummyflag) |
bc536d84 RS |
6699 | read_key_sequence_cmd = (first_binding < nmaps |
6700 | ? defs[first_binding] | |
6701 | : Qnil); | |
284f4730 | 6702 | |
cd21b839 | 6703 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 6704 | unbind_to (count, Qnil); |
07f76a14 | 6705 | |
3fe8e9a2 RS |
6706 | /* Don't downcase the last character if the caller says don't. |
6707 | Don't downcase it if the result is undefined, either. */ | |
6708 | if ((dont_downcase_last || first_binding >= nmaps) | |
6709 | && t - 1 == original_uppercase_position) | |
309b0fc8 RS |
6710 | keybuf[t - 1] = original_uppercase; |
6711 | ||
07f76a14 JB |
6712 | /* Occasionally we fabricate events, perhaps by expanding something |
6713 | according to function-key-map, or by adding a prefix symbol to a | |
6714 | mouse click in the scroll bar or modeline. In this cases, return | |
6715 | the entire generated key sequence, even if we hit an unbound | |
6716 | prefix or a definition before the end. This means that you will | |
6717 | be able to push back the event properly, and also means that | |
6718 | read-key-sequence will always return a logical unit. | |
6719 | ||
6720 | Better ideas? */ | |
cca310da JB |
6721 | for (; t < mock_input; t++) |
6722 | { | |
a98ea3f9 RS |
6723 | if (echo_keystrokes) |
6724 | echo_char (keybuf[t]); | |
cca310da JB |
6725 | add_command_key (keybuf[t]); |
6726 | } | |
07f76a14 | 6727 | |
284f4730 JB |
6728 | return t; |
6729 | } | |
6730 | ||
a612e298 RS |
6731 | #if 0 /* This doc string is too long for some compilers. |
6732 | This commented-out definition serves for DOC. */ | |
ce98e608 | 6733 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
6734 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
6735 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
6736 | current local and global maps.\n\ | |
6737 | \n\ | |
c0a58692 RS |
6738 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
6739 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
6740 | as a continuation of the previous key.\n\ | |
284f4730 | 6741 | \n\ |
309b0fc8 RS |
6742 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
6743 | convert the last event to lower case. (Normally any upper case event\n\ | |
6744 | is converted to lower case if the original event is undefined and the lower\n\ | |
6745 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
6746 | a key sequence to be defined.\n\ | |
6747 | \n\ | |
cb5df6ae JB |
6748 | A C-g typed while in this function is treated like any other character,\n\ |
6749 | and `quit-flag' is not set.\n\ | |
6750 | \n\ | |
6751 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
6752 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
6753 | of the selected window as normal.\n\ | |
ede41463 | 6754 | ""\n\ |
cb5df6ae JB |
6755 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
6756 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
6757 | or multi-click event is unbound, but the corresponding click event would\n\ |
6758 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 6759 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 6760 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
6761 | \n\ |
6762 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
6763 | lines separating windows, and scroll bars with imaginary keys\n\ |
6764 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 6765 | \n\ |
ce98e608 KH |
6766 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
6767 | function will process a switch-frame event if the user switches frames\n\ | |
6768 | before typing anything. If the user switches frames in the middle of a\n\ | |
6769 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
6770 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
6771 | \n\ |
6772 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
6773 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 6774 | `function-key-map' for more details.") |
11e08aab | 6775 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
a612e298 RS |
6776 | #endif |
6777 | ||
ce98e608 | 6778 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 6779 | 0) |
ce98e608 | 6780 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 6781 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 6782 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
6783 | { |
6784 | Lisp_Object keybuf[30]; | |
6785 | register int i; | |
6786 | struct gcpro gcpro1, gcpro2; | |
6787 | ||
6788 | if (!NILP (prompt)) | |
6789 | CHECK_STRING (prompt, 0); | |
6790 | QUIT; | |
6791 | ||
6792 | bzero (keybuf, sizeof keybuf); | |
6793 | GCPRO1 (keybuf[0]); | |
6794 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
6795 | ||
daa37602 | 6796 | if (NILP (continue_echo)) |
6321824f RS |
6797 | { |
6798 | this_command_key_count = 0; | |
6799 | this_single_command_key_start = 0; | |
6800 | } | |
c0a58692 | 6801 | |
309b0fc8 | 6802 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
6803 | prompt, ! NILP (dont_downcase_last), |
6804 | ! NILP (can_return_switch_frame)); | |
284f4730 | 6805 | |
dcc408a0 RS |
6806 | if (i == -1) |
6807 | { | |
6808 | Vquit_flag = Qt; | |
6809 | QUIT; | |
6810 | } | |
284f4730 | 6811 | UNGCPRO; |
86e5706b | 6812 | return make_event_array (i, keybuf); |
284f4730 JB |
6813 | } |
6814 | \f | |
158f7532 | 6815 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 4, 0, |
284f4730 JB |
6816 | "Execute CMD as an editor command.\n\ |
6817 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
6818 | Optional second arg RECORD-FLAG non-nil\n\ | |
6819 | means unconditionally put this command in `command-history'.\n\ | |
aaf2ead7 RS |
6820 | Otherwise, that is done only if an arg is read using the minibuffer.\n\ |
6821 | The argument KEYS specifies the value to use instead of (this-command-keys)\n\ | |
6321824f | 6822 | when reading the arguments; if it is nil, (this-command-keys) is used.\n\ |
158f7532 RS |
6823 | The argument SPECIAL, if non-nil, means that this command is executing\n\ |
6824 | a special event, so ignore the prefix argument and don't clear it.") | |
6825 | (cmd, record_flag, keys, special) | |
6826 | Lisp_Object cmd, record_flag, keys, special; | |
284f4730 JB |
6827 | { |
6828 | register Lisp_Object final; | |
6829 | register Lisp_Object tem; | |
6830 | Lisp_Object prefixarg; | |
6831 | struct backtrace backtrace; | |
6832 | extern int debug_on_next_call; | |
6833 | ||
284f4730 JB |
6834 | debug_on_next_call = 0; |
6835 | ||
158f7532 RS |
6836 | if (NILP (special)) |
6837 | { | |
6838 | prefixarg = current_kboard->Vprefix_arg; | |
6839 | Vcurrent_prefix_arg = prefixarg; | |
6840 | current_kboard->Vprefix_arg = Qnil; | |
6841 | } | |
6842 | else | |
6843 | prefixarg = Qnil; | |
6844 | ||
8c18cbfb | 6845 | if (SYMBOLP (cmd)) |
284f4730 JB |
6846 | { |
6847 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 6848 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
b78ce8fb RS |
6849 | { |
6850 | tem = Fsymbol_value (Qdisabled_command_hook); | |
6851 | if (!NILP (tem)) | |
6852 | return call1 (Vrun_hooks, Qdisabled_command_hook); | |
6853 | } | |
284f4730 JB |
6854 | } |
6855 | ||
01e26217 | 6856 | while (1) |
284f4730 | 6857 | { |
ffd56f97 | 6858 | final = Findirect_function (cmd); |
284f4730 JB |
6859 | |
6860 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
b516a185 RS |
6861 | { |
6862 | struct gcpro gcpro1, gcpro2; | |
6863 | ||
6864 | GCPRO2 (cmd, prefixarg); | |
6865 | do_autoload (final, cmd); | |
6866 | UNGCPRO; | |
6867 | } | |
284f4730 JB |
6868 | else |
6869 | break; | |
6870 | } | |
6871 | ||
8c18cbfb | 6872 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
6873 | { |
6874 | /* If requested, place the macro in the command history. For | |
6875 | other sorts of commands, call-interactively takes care of | |
6876 | this. */ | |
e57d8fd8 | 6877 | if (!NILP (record_flag)) |
284f4730 JB |
6878 | Vcommand_history |
6879 | = Fcons (Fcons (Qexecute_kbd_macro, | |
6880 | Fcons (final, Fcons (prefixarg, Qnil))), | |
6881 | Vcommand_history); | |
6882 | ||
6883 | return Fexecute_kbd_macro (final, prefixarg); | |
6884 | } | |
8c18cbfb | 6885 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
6886 | { |
6887 | backtrace.next = backtrace_list; | |
6888 | backtrace_list = &backtrace; | |
6889 | backtrace.function = &Qcall_interactively; | |
6890 | backtrace.args = &cmd; | |
6891 | backtrace.nargs = 1; | |
6892 | backtrace.evalargs = 0; | |
6893 | ||
e57d8fd8 | 6894 | tem = Fcall_interactively (cmd, record_flag, keys); |
284f4730 JB |
6895 | |
6896 | backtrace_list = backtrace.next; | |
6897 | return tem; | |
6898 | } | |
6899 | return Qnil; | |
6900 | } | |
6901 | \f | |
284f4730 JB |
6902 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
6903 | 1, 1, "P", | |
6904 | "Read function name, then read its arguments and call it.") | |
6905 | (prefixarg) | |
6906 | Lisp_Object prefixarg; | |
6907 | { | |
6908 | Lisp_Object function; | |
6909 | char buf[40]; | |
6910 | Lisp_Object saved_keys; | |
5434fce6 | 6911 | Lisp_Object bindings, value; |
214360e9 | 6912 | struct gcpro gcpro1, gcpro2; |
284f4730 | 6913 | |
b0f2a7bf KH |
6914 | saved_keys = Fvector (this_command_key_count, |
6915 | XVECTOR (this_command_keys)->contents); | |
284f4730 | 6916 | buf[0] = 0; |
fde7aff8 | 6917 | GCPRO2 (saved_keys, prefixarg); |
284f4730 JB |
6918 | |
6919 | if (EQ (prefixarg, Qminus)) | |
6920 | strcpy (buf, "- "); | |
6921 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
6922 | strcpy (buf, "C-u "); | |
8c18cbfb | 6923 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
5d5b907f RS |
6924 | { |
6925 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6926 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
6927 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6928 | sprintf (buf, "%ld ", XINT (XCONS (prefixarg)->car)); | |
6929 | else | |
6930 | abort (); | |
6931 | } | |
8c18cbfb | 6932 | else if (INTEGERP (prefixarg)) |
5d5b907f RS |
6933 | { |
6934 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6935 | sprintf (buf, "%d ", XINT (prefixarg)); | |
6936 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6937 | sprintf (buf, "%ld ", XINT (prefixarg)); | |
6938 | else | |
6939 | abort (); | |
6940 | } | |
284f4730 JB |
6941 | |
6942 | /* This isn't strictly correct if execute-extended-command | |
6943 | is bound to anything else. Perhaps it should use | |
6944 | this_command_keys? */ | |
6945 | strcat (buf, "M-x "); | |
6946 | ||
6947 | /* Prompt with buf, and then read a string, completing from and | |
6948 | restricting to the set of all defined commands. Don't provide | |
51763820 | 6949 | any initial input. Save the command read on the extended-command |
03b4122a | 6950 | history list. */ |
284f4730 JB |
6951 | function = Fcompleting_read (build_string (buf), |
6952 | Vobarray, Qcommandp, | |
03b4122a | 6953 | Qt, Qnil, Qextended_command_history); |
284f4730 | 6954 | |
1f5b1641 RS |
6955 | if (STRINGP (function) && XSTRING (function)->size == 0) |
6956 | error ("No command name given"); | |
6957 | ||
1113d9db JB |
6958 | /* Set this_command_keys to the concatenation of saved_keys and |
6959 | function, followed by a RET. */ | |
284f4730 | 6960 | { |
1113d9db | 6961 | struct Lisp_String *str; |
b0f2a7bf | 6962 | Lisp_Object *keys; |
284f4730 JB |
6963 | int i; |
6964 | Lisp_Object tem; | |
6965 | ||
1113d9db | 6966 | this_command_key_count = 0; |
6321824f | 6967 | this_single_command_key_start = 0; |
1113d9db | 6968 | |
b0f2a7bf KH |
6969 | keys = XVECTOR (saved_keys)->contents; |
6970 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
6971 | add_command_key (keys[i]); | |
1113d9db JB |
6972 | |
6973 | str = XSTRING (function); | |
6974 | for (i = 0; i < str->size; i++) | |
6975 | { | |
bb9e9bed | 6976 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
6977 | add_command_key (tem); |
6978 | } | |
6979 | ||
bb9e9bed | 6980 | XSETFASTINT (tem, '\015'); |
1113d9db | 6981 | add_command_key (tem); |
284f4730 JB |
6982 | } |
6983 | ||
6984 | UNGCPRO; | |
6985 | ||
0a7f1fc0 | 6986 | function = Fintern (function, Qnil); |
d8bcf58e | 6987 | current_kboard->Vprefix_arg = prefixarg; |
284f4730 JB |
6988 | this_command = function; |
6989 | ||
6526ab49 RS |
6990 | /* If enabled, show which key runs this command. */ |
6991 | if (!NILP (Vsuggest_key_bindings) | |
71012575 | 6992 | && NILP (Vexecuting_macro) |
6526ab49 | 6993 | && SYMBOLP (function)) |
5434fce6 RS |
6994 | bindings = Fwhere_is_internal (function, Voverriding_local_map, |
6995 | Qt, Qnil); | |
6996 | else | |
6997 | bindings = Qnil; | |
6526ab49 | 6998 | |
5434fce6 RS |
6999 | value = Qnil; |
7000 | GCPRO2 (bindings, value); | |
7001 | value = Fcommand_execute (function, Qt, Qnil, Qnil); | |
6526ab49 | 7002 | |
5434fce6 RS |
7003 | /* If the command has a key binding, print it now. */ |
7004 | if (!NILP (bindings)) | |
7005 | { | |
7006 | /* But first wait, and skip the message if there is input. */ | |
7007 | if (!NILP (Fsit_for ((NUMBERP (Vsuggest_key_bindings) | |
7008 | ? Vsuggest_key_bindings : make_number (2)), | |
7009 | Qnil, Qnil))) | |
6526ab49 | 7010 | { |
5434fce6 RS |
7011 | Lisp_Object binding; |
7012 | char *newmessage; | |
7013 | char *oldmessage = echo_area_glyphs; | |
7014 | int oldmessage_len = echo_area_glyphs_length; | |
7015 | ||
7016 | binding = Fkey_description (bindings); | |
7017 | ||
7018 | newmessage | |
7019 | = (char *) alloca (XSYMBOL (function)->name->size | |
7020 | + XSTRING (binding)->size | |
7021 | + 100); | |
7022 | sprintf (newmessage, "You can run the command `%s' by typing %s", | |
6526ab49 | 7023 | XSYMBOL (function)->name->data, |
5434fce6 RS |
7024 | XSTRING (binding)->data); |
7025 | message1_nolog (newmessage); | |
7026 | if (!NILP (Fsit_for ((NUMBERP (Vsuggest_key_bindings) | |
7027 | ? Vsuggest_key_bindings : make_number (2)), | |
7028 | Qnil, Qnil))) | |
7029 | message2_nolog (oldmessage, oldmessage_len); | |
6526ab49 RS |
7030 | } |
7031 | } | |
7032 | ||
5434fce6 | 7033 | RETURN_UNGCPRO (value); |
284f4730 | 7034 | } |
6526ab49 RS |
7035 | |
7036 | /* Find the set of keymaps now active. | |
7037 | Store into *MAPS_P a vector holding the various maps | |
7038 | and return the number of them. The vector was malloc'd | |
7039 | and the caller should free it. */ | |
7040 | ||
7041 | int | |
7042 | current_active_maps (maps_p) | |
7043 | Lisp_Object **maps_p; | |
7044 | { | |
7045 | Lisp_Object *tmaps, *maps; | |
7046 | int nmaps; | |
7047 | ||
7048 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ | |
7049 | if (!NILP (Voverriding_local_map_menu_flag)) | |
7050 | { | |
7051 | /* Yes, use them (if non-nil) as well as the global map. */ | |
7052 | maps = (Lisp_Object *) xmalloc (3 * sizeof (maps[0])); | |
7053 | nmaps = 0; | |
7054 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
7055 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
7056 | if (!NILP (Voverriding_local_map)) | |
7057 | maps[nmaps++] = Voverriding_local_map; | |
7058 | } | |
7059 | else | |
7060 | { | |
7061 | /* No, so use major and minor mode keymaps. */ | |
7062 | nmaps = current_minor_maps (NULL, &tmaps); | |
7063 | maps = (Lisp_Object *) xmalloc ((nmaps + 2) * sizeof (maps[0])); | |
7064 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
7065 | #ifdef USE_TEXT_PROPERTIES | |
7066 | maps[nmaps++] = get_local_map (PT, current_buffer); | |
7067 | #else | |
7068 | maps[nmaps++] = current_buffer->keymap; | |
7069 | #endif | |
7070 | } | |
7071 | maps[nmaps++] = current_global_map; | |
7072 | ||
7073 | *maps_p = maps; | |
7074 | return nmaps; | |
7075 | } | |
284f4730 | 7076 | \f |
d9d4c147 | 7077 | /* Return nonzero if input events are pending. */ |
284f4730 JB |
7078 | |
7079 | detect_input_pending () | |
7080 | { | |
7081 | if (!input_pending) | |
d9d4c147 KH |
7082 | get_input_pending (&input_pending, 0); |
7083 | ||
7084 | return input_pending; | |
7085 | } | |
7086 | ||
b1878f45 | 7087 | /* Return nonzero if input events are pending, and run any pending timers. */ |
d9d4c147 | 7088 | |
87dd9b9b RS |
7089 | detect_input_pending_run_timers (do_display) |
7090 | int do_display; | |
d9d4c147 | 7091 | { |
87dd9b9b RS |
7092 | int old_timers_run = timers_run; |
7093 | ||
d9d4c147 KH |
7094 | if (!input_pending) |
7095 | get_input_pending (&input_pending, 1); | |
284f4730 | 7096 | |
87dd9b9b RS |
7097 | if (old_timers_run != timers_run && do_display) |
7098 | redisplay_preserve_echo_area (); | |
7099 | ||
284f4730 JB |
7100 | return input_pending; |
7101 | } | |
7102 | ||
ffd56f97 JB |
7103 | /* This is called in some cases before a possible quit. |
7104 | It cases the next call to detect_input_pending to recompute input_pending. | |
7105 | So calling this function unnecessarily can't do any harm. */ | |
7106 | clear_input_pending () | |
7107 | { | |
7108 | input_pending = 0; | |
7109 | } | |
7110 | ||
b1878f45 RS |
7111 | /* Return nonzero if there are pending requeued events. |
7112 | This isn't used yet. The hope is to make wait_reading_process_input | |
7113 | call it, and return return if it runs Lisp code that unreads something. | |
7114 | The problem is, kbd_buffer_get_event needs to be fixed to know what | |
7115 | to do in that case. It isn't trivial. */ | |
7116 | ||
7117 | requeued_events_pending_p () | |
7118 | { | |
7119 | return (!NILP (Vunread_command_events) || unread_command_char != -1); | |
7120 | } | |
7121 | ||
7122 | ||
284f4730 JB |
7123 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
7124 | "T if command input is currently available with no waiting.\n\ | |
7125 | Actually, the value is nil only if we can be sure that no input is available.") | |
7126 | () | |
7127 | { | |
24597608 | 7128 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
7129 | return (Qt); |
7130 | ||
d9d4c147 KH |
7131 | get_input_pending (&input_pending, 1); |
7132 | return input_pending > 0 ? Qt : Qnil; | |
284f4730 JB |
7133 | } |
7134 | ||
7135 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 7136 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
7137 | () |
7138 | { | |
5160df46 | 7139 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
7140 | Lisp_Object val; |
7141 | ||
7142 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 7143 | return Fvector (total_keys, keys); |
284f4730 JB |
7144 | else |
7145 | { | |
5160df46 JB |
7146 | val = Fvector (NUM_RECENT_KEYS, keys); |
7147 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
7148 | XVECTOR (val)->contents, |
7149 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 7150 | bcopy (keys, |
284f4730 JB |
7151 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
7152 | recent_keys_index * sizeof (Lisp_Object)); | |
7153 | return val; | |
7154 | } | |
7155 | } | |
7156 | ||
7157 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
7158 | "Return the key sequence that invoked this command.\n\ |
7159 | The value is a string or a vector.") | |
284f4730 JB |
7160 | () |
7161 | { | |
86e5706b RS |
7162 | return make_event_array (this_command_key_count, |
7163 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
7164 | } |
7165 | ||
6321824f RS |
7166 | DEFUN ("this-single-command-keys", Fthis_single_command_keys, |
7167 | Sthis_single_command_keys, 0, 0, 0, | |
7168 | "Return the key sequence that invoked this command.\n\ | |
7169 | Unlike `this-command-keys', this function's value\n\ | |
7170 | does not include prefix arguments.\n\ | |
7171 | The value is a string or a vector.") | |
7172 | () | |
7173 | { | |
7174 | return make_event_array (this_command_key_count | |
7175 | - this_single_command_key_start, | |
7176 | (XVECTOR (this_command_keys)->contents | |
7177 | + this_single_command_key_start)); | |
7178 | } | |
7179 | ||
71918b75 RS |
7180 | DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, |
7181 | Sreset_this_command_lengths, 0, 0, 0, | |
7182 | "Used for complicated reasons in `universal-argument-other-key'.\n\ | |
7183 | \n\ | |
7184 | `universal-argument-other-key' rereads the event just typed.\n\ | |
7185 | It then gets translated through `function-key-map'.\n\ | |
7186 | The translated event gets included in the echo area and in\n\ | |
7187 | the value of `this-command-keys' in addition to the raw original event.\n\ | |
7188 | That is not right.\n\ | |
7189 | \n\ | |
7190 | Calling this function directs the translated event to replace\n\ | |
7191 | the original event, so that only one version of the event actually\n\ | |
7192 | appears in the echo area and in the value of `this-command-keys.'.") | |
7193 | () | |
7194 | { | |
7195 | before_command_restore_flag = 1; | |
7196 | before_command_key_count_1 = before_command_key_count; | |
7197 | before_command_echo_length_1 = before_command_echo_length; | |
7198 | } | |
7199 | ||
284f4730 JB |
7200 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, |
7201 | "Return the current depth in recursive edits.") | |
7202 | () | |
7203 | { | |
7204 | Lisp_Object temp; | |
bb9e9bed | 7205 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
7206 | return temp; |
7207 | } | |
7208 | ||
7209 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
7210 | "FOpen dribble file: ", | |
9b2471df RS |
7211 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
7212 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
7213 | (file) |
7214 | Lisp_Object file; | |
7215 | { | |
6cb52def | 7216 | if (dribble) |
284f4730 | 7217 | { |
6cb52def KH |
7218 | fclose (dribble); |
7219 | dribble = 0; | |
284f4730 | 7220 | } |
6cb52def | 7221 | if (!NILP (file)) |
284f4730 JB |
7222 | { |
7223 | file = Fexpand_file_name (file, Qnil); | |
7224 | dribble = fopen (XSTRING (file)->data, "w"); | |
ab6ca1de KH |
7225 | if (dribble == 0) |
7226 | report_file_error ("Opening dribble", Fcons (file, Qnil)); | |
284f4730 JB |
7227 | } |
7228 | return Qnil; | |
7229 | } | |
7230 | ||
7231 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
7232 | "Discard the contents of the terminal input buffer.\n\ | |
7233 | Also cancel any kbd macro being defined.") | |
7234 | () | |
7235 | { | |
c5fdd383 | 7236 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 JB |
7237 | update_mode_lines++; |
7238 | ||
24597608 | 7239 | Vunread_command_events = Qnil; |
86e5706b | 7240 | unread_command_char = -1; |
284f4730 JB |
7241 | |
7242 | discard_tty_input (); | |
7243 | ||
ff0b5f4c JB |
7244 | /* Without the cast, GCC complains that this assignment loses the |
7245 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
7246 | with that? */ | |
beecf6a1 KH |
7247 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
7248 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
7249 | input_pending = 0; |
7250 | ||
7251 | return Qnil; | |
7252 | } | |
7253 | \f | |
7254 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
7255 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
7256 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
7257 | control, run a subshell instead.\n\n\ | |
284f4730 | 7258 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
7259 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
7260 | \n\ | |
bbdc2092 RS |
7261 | Before suspending, run the normal hook `suspend-hook'.\n\ |
7262 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
7263 | \n\ |
7264 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 7265 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
7266 | (stuffstring) |
7267 | Lisp_Object stuffstring; | |
7268 | { | |
3a69360c | 7269 | Lisp_Object tem; |
284f4730 JB |
7270 | int count = specpdl_ptr - specpdl; |
7271 | int old_height, old_width; | |
7272 | int width, height; | |
b7d2ebbf | 7273 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
7274 | extern init_sys_modes (); |
7275 | ||
7276 | if (!NILP (stuffstring)) | |
7277 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 7278 | |
1e95ed28 JB |
7279 | /* Run the functions in suspend-hook. */ |
7280 | if (!NILP (Vrun_hooks)) | |
7281 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 7282 | |
b7d2ebbf | 7283 | GCPRO1 (stuffstring); |
ff11dfa1 | 7284 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
7285 | reset_sys_modes (); |
7286 | /* sys_suspend can get an error if it tries to fork a subshell | |
7287 | and the system resources aren't available for that. */ | |
7288 | record_unwind_protect (init_sys_modes, 0); | |
7289 | stuff_buffered_input (stuffstring); | |
8026024c KH |
7290 | if (cannot_suspend) |
7291 | sys_subshell (); | |
7292 | else | |
7293 | sys_suspend (); | |
284f4730 JB |
7294 | unbind_to (count, Qnil); |
7295 | ||
7296 | /* Check if terminal/window size has changed. | |
7297 | Note that this is not useful when we are running directly | |
7298 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 7299 | get_frame_size (&width, &height); |
284f4730 | 7300 | if (width != old_width || height != old_height) |
f5ea6163 | 7301 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 7302 | |
1e95ed28 | 7303 | /* Run suspend-resume-hook. */ |
284f4730 JB |
7304 | if (!NILP (Vrun_hooks)) |
7305 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
df0f2ba1 | 7306 | |
284f4730 JB |
7307 | UNGCPRO; |
7308 | return Qnil; | |
7309 | } | |
7310 | ||
7311 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 7312 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
7313 | |
7314 | stuff_buffered_input (stuffstring) | |
7315 | Lisp_Object stuffstring; | |
7316 | { | |
284f4730 JB |
7317 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
7318 | #ifdef BSD | |
7319 | #ifndef BSD4_1 | |
612b78ef | 7320 | register unsigned char *p; |
612b78ef | 7321 | |
8c18cbfb | 7322 | if (STRINGP (stuffstring)) |
284f4730 JB |
7323 | { |
7324 | register int count; | |
7325 | ||
7326 | p = XSTRING (stuffstring)->data; | |
7327 | count = XSTRING (stuffstring)->size; | |
7328 | while (count-- > 0) | |
7329 | stuff_char (*p++); | |
7330 | stuff_char ('\n'); | |
7331 | } | |
7332 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 | 7333 | /* ?? What should this do when we have multiple keyboards?? |
c5fdd383 | 7334 | Should we ignore anything that was typed in at the "wrong" kboard? */ |
beecf6a1 | 7335 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) |
284f4730 | 7336 | { |
beecf6a1 KH |
7337 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
7338 | kbd_fetch_ptr = kbd_buffer; | |
7339 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
7340 | stuff_char (kbd_fetch_ptr->code); | |
7341 | kbd_fetch_ptr->kind = no_event; | |
7342 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
7343 | - kbd_buffer] | |
7b4aedb9 | 7344 | = Qnil); |
284f4730 JB |
7345 | } |
7346 | input_pending = 0; | |
7347 | #endif | |
7348 | #endif /* BSD and not BSD4_1 */ | |
7349 | } | |
7350 | \f | |
ffd56f97 JB |
7351 | set_waiting_for_input (time_to_clear) |
7352 | EMACS_TIME *time_to_clear; | |
284f4730 | 7353 | { |
ffd56f97 | 7354 | input_available_clear_time = time_to_clear; |
284f4730 JB |
7355 | |
7356 | /* Tell interrupt_signal to throw back to read_char, */ | |
7357 | waiting_for_input = 1; | |
7358 | ||
7359 | /* If interrupt_signal was called before and buffered a C-g, | |
7360 | make it run again now, to avoid timing error. */ | |
7361 | if (!NILP (Vquit_flag)) | |
7362 | quit_throw_to_read_char (); | |
284f4730 JB |
7363 | } |
7364 | ||
7365 | clear_waiting_for_input () | |
7366 | { | |
7367 | /* Tell interrupt_signal not to throw back to read_char, */ | |
7368 | waiting_for_input = 0; | |
ffd56f97 | 7369 | input_available_clear_time = 0; |
284f4730 JB |
7370 | } |
7371 | ||
7372 | /* This routine is called at interrupt level in response to C-G. | |
7373 | If interrupt_input, this is the handler for SIGINT. | |
7374 | Otherwise, it is called from kbd_buffer_store_event, | |
7375 | in handling SIGIO or SIGTINT. | |
7376 | ||
7377 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
7378 | immediately throw back to read_char. | |
7379 | ||
7380 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
7381 | This causes eval to throw, when it gets a chance. | |
7382 | If quit-flag is already non-nil, it stops the job right away. */ | |
7383 | ||
7384 | SIGTYPE | |
91c049d4 RS |
7385 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
7386 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
7387 | { |
7388 | char c; | |
7389 | /* Must preserve main program's value of errno. */ | |
7390 | int old_errno = errno; | |
284f4730 | 7391 | |
5970a8cb | 7392 | #if defined (USG) && !defined (POSIX_SIGNALS) |
7a80a6f6 RS |
7393 | if (!read_socket_hook && NILP (Vwindow_system)) |
7394 | { | |
7395 | /* USG systems forget handlers when they are used; | |
7396 | must reestablish each time */ | |
7397 | signal (SIGINT, interrupt_signal); | |
7398 | signal (SIGQUIT, interrupt_signal); | |
7399 | } | |
284f4730 JB |
7400 | #endif /* USG */ |
7401 | ||
7402 | cancel_echoing (); | |
7403 | ||
d5045cf9 | 7404 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
7405 | { |
7406 | fflush (stdout); | |
7407 | reset_sys_modes (); | |
7408 | sigfree (); | |
7409 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
7410 | /* | |
7411 | * On systems which can suspend the current process and return to the original | |
7412 | * shell, this command causes the user to end up back at the shell. | |
7413 | * The "Auto-save" and "Abort" questions are not asked until | |
7414 | * the user elects to return to emacs, at which point he can save the current | |
7415 | * job and either dump core or continue. | |
7416 | */ | |
7417 | sys_suspend (); | |
7418 | #else | |
7419 | #ifdef VMS | |
7420 | if (sys_suspend () == -1) | |
7421 | { | |
7422 | printf ("Not running as a subprocess;\n"); | |
7423 | printf ("you can continue or abort.\n"); | |
7424 | } | |
7425 | #else /* not VMS */ | |
7426 | /* Perhaps should really fork an inferior shell? | |
7427 | But that would not provide any way to get back | |
7428 | to the original shell, ever. */ | |
7429 | printf ("No support for stopping a process on this operating system;\n"); | |
7430 | printf ("you can continue or abort.\n"); | |
7431 | #endif /* not VMS */ | |
7432 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
7433 | #ifdef MSDOS |
7434 | /* We must remain inside the screen area when the internal terminal | |
7435 | is used. Note that [Enter] is not echoed by dos. */ | |
7436 | cursor_to (0, 0); | |
7437 | #endif | |
118d6ca9 RS |
7438 | /* It doesn't work to autosave while GC is in progress; |
7439 | the code used for auto-saving doesn't cope with the mark bit. */ | |
7440 | if (!gc_in_progress) | |
9fd7d808 | 7441 | { |
118d6ca9 RS |
7442 | printf ("Auto-save? (y or n) "); |
7443 | fflush (stdout); | |
7444 | if (((c = getchar ()) & ~040) == 'Y') | |
7445 | { | |
7446 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 | 7447 | #ifdef MSDOS |
118d6ca9 | 7448 | printf ("\r\nAuto-save done"); |
80e4aa30 | 7449 | #else /* not MSDOS */ |
118d6ca9 | 7450 | printf ("Auto-save done\n"); |
80e4aa30 | 7451 | #endif /* not MSDOS */ |
118d6ca9 RS |
7452 | } |
7453 | while (c != '\n') c = getchar (); | |
9fd7d808 | 7454 | } |
118d6ca9 RS |
7455 | else |
7456 | { | |
7457 | /* During GC, it must be safe to reenable quitting again. */ | |
7458 | Vinhibit_quit = Qnil; | |
7459 | #ifdef MSDOS | |
7460 | printf ("\r\n"); | |
7461 | #endif /* not MSDOS */ | |
7462 | printf ("Garbage collection in progress; cannot auto-save now\r\n"); | |
7463 | printf ("but will instead do a real quit after garbage collection ends\r\n"); | |
7464 | fflush (stdout); | |
7465 | } | |
7466 | ||
80e4aa30 RS |
7467 | #ifdef MSDOS |
7468 | printf ("\r\nAbort? (y or n) "); | |
7469 | #else /* not MSDOS */ | |
284f4730 JB |
7470 | #ifdef VMS |
7471 | printf ("Abort (and enter debugger)? (y or n) "); | |
7472 | #else /* not VMS */ | |
7473 | printf ("Abort (and dump core)? (y or n) "); | |
7474 | #endif /* not VMS */ | |
80e4aa30 | 7475 | #endif /* not MSDOS */ |
284f4730 JB |
7476 | fflush (stdout); |
7477 | if (((c = getchar ()) & ~040) == 'Y') | |
7478 | abort (); | |
7479 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
7480 | #ifdef MSDOS |
7481 | printf ("\r\nContinuing...\r\n"); | |
7482 | #else /* not MSDOS */ | |
284f4730 | 7483 | printf ("Continuing...\n"); |
80e4aa30 | 7484 | #endif /* not MSDOS */ |
284f4730 JB |
7485 | fflush (stdout); |
7486 | init_sys_modes (); | |
7487 | } | |
7488 | else | |
7489 | { | |
7490 | /* If executing a function that wants to be interrupted out of | |
7491 | and the user has not deferred quitting by binding `inhibit-quit' | |
7492 | then quit right away. */ | |
7493 | if (immediate_quit && NILP (Vinhibit_quit)) | |
7494 | { | |
7495 | immediate_quit = 0; | |
7496 | sigfree (); | |
7497 | Fsignal (Qquit, Qnil); | |
7498 | } | |
7499 | else | |
7500 | /* Else request quit when it's safe */ | |
7501 | Vquit_flag = Qt; | |
7502 | } | |
7503 | ||
7504 | if (waiting_for_input && !echoing) | |
7505 | quit_throw_to_read_char (); | |
7506 | ||
7507 | errno = old_errno; | |
7508 | } | |
7509 | ||
7510 | /* Handle a C-g by making read_char return C-g. */ | |
7511 | ||
7512 | quit_throw_to_read_char () | |
7513 | { | |
7514 | quit_error_check (); | |
7515 | sigfree (); | |
7516 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 7517 | clear_waiting_for_input (); |
284f4730 JB |
7518 | input_pending = 0; |
7519 | ||
24597608 | 7520 | Vunread_command_events = Qnil; |
86e5706b | 7521 | unread_command_char = -1; |
284f4730 | 7522 | |
087feab3 RS |
7523 | #if 0 /* Currently, sit_for is called from read_char without turning |
7524 | off polling. And that can call set_waiting_for_input. | |
7525 | It seems to be harmless. */ | |
e6b01c14 JB |
7526 | #ifdef POLL_FOR_INPUT |
7527 | /* May be > 1 if in recursive minibuffer. */ | |
7528 | if (poll_suppress_count == 0) | |
7529 | abort (); | |
7530 | #endif | |
087feab3 | 7531 | #endif |
4c52b668 KH |
7532 | if (FRAMEP (internal_last_event_frame) |
7533 | && XFRAME (internal_last_event_frame) != selected_frame) | |
719191cf RS |
7534 | do_switch_frame (make_lispy_switch_frame (internal_last_event_frame), |
7535 | Qnil, 0); | |
e6b01c14 | 7536 | |
284f4730 JB |
7537 | _longjmp (getcjmp, 1); |
7538 | } | |
7539 | \f | |
7540 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
7541 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
7542 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
7543 | nil means use CBREAK mode.\n\ | |
7544 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 7545 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
7546 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
7547 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
7548 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
7549 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
7550 | See also `current-input-mode'.") | |
284f4730 JB |
7551 | (interrupt, flow, meta, quit) |
7552 | Lisp_Object interrupt, flow, meta, quit; | |
7553 | { | |
7554 | if (!NILP (quit) | |
8c18cbfb | 7555 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
7556 | error ("set-input-mode: QUIT must be an ASCII character"); |
7557 | ||
7558 | #ifdef POLL_FOR_INPUT | |
7559 | stop_polling (); | |
7560 | #endif | |
284f4730 | 7561 | |
2ee250ec RS |
7562 | #ifndef MSDOS |
7563 | /* this causes startup screen to be restored and messes with the mouse */ | |
284f4730 | 7564 | reset_sys_modes (); |
2ee250ec RS |
7565 | #endif |
7566 | ||
284f4730 JB |
7567 | #ifdef SIGIO |
7568 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
284f4730 | 7569 | if (read_socket_hook) |
9a0f60bb KH |
7570 | { |
7571 | /* When using X, don't give the user a real choice, | |
7572 | because we haven't implemented the mechanisms to support it. */ | |
7573 | #ifdef NO_SOCK_SIGIO | |
7574 | interrupt_input = 0; | |
7575 | #else /* not NO_SOCK_SIGIO */ | |
7576 | interrupt_input = 1; | |
284f4730 | 7577 | #endif /* NO_SOCK_SIGIO */ |
9a0f60bb KH |
7578 | } |
7579 | else | |
284f4730 JB |
7580 | interrupt_input = !NILP (interrupt); |
7581 | #else /* not SIGIO */ | |
7582 | interrupt_input = 0; | |
7583 | #endif /* not SIGIO */ | |
9a0f60bb | 7584 | |
284f4730 JB |
7585 | /* Our VMS input only works by interrupts, as of now. */ |
7586 | #ifdef VMS | |
7587 | interrupt_input = 1; | |
7588 | #endif | |
9a0f60bb | 7589 | |
284f4730 | 7590 | flow_control = !NILP (flow); |
b04904fb RS |
7591 | if (NILP (meta)) |
7592 | meta_key = 0; | |
7593 | else if (EQ (meta, Qt)) | |
7594 | meta_key = 1; | |
7595 | else | |
7596 | meta_key = 2; | |
284f4730 JB |
7597 | if (!NILP (quit)) |
7598 | /* Don't let this value be out of range. */ | |
7599 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
7600 | ||
2ee250ec | 7601 | #ifndef MSDOS |
284f4730 | 7602 | init_sys_modes (); |
2ee250ec | 7603 | #endif |
34f04431 RS |
7604 | |
7605 | #ifdef POLL_FOR_INPUT | |
7606 | poll_suppress_count = 1; | |
7607 | start_polling (); | |
7608 | #endif | |
284f4730 JB |
7609 | return Qnil; |
7610 | } | |
80645119 JB |
7611 | |
7612 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
7613 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
7614 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
7615 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
7616 | nil, Emacs is using CBREAK mode.\n\ | |
7617 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
7618 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
7619 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
7620 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
7621 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
7622 | all 8 bits as the character code.\n\ | |
80645119 JB |
7623 | QUIT is the character Emacs currently uses to quit.\n\ |
7624 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 7625 | `set-input-mode'.") |
80645119 JB |
7626 | () |
7627 | { | |
7628 | Lisp_Object val[4]; | |
7629 | ||
7630 | val[0] = interrupt_input ? Qt : Qnil; | |
7631 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 7632 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 7633 | XSETFASTINT (val[3], quit_char); |
80645119 | 7634 | |
bf673a7a | 7635 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
7636 | } |
7637 | ||
284f4730 | 7638 | \f |
6c6083a9 | 7639 | /* |
c5fdd383 | 7640 | * Set up a new kboard object with reasonable initial values. |
6c6083a9 KH |
7641 | */ |
7642 | void | |
c5fdd383 KH |
7643 | init_kboard (kb) |
7644 | KBOARD *kb; | |
6c6083a9 | 7645 | { |
217258d5 | 7646 | kb->Voverriding_terminal_local_map = Qnil; |
6c7178b9 | 7647 | kb->Vlast_command = Qnil; |
d8bcf58e | 7648 | kb->Vprefix_arg = Qnil; |
c5fdd383 KH |
7649 | kb->kbd_queue = Qnil; |
7650 | kb->kbd_queue_has_data = 0; | |
7651 | kb->immediate_echo = 0; | |
7652 | kb->echoptr = kb->echobuf; | |
7653 | kb->echo_after_prompt = -1; | |
7654 | kb->kbd_macro_buffer = 0; | |
7655 | kb->kbd_macro_bufsize = 0; | |
7656 | kb->defining_kbd_macro = Qnil; | |
7657 | kb->Vlast_kbd_macro = Qnil; | |
7658 | kb->reference_count = 0; | |
7c97ffdc | 7659 | kb->Vsystem_key_alist = Qnil; |
142e6c73 | 7660 | kb->system_key_syms = Qnil; |
9ba47203 | 7661 | kb->Vdefault_minibuffer_frame = Qnil; |
6c6083a9 KH |
7662 | } |
7663 | ||
7664 | /* | |
c5fdd383 | 7665 | * Destroy the contents of a kboard object, but not the object itself. |
8e6208c5 | 7666 | * We use this just before deleting it, or if we're going to initialize |
6c6083a9 KH |
7667 | * it a second time. |
7668 | */ | |
e50b8090 | 7669 | static void |
c5fdd383 KH |
7670 | wipe_kboard (kb) |
7671 | KBOARD *kb; | |
6c6083a9 | 7672 | { |
c5fdd383 KH |
7673 | if (kb->kbd_macro_buffer) |
7674 | xfree (kb->kbd_macro_buffer); | |
6c6083a9 KH |
7675 | } |
7676 | ||
e50b8090 KH |
7677 | #ifdef MULTI_KBOARD |
7678 | void | |
7679 | delete_kboard (kb) | |
7680 | KBOARD *kb; | |
7681 | { | |
7682 | KBOARD **kbp; | |
7683 | for (kbp = &all_kboards; *kbp != kb; kbp = &(*kbp)->next_kboard) | |
7684 | if (*kbp == NULL) | |
7685 | abort (); | |
7686 | *kbp = kb->next_kboard; | |
7687 | wipe_kboard (kb); | |
7688 | xfree (kb); | |
7689 | } | |
7690 | #endif | |
7691 | ||
284f4730 JB |
7692 | init_keyboard () |
7693 | { | |
284f4730 JB |
7694 | /* This is correct before outermost invocation of the editor loop */ |
7695 | command_loop_level = -1; | |
7696 | immediate_quit = 0; | |
7697 | quit_char = Ctl ('g'); | |
24597608 | 7698 | Vunread_command_events = Qnil; |
86e5706b | 7699 | unread_command_char = -1; |
87dd9b9b | 7700 | EMACS_SET_SECS_USECS (timer_idleness_start_time, -1, -1); |
284f4730 | 7701 | total_keys = 0; |
9deb415a | 7702 | recent_keys_index = 0; |
beecf6a1 KH |
7703 | kbd_fetch_ptr = kbd_buffer; |
7704 | kbd_store_ptr = kbd_buffer; | |
7705 | kbd_buffer_frame_or_window | |
7706 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 7707 | #ifdef HAVE_MOUSE |
a9d77f1f | 7708 | do_mouse_tracking = Qnil; |
2eb6bfbe | 7709 | #endif |
284f4730 JB |
7710 | input_pending = 0; |
7711 | ||
4c52b668 KH |
7712 | /* This means that command_loop_1 won't try to select anything the first |
7713 | time through. */ | |
7714 | internal_last_event_frame = Qnil; | |
7715 | Vlast_event_frame = internal_last_event_frame; | |
4c52b668 | 7716 | |
c5fdd383 | 7717 | #ifdef MULTI_KBOARD |
aaca43a1 | 7718 | current_kboard = initial_kboard; |
6c6083a9 | 7719 | #endif |
aaca43a1 | 7720 | wipe_kboard (current_kboard); |
c5fdd383 | 7721 | init_kboard (current_kboard); |
07d2b8de | 7722 | |
beecf6a1 KH |
7723 | if (initialized) |
7724 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
7725 | ||
7726 | kbd_buffer_frame_or_window | |
7727 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 7728 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
7729 | { |
7730 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 7731 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
7732 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
7733 | SIGQUIT and we can't tell which one it will give us. */ | |
7734 | signal (SIGQUIT, interrupt_signal); | |
7735 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 7736 | } |
284f4730 JB |
7737 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
7738 | #ifdef SIGIO | |
7a80a6f6 RS |
7739 | if (!noninteractive) |
7740 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 7741 | #endif /* SIGIO */ |
284f4730 JB |
7742 | |
7743 | /* Use interrupt input by default, if it works and noninterrupt input | |
7744 | has deficiencies. */ | |
7745 | ||
7746 | #ifdef INTERRUPT_INPUT | |
7747 | interrupt_input = 1; | |
7748 | #else | |
7749 | interrupt_input = 0; | |
7750 | #endif | |
7751 | ||
7752 | /* Our VMS input only works by interrupts, as of now. */ | |
7753 | #ifdef VMS | |
7754 | interrupt_input = 1; | |
7755 | #endif | |
7756 | ||
7757 | sigfree (); | |
7758 | dribble = 0; | |
7759 | ||
7760 | if (keyboard_init_hook) | |
7761 | (*keyboard_init_hook) (); | |
7762 | ||
7763 | #ifdef POLL_FOR_INPUT | |
7764 | poll_suppress_count = 1; | |
7765 | start_polling (); | |
7766 | #endif | |
7767 | } | |
7768 | ||
df0f2ba1 | 7769 | /* This type's only use is in syms_of_keyboard, to initialize the |
284f4730 JB |
7770 | event header symbols and put properties on them. */ |
7771 | struct event_head { | |
7772 | Lisp_Object *var; | |
7773 | char *name; | |
7774 | Lisp_Object *kind; | |
7775 | }; | |
7776 | ||
7777 | struct event_head head_table[] = { | |
7b4aedb9 | 7778 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 7779 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 7780 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 7781 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
7782 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
7783 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
7784 | }; |
7785 | ||
7786 | syms_of_keyboard () | |
7787 | { | |
2e894dab RS |
7788 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
7789 | staticpro (&Qdisabled_command_hook); | |
7790 | ||
284f4730 JB |
7791 | Qself_insert_command = intern ("self-insert-command"); |
7792 | staticpro (&Qself_insert_command); | |
7793 | ||
7794 | Qforward_char = intern ("forward-char"); | |
7795 | staticpro (&Qforward_char); | |
7796 | ||
7797 | Qbackward_char = intern ("backward-char"); | |
7798 | staticpro (&Qbackward_char); | |
7799 | ||
7800 | Qdisabled = intern ("disabled"); | |
7801 | staticpro (&Qdisabled); | |
7802 | ||
e58aa385 RS |
7803 | Qundefined = intern ("undefined"); |
7804 | staticpro (&Qundefined); | |
7805 | ||
86e5706b RS |
7806 | Qpre_command_hook = intern ("pre-command-hook"); |
7807 | staticpro (&Qpre_command_hook); | |
7808 | ||
7809 | Qpost_command_hook = intern ("post-command-hook"); | |
7810 | staticpro (&Qpost_command_hook); | |
7811 | ||
59aadc81 RS |
7812 | Qpost_command_idle_hook = intern ("post-command-idle-hook"); |
7813 | staticpro (&Qpost_command_idle_hook); | |
7814 | ||
3ef14e46 RS |
7815 | Qdeferred_action_function = intern ("deferred-action-function"); |
7816 | staticpro (&Qdeferred_action_function); | |
7817 | ||
40932d1a RS |
7818 | Qcommand_hook_internal = intern ("command-hook-internal"); |
7819 | staticpro (&Qcommand_hook_internal); | |
7820 | ||
284f4730 JB |
7821 | Qfunction_key = intern ("function-key"); |
7822 | staticpro (&Qfunction_key); | |
13b5e56c | 7823 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 7824 | staticpro (&Qmouse_click); |
c04cbc3b RS |
7825 | Qtimer_event = intern ("timer-event"); |
7826 | staticpro (&Qtimer_event); | |
284f4730 | 7827 | |
598a9fa7 JB |
7828 | Qmenu_enable = intern ("menu-enable"); |
7829 | staticpro (&Qmenu_enable); | |
7830 | ||
284f4730 JB |
7831 | Qmode_line = intern ("mode-line"); |
7832 | staticpro (&Qmode_line); | |
e5d77022 JB |
7833 | Qvertical_line = intern ("vertical-line"); |
7834 | staticpro (&Qvertical_line); | |
3c370943 JB |
7835 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
7836 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
7837 | Qmenu_bar = intern ("menu-bar"); |
7838 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
7839 | |
7840 | Qabove_handle = intern ("above-handle"); | |
7841 | staticpro (&Qabove_handle); | |
7842 | Qhandle = intern ("handle"); | |
7843 | staticpro (&Qhandle); | |
7844 | Qbelow_handle = intern ("below-handle"); | |
7845 | staticpro (&Qbelow_handle); | |
db08707d RS |
7846 | Qup = intern ("up"); |
7847 | staticpro (&Qup); | |
7848 | Qdown = intern ("down"); | |
7849 | staticpro (&Qdown); | |
284f4730 | 7850 | |
cd21b839 | 7851 | Qevent_kind = intern ("event-kind"); |
284f4730 | 7852 | staticpro (&Qevent_kind); |
88cb0656 JB |
7853 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
7854 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
7855 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
7856 | staticpro (&Qevent_symbol_element_mask); | |
7857 | Qmodifier_cache = intern ("modifier-cache"); | |
7858 | staticpro (&Qmodifier_cache); | |
284f4730 | 7859 | |
48e416d4 RS |
7860 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
7861 | staticpro (&Qrecompute_lucid_menubar); | |
7862 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
7863 | staticpro (&Qactivate_menubar_hook); | |
7864 | ||
f4eef8b4 RS |
7865 | Qpolling_period = intern ("polling-period"); |
7866 | staticpro (&Qpolling_period); | |
7867 | ||
284f4730 JB |
7868 | { |
7869 | struct event_head *p; | |
7870 | ||
7871 | for (p = head_table; | |
7872 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
7873 | p++) | |
7874 | { | |
7875 | *p->var = intern (p->name); | |
7876 | staticpro (p->var); | |
7877 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 7878 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
7879 | } |
7880 | } | |
7881 | ||
7b4aedb9 JB |
7882 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
7883 | staticpro (&button_down_location); | |
88cb0656 JB |
7884 | |
7885 | { | |
7886 | int i; | |
7887 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
7888 | ||
7889 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
7890 | for (i = 0; i < len; i++) | |
86e5706b RS |
7891 | if (modifier_names[i]) |
7892 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
7893 | staticpro (&modifier_symbols); |
7894 | } | |
7895 | ||
9deb415a JB |
7896 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
7897 | staticpro (&recent_keys); | |
7898 | ||
6569cc8d | 7899 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 7900 | staticpro (&this_command_keys); |
6569cc8d | 7901 | |
03b4122a BF |
7902 | Qextended_command_history = intern ("extended-command-history"); |
7903 | Fset (Qextended_command_history, Qnil); | |
7904 | staticpro (&Qextended_command_history); | |
7905 | ||
beecf6a1 KH |
7906 | kbd_buffer_frame_or_window |
7907 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7908 | staticpro (&kbd_buffer_frame_or_window); | |
7909 | ||
24597608 RS |
7910 | accent_key_syms = Qnil; |
7911 | staticpro (&accent_key_syms); | |
7912 | ||
284f4730 JB |
7913 | func_key_syms = Qnil; |
7914 | staticpro (&func_key_syms); | |
7915 | ||
7916 | mouse_syms = Qnil; | |
7917 | staticpro (&mouse_syms); | |
7918 | ||
cd21b839 JB |
7919 | unread_switch_frame = Qnil; |
7920 | staticpro (&unread_switch_frame); | |
7921 | ||
a1706c30 | 7922 | defsubr (&Sevent_convert_list); |
284f4730 JB |
7923 | defsubr (&Sread_key_sequence); |
7924 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 7925 | #ifdef HAVE_MOUSE |
284f4730 | 7926 | defsubr (&Strack_mouse); |
2eb6bfbe | 7927 | #endif |
284f4730 JB |
7928 | defsubr (&Sinput_pending_p); |
7929 | defsubr (&Scommand_execute); | |
7930 | defsubr (&Srecent_keys); | |
7931 | defsubr (&Sthis_command_keys); | |
6321824f | 7932 | defsubr (&Sthis_single_command_keys); |
71918b75 | 7933 | defsubr (&Sreset_this_command_lengths); |
284f4730 JB |
7934 | defsubr (&Ssuspend_emacs); |
7935 | defsubr (&Sabort_recursive_edit); | |
7936 | defsubr (&Sexit_recursive_edit); | |
7937 | defsubr (&Srecursion_depth); | |
7938 | defsubr (&Stop_level); | |
7939 | defsubr (&Sdiscard_input); | |
7940 | defsubr (&Sopen_dribble_file); | |
7941 | defsubr (&Sset_input_mode); | |
80645119 | 7942 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
7943 | defsubr (&Sexecute_extended_command); |
7944 | ||
284f4730 | 7945 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
7946 | "Last input event that was part of a command."); |
7947 | ||
186cf719 | 7948 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 7949 | "Last input event that was part of a command."); |
284f4730 | 7950 | |
7d6de002 | 7951 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 7952 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
7953 | Mouse menus give back keys that don't look like mouse events;\n\ |
7954 | this variable holds the actual mouse event that led to the menu,\n\ | |
7955 | so that you can determine whether the command was run by mouse or not."); | |
7956 | ||
284f4730 | 7957 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
7958 | "Last input event."); |
7959 | ||
186cf719 | 7960 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 7961 | "Last input event."); |
284f4730 | 7962 | |
24597608 | 7963 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 7964 | "List of objects to be read as next command input events."); |
284f4730 | 7965 | |
86e5706b RS |
7966 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
7967 | "If not -1, an object to be read as next command input event."); | |
7968 | ||
284f4730 JB |
7969 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
7970 | "Meta-prefix character code. Meta-foo as command input\n\ | |
7971 | turns into this character followed by foo."); | |
18cd2eeb | 7972 | XSETINT (meta_prefix_char, 033); |
284f4730 | 7973 | |
6c7178b9 | 7974 | DEFVAR_KBOARD ("last-command", Vlast_command, |
284f4730 JB |
7975 | "The last command executed. Normally a symbol with a function definition,\n\ |
7976 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
7977 | `this-command' was set to by that command.\n\ |
7978 | \n\ | |
7979 | The value `mode-exit' is special; it means that the previous command\n\ | |
7980 | read an event that told it to exit, and it did so and unread that event.\n\ | |
7981 | In other words, the present command is the event that made the previous\n\ | |
7982 | command exit.\n\ | |
7983 | \n\ | |
7984 | The value `kill-region' is special; it means that the previous command\n\ | |
7985 | was a kill command."); | |
284f4730 JB |
7986 | |
7987 | DEFVAR_LISP ("this-command", &this_command, | |
7988 | "The command now being executed.\n\ | |
7989 | The command can set this variable; whatever is put here\n\ | |
7990 | will be in `last-command' during the following command."); | |
7991 | this_command = Qnil; | |
7992 | ||
7993 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
7994 | "*Number of keyboard input characters between auto-saves.\n\ | |
7995 | Zero means disable autosaving due to number of characters typed."); | |
7996 | auto_save_interval = 300; | |
7997 | ||
7998 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
7999 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
8000 | Zero or nil means disable auto-saving due to idleness.\n\ |
8001 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 8002 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 8003 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
8004 | |
8005 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
8006 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
8007 | echo_keystrokes = 1; | |
8008 | ||
8009 | DEFVAR_INT ("polling-period", &polling_period, | |
8010 | "*Interval between polling for input during Lisp execution.\n\ | |
8011 | The reason for polling is to make C-g work to stop a running program.\n\ | |
8012 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
8013 | Polling is automatically disabled in all other cases."); | |
8014 | polling_period = 2; | |
df0f2ba1 | 8015 | |
564dc952 | 8016 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 8017 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
8018 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
8019 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 8020 | by position only."); |
aab06933 | 8021 | Vdouble_click_time = make_number (500); |
fbcd35bd | 8022 | |
03361bcc RS |
8023 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
8024 | "*Non-nil means inhibit local map menu bar menus."); | |
8025 | inhibit_local_menu_bar_menus = 0; | |
8026 | ||
284f4730 | 8027 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 8028 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
8029 | num_input_keys = 0; |
8030 | ||
4c52b668 KH |
8031 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
8032 | "The frame in which the most recently read event occurred.\n\ | |
8033 | If the last event came from a keyboard macro, this is set to `macro'."); | |
8034 | Vlast_event_frame = Qnil; | |
8035 | ||
7e85b935 | 8036 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
8037 | "Character to recognize as meaning Help.\n\ |
8038 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
8039 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 8040 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 | 8041 | |
ecb7cb34 KH |
8042 | DEFVAR_LISP ("help-event-list", &Vhelp_event_list, |
8043 | "List of input events to recognize as meaning Help.\n\ | |
8044 | These work just like the value of `help-char' (see that)."); | |
8045 | Vhelp_event_list = Qnil; | |
8046 | ||
284f4730 | 8047 | DEFVAR_LISP ("help-form", &Vhelp_form, |
7e85b935 | 8048 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
8049 | If the form returns a string, that string is displayed.\n\ |
8050 | If `help-form' is nil, the help char is not recognized."); | |
8051 | Vhelp_form = Qnil; | |
8052 | ||
7e85b935 RS |
8053 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
8054 | "Command to run when `help-char' character follows a prefix key.\n\ | |
8055 | This command is used only when there is no actual binding\n\ | |
8056 | for that character after that prefix key."); | |
8057 | Vprefix_help_command = Qnil; | |
8058 | ||
284f4730 JB |
8059 | DEFVAR_LISP ("top-level", &Vtop_level, |
8060 | "Form to evaluate when Emacs starts up.\n\ | |
8061 | Useful to set before you dump a modified Emacs."); | |
8062 | Vtop_level = Qnil; | |
8063 | ||
8064 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
f9414d62 | 8065 | "Translate table for keyboard input, or nil.\n\ |
284f4730 | 8066 | Each character is looked up in this string and the contents used instead.\n\ |
f9414d62 RS |
8067 | The value may be a string, a vector, or a char-table.\n\ |
8068 | If it is a string or vector of length N,\n\ | |
8069 | character codes N and up are untranslated.\n\ | |
8070 | In a vector or a char-table, an element which is nil means \"no translation\"."); | |
284f4730 JB |
8071 | Vkeyboard_translate_table = Qnil; |
8072 | ||
8026024c KH |
8073 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
8074 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
8075 | even if the operating system has support for stopping a process."); | |
8076 | cannot_suspend = 0; | |
8077 | ||
284f4730 | 8078 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 8079 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 8080 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
8081 | for elements that have prompt strings.\n\ |
8082 | The menu is displayed on the screen\n\ | |
8083 | if X menus were enabled at configuration\n\ | |
8084 | time and the previous event was a mouse click prefix key.\n\ | |
8085 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
8086 | menu_prompting = 1; |
8087 | ||
8088 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
8089 | "Character to see next line of menu prompt.\n\ | |
8090 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 8091 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
8092 | |
8093 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
8094 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
8095 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
8096 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 8097 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
8098 | all input characters will have the control modifier applied to them.\n\ |
8099 | \n\ | |
9d9f56dd | 8100 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 8101 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 8102 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 8103 | cancels any modification."); |
9fa4395d | 8104 | extra_keyboard_modifiers = 0; |
86e5706b RS |
8105 | |
8106 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
8107 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
8108 | The command loop sets this to nil before each command,\n\ | |
8109 | and tests the value when the command returns.\n\ | |
8110 | Buffer modification stores t in this variable."); | |
8111 | Vdeactivate_mark = Qnil; | |
8112 | ||
b0f2a7bf KH |
8113 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
8114 | "Temporary storage of pre-command-hook or post-command-hook."); | |
8115 | Vcommand_hook_internal = Qnil; | |
8116 | ||
86e5706b | 8117 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 | 8118 | "Normal hook run before each command is executed.\n\ |
59aadc81 | 8119 | Errors running the hook are caught and ignored."); |
86e5706b RS |
8120 | Vpre_command_hook = Qnil; |
8121 | ||
8122 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 | 8123 | "Normal hook run after each command is executed.\n\ |
59aadc81 | 8124 | Errors running the hook are caught and ignored."); |
86e5706b | 8125 | Vpost_command_hook = Qnil; |
48e416d4 | 8126 | |
59aadc81 RS |
8127 | DEFVAR_LISP ("post-command-idle-hook", &Vpost_command_idle_hook, |
8128 | "Normal hook run after each command is executed, if idle.\n\ | |
d4d62e8d RS |
8129 | Errors running the hook are caught and ignored.\n\ |
8130 | This feature is obsolete; use idle timers instead. See `etc/NEWS'."); | |
59aadc81 RS |
8131 | Vpost_command_idle_hook = Qnil; |
8132 | ||
8133 | DEFVAR_INT ("post-command-idle-delay", &post_command_idle_delay, | |
7051b69b | 8134 | "Delay time before running `post-command-idle-hook'.\n\ |
59aadc81 RS |
8135 | This is measured in microseconds."); |
8136 | post_command_idle_delay = 100000; | |
8137 | ||
48e416d4 RS |
8138 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, |
8139 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
8140 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 8141 | |
9f9c0e27 RS |
8142 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
8143 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 8144 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 8145 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 8146 | |
217258d5 KH |
8147 | DEFVAR_KBOARD ("overriding-terminal-local-map", |
8148 | Voverriding_terminal_local_map, | |
8149 | "Keymap that overrides all other local keymaps.\n\ | |
8150 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
8151 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
8152 | ||
9dd3131c RS |
8153 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
8154 | "Keymap that overrides all other local keymaps.\n\ | |
8155 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
8156 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
8157 | Voverriding_local_map = Qnil; | |
8158 | ||
d0a49716 RS |
8159 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
8160 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
8161 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
8162 | and the minor mode maps regardless of `overriding-local-map'."); | |
8163 | Voverriding_local_map_menu_flag = Qnil; | |
8164 | ||
7f07d5ca RS |
8165 | DEFVAR_LISP ("special-event-map", &Vspecial_event_map, |
8166 | "Keymap defining bindings for special events to execute at low level."); | |
8167 | Vspecial_event_map = Fcons (intern ("keymap"), Qnil); | |
8168 | ||
71edead1 | 8169 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
a53c7666 | 8170 | "*Non-nil means generate motion events for mouse motion."); |
80e4aa30 | 8171 | |
7c97ffdc | 8172 | DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist, |
270a208f | 8173 | "Alist of system-specific X windows key symbols.\n\ |
80e4aa30 | 8174 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 8175 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 8176 | and SYMBOL is its name."); |
8a792f3a RS |
8177 | |
8178 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
8179 | "List of deferred actions to be performed at a later time.\n\ | |
8180 | The precise format isn't relevant here; we just check whether it is nil."); | |
8181 | Vdeferred_action_list = Qnil; | |
8182 | ||
8183 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
8184 | "Function to call to handle deferred actions, after each command.\n\ | |
8185 | This function is called with no arguments after each command\n\ | |
8186 | whenever `deferred-action-list' is non-nil."); | |
8187 | Vdeferred_action_function = Qnil; | |
6526ab49 RS |
8188 | |
8189 | DEFVAR_LISP ("suggest-key-bindings", &Vsuggest_key_bindings, | |
8190 | "Non-nil means show the equivalent key-binding when M-x command has one.\n\ | |
8191 | The value can be a length of time to show the message for.\n\ | |
8192 | If the value is non-nil and not a number, we wait 2 seconds."); | |
8193 | Vsuggest_key_bindings = Qt; | |
8bb1c042 | 8194 | |
c04cbc3b | 8195 | DEFVAR_LISP ("timer-list", &Vtimer_list, |
d9d4c147 | 8196 | "List of active absolute time timers in order of increasing time"); |
c04cbc3b | 8197 | Vtimer_list = Qnil; |
d9d4c147 KH |
8198 | |
8199 | DEFVAR_LISP ("timer-idle-list", &Vtimer_idle_list, | |
8200 | "List of active idle-time timers in order of increasing time"); | |
8201 | Vtimer_idle_list = Qnil; | |
284f4730 JB |
8202 | } |
8203 | ||
8204 | keys_of_keyboard () | |
8205 | { | |
8206 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
8207 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
8208 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
8209 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
8210 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
7f07d5ca RS |
8211 | |
8212 | initial_define_lispy_key (Vspecial_event_map, "delete-frame", | |
8213 | "handle-delete-frame"); | |
8214 | initial_define_lispy_key (Vspecial_event_map, "iconify-frame", | |
8215 | "ignore-event"); | |
8216 | initial_define_lispy_key (Vspecial_event_map, "make-frame-visible", | |
8217 | "ignore-event"); | |
284f4730 | 8218 | } |