Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
0d882d52 | 2 | Copyright (C) 1985,86,87,88,89,93,94,95 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 | 24 | #include <stdio.h> |
284f4730 JB |
25 | #include "termchar.h" |
26 | #include "termopts.h" | |
27 | #include "lisp.h" | |
28 | #include "termhooks.h" | |
29 | #include "macros.h" | |
ff11dfa1 | 30 | #include "frame.h" |
284f4730 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "buffer.h" | |
34 | #include "disptab.h" | |
f4255cd1 | 35 | #include "dispextern.h" |
284f4730 | 36 | #include "keyboard.h" |
497ba7a1 | 37 | #include "intervals.h" |
9ac0d9e0 | 38 | #include "blockinput.h" |
284f4730 JB |
39 | #include <setjmp.h> |
40 | #include <errno.h> | |
41 | ||
80e4aa30 RS |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #include <time.h> | |
45 | #else /* not MSDOS */ | |
284f4730 JB |
46 | #ifndef VMS |
47 | #include <sys/ioctl.h> | |
284f4730 | 48 | #endif |
80e4aa30 | 49 | #endif /* not MSDOS */ |
284f4730 | 50 | |
52baf19e | 51 | #include "syssignal.h" |
6ef5b54f | 52 | #include "systty.h" |
52baf19e | 53 | |
c5e3b6c5 RS |
54 | /* This is to get the definitions of the XK_ symbols. */ |
55 | #ifdef HAVE_X_WINDOWS | |
56 | #include "xterm.h" | |
57 | #endif | |
58 | ||
0c2611c5 RS |
59 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
60 | #include "systime.h" | |
61 | ||
52baf19e JB |
62 | extern int errno; |
63 | ||
9ac0d9e0 JB |
64 | /* Variables for blockinput.h: */ |
65 | ||
66 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 67 | int interrupt_input_blocked; |
9ac0d9e0 JB |
68 | |
69 | /* Nonzero means an input interrupt has arrived | |
70 | during the current critical section. */ | |
63927c41 | 71 | int interrupt_input_pending; |
9ac0d9e0 JB |
72 | |
73 | ||
437f6112 RS |
74 | /* File descriptor to use for input. */ |
75 | extern int input_fd; | |
284f4730 | 76 | |
bcce3e02 | 77 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
78 | /* Make all keyboard buffers much bigger when using X windows. */ |
79 | #define KBD_BUFFER_SIZE 4096 | |
80 | #else /* No X-windows, character input */ | |
81 | #define KBD_BUFFER_SIZE 256 | |
82 | #endif /* No X-windows */ | |
83 | ||
84 | /* Following definition copied from eval.c */ | |
85 | ||
86 | struct backtrace | |
87 | { | |
88 | struct backtrace *next; | |
89 | Lisp_Object *function; | |
90 | Lisp_Object *args; /* Points to vector of args. */ | |
91 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
92 | args points to slot holding list of | |
93 | unevalled args */ | |
94 | char evalargs; | |
95 | }; | |
96 | ||
c5fdd383 KH |
97 | #ifdef MULTI_KBOARD |
98 | KBOARD *initial_kboard; | |
99 | KBOARD *current_kboard; | |
100 | KBOARD *all_kboards; | |
1e8bd3da | 101 | int single_kboard; |
6c6083a9 | 102 | #else |
c5fdd383 | 103 | KBOARD the_only_kboard; |
6c6083a9 | 104 | #endif |
612b78ef | 105 | |
284f4730 JB |
106 | /* Non-nil disable property on a command means |
107 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 108 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
109 | |
110 | #define NUM_RECENT_KEYS (100) | |
111 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
112 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 113 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 114 | |
6569cc8d JB |
115 | /* Vector holding the key sequence that invoked the current command. |
116 | It is reused for each command, and it may be longer than the current | |
117 | sequence; this_command_key_count indicates how many elements | |
118 | actually mean something. | |
119 | It's easier to staticpro a single Lisp_Object than an array. */ | |
120 | Lisp_Object this_command_keys; | |
121 | int this_command_key_count; | |
284f4730 JB |
122 | |
123 | extern int minbuf_level; | |
124 | ||
125 | extern struct backtrace *backtrace_list; | |
126 | ||
127 | /* Nonzero means do menu prompting. */ | |
128 | static int menu_prompting; | |
129 | ||
130 | /* Character to see next line of menu prompt. */ | |
131 | static Lisp_Object menu_prompt_more_char; | |
132 | ||
133 | /* For longjmp to where kbd input is being done. */ | |
134 | static jmp_buf getcjmp; | |
135 | ||
136 | /* True while doing kbd input. */ | |
137 | int waiting_for_input; | |
138 | ||
139 | /* True while displaying for echoing. Delays C-g throwing. */ | |
140 | static int echoing; | |
141 | ||
03361bcc RS |
142 | /* Nonzero means disregard local maps for the menu bar. */ |
143 | static int inhibit_local_menu_bar_menus; | |
144 | ||
80e4aa30 | 145 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
146 | int immediate_quit; |
147 | ||
148 | /* Character to recognize as the help char. */ | |
7e85b935 | 149 | Lisp_Object Vhelp_char; |
284f4730 | 150 | |
ecb7cb34 KH |
151 | /* List of other event types to recognize as meaning "help". */ |
152 | Lisp_Object Vhelp_event_list; | |
153 | ||
284f4730 JB |
154 | /* Form to execute when help char is typed. */ |
155 | Lisp_Object Vhelp_form; | |
156 | ||
7e85b935 RS |
157 | /* Command to run when the help character follows a prefix key. */ |
158 | Lisp_Object Vprefix_help_command; | |
159 | ||
9f9c0e27 RS |
160 | /* List of items that should move to the end of the menu bar. */ |
161 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 162 | |
284f4730 JB |
163 | /* Character that causes a quit. Normally C-g. |
164 | ||
165 | If we are running on an ordinary terminal, this must be an ordinary | |
166 | ASCII char, since we want to make it our interrupt character. | |
167 | ||
168 | If we are not running on an ordinary terminal, it still needs to be | |
169 | an ordinary ASCII char. This character needs to be recognized in | |
170 | the input interrupt handler. At this point, the keystroke is | |
171 | represented as a struct input_event, while the desired quit | |
172 | character is specified as a lispy event. The mapping from struct | |
173 | input_events to lispy events cannot run in an interrupt handler, | |
174 | and the reverse mapping is difficult for anything but ASCII | |
175 | keystrokes. | |
176 | ||
177 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
178 | ASCII character. */ | |
179 | int quit_char; | |
180 | ||
181 | extern Lisp_Object current_global_map; | |
182 | extern int minibuf_level; | |
183 | ||
9dd3131c RS |
184 | /* If non-nil, this is a map that overrides all other local maps. */ |
185 | Lisp_Object Voverriding_local_map; | |
186 | ||
d0a49716 RS |
187 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
188 | Lisp_Object Voverriding_local_map_menu_flag; | |
189 | ||
284f4730 JB |
190 | /* Current depth in recursive edits. */ |
191 | int command_loop_level; | |
192 | ||
193 | /* Total number of times command_loop has read a key sequence. */ | |
194 | int num_input_keys; | |
195 | ||
196 | /* Last input character read as a command. */ | |
197 | Lisp_Object last_command_char; | |
198 | ||
7d6de002 RS |
199 | /* Last input character read as a command, not counting menus |
200 | reached by the mouse. */ | |
201 | Lisp_Object last_nonmenu_event; | |
202 | ||
284f4730 JB |
203 | /* Last input character read for any purpose. */ |
204 | Lisp_Object last_input_char; | |
205 | ||
dbc4e1c1 | 206 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 207 | Lisp_Object Vunread_command_events; |
284f4730 | 208 | |
86e5706b RS |
209 | /* If not -1, an event to be read as subsequent command input. */ |
210 | int unread_command_char; | |
211 | ||
cd21b839 JB |
212 | /* If not Qnil, this is a switch-frame event which we decided to put |
213 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 214 | next command input, after any unread_command_events. |
8f805655 JB |
215 | |
216 | read_key_sequence uses this to delay switch-frame events until the | |
217 | end of the key sequence; Fread_char uses it to put off switch-frame | |
218 | events until a non-ASCII event is acceptable as input. */ | |
219 | Lisp_Object unread_switch_frame; | |
cd21b839 | 220 | |
9fa4395d RS |
221 | /* A mask of extra modifier bits to put into every keyboard char. */ |
222 | int extra_keyboard_modifiers; | |
223 | ||
284f4730 JB |
224 | /* Char to use as prefix when a meta character is typed in. |
225 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
226 | ||
227 | Lisp_Object meta_prefix_char; | |
228 | ||
229 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
230 | static int last_non_minibuf_size; | |
231 | ||
06ef7355 | 232 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
233 | static Lisp_Object Vauto_save_timeout; |
234 | ||
235 | /* Total number of times read_char has returned. */ | |
236 | int num_input_chars; | |
237 | ||
51172b6d RS |
238 | /* Total number of times read_char has returned, outside of macros. */ |
239 | int num_nonmacro_input_chars; | |
240 | ||
284f4730 JB |
241 | /* Auto-save automatically when this many characters have been typed |
242 | since the last time. */ | |
243 | ||
244 | static int auto_save_interval; | |
245 | ||
51172b6d | 246 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
247 | |
248 | int last_auto_save; | |
249 | ||
284f4730 | 250 | /* The command being executed by the command loop. |
6c7178b9 KH |
251 | Commands may set this, and the value set will be copied into |
252 | current_kboard->Vlast_command instead of the actual command. */ | |
284f4730 JB |
253 | Lisp_Object this_command; |
254 | ||
b453f72e KH |
255 | /* The value of point when the last command was executed. */ |
256 | int last_point_position; | |
257 | ||
047688cb RS |
258 | /* The buffer that was current when the last command was started. */ |
259 | Lisp_Object last_point_position_buffer; | |
260 | ||
4c52b668 KH |
261 | #ifdef MULTI_FRAME |
262 | /* The frame in which the last input event occurred, or Qmacro if the | |
263 | last event came from a macro. We use this to determine when to | |
264 | generate switch-frame events. This may be cleared by functions | |
265 | like Fselect_frame, to make sure that a switch-frame event is | |
266 | generated by the next character. */ | |
267 | Lisp_Object internal_last_event_frame; | |
268 | #endif | |
269 | ||
270 | /* A user-visible version of the above, intended to allow users to | |
271 | figure out where the last event came from, if the event doesn't | |
272 | carry that information itself (i.e. if it was a character). */ | |
273 | Lisp_Object Vlast_event_frame; | |
274 | ||
1113d9db JB |
275 | /* The timestamp of the last input event we received from the X server. |
276 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
277 | unsigned long last_event_timestamp; |
278 | ||
279 | Lisp_Object Qself_insert_command; | |
280 | Lisp_Object Qforward_char; | |
281 | Lisp_Object Qbackward_char; | |
e58aa385 | 282 | Lisp_Object Qundefined; |
284f4730 JB |
283 | |
284 | /* read_key_sequence stores here the command definition of the | |
285 | key sequence that it reads. */ | |
286 | Lisp_Object read_key_sequence_cmd; | |
287 | ||
288 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
289 | Lisp_Object Vtop_level; | |
290 | ||
291 | /* User-supplied string to translate input characters through. */ | |
292 | Lisp_Object Vkeyboard_translate_table; | |
293 | ||
294 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
295 | extern Lisp_Object Vfunction_key_map; | |
296 | ||
a612e298 RS |
297 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
298 | Lisp_Object Vkey_translation_map; | |
299 | ||
86e5706b RS |
300 | /* Non-nil means deactivate the mark at end of this command. */ |
301 | Lisp_Object Vdeactivate_mark; | |
302 | ||
48e416d4 RS |
303 | /* Menu bar specified in Lucid Emacs fashion. */ |
304 | ||
305 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
306 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
307 | ||
86e5706b RS |
308 | /* Hooks to run before and after each command. */ |
309 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
310 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 311 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 312 | |
8a792f3a RS |
313 | /* List of deferred actions to be performed at a later time. |
314 | The precise format isn't relevant here; we just check whether it is nil. */ | |
315 | Lisp_Object Vdeferred_action_list; | |
316 | ||
317 | /* Function to call to handle deferred actions, when there are any. */ | |
318 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 319 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 320 | |
284f4730 JB |
321 | /* File in which we write all commands we read. */ |
322 | FILE *dribble; | |
323 | ||
324 | /* Nonzero if input is available. */ | |
325 | int input_pending; | |
326 | ||
b04904fb RS |
327 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
328 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
329 | ||
284f4730 JB |
330 | int meta_key; |
331 | ||
332 | extern char *pending_malloc_warning; | |
333 | ||
beecf6a1 KH |
334 | /* Circular buffer for pre-read keyboard input. */ |
335 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
336 | ||
337 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
338 | ||
339 | The interrupt-level event handlers will never enqueue an event on a | |
340 | frame which is not in Vframe_list, and once an event is dequeued, | |
341 | internal_last_event_frame or the event itself points to the frame. | |
342 | So that's all fine. | |
343 | ||
344 | But while the event is sitting in the queue, it's completely | |
345 | unprotected. Suppose the user types one command which will run for | |
346 | a while and then delete a frame, and then types another event at | |
347 | the frame that will be deleted, before the command gets around to | |
348 | it. Suppose there are no references to this frame elsewhere in | |
349 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
350 | have an event referring to a freed frame, which will crash Emacs | |
351 | when it is dequeued. | |
352 | ||
353 | Similar things happen when an event on a scroll bar is enqueued; the | |
354 | window may be deleted while the event is in the queue. | |
355 | ||
356 | So, we use this vector to protect the frame_or_window field in the | |
357 | event queue. That way, they'll be dequeued as dead frames or | |
358 | windows, but still valid lisp objects. | |
359 | ||
360 | If kbd_buffer[i].kind != no_event, then | |
361 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
362 | == kbd_buffer[i].frame_or_window. */ | |
363 | static Lisp_Object kbd_buffer_frame_or_window; | |
364 | ||
365 | /* Pointer to next available character in kbd_buffer. | |
366 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
367 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
368 | next available char is in kbd_buffer[0]. */ | |
369 | static struct input_event *kbd_fetch_ptr; | |
370 | ||
371 | /* Pointer to next place to store character in kbd_buffer. This | |
372 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
373 | character should go in kbd_buffer[0]. */ | |
374 | static volatile struct input_event *kbd_store_ptr; | |
375 | ||
376 | /* The above pair of variables forms a "queue empty" flag. When we | |
377 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
378 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
379 | there is input available iff the two pointers are not equal. | |
380 | ||
381 | Why not just have a flag set and cleared by the enqueuing and | |
382 | dequeuing functions? Such a flag could be screwed up by interrupts | |
383 | at inopportune times. */ | |
384 | ||
a9d77f1f RS |
385 | /* If this flag is a frame, we check mouse_moved to see when the |
386 | mouse moves, and motion events will appear in the input stream. | |
387 | Otherwise, mouse motion is ignored. */ | |
388 | static Lisp_Object do_mouse_tracking; | |
284f4730 | 389 | |
a53c7666 | 390 | #ifdef HAVE_MOUSE |
284f4730 JB |
391 | /* The window system handling code should set this if the mouse has |
392 | moved since the last call to the mouse_position_hook. Calling that | |
393 | hook should clear this. Code assumes that if this is set, it can | |
394 | call mouse_position_hook to get the promised position, so don't set | |
395 | it unless you're prepared to substantiate the claim! */ | |
396 | int mouse_moved; | |
1e8bd3da | 397 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
398 | |
399 | /* Symbols to head events. */ | |
400 | Lisp_Object Qmouse_movement; | |
3c370943 | 401 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 402 | Lisp_Object Qswitch_frame; |
bbdc2092 | 403 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
404 | Lisp_Object Qiconify_frame; |
405 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 406 | |
284f4730 JB |
407 | /* Symbols to denote kinds of events. */ |
408 | Lisp_Object Qfunction_key; | |
409 | Lisp_Object Qmouse_click; | |
410 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
411 | |
412 | /* Properties of event headers. */ | |
413 | Lisp_Object Qevent_kind; | |
88cb0656 | 414 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 415 | |
598a9fa7 JB |
416 | Lisp_Object Qmenu_enable; |
417 | ||
0a7f1fc0 JB |
418 | /* An event header symbol HEAD may have a property named |
419 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
420 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
421 | mask of modifiers applied to it. If present, this is used to help | |
422 | speed up parse_modifiers. */ | |
423 | Lisp_Object Qevent_symbol_element_mask; | |
424 | ||
425 | /* An unmodified event header BASE may have a property named | |
426 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
427 | modified versions of BASE. If present, this helps speed up | |
428 | apply_modifiers. */ | |
429 | Lisp_Object Qmodifier_cache; | |
430 | ||
5ec75a55 | 431 | /* Symbols to use for parts of windows. */ |
284f4730 | 432 | Lisp_Object Qmode_line; |
e5d77022 | 433 | Lisp_Object Qvertical_line; |
3c370943 | 434 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
435 | Lisp_Object Qmenu_bar; |
436 | ||
437 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 438 | |
f4255cd1 JB |
439 | Lisp_Object recursive_edit_unwind (), command_loop (); |
440 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 441 | Lisp_Object Qextended_command_history; |
284f4730 | 442 | |
2c834fb3 KH |
443 | extern char *x_get_keysym_name (); |
444 | ||
f4eef8b4 RS |
445 | Lisp_Object Qpolling_period; |
446 | ||
a9f16aa9 KH |
447 | extern Lisp_Object Vprint_level, Vprint_length; |
448 | ||
ffd56f97 JB |
449 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
450 | happens. */ | |
451 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
452 | |
453 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
454 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
455 | int interrupt_input; | |
456 | ||
457 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
458 | int interrupts_deferred; | |
459 | ||
460 | /* nonzero means use ^S/^Q for flow control. */ | |
461 | int flow_control; | |
462 | ||
284f4730 JB |
463 | /* Allow m- file to inhibit use of FIONREAD. */ |
464 | #ifdef BROKEN_FIONREAD | |
465 | #undef FIONREAD | |
466 | #endif | |
467 | ||
468 | /* We are unable to use interrupts if FIONREAD is not available, | |
469 | so flush SIGIO so we won't try. */ | |
470 | #ifndef FIONREAD | |
471 | #ifdef SIGIO | |
472 | #undef SIGIO | |
473 | #endif | |
474 | #endif | |
475 | ||
34f04431 RS |
476 | /* If we support X Windows, turn on the code to poll periodically |
477 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 478 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
479 | #define POLL_FOR_INPUT |
480 | #endif | |
284f4730 JB |
481 | \f |
482 | /* Global variable declarations. */ | |
483 | ||
484 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
485 | void (*keyboard_init_hook) (); | |
486 | ||
487 | static int read_avail_input (); | |
488 | static void get_input_pending (); | |
9fd7d808 | 489 | static int readable_events (); |
8150596a RS |
490 | static Lisp_Object read_char_x_menu_prompt (); |
491 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 | 492 | static Lisp_Object make_lispy_event (); |
514354e9 | 493 | #ifdef HAVE_MOUSE |
a612e298 | 494 | static Lisp_Object make_lispy_movement (); |
514354e9 | 495 | #endif |
a612e298 RS |
496 | static Lisp_Object modify_event_symbol (); |
497 | static Lisp_Object make_lispy_switch_frame (); | |
3d31316f | 498 | static int parse_solitary_modifier (); |
284f4730 JB |
499 | |
500 | /* > 0 if we are to echo keystrokes. */ | |
501 | static int echo_keystrokes; | |
502 | ||
8026024c KH |
503 | /* Nonzero means don't try to suspend even if the operating system seems |
504 | to support it. */ | |
505 | static int cannot_suspend; | |
506 | ||
284f4730 JB |
507 | #define min(a,b) ((a)<(b)?(a):(b)) |
508 | #define max(a,b) ((a)>(b)?(a):(b)) | |
509 | ||
510 | /* Install the string STR as the beginning of the string of echoing, | |
511 | so that it serves as a prompt for the next character. | |
512 | Also start echoing. */ | |
513 | ||
514 | echo_prompt (str) | |
515 | char *str; | |
516 | { | |
517 | int len = strlen (str); | |
7a80a6f6 | 518 | |
ba72822c KH |
519 | if (len > ECHOBUFSIZE - 4) |
520 | len = ECHOBUFSIZE - 4; | |
c5fdd383 KH |
521 | bcopy (str, current_kboard->echobuf, len); |
522 | current_kboard->echoptr = current_kboard->echobuf + len; | |
523 | *current_kboard->echoptr = '\0'; | |
284f4730 | 524 | |
c5fdd383 | 525 | current_kboard->echo_after_prompt = len; |
7a80a6f6 | 526 | |
284f4730 JB |
527 | echo (); |
528 | } | |
529 | ||
df0f2ba1 | 530 | /* Add C to the echo string, if echoing is going on. |
284f4730 JB |
531 | C can be a character, which is printed prettily ("M-C-x" and all that |
532 | jazz), or a symbol, whose name is printed. */ | |
533 | ||
534 | echo_char (c) | |
535 | Lisp_Object c; | |
536 | { | |
537 | extern char *push_key_description (); | |
538 | ||
c5fdd383 | 539 | if (current_kboard->immediate_echo) |
284f4730 | 540 | { |
c5fdd383 | 541 | char *ptr = current_kboard->echoptr; |
df0f2ba1 | 542 | |
c5fdd383 | 543 | if (ptr != current_kboard->echobuf) |
284f4730 JB |
544 | *ptr++ = ' '; |
545 | ||
546 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 547 | c = EVENT_HEAD (c); |
284f4730 | 548 | |
8c18cbfb | 549 | if (INTEGERP (c)) |
284f4730 | 550 | { |
c5fdd383 | 551 | if (ptr - current_kboard->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
552 | return; |
553 | ||
cb5df6ae | 554 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 555 | } |
8c18cbfb | 556 | else if (SYMBOLP (c)) |
284f4730 JB |
557 | { |
558 | struct Lisp_String *name = XSYMBOL (c)->name; | |
c5fdd383 | 559 | if ((ptr - current_kboard->echobuf) + name->size + 4 > ECHOBUFSIZE) |
284f4730 JB |
560 | return; |
561 | bcopy (name->data, ptr, name->size); | |
562 | ptr += name->size; | |
563 | } | |
564 | ||
c5fdd383 | 565 | if (current_kboard->echoptr == current_kboard->echobuf |
ecb7cb34 | 566 | && help_char_p (c)) |
284f4730 JB |
567 | { |
568 | strcpy (ptr, " (Type ? for further options)"); | |
569 | ptr += strlen (ptr); | |
570 | } | |
571 | ||
572 | *ptr = 0; | |
c5fdd383 | 573 | current_kboard->echoptr = ptr; |
284f4730 JB |
574 | |
575 | echo (); | |
576 | } | |
577 | } | |
578 | ||
579 | /* Temporarily add a dash to the end of the echo string if it's not | |
580 | empty, so that it serves as a mini-prompt for the very next character. */ | |
581 | ||
582 | echo_dash () | |
583 | { | |
c5fdd383 KH |
584 | if (!current_kboard->immediate_echo |
585 | && current_kboard->echoptr == current_kboard->echobuf) | |
284f4730 | 586 | return; |
7a80a6f6 | 587 | /* Do nothing if we just printed a prompt. */ |
c5fdd383 KH |
588 | if (current_kboard->echo_after_prompt |
589 | == current_kboard->echoptr - current_kboard->echobuf) | |
7a80a6f6 | 590 | return; |
4bafa972 | 591 | /* Do nothing if not echoing at all. */ |
c5fdd383 | 592 | if (current_kboard->echoptr == 0) |
4bafa972 | 593 | return; |
284f4730 JB |
594 | |
595 | /* Put a dash at the end of the buffer temporarily, | |
596 | but make it go away when the next character is added. */ | |
c5fdd383 KH |
597 | current_kboard->echoptr[0] = '-'; |
598 | current_kboard->echoptr[1] = 0; | |
284f4730 JB |
599 | |
600 | echo (); | |
601 | } | |
602 | ||
603 | /* Display the current echo string, and begin echoing if not already | |
604 | doing so. */ | |
605 | ||
606 | echo () | |
607 | { | |
c5fdd383 | 608 | if (!current_kboard->immediate_echo) |
284f4730 JB |
609 | { |
610 | int i; | |
c5fdd383 | 611 | current_kboard->immediate_echo = 1; |
284f4730 JB |
612 | |
613 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
614 | { |
615 | Lisp_Object c; | |
616 | c = XVECTOR (this_command_keys)->contents[i]; | |
617 | if (! (EVENT_HAS_PARAMETERS (c) | |
618 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
619 | echo_char (c); | |
620 | } | |
284f4730 JB |
621 | echo_dash (); |
622 | } | |
623 | ||
624 | echoing = 1; | |
c5fdd383 | 625 | message1_nolog (current_kboard->echobuf); |
284f4730 JB |
626 | echoing = 0; |
627 | ||
628 | if (waiting_for_input && !NILP (Vquit_flag)) | |
629 | quit_throw_to_read_char (); | |
630 | } | |
631 | ||
632 | /* Turn off echoing, for the start of a new command. */ | |
633 | ||
634 | cancel_echoing () | |
635 | { | |
c5fdd383 KH |
636 | current_kboard->immediate_echo = 0; |
637 | current_kboard->echoptr = current_kboard->echobuf; | |
638 | current_kboard->echo_after_prompt = -1; | |
284f4730 JB |
639 | } |
640 | ||
641 | /* Return the length of the current echo string. */ | |
642 | ||
643 | static int | |
644 | echo_length () | |
645 | { | |
c5fdd383 | 646 | return current_kboard->echoptr - current_kboard->echobuf; |
284f4730 JB |
647 | } |
648 | ||
649 | /* Truncate the current echo message to its first LEN chars. | |
650 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 651 | switches frames while entering a key sequence. */ |
284f4730 JB |
652 | |
653 | static void | |
654 | echo_truncate (len) | |
655 | int len; | |
656 | { | |
c5fdd383 KH |
657 | current_kboard->echobuf[len] = '\0'; |
658 | current_kboard->echoptr = current_kboard->echobuf + len; | |
40932d1a | 659 | truncate_echo_area (len); |
284f4730 JB |
660 | } |
661 | ||
662 | \f | |
663 | /* Functions for manipulating this_command_keys. */ | |
664 | static void | |
665 | add_command_key (key) | |
666 | Lisp_Object key; | |
667 | { | |
6569cc8d JB |
668 | int size = XVECTOR (this_command_keys)->size; |
669 | ||
670 | if (this_command_key_count >= size) | |
284f4730 | 671 | { |
9b8eb840 | 672 | Lisp_Object new_keys; |
6569cc8d | 673 | |
9b8eb840 | 674 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
675 | bcopy (XVECTOR (this_command_keys)->contents, |
676 | XVECTOR (new_keys)->contents, | |
8f805655 | 677 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
678 | |
679 | this_command_keys = new_keys; | |
284f4730 | 680 | } |
6569cc8d JB |
681 | |
682 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
683 | } |
684 | \f | |
685 | Lisp_Object | |
686 | recursive_edit_1 () | |
687 | { | |
688 | int count = specpdl_ptr - specpdl; | |
689 | Lisp_Object val; | |
690 | ||
691 | if (command_loop_level > 0) | |
692 | { | |
693 | specbind (Qstandard_output, Qt); | |
694 | specbind (Qstandard_input, Qt); | |
695 | } | |
696 | ||
697 | val = command_loop (); | |
698 | if (EQ (val, Qt)) | |
699 | Fsignal (Qquit, Qnil); | |
700 | ||
cb5df6ae | 701 | return unbind_to (count, Qnil); |
284f4730 JB |
702 | } |
703 | ||
704 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 705 | |
284f4730 JB |
706 | record_auto_save () |
707 | { | |
51172b6d | 708 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 709 | } |
5846638c RS |
710 | |
711 | /* Make an auto save happen as soon as possible at command level. */ | |
712 | ||
713 | force_auto_save_soon () | |
714 | { | |
715 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
716 | |
717 | record_asynch_buffer_change (); | |
5846638c | 718 | } |
284f4730 | 719 | \f |
284f4730 JB |
720 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
721 | "Invoke the editor command loop recursively.\n\ | |
722 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
723 | that tells this function to return.\n\ | |
724 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
725 | This function is called by the editor initialization to begin editing.") | |
726 | () | |
727 | { | |
728 | int count = specpdl_ptr - specpdl; | |
729 | Lisp_Object val; | |
730 | ||
731 | command_loop_level++; | |
732 | update_mode_lines = 1; | |
733 | ||
734 | record_unwind_protect (recursive_edit_unwind, | |
735 | (command_loop_level | |
736 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
737 | ? Fcurrent_buffer () | |
738 | : Qnil); | |
739 | recursive_edit_1 (); | |
740 | return unbind_to (count, Qnil); | |
741 | } | |
742 | ||
743 | Lisp_Object | |
744 | recursive_edit_unwind (buffer) | |
745 | Lisp_Object buffer; | |
746 | { | |
747 | if (!NILP (buffer)) | |
748 | Fset_buffer (buffer); | |
749 | ||
750 | command_loop_level--; | |
751 | update_mode_lines = 1; | |
752 | return Qnil; | |
753 | } | |
754 | \f | |
604ccd1d | 755 | static void |
1e8bd3da | 756 | any_kboard_state () |
604ccd1d | 757 | { |
1e8bd3da RS |
758 | #ifdef MULTI_KBOARD |
759 | #if 0 /* Theory: if there's anything in Vunread_command_events, | |
760 | it will right away be read by read_key_sequence, | |
761 | and then if we do switch KBOARDS, it will go into the side | |
762 | queue then. So we don't need to do anything special here -- rms. */ | |
604ccd1d | 763 | if (CONSP (Vunread_command_events)) |
4524b161 | 764 | { |
c5fdd383 KH |
765 | current_kboard->kbd_queue |
766 | = nconc2 (Vunread_command_events, current_kboard->kbd_queue); | |
767 | current_kboard->kbd_queue_has_data = 1; | |
4524b161 | 768 | } |
604ccd1d | 769 | Vunread_command_events = Qnil; |
1e8bd3da RS |
770 | #endif |
771 | single_kboard = 0; | |
772 | #endif | |
604ccd1d | 773 | } |
1e8bd3da RS |
774 | |
775 | /* Switch to the single-kboard state, making current_kboard | |
776 | the only KBOARD from which further input is accepted. */ | |
777 | ||
778 | void | |
779 | single_kboard_state () | |
780 | { | |
781 | #ifdef MULTI_KBOARD | |
782 | single_kboard = 1; | |
604ccd1d | 783 | #endif |
1e8bd3da RS |
784 | } |
785 | ||
786 | /* Maintain a stack of kboards, so other parts of Emacs | |
787 | can switch temporarily to the kboard of a given frame | |
788 | and then revert to the previous status. */ | |
789 | ||
790 | struct kboard_stack | |
791 | { | |
792 | KBOARD *kboard; | |
793 | struct kboard_stack *next; | |
794 | }; | |
795 | ||
796 | static struct kboard_stack *kboard_stack; | |
797 | ||
798 | void | |
799 | push_frame_kboard (f) | |
800 | FRAME_PTR f; | |
801 | { | |
ab48365b | 802 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
803 | struct kboard_stack *p |
804 | = (struct kboard_stack *) xmalloc (sizeof (struct kboard_stack)); | |
805 | ||
806 | p->next = kboard_stack; | |
807 | p->kboard = current_kboard; | |
808 | kboard_stack = p; | |
809 | ||
810 | current_kboard = FRAME_KBOARD (f); | |
ab48365b | 811 | #endif |
1e8bd3da RS |
812 | } |
813 | ||
814 | void | |
815 | pop_frame_kboard () | |
816 | { | |
ab48365b | 817 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
818 | struct kboard_stack *p = kboard_stack; |
819 | current_kboard = p->kboard; | |
820 | kboard_stack = p->next; | |
821 | xfree (p); | |
ab48365b | 822 | #endif |
1e8bd3da RS |
823 | } |
824 | \f | |
825 | /* Handle errors that are not handled at inner levels | |
826 | by printing an error message and returning to the editor command loop. */ | |
604ccd1d | 827 | |
284f4730 JB |
828 | Lisp_Object |
829 | cmd_error (data) | |
830 | Lisp_Object data; | |
a1341f75 | 831 | { |
a9f16aa9 KH |
832 | Lisp_Object old_level, old_length; |
833 | ||
a1341f75 RS |
834 | Vstandard_output = Qt; |
835 | Vstandard_input = Qt; | |
836 | Vexecuting_macro = Qnil; | |
d8bcf58e | 837 | current_kboard->Vprefix_arg = Qnil; |
df0f2ba1 | 838 | cancel_echoing (); |
a9f16aa9 KH |
839 | |
840 | /* Avoid unquittable loop if data contains a circular list. */ | |
841 | old_level = Vprint_level; | |
842 | old_length = Vprint_length; | |
843 | XSETFASTINT(Vprint_level, 10); | |
844 | XSETFASTINT(Vprint_length, 10); | |
6de34814 | 845 | cmd_error_internal (data, NULL); |
a9f16aa9 KH |
846 | Vprint_level = old_level; |
847 | Vprint_length = old_length; | |
a1341f75 RS |
848 | |
849 | Vquit_flag = Qnil; | |
850 | ||
851 | Vinhibit_quit = Qnil; | |
c5fdd383 | 852 | #ifdef MULTI_KBOARD |
1e8bd3da | 853 | any_kboard_state (); |
ff4b06d3 | 854 | #endif |
a1341f75 RS |
855 | |
856 | return make_number (0); | |
857 | } | |
858 | ||
859 | cmd_error_internal (data, context) | |
860 | Lisp_Object data; | |
861 | char *context; | |
284f4730 JB |
862 | { |
863 | Lisp_Object errmsg, tail, errname, file_error; | |
864 | Lisp_Object stream; | |
865 | struct gcpro gcpro1; | |
866 | int i; | |
867 | ||
868 | Vquit_flag = Qnil; | |
869 | Vinhibit_quit = Qt; | |
284f4730 JB |
870 | echo_area_glyphs = 0; |
871 | ||
ff11dfa1 | 872 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
873 | yet, or we're not interactive, it's best to dump this message out |
874 | to stderr and exit. */ | |
ff11dfa1 | 875 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
876 | || noninteractive) |
877 | stream = Qexternal_debugging_output; | |
878 | else | |
879 | { | |
880 | Fdiscard_input (); | |
881 | bitch_at_user (); | |
882 | stream = Qt; | |
883 | } | |
884 | ||
a1341f75 RS |
885 | if (context != 0) |
886 | write_string_1 (context, -1, stream); | |
887 | ||
284f4730 JB |
888 | errname = Fcar (data); |
889 | ||
890 | if (EQ (errname, Qerror)) | |
891 | { | |
892 | data = Fcdr (data); | |
893 | if (!CONSP (data)) data = Qnil; | |
894 | errmsg = Fcar (data); | |
895 | file_error = Qnil; | |
896 | } | |
897 | else | |
898 | { | |
899 | errmsg = Fget (errname, Qerror_message); | |
900 | file_error = Fmemq (Qfile_error, | |
901 | Fget (errname, Qerror_conditions)); | |
902 | } | |
903 | ||
904 | /* Print an error message including the data items. | |
905 | This is done by printing it into a scratch buffer | |
906 | and then making a copy of the text in the buffer. */ | |
907 | ||
908 | if (!CONSP (data)) data = Qnil; | |
909 | tail = Fcdr (data); | |
910 | GCPRO1 (tail); | |
911 | ||
912 | /* For file-error, make error message by concatenating | |
913 | all the data items. They are all strings. */ | |
914 | if (!NILP (file_error) && !NILP (tail)) | |
915 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
916 | ||
8c18cbfb | 917 | if (STRINGP (errmsg)) |
284f4730 JB |
918 | Fprinc (errmsg, stream); |
919 | else | |
920 | write_string_1 ("peculiar error", -1, stream); | |
921 | ||
922 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
923 | { | |
924 | write_string_1 (i ? ", " : ": ", 2, stream); | |
925 | if (!NILP (file_error)) | |
926 | Fprinc (Fcar (tail), stream); | |
927 | else | |
928 | Fprin1 (Fcar (tail), stream); | |
929 | } | |
930 | UNGCPRO; | |
931 | ||
ff11dfa1 | 932 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 933 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 934 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
935 | || noninteractive) |
936 | { | |
937 | Fterpri (stream); | |
938 | Fkill_emacs (make_number (-1)); | |
939 | } | |
284f4730 JB |
940 | } |
941 | \f | |
942 | Lisp_Object command_loop_1 (); | |
943 | Lisp_Object command_loop_2 (); | |
944 | Lisp_Object top_level_1 (); | |
945 | ||
946 | /* Entry to editor-command-loop. | |
947 | This level has the catches for exiting/returning to editor command loop. | |
948 | It returns nil to exit recursive edit, t to abort it. */ | |
949 | ||
950 | Lisp_Object | |
951 | command_loop () | |
952 | { | |
953 | if (command_loop_level > 0 || minibuf_level > 0) | |
954 | { | |
955 | return internal_catch (Qexit, command_loop_2, Qnil); | |
956 | } | |
957 | else | |
958 | while (1) | |
959 | { | |
960 | internal_catch (Qtop_level, top_level_1, Qnil); | |
961 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
df0f2ba1 | 962 | |
284f4730 JB |
963 | /* End of file in -batch run causes exit here. */ |
964 | if (noninteractive) | |
965 | Fkill_emacs (Qt); | |
966 | } | |
967 | } | |
968 | ||
969 | /* Here we catch errors in execution of commands within the | |
970 | editing loop, and reenter the editing loop. | |
971 | When there is an error, cmd_error runs and returns a non-nil | |
972 | value to us. A value of nil means that cmd_loop_1 itself | |
973 | returned due to end of file (or end of kbd macro). */ | |
974 | ||
975 | Lisp_Object | |
976 | command_loop_2 () | |
977 | { | |
978 | register Lisp_Object val; | |
979 | ||
980 | do | |
981 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
982 | while (!NILP (val)); | |
983 | ||
984 | return Qnil; | |
985 | } | |
986 | ||
987 | Lisp_Object | |
988 | top_level_2 () | |
989 | { | |
990 | return Feval (Vtop_level); | |
991 | } | |
992 | ||
993 | Lisp_Object | |
994 | top_level_1 () | |
995 | { | |
996 | /* On entry to the outer level, run the startup file */ | |
997 | if (!NILP (Vtop_level)) | |
998 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
999 | else if (!NILP (Vpurify_flag)) | |
1000 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
1001 | else | |
1002 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
1003 | return Qnil; | |
1004 | } | |
1005 | ||
1006 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
1007 | "Exit all recursive editing levels.") | |
1008 | () | |
1009 | { | |
1010 | Fthrow (Qtop_level, Qnil); | |
1011 | } | |
1012 | ||
1013 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
1014 | "Exit from the innermost recursive edit or minibuffer.") | |
1015 | () | |
1016 | { | |
1017 | if (command_loop_level > 0 || minibuf_level > 0) | |
1018 | Fthrow (Qexit, Qnil); | |
1019 | ||
1020 | error ("No recursive edit is in progress"); | |
1021 | } | |
1022 | ||
1023 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
1024 | "Abort the command that requested this recursive edit or minibuffer input.") | |
1025 | () | |
1026 | { | |
1027 | if (command_loop_level > 0 || minibuf_level > 0) | |
1028 | Fthrow (Qexit, Qt); | |
1029 | ||
1030 | error ("No recursive edit is in progress"); | |
1031 | } | |
1032 | \f | |
1033 | /* This is the actual command reading loop, | |
1034 | sans error-handling encapsulation. */ | |
1035 | ||
1036 | Lisp_Object Fcommand_execute (); | |
1037 | static int read_key_sequence (); | |
1c9784c9 | 1038 | static void safe_run_hooks (); |
284f4730 JB |
1039 | |
1040 | Lisp_Object | |
1041 | command_loop_1 () | |
1042 | { | |
48e416d4 | 1043 | Lisp_Object cmd, tem; |
284f4730 JB |
1044 | int lose; |
1045 | int nonundocount; | |
1046 | Lisp_Object keybuf[30]; | |
1047 | int i; | |
1048 | int no_redisplay; | |
1049 | int no_direct; | |
86e5706b RS |
1050 | int prev_modiff; |
1051 | struct buffer *prev_buffer; | |
c5fdd383 | 1052 | #ifdef MULTI_KBOARD |
1e8bd3da | 1053 | int was_locked = single_kboard; |
bded54dd | 1054 | #endif |
284f4730 | 1055 | |
d9b641bb | 1056 | current_kboard->Vprefix_arg = Qnil; |
86e5706b | 1057 | Vdeactivate_mark = Qnil; |
284f4730 | 1058 | waiting_for_input = 0; |
df0f2ba1 | 1059 | cancel_echoing (); |
284f4730 | 1060 | |
284f4730 JB |
1061 | nonundocount = 0; |
1062 | no_redisplay = 0; | |
1063 | this_command_key_count = 0; | |
1064 | ||
a612e298 RS |
1065 | /* Make sure this hook runs after commands that get errors and |
1066 | throw to top level. */ | |
a98ea3f9 RS |
1067 | /* Note that the value cell will never directly contain nil |
1068 | if the symbol is a local variable. */ | |
1069 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1070 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 1071 | |
8a792f3a RS |
1072 | if (!NILP (Vdeferred_action_list)) |
1073 | call0 (Vdeferred_action_function); | |
1074 | ||
51d5a2c9 | 1075 | /* Do this after running Vpost_command_hook, for consistency. */ |
6c7178b9 | 1076 | current_kboard->Vlast_command = this_command; |
51d5a2c9 | 1077 | |
284f4730 JB |
1078 | while (1) |
1079 | { | |
284f4730 JB |
1080 | /* Make sure the current window's buffer is selected. */ |
1081 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1082 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1083 | ||
1084 | /* Display any malloc warning that just came out. Use while because | |
1085 | displaying one warning can cause another. */ | |
1086 | ||
1087 | while (pending_malloc_warning) | |
1088 | display_malloc_warning (); | |
1089 | ||
1090 | no_direct = 0; | |
1091 | ||
86e5706b RS |
1092 | Vdeactivate_mark = Qnil; |
1093 | ||
284f4730 | 1094 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1095 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1096 | |
1097 | if (minibuf_level && echo_area_glyphs) | |
1098 | { | |
f1bed6d8 RS |
1099 | /* Bind inhibit-quit to t so that C-g gets read in |
1100 | rather than quitting back to the minibuffer. */ | |
1101 | int count = specpdl_ptr - specpdl; | |
1102 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1103 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1104 | unbind_to (count, Qnil); |
f1bed6d8 | 1105 | |
284f4730 JB |
1106 | echo_area_glyphs = 0; |
1107 | no_direct = 1; | |
1108 | if (!NILP (Vquit_flag)) | |
1109 | { | |
1110 | Vquit_flag = Qnil; | |
24597608 | 1111 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1112 | } |
1113 | } | |
1114 | ||
1115 | #ifdef C_ALLOCA | |
ff4b06d3 | 1116 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1117 | /* Since we can free the most stuff here. */ |
1118 | #endif /* C_ALLOCA */ | |
1119 | ||
8f805655 | 1120 | #if 0 |
ff11dfa1 | 1121 | #ifdef MULTI_FRAME |
8f805655 JB |
1122 | /* Select the frame that the last event came from. Usually, |
1123 | switch-frame events will take care of this, but if some lisp | |
1124 | code swallows a switch-frame event, we'll fix things up here. | |
1125 | Is this a good idea? */ | |
8c18cbfb | 1126 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1127 | && XFRAME (internal_last_event_frame) != selected_frame) |
1128 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1129 | #endif |
284f4730 | 1130 | #endif |
48e416d4 RS |
1131 | /* If it has changed current-menubar from previous value, |
1132 | really recompute the menubar from the value. */ | |
a646e520 RS |
1133 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1134 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1135 | call0 (Qrecompute_lucid_menubar); |
1136 | ||
8f805655 | 1137 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1138 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1139 | Qnil, 0, 1); | |
8f805655 JB |
1140 | |
1141 | ++num_input_keys; | |
1142 | ||
284f4730 JB |
1143 | /* Now we have read a key sequence of length I, |
1144 | or else I is 0 and we found end of file. */ | |
1145 | ||
1146 | if (i == 0) /* End of file -- happens only in */ | |
1147 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1148 | /* -1 means read_key_sequence got a menu that was rejected. |
1149 | Just loop around and read another command. */ | |
1150 | if (i == -1) | |
1151 | { | |
1152 | cancel_echoing (); | |
1153 | this_command_key_count = 0; | |
ff4b06d3 | 1154 | goto finalize; |
dcc408a0 | 1155 | } |
284f4730 | 1156 | |
284f4730 JB |
1157 | last_command_char = keybuf[i - 1]; |
1158 | ||
75c0b143 RS |
1159 | /* If the previous command tried to force a specific window-start, |
1160 | forget about that, in case this command moves point far away | |
c422836d KH |
1161 | from that position. But also throw away beg_unchanged and |
1162 | end_unchanged information in that case, so that redisplay will | |
1163 | update the whole window properly. */ | |
1164 | if (!NILP (XWINDOW (selected_window)->force_start)) | |
1165 | { | |
1166 | XWINDOW (selected_window)->force_start = Qnil; | |
1167 | beg_unchanged = end_unchanged = 0; | |
1168 | } | |
75c0b143 | 1169 | |
284f4730 JB |
1170 | cmd = read_key_sequence_cmd; |
1171 | if (!NILP (Vexecuting_macro)) | |
1172 | { | |
1173 | if (!NILP (Vquit_flag)) | |
1174 | { | |
1175 | Vexecuting_macro = Qt; | |
1176 | QUIT; /* Make some noise. */ | |
1177 | /* Will return since macro now empty. */ | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1182 | cases identified below that set no_redisplay to 1. |
1183 | (actually, there's currently no way to prevent the redisplay, | |
1184 | and no_redisplay is ignored. | |
beecf6a1 | 1185 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1186 | no_redisplay = 0; |
1187 | ||
86e5706b RS |
1188 | prev_buffer = current_buffer; |
1189 | prev_modiff = MODIFF; | |
8746da95 | 1190 | last_point_position = PT; |
18cd2eeb | 1191 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1192 | |
284f4730 JB |
1193 | /* Execute the command. */ |
1194 | ||
86e5706b | 1195 | this_command = cmd; |
a98ea3f9 RS |
1196 | /* Note that the value cell will never directly contain nil |
1197 | if the symbol is a local variable. */ | |
1198 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1199 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1200 | |
258bf746 | 1201 | if (NILP (this_command)) |
284f4730 JB |
1202 | { |
1203 | /* nil means key is undefined. */ | |
1204 | bitch_at_user (); | |
c5fdd383 | 1205 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 | 1206 | update_mode_lines = 1; |
d8bcf58e | 1207 | current_kboard->Vprefix_arg = Qnil; |
284f4730 JB |
1208 | } |
1209 | else | |
1210 | { | |
d8bcf58e | 1211 | if (NILP (current_kboard->Vprefix_arg) && ! no_direct) |
284f4730 JB |
1212 | { |
1213 | /* Recognize some common commands in common situations and | |
1214 | do them directly. */ | |
8001d352 | 1215 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1216 | { |
1217 | struct Lisp_Vector *dp | |
1218 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1219 | lose = FETCH_CHAR (PT); |
1220 | SET_PT (PT + 1); | |
0f7a8fee | 1221 | if ((dp |
82ba47d7 | 1222 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1223 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1224 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1225 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1226 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1227 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1228 | >= MODIFF) | |
1229 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1230 | == PT - 1) |
284f4730 JB |
1231 | && !windows_or_buffers_changed |
1232 | && EQ (current_buffer->selective_display, Qnil) | |
1233 | && !detect_input_pending () | |
1234 | && NILP (Vexecuting_macro)) | |
1235 | no_redisplay = direct_output_forward_char (1); | |
1236 | goto directly_done; | |
1237 | } | |
8001d352 | 1238 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1239 | { |
1240 | struct Lisp_Vector *dp | |
1241 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1242 | SET_PT (PT - 1); |
1243 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1244 | if ((dp |
ca873d73 | 1245 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1246 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1247 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1248 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1249 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1250 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1251 | >= MODIFF) | |
1252 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1253 | == PT + 1) |
284f4730 JB |
1254 | && !windows_or_buffers_changed |
1255 | && EQ (current_buffer->selective_display, Qnil) | |
1256 | && !detect_input_pending () | |
1257 | && NILP (Vexecuting_macro)) | |
1258 | no_redisplay = direct_output_forward_char (-1); | |
1259 | goto directly_done; | |
1260 | } | |
258bf746 | 1261 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1262 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1263 | && INTEGERP (last_command_char)) |
284f4730 JB |
1264 | { |
1265 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1266 | int value; |
284f4730 | 1267 | |
fc9cce4e RS |
1268 | if (NILP (Vexecuting_macro) |
1269 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1270 | { |
1271 | if (!nonundocount || nonundocount >= 20) | |
1272 | { | |
1273 | Fundo_boundary (); | |
1274 | nonundocount = 0; | |
1275 | } | |
1276 | nonundocount++; | |
1277 | } | |
fc9cce4e RS |
1278 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1279 | < MODIFF) | |
1280 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1281 | != PT) | |
4c61f38e | 1282 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1283 | || windows_or_buffers_changed |
1284 | || !EQ (current_buffer->selective_display, Qnil) | |
1285 | || detect_input_pending () | |
1286 | || !NILP (Vexecuting_macro)); | |
1287 | value = internal_self_insert (c, 0); | |
1288 | if (value) | |
1289 | lose = 1; | |
1290 | if (value == 2) | |
1291 | nonundocount = 0; | |
1292 | ||
1293 | if (!lose | |
1294 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1295 | { |
1296 | struct Lisp_Vector *dp | |
1297 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1298 | int lose = c; |
284f4730 | 1299 | |
0f7a8fee JB |
1300 | if (dp) |
1301 | { | |
9b8eb840 | 1302 | Lisp_Object obj; |
0f7a8fee | 1303 | |
9b8eb840 | 1304 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1305 | if (NILP (obj)) |
8e91f441 RS |
1306 | { |
1307 | /* Do it only for char codes | |
1308 | that by default display as themselves. */ | |
1309 | if (lose >= 0x20 && lose <= 0x7e) | |
1310 | no_redisplay = direct_output_for_insert (lose); | |
1311 | } | |
8c18cbfb | 1312 | else if (VECTORP (obj) |
054c8675 | 1313 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1314 | && (obj = XVECTOR (obj)->contents[0], |
1315 | INTEGERP (obj)) | |
054c8675 RS |
1316 | /* Insist face not specified in glyph. */ |
1317 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1318 | no_redisplay |
1319 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1320 | } |
1321 | else | |
1322 | { | |
1323 | if (lose >= 0x20 && lose <= 0x7e) | |
1324 | no_redisplay = direct_output_for_insert (lose); | |
1325 | } | |
284f4730 JB |
1326 | } |
1327 | goto directly_done; | |
1328 | } | |
1329 | } | |
1330 | ||
1331 | /* Here for a command that isn't executed directly */ | |
1332 | ||
1333 | nonundocount = 0; | |
d8bcf58e | 1334 | if (NILP (current_kboard->Vprefix_arg)) |
284f4730 | 1335 | Fundo_boundary (); |
258bf746 | 1336 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1337 | |
284f4730 | 1338 | } |
a764a753 | 1339 | directly_done: ; |
284f4730 | 1340 | |
a98ea3f9 RS |
1341 | /* Note that the value cell will never directly contain nil |
1342 | if the symbol is a local variable. */ | |
1343 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1344 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1345 | |
8a792f3a | 1346 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1347 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1348 | |
284f4730 | 1349 | /* If there is a prefix argument, |
6c7178b9 KH |
1350 | 1) We don't want Vlast_command to be ``universal-argument'' |
1351 | (that would be dumb), so don't set Vlast_command, | |
284f4730 JB |
1352 | 2) we want to leave echoing on so that the prefix will be |
1353 | echoed as part of this key sequence, so don't call | |
1354 | cancel_echoing, and | |
1355 | 3) we want to leave this_command_key_count non-zero, so that | |
1356 | read_char will realize that it is re-reading a character, and | |
217258d5 KH |
1357 | not echo it a second time. |
1358 | ||
1359 | If the command didn't actually create a prefix arg, | |
1360 | but is merely a frame event that is transparent to prefix args, | |
1361 | then the above doesn't apply. */ | |
1362 | if (NILP (current_kboard->Vprefix_arg) || CONSP (last_command_char)) | |
284f4730 | 1363 | { |
6c7178b9 | 1364 | current_kboard->Vlast_command = this_command; |
284f4730 JB |
1365 | cancel_echoing (); |
1366 | this_command_key_count = 0; | |
1367 | } | |
86e5706b | 1368 | |
88ce066e | 1369 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1370 | { |
1371 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1372 | { | |
1373 | current_buffer->mark_active = Qnil; | |
1374 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1375 | } | |
1376 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1377 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1378 | } | |
ff4b06d3 KH |
1379 | |
1380 | finalize: | |
1381 | /* Install chars successfully executed in kbd macro. */ | |
1382 | ||
d8bcf58e KH |
1383 | if (!NILP (current_kboard->defining_kbd_macro) |
1384 | && NILP (current_kboard->Vprefix_arg)) | |
ff4b06d3 KH |
1385 | finalize_kbd_macro_chars (); |
1386 | ||
c5fdd383 | 1387 | #ifdef MULTI_KBOARD |
604ccd1d | 1388 | if (!was_locked) |
1e8bd3da | 1389 | any_kboard_state (); |
ff4b06d3 | 1390 | #endif |
284f4730 JB |
1391 | } |
1392 | } | |
1c9784c9 | 1393 | |
0bc3db2b RS |
1394 | /* Subroutine for safe_run_hooks: run the hook HOOK. */ |
1395 | ||
1396 | static Lisp_Object | |
1397 | safe_run_hooks_1 (hook) | |
1398 | Lisp_Object hook; | |
1399 | { | |
1400 | return call1 (Vrun_hooks, Vinhibit_quit); | |
1401 | } | |
1402 | ||
1403 | /* Subroutine for safe_run_hooks: handle an error by clearing out the hook. */ | |
1404 | ||
1405 | static Lisp_Object | |
1406 | safe_run_hooks_error (data) | |
1407 | Lisp_Object data; | |
1408 | { | |
1409 | Fset (Vinhibit_quit, Qnil); | |
1410 | } | |
1411 | ||
1c9784c9 KH |
1412 | /* If we get an error while running the hook, cause the hook variable |
1413 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1414 | to mysteriously evaporate. */ | |
0bc3db2b | 1415 | |
1c9784c9 KH |
1416 | static void |
1417 | safe_run_hooks (hook) | |
a98ea3f9 | 1418 | Lisp_Object hook; |
1c9784c9 | 1419 | { |
68553292 | 1420 | Lisp_Object value; |
1c9784c9 | 1421 | int count = specpdl_ptr - specpdl; |
0bc3db2b RS |
1422 | specbind (Qinhibit_quit, hook); |
1423 | ||
1424 | internal_condition_case (safe_run_hooks_1, Qerror, safe_run_hooks_error); | |
1c9784c9 KH |
1425 | |
1426 | unbind_to (count, Qnil); | |
1427 | } | |
284f4730 JB |
1428 | \f |
1429 | /* Number of seconds between polling for input. */ | |
1430 | int polling_period; | |
1431 | ||
eb8c3be9 | 1432 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1433 | int poll_suppress_count; |
1434 | ||
36922b18 | 1435 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1436 | int polling_for_input; |
1437 | ||
36922b18 RS |
1438 | #ifdef POLL_FOR_INPUT |
1439 | ||
284f4730 JB |
1440 | /* Handle an alarm once each second and read pending input |
1441 | so as to handle a C-g if it comces in. */ | |
1442 | ||
1443 | SIGTYPE | |
91c049d4 RS |
1444 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1445 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1446 | { |
9ac0d9e0 JB |
1447 | if (interrupt_input_blocked == 0 |
1448 | && !waiting_for_input) | |
1449 | read_avail_input (0); | |
284f4730 JB |
1450 | signal (SIGALRM, input_poll_signal); |
1451 | alarm (polling_period); | |
1452 | } | |
1453 | ||
1454 | #endif | |
1455 | ||
1456 | /* Begin signals to poll for input, if they are appropriate. | |
1457 | This function is called unconditionally from various places. */ | |
1458 | ||
1459 | start_polling () | |
1460 | { | |
1461 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1462 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1463 | { |
1464 | poll_suppress_count--; | |
1465 | if (poll_suppress_count == 0) | |
1466 | { | |
1467 | signal (SIGALRM, input_poll_signal); | |
1468 | polling_for_input = 1; | |
1469 | alarm (polling_period); | |
1470 | } | |
1471 | } | |
1472 | #endif | |
1473 | } | |
1474 | ||
1d3195db RS |
1475 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1476 | ||
1477 | int | |
1478 | input_polling_used () | |
1479 | { | |
1480 | #ifdef POLL_FOR_INPUT | |
1481 | return read_socket_hook && !interrupt_input; | |
1482 | #else | |
1483 | return 0; | |
1484 | #endif | |
1485 | } | |
1486 | ||
284f4730 JB |
1487 | /* Turn off polling. */ |
1488 | ||
1489 | stop_polling () | |
1490 | { | |
1491 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1492 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1493 | { |
1494 | if (poll_suppress_count == 0) | |
1495 | { | |
1496 | polling_for_input = 0; | |
1497 | alarm (0); | |
1498 | } | |
1499 | poll_suppress_count++; | |
1500 | } | |
1501 | #endif | |
1502 | } | |
fe8aeef3 RS |
1503 | |
1504 | /* Set the value of poll_suppress_count to COUNT | |
1505 | and start or stop polling accordingly. */ | |
1506 | ||
1507 | void | |
1508 | set_poll_suppress_count (count) | |
1509 | int count; | |
1510 | { | |
1511 | #ifdef POLL_FOR_INPUT | |
1512 | if (count == 0 && poll_suppress_count != 0) | |
1513 | { | |
1514 | poll_suppress_count = 1; | |
1515 | start_polling (); | |
1516 | } | |
1517 | else if (count != 0 && poll_suppress_count == 0) | |
1518 | { | |
1519 | stop_polling (); | |
1520 | } | |
1521 | poll_suppress_count = count; | |
1522 | #endif | |
1523 | } | |
f4eef8b4 | 1524 | |
d0a57728 RS |
1525 | /* Bind polling_period to a value at least N. |
1526 | But don't decrease it. */ | |
1527 | ||
f4eef8b4 RS |
1528 | bind_polling_period (n) |
1529 | int n; | |
1530 | { | |
1531 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1532 | int new = polling_period; |
1533 | ||
1534 | if (n > new) | |
1535 | new = n; | |
1536 | ||
f4eef8b4 | 1537 | stop_polling (); |
d0a57728 RS |
1538 | specbind (Qpolling_period, make_number (new)); |
1539 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1540 | start_polling (); |
1541 | #endif | |
1542 | } | |
284f4730 | 1543 | \f |
6da3dd3a RS |
1544 | /* Apply the control modifier to CHARACTER. */ |
1545 | ||
faf5e407 JB |
1546 | int |
1547 | make_ctrl_char (c) | |
1548 | int c; | |
1549 | { | |
d205953b JB |
1550 | /* Save the upper bits here. */ |
1551 | int upper = c & ~0177; | |
1552 | ||
1553 | c &= 0177; | |
1554 | ||
1555 | /* Everything in the columns containing the upper-case letters | |
1556 | denotes a control character. */ | |
1557 | if (c >= 0100 && c < 0140) | |
1558 | { | |
1559 | int oc = c; | |
1560 | c &= ~0140; | |
1561 | /* Set the shift modifier for a control char | |
1562 | made from a shifted letter. But only for letters! */ | |
1563 | if (oc >= 'A' && oc <= 'Z') | |
1564 | c |= shift_modifier; | |
1565 | } | |
1566 | ||
1567 | /* The lower-case letters denote control characters too. */ | |
1568 | else if (c >= 'a' && c <= 'z') | |
1569 | c &= ~0140; | |
1570 | ||
1571 | /* Include the bits for control and shift | |
1572 | only if the basic ASCII code can't indicate them. */ | |
1573 | else if (c >= ' ') | |
1574 | c |= ctrl_modifier; | |
1575 | ||
1576 | /* Replace the high bits. */ | |
1577 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1578 | |
1579 | return c; | |
1580 | } | |
1581 | ||
1582 | ||
1583 | \f | |
284f4730 JB |
1584 | /* Input of single characters from keyboard */ |
1585 | ||
1586 | Lisp_Object print_help (); | |
1587 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1588 | static void record_char (); |
284f4730 | 1589 | |
c5fdd383 KH |
1590 | #ifdef MULTI_KBOARD |
1591 | static jmp_buf wrong_kboard_jmpbuf; | |
bded54dd | 1592 | #endif |
beecf6a1 | 1593 | |
284f4730 JB |
1594 | /* read a character from the keyboard; call the redisplay if needed */ |
1595 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1596 | -1 means do not do redisplay, but do do autosaving. | |
1597 | 1 means do both. */ | |
1598 | ||
7d6de002 RS |
1599 | /* The arguments MAPS and NMAPS are for menu prompting. |
1600 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1601 | ||
1602 | PREV_EVENT is the previous input event, or nil if we are reading | |
1603 | the first event of a key sequence. | |
1604 | ||
83d68044 | 1605 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 1606 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 1607 | USED_MOUSE_MENU is null, we don't dereference it. |
dcc408a0 RS |
1608 | |
1609 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1610 | |
284f4730 | 1611 | Lisp_Object |
7d6de002 | 1612 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1613 | int commandflag; |
7d6de002 RS |
1614 | int nmaps; |
1615 | Lisp_Object *maps; | |
1616 | Lisp_Object prev_event; | |
1617 | int *used_mouse_menu; | |
284f4730 JB |
1618 | { |
1619 | register Lisp_Object c; | |
1620 | int count; | |
410d4de9 | 1621 | jmp_buf local_getcjmp; |
284f4730 | 1622 | jmp_buf save_jump; |
a1341f75 | 1623 | int key_already_recorded = 0; |
e4fe371d RS |
1624 | Lisp_Object also_record; |
1625 | also_record = Qnil; | |
284f4730 | 1626 | |
24597608 | 1627 | if (CONSP (Vunread_command_events)) |
284f4730 | 1628 | { |
24597608 RS |
1629 | c = XCONS (Vunread_command_events)->car; |
1630 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1631 | |
284f4730 JB |
1632 | if (this_command_key_count == 0) |
1633 | goto reread_first; | |
1634 | else | |
1635 | goto reread; | |
1636 | } | |
1637 | ||
86e5706b RS |
1638 | if (unread_command_char != -1) |
1639 | { | |
18cd2eeb | 1640 | XSETINT (c, unread_command_char); |
86e5706b RS |
1641 | unread_command_char = -1; |
1642 | ||
1643 | if (this_command_key_count == 0) | |
1644 | goto reread_first; | |
1645 | else | |
1646 | goto reread; | |
1647 | } | |
1648 | ||
284f4730 JB |
1649 | if (!NILP (Vexecuting_macro)) |
1650 | { | |
07d2b8de | 1651 | #ifdef MULTI_FRAME |
fce33686 JB |
1652 | /* We set this to Qmacro; since that's not a frame, nobody will |
1653 | try to switch frames on us, and the selected window will | |
1654 | remain unchanged. | |
1655 | ||
1656 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1657 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1658 | real event came from. Normally, a switch-frame event selects |
1659 | internal_last_event_frame after each command is read, but | |
1660 | events read from a macro should never cause a new frame to be | |
1661 | selected. */ | |
4c52b668 | 1662 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
07d2b8de | 1663 | #endif |
fce33686 | 1664 | |
663258f2 JB |
1665 | /* Exit the macro if we are at the end. |
1666 | Also, some things replace the macro with t | |
1667 | to force an early exit. */ | |
1668 | if (EQ (Vexecuting_macro, Qt) | |
1669 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1670 | { |
18cd2eeb | 1671 | XSETINT (c, -1); |
284f4730 JB |
1672 | return c; |
1673 | } | |
df0f2ba1 | 1674 | |
284f4730 | 1675 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); |
8c18cbfb | 1676 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1677 | && (XINT (c) & 0x80)) |
bb9e9bed | 1678 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1679 | |
284f4730 JB |
1680 | executing_macro_index++; |
1681 | ||
1682 | goto from_macro; | |
1683 | } | |
1684 | ||
cd21b839 JB |
1685 | if (!NILP (unread_switch_frame)) |
1686 | { | |
1687 | c = unread_switch_frame; | |
1688 | unread_switch_frame = Qnil; | |
1689 | ||
1690 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1691 | again, so we go to reread_first, rather than reread. */ |
1692 | goto reread_first; | |
cd21b839 JB |
1693 | } |
1694 | ||
410d4de9 RS |
1695 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) |
1696 | redisplay (); | |
e9bf89a0 | 1697 | |
410d4de9 RS |
1698 | /* Message turns off echoing unless more keystrokes turn it on again. */ |
1699 | if (echo_area_glyphs && *echo_area_glyphs | |
1700 | && echo_area_glyphs != current_kboard->echobuf) | |
1701 | cancel_echoing (); | |
1702 | else | |
1703 | /* If already echoing, continue. */ | |
1704 | echo_dash (); | |
284f4730 | 1705 | |
410d4de9 RS |
1706 | /* Try reading a character via menu prompting in the minibuf. |
1707 | Try this before the sit-for, because the sit-for | |
1708 | would do the wrong thing if we are supposed to do | |
1709 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1710 | after a mouse event so don't try a minibuf menu. */ | |
1711 | c = Qnil; | |
1712 | if (nmaps > 0 && INTERACTIVE | |
1713 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1714 | /* Don't bring up a menu if we already have another event. */ | |
1715 | && NILP (Vunread_command_events) | |
1716 | && unread_command_char < 0 | |
1717 | && !detect_input_pending ()) | |
1718 | { | |
1719 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
1720 | if (! NILP (c)) | |
1721 | { | |
1722 | key_already_recorded = 1; | |
1723 | goto non_reread_1; | |
1724 | } | |
1725 | } | |
284f4730 | 1726 | |
410d4de9 RS |
1727 | /* Make a longjmp point for quits to use, but don't alter getcjmp just yet. |
1728 | We will do that below, temporarily for short sections of code, | |
1729 | when appropriate. local_getcjmp must be in effect | |
1730 | around any call to sit_for or kbd_buffer_get_event; | |
1731 | it *must not* be in effect when we call redisplay. */ | |
284f4730 | 1732 | |
410d4de9 | 1733 | if (_setjmp (local_getcjmp)) |
284f4730 | 1734 | { |
18cd2eeb | 1735 | XSETINT (c, quit_char); |
07d2b8de | 1736 | #ifdef MULTI_FRAME |
4c52b668 KH |
1737 | XSETFRAME (internal_last_event_frame, selected_frame); |
1738 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1739 | #endif |
04904c29 RS |
1740 | /* If we report the quit char as an event, |
1741 | don't do so more than once. */ | |
1742 | if (!NILP (Vinhibit_quit)) | |
1743 | Vquit_flag = Qnil; | |
284f4730 | 1744 | |
c5fdd383 | 1745 | #ifdef MULTI_KBOARD |
df0f2ba1 | 1746 | { |
c5fdd383 KH |
1747 | KBOARD *kb = FRAME_KBOARD (selected_frame); |
1748 | if (kb != current_kboard) | |
df0f2ba1 | 1749 | { |
c5fdd383 | 1750 | Lisp_Object *tailp = &kb->kbd_queue; |
1e8bd3da RS |
1751 | /* We shouldn't get here if we were in single-kboard mode! */ |
1752 | if (single_kboard) | |
df0f2ba1 KH |
1753 | abort (); |
1754 | while (CONSP (*tailp)) | |
1755 | tailp = &XCONS (*tailp)->cdr; | |
1756 | if (!NILP (*tailp)) | |
1757 | abort (); | |
1758 | *tailp = Fcons (c, Qnil); | |
c5fdd383 KH |
1759 | kb->kbd_queue_has_data = 1; |
1760 | current_kboard = kb; | |
1761 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 KH |
1762 | } |
1763 | } | |
1764 | #endif | |
284f4730 JB |
1765 | goto non_reread; |
1766 | } | |
1767 | ||
284f4730 JB |
1768 | /* If in middle of key sequence and minibuffer not active, |
1769 | start echoing if enough time elapses. */ | |
410d4de9 | 1770 | |
c5fdd383 | 1771 | if (minibuf_level == 0 && !current_kboard->immediate_echo |
6c6083a9 | 1772 | && this_command_key_count > 0 |
27203ead | 1773 | && ! noninteractive |
284f4730 JB |
1774 | && echo_keystrokes > 0 |
1775 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1776 | { | |
1777 | Lisp_Object tem0; | |
1778 | ||
7d6de002 RS |
1779 | /* After a mouse event, start echoing right away. |
1780 | This is because we are probably about to display a menu, | |
1781 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1782 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1783 | echo (); |
7d6de002 RS |
1784 | else |
1785 | { | |
410d4de9 RS |
1786 | save_getcjmp (save_jump); |
1787 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1788 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); |
410d4de9 | 1789 | restore_getcjmp (save_jump); |
7d6de002 RS |
1790 | if (EQ (tem0, Qt)) |
1791 | echo (); | |
1792 | } | |
284f4730 JB |
1793 | } |
1794 | ||
410d4de9 | 1795 | /* Maybe auto save due to number of keystrokes. */ |
284f4730 JB |
1796 | |
1797 | if (commandflag != 0 | |
1798 | && auto_save_interval > 0 | |
51172b6d | 1799 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1800 | && !detect_input_pending ()) |
1801 | { | |
284f4730 | 1802 | Fdo_auto_save (Qnil, Qnil); |
ef8fd672 RS |
1803 | /* Hooks can actually change some buffers in auto save. */ |
1804 | redisplay (); | |
284f4730 JB |
1805 | } |
1806 | ||
8150596a | 1807 | /* Try reading using an X menu. |
24597608 RS |
1808 | This is never confused with reading using the minibuf |
1809 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1810 | does not pass on any keymaps. */ | |
410d4de9 | 1811 | |
24597608 | 1812 | if (nmaps > 0 && INTERACTIVE |
5a8d99e0 KH |
1813 | && !NILP (prev_event) |
1814 | && EVENT_HAS_PARAMETERS (prev_event) | |
1815 | && !EQ (XCONS (prev_event)->car, Qmenu_bar) | |
24597608 RS |
1816 | /* Don't bring up a menu if we already have another event. */ |
1817 | && NILP (Vunread_command_events) | |
b8556aee | 1818 | && unread_command_char < 0) |
8150596a | 1819 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1820 | |
410d4de9 RS |
1821 | /* Maybe autosave and/or garbage collect due to idleness. */ |
1822 | ||
26c1639e | 1823 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1824 | { |
1825 | int delay_level, buffer_size; | |
1826 | ||
410d4de9 RS |
1827 | /* Slow down auto saves logarithmically in size of current buffer, |
1828 | and garbage collect while we're at it. */ | |
7d6de002 RS |
1829 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) |
1830 | last_non_minibuf_size = Z - BEG; | |
1831 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1832 | delay_level = 0; | |
1833 | while (buffer_size > 64) | |
1834 | delay_level++, buffer_size -= buffer_size >> 2; | |
1835 | if (delay_level < 4) delay_level = 4; | |
1836 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1837 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1838 | ||
1839 | /* Auto save if enough time goes by without input. */ | |
1840 | if (commandflag != 0 | |
51172b6d | 1841 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1842 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1843 | && XINT (Vauto_save_timeout) > 0) |
1844 | { | |
1845 | Lisp_Object tem0; | |
1846 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
410d4de9 RS |
1847 | |
1848 | save_getcjmp (save_jump); | |
1849 | restore_getcjmp (local_getcjmp); | |
7d6de002 | 1850 | tem0 = sit_for (delay, 0, 1, 1); |
410d4de9 RS |
1851 | restore_getcjmp (save_jump); |
1852 | ||
7d6de002 RS |
1853 | if (EQ (tem0, Qt)) |
1854 | { | |
7d6de002 | 1855 | Fdo_auto_save (Qnil, Qnil); |
7d6de002 RS |
1856 | |
1857 | /* If we have auto-saved and there is still no input | |
1858 | available, garbage collect if there has been enough | |
1859 | consing going on to make it worthwhile. */ | |
1860 | if (!detect_input_pending () | |
1861 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 | 1862 | Fgarbage_collect (); |
410d4de9 | 1863 | |
ef8fd672 | 1864 | redisplay (); |
7d6de002 RS |
1865 | } |
1866 | } | |
1867 | } | |
284f4730 | 1868 | |
410d4de9 RS |
1869 | /* Read something from current KBOARD's side queue, if possible. */ |
1870 | ||
beecf6a1 | 1871 | if (NILP (c)) |
1e12dd87 | 1872 | { |
c5fdd383 | 1873 | if (current_kboard->kbd_queue_has_data) |
beecf6a1 | 1874 | { |
c5fdd383 | 1875 | if (!CONSP (current_kboard->kbd_queue)) |
4524b161 | 1876 | abort (); |
c5fdd383 KH |
1877 | c = XCONS (current_kboard->kbd_queue)->car; |
1878 | current_kboard->kbd_queue | |
1879 | = XCONS (current_kboard->kbd_queue)->cdr; | |
1880 | if (NILP (current_kboard->kbd_queue)) | |
1881 | current_kboard->kbd_queue_has_data = 0; | |
4c52b668 KH |
1882 | input_pending = readable_events (); |
1883 | #ifdef MULTI_FRAME | |
1884 | if (EVENT_HAS_PARAMETERS (c) | |
1885 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1886 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1887 | Vlast_event_frame = internal_last_event_frame; | |
1888 | #endif | |
beecf6a1 | 1889 | } |
1e8bd3da RS |
1890 | } |
1891 | ||
c5fdd383 | 1892 | #ifdef MULTI_KBOARD |
1e8bd3da RS |
1893 | /* If current_kboard's side queue is empty check the other kboards. |
1894 | If one of them has data that we have not yet seen here, | |
1895 | switch to it and process the data waiting for it. | |
1896 | ||
1897 | Note: if the events queued up for another kboard | |
1898 | have already been seen here, and therefore are not a complete command, | |
1899 | the kbd_queue_has_data field is 0, so we skip that kboard here. | |
1900 | That's to avoid an infinite loop switching between kboards here. */ | |
1901 | if (NILP (c) && !single_kboard) | |
1902 | { | |
1903 | KBOARD *kb; | |
1904 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
1905 | if (kb->kbd_queue_has_data) | |
1906 | { | |
1907 | current_kboard = kb; | |
1908 | longjmp (wrong_kboard_jmpbuf, 1); | |
1909 | } | |
1910 | } | |
df0f2ba1 KH |
1911 | #endif |
1912 | ||
410d4de9 RS |
1913 | wrong_kboard: |
1914 | ||
1915 | stop_polling (); | |
1916 | ||
1e8bd3da RS |
1917 | /* Finally, we read from the main queue, |
1918 | and if that gives us something we can't use yet, we put it on the | |
1919 | appropriate side queue and try again. */ | |
410d4de9 | 1920 | |
1e8bd3da RS |
1921 | if (NILP (c)) |
1922 | { | |
1923 | KBOARD *kb; | |
1924 | ||
1e8bd3da | 1925 | /* Actually read a character, waiting if necessary. */ |
410d4de9 RS |
1926 | save_getcjmp (save_jump); |
1927 | restore_getcjmp (local_getcjmp); | |
83d68044 | 1928 | c = kbd_buffer_get_event (&kb, used_mouse_menu); |
410d4de9 RS |
1929 | restore_getcjmp (save_jump); |
1930 | ||
c5fdd383 | 1931 | #ifdef MULTI_KBOARD |
410d4de9 | 1932 | if (! NILP (c) && (kb != current_kboard)) |
1e8bd3da RS |
1933 | { |
1934 | Lisp_Object *tailp = &kb->kbd_queue; | |
1935 | while (CONSP (*tailp)) | |
1936 | tailp = &XCONS (*tailp)->cdr; | |
1937 | if (!NILP (*tailp)) | |
1938 | abort (); | |
1939 | *tailp = Fcons (c, Qnil); | |
1940 | kb->kbd_queue_has_data = 1; | |
46b84797 | 1941 | c = Qnil; |
1e8bd3da RS |
1942 | if (single_kboard) |
1943 | goto wrong_kboard; | |
1944 | current_kboard = kb; | |
1945 | longjmp (wrong_kboard_jmpbuf, 1); | |
df0f2ba1 | 1946 | } |
1e8bd3da | 1947 | #endif |
beecf6a1 | 1948 | } |
1e8bd3da | 1949 | |
284f4730 | 1950 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1951 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1952 | Fkill_emacs (make_number (1)); |
1953 | ||
8c18cbfb | 1954 | if (INTEGERP (c)) |
80645119 JB |
1955 | { |
1956 | /* Add in any extra modifiers, where appropriate. */ | |
1957 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1958 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1959 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1960 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1961 | |
1962 | /* Transfer any other modifier bits directly from | |
1963 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1964 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1965 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1966 | } |
9fa4395d | 1967 | |
284f4730 JB |
1968 | non_reread: |
1969 | ||
284f4730 JB |
1970 | start_polling (); |
1971 | ||
410d4de9 RS |
1972 | if (NILP (c)) |
1973 | { | |
1974 | if (commandflag >= 0 | |
1975 | && !input_pending && !detect_input_pending ()) | |
1976 | redisplay (); | |
1977 | ||
1978 | goto wrong_kboard; | |
1979 | } | |
1980 | ||
1981 | non_reread_1: | |
1982 | ||
dfd11da7 RS |
1983 | /* Buffer switch events are only for internal wakeups |
1984 | so don't show them to the user. */ | |
8c18cbfb | 1985 | if (BUFFERP (c)) |
dfd11da7 RS |
1986 | return c; |
1987 | ||
a1341f75 RS |
1988 | if (key_already_recorded) |
1989 | return c; | |
1990 | ||
dfd11da7 RS |
1991 | /* Wipe the echo area. */ |
1992 | echo_area_glyphs = 0; | |
284f4730 JB |
1993 | |
1994 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1995 | if (INTEGERP (c)) |
284f4730 JB |
1996 | { |
1997 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1998 | if (XINT (c) == -1) |
284f4730 JB |
1999 | return c; |
2000 | ||
8c18cbfb | 2001 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
2002 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
2003 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
2004 | } |
2005 | ||
e4fe371d RS |
2006 | /* If this event is a mouse click in the menu bar, |
2007 | return just menu-bar for now. Modify the mouse click event | |
2008 | so we won't do this twice, then queue it up. */ | |
2009 | if (EVENT_HAS_PARAMETERS (c) | |
2010 | && CONSP (XCONS (c)->cdr) | |
2011 | && CONSP (EVENT_START (c)) | |
2012 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 2013 | { |
e4fe371d | 2014 | Lisp_Object posn; |
284f4730 | 2015 | |
e4fe371d RS |
2016 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
2017 | /* Handle menu-bar events: | |
2018 | insert the dummy prefix event `menu-bar'. */ | |
2019 | if (EQ (posn, Qmenu_bar)) | |
2020 | { | |
2021 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
2022 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 2023 | |
e4fe371d RS |
2024 | also_record = c; |
2025 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
2026 | c = posn; | |
284f4730 | 2027 | } |
284f4730 JB |
2028 | } |
2029 | ||
e4fe371d RS |
2030 | record_char (c); |
2031 | if (! NILP (also_record)) | |
2032 | record_char (also_record); | |
51172b6d | 2033 | |
284f4730 JB |
2034 | from_macro: |
2035 | reread_first: | |
284f4730 | 2036 | |
b8556aee | 2037 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
2038 | if (echo_keystrokes |
2039 | && ! (EVENT_HAS_PARAMETERS (c) | |
2040 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
2041 | { |
2042 | echo_char (c); | |
2043 | if (! NILP (also_record)) | |
2044 | echo_char (also_record); | |
2045 | } | |
b8556aee | 2046 | |
db8c1663 | 2047 | /* Record this character as part of the current key. */ |
b8556aee | 2048 | add_command_key (c); |
e4fe371d RS |
2049 | if (! NILP (also_record)) |
2050 | add_command_key (also_record); | |
284f4730 JB |
2051 | |
2052 | /* Re-reading in the middle of a command */ | |
2053 | reread: | |
2054 | last_input_char = c; | |
2055 | num_input_chars++; | |
2056 | ||
2057 | /* Process the help character specially if enabled */ | |
ecb7cb34 | 2058 | if (!NILP (Vhelp_form) && help_char_p (c)) |
284f4730 JB |
2059 | { |
2060 | Lisp_Object tem0; | |
2061 | count = specpdl_ptr - specpdl; | |
2062 | ||
2063 | record_unwind_protect (Fset_window_configuration, | |
2064 | Fcurrent_window_configuration (Qnil)); | |
2065 | ||
2066 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 2067 | if (STRINGP (tem0)) |
284f4730 JB |
2068 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
2069 | ||
2070 | cancel_echoing (); | |
3cb81011 KH |
2071 | do |
2072 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2073 | while (BUFFERP (c)); |
ff11dfa1 | 2074 | /* Remove the help from the frame */ |
284f4730 | 2075 | unbind_to (count, Qnil); |
410d4de9 | 2076 | |
284f4730 JB |
2077 | redisplay (); |
2078 | if (EQ (c, make_number (040))) | |
2079 | { | |
2080 | cancel_echoing (); | |
3cb81011 KH |
2081 | do |
2082 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 2083 | while (BUFFERP (c)); |
284f4730 JB |
2084 | } |
2085 | } | |
2086 | ||
2087 | return c; | |
2088 | } | |
2089 | ||
ecb7cb34 KH |
2090 | /* Return 1 if should recognize C as "the help character". */ |
2091 | ||
2092 | int | |
2093 | help_char_p (c) | |
2094 | Lisp_Object c; | |
2095 | { | |
2096 | Lisp_Object tail; | |
2097 | ||
2098 | if (EQ (c, Vhelp_char)) | |
2099 | return 1; | |
2100 | for (tail = Vhelp_event_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
2101 | if (EQ (c, XCONS (tail)->car)) | |
2102 | return 1; | |
2103 | return 0; | |
2104 | } | |
2105 | ||
e4fe371d RS |
2106 | /* Record the input event C in various ways. */ |
2107 | ||
2108 | static void | |
2109 | record_char (c) | |
2110 | Lisp_Object c; | |
2111 | { | |
2112 | total_keys++; | |
2113 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
2114 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
2115 | recent_keys_index = 0; | |
2116 | ||
2117 | /* Write c to the dribble file. If c is a lispy event, write | |
2118 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
2119 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
2120 | if (dribble) | |
2121 | { | |
2122 | if (INTEGERP (c)) | |
2123 | { | |
2124 | if (XUINT (c) < 0x100) | |
2125 | putc (XINT (c), dribble); | |
2126 | else | |
6de34814 | 2127 | fprintf (dribble, " 0x%x", (int) XUINT (c)); |
e4fe371d RS |
2128 | } |
2129 | else | |
2130 | { | |
2131 | Lisp_Object dribblee; | |
2132 | ||
2133 | /* If it's a structured event, take the event header. */ | |
2134 | dribblee = EVENT_HEAD (c); | |
2135 | ||
2136 | if (SYMBOLP (dribblee)) | |
2137 | { | |
2138 | putc ('<', dribble); | |
2139 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2140 | XSYMBOL (dribblee)->name->size, | |
2141 | dribble); | |
2142 | putc ('>', dribble); | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | fflush (dribble); | |
2147 | } | |
2148 | ||
2149 | store_kbd_macro_char (c); | |
2150 | ||
2151 | num_nonmacro_input_chars++; | |
2152 | } | |
2153 | ||
284f4730 JB |
2154 | Lisp_Object |
2155 | print_help (object) | |
2156 | Lisp_Object object; | |
2157 | { | |
622de3e9 | 2158 | struct buffer *old = current_buffer; |
284f4730 | 2159 | Fprinc (object, Qnil); |
622de3e9 KH |
2160 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2161 | call0 (intern ("help-mode")); | |
2162 | set_buffer_internal (old); | |
284f4730 JB |
2163 | return Qnil; |
2164 | } | |
2165 | ||
2166 | /* Copy out or in the info on where C-g should throw to. | |
2167 | This is used when running Lisp code from within get_char, | |
2168 | in case get_char is called recursively. | |
2169 | See read_process_output. */ | |
2170 | ||
2171 | save_getcjmp (temp) | |
2172 | jmp_buf temp; | |
2173 | { | |
2174 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2175 | } | |
2176 | ||
2177 | restore_getcjmp (temp) | |
2178 | jmp_buf temp; | |
2179 | { | |
2180 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2181 | } | |
284f4730 | 2182 | \f |
2eb6bfbe RM |
2183 | #ifdef HAVE_MOUSE |
2184 | ||
284f4730 JB |
2185 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2186 | of this function. */ | |
a9d77f1f | 2187 | |
284f4730 JB |
2188 | static Lisp_Object |
2189 | tracking_off (old_value) | |
2190 | Lisp_Object old_value; | |
2191 | { | |
71edead1 RS |
2192 | do_mouse_tracking = old_value; |
2193 | if (NILP (old_value)) | |
284f4730 | 2194 | { |
284f4730 JB |
2195 | /* Redisplay may have been preempted because there was input |
2196 | available, and it assumes it will be called again after the | |
2197 | input has been processed. If the only input available was | |
2198 | the sort that we have just disabled, then we need to call | |
2199 | redisplay. */ | |
2200 | if (!readable_events ()) | |
2201 | { | |
2202 | redisplay_preserve_echo_area (); | |
2203 | get_input_pending (&input_pending); | |
2204 | } | |
2205 | } | |
2206 | } | |
2207 | ||
2208 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2209 | "Evaluate BODY with mouse movement events enabled.\n\ |
2210 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2211 | you can read with `read-event'.\n\ | |
2212 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2213 | (args) |
2214 | Lisp_Object args; | |
2215 | { | |
2216 | int count = specpdl_ptr - specpdl; | |
2217 | Lisp_Object val; | |
2218 | ||
a9d77f1f | 2219 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2220 | |
a9d77f1f | 2221 | XSETFRAME (do_mouse_tracking, selected_frame); |
df0f2ba1 | 2222 | |
284f4730 JB |
2223 | val = Fprogn (args); |
2224 | return unbind_to (count, val); | |
2225 | } | |
2eb6bfbe RM |
2226 | |
2227 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
2228 | \f |
2229 | /* Low level keyboard/mouse input. | |
2230 | kbd_buffer_store_event places events in kbd_buffer, and | |
2231 | kbd_buffer_get_event retrieves them. | |
2232 | mouse_moved indicates when the mouse has moved again, and | |
2233 | *mouse_position_hook provides the mouse position. */ | |
2234 | ||
2235 | /* Return true iff there are any events in the queue that read-char | |
2236 | would return. If this returns false, a read-char would block. */ | |
2237 | static int | |
2238 | readable_events () | |
2239 | { | |
beecf6a1 KH |
2240 | if (kbd_fetch_ptr != kbd_store_ptr) |
2241 | return 1; | |
2242 | #ifdef HAVE_MOUSE | |
2243 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2244 | return 1; | |
2245 | #endif | |
1e8bd3da | 2246 | if (single_kboard) |
4c52b668 | 2247 | { |
c5fdd383 | 2248 | if (current_kboard->kbd_queue_has_data) |
4c52b668 KH |
2249 | return 1; |
2250 | } | |
2251 | else | |
2252 | { | |
c5fdd383 KH |
2253 | KBOARD *kb; |
2254 | for (kb = all_kboards; kb; kb = kb->next_kboard) | |
2255 | if (kb->kbd_queue_has_data) | |
4c52b668 KH |
2256 | return 1; |
2257 | } | |
beecf6a1 | 2258 | return 0; |
a612e298 RS |
2259 | } |
2260 | ||
2261 | /* Set this for debugging, to have a way to get out */ | |
2262 | int stop_character; | |
284f4730 | 2263 | |
c5fdd383 KH |
2264 | #ifdef MULTI_KBOARD |
2265 | static KBOARD * | |
2266 | event_to_kboard (event) | |
5798cf15 KH |
2267 | struct input_event *event; |
2268 | { | |
2269 | Lisp_Object frame; | |
2270 | frame = event->frame_or_window; | |
2271 | if (CONSP (frame)) | |
2272 | frame = XCONS (frame)->car; | |
2273 | else if (WINDOWP (frame)) | |
2274 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
2275 | ||
2276 | /* There are still some events that don't set this field. | |
f5b56972 KH |
2277 | For now, just ignore the problem. |
2278 | Also ignore dead frames here. */ | |
2279 | if (!FRAMEP (frame) || !FRAME_LIVE_P (XFRAME (frame))) | |
5798cf15 KH |
2280 | return 0; |
2281 | else | |
c5fdd383 | 2282 | return FRAME_KBOARD (XFRAME (frame)); |
5798cf15 KH |
2283 | } |
2284 | #endif | |
2285 | ||
284f4730 JB |
2286 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ |
2287 | ||
2288 | void | |
2289 | kbd_buffer_store_event (event) | |
2290 | register struct input_event *event; | |
2291 | { | |
2292 | if (event->kind == no_event) | |
2293 | abort (); | |
2294 | ||
2295 | if (event->kind == ascii_keystroke) | |
2296 | { | |
e9bf89a0 | 2297 | register int c = event->code & 0377; |
284f4730 | 2298 | |
faf5e407 JB |
2299 | if (event->modifiers & ctrl_modifier) |
2300 | c = make_ctrl_char (c); | |
2301 | ||
9fd7d808 RS |
2302 | c |= (event->modifiers |
2303 | & (meta_modifier | alt_modifier | |
2304 | | hyper_modifier | super_modifier)); | |
2305 | ||
86e5706b | 2306 | if (c == quit_char) |
284f4730 | 2307 | { |
3e51c7b7 | 2308 | extern SIGTYPE interrupt_signal (); |
c5fdd383 KH |
2309 | #ifdef MULTI_KBOARD |
2310 | KBOARD *kb; | |
5798cf15 KH |
2311 | struct input_event *sp; |
2312 | ||
1e8bd3da | 2313 | if (single_kboard |
c5fdd383 KH |
2314 | && (kb = FRAME_KBOARD (XFRAME (event->frame_or_window)), |
2315 | kb != current_kboard)) | |
5798cf15 | 2316 | { |
c5fdd383 | 2317 | kb->kbd_queue |
5798cf15 KH |
2318 | = Fcons (make_lispy_switch_frame (event->frame_or_window), |
2319 | Fcons (make_number (c), Qnil)); | |
c5fdd383 | 2320 | kb->kbd_queue_has_data = 1; |
5798cf15 KH |
2321 | for (sp = kbd_fetch_ptr; sp != kbd_store_ptr; sp++) |
2322 | { | |
2323 | if (sp == kbd_buffer + KBD_BUFFER_SIZE) | |
2324 | sp = kbd_buffer; | |
2325 | ||
c5fdd383 | 2326 | if (event_to_kboard (sp) == kb) |
5798cf15 KH |
2327 | { |
2328 | sp->kind = no_event; | |
2329 | sp->frame_or_window = Qnil; | |
2330 | } | |
2331 | } | |
2332 | return; | |
2333 | } | |
2334 | #endif | |
3e51c7b7 | 2335 | |
07d2b8de | 2336 | #ifdef MULTI_FRAME |
284f4730 | 2337 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2338 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2339 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2340 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2341 | { |
9b8eb840 | 2342 | Lisp_Object focus; |
4bb994d1 | 2343 | |
9b8eb840 | 2344 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2345 | if (NILP (focus)) |
beecf6a1 | 2346 | focus = event->frame_or_window; |
4c52b668 KH |
2347 | internal_last_event_frame = focus; |
2348 | Vlast_event_frame = focus; | |
4bb994d1 | 2349 | } |
07d2b8de | 2350 | #endif |
3e51c7b7 | 2351 | |
ffd56f97 | 2352 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2353 | interrupt_signal (); |
2354 | return; | |
2355 | } | |
2356 | ||
2357 | if (c && c == stop_character) | |
2358 | { | |
2359 | sys_suspend (); | |
2360 | return; | |
2361 | } | |
284f4730 JB |
2362 | } |
2363 | ||
beecf6a1 KH |
2364 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2365 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2366 | |
2367 | /* Don't let the very last slot in the buffer become full, | |
2368 | since that would make the two pointers equal, | |
2369 | and that is indistinguishable from an empty buffer. | |
2370 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2371 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2372 | { |
beecf6a1 | 2373 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2374 | sp->kind = event->kind; |
27203ead RS |
2375 | if (event->kind == selection_request_event) |
2376 | { | |
2377 | /* We must not use the ordinary copying code for this case, | |
2378 | since `part' is an enum and copying it might not copy enough | |
2379 | in this case. */ | |
612b78ef | 2380 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2381 | } |
2382 | else | |
2383 | { | |
612b78ef KH |
2384 | sp->code = event->code; |
2385 | sp->part = event->part; | |
2386 | sp->frame_or_window = event->frame_or_window; | |
2387 | sp->modifiers = event->modifiers; | |
2388 | sp->x = event->x; | |
2389 | sp->y = event->y; | |
2390 | sp->timestamp = event->timestamp; | |
27203ead | 2391 | } |
beecf6a1 KH |
2392 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2393 | - kbd_buffer] | |
7b4aedb9 | 2394 | = event->frame_or_window); |
284f4730 | 2395 | |
beecf6a1 | 2396 | kbd_store_ptr++; |
284f4730 JB |
2397 | } |
2398 | } | |
a612e298 RS |
2399 | \f |
2400 | /* Read one event from the event buffer, waiting if necessary. | |
2401 | The value is a Lisp object representing the event. | |
2402 | The value is nil for an event that should be ignored, | |
2403 | or that was handled here. | |
2404 | We always read and discard one event. */ | |
284f4730 JB |
2405 | |
2406 | static Lisp_Object | |
83d68044 | 2407 | kbd_buffer_get_event (kbp, used_mouse_menu) |
410d4de9 | 2408 | KBOARD **kbp; |
83d68044 | 2409 | int *used_mouse_menu; |
284f4730 JB |
2410 | { |
2411 | register int c; | |
2412 | Lisp_Object obj; | |
2413 | ||
2414 | if (noninteractive) | |
2415 | { | |
2416 | c = getchar (); | |
18cd2eeb | 2417 | XSETINT (obj, c); |
f5b56972 | 2418 | *kbp = current_kboard; |
284f4730 JB |
2419 | return obj; |
2420 | } | |
2421 | ||
2422 | /* Wait until there is input available. */ | |
2423 | for (;;) | |
2424 | { | |
beecf6a1 KH |
2425 | if (kbd_fetch_ptr != kbd_store_ptr) |
2426 | break; | |
2427 | #ifdef HAVE_MOUSE | |
2428 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
284f4730 | 2429 | break; |
beecf6a1 | 2430 | #endif |
284f4730 JB |
2431 | |
2432 | /* If the quit flag is set, then read_char will return | |
2433 | quit_char, so that counts as "available input." */ | |
2434 | if (!NILP (Vquit_flag)) | |
2435 | quit_throw_to_read_char (); | |
2436 | ||
2437 | /* One way or another, wait until input is available; then, if | |
2438 | interrupt handlers have not read it, read it now. */ | |
2439 | ||
2440 | #ifdef OLDVMS | |
2441 | wait_for_kbd_input (); | |
2442 | #else | |
2443 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2444 | #ifdef SIGIO | |
2445 | gobble_input (0); | |
2446 | #endif /* SIGIO */ | |
beecf6a1 KH |
2447 | if (kbd_fetch_ptr != kbd_store_ptr) |
2448 | break; | |
2449 | #ifdef HAVE_MOUSE | |
2450 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2451 | break; | |
2452 | #endif | |
2453 | { | |
2454 | Lisp_Object minus_one; | |
f76475ad | 2455 | |
beecf6a1 KH |
2456 | XSETINT (minus_one, -1); |
2457 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 | 2458 | |
beecf6a1 KH |
2459 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2460 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2461 | read_avail_input (1); | |
2462 | } | |
284f4730 JB |
2463 | #endif /* not VMS */ |
2464 | } | |
2465 | ||
2466 | /* At this point, we know that there is a readable event available | |
2467 | somewhere. If the event queue is empty, then there must be a | |
2468 | mouse movement enabled and available. */ | |
beecf6a1 | 2469 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2470 | { |
cd21b839 | 2471 | struct input_event *event; |
3e51c7b7 | 2472 | |
beecf6a1 KH |
2473 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2474 | ? kbd_fetch_ptr | |
2475 | : kbd_buffer); | |
3e51c7b7 | 2476 | |
cd21b839 | 2477 | last_event_timestamp = event->timestamp; |
cd21b839 | 2478 | |
c5fdd383 KH |
2479 | #ifdef MULTI_KBOARD |
2480 | *kbp = event_to_kboard (event); | |
2481 | if (*kbp == 0) | |
2482 | *kbp = current_kboard; /* Better than returning null ptr? */ | |
5798cf15 | 2483 | #else |
c5fdd383 | 2484 | *kbp = &the_only_kboard; |
5798cf15 | 2485 | #endif |
beecf6a1 | 2486 | |
4bb994d1 JB |
2487 | obj = Qnil; |
2488 | ||
48e416d4 | 2489 | /* These two kinds of events get special handling |
a612e298 RS |
2490 | and don't actually appear to the command loop. |
2491 | We return nil for them. */ | |
48e416d4 RS |
2492 | if (event->kind == selection_request_event) |
2493 | { | |
598a9fa7 | 2494 | #ifdef HAVE_X11 |
1e8bd3da RS |
2495 | struct input_event copy; |
2496 | ||
4581e928 RS |
2497 | /* Remove it from the buffer before processing it, |
2498 | since otherwise swallow_events will see it | |
2499 | and process it again. */ | |
1e8bd3da | 2500 | copy = *event; |
beecf6a1 | 2501 | kbd_fetch_ptr = event + 1; |
4581e928 | 2502 | x_handle_selection_request (©); |
598a9fa7 JB |
2503 | #else |
2504 | /* We're getting selection request events, but we don't have | |
2505 | a window system. */ | |
2506 | abort (); | |
2507 | #endif | |
48e416d4 RS |
2508 | } |
2509 | ||
1e12dd87 | 2510 | else if (event->kind == selection_clear_event) |
48e416d4 | 2511 | { |
598a9fa7 | 2512 | #ifdef HAVE_X11 |
48e416d4 | 2513 | x_handle_selection_clear (event); |
beecf6a1 | 2514 | kbd_fetch_ptr = event + 1; |
598a9fa7 JB |
2515 | #else |
2516 | /* We're getting selection request events, but we don't have | |
2517 | a window system. */ | |
2518 | abort (); | |
2519 | #endif | |
48e416d4 | 2520 | } |
990acea3 RS |
2521 | #ifdef HAVE_X11 |
2522 | else if (event->kind == delete_window_event) | |
2523 | { | |
bbdc2092 RS |
2524 | /* Make an event (delete-frame (FRAME)). */ |
2525 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2526 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2527 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2528 | } |
2529 | else if (event->kind == iconify_event) | |
2530 | { | |
2531 | /* Make an event (iconify-frame (FRAME)). */ | |
2532 | obj = Fcons (event->frame_or_window, Qnil); | |
2533 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2534 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2535 | } |
2536 | else if (event->kind == deiconify_event) | |
2537 | { | |
2538 | /* Make an event (make-frame-visible (FRAME)). */ | |
2539 | obj = Fcons (event->frame_or_window, Qnil); | |
2540 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2541 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2542 | } |
2543 | #endif | |
a8015ab5 KH |
2544 | else if (event->kind == buffer_switch_event) |
2545 | { | |
2546 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2547 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2548 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2549 | } |
a612e298 | 2550 | /* Just discard these, by returning nil. |
c5fdd383 | 2551 | With MULTI_KBOARD, these events are used as placeholders |
5798cf15 KH |
2552 | when we need to randomly delete events from the queue. |
2553 | (They shouldn't otherwise be found in the buffer, | |
2554 | but on some machines it appears they do show up | |
c5fdd383 | 2555 | even without MULTI_KBOARD.) */ |
a612e298 | 2556 | else if (event->kind == no_event) |
beecf6a1 | 2557 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2558 | |
4bb994d1 JB |
2559 | /* If this event is on a different frame, return a switch-frame this |
2560 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2561 | else |
2562 | { | |
a6d53864 | 2563 | #ifdef MULTI_FRAME |
9b8eb840 | 2564 | Lisp_Object frame; |
1e12dd87 | 2565 | Lisp_Object focus; |
7b4aedb9 | 2566 | |
9b8eb840 | 2567 | frame = event->frame_or_window; |
2470a66f KH |
2568 | if (CONSP (frame)) |
2569 | frame = XCONS (frame)->car; | |
2570 | else if (WINDOWP (frame)) | |
1e12dd87 | 2571 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2572 | |
1e12dd87 RS |
2573 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2574 | if (! NILP (focus)) | |
2575 | frame = focus; | |
07d2b8de | 2576 | |
4c52b668 | 2577 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2578 | && XFRAME (frame) != selected_frame) |
2579 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2580 | internal_last_event_frame = frame; |
a6d53864 | 2581 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2582 | |
1e12dd87 RS |
2583 | /* If we didn't decide to make a switch-frame event, go ahead |
2584 | and build a real event from the queue entry. */ | |
cd21b839 | 2585 | |
1e12dd87 RS |
2586 | if (NILP (obj)) |
2587 | { | |
2588 | obj = make_lispy_event (event); | |
83d68044 KH |
2589 | #ifdef USE_X_TOOLKIT |
2590 | /* If this was a menu selection, then set the flag to inhibit | |
2591 | writing to last_nonmenu_event. Don't do this if the event | |
2592 | we're returning is (menu-bar), though; that indicates the | |
2593 | beginning of the menu sequence, and we might as well leave | |
2594 | that as the `event with parameters' for this selection. */ | |
2595 | if (event->kind == menu_bar_event | |
2596 | && !(CONSP (obj) && EQ (XCONS (obj)->car, Qmenu_bar)) | |
2597 | && used_mouse_menu) | |
2598 | *used_mouse_menu = 1; | |
2599 | #endif | |
1e12dd87 RS |
2600 | |
2601 | /* Wipe out this event, to catch bugs. */ | |
2602 | event->kind = no_event; | |
beecf6a1 | 2603 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2604 | |
beecf6a1 | 2605 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2606 | } |
4bb994d1 | 2607 | } |
284f4730 | 2608 | } |
2eb6bfbe | 2609 | #ifdef HAVE_MOUSE |
a612e298 | 2610 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2611 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2612 | { |
a9d77f1f | 2613 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2614 | Lisp_Object bar_window; |
3c370943 | 2615 | enum scroll_bar_part part; |
e5d77022 JB |
2616 | Lisp_Object x, y; |
2617 | unsigned long time; | |
284f4730 | 2618 | |
c5fdd383 | 2619 | *kbp = current_kboard; |
e177ac3a RS |
2620 | /* Note that this uses F to determine which display to look at. |
2621 | If there is no valid info, it does not store anything | |
2622 | so x remains nil. */ | |
2623 | x = Qnil; | |
dd26ab75 | 2624 | (*mouse_position_hook) (&f, 0, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2625 | |
2626 | obj = Qnil; | |
284f4730 | 2627 | |
07d2b8de | 2628 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2629 | /* Decide if we should generate a switch-frame event. Don't |
2630 | generate switch-frame events for motion outside of all Emacs | |
2631 | frames. */ | |
e177ac3a | 2632 | if (!NILP (x) && f) |
cd21b839 | 2633 | { |
9b8eb840 | 2634 | Lisp_Object frame; |
4bb994d1 | 2635 | |
9b8eb840 | 2636 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2637 | if (NILP (frame)) |
18cd2eeb | 2638 | XSETFRAME (frame, f); |
4bb994d1 | 2639 | |
4c52b668 | 2640 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2641 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2642 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2643 | internal_last_event_frame = frame; |
cd21b839 | 2644 | } |
68553292 | 2645 | #endif |
4bb994d1 | 2646 | |
df0f2ba1 | 2647 | /* If we didn't decide to make a switch-frame event, go ahead and |
4bb994d1 | 2648 | return a mouse-motion event. */ |
e177ac3a | 2649 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2650 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2651 | } |
2eb6bfbe | 2652 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2653 | else |
2654 | /* We were promised by the above while loop that there was | |
2655 | something for us to read! */ | |
2656 | abort (); | |
2657 | ||
2658 | input_pending = readable_events (); | |
2659 | ||
3c370943 | 2660 | #ifdef MULTI_FRAME |
4c52b668 | 2661 | Vlast_event_frame = internal_last_event_frame; |
3c370943 JB |
2662 | #endif |
2663 | ||
284f4730 JB |
2664 | return (obj); |
2665 | } | |
a612e298 RS |
2666 | \f |
2667 | /* Process any events that are not user-visible, | |
2668 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2669 | |
2670 | void | |
2671 | swallow_events () | |
2672 | { | |
beecf6a1 | 2673 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2674 | { |
2675 | struct input_event *event; | |
2676 | ||
beecf6a1 KH |
2677 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2678 | ? kbd_fetch_ptr | |
2679 | : kbd_buffer); | |
3a3b9632 RS |
2680 | |
2681 | last_event_timestamp = event->timestamp; | |
2682 | ||
2683 | /* These two kinds of events get special handling | |
2684 | and don't actually appear to the command loop. */ | |
2685 | if (event->kind == selection_request_event) | |
2686 | { | |
2687 | #ifdef HAVE_X11 | |
4581e928 RS |
2688 | struct input_event copy; |
2689 | copy = *event; | |
beecf6a1 | 2690 | kbd_fetch_ptr = event + 1; |
4581e928 | 2691 | x_handle_selection_request (©); |
3a3b9632 RS |
2692 | #else |
2693 | /* We're getting selection request events, but we don't have | |
2694 | a window system. */ | |
2695 | abort (); | |
2696 | #endif | |
2697 | } | |
2698 | ||
2699 | else if (event->kind == selection_clear_event) | |
2700 | { | |
2701 | #ifdef HAVE_X11 | |
2702 | x_handle_selection_clear (event); | |
beecf6a1 | 2703 | kbd_fetch_ptr = event + 1; |
3a3b9632 RS |
2704 | #else |
2705 | /* We're getting selection request events, but we don't have | |
2706 | a window system. */ | |
2707 | abort (); | |
2708 | #endif | |
2709 | } | |
2710 | else | |
2711 | break; | |
2712 | } | |
2713 | ||
2714 | get_input_pending (&input_pending); | |
2715 | } | |
a612e298 | 2716 | \f |
284f4730 | 2717 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2718 | static Lisp_Object accent_key_syms; |
284f4730 JB |
2719 | static Lisp_Object func_key_syms; |
2720 | static Lisp_Object mouse_syms; | |
2721 | ||
e9bf89a0 RS |
2722 | /* This is a list of keysym codes for special "accent" characters. |
2723 | It parallels lispy_accent_keys. */ | |
2724 | ||
2725 | static int lispy_accent_codes[] = | |
2726 | { | |
79a7046c | 2727 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2728 | XK_dead_circumflex, |
79a7046c RS |
2729 | #else |
2730 | 0, | |
2731 | #endif | |
2732 | #ifdef XK_dead_grave | |
e9bf89a0 | 2733 | XK_dead_grave, |
79a7046c RS |
2734 | #else |
2735 | 0, | |
2736 | #endif | |
2737 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2738 | XK_dead_tilde, |
79a7046c RS |
2739 | #else |
2740 | 0, | |
2741 | #endif | |
2742 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2743 | XK_dead_diaeresis, |
79a7046c RS |
2744 | #else |
2745 | 0, | |
2746 | #endif | |
2747 | #ifdef XK_dead_macron | |
e9bf89a0 | 2748 | XK_dead_macron, |
79a7046c RS |
2749 | #else |
2750 | 0, | |
2751 | #endif | |
2752 | #ifdef XK_dead_degree | |
e9bf89a0 | 2753 | XK_dead_degree, |
79a7046c RS |
2754 | #else |
2755 | 0, | |
2756 | #endif | |
2757 | #ifdef XK_dead_acute | |
e9bf89a0 | 2758 | XK_dead_acute, |
79a7046c RS |
2759 | #else |
2760 | 0, | |
2761 | #endif | |
2762 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2763 | XK_dead_cedilla, |
79a7046c RS |
2764 | #else |
2765 | 0, | |
2766 | #endif | |
2767 | #ifdef XK_dead_breve | |
e9bf89a0 | 2768 | XK_dead_breve, |
79a7046c RS |
2769 | #else |
2770 | 0, | |
2771 | #endif | |
2772 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2773 | XK_dead_ogonek, |
79a7046c RS |
2774 | #else |
2775 | 0, | |
2776 | #endif | |
2777 | #ifdef XK_dead_caron | |
e9bf89a0 | 2778 | XK_dead_caron, |
79a7046c RS |
2779 | #else |
2780 | 0, | |
2781 | #endif | |
2782 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2783 | XK_dead_doubleacute, |
79a7046c RS |
2784 | #else |
2785 | 0, | |
2786 | #endif | |
2787 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2788 | XK_dead_abovedot, |
79a7046c RS |
2789 | #else |
2790 | 0, | |
2791 | #endif | |
e9bf89a0 RS |
2792 | }; |
2793 | ||
2794 | /* This is a list of Lisp names for special "accent" characters. | |
2795 | It parallels lispy_accent_codes. */ | |
2796 | ||
2797 | static char *lispy_accent_keys[] = | |
2798 | { | |
2799 | "dead-circumflex", | |
2800 | "dead-grave", | |
2801 | "dead-tilde", | |
2802 | "dead-diaeresis", | |
2803 | "dead-macron", | |
2804 | "dead-degree", | |
2805 | "dead-acute", | |
2806 | "dead-cedilla", | |
2807 | "dead-breve", | |
2808 | "dead-ogonek", | |
2809 | "dead-caron", | |
2810 | "dead-doubleacute", | |
2811 | "dead-abovedot", | |
2812 | }; | |
2813 | ||
284f4730 JB |
2814 | /* You'll notice that this table is arranged to be conveniently |
2815 | indexed by X Windows keysym values. */ | |
2816 | static char *lispy_function_keys[] = | |
2817 | { | |
2818 | /* X Keysym value */ | |
2819 | ||
80e4aa30 | 2820 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2821 | "backspace", |
2822 | "tab", | |
2823 | "linefeed", | |
2824 | "clear", | |
2825 | 0, | |
2826 | "return", | |
2827 | 0, 0, | |
2828 | 0, 0, 0, /* 0xff10 */ | |
2829 | "pause", | |
2830 | 0, 0, 0, 0, 0, 0, 0, | |
2831 | "escape", | |
2832 | 0, 0, 0, 0, | |
2833 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2834 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2835 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2836 | ||
284f4730 JB |
2837 | "home", /* 0xff50 */ /* IsCursorKey */ |
2838 | "left", | |
2839 | "up", | |
2840 | "right", | |
2841 | "down", | |
2842 | "prior", | |
2843 | "next", | |
2844 | "end", | |
2845 | "begin", | |
2846 | 0, /* 0xff59 */ | |
2847 | 0, 0, 0, 0, 0, 0, | |
2848 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2849 | "print", | |
2850 | "execute", | |
2851 | "insert", | |
2852 | 0, /* 0xff64 */ | |
2853 | "undo", | |
2854 | "redo", | |
2855 | "menu", | |
2856 | "find", | |
2857 | "cancel", | |
2858 | "help", | |
2859 | "break", /* 0xff6b */ | |
2860 | ||
9fdbfdf8 | 2861 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2862 | 0, /* 0xff76 */ |
36ae397e | 2863 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2864 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2865 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2866 | "kp-tab", /* 0xff89 */ | |
2867 | 0, 0, 0, | |
2868 | "kp-enter", /* 0xff8d */ | |
2869 | 0, 0, 0, | |
2870 | "kp-f1", /* 0xff91 */ | |
2871 | "kp-f2", | |
2872 | "kp-f3", | |
2873 | "kp-f4", | |
872157e7 RS |
2874 | "kp-home", /* 0xff95 */ |
2875 | "kp-left", | |
2876 | "kp-up", | |
2877 | "kp-right", | |
2878 | "kp-down", | |
2879 | "kp-prior", /* kp-page-up */ | |
2880 | "kp-next", /* kp-page-down */ | |
2881 | "kp-end", | |
2882 | "kp-begin", | |
2883 | "kp-insert", | |
2884 | "kp-delete", | |
2885 | 0, /* 0xffa0 */ | |
2886 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2887 | "kp-multiply", /* 0xffaa */ |
2888 | "kp-add", | |
2889 | "kp-separator", | |
2890 | "kp-subtract", | |
2891 | "kp-decimal", | |
2892 | "kp-divide", /* 0xffaf */ | |
2893 | "kp-0", /* 0xffb0 */ | |
2894 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2895 | 0, /* 0xffba */ | |
2896 | 0, 0, | |
2897 | "kp-equal", /* 0xffbd */ | |
2898 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2899 | "f2", |
2900 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2901 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2902 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2903 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2904 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2905 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2906 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2907 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2908 | }; |
2909 | ||
df0f2ba1 | 2910 | static char *lispy_mouse_names[] = |
284f4730 JB |
2911 | { |
2912 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2913 | }; | |
2914 | ||
3c370943 | 2915 | /* Scroll bar parts. */ |
4bb994d1 JB |
2916 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2917 | ||
3c370943 JB |
2918 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2919 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2920 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2921 | }; | |
2922 | ||
2923 | ||
7b4aedb9 | 2924 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2925 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2926 | |
2927 | The elements have the form | |
2928 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2929 | where REST is the cdr of a position as it would be reported in the event. | |
2930 | ||
2931 | The make_lispy_event function stores positions here to tell the | |
2932 | difference between click and drag events, and to store the starting | |
2933 | location to be included in drag events. */ | |
2934 | ||
2935 | static Lisp_Object button_down_location; | |
88cb0656 | 2936 | |
fbcd35bd JB |
2937 | /* Information about the most recent up-going button event: Which |
2938 | button, what location, and what time. */ | |
2939 | ||
559f9d04 RS |
2940 | static int last_mouse_button; |
2941 | static int last_mouse_x; | |
2942 | static int last_mouse_y; | |
2943 | static unsigned long button_down_time; | |
fbcd35bd | 2944 | |
564dc952 JB |
2945 | /* The maximum time between clicks to make a double-click, |
2946 | or Qnil to disable double-click detection, | |
2947 | or Qt for no time limit. */ | |
2948 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2949 | |
2950 | /* The number of clicks in this multiple-click. */ | |
2951 | ||
2952 | int double_click_count; | |
2953 | ||
284f4730 JB |
2954 | /* Given a struct input_event, build the lisp event which represents |
2955 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2956 | movement buffer, which should have a movement event in it. |
2957 | ||
2958 | Note that events must be passed to this function in the order they | |
2959 | are received; this function stores the location of button presses | |
2960 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2961 | |
2962 | static Lisp_Object | |
2963 | make_lispy_event (event) | |
2964 | struct input_event *event; | |
2965 | { | |
79a7046c RS |
2966 | int i; |
2967 | ||
0220c518 | 2968 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 2969 | { |
284f4730 JB |
2970 | /* A simple keystroke. */ |
2971 | case ascii_keystroke: | |
86e5706b | 2972 | { |
9343ab07 | 2973 | Lisp_Object lispy_c; |
e9bf89a0 | 2974 | int c = event->code & 0377; |
5a1c6df8 JB |
2975 | /* Turn ASCII characters into control characters |
2976 | when proper. */ | |
2977 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2978 | c = make_ctrl_char (c); |
2979 | ||
2980 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2981 | just above, and the shift key was taken care of by the X code, | |
2982 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2983 | c |= (event->modifiers |
2984 | & (meta_modifier | alt_modifier | |
2985 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2986 | button_down_time = 0; |
bb9e9bed | 2987 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2988 | return lispy_c; |
86e5706b | 2989 | } |
284f4730 JB |
2990 | |
2991 | /* A function key. The symbol may need to have modifier prefixes | |
2992 | tacked onto it. */ | |
2993 | case non_ascii_keystroke: | |
559f9d04 | 2994 | button_down_time = 0; |
e9bf89a0 RS |
2995 | |
2996 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2997 | if (event->code == lispy_accent_codes[i]) | |
2998 | return modify_event_symbol (i, | |
2999 | event->modifiers, | |
80e4aa30 | 3000 | Qfunction_key, Qnil, |
e9bf89a0 RS |
3001 | lispy_accent_keys, &accent_key_syms, |
3002 | (sizeof (lispy_accent_keys) | |
3003 | / sizeof (lispy_accent_keys[0]))); | |
3004 | ||
270a208f | 3005 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
3006 | if (event->code & (1 << 28)) |
3007 | { | |
3008 | /* We need to use an alist rather than a vector as the cache | |
3009 | since we can't make a vector long enuf. */ | |
142e6c73 KH |
3010 | if (NILP (current_kboard->system_key_syms)) |
3011 | current_kboard->system_key_syms = Fcons (Qnil, Qnil); | |
2c834fb3 | 3012 | return modify_event_symbol (event->code, |
80e4aa30 | 3013 | event->modifiers, |
7c97ffdc KH |
3014 | Qfunction_key, |
3015 | current_kboard->Vsystem_key_alist, | |
142e6c73 KH |
3016 | 0, ¤t_kboard->system_key_syms, |
3017 | (unsigned)-1); | |
80e4aa30 RS |
3018 | } |
3019 | ||
e9bf89a0 RS |
3020 | return modify_event_symbol (event->code - 0xff00, |
3021 | event->modifiers, | |
80e4aa30 | 3022 | Qfunction_key, Qnil, |
284f4730 JB |
3023 | lispy_function_keys, &func_key_syms, |
3024 | (sizeof (lispy_function_keys) | |
3025 | / sizeof (lispy_function_keys[0]))); | |
3026 | break; | |
3027 | ||
514354e9 | 3028 | #ifdef HAVE_MOUSE |
df0f2ba1 | 3029 | /* A mouse click. Figure out where it is, decide whether it's |
88cb0656 | 3030 | a press, click or drag, and build the appropriate structure. */ |
284f4730 | 3031 | case mouse_click: |
3c370943 | 3032 | case scroll_bar_click: |
284f4730 | 3033 | { |
e9bf89a0 | 3034 | int button = event->code; |
559f9d04 | 3035 | int is_double; |
7b4aedb9 | 3036 | Lisp_Object position; |
dbc4e1c1 JB |
3037 | Lisp_Object *start_pos_ptr; |
3038 | Lisp_Object start_pos; | |
284f4730 | 3039 | |
7b4aedb9 | 3040 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
3041 | abort (); |
3042 | ||
7b4aedb9 JB |
3043 | /* Build the position as appropriate for this mouse click. */ |
3044 | if (event->kind == mouse_click) | |
284f4730 | 3045 | { |
7b4aedb9 | 3046 | int part; |
598a9fa7 | 3047 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 3048 | Lisp_Object window; |
7b4aedb9 | 3049 | Lisp_Object posn; |
9e20143a RS |
3050 | int row, column; |
3051 | ||
5da3133a RS |
3052 | /* Ignore mouse events that were made on frame that |
3053 | have been deleted. */ | |
3054 | if (! FRAME_LIVE_P (f)) | |
3055 | return Qnil; | |
3056 | ||
9e20143a | 3057 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
6c6a9be8 | 3058 | &column, &row, NULL, 1); |
7b4aedb9 | 3059 | |
eef045bf RS |
3060 | #ifndef USE_X_TOOLKIT |
3061 | /* In the non-toolkit version, clicks on the menu bar | |
3062 | are ordinary button events in the event buffer. | |
3063 | Distinguish them, and invoke the menu. | |
3064 | ||
3065 | (In the toolkit version, the toolkit handles the menu bar | |
3066 | and Emacs doesn't know about it until after the user | |
3067 | makes a selection.) */ | |
3068 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f)) | |
bb936752 | 3069 | { |
b7c49376 | 3070 | Lisp_Object items, item; |
0a0e8fe6 RS |
3071 | int hpos; |
3072 | int i; | |
3073 | ||
3074 | /* Activate the menu bar on the down event. If the | |
3075 | up event comes in before the menu code can deal with it, | |
3076 | just ignore it. */ | |
3077 | if (! (event->modifiers & down_modifier)) | |
3078 | return Qnil; | |
0aafc975 | 3079 | |
f2ae6b3f | 3080 | item = Qnil; |
5ec75a55 | 3081 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 3082 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
3083 | { |
3084 | Lisp_Object pos, string; | |
b7c49376 RS |
3085 | string = XVECTOR (items)->contents[i + 1]; |
3086 | pos = XVECTOR (items)->contents[i + 2]; | |
3087 | if (NILP (string)) | |
3088 | break; | |
9e20143a RS |
3089 | if (column >= XINT (pos) |
3090 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
3091 | { |
3092 | item = XVECTOR (items)->contents[i]; | |
3093 | break; | |
3094 | } | |
5ec75a55 | 3095 | } |
9e20143a | 3096 | |
5ec75a55 RS |
3097 | position |
3098 | = Fcons (event->frame_or_window, | |
3099 | Fcons (Qmenu_bar, | |
3100 | Fcons (Fcons (event->x, event->y), | |
3101 | Fcons (make_number (event->timestamp), | |
3102 | Qnil)))); | |
3103 | ||
b7c49376 | 3104 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 3105 | } |
eef045bf | 3106 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 3107 | |
9e20143a | 3108 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 3109 | |
8c18cbfb | 3110 | if (!WINDOWP (window)) |
78ced549 RS |
3111 | { |
3112 | window = event->frame_or_window; | |
3113 | posn = Qnil; | |
3114 | } | |
284f4730 | 3115 | else |
7b4aedb9 | 3116 | { |
9e20143a RS |
3117 | int pixcolumn, pixrow; |
3118 | column -= XINT (XWINDOW (window)->left); | |
3119 | row -= XINT (XWINDOW (window)->top); | |
3120 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
3121 | XSETINT (event->x, pixcolumn); | |
3122 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 3123 | |
7b4aedb9 JB |
3124 | if (part == 1) |
3125 | posn = Qmode_line; | |
3126 | else if (part == 2) | |
3127 | posn = Qvertical_line; | |
3128 | else | |
18cd2eeb KH |
3129 | XSETINT (posn, |
3130 | buffer_posn_from_coords (XWINDOW (window), | |
3131 | column, row)); | |
7b4aedb9 JB |
3132 | } |
3133 | ||
5ec75a55 RS |
3134 | position |
3135 | = Fcons (window, | |
3136 | Fcons (posn, | |
3137 | Fcons (Fcons (event->x, event->y), | |
3138 | Fcons (make_number (event->timestamp), | |
3139 | Qnil)))); | |
284f4730 | 3140 | } |
7b4aedb9 | 3141 | else |
88cb0656 | 3142 | { |
9e20143a RS |
3143 | Lisp_Object window; |
3144 | Lisp_Object portion_whole; | |
3145 | Lisp_Object part; | |
3146 | ||
3147 | window = event->frame_or_window; | |
3148 | portion_whole = Fcons (event->x, event->y); | |
3149 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
3150 | |
3151 | position = | |
3152 | Fcons (window, | |
3c370943 | 3153 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
3154 | Fcons (portion_whole, |
3155 | Fcons (make_number (event->timestamp), | |
9e20143a | 3156 | Fcons (part, Qnil))))); |
88cb0656 JB |
3157 | } |
3158 | ||
dbc4e1c1 JB |
3159 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
3160 | ||
3161 | start_pos = *start_pos_ptr; | |
3162 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3163 | |
559f9d04 RS |
3164 | is_double = (button == last_mouse_button |
3165 | && XINT (event->x) == last_mouse_x | |
3166 | && XINT (event->y) == last_mouse_y | |
3167 | && button_down_time != 0 | |
3168 | && (EQ (Vdouble_click_time, Qt) | |
3169 | || (INTEGERP (Vdouble_click_time) | |
3170 | && ((int)(event->timestamp - button_down_time) | |
3171 | < XINT (Vdouble_click_time))))); | |
3172 | last_mouse_button = button; | |
3173 | last_mouse_x = XINT (event->x); | |
3174 | last_mouse_y = XINT (event->y); | |
3175 | ||
7b4aedb9 JB |
3176 | /* If this is a button press, squirrel away the location, so |
3177 | we can decide later whether it was a click or a drag. */ | |
3178 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3179 | { |
3180 | if (is_double) | |
3181 | { | |
3182 | double_click_count++; | |
3183 | event->modifiers |= ((double_click_count > 2) | |
3184 | ? triple_modifier | |
3185 | : double_modifier); | |
3186 | } | |
3187 | else | |
3188 | double_click_count = 1; | |
3189 | button_down_time = event->timestamp; | |
3190 | *start_pos_ptr = Fcopy_alist (position); | |
3191 | } | |
7b4aedb9 | 3192 | |
88cb0656 | 3193 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3194 | see if this was a click or a drag. */ |
88cb0656 JB |
3195 | else if (event->modifiers & up_modifier) |
3196 | { | |
48e416d4 RS |
3197 | /* If we did not see a down before this up, |
3198 | ignore the up. Probably this happened because | |
3199 | the down event chose a menu item. | |
3200 | It would be an annoyance to treat the release | |
3201 | of the button that chose the menu item | |
3202 | as a separate event. */ | |
3203 | ||
8c18cbfb | 3204 | if (!CONSP (start_pos)) |
48e416d4 RS |
3205 | return Qnil; |
3206 | ||
88cb0656 | 3207 | event->modifiers &= ~up_modifier; |
48e416d4 | 3208 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3209 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3210 | event->modifiers |= click_modifier; |
3211 | else | |
48e416d4 | 3212 | #endif |
dbc4e1c1 JB |
3213 | { |
3214 | /* The third element of every position should be the (x,y) | |
3215 | pair. */ | |
9b8eb840 | 3216 | Lisp_Object down; |
dbc4e1c1 | 3217 | |
9b8eb840 | 3218 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3219 | if (EQ (event->x, XCONS (down)->car) |
3220 | && EQ (event->y, XCONS (down)->cdr)) | |
3221 | { | |
bc536d84 | 3222 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3223 | } |
3224 | else | |
3225 | { | |
559f9d04 | 3226 | button_down_time = 0; |
fbcd35bd JB |
3227 | event->modifiers |= drag_modifier; |
3228 | } | |
bc536d84 RS |
3229 | /* Don't check is_double; treat this as multiple |
3230 | if the down-event was multiple. */ | |
3231 | if (double_click_count > 1) | |
3232 | event->modifiers |= ((double_click_count > 2) | |
3233 | ? triple_modifier | |
3234 | : double_modifier); | |
dbc4e1c1 | 3235 | } |
88cb0656 JB |
3236 | } |
3237 | else | |
3238 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3239 | the up_modifier set. */ |
88cb0656 JB |
3240 | abort (); |
3241 | ||
88cb0656 | 3242 | { |
7b4aedb9 | 3243 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3244 | Lisp_Object head; |
3245 | ||
3246 | head = modify_event_symbol (button, | |
3247 | event->modifiers, | |
3248 | Qmouse_click, Qnil, | |
3249 | lispy_mouse_names, &mouse_syms, | |
3250 | (sizeof (lispy_mouse_names) | |
3251 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3252 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3253 | return Fcons (head, |
3254 | Fcons (start_pos, | |
3255 | Fcons (position, | |
3256 | Qnil))); | |
fbcd35bd JB |
3257 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3258 | return Fcons (head, | |
3259 | Fcons (position, | |
3260 | Fcons (make_number (double_click_count), | |
3261 | Qnil))); | |
88cb0656 JB |
3262 | else |
3263 | return Fcons (head, | |
7b4aedb9 | 3264 | Fcons (position, |
88cb0656 JB |
3265 | Qnil)); |
3266 | } | |
284f4730 | 3267 | } |
514354e9 | 3268 | #endif /* HAVE_MOUSE */ |
284f4730 | 3269 | |
2470a66f KH |
3270 | #ifdef USE_X_TOOLKIT |
3271 | case menu_bar_event: | |
3272 | /* The event value is in the cdr of the frame_or_window slot. */ | |
3273 | if (!CONSP (event->frame_or_window)) | |
3274 | abort (); | |
3275 | return XCONS (event->frame_or_window)->cdr; | |
3276 | #endif | |
3277 | ||
284f4730 JB |
3278 | /* The 'kind' field of the event is something we don't recognize. */ |
3279 | default: | |
48e416d4 | 3280 | abort (); |
284f4730 JB |
3281 | } |
3282 | } | |
3283 | ||
514354e9 | 3284 | #ifdef HAVE_MOUSE |
6cbff1cb | 3285 | |
284f4730 | 3286 | static Lisp_Object |
7b4aedb9 | 3287 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3288 | FRAME_PTR frame; |
7b4aedb9 | 3289 | Lisp_Object bar_window; |
3c370943 | 3290 | enum scroll_bar_part part; |
284f4730 | 3291 | Lisp_Object x, y; |
e5d77022 | 3292 | unsigned long time; |
284f4730 | 3293 | { |
68553292 | 3294 | #ifdef MULTI_FRAME |
3c370943 | 3295 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3296 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3297 | { |
9b8eb840 | 3298 | Lisp_Object part_sym; |
4bb994d1 | 3299 | |
9b8eb840 | 3300 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3301 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3302 | (Fcons (Fcons (bar_window, |
3c370943 | 3303 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3304 | Fcons (Fcons (x, y), |
3305 | Fcons (make_number (time), | |
cb5df6ae | 3306 | Fcons (part_sym, |
4bb994d1 JB |
3307 | Qnil))))), |
3308 | Qnil))); | |
3309 | } | |
3310 | ||
3311 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3312 | else |
68553292 | 3313 | #endif /* MULTI_FRAME */ |
284f4730 | 3314 | { |
4bb994d1 | 3315 | int area; |
9e20143a | 3316 | Lisp_Object window; |
4bb994d1 | 3317 | Lisp_Object posn; |
9e20143a RS |
3318 | int column, row; |
3319 | ||
68553292 | 3320 | #ifdef MULTI_FRAME |
9e20143a | 3321 | if (frame) |
68553292 RS |
3322 | #else |
3323 | if (1) | |
3324 | #endif | |
047688cb RS |
3325 | { |
3326 | /* It's in a frame; which window on that frame? */ | |
6c6a9be8 KH |
3327 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, |
3328 | NULL, 1); | |
047688cb RS |
3329 | window = window_from_coordinates (frame, column, row, &area); |
3330 | } | |
9e20143a RS |
3331 | else |
3332 | window = Qnil; | |
4bb994d1 | 3333 | |
8c18cbfb | 3334 | if (WINDOWP (window)) |
4bb994d1 | 3335 | { |
9e20143a RS |
3336 | int pixcolumn, pixrow; |
3337 | column -= XINT (XWINDOW (window)->left); | |
3338 | row -= XINT (XWINDOW (window)->top); | |
3339 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3340 | XSETINT (x, pixcolumn); | |
3341 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3342 | |
3343 | if (area == 1) | |
3344 | posn = Qmode_line; | |
3345 | else if (area == 2) | |
3346 | posn = Qvertical_line; | |
3347 | else | |
18cd2eeb KH |
3348 | XSETINT (posn, |
3349 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3350 | } |
68553292 | 3351 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3352 | else if (frame != 0) |
3353 | { | |
18cd2eeb | 3354 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3355 | posn = Qnil; |
3356 | } | |
68553292 | 3357 | #endif |
284f4730 | 3358 | else |
4bb994d1 JB |
3359 | { |
3360 | window = Qnil; | |
3361 | posn = Qnil; | |
bb9e9bed KH |
3362 | XSETFASTINT (x, 0); |
3363 | XSETFASTINT (y, 0); | |
4bb994d1 | 3364 | } |
284f4730 | 3365 | |
4bb994d1 JB |
3366 | return Fcons (Qmouse_movement, |
3367 | Fcons (Fcons (window, | |
3368 | Fcons (posn, | |
3369 | Fcons (Fcons (x, y), | |
3370 | Fcons (make_number (time), | |
3371 | Qnil)))), | |
3372 | Qnil)); | |
3373 | } | |
284f4730 JB |
3374 | } |
3375 | ||
514354e9 | 3376 | #endif /* HAVE_MOUSE */ |
6cbff1cb | 3377 | |
cd21b839 JB |
3378 | /* Construct a switch frame event. */ |
3379 | static Lisp_Object | |
3380 | make_lispy_switch_frame (frame) | |
3381 | Lisp_Object frame; | |
3382 | { | |
3383 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3384 | } | |
0a7f1fc0 JB |
3385 | \f |
3386 | /* Manipulating modifiers. */ | |
284f4730 | 3387 | |
0a7f1fc0 | 3388 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3389 | |
0a7f1fc0 JB |
3390 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3391 | SYMBOL's name of the end of the modifiers; the string from this | |
3392 | position is the unmodified symbol name. | |
284f4730 | 3393 | |
0a7f1fc0 | 3394 | This doesn't use any caches. */ |
6da3dd3a | 3395 | |
0a7f1fc0 JB |
3396 | static int |
3397 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3398 | Lisp_Object symbol; |
0a7f1fc0 | 3399 | int *modifier_end; |
284f4730 JB |
3400 | { |
3401 | struct Lisp_String *name; | |
3402 | int i; | |
3403 | int modifiers; | |
284f4730 JB |
3404 | |
3405 | CHECK_SYMBOL (symbol, 1); | |
df0f2ba1 | 3406 | |
284f4730 JB |
3407 | modifiers = 0; |
3408 | name = XSYMBOL (symbol)->name; | |
3409 | ||
0a7f1fc0 | 3410 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
3411 | { |
3412 | int this_mod_end = 0; | |
3413 | int this_mod = 0; | |
284f4730 | 3414 | |
6da3dd3a RS |
3415 | /* See if the name continues with a modifier word. |
3416 | Check that the word appears, but don't check what follows it. | |
3417 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 3418 | |
6da3dd3a RS |
3419 | switch (name->data[i]) |
3420 | { | |
3421 | #define SINGLE_LETTER_MOD(BIT) \ | |
3422 | (this_mod_end = i + 1, this_mod = BIT) | |
3423 | ||
6da3dd3a RS |
3424 | case 'A': |
3425 | SINGLE_LETTER_MOD (alt_modifier); | |
3426 | break; | |
284f4730 | 3427 | |
6da3dd3a RS |
3428 | case 'C': |
3429 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3430 | break; | |
284f4730 | 3431 | |
6da3dd3a RS |
3432 | case 'H': |
3433 | SINGLE_LETTER_MOD (hyper_modifier); | |
3434 | break; | |
3435 | ||
6da3dd3a RS |
3436 | case 'M': |
3437 | SINGLE_LETTER_MOD (meta_modifier); | |
3438 | break; | |
3439 | ||
6da3dd3a RS |
3440 | case 'S': |
3441 | SINGLE_LETTER_MOD (shift_modifier); | |
3442 | break; | |
3443 | ||
3444 | case 's': | |
6da3dd3a RS |
3445 | SINGLE_LETTER_MOD (super_modifier); |
3446 | break; | |
3447 | ||
0a7f1fc0 | 3448 | #undef SINGLE_LETTER_MOD |
6da3dd3a RS |
3449 | } |
3450 | ||
3451 | /* If we found no modifier, stop looking for them. */ | |
3452 | if (this_mod_end == 0) | |
3453 | break; | |
3454 | ||
3455 | /* Check there is a dash after the modifier, so that it | |
3456 | really is a modifier. */ | |
3457 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
3458 | break; | |
3459 | ||
3460 | /* This modifier is real; look for another. */ | |
3461 | modifiers |= this_mod; | |
3462 | i = this_mod_end + 1; | |
3463 | } | |
284f4730 | 3464 | |
0a7f1fc0 | 3465 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3466 | if (! (modifiers & (down_modifier | drag_modifier |
3467 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3468 | && i + 7 == name->size |
4bb994d1 | 3469 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3470 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3471 | modifiers |= click_modifier; |
3472 | ||
3473 | if (modifier_end) | |
3474 | *modifier_end = i; | |
3475 | ||
3476 | return modifiers; | |
3477 | } | |
3478 | ||
0a7f1fc0 JB |
3479 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
3480 | prepended to the string BASE[0..BASE_LEN-1]. | |
3481 | This doesn't use any caches. */ | |
3482 | static Lisp_Object | |
3483 | apply_modifiers_uncached (modifiers, base, base_len) | |
3484 | int modifiers; | |
3485 | char *base; | |
3486 | int base_len; | |
3487 | { | |
3488 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3489 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3490 | reference to it. */ | |
3491 | char *new_mods = | |
fbcd35bd | 3492 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3493 | int mod_len; |
284f4730 | 3494 | |
284f4730 | 3495 | { |
0a7f1fc0 JB |
3496 | char *p = new_mods; |
3497 | ||
3498 | /* Only the event queue may use the `up' modifier; it should always | |
3499 | be turned into a click or drag event before presented to lisp code. */ | |
3500 | if (modifiers & up_modifier) | |
3501 | abort (); | |
3502 | ||
3503 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3504 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3505 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3506 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3507 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3508 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3509 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3510 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3511 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3512 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3513 | /* The click modifier is denoted by the absence of other modifiers. */ |
3514 | ||
3515 | *p = '\0'; | |
3516 | ||
3517 | mod_len = p - new_mods; | |
3518 | } | |
284f4730 | 3519 | |
0a7f1fc0 | 3520 | { |
9b8eb840 | 3521 | Lisp_Object new_name; |
df0f2ba1 | 3522 | |
9b8eb840 | 3523 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3524 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3525 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3526 | |
3527 | return Fintern (new_name, Qnil); | |
3528 | } | |
3529 | } | |
3530 | ||
3531 | ||
0a7f1fc0 JB |
3532 | static char *modifier_names[] = |
3533 | { | |
fbcd35bd | 3534 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3535 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3536 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3537 | }; |
80645119 | 3538 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3539 | |
3540 | static Lisp_Object modifier_symbols; | |
3541 | ||
3542 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3543 | static Lisp_Object | |
3544 | lispy_modifier_list (modifiers) | |
3545 | int modifiers; | |
3546 | { | |
3547 | Lisp_Object modifier_list; | |
3548 | int i; | |
3549 | ||
3550 | modifier_list = Qnil; | |
80645119 | 3551 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3552 | if (modifiers & (1<<i)) |
80645119 JB |
3553 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3554 | modifier_list); | |
0a7f1fc0 JB |
3555 | |
3556 | return modifier_list; | |
3557 | } | |
3558 | ||
3559 | ||
3560 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3561 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3562 | MASK is the set of modifiers present in SYMBOL's name. | |
3563 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3564 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3565 | Qevent_symbol_elements property. */ | |
3d31316f | 3566 | |
0a7f1fc0 JB |
3567 | static Lisp_Object |
3568 | parse_modifiers (symbol) | |
3569 | Lisp_Object symbol; | |
3570 | { | |
9b8eb840 | 3571 | Lisp_Object elements; |
0a7f1fc0 | 3572 | |
9b8eb840 | 3573 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3574 | if (CONSP (elements)) |
3575 | return elements; | |
3576 | else | |
3577 | { | |
3578 | int end; | |
ec0faad2 | 3579 | int modifiers = parse_modifiers_uncached (symbol, &end); |
9b8eb840 | 3580 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3581 | Lisp_Object mask; |
3582 | ||
9b8eb840 KH |
3583 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3584 | XSYMBOL (symbol)->name->size - end), | |
3585 | Qnil); | |
3586 | ||
ec0faad2 | 3587 | if (modifiers & ~(((EMACS_INT)1 << VALBITS) - 1)) |
734fef94 | 3588 | abort (); |
bb9e9bed | 3589 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3590 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3591 | ||
3592 | /* Cache the parsing results on SYMBOL. */ | |
3593 | Fput (symbol, Qevent_symbol_element_mask, | |
3594 | elements); | |
3595 | Fput (symbol, Qevent_symbol_elements, | |
3596 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3597 | ||
3598 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3599 | it would be nice to put that in unmodified's cache. | |
3600 | But we can't, since we're not sure that parse_modifiers is | |
3601 | canonical. */ | |
3602 | ||
3603 | return elements; | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3608 | BASE must be unmodified. | |
3609 | ||
3610 | This is like apply_modifiers_uncached, but uses BASE's | |
3611 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3612 | Qevent_symbol_elements properties, since it has that info anyway. |
3613 | ||
3614 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3615 | the modified symbol. */ | |
0a7f1fc0 JB |
3616 | static Lisp_Object |
3617 | apply_modifiers (modifiers, base) | |
3618 | int modifiers; | |
3619 | Lisp_Object base; | |
3620 | { | |
7b4aedb9 | 3621 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3622 | |
80645119 | 3623 | /* Mask out upper bits. We don't know where this value's been. */ |
ec0faad2 | 3624 | modifiers &= ((EMACS_INT)1 << VALBITS) - 1; |
80645119 | 3625 | |
0a7f1fc0 | 3626 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3627 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3628 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3629 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3630 | |
3631 | if (CONSP (entry)) | |
7b4aedb9 JB |
3632 | new_symbol = XCONS (entry)->cdr; |
3633 | else | |
3634 | { | |
df0f2ba1 | 3635 | /* We have to create the symbol ourselves. */ |
7b4aedb9 JB |
3636 | new_symbol = apply_modifiers_uncached (modifiers, |
3637 | XSYMBOL (base)->name->data, | |
3638 | XSYMBOL (base)->name->size); | |
3639 | ||
3640 | /* Add the new symbol to the base's cache. */ | |
3641 | entry = Fcons (index, new_symbol); | |
3642 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3643 | ||
3644 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3645 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3646 | Fput (new_symbol, Qevent_symbol_element_mask, |
3647 | Fcons (base, Fcons (index, Qnil))); | |
3648 | Fput (new_symbol, Qevent_symbol_elements, | |
3649 | Fcons (base, lispy_modifier_list (modifiers))); | |
3650 | } | |
0a7f1fc0 | 3651 | |
df0f2ba1 | 3652 | /* Make sure this symbol is of the same kind as BASE. |
7b4aedb9 JB |
3653 | |
3654 | You'd think we could just set this once and for all when we | |
3655 | intern the symbol above, but reorder_modifiers may call us when | |
3656 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3657 | because it has a Qmodifier_cache property it must have its |
3658 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3659 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3660 | { | |
9b8eb840 | 3661 | Lisp_Object kind; |
7b4aedb9 | 3662 | |
9b8eb840 | 3663 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3664 | if (! NILP (kind)) |
3665 | Fput (new_symbol, Qevent_kind, kind); | |
3666 | } | |
3667 | ||
3668 | return new_symbol; | |
0a7f1fc0 JB |
3669 | } |
3670 | ||
3671 | ||
3672 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3673 | return a symbol with the modifiers placed in the canonical order. | |
3674 | Canonical order is alphabetical, except for down and drag, which | |
3675 | always come last. The 'click' modifier is never written out. | |
3676 | ||
3677 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3678 | and M-C-foo end up being equivalent in the keymap. */ | |
3679 | ||
3680 | Lisp_Object | |
3681 | reorder_modifiers (symbol) | |
3682 | Lisp_Object symbol; | |
3683 | { | |
3684 | /* It's hopefully okay to write the code this way, since everything | |
3685 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3686 | Lisp_Object parsed; |
0a7f1fc0 | 3687 | |
9b8eb840 | 3688 | parsed = parse_modifiers (symbol); |
54593ed9 | 3689 | return apply_modifiers ((int) XINT (XCONS (XCONS (parsed)->cdr)->car), |
0a7f1fc0 JB |
3690 | XCONS (parsed)->car); |
3691 | } | |
3692 | ||
3693 | ||
284f4730 JB |
3694 | /* For handling events, we often want to produce a symbol whose name |
3695 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3696 | to some base, like the name of a function key or mouse button. | |
3697 | modify_event_symbol produces symbols of this sort. | |
3698 | ||
3699 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3700 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3701 | in the table. | |
3702 | ||
80e4aa30 RS |
3703 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3704 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3705 | ||
284f4730 JB |
3706 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3707 | persist between calls to modify_event_symbol that it can use to | |
3708 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3709 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3710 | |
3711 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
df0f2ba1 | 3712 | |
284f4730 JB |
3713 | MODIFIERS is a set of modifier bits (as given in struct input_events) |
3714 | whose prefixes should be applied to the symbol name. | |
3715 | ||
3716 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
df0f2ba1 | 3717 | the returned symbol. |
88cb0656 JB |
3718 | |
3719 | The symbols we create are supposed to have an | |
eb8c3be9 | 3720 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3721 | in the symbol's name. */ |
3722 | ||
284f4730 | 3723 | static Lisp_Object |
80e4aa30 RS |
3724 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3725 | name_table, symbol_table, table_size) | |
284f4730 JB |
3726 | int symbol_num; |
3727 | unsigned modifiers; | |
3728 | Lisp_Object symbol_kind; | |
80e4aa30 | 3729 | Lisp_Object name_alist; |
284f4730 JB |
3730 | char **name_table; |
3731 | Lisp_Object *symbol_table; | |
2c834fb3 | 3732 | unsigned int table_size; |
284f4730 | 3733 | { |
80e4aa30 RS |
3734 | Lisp_Object value; |
3735 | Lisp_Object symbol_int; | |
3736 | ||
2c834fb3 KH |
3737 | /* Get rid of the "vendor-specific" bit here. */ |
3738 | XSETINT (symbol_int, symbol_num & 0xffffff); | |
284f4730 JB |
3739 | |
3740 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3741 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3742 | return Qnil; |
284f4730 | 3743 | |
80e4aa30 RS |
3744 | if (CONSP (*symbol_table)) |
3745 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3746 | ||
0a7f1fc0 | 3747 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3748 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3749 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3750 | we've never used that symbol before. */ | |
80e4aa30 | 3751 | else |
88cb0656 | 3752 | { |
80e4aa30 RS |
3753 | if (! VECTORP (*symbol_table) |
3754 | || XVECTOR (*symbol_table)->size != table_size) | |
3755 | { | |
3756 | Lisp_Object size; | |
0a7f1fc0 | 3757 | |
bb9e9bed | 3758 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3759 | *symbol_table = Fmake_vector (size, Qnil); |
3760 | } | |
284f4730 | 3761 | |
80e4aa30 RS |
3762 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3763 | } | |
284f4730 | 3764 | |
0a7f1fc0 | 3765 | /* Have we already used this symbol before? */ |
80e4aa30 | 3766 | if (NILP (value)) |
284f4730 | 3767 | { |
0a7f1fc0 | 3768 | /* No; let's create it. */ |
80e4aa30 | 3769 | if (!NILP (name_alist)) |
b64b4075 | 3770 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3771 | else if (name_table[symbol_num]) |
3772 | value = intern (name_table[symbol_num]); | |
b64b4075 | 3773 | |
2c834fb3 KH |
3774 | #ifdef HAVE_X_WINDOWS |
3775 | if (NILP (value)) | |
3776 | { | |
3777 | char *name = x_get_keysym_name (symbol_num); | |
3778 | if (name) | |
3779 | value = intern (name); | |
3780 | } | |
3781 | #endif | |
3782 | ||
b64b4075 | 3783 | if (NILP (value)) |
d1f50460 RS |
3784 | { |
3785 | char buf[20]; | |
3786 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3787 | value = intern (buf); |
d1f50460 | 3788 | } |
0a7f1fc0 | 3789 | |
80e4aa30 RS |
3790 | if (CONSP (*symbol_table)) |
3791 | *symbol_table = Fcons (value, *symbol_table); | |
3792 | else | |
3793 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3794 | ||
df0f2ba1 | 3795 | /* Fill in the cache entries for this symbol; this also |
0a7f1fc0 JB |
3796 | builds the Qevent_symbol_elements property, which the user |
3797 | cares about. */ | |
80e4aa30 RS |
3798 | apply_modifiers (modifiers & click_modifier, value); |
3799 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3800 | } |
88cb0656 | 3801 | |
0a7f1fc0 | 3802 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3803 | return apply_modifiers (modifiers, value); |
284f4730 | 3804 | } |
6da3dd3a RS |
3805 | \f |
3806 | /* Convert a list that represents an event type, | |
3807 | such as (ctrl meta backspace), into the usual representation of that | |
3808 | event type as a number or a symbol. */ | |
3809 | ||
a1706c30 KH |
3810 | DEFUN ("event-convert-list", Fevent_convert_list, Sevent_convert_list, 1, 1, 0, |
3811 | "Convert the event description LIST to an event type.\n\ | |
3812 | LIST should contain one base event type (a character or symbol)\n\ | |
3813 | and zero or more modifier names (control, meta, hyper, super, shift, alt,\n\ | |
3814 | drag, down, double or triple).\n\ | |
3815 | The return value is an event type (a character or symbol) which\n\ | |
3816 | has the same base event type and all the specified modifiers.") | |
3817 | (event) | |
6da3dd3a RS |
3818 | Lisp_Object event; |
3819 | { | |
3820 | Lisp_Object base; | |
3821 | int modifiers = 0; | |
3822 | Lisp_Object rest; | |
3823 | ||
3824 | base = Qnil; | |
3825 | rest = event; | |
3826 | while (CONSP (rest)) | |
3827 | { | |
3828 | Lisp_Object elt; | |
3829 | int this = 0; | |
3830 | ||
3831 | elt = XCONS (rest)->car; | |
3832 | ||
3d31316f | 3833 | /* Given a symbol, see if it is a modifier name. */ |
6da3dd3a | 3834 | if (SYMBOLP (elt)) |
3d31316f | 3835 | this = parse_solitary_modifier (elt); |
6da3dd3a RS |
3836 | |
3837 | if (this != 0) | |
3838 | modifiers |= this; | |
3839 | else if (!NILP (base)) | |
3840 | error ("Two bases given in one event"); | |
3841 | else | |
3842 | base = elt; | |
3843 | ||
3844 | rest = XCONS (rest)->cdr; | |
3845 | } | |
3846 | ||
3d31316f RS |
3847 | /* Let the symbol A refer to the character A. */ |
3848 | if (SYMBOLP (base) && XSYMBOL (base)->name->size == 1) | |
3849 | XSETINT (base, XSYMBOL (base)->name->data[0]); | |
3850 | ||
6da3dd3a RS |
3851 | if (INTEGERP (base)) |
3852 | { | |
3d31316f RS |
3853 | /* Turn (shift a) into A. */ |
3854 | if ((modifiers & shift_modifier) != 0 | |
3855 | && (XINT (base) >= 'a' && XINT (base) <= 'z')) | |
3856 | { | |
3857 | XSETINT (base, XINT (base) - ('a' - 'A')); | |
3858 | modifiers &= ~shift_modifier; | |
3859 | } | |
3860 | ||
3861 | /* Turn (control a) into C-a. */ | |
6da3dd3a | 3862 | if (modifiers & ctrl_modifier) |
3d31316f | 3863 | return make_number ((modifiers & ~ctrl_modifier) |
6da3dd3a RS |
3864 | | make_ctrl_char (XINT (base))); |
3865 | else | |
3866 | return make_number (modifiers | XINT (base)); | |
3867 | } | |
3868 | else if (SYMBOLP (base)) | |
3869 | return apply_modifiers (modifiers, base); | |
3870 | else | |
3871 | error ("Invalid base event"); | |
3872 | } | |
3873 | ||
3d31316f RS |
3874 | /* Try to recognize SYMBOL as a modifier name. |
3875 | Return the modifier flag bit, or 0 if not recognized. */ | |
3876 | ||
3877 | static int | |
3878 | parse_solitary_modifier (symbol) | |
3879 | Lisp_Object symbol; | |
3880 | { | |
3881 | struct Lisp_String *name = XSYMBOL (symbol)->name; | |
3882 | ||
3883 | switch (name->data[0]) | |
3884 | { | |
3885 | #define SINGLE_LETTER_MOD(BIT) \ | |
3886 | if (name->size == 1) \ | |
3887 | return BIT; | |
3888 | ||
3889 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
3890 | if (LEN == name->size \ | |
3891 | && ! strncmp (name->data, NAME, LEN)) \ | |
3892 | return BIT; | |
3893 | ||
3894 | case 'A': | |
3895 | SINGLE_LETTER_MOD (alt_modifier); | |
3896 | break; | |
3897 | ||
3898 | case 'a': | |
3899 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
3900 | break; | |
3901 | ||
3902 | case 'C': | |
3903 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3904 | break; | |
3905 | ||
3906 | case 'c': | |
3907 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
3908 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
3909 | break; | |
3910 | ||
3911 | case 'H': | |
3912 | SINGLE_LETTER_MOD (hyper_modifier); | |
3913 | break; | |
3914 | ||
3915 | case 'h': | |
3916 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
3917 | break; | |
3918 | ||
3919 | case 'M': | |
3920 | SINGLE_LETTER_MOD (meta_modifier); | |
3921 | break; | |
3922 | ||
3923 | case 'm': | |
3924 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
3925 | break; | |
3926 | ||
3927 | case 'S': | |
3928 | SINGLE_LETTER_MOD (shift_modifier); | |
3929 | break; | |
3930 | ||
3931 | case 's': | |
3932 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
3933 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
3934 | SINGLE_LETTER_MOD (super_modifier); | |
3935 | break; | |
3936 | ||
3937 | case 'd': | |
3938 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
3939 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
3940 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
3941 | break; | |
3942 | ||
3943 | case 't': | |
3944 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
3945 | break; | |
3946 | ||
3947 | #undef SINGLE_LETTER_MOD | |
3948 | #undef MULTI_LETTER_MOD | |
3949 | } | |
3950 | ||
3951 | return 0; | |
3952 | } | |
3953 | ||
6da3dd3a RS |
3954 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. |
3955 | Such a list is not valid as an event, | |
3956 | but it can be a Lucid-style event type list. */ | |
3957 | ||
3958 | int | |
3959 | lucid_event_type_list_p (object) | |
3960 | Lisp_Object object; | |
3961 | { | |
3962 | Lisp_Object tail; | |
3963 | ||
3964 | if (! CONSP (object)) | |
3965 | return 0; | |
3966 | ||
3967 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
3968 | { | |
3969 | Lisp_Object elt; | |
3970 | elt = XCONS (tail)->car; | |
3971 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
3972 | return 0; | |
3973 | } | |
3974 | ||
3975 | return NILP (tail); | |
3976 | } | |
284f4730 | 3977 | \f |
284f4730 JB |
3978 | /* Store into *addr a value nonzero if terminal input chars are available. |
3979 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3980 | but works even if FIONREAD does not exist. | |
3981 | (In fact, this may actually read some input.) */ | |
3982 | ||
3983 | static void | |
3984 | get_input_pending (addr) | |
3985 | int *addr; | |
3986 | { | |
3987 | /* First of all, have we already counted some input? */ | |
3988 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3989 | ||
3990 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3991 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3992 | return; | |
3993 | ||
3994 | /* Try to read some input and see how much we get. */ | |
3995 | gobble_input (0); | |
3996 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3997 | } | |
3998 | ||
81931ba1 | 3999 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
4000 | |
4001 | int | |
4002 | gobble_input (expected) | |
4003 | int expected; | |
4004 | { | |
4005 | #ifndef VMS | |
4006 | #ifdef SIGIO | |
4007 | if (interrupt_input) | |
4008 | { | |
32676c08 | 4009 | SIGMASKTYPE mask; |
e065a56e | 4010 | mask = sigblockx (SIGIO); |
284f4730 | 4011 | read_avail_input (expected); |
e065a56e | 4012 | sigsetmask (mask); |
284f4730 JB |
4013 | } |
4014 | else | |
81931ba1 RS |
4015 | #ifdef POLL_FOR_INPUT |
4016 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
4017 | { | |
4018 | SIGMASKTYPE mask; | |
4019 | mask = sigblockx (SIGALRM); | |
4020 | read_avail_input (expected); | |
4021 | sigsetmask (mask); | |
4022 | } | |
4023 | else | |
87485d6f | 4024 | #endif |
284f4730 JB |
4025 | #endif |
4026 | read_avail_input (expected); | |
4027 | #endif | |
4028 | } | |
a8015ab5 | 4029 | |
241ceaf7 RS |
4030 | /* Put a buffer_switch_event in the buffer |
4031 | so that read_key_sequence will notice the new current buffer. */ | |
4032 | ||
a8015ab5 KH |
4033 | record_asynch_buffer_change () |
4034 | { | |
4035 | struct input_event event; | |
a30f0615 RS |
4036 | Lisp_Object tem; |
4037 | ||
a8015ab5 KH |
4038 | event.kind = buffer_switch_event; |
4039 | event.frame_or_window = Qnil; | |
241ceaf7 | 4040 | |
f65e6f7d | 4041 | #ifdef subprocesses |
a30f0615 RS |
4042 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
4043 | The purpose of the event is to make read_key_sequence look up the | |
4044 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
4045 | and the event could cause trouble by messing up (input-pending-p). */ | |
4046 | tem = Fwaiting_for_user_input_p (); | |
4047 | if (NILP (tem)) | |
4048 | return; | |
f65e6f7d RS |
4049 | #else |
4050 | /* We never need these events if we have no asynchronous subprocesses. */ | |
4051 | return; | |
4052 | #endif | |
a30f0615 | 4053 | |
241ceaf7 RS |
4054 | /* Make sure no interrupt happens while storing the event. */ |
4055 | #ifdef SIGIO | |
4056 | if (interrupt_input) | |
4057 | { | |
4058 | SIGMASKTYPE mask; | |
4059 | mask = sigblockx (SIGIO); | |
4060 | kbd_buffer_store_event (&event); | |
4061 | sigsetmask (mask); | |
4062 | } | |
4063 | else | |
4064 | #endif | |
4065 | { | |
4066 | stop_polling (); | |
4067 | kbd_buffer_store_event (&event); | |
4068 | start_polling (); | |
4069 | } | |
a8015ab5 | 4070 | } |
284f4730 JB |
4071 | \f |
4072 | #ifndef VMS | |
4073 | ||
4074 | /* Read any terminal input already buffered up by the system | |
4075 | into the kbd_buffer, but do not wait. | |
4076 | ||
4077 | EXPECTED should be nonzero if the caller knows there is some input. | |
4078 | ||
4079 | Except on VMS, all input is read by this function. | |
4080 | If interrupt_input is nonzero, this function MUST be called | |
4081 | only when SIGIO is blocked. | |
4082 | ||
4083 | Returns the number of keyboard chars read, or -1 meaning | |
4084 | this is a bad time to try to read input. */ | |
4085 | ||
4086 | static int | |
4087 | read_avail_input (expected) | |
4088 | int expected; | |
4089 | { | |
4090 | struct input_event buf[KBD_BUFFER_SIZE]; | |
4091 | register int i; | |
4092 | int nread; | |
4093 | ||
4094 | if (read_socket_hook) | |
4095 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
4096 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
4097 | expected, expected); | |
284f4730 JB |
4098 | else |
4099 | { | |
17270835 RS |
4100 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
4101 | the kbd_buffer can really hold. That may prevent loss | |
4102 | of characters on some systems when input is stuffed at us. */ | |
4103 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 4104 | int n_to_read; |
284f4730 | 4105 | |
58788063 | 4106 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
4107 | #ifdef WINDOWSNT |
4108 | return 0; | |
4109 | #else /* not WINDOWSNT */ | |
80e4aa30 | 4110 | #ifdef MSDOS |
58788063 RS |
4111 | n_to_read = dos_keysns (); |
4112 | if (n_to_read == 0) | |
4113 | return 0; | |
c3a2738c | 4114 | #else /* not MSDOS */ |
284f4730 JB |
4115 | #ifdef FIONREAD |
4116 | /* Find out how much input is available. */ | |
437f6112 | 4117 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
4118 | /* Formerly simply reported no input, but that sometimes led to |
4119 | a failure of Emacs to terminate. | |
4120 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
4121 | /* ??? Is it really right to send the signal just to this process |
4122 | rather than to the whole process group? | |
4123 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 4124 | kill (getpid (), SIGHUP); |
58788063 | 4125 | if (n_to_read == 0) |
284f4730 | 4126 | return 0; |
58788063 RS |
4127 | if (n_to_read > sizeof cbuf) |
4128 | n_to_read = sizeof cbuf; | |
284f4730 | 4129 | #else /* no FIONREAD */ |
482952ef | 4130 | #if defined(USG) || defined(DGUX) |
284f4730 | 4131 | /* Read some input if available, but don't wait. */ |
58788063 | 4132 | n_to_read = sizeof cbuf; |
437f6112 | 4133 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
4134 | #else |
4135 | you lose; | |
4136 | #endif | |
4137 | #endif | |
80e4aa30 | 4138 | #endif /* not MSDOS */ |
bc536d84 | 4139 | #endif /* not WINDOWSNT */ |
284f4730 | 4140 | |
58788063 RS |
4141 | /* Now read; for one reason or another, this will not block. |
4142 | NREAD is set to the number of chars read. */ | |
9134775b | 4143 | do |
284f4730 | 4144 | { |
80e4aa30 RS |
4145 | #ifdef MSDOS |
4146 | cbuf[0] = dos_keyread(); | |
4147 | nread = 1; | |
4148 | #else | |
437f6112 | 4149 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 4150 | #endif |
762f2b92 | 4151 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
4152 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
4153 | This looks incorrect, but it isn't, because _BSD causes | |
4154 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
4155 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 4156 | if (nread == 0) |
80e4aa30 | 4157 | kill (0, SIGHUP); |
284f4730 | 4158 | #endif |
9134775b | 4159 | } |
791587ee KH |
4160 | while ( |
4161 | /* We used to retry the read if it was interrupted. | |
4162 | But this does the wrong thing when O_NDELAY causes | |
4163 | an EAGAIN error. Does anybody know of a situation | |
4164 | where a retry is actually needed? */ | |
4165 | #if 0 | |
4166 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 4167 | #ifdef EFAULT |
9134775b | 4168 | || errno == EFAULT |
80e4aa30 | 4169 | #endif |
284f4730 | 4170 | #ifdef EBADSLT |
9134775b | 4171 | || errno == EBADSLT |
284f4730 | 4172 | #endif |
791587ee KH |
4173 | ) |
4174 | #else | |
4175 | 0 | |
4176 | #endif | |
4177 | ); | |
284f4730 JB |
4178 | |
4179 | #ifndef FIONREAD | |
02c2c53f | 4180 | #if defined (USG) || defined (DGUX) |
437f6112 | 4181 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 4182 | #endif /* USG or DGUX */ |
284f4730 JB |
4183 | #endif /* no FIONREAD */ |
4184 | for (i = 0; i < nread; i++) | |
4185 | { | |
4186 | buf[i].kind = ascii_keystroke; | |
86e5706b | 4187 | buf[i].modifiers = 0; |
b04904fb | 4188 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 4189 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
4190 | if (meta_key != 2) |
4191 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
4192 | |
4193 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 4194 | #ifdef MULTI_FRAME |
18cd2eeb | 4195 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
4196 | #else |
4197 | buf[i].frame_or_window = Qnil; | |
4198 | #endif | |
284f4730 JB |
4199 | } |
4200 | } | |
4201 | ||
4202 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
4203 | for (i = 0; i < nread; i++) | |
4204 | { | |
4205 | kbd_buffer_store_event (&buf[i]); | |
4206 | /* Don't look at input that follows a C-g too closely. | |
4207 | This reduces lossage due to autorepeat on C-g. */ | |
4208 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 4209 | && buf[i].code == quit_char) |
284f4730 JB |
4210 | break; |
4211 | } | |
4212 | ||
4213 | return nread; | |
4214 | } | |
4215 | #endif /* not VMS */ | |
4216 | \f | |
4217 | #ifdef SIGIO /* for entire page */ | |
4218 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4219 | ||
2ce30ea2 | 4220 | SIGTYPE |
284f4730 JB |
4221 | input_available_signal (signo) |
4222 | int signo; | |
4223 | { | |
4224 | /* Must preserve main program's value of errno. */ | |
4225 | int old_errno = errno; | |
4226 | #ifdef BSD4_1 | |
4227 | extern int select_alarmed; | |
4228 | #endif | |
4229 | ||
4230 | #ifdef USG | |
4231 | /* USG systems forget handlers when they are used; | |
4232 | must reestablish each time */ | |
4233 | signal (signo, input_available_signal); | |
4234 | #endif /* USG */ | |
4235 | ||
4236 | #ifdef BSD4_1 | |
4237 | sigisheld (SIGIO); | |
4238 | #endif | |
4239 | ||
ffd56f97 JB |
4240 | if (input_available_clear_time) |
4241 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4242 | |
4243 | while (1) | |
4244 | { | |
4245 | int nread; | |
4246 | nread = read_avail_input (1); | |
4247 | /* -1 means it's not ok to read the input now. | |
4248 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4249 | 0 means there was no keyboard input available. */ | |
4250 | if (nread <= 0) | |
4251 | break; | |
4252 | ||
4253 | #ifdef BSD4_1 | |
4254 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4255 | #endif | |
4256 | } | |
4257 | ||
4258 | #ifdef BSD4_1 | |
4259 | sigfree (); | |
4260 | #endif | |
4261 | errno = old_errno; | |
4262 | } | |
4263 | #endif /* SIGIO */ | |
ad163903 JB |
4264 | |
4265 | /* Send ourselves a SIGIO. | |
4266 | ||
4267 | This function exists so that the UNBLOCK_INPUT macro in | |
4268 | blockinput.h can have some way to take care of input we put off | |
4269 | dealing with, without assuming that every file which uses | |
4270 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4271 | void | |
4272 | reinvoke_input_signal () | |
4273 | { | |
df0f2ba1 | 4274 | #ifdef SIGIO |
ad163903 JB |
4275 | kill (0, SIGIO); |
4276 | #endif | |
4277 | } | |
4278 | ||
4279 | ||
284f4730 JB |
4280 | \f |
4281 | /* Return the prompt-string of a sparse keymap. | |
4282 | This is the first element which is a string. | |
4283 | Return nil if there is none. */ | |
4284 | ||
4285 | Lisp_Object | |
4286 | map_prompt (map) | |
4287 | Lisp_Object map; | |
4288 | { | |
4289 | while (CONSP (map)) | |
4290 | { | |
4291 | register Lisp_Object tem; | |
4292 | tem = Fcar (map); | |
8c18cbfb | 4293 | if (STRINGP (tem)) |
284f4730 JB |
4294 | return tem; |
4295 | map = Fcdr (map); | |
4296 | } | |
4297 | return Qnil; | |
4298 | } | |
4299 | ||
b7c49376 RS |
4300 | static void menu_bar_item (); |
4301 | static void menu_bar_one_keymap (); | |
4302 | ||
4303 | /* These variables hold the vector under construction within | |
4304 | menu_bar_items and its subroutines, and the current index | |
4305 | for storing into that vector. */ | |
4306 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4307 | static int menu_bar_items_index; |
5ec75a55 | 4308 | |
b7c49376 RS |
4309 | /* Return a vector of menu items for a menu bar, appropriate |
4310 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4311 | KEY STRING MAPLIST. |
b7c49376 RS |
4312 | |
4313 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4314 | |
4315 | Lisp_Object | |
b7c49376 RS |
4316 | menu_bar_items (old) |
4317 | Lisp_Object old; | |
5ec75a55 RS |
4318 | { |
4319 | /* The number of keymaps we're scanning right now, and the number of | |
4320 | keymaps we have allocated space for. */ | |
4321 | int nmaps; | |
4322 | ||
4323 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
4324 | in the current keymaps, or nil where it is not a prefix. */ | |
4325 | Lisp_Object *maps; | |
4326 | ||
9f9c0e27 | 4327 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
4328 | |
4329 | Lisp_Object result; | |
4330 | ||
4331 | int mapno; | |
47d319aa | 4332 | Lisp_Object oquit; |
5ec75a55 | 4333 | |
b7c49376 RS |
4334 | int i; |
4335 | ||
4336 | struct gcpro gcpro1; | |
4337 | ||
db60d856 JB |
4338 | /* In order to build the menus, we need to call the keymap |
4339 | accessors. They all call QUIT. But this function is called | |
4340 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
4341 | quitting while building the menus. |
4342 | We do this instead of specbind because (1) errors will clear it anyway | |
4343 | and (2) this avoids risk of specpdl overflow. */ | |
4344 | oquit = Vinhibit_quit; | |
df0f2ba1 | 4345 | Vinhibit_quit = Qt; |
db60d856 | 4346 | |
b7c49376 RS |
4347 | if (!NILP (old)) |
4348 | menu_bar_items_vector = old; | |
4349 | else | |
4350 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
4351 | menu_bar_items_index = 0; | |
4352 | ||
4353 | GCPRO1 (menu_bar_items_vector); | |
4354 | ||
5ec75a55 RS |
4355 | /* Build our list of keymaps. |
4356 | If we recognize a function key and replace its escape sequence in | |
4357 | keybuf with its symbol, or if the sequence starts with a mouse | |
4358 | click and we need to switch buffers, we jump back here to rebuild | |
4359 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 4360 | { |
5ec75a55 RS |
4361 | Lisp_Object *tmaps; |
4362 | ||
217258d5 | 4363 | /* Should overriding-terminal-local-map and overriding-local-map apply? */ |
d0a49716 | 4364 | if (!NILP (Voverriding_local_map_menu_flag)) |
9dd3131c | 4365 | { |
217258d5 KH |
4366 | /* Yes, use them (if non-nil) as well as the global map. */ |
4367 | maps = (Lisp_Object *) alloca (3 * sizeof (maps[0])); | |
4368 | nmaps = 0; | |
4369 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
4370 | maps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
4371 | if (!NILP (Voverriding_local_map)) | |
4372 | maps[nmaps++] = Voverriding_local_map; | |
9dd3131c RS |
4373 | } |
4374 | else | |
4375 | { | |
d0a49716 | 4376 | /* No, so use major and minor mode keymaps. */ |
217258d5 KH |
4377 | nmaps = current_minor_maps (NULL, &tmaps); |
4378 | maps = (Lisp_Object *) alloca ((nmaps + 2) * sizeof (maps[0])); | |
4379 | bcopy (tmaps, maps, nmaps * sizeof (maps[0])); | |
5ec75a55 | 4380 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 4381 | maps[nmaps++] = get_local_map (PT, current_buffer); |
5ec75a55 | 4382 | #else |
217258d5 | 4383 | maps[nmaps++] = current_buffer->keymap; |
5ec75a55 | 4384 | #endif |
9dd3131c | 4385 | } |
217258d5 | 4386 | maps[nmaps++] = current_global_map; |
5ec75a55 RS |
4387 | } |
4388 | ||
4389 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
4390 | ||
4391 | result = Qnil; | |
4392 | ||
e58aa385 | 4393 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
4394 | { |
4395 | if (! NILP (maps[mapno])) | |
e74fbc70 | 4396 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
4397 | else |
4398 | def = Qnil; | |
4399 | ||
4400 | tem = Fkeymapp (def); | |
4401 | if (!NILP (tem)) | |
b7c49376 | 4402 | menu_bar_one_keymap (def); |
5ec75a55 RS |
4403 | } |
4404 | ||
b7c49376 RS |
4405 | /* Move to the end those items that should be at the end. */ |
4406 | ||
9f9c0e27 RS |
4407 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
4408 | { | |
b7c49376 RS |
4409 | int i; |
4410 | int end = menu_bar_items_index; | |
4411 | ||
4412 | for (i = 0; i < end; i += 3) | |
4413 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4414 | { | |
0301268e RS |
4415 | Lisp_Object tem0, tem1, tem2; |
4416 | /* Move the item at index I to the end, | |
4417 | shifting all the others forward. */ | |
4418 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
4419 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
4420 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4421 | if (end > i + 3) | |
4422 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4423 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4424 | (end - i - 3) * sizeof (Lisp_Object)); | |
4425 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
4426 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
4427 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
4428 | break; | |
b7c49376 RS |
4429 | } |
4430 | } | |
9f9c0e27 | 4431 | |
b7c49376 RS |
4432 | /* Add nil, nil, nil at the end. */ |
4433 | i = menu_bar_items_index; | |
4434 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4435 | { | |
4436 | Lisp_Object tem; | |
4437 | int newsize = 2 * i; | |
4438 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4439 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4440 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4441 | menu_bar_items_vector = tem; | |
9f9c0e27 | 4442 | } |
b7c49376 RS |
4443 | /* Add this item. */ |
4444 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4445 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4446 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4447 | menu_bar_items_index = i; | |
a73c5e29 | 4448 | |
47d319aa | 4449 | Vinhibit_quit = oquit; |
b7c49376 RS |
4450 | UNGCPRO; |
4451 | return menu_bar_items_vector; | |
5ec75a55 RS |
4452 | } |
4453 | \f | |
4454 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 4455 | in menu_bar_items_vector. */ |
5ec75a55 | 4456 | |
b7c49376 RS |
4457 | static void |
4458 | menu_bar_one_keymap (keymap) | |
4459 | Lisp_Object keymap; | |
5ec75a55 RS |
4460 | { |
4461 | Lisp_Object tail, item, key, binding, item_string, table; | |
4462 | ||
4463 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 4464 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
4465 | { |
4466 | item = XCONS (tail)->car; | |
8c18cbfb | 4467 | if (CONSP (item)) |
5ec75a55 RS |
4468 | { |
4469 | key = XCONS (item)->car; | |
4470 | binding = XCONS (item)->cdr; | |
8c18cbfb | 4471 | if (CONSP (binding)) |
5ec75a55 RS |
4472 | { |
4473 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4474 | if (STRINGP (item_string)) |
b7c49376 | 4475 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4476 | } |
e58aa385 | 4477 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4478 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 4479 | } |
8c18cbfb | 4480 | else if (VECTORP (item)) |
5ec75a55 RS |
4481 | { |
4482 | /* Loop over the char values represented in the vector. */ | |
4483 | int len = XVECTOR (item)->size; | |
4484 | int c; | |
4485 | for (c = 0; c < len; c++) | |
4486 | { | |
4487 | Lisp_Object character; | |
bb9e9bed | 4488 | XSETFASTINT (character, c); |
5ec75a55 | 4489 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4490 | if (CONSP (binding)) |
5ec75a55 RS |
4491 | { |
4492 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4493 | if (STRINGP (item_string)) |
b7c49376 | 4494 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4495 | } |
e58aa385 | 4496 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4497 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4498 | } |
4499 | } | |
4500 | } | |
5ec75a55 RS |
4501 | } |
4502 | ||
047a8ea7 RS |
4503 | /* This is used as the handler when calling internal_condition_case_1. */ |
4504 | ||
4505 | static Lisp_Object | |
4506 | menu_bar_item_1 (arg) | |
4507 | Lisp_Object arg; | |
4508 | { | |
4509 | return Qnil; | |
4510 | } | |
4511 | ||
f5e09c8b RS |
4512 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4513 | If there's already an item for KEY, add this DEF to it. */ | |
4514 | ||
b7c49376 RS |
4515 | static void |
4516 | menu_bar_item (key, item_string, def) | |
4517 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4518 | { |
e58aa385 | 4519 | Lisp_Object tem; |
5ec75a55 | 4520 | Lisp_Object enabled; |
b7c49376 | 4521 | int i; |
5ec75a55 | 4522 | |
e58aa385 RS |
4523 | if (EQ (def, Qundefined)) |
4524 | { | |
f5e09c8b | 4525 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4526 | discard any previously made menu bar item. */ |
b7c49376 RS |
4527 | |
4528 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4529 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4530 | { | |
4531 | if (menu_bar_items_index > i + 3) | |
4532 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4533 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4534 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4535 | menu_bar_items_index -= 3; | |
4536 | return; | |
4537 | } | |
8aa034e1 RS |
4538 | |
4539 | /* If there's no definition for this key yet, | |
4540 | just ignore `undefined'. */ | |
4541 | return; | |
e58aa385 RS |
4542 | } |
4543 | ||
5ec75a55 RS |
4544 | /* See if this entry is enabled. */ |
4545 | enabled = Qt; | |
4546 | ||
8c18cbfb | 4547 | if (SYMBOLP (def)) |
5ec75a55 RS |
4548 | { |
4549 | /* No property, or nil, means enable. | |
4550 | Otherwise, enable if value is not nil. */ | |
4551 | tem = Fget (def, Qmenu_enable); | |
4552 | if (!NILP (tem)) | |
047a8ea7 RS |
4553 | /* (condition-case nil (eval tem) |
4554 | (error nil)) */ | |
4555 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4556 | menu_bar_item_1); | |
5ec75a55 RS |
4557 | } |
4558 | ||
b7c49376 RS |
4559 | /* Ignore this item if it's not enabled. */ |
4560 | if (NILP (enabled)) | |
4561 | return; | |
5ec75a55 | 4562 | |
f5e09c8b | 4563 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4564 | for (i = 0; i < menu_bar_items_index; i += 3) |
4565 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4566 | break; | |
4567 | ||
f5e09c8b | 4568 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4569 | if (i == menu_bar_items_index) |
4570 | { | |
4571 | /* If vector is too small, get a bigger one. */ | |
4572 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4573 | { | |
4574 | Lisp_Object tem; | |
4575 | int newsize = 2 * i; | |
4576 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4577 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4578 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4579 | menu_bar_items_vector = tem; | |
4580 | } | |
4581 | /* Add this item. */ | |
4582 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4583 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4584 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4585 | menu_bar_items_index = i; |
4586 | } | |
f5e09c8b RS |
4587 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4588 | else | |
4589 | { | |
4590 | Lisp_Object old; | |
4591 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4592 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4593 | } | |
5ec75a55 RS |
4594 | } |
4595 | \f | |
dcc408a0 RS |
4596 | /* Read a character using menus based on maps in the array MAPS. |
4597 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4598 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4599 | |
4600 | PREV_EVENT is the previous input event, or nil if we are reading | |
4601 | the first event of a key sequence. | |
4602 | ||
83d68044 | 4603 | If USED_MOUSE_MENU is non-null, then we set *USED_MOUSE_MENU to 1 |
6569cc8d | 4604 | if we used a mouse menu to read the input, or zero otherwise. If |
83d68044 | 4605 | USED_MOUSE_MENU is null, we don't dereference it. |
284f4730 JB |
4606 | |
4607 | The prompting is done based on the prompt-string of the map | |
df0f2ba1 | 4608 | and the strings associated with various map elements. |
8150596a RS |
4609 | |
4610 | This can be done with X menus or with menus put in the minibuf. | |
4611 | These are done in different ways, depending on how the input will be read. | |
4612 | Menus using X are done after auto-saving in read-char, getting the input | |
4613 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4614 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4615 | |
7617111f | 4616 | static Lisp_Object |
8150596a | 4617 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4618 | int nmaps; |
4619 | Lisp_Object *maps; | |
4620 | Lisp_Object prev_event; | |
4621 | int *used_mouse_menu; | |
284f4730 | 4622 | { |
7d6de002 RS |
4623 | int mapno; |
4624 | register Lisp_Object name; | |
7d6de002 RS |
4625 | Lisp_Object rest, vector; |
4626 | ||
6569cc8d JB |
4627 | if (used_mouse_menu) |
4628 | *used_mouse_menu = 0; | |
284f4730 JB |
4629 | |
4630 | /* Use local over global Menu maps */ | |
4631 | ||
7d6de002 RS |
4632 | if (! menu_prompting) |
4633 | return Qnil; | |
4634 | ||
03361bcc RS |
4635 | /* Optionally disregard all but the global map. */ |
4636 | if (inhibit_local_menu_bar_menus) | |
4637 | { | |
4638 | maps += (nmaps - 1); | |
4639 | nmaps = 1; | |
4640 | } | |
4641 | ||
7d6de002 RS |
4642 | /* Get the menu name from the first map that has one (a prompt string). */ |
4643 | for (mapno = 0; mapno < nmaps; mapno++) | |
4644 | { | |
4645 | name = map_prompt (maps[mapno]); | |
4646 | if (!NILP (name)) | |
4647 | break; | |
4648 | } | |
284f4730 | 4649 | |
7d6de002 | 4650 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4651 | if (mapno >= nmaps) |
7d6de002 RS |
4652 | return Qnil; |
4653 | ||
87485d6f | 4654 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4655 | /* If we got to this point via a mouse click, |
4656 | use a real menu for mouse selection. */ | |
5a8d99e0 KH |
4657 | if (EVENT_HAS_PARAMETERS (prev_event) |
4658 | && !EQ (XCONS (prev_event)->car, Qmenu_bar)) | |
7d6de002 RS |
4659 | { |
4660 | /* Display the menu and get the selection. */ | |
4661 | Lisp_Object *realmaps | |
4662 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4663 | Lisp_Object value; | |
4664 | int nmaps1 = 0; | |
4665 | ||
4666 | /* Use the maps that are not nil. */ | |
4667 | for (mapno = 0; mapno < nmaps; mapno++) | |
4668 | if (!NILP (maps[mapno])) | |
4669 | realmaps[nmaps1++] = maps[mapno]; | |
4670 | ||
4671 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4672 | if (CONSP (value)) |
4673 | { | |
4674 | /* If we got more than one event, put all but the first | |
4675 | onto this list to be read later. | |
4676 | Return just the first event now. */ | |
24597608 RS |
4677 | Vunread_command_events |
4678 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4679 | value = XCONS (value)->car; |
4680 | } | |
1c90c381 | 4681 | else if (NILP (value)) |
dcc408a0 | 4682 | value = Qt; |
6569cc8d JB |
4683 | if (used_mouse_menu) |
4684 | *used_mouse_menu = 1; | |
7d6de002 RS |
4685 | return value; |
4686 | } | |
87485d6f | 4687 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4688 | return Qnil ; |
4689 | } | |
4690 | ||
4691 | static Lisp_Object | |
24597608 | 4692 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4693 | int commandflag ; |
4694 | int nmaps; | |
4695 | Lisp_Object *maps; | |
4696 | { | |
4697 | int mapno; | |
4698 | register Lisp_Object name; | |
4699 | int nlength; | |
4700 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4701 | char *menu = (char *) alloca (width + 4); | |
4702 | int idx = -1; | |
9fdbfdf8 | 4703 | int nobindings = 1; |
8150596a RS |
4704 | Lisp_Object rest, vector; |
4705 | ||
4706 | if (! menu_prompting) | |
4707 | return Qnil; | |
4708 | ||
4709 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4710 | for (mapno = 0; mapno < nmaps; mapno++) | |
4711 | { | |
4712 | name = map_prompt (maps[mapno]); | |
4713 | if (!NILP (name)) | |
4714 | break; | |
4715 | } | |
4716 | ||
4717 | /* If we don't have any menus, just read a character normally. */ | |
4718 | if (mapno >= nmaps) | |
4719 | return Qnil; | |
284f4730 JB |
4720 | |
4721 | /* Prompt string always starts with map's prompt, and a space. */ | |
4722 | strcpy (menu, XSTRING (name)->data); | |
4723 | nlength = XSTRING (name)->size; | |
7d6de002 | 4724 | menu[nlength++] = ':'; |
284f4730 JB |
4725 | menu[nlength++] = ' '; |
4726 | menu[nlength] = 0; | |
4727 | ||
7d6de002 RS |
4728 | /* Start prompting at start of first map. */ |
4729 | mapno = 0; | |
4730 | rest = maps[mapno]; | |
284f4730 JB |
4731 | |
4732 | /* Present the documented bindings, a line at a time. */ | |
4733 | while (1) | |
4734 | { | |
4735 | int notfirst = 0; | |
4736 | int i = nlength; | |
4737 | Lisp_Object obj; | |
4738 | int ch; | |
8066f1a1 | 4739 | Lisp_Object orig_defn_macro; |
284f4730 | 4740 | |
284f4730 | 4741 | /* Loop over elements of map. */ |
7d6de002 | 4742 | while (i < width) |
284f4730 | 4743 | { |
7d6de002 | 4744 | Lisp_Object s, elt; |
284f4730 | 4745 | |
7d6de002 RS |
4746 | /* If reached end of map, start at beginning of next map. */ |
4747 | if (NILP (rest)) | |
4748 | { | |
4749 | mapno++; | |
4750 | /* At end of last map, wrap around to first map if just starting, | |
4751 | or end this line if already have something on it. */ | |
4752 | if (mapno == nmaps) | |
284f4730 | 4753 | { |
8150596a | 4754 | mapno = 0; |
40932d1a | 4755 | if (notfirst || nobindings) break; |
284f4730 | 4756 | } |
7d6de002 | 4757 | rest = maps[mapno]; |
284f4730 | 4758 | } |
7d6de002 RS |
4759 | |
4760 | /* Look at the next element of the map. */ | |
4761 | if (idx >= 0) | |
4762 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4763 | else |
7d6de002 RS |
4764 | elt = Fcar_safe (rest); |
4765 | ||
8c18cbfb | 4766 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4767 | { |
7d6de002 RS |
4768 | /* If we found a dense table in the keymap, |
4769 | advanced past it, but start scanning its contents. */ | |
4770 | rest = Fcdr_safe (rest); | |
4771 | vector = elt; | |
4772 | idx = 0; | |
284f4730 | 4773 | } |
7d6de002 RS |
4774 | else |
4775 | { | |
4776 | /* An ordinary element. */ | |
0a2ea221 KH |
4777 | Lisp_Object event; |
4778 | ||
4779 | if (idx < 0) | |
4780 | { | |
4781 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4782 | event = Fcar_safe (elt); | |
4783 | } | |
8150596a | 4784 | else |
7d6de002 | 4785 | { |
0a2ea221 KH |
4786 | s = Fcar_safe (elt); /* vector */ |
4787 | XSETINT (event, idx); | |
4788 | } | |
4789 | ||
4790 | /* Ignore the element if it has no prompt string. */ | |
4791 | if (STRINGP (s) && INTEGERP (event)) | |
4792 | { | |
4793 | /* 1 if the char to type matches the string. */ | |
4794 | int char_matches; | |
4795 | Lisp_Object upcased_event, downcased_event; | |
4796 | Lisp_Object desc; | |
4797 | ||
4798 | upcased_event = Fupcase (event); | |
4799 | downcased_event = Fdowncase (event); | |
4800 | char_matches = (XINT (upcased_event) == XSTRING (s)->data[0] | |
4801 | || XINT (downcased_event) == XSTRING (s)->data[0]); | |
4802 | if (! char_matches) | |
4803 | desc = Fsingle_key_description (event); | |
4804 | ||
4805 | /* If we have room for the prompt string, add it to this line. | |
4806 | If this is the first on the line, always add it. */ | |
4807 | if ((XSTRING (s)->size + i + 2 | |
4808 | + (char_matches ? 0 : XSTRING (desc)->size + 3)) | |
4809 | < width | |
4810 | || !notfirst) | |
4811 | { | |
4812 | int thiswidth; | |
4813 | ||
4814 | /* Punctuate between strings. */ | |
4815 | if (notfirst) | |
4816 | { | |
4817 | strcpy (menu + i, ", "); | |
4818 | i += 2; | |
4819 | } | |
4820 | notfirst = 1; | |
4821 | nobindings = 0 ; | |
284f4730 | 4822 | |
0a2ea221 KH |
4823 | /* If the char to type doesn't match the string's |
4824 | first char, explicitly show what char to type. */ | |
4825 | if (! char_matches) | |
4826 | { | |
4827 | /* Add as much of string as fits. */ | |
4828 | thiswidth = XSTRING (desc)->size; | |
4829 | if (thiswidth + i > width) | |
4830 | thiswidth = width - i; | |
4831 | bcopy (XSTRING (desc)->data, menu + i, thiswidth); | |
4832 | i += thiswidth; | |
4833 | strcpy (menu + i, " = "); | |
4834 | i += 3; | |
4835 | } | |
4836 | ||
4837 | /* Add as much of string as fits. */ | |
4838 | thiswidth = XSTRING (s)->size; | |
4839 | if (thiswidth + i > width) | |
4840 | thiswidth = width - i; | |
4841 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4842 | i += thiswidth; | |
4843 | menu[i] = 0; | |
4844 | } | |
4845 | else | |
7d6de002 | 4846 | { |
0a2ea221 KH |
4847 | /* If this element does not fit, end the line now, |
4848 | and save the element for the next line. */ | |
4849 | strcpy (menu + i, "..."); | |
4850 | break; | |
7d6de002 | 4851 | } |
7d6de002 RS |
4852 | } |
4853 | ||
4854 | /* Move past this element. */ | |
8150596a | 4855 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4856 | /* Handle reaching end of dense table. */ |
4857 | idx = -1; | |
4858 | if (idx >= 0) | |
4859 | idx++; | |
4860 | else | |
4861 | rest = Fcdr_safe (rest); | |
4862 | } | |
284f4730 JB |
4863 | } |
4864 | ||
4865 | /* Prompt with that and read response. */ | |
4866 | message1 (menu); | |
8150596a | 4867 | |
df0f2ba1 | 4868 | /* Make believe its not a keyboard macro in case the help char |
8150596a RS |
4869 | is pressed. Help characters are not recorded because menu prompting |
4870 | is not used on replay. | |
4871 | */ | |
c5fdd383 KH |
4872 | orig_defn_macro = current_kboard->defining_kbd_macro; |
4873 | current_kboard->defining_kbd_macro = Qnil; | |
3cb81011 KH |
4874 | do |
4875 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4876 | while (BUFFERP (obj)); |
c5fdd383 | 4877 | current_kboard->defining_kbd_macro = orig_defn_macro; |
284f4730 | 4878 | |
8c18cbfb | 4879 | if (!INTEGERP (obj)) |
284f4730 JB |
4880 | return obj; |
4881 | else | |
4882 | ch = XINT (obj); | |
4883 | ||
f4255cd1 | 4884 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4885 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4886 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 4887 | { |
c5fdd383 | 4888 | if (!NILP (current_kboard->defining_kbd_macro)) |
8066f1a1 | 4889 | store_kbd_macro_char (obj); |
8150596a RS |
4890 | return obj; |
4891 | } | |
4892 | /* Help char - go round again */ | |
284f4730 JB |
4893 | } |
4894 | } | |
284f4730 JB |
4895 | \f |
4896 | /* Reading key sequences. */ | |
4897 | ||
4898 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4899 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4900 | keymap, or nil otherwise. Return the index of the first keymap in | |
4901 | which KEY has any binding, or NMAPS if no map has a binding. | |
4902 | ||
4903 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4904 | followed by the corresponding non-meta character. Keymaps in | |
4905 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4906 | NEXT. | |
4907 | ||
88cb0656 JB |
4908 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4909 | unmodified. | |
4910 | ||
284f4730 JB |
4911 | NEXT may == CURRENT. */ |
4912 | ||
4913 | static int | |
4e50f26a | 4914 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4915 | Lisp_Object key; |
4916 | Lisp_Object *current, *defs, *next; | |
4917 | int nmaps; | |
4918 | { | |
4919 | int i, first_binding; | |
4920 | ||
4921 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4922 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4923 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4924 | { |
4925 | for (i = 0; i < nmaps; i++) | |
4926 | if (! NILP (current[i])) | |
4927 | { | |
cd21b839 | 4928 | next[i] = |
e74fbc70 | 4929 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4930 | |
4931 | /* Note that since we pass the resulting bindings through | |
4932 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4933 | disappear. */ | |
f4255cd1 | 4934 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4935 | } |
4936 | else | |
4937 | next[i] = Qnil; | |
4938 | ||
4939 | current = next; | |
18cd2eeb | 4940 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4941 | } |
4942 | ||
4943 | first_binding = nmaps; | |
4944 | for (i = nmaps - 1; i >= 0; i--) | |
4945 | { | |
4946 | if (! NILP (current[i])) | |
4947 | { | |
e74fbc70 | 4948 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4949 | if (! NILP (defs[i])) |
4950 | first_binding = i; | |
4951 | } | |
4952 | else | |
4953 | defs[i] = Qnil; | |
4954 | } | |
4955 | ||
284f4730 | 4956 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4957 | if (first_binding < nmaps) |
4958 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4959 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4960 | |
4961 | return first_binding; | |
4962 | } | |
4963 | ||
df0f2ba1 | 4964 | /* Read a sequence of keys that ends with a non prefix character, |
f4255cd1 JB |
4965 | storing it in KEYBUF, a buffer of size BUFSIZE. |
4966 | Prompt with PROMPT. | |
284f4730 | 4967 | Return the length of the key sequence stored. |
dcc408a0 | 4968 | Return -1 if the user rejected a command menu. |
284f4730 | 4969 | |
f4255cd1 JB |
4970 | Echo starting immediately unless `prompt' is 0. |
4971 | ||
4972 | Where a key sequence ends depends on the currently active keymaps. | |
4973 | These include any minor mode keymaps active in the current buffer, | |
4974 | the current buffer's local map, and the global map. | |
4975 | ||
4976 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4977 | to see if some trailing subsequence might be the beginning of a | |
4978 | function key's sequence. If so, we try to read the whole function | |
4979 | key, and substitute its symbolic name into the key sequence. | |
4980 | ||
fbcd35bd JB |
4981 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4982 | `double-' events into similar click events, if that would make them | |
4983 | bound. We try to turn `triple-' events first into `double-' events, | |
4984 | then into clicks. | |
f4255cd1 JB |
4985 | |
4986 | If we get a mouse click in a mode line, vertical divider, or other | |
4987 | non-text area, we treat the click as if it were prefixed by the | |
4988 | symbol denoting that area - `mode-line', `vertical-line', or | |
4989 | whatever. | |
4990 | ||
4991 | If the sequence starts with a mouse click, we read the key sequence | |
4992 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4993 | |
f4255cd1 JB |
4994 | If the user switches frames in the midst of a key sequence, we put |
4995 | off the switch-frame event until later; the next call to | |
4996 | read_char will return it. */ | |
48e416d4 | 4997 | |
284f4730 | 4998 | static int |
ce98e608 KH |
4999 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
5000 | can_return_switch_frame) | |
284f4730 JB |
5001 | Lisp_Object *keybuf; |
5002 | int bufsize; | |
84d91fda | 5003 | Lisp_Object prompt; |
309b0fc8 | 5004 | int dont_downcase_last; |
ce98e608 | 5005 | int can_return_switch_frame; |
284f4730 | 5006 | { |
f4255cd1 JB |
5007 | int count = specpdl_ptr - specpdl; |
5008 | ||
284f4730 JB |
5009 | /* How many keys there are in the current key sequence. */ |
5010 | int t; | |
5011 | ||
284f4730 JB |
5012 | /* The length of the echo buffer when we started reading, and |
5013 | the length of this_command_keys when we started reading. */ | |
5014 | int echo_start; | |
f4255cd1 | 5015 | int keys_start; |
284f4730 JB |
5016 | |
5017 | /* The number of keymaps we're scanning right now, and the number of | |
5018 | keymaps we have allocated space for. */ | |
5019 | int nmaps; | |
5020 | int nmaps_allocated = 0; | |
5021 | ||
284f4730 JB |
5022 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
5023 | the current keymaps. */ | |
5024 | Lisp_Object *defs; | |
5025 | ||
f4255cd1 JB |
5026 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
5027 | in the current keymaps, or nil where it is not a prefix. */ | |
5028 | Lisp_Object *submaps; | |
5029 | ||
e0dff5f6 RS |
5030 | /* The local map to start out with at start of key sequence. */ |
5031 | Lisp_Object orig_local_map; | |
5032 | ||
5033 | /* 1 if we have already considered switching to the local-map property | |
5034 | of the place where a mouse click occurred. */ | |
5035 | int localized_local_map = 0; | |
5036 | ||
f4255cd1 JB |
5037 | /* The index in defs[] of the first keymap that has a binding for |
5038 | this key sequence. In other words, the lowest i such that | |
5039 | defs[i] is non-nil. */ | |
284f4730 JB |
5040 | int first_binding; |
5041 | ||
f4255cd1 | 5042 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
5043 | input key. |
5044 | ||
5045 | We use this to recover after recognizing a function key. Once we | |
5046 | realize that a suffix of the current key sequence is actually a | |
5047 | function key's escape sequence, we replace the suffix with the | |
5048 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
5049 | contains a new and different key sequence, so the echo area, |
5050 | this_command_keys, and the submaps and defs arrays are wrong. In | |
5051 | this situation, we set mock_input to t, set t to 0, and jump to | |
5052 | restart_sequence; the loop will read keys from keybuf up until | |
5053 | mock_input, thus rebuilding the state; and then it will resume | |
5054 | reading characters from the keyboard. */ | |
284f4730 JB |
5055 | int mock_input = 0; |
5056 | ||
253598e4 | 5057 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
5058 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
5059 | and fkey_map is its binding. | |
253598e4 | 5060 | |
f4255cd1 JB |
5061 | These might be > t, indicating that all function key scanning |
5062 | should hold off until t reaches them. We do this when we've just | |
5063 | recognized a function key, to avoid searching for the function | |
5064 | key's again in Vfunction_key_map. */ | |
284f4730 | 5065 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 5066 | Lisp_Object fkey_map; |
284f4730 | 5067 | |
a612e298 RS |
5068 | /* Likewise, for key_translation_map. */ |
5069 | int keytran_start = 0, keytran_end = 0; | |
5070 | Lisp_Object keytran_map; | |
5071 | ||
cd21b839 JB |
5072 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
5073 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 5074 | Lisp_Object delayed_switch_frame; |
cd21b839 | 5075 | |
51763820 BF |
5076 | /* See the comment below... */ |
5077 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 5078 | Lisp_Object first_event; |
51763820 | 5079 | #endif |
4efda7dd | 5080 | |
309b0fc8 RS |
5081 | Lisp_Object original_uppercase; |
5082 | int original_uppercase_position = -1; | |
5083 | ||
bc536d84 | 5084 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 5085 | int dummyflag = 0; |
bc536d84 | 5086 | |
3b9189f8 RS |
5087 | struct buffer *starting_buffer; |
5088 | ||
e9bf89a0 RS |
5089 | /* Nonzero if we seem to have got the beginning of a binding |
5090 | in function_key_map. */ | |
5091 | int function_key_possible = 0; | |
00a78037 | 5092 | int key_translation_possible = 0; |
e9bf89a0 | 5093 | |
4efda7dd RS |
5094 | int junk; |
5095 | ||
5096 | last_nonmenu_event = Qnil; | |
5097 | ||
5098 | delayed_switch_frame = Qnil; | |
5099 | fkey_map = Vfunction_key_map; | |
a612e298 | 5100 | keytran_map = Vkey_translation_map; |
f4255cd1 | 5101 | |
a612e298 | 5102 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
5103 | if (NILP (Fkeymapp (Vfunction_key_map))) |
5104 | fkey_start = fkey_end = bufsize + 1; | |
5105 | ||
a612e298 RS |
5106 | /* If there is no key-translation-map, turn off scanning. */ |
5107 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
5108 | keytran_start = keytran_end = bufsize + 1; | |
5109 | ||
284f4730 JB |
5110 | if (INTERACTIVE) |
5111 | { | |
84d91fda RS |
5112 | if (!NILP (prompt)) |
5113 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 5114 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
5115 | /* This doesn't put in a dash if the echo buffer is empty, so |
5116 | you don't always see a dash hanging out in the minibuffer. */ | |
5117 | echo_dash (); | |
284f4730 JB |
5118 | } |
5119 | ||
f4255cd1 JB |
5120 | /* Record the initial state of the echo area and this_command_keys; |
5121 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 5122 | if (INTERACTIVE) |
df0f2ba1 | 5123 | echo_start = echo_length (); |
f4255cd1 | 5124 | keys_start = this_command_key_count; |
0a7f1fc0 | 5125 | |
51763820 BF |
5126 | #if defined (GOBBLE_FIRST_EVENT) |
5127 | /* This doesn't quite work, because some of the things that read_char | |
5128 | does cannot safely be bypassed. It seems too risky to try to make | |
df0f2ba1 | 5129 | this work right. */ |
51763820 | 5130 | |
4efda7dd RS |
5131 | /* Read the first char of the sequence specially, before setting |
5132 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 5133 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 5134 | &junk); |
51763820 | 5135 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 5136 | |
e0dff5f6 RS |
5137 | orig_local_map = get_local_map (PT, current_buffer); |
5138 | ||
7b4aedb9 JB |
5139 | /* We jump here when the key sequence has been thoroughly changed, and |
5140 | we need to rescan it starting from the beginning. When we jump here, | |
5141 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 5142 | replay_sequence: |
7b4aedb9 | 5143 | |
3b9189f8 | 5144 | starting_buffer = current_buffer; |
e9bf89a0 | 5145 | function_key_possible = 0; |
00a78037 | 5146 | key_translation_possible = 0; |
3b9189f8 | 5147 | |
f4255cd1 | 5148 | /* Build our list of keymaps. |
07d2b8de JB |
5149 | If we recognize a function key and replace its escape sequence in |
5150 | keybuf with its symbol, or if the sequence starts with a mouse | |
5151 | click and we need to switch buffers, we jump back here to rebuild | |
5152 | the initial keymaps from the current buffer. */ | |
df0f2ba1 | 5153 | { |
284f4730 JB |
5154 | Lisp_Object *maps; |
5155 | ||
217258d5 KH |
5156 | if (!NILP (current_kboard->Voverriding_terminal_local_map) |
5157 | || !NILP (Voverriding_local_map)) | |
284f4730 | 5158 | { |
217258d5 | 5159 | if (3 > nmaps_allocated) |
9dd3131c | 5160 | { |
217258d5 KH |
5161 | submaps = (Lisp_Object *) alloca (3 * sizeof (submaps[0])); |
5162 | defs = (Lisp_Object *) alloca (3 * sizeof (defs[0])); | |
5163 | nmaps_allocated = 3; | |
9dd3131c | 5164 | } |
217258d5 KH |
5165 | nmaps = 0; |
5166 | if (!NILP (current_kboard->Voverriding_terminal_local_map)) | |
5167 | submaps[nmaps++] = current_kboard->Voverriding_terminal_local_map; | |
5168 | if (!NILP (Voverriding_local_map)) | |
5169 | submaps[nmaps++] = Voverriding_local_map; | |
284f4730 | 5170 | } |
9dd3131c RS |
5171 | else |
5172 | { | |
217258d5 KH |
5173 | nmaps = current_minor_maps (0, &maps); |
5174 | if (nmaps + 2 > nmaps_allocated) | |
9dd3131c | 5175 | { |
217258d5 KH |
5176 | submaps = (Lisp_Object *) alloca ((nmaps+2) * sizeof (submaps[0])); |
5177 | defs = (Lisp_Object *) alloca ((nmaps+2) * sizeof (defs[0])); | |
5178 | nmaps_allocated = nmaps + 2; | |
9dd3131c | 5179 | } |
217258d5 | 5180 | bcopy (maps, submaps, nmaps * sizeof (submaps[0])); |
497ba7a1 | 5181 | #ifdef USE_TEXT_PROPERTIES |
217258d5 | 5182 | submaps[nmaps++] = orig_local_map; |
497ba7a1 | 5183 | #else |
217258d5 | 5184 | submaps[nmaps++] = current_buffer->keymap; |
497ba7a1 | 5185 | #endif |
9dd3131c | 5186 | } |
217258d5 | 5187 | submaps[nmaps++] = current_global_map; |
284f4730 JB |
5188 | } |
5189 | ||
5190 | /* Find an accurate initial value for first_binding. */ | |
5191 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 5192 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
5193 | break; |
5194 | ||
3b9189f8 | 5195 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
5196 | t = 0; |
5197 | ||
5198 | /* These are no-ops the first time through, but if we restart, they | |
5199 | revert the echo area and this_command_keys to their original state. */ | |
5200 | this_command_key_count = keys_start; | |
df0f2ba1 | 5201 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
5202 | echo_truncate (echo_start); |
5203 | ||
cca310da JB |
5204 | /* If the best binding for the current key sequence is a keymap, or |
5205 | we may be looking at a function key's escape sequence, keep on | |
5206 | reading. */ | |
253598e4 | 5207 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
5208 | || (first_binding >= nmaps |
5209 | && fkey_start < t | |
5210 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 5211 | && mock_input <= fkey_start) |
0d882d52 KH |
5212 | || (first_binding >= nmaps |
5213 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
5214 | /* Don't return in the middle of a possible function key sequence, |
5215 | if the only bindings we found were via case conversion. | |
5216 | Thus, if ESC O a has a function-key-map translation | |
5217 | and ESC o has a binding, don't return after ESC O, | |
5218 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 5219 | ) |
284f4730 JB |
5220 | { |
5221 | Lisp_Object key; | |
7d6de002 | 5222 | int used_mouse_menu = 0; |
284f4730 | 5223 | |
7b4aedb9 JB |
5224 | /* Where the last real key started. If we need to throw away a |
5225 | key that has expanded into more than one element of keybuf | |
5226 | (say, a mouse click on the mode line which is being treated | |
5227 | as [mode-line (mouse-...)], then we backtrack to this point | |
5228 | of keybuf. */ | |
5229 | int last_real_key_start; | |
5230 | ||
0a7f1fc0 JB |
5231 | /* These variables are analogous to echo_start and keys_start; |
5232 | while those allow us to restart the entire key sequence, | |
5233 | echo_local_start and keys_local_start allow us to throw away | |
5234 | just one key. */ | |
f4255cd1 JB |
5235 | int echo_local_start, keys_local_start, local_first_binding; |
5236 | ||
284f4730 JB |
5237 | if (t >= bufsize) |
5238 | error ("key sequence too long"); | |
5239 | ||
f4255cd1 JB |
5240 | if (INTERACTIVE) |
5241 | echo_local_start = echo_length (); | |
5242 | keys_local_start = this_command_key_count; | |
5243 | local_first_binding = first_binding; | |
df0f2ba1 | 5244 | |
f4255cd1 | 5245 | replay_key: |
0a7f1fc0 | 5246 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
5247 | jumped back up to replay_key; in that case, these restore the |
5248 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 5249 | loop. */ |
40932d1a | 5250 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 5251 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
5252 | this_command_key_count = keys_local_start; |
5253 | first_binding = local_first_binding; | |
5254 | ||
7e85b935 RS |
5255 | /* By default, assume each event is "real". */ |
5256 | last_real_key_start = t; | |
5257 | ||
f4255cd1 | 5258 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
5259 | if (t < mock_input) |
5260 | { | |
5261 | key = keybuf[t]; | |
5262 | add_command_key (key); | |
a98ea3f9 RS |
5263 | if (echo_keystrokes) |
5264 | echo_char (key); | |
284f4730 | 5265 | } |
253598e4 JB |
5266 | |
5267 | /* If not, we should actually read a character. */ | |
284f4730 JB |
5268 | else |
5269 | { | |
a6d53864 RS |
5270 | struct buffer *buf = current_buffer; |
5271 | ||
beecf6a1 | 5272 | { |
c5fdd383 KH |
5273 | #ifdef MULTI_KBOARD |
5274 | KBOARD *interrupted_kboard = current_kboard; | |
df0f2ba1 | 5275 | struct frame *interrupted_frame = selected_frame; |
c5fdd383 | 5276 | if (setjmp (wrong_kboard_jmpbuf)) |
beecf6a1 | 5277 | { |
5798cf15 KH |
5278 | if (!NILP (delayed_switch_frame)) |
5279 | { | |
c5fdd383 | 5280 | interrupted_kboard->kbd_queue |
5798cf15 | 5281 | = Fcons (delayed_switch_frame, |
c5fdd383 | 5282 | interrupted_kboard->kbd_queue); |
5798cf15 KH |
5283 | delayed_switch_frame = Qnil; |
5284 | } | |
beecf6a1 | 5285 | while (t > 0) |
c5fdd383 KH |
5286 | interrupted_kboard->kbd_queue |
5287 | = Fcons (keybuf[--t], interrupted_kboard->kbd_queue); | |
5798cf15 KH |
5288 | |
5289 | /* If the side queue is non-empty, ensure it begins with a | |
5290 | switch-frame, so we'll replay it in the right context. */ | |
c5fdd383 KH |
5291 | if (CONSP (interrupted_kboard->kbd_queue) |
5292 | && (key = XCONS (interrupted_kboard->kbd_queue)->car, | |
5798cf15 KH |
5293 | !(EVENT_HAS_PARAMETERS (key) |
5294 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (key)), | |
5295 | Qswitch_frame)))) | |
df0f2ba1 KH |
5296 | { |
5297 | Lisp_Object frame; | |
5298 | XSETFRAME (frame, interrupted_frame); | |
c5fdd383 | 5299 | interrupted_kboard->kbd_queue |
df0f2ba1 | 5300 | = Fcons (make_lispy_switch_frame (frame), |
c5fdd383 | 5301 | interrupted_kboard->kbd_queue); |
df0f2ba1 | 5302 | } |
beecf6a1 | 5303 | mock_input = 0; |
a6e0153c | 5304 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
5305 | goto replay_sequence; |
5306 | } | |
bded54dd | 5307 | #endif |
beecf6a1 KH |
5308 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
5309 | &used_mouse_menu); | |
5310 | } | |
284f4730 | 5311 | |
dcc408a0 RS |
5312 | /* read_char returns t when it shows a menu and the user rejects it. |
5313 | Just return -1. */ | |
5314 | if (EQ (key, Qt)) | |
5315 | return -1; | |
5316 | ||
f4255cd1 | 5317 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
5318 | Emacs 18 handles this by returning immediately with a |
5319 | zero, so that's what we'll do. */ | |
8c18cbfb | 5320 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 5321 | { |
f4255cd1 | 5322 | t = 0; |
bc536d84 RS |
5323 | /* The Microsoft C compiler can't handle the goto that |
5324 | would go here. */ | |
309b0fc8 | 5325 | dummyflag = 1; |
bc536d84 | 5326 | break; |
cd21b839 | 5327 | } |
df0f2ba1 | 5328 | |
3cb81011 KH |
5329 | /* If the current buffer has been changed from under us, the |
5330 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 5331 | if (BUFFERP (key)) |
3cb81011 KH |
5332 | { |
5333 | mock_input = t; | |
a6e0153c | 5334 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
5335 | goto replay_sequence; |
5336 | } | |
5337 | ||
3b9189f8 RS |
5338 | /* If we have a quit that was typed in another frame, and |
5339 | quit_throw_to_read_char switched buffers, | |
5340 | replay to get the right keymap. */ | |
9343ab07 | 5341 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
5342 | { |
5343 | keybuf[t++] = key; | |
5344 | mock_input = t; | |
5345 | Vquit_flag = Qnil; | |
a6e0153c | 5346 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
5347 | goto replay_sequence; |
5348 | } | |
3cb81011 | 5349 | |
284f4730 | 5350 | Vquit_flag = Qnil; |
7e85b935 | 5351 | } |
284f4730 | 5352 | |
df0f2ba1 | 5353 | /* Clicks in non-text areas get prefixed by the symbol |
7e85b935 RS |
5354 | in their CHAR-ADDRESS field. For example, a click on |
5355 | the mode line is prefixed by the symbol `mode-line'. | |
5356 | ||
5357 | Furthermore, key sequences beginning with mouse clicks | |
5358 | are read using the keymaps of the buffer clicked on, not | |
5359 | the current buffer. So we may have to switch the buffer | |
5360 | here. | |
5361 | ||
5362 | When we turn one event into two events, we must make sure | |
5363 | that neither of the two looks like the original--so that, | |
5364 | if we replay the events, they won't be expanded again. | |
5365 | If not for this, such reexpansion could happen either here | |
5366 | or when user programs play with this-command-keys. */ | |
5367 | if (EVENT_HAS_PARAMETERS (key)) | |
5368 | { | |
9b8eb840 | 5369 | Lisp_Object kind; |
cca310da | 5370 | |
9b8eb840 | 5371 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 5372 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 5373 | { |
9b8eb840 | 5374 | Lisp_Object window, posn; |
f4255cd1 | 5375 | |
9b8eb840 KH |
5376 | window = POSN_WINDOW (EVENT_START (key)); |
5377 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 5378 | if (CONSP (posn)) |
0a7f1fc0 | 5379 | { |
7e85b935 RS |
5380 | /* We're looking at the second event of a |
5381 | sequence which we expanded before. Set | |
5382 | last_real_key_start appropriately. */ | |
5383 | if (t > 0) | |
5384 | last_real_key_start = t - 1; | |
cd21b839 | 5385 | } |
7e85b935 RS |
5386 | |
5387 | /* Key sequences beginning with mouse clicks are | |
5388 | read using the keymaps in the buffer clicked on, | |
5389 | not the current buffer. If we're at the | |
5390 | beginning of a key sequence, switch buffers. */ | |
5391 | if (last_real_key_start == 0 | |
8c18cbfb KH |
5392 | && WINDOWP (window) |
5393 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 5394 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 5395 | { |
7e85b935 RS |
5396 | keybuf[t] = key; |
5397 | mock_input = t + 1; | |
5398 | ||
5399 | /* Arrange to go back to the original buffer once we're | |
5400 | done reading the key sequence. Note that we can't | |
5401 | use save_excursion_{save,restore} here, because they | |
5402 | save point as well as the current buffer; we don't | |
5403 | want to save point, because redisplay may change it, | |
5404 | to accommodate a Fset_window_start or something. We | |
5405 | don't want to do this at the top of the function, | |
5406 | because we may get input from a subprocess which | |
5407 | wants to change the selected window and stuff (say, | |
5408 | emacsclient). */ | |
5409 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
5410 | ||
5411 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 5412 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 5413 | goto replay_sequence; |
0a7f1fc0 | 5414 | } |
e0dff5f6 RS |
5415 | /* For a mouse click, get the local text-property keymap |
5416 | of the place clicked on, rather than point. */ | |
5417 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
5418 | && ! localized_local_map) | |
5ec75a55 | 5419 | { |
e0dff5f6 RS |
5420 | Lisp_Object map_here, start, pos; |
5421 | ||
5422 | localized_local_map = 1; | |
5423 | start = EVENT_START (key); | |
5424 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
5425 | { | |
5426 | pos = POSN_BUFFER_POSN (start); | |
5427 | if (INTEGERP (pos)) | |
5428 | { | |
5429 | map_here = get_local_map (XINT (pos), current_buffer); | |
5430 | if (!EQ (map_here, orig_local_map)) | |
5431 | { | |
5432 | orig_local_map = map_here; | |
5433 | keybuf[t] = key; | |
5434 | mock_input = t + 1; | |
5ec75a55 | 5435 | |
e0dff5f6 RS |
5436 | goto replay_sequence; |
5437 | } | |
5438 | } | |
5439 | } | |
5440 | } | |
5441 | ||
5442 | /* Expand mode-line and scroll-bar events into two events: | |
5443 | use posn as a fake prefix key. */ | |
5444 | if (SYMBOLP (posn)) | |
5445 | { | |
7e85b935 RS |
5446 | if (t + 1 >= bufsize) |
5447 | error ("key sequence too long"); | |
5448 | keybuf[t] = posn; | |
5449 | keybuf[t+1] = key; | |
5450 | mock_input = t + 2; | |
5451 | ||
5452 | /* Zap the position in key, so we know that we've | |
5453 | expanded it, and don't try to do so again. */ | |
5454 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5455 | = Fcons (posn, Qnil); | |
5456 | goto replay_key; | |
5ec75a55 | 5457 | } |
0a7f1fc0 | 5458 | } |
7e85b935 | 5459 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 5460 | { |
ce98e608 KH |
5461 | /* If we're at the beginning of a key sequence, and the caller |
5462 | says it's okay, go ahead and return this event. If we're | |
5463 | in the midst of a key sequence, delay it until the end. */ | |
5464 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
5465 | { |
5466 | delayed_switch_frame = key; | |
5467 | goto replay_key; | |
5468 | } | |
5469 | } | |
7a80a6f6 RS |
5470 | else if (CONSP (XCONS (key)->cdr) |
5471 | && CONSP (EVENT_START (key)) | |
5472 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 5473 | { |
9b8eb840 | 5474 | Lisp_Object posn; |
7e85b935 | 5475 | |
9b8eb840 | 5476 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
5477 | /* Handle menu-bar events: |
5478 | insert the dummy prefix event `menu-bar'. */ | |
5479 | if (EQ (posn, Qmenu_bar)) | |
5480 | { | |
5481 | if (t + 1 >= bufsize) | |
5482 | error ("key sequence too long"); | |
7e85b935 RS |
5483 | keybuf[t] = posn; |
5484 | keybuf[t+1] = key; | |
5485 | ||
5486 | /* Zap the position in key, so we know that we've | |
5487 | expanded it, and don't try to do so again. */ | |
5488 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5489 | = Fcons (posn, Qnil); | |
5490 | ||
5491 | mock_input = t + 2; | |
5492 | goto replay_sequence; | |
5493 | } | |
8c18cbfb | 5494 | else if (CONSP (posn)) |
7e85b935 RS |
5495 | { |
5496 | /* We're looking at the second event of a | |
5497 | sequence which we expanded before. Set | |
5498 | last_real_key_start appropriately. */ | |
5499 | if (last_real_key_start == t && t > 0) | |
5500 | last_real_key_start = t - 1; | |
5501 | } | |
a6d53864 | 5502 | } |
284f4730 | 5503 | } |
f4255cd1 JB |
5504 | |
5505 | /* We have finally decided that KEY is something we might want | |
5506 | to look up. */ | |
284f4730 JB |
5507 | first_binding = (follow_key (key, |
5508 | nmaps - first_binding, | |
253598e4 | 5509 | submaps + first_binding, |
284f4730 | 5510 | defs + first_binding, |
4e50f26a | 5511 | submaps + first_binding) |
284f4730 | 5512 | + first_binding); |
0a7f1fc0 | 5513 | |
f4255cd1 | 5514 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
5515 | if (first_binding >= nmaps) |
5516 | { | |
9b8eb840 | 5517 | Lisp_Object head; |
0a7f1fc0 | 5518 | |
9b8eb840 | 5519 | head = EVENT_HEAD (key); |
ecb7cb34 | 5520 | if (help_char_p (head)) |
7e85b935 RS |
5521 | { |
5522 | read_key_sequence_cmd = Vprefix_help_command; | |
5523 | keybuf[t++] = key; | |
5524 | last_nonmenu_event = key; | |
bc536d84 RS |
5525 | /* The Microsoft C compiler can't handle the goto that |
5526 | would go here. */ | |
309b0fc8 | 5527 | dummyflag = 1; |
0d882d52 | 5528 | break; |
7e85b935 RS |
5529 | } |
5530 | ||
8c18cbfb | 5531 | if (SYMBOLP (head)) |
0a7f1fc0 | 5532 | { |
9b8eb840 KH |
5533 | Lisp_Object breakdown; |
5534 | int modifiers; | |
0a7f1fc0 | 5535 | |
9b8eb840 KH |
5536 | breakdown = parse_modifiers (head); |
5537 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
5538 | /* Attempt to reduce an unbound mouse event to a simpler |
5539 | event that is bound: | |
5540 | Drags reduce to clicks. | |
5541 | Double-clicks reduce to clicks. | |
5542 | Triple-clicks reduce to double-clicks, then to clicks. | |
5543 | Down-clicks are eliminated. | |
5544 | Double-downs reduce to downs, then are eliminated. | |
5545 | Triple-downs reduce to double-downs, then to downs, | |
5546 | then are eliminated. */ | |
5547 | if (modifiers & (down_modifier | drag_modifier | |
5548 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 5549 | { |
559f9d04 RS |
5550 | while (modifiers & (down_modifier | drag_modifier |
5551 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
5552 | { |
5553 | Lisp_Object new_head, new_click; | |
5554 | if (modifiers & triple_modifier) | |
5555 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
5556 | else if (modifiers & double_modifier) |
5557 | modifiers &= ~double_modifier; | |
5558 | else if (modifiers & drag_modifier) | |
5559 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
5560 | else |
5561 | { | |
5562 | /* Dispose of this `down' event by simply jumping | |
5563 | back to replay_key, to get another event. | |
5564 | ||
5565 | Note that if this event came from mock input, | |
5566 | then just jumping back to replay_key will just | |
5567 | hand it to us again. So we have to wipe out any | |
5568 | mock input. | |
5569 | ||
5570 | We could delete keybuf[t] and shift everything | |
5571 | after that to the left by one spot, but we'd also | |
5572 | have to fix up any variable that points into | |
5573 | keybuf, and shifting isn't really necessary | |
5574 | anyway. | |
5575 | ||
5576 | Adding prefixes for non-textual mouse clicks | |
5577 | creates two characters of mock input, and both | |
5578 | must be thrown away. If we're only looking at | |
5579 | the prefix now, we can just jump back to | |
5580 | replay_key. On the other hand, if we've already | |
5581 | processed the prefix, and now the actual click | |
5582 | itself is giving us trouble, then we've lost the | |
5583 | state of the keymaps we want to backtrack to, and | |
5584 | we need to replay the whole sequence to rebuild | |
5585 | it. | |
5586 | ||
5587 | Beyond that, only function key expansion could | |
5588 | create more than two keys, but that should never | |
5589 | generate mouse events, so it's okay to zero | |
5590 | mock_input in that case too. | |
5591 | ||
5592 | Isn't this just the most wonderful code ever? */ | |
5593 | if (t == last_real_key_start) | |
5594 | { | |
5595 | mock_input = 0; | |
5596 | goto replay_key; | |
5597 | } | |
5598 | else | |
5599 | { | |
5600 | mock_input = last_real_key_start; | |
5601 | goto replay_sequence; | |
5602 | } | |
5603 | } | |
5604 | ||
27203ead RS |
5605 | new_head |
5606 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
5607 | new_click | |
5608 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5609 | |
5610 | /* Look for a binding for this new key. follow_key | |
5611 | promises that it didn't munge submaps the | |
5612 | last time we called it, since key was unbound. */ | |
27203ead RS |
5613 | first_binding |
5614 | = (follow_key (new_click, | |
5615 | nmaps - local_first_binding, | |
5616 | submaps + local_first_binding, | |
5617 | defs + local_first_binding, | |
4e50f26a | 5618 | submaps + local_first_binding) |
27203ead | 5619 | + local_first_binding); |
fbcd35bd JB |
5620 | |
5621 | /* If that click is bound, go for it. */ | |
5622 | if (first_binding < nmaps) | |
5623 | { | |
5624 | key = new_click; | |
5625 | break; | |
5626 | } | |
5627 | /* Otherwise, we'll leave key set to the drag event. */ | |
5628 | } | |
0a7f1fc0 JB |
5629 | } |
5630 | } | |
5631 | } | |
5632 | ||
284f4730 | 5633 | keybuf[t++] = key; |
7d6de002 RS |
5634 | /* Normally, last_nonmenu_event gets the previous key we read. |
5635 | But when a mouse popup menu is being used, | |
5636 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5637 | event that preceded the first level of menu. */ | |
5638 | if (!used_mouse_menu) | |
5639 | last_nonmenu_event = key; | |
284f4730 JB |
5640 | |
5641 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5642 | off the end of it. We only want to scan real keyboard input |
5643 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5644 | re-reading old events, don't examine it. */ |
4e50f26a | 5645 | if (first_binding >= nmaps |
253598e4 | 5646 | && t >= mock_input) |
284f4730 JB |
5647 | { |
5648 | Lisp_Object fkey_next; | |
5649 | ||
e9bf89a0 RS |
5650 | /* Continue scan from fkey_end until we find a bound suffix. |
5651 | If we fail, increment fkey_start | |
5652 | and start fkey_end from there. */ | |
284f4730 JB |
5653 | while (fkey_end < t) |
5654 | { | |
f4255cd1 JB |
5655 | Lisp_Object key; |
5656 | ||
5657 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5658 | /* Look up meta-characters by prefixing them |
5659 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5660 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5661 | { |
e74fbc70 RS |
5662 | fkey_next |
5663 | = get_keymap_1 | |
f4255cd1 | 5664 | (get_keyelt |
e74fbc70 | 5665 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5666 | 0, 1); |
bb9e9bed | 5667 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5668 | } |
067ffa38 JB |
5669 | else |
5670 | fkey_next = fkey_map; | |
5671 | ||
e74fbc70 RS |
5672 | fkey_next |
5673 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5674 | |
7a80a6f6 RS |
5675 | #if 0 /* I didn't turn this on, because it might cause trouble |
5676 | for the mapping of return into C-m and tab into C-i. */ | |
5677 | /* Optionally don't map function keys into other things. | |
5678 | This enables the user to redefine kp- keys easily. */ | |
5679 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5680 | fkey_next = Qnil; | |
5681 | #endif | |
5682 | ||
1abe6abe RS |
5683 | /* If the function key map gives a function, not an |
5684 | array, then call the function with no args and use | |
5685 | its value instead. */ | |
5686 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5687 | && fkey_end == t) | |
5688 | { | |
5689 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5690 | Lisp_Object tem; | |
5691 | tem = fkey_next; | |
5692 | ||
5693 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5694 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5695 | UNGCPRO; |
5696 | /* If the function returned something invalid, | |
5697 | barf--don't ignore it. | |
df0f2ba1 | 5698 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
5699 | other variables.) */ |
5700 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5701 | error ("Function in function-key-map returns invalid key sequence"); | |
5702 | } | |
5703 | ||
e9bf89a0 RS |
5704 | function_key_possible = ! NILP (fkey_next); |
5705 | ||
85bc5181 | 5706 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5707 | function key map and it's a suffix of the current |
85bc5181 | 5708 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5709 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5710 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5711 | && fkey_end == t) |
5712 | { | |
2e864a76 | 5713 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5714 | |
5715 | t = fkey_start + len; | |
284f4730 JB |
5716 | if (t >= bufsize) |
5717 | error ("key sequence too long"); | |
5718 | ||
f5ea6163 JB |
5719 | if (VECTORP (fkey_next)) |
5720 | bcopy (XVECTOR (fkey_next)->contents, | |
5721 | keybuf + fkey_start, | |
5722 | (t - fkey_start) * sizeof (keybuf[0])); | |
5723 | else if (STRINGP (fkey_next)) | |
5724 | { | |
5725 | int i; | |
5726 | ||
5727 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5728 | XSETFASTINT (keybuf[fkey_start + i], |
5729 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5730 | } |
df0f2ba1 | 5731 | |
284f4730 JB |
5732 | mock_input = t; |
5733 | fkey_start = fkey_end = t; | |
32e6d806 | 5734 | fkey_map = Vfunction_key_map; |
284f4730 | 5735 | |
00a78037 RS |
5736 | /* Do pass the results through key-translation-map. */ |
5737 | keytran_start = keytran_end = 0; | |
5738 | keytran_map = Vkey_translation_map; | |
5739 | ||
f4255cd1 | 5740 | goto replay_sequence; |
284f4730 | 5741 | } |
df0f2ba1 | 5742 | |
f4255cd1 | 5743 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5744 | |
df0f2ba1 | 5745 | /* If we no longer have a bound suffix, try a new positions for |
a764a753 | 5746 | fkey_start. */ |
284f4730 JB |
5747 | if (NILP (fkey_map)) |
5748 | { | |
5749 | fkey_end = ++fkey_start; | |
5750 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5751 | function_key_possible = 0; |
284f4730 JB |
5752 | } |
5753 | } | |
5754 | } | |
a612e298 RS |
5755 | |
5756 | /* Look for this sequence in key-translation-map. */ | |
5757 | { | |
5758 | Lisp_Object keytran_next; | |
5759 | ||
5760 | /* Scan from keytran_end until we find a bound suffix. */ | |
5761 | while (keytran_end < t) | |
5762 | { | |
5763 | Lisp_Object key; | |
5764 | ||
5765 | key = keybuf[keytran_end++]; | |
5766 | /* Look up meta-characters by prefixing them | |
5767 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5768 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5769 | { |
5770 | keytran_next | |
5771 | = get_keymap_1 | |
5772 | (get_keyelt | |
5773 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5774 | 0, 1); | |
bb9e9bed | 5775 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5776 | } |
5777 | else | |
5778 | keytran_next = keytran_map; | |
5779 | ||
5780 | keytran_next | |
5781 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5782 | ||
1abe6abe RS |
5783 | /* If the key translation map gives a function, not an |
5784 | array, then call the function with no args and use | |
5785 | its value instead. */ | |
5786 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5787 | && keytran_end == t) | |
5788 | { | |
5789 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5790 | Lisp_Object tem; | |
5791 | tem = keytran_next; | |
5792 | ||
40932d1a | 5793 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5794 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5795 | UNGCPRO; |
5796 | /* If the function returned something invalid, | |
5797 | barf--don't ignore it. | |
df0f2ba1 | 5798 | (To ignore it safely, we would need to gcpro a bunch of |
1abe6abe RS |
5799 | other variables.) */ |
5800 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5801 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5802 | } |
5803 | ||
00a78037 RS |
5804 | key_translation_possible = ! NILP (keytran_next); |
5805 | ||
a612e298 | 5806 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5807 | key translation map and it's a suffix of the current |
a612e298 RS |
5808 | sequence (i.e. keytran_end == t), replace it with |
5809 | the binding and restart with keytran_start at the end. */ | |
5810 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5811 | && keytran_end == t) | |
5812 | { | |
2e864a76 | 5813 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5814 | |
5815 | t = keytran_start + len; | |
5816 | if (t >= bufsize) | |
5817 | error ("key sequence too long"); | |
5818 | ||
5819 | if (VECTORP (keytran_next)) | |
5820 | bcopy (XVECTOR (keytran_next)->contents, | |
5821 | keybuf + keytran_start, | |
5822 | (t - keytran_start) * sizeof (keybuf[0])); | |
5823 | else if (STRINGP (keytran_next)) | |
5824 | { | |
5825 | int i; | |
5826 | ||
5827 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5828 | XSETFASTINT (keybuf[keytran_start + i], |
5829 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5830 | } |
5831 | ||
5832 | mock_input = t; | |
5833 | keytran_start = keytran_end = t; | |
5834 | keytran_map = Vkey_translation_map; | |
5835 | ||
00a78037 RS |
5836 | /* Don't pass the results of key-translation-map |
5837 | through function-key-map. */ | |
5838 | fkey_start = fkey_end = t; | |
5839 | fkey_map = Vkey_translation_map; | |
5840 | ||
a612e298 RS |
5841 | goto replay_sequence; |
5842 | } | |
5843 | ||
5844 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5845 | ||
df0f2ba1 | 5846 | /* If we no longer have a bound suffix, try a new positions for |
a612e298 RS |
5847 | keytran_start. */ |
5848 | if (NILP (keytran_map)) | |
5849 | { | |
5850 | keytran_end = ++keytran_start; | |
5851 | keytran_map = Vkey_translation_map; | |
00a78037 | 5852 | key_translation_possible = 0; |
a612e298 RS |
5853 | } |
5854 | } | |
5855 | } | |
4e50f26a RS |
5856 | |
5857 | /* If KEY is not defined in any of the keymaps, | |
5858 | and cannot be part of a function key or translation, | |
5859 | and is an upper case letter | |
5860 | use the corresponding lower-case letter instead. */ | |
5861 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5862 | && ! key_translation_possible |
8c18cbfb | 5863 | && INTEGERP (key) |
4e50f26a RS |
5864 | && ((((XINT (key) & 0x3ffff) |
5865 | < XSTRING (current_buffer->downcase_table)->size) | |
5866 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5867 | || (XINT (key) & shift_modifier))) | |
5868 | { | |
309b0fc8 RS |
5869 | original_uppercase = key; |
5870 | original_uppercase_position = t - 1; | |
5871 | ||
4e50f26a RS |
5872 | if (XINT (key) & shift_modifier) |
5873 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5874 | else | |
5875 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5876 | | (XINT (key) & ~0x3ffff))); | |
5877 | ||
5878 | keybuf[t - 1] = key; | |
5879 | mock_input = t; | |
5880 | goto replay_sequence; | |
5881 | } | |
ef8fd672 RS |
5882 | /* If KEY is not defined in any of the keymaps, |
5883 | and cannot be part of a function key or translation, | |
5884 | and is a shifted function key, | |
5885 | use the corresponding unshifted function key instead. */ | |
5886 | if (first_binding == nmaps && ! function_key_possible | |
5887 | && ! key_translation_possible | |
5888 | && SYMBOLP (key)) | |
5889 | { | |
5890 | Lisp_Object breakdown; | |
5891 | int modifiers; | |
5892 | ||
309b0fc8 RS |
5893 | original_uppercase = key; |
5894 | original_uppercase_position = t - 1; | |
5895 | ||
ef8fd672 RS |
5896 | breakdown = parse_modifiers (key); |
5897 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
5898 | if (modifiers & shift_modifier) | |
5899 | { | |
5900 | modifiers &= ~shift_modifier; | |
ec0faad2 | 5901 | key = apply_modifiers (modifiers, |
ef8fd672 RS |
5902 | XCONS (breakdown)->car); |
5903 | ||
5904 | keybuf[t - 1] = key; | |
5905 | mock_input = t; | |
5906 | goto replay_sequence; | |
5907 | } | |
5908 | } | |
284f4730 JB |
5909 | } |
5910 | ||
309b0fc8 | 5911 | if (!dummyflag) |
bc536d84 RS |
5912 | read_key_sequence_cmd = (first_binding < nmaps |
5913 | ? defs[first_binding] | |
5914 | : Qnil); | |
284f4730 | 5915 | |
cd21b839 | 5916 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5917 | unbind_to (count, Qnil); |
07f76a14 | 5918 | |
309b0fc8 RS |
5919 | if (dont_downcase_last && t - 1 == original_uppercase_position) |
5920 | keybuf[t - 1] = original_uppercase; | |
5921 | ||
07f76a14 JB |
5922 | /* Occasionally we fabricate events, perhaps by expanding something |
5923 | according to function-key-map, or by adding a prefix symbol to a | |
5924 | mouse click in the scroll bar or modeline. In this cases, return | |
5925 | the entire generated key sequence, even if we hit an unbound | |
5926 | prefix or a definition before the end. This means that you will | |
5927 | be able to push back the event properly, and also means that | |
5928 | read-key-sequence will always return a logical unit. | |
5929 | ||
5930 | Better ideas? */ | |
cca310da JB |
5931 | for (; t < mock_input; t++) |
5932 | { | |
a98ea3f9 RS |
5933 | if (echo_keystrokes) |
5934 | echo_char (keybuf[t]); | |
cca310da JB |
5935 | add_command_key (keybuf[t]); |
5936 | } | |
07f76a14 | 5937 | |
284f4730 JB |
5938 | return t; |
5939 | } | |
5940 | ||
a612e298 RS |
5941 | #if 0 /* This doc string is too long for some compilers. |
5942 | This commented-out definition serves for DOC. */ | |
ce98e608 | 5943 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
5944 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5945 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5946 | current local and global maps.\n\ | |
5947 | \n\ | |
c0a58692 RS |
5948 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5949 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5950 | as a continuation of the previous key.\n\ | |
284f4730 | 5951 | \n\ |
309b0fc8 RS |
5952 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
5953 | convert the last event to lower case. (Normally any upper case event\n\ | |
5954 | is converted to lower case if the original event is undefined and the lower\n\ | |
5955 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
5956 | a key sequence to be defined.\n\ | |
5957 | \n\ | |
cb5df6ae JB |
5958 | A C-g typed while in this function is treated like any other character,\n\ |
5959 | and `quit-flag' is not set.\n\ | |
5960 | \n\ | |
5961 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5962 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5963 | of the selected window as normal.\n\ | |
ede41463 | 5964 | ""\n\ |
cb5df6ae JB |
5965 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5966 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5967 | or multi-click event is unbound, but the corresponding click event would\n\ |
5968 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5969 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5970 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5971 | \n\ |
5972 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5973 | lines separating windows, and scroll bars with imaginary keys\n\ |
5974 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 5975 | \n\ |
ce98e608 KH |
5976 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
5977 | function will process a switch-frame event if the user switches frames\n\ | |
5978 | before typing anything. If the user switches frames in the middle of a\n\ | |
5979 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
5980 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
5981 | \n\ |
5982 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5983 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5984 | `function-key-map' for more details.") |
11e08aab | 5985 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
a612e298 RS |
5986 | #endif |
5987 | ||
ce98e608 | 5988 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 5989 | 0) |
ce98e608 | 5990 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 5991 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 5992 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
5993 | { |
5994 | Lisp_Object keybuf[30]; | |
5995 | register int i; | |
5996 | struct gcpro gcpro1, gcpro2; | |
5997 | ||
5998 | if (!NILP (prompt)) | |
5999 | CHECK_STRING (prompt, 0); | |
6000 | QUIT; | |
6001 | ||
6002 | bzero (keybuf, sizeof keybuf); | |
6003 | GCPRO1 (keybuf[0]); | |
6004 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
6005 | ||
daa37602 | 6006 | if (NILP (continue_echo)) |
c0a58692 RS |
6007 | this_command_key_count = 0; |
6008 | ||
309b0fc8 | 6009 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
6010 | prompt, ! NILP (dont_downcase_last), |
6011 | ! NILP (can_return_switch_frame)); | |
284f4730 | 6012 | |
dcc408a0 RS |
6013 | if (i == -1) |
6014 | { | |
6015 | Vquit_flag = Qt; | |
6016 | QUIT; | |
6017 | } | |
284f4730 | 6018 | UNGCPRO; |
86e5706b | 6019 | return make_event_array (i, keybuf); |
284f4730 JB |
6020 | } |
6021 | \f | |
6022 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
6023 | "Execute CMD as an editor command.\n\ | |
6024 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
6025 | Optional second arg RECORD-FLAG non-nil\n\ | |
6026 | means unconditionally put this command in `command-history'.\n\ | |
6027 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
6028 | (cmd, record) | |
6029 | Lisp_Object cmd, record; | |
6030 | { | |
6031 | register Lisp_Object final; | |
6032 | register Lisp_Object tem; | |
6033 | Lisp_Object prefixarg; | |
6034 | struct backtrace backtrace; | |
6035 | extern int debug_on_next_call; | |
6036 | ||
d8bcf58e KH |
6037 | prefixarg = current_kboard->Vprefix_arg; |
6038 | current_kboard->Vprefix_arg = Qnil; | |
4c52b668 | 6039 | Vcurrent_prefix_arg = prefixarg; |
284f4730 JB |
6040 | debug_on_next_call = 0; |
6041 | ||
8c18cbfb | 6042 | if (SYMBOLP (cmd)) |
284f4730 JB |
6043 | { |
6044 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 6045 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 6046 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
6047 | } |
6048 | ||
6049 | while (1) | |
6050 | { | |
ffd56f97 | 6051 | final = Findirect_function (cmd); |
284f4730 JB |
6052 | |
6053 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
6054 | do_autoload (final, cmd); | |
6055 | else | |
6056 | break; | |
6057 | } | |
6058 | ||
8c18cbfb | 6059 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
6060 | { |
6061 | /* If requested, place the macro in the command history. For | |
6062 | other sorts of commands, call-interactively takes care of | |
6063 | this. */ | |
6064 | if (!NILP (record)) | |
6065 | Vcommand_history | |
6066 | = Fcons (Fcons (Qexecute_kbd_macro, | |
6067 | Fcons (final, Fcons (prefixarg, Qnil))), | |
6068 | Vcommand_history); | |
6069 | ||
6070 | return Fexecute_kbd_macro (final, prefixarg); | |
6071 | } | |
8c18cbfb | 6072 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
6073 | { |
6074 | backtrace.next = backtrace_list; | |
6075 | backtrace_list = &backtrace; | |
6076 | backtrace.function = &Qcall_interactively; | |
6077 | backtrace.args = &cmd; | |
6078 | backtrace.nargs = 1; | |
6079 | backtrace.evalargs = 0; | |
6080 | ||
6081 | tem = Fcall_interactively (cmd, record); | |
6082 | ||
6083 | backtrace_list = backtrace.next; | |
6084 | return tem; | |
6085 | } | |
6086 | return Qnil; | |
6087 | } | |
6088 | \f | |
284f4730 JB |
6089 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
6090 | 1, 1, "P", | |
6091 | "Read function name, then read its arguments and call it.") | |
6092 | (prefixarg) | |
6093 | Lisp_Object prefixarg; | |
6094 | { | |
6095 | Lisp_Object function; | |
6096 | char buf[40]; | |
6097 | Lisp_Object saved_keys; | |
6098 | struct gcpro gcpro1; | |
6099 | ||
b0f2a7bf KH |
6100 | saved_keys = Fvector (this_command_key_count, |
6101 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6102 | buf[0] = 0; |
6103 | GCPRO1 (saved_keys); | |
6104 | ||
6105 | if (EQ (prefixarg, Qminus)) | |
6106 | strcpy (buf, "- "); | |
6107 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
6108 | strcpy (buf, "C-u "); | |
8c18cbfb | 6109 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
5d5b907f RS |
6110 | { |
6111 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6112 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
6113 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6114 | sprintf (buf, "%ld ", XINT (XCONS (prefixarg)->car)); | |
6115 | else | |
6116 | abort (); | |
6117 | } | |
8c18cbfb | 6118 | else if (INTEGERP (prefixarg)) |
5d5b907f RS |
6119 | { |
6120 | if (sizeof (int) == sizeof (EMACS_INT)) | |
6121 | sprintf (buf, "%d ", XINT (prefixarg)); | |
6122 | else if (sizeof (long) == sizeof (EMACS_INT)) | |
6123 | sprintf (buf, "%ld ", XINT (prefixarg)); | |
6124 | else | |
6125 | abort (); | |
6126 | } | |
284f4730 JB |
6127 | |
6128 | /* This isn't strictly correct if execute-extended-command | |
6129 | is bound to anything else. Perhaps it should use | |
6130 | this_command_keys? */ | |
6131 | strcat (buf, "M-x "); | |
6132 | ||
6133 | /* Prompt with buf, and then read a string, completing from and | |
6134 | restricting to the set of all defined commands. Don't provide | |
51763820 | 6135 | any initial input. Save the command read on the extended-command |
03b4122a | 6136 | history list. */ |
284f4730 JB |
6137 | function = Fcompleting_read (build_string (buf), |
6138 | Vobarray, Qcommandp, | |
03b4122a | 6139 | Qt, Qnil, Qextended_command_history); |
284f4730 | 6140 | |
1113d9db JB |
6141 | /* Set this_command_keys to the concatenation of saved_keys and |
6142 | function, followed by a RET. */ | |
284f4730 | 6143 | { |
1113d9db | 6144 | struct Lisp_String *str; |
b0f2a7bf | 6145 | Lisp_Object *keys; |
284f4730 JB |
6146 | int i; |
6147 | Lisp_Object tem; | |
6148 | ||
1113d9db JB |
6149 | this_command_key_count = 0; |
6150 | ||
b0f2a7bf KH |
6151 | keys = XVECTOR (saved_keys)->contents; |
6152 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
6153 | add_command_key (keys[i]); | |
1113d9db JB |
6154 | |
6155 | str = XSTRING (function); | |
6156 | for (i = 0; i < str->size; i++) | |
6157 | { | |
bb9e9bed | 6158 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
6159 | add_command_key (tem); |
6160 | } | |
6161 | ||
bb9e9bed | 6162 | XSETFASTINT (tem, '\015'); |
1113d9db | 6163 | add_command_key (tem); |
284f4730 JB |
6164 | } |
6165 | ||
6166 | UNGCPRO; | |
6167 | ||
0a7f1fc0 | 6168 | function = Fintern (function, Qnil); |
d8bcf58e | 6169 | current_kboard->Vprefix_arg = prefixarg; |
284f4730 JB |
6170 | this_command = function; |
6171 | ||
6172 | return Fcommand_execute (function, Qt); | |
6173 | } | |
6174 | \f | |
6175 | ||
6176 | detect_input_pending () | |
6177 | { | |
6178 | if (!input_pending) | |
6179 | get_input_pending (&input_pending); | |
6180 | ||
6181 | return input_pending; | |
6182 | } | |
6183 | ||
ffd56f97 JB |
6184 | /* This is called in some cases before a possible quit. |
6185 | It cases the next call to detect_input_pending to recompute input_pending. | |
6186 | So calling this function unnecessarily can't do any harm. */ | |
6187 | clear_input_pending () | |
6188 | { | |
6189 | input_pending = 0; | |
6190 | } | |
6191 | ||
284f4730 JB |
6192 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
6193 | "T if command input is currently available with no waiting.\n\ | |
6194 | Actually, the value is nil only if we can be sure that no input is available.") | |
6195 | () | |
6196 | { | |
24597608 | 6197 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
6198 | return (Qt); |
6199 | ||
6200 | return detect_input_pending () ? Qt : Qnil; | |
6201 | } | |
6202 | ||
6203 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 6204 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
6205 | () |
6206 | { | |
5160df46 | 6207 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
6208 | Lisp_Object val; |
6209 | ||
6210 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 6211 | return Fvector (total_keys, keys); |
284f4730 JB |
6212 | else |
6213 | { | |
5160df46 JB |
6214 | val = Fvector (NUM_RECENT_KEYS, keys); |
6215 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
6216 | XVECTOR (val)->contents, |
6217 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 6218 | bcopy (keys, |
284f4730 JB |
6219 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
6220 | recent_keys_index * sizeof (Lisp_Object)); | |
6221 | return val; | |
6222 | } | |
6223 | } | |
6224 | ||
6225 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
6226 | "Return the key sequence that invoked this command.\n\ |
6227 | The value is a string or a vector.") | |
284f4730 JB |
6228 | () |
6229 | { | |
86e5706b RS |
6230 | return make_event_array (this_command_key_count, |
6231 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
6232 | } |
6233 | ||
6234 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
6235 | "Return the current depth in recursive edits.") | |
6236 | () | |
6237 | { | |
6238 | Lisp_Object temp; | |
bb9e9bed | 6239 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
6240 | return temp; |
6241 | } | |
6242 | ||
6243 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
6244 | "FOpen dribble file: ", | |
9b2471df RS |
6245 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
6246 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
6247 | (file) |
6248 | Lisp_Object file; | |
6249 | { | |
6250 | if (NILP (file)) | |
6251 | { | |
d0011c11 RS |
6252 | if (dribble) |
6253 | { | |
6254 | fclose (dribble); | |
6255 | dribble = 0; | |
6256 | } | |
284f4730 JB |
6257 | } |
6258 | else | |
6259 | { | |
6260 | file = Fexpand_file_name (file, Qnil); | |
6261 | dribble = fopen (XSTRING (file)->data, "w"); | |
6262 | } | |
6263 | return Qnil; | |
6264 | } | |
6265 | ||
6266 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
6267 | "Discard the contents of the terminal input buffer.\n\ | |
6268 | Also cancel any kbd macro being defined.") | |
6269 | () | |
6270 | { | |
c5fdd383 | 6271 | current_kboard->defining_kbd_macro = Qnil; |
284f4730 JB |
6272 | update_mode_lines++; |
6273 | ||
24597608 | 6274 | Vunread_command_events = Qnil; |
86e5706b | 6275 | unread_command_char = -1; |
284f4730 JB |
6276 | |
6277 | discard_tty_input (); | |
6278 | ||
ff0b5f4c JB |
6279 | /* Without the cast, GCC complains that this assignment loses the |
6280 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
6281 | with that? */ | |
beecf6a1 KH |
6282 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
6283 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
6284 | input_pending = 0; |
6285 | ||
6286 | return Qnil; | |
6287 | } | |
6288 | \f | |
6289 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
6290 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
6291 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
6292 | control, run a subshell instead.\n\n\ | |
284f4730 | 6293 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
6294 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
6295 | \n\ | |
bbdc2092 RS |
6296 | Before suspending, run the normal hook `suspend-hook'.\n\ |
6297 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
6298 | \n\ |
6299 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 6300 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
6301 | (stuffstring) |
6302 | Lisp_Object stuffstring; | |
6303 | { | |
3a69360c | 6304 | Lisp_Object tem; |
284f4730 JB |
6305 | int count = specpdl_ptr - specpdl; |
6306 | int old_height, old_width; | |
6307 | int width, height; | |
b7d2ebbf | 6308 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
6309 | extern init_sys_modes (); |
6310 | ||
6311 | if (!NILP (stuffstring)) | |
6312 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 6313 | |
1e95ed28 JB |
6314 | /* Run the functions in suspend-hook. */ |
6315 | if (!NILP (Vrun_hooks)) | |
6316 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 6317 | |
b7d2ebbf | 6318 | GCPRO1 (stuffstring); |
ff11dfa1 | 6319 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
6320 | reset_sys_modes (); |
6321 | /* sys_suspend can get an error if it tries to fork a subshell | |
6322 | and the system resources aren't available for that. */ | |
6323 | record_unwind_protect (init_sys_modes, 0); | |
6324 | stuff_buffered_input (stuffstring); | |
8026024c KH |
6325 | if (cannot_suspend) |
6326 | sys_subshell (); | |
6327 | else | |
6328 | sys_suspend (); | |
284f4730 JB |
6329 | unbind_to (count, Qnil); |
6330 | ||
6331 | /* Check if terminal/window size has changed. | |
6332 | Note that this is not useful when we are running directly | |
6333 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 6334 | get_frame_size (&width, &height); |
284f4730 | 6335 | if (width != old_width || height != old_height) |
f5ea6163 | 6336 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 6337 | |
1e95ed28 | 6338 | /* Run suspend-resume-hook. */ |
284f4730 JB |
6339 | if (!NILP (Vrun_hooks)) |
6340 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
df0f2ba1 | 6341 | |
284f4730 JB |
6342 | UNGCPRO; |
6343 | return Qnil; | |
6344 | } | |
6345 | ||
6346 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 6347 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
6348 | |
6349 | stuff_buffered_input (stuffstring) | |
6350 | Lisp_Object stuffstring; | |
6351 | { | |
284f4730 JB |
6352 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
6353 | #ifdef BSD | |
6354 | #ifndef BSD4_1 | |
612b78ef | 6355 | register unsigned char *p; |
612b78ef | 6356 | |
8c18cbfb | 6357 | if (STRINGP (stuffstring)) |
284f4730 JB |
6358 | { |
6359 | register int count; | |
6360 | ||
6361 | p = XSTRING (stuffstring)->data; | |
6362 | count = XSTRING (stuffstring)->size; | |
6363 | while (count-- > 0) | |
6364 | stuff_char (*p++); | |
6365 | stuff_char ('\n'); | |
6366 | } | |
6367 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 | 6368 | /* ?? What should this do when we have multiple keyboards?? |
c5fdd383 | 6369 | Should we ignore anything that was typed in at the "wrong" kboard? */ |
beecf6a1 | 6370 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) |
284f4730 | 6371 | { |
beecf6a1 KH |
6372 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
6373 | kbd_fetch_ptr = kbd_buffer; | |
6374 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
6375 | stuff_char (kbd_fetch_ptr->code); | |
6376 | kbd_fetch_ptr->kind = no_event; | |
6377 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
6378 | - kbd_buffer] | |
7b4aedb9 | 6379 | = Qnil); |
284f4730 JB |
6380 | } |
6381 | input_pending = 0; | |
6382 | #endif | |
6383 | #endif /* BSD and not BSD4_1 */ | |
6384 | } | |
6385 | \f | |
ffd56f97 JB |
6386 | set_waiting_for_input (time_to_clear) |
6387 | EMACS_TIME *time_to_clear; | |
284f4730 | 6388 | { |
ffd56f97 | 6389 | input_available_clear_time = time_to_clear; |
284f4730 JB |
6390 | |
6391 | /* Tell interrupt_signal to throw back to read_char, */ | |
6392 | waiting_for_input = 1; | |
6393 | ||
6394 | /* If interrupt_signal was called before and buffered a C-g, | |
6395 | make it run again now, to avoid timing error. */ | |
6396 | if (!NILP (Vquit_flag)) | |
6397 | quit_throw_to_read_char (); | |
284f4730 JB |
6398 | } |
6399 | ||
6400 | clear_waiting_for_input () | |
6401 | { | |
6402 | /* Tell interrupt_signal not to throw back to read_char, */ | |
6403 | waiting_for_input = 0; | |
ffd56f97 | 6404 | input_available_clear_time = 0; |
284f4730 JB |
6405 | } |
6406 | ||
6407 | /* This routine is called at interrupt level in response to C-G. | |
6408 | If interrupt_input, this is the handler for SIGINT. | |
6409 | Otherwise, it is called from kbd_buffer_store_event, | |
6410 | in handling SIGIO or SIGTINT. | |
6411 | ||
6412 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
6413 | immediately throw back to read_char. | |
6414 | ||
6415 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
6416 | This causes eval to throw, when it gets a chance. | |
6417 | If quit-flag is already non-nil, it stops the job right away. */ | |
6418 | ||
6419 | SIGTYPE | |
91c049d4 RS |
6420 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
6421 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
6422 | { |
6423 | char c; | |
6424 | /* Must preserve main program's value of errno. */ | |
6425 | int old_errno = errno; | |
284f4730 JB |
6426 | |
6427 | #ifdef USG | |
7a80a6f6 RS |
6428 | if (!read_socket_hook && NILP (Vwindow_system)) |
6429 | { | |
6430 | /* USG systems forget handlers when they are used; | |
6431 | must reestablish each time */ | |
6432 | signal (SIGINT, interrupt_signal); | |
6433 | signal (SIGQUIT, interrupt_signal); | |
6434 | } | |
284f4730 JB |
6435 | #endif /* USG */ |
6436 | ||
6437 | cancel_echoing (); | |
6438 | ||
d5045cf9 | 6439 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
6440 | { |
6441 | fflush (stdout); | |
6442 | reset_sys_modes (); | |
6443 | sigfree (); | |
6444 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
6445 | /* | |
6446 | * On systems which can suspend the current process and return to the original | |
6447 | * shell, this command causes the user to end up back at the shell. | |
6448 | * The "Auto-save" and "Abort" questions are not asked until | |
6449 | * the user elects to return to emacs, at which point he can save the current | |
6450 | * job and either dump core or continue. | |
6451 | */ | |
6452 | sys_suspend (); | |
6453 | #else | |
6454 | #ifdef VMS | |
6455 | if (sys_suspend () == -1) | |
6456 | { | |
6457 | printf ("Not running as a subprocess;\n"); | |
6458 | printf ("you can continue or abort.\n"); | |
6459 | } | |
6460 | #else /* not VMS */ | |
6461 | /* Perhaps should really fork an inferior shell? | |
6462 | But that would not provide any way to get back | |
6463 | to the original shell, ever. */ | |
6464 | printf ("No support for stopping a process on this operating system;\n"); | |
6465 | printf ("you can continue or abort.\n"); | |
6466 | #endif /* not VMS */ | |
6467 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
6468 | #ifdef MSDOS |
6469 | /* We must remain inside the screen area when the internal terminal | |
6470 | is used. Note that [Enter] is not echoed by dos. */ | |
6471 | cursor_to (0, 0); | |
6472 | #endif | |
284f4730 JB |
6473 | printf ("Auto-save? (y or n) "); |
6474 | fflush (stdout); | |
6475 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
6476 | { |
6477 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
6478 | #ifdef MSDOS |
6479 | printf ("\r\nAuto-save done"); | |
6480 | #else /* not MSDOS */ | |
9fd7d808 | 6481 | printf ("Auto-save done\n"); |
80e4aa30 | 6482 | #endif /* not MSDOS */ |
9fd7d808 | 6483 | } |
284f4730 | 6484 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
6485 | #ifdef MSDOS |
6486 | printf ("\r\nAbort? (y or n) "); | |
6487 | #else /* not MSDOS */ | |
284f4730 JB |
6488 | #ifdef VMS |
6489 | printf ("Abort (and enter debugger)? (y or n) "); | |
6490 | #else /* not VMS */ | |
6491 | printf ("Abort (and dump core)? (y or n) "); | |
6492 | #endif /* not VMS */ | |
80e4aa30 | 6493 | #endif /* not MSDOS */ |
284f4730 JB |
6494 | fflush (stdout); |
6495 | if (((c = getchar ()) & ~040) == 'Y') | |
6496 | abort (); | |
6497 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
6498 | #ifdef MSDOS |
6499 | printf ("\r\nContinuing...\r\n"); | |
6500 | #else /* not MSDOS */ | |
284f4730 | 6501 | printf ("Continuing...\n"); |
80e4aa30 | 6502 | #endif /* not MSDOS */ |
284f4730 JB |
6503 | fflush (stdout); |
6504 | init_sys_modes (); | |
6505 | } | |
6506 | else | |
6507 | { | |
6508 | /* If executing a function that wants to be interrupted out of | |
6509 | and the user has not deferred quitting by binding `inhibit-quit' | |
6510 | then quit right away. */ | |
6511 | if (immediate_quit && NILP (Vinhibit_quit)) | |
6512 | { | |
6513 | immediate_quit = 0; | |
6514 | sigfree (); | |
6515 | Fsignal (Qquit, Qnil); | |
6516 | } | |
6517 | else | |
6518 | /* Else request quit when it's safe */ | |
6519 | Vquit_flag = Qt; | |
6520 | } | |
6521 | ||
6522 | if (waiting_for_input && !echoing) | |
6523 | quit_throw_to_read_char (); | |
6524 | ||
6525 | errno = old_errno; | |
6526 | } | |
6527 | ||
6528 | /* Handle a C-g by making read_char return C-g. */ | |
6529 | ||
6530 | quit_throw_to_read_char () | |
6531 | { | |
6532 | quit_error_check (); | |
6533 | sigfree (); | |
6534 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 6535 | clear_waiting_for_input (); |
284f4730 JB |
6536 | input_pending = 0; |
6537 | ||
24597608 | 6538 | Vunread_command_events = Qnil; |
86e5706b | 6539 | unread_command_char = -1; |
284f4730 | 6540 | |
e6b01c14 JB |
6541 | #ifdef POLL_FOR_INPUT |
6542 | /* May be > 1 if in recursive minibuffer. */ | |
6543 | if (poll_suppress_count == 0) | |
6544 | abort (); | |
6545 | #endif | |
0dfcc832 | 6546 | #ifdef MULTI_FRAME |
4c52b668 KH |
6547 | if (FRAMEP (internal_last_event_frame) |
6548 | && XFRAME (internal_last_event_frame) != selected_frame) | |
719191cf RS |
6549 | do_switch_frame (make_lispy_switch_frame (internal_last_event_frame), |
6550 | Qnil, 0); | |
0dfcc832 | 6551 | #endif |
e6b01c14 | 6552 | |
284f4730 JB |
6553 | _longjmp (getcjmp, 1); |
6554 | } | |
6555 | \f | |
6556 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
6557 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
6558 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
6559 | nil means use CBREAK mode.\n\ | |
6560 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 6561 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
6562 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
6563 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
6564 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
6565 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
6566 | See also `current-input-mode'.") | |
284f4730 JB |
6567 | (interrupt, flow, meta, quit) |
6568 | Lisp_Object interrupt, flow, meta, quit; | |
6569 | { | |
6570 | if (!NILP (quit) | |
8c18cbfb | 6571 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
6572 | error ("set-input-mode: QUIT must be an ASCII character"); |
6573 | ||
6574 | #ifdef POLL_FOR_INPUT | |
6575 | stop_polling (); | |
6576 | #endif | |
284f4730 JB |
6577 | |
6578 | reset_sys_modes (); | |
6579 | #ifdef SIGIO | |
6580 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
284f4730 | 6581 | if (read_socket_hook) |
9a0f60bb KH |
6582 | { |
6583 | /* When using X, don't give the user a real choice, | |
6584 | because we haven't implemented the mechanisms to support it. */ | |
6585 | #ifdef NO_SOCK_SIGIO | |
6586 | interrupt_input = 0; | |
6587 | #else /* not NO_SOCK_SIGIO */ | |
6588 | interrupt_input = 1; | |
284f4730 | 6589 | #endif /* NO_SOCK_SIGIO */ |
9a0f60bb KH |
6590 | } |
6591 | else | |
284f4730 JB |
6592 | interrupt_input = !NILP (interrupt); |
6593 | #else /* not SIGIO */ | |
6594 | interrupt_input = 0; | |
6595 | #endif /* not SIGIO */ | |
9a0f60bb | 6596 | |
284f4730 JB |
6597 | /* Our VMS input only works by interrupts, as of now. */ |
6598 | #ifdef VMS | |
6599 | interrupt_input = 1; | |
6600 | #endif | |
9a0f60bb | 6601 | |
284f4730 | 6602 | flow_control = !NILP (flow); |
b04904fb RS |
6603 | if (NILP (meta)) |
6604 | meta_key = 0; | |
6605 | else if (EQ (meta, Qt)) | |
6606 | meta_key = 1; | |
6607 | else | |
6608 | meta_key = 2; | |
284f4730 JB |
6609 | if (!NILP (quit)) |
6610 | /* Don't let this value be out of range. */ | |
6611 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
6612 | ||
6613 | init_sys_modes (); | |
34f04431 RS |
6614 | |
6615 | #ifdef POLL_FOR_INPUT | |
6616 | poll_suppress_count = 1; | |
6617 | start_polling (); | |
6618 | #endif | |
284f4730 JB |
6619 | return Qnil; |
6620 | } | |
80645119 JB |
6621 | |
6622 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
6623 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
6624 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
6625 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
6626 | nil, Emacs is using CBREAK mode.\n\ | |
6627 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
6628 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
6629 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
6630 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
6631 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
6632 | all 8 bits as the character code.\n\ | |
80645119 JB |
6633 | QUIT is the character Emacs currently uses to quit.\n\ |
6634 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 6635 | `set-input-mode'.") |
80645119 JB |
6636 | () |
6637 | { | |
6638 | Lisp_Object val[4]; | |
6639 | ||
6640 | val[0] = interrupt_input ? Qt : Qnil; | |
6641 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 6642 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 6643 | XSETFASTINT (val[3], quit_char); |
80645119 | 6644 | |
bf673a7a | 6645 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
6646 | } |
6647 | ||
284f4730 | 6648 | \f |
6c6083a9 | 6649 | /* |
c5fdd383 | 6650 | * Set up a new kboard object with reasonable initial values. |
6c6083a9 KH |
6651 | */ |
6652 | void | |
c5fdd383 KH |
6653 | init_kboard (kb) |
6654 | KBOARD *kb; | |
6c6083a9 | 6655 | { |
217258d5 | 6656 | kb->Voverriding_terminal_local_map = Qnil; |
6c7178b9 | 6657 | kb->Vlast_command = Qnil; |
d8bcf58e | 6658 | kb->Vprefix_arg = Qnil; |
c5fdd383 KH |
6659 | kb->kbd_queue = Qnil; |
6660 | kb->kbd_queue_has_data = 0; | |
6661 | kb->immediate_echo = 0; | |
6662 | kb->echoptr = kb->echobuf; | |
6663 | kb->echo_after_prompt = -1; | |
6664 | kb->kbd_macro_buffer = 0; | |
6665 | kb->kbd_macro_bufsize = 0; | |
6666 | kb->defining_kbd_macro = Qnil; | |
6667 | kb->Vlast_kbd_macro = Qnil; | |
6668 | kb->reference_count = 0; | |
7c97ffdc | 6669 | kb->Vsystem_key_alist = Qnil; |
142e6c73 | 6670 | kb->system_key_syms = Qnil; |
9ba47203 | 6671 | kb->Vdefault_minibuffer_frame = Qnil; |
6c6083a9 KH |
6672 | } |
6673 | ||
6674 | /* | |
c5fdd383 | 6675 | * Destroy the contents of a kboard object, but not the object itself. |
6c6083a9 KH |
6676 | * We use this just before deleteing it, or if we're going to initialize |
6677 | * it a second time. | |
6678 | */ | |
e50b8090 | 6679 | static void |
c5fdd383 KH |
6680 | wipe_kboard (kb) |
6681 | KBOARD *kb; | |
6c6083a9 | 6682 | { |
c5fdd383 KH |
6683 | if (kb->kbd_macro_buffer) |
6684 | xfree (kb->kbd_macro_buffer); | |
6c6083a9 KH |
6685 | } |
6686 | ||
e50b8090 KH |
6687 | #ifdef MULTI_KBOARD |
6688 | void | |
6689 | delete_kboard (kb) | |
6690 | KBOARD *kb; | |
6691 | { | |
6692 | KBOARD **kbp; | |
6693 | for (kbp = &all_kboards; *kbp != kb; kbp = &(*kbp)->next_kboard) | |
6694 | if (*kbp == NULL) | |
6695 | abort (); | |
6696 | *kbp = kb->next_kboard; | |
6697 | wipe_kboard (kb); | |
6698 | xfree (kb); | |
6699 | } | |
6700 | #endif | |
6701 | ||
284f4730 JB |
6702 | init_keyboard () |
6703 | { | |
284f4730 JB |
6704 | /* This is correct before outermost invocation of the editor loop */ |
6705 | command_loop_level = -1; | |
6706 | immediate_quit = 0; | |
6707 | quit_char = Ctl ('g'); | |
24597608 | 6708 | Vunread_command_events = Qnil; |
86e5706b | 6709 | unread_command_char = -1; |
284f4730 | 6710 | total_keys = 0; |
9deb415a | 6711 | recent_keys_index = 0; |
beecf6a1 KH |
6712 | kbd_fetch_ptr = kbd_buffer; |
6713 | kbd_store_ptr = kbd_buffer; | |
6714 | kbd_buffer_frame_or_window | |
6715 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 6716 | #ifdef HAVE_MOUSE |
a9d77f1f | 6717 | do_mouse_tracking = Qnil; |
2eb6bfbe | 6718 | #endif |
284f4730 JB |
6719 | input_pending = 0; |
6720 | ||
4c52b668 KH |
6721 | #ifdef MULTI_FRAME |
6722 | /* This means that command_loop_1 won't try to select anything the first | |
6723 | time through. */ | |
6724 | internal_last_event_frame = Qnil; | |
6725 | Vlast_event_frame = internal_last_event_frame; | |
6726 | #endif | |
6727 | ||
c5fdd383 | 6728 | #ifdef MULTI_KBOARD |
aaca43a1 | 6729 | current_kboard = initial_kboard; |
6c6083a9 | 6730 | #endif |
aaca43a1 | 6731 | wipe_kboard (current_kboard); |
c5fdd383 | 6732 | init_kboard (current_kboard); |
07d2b8de | 6733 | |
beecf6a1 KH |
6734 | if (initialized) |
6735 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
6736 | ||
6737 | kbd_buffer_frame_or_window | |
6738 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 6739 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
6740 | { |
6741 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 6742 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
6743 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
6744 | SIGQUIT and we can't tell which one it will give us. */ | |
6745 | signal (SIGQUIT, interrupt_signal); | |
6746 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 6747 | } |
284f4730 JB |
6748 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6749 | #ifdef SIGIO | |
7a80a6f6 RS |
6750 | if (!noninteractive) |
6751 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6752 | #endif /* SIGIO */ |
284f4730 JB |
6753 | |
6754 | /* Use interrupt input by default, if it works and noninterrupt input | |
6755 | has deficiencies. */ | |
6756 | ||
6757 | #ifdef INTERRUPT_INPUT | |
6758 | interrupt_input = 1; | |
6759 | #else | |
6760 | interrupt_input = 0; | |
6761 | #endif | |
6762 | ||
6763 | /* Our VMS input only works by interrupts, as of now. */ | |
6764 | #ifdef VMS | |
6765 | interrupt_input = 1; | |
6766 | #endif | |
6767 | ||
6768 | sigfree (); | |
6769 | dribble = 0; | |
6770 | ||
6771 | if (keyboard_init_hook) | |
6772 | (*keyboard_init_hook) (); | |
6773 | ||
6774 | #ifdef POLL_FOR_INPUT | |
6775 | poll_suppress_count = 1; | |
6776 | start_polling (); | |
6777 | #endif | |
6778 | } | |
6779 | ||
df0f2ba1 | 6780 | /* This type's only use is in syms_of_keyboard, to initialize the |
284f4730 JB |
6781 | event header symbols and put properties on them. */ |
6782 | struct event_head { | |
6783 | Lisp_Object *var; | |
6784 | char *name; | |
6785 | Lisp_Object *kind; | |
6786 | }; | |
6787 | ||
6788 | struct event_head head_table[] = { | |
7b4aedb9 | 6789 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6790 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6791 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6792 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6793 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6794 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6795 | }; |
6796 | ||
6797 | syms_of_keyboard () | |
6798 | { | |
2e894dab RS |
6799 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6800 | staticpro (&Qdisabled_command_hook); | |
6801 | ||
284f4730 JB |
6802 | Qself_insert_command = intern ("self-insert-command"); |
6803 | staticpro (&Qself_insert_command); | |
6804 | ||
6805 | Qforward_char = intern ("forward-char"); | |
6806 | staticpro (&Qforward_char); | |
6807 | ||
6808 | Qbackward_char = intern ("backward-char"); | |
6809 | staticpro (&Qbackward_char); | |
6810 | ||
6811 | Qdisabled = intern ("disabled"); | |
6812 | staticpro (&Qdisabled); | |
6813 | ||
e58aa385 RS |
6814 | Qundefined = intern ("undefined"); |
6815 | staticpro (&Qundefined); | |
6816 | ||
86e5706b RS |
6817 | Qpre_command_hook = intern ("pre-command-hook"); |
6818 | staticpro (&Qpre_command_hook); | |
6819 | ||
6820 | Qpost_command_hook = intern ("post-command-hook"); | |
6821 | staticpro (&Qpost_command_hook); | |
6822 | ||
3ef14e46 RS |
6823 | Qdeferred_action_function = intern ("deferred-action-function"); |
6824 | staticpro (&Qdeferred_action_function); | |
6825 | ||
40932d1a RS |
6826 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6827 | staticpro (&Qcommand_hook_internal); | |
6828 | ||
284f4730 JB |
6829 | Qfunction_key = intern ("function-key"); |
6830 | staticpro (&Qfunction_key); | |
13b5e56c | 6831 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6832 | staticpro (&Qmouse_click); |
284f4730 | 6833 | |
598a9fa7 JB |
6834 | Qmenu_enable = intern ("menu-enable"); |
6835 | staticpro (&Qmenu_enable); | |
6836 | ||
284f4730 JB |
6837 | Qmode_line = intern ("mode-line"); |
6838 | staticpro (&Qmode_line); | |
e5d77022 JB |
6839 | Qvertical_line = intern ("vertical-line"); |
6840 | staticpro (&Qvertical_line); | |
3c370943 JB |
6841 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6842 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6843 | Qmenu_bar = intern ("menu-bar"); |
6844 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6845 | |
6846 | Qabove_handle = intern ("above-handle"); | |
6847 | staticpro (&Qabove_handle); | |
6848 | Qhandle = intern ("handle"); | |
6849 | staticpro (&Qhandle); | |
6850 | Qbelow_handle = intern ("below-handle"); | |
6851 | staticpro (&Qbelow_handle); | |
284f4730 | 6852 | |
cd21b839 | 6853 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6854 | staticpro (&Qevent_kind); |
88cb0656 JB |
6855 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6856 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6857 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6858 | staticpro (&Qevent_symbol_element_mask); | |
6859 | Qmodifier_cache = intern ("modifier-cache"); | |
6860 | staticpro (&Qmodifier_cache); | |
284f4730 | 6861 | |
48e416d4 RS |
6862 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6863 | staticpro (&Qrecompute_lucid_menubar); | |
6864 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6865 | staticpro (&Qactivate_menubar_hook); | |
6866 | ||
f4eef8b4 RS |
6867 | Qpolling_period = intern ("polling-period"); |
6868 | staticpro (&Qpolling_period); | |
6869 | ||
284f4730 JB |
6870 | { |
6871 | struct event_head *p; | |
6872 | ||
6873 | for (p = head_table; | |
6874 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6875 | p++) | |
6876 | { | |
6877 | *p->var = intern (p->name); | |
6878 | staticpro (p->var); | |
6879 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6880 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6881 | } |
6882 | } | |
6883 | ||
7b4aedb9 JB |
6884 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6885 | staticpro (&button_down_location); | |
88cb0656 JB |
6886 | |
6887 | { | |
6888 | int i; | |
6889 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6890 | ||
6891 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6892 | for (i = 0; i < len; i++) | |
86e5706b RS |
6893 | if (modifier_names[i]) |
6894 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6895 | staticpro (&modifier_symbols); |
6896 | } | |
6897 | ||
9deb415a JB |
6898 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6899 | staticpro (&recent_keys); | |
6900 | ||
6569cc8d | 6901 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6902 | staticpro (&this_command_keys); |
6569cc8d | 6903 | |
03b4122a BF |
6904 | Qextended_command_history = intern ("extended-command-history"); |
6905 | Fset (Qextended_command_history, Qnil); | |
6906 | staticpro (&Qextended_command_history); | |
6907 | ||
beecf6a1 KH |
6908 | kbd_buffer_frame_or_window |
6909 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6910 | staticpro (&kbd_buffer_frame_or_window); | |
6911 | ||
24597608 RS |
6912 | accent_key_syms = Qnil; |
6913 | staticpro (&accent_key_syms); | |
6914 | ||
284f4730 JB |
6915 | func_key_syms = Qnil; |
6916 | staticpro (&func_key_syms); | |
6917 | ||
6918 | mouse_syms = Qnil; | |
6919 | staticpro (&mouse_syms); | |
6920 | ||
cd21b839 JB |
6921 | unread_switch_frame = Qnil; |
6922 | staticpro (&unread_switch_frame); | |
6923 | ||
a1706c30 | 6924 | defsubr (&Sevent_convert_list); |
284f4730 JB |
6925 | defsubr (&Sread_key_sequence); |
6926 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6927 | #ifdef HAVE_MOUSE |
284f4730 | 6928 | defsubr (&Strack_mouse); |
2eb6bfbe | 6929 | #endif |
284f4730 JB |
6930 | defsubr (&Sinput_pending_p); |
6931 | defsubr (&Scommand_execute); | |
6932 | defsubr (&Srecent_keys); | |
6933 | defsubr (&Sthis_command_keys); | |
6934 | defsubr (&Ssuspend_emacs); | |
6935 | defsubr (&Sabort_recursive_edit); | |
6936 | defsubr (&Sexit_recursive_edit); | |
6937 | defsubr (&Srecursion_depth); | |
6938 | defsubr (&Stop_level); | |
6939 | defsubr (&Sdiscard_input); | |
6940 | defsubr (&Sopen_dribble_file); | |
6941 | defsubr (&Sset_input_mode); | |
80645119 | 6942 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6943 | defsubr (&Sexecute_extended_command); |
6944 | ||
284f4730 | 6945 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6946 | "Last input event that was part of a command."); |
6947 | ||
186cf719 | 6948 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6949 | "Last input event that was part of a command."); |
284f4730 | 6950 | |
7d6de002 | 6951 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6952 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6953 | Mouse menus give back keys that don't look like mouse events;\n\ |
6954 | this variable holds the actual mouse event that led to the menu,\n\ | |
6955 | so that you can determine whether the command was run by mouse or not."); | |
6956 | ||
284f4730 | 6957 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6958 | "Last input event."); |
6959 | ||
186cf719 | 6960 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6961 | "Last input event."); |
284f4730 | 6962 | |
24597608 | 6963 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6964 | "List of objects to be read as next command input events."); |
284f4730 | 6965 | |
86e5706b RS |
6966 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6967 | "If not -1, an object to be read as next command input event."); | |
6968 | ||
284f4730 JB |
6969 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6970 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6971 | turns into this character followed by foo."); | |
18cd2eeb | 6972 | XSETINT (meta_prefix_char, 033); |
284f4730 | 6973 | |
6c7178b9 | 6974 | DEFVAR_KBOARD ("last-command", Vlast_command, |
284f4730 JB |
6975 | "The last command executed. Normally a symbol with a function definition,\n\ |
6976 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
6977 | `this-command' was set to by that command.\n\ |
6978 | \n\ | |
6979 | The value `mode-exit' is special; it means that the previous command\n\ | |
6980 | read an event that told it to exit, and it did so and unread that event.\n\ | |
6981 | In other words, the present command is the event that made the previous\n\ | |
6982 | command exit.\n\ | |
6983 | \n\ | |
6984 | The value `kill-region' is special; it means that the previous command\n\ | |
6985 | was a kill command."); | |
284f4730 JB |
6986 | |
6987 | DEFVAR_LISP ("this-command", &this_command, | |
6988 | "The command now being executed.\n\ | |
6989 | The command can set this variable; whatever is put here\n\ | |
6990 | will be in `last-command' during the following command."); | |
6991 | this_command = Qnil; | |
6992 | ||
6993 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6994 | "*Number of keyboard input characters between auto-saves.\n\ | |
6995 | Zero means disable autosaving due to number of characters typed."); | |
6996 | auto_save_interval = 300; | |
6997 | ||
6998 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6999 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
7000 | Zero or nil means disable auto-saving due to idleness.\n\ |
7001 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 7002 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 7003 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
7004 | |
7005 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
7006 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
7007 | echo_keystrokes = 1; | |
7008 | ||
7009 | DEFVAR_INT ("polling-period", &polling_period, | |
7010 | "*Interval between polling for input during Lisp execution.\n\ | |
7011 | The reason for polling is to make C-g work to stop a running program.\n\ | |
7012 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
7013 | Polling is automatically disabled in all other cases."); | |
7014 | polling_period = 2; | |
df0f2ba1 | 7015 | |
564dc952 | 7016 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 7017 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
7018 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
7019 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 7020 | by position only."); |
aab06933 | 7021 | Vdouble_click_time = make_number (500); |
fbcd35bd | 7022 | |
03361bcc RS |
7023 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
7024 | "*Non-nil means inhibit local map menu bar menus."); | |
7025 | inhibit_local_menu_bar_menus = 0; | |
7026 | ||
284f4730 | 7027 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 7028 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
7029 | num_input_keys = 0; |
7030 | ||
4c52b668 KH |
7031 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
7032 | "The frame in which the most recently read event occurred.\n\ | |
7033 | If the last event came from a keyboard macro, this is set to `macro'."); | |
7034 | Vlast_event_frame = Qnil; | |
7035 | ||
7e85b935 | 7036 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
7037 | "Character to recognize as meaning Help.\n\ |
7038 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
7039 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 7040 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 | 7041 | |
ecb7cb34 KH |
7042 | DEFVAR_LISP ("help-event-list", &Vhelp_event_list, |
7043 | "List of input events to recognize as meaning Help.\n\ | |
7044 | These work just like the value of `help-char' (see that)."); | |
7045 | Vhelp_event_list = Qnil; | |
7046 | ||
284f4730 | 7047 | DEFVAR_LISP ("help-form", &Vhelp_form, |
7e85b935 | 7048 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
7049 | If the form returns a string, that string is displayed.\n\ |
7050 | If `help-form' is nil, the help char is not recognized."); | |
7051 | Vhelp_form = Qnil; | |
7052 | ||
7e85b935 RS |
7053 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
7054 | "Command to run when `help-char' character follows a prefix key.\n\ | |
7055 | This command is used only when there is no actual binding\n\ | |
7056 | for that character after that prefix key."); | |
7057 | Vprefix_help_command = Qnil; | |
7058 | ||
284f4730 JB |
7059 | DEFVAR_LISP ("top-level", &Vtop_level, |
7060 | "Form to evaluate when Emacs starts up.\n\ | |
7061 | Useful to set before you dump a modified Emacs."); | |
7062 | Vtop_level = Qnil; | |
7063 | ||
7064 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
7065 | "String used as translate table for keyboard input, or nil.\n\ | |
7066 | Each character is looked up in this string and the contents used instead.\n\ | |
7067 | If string is of length N, character codes N and up are untranslated."); | |
7068 | Vkeyboard_translate_table = Qnil; | |
7069 | ||
a612e298 RS |
7070 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
7071 | "Keymap of key translations that can override keymaps.\n\ | |
7072 | This keymap works like `function-key-map', but comes after that,\n\ | |
7073 | and applies even for keys that have ordinary bindings."); | |
7074 | Vkey_translation_map = Qnil; | |
7075 | ||
8026024c KH |
7076 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
7077 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
7078 | even if the operating system has support for stopping a process."); | |
7079 | cannot_suspend = 0; | |
7080 | ||
284f4730 | 7081 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 7082 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 7083 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
7084 | for elements that have prompt strings.\n\ |
7085 | The menu is displayed on the screen\n\ | |
7086 | if X menus were enabled at configuration\n\ | |
7087 | time and the previous event was a mouse click prefix key.\n\ | |
7088 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
7089 | menu_prompting = 1; |
7090 | ||
7091 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
7092 | "Character to see next line of menu prompt.\n\ | |
7093 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 7094 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
7095 | |
7096 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
7097 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
7098 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
7099 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 7100 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
7101 | all input characters will have the control modifier applied to them.\n\ |
7102 | \n\ | |
9d9f56dd | 7103 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 7104 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 7105 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 7106 | cancels any modification."); |
9fa4395d | 7107 | extra_keyboard_modifiers = 0; |
86e5706b RS |
7108 | |
7109 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
7110 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
7111 | The command loop sets this to nil before each command,\n\ | |
7112 | and tests the value when the command returns.\n\ | |
7113 | Buffer modification stores t in this variable."); | |
7114 | Vdeactivate_mark = Qnil; | |
7115 | ||
b0f2a7bf KH |
7116 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
7117 | "Temporary storage of pre-command-hook or post-command-hook."); | |
7118 | Vcommand_hook_internal = Qnil; | |
7119 | ||
86e5706b | 7120 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
7121 | "Normal hook run before each command is executed.\n\ |
7122 | While the hook is run, its value is temporarily set to nil\n\ | |
7123 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
7124 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
7125 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
7126 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
7127 | Vpre_command_hook = Qnil; |
7128 | ||
7129 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
7130 | "Normal hook run after each command is executed.\n\ |
7131 | While the hook is run, its value is temporarily set to nil\n\ | |
7132 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
7133 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
7134 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
7135 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 7136 | Vpost_command_hook = Qnil; |
48e416d4 RS |
7137 | |
7138 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
7139 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
7140 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 7141 | |
9f9c0e27 RS |
7142 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
7143 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 7144 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 7145 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 7146 | |
217258d5 KH |
7147 | DEFVAR_KBOARD ("overriding-terminal-local-map", |
7148 | Voverriding_terminal_local_map, | |
7149 | "Keymap that overrides all other local keymaps.\n\ | |
7150 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
7151 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
7152 | ||
9dd3131c RS |
7153 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
7154 | "Keymap that overrides all other local keymaps.\n\ | |
7155 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
7156 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
7157 | Voverriding_local_map = Qnil; | |
7158 | ||
d0a49716 RS |
7159 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
7160 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
7161 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
7162 | and the minor mode maps regardless of `overriding-local-map'."); | |
7163 | Voverriding_local_map_menu_flag = Qnil; | |
7164 | ||
71edead1 | 7165 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
a53c7666 | 7166 | "*Non-nil means generate motion events for mouse motion."); |
80e4aa30 | 7167 | |
7c97ffdc | 7168 | DEFVAR_KBOARD ("system-key-alist", Vsystem_key_alist, |
270a208f | 7169 | "Alist of system-specific X windows key symbols.\n\ |
80e4aa30 | 7170 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 7171 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 7172 | and SYMBOL is its name."); |
8a792f3a RS |
7173 | |
7174 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
7175 | "List of deferred actions to be performed at a later time.\n\ | |
7176 | The precise format isn't relevant here; we just check whether it is nil."); | |
7177 | Vdeferred_action_list = Qnil; | |
7178 | ||
7179 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
7180 | "Function to call to handle deferred actions, after each command.\n\ | |
7181 | This function is called with no arguments after each command\n\ | |
7182 | whenever `deferred-action-list' is non-nil."); | |
7183 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
7184 | } |
7185 | ||
7186 | keys_of_keyboard () | |
7187 | { | |
7188 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
7189 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
7190 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
7191 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
7192 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
7193 | } |