Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
3a22ee35 | 2 | Copyright (C) 1985,86,87,88,89,93,94 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 JB |
24 | #include <stdio.h> |
25 | #undef NULL | |
26 | #include "termchar.h" | |
27 | #include "termopts.h" | |
28 | #include "lisp.h" | |
29 | #include "termhooks.h" | |
30 | #include "macros.h" | |
ff11dfa1 | 31 | #include "frame.h" |
284f4730 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "buffer.h" | |
35 | #include "disptab.h" | |
f4255cd1 | 36 | #include "dispextern.h" |
284f4730 | 37 | #include "keyboard.h" |
497ba7a1 | 38 | #include "intervals.h" |
9ac0d9e0 | 39 | #include "blockinput.h" |
284f4730 JB |
40 | #include <setjmp.h> |
41 | #include <errno.h> | |
42 | ||
80e4aa30 RS |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #include <time.h> | |
46 | #else /* not MSDOS */ | |
284f4730 JB |
47 | #ifndef VMS |
48 | #include <sys/ioctl.h> | |
284f4730 | 49 | #endif |
80e4aa30 | 50 | #endif /* not MSDOS */ |
284f4730 | 51 | |
52baf19e | 52 | #include "syssignal.h" |
6ef5b54f | 53 | #include "systty.h" |
52baf19e | 54 | |
c5e3b6c5 RS |
55 | /* This is to get the definitions of the XK_ symbols. */ |
56 | #ifdef HAVE_X_WINDOWS | |
57 | #include "xterm.h" | |
58 | #endif | |
59 | ||
0c2611c5 RS |
60 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
61 | #include "systime.h" | |
62 | ||
52baf19e JB |
63 | extern int errno; |
64 | ||
9ac0d9e0 JB |
65 | /* Variables for blockinput.h: */ |
66 | ||
67 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 68 | int interrupt_input_blocked; |
9ac0d9e0 JB |
69 | |
70 | /* Nonzero means an input interrupt has arrived | |
71 | during the current critical section. */ | |
63927c41 | 72 | int interrupt_input_pending; |
9ac0d9e0 JB |
73 | |
74 | ||
437f6112 RS |
75 | /* File descriptor to use for input. */ |
76 | extern int input_fd; | |
284f4730 | 77 | |
bcce3e02 | 78 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
79 | /* Make all keyboard buffers much bigger when using X windows. */ |
80 | #define KBD_BUFFER_SIZE 4096 | |
81 | #else /* No X-windows, character input */ | |
82 | #define KBD_BUFFER_SIZE 256 | |
83 | #endif /* No X-windows */ | |
84 | ||
85 | /* Following definition copied from eval.c */ | |
86 | ||
87 | struct backtrace | |
88 | { | |
89 | struct backtrace *next; | |
90 | Lisp_Object *function; | |
91 | Lisp_Object *args; /* Points to vector of args. */ | |
92 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
93 | args points to slot holding list of | |
94 | unevalled args */ | |
95 | char evalargs; | |
96 | }; | |
97 | ||
98 | /* Non-nil disable property on a command means | |
99 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 100 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
101 | |
102 | #define NUM_RECENT_KEYS (100) | |
103 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
104 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 105 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 106 | |
6569cc8d JB |
107 | /* Vector holding the key sequence that invoked the current command. |
108 | It is reused for each command, and it may be longer than the current | |
109 | sequence; this_command_key_count indicates how many elements | |
110 | actually mean something. | |
111 | It's easier to staticpro a single Lisp_Object than an array. */ | |
112 | Lisp_Object this_command_keys; | |
113 | int this_command_key_count; | |
284f4730 JB |
114 | |
115 | extern int minbuf_level; | |
116 | ||
117 | extern struct backtrace *backtrace_list; | |
118 | ||
119 | /* Nonzero means do menu prompting. */ | |
120 | static int menu_prompting; | |
121 | ||
122 | /* Character to see next line of menu prompt. */ | |
123 | static Lisp_Object menu_prompt_more_char; | |
124 | ||
125 | /* For longjmp to where kbd input is being done. */ | |
126 | static jmp_buf getcjmp; | |
127 | ||
128 | /* True while doing kbd input. */ | |
129 | int waiting_for_input; | |
130 | ||
131 | /* True while displaying for echoing. Delays C-g throwing. */ | |
132 | static int echoing; | |
133 | ||
03361bcc RS |
134 | /* Nonzero means disregard local maps for the menu bar. */ |
135 | static int inhibit_local_menu_bar_menus; | |
136 | ||
80e4aa30 | 137 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
138 | int immediate_quit; |
139 | ||
140 | /* Character to recognize as the help char. */ | |
7e85b935 | 141 | Lisp_Object Vhelp_char; |
284f4730 JB |
142 | |
143 | /* Form to execute when help char is typed. */ | |
144 | Lisp_Object Vhelp_form; | |
145 | ||
7e85b935 RS |
146 | /* Command to run when the help character follows a prefix key. */ |
147 | Lisp_Object Vprefix_help_command; | |
148 | ||
9f9c0e27 RS |
149 | /* List of items that should move to the end of the menu bar. */ |
150 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 151 | |
284f4730 JB |
152 | /* Character that causes a quit. Normally C-g. |
153 | ||
154 | If we are running on an ordinary terminal, this must be an ordinary | |
155 | ASCII char, since we want to make it our interrupt character. | |
156 | ||
157 | If we are not running on an ordinary terminal, it still needs to be | |
158 | an ordinary ASCII char. This character needs to be recognized in | |
159 | the input interrupt handler. At this point, the keystroke is | |
160 | represented as a struct input_event, while the desired quit | |
161 | character is specified as a lispy event. The mapping from struct | |
162 | input_events to lispy events cannot run in an interrupt handler, | |
163 | and the reverse mapping is difficult for anything but ASCII | |
164 | keystrokes. | |
165 | ||
166 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
167 | ASCII character. */ | |
168 | int quit_char; | |
169 | ||
170 | extern Lisp_Object current_global_map; | |
171 | extern int minibuf_level; | |
172 | ||
9dd3131c RS |
173 | /* If non-nil, this is a map that overrides all other local maps. */ |
174 | Lisp_Object Voverriding_local_map; | |
175 | ||
d0a49716 RS |
176 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
177 | Lisp_Object Voverriding_local_map_menu_flag; | |
178 | ||
284f4730 JB |
179 | /* Current depth in recursive edits. */ |
180 | int command_loop_level; | |
181 | ||
182 | /* Total number of times command_loop has read a key sequence. */ | |
183 | int num_input_keys; | |
184 | ||
185 | /* Last input character read as a command. */ | |
186 | Lisp_Object last_command_char; | |
187 | ||
7d6de002 RS |
188 | /* Last input character read as a command, not counting menus |
189 | reached by the mouse. */ | |
190 | Lisp_Object last_nonmenu_event; | |
191 | ||
284f4730 JB |
192 | /* Last input character read for any purpose. */ |
193 | Lisp_Object last_input_char; | |
194 | ||
dbc4e1c1 | 195 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 196 | Lisp_Object Vunread_command_events; |
284f4730 | 197 | |
86e5706b RS |
198 | /* If not -1, an event to be read as subsequent command input. */ |
199 | int unread_command_char; | |
200 | ||
cd21b839 JB |
201 | /* If not Qnil, this is a switch-frame event which we decided to put |
202 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 203 | next command input, after any unread_command_events. |
8f805655 JB |
204 | |
205 | read_key_sequence uses this to delay switch-frame events until the | |
206 | end of the key sequence; Fread_char uses it to put off switch-frame | |
207 | events until a non-ASCII event is acceptable as input. */ | |
208 | Lisp_Object unread_switch_frame; | |
cd21b839 | 209 | |
9fa4395d RS |
210 | /* A mask of extra modifier bits to put into every keyboard char. */ |
211 | int extra_keyboard_modifiers; | |
212 | ||
284f4730 JB |
213 | /* Char to use as prefix when a meta character is typed in. |
214 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
215 | ||
216 | Lisp_Object meta_prefix_char; | |
217 | ||
218 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
219 | static int last_non_minibuf_size; | |
220 | ||
06ef7355 | 221 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
222 | static Lisp_Object Vauto_save_timeout; |
223 | ||
224 | /* Total number of times read_char has returned. */ | |
225 | int num_input_chars; | |
226 | ||
51172b6d RS |
227 | /* Total number of times read_char has returned, outside of macros. */ |
228 | int num_nonmacro_input_chars; | |
229 | ||
284f4730 JB |
230 | /* Auto-save automatically when this many characters have been typed |
231 | since the last time. */ | |
232 | ||
233 | static int auto_save_interval; | |
234 | ||
51172b6d | 235 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
236 | |
237 | int last_auto_save; | |
238 | ||
239 | /* Last command executed by the editor command loop, not counting | |
240 | commands that set the prefix argument. */ | |
241 | ||
242 | Lisp_Object last_command; | |
243 | ||
244 | /* The command being executed by the command loop. | |
245 | Commands may set this, and the value set will be copied into last_command | |
246 | instead of the actual command. */ | |
247 | Lisp_Object this_command; | |
248 | ||
b453f72e KH |
249 | /* The value of point when the last command was executed. */ |
250 | int last_point_position; | |
251 | ||
047688cb RS |
252 | /* The buffer that was current when the last command was started. */ |
253 | Lisp_Object last_point_position_buffer; | |
254 | ||
07d2b8de | 255 | #ifdef MULTI_FRAME |
fce33686 | 256 | /* The frame in which the last input event occurred, or Qmacro if the |
3c370943 JB |
257 | last event came from a macro. We use this to determine when to |
258 | generate switch-frame events. This may be cleared by functions | |
259 | like Fselect_frame, to make sure that a switch-frame event is | |
260 | generated by the next character. */ | |
261 | Lisp_Object internal_last_event_frame; | |
a974bea1 | 262 | #endif |
3c370943 JB |
263 | |
264 | /* A user-visible version of the above, intended to allow users to | |
265 | figure out where the last event came from, if the event doesn't | |
266 | carry that information itself (i.e. if it was a character). */ | |
ff11dfa1 | 267 | Lisp_Object Vlast_event_frame; |
284f4730 | 268 | |
1113d9db JB |
269 | /* The timestamp of the last input event we received from the X server. |
270 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
271 | unsigned long last_event_timestamp; |
272 | ||
273 | Lisp_Object Qself_insert_command; | |
274 | Lisp_Object Qforward_char; | |
275 | Lisp_Object Qbackward_char; | |
e58aa385 | 276 | Lisp_Object Qundefined; |
284f4730 JB |
277 | |
278 | /* read_key_sequence stores here the command definition of the | |
279 | key sequence that it reads. */ | |
280 | Lisp_Object read_key_sequence_cmd; | |
281 | ||
282 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
283 | Lisp_Object Vtop_level; | |
284 | ||
285 | /* User-supplied string to translate input characters through. */ | |
286 | Lisp_Object Vkeyboard_translate_table; | |
287 | ||
288 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
289 | extern Lisp_Object Vfunction_key_map; | |
290 | ||
a612e298 RS |
291 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
292 | Lisp_Object Vkey_translation_map; | |
293 | ||
86e5706b RS |
294 | /* Non-nil means deactivate the mark at end of this command. */ |
295 | Lisp_Object Vdeactivate_mark; | |
296 | ||
48e416d4 RS |
297 | /* Menu bar specified in Lucid Emacs fashion. */ |
298 | ||
299 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
300 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
301 | ||
86e5706b RS |
302 | /* Hooks to run before and after each command. */ |
303 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
304 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 305 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 306 | |
8a792f3a RS |
307 | /* List of deferred actions to be performed at a later time. |
308 | The precise format isn't relevant here; we just check whether it is nil. */ | |
309 | Lisp_Object Vdeferred_action_list; | |
310 | ||
311 | /* Function to call to handle deferred actions, when there are any. */ | |
312 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 313 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 314 | |
284f4730 JB |
315 | /* File in which we write all commands we read. */ |
316 | FILE *dribble; | |
317 | ||
318 | /* Nonzero if input is available. */ | |
319 | int input_pending; | |
320 | ||
b04904fb RS |
321 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
322 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
323 | ||
284f4730 JB |
324 | int meta_key; |
325 | ||
326 | extern char *pending_malloc_warning; | |
327 | ||
328 | /* Circular buffer for pre-read keyboard input. */ | |
329 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
330 | ||
7b4aedb9 | 331 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. |
4bb994d1 | 332 | |
7b4aedb9 JB |
333 | The interrupt-level event handlers will never enqueue an event on a |
334 | frame which is not in Vframe_list, and once an event is dequeued, | |
3c370943 JB |
335 | internal_last_event_frame or the event itself points to the frame. |
336 | So that's all fine. | |
4bb994d1 JB |
337 | |
338 | But while the event is sitting in the queue, it's completely | |
339 | unprotected. Suppose the user types one command which will run for | |
340 | a while and then delete a frame, and then types another event at | |
341 | the frame that will be deleted, before the command gets around to | |
342 | it. Suppose there are no references to this frame elsewhere in | |
343 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
344 | have an event referring to a freed frame, which will crash Emacs | |
345 | when it is dequeued. | |
346 | ||
3c370943 | 347 | Similar things happen when an event on a scroll bar is enqueued; the |
7b4aedb9 | 348 | window may be deleted while the event is in the queue. |
4bb994d1 | 349 | |
7b4aedb9 JB |
350 | So, we use this vector to protect the frame_or_window field in the |
351 | event queue. That way, they'll be dequeued as dead frames or | |
352 | windows, but still valid lisp objects. | |
353 | ||
354 | If kbd_buffer[i].kind != no_event, then | |
355 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
356 | == kbd_buffer[i].frame_or_window. */ | |
357 | static Lisp_Object kbd_buffer_frame_or_window; | |
4bb994d1 | 358 | |
284f4730 JB |
359 | /* Pointer to next available character in kbd_buffer. |
360 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
361 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
362 | next available char is in kbd_buffer[0]. */ | |
363 | static struct input_event *kbd_fetch_ptr; | |
364 | ||
365 | /* Pointer to next place to store character in kbd_buffer. This | |
366 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
367 | character should go in kbd_buffer[0]. */ | |
c56fbd24 | 368 | static volatile struct input_event *kbd_store_ptr; |
284f4730 JB |
369 | |
370 | /* The above pair of variables forms a "queue empty" flag. When we | |
371 | enqueue a non-hook event, we increment kbd_write_count. When we | |
372 | dequeue a non-hook event, we increment kbd_read_count. We say that | |
4bb994d1 | 373 | there is input available iff the two counters are not equal. |
284f4730 JB |
374 | |
375 | Why not just have a flag set and cleared by the enqueuing and | |
376 | dequeuing functions? Such a flag could be screwed up by interrupts | |
377 | at inopportune times. */ | |
378 | ||
2eb6bfbe | 379 | #ifdef HAVE_MOUSE |
a9d77f1f RS |
380 | /* If this flag is a frame, we check mouse_moved to see when the |
381 | mouse moves, and motion events will appear in the input stream. | |
382 | Otherwise, mouse motion is ignored. */ | |
383 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
384 | |
385 | /* The window system handling code should set this if the mouse has | |
386 | moved since the last call to the mouse_position_hook. Calling that | |
387 | hook should clear this. Code assumes that if this is set, it can | |
388 | call mouse_position_hook to get the promised position, so don't set | |
389 | it unless you're prepared to substantiate the claim! */ | |
390 | int mouse_moved; | |
391 | ||
392 | /* True iff there is an event in kbd_buffer, or if mouse tracking is | |
393 | enabled and there is a new mouse position in the mouse movement | |
394 | buffer. Note that if this is false, that doesn't mean that there | |
395 | is readable input; all the events in the queue might be button-up | |
396 | events, and do_mouse_tracking might be off. */ | |
397 | #define EVENT_QUEUES_EMPTY \ | |
a9d77f1f RS |
398 | ((kbd_fetch_ptr == kbd_store_ptr) \ |
399 | && (! FRAMEP (do_mouse_tracking) || !mouse_moved)) | |
284f4730 | 400 | |
2eb6bfbe RM |
401 | #else /* Not HAVE_MOUSE. */ |
402 | #define EVENT_QUEUES_EMPTY (kbd_fetch_ptr == kbd_store_ptr) | |
403 | #endif /* HAVE_MOUSE. */ | |
284f4730 JB |
404 | |
405 | /* Symbols to head events. */ | |
406 | Lisp_Object Qmouse_movement; | |
3c370943 | 407 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 408 | Lisp_Object Qswitch_frame; |
bbdc2092 | 409 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
410 | Lisp_Object Qiconify_frame; |
411 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 412 | |
284f4730 JB |
413 | /* Symbols to denote kinds of events. */ |
414 | Lisp_Object Qfunction_key; | |
415 | Lisp_Object Qmouse_click; | |
416 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
417 | |
418 | /* Properties of event headers. */ | |
419 | Lisp_Object Qevent_kind; | |
88cb0656 | 420 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 421 | |
598a9fa7 JB |
422 | Lisp_Object Qmenu_enable; |
423 | ||
0a7f1fc0 JB |
424 | /* An event header symbol HEAD may have a property named |
425 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
426 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
427 | mask of modifiers applied to it. If present, this is used to help | |
428 | speed up parse_modifiers. */ | |
429 | Lisp_Object Qevent_symbol_element_mask; | |
430 | ||
431 | /* An unmodified event header BASE may have a property named | |
432 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
433 | modified versions of BASE. If present, this helps speed up | |
434 | apply_modifiers. */ | |
435 | Lisp_Object Qmodifier_cache; | |
436 | ||
5ec75a55 | 437 | /* Symbols to use for parts of windows. */ |
284f4730 | 438 | Lisp_Object Qmode_line; |
e5d77022 | 439 | Lisp_Object Qvertical_line; |
3c370943 | 440 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
441 | Lisp_Object Qmenu_bar; |
442 | ||
443 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 444 | |
f4255cd1 JB |
445 | Lisp_Object recursive_edit_unwind (), command_loop (); |
446 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 447 | Lisp_Object Qextended_command_history; |
284f4730 | 448 | |
f4eef8b4 RS |
449 | Lisp_Object Qpolling_period; |
450 | ||
ffd56f97 JB |
451 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
452 | happens. */ | |
453 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
454 | |
455 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
456 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
457 | int interrupt_input; | |
458 | ||
459 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
460 | int interrupts_deferred; | |
461 | ||
462 | /* nonzero means use ^S/^Q for flow control. */ | |
463 | int flow_control; | |
464 | ||
284f4730 JB |
465 | /* Allow m- file to inhibit use of FIONREAD. */ |
466 | #ifdef BROKEN_FIONREAD | |
467 | #undef FIONREAD | |
468 | #endif | |
469 | ||
470 | /* We are unable to use interrupts if FIONREAD is not available, | |
471 | so flush SIGIO so we won't try. */ | |
472 | #ifndef FIONREAD | |
473 | #ifdef SIGIO | |
474 | #undef SIGIO | |
475 | #endif | |
476 | #endif | |
477 | ||
34f04431 RS |
478 | /* If we support X Windows, turn on the code to poll periodically |
479 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 480 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
481 | #define POLL_FOR_INPUT |
482 | #endif | |
284f4730 JB |
483 | \f |
484 | /* Global variable declarations. */ | |
485 | ||
486 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
487 | void (*keyboard_init_hook) (); | |
488 | ||
489 | static int read_avail_input (); | |
490 | static void get_input_pending (); | |
9fd7d808 | 491 | static int readable_events (); |
8150596a RS |
492 | static Lisp_Object read_char_x_menu_prompt (); |
493 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
494 | static Lisp_Object make_lispy_event (); |
495 | static Lisp_Object make_lispy_movement (); | |
496 | static Lisp_Object modify_event_symbol (); | |
497 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
498 | |
499 | /* > 0 if we are to echo keystrokes. */ | |
500 | static int echo_keystrokes; | |
501 | ||
502 | /* Nonzero means echo each character as typed. */ | |
503 | static int immediate_echo; | |
504 | ||
505 | /* The text we're echoing in the modeline - partial key sequences, | |
f4255cd1 JB |
506 | usually. '\0'-terminated. This really shouldn't have a fixed size. */ |
507 | static char echobuf[300]; | |
284f4730 JB |
508 | |
509 | /* Where to append more text to echobuf if we want to. */ | |
510 | static char *echoptr; | |
511 | ||
7a80a6f6 RS |
512 | /* If we have echoed a prompt string specified by the user, |
513 | this is its length. Otherwise this is -1. */ | |
514 | static int echo_after_prompt; | |
515 | ||
8026024c KH |
516 | /* Nonzero means don't try to suspend even if the operating system seems |
517 | to support it. */ | |
518 | static int cannot_suspend; | |
519 | ||
284f4730 JB |
520 | #define min(a,b) ((a)<(b)?(a):(b)) |
521 | #define max(a,b) ((a)>(b)?(a):(b)) | |
522 | ||
523 | /* Install the string STR as the beginning of the string of echoing, | |
524 | so that it serves as a prompt for the next character. | |
525 | Also start echoing. */ | |
526 | ||
527 | echo_prompt (str) | |
528 | char *str; | |
529 | { | |
530 | int len = strlen (str); | |
7a80a6f6 | 531 | |
284f4730 JB |
532 | if (len > sizeof echobuf - 4) |
533 | len = sizeof echobuf - 4; | |
0a7f1fc0 | 534 | bcopy (str, echobuf, len); |
284f4730 | 535 | echoptr = echobuf + len; |
0a7f1fc0 | 536 | *echoptr = '\0'; |
284f4730 | 537 | |
7a80a6f6 RS |
538 | echo_after_prompt = len; |
539 | ||
284f4730 JB |
540 | echo (); |
541 | } | |
542 | ||
543 | /* Add C to the echo string, if echoing is going on. | |
544 | C can be a character, which is printed prettily ("M-C-x" and all that | |
545 | jazz), or a symbol, whose name is printed. */ | |
546 | ||
547 | echo_char (c) | |
548 | Lisp_Object c; | |
549 | { | |
550 | extern char *push_key_description (); | |
551 | ||
552 | if (immediate_echo) | |
553 | { | |
554 | char *ptr = echoptr; | |
555 | ||
556 | if (ptr != echobuf) | |
557 | *ptr++ = ' '; | |
558 | ||
559 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 560 | c = EVENT_HEAD (c); |
284f4730 | 561 | |
8c18cbfb | 562 | if (INTEGERP (c)) |
284f4730 JB |
563 | { |
564 | if (ptr - echobuf > sizeof echobuf - 6) | |
565 | return; | |
566 | ||
cb5df6ae | 567 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 568 | } |
8c18cbfb | 569 | else if (SYMBOLP (c)) |
284f4730 JB |
570 | { |
571 | struct Lisp_String *name = XSYMBOL (c)->name; | |
572 | if (((ptr - echobuf) + name->size + 4) > sizeof echobuf) | |
573 | return; | |
574 | bcopy (name->data, ptr, name->size); | |
575 | ptr += name->size; | |
576 | } | |
577 | ||
7e85b935 | 578 | if (echoptr == echobuf && EQ (c, Vhelp_char)) |
284f4730 JB |
579 | { |
580 | strcpy (ptr, " (Type ? for further options)"); | |
581 | ptr += strlen (ptr); | |
582 | } | |
583 | ||
584 | *ptr = 0; | |
585 | echoptr = ptr; | |
586 | ||
587 | echo (); | |
588 | } | |
589 | } | |
590 | ||
591 | /* Temporarily add a dash to the end of the echo string if it's not | |
592 | empty, so that it serves as a mini-prompt for the very next character. */ | |
593 | ||
594 | echo_dash () | |
595 | { | |
596 | if (!immediate_echo && echoptr == echobuf) | |
597 | return; | |
7a80a6f6 | 598 | /* Do nothing if we just printed a prompt. */ |
7d637a0d | 599 | if (echo_after_prompt == echoptr - echobuf) |
7a80a6f6 | 600 | return; |
4bafa972 JB |
601 | /* Do nothing if not echoing at all. */ |
602 | if (echoptr == 0) | |
603 | return; | |
284f4730 JB |
604 | |
605 | /* Put a dash at the end of the buffer temporarily, | |
606 | but make it go away when the next character is added. */ | |
607 | echoptr[0] = '-'; | |
608 | echoptr[1] = 0; | |
609 | ||
610 | echo (); | |
611 | } | |
612 | ||
613 | /* Display the current echo string, and begin echoing if not already | |
614 | doing so. */ | |
615 | ||
616 | echo () | |
617 | { | |
618 | if (!immediate_echo) | |
619 | { | |
620 | int i; | |
621 | immediate_echo = 1; | |
622 | ||
623 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
624 | { |
625 | Lisp_Object c; | |
626 | c = XVECTOR (this_command_keys)->contents[i]; | |
627 | if (! (EVENT_HAS_PARAMETERS (c) | |
628 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
629 | echo_char (c); | |
630 | } | |
284f4730 JB |
631 | echo_dash (); |
632 | } | |
633 | ||
634 | echoing = 1; | |
635 | message1 (echobuf); | |
636 | echoing = 0; | |
637 | ||
638 | if (waiting_for_input && !NILP (Vquit_flag)) | |
639 | quit_throw_to_read_char (); | |
640 | } | |
641 | ||
642 | /* Turn off echoing, for the start of a new command. */ | |
643 | ||
644 | cancel_echoing () | |
645 | { | |
646 | immediate_echo = 0; | |
647 | echoptr = echobuf; | |
7a80a6f6 | 648 | echo_after_prompt = -1; |
284f4730 JB |
649 | } |
650 | ||
651 | /* Return the length of the current echo string. */ | |
652 | ||
653 | static int | |
654 | echo_length () | |
655 | { | |
656 | return echoptr - echobuf; | |
657 | } | |
658 | ||
659 | /* Truncate the current echo message to its first LEN chars. | |
660 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 661 | switches frames while entering a key sequence. */ |
284f4730 JB |
662 | |
663 | static void | |
664 | echo_truncate (len) | |
665 | int len; | |
666 | { | |
667 | echobuf[len] = '\0'; | |
0a7f1fc0 | 668 | echoptr = echobuf + len; |
40932d1a | 669 | truncate_echo_area (len); |
284f4730 JB |
670 | } |
671 | ||
672 | \f | |
673 | /* Functions for manipulating this_command_keys. */ | |
674 | static void | |
675 | add_command_key (key) | |
676 | Lisp_Object key; | |
677 | { | |
6569cc8d JB |
678 | int size = XVECTOR (this_command_keys)->size; |
679 | ||
680 | if (this_command_key_count >= size) | |
284f4730 | 681 | { |
9b8eb840 | 682 | Lisp_Object new_keys; |
6569cc8d | 683 | |
9b8eb840 | 684 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
685 | bcopy (XVECTOR (this_command_keys)->contents, |
686 | XVECTOR (new_keys)->contents, | |
8f805655 | 687 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
688 | |
689 | this_command_keys = new_keys; | |
284f4730 | 690 | } |
6569cc8d JB |
691 | |
692 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
693 | } |
694 | \f | |
695 | Lisp_Object | |
696 | recursive_edit_1 () | |
697 | { | |
698 | int count = specpdl_ptr - specpdl; | |
699 | Lisp_Object val; | |
700 | ||
701 | if (command_loop_level > 0) | |
702 | { | |
703 | specbind (Qstandard_output, Qt); | |
704 | specbind (Qstandard_input, Qt); | |
705 | } | |
706 | ||
707 | val = command_loop (); | |
708 | if (EQ (val, Qt)) | |
709 | Fsignal (Qquit, Qnil); | |
710 | ||
cb5df6ae | 711 | return unbind_to (count, Qnil); |
284f4730 JB |
712 | } |
713 | ||
714 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 715 | |
284f4730 JB |
716 | record_auto_save () |
717 | { | |
51172b6d | 718 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 719 | } |
5846638c RS |
720 | |
721 | /* Make an auto save happen as soon as possible at command level. */ | |
722 | ||
723 | force_auto_save_soon () | |
724 | { | |
725 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
726 | |
727 | record_asynch_buffer_change (); | |
5846638c | 728 | } |
284f4730 | 729 | \f |
284f4730 JB |
730 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
731 | "Invoke the editor command loop recursively.\n\ | |
732 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
733 | that tells this function to return.\n\ | |
734 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
735 | This function is called by the editor initialization to begin editing.") | |
736 | () | |
737 | { | |
738 | int count = specpdl_ptr - specpdl; | |
739 | Lisp_Object val; | |
740 | ||
741 | command_loop_level++; | |
742 | update_mode_lines = 1; | |
743 | ||
744 | record_unwind_protect (recursive_edit_unwind, | |
745 | (command_loop_level | |
746 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
747 | ? Fcurrent_buffer () | |
748 | : Qnil); | |
749 | recursive_edit_1 (); | |
750 | return unbind_to (count, Qnil); | |
751 | } | |
752 | ||
753 | Lisp_Object | |
754 | recursive_edit_unwind (buffer) | |
755 | Lisp_Object buffer; | |
756 | { | |
757 | if (!NILP (buffer)) | |
758 | Fset_buffer (buffer); | |
759 | ||
760 | command_loop_level--; | |
761 | update_mode_lines = 1; | |
762 | return Qnil; | |
763 | } | |
764 | \f | |
765 | Lisp_Object | |
766 | cmd_error (data) | |
767 | Lisp_Object data; | |
a1341f75 RS |
768 | { |
769 | Vstandard_output = Qt; | |
770 | Vstandard_input = Qt; | |
771 | Vexecuting_macro = Qnil; | |
772 | cmd_error_internal (data, 0); | |
773 | ||
774 | Vquit_flag = Qnil; | |
775 | ||
776 | Vinhibit_quit = Qnil; | |
777 | ||
778 | return make_number (0); | |
779 | } | |
780 | ||
781 | cmd_error_internal (data, context) | |
782 | Lisp_Object data; | |
783 | char *context; | |
284f4730 JB |
784 | { |
785 | Lisp_Object errmsg, tail, errname, file_error; | |
786 | Lisp_Object stream; | |
787 | struct gcpro gcpro1; | |
788 | int i; | |
789 | ||
790 | Vquit_flag = Qnil; | |
791 | Vinhibit_quit = Qt; | |
284f4730 JB |
792 | echo_area_glyphs = 0; |
793 | ||
ff11dfa1 | 794 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
795 | yet, or we're not interactive, it's best to dump this message out |
796 | to stderr and exit. */ | |
ff11dfa1 | 797 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
798 | || noninteractive) |
799 | stream = Qexternal_debugging_output; | |
800 | else | |
801 | { | |
802 | Fdiscard_input (); | |
803 | bitch_at_user (); | |
804 | stream = Qt; | |
805 | } | |
806 | ||
a1341f75 RS |
807 | if (context != 0) |
808 | write_string_1 (context, -1, stream); | |
809 | ||
284f4730 JB |
810 | errname = Fcar (data); |
811 | ||
812 | if (EQ (errname, Qerror)) | |
813 | { | |
814 | data = Fcdr (data); | |
815 | if (!CONSP (data)) data = Qnil; | |
816 | errmsg = Fcar (data); | |
817 | file_error = Qnil; | |
818 | } | |
819 | else | |
820 | { | |
821 | errmsg = Fget (errname, Qerror_message); | |
822 | file_error = Fmemq (Qfile_error, | |
823 | Fget (errname, Qerror_conditions)); | |
824 | } | |
825 | ||
826 | /* Print an error message including the data items. | |
827 | This is done by printing it into a scratch buffer | |
828 | and then making a copy of the text in the buffer. */ | |
829 | ||
830 | if (!CONSP (data)) data = Qnil; | |
831 | tail = Fcdr (data); | |
832 | GCPRO1 (tail); | |
833 | ||
834 | /* For file-error, make error message by concatenating | |
835 | all the data items. They are all strings. */ | |
836 | if (!NILP (file_error) && !NILP (tail)) | |
837 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
838 | ||
8c18cbfb | 839 | if (STRINGP (errmsg)) |
284f4730 JB |
840 | Fprinc (errmsg, stream); |
841 | else | |
842 | write_string_1 ("peculiar error", -1, stream); | |
843 | ||
844 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
845 | { | |
846 | write_string_1 (i ? ", " : ": ", 2, stream); | |
847 | if (!NILP (file_error)) | |
848 | Fprinc (Fcar (tail), stream); | |
849 | else | |
850 | Fprin1 (Fcar (tail), stream); | |
851 | } | |
852 | UNGCPRO; | |
853 | ||
ff11dfa1 | 854 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 855 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 856 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
857 | || noninteractive) |
858 | { | |
859 | Fterpri (stream); | |
860 | Fkill_emacs (make_number (-1)); | |
861 | } | |
284f4730 JB |
862 | } |
863 | \f | |
864 | Lisp_Object command_loop_1 (); | |
865 | Lisp_Object command_loop_2 (); | |
866 | Lisp_Object top_level_1 (); | |
867 | ||
868 | /* Entry to editor-command-loop. | |
869 | This level has the catches for exiting/returning to editor command loop. | |
870 | It returns nil to exit recursive edit, t to abort it. */ | |
871 | ||
872 | Lisp_Object | |
873 | command_loop () | |
874 | { | |
875 | if (command_loop_level > 0 || minibuf_level > 0) | |
876 | { | |
877 | return internal_catch (Qexit, command_loop_2, Qnil); | |
878 | } | |
879 | else | |
880 | while (1) | |
881 | { | |
882 | internal_catch (Qtop_level, top_level_1, Qnil); | |
883 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
884 | ||
885 | /* End of file in -batch run causes exit here. */ | |
886 | if (noninteractive) | |
887 | Fkill_emacs (Qt); | |
888 | } | |
889 | } | |
890 | ||
891 | /* Here we catch errors in execution of commands within the | |
892 | editing loop, and reenter the editing loop. | |
893 | When there is an error, cmd_error runs and returns a non-nil | |
894 | value to us. A value of nil means that cmd_loop_1 itself | |
895 | returned due to end of file (or end of kbd macro). */ | |
896 | ||
897 | Lisp_Object | |
898 | command_loop_2 () | |
899 | { | |
900 | register Lisp_Object val; | |
901 | ||
902 | do | |
903 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
904 | while (!NILP (val)); | |
905 | ||
906 | return Qnil; | |
907 | } | |
908 | ||
909 | Lisp_Object | |
910 | top_level_2 () | |
911 | { | |
912 | return Feval (Vtop_level); | |
913 | } | |
914 | ||
915 | Lisp_Object | |
916 | top_level_1 () | |
917 | { | |
918 | /* On entry to the outer level, run the startup file */ | |
919 | if (!NILP (Vtop_level)) | |
920 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
921 | else if (!NILP (Vpurify_flag)) | |
922 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
923 | else | |
924 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
925 | return Qnil; | |
926 | } | |
927 | ||
928 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
929 | "Exit all recursive editing levels.") | |
930 | () | |
931 | { | |
932 | Fthrow (Qtop_level, Qnil); | |
933 | } | |
934 | ||
935 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
936 | "Exit from the innermost recursive edit or minibuffer.") | |
937 | () | |
938 | { | |
939 | if (command_loop_level > 0 || minibuf_level > 0) | |
940 | Fthrow (Qexit, Qnil); | |
941 | ||
942 | error ("No recursive edit is in progress"); | |
943 | } | |
944 | ||
945 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
946 | "Abort the command that requested this recursive edit or minibuffer input.") | |
947 | () | |
948 | { | |
949 | if (command_loop_level > 0 || minibuf_level > 0) | |
950 | Fthrow (Qexit, Qt); | |
951 | ||
952 | error ("No recursive edit is in progress"); | |
953 | } | |
954 | \f | |
955 | /* This is the actual command reading loop, | |
956 | sans error-handling encapsulation. */ | |
957 | ||
958 | Lisp_Object Fcommand_execute (); | |
959 | static int read_key_sequence (); | |
1c9784c9 | 960 | static void safe_run_hooks (); |
284f4730 JB |
961 | |
962 | Lisp_Object | |
963 | command_loop_1 () | |
964 | { | |
48e416d4 | 965 | Lisp_Object cmd, tem; |
284f4730 JB |
966 | int lose; |
967 | int nonundocount; | |
968 | Lisp_Object keybuf[30]; | |
969 | int i; | |
970 | int no_redisplay; | |
971 | int no_direct; | |
86e5706b RS |
972 | int prev_modiff; |
973 | struct buffer *prev_buffer; | |
284f4730 JB |
974 | |
975 | Vprefix_arg = Qnil; | |
86e5706b | 976 | Vdeactivate_mark = Qnil; |
284f4730 JB |
977 | waiting_for_input = 0; |
978 | cancel_echoing (); | |
979 | ||
284f4730 JB |
980 | nonundocount = 0; |
981 | no_redisplay = 0; | |
982 | this_command_key_count = 0; | |
983 | ||
a612e298 RS |
984 | /* Make sure this hook runs after commands that get errors and |
985 | throw to top level. */ | |
a98ea3f9 RS |
986 | /* Note that the value cell will never directly contain nil |
987 | if the symbol is a local variable. */ | |
988 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
989 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 990 | |
8a792f3a RS |
991 | if (!NILP (Vdeferred_action_list)) |
992 | call0 (Vdeferred_action_function); | |
993 | ||
51d5a2c9 RS |
994 | /* Do this after running Vpost_command_hook, for consistency. */ |
995 | last_command = this_command; | |
996 | ||
284f4730 JB |
997 | while (1) |
998 | { | |
999 | /* Install chars successfully executed in kbd macro. */ | |
1000 | ||
1001 | if (defining_kbd_macro && NILP (Vprefix_arg)) | |
1002 | finalize_kbd_macro_chars (); | |
1003 | ||
1004 | /* Make sure the current window's buffer is selected. */ | |
1005 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1006 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1007 | ||
1008 | /* Display any malloc warning that just came out. Use while because | |
1009 | displaying one warning can cause another. */ | |
1010 | ||
1011 | while (pending_malloc_warning) | |
1012 | display_malloc_warning (); | |
1013 | ||
1014 | no_direct = 0; | |
1015 | ||
86e5706b RS |
1016 | Vdeactivate_mark = Qnil; |
1017 | ||
284f4730 | 1018 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1019 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1020 | |
1021 | if (minibuf_level && echo_area_glyphs) | |
1022 | { | |
f1bed6d8 RS |
1023 | /* Bind inhibit-quit to t so that C-g gets read in |
1024 | rather than quitting back to the minibuffer. */ | |
1025 | int count = specpdl_ptr - specpdl; | |
1026 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1027 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1028 | unbind_to (count, Qnil); |
f1bed6d8 | 1029 | |
284f4730 JB |
1030 | echo_area_glyphs = 0; |
1031 | no_direct = 1; | |
1032 | if (!NILP (Vquit_flag)) | |
1033 | { | |
1034 | Vquit_flag = Qnil; | |
24597608 | 1035 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1036 | } |
1037 | } | |
1038 | ||
1039 | #ifdef C_ALLOCA | |
1040 | alloca (0); /* Cause a garbage collection now */ | |
1041 | /* Since we can free the most stuff here. */ | |
1042 | #endif /* C_ALLOCA */ | |
1043 | ||
8f805655 | 1044 | #if 0 |
ff11dfa1 | 1045 | #ifdef MULTI_FRAME |
8f805655 JB |
1046 | /* Select the frame that the last event came from. Usually, |
1047 | switch-frame events will take care of this, but if some lisp | |
1048 | code swallows a switch-frame event, we'll fix things up here. | |
1049 | Is this a good idea? */ | |
8c18cbfb | 1050 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1051 | && XFRAME (internal_last_event_frame) != selected_frame) |
1052 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1053 | #endif |
284f4730 | 1054 | #endif |
48e416d4 RS |
1055 | /* If it has changed current-menubar from previous value, |
1056 | really recompute the menubar from the value. */ | |
a646e520 RS |
1057 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1058 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1059 | call0 (Qrecompute_lucid_menubar); |
1060 | ||
8f805655 | 1061 | /* Read next key sequence; i gets its length. */ |
84d91fda | 1062 | i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), Qnil); |
8f805655 JB |
1063 | |
1064 | ++num_input_keys; | |
1065 | ||
284f4730 JB |
1066 | /* Now we have read a key sequence of length I, |
1067 | or else I is 0 and we found end of file. */ | |
1068 | ||
1069 | if (i == 0) /* End of file -- happens only in */ | |
1070 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1071 | /* -1 means read_key_sequence got a menu that was rejected. |
1072 | Just loop around and read another command. */ | |
1073 | if (i == -1) | |
1074 | { | |
1075 | cancel_echoing (); | |
1076 | this_command_key_count = 0; | |
1077 | continue; | |
1078 | } | |
284f4730 | 1079 | |
284f4730 JB |
1080 | last_command_char = keybuf[i - 1]; |
1081 | ||
75c0b143 RS |
1082 | /* If the previous command tried to force a specific window-start, |
1083 | forget about that, in case this command moves point far away | |
1084 | from that position. */ | |
1085 | XWINDOW (selected_window)->force_start = Qnil; | |
1086 | ||
284f4730 JB |
1087 | cmd = read_key_sequence_cmd; |
1088 | if (!NILP (Vexecuting_macro)) | |
1089 | { | |
1090 | if (!NILP (Vquit_flag)) | |
1091 | { | |
1092 | Vexecuting_macro = Qt; | |
1093 | QUIT; /* Make some noise. */ | |
1094 | /* Will return since macro now empty. */ | |
1095 | } | |
1096 | } | |
1097 | ||
1098 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1099 | cases identified below that set no_redisplay to 1. |
1100 | (actually, there's currently no way to prevent the redisplay, | |
1101 | and no_redisplay is ignored. | |
1102 | Perhaps someday we will really implement it. */ | |
284f4730 JB |
1103 | no_redisplay = 0; |
1104 | ||
86e5706b RS |
1105 | prev_buffer = current_buffer; |
1106 | prev_modiff = MODIFF; | |
8746da95 | 1107 | last_point_position = PT; |
18cd2eeb | 1108 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1109 | |
284f4730 JB |
1110 | /* Execute the command. */ |
1111 | ||
86e5706b | 1112 | this_command = cmd; |
a98ea3f9 RS |
1113 | /* Note that the value cell will never directly contain nil |
1114 | if the symbol is a local variable. */ | |
1115 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1116 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1117 | |
258bf746 | 1118 | if (NILP (this_command)) |
284f4730 JB |
1119 | { |
1120 | /* nil means key is undefined. */ | |
1121 | bitch_at_user (); | |
1122 | defining_kbd_macro = 0; | |
1123 | update_mode_lines = 1; | |
1124 | Vprefix_arg = Qnil; | |
86e5706b | 1125 | |
284f4730 JB |
1126 | } |
1127 | else | |
1128 | { | |
284f4730 JB |
1129 | if (NILP (Vprefix_arg) && ! no_direct) |
1130 | { | |
1131 | /* Recognize some common commands in common situations and | |
1132 | do them directly. */ | |
8001d352 | 1133 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1134 | { |
1135 | struct Lisp_Vector *dp | |
1136 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1137 | lose = FETCH_CHAR (PT); |
1138 | SET_PT (PT + 1); | |
0f7a8fee | 1139 | if ((dp |
82ba47d7 | 1140 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1141 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1142 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1143 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1144 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1145 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1146 | >= MODIFF) | |
1147 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1148 | == PT - 1) |
284f4730 JB |
1149 | && !windows_or_buffers_changed |
1150 | && EQ (current_buffer->selective_display, Qnil) | |
1151 | && !detect_input_pending () | |
1152 | && NILP (Vexecuting_macro)) | |
1153 | no_redisplay = direct_output_forward_char (1); | |
1154 | goto directly_done; | |
1155 | } | |
8001d352 | 1156 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1157 | { |
1158 | struct Lisp_Vector *dp | |
1159 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1160 | SET_PT (PT - 1); |
1161 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1162 | if ((dp |
ca873d73 | 1163 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1164 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1165 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1166 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1167 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1168 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1169 | >= MODIFF) | |
1170 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1171 | == PT + 1) |
284f4730 JB |
1172 | && !windows_or_buffers_changed |
1173 | && EQ (current_buffer->selective_display, Qnil) | |
1174 | && !detect_input_pending () | |
1175 | && NILP (Vexecuting_macro)) | |
1176 | no_redisplay = direct_output_forward_char (-1); | |
1177 | goto directly_done; | |
1178 | } | |
258bf746 | 1179 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1180 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1181 | && INTEGERP (last_command_char)) |
284f4730 JB |
1182 | { |
1183 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1184 | int value; |
284f4730 | 1185 | |
fc9cce4e RS |
1186 | if (NILP (Vexecuting_macro) |
1187 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1188 | { |
1189 | if (!nonundocount || nonundocount >= 20) | |
1190 | { | |
1191 | Fundo_boundary (); | |
1192 | nonundocount = 0; | |
1193 | } | |
1194 | nonundocount++; | |
1195 | } | |
fc9cce4e RS |
1196 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1197 | < MODIFF) | |
1198 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1199 | != PT) | |
1200 | || MODIFF <= current_buffer->save_modified | |
1201 | || windows_or_buffers_changed | |
1202 | || !EQ (current_buffer->selective_display, Qnil) | |
1203 | || detect_input_pending () | |
1204 | || !NILP (Vexecuting_macro)); | |
1205 | value = internal_self_insert (c, 0); | |
1206 | if (value) | |
1207 | lose = 1; | |
1208 | if (value == 2) | |
1209 | nonundocount = 0; | |
1210 | ||
1211 | if (!lose | |
1212 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1213 | { |
1214 | struct Lisp_Vector *dp | |
1215 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1216 | int lose = c; |
284f4730 | 1217 | |
0f7a8fee JB |
1218 | if (dp) |
1219 | { | |
9b8eb840 | 1220 | Lisp_Object obj; |
0f7a8fee | 1221 | |
9b8eb840 | 1222 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1223 | if (NILP (obj)) |
8e91f441 RS |
1224 | { |
1225 | /* Do it only for char codes | |
1226 | that by default display as themselves. */ | |
1227 | if (lose >= 0x20 && lose <= 0x7e) | |
1228 | no_redisplay = direct_output_for_insert (lose); | |
1229 | } | |
8c18cbfb | 1230 | else if (VECTORP (obj) |
054c8675 | 1231 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1232 | && (obj = XVECTOR (obj)->contents[0], |
1233 | INTEGERP (obj)) | |
054c8675 RS |
1234 | /* Insist face not specified in glyph. */ |
1235 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1236 | no_redisplay |
1237 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1238 | } |
1239 | else | |
1240 | { | |
1241 | if (lose >= 0x20 && lose <= 0x7e) | |
1242 | no_redisplay = direct_output_for_insert (lose); | |
1243 | } | |
284f4730 JB |
1244 | } |
1245 | goto directly_done; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | /* Here for a command that isn't executed directly */ | |
1250 | ||
1251 | nonundocount = 0; | |
1252 | if (NILP (Vprefix_arg)) | |
1253 | Fundo_boundary (); | |
258bf746 | 1254 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1255 | |
284f4730 | 1256 | } |
a764a753 | 1257 | directly_done: ; |
284f4730 | 1258 | |
a98ea3f9 RS |
1259 | /* Note that the value cell will never directly contain nil |
1260 | if the symbol is a local variable. */ | |
1261 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1262 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1263 | |
8a792f3a | 1264 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1265 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1266 | |
284f4730 JB |
1267 | /* If there is a prefix argument, |
1268 | 1) We don't want last_command to be ``universal-argument'' | |
1269 | (that would be dumb), so don't set last_command, | |
1270 | 2) we want to leave echoing on so that the prefix will be | |
1271 | echoed as part of this key sequence, so don't call | |
1272 | cancel_echoing, and | |
1273 | 3) we want to leave this_command_key_count non-zero, so that | |
1274 | read_char will realize that it is re-reading a character, and | |
1275 | not echo it a second time. */ | |
1276 | if (NILP (Vprefix_arg)) | |
1277 | { | |
1278 | last_command = this_command; | |
1279 | cancel_echoing (); | |
1280 | this_command_key_count = 0; | |
1281 | } | |
86e5706b | 1282 | |
88ce066e | 1283 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1284 | { |
1285 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1286 | { | |
1287 | current_buffer->mark_active = Qnil; | |
1288 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1289 | } | |
1290 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1291 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1292 | } | |
284f4730 JB |
1293 | } |
1294 | } | |
1c9784c9 KH |
1295 | |
1296 | /* If we get an error while running the hook, cause the hook variable | |
1297 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1298 | to mysteriously evaporate. */ | |
1299 | static void | |
1300 | safe_run_hooks (hook) | |
a98ea3f9 | 1301 | Lisp_Object hook; |
1c9784c9 | 1302 | { |
68553292 | 1303 | Lisp_Object value; |
1c9784c9 KH |
1304 | int count = specpdl_ptr - specpdl; |
1305 | specbind (Qinhibit_quit, Qt); | |
1306 | ||
a98ea3f9 RS |
1307 | /* We read and set the variable with functions, |
1308 | in case it's buffer-local. */ | |
68553292 | 1309 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1310 | Fset (hook, Qnil); |
1c9784c9 | 1311 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1312 | Fset (hook, value); |
1c9784c9 KH |
1313 | |
1314 | unbind_to (count, Qnil); | |
1315 | } | |
284f4730 JB |
1316 | \f |
1317 | /* Number of seconds between polling for input. */ | |
1318 | int polling_period; | |
1319 | ||
eb8c3be9 | 1320 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1321 | int poll_suppress_count; |
1322 | ||
36922b18 | 1323 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1324 | int polling_for_input; |
1325 | ||
36922b18 RS |
1326 | #ifdef POLL_FOR_INPUT |
1327 | ||
284f4730 JB |
1328 | /* Handle an alarm once each second and read pending input |
1329 | so as to handle a C-g if it comces in. */ | |
1330 | ||
1331 | SIGTYPE | |
1332 | input_poll_signal () | |
1333 | { | |
9ac0d9e0 JB |
1334 | if (interrupt_input_blocked == 0 |
1335 | && !waiting_for_input) | |
1336 | read_avail_input (0); | |
284f4730 JB |
1337 | signal (SIGALRM, input_poll_signal); |
1338 | alarm (polling_period); | |
1339 | } | |
1340 | ||
1341 | #endif | |
1342 | ||
1343 | /* Begin signals to poll for input, if they are appropriate. | |
1344 | This function is called unconditionally from various places. */ | |
1345 | ||
1346 | start_polling () | |
1347 | { | |
1348 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1349 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1350 | { |
1351 | poll_suppress_count--; | |
1352 | if (poll_suppress_count == 0) | |
1353 | { | |
1354 | signal (SIGALRM, input_poll_signal); | |
1355 | polling_for_input = 1; | |
1356 | alarm (polling_period); | |
1357 | } | |
1358 | } | |
1359 | #endif | |
1360 | } | |
1361 | ||
1d3195db RS |
1362 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1363 | ||
1364 | int | |
1365 | input_polling_used () | |
1366 | { | |
1367 | #ifdef POLL_FOR_INPUT | |
1368 | return read_socket_hook && !interrupt_input; | |
1369 | #else | |
1370 | return 0; | |
1371 | #endif | |
1372 | } | |
1373 | ||
284f4730 JB |
1374 | /* Turn off polling. */ |
1375 | ||
1376 | stop_polling () | |
1377 | { | |
1378 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1379 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1380 | { |
1381 | if (poll_suppress_count == 0) | |
1382 | { | |
1383 | polling_for_input = 0; | |
1384 | alarm (0); | |
1385 | } | |
1386 | poll_suppress_count++; | |
1387 | } | |
1388 | #endif | |
1389 | } | |
fe8aeef3 RS |
1390 | |
1391 | /* Set the value of poll_suppress_count to COUNT | |
1392 | and start or stop polling accordingly. */ | |
1393 | ||
1394 | void | |
1395 | set_poll_suppress_count (count) | |
1396 | int count; | |
1397 | { | |
1398 | #ifdef POLL_FOR_INPUT | |
1399 | if (count == 0 && poll_suppress_count != 0) | |
1400 | { | |
1401 | poll_suppress_count = 1; | |
1402 | start_polling (); | |
1403 | } | |
1404 | else if (count != 0 && poll_suppress_count == 0) | |
1405 | { | |
1406 | stop_polling (); | |
1407 | } | |
1408 | poll_suppress_count = count; | |
1409 | #endif | |
1410 | } | |
f4eef8b4 | 1411 | |
d0a57728 RS |
1412 | /* Bind polling_period to a value at least N. |
1413 | But don't decrease it. */ | |
1414 | ||
f4eef8b4 RS |
1415 | bind_polling_period (n) |
1416 | int n; | |
1417 | { | |
1418 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1419 | int new = polling_period; |
1420 | ||
1421 | if (n > new) | |
1422 | new = n; | |
1423 | ||
f4eef8b4 | 1424 | stop_polling (); |
d0a57728 RS |
1425 | specbind (Qpolling_period, make_number (new)); |
1426 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1427 | start_polling (); |
1428 | #endif | |
1429 | } | |
284f4730 | 1430 | \f |
faf5e407 JB |
1431 | /* Applying the control modifier to CHARACTER. */ |
1432 | int | |
1433 | make_ctrl_char (c) | |
1434 | int c; | |
1435 | { | |
d205953b JB |
1436 | /* Save the upper bits here. */ |
1437 | int upper = c & ~0177; | |
1438 | ||
1439 | c &= 0177; | |
1440 | ||
1441 | /* Everything in the columns containing the upper-case letters | |
1442 | denotes a control character. */ | |
1443 | if (c >= 0100 && c < 0140) | |
1444 | { | |
1445 | int oc = c; | |
1446 | c &= ~0140; | |
1447 | /* Set the shift modifier for a control char | |
1448 | made from a shifted letter. But only for letters! */ | |
1449 | if (oc >= 'A' && oc <= 'Z') | |
1450 | c |= shift_modifier; | |
1451 | } | |
1452 | ||
1453 | /* The lower-case letters denote control characters too. */ | |
1454 | else if (c >= 'a' && c <= 'z') | |
1455 | c &= ~0140; | |
1456 | ||
1457 | /* Include the bits for control and shift | |
1458 | only if the basic ASCII code can't indicate them. */ | |
1459 | else if (c >= ' ') | |
1460 | c |= ctrl_modifier; | |
1461 | ||
1462 | /* Replace the high bits. */ | |
1463 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1464 | |
1465 | return c; | |
1466 | } | |
1467 | ||
1468 | ||
1469 | \f | |
284f4730 JB |
1470 | /* Input of single characters from keyboard */ |
1471 | ||
1472 | Lisp_Object print_help (); | |
1473 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1474 | static void record_char (); |
284f4730 JB |
1475 | |
1476 | /* read a character from the keyboard; call the redisplay if needed */ | |
1477 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1478 | -1 means do not do redisplay, but do do autosaving. | |
1479 | 1 means do both. */ | |
1480 | ||
7d6de002 RS |
1481 | /* The arguments MAPS and NMAPS are for menu prompting. |
1482 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1483 | ||
1484 | PREV_EVENT is the previous input event, or nil if we are reading | |
1485 | the first event of a key sequence. | |
1486 | ||
6569cc8d JB |
1487 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1488 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1489 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1490 | ||
1491 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1492 | |
284f4730 | 1493 | Lisp_Object |
7d6de002 | 1494 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1495 | int commandflag; |
7d6de002 RS |
1496 | int nmaps; |
1497 | Lisp_Object *maps; | |
1498 | Lisp_Object prev_event; | |
1499 | int *used_mouse_menu; | |
284f4730 JB |
1500 | { |
1501 | register Lisp_Object c; | |
1502 | int count; | |
1503 | jmp_buf save_jump; | |
a1341f75 | 1504 | int key_already_recorded = 0; |
e4fe371d RS |
1505 | Lisp_Object also_record; |
1506 | also_record = Qnil; | |
284f4730 | 1507 | |
24597608 | 1508 | if (CONSP (Vunread_command_events)) |
284f4730 | 1509 | { |
24597608 RS |
1510 | c = XCONS (Vunread_command_events)->car; |
1511 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1512 | |
284f4730 JB |
1513 | if (this_command_key_count == 0) |
1514 | goto reread_first; | |
1515 | else | |
1516 | goto reread; | |
1517 | } | |
1518 | ||
86e5706b RS |
1519 | if (unread_command_char != -1) |
1520 | { | |
18cd2eeb | 1521 | XSETINT (c, unread_command_char); |
86e5706b RS |
1522 | unread_command_char = -1; |
1523 | ||
1524 | if (this_command_key_count == 0) | |
1525 | goto reread_first; | |
1526 | else | |
1527 | goto reread; | |
1528 | } | |
1529 | ||
284f4730 JB |
1530 | if (!NILP (Vexecuting_macro)) |
1531 | { | |
07d2b8de | 1532 | #ifdef MULTI_FRAME |
fce33686 JB |
1533 | /* We set this to Qmacro; since that's not a frame, nobody will |
1534 | try to switch frames on us, and the selected window will | |
1535 | remain unchanged. | |
1536 | ||
1537 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1538 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1539 | real event came from. Normally, a switch-frame event selects |
1540 | internal_last_event_frame after each command is read, but | |
1541 | events read from a macro should never cause a new frame to be | |
1542 | selected. */ | |
1543 | Vlast_event_frame = internal_last_event_frame = Qmacro; | |
07d2b8de | 1544 | #endif |
fce33686 | 1545 | |
663258f2 JB |
1546 | /* Exit the macro if we are at the end. |
1547 | Also, some things replace the macro with t | |
1548 | to force an early exit. */ | |
1549 | if (EQ (Vexecuting_macro, Qt) | |
1550 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1551 | { |
18cd2eeb | 1552 | XSETINT (c, -1); |
284f4730 JB |
1553 | return c; |
1554 | } | |
1555 | ||
1556 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
8c18cbfb | 1557 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1558 | && (XINT (c) & 0x80)) |
bb9e9bed | 1559 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1560 | |
284f4730 JB |
1561 | executing_macro_index++; |
1562 | ||
1563 | goto from_macro; | |
1564 | } | |
1565 | ||
cd21b839 JB |
1566 | if (!NILP (unread_switch_frame)) |
1567 | { | |
1568 | c = unread_switch_frame; | |
1569 | unread_switch_frame = Qnil; | |
1570 | ||
1571 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1572 | again, so we go to reread_first, rather than reread. */ |
1573 | goto reread_first; | |
cd21b839 JB |
1574 | } |
1575 | ||
3f9929bf RS |
1576 | /* Don't bother updating menu bars while doing mouse tracking. |
1577 | We get events very rapidly then, and the menu bar won't be changing. | |
1578 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1579 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1580 | prepare_menu_bars (); |
1581 | ||
284f4730 | 1582 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1583 | save_getcjmp (save_jump); |
284f4730 JB |
1584 | |
1585 | stop_polling (); | |
1586 | ||
1587 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1588 | redisplay (); | |
1589 | ||
1590 | if (_setjmp (getcjmp)) | |
1591 | { | |
18cd2eeb | 1592 | XSETINT (c, quit_char); |
07d2b8de | 1593 | #ifdef MULTI_FRAME |
18cd2eeb | 1594 | XSETFRAME (internal_last_event_frame, selected_frame); |
3c370943 | 1595 | Vlast_event_frame = internal_last_event_frame; |
07d2b8de | 1596 | #endif |
04904c29 RS |
1597 | /* If we report the quit char as an event, |
1598 | don't do so more than once. */ | |
1599 | if (!NILP (Vinhibit_quit)) | |
1600 | Vquit_flag = Qnil; | |
284f4730 | 1601 | |
284f4730 JB |
1602 | goto non_reread; |
1603 | } | |
1604 | ||
1605 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1606 | if (echo_area_glyphs && *echo_area_glyphs && echo_area_glyphs != echobuf) | |
1607 | cancel_echoing (); | |
1608 | else | |
1609 | /* If already echoing, continue. */ | |
1610 | echo_dash (); | |
1611 | ||
8150596a RS |
1612 | /* Try reading a character via menu prompting in the minibuf. |
1613 | Try this before the sit-for, because the sit-for | |
1614 | would do the wrong thing if we are supposed to do | |
1615 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1616 | after a mouse event so don't try a minibuf menu. */ | |
1617 | c = Qnil; | |
24597608 RS |
1618 | if (nmaps > 0 && INTERACTIVE |
1619 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1620 | /* Don't bring up a menu if we already have another event. */ | |
1621 | && NILP (Vunread_command_events) | |
1622 | && unread_command_char < 0 | |
b8556aee | 1623 | && !detect_input_pending ()) |
8150596a RS |
1624 | { |
1625 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1626 | if (! NILP (c)) |
a1341f75 RS |
1627 | { |
1628 | key_already_recorded = 1; | |
1629 | goto non_reread; | |
1630 | } | |
8150596a RS |
1631 | } |
1632 | ||
284f4730 JB |
1633 | /* If in middle of key sequence and minibuffer not active, |
1634 | start echoing if enough time elapses. */ | |
1635 | if (minibuf_level == 0 && !immediate_echo && this_command_key_count > 0 | |
27203ead | 1636 | && ! noninteractive |
284f4730 JB |
1637 | && echo_keystrokes > 0 |
1638 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1639 | { | |
1640 | Lisp_Object tem0; | |
1641 | ||
7d6de002 RS |
1642 | /* After a mouse event, start echoing right away. |
1643 | This is because we are probably about to display a menu, | |
1644 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1645 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1646 | echo (); |
7d6de002 RS |
1647 | else |
1648 | { | |
1649 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1650 | if (EQ (tem0, Qt)) | |
1651 | echo (); | |
1652 | } | |
284f4730 JB |
1653 | } |
1654 | ||
1655 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1656 | ||
1657 | if (commandflag != 0 | |
1658 | && auto_save_interval > 0 | |
51172b6d | 1659 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1660 | && !detect_input_pending ()) |
1661 | { | |
1662 | jmp_buf temp; | |
1663 | save_getcjmp (temp); | |
1664 | Fdo_auto_save (Qnil, Qnil); | |
ef8fd672 RS |
1665 | /* Hooks can actually change some buffers in auto save. */ |
1666 | redisplay (); | |
284f4730 JB |
1667 | restore_getcjmp (temp); |
1668 | } | |
1669 | ||
8150596a | 1670 | /* Try reading using an X menu. |
24597608 RS |
1671 | This is never confused with reading using the minibuf |
1672 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1673 | does not pass on any keymaps. */ | |
1674 | if (nmaps > 0 && INTERACTIVE | |
1675 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1676 | /* Don't bring up a menu if we already have another event. */ | |
1677 | && NILP (Vunread_command_events) | |
b8556aee | 1678 | && unread_command_char < 0) |
8150596a | 1679 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1680 | |
284f4730 JB |
1681 | /* Slow down auto saves logarithmically in size of current buffer, |
1682 | and garbage collect while we're at it. */ | |
26c1639e | 1683 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1684 | { |
1685 | int delay_level, buffer_size; | |
1686 | ||
1687 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1688 | last_non_minibuf_size = Z - BEG; | |
1689 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1690 | delay_level = 0; | |
1691 | while (buffer_size > 64) | |
1692 | delay_level++, buffer_size -= buffer_size >> 2; | |
1693 | if (delay_level < 4) delay_level = 4; | |
1694 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1695 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1696 | ||
1697 | /* Auto save if enough time goes by without input. */ | |
1698 | if (commandflag != 0 | |
51172b6d | 1699 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1700 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1701 | && XINT (Vauto_save_timeout) > 0) |
1702 | { | |
1703 | Lisp_Object tem0; | |
1704 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1705 | tem0 = sit_for (delay, 0, 1, 1); | |
1706 | if (EQ (tem0, Qt)) | |
1707 | { | |
1708 | jmp_buf temp; | |
1709 | save_getcjmp (temp); | |
1710 | Fdo_auto_save (Qnil, Qnil); | |
1711 | restore_getcjmp (temp); | |
1712 | ||
1713 | /* If we have auto-saved and there is still no input | |
1714 | available, garbage collect if there has been enough | |
1715 | consing going on to make it worthwhile. */ | |
1716 | if (!detect_input_pending () | |
1717 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 RS |
1718 | Fgarbage_collect (); |
1719 | /* prepare_menu_bars isn't safe here, but it should | |
1720 | also be unnecessary. */ | |
1721 | redisplay (); | |
7d6de002 RS |
1722 | } |
1723 | } | |
1724 | } | |
284f4730 JB |
1725 | |
1726 | /* Actually read a character, waiting if necessary. */ | |
4eb4f926 | 1727 | while (NILP (c)) |
1e12dd87 RS |
1728 | { |
1729 | c = kbd_buffer_get_event (); | |
1730 | if (!NILP (c)) | |
1731 | break; | |
1732 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
cd72760c RS |
1733 | { |
1734 | prepare_menu_bars (); | |
1735 | redisplay (); | |
1736 | } | |
1e12dd87 | 1737 | } |
284f4730 | 1738 | |
284f4730 | 1739 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1740 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1741 | Fkill_emacs (make_number (1)); |
1742 | ||
8c18cbfb | 1743 | if (INTEGERP (c)) |
80645119 JB |
1744 | { |
1745 | /* Add in any extra modifiers, where appropriate. */ | |
1746 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1747 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1748 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1749 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1750 | |
1751 | /* Transfer any other modifier bits directly from | |
1752 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1753 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1754 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1755 | } |
9fa4395d | 1756 | |
284f4730 JB |
1757 | non_reread: |
1758 | ||
f76475ad | 1759 | restore_getcjmp (save_jump); |
284f4730 JB |
1760 | |
1761 | start_polling (); | |
1762 | ||
dfd11da7 RS |
1763 | /* Buffer switch events are only for internal wakeups |
1764 | so don't show them to the user. */ | |
8c18cbfb | 1765 | if (BUFFERP (c)) |
dfd11da7 RS |
1766 | return c; |
1767 | ||
a1341f75 RS |
1768 | if (key_already_recorded) |
1769 | return c; | |
1770 | ||
dfd11da7 RS |
1771 | /* Wipe the echo area. */ |
1772 | echo_area_glyphs = 0; | |
284f4730 JB |
1773 | |
1774 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1775 | if (INTEGERP (c)) |
284f4730 JB |
1776 | { |
1777 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1778 | if (XINT (c) == -1) |
284f4730 JB |
1779 | return c; |
1780 | ||
8c18cbfb | 1781 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
1782 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1783 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1784 | } |
1785 | ||
e4fe371d RS |
1786 | /* If this event is a mouse click in the menu bar, |
1787 | return just menu-bar for now. Modify the mouse click event | |
1788 | so we won't do this twice, then queue it up. */ | |
1789 | if (EVENT_HAS_PARAMETERS (c) | |
1790 | && CONSP (XCONS (c)->cdr) | |
1791 | && CONSP (EVENT_START (c)) | |
1792 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 1793 | { |
e4fe371d | 1794 | Lisp_Object posn; |
284f4730 | 1795 | |
e4fe371d RS |
1796 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
1797 | /* Handle menu-bar events: | |
1798 | insert the dummy prefix event `menu-bar'. */ | |
1799 | if (EQ (posn, Qmenu_bar)) | |
1800 | { | |
1801 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
1802 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 1803 | |
e4fe371d RS |
1804 | also_record = c; |
1805 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
1806 | c = posn; | |
284f4730 | 1807 | } |
284f4730 JB |
1808 | } |
1809 | ||
e4fe371d RS |
1810 | record_char (c); |
1811 | if (! NILP (also_record)) | |
1812 | record_char (also_record); | |
51172b6d | 1813 | |
284f4730 JB |
1814 | from_macro: |
1815 | reread_first: | |
284f4730 | 1816 | |
b8556aee | 1817 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
1818 | if (echo_keystrokes |
1819 | && ! (EVENT_HAS_PARAMETERS (c) | |
1820 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
1821 | { |
1822 | echo_char (c); | |
1823 | if (! NILP (also_record)) | |
1824 | echo_char (also_record); | |
1825 | } | |
b8556aee | 1826 | |
db8c1663 | 1827 | /* Record this character as part of the current key. */ |
b8556aee | 1828 | add_command_key (c); |
e4fe371d RS |
1829 | if (! NILP (also_record)) |
1830 | add_command_key (also_record); | |
284f4730 JB |
1831 | |
1832 | /* Re-reading in the middle of a command */ | |
1833 | reread: | |
1834 | last_input_char = c; | |
1835 | num_input_chars++; | |
1836 | ||
1837 | /* Process the help character specially if enabled */ | |
7e85b935 | 1838 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1839 | { |
1840 | Lisp_Object tem0; | |
1841 | count = specpdl_ptr - specpdl; | |
1842 | ||
1843 | record_unwind_protect (Fset_window_configuration, | |
1844 | Fcurrent_window_configuration (Qnil)); | |
1845 | ||
1846 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 1847 | if (STRINGP (tem0)) |
284f4730 JB |
1848 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
1849 | ||
1850 | cancel_echoing (); | |
3cb81011 KH |
1851 | do |
1852 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1853 | while (BUFFERP (c)); |
ff11dfa1 | 1854 | /* Remove the help from the frame */ |
284f4730 | 1855 | unbind_to (count, Qnil); |
e9bf89a0 | 1856 | prepare_menu_bars (); |
284f4730 JB |
1857 | redisplay (); |
1858 | if (EQ (c, make_number (040))) | |
1859 | { | |
1860 | cancel_echoing (); | |
3cb81011 KH |
1861 | do |
1862 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1863 | while (BUFFERP (c)); |
284f4730 JB |
1864 | } |
1865 | } | |
1866 | ||
1867 | return c; | |
1868 | } | |
1869 | ||
e4fe371d RS |
1870 | /* Record the input event C in various ways. */ |
1871 | ||
1872 | static void | |
1873 | record_char (c) | |
1874 | Lisp_Object c; | |
1875 | { | |
1876 | total_keys++; | |
1877 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
1878 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
1879 | recent_keys_index = 0; | |
1880 | ||
1881 | /* Write c to the dribble file. If c is a lispy event, write | |
1882 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1883 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1884 | if (dribble) | |
1885 | { | |
1886 | if (INTEGERP (c)) | |
1887 | { | |
1888 | if (XUINT (c) < 0x100) | |
1889 | putc (XINT (c), dribble); | |
1890 | else | |
1891 | fprintf (dribble, " 0x%x", XUINT (c)); | |
1892 | } | |
1893 | else | |
1894 | { | |
1895 | Lisp_Object dribblee; | |
1896 | ||
1897 | /* If it's a structured event, take the event header. */ | |
1898 | dribblee = EVENT_HEAD (c); | |
1899 | ||
1900 | if (SYMBOLP (dribblee)) | |
1901 | { | |
1902 | putc ('<', dribble); | |
1903 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
1904 | XSYMBOL (dribblee)->name->size, | |
1905 | dribble); | |
1906 | putc ('>', dribble); | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | fflush (dribble); | |
1911 | } | |
1912 | ||
1913 | store_kbd_macro_char (c); | |
1914 | ||
1915 | num_nonmacro_input_chars++; | |
1916 | } | |
1917 | ||
284f4730 JB |
1918 | Lisp_Object |
1919 | print_help (object) | |
1920 | Lisp_Object object; | |
1921 | { | |
622de3e9 | 1922 | struct buffer *old = current_buffer; |
284f4730 | 1923 | Fprinc (object, Qnil); |
622de3e9 KH |
1924 | set_buffer_internal (XBUFFER (Vstandard_output)); |
1925 | call0 (intern ("help-mode")); | |
1926 | set_buffer_internal (old); | |
284f4730 JB |
1927 | return Qnil; |
1928 | } | |
1929 | ||
1930 | /* Copy out or in the info on where C-g should throw to. | |
1931 | This is used when running Lisp code from within get_char, | |
1932 | in case get_char is called recursively. | |
1933 | See read_process_output. */ | |
1934 | ||
1935 | save_getcjmp (temp) | |
1936 | jmp_buf temp; | |
1937 | { | |
1938 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1939 | } | |
1940 | ||
1941 | restore_getcjmp (temp) | |
1942 | jmp_buf temp; | |
1943 | { | |
1944 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1945 | } | |
1946 | ||
1947 | \f | |
2eb6bfbe RM |
1948 | #ifdef HAVE_MOUSE |
1949 | ||
284f4730 JB |
1950 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
1951 | of this function. */ | |
a9d77f1f | 1952 | |
284f4730 JB |
1953 | static Lisp_Object |
1954 | tracking_off (old_value) | |
1955 | Lisp_Object old_value; | |
1956 | { | |
71edead1 RS |
1957 | do_mouse_tracking = old_value; |
1958 | if (NILP (old_value)) | |
284f4730 | 1959 | { |
284f4730 JB |
1960 | /* Redisplay may have been preempted because there was input |
1961 | available, and it assumes it will be called again after the | |
1962 | input has been processed. If the only input available was | |
1963 | the sort that we have just disabled, then we need to call | |
1964 | redisplay. */ | |
1965 | if (!readable_events ()) | |
1966 | { | |
e9bf89a0 | 1967 | prepare_menu_bars (); |
284f4730 JB |
1968 | redisplay_preserve_echo_area (); |
1969 | get_input_pending (&input_pending); | |
1970 | } | |
1971 | } | |
1972 | } | |
1973 | ||
1974 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
1975 | "Evaluate BODY with mouse movement events enabled.\n\ |
1976 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
1977 | you can read with `read-event'.\n\ | |
1978 | Normally, mouse motion is ignored.") | |
284f4730 JB |
1979 | (args) |
1980 | Lisp_Object args; | |
1981 | { | |
1982 | int count = specpdl_ptr - specpdl; | |
1983 | Lisp_Object val; | |
1984 | ||
a9d77f1f | 1985 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 1986 | |
3f9929bf RS |
1987 | if (!input_pending && !detect_input_pending ()) |
1988 | prepare_menu_bars (); | |
1989 | ||
a9d77f1f | 1990 | XSETFRAME (do_mouse_tracking, selected_frame); |
284f4730 JB |
1991 | |
1992 | val = Fprogn (args); | |
1993 | return unbind_to (count, val); | |
1994 | } | |
2eb6bfbe RM |
1995 | |
1996 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
1997 | \f |
1998 | /* Low level keyboard/mouse input. | |
1999 | kbd_buffer_store_event places events in kbd_buffer, and | |
2000 | kbd_buffer_get_event retrieves them. | |
2001 | mouse_moved indicates when the mouse has moved again, and | |
2002 | *mouse_position_hook provides the mouse position. */ | |
2003 | ||
2004 | /* Return true iff there are any events in the queue that read-char | |
2005 | would return. If this returns false, a read-char would block. */ | |
2006 | static int | |
2007 | readable_events () | |
2008 | { | |
2009 | return ! EVENT_QUEUES_EMPTY; | |
2010 | } | |
2011 | ||
2012 | /* Set this for debugging, to have a way to get out */ | |
2013 | int stop_character; | |
284f4730 JB |
2014 | |
2015 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
2016 | ||
2017 | void | |
2018 | kbd_buffer_store_event (event) | |
2019 | register struct input_event *event; | |
2020 | { | |
2021 | if (event->kind == no_event) | |
2022 | abort (); | |
2023 | ||
2024 | if (event->kind == ascii_keystroke) | |
2025 | { | |
e9bf89a0 | 2026 | register int c = event->code & 0377; |
284f4730 | 2027 | |
faf5e407 JB |
2028 | if (event->modifiers & ctrl_modifier) |
2029 | c = make_ctrl_char (c); | |
2030 | ||
9fd7d808 RS |
2031 | c |= (event->modifiers |
2032 | & (meta_modifier | alt_modifier | |
2033 | | hyper_modifier | super_modifier)); | |
2034 | ||
86e5706b | 2035 | if (c == quit_char) |
284f4730 | 2036 | { |
3e51c7b7 JB |
2037 | extern SIGTYPE interrupt_signal (); |
2038 | ||
07d2b8de | 2039 | #ifdef MULTI_FRAME |
284f4730 | 2040 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2041 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2042 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2043 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2044 | { |
9b8eb840 | 2045 | Lisp_Object focus; |
4bb994d1 | 2046 | |
9b8eb840 | 2047 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2048 | if (NILP (focus)) |
3c370943 | 2049 | internal_last_event_frame = event->frame_or_window; |
4bb994d1 | 2050 | else |
3c370943 JB |
2051 | internal_last_event_frame = focus; |
2052 | Vlast_event_frame = internal_last_event_frame; | |
4bb994d1 | 2053 | } |
07d2b8de | 2054 | #endif |
3e51c7b7 | 2055 | |
ffd56f97 | 2056 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2057 | interrupt_signal (); |
2058 | return; | |
2059 | } | |
2060 | ||
2061 | if (c && c == stop_character) | |
2062 | { | |
2063 | sys_suspend (); | |
2064 | return; | |
2065 | } | |
284f4730 JB |
2066 | } |
2067 | ||
2068 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) | |
2069 | kbd_store_ptr = kbd_buffer; | |
2070 | ||
2071 | /* Don't let the very last slot in the buffer become full, | |
2072 | since that would make the two pointers equal, | |
2073 | and that is indistinguishable from an empty buffer. | |
2074 | Discard the event if it would fill the last slot. */ | |
2075 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) | |
2076 | { | |
2077 | kbd_store_ptr->kind = event->kind; | |
27203ead RS |
2078 | if (event->kind == selection_request_event) |
2079 | { | |
2080 | /* We must not use the ordinary copying code for this case, | |
2081 | since `part' is an enum and copying it might not copy enough | |
2082 | in this case. */ | |
2083 | bcopy (event, kbd_store_ptr, sizeof (*event)); | |
2084 | } | |
2085 | else | |
2086 | { | |
2087 | kbd_store_ptr->code = event->code; | |
2088 | kbd_store_ptr->part = event->part; | |
2089 | kbd_store_ptr->frame_or_window = event->frame_or_window; | |
2090 | kbd_store_ptr->modifiers = event->modifiers; | |
2091 | kbd_store_ptr->x = event->x; | |
2092 | kbd_store_ptr->y = event->y; | |
2093 | kbd_store_ptr->timestamp = event->timestamp; | |
2094 | } | |
7b4aedb9 JB |
2095 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2096 | - kbd_buffer] | |
2097 | = event->frame_or_window); | |
284f4730 JB |
2098 | |
2099 | kbd_store_ptr++; | |
2100 | } | |
2101 | } | |
a612e298 RS |
2102 | \f |
2103 | /* Read one event from the event buffer, waiting if necessary. | |
2104 | The value is a Lisp object representing the event. | |
2105 | The value is nil for an event that should be ignored, | |
2106 | or that was handled here. | |
2107 | We always read and discard one event. */ | |
284f4730 JB |
2108 | |
2109 | static Lisp_Object | |
2110 | kbd_buffer_get_event () | |
2111 | { | |
2112 | register int c; | |
2113 | Lisp_Object obj; | |
2114 | ||
2115 | if (noninteractive) | |
2116 | { | |
2117 | c = getchar (); | |
18cd2eeb | 2118 | XSETINT (obj, c); |
284f4730 JB |
2119 | return obj; |
2120 | } | |
2121 | ||
2122 | /* Wait until there is input available. */ | |
2123 | for (;;) | |
2124 | { | |
284f4730 JB |
2125 | if (!EVENT_QUEUES_EMPTY) |
2126 | break; | |
2127 | ||
2128 | /* If the quit flag is set, then read_char will return | |
2129 | quit_char, so that counts as "available input." */ | |
2130 | if (!NILP (Vquit_flag)) | |
2131 | quit_throw_to_read_char (); | |
2132 | ||
2133 | /* One way or another, wait until input is available; then, if | |
2134 | interrupt handlers have not read it, read it now. */ | |
2135 | ||
2136 | #ifdef OLDVMS | |
2137 | wait_for_kbd_input (); | |
2138 | #else | |
2139 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2140 | #ifdef SIGIO | |
2141 | gobble_input (0); | |
2142 | #endif /* SIGIO */ | |
2143 | if (EVENT_QUEUES_EMPTY) | |
2144 | { | |
f76475ad JB |
2145 | Lisp_Object minus_one; |
2146 | ||
18cd2eeb | 2147 | XSETINT (minus_one, -1); |
f76475ad | 2148 | wait_reading_process_input (0, 0, minus_one, 1); |
284f4730 JB |
2149 | |
2150 | if (!interrupt_input && EVENT_QUEUES_EMPTY) | |
bedae5a5 RS |
2151 | /* Pass 1 for EXPECT since we just waited to have input. */ |
2152 | read_avail_input (1); | |
284f4730 JB |
2153 | } |
2154 | #endif /* not VMS */ | |
2155 | } | |
2156 | ||
2157 | /* At this point, we know that there is a readable event available | |
2158 | somewhere. If the event queue is empty, then there must be a | |
2159 | mouse movement enabled and available. */ | |
2160 | if (kbd_fetch_ptr != kbd_store_ptr) | |
2161 | { | |
cd21b839 | 2162 | struct input_event *event; |
3e51c7b7 | 2163 | |
856bf263 | 2164 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
cd21b839 JB |
2165 | ? kbd_fetch_ptr |
2166 | : kbd_buffer); | |
3e51c7b7 | 2167 | |
cd21b839 | 2168 | last_event_timestamp = event->timestamp; |
cd21b839 | 2169 | |
4bb994d1 JB |
2170 | obj = Qnil; |
2171 | ||
48e416d4 | 2172 | /* These two kinds of events get special handling |
a612e298 RS |
2173 | and don't actually appear to the command loop. |
2174 | We return nil for them. */ | |
48e416d4 RS |
2175 | if (event->kind == selection_request_event) |
2176 | { | |
598a9fa7 | 2177 | #ifdef HAVE_X11 |
48e416d4 RS |
2178 | x_handle_selection_request (event); |
2179 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2180 | #else |
2181 | /* We're getting selection request events, but we don't have | |
2182 | a window system. */ | |
2183 | abort (); | |
2184 | #endif | |
48e416d4 RS |
2185 | } |
2186 | ||
1e12dd87 | 2187 | else if (event->kind == selection_clear_event) |
48e416d4 | 2188 | { |
598a9fa7 | 2189 | #ifdef HAVE_X11 |
48e416d4 RS |
2190 | x_handle_selection_clear (event); |
2191 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2192 | #else |
2193 | /* We're getting selection request events, but we don't have | |
2194 | a window system. */ | |
2195 | abort (); | |
2196 | #endif | |
48e416d4 | 2197 | } |
990acea3 RS |
2198 | #ifdef HAVE_X11 |
2199 | else if (event->kind == delete_window_event) | |
2200 | { | |
bbdc2092 RS |
2201 | /* Make an event (delete-frame (FRAME)). */ |
2202 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b KH |
2203 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
2204 | kbd_fetch_ptr = event + 1; | |
2205 | } | |
2206 | else if (event->kind == iconify_event) | |
2207 | { | |
2208 | /* Make an event (iconify-frame (FRAME)). */ | |
2209 | obj = Fcons (event->frame_or_window, Qnil); | |
2210 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
2211 | kbd_fetch_ptr = event + 1; | |
2212 | } | |
2213 | else if (event->kind == deiconify_event) | |
2214 | { | |
2215 | /* Make an event (make-frame-visible (FRAME)). */ | |
2216 | obj = Fcons (event->frame_or_window, Qnil); | |
2217 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
854f3a54 | 2218 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2219 | } |
2220 | #endif | |
f5e09c8b RS |
2221 | else if (event->kind == menu_bar_event) |
2222 | { | |
2223 | /* The event value is in the frame_or_window slot. */ | |
2224 | obj = event->frame_or_window; | |
2225 | kbd_fetch_ptr = event + 1; | |
2226 | } | |
a8015ab5 KH |
2227 | else if (event->kind == buffer_switch_event) |
2228 | { | |
2229 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2230 | XSETBUFFER (obj, current_buffer); |
a8015ab5 KH |
2231 | kbd_fetch_ptr = event + 1; |
2232 | } | |
a612e298 RS |
2233 | /* Just discard these, by returning nil. |
2234 | (They shouldn't be found in the buffer, | |
2235 | but on some machines it appears they do show up.) */ | |
2236 | else if (event->kind == no_event) | |
2237 | kbd_fetch_ptr = event + 1; | |
48e416d4 | 2238 | |
4bb994d1 JB |
2239 | /* If this event is on a different frame, return a switch-frame this |
2240 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2241 | else |
2242 | { | |
a6d53864 | 2243 | #ifdef MULTI_FRAME |
9b8eb840 | 2244 | Lisp_Object frame; |
1e12dd87 | 2245 | Lisp_Object focus; |
7b4aedb9 | 2246 | |
9b8eb840 | 2247 | frame = event->frame_or_window; |
8c18cbfb | 2248 | if (WINDOWP (frame)) |
1e12dd87 | 2249 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2250 | |
1e12dd87 RS |
2251 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2252 | if (! NILP (focus)) | |
2253 | frame = focus; | |
07d2b8de | 2254 | |
1e12dd87 RS |
2255 | if (! EQ (frame, internal_last_event_frame) |
2256 | && XFRAME (frame) != selected_frame) | |
2257 | obj = make_lispy_switch_frame (frame); | |
2258 | internal_last_event_frame = frame; | |
a6d53864 | 2259 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2260 | |
1e12dd87 RS |
2261 | /* If we didn't decide to make a switch-frame event, go ahead |
2262 | and build a real event from the queue entry. */ | |
cd21b839 | 2263 | |
1e12dd87 RS |
2264 | if (NILP (obj)) |
2265 | { | |
2266 | obj = make_lispy_event (event); | |
2267 | ||
2268 | /* Wipe out this event, to catch bugs. */ | |
2269 | event->kind = no_event; | |
2270 | (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] | |
2271 | = Qnil); | |
2272 | ||
2273 | kbd_fetch_ptr = event + 1; | |
2274 | } | |
4bb994d1 | 2275 | } |
284f4730 | 2276 | } |
2eb6bfbe | 2277 | #ifdef HAVE_MOUSE |
a612e298 | 2278 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2279 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2280 | { |
a9d77f1f | 2281 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2282 | Lisp_Object bar_window; |
3c370943 | 2283 | enum scroll_bar_part part; |
e5d77022 JB |
2284 | Lisp_Object x, y; |
2285 | unsigned long time; | |
284f4730 | 2286 | |
e177ac3a RS |
2287 | /* Note that this uses F to determine which display to look at. |
2288 | If there is no valid info, it does not store anything | |
2289 | so x remains nil. */ | |
2290 | x = Qnil; | |
7b4aedb9 | 2291 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2292 | |
2293 | obj = Qnil; | |
284f4730 | 2294 | |
07d2b8de | 2295 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2296 | /* Decide if we should generate a switch-frame event. Don't |
2297 | generate switch-frame events for motion outside of all Emacs | |
2298 | frames. */ | |
e177ac3a | 2299 | if (!NILP (x) && f) |
cd21b839 | 2300 | { |
9b8eb840 | 2301 | Lisp_Object frame; |
4bb994d1 | 2302 | |
9b8eb840 | 2303 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2304 | if (NILP (frame)) |
18cd2eeb | 2305 | XSETFRAME (frame, f); |
4bb994d1 | 2306 | |
80645119 JB |
2307 | if (! EQ (frame, internal_last_event_frame) |
2308 | && XFRAME (frame) != selected_frame) | |
764cb3f9 | 2309 | obj = make_lispy_switch_frame (frame); |
80645119 | 2310 | internal_last_event_frame = frame; |
cd21b839 | 2311 | } |
68553292 | 2312 | #endif |
4bb994d1 JB |
2313 | |
2314 | /* If we didn't decide to make a switch-frame event, go ahead and | |
2315 | return a mouse-motion event. */ | |
e177ac3a | 2316 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2317 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2318 | } |
2eb6bfbe | 2319 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2320 | else |
2321 | /* We were promised by the above while loop that there was | |
2322 | something for us to read! */ | |
2323 | abort (); | |
2324 | ||
2325 | input_pending = readable_events (); | |
2326 | ||
3c370943 JB |
2327 | #ifdef MULTI_FRAME |
2328 | Vlast_event_frame = internal_last_event_frame; | |
2329 | #endif | |
2330 | ||
284f4730 JB |
2331 | return (obj); |
2332 | } | |
a612e298 RS |
2333 | \f |
2334 | /* Process any events that are not user-visible, | |
2335 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2336 | |
2337 | void | |
2338 | swallow_events () | |
2339 | { | |
2340 | while (kbd_fetch_ptr != kbd_store_ptr) | |
2341 | { | |
2342 | struct input_event *event; | |
2343 | ||
2344 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) | |
2345 | ? kbd_fetch_ptr | |
2346 | : kbd_buffer); | |
2347 | ||
2348 | last_event_timestamp = event->timestamp; | |
2349 | ||
2350 | /* These two kinds of events get special handling | |
2351 | and don't actually appear to the command loop. */ | |
2352 | if (event->kind == selection_request_event) | |
2353 | { | |
2354 | #ifdef HAVE_X11 | |
2355 | x_handle_selection_request (event); | |
2356 | kbd_fetch_ptr = event + 1; | |
2357 | #else | |
2358 | /* We're getting selection request events, but we don't have | |
2359 | a window system. */ | |
2360 | abort (); | |
2361 | #endif | |
2362 | } | |
2363 | ||
2364 | else if (event->kind == selection_clear_event) | |
2365 | { | |
2366 | #ifdef HAVE_X11 | |
2367 | x_handle_selection_clear (event); | |
2368 | kbd_fetch_ptr = event + 1; | |
2369 | #else | |
2370 | /* We're getting selection request events, but we don't have | |
2371 | a window system. */ | |
2372 | abort (); | |
2373 | #endif | |
2374 | } | |
2375 | else | |
2376 | break; | |
2377 | } | |
2378 | ||
2379 | get_input_pending (&input_pending); | |
2380 | } | |
a612e298 | 2381 | \f |
284f4730 | 2382 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2383 | static Lisp_Object accent_key_syms; |
270a208f | 2384 | static Lisp_Object system_key_syms; |
284f4730 JB |
2385 | static Lisp_Object func_key_syms; |
2386 | static Lisp_Object mouse_syms; | |
2387 | ||
270a208f | 2388 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2389 | |
e9bf89a0 RS |
2390 | /* This is a list of keysym codes for special "accent" characters. |
2391 | It parallels lispy_accent_keys. */ | |
2392 | ||
2393 | static int lispy_accent_codes[] = | |
2394 | { | |
79a7046c | 2395 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2396 | XK_dead_circumflex, |
79a7046c RS |
2397 | #else |
2398 | 0, | |
2399 | #endif | |
2400 | #ifdef XK_dead_grave | |
e9bf89a0 | 2401 | XK_dead_grave, |
79a7046c RS |
2402 | #else |
2403 | 0, | |
2404 | #endif | |
2405 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2406 | XK_dead_tilde, |
79a7046c RS |
2407 | #else |
2408 | 0, | |
2409 | #endif | |
2410 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2411 | XK_dead_diaeresis, |
79a7046c RS |
2412 | #else |
2413 | 0, | |
2414 | #endif | |
2415 | #ifdef XK_dead_macron | |
e9bf89a0 | 2416 | XK_dead_macron, |
79a7046c RS |
2417 | #else |
2418 | 0, | |
2419 | #endif | |
2420 | #ifdef XK_dead_degree | |
e9bf89a0 | 2421 | XK_dead_degree, |
79a7046c RS |
2422 | #else |
2423 | 0, | |
2424 | #endif | |
2425 | #ifdef XK_dead_acute | |
e9bf89a0 | 2426 | XK_dead_acute, |
79a7046c RS |
2427 | #else |
2428 | 0, | |
2429 | #endif | |
2430 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2431 | XK_dead_cedilla, |
79a7046c RS |
2432 | #else |
2433 | 0, | |
2434 | #endif | |
2435 | #ifdef XK_dead_breve | |
e9bf89a0 | 2436 | XK_dead_breve, |
79a7046c RS |
2437 | #else |
2438 | 0, | |
2439 | #endif | |
2440 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2441 | XK_dead_ogonek, |
79a7046c RS |
2442 | #else |
2443 | 0, | |
2444 | #endif | |
2445 | #ifdef XK_dead_caron | |
e9bf89a0 | 2446 | XK_dead_caron, |
79a7046c RS |
2447 | #else |
2448 | 0, | |
2449 | #endif | |
2450 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2451 | XK_dead_doubleacute, |
79a7046c RS |
2452 | #else |
2453 | 0, | |
2454 | #endif | |
2455 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2456 | XK_dead_abovedot, |
79a7046c RS |
2457 | #else |
2458 | 0, | |
2459 | #endif | |
e9bf89a0 RS |
2460 | }; |
2461 | ||
2462 | /* This is a list of Lisp names for special "accent" characters. | |
2463 | It parallels lispy_accent_codes. */ | |
2464 | ||
2465 | static char *lispy_accent_keys[] = | |
2466 | { | |
2467 | "dead-circumflex", | |
2468 | "dead-grave", | |
2469 | "dead-tilde", | |
2470 | "dead-diaeresis", | |
2471 | "dead-macron", | |
2472 | "dead-degree", | |
2473 | "dead-acute", | |
2474 | "dead-cedilla", | |
2475 | "dead-breve", | |
2476 | "dead-ogonek", | |
2477 | "dead-caron", | |
2478 | "dead-doubleacute", | |
2479 | "dead-abovedot", | |
2480 | }; | |
2481 | ||
284f4730 JB |
2482 | /* You'll notice that this table is arranged to be conveniently |
2483 | indexed by X Windows keysym values. */ | |
2484 | static char *lispy_function_keys[] = | |
2485 | { | |
2486 | /* X Keysym value */ | |
2487 | ||
80e4aa30 | 2488 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2489 | "backspace", |
2490 | "tab", | |
2491 | "linefeed", | |
2492 | "clear", | |
2493 | 0, | |
2494 | "return", | |
2495 | 0, 0, | |
2496 | 0, 0, 0, /* 0xff10 */ | |
2497 | "pause", | |
2498 | 0, 0, 0, 0, 0, 0, 0, | |
2499 | "escape", | |
2500 | 0, 0, 0, 0, | |
2501 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2502 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2503 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2504 | ||
284f4730 JB |
2505 | "home", /* 0xff50 */ /* IsCursorKey */ |
2506 | "left", | |
2507 | "up", | |
2508 | "right", | |
2509 | "down", | |
2510 | "prior", | |
2511 | "next", | |
2512 | "end", | |
2513 | "begin", | |
2514 | 0, /* 0xff59 */ | |
2515 | 0, 0, 0, 0, 0, 0, | |
2516 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2517 | "print", | |
2518 | "execute", | |
2519 | "insert", | |
2520 | 0, /* 0xff64 */ | |
2521 | "undo", | |
2522 | "redo", | |
2523 | "menu", | |
2524 | "find", | |
2525 | "cancel", | |
2526 | "help", | |
2527 | "break", /* 0xff6b */ | |
2528 | ||
9fdbfdf8 | 2529 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2530 | 0, /* 0xff76 */ |
36ae397e | 2531 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2532 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2533 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2534 | "kp-tab", /* 0xff89 */ | |
2535 | 0, 0, 0, | |
2536 | "kp-enter", /* 0xff8d */ | |
2537 | 0, 0, 0, | |
2538 | "kp-f1", /* 0xff91 */ | |
2539 | "kp-f2", | |
2540 | "kp-f3", | |
2541 | "kp-f4", | |
872157e7 RS |
2542 | "kp-home", /* 0xff95 */ |
2543 | "kp-left", | |
2544 | "kp-up", | |
2545 | "kp-right", | |
2546 | "kp-down", | |
2547 | "kp-prior", /* kp-page-up */ | |
2548 | "kp-next", /* kp-page-down */ | |
2549 | "kp-end", | |
2550 | "kp-begin", | |
2551 | "kp-insert", | |
2552 | "kp-delete", | |
2553 | 0, /* 0xffa0 */ | |
2554 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2555 | "kp-multiply", /* 0xffaa */ |
2556 | "kp-add", | |
2557 | "kp-separator", | |
2558 | "kp-subtract", | |
2559 | "kp-decimal", | |
2560 | "kp-divide", /* 0xffaf */ | |
2561 | "kp-0", /* 0xffb0 */ | |
2562 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2563 | 0, /* 0xffba */ | |
2564 | 0, 0, | |
2565 | "kp-equal", /* 0xffbd */ | |
2566 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2567 | "f2", |
2568 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2569 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2570 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2571 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2572 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2573 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2574 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2575 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2576 | }; |
2577 | ||
2578 | static char *lispy_mouse_names[] = | |
2579 | { | |
2580 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2581 | }; | |
2582 | ||
3c370943 | 2583 | /* Scroll bar parts. */ |
4bb994d1 JB |
2584 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2585 | ||
3c370943 JB |
2586 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2587 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2588 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2589 | }; | |
2590 | ||
2591 | ||
7b4aedb9 | 2592 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2593 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2594 | |
2595 | The elements have the form | |
2596 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2597 | where REST is the cdr of a position as it would be reported in the event. | |
2598 | ||
2599 | The make_lispy_event function stores positions here to tell the | |
2600 | difference between click and drag events, and to store the starting | |
2601 | location to be included in drag events. */ | |
2602 | ||
2603 | static Lisp_Object button_down_location; | |
88cb0656 | 2604 | |
fbcd35bd JB |
2605 | /* Information about the most recent up-going button event: Which |
2606 | button, what location, and what time. */ | |
2607 | ||
559f9d04 RS |
2608 | static int last_mouse_button; |
2609 | static int last_mouse_x; | |
2610 | static int last_mouse_y; | |
2611 | static unsigned long button_down_time; | |
fbcd35bd | 2612 | |
564dc952 JB |
2613 | /* The maximum time between clicks to make a double-click, |
2614 | or Qnil to disable double-click detection, | |
2615 | or Qt for no time limit. */ | |
2616 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2617 | |
2618 | /* The number of clicks in this multiple-click. */ | |
2619 | ||
2620 | int double_click_count; | |
2621 | ||
bb936752 FP |
2622 | #ifdef USE_X_TOOLKIT |
2623 | extern Lisp_Object map_event_to_object (); | |
2624 | #endif /* USE_X_TOOLKIT */ | |
2625 | ||
284f4730 JB |
2626 | /* Given a struct input_event, build the lisp event which represents |
2627 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2628 | movement buffer, which should have a movement event in it. |
2629 | ||
2630 | Note that events must be passed to this function in the order they | |
2631 | are received; this function stores the location of button presses | |
2632 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2633 | |
2634 | static Lisp_Object | |
2635 | make_lispy_event (event) | |
2636 | struct input_event *event; | |
2637 | { | |
79a7046c RS |
2638 | int i; |
2639 | ||
284f4730 JB |
2640 | #ifdef SWITCH_ENUM_BUG |
2641 | switch ((int) event->kind) | |
2642 | #else | |
2643 | switch (event->kind) | |
2644 | #endif | |
2645 | { | |
284f4730 JB |
2646 | /* A simple keystroke. */ |
2647 | case ascii_keystroke: | |
86e5706b | 2648 | { |
9343ab07 | 2649 | Lisp_Object lispy_c; |
e9bf89a0 | 2650 | int c = event->code & 0377; |
5a1c6df8 JB |
2651 | /* Turn ASCII characters into control characters |
2652 | when proper. */ | |
2653 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2654 | c = make_ctrl_char (c); |
2655 | ||
2656 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2657 | just above, and the shift key was taken care of by the X code, | |
2658 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2659 | c |= (event->modifiers |
2660 | & (meta_modifier | alt_modifier | |
2661 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2662 | button_down_time = 0; |
bb9e9bed | 2663 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2664 | return lispy_c; |
86e5706b | 2665 | } |
284f4730 JB |
2666 | |
2667 | /* A function key. The symbol may need to have modifier prefixes | |
2668 | tacked onto it. */ | |
2669 | case non_ascii_keystroke: | |
559f9d04 | 2670 | button_down_time = 0; |
e9bf89a0 RS |
2671 | |
2672 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2673 | if (event->code == lispy_accent_codes[i]) | |
2674 | return modify_event_symbol (i, | |
2675 | event->modifiers, | |
80e4aa30 | 2676 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2677 | lispy_accent_keys, &accent_key_syms, |
2678 | (sizeof (lispy_accent_keys) | |
2679 | / sizeof (lispy_accent_keys[0]))); | |
2680 | ||
270a208f | 2681 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2682 | if (event->code & (1 << 28)) |
2683 | { | |
2684 | /* We need to use an alist rather than a vector as the cache | |
2685 | since we can't make a vector long enuf. */ | |
270a208f RS |
2686 | if (NILP (system_key_syms)) |
2687 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2688 | return modify_event_symbol (event->code & 0xffffff, |
2689 | event->modifiers, | |
270a208f RS |
2690 | Qfunction_key, Vsystem_key_alist, |
2691 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2692 | } |
2693 | ||
e9bf89a0 RS |
2694 | return modify_event_symbol (event->code - 0xff00, |
2695 | event->modifiers, | |
80e4aa30 | 2696 | Qfunction_key, Qnil, |
284f4730 JB |
2697 | lispy_function_keys, &func_key_syms, |
2698 | (sizeof (lispy_function_keys) | |
2699 | / sizeof (lispy_function_keys[0]))); | |
2700 | break; | |
2701 | ||
87485d6f | 2702 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
88cb0656 JB |
2703 | /* A mouse click. Figure out where it is, decide whether it's |
2704 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2705 | case mouse_click: |
3c370943 | 2706 | case scroll_bar_click: |
284f4730 | 2707 | { |
e9bf89a0 | 2708 | int button = event->code; |
559f9d04 | 2709 | int is_double; |
7b4aedb9 | 2710 | Lisp_Object position; |
dbc4e1c1 JB |
2711 | Lisp_Object *start_pos_ptr; |
2712 | Lisp_Object start_pos; | |
284f4730 | 2713 | |
7b4aedb9 | 2714 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2715 | abort (); |
2716 | ||
7b4aedb9 JB |
2717 | /* Build the position as appropriate for this mouse click. */ |
2718 | if (event->kind == mouse_click) | |
284f4730 | 2719 | { |
7b4aedb9 | 2720 | int part; |
598a9fa7 | 2721 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2722 | Lisp_Object window; |
7b4aedb9 | 2723 | Lisp_Object posn; |
9e20143a RS |
2724 | int row, column; |
2725 | ||
5da3133a RS |
2726 | /* Ignore mouse events that were made on frame that |
2727 | have been deleted. */ | |
2728 | if (! FRAME_LIVE_P (f)) | |
2729 | return Qnil; | |
2730 | ||
9e20143a | 2731 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
eef045bf | 2732 | &column, &row, 0, 1); |
7b4aedb9 | 2733 | |
eef045bf RS |
2734 | #ifndef USE_X_TOOLKIT |
2735 | /* In the non-toolkit version, clicks on the menu bar | |
2736 | are ordinary button events in the event buffer. | |
2737 | Distinguish them, and invoke the menu. | |
2738 | ||
2739 | (In the toolkit version, the toolkit handles the menu bar | |
2740 | and Emacs doesn't know about it until after the user | |
2741 | makes a selection.) */ | |
2742 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f)) | |
bb936752 | 2743 | { |
b7c49376 | 2744 | Lisp_Object items, item; |
0a0e8fe6 RS |
2745 | int hpos; |
2746 | int i; | |
2747 | ||
2748 | /* Activate the menu bar on the down event. If the | |
2749 | up event comes in before the menu code can deal with it, | |
2750 | just ignore it. */ | |
2751 | if (! (event->modifiers & down_modifier)) | |
2752 | return Qnil; | |
0aafc975 | 2753 | |
f2ae6b3f | 2754 | item = Qnil; |
5ec75a55 | 2755 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2756 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2757 | { |
2758 | Lisp_Object pos, string; | |
b7c49376 RS |
2759 | string = XVECTOR (items)->contents[i + 1]; |
2760 | pos = XVECTOR (items)->contents[i + 2]; | |
2761 | if (NILP (string)) | |
2762 | break; | |
9e20143a RS |
2763 | if (column >= XINT (pos) |
2764 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2765 | { |
2766 | item = XVECTOR (items)->contents[i]; | |
2767 | break; | |
2768 | } | |
5ec75a55 | 2769 | } |
9e20143a | 2770 | |
5ec75a55 RS |
2771 | position |
2772 | = Fcons (event->frame_or_window, | |
2773 | Fcons (Qmenu_bar, | |
2774 | Fcons (Fcons (event->x, event->y), | |
2775 | Fcons (make_number (event->timestamp), | |
2776 | Qnil)))); | |
2777 | ||
b7c49376 | 2778 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2779 | } |
eef045bf | 2780 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 2781 | |
9e20143a | 2782 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 2783 | |
8c18cbfb | 2784 | if (!WINDOWP (window)) |
78ced549 RS |
2785 | { |
2786 | window = event->frame_or_window; | |
2787 | posn = Qnil; | |
2788 | } | |
284f4730 | 2789 | else |
7b4aedb9 | 2790 | { |
9e20143a RS |
2791 | int pixcolumn, pixrow; |
2792 | column -= XINT (XWINDOW (window)->left); | |
2793 | row -= XINT (XWINDOW (window)->top); | |
2794 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2795 | XSETINT (event->x, pixcolumn); | |
2796 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2797 | |
7b4aedb9 JB |
2798 | if (part == 1) |
2799 | posn = Qmode_line; | |
2800 | else if (part == 2) | |
2801 | posn = Qvertical_line; | |
2802 | else | |
18cd2eeb KH |
2803 | XSETINT (posn, |
2804 | buffer_posn_from_coords (XWINDOW (window), | |
2805 | column, row)); | |
7b4aedb9 JB |
2806 | } |
2807 | ||
5ec75a55 RS |
2808 | position |
2809 | = Fcons (window, | |
2810 | Fcons (posn, | |
2811 | Fcons (Fcons (event->x, event->y), | |
2812 | Fcons (make_number (event->timestamp), | |
2813 | Qnil)))); | |
284f4730 | 2814 | } |
7b4aedb9 | 2815 | else |
88cb0656 | 2816 | { |
9e20143a RS |
2817 | Lisp_Object window; |
2818 | Lisp_Object portion_whole; | |
2819 | Lisp_Object part; | |
2820 | ||
2821 | window = event->frame_or_window; | |
2822 | portion_whole = Fcons (event->x, event->y); | |
2823 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2824 | |
2825 | position = | |
2826 | Fcons (window, | |
3c370943 | 2827 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2828 | Fcons (portion_whole, |
2829 | Fcons (make_number (event->timestamp), | |
9e20143a | 2830 | Fcons (part, Qnil))))); |
88cb0656 JB |
2831 | } |
2832 | ||
dbc4e1c1 JB |
2833 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2834 | ||
2835 | start_pos = *start_pos_ptr; | |
2836 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2837 | |
559f9d04 RS |
2838 | is_double = (button == last_mouse_button |
2839 | && XINT (event->x) == last_mouse_x | |
2840 | && XINT (event->y) == last_mouse_y | |
2841 | && button_down_time != 0 | |
2842 | && (EQ (Vdouble_click_time, Qt) | |
2843 | || (INTEGERP (Vdouble_click_time) | |
2844 | && ((int)(event->timestamp - button_down_time) | |
2845 | < XINT (Vdouble_click_time))))); | |
2846 | last_mouse_button = button; | |
2847 | last_mouse_x = XINT (event->x); | |
2848 | last_mouse_y = XINT (event->y); | |
2849 | ||
7b4aedb9 JB |
2850 | /* If this is a button press, squirrel away the location, so |
2851 | we can decide later whether it was a click or a drag. */ | |
2852 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2853 | { |
2854 | if (is_double) | |
2855 | { | |
2856 | double_click_count++; | |
2857 | event->modifiers |= ((double_click_count > 2) | |
2858 | ? triple_modifier | |
2859 | : double_modifier); | |
2860 | } | |
2861 | else | |
2862 | double_click_count = 1; | |
2863 | button_down_time = event->timestamp; | |
2864 | *start_pos_ptr = Fcopy_alist (position); | |
2865 | } | |
7b4aedb9 | 2866 | |
88cb0656 | 2867 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2868 | see if this was a click or a drag. */ |
88cb0656 JB |
2869 | else if (event->modifiers & up_modifier) |
2870 | { | |
48e416d4 RS |
2871 | /* If we did not see a down before this up, |
2872 | ignore the up. Probably this happened because | |
2873 | the down event chose a menu item. | |
2874 | It would be an annoyance to treat the release | |
2875 | of the button that chose the menu item | |
2876 | as a separate event. */ | |
2877 | ||
8c18cbfb | 2878 | if (!CONSP (start_pos)) |
48e416d4 RS |
2879 | return Qnil; |
2880 | ||
88cb0656 | 2881 | event->modifiers &= ~up_modifier; |
48e416d4 | 2882 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 2883 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
2884 | event->modifiers |= click_modifier; |
2885 | else | |
48e416d4 | 2886 | #endif |
dbc4e1c1 JB |
2887 | { |
2888 | /* The third element of every position should be the (x,y) | |
2889 | pair. */ | |
9b8eb840 | 2890 | Lisp_Object down; |
dbc4e1c1 | 2891 | |
9b8eb840 | 2892 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
2893 | if (EQ (event->x, XCONS (down)->car) |
2894 | && EQ (event->y, XCONS (down)->cdr)) | |
2895 | { | |
bc536d84 | 2896 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2897 | } |
2898 | else | |
2899 | { | |
559f9d04 | 2900 | button_down_time = 0; |
fbcd35bd JB |
2901 | event->modifiers |= drag_modifier; |
2902 | } | |
bc536d84 RS |
2903 | /* Don't check is_double; treat this as multiple |
2904 | if the down-event was multiple. */ | |
2905 | if (double_click_count > 1) | |
2906 | event->modifiers |= ((double_click_count > 2) | |
2907 | ? triple_modifier | |
2908 | : double_modifier); | |
dbc4e1c1 | 2909 | } |
88cb0656 JB |
2910 | } |
2911 | else | |
2912 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2913 | the up_modifier set. */ |
88cb0656 JB |
2914 | abort (); |
2915 | ||
88cb0656 | 2916 | { |
7b4aedb9 | 2917 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
2918 | Lisp_Object head; |
2919 | ||
2920 | head = modify_event_symbol (button, | |
2921 | event->modifiers, | |
2922 | Qmouse_click, Qnil, | |
2923 | lispy_mouse_names, &mouse_syms, | |
2924 | (sizeof (lispy_mouse_names) | |
2925 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 2926 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
2927 | return Fcons (head, |
2928 | Fcons (start_pos, | |
2929 | Fcons (position, | |
2930 | Qnil))); | |
fbcd35bd JB |
2931 | else if (event->modifiers & (double_modifier | triple_modifier)) |
2932 | return Fcons (head, | |
2933 | Fcons (position, | |
2934 | Fcons (make_number (double_click_count), | |
2935 | Qnil))); | |
88cb0656 JB |
2936 | else |
2937 | return Fcons (head, | |
7b4aedb9 | 2938 | Fcons (position, |
88cb0656 JB |
2939 | Qnil)); |
2940 | } | |
284f4730 | 2941 | } |
5846638c | 2942 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 2943 | |
284f4730 JB |
2944 | /* The 'kind' field of the event is something we don't recognize. */ |
2945 | default: | |
48e416d4 | 2946 | abort (); |
284f4730 JB |
2947 | } |
2948 | } | |
2949 | ||
87485d6f | 2950 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
6cbff1cb | 2951 | |
284f4730 | 2952 | static Lisp_Object |
7b4aedb9 | 2953 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 2954 | FRAME_PTR frame; |
7b4aedb9 | 2955 | Lisp_Object bar_window; |
3c370943 | 2956 | enum scroll_bar_part part; |
284f4730 | 2957 | Lisp_Object x, y; |
e5d77022 | 2958 | unsigned long time; |
284f4730 | 2959 | { |
68553292 | 2960 | #ifdef MULTI_FRAME |
3c370943 | 2961 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 2962 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 2963 | { |
9b8eb840 | 2964 | Lisp_Object part_sym; |
4bb994d1 | 2965 | |
9b8eb840 | 2966 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 2967 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 2968 | (Fcons (Fcons (bar_window, |
3c370943 | 2969 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
2970 | Fcons (Fcons (x, y), |
2971 | Fcons (make_number (time), | |
cb5df6ae | 2972 | Fcons (part_sym, |
4bb994d1 JB |
2973 | Qnil))))), |
2974 | Qnil))); | |
2975 | } | |
2976 | ||
2977 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 2978 | else |
68553292 | 2979 | #endif /* MULTI_FRAME */ |
284f4730 | 2980 | { |
4bb994d1 | 2981 | int area; |
9e20143a | 2982 | Lisp_Object window; |
4bb994d1 | 2983 | Lisp_Object posn; |
9e20143a RS |
2984 | int column, row; |
2985 | ||
68553292 | 2986 | #ifdef MULTI_FRAME |
9e20143a | 2987 | if (frame) |
68553292 RS |
2988 | #else |
2989 | if (1) | |
2990 | #endif | |
047688cb RS |
2991 | { |
2992 | /* It's in a frame; which window on that frame? */ | |
2993 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
2994 | window = window_from_coordinates (frame, column, row, &area); | |
2995 | } | |
9e20143a RS |
2996 | else |
2997 | window = Qnil; | |
4bb994d1 | 2998 | |
8c18cbfb | 2999 | if (WINDOWP (window)) |
4bb994d1 | 3000 | { |
9e20143a RS |
3001 | int pixcolumn, pixrow; |
3002 | column -= XINT (XWINDOW (window)->left); | |
3003 | row -= XINT (XWINDOW (window)->top); | |
3004 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3005 | XSETINT (x, pixcolumn); | |
3006 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3007 | |
3008 | if (area == 1) | |
3009 | posn = Qmode_line; | |
3010 | else if (area == 2) | |
3011 | posn = Qvertical_line; | |
3012 | else | |
18cd2eeb KH |
3013 | XSETINT (posn, |
3014 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3015 | } |
68553292 | 3016 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3017 | else if (frame != 0) |
3018 | { | |
18cd2eeb | 3019 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3020 | posn = Qnil; |
3021 | } | |
68553292 | 3022 | #endif |
284f4730 | 3023 | else |
4bb994d1 JB |
3024 | { |
3025 | window = Qnil; | |
3026 | posn = Qnil; | |
bb9e9bed KH |
3027 | XSETFASTINT (x, 0); |
3028 | XSETFASTINT (y, 0); | |
4bb994d1 | 3029 | } |
284f4730 | 3030 | |
4bb994d1 JB |
3031 | return Fcons (Qmouse_movement, |
3032 | Fcons (Fcons (window, | |
3033 | Fcons (posn, | |
3034 | Fcons (Fcons (x, y), | |
3035 | Fcons (make_number (time), | |
3036 | Qnil)))), | |
3037 | Qnil)); | |
3038 | } | |
284f4730 JB |
3039 | } |
3040 | ||
68553292 | 3041 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 3042 | |
cd21b839 JB |
3043 | /* Construct a switch frame event. */ |
3044 | static Lisp_Object | |
3045 | make_lispy_switch_frame (frame) | |
3046 | Lisp_Object frame; | |
3047 | { | |
3048 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3049 | } | |
0a7f1fc0 JB |
3050 | \f |
3051 | /* Manipulating modifiers. */ | |
284f4730 | 3052 | |
0a7f1fc0 | 3053 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3054 | |
0a7f1fc0 JB |
3055 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3056 | SYMBOL's name of the end of the modifiers; the string from this | |
3057 | position is the unmodified symbol name. | |
284f4730 | 3058 | |
0a7f1fc0 JB |
3059 | This doesn't use any caches. */ |
3060 | static int | |
3061 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3062 | Lisp_Object symbol; |
0a7f1fc0 | 3063 | int *modifier_end; |
284f4730 JB |
3064 | { |
3065 | struct Lisp_String *name; | |
3066 | int i; | |
3067 | int modifiers; | |
284f4730 JB |
3068 | |
3069 | CHECK_SYMBOL (symbol, 1); | |
3070 | ||
3071 | modifiers = 0; | |
3072 | name = XSYMBOL (symbol)->name; | |
3073 | ||
284f4730 | 3074 | |
0a7f1fc0 | 3075 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
3076 | switch (name->data[i]) |
3077 | { | |
0a7f1fc0 JB |
3078 | #define SINGLE_LETTER_MOD(bit) \ |
3079 | if (name->data[i+1] != '-') \ | |
3080 | goto no_more_modifiers; \ | |
3081 | modifiers |= bit; \ | |
fce33686 | 3082 | i += 2; |
0a7f1fc0 JB |
3083 | |
3084 | case 'A': | |
3085 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
3086 | break; |
3087 | ||
3088 | case 'C': | |
0a7f1fc0 | 3089 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
3090 | break; |
3091 | ||
3092 | case 'H': | |
0a7f1fc0 | 3093 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
3094 | break; |
3095 | ||
3096 | case 'M': | |
0a7f1fc0 | 3097 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
3098 | break; |
3099 | ||
3100 | case 'S': | |
0a7f1fc0 | 3101 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
3102 | break; |
3103 | ||
3104 | case 's': | |
86e5706b | 3105 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
3106 | break; |
3107 | ||
fce33686 JB |
3108 | case 'd': |
3109 | if (i + 5 > name->size) | |
3110 | goto no_more_modifiers; | |
3111 | if (! strncmp (name->data + i, "drag-", 5)) | |
3112 | { | |
fce33686 JB |
3113 | modifiers |= drag_modifier; |
3114 | i += 5; | |
3115 | } | |
3116 | else if (! strncmp (name->data + i, "down-", 5)) | |
3117 | { | |
fce33686 JB |
3118 | modifiers |= down_modifier; |
3119 | i += 5; | |
3120 | } | |
fbcd35bd JB |
3121 | else if (i + 7 <= name->size |
3122 | && ! strncmp (name->data + i, "double-", 7)) | |
3123 | { | |
3124 | modifiers |= double_modifier; | |
3125 | i += 7; | |
3126 | } | |
3127 | else | |
3128 | goto no_more_modifiers; | |
3129 | break; | |
3130 | ||
3131 | case 't': | |
3132 | if (i + 7 > name->size) | |
3133 | goto no_more_modifiers; | |
3134 | if (! strncmp (name->data + i, "triple-", 7)) | |
3135 | { | |
3136 | modifiers |= triple_modifier; | |
3137 | i += 7; | |
3138 | } | |
fce33686 JB |
3139 | else |
3140 | goto no_more_modifiers; | |
284f4730 JB |
3141 | break; |
3142 | ||
3143 | default: | |
3144 | goto no_more_modifiers; | |
0a7f1fc0 JB |
3145 | |
3146 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
3147 | } |
3148 | no_more_modifiers: | |
3149 | ||
0a7f1fc0 | 3150 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3151 | if (! (modifiers & (down_modifier | drag_modifier |
3152 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3153 | && i + 7 == name->size |
4bb994d1 | 3154 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3155 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3156 | modifiers |= click_modifier; |
3157 | ||
3158 | if (modifier_end) | |
3159 | *modifier_end = i; | |
3160 | ||
3161 | return modifiers; | |
3162 | } | |
3163 | ||
3164 | ||
3165 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
3166 | prepended to the string BASE[0..BASE_LEN-1]. | |
3167 | This doesn't use any caches. */ | |
3168 | static Lisp_Object | |
3169 | apply_modifiers_uncached (modifiers, base, base_len) | |
3170 | int modifiers; | |
3171 | char *base; | |
3172 | int base_len; | |
3173 | { | |
3174 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3175 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3176 | reference to it. */ | |
3177 | char *new_mods = | |
fbcd35bd | 3178 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3179 | int mod_len; |
284f4730 | 3180 | |
284f4730 | 3181 | { |
0a7f1fc0 JB |
3182 | char *p = new_mods; |
3183 | ||
3184 | /* Only the event queue may use the `up' modifier; it should always | |
3185 | be turned into a click or drag event before presented to lisp code. */ | |
3186 | if (modifiers & up_modifier) | |
3187 | abort (); | |
3188 | ||
3189 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3190 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3191 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3192 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3193 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3194 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3195 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3196 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3197 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3198 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3199 | /* The click modifier is denoted by the absence of other modifiers. */ |
3200 | ||
3201 | *p = '\0'; | |
3202 | ||
3203 | mod_len = p - new_mods; | |
3204 | } | |
284f4730 | 3205 | |
0a7f1fc0 | 3206 | { |
9b8eb840 | 3207 | Lisp_Object new_name; |
0a7f1fc0 | 3208 | |
9b8eb840 | 3209 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3210 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3211 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3212 | |
3213 | return Fintern (new_name, Qnil); | |
3214 | } | |
3215 | } | |
3216 | ||
3217 | ||
0a7f1fc0 JB |
3218 | static char *modifier_names[] = |
3219 | { | |
fbcd35bd | 3220 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3221 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3222 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3223 | }; |
80645119 | 3224 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3225 | |
3226 | static Lisp_Object modifier_symbols; | |
3227 | ||
3228 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3229 | static Lisp_Object | |
3230 | lispy_modifier_list (modifiers) | |
3231 | int modifiers; | |
3232 | { | |
3233 | Lisp_Object modifier_list; | |
3234 | int i; | |
3235 | ||
3236 | modifier_list = Qnil; | |
80645119 | 3237 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3238 | if (modifiers & (1<<i)) |
80645119 JB |
3239 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3240 | modifier_list); | |
0a7f1fc0 JB |
3241 | |
3242 | return modifier_list; | |
3243 | } | |
3244 | ||
3245 | ||
3246 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3247 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3248 | MASK is the set of modifiers present in SYMBOL's name. | |
3249 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3250 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3251 | Qevent_symbol_elements property. */ | |
3252 | static Lisp_Object | |
3253 | parse_modifiers (symbol) | |
3254 | Lisp_Object symbol; | |
3255 | { | |
9b8eb840 | 3256 | Lisp_Object elements; |
0a7f1fc0 | 3257 | |
9b8eb840 | 3258 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3259 | if (CONSP (elements)) |
3260 | return elements; | |
3261 | else | |
3262 | { | |
3263 | int end; | |
3264 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3265 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3266 | Lisp_Object mask; |
3267 | ||
9b8eb840 KH |
3268 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3269 | XSYMBOL (symbol)->name->size - end), | |
3270 | Qnil); | |
3271 | ||
734fef94 JB |
3272 | if (modifiers & ~((1<<VALBITS) - 1)) |
3273 | abort (); | |
bb9e9bed | 3274 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3275 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3276 | ||
3277 | /* Cache the parsing results on SYMBOL. */ | |
3278 | Fput (symbol, Qevent_symbol_element_mask, | |
3279 | elements); | |
3280 | Fput (symbol, Qevent_symbol_elements, | |
3281 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3282 | ||
3283 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3284 | it would be nice to put that in unmodified's cache. | |
3285 | But we can't, since we're not sure that parse_modifiers is | |
3286 | canonical. */ | |
3287 | ||
3288 | return elements; | |
3289 | } | |
3290 | } | |
3291 | ||
3292 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3293 | BASE must be unmodified. | |
3294 | ||
3295 | This is like apply_modifiers_uncached, but uses BASE's | |
3296 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3297 | Qevent_symbol_elements properties, since it has that info anyway. |
3298 | ||
3299 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3300 | the modified symbol. */ | |
0a7f1fc0 JB |
3301 | static Lisp_Object |
3302 | apply_modifiers (modifiers, base) | |
3303 | int modifiers; | |
3304 | Lisp_Object base; | |
3305 | { | |
7b4aedb9 | 3306 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3307 | |
80645119 JB |
3308 | /* Mask out upper bits. We don't know where this value's been. */ |
3309 | modifiers &= (1<<VALBITS) - 1; | |
3310 | ||
0a7f1fc0 | 3311 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3312 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3313 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3314 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3315 | |
3316 | if (CONSP (entry)) | |
7b4aedb9 JB |
3317 | new_symbol = XCONS (entry)->cdr; |
3318 | else | |
3319 | { | |
3320 | /* We have to create the symbol ourselves. */ | |
3321 | new_symbol = apply_modifiers_uncached (modifiers, | |
3322 | XSYMBOL (base)->name->data, | |
3323 | XSYMBOL (base)->name->size); | |
3324 | ||
3325 | /* Add the new symbol to the base's cache. */ | |
3326 | entry = Fcons (index, new_symbol); | |
3327 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3328 | ||
3329 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3330 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3331 | Fput (new_symbol, Qevent_symbol_element_mask, |
3332 | Fcons (base, Fcons (index, Qnil))); | |
3333 | Fput (new_symbol, Qevent_symbol_elements, | |
3334 | Fcons (base, lispy_modifier_list (modifiers))); | |
3335 | } | |
0a7f1fc0 | 3336 | |
7b4aedb9 JB |
3337 | /* Make sure this symbol is of the same kind as BASE. |
3338 | ||
3339 | You'd think we could just set this once and for all when we | |
3340 | intern the symbol above, but reorder_modifiers may call us when | |
3341 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3342 | because it has a Qmodifier_cache property it must have its |
3343 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3344 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3345 | { | |
9b8eb840 | 3346 | Lisp_Object kind; |
7b4aedb9 | 3347 | |
9b8eb840 | 3348 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3349 | if (! NILP (kind)) |
3350 | Fput (new_symbol, Qevent_kind, kind); | |
3351 | } | |
3352 | ||
3353 | return new_symbol; | |
0a7f1fc0 JB |
3354 | } |
3355 | ||
3356 | ||
3357 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3358 | return a symbol with the modifiers placed in the canonical order. | |
3359 | Canonical order is alphabetical, except for down and drag, which | |
3360 | always come last. The 'click' modifier is never written out. | |
3361 | ||
3362 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3363 | and M-C-foo end up being equivalent in the keymap. */ | |
3364 | ||
3365 | Lisp_Object | |
3366 | reorder_modifiers (symbol) | |
3367 | Lisp_Object symbol; | |
3368 | { | |
3369 | /* It's hopefully okay to write the code this way, since everything | |
3370 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3371 | Lisp_Object parsed; |
0a7f1fc0 | 3372 | |
9b8eb840 | 3373 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3374 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3375 | XCONS (parsed)->car); | |
3376 | } | |
3377 | ||
3378 | ||
284f4730 JB |
3379 | /* For handling events, we often want to produce a symbol whose name |
3380 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3381 | to some base, like the name of a function key or mouse button. | |
3382 | modify_event_symbol produces symbols of this sort. | |
3383 | ||
3384 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3385 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3386 | in the table. | |
3387 | ||
80e4aa30 RS |
3388 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3389 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3390 | ||
284f4730 JB |
3391 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3392 | persist between calls to modify_event_symbol that it can use to | |
3393 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3394 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3395 | |
3396 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3397 | ||
3398 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3399 | whose prefixes should be applied to the symbol name. | |
3400 | ||
3401 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3402 | the returned symbol. |
3403 | ||
3404 | The symbols we create are supposed to have an | |
eb8c3be9 | 3405 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3406 | in the symbol's name. */ |
3407 | ||
284f4730 | 3408 | static Lisp_Object |
80e4aa30 RS |
3409 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3410 | name_table, symbol_table, table_size) | |
284f4730 JB |
3411 | int symbol_num; |
3412 | unsigned modifiers; | |
3413 | Lisp_Object symbol_kind; | |
80e4aa30 | 3414 | Lisp_Object name_alist; |
284f4730 JB |
3415 | char **name_table; |
3416 | Lisp_Object *symbol_table; | |
3417 | int table_size; | |
3418 | { | |
80e4aa30 RS |
3419 | Lisp_Object value; |
3420 | Lisp_Object symbol_int; | |
3421 | ||
18cd2eeb | 3422 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3423 | |
3424 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3425 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3426 | return Qnil; |
284f4730 | 3427 | |
80e4aa30 RS |
3428 | if (CONSP (*symbol_table)) |
3429 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3430 | ||
0a7f1fc0 | 3431 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3432 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3433 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3434 | we've never used that symbol before. */ | |
80e4aa30 | 3435 | else |
88cb0656 | 3436 | { |
80e4aa30 RS |
3437 | if (! VECTORP (*symbol_table) |
3438 | || XVECTOR (*symbol_table)->size != table_size) | |
3439 | { | |
3440 | Lisp_Object size; | |
0a7f1fc0 | 3441 | |
bb9e9bed | 3442 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3443 | *symbol_table = Fmake_vector (size, Qnil); |
3444 | } | |
284f4730 | 3445 | |
80e4aa30 RS |
3446 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3447 | } | |
284f4730 | 3448 | |
0a7f1fc0 | 3449 | /* Have we already used this symbol before? */ |
80e4aa30 | 3450 | if (NILP (value)) |
284f4730 | 3451 | { |
0a7f1fc0 | 3452 | /* No; let's create it. */ |
80e4aa30 | 3453 | if (!NILP (name_alist)) |
b64b4075 | 3454 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3455 | else if (name_table[symbol_num]) |
3456 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3457 | |
3458 | if (NILP (value)) | |
d1f50460 RS |
3459 | { |
3460 | char buf[20]; | |
3461 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3462 | value = intern (buf); |
d1f50460 | 3463 | } |
0a7f1fc0 | 3464 | |
80e4aa30 RS |
3465 | if (CONSP (*symbol_table)) |
3466 | *symbol_table = Fcons (value, *symbol_table); | |
3467 | else | |
3468 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3469 | ||
0a7f1fc0 JB |
3470 | /* Fill in the cache entries for this symbol; this also |
3471 | builds the Qevent_symbol_elements property, which the user | |
3472 | cares about. */ | |
80e4aa30 RS |
3473 | apply_modifiers (modifiers & click_modifier, value); |
3474 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3475 | } |
88cb0656 | 3476 | |
0a7f1fc0 | 3477 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3478 | return apply_modifiers (modifiers, value); |
284f4730 | 3479 | } |
0a7f1fc0 | 3480 | |
284f4730 | 3481 | \f |
284f4730 JB |
3482 | /* Store into *addr a value nonzero if terminal input chars are available. |
3483 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3484 | but works even if FIONREAD does not exist. | |
3485 | (In fact, this may actually read some input.) */ | |
3486 | ||
3487 | static void | |
3488 | get_input_pending (addr) | |
3489 | int *addr; | |
3490 | { | |
3491 | /* First of all, have we already counted some input? */ | |
3492 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3493 | ||
3494 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3495 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3496 | return; | |
3497 | ||
3498 | /* Try to read some input and see how much we get. */ | |
3499 | gobble_input (0); | |
3500 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3501 | } | |
3502 | ||
81931ba1 | 3503 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3504 | |
3505 | int | |
3506 | gobble_input (expected) | |
3507 | int expected; | |
3508 | { | |
3509 | #ifndef VMS | |
3510 | #ifdef SIGIO | |
3511 | if (interrupt_input) | |
3512 | { | |
32676c08 | 3513 | SIGMASKTYPE mask; |
e065a56e | 3514 | mask = sigblockx (SIGIO); |
284f4730 | 3515 | read_avail_input (expected); |
e065a56e | 3516 | sigsetmask (mask); |
284f4730 JB |
3517 | } |
3518 | else | |
81931ba1 RS |
3519 | #ifdef POLL_FOR_INPUT |
3520 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3521 | { | |
3522 | SIGMASKTYPE mask; | |
3523 | mask = sigblockx (SIGALRM); | |
3524 | read_avail_input (expected); | |
3525 | sigsetmask (mask); | |
3526 | } | |
3527 | else | |
87485d6f | 3528 | #endif |
284f4730 JB |
3529 | #endif |
3530 | read_avail_input (expected); | |
3531 | #endif | |
3532 | } | |
a8015ab5 | 3533 | |
241ceaf7 RS |
3534 | /* Put a buffer_switch_event in the buffer |
3535 | so that read_key_sequence will notice the new current buffer. */ | |
3536 | ||
a8015ab5 KH |
3537 | record_asynch_buffer_change () |
3538 | { | |
3539 | struct input_event event; | |
a30f0615 RS |
3540 | Lisp_Object tem; |
3541 | ||
a8015ab5 KH |
3542 | event.kind = buffer_switch_event; |
3543 | event.frame_or_window = Qnil; | |
241ceaf7 | 3544 | |
f65e6f7d | 3545 | #ifdef subprocesses |
a30f0615 RS |
3546 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3547 | The purpose of the event is to make read_key_sequence look up the | |
3548 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3549 | and the event could cause trouble by messing up (input-pending-p). */ | |
3550 | tem = Fwaiting_for_user_input_p (); | |
3551 | if (NILP (tem)) | |
3552 | return; | |
f65e6f7d RS |
3553 | #else |
3554 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3555 | return; | |
3556 | #endif | |
a30f0615 | 3557 | |
241ceaf7 RS |
3558 | /* Make sure no interrupt happens while storing the event. */ |
3559 | #ifdef SIGIO | |
3560 | if (interrupt_input) | |
3561 | { | |
3562 | SIGMASKTYPE mask; | |
3563 | mask = sigblockx (SIGIO); | |
3564 | kbd_buffer_store_event (&event); | |
3565 | sigsetmask (mask); | |
3566 | } | |
3567 | else | |
3568 | #endif | |
3569 | { | |
3570 | stop_polling (); | |
3571 | kbd_buffer_store_event (&event); | |
3572 | start_polling (); | |
3573 | } | |
a8015ab5 | 3574 | } |
284f4730 JB |
3575 | \f |
3576 | #ifndef VMS | |
3577 | ||
3578 | /* Read any terminal input already buffered up by the system | |
3579 | into the kbd_buffer, but do not wait. | |
3580 | ||
3581 | EXPECTED should be nonzero if the caller knows there is some input. | |
3582 | ||
3583 | Except on VMS, all input is read by this function. | |
3584 | If interrupt_input is nonzero, this function MUST be called | |
3585 | only when SIGIO is blocked. | |
3586 | ||
3587 | Returns the number of keyboard chars read, or -1 meaning | |
3588 | this is a bad time to try to read input. */ | |
3589 | ||
3590 | static int | |
3591 | read_avail_input (expected) | |
3592 | int expected; | |
3593 | { | |
3594 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3595 | register int i; | |
3596 | int nread; | |
3597 | ||
3598 | if (read_socket_hook) | |
3599 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
3600 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
3601 | expected, expected); | |
284f4730 JB |
3602 | else |
3603 | { | |
17270835 RS |
3604 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3605 | the kbd_buffer can really hold. That may prevent loss | |
3606 | of characters on some systems when input is stuffed at us. */ | |
3607 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3608 | int n_to_read; |
284f4730 | 3609 | |
58788063 | 3610 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
3611 | #ifdef WINDOWSNT |
3612 | return 0; | |
3613 | #else /* not WINDOWSNT */ | |
80e4aa30 | 3614 | #ifdef MSDOS |
58788063 RS |
3615 | n_to_read = dos_keysns (); |
3616 | if (n_to_read == 0) | |
3617 | return 0; | |
c3a2738c | 3618 | #else /* not MSDOS */ |
284f4730 JB |
3619 | #ifdef FIONREAD |
3620 | /* Find out how much input is available. */ | |
437f6112 | 3621 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3622 | /* Formerly simply reported no input, but that sometimes led to |
3623 | a failure of Emacs to terminate. | |
3624 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3625 | /* ??? Is it really right to send the signal just to this process |
3626 | rather than to the whole process group? | |
3627 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3628 | kill (getpid (), SIGHUP); |
58788063 | 3629 | if (n_to_read == 0) |
284f4730 | 3630 | return 0; |
58788063 RS |
3631 | if (n_to_read > sizeof cbuf) |
3632 | n_to_read = sizeof cbuf; | |
284f4730 | 3633 | #else /* no FIONREAD */ |
482952ef | 3634 | #if defined(USG) || defined(DGUX) |
284f4730 | 3635 | /* Read some input if available, but don't wait. */ |
58788063 | 3636 | n_to_read = sizeof cbuf; |
437f6112 | 3637 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
3638 | #else |
3639 | you lose; | |
3640 | #endif | |
3641 | #endif | |
80e4aa30 | 3642 | #endif /* not MSDOS */ |
bc536d84 | 3643 | #endif /* not WINDOWSNT */ |
284f4730 | 3644 | |
58788063 RS |
3645 | /* Now read; for one reason or another, this will not block. |
3646 | NREAD is set to the number of chars read. */ | |
9134775b | 3647 | do |
284f4730 | 3648 | { |
80e4aa30 RS |
3649 | #ifdef MSDOS |
3650 | cbuf[0] = dos_keyread(); | |
3651 | nread = 1; | |
3652 | #else | |
437f6112 | 3653 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 3654 | #endif |
762f2b92 | 3655 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3656 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3657 | This looks incorrect, but it isn't, because _BSD causes | |
3658 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3659 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3660 | if (nread == 0) |
80e4aa30 | 3661 | kill (0, SIGHUP); |
284f4730 | 3662 | #endif |
9134775b | 3663 | } |
791587ee KH |
3664 | while ( |
3665 | /* We used to retry the read if it was interrupted. | |
3666 | But this does the wrong thing when O_NDELAY causes | |
3667 | an EAGAIN error. Does anybody know of a situation | |
3668 | where a retry is actually needed? */ | |
3669 | #if 0 | |
3670 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3671 | #ifdef EFAULT |
9134775b | 3672 | || errno == EFAULT |
80e4aa30 | 3673 | #endif |
284f4730 | 3674 | #ifdef EBADSLT |
9134775b | 3675 | || errno == EBADSLT |
284f4730 | 3676 | #endif |
791587ee KH |
3677 | ) |
3678 | #else | |
3679 | 0 | |
3680 | #endif | |
3681 | ); | |
284f4730 JB |
3682 | |
3683 | #ifndef FIONREAD | |
02c2c53f | 3684 | #if defined (USG) || defined (DGUX) |
437f6112 | 3685 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 3686 | #endif /* USG or DGUX */ |
284f4730 JB |
3687 | #endif /* no FIONREAD */ |
3688 | for (i = 0; i < nread; i++) | |
3689 | { | |
3690 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3691 | buf[i].modifiers = 0; |
b04904fb | 3692 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3693 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3694 | if (meta_key != 2) |
3695 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
3696 | |
3697 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 3698 | #ifdef MULTI_FRAME |
18cd2eeb | 3699 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
3700 | #else |
3701 | buf[i].frame_or_window = Qnil; | |
3702 | #endif | |
284f4730 JB |
3703 | } |
3704 | } | |
3705 | ||
3706 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3707 | for (i = 0; i < nread; i++) | |
3708 | { | |
3709 | kbd_buffer_store_event (&buf[i]); | |
3710 | /* Don't look at input that follows a C-g too closely. | |
3711 | This reduces lossage due to autorepeat on C-g. */ | |
3712 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 3713 | && buf[i].code == quit_char) |
284f4730 JB |
3714 | break; |
3715 | } | |
3716 | ||
3717 | return nread; | |
3718 | } | |
3719 | #endif /* not VMS */ | |
3720 | \f | |
3721 | #ifdef SIGIO /* for entire page */ | |
3722 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3723 | ||
2ce30ea2 | 3724 | SIGTYPE |
284f4730 JB |
3725 | input_available_signal (signo) |
3726 | int signo; | |
3727 | { | |
3728 | /* Must preserve main program's value of errno. */ | |
3729 | int old_errno = errno; | |
3730 | #ifdef BSD4_1 | |
3731 | extern int select_alarmed; | |
3732 | #endif | |
3733 | ||
3734 | #ifdef USG | |
3735 | /* USG systems forget handlers when they are used; | |
3736 | must reestablish each time */ | |
3737 | signal (signo, input_available_signal); | |
3738 | #endif /* USG */ | |
3739 | ||
3740 | #ifdef BSD4_1 | |
3741 | sigisheld (SIGIO); | |
3742 | #endif | |
3743 | ||
ffd56f97 JB |
3744 | if (input_available_clear_time) |
3745 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3746 | |
3747 | while (1) | |
3748 | { | |
3749 | int nread; | |
3750 | nread = read_avail_input (1); | |
3751 | /* -1 means it's not ok to read the input now. | |
3752 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3753 | 0 means there was no keyboard input available. */ | |
3754 | if (nread <= 0) | |
3755 | break; | |
3756 | ||
3757 | #ifdef BSD4_1 | |
3758 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3759 | #endif | |
3760 | } | |
3761 | ||
3762 | #ifdef BSD4_1 | |
3763 | sigfree (); | |
3764 | #endif | |
3765 | errno = old_errno; | |
3766 | } | |
3767 | #endif /* SIGIO */ | |
ad163903 JB |
3768 | |
3769 | /* Send ourselves a SIGIO. | |
3770 | ||
3771 | This function exists so that the UNBLOCK_INPUT macro in | |
3772 | blockinput.h can have some way to take care of input we put off | |
3773 | dealing with, without assuming that every file which uses | |
3774 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3775 | void | |
3776 | reinvoke_input_signal () | |
3777 | { | |
3778 | #ifdef SIGIO | |
3779 | kill (0, SIGIO); | |
3780 | #endif | |
3781 | } | |
3782 | ||
3783 | ||
284f4730 JB |
3784 | \f |
3785 | /* Return the prompt-string of a sparse keymap. | |
3786 | This is the first element which is a string. | |
3787 | Return nil if there is none. */ | |
3788 | ||
3789 | Lisp_Object | |
3790 | map_prompt (map) | |
3791 | Lisp_Object map; | |
3792 | { | |
3793 | while (CONSP (map)) | |
3794 | { | |
3795 | register Lisp_Object tem; | |
3796 | tem = Fcar (map); | |
8c18cbfb | 3797 | if (STRINGP (tem)) |
284f4730 JB |
3798 | return tem; |
3799 | map = Fcdr (map); | |
3800 | } | |
3801 | return Qnil; | |
3802 | } | |
3803 | ||
b7c49376 RS |
3804 | static void menu_bar_item (); |
3805 | static void menu_bar_one_keymap (); | |
3806 | ||
3807 | /* These variables hold the vector under construction within | |
3808 | menu_bar_items and its subroutines, and the current index | |
3809 | for storing into that vector. */ | |
3810 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 3811 | static int menu_bar_items_index; |
5ec75a55 | 3812 | |
b7c49376 RS |
3813 | /* Return a vector of menu items for a menu bar, appropriate |
3814 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 3815 | KEY STRING MAPLIST. |
b7c49376 RS |
3816 | |
3817 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
3818 | |
3819 | Lisp_Object | |
b7c49376 RS |
3820 | menu_bar_items (old) |
3821 | Lisp_Object old; | |
5ec75a55 RS |
3822 | { |
3823 | /* The number of keymaps we're scanning right now, and the number of | |
3824 | keymaps we have allocated space for. */ | |
3825 | int nmaps; | |
3826 | ||
3827 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3828 | in the current keymaps, or nil where it is not a prefix. */ | |
3829 | Lisp_Object *maps; | |
3830 | ||
9f9c0e27 | 3831 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3832 | |
3833 | Lisp_Object result; | |
3834 | ||
3835 | int mapno; | |
47d319aa | 3836 | Lisp_Object oquit; |
5ec75a55 | 3837 | |
b7c49376 RS |
3838 | int i; |
3839 | ||
3840 | struct gcpro gcpro1; | |
3841 | ||
db60d856 JB |
3842 | /* In order to build the menus, we need to call the keymap |
3843 | accessors. They all call QUIT. But this function is called | |
3844 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3845 | quitting while building the menus. |
3846 | We do this instead of specbind because (1) errors will clear it anyway | |
3847 | and (2) this avoids risk of specpdl overflow. */ | |
3848 | oquit = Vinhibit_quit; | |
3849 | Vinhibit_quit = Qt; | |
db60d856 | 3850 | |
b7c49376 RS |
3851 | if (!NILP (old)) |
3852 | menu_bar_items_vector = old; | |
3853 | else | |
3854 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
3855 | menu_bar_items_index = 0; | |
3856 | ||
3857 | GCPRO1 (menu_bar_items_vector); | |
3858 | ||
5ec75a55 RS |
3859 | /* Build our list of keymaps. |
3860 | If we recognize a function key and replace its escape sequence in | |
3861 | keybuf with its symbol, or if the sequence starts with a mouse | |
3862 | click and we need to switch buffers, we jump back here to rebuild | |
3863 | the initial keymaps from the current buffer. */ | |
3864 | { | |
3865 | Lisp_Object *tmaps; | |
3866 | ||
d0a49716 RS |
3867 | /* Should overriding-local-map apply, here? */ |
3868 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 3869 | { |
d0a49716 RS |
3870 | if (NILP (Voverriding_local_map)) |
3871 | { | |
3872 | /* Yes, and it is nil. Use just global map. */ | |
3873 | nmaps = 1; | |
3874 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3875 | } | |
3876 | else | |
3877 | { | |
3878 | /* Yes, and it is non-nil. Use it and the global map. */ | |
3879 | nmaps = 2; | |
3880 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3881 | maps[0] = Voverriding_local_map; | |
3882 | } | |
9dd3131c RS |
3883 | } |
3884 | else | |
3885 | { | |
d0a49716 | 3886 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
3887 | nmaps = current_minor_maps (0, &tmaps) + 2; |
3888 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3889 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 3890 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 3891 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 3892 | #else |
9dd3131c | 3893 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3894 | #endif |
9dd3131c | 3895 | } |
7e6992e0 | 3896 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3897 | } |
3898 | ||
3899 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3900 | ||
3901 | result = Qnil; | |
3902 | ||
e58aa385 | 3903 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3904 | { |
3905 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3906 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3907 | else |
3908 | def = Qnil; | |
3909 | ||
3910 | tem = Fkeymapp (def); | |
3911 | if (!NILP (tem)) | |
b7c49376 | 3912 | menu_bar_one_keymap (def); |
5ec75a55 RS |
3913 | } |
3914 | ||
b7c49376 RS |
3915 | /* Move to the end those items that should be at the end. */ |
3916 | ||
9f9c0e27 RS |
3917 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
3918 | { | |
b7c49376 RS |
3919 | int i; |
3920 | int end = menu_bar_items_index; | |
3921 | ||
3922 | for (i = 0; i < end; i += 3) | |
3923 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3924 | { | |
0301268e RS |
3925 | Lisp_Object tem0, tem1, tem2; |
3926 | /* Move the item at index I to the end, | |
3927 | shifting all the others forward. */ | |
3928 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
3929 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
3930 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3931 | if (end > i + 3) | |
3932 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3933 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3934 | (end - i - 3) * sizeof (Lisp_Object)); | |
3935 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
3936 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
3937 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
3938 | break; | |
b7c49376 RS |
3939 | } |
3940 | } | |
9f9c0e27 | 3941 | |
b7c49376 RS |
3942 | /* Add nil, nil, nil at the end. */ |
3943 | i = menu_bar_items_index; | |
3944 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3945 | { | |
3946 | Lisp_Object tem; | |
3947 | int newsize = 2 * i; | |
3948 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3949 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3950 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3951 | menu_bar_items_vector = tem; | |
9f9c0e27 | 3952 | } |
b7c49376 RS |
3953 | /* Add this item. */ |
3954 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3955 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3956 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3957 | menu_bar_items_index = i; | |
a73c5e29 | 3958 | |
47d319aa | 3959 | Vinhibit_quit = oquit; |
b7c49376 RS |
3960 | UNGCPRO; |
3961 | return menu_bar_items_vector; | |
5ec75a55 RS |
3962 | } |
3963 | \f | |
3964 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 3965 | in menu_bar_items_vector. */ |
5ec75a55 | 3966 | |
b7c49376 RS |
3967 | static void |
3968 | menu_bar_one_keymap (keymap) | |
3969 | Lisp_Object keymap; | |
5ec75a55 RS |
3970 | { |
3971 | Lisp_Object tail, item, key, binding, item_string, table; | |
3972 | ||
3973 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 3974 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
3975 | { |
3976 | item = XCONS (tail)->car; | |
8c18cbfb | 3977 | if (CONSP (item)) |
5ec75a55 RS |
3978 | { |
3979 | key = XCONS (item)->car; | |
3980 | binding = XCONS (item)->cdr; | |
8c18cbfb | 3981 | if (CONSP (binding)) |
5ec75a55 RS |
3982 | { |
3983 | item_string = XCONS (binding)->car; | |
8c18cbfb | 3984 | if (STRINGP (item_string)) |
b7c49376 | 3985 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3986 | } |
e58aa385 | 3987 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3988 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 3989 | } |
8c18cbfb | 3990 | else if (VECTORP (item)) |
5ec75a55 RS |
3991 | { |
3992 | /* Loop over the char values represented in the vector. */ | |
3993 | int len = XVECTOR (item)->size; | |
3994 | int c; | |
3995 | for (c = 0; c < len; c++) | |
3996 | { | |
3997 | Lisp_Object character; | |
bb9e9bed | 3998 | XSETFASTINT (character, c); |
5ec75a55 | 3999 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4000 | if (CONSP (binding)) |
5ec75a55 RS |
4001 | { |
4002 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4003 | if (STRINGP (item_string)) |
b7c49376 | 4004 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4005 | } |
e58aa385 | 4006 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4007 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4008 | } |
4009 | } | |
4010 | } | |
5ec75a55 RS |
4011 | } |
4012 | ||
047a8ea7 RS |
4013 | /* This is used as the handler when calling internal_condition_case_1. */ |
4014 | ||
4015 | static Lisp_Object | |
4016 | menu_bar_item_1 (arg) | |
4017 | Lisp_Object arg; | |
4018 | { | |
4019 | return Qnil; | |
4020 | } | |
4021 | ||
f5e09c8b RS |
4022 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4023 | If there's already an item for KEY, add this DEF to it. */ | |
4024 | ||
b7c49376 RS |
4025 | static void |
4026 | menu_bar_item (key, item_string, def) | |
4027 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4028 | { |
e58aa385 | 4029 | Lisp_Object tem; |
5ec75a55 | 4030 | Lisp_Object enabled; |
b7c49376 | 4031 | int i; |
5ec75a55 | 4032 | |
e58aa385 RS |
4033 | if (EQ (def, Qundefined)) |
4034 | { | |
f5e09c8b | 4035 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4036 | discard any previously made menu bar item. */ |
b7c49376 RS |
4037 | |
4038 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4039 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4040 | { | |
4041 | if (menu_bar_items_index > i + 3) | |
4042 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4043 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4044 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4045 | menu_bar_items_index -= 3; | |
4046 | return; | |
4047 | } | |
8aa034e1 RS |
4048 | |
4049 | /* If there's no definition for this key yet, | |
4050 | just ignore `undefined'. */ | |
4051 | return; | |
e58aa385 RS |
4052 | } |
4053 | ||
5ec75a55 RS |
4054 | /* See if this entry is enabled. */ |
4055 | enabled = Qt; | |
4056 | ||
8c18cbfb | 4057 | if (SYMBOLP (def)) |
5ec75a55 RS |
4058 | { |
4059 | /* No property, or nil, means enable. | |
4060 | Otherwise, enable if value is not nil. */ | |
4061 | tem = Fget (def, Qmenu_enable); | |
4062 | if (!NILP (tem)) | |
047a8ea7 RS |
4063 | /* (condition-case nil (eval tem) |
4064 | (error nil)) */ | |
4065 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4066 | menu_bar_item_1); | |
5ec75a55 RS |
4067 | } |
4068 | ||
b7c49376 RS |
4069 | /* Ignore this item if it's not enabled. */ |
4070 | if (NILP (enabled)) | |
4071 | return; | |
5ec75a55 | 4072 | |
f5e09c8b | 4073 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4074 | for (i = 0; i < menu_bar_items_index; i += 3) |
4075 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4076 | break; | |
4077 | ||
f5e09c8b | 4078 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4079 | if (i == menu_bar_items_index) |
4080 | { | |
4081 | /* If vector is too small, get a bigger one. */ | |
4082 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4083 | { | |
4084 | Lisp_Object tem; | |
4085 | int newsize = 2 * i; | |
4086 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4087 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4088 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4089 | menu_bar_items_vector = tem; | |
4090 | } | |
4091 | /* Add this item. */ | |
4092 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4093 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4094 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4095 | menu_bar_items_index = i; |
4096 | } | |
f5e09c8b RS |
4097 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4098 | else | |
4099 | { | |
4100 | Lisp_Object old; | |
4101 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4102 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4103 | } | |
5ec75a55 RS |
4104 | } |
4105 | \f | |
dcc408a0 RS |
4106 | /* Read a character using menus based on maps in the array MAPS. |
4107 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4108 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4109 | |
4110 | PREV_EVENT is the previous input event, or nil if we are reading | |
4111 | the first event of a key sequence. | |
4112 | ||
6569cc8d JB |
4113 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4114 | if we used a mouse menu to read the input, or zero otherwise. If | |
4115 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4116 | |
4117 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4118 | and the strings associated with various map elements. |
4119 | ||
4120 | This can be done with X menus or with menus put in the minibuf. | |
4121 | These are done in different ways, depending on how the input will be read. | |
4122 | Menus using X are done after auto-saving in read-char, getting the input | |
4123 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4124 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4125 | |
7617111f | 4126 | static Lisp_Object |
8150596a | 4127 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4128 | int nmaps; |
4129 | Lisp_Object *maps; | |
4130 | Lisp_Object prev_event; | |
4131 | int *used_mouse_menu; | |
284f4730 | 4132 | { |
7d6de002 RS |
4133 | int mapno; |
4134 | register Lisp_Object name; | |
7d6de002 RS |
4135 | Lisp_Object rest, vector; |
4136 | ||
6569cc8d JB |
4137 | if (used_mouse_menu) |
4138 | *used_mouse_menu = 0; | |
284f4730 JB |
4139 | |
4140 | /* Use local over global Menu maps */ | |
4141 | ||
7d6de002 RS |
4142 | if (! menu_prompting) |
4143 | return Qnil; | |
4144 | ||
03361bcc RS |
4145 | /* Optionally disregard all but the global map. */ |
4146 | if (inhibit_local_menu_bar_menus) | |
4147 | { | |
4148 | maps += (nmaps - 1); | |
4149 | nmaps = 1; | |
4150 | } | |
4151 | ||
7d6de002 RS |
4152 | /* Get the menu name from the first map that has one (a prompt string). */ |
4153 | for (mapno = 0; mapno < nmaps; mapno++) | |
4154 | { | |
4155 | name = map_prompt (maps[mapno]); | |
4156 | if (!NILP (name)) | |
4157 | break; | |
4158 | } | |
284f4730 | 4159 | |
7d6de002 | 4160 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4161 | if (mapno >= nmaps) |
7d6de002 RS |
4162 | return Qnil; |
4163 | ||
87485d6f | 4164 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4165 | /* If we got to this point via a mouse click, |
4166 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4167 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4168 | { |
4169 | /* Display the menu and get the selection. */ | |
4170 | Lisp_Object *realmaps | |
4171 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4172 | Lisp_Object value; | |
4173 | int nmaps1 = 0; | |
4174 | ||
4175 | /* Use the maps that are not nil. */ | |
4176 | for (mapno = 0; mapno < nmaps; mapno++) | |
4177 | if (!NILP (maps[mapno])) | |
4178 | realmaps[nmaps1++] = maps[mapno]; | |
4179 | ||
4180 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4181 | if (CONSP (value)) |
4182 | { | |
4183 | /* If we got more than one event, put all but the first | |
4184 | onto this list to be read later. | |
4185 | Return just the first event now. */ | |
24597608 RS |
4186 | Vunread_command_events |
4187 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4188 | value = XCONS (value)->car; |
4189 | } | |
1c90c381 | 4190 | else if (NILP (value)) |
dcc408a0 | 4191 | value = Qt; |
6569cc8d JB |
4192 | if (used_mouse_menu) |
4193 | *used_mouse_menu = 1; | |
7d6de002 RS |
4194 | return value; |
4195 | } | |
87485d6f | 4196 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4197 | return Qnil ; |
4198 | } | |
4199 | ||
4200 | static Lisp_Object | |
24597608 | 4201 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4202 | int commandflag ; |
4203 | int nmaps; | |
4204 | Lisp_Object *maps; | |
4205 | { | |
4206 | int mapno; | |
4207 | register Lisp_Object name; | |
4208 | int nlength; | |
4209 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4210 | char *menu = (char *) alloca (width + 4); | |
4211 | int idx = -1; | |
9fdbfdf8 | 4212 | int nobindings = 1; |
8150596a RS |
4213 | Lisp_Object rest, vector; |
4214 | ||
4215 | if (! menu_prompting) | |
4216 | return Qnil; | |
4217 | ||
4218 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4219 | for (mapno = 0; mapno < nmaps; mapno++) | |
4220 | { | |
4221 | name = map_prompt (maps[mapno]); | |
4222 | if (!NILP (name)) | |
4223 | break; | |
4224 | } | |
4225 | ||
4226 | /* If we don't have any menus, just read a character normally. */ | |
4227 | if (mapno >= nmaps) | |
4228 | return Qnil; | |
284f4730 JB |
4229 | |
4230 | /* Prompt string always starts with map's prompt, and a space. */ | |
4231 | strcpy (menu, XSTRING (name)->data); | |
4232 | nlength = XSTRING (name)->size; | |
7d6de002 | 4233 | menu[nlength++] = ':'; |
284f4730 JB |
4234 | menu[nlength++] = ' '; |
4235 | menu[nlength] = 0; | |
4236 | ||
7d6de002 RS |
4237 | /* Start prompting at start of first map. */ |
4238 | mapno = 0; | |
4239 | rest = maps[mapno]; | |
284f4730 JB |
4240 | |
4241 | /* Present the documented bindings, a line at a time. */ | |
4242 | while (1) | |
4243 | { | |
4244 | int notfirst = 0; | |
4245 | int i = nlength; | |
4246 | Lisp_Object obj; | |
4247 | int ch; | |
8150596a | 4248 | int orig_defn_macro ; |
284f4730 | 4249 | |
284f4730 | 4250 | /* Loop over elements of map. */ |
7d6de002 | 4251 | while (i < width) |
284f4730 | 4252 | { |
7d6de002 | 4253 | Lisp_Object s, elt; |
284f4730 | 4254 | |
7d6de002 RS |
4255 | /* If reached end of map, start at beginning of next map. */ |
4256 | if (NILP (rest)) | |
4257 | { | |
4258 | mapno++; | |
4259 | /* At end of last map, wrap around to first map if just starting, | |
4260 | or end this line if already have something on it. */ | |
4261 | if (mapno == nmaps) | |
284f4730 | 4262 | { |
8150596a | 4263 | mapno = 0; |
40932d1a | 4264 | if (notfirst || nobindings) break; |
284f4730 | 4265 | } |
7d6de002 | 4266 | rest = maps[mapno]; |
284f4730 | 4267 | } |
7d6de002 RS |
4268 | |
4269 | /* Look at the next element of the map. */ | |
4270 | if (idx >= 0) | |
4271 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4272 | else |
7d6de002 RS |
4273 | elt = Fcar_safe (rest); |
4274 | ||
8c18cbfb | 4275 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4276 | { |
7d6de002 RS |
4277 | /* If we found a dense table in the keymap, |
4278 | advanced past it, but start scanning its contents. */ | |
4279 | rest = Fcdr_safe (rest); | |
4280 | vector = elt; | |
4281 | idx = 0; | |
284f4730 | 4282 | } |
7d6de002 RS |
4283 | else |
4284 | { | |
4285 | /* An ordinary element. */ | |
8150596a RS |
4286 | if ( idx < 0 ) |
4287 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4288 | else | |
4289 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4290 | if (!STRINGP (s)) |
7d6de002 RS |
4291 | /* Ignore the element if it has no prompt string. */ |
4292 | ; | |
4293 | /* If we have room for the prompt string, add it to this line. | |
4294 | If this is the first on the line, always add it. */ | |
8150596a | 4295 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4296 | || !notfirst) |
4297 | { | |
4298 | int thiswidth; | |
284f4730 | 4299 | |
7d6de002 RS |
4300 | /* Punctuate between strings. */ |
4301 | if (notfirst) | |
4302 | { | |
4303 | strcpy (menu + i, ", "); | |
4304 | i += 2; | |
4305 | } | |
4306 | notfirst = 1; | |
8150596a | 4307 | nobindings = 0 ; |
7d6de002 RS |
4308 | |
4309 | /* Add as much of string as fits. */ | |
4310 | thiswidth = XSTRING (s)->size; | |
4311 | if (thiswidth + i > width) | |
4312 | thiswidth = width - i; | |
4313 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4314 | i += thiswidth; | |
8150596a | 4315 | menu[i] = 0; |
7d6de002 RS |
4316 | } |
4317 | else | |
4318 | { | |
4319 | /* If this element does not fit, end the line now, | |
4320 | and save the element for the next line. */ | |
4321 | strcpy (menu + i, "..."); | |
4322 | break; | |
4323 | } | |
4324 | ||
4325 | /* Move past this element. */ | |
8150596a | 4326 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4327 | /* Handle reaching end of dense table. */ |
4328 | idx = -1; | |
4329 | if (idx >= 0) | |
4330 | idx++; | |
4331 | else | |
4332 | rest = Fcdr_safe (rest); | |
4333 | } | |
284f4730 JB |
4334 | } |
4335 | ||
4336 | /* Prompt with that and read response. */ | |
4337 | message1 (menu); | |
8150596a RS |
4338 | |
4339 | /* Make believe its not a keyboard macro in case the help char | |
4340 | is pressed. Help characters are not recorded because menu prompting | |
4341 | is not used on replay. | |
4342 | */ | |
4343 | orig_defn_macro = defining_kbd_macro ; | |
4344 | defining_kbd_macro = 0 ; | |
3cb81011 KH |
4345 | do |
4346 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4347 | while (BUFFERP (obj)); |
8150596a | 4348 | defining_kbd_macro = orig_defn_macro ; |
284f4730 | 4349 | |
8c18cbfb | 4350 | if (!INTEGERP (obj)) |
284f4730 JB |
4351 | return obj; |
4352 | else | |
4353 | ch = XINT (obj); | |
4354 | ||
f4255cd1 | 4355 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4356 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4357 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a RS |
4358 | { |
4359 | if ( defining_kbd_macro ) | |
4360 | store_kbd_macro_char(obj) ; | |
4361 | return obj; | |
4362 | } | |
4363 | /* Help char - go round again */ | |
284f4730 JB |
4364 | } |
4365 | } | |
284f4730 JB |
4366 | \f |
4367 | /* Reading key sequences. */ | |
4368 | ||
4369 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4370 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4371 | keymap, or nil otherwise. Return the index of the first keymap in | |
4372 | which KEY has any binding, or NMAPS if no map has a binding. | |
4373 | ||
4374 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4375 | followed by the corresponding non-meta character. Keymaps in | |
4376 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4377 | NEXT. | |
4378 | ||
88cb0656 JB |
4379 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4380 | unmodified. | |
4381 | ||
284f4730 JB |
4382 | NEXT may == CURRENT. */ |
4383 | ||
4384 | static int | |
4e50f26a | 4385 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4386 | Lisp_Object key; |
4387 | Lisp_Object *current, *defs, *next; | |
4388 | int nmaps; | |
4389 | { | |
4390 | int i, first_binding; | |
4391 | ||
4392 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4393 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4394 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4395 | { |
4396 | for (i = 0; i < nmaps; i++) | |
4397 | if (! NILP (current[i])) | |
4398 | { | |
cd21b839 | 4399 | next[i] = |
e74fbc70 | 4400 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4401 | |
4402 | /* Note that since we pass the resulting bindings through | |
4403 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4404 | disappear. */ | |
f4255cd1 | 4405 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4406 | } |
4407 | else | |
4408 | next[i] = Qnil; | |
4409 | ||
4410 | current = next; | |
18cd2eeb | 4411 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4412 | } |
4413 | ||
4414 | first_binding = nmaps; | |
4415 | for (i = nmaps - 1; i >= 0; i--) | |
4416 | { | |
4417 | if (! NILP (current[i])) | |
4418 | { | |
e74fbc70 | 4419 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4420 | if (! NILP (defs[i])) |
4421 | first_binding = i; | |
4422 | } | |
4423 | else | |
4424 | defs[i] = Qnil; | |
4425 | } | |
4426 | ||
284f4730 | 4427 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4428 | if (first_binding < nmaps) |
4429 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4430 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4431 | |
4432 | return first_binding; | |
4433 | } | |
4434 | ||
f4255cd1 JB |
4435 | /* Read a sequence of keys that ends with a non prefix character, |
4436 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4437 | Prompt with PROMPT. | |
284f4730 | 4438 | Return the length of the key sequence stored. |
dcc408a0 | 4439 | Return -1 if the user rejected a command menu. |
284f4730 | 4440 | |
f4255cd1 JB |
4441 | Echo starting immediately unless `prompt' is 0. |
4442 | ||
4443 | Where a key sequence ends depends on the currently active keymaps. | |
4444 | These include any minor mode keymaps active in the current buffer, | |
4445 | the current buffer's local map, and the global map. | |
4446 | ||
4447 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4448 | to see if some trailing subsequence might be the beginning of a | |
4449 | function key's sequence. If so, we try to read the whole function | |
4450 | key, and substitute its symbolic name into the key sequence. | |
4451 | ||
fbcd35bd JB |
4452 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4453 | `double-' events into similar click events, if that would make them | |
4454 | bound. We try to turn `triple-' events first into `double-' events, | |
4455 | then into clicks. | |
f4255cd1 JB |
4456 | |
4457 | If we get a mouse click in a mode line, vertical divider, or other | |
4458 | non-text area, we treat the click as if it were prefixed by the | |
4459 | symbol denoting that area - `mode-line', `vertical-line', or | |
4460 | whatever. | |
4461 | ||
4462 | If the sequence starts with a mouse click, we read the key sequence | |
4463 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4464 | |
f4255cd1 JB |
4465 | If the user switches frames in the midst of a key sequence, we put |
4466 | off the switch-frame event until later; the next call to | |
4467 | read_char will return it. */ | |
48e416d4 | 4468 | |
284f4730 JB |
4469 | static int |
4470 | read_key_sequence (keybuf, bufsize, prompt) | |
4471 | Lisp_Object *keybuf; | |
4472 | int bufsize; | |
84d91fda | 4473 | Lisp_Object prompt; |
284f4730 | 4474 | { |
f4255cd1 JB |
4475 | int count = specpdl_ptr - specpdl; |
4476 | ||
284f4730 JB |
4477 | /* How many keys there are in the current key sequence. */ |
4478 | int t; | |
4479 | ||
284f4730 JB |
4480 | /* The length of the echo buffer when we started reading, and |
4481 | the length of this_command_keys when we started reading. */ | |
4482 | int echo_start; | |
f4255cd1 | 4483 | int keys_start; |
284f4730 JB |
4484 | |
4485 | /* The number of keymaps we're scanning right now, and the number of | |
4486 | keymaps we have allocated space for. */ | |
4487 | int nmaps; | |
4488 | int nmaps_allocated = 0; | |
4489 | ||
284f4730 JB |
4490 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4491 | the current keymaps. */ | |
4492 | Lisp_Object *defs; | |
4493 | ||
f4255cd1 JB |
4494 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4495 | in the current keymaps, or nil where it is not a prefix. */ | |
4496 | Lisp_Object *submaps; | |
4497 | ||
4498 | /* The index in defs[] of the first keymap that has a binding for | |
4499 | this key sequence. In other words, the lowest i such that | |
4500 | defs[i] is non-nil. */ | |
284f4730 JB |
4501 | int first_binding; |
4502 | ||
f4255cd1 | 4503 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4504 | input key. |
4505 | ||
4506 | We use this to recover after recognizing a function key. Once we | |
4507 | realize that a suffix of the current key sequence is actually a | |
4508 | function key's escape sequence, we replace the suffix with the | |
4509 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4510 | contains a new and different key sequence, so the echo area, |
4511 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4512 | this situation, we set mock_input to t, set t to 0, and jump to | |
4513 | restart_sequence; the loop will read keys from keybuf up until | |
4514 | mock_input, thus rebuilding the state; and then it will resume | |
4515 | reading characters from the keyboard. */ | |
284f4730 JB |
4516 | int mock_input = 0; |
4517 | ||
253598e4 | 4518 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4519 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4520 | and fkey_map is its binding. | |
253598e4 | 4521 | |
f4255cd1 JB |
4522 | These might be > t, indicating that all function key scanning |
4523 | should hold off until t reaches them. We do this when we've just | |
4524 | recognized a function key, to avoid searching for the function | |
4525 | key's again in Vfunction_key_map. */ | |
284f4730 | 4526 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4527 | Lisp_Object fkey_map; |
284f4730 | 4528 | |
a612e298 RS |
4529 | /* Likewise, for key_translation_map. */ |
4530 | int keytran_start = 0, keytran_end = 0; | |
4531 | Lisp_Object keytran_map; | |
4532 | ||
cd21b839 JB |
4533 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4534 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4535 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4536 | |
51763820 BF |
4537 | /* See the comment below... */ |
4538 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4539 | Lisp_Object first_event; |
51763820 | 4540 | #endif |
4efda7dd | 4541 | |
bc536d84 RS |
4542 | /* Gets around Microsoft compiler limitations. */ |
4543 | int dummyFlag = 0; | |
4544 | ||
3b9189f8 RS |
4545 | struct buffer *starting_buffer; |
4546 | ||
e9bf89a0 RS |
4547 | /* Nonzero if we seem to have got the beginning of a binding |
4548 | in function_key_map. */ | |
4549 | int function_key_possible = 0; | |
00a78037 | 4550 | int key_translation_possible = 0; |
e9bf89a0 | 4551 | |
4efda7dd RS |
4552 | int junk; |
4553 | ||
4554 | last_nonmenu_event = Qnil; | |
4555 | ||
4556 | delayed_switch_frame = Qnil; | |
4557 | fkey_map = Vfunction_key_map; | |
a612e298 | 4558 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4559 | |
a612e298 | 4560 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4561 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4562 | fkey_start = fkey_end = bufsize + 1; | |
4563 | ||
a612e298 RS |
4564 | /* If there is no key-translation-map, turn off scanning. */ |
4565 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4566 | keytran_start = keytran_end = bufsize + 1; | |
4567 | ||
284f4730 JB |
4568 | if (INTERACTIVE) |
4569 | { | |
84d91fda RS |
4570 | if (!NILP (prompt)) |
4571 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4572 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4573 | /* This doesn't put in a dash if the echo buffer is empty, so |
4574 | you don't always see a dash hanging out in the minibuffer. */ | |
4575 | echo_dash (); | |
284f4730 JB |
4576 | } |
4577 | ||
f4255cd1 JB |
4578 | /* Record the initial state of the echo area and this_command_keys; |
4579 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4580 | if (INTERACTIVE) |
f4255cd1 JB |
4581 | echo_start = echo_length (); |
4582 | keys_start = this_command_key_count; | |
0a7f1fc0 | 4583 | |
51763820 BF |
4584 | #if defined (GOBBLE_FIRST_EVENT) |
4585 | /* This doesn't quite work, because some of the things that read_char | |
4586 | does cannot safely be bypassed. It seems too risky to try to make | |
4587 | this work right. */ | |
4588 | ||
4efda7dd RS |
4589 | /* Read the first char of the sequence specially, before setting |
4590 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4591 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4592 | &junk); |
51763820 | 4593 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4594 | |
7b4aedb9 JB |
4595 | /* We jump here when the key sequence has been thoroughly changed, and |
4596 | we need to rescan it starting from the beginning. When we jump here, | |
4597 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4598 | replay_sequence: |
7b4aedb9 | 4599 | |
3b9189f8 | 4600 | starting_buffer = current_buffer; |
e9bf89a0 | 4601 | function_key_possible = 0; |
00a78037 | 4602 | key_translation_possible = 0; |
3b9189f8 | 4603 | |
f4255cd1 | 4604 | /* Build our list of keymaps. |
07d2b8de JB |
4605 | If we recognize a function key and replace its escape sequence in |
4606 | keybuf with its symbol, or if the sequence starts with a mouse | |
4607 | click and we need to switch buffers, we jump back here to rebuild | |
4608 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4609 | { |
4610 | Lisp_Object *maps; | |
4611 | ||
9dd3131c | 4612 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4613 | { |
9dd3131c RS |
4614 | nmaps = 2; |
4615 | if (nmaps > nmaps_allocated) | |
4616 | { | |
4617 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4618 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4619 | nmaps_allocated = nmaps; | |
4620 | } | |
4621 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4622 | } |
9dd3131c RS |
4623 | else |
4624 | { | |
4625 | nmaps = current_minor_maps (0, &maps) + 2; | |
4626 | if (nmaps > nmaps_allocated) | |
4627 | { | |
4628 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4629 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4630 | nmaps_allocated = nmaps; | |
4631 | } | |
4632 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4633 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4634 | submaps[nmaps-2] = get_local_map (PT, current_buffer); |
497ba7a1 | 4635 | #else |
9dd3131c | 4636 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4637 | #endif |
9dd3131c | 4638 | } |
7e6992e0 | 4639 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4640 | } |
4641 | ||
4642 | /* Find an accurate initial value for first_binding. */ | |
4643 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4644 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4645 | break; |
4646 | ||
3b9189f8 | 4647 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4648 | t = 0; |
4649 | ||
4650 | /* These are no-ops the first time through, but if we restart, they | |
4651 | revert the echo area and this_command_keys to their original state. */ | |
4652 | this_command_key_count = keys_start; | |
40932d1a | 4653 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
4654 | echo_truncate (echo_start); |
4655 | ||
cca310da JB |
4656 | /* If the best binding for the current key sequence is a keymap, or |
4657 | we may be looking at a function key's escape sequence, keep on | |
4658 | reading. */ | |
253598e4 | 4659 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4660 | || (first_binding >= nmaps |
4661 | && fkey_start < t | |
4662 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 4663 | && mock_input <= fkey_start) |
00a78037 | 4664 | || (keytran_start < t && key_translation_possible) |
e9bf89a0 RS |
4665 | /* Don't return in the middle of a possible function key sequence, |
4666 | if the only bindings we found were via case conversion. | |
4667 | Thus, if ESC O a has a function-key-map translation | |
4668 | and ESC o has a binding, don't return after ESC O, | |
4669 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 4670 | ) |
284f4730 JB |
4671 | { |
4672 | Lisp_Object key; | |
7d6de002 | 4673 | int used_mouse_menu = 0; |
284f4730 | 4674 | |
7b4aedb9 JB |
4675 | /* Where the last real key started. If we need to throw away a |
4676 | key that has expanded into more than one element of keybuf | |
4677 | (say, a mouse click on the mode line which is being treated | |
4678 | as [mode-line (mouse-...)], then we backtrack to this point | |
4679 | of keybuf. */ | |
4680 | int last_real_key_start; | |
4681 | ||
0a7f1fc0 JB |
4682 | /* These variables are analogous to echo_start and keys_start; |
4683 | while those allow us to restart the entire key sequence, | |
4684 | echo_local_start and keys_local_start allow us to throw away | |
4685 | just one key. */ | |
f4255cd1 JB |
4686 | int echo_local_start, keys_local_start, local_first_binding; |
4687 | ||
284f4730 JB |
4688 | if (t >= bufsize) |
4689 | error ("key sequence too long"); | |
4690 | ||
f4255cd1 JB |
4691 | if (INTERACTIVE) |
4692 | echo_local_start = echo_length (); | |
4693 | keys_local_start = this_command_key_count; | |
4694 | local_first_binding = first_binding; | |
4695 | ||
4696 | replay_key: | |
0a7f1fc0 | 4697 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4698 | jumped back up to replay_key; in that case, these restore the |
4699 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4700 | loop. */ |
40932d1a | 4701 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4702 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4703 | this_command_key_count = keys_local_start; |
4704 | first_binding = local_first_binding; | |
4705 | ||
7e85b935 RS |
4706 | /* By default, assume each event is "real". */ |
4707 | last_real_key_start = t; | |
4708 | ||
f4255cd1 | 4709 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4710 | if (t < mock_input) |
4711 | { | |
4712 | key = keybuf[t]; | |
4713 | add_command_key (key); | |
a98ea3f9 RS |
4714 | if (echo_keystrokes) |
4715 | echo_char (key); | |
284f4730 | 4716 | } |
253598e4 JB |
4717 | |
4718 | /* If not, we should actually read a character. */ | |
284f4730 JB |
4719 | else |
4720 | { | |
a6d53864 RS |
4721 | struct buffer *buf = current_buffer; |
4722 | ||
84d91fda | 4723 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
a6d53864 | 4724 | &used_mouse_menu); |
284f4730 | 4725 | |
dcc408a0 RS |
4726 | /* read_char returns t when it shows a menu and the user rejects it. |
4727 | Just return -1. */ | |
4728 | if (EQ (key, Qt)) | |
4729 | return -1; | |
4730 | ||
f4255cd1 | 4731 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
4732 | Emacs 18 handles this by returning immediately with a |
4733 | zero, so that's what we'll do. */ | |
8c18cbfb | 4734 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 4735 | { |
f4255cd1 | 4736 | t = 0; |
bc536d84 RS |
4737 | /* The Microsoft C compiler can't handle the goto that |
4738 | would go here. */ | |
4739 | dummyFlag = 1; | |
4740 | break; | |
cd21b839 | 4741 | } |
284f4730 | 4742 | |
3cb81011 KH |
4743 | /* If the current buffer has been changed from under us, the |
4744 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 4745 | if (BUFFERP (key)) |
3cb81011 KH |
4746 | { |
4747 | mock_input = t; | |
4748 | goto replay_sequence; | |
4749 | } | |
4750 | ||
3b9189f8 RS |
4751 | /* If we have a quit that was typed in another frame, and |
4752 | quit_throw_to_read_char switched buffers, | |
4753 | replay to get the right keymap. */ | |
9343ab07 | 4754 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
4755 | { |
4756 | keybuf[t++] = key; | |
4757 | mock_input = t; | |
4758 | Vquit_flag = Qnil; | |
4759 | goto replay_sequence; | |
4760 | } | |
3cb81011 | 4761 | |
284f4730 | 4762 | Vquit_flag = Qnil; |
7e85b935 | 4763 | } |
284f4730 | 4764 | |
7e85b935 RS |
4765 | /* Clicks in non-text areas get prefixed by the symbol |
4766 | in their CHAR-ADDRESS field. For example, a click on | |
4767 | the mode line is prefixed by the symbol `mode-line'. | |
4768 | ||
4769 | Furthermore, key sequences beginning with mouse clicks | |
4770 | are read using the keymaps of the buffer clicked on, not | |
4771 | the current buffer. So we may have to switch the buffer | |
4772 | here. | |
4773 | ||
4774 | When we turn one event into two events, we must make sure | |
4775 | that neither of the two looks like the original--so that, | |
4776 | if we replay the events, they won't be expanded again. | |
4777 | If not for this, such reexpansion could happen either here | |
4778 | or when user programs play with this-command-keys. */ | |
4779 | if (EVENT_HAS_PARAMETERS (key)) | |
4780 | { | |
9b8eb840 | 4781 | Lisp_Object kind; |
cca310da | 4782 | |
9b8eb840 | 4783 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 4784 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 4785 | { |
9b8eb840 | 4786 | Lisp_Object window, posn; |
f4255cd1 | 4787 | |
9b8eb840 KH |
4788 | window = POSN_WINDOW (EVENT_START (key)); |
4789 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 4790 | if (CONSP (posn)) |
0a7f1fc0 | 4791 | { |
7e85b935 RS |
4792 | /* We're looking at the second event of a |
4793 | sequence which we expanded before. Set | |
4794 | last_real_key_start appropriately. */ | |
4795 | if (t > 0) | |
4796 | last_real_key_start = t - 1; | |
cd21b839 | 4797 | } |
7e85b935 RS |
4798 | |
4799 | /* Key sequences beginning with mouse clicks are | |
4800 | read using the keymaps in the buffer clicked on, | |
4801 | not the current buffer. If we're at the | |
4802 | beginning of a key sequence, switch buffers. */ | |
4803 | if (last_real_key_start == 0 | |
8c18cbfb KH |
4804 | && WINDOWP (window) |
4805 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 4806 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 4807 | { |
7e85b935 RS |
4808 | keybuf[t] = key; |
4809 | mock_input = t + 1; | |
4810 | ||
4811 | /* Arrange to go back to the original buffer once we're | |
4812 | done reading the key sequence. Note that we can't | |
4813 | use save_excursion_{save,restore} here, because they | |
4814 | save point as well as the current buffer; we don't | |
4815 | want to save point, because redisplay may change it, | |
4816 | to accommodate a Fset_window_start or something. We | |
4817 | don't want to do this at the top of the function, | |
4818 | because we may get input from a subprocess which | |
4819 | wants to change the selected window and stuff (say, | |
4820 | emacsclient). */ | |
4821 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4822 | ||
4823 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
4824 | goto replay_sequence; | |
0a7f1fc0 | 4825 | } |
8c18cbfb | 4826 | else if (SYMBOLP (posn)) |
5ec75a55 | 4827 | { |
7e85b935 RS |
4828 | /* Expand mode-line and scroll-bar events into two events: |
4829 | use posn as a fake prefix key. */ | |
5ec75a55 | 4830 | |
7e85b935 RS |
4831 | if (t + 1 >= bufsize) |
4832 | error ("key sequence too long"); | |
4833 | keybuf[t] = posn; | |
4834 | keybuf[t+1] = key; | |
4835 | mock_input = t + 2; | |
4836 | ||
4837 | /* Zap the position in key, so we know that we've | |
4838 | expanded it, and don't try to do so again. */ | |
4839 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4840 | = Fcons (posn, Qnil); | |
4841 | goto replay_key; | |
5ec75a55 | 4842 | } |
0a7f1fc0 | 4843 | } |
7e85b935 | 4844 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4845 | { |
7e85b935 RS |
4846 | /* If we're at the beginning of a key sequence, go |
4847 | ahead and return this event. If we're in the | |
4848 | midst of a key sequence, delay it until the end. */ | |
4849 | if (t > 0) | |
4850 | { | |
4851 | delayed_switch_frame = key; | |
4852 | goto replay_key; | |
4853 | } | |
4854 | } | |
7a80a6f6 RS |
4855 | else if (CONSP (XCONS (key)->cdr) |
4856 | && CONSP (EVENT_START (key)) | |
4857 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 4858 | { |
9b8eb840 | 4859 | Lisp_Object posn; |
7e85b935 | 4860 | |
9b8eb840 | 4861 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
4862 | /* Handle menu-bar events: |
4863 | insert the dummy prefix event `menu-bar'. */ | |
4864 | if (EQ (posn, Qmenu_bar)) | |
4865 | { | |
4866 | if (t + 1 >= bufsize) | |
4867 | error ("key sequence too long"); | |
4868 | /* Run the Lucid hook. */ | |
88ce066e RS |
4869 | if (!NILP (Vrun_hooks)) |
4870 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
4871 | /* If it has changed current-menubar from previous value, |
4872 | really recompute the menubar from the value. */ | |
4873 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
4874 | call0 (Qrecompute_lucid_menubar); | |
4875 | keybuf[t] = posn; | |
4876 | keybuf[t+1] = key; | |
4877 | ||
4878 | /* Zap the position in key, so we know that we've | |
4879 | expanded it, and don't try to do so again. */ | |
4880 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4881 | = Fcons (posn, Qnil); | |
4882 | ||
4883 | mock_input = t + 2; | |
4884 | goto replay_sequence; | |
4885 | } | |
8c18cbfb | 4886 | else if (CONSP (posn)) |
7e85b935 RS |
4887 | { |
4888 | /* We're looking at the second event of a | |
4889 | sequence which we expanded before. Set | |
4890 | last_real_key_start appropriately. */ | |
4891 | if (last_real_key_start == t && t > 0) | |
4892 | last_real_key_start = t - 1; | |
4893 | } | |
a6d53864 | 4894 | } |
284f4730 | 4895 | } |
f4255cd1 JB |
4896 | |
4897 | /* We have finally decided that KEY is something we might want | |
4898 | to look up. */ | |
284f4730 JB |
4899 | first_binding = (follow_key (key, |
4900 | nmaps - first_binding, | |
253598e4 | 4901 | submaps + first_binding, |
284f4730 | 4902 | defs + first_binding, |
4e50f26a | 4903 | submaps + first_binding) |
284f4730 | 4904 | + first_binding); |
0a7f1fc0 | 4905 | |
f4255cd1 | 4906 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
4907 | if (first_binding >= nmaps) |
4908 | { | |
9b8eb840 | 4909 | Lisp_Object head; |
0a7f1fc0 | 4910 | |
9b8eb840 | 4911 | head = EVENT_HEAD (key); |
7e85b935 RS |
4912 | if (EQ (head, Vhelp_char)) |
4913 | { | |
4914 | read_key_sequence_cmd = Vprefix_help_command; | |
4915 | keybuf[t++] = key; | |
4916 | last_nonmenu_event = key; | |
bc536d84 RS |
4917 | /* The Microsoft C compiler can't handle the goto that |
4918 | would go here. */ | |
4919 | dummyFlag = 1; | |
7e85b935 RS |
4920 | } |
4921 | ||
8c18cbfb | 4922 | if (SYMBOLP (head)) |
0a7f1fc0 | 4923 | { |
9b8eb840 KH |
4924 | Lisp_Object breakdown; |
4925 | int modifiers; | |
0a7f1fc0 | 4926 | |
9b8eb840 KH |
4927 | breakdown = parse_modifiers (head); |
4928 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
4929 | /* Attempt to reduce an unbound mouse event to a simpler |
4930 | event that is bound: | |
4931 | Drags reduce to clicks. | |
4932 | Double-clicks reduce to clicks. | |
4933 | Triple-clicks reduce to double-clicks, then to clicks. | |
4934 | Down-clicks are eliminated. | |
4935 | Double-downs reduce to downs, then are eliminated. | |
4936 | Triple-downs reduce to double-downs, then to downs, | |
4937 | then are eliminated. */ | |
4938 | if (modifiers & (down_modifier | drag_modifier | |
4939 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4940 | { |
559f9d04 RS |
4941 | while (modifiers & (down_modifier | drag_modifier |
4942 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
4943 | { |
4944 | Lisp_Object new_head, new_click; | |
4945 | if (modifiers & triple_modifier) | |
4946 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
4947 | else if (modifiers & double_modifier) |
4948 | modifiers &= ~double_modifier; | |
4949 | else if (modifiers & drag_modifier) | |
4950 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
4951 | else |
4952 | { | |
4953 | /* Dispose of this `down' event by simply jumping | |
4954 | back to replay_key, to get another event. | |
4955 | ||
4956 | Note that if this event came from mock input, | |
4957 | then just jumping back to replay_key will just | |
4958 | hand it to us again. So we have to wipe out any | |
4959 | mock input. | |
4960 | ||
4961 | We could delete keybuf[t] and shift everything | |
4962 | after that to the left by one spot, but we'd also | |
4963 | have to fix up any variable that points into | |
4964 | keybuf, and shifting isn't really necessary | |
4965 | anyway. | |
4966 | ||
4967 | Adding prefixes for non-textual mouse clicks | |
4968 | creates two characters of mock input, and both | |
4969 | must be thrown away. If we're only looking at | |
4970 | the prefix now, we can just jump back to | |
4971 | replay_key. On the other hand, if we've already | |
4972 | processed the prefix, and now the actual click | |
4973 | itself is giving us trouble, then we've lost the | |
4974 | state of the keymaps we want to backtrack to, and | |
4975 | we need to replay the whole sequence to rebuild | |
4976 | it. | |
4977 | ||
4978 | Beyond that, only function key expansion could | |
4979 | create more than two keys, but that should never | |
4980 | generate mouse events, so it's okay to zero | |
4981 | mock_input in that case too. | |
4982 | ||
4983 | Isn't this just the most wonderful code ever? */ | |
4984 | if (t == last_real_key_start) | |
4985 | { | |
4986 | mock_input = 0; | |
4987 | goto replay_key; | |
4988 | } | |
4989 | else | |
4990 | { | |
4991 | mock_input = last_real_key_start; | |
4992 | goto replay_sequence; | |
4993 | } | |
4994 | } | |
4995 | ||
27203ead RS |
4996 | new_head |
4997 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
4998 | new_click | |
4999 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5000 | |
5001 | /* Look for a binding for this new key. follow_key | |
5002 | promises that it didn't munge submaps the | |
5003 | last time we called it, since key was unbound. */ | |
27203ead RS |
5004 | first_binding |
5005 | = (follow_key (new_click, | |
5006 | nmaps - local_first_binding, | |
5007 | submaps + local_first_binding, | |
5008 | defs + local_first_binding, | |
4e50f26a | 5009 | submaps + local_first_binding) |
27203ead | 5010 | + local_first_binding); |
fbcd35bd JB |
5011 | |
5012 | /* If that click is bound, go for it. */ | |
5013 | if (first_binding < nmaps) | |
5014 | { | |
5015 | key = new_click; | |
5016 | break; | |
5017 | } | |
5018 | /* Otherwise, we'll leave key set to the drag event. */ | |
5019 | } | |
0a7f1fc0 JB |
5020 | } |
5021 | } | |
5022 | } | |
5023 | ||
284f4730 | 5024 | keybuf[t++] = key; |
7d6de002 RS |
5025 | /* Normally, last_nonmenu_event gets the previous key we read. |
5026 | But when a mouse popup menu is being used, | |
5027 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5028 | event that preceded the first level of menu. */ | |
5029 | if (!used_mouse_menu) | |
5030 | last_nonmenu_event = key; | |
284f4730 JB |
5031 | |
5032 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5033 | off the end of it. We only want to scan real keyboard input |
5034 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5035 | re-reading old events, don't examine it. */ |
4e50f26a | 5036 | if (first_binding >= nmaps |
253598e4 | 5037 | && t >= mock_input) |
284f4730 JB |
5038 | { |
5039 | Lisp_Object fkey_next; | |
5040 | ||
e9bf89a0 RS |
5041 | /* Continue scan from fkey_end until we find a bound suffix. |
5042 | If we fail, increment fkey_start | |
5043 | and start fkey_end from there. */ | |
284f4730 JB |
5044 | while (fkey_end < t) |
5045 | { | |
f4255cd1 JB |
5046 | Lisp_Object key; |
5047 | ||
5048 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5049 | /* Look up meta-characters by prefixing them |
5050 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5051 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5052 | { |
e74fbc70 RS |
5053 | fkey_next |
5054 | = get_keymap_1 | |
f4255cd1 | 5055 | (get_keyelt |
e74fbc70 | 5056 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5057 | 0, 1); |
bb9e9bed | 5058 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5059 | } |
067ffa38 JB |
5060 | else |
5061 | fkey_next = fkey_map; | |
5062 | ||
e74fbc70 RS |
5063 | fkey_next |
5064 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5065 | |
7a80a6f6 RS |
5066 | #if 0 /* I didn't turn this on, because it might cause trouble |
5067 | for the mapping of return into C-m and tab into C-i. */ | |
5068 | /* Optionally don't map function keys into other things. | |
5069 | This enables the user to redefine kp- keys easily. */ | |
5070 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5071 | fkey_next = Qnil; | |
5072 | #endif | |
5073 | ||
1abe6abe RS |
5074 | /* If the function key map gives a function, not an |
5075 | array, then call the function with no args and use | |
5076 | its value instead. */ | |
5077 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5078 | && fkey_end == t) | |
5079 | { | |
5080 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5081 | Lisp_Object tem; | |
5082 | tem = fkey_next; | |
5083 | ||
5084 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5085 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5086 | UNGCPRO; |
5087 | /* If the function returned something invalid, | |
5088 | barf--don't ignore it. | |
5089 | (To ignore it safely, we would need to gcpro a bunch of | |
5090 | other variables.) */ | |
5091 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5092 | error ("Function in function-key-map returns invalid key sequence"); | |
5093 | } | |
5094 | ||
e9bf89a0 RS |
5095 | function_key_possible = ! NILP (fkey_next); |
5096 | ||
85bc5181 | 5097 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5098 | function key map and it's a suffix of the current |
85bc5181 | 5099 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5100 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5101 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5102 | && fkey_end == t) |
5103 | { | |
2e864a76 | 5104 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5105 | |
5106 | t = fkey_start + len; | |
284f4730 JB |
5107 | if (t >= bufsize) |
5108 | error ("key sequence too long"); | |
5109 | ||
f5ea6163 JB |
5110 | if (VECTORP (fkey_next)) |
5111 | bcopy (XVECTOR (fkey_next)->contents, | |
5112 | keybuf + fkey_start, | |
5113 | (t - fkey_start) * sizeof (keybuf[0])); | |
5114 | else if (STRINGP (fkey_next)) | |
5115 | { | |
5116 | int i; | |
5117 | ||
5118 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5119 | XSETFASTINT (keybuf[fkey_start + i], |
5120 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5121 | } |
284f4730 JB |
5122 | |
5123 | mock_input = t; | |
5124 | fkey_start = fkey_end = t; | |
32e6d806 | 5125 | fkey_map = Vfunction_key_map; |
284f4730 | 5126 | |
00a78037 RS |
5127 | /* Do pass the results through key-translation-map. */ |
5128 | keytran_start = keytran_end = 0; | |
5129 | keytran_map = Vkey_translation_map; | |
5130 | ||
f4255cd1 | 5131 | goto replay_sequence; |
284f4730 JB |
5132 | } |
5133 | ||
f4255cd1 | 5134 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5135 | |
a764a753 JB |
5136 | /* If we no longer have a bound suffix, try a new positions for |
5137 | fkey_start. */ | |
284f4730 JB |
5138 | if (NILP (fkey_map)) |
5139 | { | |
5140 | fkey_end = ++fkey_start; | |
5141 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5142 | function_key_possible = 0; |
284f4730 JB |
5143 | } |
5144 | } | |
5145 | } | |
a612e298 RS |
5146 | |
5147 | /* Look for this sequence in key-translation-map. */ | |
5148 | { | |
5149 | Lisp_Object keytran_next; | |
5150 | ||
5151 | /* Scan from keytran_end until we find a bound suffix. */ | |
5152 | while (keytran_end < t) | |
5153 | { | |
5154 | Lisp_Object key; | |
5155 | ||
5156 | key = keybuf[keytran_end++]; | |
5157 | /* Look up meta-characters by prefixing them | |
5158 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5159 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5160 | { |
5161 | keytran_next | |
5162 | = get_keymap_1 | |
5163 | (get_keyelt | |
5164 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5165 | 0, 1); | |
bb9e9bed | 5166 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5167 | } |
5168 | else | |
5169 | keytran_next = keytran_map; | |
5170 | ||
5171 | keytran_next | |
5172 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5173 | ||
1abe6abe RS |
5174 | /* If the key translation map gives a function, not an |
5175 | array, then call the function with no args and use | |
5176 | its value instead. */ | |
5177 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5178 | && keytran_end == t) | |
5179 | { | |
5180 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5181 | Lisp_Object tem; | |
5182 | tem = keytran_next; | |
5183 | ||
40932d1a | 5184 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5185 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5186 | UNGCPRO; |
5187 | /* If the function returned something invalid, | |
5188 | barf--don't ignore it. | |
5189 | (To ignore it safely, we would need to gcpro a bunch of | |
5190 | other variables.) */ | |
5191 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5192 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5193 | } |
5194 | ||
00a78037 RS |
5195 | key_translation_possible = ! NILP (keytran_next); |
5196 | ||
a612e298 | 5197 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5198 | key translation map and it's a suffix of the current |
a612e298 RS |
5199 | sequence (i.e. keytran_end == t), replace it with |
5200 | the binding and restart with keytran_start at the end. */ | |
5201 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5202 | && keytran_end == t) | |
5203 | { | |
2e864a76 | 5204 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5205 | |
5206 | t = keytran_start + len; | |
5207 | if (t >= bufsize) | |
5208 | error ("key sequence too long"); | |
5209 | ||
5210 | if (VECTORP (keytran_next)) | |
5211 | bcopy (XVECTOR (keytran_next)->contents, | |
5212 | keybuf + keytran_start, | |
5213 | (t - keytran_start) * sizeof (keybuf[0])); | |
5214 | else if (STRINGP (keytran_next)) | |
5215 | { | |
5216 | int i; | |
5217 | ||
5218 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5219 | XSETFASTINT (keybuf[keytran_start + i], |
5220 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5221 | } |
5222 | ||
5223 | mock_input = t; | |
5224 | keytran_start = keytran_end = t; | |
5225 | keytran_map = Vkey_translation_map; | |
5226 | ||
00a78037 RS |
5227 | /* Don't pass the results of key-translation-map |
5228 | through function-key-map. */ | |
5229 | fkey_start = fkey_end = t; | |
5230 | fkey_map = Vkey_translation_map; | |
5231 | ||
a612e298 RS |
5232 | goto replay_sequence; |
5233 | } | |
5234 | ||
5235 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5236 | ||
5237 | /* If we no longer have a bound suffix, try a new positions for | |
5238 | keytran_start. */ | |
5239 | if (NILP (keytran_map)) | |
5240 | { | |
5241 | keytran_end = ++keytran_start; | |
5242 | keytran_map = Vkey_translation_map; | |
00a78037 | 5243 | key_translation_possible = 0; |
a612e298 RS |
5244 | } |
5245 | } | |
5246 | } | |
4e50f26a RS |
5247 | |
5248 | /* If KEY is not defined in any of the keymaps, | |
5249 | and cannot be part of a function key or translation, | |
5250 | and is an upper case letter | |
5251 | use the corresponding lower-case letter instead. */ | |
5252 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5253 | && ! key_translation_possible |
8c18cbfb | 5254 | && INTEGERP (key) |
4e50f26a RS |
5255 | && ((((XINT (key) & 0x3ffff) |
5256 | < XSTRING (current_buffer->downcase_table)->size) | |
5257 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5258 | || (XINT (key) & shift_modifier))) | |
5259 | { | |
5260 | if (XINT (key) & shift_modifier) | |
5261 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5262 | else | |
5263 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5264 | | (XINT (key) & ~0x3ffff))); | |
5265 | ||
5266 | keybuf[t - 1] = key; | |
5267 | mock_input = t; | |
5268 | goto replay_sequence; | |
5269 | } | |
ef8fd672 RS |
5270 | /* If KEY is not defined in any of the keymaps, |
5271 | and cannot be part of a function key or translation, | |
5272 | and is a shifted function key, | |
5273 | use the corresponding unshifted function key instead. */ | |
5274 | if (first_binding == nmaps && ! function_key_possible | |
5275 | && ! key_translation_possible | |
5276 | && SYMBOLP (key)) | |
5277 | { | |
5278 | Lisp_Object breakdown; | |
5279 | int modifiers; | |
5280 | ||
5281 | breakdown = parse_modifiers (key); | |
5282 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
5283 | if (modifiers & shift_modifier) | |
5284 | { | |
5285 | modifiers &= ~shift_modifier; | |
5286 | key = apply_modifiers (make_number (modifiers), | |
5287 | XCONS (breakdown)->car); | |
5288 | ||
5289 | keybuf[t - 1] = key; | |
5290 | mock_input = t; | |
5291 | goto replay_sequence; | |
5292 | } | |
5293 | } | |
284f4730 JB |
5294 | } |
5295 | ||
bc536d84 RS |
5296 | if (!dummyFlag) |
5297 | read_key_sequence_cmd = (first_binding < nmaps | |
5298 | ? defs[first_binding] | |
5299 | : Qnil); | |
284f4730 | 5300 | |
cd21b839 | 5301 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5302 | unbind_to (count, Qnil); |
07f76a14 JB |
5303 | |
5304 | /* Occasionally we fabricate events, perhaps by expanding something | |
5305 | according to function-key-map, or by adding a prefix symbol to a | |
5306 | mouse click in the scroll bar or modeline. In this cases, return | |
5307 | the entire generated key sequence, even if we hit an unbound | |
5308 | prefix or a definition before the end. This means that you will | |
5309 | be able to push back the event properly, and also means that | |
5310 | read-key-sequence will always return a logical unit. | |
5311 | ||
5312 | Better ideas? */ | |
cca310da JB |
5313 | for (; t < mock_input; t++) |
5314 | { | |
a98ea3f9 RS |
5315 | if (echo_keystrokes) |
5316 | echo_char (keybuf[t]); | |
cca310da JB |
5317 | add_command_key (keybuf[t]); |
5318 | } | |
07f76a14 | 5319 | |
284f4730 JB |
5320 | return t; |
5321 | } | |
5322 | ||
a612e298 RS |
5323 | #if 0 /* This doc string is too long for some compilers. |
5324 | This commented-out definition serves for DOC. */ | |
c0a58692 | 5325 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
5326 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5327 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5328 | current local and global maps.\n\ | |
5329 | \n\ | |
c0a58692 RS |
5330 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5331 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5332 | as a continuation of the previous key.\n\ | |
284f4730 | 5333 | \n\ |
cb5df6ae JB |
5334 | A C-g typed while in this function is treated like any other character,\n\ |
5335 | and `quit-flag' is not set.\n\ | |
5336 | \n\ | |
5337 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5338 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5339 | of the selected window as normal.\n\ | |
ede41463 | 5340 | ""\n\ |
cb5df6ae JB |
5341 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5342 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5343 | or multi-click event is unbound, but the corresponding click event would\n\ |
5344 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5345 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5346 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5347 | \n\ |
5348 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5349 | lines separating windows, and scroll bars with imaginary keys\n\ |
5350 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
5351 | \n\ |
5352 | If the user switches frames in the middle of a key sequence, the\n\ | |
5353 | frame-switch event is put off until after the current key sequence.\n\ | |
5354 | \n\ | |
5355 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5356 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5357 | `function-key-map' for more details.") |
a612e298 RS |
5358 | (prompt, continue_echo) |
5359 | #endif | |
5360 | ||
5361 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, | |
5362 | 0) | |
c0a58692 RS |
5363 | (prompt, continue_echo) |
5364 | Lisp_Object prompt, continue_echo; | |
284f4730 JB |
5365 | { |
5366 | Lisp_Object keybuf[30]; | |
5367 | register int i; | |
5368 | struct gcpro gcpro1, gcpro2; | |
5369 | ||
5370 | if (!NILP (prompt)) | |
5371 | CHECK_STRING (prompt, 0); | |
5372 | QUIT; | |
5373 | ||
5374 | bzero (keybuf, sizeof keybuf); | |
5375 | GCPRO1 (keybuf[0]); | |
5376 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5377 | ||
daa37602 | 5378 | if (NILP (continue_echo)) |
c0a58692 RS |
5379 | this_command_key_count = 0; |
5380 | ||
84d91fda | 5381 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), prompt); |
284f4730 | 5382 | |
dcc408a0 RS |
5383 | if (i == -1) |
5384 | { | |
5385 | Vquit_flag = Qt; | |
5386 | QUIT; | |
5387 | } | |
284f4730 | 5388 | UNGCPRO; |
86e5706b | 5389 | return make_event_array (i, keybuf); |
284f4730 JB |
5390 | } |
5391 | \f | |
5392 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5393 | "Execute CMD as an editor command.\n\ | |
5394 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5395 | Optional second arg RECORD-FLAG non-nil\n\ | |
5396 | means unconditionally put this command in `command-history'.\n\ | |
5397 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5398 | (cmd, record) | |
5399 | Lisp_Object cmd, record; | |
5400 | { | |
5401 | register Lisp_Object final; | |
5402 | register Lisp_Object tem; | |
5403 | Lisp_Object prefixarg; | |
5404 | struct backtrace backtrace; | |
5405 | extern int debug_on_next_call; | |
5406 | ||
5407 | prefixarg = Vprefix_arg, Vprefix_arg = Qnil; | |
5408 | Vcurrent_prefix_arg = prefixarg; | |
5409 | debug_on_next_call = 0; | |
5410 | ||
8c18cbfb | 5411 | if (SYMBOLP (cmd)) |
284f4730 JB |
5412 | { |
5413 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5414 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5415 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5416 | } |
5417 | ||
5418 | while (1) | |
5419 | { | |
ffd56f97 | 5420 | final = Findirect_function (cmd); |
284f4730 JB |
5421 | |
5422 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5423 | do_autoload (final, cmd); | |
5424 | else | |
5425 | break; | |
5426 | } | |
5427 | ||
8c18cbfb | 5428 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
5429 | { |
5430 | /* If requested, place the macro in the command history. For | |
5431 | other sorts of commands, call-interactively takes care of | |
5432 | this. */ | |
5433 | if (!NILP (record)) | |
5434 | Vcommand_history | |
5435 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5436 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5437 | Vcommand_history); | |
5438 | ||
5439 | return Fexecute_kbd_macro (final, prefixarg); | |
5440 | } | |
8c18cbfb | 5441 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
5442 | { |
5443 | backtrace.next = backtrace_list; | |
5444 | backtrace_list = &backtrace; | |
5445 | backtrace.function = &Qcall_interactively; | |
5446 | backtrace.args = &cmd; | |
5447 | backtrace.nargs = 1; | |
5448 | backtrace.evalargs = 0; | |
5449 | ||
5450 | tem = Fcall_interactively (cmd, record); | |
5451 | ||
5452 | backtrace_list = backtrace.next; | |
5453 | return tem; | |
5454 | } | |
5455 | return Qnil; | |
5456 | } | |
5457 | \f | |
284f4730 JB |
5458 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5459 | 1, 1, "P", | |
5460 | "Read function name, then read its arguments and call it.") | |
5461 | (prefixarg) | |
5462 | Lisp_Object prefixarg; | |
5463 | { | |
5464 | Lisp_Object function; | |
5465 | char buf[40]; | |
5466 | Lisp_Object saved_keys; | |
5467 | struct gcpro gcpro1; | |
5468 | ||
b0f2a7bf KH |
5469 | saved_keys = Fvector (this_command_key_count, |
5470 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5471 | buf[0] = 0; |
5472 | GCPRO1 (saved_keys); | |
5473 | ||
5474 | if (EQ (prefixarg, Qminus)) | |
5475 | strcpy (buf, "- "); | |
5476 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5477 | strcpy (buf, "C-u "); | |
8c18cbfb | 5478 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
284f4730 | 5479 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); |
8c18cbfb | 5480 | else if (INTEGERP (prefixarg)) |
284f4730 JB |
5481 | sprintf (buf, "%d ", XINT (prefixarg)); |
5482 | ||
5483 | /* This isn't strictly correct if execute-extended-command | |
5484 | is bound to anything else. Perhaps it should use | |
5485 | this_command_keys? */ | |
5486 | strcat (buf, "M-x "); | |
5487 | ||
5488 | /* Prompt with buf, and then read a string, completing from and | |
5489 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5490 | any initial input. Save the command read on the extended-command |
03b4122a | 5491 | history list. */ |
284f4730 JB |
5492 | function = Fcompleting_read (build_string (buf), |
5493 | Vobarray, Qcommandp, | |
03b4122a | 5494 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5495 | |
1113d9db JB |
5496 | /* Set this_command_keys to the concatenation of saved_keys and |
5497 | function, followed by a RET. */ | |
284f4730 | 5498 | { |
1113d9db | 5499 | struct Lisp_String *str; |
b0f2a7bf | 5500 | Lisp_Object *keys; |
284f4730 JB |
5501 | int i; |
5502 | Lisp_Object tem; | |
5503 | ||
1113d9db JB |
5504 | this_command_key_count = 0; |
5505 | ||
b0f2a7bf KH |
5506 | keys = XVECTOR (saved_keys)->contents; |
5507 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5508 | add_command_key (keys[i]); | |
1113d9db JB |
5509 | |
5510 | str = XSTRING (function); | |
5511 | for (i = 0; i < str->size; i++) | |
5512 | { | |
bb9e9bed | 5513 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
5514 | add_command_key (tem); |
5515 | } | |
5516 | ||
bb9e9bed | 5517 | XSETFASTINT (tem, '\015'); |
1113d9db | 5518 | add_command_key (tem); |
284f4730 JB |
5519 | } |
5520 | ||
5521 | UNGCPRO; | |
5522 | ||
0a7f1fc0 | 5523 | function = Fintern (function, Qnil); |
284f4730 JB |
5524 | Vprefix_arg = prefixarg; |
5525 | this_command = function; | |
5526 | ||
5527 | return Fcommand_execute (function, Qt); | |
5528 | } | |
5529 | \f | |
5530 | ||
5531 | detect_input_pending () | |
5532 | { | |
5533 | if (!input_pending) | |
5534 | get_input_pending (&input_pending); | |
5535 | ||
5536 | return input_pending; | |
5537 | } | |
5538 | ||
ffd56f97 JB |
5539 | /* This is called in some cases before a possible quit. |
5540 | It cases the next call to detect_input_pending to recompute input_pending. | |
5541 | So calling this function unnecessarily can't do any harm. */ | |
5542 | clear_input_pending () | |
5543 | { | |
5544 | input_pending = 0; | |
5545 | } | |
5546 | ||
284f4730 JB |
5547 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5548 | "T if command input is currently available with no waiting.\n\ | |
5549 | Actually, the value is nil only if we can be sure that no input is available.") | |
5550 | () | |
5551 | { | |
24597608 | 5552 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5553 | return (Qt); |
5554 | ||
5555 | return detect_input_pending () ? Qt : Qnil; | |
5556 | } | |
5557 | ||
5558 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5559 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5560 | () |
5561 | { | |
5160df46 | 5562 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5563 | Lisp_Object val; |
5564 | ||
5565 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5566 | return Fvector (total_keys, keys); |
284f4730 JB |
5567 | else |
5568 | { | |
5160df46 JB |
5569 | val = Fvector (NUM_RECENT_KEYS, keys); |
5570 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5571 | XVECTOR (val)->contents, |
5572 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5573 | bcopy (keys, |
284f4730 JB |
5574 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5575 | recent_keys_index * sizeof (Lisp_Object)); | |
5576 | return val; | |
5577 | } | |
5578 | } | |
5579 | ||
5580 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5581 | "Return the key sequence that invoked this command.\n\ |
5582 | The value is a string or a vector.") | |
284f4730 JB |
5583 | () |
5584 | { | |
86e5706b RS |
5585 | return make_event_array (this_command_key_count, |
5586 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5587 | } |
5588 | ||
5589 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5590 | "Return the current depth in recursive edits.") | |
5591 | () | |
5592 | { | |
5593 | Lisp_Object temp; | |
bb9e9bed | 5594 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
5595 | return temp; |
5596 | } | |
5597 | ||
5598 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5599 | "FOpen dribble file: ", | |
9b2471df RS |
5600 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5601 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5602 | (file) |
5603 | Lisp_Object file; | |
5604 | { | |
5605 | if (NILP (file)) | |
5606 | { | |
d0011c11 RS |
5607 | if (dribble) |
5608 | { | |
5609 | fclose (dribble); | |
5610 | dribble = 0; | |
5611 | } | |
284f4730 JB |
5612 | } |
5613 | else | |
5614 | { | |
5615 | file = Fexpand_file_name (file, Qnil); | |
5616 | dribble = fopen (XSTRING (file)->data, "w"); | |
5617 | } | |
5618 | return Qnil; | |
5619 | } | |
5620 | ||
5621 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5622 | "Discard the contents of the terminal input buffer.\n\ | |
5623 | Also cancel any kbd macro being defined.") | |
5624 | () | |
5625 | { | |
5626 | defining_kbd_macro = 0; | |
5627 | update_mode_lines++; | |
5628 | ||
24597608 | 5629 | Vunread_command_events = Qnil; |
86e5706b | 5630 | unread_command_char = -1; |
284f4730 JB |
5631 | |
5632 | discard_tty_input (); | |
5633 | ||
ff0b5f4c JB |
5634 | /* Without the cast, GCC complains that this assignment loses the |
5635 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5636 | with that? */ | |
5637 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; | |
7b4aedb9 | 5638 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
284f4730 JB |
5639 | input_pending = 0; |
5640 | ||
5641 | return Qnil; | |
5642 | } | |
5643 | \f | |
5644 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5645 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5646 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
5647 | control, run a subshell instead.\n\n\ | |
284f4730 | 5648 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
5649 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
5650 | \n\ | |
bbdc2092 RS |
5651 | Before suspending, run the normal hook `suspend-hook'.\n\ |
5652 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
5653 | \n\ |
5654 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 5655 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
5656 | (stuffstring) |
5657 | Lisp_Object stuffstring; | |
5658 | { | |
3a69360c | 5659 | Lisp_Object tem; |
284f4730 JB |
5660 | int count = specpdl_ptr - specpdl; |
5661 | int old_height, old_width; | |
5662 | int width, height; | |
b7d2ebbf | 5663 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
5664 | extern init_sys_modes (); |
5665 | ||
5666 | if (!NILP (stuffstring)) | |
5667 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 5668 | |
1e95ed28 JB |
5669 | /* Run the functions in suspend-hook. */ |
5670 | if (!NILP (Vrun_hooks)) | |
5671 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 5672 | |
b7d2ebbf | 5673 | GCPRO1 (stuffstring); |
ff11dfa1 | 5674 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
5675 | reset_sys_modes (); |
5676 | /* sys_suspend can get an error if it tries to fork a subshell | |
5677 | and the system resources aren't available for that. */ | |
5678 | record_unwind_protect (init_sys_modes, 0); | |
5679 | stuff_buffered_input (stuffstring); | |
8026024c KH |
5680 | if (cannot_suspend) |
5681 | sys_subshell (); | |
5682 | else | |
5683 | sys_suspend (); | |
284f4730 JB |
5684 | unbind_to (count, Qnil); |
5685 | ||
5686 | /* Check if terminal/window size has changed. | |
5687 | Note that this is not useful when we are running directly | |
5688 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 5689 | get_frame_size (&width, &height); |
284f4730 | 5690 | if (width != old_width || height != old_height) |
f5ea6163 | 5691 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 5692 | |
1e95ed28 | 5693 | /* Run suspend-resume-hook. */ |
284f4730 JB |
5694 | if (!NILP (Vrun_hooks)) |
5695 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
5696 | ||
5697 | UNGCPRO; | |
5698 | return Qnil; | |
5699 | } | |
5700 | ||
5701 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 5702 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
5703 | |
5704 | stuff_buffered_input (stuffstring) | |
5705 | Lisp_Object stuffstring; | |
5706 | { | |
5707 | register unsigned char *p; | |
5708 | ||
5709 | /* stuff_char works only in BSD, versions 4.2 and up. */ | |
5710 | #ifdef BSD | |
5711 | #ifndef BSD4_1 | |
8c18cbfb | 5712 | if (STRINGP (stuffstring)) |
284f4730 JB |
5713 | { |
5714 | register int count; | |
5715 | ||
5716 | p = XSTRING (stuffstring)->data; | |
5717 | count = XSTRING (stuffstring)->size; | |
5718 | while (count-- > 0) | |
5719 | stuff_char (*p++); | |
5720 | stuff_char ('\n'); | |
5721 | } | |
5722 | /* Anything we have read ahead, put back for the shell to read. */ | |
5723 | while (kbd_fetch_ptr != kbd_store_ptr) | |
5724 | { | |
5725 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) | |
5726 | kbd_fetch_ptr = kbd_buffer; | |
5727 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
e9bf89a0 | 5728 | stuff_char (kbd_fetch_ptr->code); |
4bb994d1 | 5729 | kbd_fetch_ptr->kind = no_event; |
7b4aedb9 JB |
5730 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr |
5731 | - kbd_buffer] | |
5732 | = Qnil); | |
284f4730 JB |
5733 | kbd_fetch_ptr++; |
5734 | } | |
5735 | input_pending = 0; | |
5736 | #endif | |
5737 | #endif /* BSD and not BSD4_1 */ | |
5738 | } | |
5739 | \f | |
ffd56f97 JB |
5740 | set_waiting_for_input (time_to_clear) |
5741 | EMACS_TIME *time_to_clear; | |
284f4730 | 5742 | { |
ffd56f97 | 5743 | input_available_clear_time = time_to_clear; |
284f4730 JB |
5744 | |
5745 | /* Tell interrupt_signal to throw back to read_char, */ | |
5746 | waiting_for_input = 1; | |
5747 | ||
5748 | /* If interrupt_signal was called before and buffered a C-g, | |
5749 | make it run again now, to avoid timing error. */ | |
5750 | if (!NILP (Vquit_flag)) | |
5751 | quit_throw_to_read_char (); | |
284f4730 JB |
5752 | } |
5753 | ||
5754 | clear_waiting_for_input () | |
5755 | { | |
5756 | /* Tell interrupt_signal not to throw back to read_char, */ | |
5757 | waiting_for_input = 0; | |
ffd56f97 | 5758 | input_available_clear_time = 0; |
284f4730 JB |
5759 | } |
5760 | ||
5761 | /* This routine is called at interrupt level in response to C-G. | |
5762 | If interrupt_input, this is the handler for SIGINT. | |
5763 | Otherwise, it is called from kbd_buffer_store_event, | |
5764 | in handling SIGIO or SIGTINT. | |
5765 | ||
5766 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
5767 | immediately throw back to read_char. | |
5768 | ||
5769 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
5770 | This causes eval to throw, when it gets a chance. | |
5771 | If quit-flag is already non-nil, it stops the job right away. */ | |
5772 | ||
5773 | SIGTYPE | |
5774 | interrupt_signal () | |
5775 | { | |
5776 | char c; | |
5777 | /* Must preserve main program's value of errno. */ | |
5778 | int old_errno = errno; | |
284f4730 JB |
5779 | |
5780 | #ifdef USG | |
7a80a6f6 RS |
5781 | if (!read_socket_hook && NILP (Vwindow_system)) |
5782 | { | |
5783 | /* USG systems forget handlers when they are used; | |
5784 | must reestablish each time */ | |
5785 | signal (SIGINT, interrupt_signal); | |
5786 | signal (SIGQUIT, interrupt_signal); | |
5787 | } | |
284f4730 JB |
5788 | #endif /* USG */ |
5789 | ||
5790 | cancel_echoing (); | |
5791 | ||
d5045cf9 | 5792 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
5793 | { |
5794 | fflush (stdout); | |
5795 | reset_sys_modes (); | |
5796 | sigfree (); | |
5797 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
5798 | /* | |
5799 | * On systems which can suspend the current process and return to the original | |
5800 | * shell, this command causes the user to end up back at the shell. | |
5801 | * The "Auto-save" and "Abort" questions are not asked until | |
5802 | * the user elects to return to emacs, at which point he can save the current | |
5803 | * job and either dump core or continue. | |
5804 | */ | |
5805 | sys_suspend (); | |
5806 | #else | |
5807 | #ifdef VMS | |
5808 | if (sys_suspend () == -1) | |
5809 | { | |
5810 | printf ("Not running as a subprocess;\n"); | |
5811 | printf ("you can continue or abort.\n"); | |
5812 | } | |
5813 | #else /* not VMS */ | |
5814 | /* Perhaps should really fork an inferior shell? | |
5815 | But that would not provide any way to get back | |
5816 | to the original shell, ever. */ | |
5817 | printf ("No support for stopping a process on this operating system;\n"); | |
5818 | printf ("you can continue or abort.\n"); | |
5819 | #endif /* not VMS */ | |
5820 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
5821 | #ifdef MSDOS |
5822 | /* We must remain inside the screen area when the internal terminal | |
5823 | is used. Note that [Enter] is not echoed by dos. */ | |
5824 | cursor_to (0, 0); | |
5825 | #endif | |
284f4730 JB |
5826 | printf ("Auto-save? (y or n) "); |
5827 | fflush (stdout); | |
5828 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
5829 | { |
5830 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
5831 | #ifdef MSDOS |
5832 | printf ("\r\nAuto-save done"); | |
5833 | #else /* not MSDOS */ | |
9fd7d808 | 5834 | printf ("Auto-save done\n"); |
80e4aa30 | 5835 | #endif /* not MSDOS */ |
9fd7d808 | 5836 | } |
284f4730 | 5837 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
5838 | #ifdef MSDOS |
5839 | printf ("\r\nAbort? (y or n) "); | |
5840 | #else /* not MSDOS */ | |
284f4730 JB |
5841 | #ifdef VMS |
5842 | printf ("Abort (and enter debugger)? (y or n) "); | |
5843 | #else /* not VMS */ | |
5844 | printf ("Abort (and dump core)? (y or n) "); | |
5845 | #endif /* not VMS */ | |
80e4aa30 | 5846 | #endif /* not MSDOS */ |
284f4730 JB |
5847 | fflush (stdout); |
5848 | if (((c = getchar ()) & ~040) == 'Y') | |
5849 | abort (); | |
5850 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
5851 | #ifdef MSDOS |
5852 | printf ("\r\nContinuing...\r\n"); | |
5853 | #else /* not MSDOS */ | |
284f4730 | 5854 | printf ("Continuing...\n"); |
80e4aa30 | 5855 | #endif /* not MSDOS */ |
284f4730 JB |
5856 | fflush (stdout); |
5857 | init_sys_modes (); | |
5858 | } | |
5859 | else | |
5860 | { | |
5861 | /* If executing a function that wants to be interrupted out of | |
5862 | and the user has not deferred quitting by binding `inhibit-quit' | |
5863 | then quit right away. */ | |
5864 | if (immediate_quit && NILP (Vinhibit_quit)) | |
5865 | { | |
5866 | immediate_quit = 0; | |
5867 | sigfree (); | |
5868 | Fsignal (Qquit, Qnil); | |
5869 | } | |
5870 | else | |
5871 | /* Else request quit when it's safe */ | |
5872 | Vquit_flag = Qt; | |
5873 | } | |
5874 | ||
5875 | if (waiting_for_input && !echoing) | |
5876 | quit_throw_to_read_char (); | |
5877 | ||
5878 | errno = old_errno; | |
5879 | } | |
5880 | ||
5881 | /* Handle a C-g by making read_char return C-g. */ | |
5882 | ||
5883 | quit_throw_to_read_char () | |
5884 | { | |
5885 | quit_error_check (); | |
5886 | sigfree (); | |
5887 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 5888 | clear_waiting_for_input (); |
284f4730 JB |
5889 | input_pending = 0; |
5890 | ||
24597608 | 5891 | Vunread_command_events = Qnil; |
86e5706b | 5892 | unread_command_char = -1; |
284f4730 | 5893 | |
e6b01c14 JB |
5894 | #ifdef POLL_FOR_INPUT |
5895 | /* May be > 1 if in recursive minibuffer. */ | |
5896 | if (poll_suppress_count == 0) | |
5897 | abort (); | |
5898 | #endif | |
0dfcc832 | 5899 | #ifdef MULTI_FRAME |
8c18cbfb | 5900 | if (FRAMEP (internal_last_event_frame) |
e9bf89a0 | 5901 | && XFRAME (internal_last_event_frame) != selected_frame) |
3b9189f8 | 5902 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); |
0dfcc832 | 5903 | #endif |
e6b01c14 | 5904 | |
284f4730 JB |
5905 | _longjmp (getcjmp, 1); |
5906 | } | |
5907 | \f | |
5908 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
5909 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
5910 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
5911 | nil means use CBREAK mode.\n\ | |
5912 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 5913 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
5914 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
5915 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
5916 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
5917 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
5918 | See also `current-input-mode'.") | |
284f4730 JB |
5919 | (interrupt, flow, meta, quit) |
5920 | Lisp_Object interrupt, flow, meta, quit; | |
5921 | { | |
5922 | if (!NILP (quit) | |
8c18cbfb | 5923 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
5924 | error ("set-input-mode: QUIT must be an ASCII character"); |
5925 | ||
5926 | #ifdef POLL_FOR_INPUT | |
5927 | stop_polling (); | |
5928 | #endif | |
284f4730 JB |
5929 | |
5930 | reset_sys_modes (); | |
5931 | #ifdef SIGIO | |
5932 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
5933 | #ifdef NO_SOCK_SIGIO | |
5934 | if (read_socket_hook) | |
5935 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
5936 | else | |
5937 | #endif /* NO_SOCK_SIGIO */ | |
5938 | interrupt_input = !NILP (interrupt); | |
5939 | #else /* not SIGIO */ | |
5940 | interrupt_input = 0; | |
5941 | #endif /* not SIGIO */ | |
5942 | /* Our VMS input only works by interrupts, as of now. */ | |
5943 | #ifdef VMS | |
5944 | interrupt_input = 1; | |
5945 | #endif | |
5946 | flow_control = !NILP (flow); | |
b04904fb RS |
5947 | if (NILP (meta)) |
5948 | meta_key = 0; | |
5949 | else if (EQ (meta, Qt)) | |
5950 | meta_key = 1; | |
5951 | else | |
5952 | meta_key = 2; | |
284f4730 JB |
5953 | if (!NILP (quit)) |
5954 | /* Don't let this value be out of range. */ | |
5955 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
5956 | ||
5957 | init_sys_modes (); | |
34f04431 RS |
5958 | |
5959 | #ifdef POLL_FOR_INPUT | |
5960 | poll_suppress_count = 1; | |
5961 | start_polling (); | |
5962 | #endif | |
284f4730 JB |
5963 | return Qnil; |
5964 | } | |
80645119 JB |
5965 | |
5966 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
5967 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
5968 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
5969 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
5970 | nil, Emacs is using CBREAK mode.\n\ | |
5971 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
5972 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
5973 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
5974 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
5975 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
5976 | all 8 bits as the character code.\n\ | |
80645119 JB |
5977 | QUIT is the character Emacs currently uses to quit.\n\ |
5978 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 5979 | `set-input-mode'.") |
80645119 JB |
5980 | () |
5981 | { | |
5982 | Lisp_Object val[4]; | |
5983 | ||
5984 | val[0] = interrupt_input ? Qt : Qnil; | |
5985 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 5986 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 5987 | XSETFASTINT (val[3], quit_char); |
80645119 | 5988 | |
bf673a7a | 5989 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
5990 | } |
5991 | ||
284f4730 JB |
5992 | \f |
5993 | init_keyboard () | |
5994 | { | |
284f4730 JB |
5995 | /* This is correct before outermost invocation of the editor loop */ |
5996 | command_loop_level = -1; | |
5997 | immediate_quit = 0; | |
5998 | quit_char = Ctl ('g'); | |
24597608 | 5999 | Vunread_command_events = Qnil; |
86e5706b | 6000 | unread_command_char = -1; |
284f4730 | 6001 | total_keys = 0; |
9deb415a | 6002 | recent_keys_index = 0; |
284f4730 JB |
6003 | kbd_fetch_ptr = kbd_buffer; |
6004 | kbd_store_ptr = kbd_buffer; | |
2eb6bfbe | 6005 | #ifdef HAVE_MOUSE |
a9d77f1f | 6006 | do_mouse_tracking = Qnil; |
2eb6bfbe | 6007 | #endif |
284f4730 JB |
6008 | input_pending = 0; |
6009 | ||
07d2b8de | 6010 | #ifdef MULTI_FRAME |
8f805655 JB |
6011 | /* This means that command_loop_1 won't try to select anything the first |
6012 | time through. */ | |
3c370943 JB |
6013 | internal_last_event_frame = Qnil; |
6014 | Vlast_event_frame = internal_last_event_frame; | |
7b4aedb9 JB |
6015 | #endif |
6016 | ||
6017 | /* If we're running a dumped Emacs, we need to clear out | |
6018 | kbd_buffer_frame_or_window, in case some events got into it | |
6019 | before we dumped. | |
4bb994d1 | 6020 | |
7b4aedb9 JB |
6021 | If we're running an undumped Emacs, it hasn't been initialized by |
6022 | syms_of_keyboard yet. */ | |
4bb994d1 | 6023 | if (initialized) |
7b4aedb9 | 6024 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
07d2b8de | 6025 | |
7a80a6f6 | 6026 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
6027 | { |
6028 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 6029 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
6030 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
6031 | SIGQUIT and we can't tell which one it will give us. */ | |
6032 | signal (SIGQUIT, interrupt_signal); | |
6033 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 6034 | } |
284f4730 JB |
6035 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6036 | #ifdef SIGIO | |
7a80a6f6 RS |
6037 | if (!noninteractive) |
6038 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6039 | #endif /* SIGIO */ |
284f4730 JB |
6040 | |
6041 | /* Use interrupt input by default, if it works and noninterrupt input | |
6042 | has deficiencies. */ | |
6043 | ||
6044 | #ifdef INTERRUPT_INPUT | |
6045 | interrupt_input = 1; | |
6046 | #else | |
6047 | interrupt_input = 0; | |
6048 | #endif | |
6049 | ||
6050 | /* Our VMS input only works by interrupts, as of now. */ | |
6051 | #ifdef VMS | |
6052 | interrupt_input = 1; | |
6053 | #endif | |
6054 | ||
6055 | sigfree (); | |
6056 | dribble = 0; | |
6057 | ||
6058 | if (keyboard_init_hook) | |
6059 | (*keyboard_init_hook) (); | |
6060 | ||
6061 | #ifdef POLL_FOR_INPUT | |
6062 | poll_suppress_count = 1; | |
6063 | start_polling (); | |
6064 | #endif | |
6065 | } | |
6066 | ||
6067 | /* This type's only use is in syms_of_keyboard, to initialize the | |
6068 | event header symbols and put properties on them. */ | |
6069 | struct event_head { | |
6070 | Lisp_Object *var; | |
6071 | char *name; | |
6072 | Lisp_Object *kind; | |
6073 | }; | |
6074 | ||
6075 | struct event_head head_table[] = { | |
7b4aedb9 | 6076 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6077 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6078 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6079 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6080 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6081 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6082 | }; |
6083 | ||
6084 | syms_of_keyboard () | |
6085 | { | |
2e894dab RS |
6086 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6087 | staticpro (&Qdisabled_command_hook); | |
6088 | ||
284f4730 JB |
6089 | Qself_insert_command = intern ("self-insert-command"); |
6090 | staticpro (&Qself_insert_command); | |
6091 | ||
6092 | Qforward_char = intern ("forward-char"); | |
6093 | staticpro (&Qforward_char); | |
6094 | ||
6095 | Qbackward_char = intern ("backward-char"); | |
6096 | staticpro (&Qbackward_char); | |
6097 | ||
6098 | Qdisabled = intern ("disabled"); | |
6099 | staticpro (&Qdisabled); | |
6100 | ||
e58aa385 RS |
6101 | Qundefined = intern ("undefined"); |
6102 | staticpro (&Qundefined); | |
6103 | ||
86e5706b RS |
6104 | Qpre_command_hook = intern ("pre-command-hook"); |
6105 | staticpro (&Qpre_command_hook); | |
6106 | ||
6107 | Qpost_command_hook = intern ("post-command-hook"); | |
6108 | staticpro (&Qpost_command_hook); | |
6109 | ||
3ef14e46 RS |
6110 | Qdeferred_action_function = intern ("deferred-action-function"); |
6111 | staticpro (&Qdeferred_action_function); | |
6112 | ||
40932d1a RS |
6113 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6114 | staticpro (&Qcommand_hook_internal); | |
6115 | ||
284f4730 JB |
6116 | Qfunction_key = intern ("function-key"); |
6117 | staticpro (&Qfunction_key); | |
13b5e56c | 6118 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6119 | staticpro (&Qmouse_click); |
284f4730 | 6120 | |
598a9fa7 JB |
6121 | Qmenu_enable = intern ("menu-enable"); |
6122 | staticpro (&Qmenu_enable); | |
6123 | ||
284f4730 JB |
6124 | Qmode_line = intern ("mode-line"); |
6125 | staticpro (&Qmode_line); | |
e5d77022 JB |
6126 | Qvertical_line = intern ("vertical-line"); |
6127 | staticpro (&Qvertical_line); | |
3c370943 JB |
6128 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6129 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6130 | Qmenu_bar = intern ("menu-bar"); |
6131 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6132 | |
6133 | Qabove_handle = intern ("above-handle"); | |
6134 | staticpro (&Qabove_handle); | |
6135 | Qhandle = intern ("handle"); | |
6136 | staticpro (&Qhandle); | |
6137 | Qbelow_handle = intern ("below-handle"); | |
6138 | staticpro (&Qbelow_handle); | |
284f4730 | 6139 | |
cd21b839 | 6140 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6141 | staticpro (&Qevent_kind); |
88cb0656 JB |
6142 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6143 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6144 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6145 | staticpro (&Qevent_symbol_element_mask); | |
6146 | Qmodifier_cache = intern ("modifier-cache"); | |
6147 | staticpro (&Qmodifier_cache); | |
284f4730 | 6148 | |
48e416d4 RS |
6149 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6150 | staticpro (&Qrecompute_lucid_menubar); | |
6151 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6152 | staticpro (&Qactivate_menubar_hook); | |
6153 | ||
f4eef8b4 RS |
6154 | Qpolling_period = intern ("polling-period"); |
6155 | staticpro (&Qpolling_period); | |
6156 | ||
284f4730 JB |
6157 | { |
6158 | struct event_head *p; | |
6159 | ||
6160 | for (p = head_table; | |
6161 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6162 | p++) | |
6163 | { | |
6164 | *p->var = intern (p->name); | |
6165 | staticpro (p->var); | |
6166 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6167 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6168 | } |
6169 | } | |
6170 | ||
7b4aedb9 JB |
6171 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6172 | staticpro (&button_down_location); | |
88cb0656 JB |
6173 | |
6174 | { | |
6175 | int i; | |
6176 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6177 | ||
6178 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6179 | for (i = 0; i < len; i++) | |
86e5706b RS |
6180 | if (modifier_names[i]) |
6181 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6182 | staticpro (&modifier_symbols); |
6183 | } | |
6184 | ||
9deb415a JB |
6185 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6186 | staticpro (&recent_keys); | |
6187 | ||
6569cc8d | 6188 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6189 | staticpro (&this_command_keys); |
6569cc8d | 6190 | |
03b4122a BF |
6191 | Qextended_command_history = intern ("extended-command-history"); |
6192 | Fset (Qextended_command_history, Qnil); | |
6193 | staticpro (&Qextended_command_history); | |
6194 | ||
7b4aedb9 JB |
6195 | kbd_buffer_frame_or_window |
6196 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6197 | staticpro (&kbd_buffer_frame_or_window); | |
4bb994d1 | 6198 | |
24597608 RS |
6199 | accent_key_syms = Qnil; |
6200 | staticpro (&accent_key_syms); | |
6201 | ||
284f4730 JB |
6202 | func_key_syms = Qnil; |
6203 | staticpro (&func_key_syms); | |
6204 | ||
4e0e7d8e RS |
6205 | system_key_syms = Qnil; |
6206 | staticpro (&system_key_syms); | |
6207 | ||
284f4730 JB |
6208 | mouse_syms = Qnil; |
6209 | staticpro (&mouse_syms); | |
6210 | ||
cd21b839 JB |
6211 | unread_switch_frame = Qnil; |
6212 | staticpro (&unread_switch_frame); | |
6213 | ||
284f4730 JB |
6214 | defsubr (&Sread_key_sequence); |
6215 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6216 | #ifdef HAVE_MOUSE |
284f4730 | 6217 | defsubr (&Strack_mouse); |
2eb6bfbe | 6218 | #endif |
284f4730 JB |
6219 | defsubr (&Sinput_pending_p); |
6220 | defsubr (&Scommand_execute); | |
6221 | defsubr (&Srecent_keys); | |
6222 | defsubr (&Sthis_command_keys); | |
6223 | defsubr (&Ssuspend_emacs); | |
6224 | defsubr (&Sabort_recursive_edit); | |
6225 | defsubr (&Sexit_recursive_edit); | |
6226 | defsubr (&Srecursion_depth); | |
6227 | defsubr (&Stop_level); | |
6228 | defsubr (&Sdiscard_input); | |
6229 | defsubr (&Sopen_dribble_file); | |
6230 | defsubr (&Sset_input_mode); | |
80645119 | 6231 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6232 | defsubr (&Sexecute_extended_command); |
6233 | ||
284f4730 | 6234 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6235 | "Last input event that was part of a command."); |
6236 | ||
186cf719 | 6237 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6238 | "Last input event that was part of a command."); |
284f4730 | 6239 | |
7d6de002 | 6240 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6241 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6242 | Mouse menus give back keys that don't look like mouse events;\n\ |
6243 | this variable holds the actual mouse event that led to the menu,\n\ | |
6244 | so that you can determine whether the command was run by mouse or not."); | |
6245 | ||
284f4730 | 6246 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6247 | "Last input event."); |
6248 | ||
186cf719 | 6249 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6250 | "Last input event."); |
284f4730 | 6251 | |
24597608 | 6252 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6253 | "List of objects to be read as next command input events."); |
284f4730 | 6254 | |
86e5706b RS |
6255 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6256 | "If not -1, an object to be read as next command input event."); | |
6257 | ||
284f4730 JB |
6258 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6259 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6260 | turns into this character followed by foo."); | |
18cd2eeb | 6261 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6262 | |
6263 | DEFVAR_LISP ("last-command", &last_command, | |
6264 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6265 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
6266 | `this-command' was set to by that command.\n\ |
6267 | \n\ | |
6268 | The value `mode-exit' is special; it means that the previous command\n\ | |
6269 | read an event that told it to exit, and it did so and unread that event.\n\ | |
6270 | In other words, the present command is the event that made the previous\n\ | |
6271 | command exit.\n\ | |
6272 | \n\ | |
6273 | The value `kill-region' is special; it means that the previous command\n\ | |
6274 | was a kill command."); | |
284f4730 JB |
6275 | last_command = Qnil; |
6276 | ||
6277 | DEFVAR_LISP ("this-command", &this_command, | |
6278 | "The command now being executed.\n\ | |
6279 | The command can set this variable; whatever is put here\n\ | |
6280 | will be in `last-command' during the following command."); | |
6281 | this_command = Qnil; | |
6282 | ||
6283 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6284 | "*Number of keyboard input characters between auto-saves.\n\ | |
6285 | Zero means disable autosaving due to number of characters typed."); | |
6286 | auto_save_interval = 300; | |
6287 | ||
6288 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6289 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6290 | Zero or nil means disable auto-saving due to idleness.\n\ |
6291 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6292 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6293 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6294 | |
6295 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6296 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6297 | echo_keystrokes = 1; | |
6298 | ||
6299 | DEFVAR_INT ("polling-period", &polling_period, | |
6300 | "*Interval between polling for input during Lisp execution.\n\ | |
6301 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6302 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6303 | Polling is automatically disabled in all other cases."); | |
6304 | polling_period = 2; | |
6305 | ||
564dc952 | 6306 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6307 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6308 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6309 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6310 | by position only."); |
aab06933 | 6311 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6312 | |
03361bcc RS |
6313 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6314 | "*Non-nil means inhibit local map menu bar menus."); | |
6315 | inhibit_local_menu_bar_menus = 0; | |
6316 | ||
284f4730 JB |
6317 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
6318 | "*Number of complete keys read from the keyboard so far."); | |
6319 | num_input_keys = 0; | |
6320 | ||
ff11dfa1 | 6321 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
fce33686 JB |
6322 | "*The frame in which the most recently read event occurred.\n\ |
6323 | If the last event came from a keyboard macro, this is set to `macro'."); | |
ff11dfa1 | 6324 | Vlast_event_frame = Qnil; |
284f4730 | 6325 | |
7e85b935 | 6326 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6327 | "Character to recognize as meaning Help.\n\ |
6328 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6329 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6330 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6331 | |
6332 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6333 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6334 | If the form returns a string, that string is displayed.\n\ |
6335 | If `help-form' is nil, the help char is not recognized."); | |
6336 | Vhelp_form = Qnil; | |
6337 | ||
7e85b935 RS |
6338 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6339 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6340 | This command is used only when there is no actual binding\n\ | |
6341 | for that character after that prefix key."); | |
6342 | Vprefix_help_command = Qnil; | |
6343 | ||
284f4730 JB |
6344 | DEFVAR_LISP ("top-level", &Vtop_level, |
6345 | "Form to evaluate when Emacs starts up.\n\ | |
6346 | Useful to set before you dump a modified Emacs."); | |
6347 | Vtop_level = Qnil; | |
6348 | ||
6349 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6350 | "String used as translate table for keyboard input, or nil.\n\ | |
6351 | Each character is looked up in this string and the contents used instead.\n\ | |
6352 | If string is of length N, character codes N and up are untranslated."); | |
6353 | Vkeyboard_translate_table = Qnil; | |
6354 | ||
a612e298 RS |
6355 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6356 | "Keymap of key translations that can override keymaps.\n\ | |
6357 | This keymap works like `function-key-map', but comes after that,\n\ | |
6358 | and applies even for keys that have ordinary bindings."); | |
6359 | Vkey_translation_map = Qnil; | |
6360 | ||
8026024c KH |
6361 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6362 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6363 | even if the operating system has support for stopping a process."); | |
6364 | cannot_suspend = 0; | |
6365 | ||
284f4730 | 6366 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6367 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6368 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6369 | for elements that have prompt strings.\n\ |
6370 | The menu is displayed on the screen\n\ | |
6371 | if X menus were enabled at configuration\n\ | |
6372 | time and the previous event was a mouse click prefix key.\n\ | |
6373 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6374 | menu_prompting = 1; |
6375 | ||
6376 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6377 | "Character to see next line of menu prompt.\n\ | |
6378 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 6379 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
6380 | |
6381 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6382 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6383 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6384 | character it reads. For example, after evaluating the expression\n\ | |
80645119 JB |
6385 | (setq extra-keyboard-modifiers ?\C-x)\n\ |
6386 | all input characters will have the control modifier applied to them.\n\ | |
6387 | \n\ | |
6388 | Note that the character ?\C-@, equivalent to the integer zero, does\n\ | |
6389 | not count as a control character; rather, it counts as a character\n\ | |
27203ead | 6390 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6391 | cancels any modification."); |
9fa4395d | 6392 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6393 | |
6394 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6395 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6396 | The command loop sets this to nil before each command,\n\ | |
6397 | and tests the value when the command returns.\n\ | |
6398 | Buffer modification stores t in this variable."); | |
6399 | Vdeactivate_mark = Qnil; | |
6400 | ||
b0f2a7bf KH |
6401 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6402 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6403 | Vcommand_hook_internal = Qnil; | |
6404 | ||
86e5706b | 6405 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6406 | "Normal hook run before each command is executed.\n\ |
6407 | While the hook is run, its value is temporarily set to nil\n\ | |
6408 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6409 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6410 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6411 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6412 | Vpre_command_hook = Qnil; |
6413 | ||
6414 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6415 | "Normal hook run after each command is executed.\n\ |
6416 | While the hook is run, its value is temporarily set to nil\n\ | |
6417 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6418 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6419 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6420 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6421 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6422 | |
6423 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6424 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6425 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6426 | |
9f9c0e27 RS |
6427 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6428 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6429 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6430 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6431 | |
9dd3131c RS |
6432 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6433 | "Keymap that overrides all other local keymaps.\n\ | |
6434 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6435 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6436 | Voverriding_local_map = Qnil; | |
6437 | ||
d0a49716 RS |
6438 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
6439 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
6440 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
6441 | and the minor mode maps regardless of `overriding-local-map'."); | |
6442 | Voverriding_local_map_menu_flag = Qnil; | |
6443 | ||
2eb6bfbe | 6444 | #ifdef HAVE_MOUSE |
71edead1 | 6445 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
e9bf89a0 | 6446 | "*Non-nil means generate motion events for mouse motion."); |
2eb6bfbe | 6447 | #endif |
80e4aa30 | 6448 | |
270a208f RS |
6449 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6450 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6451 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6452 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6453 | and SYMBOL is its name."); |
a69a8ca2 | 6454 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6455 | |
6456 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6457 | "List of deferred actions to be performed at a later time.\n\ | |
6458 | The precise format isn't relevant here; we just check whether it is nil."); | |
6459 | Vdeferred_action_list = Qnil; | |
6460 | ||
6461 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6462 | "Function to call to handle deferred actions, after each command.\n\ | |
6463 | This function is called with no arguments after each command\n\ | |
6464 | whenever `deferred-action-list' is non-nil."); | |
6465 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
6466 | } |
6467 | ||
6468 | keys_of_keyboard () | |
6469 | { | |
6470 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6471 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6472 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6473 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6474 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6475 | } |