Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
0d882d52 | 2 | Copyright (C) 1985,86,87,88,89,93,94,95 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 | 24 | #include <stdio.h> |
284f4730 JB |
25 | #include "termchar.h" |
26 | #include "termopts.h" | |
27 | #include "lisp.h" | |
28 | #include "termhooks.h" | |
29 | #include "macros.h" | |
ff11dfa1 | 30 | #include "frame.h" |
284f4730 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "buffer.h" | |
34 | #include "disptab.h" | |
f4255cd1 | 35 | #include "dispextern.h" |
284f4730 | 36 | #include "keyboard.h" |
497ba7a1 | 37 | #include "intervals.h" |
9ac0d9e0 | 38 | #include "blockinput.h" |
284f4730 JB |
39 | #include <setjmp.h> |
40 | #include <errno.h> | |
41 | ||
80e4aa30 RS |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #include <time.h> | |
45 | #else /* not MSDOS */ | |
284f4730 JB |
46 | #ifndef VMS |
47 | #include <sys/ioctl.h> | |
284f4730 | 48 | #endif |
80e4aa30 | 49 | #endif /* not MSDOS */ |
284f4730 | 50 | |
52baf19e | 51 | #include "syssignal.h" |
6ef5b54f | 52 | #include "systty.h" |
52baf19e | 53 | |
c5e3b6c5 RS |
54 | /* This is to get the definitions of the XK_ symbols. */ |
55 | #ifdef HAVE_X_WINDOWS | |
56 | #include "xterm.h" | |
57 | #endif | |
58 | ||
0c2611c5 RS |
59 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
60 | #include "systime.h" | |
61 | ||
52baf19e JB |
62 | extern int errno; |
63 | ||
9ac0d9e0 JB |
64 | /* Variables for blockinput.h: */ |
65 | ||
66 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 67 | int interrupt_input_blocked; |
9ac0d9e0 JB |
68 | |
69 | /* Nonzero means an input interrupt has arrived | |
70 | during the current critical section. */ | |
63927c41 | 71 | int interrupt_input_pending; |
9ac0d9e0 JB |
72 | |
73 | ||
437f6112 RS |
74 | /* File descriptor to use for input. */ |
75 | extern int input_fd; | |
284f4730 | 76 | |
bcce3e02 | 77 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
78 | /* Make all keyboard buffers much bigger when using X windows. */ |
79 | #define KBD_BUFFER_SIZE 4096 | |
80 | #else /* No X-windows, character input */ | |
81 | #define KBD_BUFFER_SIZE 256 | |
82 | #endif /* No X-windows */ | |
83 | ||
84 | /* Following definition copied from eval.c */ | |
85 | ||
86 | struct backtrace | |
87 | { | |
88 | struct backtrace *next; | |
89 | Lisp_Object *function; | |
90 | Lisp_Object *args; /* Points to vector of args. */ | |
91 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
92 | args points to slot holding list of | |
93 | unevalled args */ | |
94 | char evalargs; | |
95 | }; | |
96 | ||
6c6083a9 KH |
97 | #ifdef MULTI_PERDISPLAY |
98 | PERDISPLAY *current_perdisplay; | |
a2b20856 | 99 | PERDISPLAY *all_perdisplays; |
bded54dd | 100 | int display_locked; |
6c6083a9 | 101 | #else |
ba72822c | 102 | PERDISPLAY the_only_perdisplay; |
6c6083a9 | 103 | #endif |
612b78ef | 104 | |
284f4730 JB |
105 | /* Non-nil disable property on a command means |
106 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 107 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
108 | |
109 | #define NUM_RECENT_KEYS (100) | |
110 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
111 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 112 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 113 | |
6569cc8d JB |
114 | /* Vector holding the key sequence that invoked the current command. |
115 | It is reused for each command, and it may be longer than the current | |
116 | sequence; this_command_key_count indicates how many elements | |
117 | actually mean something. | |
118 | It's easier to staticpro a single Lisp_Object than an array. */ | |
119 | Lisp_Object this_command_keys; | |
120 | int this_command_key_count; | |
284f4730 JB |
121 | |
122 | extern int minbuf_level; | |
123 | ||
124 | extern struct backtrace *backtrace_list; | |
125 | ||
126 | /* Nonzero means do menu prompting. */ | |
127 | static int menu_prompting; | |
128 | ||
129 | /* Character to see next line of menu prompt. */ | |
130 | static Lisp_Object menu_prompt_more_char; | |
131 | ||
132 | /* For longjmp to where kbd input is being done. */ | |
133 | static jmp_buf getcjmp; | |
134 | ||
135 | /* True while doing kbd input. */ | |
136 | int waiting_for_input; | |
137 | ||
138 | /* True while displaying for echoing. Delays C-g throwing. */ | |
139 | static int echoing; | |
140 | ||
03361bcc RS |
141 | /* Nonzero means disregard local maps for the menu bar. */ |
142 | static int inhibit_local_menu_bar_menus; | |
143 | ||
80e4aa30 | 144 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
145 | int immediate_quit; |
146 | ||
147 | /* Character to recognize as the help char. */ | |
7e85b935 | 148 | Lisp_Object Vhelp_char; |
284f4730 JB |
149 | |
150 | /* Form to execute when help char is typed. */ | |
151 | Lisp_Object Vhelp_form; | |
152 | ||
7e85b935 RS |
153 | /* Command to run when the help character follows a prefix key. */ |
154 | Lisp_Object Vprefix_help_command; | |
155 | ||
9f9c0e27 RS |
156 | /* List of items that should move to the end of the menu bar. */ |
157 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 158 | |
284f4730 JB |
159 | /* Character that causes a quit. Normally C-g. |
160 | ||
161 | If we are running on an ordinary terminal, this must be an ordinary | |
162 | ASCII char, since we want to make it our interrupt character. | |
163 | ||
164 | If we are not running on an ordinary terminal, it still needs to be | |
165 | an ordinary ASCII char. This character needs to be recognized in | |
166 | the input interrupt handler. At this point, the keystroke is | |
167 | represented as a struct input_event, while the desired quit | |
168 | character is specified as a lispy event. The mapping from struct | |
169 | input_events to lispy events cannot run in an interrupt handler, | |
170 | and the reverse mapping is difficult for anything but ASCII | |
171 | keystrokes. | |
172 | ||
173 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
174 | ASCII character. */ | |
175 | int quit_char; | |
176 | ||
177 | extern Lisp_Object current_global_map; | |
178 | extern int minibuf_level; | |
179 | ||
9dd3131c RS |
180 | /* If non-nil, this is a map that overrides all other local maps. */ |
181 | Lisp_Object Voverriding_local_map; | |
182 | ||
d0a49716 RS |
183 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
184 | Lisp_Object Voverriding_local_map_menu_flag; | |
185 | ||
284f4730 JB |
186 | /* Current depth in recursive edits. */ |
187 | int command_loop_level; | |
188 | ||
189 | /* Total number of times command_loop has read a key sequence. */ | |
190 | int num_input_keys; | |
191 | ||
192 | /* Last input character read as a command. */ | |
193 | Lisp_Object last_command_char; | |
194 | ||
7d6de002 RS |
195 | /* Last input character read as a command, not counting menus |
196 | reached by the mouse. */ | |
197 | Lisp_Object last_nonmenu_event; | |
198 | ||
284f4730 JB |
199 | /* Last input character read for any purpose. */ |
200 | Lisp_Object last_input_char; | |
201 | ||
dbc4e1c1 | 202 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 203 | Lisp_Object Vunread_command_events; |
284f4730 | 204 | |
86e5706b RS |
205 | /* If not -1, an event to be read as subsequent command input. */ |
206 | int unread_command_char; | |
207 | ||
cd21b839 JB |
208 | /* If not Qnil, this is a switch-frame event which we decided to put |
209 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 210 | next command input, after any unread_command_events. |
8f805655 JB |
211 | |
212 | read_key_sequence uses this to delay switch-frame events until the | |
213 | end of the key sequence; Fread_char uses it to put off switch-frame | |
214 | events until a non-ASCII event is acceptable as input. */ | |
215 | Lisp_Object unread_switch_frame; | |
cd21b839 | 216 | |
9fa4395d RS |
217 | /* A mask of extra modifier bits to put into every keyboard char. */ |
218 | int extra_keyboard_modifiers; | |
219 | ||
284f4730 JB |
220 | /* Char to use as prefix when a meta character is typed in. |
221 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
222 | ||
223 | Lisp_Object meta_prefix_char; | |
224 | ||
225 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
226 | static int last_non_minibuf_size; | |
227 | ||
06ef7355 | 228 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
229 | static Lisp_Object Vauto_save_timeout; |
230 | ||
231 | /* Total number of times read_char has returned. */ | |
232 | int num_input_chars; | |
233 | ||
51172b6d RS |
234 | /* Total number of times read_char has returned, outside of macros. */ |
235 | int num_nonmacro_input_chars; | |
236 | ||
284f4730 JB |
237 | /* Auto-save automatically when this many characters have been typed |
238 | since the last time. */ | |
239 | ||
240 | static int auto_save_interval; | |
241 | ||
51172b6d | 242 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
243 | |
244 | int last_auto_save; | |
245 | ||
246 | /* Last command executed by the editor command loop, not counting | |
247 | commands that set the prefix argument. */ | |
248 | ||
249 | Lisp_Object last_command; | |
250 | ||
251 | /* The command being executed by the command loop. | |
252 | Commands may set this, and the value set will be copied into last_command | |
253 | instead of the actual command. */ | |
254 | Lisp_Object this_command; | |
255 | ||
b453f72e KH |
256 | /* The value of point when the last command was executed. */ |
257 | int last_point_position; | |
258 | ||
047688cb RS |
259 | /* The buffer that was current when the last command was started. */ |
260 | Lisp_Object last_point_position_buffer; | |
261 | ||
4c52b668 KH |
262 | #ifdef MULTI_FRAME |
263 | /* The frame in which the last input event occurred, or Qmacro if the | |
264 | last event came from a macro. We use this to determine when to | |
265 | generate switch-frame events. This may be cleared by functions | |
266 | like Fselect_frame, to make sure that a switch-frame event is | |
267 | generated by the next character. */ | |
268 | Lisp_Object internal_last_event_frame; | |
269 | #endif | |
270 | ||
271 | /* A user-visible version of the above, intended to allow users to | |
272 | figure out where the last event came from, if the event doesn't | |
273 | carry that information itself (i.e. if it was a character). */ | |
274 | Lisp_Object Vlast_event_frame; | |
275 | ||
1113d9db JB |
276 | /* The timestamp of the last input event we received from the X server. |
277 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
278 | unsigned long last_event_timestamp; |
279 | ||
280 | Lisp_Object Qself_insert_command; | |
281 | Lisp_Object Qforward_char; | |
282 | Lisp_Object Qbackward_char; | |
e58aa385 | 283 | Lisp_Object Qundefined; |
5169b66d | 284 | Lisp_Object Qdigit_argument, Qnegative_argument; |
284f4730 JB |
285 | |
286 | /* read_key_sequence stores here the command definition of the | |
287 | key sequence that it reads. */ | |
288 | Lisp_Object read_key_sequence_cmd; | |
289 | ||
290 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
291 | Lisp_Object Vtop_level; | |
292 | ||
293 | /* User-supplied string to translate input characters through. */ | |
294 | Lisp_Object Vkeyboard_translate_table; | |
295 | ||
296 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
297 | extern Lisp_Object Vfunction_key_map; | |
298 | ||
a612e298 RS |
299 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
300 | Lisp_Object Vkey_translation_map; | |
301 | ||
86e5706b RS |
302 | /* Non-nil means deactivate the mark at end of this command. */ |
303 | Lisp_Object Vdeactivate_mark; | |
304 | ||
48e416d4 RS |
305 | /* Menu bar specified in Lucid Emacs fashion. */ |
306 | ||
307 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
308 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
309 | ||
86e5706b RS |
310 | /* Hooks to run before and after each command. */ |
311 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
312 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 313 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 314 | |
8a792f3a RS |
315 | /* List of deferred actions to be performed at a later time. |
316 | The precise format isn't relevant here; we just check whether it is nil. */ | |
317 | Lisp_Object Vdeferred_action_list; | |
318 | ||
319 | /* Function to call to handle deferred actions, when there are any. */ | |
320 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 321 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 322 | |
284f4730 JB |
323 | /* File in which we write all commands we read. */ |
324 | FILE *dribble; | |
325 | ||
326 | /* Nonzero if input is available. */ | |
327 | int input_pending; | |
328 | ||
b04904fb RS |
329 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
330 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
331 | ||
284f4730 JB |
332 | int meta_key; |
333 | ||
334 | extern char *pending_malloc_warning; | |
335 | ||
beecf6a1 KH |
336 | /* Circular buffer for pre-read keyboard input. */ |
337 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
338 | ||
339 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
340 | ||
341 | The interrupt-level event handlers will never enqueue an event on a | |
342 | frame which is not in Vframe_list, and once an event is dequeued, | |
343 | internal_last_event_frame or the event itself points to the frame. | |
344 | So that's all fine. | |
345 | ||
346 | But while the event is sitting in the queue, it's completely | |
347 | unprotected. Suppose the user types one command which will run for | |
348 | a while and then delete a frame, and then types another event at | |
349 | the frame that will be deleted, before the command gets around to | |
350 | it. Suppose there are no references to this frame elsewhere in | |
351 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
352 | have an event referring to a freed frame, which will crash Emacs | |
353 | when it is dequeued. | |
354 | ||
355 | Similar things happen when an event on a scroll bar is enqueued; the | |
356 | window may be deleted while the event is in the queue. | |
357 | ||
358 | So, we use this vector to protect the frame_or_window field in the | |
359 | event queue. That way, they'll be dequeued as dead frames or | |
360 | windows, but still valid lisp objects. | |
361 | ||
362 | If kbd_buffer[i].kind != no_event, then | |
363 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
364 | == kbd_buffer[i].frame_or_window. */ | |
365 | static Lisp_Object kbd_buffer_frame_or_window; | |
366 | ||
367 | /* Pointer to next available character in kbd_buffer. | |
368 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
369 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
370 | next available char is in kbd_buffer[0]. */ | |
371 | static struct input_event *kbd_fetch_ptr; | |
372 | ||
373 | /* Pointer to next place to store character in kbd_buffer. This | |
374 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
375 | character should go in kbd_buffer[0]. */ | |
376 | static volatile struct input_event *kbd_store_ptr; | |
377 | ||
378 | /* The above pair of variables forms a "queue empty" flag. When we | |
379 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
380 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
381 | there is input available iff the two pointers are not equal. | |
382 | ||
383 | Why not just have a flag set and cleared by the enqueuing and | |
384 | dequeuing functions? Such a flag could be screwed up by interrupts | |
385 | at inopportune times. */ | |
386 | ||
2eb6bfbe | 387 | #ifdef HAVE_MOUSE |
a9d77f1f RS |
388 | /* If this flag is a frame, we check mouse_moved to see when the |
389 | mouse moves, and motion events will appear in the input stream. | |
390 | Otherwise, mouse motion is ignored. */ | |
391 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
392 | |
393 | /* The window system handling code should set this if the mouse has | |
394 | moved since the last call to the mouse_position_hook. Calling that | |
395 | hook should clear this. Code assumes that if this is set, it can | |
396 | call mouse_position_hook to get the promised position, so don't set | |
397 | it unless you're prepared to substantiate the claim! */ | |
398 | int mouse_moved; | |
2eb6bfbe | 399 | #endif /* HAVE_MOUSE. */ |
284f4730 JB |
400 | |
401 | /* Symbols to head events. */ | |
402 | Lisp_Object Qmouse_movement; | |
3c370943 | 403 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 404 | Lisp_Object Qswitch_frame; |
bbdc2092 | 405 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
406 | Lisp_Object Qiconify_frame; |
407 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 408 | |
284f4730 JB |
409 | /* Symbols to denote kinds of events. */ |
410 | Lisp_Object Qfunction_key; | |
411 | Lisp_Object Qmouse_click; | |
412 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
413 | |
414 | /* Properties of event headers. */ | |
415 | Lisp_Object Qevent_kind; | |
88cb0656 | 416 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 417 | |
598a9fa7 JB |
418 | Lisp_Object Qmenu_enable; |
419 | ||
0a7f1fc0 JB |
420 | /* An event header symbol HEAD may have a property named |
421 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
422 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
423 | mask of modifiers applied to it. If present, this is used to help | |
424 | speed up parse_modifiers. */ | |
425 | Lisp_Object Qevent_symbol_element_mask; | |
426 | ||
427 | /* An unmodified event header BASE may have a property named | |
428 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
429 | modified versions of BASE. If present, this helps speed up | |
430 | apply_modifiers. */ | |
431 | Lisp_Object Qmodifier_cache; | |
432 | ||
5ec75a55 | 433 | /* Symbols to use for parts of windows. */ |
284f4730 | 434 | Lisp_Object Qmode_line; |
e5d77022 | 435 | Lisp_Object Qvertical_line; |
3c370943 | 436 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
437 | Lisp_Object Qmenu_bar; |
438 | ||
439 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 440 | |
f4255cd1 JB |
441 | Lisp_Object recursive_edit_unwind (), command_loop (); |
442 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 443 | Lisp_Object Qextended_command_history; |
284f4730 | 444 | |
f4eef8b4 RS |
445 | Lisp_Object Qpolling_period; |
446 | ||
a9f16aa9 KH |
447 | extern Lisp_Object Vprint_level, Vprint_length; |
448 | ||
ffd56f97 JB |
449 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
450 | happens. */ | |
451 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
452 | |
453 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
454 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
455 | int interrupt_input; | |
456 | ||
457 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
458 | int interrupts_deferred; | |
459 | ||
460 | /* nonzero means use ^S/^Q for flow control. */ | |
461 | int flow_control; | |
462 | ||
284f4730 JB |
463 | /* Allow m- file to inhibit use of FIONREAD. */ |
464 | #ifdef BROKEN_FIONREAD | |
465 | #undef FIONREAD | |
466 | #endif | |
467 | ||
468 | /* We are unable to use interrupts if FIONREAD is not available, | |
469 | so flush SIGIO so we won't try. */ | |
470 | #ifndef FIONREAD | |
471 | #ifdef SIGIO | |
472 | #undef SIGIO | |
473 | #endif | |
474 | #endif | |
475 | ||
34f04431 RS |
476 | /* If we support X Windows, turn on the code to poll periodically |
477 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 478 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
479 | #define POLL_FOR_INPUT |
480 | #endif | |
284f4730 JB |
481 | \f |
482 | /* Global variable declarations. */ | |
483 | ||
484 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
485 | void (*keyboard_init_hook) (); | |
486 | ||
487 | static int read_avail_input (); | |
488 | static void get_input_pending (); | |
9fd7d808 | 489 | static int readable_events (); |
8150596a RS |
490 | static Lisp_Object read_char_x_menu_prompt (); |
491 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
492 | static Lisp_Object make_lispy_event (); |
493 | static Lisp_Object make_lispy_movement (); | |
494 | static Lisp_Object modify_event_symbol (); | |
495 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
496 | |
497 | /* > 0 if we are to echo keystrokes. */ | |
498 | static int echo_keystrokes; | |
499 | ||
8026024c KH |
500 | /* Nonzero means don't try to suspend even if the operating system seems |
501 | to support it. */ | |
502 | static int cannot_suspend; | |
503 | ||
284f4730 JB |
504 | #define min(a,b) ((a)<(b)?(a):(b)) |
505 | #define max(a,b) ((a)>(b)?(a):(b)) | |
506 | ||
507 | /* Install the string STR as the beginning of the string of echoing, | |
508 | so that it serves as a prompt for the next character. | |
509 | Also start echoing. */ | |
510 | ||
511 | echo_prompt (str) | |
512 | char *str; | |
513 | { | |
514 | int len = strlen (str); | |
7a80a6f6 | 515 | |
ba72822c KH |
516 | if (len > ECHOBUFSIZE - 4) |
517 | len = ECHOBUFSIZE - 4; | |
6c6083a9 KH |
518 | bcopy (str, current_perdisplay->echobuf, len); |
519 | current_perdisplay->echoptr = current_perdisplay->echobuf + len; | |
520 | *current_perdisplay->echoptr = '\0'; | |
284f4730 | 521 | |
6c6083a9 | 522 | current_perdisplay->echo_after_prompt = len; |
7a80a6f6 | 523 | |
284f4730 JB |
524 | echo (); |
525 | } | |
526 | ||
527 | /* Add C to the echo string, if echoing is going on. | |
528 | C can be a character, which is printed prettily ("M-C-x" and all that | |
529 | jazz), or a symbol, whose name is printed. */ | |
530 | ||
531 | echo_char (c) | |
532 | Lisp_Object c; | |
533 | { | |
534 | extern char *push_key_description (); | |
535 | ||
6c6083a9 | 536 | if (current_perdisplay->immediate_echo) |
284f4730 | 537 | { |
6c6083a9 | 538 | char *ptr = current_perdisplay->echoptr; |
284f4730 | 539 | |
6c6083a9 | 540 | if (ptr != current_perdisplay->echobuf) |
284f4730 JB |
541 | *ptr++ = ' '; |
542 | ||
543 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 544 | c = EVENT_HEAD (c); |
284f4730 | 545 | |
8c18cbfb | 546 | if (INTEGERP (c)) |
284f4730 | 547 | { |
6c6083a9 | 548 | if (ptr - current_perdisplay->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
549 | return; |
550 | ||
cb5df6ae | 551 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 552 | } |
8c18cbfb | 553 | else if (SYMBOLP (c)) |
284f4730 JB |
554 | { |
555 | struct Lisp_String *name = XSYMBOL (c)->name; | |
6c6083a9 KH |
556 | if (((ptr - current_perdisplay->echobuf) + name->size + 4) |
557 | > ECHOBUFSIZE) | |
284f4730 JB |
558 | return; |
559 | bcopy (name->data, ptr, name->size); | |
560 | ptr += name->size; | |
561 | } | |
562 | ||
6c6083a9 KH |
563 | if (current_perdisplay->echoptr == current_perdisplay->echobuf |
564 | && EQ (c, Vhelp_char)) | |
284f4730 JB |
565 | { |
566 | strcpy (ptr, " (Type ? for further options)"); | |
567 | ptr += strlen (ptr); | |
568 | } | |
569 | ||
570 | *ptr = 0; | |
6c6083a9 | 571 | current_perdisplay->echoptr = ptr; |
284f4730 JB |
572 | |
573 | echo (); | |
574 | } | |
575 | } | |
576 | ||
577 | /* Temporarily add a dash to the end of the echo string if it's not | |
578 | empty, so that it serves as a mini-prompt for the very next character. */ | |
579 | ||
580 | echo_dash () | |
581 | { | |
6c6083a9 KH |
582 | if (!current_perdisplay->immediate_echo |
583 | && current_perdisplay->echoptr == current_perdisplay->echobuf) | |
284f4730 | 584 | return; |
7a80a6f6 | 585 | /* Do nothing if we just printed a prompt. */ |
6c6083a9 KH |
586 | if (current_perdisplay->echo_after_prompt |
587 | == current_perdisplay->echoptr - current_perdisplay->echobuf) | |
7a80a6f6 | 588 | return; |
4bafa972 | 589 | /* Do nothing if not echoing at all. */ |
6c6083a9 | 590 | if (current_perdisplay->echoptr == 0) |
4bafa972 | 591 | return; |
284f4730 JB |
592 | |
593 | /* Put a dash at the end of the buffer temporarily, | |
594 | but make it go away when the next character is added. */ | |
6c6083a9 KH |
595 | current_perdisplay->echoptr[0] = '-'; |
596 | current_perdisplay->echoptr[1] = 0; | |
284f4730 JB |
597 | |
598 | echo (); | |
599 | } | |
600 | ||
601 | /* Display the current echo string, and begin echoing if not already | |
602 | doing so. */ | |
603 | ||
604 | echo () | |
605 | { | |
6c6083a9 | 606 | if (!current_perdisplay->immediate_echo) |
284f4730 JB |
607 | { |
608 | int i; | |
6c6083a9 | 609 | current_perdisplay->immediate_echo = 1; |
284f4730 JB |
610 | |
611 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
612 | { |
613 | Lisp_Object c; | |
614 | c = XVECTOR (this_command_keys)->contents[i]; | |
615 | if (! (EVENT_HAS_PARAMETERS (c) | |
616 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
617 | echo_char (c); | |
618 | } | |
284f4730 JB |
619 | echo_dash (); |
620 | } | |
621 | ||
622 | echoing = 1; | |
6c6083a9 | 623 | message1_nolog (current_perdisplay->echobuf); |
284f4730 JB |
624 | echoing = 0; |
625 | ||
626 | if (waiting_for_input && !NILP (Vquit_flag)) | |
627 | quit_throw_to_read_char (); | |
628 | } | |
629 | ||
630 | /* Turn off echoing, for the start of a new command. */ | |
631 | ||
632 | cancel_echoing () | |
633 | { | |
6c6083a9 KH |
634 | current_perdisplay->immediate_echo = 0; |
635 | current_perdisplay->echoptr = current_perdisplay->echobuf; | |
636 | current_perdisplay->echo_after_prompt = -1; | |
284f4730 JB |
637 | } |
638 | ||
639 | /* Return the length of the current echo string. */ | |
640 | ||
641 | static int | |
642 | echo_length () | |
643 | { | |
6c6083a9 | 644 | return current_perdisplay->echoptr - current_perdisplay->echobuf; |
284f4730 JB |
645 | } |
646 | ||
647 | /* Truncate the current echo message to its first LEN chars. | |
648 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 649 | switches frames while entering a key sequence. */ |
284f4730 JB |
650 | |
651 | static void | |
652 | echo_truncate (len) | |
653 | int len; | |
654 | { | |
6c6083a9 KH |
655 | current_perdisplay->echobuf[len] = '\0'; |
656 | current_perdisplay->echoptr = current_perdisplay->echobuf + len; | |
40932d1a | 657 | truncate_echo_area (len); |
284f4730 JB |
658 | } |
659 | ||
660 | \f | |
661 | /* Functions for manipulating this_command_keys. */ | |
662 | static void | |
663 | add_command_key (key) | |
664 | Lisp_Object key; | |
665 | { | |
6569cc8d JB |
666 | int size = XVECTOR (this_command_keys)->size; |
667 | ||
668 | if (this_command_key_count >= size) | |
284f4730 | 669 | { |
9b8eb840 | 670 | Lisp_Object new_keys; |
6569cc8d | 671 | |
9b8eb840 | 672 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
673 | bcopy (XVECTOR (this_command_keys)->contents, |
674 | XVECTOR (new_keys)->contents, | |
8f805655 | 675 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
676 | |
677 | this_command_keys = new_keys; | |
284f4730 | 678 | } |
6569cc8d JB |
679 | |
680 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
681 | } |
682 | \f | |
683 | Lisp_Object | |
684 | recursive_edit_1 () | |
685 | { | |
686 | int count = specpdl_ptr - specpdl; | |
687 | Lisp_Object val; | |
688 | ||
689 | if (command_loop_level > 0) | |
690 | { | |
691 | specbind (Qstandard_output, Qt); | |
692 | specbind (Qstandard_input, Qt); | |
693 | } | |
694 | ||
695 | val = command_loop (); | |
696 | if (EQ (val, Qt)) | |
697 | Fsignal (Qquit, Qnil); | |
698 | ||
cb5df6ae | 699 | return unbind_to (count, Qnil); |
284f4730 JB |
700 | } |
701 | ||
702 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 703 | |
284f4730 JB |
704 | record_auto_save () |
705 | { | |
51172b6d | 706 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 707 | } |
5846638c RS |
708 | |
709 | /* Make an auto save happen as soon as possible at command level. */ | |
710 | ||
711 | force_auto_save_soon () | |
712 | { | |
713 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
714 | |
715 | record_asynch_buffer_change (); | |
5846638c | 716 | } |
284f4730 | 717 | \f |
284f4730 JB |
718 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
719 | "Invoke the editor command loop recursively.\n\ | |
720 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
721 | that tells this function to return.\n\ | |
722 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
723 | This function is called by the editor initialization to begin editing.") | |
724 | () | |
725 | { | |
726 | int count = specpdl_ptr - specpdl; | |
727 | Lisp_Object val; | |
728 | ||
729 | command_loop_level++; | |
730 | update_mode_lines = 1; | |
731 | ||
732 | record_unwind_protect (recursive_edit_unwind, | |
733 | (command_loop_level | |
734 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
735 | ? Fcurrent_buffer () | |
736 | : Qnil); | |
737 | recursive_edit_1 (); | |
738 | return unbind_to (count, Qnil); | |
739 | } | |
740 | ||
741 | Lisp_Object | |
742 | recursive_edit_unwind (buffer) | |
743 | Lisp_Object buffer; | |
744 | { | |
745 | if (!NILP (buffer)) | |
746 | Fset_buffer (buffer); | |
747 | ||
748 | command_loop_level--; | |
749 | update_mode_lines = 1; | |
750 | return Qnil; | |
751 | } | |
752 | \f | |
604ccd1d KH |
753 | #ifdef MULTI_PERDISPLAY |
754 | static void | |
755 | unlock_display () | |
756 | { | |
757 | if (CONSP (Vunread_command_events)) | |
758 | current_perdisplay->kbd_queue | |
759 | = nconc2 (Vunread_command_events, current_perdisplay->kbd_queue); | |
760 | Vunread_command_events = Qnil; | |
761 | current_perdisplay = 0; | |
762 | display_locked = 0; | |
763 | } | |
764 | #endif | |
765 | ||
284f4730 JB |
766 | Lisp_Object |
767 | cmd_error (data) | |
768 | Lisp_Object data; | |
a1341f75 | 769 | { |
a9f16aa9 KH |
770 | Lisp_Object old_level, old_length; |
771 | ||
a1341f75 RS |
772 | Vstandard_output = Qt; |
773 | Vstandard_input = Qt; | |
774 | Vexecuting_macro = Qnil; | |
217e16c1 KH |
775 | if (current_perdisplay) |
776 | { | |
777 | clear_prefix_arg (); | |
778 | cancel_echoing (); | |
779 | } | |
a9f16aa9 KH |
780 | |
781 | /* Avoid unquittable loop if data contains a circular list. */ | |
782 | old_level = Vprint_level; | |
783 | old_length = Vprint_length; | |
784 | XSETFASTINT(Vprint_level, 10); | |
785 | XSETFASTINT(Vprint_length, 10); | |
a1341f75 | 786 | cmd_error_internal (data, 0); |
a9f16aa9 KH |
787 | Vprint_level = old_level; |
788 | Vprint_length = old_length; | |
a1341f75 RS |
789 | |
790 | Vquit_flag = Qnil; | |
791 | ||
792 | Vinhibit_quit = Qnil; | |
ff4b06d3 | 793 | #ifdef MULTI_PERDISPLAY |
217e16c1 KH |
794 | if (current_perdisplay) |
795 | unlock_display (); | |
ff4b06d3 | 796 | #endif |
a1341f75 RS |
797 | |
798 | return make_number (0); | |
799 | } | |
800 | ||
801 | cmd_error_internal (data, context) | |
802 | Lisp_Object data; | |
803 | char *context; | |
284f4730 JB |
804 | { |
805 | Lisp_Object errmsg, tail, errname, file_error; | |
806 | Lisp_Object stream; | |
807 | struct gcpro gcpro1; | |
808 | int i; | |
809 | ||
810 | Vquit_flag = Qnil; | |
811 | Vinhibit_quit = Qt; | |
284f4730 JB |
812 | echo_area_glyphs = 0; |
813 | ||
ff11dfa1 | 814 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
815 | yet, or we're not interactive, it's best to dump this message out |
816 | to stderr and exit. */ | |
ff11dfa1 | 817 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
818 | || noninteractive) |
819 | stream = Qexternal_debugging_output; | |
820 | else | |
821 | { | |
822 | Fdiscard_input (); | |
823 | bitch_at_user (); | |
824 | stream = Qt; | |
825 | } | |
826 | ||
a1341f75 RS |
827 | if (context != 0) |
828 | write_string_1 (context, -1, stream); | |
829 | ||
284f4730 JB |
830 | errname = Fcar (data); |
831 | ||
832 | if (EQ (errname, Qerror)) | |
833 | { | |
834 | data = Fcdr (data); | |
835 | if (!CONSP (data)) data = Qnil; | |
836 | errmsg = Fcar (data); | |
837 | file_error = Qnil; | |
838 | } | |
839 | else | |
840 | { | |
841 | errmsg = Fget (errname, Qerror_message); | |
842 | file_error = Fmemq (Qfile_error, | |
843 | Fget (errname, Qerror_conditions)); | |
844 | } | |
845 | ||
846 | /* Print an error message including the data items. | |
847 | This is done by printing it into a scratch buffer | |
848 | and then making a copy of the text in the buffer. */ | |
849 | ||
850 | if (!CONSP (data)) data = Qnil; | |
851 | tail = Fcdr (data); | |
852 | GCPRO1 (tail); | |
853 | ||
854 | /* For file-error, make error message by concatenating | |
855 | all the data items. They are all strings. */ | |
856 | if (!NILP (file_error) && !NILP (tail)) | |
857 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
858 | ||
8c18cbfb | 859 | if (STRINGP (errmsg)) |
284f4730 JB |
860 | Fprinc (errmsg, stream); |
861 | else | |
862 | write_string_1 ("peculiar error", -1, stream); | |
863 | ||
864 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
865 | { | |
866 | write_string_1 (i ? ", " : ": ", 2, stream); | |
867 | if (!NILP (file_error)) | |
868 | Fprinc (Fcar (tail), stream); | |
869 | else | |
870 | Fprin1 (Fcar (tail), stream); | |
871 | } | |
872 | UNGCPRO; | |
873 | ||
ff11dfa1 | 874 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 875 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 876 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
877 | || noninteractive) |
878 | { | |
879 | Fterpri (stream); | |
880 | Fkill_emacs (make_number (-1)); | |
881 | } | |
284f4730 JB |
882 | } |
883 | \f | |
884 | Lisp_Object command_loop_1 (); | |
885 | Lisp_Object command_loop_2 (); | |
886 | Lisp_Object top_level_1 (); | |
887 | ||
888 | /* Entry to editor-command-loop. | |
889 | This level has the catches for exiting/returning to editor command loop. | |
890 | It returns nil to exit recursive edit, t to abort it. */ | |
891 | ||
892 | Lisp_Object | |
893 | command_loop () | |
894 | { | |
895 | if (command_loop_level > 0 || minibuf_level > 0) | |
896 | { | |
897 | return internal_catch (Qexit, command_loop_2, Qnil); | |
898 | } | |
899 | else | |
900 | while (1) | |
901 | { | |
902 | internal_catch (Qtop_level, top_level_1, Qnil); | |
903 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
904 | ||
905 | /* End of file in -batch run causes exit here. */ | |
906 | if (noninteractive) | |
907 | Fkill_emacs (Qt); | |
908 | } | |
909 | } | |
910 | ||
911 | /* Here we catch errors in execution of commands within the | |
912 | editing loop, and reenter the editing loop. | |
913 | When there is an error, cmd_error runs and returns a non-nil | |
914 | value to us. A value of nil means that cmd_loop_1 itself | |
915 | returned due to end of file (or end of kbd macro). */ | |
916 | ||
917 | Lisp_Object | |
918 | command_loop_2 () | |
919 | { | |
920 | register Lisp_Object val; | |
921 | ||
922 | do | |
923 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
924 | while (!NILP (val)); | |
925 | ||
926 | return Qnil; | |
927 | } | |
928 | ||
929 | Lisp_Object | |
930 | top_level_2 () | |
931 | { | |
932 | return Feval (Vtop_level); | |
933 | } | |
934 | ||
935 | Lisp_Object | |
936 | top_level_1 () | |
937 | { | |
938 | /* On entry to the outer level, run the startup file */ | |
939 | if (!NILP (Vtop_level)) | |
940 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
941 | else if (!NILP (Vpurify_flag)) | |
942 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
943 | else | |
944 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
945 | return Qnil; | |
946 | } | |
947 | ||
948 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
949 | "Exit all recursive editing levels.") | |
950 | () | |
951 | { | |
952 | Fthrow (Qtop_level, Qnil); | |
953 | } | |
954 | ||
955 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
956 | "Exit from the innermost recursive edit or minibuffer.") | |
957 | () | |
958 | { | |
959 | if (command_loop_level > 0 || minibuf_level > 0) | |
960 | Fthrow (Qexit, Qnil); | |
961 | ||
962 | error ("No recursive edit is in progress"); | |
963 | } | |
964 | ||
965 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
966 | "Abort the command that requested this recursive edit or minibuffer input.") | |
967 | () | |
968 | { | |
969 | if (command_loop_level > 0 || minibuf_level > 0) | |
970 | Fthrow (Qexit, Qt); | |
971 | ||
972 | error ("No recursive edit is in progress"); | |
973 | } | |
974 | \f | |
975 | /* This is the actual command reading loop, | |
976 | sans error-handling encapsulation. */ | |
977 | ||
978 | Lisp_Object Fcommand_execute (); | |
979 | static int read_key_sequence (); | |
1c9784c9 | 980 | static void safe_run_hooks (); |
284f4730 JB |
981 | |
982 | Lisp_Object | |
983 | command_loop_1 () | |
984 | { | |
48e416d4 | 985 | Lisp_Object cmd, tem; |
284f4730 JB |
986 | int lose; |
987 | int nonundocount; | |
988 | Lisp_Object keybuf[30]; | |
989 | int i; | |
990 | int no_redisplay; | |
991 | int no_direct; | |
86e5706b RS |
992 | int prev_modiff; |
993 | struct buffer *prev_buffer; | |
bded54dd | 994 | #ifdef MULTI_PERDISPLAY |
604ccd1d | 995 | int was_locked = display_locked; |
bded54dd | 996 | #endif |
284f4730 | 997 | |
86e5706b | 998 | Vdeactivate_mark = Qnil; |
284f4730 | 999 | waiting_for_input = 0; |
267de7a1 KH |
1000 | if (current_perdisplay) |
1001 | cancel_echoing (); | |
284f4730 | 1002 | |
284f4730 JB |
1003 | nonundocount = 0; |
1004 | no_redisplay = 0; | |
1005 | this_command_key_count = 0; | |
1006 | ||
a612e298 RS |
1007 | /* Make sure this hook runs after commands that get errors and |
1008 | throw to top level. */ | |
a98ea3f9 RS |
1009 | /* Note that the value cell will never directly contain nil |
1010 | if the symbol is a local variable. */ | |
1011 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1012 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 1013 | |
8a792f3a RS |
1014 | if (!NILP (Vdeferred_action_list)) |
1015 | call0 (Vdeferred_action_function); | |
1016 | ||
51d5a2c9 RS |
1017 | /* Do this after running Vpost_command_hook, for consistency. */ |
1018 | last_command = this_command; | |
1019 | ||
284f4730 JB |
1020 | while (1) |
1021 | { | |
284f4730 JB |
1022 | /* Make sure the current window's buffer is selected. */ |
1023 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1024 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1025 | ||
1026 | /* Display any malloc warning that just came out. Use while because | |
1027 | displaying one warning can cause another. */ | |
1028 | ||
1029 | while (pending_malloc_warning) | |
1030 | display_malloc_warning (); | |
1031 | ||
1032 | no_direct = 0; | |
1033 | ||
86e5706b RS |
1034 | Vdeactivate_mark = Qnil; |
1035 | ||
284f4730 | 1036 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1037 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1038 | |
1039 | if (minibuf_level && echo_area_glyphs) | |
1040 | { | |
f1bed6d8 RS |
1041 | /* Bind inhibit-quit to t so that C-g gets read in |
1042 | rather than quitting back to the minibuffer. */ | |
1043 | int count = specpdl_ptr - specpdl; | |
1044 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1045 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1046 | unbind_to (count, Qnil); |
f1bed6d8 | 1047 | |
284f4730 JB |
1048 | echo_area_glyphs = 0; |
1049 | no_direct = 1; | |
1050 | if (!NILP (Vquit_flag)) | |
1051 | { | |
1052 | Vquit_flag = Qnil; | |
24597608 | 1053 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1054 | } |
1055 | } | |
1056 | ||
1057 | #ifdef C_ALLOCA | |
ff4b06d3 | 1058 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1059 | /* Since we can free the most stuff here. */ |
1060 | #endif /* C_ALLOCA */ | |
1061 | ||
8f805655 | 1062 | #if 0 |
ff11dfa1 | 1063 | #ifdef MULTI_FRAME |
8f805655 JB |
1064 | /* Select the frame that the last event came from. Usually, |
1065 | switch-frame events will take care of this, but if some lisp | |
1066 | code swallows a switch-frame event, we'll fix things up here. | |
1067 | Is this a good idea? */ | |
8c18cbfb | 1068 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1069 | && XFRAME (internal_last_event_frame) != selected_frame) |
1070 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1071 | #endif |
284f4730 | 1072 | #endif |
48e416d4 RS |
1073 | /* If it has changed current-menubar from previous value, |
1074 | really recompute the menubar from the value. */ | |
a646e520 RS |
1075 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1076 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1077 | call0 (Qrecompute_lucid_menubar); |
1078 | ||
8f805655 | 1079 | /* Read next key sequence; i gets its length. */ |
ce98e608 KH |
1080 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], |
1081 | Qnil, 0, 1); | |
8f805655 JB |
1082 | |
1083 | ++num_input_keys; | |
1084 | ||
284f4730 JB |
1085 | /* Now we have read a key sequence of length I, |
1086 | or else I is 0 and we found end of file. */ | |
1087 | ||
1088 | if (i == 0) /* End of file -- happens only in */ | |
1089 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1090 | /* -1 means read_key_sequence got a menu that was rejected. |
1091 | Just loop around and read another command. */ | |
1092 | if (i == -1) | |
1093 | { | |
1094 | cancel_echoing (); | |
1095 | this_command_key_count = 0; | |
ff4b06d3 | 1096 | goto finalize; |
dcc408a0 | 1097 | } |
284f4730 | 1098 | |
284f4730 JB |
1099 | last_command_char = keybuf[i - 1]; |
1100 | ||
75c0b143 RS |
1101 | /* If the previous command tried to force a specific window-start, |
1102 | forget about that, in case this command moves point far away | |
1103 | from that position. */ | |
1104 | XWINDOW (selected_window)->force_start = Qnil; | |
1105 | ||
284f4730 JB |
1106 | cmd = read_key_sequence_cmd; |
1107 | if (!NILP (Vexecuting_macro)) | |
1108 | { | |
1109 | if (!NILP (Vquit_flag)) | |
1110 | { | |
1111 | Vexecuting_macro = Qt; | |
1112 | QUIT; /* Make some noise. */ | |
1113 | /* Will return since macro now empty. */ | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1118 | cases identified below that set no_redisplay to 1. |
1119 | (actually, there's currently no way to prevent the redisplay, | |
1120 | and no_redisplay is ignored. | |
beecf6a1 | 1121 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1122 | no_redisplay = 0; |
1123 | ||
86e5706b RS |
1124 | prev_buffer = current_buffer; |
1125 | prev_modiff = MODIFF; | |
8746da95 | 1126 | last_point_position = PT; |
18cd2eeb | 1127 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1128 | |
4c52b668 KH |
1129 | /* If we're building a prefix argument, override minus and digits. */ |
1130 | if (current_perdisplay->prefix_partial && i == 1 && NATNUMP (keybuf[0])) | |
1131 | { | |
1132 | if (XFASTINT (keybuf[0]) == '-' | |
1133 | && NILP (current_perdisplay->prefix_value)) | |
1134 | cmd = Qnegative_argument; | |
1135 | else if (XFASTINT (keybuf[0]) >= '0' && XFASTINT (keybuf[0]) <= '9') | |
1136 | cmd = Qdigit_argument; | |
1137 | } | |
1138 | ||
284f4730 JB |
1139 | /* Execute the command. */ |
1140 | ||
86e5706b | 1141 | this_command = cmd; |
a98ea3f9 RS |
1142 | /* Note that the value cell will never directly contain nil |
1143 | if the symbol is a local variable. */ | |
1144 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1145 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1146 | |
258bf746 | 1147 | if (NILP (this_command)) |
284f4730 JB |
1148 | { |
1149 | /* nil means key is undefined. */ | |
1150 | bitch_at_user (); | |
8066f1a1 | 1151 | current_perdisplay->defining_kbd_macro = Qnil; |
284f4730 | 1152 | update_mode_lines = 1; |
4c52b668 | 1153 | clear_prefix_arg (); |
284f4730 JB |
1154 | } |
1155 | else | |
1156 | { | |
5169b66d | 1157 | current_prefix_partial = current_perdisplay->prefix_partial; |
4c52b668 KH |
1158 | if (current_perdisplay->prefix_partial) |
1159 | finalize_prefix_arg (); | |
1160 | ||
1161 | if (NILP (Vprefix_arg) && ! no_direct) | |
284f4730 JB |
1162 | { |
1163 | /* Recognize some common commands in common situations and | |
1164 | do them directly. */ | |
8001d352 | 1165 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1166 | { |
1167 | struct Lisp_Vector *dp | |
1168 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1169 | lose = FETCH_CHAR (PT); |
1170 | SET_PT (PT + 1); | |
0f7a8fee | 1171 | if ((dp |
82ba47d7 | 1172 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1173 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1174 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1175 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1176 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1177 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1178 | >= MODIFF) | |
1179 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1180 | == PT - 1) |
284f4730 JB |
1181 | && !windows_or_buffers_changed |
1182 | && EQ (current_buffer->selective_display, Qnil) | |
1183 | && !detect_input_pending () | |
1184 | && NILP (Vexecuting_macro)) | |
1185 | no_redisplay = direct_output_forward_char (1); | |
1186 | goto directly_done; | |
1187 | } | |
8001d352 | 1188 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1189 | { |
1190 | struct Lisp_Vector *dp | |
1191 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1192 | SET_PT (PT - 1); |
1193 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1194 | if ((dp |
ca873d73 | 1195 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1196 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1197 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1198 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1199 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1200 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1201 | >= MODIFF) | |
1202 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1203 | == PT + 1) |
284f4730 JB |
1204 | && !windows_or_buffers_changed |
1205 | && EQ (current_buffer->selective_display, Qnil) | |
1206 | && !detect_input_pending () | |
1207 | && NILP (Vexecuting_macro)) | |
1208 | no_redisplay = direct_output_forward_char (-1); | |
1209 | goto directly_done; | |
1210 | } | |
258bf746 | 1211 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1212 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1213 | && INTEGERP (last_command_char)) |
284f4730 JB |
1214 | { |
1215 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1216 | int value; |
284f4730 | 1217 | |
fc9cce4e RS |
1218 | if (NILP (Vexecuting_macro) |
1219 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1220 | { |
1221 | if (!nonundocount || nonundocount >= 20) | |
1222 | { | |
1223 | Fundo_boundary (); | |
1224 | nonundocount = 0; | |
1225 | } | |
1226 | nonundocount++; | |
1227 | } | |
fc9cce4e RS |
1228 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1229 | < MODIFF) | |
1230 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1231 | != PT) | |
4c61f38e | 1232 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1233 | || windows_or_buffers_changed |
1234 | || !EQ (current_buffer->selective_display, Qnil) | |
1235 | || detect_input_pending () | |
1236 | || !NILP (Vexecuting_macro)); | |
1237 | value = internal_self_insert (c, 0); | |
1238 | if (value) | |
1239 | lose = 1; | |
1240 | if (value == 2) | |
1241 | nonundocount = 0; | |
1242 | ||
1243 | if (!lose | |
1244 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1245 | { |
1246 | struct Lisp_Vector *dp | |
1247 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1248 | int lose = c; |
284f4730 | 1249 | |
0f7a8fee JB |
1250 | if (dp) |
1251 | { | |
9b8eb840 | 1252 | Lisp_Object obj; |
0f7a8fee | 1253 | |
9b8eb840 | 1254 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1255 | if (NILP (obj)) |
8e91f441 RS |
1256 | { |
1257 | /* Do it only for char codes | |
1258 | that by default display as themselves. */ | |
1259 | if (lose >= 0x20 && lose <= 0x7e) | |
1260 | no_redisplay = direct_output_for_insert (lose); | |
1261 | } | |
8c18cbfb | 1262 | else if (VECTORP (obj) |
054c8675 | 1263 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1264 | && (obj = XVECTOR (obj)->contents[0], |
1265 | INTEGERP (obj)) | |
054c8675 RS |
1266 | /* Insist face not specified in glyph. */ |
1267 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1268 | no_redisplay |
1269 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1270 | } |
1271 | else | |
1272 | { | |
1273 | if (lose >= 0x20 && lose <= 0x7e) | |
1274 | no_redisplay = direct_output_for_insert (lose); | |
1275 | } | |
284f4730 JB |
1276 | } |
1277 | goto directly_done; | |
1278 | } | |
1279 | } | |
1280 | ||
1281 | /* Here for a command that isn't executed directly */ | |
1282 | ||
1283 | nonundocount = 0; | |
4c52b668 | 1284 | if (NILP (Vprefix_arg)) |
284f4730 | 1285 | Fundo_boundary (); |
258bf746 | 1286 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1287 | |
284f4730 | 1288 | } |
a764a753 | 1289 | directly_done: ; |
284f4730 | 1290 | |
a98ea3f9 RS |
1291 | /* Note that the value cell will never directly contain nil |
1292 | if the symbol is a local variable. */ | |
1293 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1294 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1295 | |
8a792f3a | 1296 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1297 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1298 | |
284f4730 JB |
1299 | /* If there is a prefix argument, |
1300 | 1) We don't want last_command to be ``universal-argument'' | |
1301 | (that would be dumb), so don't set last_command, | |
1302 | 2) we want to leave echoing on so that the prefix will be | |
1303 | echoed as part of this key sequence, so don't call | |
1304 | cancel_echoing, and | |
1305 | 3) we want to leave this_command_key_count non-zero, so that | |
1306 | read_char will realize that it is re-reading a character, and | |
1307 | not echo it a second time. */ | |
c4288b3a | 1308 | if (NILP (Vprefix_arg) && !current_perdisplay->prefix_partial) |
284f4730 JB |
1309 | { |
1310 | last_command = this_command; | |
1311 | cancel_echoing (); | |
1312 | this_command_key_count = 0; | |
1313 | } | |
86e5706b | 1314 | |
88ce066e | 1315 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1316 | { |
1317 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1318 | { | |
1319 | current_buffer->mark_active = Qnil; | |
1320 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1321 | } | |
1322 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1323 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1324 | } | |
ff4b06d3 KH |
1325 | |
1326 | finalize: | |
1327 | /* Install chars successfully executed in kbd macro. */ | |
1328 | ||
c4288b3a KH |
1329 | if (!NILP (current_perdisplay->defining_kbd_macro) && NILP (Vprefix_arg) |
1330 | && !current_perdisplay->prefix_partial) | |
ff4b06d3 KH |
1331 | finalize_kbd_macro_chars (); |
1332 | ||
1333 | #ifdef MULTI_PERDISPLAY | |
604ccd1d KH |
1334 | if (!was_locked) |
1335 | unlock_display (); | |
ff4b06d3 | 1336 | #endif |
284f4730 JB |
1337 | } |
1338 | } | |
1c9784c9 KH |
1339 | |
1340 | /* If we get an error while running the hook, cause the hook variable | |
1341 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1342 | to mysteriously evaporate. */ | |
1343 | static void | |
1344 | safe_run_hooks (hook) | |
a98ea3f9 | 1345 | Lisp_Object hook; |
1c9784c9 | 1346 | { |
68553292 | 1347 | Lisp_Object value; |
1c9784c9 KH |
1348 | int count = specpdl_ptr - specpdl; |
1349 | specbind (Qinhibit_quit, Qt); | |
1350 | ||
a98ea3f9 RS |
1351 | /* We read and set the variable with functions, |
1352 | in case it's buffer-local. */ | |
68553292 | 1353 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1354 | Fset (hook, Qnil); |
1c9784c9 | 1355 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1356 | Fset (hook, value); |
1c9784c9 KH |
1357 | |
1358 | unbind_to (count, Qnil); | |
1359 | } | |
284f4730 JB |
1360 | \f |
1361 | /* Number of seconds between polling for input. */ | |
1362 | int polling_period; | |
1363 | ||
eb8c3be9 | 1364 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1365 | int poll_suppress_count; |
1366 | ||
36922b18 | 1367 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1368 | int polling_for_input; |
1369 | ||
36922b18 RS |
1370 | #ifdef POLL_FOR_INPUT |
1371 | ||
284f4730 JB |
1372 | /* Handle an alarm once each second and read pending input |
1373 | so as to handle a C-g if it comces in. */ | |
1374 | ||
1375 | SIGTYPE | |
91c049d4 RS |
1376 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1377 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1378 | { |
9ac0d9e0 JB |
1379 | if (interrupt_input_blocked == 0 |
1380 | && !waiting_for_input) | |
1381 | read_avail_input (0); | |
284f4730 JB |
1382 | signal (SIGALRM, input_poll_signal); |
1383 | alarm (polling_period); | |
1384 | } | |
1385 | ||
1386 | #endif | |
1387 | ||
1388 | /* Begin signals to poll for input, if they are appropriate. | |
1389 | This function is called unconditionally from various places. */ | |
1390 | ||
1391 | start_polling () | |
1392 | { | |
1393 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1394 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1395 | { |
1396 | poll_suppress_count--; | |
1397 | if (poll_suppress_count == 0) | |
1398 | { | |
1399 | signal (SIGALRM, input_poll_signal); | |
1400 | polling_for_input = 1; | |
1401 | alarm (polling_period); | |
1402 | } | |
1403 | } | |
1404 | #endif | |
1405 | } | |
1406 | ||
1d3195db RS |
1407 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1408 | ||
1409 | int | |
1410 | input_polling_used () | |
1411 | { | |
1412 | #ifdef POLL_FOR_INPUT | |
1413 | return read_socket_hook && !interrupt_input; | |
1414 | #else | |
1415 | return 0; | |
1416 | #endif | |
1417 | } | |
1418 | ||
284f4730 JB |
1419 | /* Turn off polling. */ |
1420 | ||
1421 | stop_polling () | |
1422 | { | |
1423 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1424 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1425 | { |
1426 | if (poll_suppress_count == 0) | |
1427 | { | |
1428 | polling_for_input = 0; | |
1429 | alarm (0); | |
1430 | } | |
1431 | poll_suppress_count++; | |
1432 | } | |
1433 | #endif | |
1434 | } | |
fe8aeef3 RS |
1435 | |
1436 | /* Set the value of poll_suppress_count to COUNT | |
1437 | and start or stop polling accordingly. */ | |
1438 | ||
1439 | void | |
1440 | set_poll_suppress_count (count) | |
1441 | int count; | |
1442 | { | |
1443 | #ifdef POLL_FOR_INPUT | |
1444 | if (count == 0 && poll_suppress_count != 0) | |
1445 | { | |
1446 | poll_suppress_count = 1; | |
1447 | start_polling (); | |
1448 | } | |
1449 | else if (count != 0 && poll_suppress_count == 0) | |
1450 | { | |
1451 | stop_polling (); | |
1452 | } | |
1453 | poll_suppress_count = count; | |
1454 | #endif | |
1455 | } | |
f4eef8b4 | 1456 | |
d0a57728 RS |
1457 | /* Bind polling_period to a value at least N. |
1458 | But don't decrease it. */ | |
1459 | ||
f4eef8b4 RS |
1460 | bind_polling_period (n) |
1461 | int n; | |
1462 | { | |
1463 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1464 | int new = polling_period; |
1465 | ||
1466 | if (n > new) | |
1467 | new = n; | |
1468 | ||
f4eef8b4 | 1469 | stop_polling (); |
d0a57728 RS |
1470 | specbind (Qpolling_period, make_number (new)); |
1471 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1472 | start_polling (); |
1473 | #endif | |
1474 | } | |
284f4730 | 1475 | \f |
6da3dd3a RS |
1476 | /* Apply the control modifier to CHARACTER. */ |
1477 | ||
faf5e407 JB |
1478 | int |
1479 | make_ctrl_char (c) | |
1480 | int c; | |
1481 | { | |
d205953b JB |
1482 | /* Save the upper bits here. */ |
1483 | int upper = c & ~0177; | |
1484 | ||
1485 | c &= 0177; | |
1486 | ||
1487 | /* Everything in the columns containing the upper-case letters | |
1488 | denotes a control character. */ | |
1489 | if (c >= 0100 && c < 0140) | |
1490 | { | |
1491 | int oc = c; | |
1492 | c &= ~0140; | |
1493 | /* Set the shift modifier for a control char | |
1494 | made from a shifted letter. But only for letters! */ | |
1495 | if (oc >= 'A' && oc <= 'Z') | |
1496 | c |= shift_modifier; | |
1497 | } | |
1498 | ||
1499 | /* The lower-case letters denote control characters too. */ | |
1500 | else if (c >= 'a' && c <= 'z') | |
1501 | c &= ~0140; | |
1502 | ||
1503 | /* Include the bits for control and shift | |
1504 | only if the basic ASCII code can't indicate them. */ | |
1505 | else if (c >= ' ') | |
1506 | c |= ctrl_modifier; | |
1507 | ||
1508 | /* Replace the high bits. */ | |
1509 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1510 | |
1511 | return c; | |
1512 | } | |
1513 | ||
1514 | ||
1515 | \f | |
284f4730 JB |
1516 | /* Input of single characters from keyboard */ |
1517 | ||
1518 | Lisp_Object print_help (); | |
1519 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1520 | static void record_char (); |
284f4730 | 1521 | |
bded54dd | 1522 | #ifdef MULTI_PERDISPLAY |
beecf6a1 | 1523 | static jmp_buf wrong_display_jmpbuf; |
bded54dd | 1524 | #endif |
beecf6a1 | 1525 | |
284f4730 JB |
1526 | /* read a character from the keyboard; call the redisplay if needed */ |
1527 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1528 | -1 means do not do redisplay, but do do autosaving. | |
1529 | 1 means do both. */ | |
1530 | ||
7d6de002 RS |
1531 | /* The arguments MAPS and NMAPS are for menu prompting. |
1532 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1533 | ||
1534 | PREV_EVENT is the previous input event, or nil if we are reading | |
1535 | the first event of a key sequence. | |
1536 | ||
6569cc8d JB |
1537 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1538 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1539 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1540 | ||
1541 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1542 | |
284f4730 | 1543 | Lisp_Object |
7d6de002 | 1544 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1545 | int commandflag; |
7d6de002 RS |
1546 | int nmaps; |
1547 | Lisp_Object *maps; | |
1548 | Lisp_Object prev_event; | |
1549 | int *used_mouse_menu; | |
284f4730 JB |
1550 | { |
1551 | register Lisp_Object c; | |
1552 | int count; | |
1553 | jmp_buf save_jump; | |
a1341f75 | 1554 | int key_already_recorded = 0; |
e4fe371d RS |
1555 | Lisp_Object also_record; |
1556 | also_record = Qnil; | |
284f4730 | 1557 | |
24597608 | 1558 | if (CONSP (Vunread_command_events)) |
284f4730 | 1559 | { |
24597608 RS |
1560 | c = XCONS (Vunread_command_events)->car; |
1561 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1562 | |
284f4730 JB |
1563 | if (this_command_key_count == 0) |
1564 | goto reread_first; | |
1565 | else | |
1566 | goto reread; | |
1567 | } | |
1568 | ||
86e5706b RS |
1569 | if (unread_command_char != -1) |
1570 | { | |
18cd2eeb | 1571 | XSETINT (c, unread_command_char); |
86e5706b RS |
1572 | unread_command_char = -1; |
1573 | ||
1574 | if (this_command_key_count == 0) | |
1575 | goto reread_first; | |
1576 | else | |
1577 | goto reread; | |
1578 | } | |
1579 | ||
284f4730 JB |
1580 | if (!NILP (Vexecuting_macro)) |
1581 | { | |
07d2b8de | 1582 | #ifdef MULTI_FRAME |
fce33686 JB |
1583 | /* We set this to Qmacro; since that's not a frame, nobody will |
1584 | try to switch frames on us, and the selected window will | |
1585 | remain unchanged. | |
1586 | ||
1587 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1588 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1589 | real event came from. Normally, a switch-frame event selects |
1590 | internal_last_event_frame after each command is read, but | |
1591 | events read from a macro should never cause a new frame to be | |
1592 | selected. */ | |
4c52b668 | 1593 | Vlast_event_frame = internal_last_event_frame = Qmacro; |
07d2b8de | 1594 | #endif |
fce33686 | 1595 | |
663258f2 JB |
1596 | /* Exit the macro if we are at the end. |
1597 | Also, some things replace the macro with t | |
1598 | to force an early exit. */ | |
1599 | if (EQ (Vexecuting_macro, Qt) | |
1600 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1601 | { |
18cd2eeb | 1602 | XSETINT (c, -1); |
284f4730 JB |
1603 | return c; |
1604 | } | |
1605 | ||
1606 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
8c18cbfb | 1607 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1608 | && (XINT (c) & 0x80)) |
bb9e9bed | 1609 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1610 | |
284f4730 JB |
1611 | executing_macro_index++; |
1612 | ||
1613 | goto from_macro; | |
1614 | } | |
1615 | ||
cd21b839 JB |
1616 | if (!NILP (unread_switch_frame)) |
1617 | { | |
1618 | c = unread_switch_frame; | |
1619 | unread_switch_frame = Qnil; | |
1620 | ||
1621 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1622 | again, so we go to reread_first, rather than reread. */ |
1623 | goto reread_first; | |
cd21b839 JB |
1624 | } |
1625 | ||
3f9929bf RS |
1626 | /* Don't bother updating menu bars while doing mouse tracking. |
1627 | We get events very rapidly then, and the menu bar won't be changing. | |
1628 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1629 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1630 | prepare_menu_bars (); |
1631 | ||
284f4730 | 1632 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1633 | save_getcjmp (save_jump); |
284f4730 JB |
1634 | |
1635 | stop_polling (); | |
1636 | ||
1637 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1638 | redisplay (); | |
1639 | ||
1640 | if (_setjmp (getcjmp)) | |
1641 | { | |
18cd2eeb | 1642 | XSETINT (c, quit_char); |
07d2b8de | 1643 | #ifdef MULTI_FRAME |
4c52b668 KH |
1644 | XSETFRAME (internal_last_event_frame, selected_frame); |
1645 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1646 | #endif |
04904c29 RS |
1647 | /* If we report the quit char as an event, |
1648 | don't do so more than once. */ | |
1649 | if (!NILP (Vinhibit_quit)) | |
1650 | Vquit_flag = Qnil; | |
284f4730 | 1651 | |
284f4730 JB |
1652 | goto non_reread; |
1653 | } | |
1654 | ||
604ccd1d KH |
1655 | if (current_perdisplay) |
1656 | { | |
1657 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1658 | if (echo_area_glyphs && *echo_area_glyphs | |
1659 | && echo_area_glyphs != current_perdisplay->echobuf) | |
1660 | cancel_echoing (); | |
1661 | else | |
1662 | /* If already echoing, continue. */ | |
1663 | echo_dash (); | |
1664 | } | |
284f4730 | 1665 | |
8150596a RS |
1666 | /* Try reading a character via menu prompting in the minibuf. |
1667 | Try this before the sit-for, because the sit-for | |
1668 | would do the wrong thing if we are supposed to do | |
1669 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1670 | after a mouse event so don't try a minibuf menu. */ | |
1671 | c = Qnil; | |
24597608 RS |
1672 | if (nmaps > 0 && INTERACTIVE |
1673 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1674 | /* Don't bring up a menu if we already have another event. */ | |
1675 | && NILP (Vunread_command_events) | |
1676 | && unread_command_char < 0 | |
b8556aee | 1677 | && !detect_input_pending ()) |
8150596a RS |
1678 | { |
1679 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1680 | if (! NILP (c)) |
a1341f75 RS |
1681 | { |
1682 | key_already_recorded = 1; | |
1683 | goto non_reread; | |
1684 | } | |
8150596a RS |
1685 | } |
1686 | ||
284f4730 JB |
1687 | /* If in middle of key sequence and minibuffer not active, |
1688 | start echoing if enough time elapses. */ | |
604ccd1d KH |
1689 | if (current_perdisplay |
1690 | && minibuf_level == 0 | |
1691 | && !current_perdisplay->immediate_echo | |
6c6083a9 | 1692 | && this_command_key_count > 0 |
27203ead | 1693 | && ! noninteractive |
284f4730 JB |
1694 | && echo_keystrokes > 0 |
1695 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1696 | { | |
1697 | Lisp_Object tem0; | |
1698 | ||
7d6de002 RS |
1699 | /* After a mouse event, start echoing right away. |
1700 | This is because we are probably about to display a menu, | |
1701 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1702 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1703 | echo (); |
7d6de002 RS |
1704 | else |
1705 | { | |
1706 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1707 | if (EQ (tem0, Qt)) | |
1708 | echo (); | |
1709 | } | |
284f4730 JB |
1710 | } |
1711 | ||
1712 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1713 | ||
1714 | if (commandflag != 0 | |
1715 | && auto_save_interval > 0 | |
51172b6d | 1716 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1717 | && !detect_input_pending ()) |
1718 | { | |
1719 | jmp_buf temp; | |
1720 | save_getcjmp (temp); | |
1721 | Fdo_auto_save (Qnil, Qnil); | |
ef8fd672 RS |
1722 | /* Hooks can actually change some buffers in auto save. */ |
1723 | redisplay (); | |
284f4730 JB |
1724 | restore_getcjmp (temp); |
1725 | } | |
1726 | ||
8150596a | 1727 | /* Try reading using an X menu. |
24597608 RS |
1728 | This is never confused with reading using the minibuf |
1729 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1730 | does not pass on any keymaps. */ | |
1731 | if (nmaps > 0 && INTERACTIVE | |
1732 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1733 | /* Don't bring up a menu if we already have another event. */ | |
1734 | && NILP (Vunread_command_events) | |
b8556aee | 1735 | && unread_command_char < 0) |
8150596a | 1736 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1737 | |
284f4730 JB |
1738 | /* Slow down auto saves logarithmically in size of current buffer, |
1739 | and garbage collect while we're at it. */ | |
26c1639e | 1740 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1741 | { |
1742 | int delay_level, buffer_size; | |
1743 | ||
1744 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1745 | last_non_minibuf_size = Z - BEG; | |
1746 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1747 | delay_level = 0; | |
1748 | while (buffer_size > 64) | |
1749 | delay_level++, buffer_size -= buffer_size >> 2; | |
1750 | if (delay_level < 4) delay_level = 4; | |
1751 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1752 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1753 | ||
1754 | /* Auto save if enough time goes by without input. */ | |
1755 | if (commandflag != 0 | |
51172b6d | 1756 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1757 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1758 | && XINT (Vauto_save_timeout) > 0) |
1759 | { | |
1760 | Lisp_Object tem0; | |
1761 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1762 | tem0 = sit_for (delay, 0, 1, 1); | |
1763 | if (EQ (tem0, Qt)) | |
1764 | { | |
1765 | jmp_buf temp; | |
1766 | save_getcjmp (temp); | |
1767 | Fdo_auto_save (Qnil, Qnil); | |
1768 | restore_getcjmp (temp); | |
1769 | ||
1770 | /* If we have auto-saved and there is still no input | |
1771 | available, garbage collect if there has been enough | |
1772 | consing going on to make it worthwhile. */ | |
1773 | if (!detect_input_pending () | |
1774 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 RS |
1775 | Fgarbage_collect (); |
1776 | /* prepare_menu_bars isn't safe here, but it should | |
1777 | also be unnecessary. */ | |
1778 | redisplay (); | |
7d6de002 RS |
1779 | } |
1780 | } | |
1781 | } | |
284f4730 | 1782 | |
beecf6a1 | 1783 | if (NILP (c)) |
1e12dd87 | 1784 | { |
beecf6a1 | 1785 | PERDISPLAY *perd; |
bded54dd KH |
1786 | /* Check for something on one of the side queues. Give priority to |
1787 | the current display, but if we're not locked, then check the other | |
1788 | displays as well. */ | |
1789 | if (current_perdisplay && CONSP (current_perdisplay->kbd_queue)) | |
1790 | perd = current_perdisplay; | |
1791 | else if (!display_locked) | |
beecf6a1 KH |
1792 | { |
1793 | for (perd = all_perdisplays; perd; perd = perd->next_perdisplay) | |
1794 | if (CONSP (perd->kbd_queue)) | |
1795 | break; | |
cd72760c | 1796 | } |
bded54dd KH |
1797 | else |
1798 | perd = 0; | |
284f4730 | 1799 | |
beecf6a1 KH |
1800 | /* If we found something on a side queue, use that. |
1801 | Otherwise, read from the main queue, and if that gives us | |
1802 | something we can't use yet, put it on the side queue and | |
1803 | try again. */ | |
1804 | if (perd) | |
1805 | { | |
1806 | c = XCONS (perd->kbd_queue)->car; | |
1807 | perd->kbd_queue = XCONS (perd->kbd_queue)->cdr; | |
4c52b668 KH |
1808 | input_pending = readable_events (); |
1809 | #ifdef MULTI_FRAME | |
1810 | if (EVENT_HAS_PARAMETERS (c) | |
1811 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qswitch_frame)) | |
1812 | internal_last_event_frame = XCONS (XCONS (c)->cdr)->car; | |
1813 | Vlast_event_frame = internal_last_event_frame; | |
1814 | #endif | |
beecf6a1 KH |
1815 | } |
1816 | else | |
1817 | { | |
1818 | wrong_display: | |
1819 | /* Actually read a character, waiting if necessary. */ | |
1820 | while (c = kbd_buffer_get_event (&perd), NILP (c)) | |
1821 | { | |
1822 | if (commandflag >= 0 | |
1823 | && !input_pending && !detect_input_pending ()) | |
1824 | { | |
1825 | prepare_menu_bars (); | |
1826 | redisplay (); | |
1827 | } | |
1828 | } | |
bded54dd | 1829 | if (display_locked && perd != current_perdisplay) |
beecf6a1 KH |
1830 | { |
1831 | Lisp_Object *tailp = &perd->kbd_queue; | |
1832 | while (CONSP (*tailp)) | |
1833 | tailp = &XCONS (*tailp)->cdr; | |
1834 | if (!NILP (*tailp)) | |
1835 | abort (); | |
1836 | *tailp = Fcons (c, Qnil); | |
1837 | goto wrong_display; | |
1838 | } | |
1839 | } | |
bded54dd KH |
1840 | #ifdef MULTI_PERDISPLAY |
1841 | if (!current_perdisplay) | |
1842 | current_perdisplay = perd; | |
1843 | if (perd != current_perdisplay) | |
beecf6a1 KH |
1844 | { |
1845 | /* We shouldn't get here if we were locked onto one display! */ | |
bded54dd | 1846 | if (display_locked) |
beecf6a1 KH |
1847 | abort (); |
1848 | perd->kbd_queue = Fcons (c, perd->kbd_queue); | |
bded54dd | 1849 | current_perdisplay = perd; |
beecf6a1 KH |
1850 | longjmp (wrong_display_jmpbuf, 1); |
1851 | } | |
bded54dd | 1852 | #endif |
beecf6a1 | 1853 | } |
284f4730 | 1854 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1855 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1856 | Fkill_emacs (make_number (1)); |
1857 | ||
8c18cbfb | 1858 | if (INTEGERP (c)) |
80645119 JB |
1859 | { |
1860 | /* Add in any extra modifiers, where appropriate. */ | |
1861 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1862 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1863 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1864 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1865 | |
1866 | /* Transfer any other modifier bits directly from | |
1867 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1868 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1869 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1870 | } |
9fa4395d | 1871 | |
284f4730 JB |
1872 | non_reread: |
1873 | ||
f76475ad | 1874 | restore_getcjmp (save_jump); |
284f4730 JB |
1875 | |
1876 | start_polling (); | |
1877 | ||
dfd11da7 RS |
1878 | /* Buffer switch events are only for internal wakeups |
1879 | so don't show them to the user. */ | |
8c18cbfb | 1880 | if (BUFFERP (c)) |
dfd11da7 RS |
1881 | return c; |
1882 | ||
a1341f75 RS |
1883 | if (key_already_recorded) |
1884 | return c; | |
1885 | ||
dfd11da7 RS |
1886 | /* Wipe the echo area. */ |
1887 | echo_area_glyphs = 0; | |
284f4730 JB |
1888 | |
1889 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1890 | if (INTEGERP (c)) |
284f4730 JB |
1891 | { |
1892 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1893 | if (XINT (c) == -1) |
284f4730 JB |
1894 | return c; |
1895 | ||
8c18cbfb | 1896 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
1897 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1898 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1899 | } |
1900 | ||
e4fe371d RS |
1901 | /* If this event is a mouse click in the menu bar, |
1902 | return just menu-bar for now. Modify the mouse click event | |
1903 | so we won't do this twice, then queue it up. */ | |
1904 | if (EVENT_HAS_PARAMETERS (c) | |
1905 | && CONSP (XCONS (c)->cdr) | |
1906 | && CONSP (EVENT_START (c)) | |
1907 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 1908 | { |
e4fe371d | 1909 | Lisp_Object posn; |
284f4730 | 1910 | |
e4fe371d RS |
1911 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
1912 | /* Handle menu-bar events: | |
1913 | insert the dummy prefix event `menu-bar'. */ | |
1914 | if (EQ (posn, Qmenu_bar)) | |
1915 | { | |
1916 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
1917 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 1918 | |
e4fe371d RS |
1919 | also_record = c; |
1920 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
1921 | c = posn; | |
284f4730 | 1922 | } |
284f4730 JB |
1923 | } |
1924 | ||
e4fe371d RS |
1925 | record_char (c); |
1926 | if (! NILP (also_record)) | |
1927 | record_char (also_record); | |
51172b6d | 1928 | |
284f4730 JB |
1929 | from_macro: |
1930 | reread_first: | |
284f4730 | 1931 | |
b8556aee | 1932 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
1933 | if (echo_keystrokes |
1934 | && ! (EVENT_HAS_PARAMETERS (c) | |
1935 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
1936 | { |
1937 | echo_char (c); | |
1938 | if (! NILP (also_record)) | |
1939 | echo_char (also_record); | |
1940 | } | |
b8556aee | 1941 | |
db8c1663 | 1942 | /* Record this character as part of the current key. */ |
b8556aee | 1943 | add_command_key (c); |
e4fe371d RS |
1944 | if (! NILP (also_record)) |
1945 | add_command_key (also_record); | |
284f4730 JB |
1946 | |
1947 | /* Re-reading in the middle of a command */ | |
1948 | reread: | |
1949 | last_input_char = c; | |
1950 | num_input_chars++; | |
1951 | ||
1952 | /* Process the help character specially if enabled */ | |
7e85b935 | 1953 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1954 | { |
1955 | Lisp_Object tem0; | |
1956 | count = specpdl_ptr - specpdl; | |
1957 | ||
1958 | record_unwind_protect (Fset_window_configuration, | |
1959 | Fcurrent_window_configuration (Qnil)); | |
1960 | ||
1961 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 1962 | if (STRINGP (tem0)) |
284f4730 JB |
1963 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
1964 | ||
1965 | cancel_echoing (); | |
3cb81011 KH |
1966 | do |
1967 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1968 | while (BUFFERP (c)); |
ff11dfa1 | 1969 | /* Remove the help from the frame */ |
284f4730 | 1970 | unbind_to (count, Qnil); |
e9bf89a0 | 1971 | prepare_menu_bars (); |
284f4730 JB |
1972 | redisplay (); |
1973 | if (EQ (c, make_number (040))) | |
1974 | { | |
1975 | cancel_echoing (); | |
3cb81011 KH |
1976 | do |
1977 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1978 | while (BUFFERP (c)); |
284f4730 JB |
1979 | } |
1980 | } | |
1981 | ||
1982 | return c; | |
1983 | } | |
1984 | ||
e4fe371d RS |
1985 | /* Record the input event C in various ways. */ |
1986 | ||
1987 | static void | |
1988 | record_char (c) | |
1989 | Lisp_Object c; | |
1990 | { | |
1991 | total_keys++; | |
1992 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
1993 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
1994 | recent_keys_index = 0; | |
1995 | ||
1996 | /* Write c to the dribble file. If c is a lispy event, write | |
1997 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1998 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1999 | if (dribble) | |
2000 | { | |
2001 | if (INTEGERP (c)) | |
2002 | { | |
2003 | if (XUINT (c) < 0x100) | |
2004 | putc (XINT (c), dribble); | |
2005 | else | |
2006 | fprintf (dribble, " 0x%x", XUINT (c)); | |
2007 | } | |
2008 | else | |
2009 | { | |
2010 | Lisp_Object dribblee; | |
2011 | ||
2012 | /* If it's a structured event, take the event header. */ | |
2013 | dribblee = EVENT_HEAD (c); | |
2014 | ||
2015 | if (SYMBOLP (dribblee)) | |
2016 | { | |
2017 | putc ('<', dribble); | |
2018 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
2019 | XSYMBOL (dribblee)->name->size, | |
2020 | dribble); | |
2021 | putc ('>', dribble); | |
2022 | } | |
2023 | } | |
2024 | ||
2025 | fflush (dribble); | |
2026 | } | |
2027 | ||
2028 | store_kbd_macro_char (c); | |
2029 | ||
2030 | num_nonmacro_input_chars++; | |
2031 | } | |
2032 | ||
284f4730 JB |
2033 | Lisp_Object |
2034 | print_help (object) | |
2035 | Lisp_Object object; | |
2036 | { | |
622de3e9 | 2037 | struct buffer *old = current_buffer; |
284f4730 | 2038 | Fprinc (object, Qnil); |
622de3e9 KH |
2039 | set_buffer_internal (XBUFFER (Vstandard_output)); |
2040 | call0 (intern ("help-mode")); | |
2041 | set_buffer_internal (old); | |
284f4730 JB |
2042 | return Qnil; |
2043 | } | |
2044 | ||
2045 | /* Copy out or in the info on where C-g should throw to. | |
2046 | This is used when running Lisp code from within get_char, | |
2047 | in case get_char is called recursively. | |
2048 | See read_process_output. */ | |
2049 | ||
2050 | save_getcjmp (temp) | |
2051 | jmp_buf temp; | |
2052 | { | |
2053 | bcopy (getcjmp, temp, sizeof getcjmp); | |
2054 | } | |
2055 | ||
2056 | restore_getcjmp (temp) | |
2057 | jmp_buf temp; | |
2058 | { | |
2059 | bcopy (temp, getcjmp, sizeof getcjmp); | |
2060 | } | |
2061 | ||
2062 | \f | |
2eb6bfbe RM |
2063 | #ifdef HAVE_MOUSE |
2064 | ||
284f4730 JB |
2065 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2066 | of this function. */ | |
a9d77f1f | 2067 | |
284f4730 JB |
2068 | static Lisp_Object |
2069 | tracking_off (old_value) | |
2070 | Lisp_Object old_value; | |
2071 | { | |
71edead1 RS |
2072 | do_mouse_tracking = old_value; |
2073 | if (NILP (old_value)) | |
284f4730 | 2074 | { |
284f4730 JB |
2075 | /* Redisplay may have been preempted because there was input |
2076 | available, and it assumes it will be called again after the | |
2077 | input has been processed. If the only input available was | |
2078 | the sort that we have just disabled, then we need to call | |
2079 | redisplay. */ | |
2080 | if (!readable_events ()) | |
2081 | { | |
e9bf89a0 | 2082 | prepare_menu_bars (); |
284f4730 JB |
2083 | redisplay_preserve_echo_area (); |
2084 | get_input_pending (&input_pending); | |
2085 | } | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2090 | "Evaluate BODY with mouse movement events enabled.\n\ |
2091 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2092 | you can read with `read-event'.\n\ | |
2093 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2094 | (args) |
2095 | Lisp_Object args; | |
2096 | { | |
2097 | int count = specpdl_ptr - specpdl; | |
2098 | Lisp_Object val; | |
2099 | ||
a9d77f1f | 2100 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2101 | |
3f9929bf RS |
2102 | if (!input_pending && !detect_input_pending ()) |
2103 | prepare_menu_bars (); | |
2104 | ||
a9d77f1f | 2105 | XSETFRAME (do_mouse_tracking, selected_frame); |
284f4730 JB |
2106 | |
2107 | val = Fprogn (args); | |
2108 | return unbind_to (count, val); | |
2109 | } | |
2eb6bfbe RM |
2110 | |
2111 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
2112 | \f |
2113 | /* Low level keyboard/mouse input. | |
2114 | kbd_buffer_store_event places events in kbd_buffer, and | |
2115 | kbd_buffer_get_event retrieves them. | |
2116 | mouse_moved indicates when the mouse has moved again, and | |
2117 | *mouse_position_hook provides the mouse position. */ | |
2118 | ||
2119 | /* Return true iff there are any events in the queue that read-char | |
2120 | would return. If this returns false, a read-char would block. */ | |
2121 | static int | |
2122 | readable_events () | |
2123 | { | |
beecf6a1 KH |
2124 | if (kbd_fetch_ptr != kbd_store_ptr) |
2125 | return 1; | |
2126 | #ifdef HAVE_MOUSE | |
2127 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2128 | return 1; | |
2129 | #endif | |
4c52b668 KH |
2130 | if (display_locked) |
2131 | { | |
2132 | if (CONSP (current_perdisplay->kbd_queue)) | |
2133 | return 1; | |
2134 | } | |
2135 | else | |
2136 | { | |
2137 | PERDISPLAY *perd; | |
2138 | for (perd = all_perdisplays; perd; perd = perd->next_perdisplay) | |
2139 | if (CONSP (perd->kbd_queue)) | |
2140 | return 1; | |
2141 | } | |
beecf6a1 | 2142 | return 0; |
a612e298 RS |
2143 | } |
2144 | ||
2145 | /* Set this for debugging, to have a way to get out */ | |
2146 | int stop_character; | |
284f4730 JB |
2147 | |
2148 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
2149 | ||
2150 | void | |
2151 | kbd_buffer_store_event (event) | |
2152 | register struct input_event *event; | |
2153 | { | |
2154 | if (event->kind == no_event) | |
2155 | abort (); | |
2156 | ||
2157 | if (event->kind == ascii_keystroke) | |
2158 | { | |
e9bf89a0 | 2159 | register int c = event->code & 0377; |
284f4730 | 2160 | |
faf5e407 JB |
2161 | if (event->modifiers & ctrl_modifier) |
2162 | c = make_ctrl_char (c); | |
2163 | ||
9fd7d808 RS |
2164 | c |= (event->modifiers |
2165 | & (meta_modifier | alt_modifier | |
2166 | | hyper_modifier | super_modifier)); | |
2167 | ||
86e5706b | 2168 | if (c == quit_char) |
284f4730 | 2169 | { |
3e51c7b7 JB |
2170 | extern SIGTYPE interrupt_signal (); |
2171 | ||
07d2b8de | 2172 | #ifdef MULTI_FRAME |
284f4730 | 2173 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2174 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2175 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2176 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2177 | { |
9b8eb840 | 2178 | Lisp_Object focus; |
4bb994d1 | 2179 | |
9b8eb840 | 2180 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2181 | if (NILP (focus)) |
beecf6a1 | 2182 | focus = event->frame_or_window; |
4c52b668 KH |
2183 | internal_last_event_frame = focus; |
2184 | Vlast_event_frame = focus; | |
4bb994d1 | 2185 | } |
07d2b8de | 2186 | #endif |
3e51c7b7 | 2187 | |
ffd56f97 | 2188 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2189 | interrupt_signal (); |
2190 | return; | |
2191 | } | |
2192 | ||
2193 | if (c && c == stop_character) | |
2194 | { | |
2195 | sys_suspend (); | |
2196 | return; | |
2197 | } | |
284f4730 JB |
2198 | } |
2199 | ||
beecf6a1 KH |
2200 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2201 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2202 | |
2203 | /* Don't let the very last slot in the buffer become full, | |
2204 | since that would make the two pointers equal, | |
2205 | and that is indistinguishable from an empty buffer. | |
2206 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2207 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2208 | { |
beecf6a1 | 2209 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2210 | sp->kind = event->kind; |
27203ead RS |
2211 | if (event->kind == selection_request_event) |
2212 | { | |
2213 | /* We must not use the ordinary copying code for this case, | |
2214 | since `part' is an enum and copying it might not copy enough | |
2215 | in this case. */ | |
612b78ef | 2216 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2217 | } |
2218 | else | |
2219 | { | |
612b78ef KH |
2220 | sp->code = event->code; |
2221 | sp->part = event->part; | |
2222 | sp->frame_or_window = event->frame_or_window; | |
2223 | sp->modifiers = event->modifiers; | |
2224 | sp->x = event->x; | |
2225 | sp->y = event->y; | |
2226 | sp->timestamp = event->timestamp; | |
27203ead | 2227 | } |
beecf6a1 KH |
2228 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2229 | - kbd_buffer] | |
7b4aedb9 | 2230 | = event->frame_or_window); |
284f4730 | 2231 | |
beecf6a1 | 2232 | kbd_store_ptr++; |
284f4730 JB |
2233 | } |
2234 | } | |
a612e298 RS |
2235 | \f |
2236 | /* Read one event from the event buffer, waiting if necessary. | |
2237 | The value is a Lisp object representing the event. | |
2238 | The value is nil for an event that should be ignored, | |
2239 | or that was handled here. | |
2240 | We always read and discard one event. */ | |
284f4730 JB |
2241 | |
2242 | static Lisp_Object | |
beecf6a1 | 2243 | kbd_buffer_get_event (PERDISPLAY **perdp) |
284f4730 JB |
2244 | { |
2245 | register int c; | |
2246 | Lisp_Object obj; | |
2247 | ||
2248 | if (noninteractive) | |
2249 | { | |
2250 | c = getchar (); | |
18cd2eeb | 2251 | XSETINT (obj, c); |
beecf6a1 | 2252 | *perdp = all_perdisplays; /* There'd better be exactly one! */ |
284f4730 JB |
2253 | return obj; |
2254 | } | |
2255 | ||
2256 | /* Wait until there is input available. */ | |
2257 | for (;;) | |
2258 | { | |
beecf6a1 KH |
2259 | if (kbd_fetch_ptr != kbd_store_ptr) |
2260 | break; | |
2261 | #ifdef HAVE_MOUSE | |
2262 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
284f4730 | 2263 | break; |
beecf6a1 | 2264 | #endif |
284f4730 JB |
2265 | |
2266 | /* If the quit flag is set, then read_char will return | |
2267 | quit_char, so that counts as "available input." */ | |
2268 | if (!NILP (Vquit_flag)) | |
2269 | quit_throw_to_read_char (); | |
2270 | ||
2271 | /* One way or another, wait until input is available; then, if | |
2272 | interrupt handlers have not read it, read it now. */ | |
2273 | ||
2274 | #ifdef OLDVMS | |
2275 | wait_for_kbd_input (); | |
2276 | #else | |
2277 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2278 | #ifdef SIGIO | |
2279 | gobble_input (0); | |
2280 | #endif /* SIGIO */ | |
beecf6a1 KH |
2281 | if (kbd_fetch_ptr != kbd_store_ptr) |
2282 | break; | |
2283 | #ifdef HAVE_MOUSE | |
2284 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2285 | break; | |
2286 | #endif | |
2287 | { | |
2288 | Lisp_Object minus_one; | |
f76475ad | 2289 | |
beecf6a1 KH |
2290 | XSETINT (minus_one, -1); |
2291 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 | 2292 | |
beecf6a1 KH |
2293 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2294 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2295 | read_avail_input (1); | |
2296 | } | |
284f4730 JB |
2297 | #endif /* not VMS */ |
2298 | } | |
2299 | ||
2300 | /* At this point, we know that there is a readable event available | |
2301 | somewhere. If the event queue is empty, then there must be a | |
2302 | mouse movement enabled and available. */ | |
beecf6a1 | 2303 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2304 | { |
cd21b839 | 2305 | struct input_event *event; |
3e51c7b7 | 2306 | |
beecf6a1 KH |
2307 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2308 | ? kbd_fetch_ptr | |
2309 | : kbd_buffer); | |
3e51c7b7 | 2310 | |
cd21b839 | 2311 | last_event_timestamp = event->timestamp; |
cd21b839 | 2312 | |
beecf6a1 KH |
2313 | { |
2314 | Lisp_Object frame; | |
2315 | frame = event->frame_or_window; | |
2316 | if (CONSP (frame)) | |
2317 | frame = XCONS (frame)->car; | |
2318 | else if (WINDOWP (frame)) | |
2319 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
4c52b668 KH |
2320 | /* There are still some events that don't set this field. |
2321 | For now, just ignore the problem. */ | |
beecf6a1 | 2322 | if (!FRAMEP (frame)) |
4c52b668 KH |
2323 | *perdp = all_perdisplays; |
2324 | else | |
2325 | *perdp = get_perdisplay (XFRAME (frame)); | |
beecf6a1 KH |
2326 | } |
2327 | ||
4bb994d1 JB |
2328 | obj = Qnil; |
2329 | ||
48e416d4 | 2330 | /* These two kinds of events get special handling |
a612e298 RS |
2331 | and don't actually appear to the command loop. |
2332 | We return nil for them. */ | |
48e416d4 RS |
2333 | if (event->kind == selection_request_event) |
2334 | { | |
598a9fa7 | 2335 | #ifdef HAVE_X11 |
4581e928 RS |
2336 | struct input_event copy = *event; |
2337 | /* Remove it from the buffer before processing it, | |
2338 | since otherwise swallow_events will see it | |
2339 | and process it again. */ | |
beecf6a1 | 2340 | kbd_fetch_ptr = event + 1; |
4581e928 | 2341 | x_handle_selection_request (©); |
598a9fa7 JB |
2342 | #else |
2343 | /* We're getting selection request events, but we don't have | |
2344 | a window system. */ | |
2345 | abort (); | |
2346 | #endif | |
48e416d4 RS |
2347 | } |
2348 | ||
1e12dd87 | 2349 | else if (event->kind == selection_clear_event) |
48e416d4 | 2350 | { |
598a9fa7 | 2351 | #ifdef HAVE_X11 |
48e416d4 | 2352 | x_handle_selection_clear (event); |
beecf6a1 | 2353 | kbd_fetch_ptr = event + 1; |
598a9fa7 JB |
2354 | #else |
2355 | /* We're getting selection request events, but we don't have | |
2356 | a window system. */ | |
2357 | abort (); | |
2358 | #endif | |
48e416d4 | 2359 | } |
990acea3 RS |
2360 | #ifdef HAVE_X11 |
2361 | else if (event->kind == delete_window_event) | |
2362 | { | |
bbdc2092 RS |
2363 | /* Make an event (delete-frame (FRAME)). */ |
2364 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2365 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2366 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2367 | } |
2368 | else if (event->kind == iconify_event) | |
2369 | { | |
2370 | /* Make an event (iconify-frame (FRAME)). */ | |
2371 | obj = Fcons (event->frame_or_window, Qnil); | |
2372 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2373 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2374 | } |
2375 | else if (event->kind == deiconify_event) | |
2376 | { | |
2377 | /* Make an event (make-frame-visible (FRAME)). */ | |
2378 | obj = Fcons (event->frame_or_window, Qnil); | |
2379 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2380 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2381 | } |
2382 | #endif | |
f5e09c8b RS |
2383 | else if (event->kind == menu_bar_event) |
2384 | { | |
beecf6a1 KH |
2385 | /* The event value is in the cdr of the frame_or_window slot. */ |
2386 | if (!CONSP (event->frame_or_window)) | |
2387 | abort (); | |
2388 | obj = XCONS (event->frame_or_window)->cdr; | |
2389 | kbd_fetch_ptr = event + 1; | |
f5e09c8b | 2390 | } |
a8015ab5 KH |
2391 | else if (event->kind == buffer_switch_event) |
2392 | { | |
2393 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2394 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2395 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2396 | } |
a612e298 RS |
2397 | /* Just discard these, by returning nil. |
2398 | (They shouldn't be found in the buffer, | |
2399 | but on some machines it appears they do show up.) */ | |
2400 | else if (event->kind == no_event) | |
beecf6a1 | 2401 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2402 | |
4bb994d1 JB |
2403 | /* If this event is on a different frame, return a switch-frame this |
2404 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2405 | else |
2406 | { | |
a6d53864 | 2407 | #ifdef MULTI_FRAME |
9b8eb840 | 2408 | Lisp_Object frame; |
1e12dd87 | 2409 | Lisp_Object focus; |
7b4aedb9 | 2410 | |
9b8eb840 | 2411 | frame = event->frame_or_window; |
8c18cbfb | 2412 | if (WINDOWP (frame)) |
1e12dd87 | 2413 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2414 | |
1e12dd87 RS |
2415 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2416 | if (! NILP (focus)) | |
2417 | frame = focus; | |
07d2b8de | 2418 | |
4c52b668 | 2419 | if (! EQ (frame, internal_last_event_frame) |
1e12dd87 RS |
2420 | && XFRAME (frame) != selected_frame) |
2421 | obj = make_lispy_switch_frame (frame); | |
4c52b668 | 2422 | internal_last_event_frame = frame; |
a6d53864 | 2423 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2424 | |
1e12dd87 RS |
2425 | /* If we didn't decide to make a switch-frame event, go ahead |
2426 | and build a real event from the queue entry. */ | |
cd21b839 | 2427 | |
1e12dd87 RS |
2428 | if (NILP (obj)) |
2429 | { | |
2430 | obj = make_lispy_event (event); | |
2431 | ||
2432 | /* Wipe out this event, to catch bugs. */ | |
2433 | event->kind = no_event; | |
beecf6a1 | 2434 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2435 | |
beecf6a1 | 2436 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2437 | } |
4bb994d1 | 2438 | } |
284f4730 | 2439 | } |
2eb6bfbe | 2440 | #ifdef HAVE_MOUSE |
a612e298 | 2441 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2442 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2443 | { |
a9d77f1f | 2444 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2445 | Lisp_Object bar_window; |
3c370943 | 2446 | enum scroll_bar_part part; |
e5d77022 JB |
2447 | Lisp_Object x, y; |
2448 | unsigned long time; | |
284f4730 | 2449 | |
beecf6a1 KH |
2450 | if (!current_perdisplay) |
2451 | abort (); | |
2452 | ||
2453 | *perdp = current_perdisplay; | |
e177ac3a RS |
2454 | /* Note that this uses F to determine which display to look at. |
2455 | If there is no valid info, it does not store anything | |
2456 | so x remains nil. */ | |
2457 | x = Qnil; | |
7b4aedb9 | 2458 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2459 | |
2460 | obj = Qnil; | |
284f4730 | 2461 | |
07d2b8de | 2462 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2463 | /* Decide if we should generate a switch-frame event. Don't |
2464 | generate switch-frame events for motion outside of all Emacs | |
2465 | frames. */ | |
e177ac3a | 2466 | if (!NILP (x) && f) |
cd21b839 | 2467 | { |
9b8eb840 | 2468 | Lisp_Object frame; |
4bb994d1 | 2469 | |
9b8eb840 | 2470 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2471 | if (NILP (frame)) |
18cd2eeb | 2472 | XSETFRAME (frame, f); |
4bb994d1 | 2473 | |
4c52b668 | 2474 | if (! EQ (frame, internal_last_event_frame) |
80645119 | 2475 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2476 | obj = make_lispy_switch_frame (frame); |
4c52b668 | 2477 | internal_last_event_frame = frame; |
cd21b839 | 2478 | } |
68553292 | 2479 | #endif |
4bb994d1 JB |
2480 | |
2481 | /* If we didn't decide to make a switch-frame event, go ahead and | |
2482 | return a mouse-motion event. */ | |
e177ac3a | 2483 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2484 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2485 | } |
2eb6bfbe | 2486 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2487 | else |
2488 | /* We were promised by the above while loop that there was | |
2489 | something for us to read! */ | |
2490 | abort (); | |
2491 | ||
2492 | input_pending = readable_events (); | |
2493 | ||
3c370943 | 2494 | #ifdef MULTI_FRAME |
4c52b668 | 2495 | Vlast_event_frame = internal_last_event_frame; |
3c370943 JB |
2496 | #endif |
2497 | ||
284f4730 JB |
2498 | return (obj); |
2499 | } | |
a612e298 RS |
2500 | \f |
2501 | /* Process any events that are not user-visible, | |
2502 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2503 | |
2504 | void | |
2505 | swallow_events () | |
2506 | { | |
beecf6a1 | 2507 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2508 | { |
2509 | struct input_event *event; | |
2510 | ||
beecf6a1 KH |
2511 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2512 | ? kbd_fetch_ptr | |
2513 | : kbd_buffer); | |
3a3b9632 RS |
2514 | |
2515 | last_event_timestamp = event->timestamp; | |
2516 | ||
2517 | /* These two kinds of events get special handling | |
2518 | and don't actually appear to the command loop. */ | |
2519 | if (event->kind == selection_request_event) | |
2520 | { | |
2521 | #ifdef HAVE_X11 | |
4581e928 RS |
2522 | struct input_event copy; |
2523 | copy = *event; | |
beecf6a1 | 2524 | kbd_fetch_ptr = event + 1; |
4581e928 | 2525 | x_handle_selection_request (©); |
3a3b9632 RS |
2526 | #else |
2527 | /* We're getting selection request events, but we don't have | |
2528 | a window system. */ | |
2529 | abort (); | |
2530 | #endif | |
2531 | } | |
2532 | ||
2533 | else if (event->kind == selection_clear_event) | |
2534 | { | |
2535 | #ifdef HAVE_X11 | |
2536 | x_handle_selection_clear (event); | |
beecf6a1 | 2537 | kbd_fetch_ptr = event + 1; |
3a3b9632 RS |
2538 | #else |
2539 | /* We're getting selection request events, but we don't have | |
2540 | a window system. */ | |
2541 | abort (); | |
2542 | #endif | |
2543 | } | |
2544 | else | |
2545 | break; | |
2546 | } | |
2547 | ||
2548 | get_input_pending (&input_pending); | |
2549 | } | |
a612e298 | 2550 | \f |
284f4730 | 2551 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2552 | static Lisp_Object accent_key_syms; |
270a208f | 2553 | static Lisp_Object system_key_syms; |
284f4730 JB |
2554 | static Lisp_Object func_key_syms; |
2555 | static Lisp_Object mouse_syms; | |
2556 | ||
270a208f | 2557 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2558 | |
e9bf89a0 RS |
2559 | /* This is a list of keysym codes for special "accent" characters. |
2560 | It parallels lispy_accent_keys. */ | |
2561 | ||
2562 | static int lispy_accent_codes[] = | |
2563 | { | |
79a7046c | 2564 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2565 | XK_dead_circumflex, |
79a7046c RS |
2566 | #else |
2567 | 0, | |
2568 | #endif | |
2569 | #ifdef XK_dead_grave | |
e9bf89a0 | 2570 | XK_dead_grave, |
79a7046c RS |
2571 | #else |
2572 | 0, | |
2573 | #endif | |
2574 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2575 | XK_dead_tilde, |
79a7046c RS |
2576 | #else |
2577 | 0, | |
2578 | #endif | |
2579 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2580 | XK_dead_diaeresis, |
79a7046c RS |
2581 | #else |
2582 | 0, | |
2583 | #endif | |
2584 | #ifdef XK_dead_macron | |
e9bf89a0 | 2585 | XK_dead_macron, |
79a7046c RS |
2586 | #else |
2587 | 0, | |
2588 | #endif | |
2589 | #ifdef XK_dead_degree | |
e9bf89a0 | 2590 | XK_dead_degree, |
79a7046c RS |
2591 | #else |
2592 | 0, | |
2593 | #endif | |
2594 | #ifdef XK_dead_acute | |
e9bf89a0 | 2595 | XK_dead_acute, |
79a7046c RS |
2596 | #else |
2597 | 0, | |
2598 | #endif | |
2599 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2600 | XK_dead_cedilla, |
79a7046c RS |
2601 | #else |
2602 | 0, | |
2603 | #endif | |
2604 | #ifdef XK_dead_breve | |
e9bf89a0 | 2605 | XK_dead_breve, |
79a7046c RS |
2606 | #else |
2607 | 0, | |
2608 | #endif | |
2609 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2610 | XK_dead_ogonek, |
79a7046c RS |
2611 | #else |
2612 | 0, | |
2613 | #endif | |
2614 | #ifdef XK_dead_caron | |
e9bf89a0 | 2615 | XK_dead_caron, |
79a7046c RS |
2616 | #else |
2617 | 0, | |
2618 | #endif | |
2619 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2620 | XK_dead_doubleacute, |
79a7046c RS |
2621 | #else |
2622 | 0, | |
2623 | #endif | |
2624 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2625 | XK_dead_abovedot, |
79a7046c RS |
2626 | #else |
2627 | 0, | |
2628 | #endif | |
e9bf89a0 RS |
2629 | }; |
2630 | ||
2631 | /* This is a list of Lisp names for special "accent" characters. | |
2632 | It parallels lispy_accent_codes. */ | |
2633 | ||
2634 | static char *lispy_accent_keys[] = | |
2635 | { | |
2636 | "dead-circumflex", | |
2637 | "dead-grave", | |
2638 | "dead-tilde", | |
2639 | "dead-diaeresis", | |
2640 | "dead-macron", | |
2641 | "dead-degree", | |
2642 | "dead-acute", | |
2643 | "dead-cedilla", | |
2644 | "dead-breve", | |
2645 | "dead-ogonek", | |
2646 | "dead-caron", | |
2647 | "dead-doubleacute", | |
2648 | "dead-abovedot", | |
2649 | }; | |
2650 | ||
284f4730 JB |
2651 | /* You'll notice that this table is arranged to be conveniently |
2652 | indexed by X Windows keysym values. */ | |
2653 | static char *lispy_function_keys[] = | |
2654 | { | |
2655 | /* X Keysym value */ | |
2656 | ||
80e4aa30 | 2657 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2658 | "backspace", |
2659 | "tab", | |
2660 | "linefeed", | |
2661 | "clear", | |
2662 | 0, | |
2663 | "return", | |
2664 | 0, 0, | |
2665 | 0, 0, 0, /* 0xff10 */ | |
2666 | "pause", | |
2667 | 0, 0, 0, 0, 0, 0, 0, | |
2668 | "escape", | |
2669 | 0, 0, 0, 0, | |
2670 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2671 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2672 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2673 | ||
284f4730 JB |
2674 | "home", /* 0xff50 */ /* IsCursorKey */ |
2675 | "left", | |
2676 | "up", | |
2677 | "right", | |
2678 | "down", | |
2679 | "prior", | |
2680 | "next", | |
2681 | "end", | |
2682 | "begin", | |
2683 | 0, /* 0xff59 */ | |
2684 | 0, 0, 0, 0, 0, 0, | |
2685 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2686 | "print", | |
2687 | "execute", | |
2688 | "insert", | |
2689 | 0, /* 0xff64 */ | |
2690 | "undo", | |
2691 | "redo", | |
2692 | "menu", | |
2693 | "find", | |
2694 | "cancel", | |
2695 | "help", | |
2696 | "break", /* 0xff6b */ | |
2697 | ||
9fdbfdf8 | 2698 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2699 | 0, /* 0xff76 */ |
36ae397e | 2700 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2701 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2702 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2703 | "kp-tab", /* 0xff89 */ | |
2704 | 0, 0, 0, | |
2705 | "kp-enter", /* 0xff8d */ | |
2706 | 0, 0, 0, | |
2707 | "kp-f1", /* 0xff91 */ | |
2708 | "kp-f2", | |
2709 | "kp-f3", | |
2710 | "kp-f4", | |
872157e7 RS |
2711 | "kp-home", /* 0xff95 */ |
2712 | "kp-left", | |
2713 | "kp-up", | |
2714 | "kp-right", | |
2715 | "kp-down", | |
2716 | "kp-prior", /* kp-page-up */ | |
2717 | "kp-next", /* kp-page-down */ | |
2718 | "kp-end", | |
2719 | "kp-begin", | |
2720 | "kp-insert", | |
2721 | "kp-delete", | |
2722 | 0, /* 0xffa0 */ | |
2723 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2724 | "kp-multiply", /* 0xffaa */ |
2725 | "kp-add", | |
2726 | "kp-separator", | |
2727 | "kp-subtract", | |
2728 | "kp-decimal", | |
2729 | "kp-divide", /* 0xffaf */ | |
2730 | "kp-0", /* 0xffb0 */ | |
2731 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2732 | 0, /* 0xffba */ | |
2733 | 0, 0, | |
2734 | "kp-equal", /* 0xffbd */ | |
2735 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2736 | "f2", |
2737 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2738 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2739 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2740 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2741 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2742 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2743 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2744 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2745 | }; |
2746 | ||
2747 | static char *lispy_mouse_names[] = | |
2748 | { | |
2749 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2750 | }; | |
2751 | ||
3c370943 | 2752 | /* Scroll bar parts. */ |
4bb994d1 JB |
2753 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2754 | ||
3c370943 JB |
2755 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2756 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2757 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2758 | }; | |
2759 | ||
2760 | ||
7b4aedb9 | 2761 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2762 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2763 | |
2764 | The elements have the form | |
2765 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2766 | where REST is the cdr of a position as it would be reported in the event. | |
2767 | ||
2768 | The make_lispy_event function stores positions here to tell the | |
2769 | difference between click and drag events, and to store the starting | |
2770 | location to be included in drag events. */ | |
2771 | ||
2772 | static Lisp_Object button_down_location; | |
88cb0656 | 2773 | |
fbcd35bd JB |
2774 | /* Information about the most recent up-going button event: Which |
2775 | button, what location, and what time. */ | |
2776 | ||
559f9d04 RS |
2777 | static int last_mouse_button; |
2778 | static int last_mouse_x; | |
2779 | static int last_mouse_y; | |
2780 | static unsigned long button_down_time; | |
fbcd35bd | 2781 | |
564dc952 JB |
2782 | /* The maximum time between clicks to make a double-click, |
2783 | or Qnil to disable double-click detection, | |
2784 | or Qt for no time limit. */ | |
2785 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2786 | |
2787 | /* The number of clicks in this multiple-click. */ | |
2788 | ||
2789 | int double_click_count; | |
2790 | ||
bb936752 FP |
2791 | #ifdef USE_X_TOOLKIT |
2792 | extern Lisp_Object map_event_to_object (); | |
2793 | #endif /* USE_X_TOOLKIT */ | |
2794 | ||
284f4730 JB |
2795 | /* Given a struct input_event, build the lisp event which represents |
2796 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2797 | movement buffer, which should have a movement event in it. |
2798 | ||
2799 | Note that events must be passed to this function in the order they | |
2800 | are received; this function stores the location of button presses | |
2801 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2802 | |
2803 | static Lisp_Object | |
2804 | make_lispy_event (event) | |
2805 | struct input_event *event; | |
2806 | { | |
79a7046c RS |
2807 | int i; |
2808 | ||
0220c518 | 2809 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 2810 | { |
284f4730 JB |
2811 | /* A simple keystroke. */ |
2812 | case ascii_keystroke: | |
86e5706b | 2813 | { |
9343ab07 | 2814 | Lisp_Object lispy_c; |
e9bf89a0 | 2815 | int c = event->code & 0377; |
5a1c6df8 JB |
2816 | /* Turn ASCII characters into control characters |
2817 | when proper. */ | |
2818 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2819 | c = make_ctrl_char (c); |
2820 | ||
2821 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2822 | just above, and the shift key was taken care of by the X code, | |
2823 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2824 | c |= (event->modifiers |
2825 | & (meta_modifier | alt_modifier | |
2826 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2827 | button_down_time = 0; |
bb9e9bed | 2828 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2829 | return lispy_c; |
86e5706b | 2830 | } |
284f4730 JB |
2831 | |
2832 | /* A function key. The symbol may need to have modifier prefixes | |
2833 | tacked onto it. */ | |
2834 | case non_ascii_keystroke: | |
559f9d04 | 2835 | button_down_time = 0; |
e9bf89a0 RS |
2836 | |
2837 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2838 | if (event->code == lispy_accent_codes[i]) | |
2839 | return modify_event_symbol (i, | |
2840 | event->modifiers, | |
80e4aa30 | 2841 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2842 | lispy_accent_keys, &accent_key_syms, |
2843 | (sizeof (lispy_accent_keys) | |
2844 | / sizeof (lispy_accent_keys[0]))); | |
2845 | ||
270a208f | 2846 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2847 | if (event->code & (1 << 28)) |
2848 | { | |
2849 | /* We need to use an alist rather than a vector as the cache | |
2850 | since we can't make a vector long enuf. */ | |
270a208f RS |
2851 | if (NILP (system_key_syms)) |
2852 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2853 | return modify_event_symbol (event->code & 0xffffff, |
2854 | event->modifiers, | |
270a208f RS |
2855 | Qfunction_key, Vsystem_key_alist, |
2856 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2857 | } |
2858 | ||
e9bf89a0 RS |
2859 | return modify_event_symbol (event->code - 0xff00, |
2860 | event->modifiers, | |
80e4aa30 | 2861 | Qfunction_key, Qnil, |
284f4730 JB |
2862 | lispy_function_keys, &func_key_syms, |
2863 | (sizeof (lispy_function_keys) | |
2864 | / sizeof (lispy_function_keys[0]))); | |
2865 | break; | |
2866 | ||
87485d6f | 2867 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
88cb0656 JB |
2868 | /* A mouse click. Figure out where it is, decide whether it's |
2869 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2870 | case mouse_click: |
3c370943 | 2871 | case scroll_bar_click: |
284f4730 | 2872 | { |
e9bf89a0 | 2873 | int button = event->code; |
559f9d04 | 2874 | int is_double; |
7b4aedb9 | 2875 | Lisp_Object position; |
dbc4e1c1 JB |
2876 | Lisp_Object *start_pos_ptr; |
2877 | Lisp_Object start_pos; | |
284f4730 | 2878 | |
7b4aedb9 | 2879 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2880 | abort (); |
2881 | ||
7b4aedb9 JB |
2882 | /* Build the position as appropriate for this mouse click. */ |
2883 | if (event->kind == mouse_click) | |
284f4730 | 2884 | { |
7b4aedb9 | 2885 | int part; |
598a9fa7 | 2886 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2887 | Lisp_Object window; |
7b4aedb9 | 2888 | Lisp_Object posn; |
9e20143a RS |
2889 | int row, column; |
2890 | ||
5da3133a RS |
2891 | /* Ignore mouse events that were made on frame that |
2892 | have been deleted. */ | |
2893 | if (! FRAME_LIVE_P (f)) | |
2894 | return Qnil; | |
2895 | ||
9e20143a | 2896 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
eef045bf | 2897 | &column, &row, 0, 1); |
7b4aedb9 | 2898 | |
eef045bf RS |
2899 | #ifndef USE_X_TOOLKIT |
2900 | /* In the non-toolkit version, clicks on the menu bar | |
2901 | are ordinary button events in the event buffer. | |
2902 | Distinguish them, and invoke the menu. | |
2903 | ||
2904 | (In the toolkit version, the toolkit handles the menu bar | |
2905 | and Emacs doesn't know about it until after the user | |
2906 | makes a selection.) */ | |
2907 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f)) | |
bb936752 | 2908 | { |
b7c49376 | 2909 | Lisp_Object items, item; |
0a0e8fe6 RS |
2910 | int hpos; |
2911 | int i; | |
2912 | ||
2913 | /* Activate the menu bar on the down event. If the | |
2914 | up event comes in before the menu code can deal with it, | |
2915 | just ignore it. */ | |
2916 | if (! (event->modifiers & down_modifier)) | |
2917 | return Qnil; | |
0aafc975 | 2918 | |
f2ae6b3f | 2919 | item = Qnil; |
5ec75a55 | 2920 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2921 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2922 | { |
2923 | Lisp_Object pos, string; | |
b7c49376 RS |
2924 | string = XVECTOR (items)->contents[i + 1]; |
2925 | pos = XVECTOR (items)->contents[i + 2]; | |
2926 | if (NILP (string)) | |
2927 | break; | |
9e20143a RS |
2928 | if (column >= XINT (pos) |
2929 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2930 | { |
2931 | item = XVECTOR (items)->contents[i]; | |
2932 | break; | |
2933 | } | |
5ec75a55 | 2934 | } |
9e20143a | 2935 | |
5ec75a55 RS |
2936 | position |
2937 | = Fcons (event->frame_or_window, | |
2938 | Fcons (Qmenu_bar, | |
2939 | Fcons (Fcons (event->x, event->y), | |
2940 | Fcons (make_number (event->timestamp), | |
2941 | Qnil)))); | |
2942 | ||
b7c49376 | 2943 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2944 | } |
eef045bf | 2945 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 2946 | |
9e20143a | 2947 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 2948 | |
8c18cbfb | 2949 | if (!WINDOWP (window)) |
78ced549 RS |
2950 | { |
2951 | window = event->frame_or_window; | |
2952 | posn = Qnil; | |
2953 | } | |
284f4730 | 2954 | else |
7b4aedb9 | 2955 | { |
9e20143a RS |
2956 | int pixcolumn, pixrow; |
2957 | column -= XINT (XWINDOW (window)->left); | |
2958 | row -= XINT (XWINDOW (window)->top); | |
2959 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2960 | XSETINT (event->x, pixcolumn); | |
2961 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2962 | |
7b4aedb9 JB |
2963 | if (part == 1) |
2964 | posn = Qmode_line; | |
2965 | else if (part == 2) | |
2966 | posn = Qvertical_line; | |
2967 | else | |
18cd2eeb KH |
2968 | XSETINT (posn, |
2969 | buffer_posn_from_coords (XWINDOW (window), | |
2970 | column, row)); | |
7b4aedb9 JB |
2971 | } |
2972 | ||
5ec75a55 RS |
2973 | position |
2974 | = Fcons (window, | |
2975 | Fcons (posn, | |
2976 | Fcons (Fcons (event->x, event->y), | |
2977 | Fcons (make_number (event->timestamp), | |
2978 | Qnil)))); | |
284f4730 | 2979 | } |
7b4aedb9 | 2980 | else |
88cb0656 | 2981 | { |
9e20143a RS |
2982 | Lisp_Object window; |
2983 | Lisp_Object portion_whole; | |
2984 | Lisp_Object part; | |
2985 | ||
2986 | window = event->frame_or_window; | |
2987 | portion_whole = Fcons (event->x, event->y); | |
2988 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2989 | |
2990 | position = | |
2991 | Fcons (window, | |
3c370943 | 2992 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2993 | Fcons (portion_whole, |
2994 | Fcons (make_number (event->timestamp), | |
9e20143a | 2995 | Fcons (part, Qnil))))); |
88cb0656 JB |
2996 | } |
2997 | ||
dbc4e1c1 JB |
2998 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2999 | ||
3000 | start_pos = *start_pos_ptr; | |
3001 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 3002 | |
559f9d04 RS |
3003 | is_double = (button == last_mouse_button |
3004 | && XINT (event->x) == last_mouse_x | |
3005 | && XINT (event->y) == last_mouse_y | |
3006 | && button_down_time != 0 | |
3007 | && (EQ (Vdouble_click_time, Qt) | |
3008 | || (INTEGERP (Vdouble_click_time) | |
3009 | && ((int)(event->timestamp - button_down_time) | |
3010 | < XINT (Vdouble_click_time))))); | |
3011 | last_mouse_button = button; | |
3012 | last_mouse_x = XINT (event->x); | |
3013 | last_mouse_y = XINT (event->y); | |
3014 | ||
7b4aedb9 JB |
3015 | /* If this is a button press, squirrel away the location, so |
3016 | we can decide later whether it was a click or a drag. */ | |
3017 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
3018 | { |
3019 | if (is_double) | |
3020 | { | |
3021 | double_click_count++; | |
3022 | event->modifiers |= ((double_click_count > 2) | |
3023 | ? triple_modifier | |
3024 | : double_modifier); | |
3025 | } | |
3026 | else | |
3027 | double_click_count = 1; | |
3028 | button_down_time = event->timestamp; | |
3029 | *start_pos_ptr = Fcopy_alist (position); | |
3030 | } | |
7b4aedb9 | 3031 | |
88cb0656 | 3032 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 3033 | see if this was a click or a drag. */ |
88cb0656 JB |
3034 | else if (event->modifiers & up_modifier) |
3035 | { | |
48e416d4 RS |
3036 | /* If we did not see a down before this up, |
3037 | ignore the up. Probably this happened because | |
3038 | the down event chose a menu item. | |
3039 | It would be an annoyance to treat the release | |
3040 | of the button that chose the menu item | |
3041 | as a separate event. */ | |
3042 | ||
8c18cbfb | 3043 | if (!CONSP (start_pos)) |
48e416d4 RS |
3044 | return Qnil; |
3045 | ||
88cb0656 | 3046 | event->modifiers &= ~up_modifier; |
48e416d4 | 3047 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 3048 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
3049 | event->modifiers |= click_modifier; |
3050 | else | |
48e416d4 | 3051 | #endif |
dbc4e1c1 JB |
3052 | { |
3053 | /* The third element of every position should be the (x,y) | |
3054 | pair. */ | |
9b8eb840 | 3055 | Lisp_Object down; |
dbc4e1c1 | 3056 | |
9b8eb840 | 3057 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
3058 | if (EQ (event->x, XCONS (down)->car) |
3059 | && EQ (event->y, XCONS (down)->cdr)) | |
3060 | { | |
bc536d84 | 3061 | event->modifiers |= click_modifier; |
fbcd35bd JB |
3062 | } |
3063 | else | |
3064 | { | |
559f9d04 | 3065 | button_down_time = 0; |
fbcd35bd JB |
3066 | event->modifiers |= drag_modifier; |
3067 | } | |
bc536d84 RS |
3068 | /* Don't check is_double; treat this as multiple |
3069 | if the down-event was multiple. */ | |
3070 | if (double_click_count > 1) | |
3071 | event->modifiers |= ((double_click_count > 2) | |
3072 | ? triple_modifier | |
3073 | : double_modifier); | |
dbc4e1c1 | 3074 | } |
88cb0656 JB |
3075 | } |
3076 | else | |
3077 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 3078 | the up_modifier set. */ |
88cb0656 JB |
3079 | abort (); |
3080 | ||
88cb0656 | 3081 | { |
7b4aedb9 | 3082 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3083 | Lisp_Object head; |
3084 | ||
3085 | head = modify_event_symbol (button, | |
3086 | event->modifiers, | |
3087 | Qmouse_click, Qnil, | |
3088 | lispy_mouse_names, &mouse_syms, | |
3089 | (sizeof (lispy_mouse_names) | |
3090 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3091 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3092 | return Fcons (head, |
3093 | Fcons (start_pos, | |
3094 | Fcons (position, | |
3095 | Qnil))); | |
fbcd35bd JB |
3096 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3097 | return Fcons (head, | |
3098 | Fcons (position, | |
3099 | Fcons (make_number (double_click_count), | |
3100 | Qnil))); | |
88cb0656 JB |
3101 | else |
3102 | return Fcons (head, | |
7b4aedb9 | 3103 | Fcons (position, |
88cb0656 JB |
3104 | Qnil)); |
3105 | } | |
284f4730 | 3106 | } |
5846638c | 3107 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 3108 | |
284f4730 JB |
3109 | /* The 'kind' field of the event is something we don't recognize. */ |
3110 | default: | |
48e416d4 | 3111 | abort (); |
284f4730 JB |
3112 | } |
3113 | } | |
3114 | ||
87485d6f | 3115 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
6cbff1cb | 3116 | |
284f4730 | 3117 | static Lisp_Object |
7b4aedb9 | 3118 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3119 | FRAME_PTR frame; |
7b4aedb9 | 3120 | Lisp_Object bar_window; |
3c370943 | 3121 | enum scroll_bar_part part; |
284f4730 | 3122 | Lisp_Object x, y; |
e5d77022 | 3123 | unsigned long time; |
284f4730 | 3124 | { |
68553292 | 3125 | #ifdef MULTI_FRAME |
3c370943 | 3126 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3127 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3128 | { |
9b8eb840 | 3129 | Lisp_Object part_sym; |
4bb994d1 | 3130 | |
9b8eb840 | 3131 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3132 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3133 | (Fcons (Fcons (bar_window, |
3c370943 | 3134 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3135 | Fcons (Fcons (x, y), |
3136 | Fcons (make_number (time), | |
cb5df6ae | 3137 | Fcons (part_sym, |
4bb994d1 JB |
3138 | Qnil))))), |
3139 | Qnil))); | |
3140 | } | |
3141 | ||
3142 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3143 | else |
68553292 | 3144 | #endif /* MULTI_FRAME */ |
284f4730 | 3145 | { |
4bb994d1 | 3146 | int area; |
9e20143a | 3147 | Lisp_Object window; |
4bb994d1 | 3148 | Lisp_Object posn; |
9e20143a RS |
3149 | int column, row; |
3150 | ||
68553292 | 3151 | #ifdef MULTI_FRAME |
9e20143a | 3152 | if (frame) |
68553292 RS |
3153 | #else |
3154 | if (1) | |
3155 | #endif | |
047688cb RS |
3156 | { |
3157 | /* It's in a frame; which window on that frame? */ | |
3158 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
3159 | window = window_from_coordinates (frame, column, row, &area); | |
3160 | } | |
9e20143a RS |
3161 | else |
3162 | window = Qnil; | |
4bb994d1 | 3163 | |
8c18cbfb | 3164 | if (WINDOWP (window)) |
4bb994d1 | 3165 | { |
9e20143a RS |
3166 | int pixcolumn, pixrow; |
3167 | column -= XINT (XWINDOW (window)->left); | |
3168 | row -= XINT (XWINDOW (window)->top); | |
3169 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3170 | XSETINT (x, pixcolumn); | |
3171 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3172 | |
3173 | if (area == 1) | |
3174 | posn = Qmode_line; | |
3175 | else if (area == 2) | |
3176 | posn = Qvertical_line; | |
3177 | else | |
18cd2eeb KH |
3178 | XSETINT (posn, |
3179 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3180 | } |
68553292 | 3181 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3182 | else if (frame != 0) |
3183 | { | |
18cd2eeb | 3184 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3185 | posn = Qnil; |
3186 | } | |
68553292 | 3187 | #endif |
284f4730 | 3188 | else |
4bb994d1 JB |
3189 | { |
3190 | window = Qnil; | |
3191 | posn = Qnil; | |
bb9e9bed KH |
3192 | XSETFASTINT (x, 0); |
3193 | XSETFASTINT (y, 0); | |
4bb994d1 | 3194 | } |
284f4730 | 3195 | |
4bb994d1 JB |
3196 | return Fcons (Qmouse_movement, |
3197 | Fcons (Fcons (window, | |
3198 | Fcons (posn, | |
3199 | Fcons (Fcons (x, y), | |
3200 | Fcons (make_number (time), | |
3201 | Qnil)))), | |
3202 | Qnil)); | |
3203 | } | |
284f4730 JB |
3204 | } |
3205 | ||
68553292 | 3206 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 3207 | |
cd21b839 JB |
3208 | /* Construct a switch frame event. */ |
3209 | static Lisp_Object | |
3210 | make_lispy_switch_frame (frame) | |
3211 | Lisp_Object frame; | |
3212 | { | |
3213 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3214 | } | |
0a7f1fc0 JB |
3215 | \f |
3216 | /* Manipulating modifiers. */ | |
284f4730 | 3217 | |
0a7f1fc0 | 3218 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3219 | |
0a7f1fc0 JB |
3220 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3221 | SYMBOL's name of the end of the modifiers; the string from this | |
3222 | position is the unmodified symbol name. | |
284f4730 | 3223 | |
6da3dd3a RS |
3224 | If MODIFIER_END is -1, parse *only* a modifier; expect |
3225 | the symbol name to be just one modifier, with no dash. | |
3226 | ||
0a7f1fc0 | 3227 | This doesn't use any caches. */ |
6da3dd3a | 3228 | |
0a7f1fc0 JB |
3229 | static int |
3230 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3231 | Lisp_Object symbol; |
0a7f1fc0 | 3232 | int *modifier_end; |
284f4730 JB |
3233 | { |
3234 | struct Lisp_String *name; | |
3235 | int i; | |
3236 | int modifiers; | |
6da3dd3a | 3237 | int just_one = ((int *) (-1) == modifier_end); |
284f4730 JB |
3238 | |
3239 | CHECK_SYMBOL (symbol, 1); | |
3240 | ||
3241 | modifiers = 0; | |
3242 | name = XSYMBOL (symbol)->name; | |
3243 | ||
0a7f1fc0 | 3244 | for (i = 0; i+2 <= name->size; ) |
6da3dd3a RS |
3245 | { |
3246 | int this_mod_end = 0; | |
3247 | int this_mod = 0; | |
284f4730 | 3248 | |
6da3dd3a RS |
3249 | /* See if the name continues with a modifier word. |
3250 | Check that the word appears, but don't check what follows it. | |
3251 | Set this_mod and this_mod_end to record what we find. */ | |
fce33686 | 3252 | |
6da3dd3a RS |
3253 | switch (name->data[i]) |
3254 | { | |
3255 | #define SINGLE_LETTER_MOD(BIT) \ | |
3256 | (this_mod_end = i + 1, this_mod = BIT) | |
3257 | ||
3258 | #define MULTI_LETTER_MOD(BIT, NAME, LEN) \ | |
3259 | if (i + LEN <= name->size \ | |
3260 | && ! strncmp (name->data + i, NAME, LEN)) \ | |
3261 | { \ | |
3262 | this_mod_end = i + LEN; \ | |
3263 | this_mod = BIT; \ | |
3264 | break; \ | |
3265 | } | |
fce33686 | 3266 | |
6da3dd3a RS |
3267 | case 'A': |
3268 | SINGLE_LETTER_MOD (alt_modifier); | |
3269 | break; | |
284f4730 | 3270 | |
6da3dd3a RS |
3271 | case 'a': |
3272 | MULTI_LETTER_MOD (alt_modifier, "alt", 3); | |
3273 | break; | |
fce33686 | 3274 | |
6da3dd3a RS |
3275 | case 'C': |
3276 | SINGLE_LETTER_MOD (ctrl_modifier); | |
3277 | break; | |
284f4730 | 3278 | |
6da3dd3a RS |
3279 | case 'c': |
3280 | MULTI_LETTER_MOD (ctrl_modifier, "ctrl", 4); | |
3281 | MULTI_LETTER_MOD (ctrl_modifier, "control", 7); | |
3282 | break; | |
fbcd35bd | 3283 | |
6da3dd3a RS |
3284 | case 'H': |
3285 | SINGLE_LETTER_MOD (hyper_modifier); | |
3286 | break; | |
3287 | ||
3288 | case 'h': | |
3289 | MULTI_LETTER_MOD (hyper_modifier, "hyper", 5); | |
3290 | break; | |
3291 | ||
3292 | case 'M': | |
3293 | SINGLE_LETTER_MOD (meta_modifier); | |
3294 | break; | |
3295 | ||
3296 | case 'm': | |
3297 | MULTI_LETTER_MOD (meta_modifier, "meta", 4); | |
3298 | break; | |
284f4730 | 3299 | |
6da3dd3a RS |
3300 | case 'S': |
3301 | SINGLE_LETTER_MOD (shift_modifier); | |
3302 | break; | |
3303 | ||
3304 | case 's': | |
3305 | MULTI_LETTER_MOD (shift_modifier, "shift", 5); | |
3306 | MULTI_LETTER_MOD (super_modifier, "super", 5); | |
3307 | SINGLE_LETTER_MOD (super_modifier); | |
3308 | break; | |
3309 | ||
3310 | case 'd': | |
3311 | MULTI_LETTER_MOD (drag_modifier, "drag", 4); | |
3312 | MULTI_LETTER_MOD (down_modifier, "down", 4); | |
3313 | MULTI_LETTER_MOD (double_modifier, "double", 6); | |
3314 | break; | |
3315 | ||
3316 | case 't': | |
3317 | MULTI_LETTER_MOD (triple_modifier, "triple", 6); | |
3318 | break; | |
0a7f1fc0 JB |
3319 | |
3320 | #undef SINGLE_LETTER_MOD | |
6da3dd3a RS |
3321 | #undef MULTI_LETTER_MOD |
3322 | } | |
3323 | ||
3324 | /* If we are looking for just a modifier, return now. | |
3325 | Return 0 if we didn't find one; return the | |
3326 | modifier bit if we did find one. */ | |
3327 | if (just_one) | |
3328 | { | |
3329 | if (this_mod_end == name->size) | |
3330 | return this_mod; | |
3331 | else | |
3332 | return 0; | |
3333 | } | |
3334 | ||
3335 | /* If we found no modifier, stop looking for them. */ | |
3336 | if (this_mod_end == 0) | |
3337 | break; | |
3338 | ||
3339 | /* Check there is a dash after the modifier, so that it | |
3340 | really is a modifier. */ | |
3341 | if (this_mod_end >= name->size || name->data[this_mod_end] != '-') | |
3342 | break; | |
3343 | ||
3344 | /* This modifier is real; look for another. */ | |
3345 | modifiers |= this_mod; | |
3346 | i = this_mod_end + 1; | |
3347 | } | |
284f4730 | 3348 | |
0a7f1fc0 | 3349 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3350 | if (! (modifiers & (down_modifier | drag_modifier |
3351 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3352 | && i + 7 == name->size |
4bb994d1 | 3353 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3354 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3355 | modifiers |= click_modifier; |
3356 | ||
3357 | if (modifier_end) | |
3358 | *modifier_end = i; | |
3359 | ||
3360 | return modifiers; | |
3361 | } | |
3362 | ||
0a7f1fc0 JB |
3363 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS |
3364 | prepended to the string BASE[0..BASE_LEN-1]. | |
3365 | This doesn't use any caches. */ | |
3366 | static Lisp_Object | |
3367 | apply_modifiers_uncached (modifiers, base, base_len) | |
3368 | int modifiers; | |
3369 | char *base; | |
3370 | int base_len; | |
3371 | { | |
3372 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3373 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3374 | reference to it. */ | |
3375 | char *new_mods = | |
fbcd35bd | 3376 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3377 | int mod_len; |
284f4730 | 3378 | |
284f4730 | 3379 | { |
0a7f1fc0 JB |
3380 | char *p = new_mods; |
3381 | ||
3382 | /* Only the event queue may use the `up' modifier; it should always | |
3383 | be turned into a click or drag event before presented to lisp code. */ | |
3384 | if (modifiers & up_modifier) | |
3385 | abort (); | |
3386 | ||
3387 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3388 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3389 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3390 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3391 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3392 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3393 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3394 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3395 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3396 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3397 | /* The click modifier is denoted by the absence of other modifiers. */ |
3398 | ||
3399 | *p = '\0'; | |
3400 | ||
3401 | mod_len = p - new_mods; | |
3402 | } | |
284f4730 | 3403 | |
0a7f1fc0 | 3404 | { |
9b8eb840 | 3405 | Lisp_Object new_name; |
0a7f1fc0 | 3406 | |
9b8eb840 | 3407 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3408 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3409 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3410 | |
3411 | return Fintern (new_name, Qnil); | |
3412 | } | |
3413 | } | |
3414 | ||
3415 | ||
0a7f1fc0 JB |
3416 | static char *modifier_names[] = |
3417 | { | |
fbcd35bd | 3418 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3419 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3420 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3421 | }; |
80645119 | 3422 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3423 | |
3424 | static Lisp_Object modifier_symbols; | |
3425 | ||
3426 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3427 | static Lisp_Object | |
3428 | lispy_modifier_list (modifiers) | |
3429 | int modifiers; | |
3430 | { | |
3431 | Lisp_Object modifier_list; | |
3432 | int i; | |
3433 | ||
3434 | modifier_list = Qnil; | |
80645119 | 3435 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3436 | if (modifiers & (1<<i)) |
80645119 JB |
3437 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3438 | modifier_list); | |
0a7f1fc0 JB |
3439 | |
3440 | return modifier_list; | |
3441 | } | |
3442 | ||
3443 | ||
3444 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3445 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3446 | MASK is the set of modifiers present in SYMBOL's name. | |
3447 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3448 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3449 | Qevent_symbol_elements property. */ | |
3450 | static Lisp_Object | |
3451 | parse_modifiers (symbol) | |
3452 | Lisp_Object symbol; | |
3453 | { | |
9b8eb840 | 3454 | Lisp_Object elements; |
0a7f1fc0 | 3455 | |
9b8eb840 | 3456 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3457 | if (CONSP (elements)) |
3458 | return elements; | |
3459 | else | |
3460 | { | |
3461 | int end; | |
3462 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3463 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3464 | Lisp_Object mask; |
3465 | ||
9b8eb840 KH |
3466 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3467 | XSYMBOL (symbol)->name->size - end), | |
3468 | Qnil); | |
3469 | ||
734fef94 JB |
3470 | if (modifiers & ~((1<<VALBITS) - 1)) |
3471 | abort (); | |
bb9e9bed | 3472 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3473 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3474 | ||
3475 | /* Cache the parsing results on SYMBOL. */ | |
3476 | Fput (symbol, Qevent_symbol_element_mask, | |
3477 | elements); | |
3478 | Fput (symbol, Qevent_symbol_elements, | |
3479 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3480 | ||
3481 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3482 | it would be nice to put that in unmodified's cache. | |
3483 | But we can't, since we're not sure that parse_modifiers is | |
3484 | canonical. */ | |
3485 | ||
3486 | return elements; | |
3487 | } | |
3488 | } | |
3489 | ||
3490 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3491 | BASE must be unmodified. | |
3492 | ||
3493 | This is like apply_modifiers_uncached, but uses BASE's | |
3494 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3495 | Qevent_symbol_elements properties, since it has that info anyway. |
3496 | ||
3497 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3498 | the modified symbol. */ | |
0a7f1fc0 JB |
3499 | static Lisp_Object |
3500 | apply_modifiers (modifiers, base) | |
3501 | int modifiers; | |
3502 | Lisp_Object base; | |
3503 | { | |
7b4aedb9 | 3504 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3505 | |
80645119 JB |
3506 | /* Mask out upper bits. We don't know where this value's been. */ |
3507 | modifiers &= (1<<VALBITS) - 1; | |
3508 | ||
0a7f1fc0 | 3509 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3510 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3511 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3512 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3513 | |
3514 | if (CONSP (entry)) | |
7b4aedb9 JB |
3515 | new_symbol = XCONS (entry)->cdr; |
3516 | else | |
3517 | { | |
3518 | /* We have to create the symbol ourselves. */ | |
3519 | new_symbol = apply_modifiers_uncached (modifiers, | |
3520 | XSYMBOL (base)->name->data, | |
3521 | XSYMBOL (base)->name->size); | |
3522 | ||
3523 | /* Add the new symbol to the base's cache. */ | |
3524 | entry = Fcons (index, new_symbol); | |
3525 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3526 | ||
3527 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3528 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3529 | Fput (new_symbol, Qevent_symbol_element_mask, |
3530 | Fcons (base, Fcons (index, Qnil))); | |
3531 | Fput (new_symbol, Qevent_symbol_elements, | |
3532 | Fcons (base, lispy_modifier_list (modifiers))); | |
3533 | } | |
0a7f1fc0 | 3534 | |
7b4aedb9 JB |
3535 | /* Make sure this symbol is of the same kind as BASE. |
3536 | ||
3537 | You'd think we could just set this once and for all when we | |
3538 | intern the symbol above, but reorder_modifiers may call us when | |
3539 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3540 | because it has a Qmodifier_cache property it must have its |
3541 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3542 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3543 | { | |
9b8eb840 | 3544 | Lisp_Object kind; |
7b4aedb9 | 3545 | |
9b8eb840 | 3546 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3547 | if (! NILP (kind)) |
3548 | Fput (new_symbol, Qevent_kind, kind); | |
3549 | } | |
3550 | ||
3551 | return new_symbol; | |
0a7f1fc0 JB |
3552 | } |
3553 | ||
3554 | ||
3555 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3556 | return a symbol with the modifiers placed in the canonical order. | |
3557 | Canonical order is alphabetical, except for down and drag, which | |
3558 | always come last. The 'click' modifier is never written out. | |
3559 | ||
3560 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3561 | and M-C-foo end up being equivalent in the keymap. */ | |
3562 | ||
3563 | Lisp_Object | |
3564 | reorder_modifiers (symbol) | |
3565 | Lisp_Object symbol; | |
3566 | { | |
3567 | /* It's hopefully okay to write the code this way, since everything | |
3568 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3569 | Lisp_Object parsed; |
0a7f1fc0 | 3570 | |
9b8eb840 | 3571 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3572 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3573 | XCONS (parsed)->car); | |
3574 | } | |
3575 | ||
3576 | ||
284f4730 JB |
3577 | /* For handling events, we often want to produce a symbol whose name |
3578 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3579 | to some base, like the name of a function key or mouse button. | |
3580 | modify_event_symbol produces symbols of this sort. | |
3581 | ||
3582 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3583 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3584 | in the table. | |
3585 | ||
80e4aa30 RS |
3586 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3587 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3588 | ||
284f4730 JB |
3589 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3590 | persist between calls to modify_event_symbol that it can use to | |
3591 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3592 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3593 | |
3594 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3595 | ||
3596 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3597 | whose prefixes should be applied to the symbol name. | |
3598 | ||
3599 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3600 | the returned symbol. |
3601 | ||
3602 | The symbols we create are supposed to have an | |
eb8c3be9 | 3603 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3604 | in the symbol's name. */ |
3605 | ||
284f4730 | 3606 | static Lisp_Object |
80e4aa30 RS |
3607 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3608 | name_table, symbol_table, table_size) | |
284f4730 JB |
3609 | int symbol_num; |
3610 | unsigned modifiers; | |
3611 | Lisp_Object symbol_kind; | |
80e4aa30 | 3612 | Lisp_Object name_alist; |
284f4730 JB |
3613 | char **name_table; |
3614 | Lisp_Object *symbol_table; | |
3615 | int table_size; | |
3616 | { | |
80e4aa30 RS |
3617 | Lisp_Object value; |
3618 | Lisp_Object symbol_int; | |
3619 | ||
18cd2eeb | 3620 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3621 | |
3622 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3623 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3624 | return Qnil; |
284f4730 | 3625 | |
80e4aa30 RS |
3626 | if (CONSP (*symbol_table)) |
3627 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3628 | ||
0a7f1fc0 | 3629 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3630 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3631 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3632 | we've never used that symbol before. */ | |
80e4aa30 | 3633 | else |
88cb0656 | 3634 | { |
80e4aa30 RS |
3635 | if (! VECTORP (*symbol_table) |
3636 | || XVECTOR (*symbol_table)->size != table_size) | |
3637 | { | |
3638 | Lisp_Object size; | |
0a7f1fc0 | 3639 | |
bb9e9bed | 3640 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3641 | *symbol_table = Fmake_vector (size, Qnil); |
3642 | } | |
284f4730 | 3643 | |
80e4aa30 RS |
3644 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3645 | } | |
284f4730 | 3646 | |
0a7f1fc0 | 3647 | /* Have we already used this symbol before? */ |
80e4aa30 | 3648 | if (NILP (value)) |
284f4730 | 3649 | { |
0a7f1fc0 | 3650 | /* No; let's create it. */ |
80e4aa30 | 3651 | if (!NILP (name_alist)) |
b64b4075 | 3652 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3653 | else if (name_table[symbol_num]) |
3654 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3655 | |
3656 | if (NILP (value)) | |
d1f50460 RS |
3657 | { |
3658 | char buf[20]; | |
3659 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3660 | value = intern (buf); |
d1f50460 | 3661 | } |
0a7f1fc0 | 3662 | |
80e4aa30 RS |
3663 | if (CONSP (*symbol_table)) |
3664 | *symbol_table = Fcons (value, *symbol_table); | |
3665 | else | |
3666 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3667 | ||
0a7f1fc0 JB |
3668 | /* Fill in the cache entries for this symbol; this also |
3669 | builds the Qevent_symbol_elements property, which the user | |
3670 | cares about. */ | |
80e4aa30 RS |
3671 | apply_modifiers (modifiers & click_modifier, value); |
3672 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3673 | } |
88cb0656 | 3674 | |
0a7f1fc0 | 3675 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3676 | return apply_modifiers (modifiers, value); |
284f4730 | 3677 | } |
6da3dd3a RS |
3678 | \f |
3679 | /* Convert a list that represents an event type, | |
3680 | such as (ctrl meta backspace), into the usual representation of that | |
3681 | event type as a number or a symbol. */ | |
3682 | ||
3683 | Lisp_Object | |
3684 | convert_event_type_list (event) | |
3685 | Lisp_Object event; | |
3686 | { | |
3687 | Lisp_Object base; | |
3688 | int modifiers = 0; | |
3689 | Lisp_Object rest; | |
3690 | ||
3691 | base = Qnil; | |
3692 | rest = event; | |
3693 | while (CONSP (rest)) | |
3694 | { | |
3695 | Lisp_Object elt; | |
3696 | int this = 0; | |
3697 | ||
3698 | elt = XCONS (rest)->car; | |
3699 | ||
3700 | if (SYMBOLP (elt)) | |
3701 | this = parse_modifiers_uncached (elt, -1); | |
3702 | ||
3703 | if (this != 0) | |
3704 | modifiers |= this; | |
3705 | else if (!NILP (base)) | |
3706 | error ("Two bases given in one event"); | |
3707 | else | |
3708 | base = elt; | |
3709 | ||
3710 | rest = XCONS (rest)->cdr; | |
3711 | } | |
3712 | ||
3713 | if (INTEGERP (base)) | |
3714 | { | |
3715 | if (modifiers & ctrl_modifier) | |
3716 | return make_number ((modifiers & ~ ctrl_modifier) | |
3717 | | make_ctrl_char (XINT (base))); | |
3718 | else | |
3719 | return make_number (modifiers | XINT (base)); | |
3720 | } | |
3721 | else if (SYMBOLP (base)) | |
3722 | return apply_modifiers (modifiers, base); | |
3723 | else | |
3724 | error ("Invalid base event"); | |
3725 | } | |
3726 | ||
3727 | /* Return 1 if EVENT is a list whose elements are all integers or symbols. | |
3728 | Such a list is not valid as an event, | |
3729 | but it can be a Lucid-style event type list. */ | |
3730 | ||
3731 | int | |
3732 | lucid_event_type_list_p (object) | |
3733 | Lisp_Object object; | |
3734 | { | |
3735 | Lisp_Object tail; | |
3736 | ||
3737 | if (! CONSP (object)) | |
3738 | return 0; | |
3739 | ||
3740 | for (tail = object; CONSP (tail); tail = XCONS (tail)->cdr) | |
3741 | { | |
3742 | Lisp_Object elt; | |
3743 | elt = XCONS (tail)->car; | |
3744 | if (! (INTEGERP (elt) || SYMBOLP (elt))) | |
3745 | return 0; | |
3746 | } | |
3747 | ||
3748 | return NILP (tail); | |
3749 | } | |
3750 | ||
0a7f1fc0 | 3751 | |
284f4730 | 3752 | \f |
284f4730 JB |
3753 | /* Store into *addr a value nonzero if terminal input chars are available. |
3754 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3755 | but works even if FIONREAD does not exist. | |
3756 | (In fact, this may actually read some input.) */ | |
3757 | ||
3758 | static void | |
3759 | get_input_pending (addr) | |
3760 | int *addr; | |
3761 | { | |
3762 | /* First of all, have we already counted some input? */ | |
3763 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3764 | ||
3765 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3766 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3767 | return; | |
3768 | ||
3769 | /* Try to read some input and see how much we get. */ | |
3770 | gobble_input (0); | |
3771 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3772 | } | |
3773 | ||
81931ba1 | 3774 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3775 | |
3776 | int | |
3777 | gobble_input (expected) | |
3778 | int expected; | |
3779 | { | |
3780 | #ifndef VMS | |
3781 | #ifdef SIGIO | |
3782 | if (interrupt_input) | |
3783 | { | |
32676c08 | 3784 | SIGMASKTYPE mask; |
e065a56e | 3785 | mask = sigblockx (SIGIO); |
284f4730 | 3786 | read_avail_input (expected); |
e065a56e | 3787 | sigsetmask (mask); |
284f4730 JB |
3788 | } |
3789 | else | |
81931ba1 RS |
3790 | #ifdef POLL_FOR_INPUT |
3791 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3792 | { | |
3793 | SIGMASKTYPE mask; | |
3794 | mask = sigblockx (SIGALRM); | |
3795 | read_avail_input (expected); | |
3796 | sigsetmask (mask); | |
3797 | } | |
3798 | else | |
87485d6f | 3799 | #endif |
284f4730 JB |
3800 | #endif |
3801 | read_avail_input (expected); | |
3802 | #endif | |
3803 | } | |
a8015ab5 | 3804 | |
241ceaf7 RS |
3805 | /* Put a buffer_switch_event in the buffer |
3806 | so that read_key_sequence will notice the new current buffer. */ | |
3807 | ||
a8015ab5 KH |
3808 | record_asynch_buffer_change () |
3809 | { | |
3810 | struct input_event event; | |
a30f0615 RS |
3811 | Lisp_Object tem; |
3812 | ||
a8015ab5 KH |
3813 | event.kind = buffer_switch_event; |
3814 | event.frame_or_window = Qnil; | |
241ceaf7 | 3815 | |
f65e6f7d | 3816 | #ifdef subprocesses |
a30f0615 RS |
3817 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3818 | The purpose of the event is to make read_key_sequence look up the | |
3819 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3820 | and the event could cause trouble by messing up (input-pending-p). */ | |
3821 | tem = Fwaiting_for_user_input_p (); | |
3822 | if (NILP (tem)) | |
3823 | return; | |
f65e6f7d RS |
3824 | #else |
3825 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3826 | return; | |
3827 | #endif | |
a30f0615 | 3828 | |
241ceaf7 RS |
3829 | /* Make sure no interrupt happens while storing the event. */ |
3830 | #ifdef SIGIO | |
3831 | if (interrupt_input) | |
3832 | { | |
3833 | SIGMASKTYPE mask; | |
3834 | mask = sigblockx (SIGIO); | |
3835 | kbd_buffer_store_event (&event); | |
3836 | sigsetmask (mask); | |
3837 | } | |
3838 | else | |
3839 | #endif | |
3840 | { | |
3841 | stop_polling (); | |
3842 | kbd_buffer_store_event (&event); | |
3843 | start_polling (); | |
3844 | } | |
a8015ab5 | 3845 | } |
284f4730 JB |
3846 | \f |
3847 | #ifndef VMS | |
3848 | ||
3849 | /* Read any terminal input already buffered up by the system | |
3850 | into the kbd_buffer, but do not wait. | |
3851 | ||
3852 | EXPECTED should be nonzero if the caller knows there is some input. | |
3853 | ||
3854 | Except on VMS, all input is read by this function. | |
3855 | If interrupt_input is nonzero, this function MUST be called | |
3856 | only when SIGIO is blocked. | |
3857 | ||
3858 | Returns the number of keyboard chars read, or -1 meaning | |
3859 | this is a bad time to try to read input. */ | |
3860 | ||
3861 | static int | |
3862 | read_avail_input (expected) | |
3863 | int expected; | |
3864 | { | |
3865 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3866 | register int i; | |
3867 | int nread; | |
3868 | ||
3869 | if (read_socket_hook) | |
3870 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
3871 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
3872 | expected, expected); | |
284f4730 JB |
3873 | else |
3874 | { | |
17270835 RS |
3875 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3876 | the kbd_buffer can really hold. That may prevent loss | |
3877 | of characters on some systems when input is stuffed at us. */ | |
3878 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3879 | int n_to_read; |
284f4730 | 3880 | |
58788063 | 3881 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
3882 | #ifdef WINDOWSNT |
3883 | return 0; | |
3884 | #else /* not WINDOWSNT */ | |
80e4aa30 | 3885 | #ifdef MSDOS |
58788063 RS |
3886 | n_to_read = dos_keysns (); |
3887 | if (n_to_read == 0) | |
3888 | return 0; | |
c3a2738c | 3889 | #else /* not MSDOS */ |
284f4730 JB |
3890 | #ifdef FIONREAD |
3891 | /* Find out how much input is available. */ | |
437f6112 | 3892 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3893 | /* Formerly simply reported no input, but that sometimes led to |
3894 | a failure of Emacs to terminate. | |
3895 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3896 | /* ??? Is it really right to send the signal just to this process |
3897 | rather than to the whole process group? | |
3898 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3899 | kill (getpid (), SIGHUP); |
58788063 | 3900 | if (n_to_read == 0) |
284f4730 | 3901 | return 0; |
58788063 RS |
3902 | if (n_to_read > sizeof cbuf) |
3903 | n_to_read = sizeof cbuf; | |
284f4730 | 3904 | #else /* no FIONREAD */ |
482952ef | 3905 | #if defined(USG) || defined(DGUX) |
284f4730 | 3906 | /* Read some input if available, but don't wait. */ |
58788063 | 3907 | n_to_read = sizeof cbuf; |
437f6112 | 3908 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
3909 | #else |
3910 | you lose; | |
3911 | #endif | |
3912 | #endif | |
80e4aa30 | 3913 | #endif /* not MSDOS */ |
bc536d84 | 3914 | #endif /* not WINDOWSNT */ |
284f4730 | 3915 | |
58788063 RS |
3916 | /* Now read; for one reason or another, this will not block. |
3917 | NREAD is set to the number of chars read. */ | |
9134775b | 3918 | do |
284f4730 | 3919 | { |
80e4aa30 RS |
3920 | #ifdef MSDOS |
3921 | cbuf[0] = dos_keyread(); | |
3922 | nread = 1; | |
3923 | #else | |
437f6112 | 3924 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 3925 | #endif |
762f2b92 | 3926 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3927 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3928 | This looks incorrect, but it isn't, because _BSD causes | |
3929 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3930 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3931 | if (nread == 0) |
80e4aa30 | 3932 | kill (0, SIGHUP); |
284f4730 | 3933 | #endif |
9134775b | 3934 | } |
791587ee KH |
3935 | while ( |
3936 | /* We used to retry the read if it was interrupted. | |
3937 | But this does the wrong thing when O_NDELAY causes | |
3938 | an EAGAIN error. Does anybody know of a situation | |
3939 | where a retry is actually needed? */ | |
3940 | #if 0 | |
3941 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3942 | #ifdef EFAULT |
9134775b | 3943 | || errno == EFAULT |
80e4aa30 | 3944 | #endif |
284f4730 | 3945 | #ifdef EBADSLT |
9134775b | 3946 | || errno == EBADSLT |
284f4730 | 3947 | #endif |
791587ee KH |
3948 | ) |
3949 | #else | |
3950 | 0 | |
3951 | #endif | |
3952 | ); | |
284f4730 JB |
3953 | |
3954 | #ifndef FIONREAD | |
02c2c53f | 3955 | #if defined (USG) || defined (DGUX) |
437f6112 | 3956 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 3957 | #endif /* USG or DGUX */ |
284f4730 JB |
3958 | #endif /* no FIONREAD */ |
3959 | for (i = 0; i < nread; i++) | |
3960 | { | |
3961 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3962 | buf[i].modifiers = 0; |
b04904fb | 3963 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3964 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3965 | if (meta_key != 2) |
3966 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
3967 | |
3968 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 3969 | #ifdef MULTI_FRAME |
18cd2eeb | 3970 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
3971 | #else |
3972 | buf[i].frame_or_window = Qnil; | |
3973 | #endif | |
284f4730 JB |
3974 | } |
3975 | } | |
3976 | ||
3977 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3978 | for (i = 0; i < nread; i++) | |
3979 | { | |
3980 | kbd_buffer_store_event (&buf[i]); | |
3981 | /* Don't look at input that follows a C-g too closely. | |
3982 | This reduces lossage due to autorepeat on C-g. */ | |
3983 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 3984 | && buf[i].code == quit_char) |
284f4730 JB |
3985 | break; |
3986 | } | |
3987 | ||
3988 | return nread; | |
3989 | } | |
3990 | #endif /* not VMS */ | |
3991 | \f | |
3992 | #ifdef SIGIO /* for entire page */ | |
3993 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3994 | ||
2ce30ea2 | 3995 | SIGTYPE |
284f4730 JB |
3996 | input_available_signal (signo) |
3997 | int signo; | |
3998 | { | |
3999 | /* Must preserve main program's value of errno. */ | |
4000 | int old_errno = errno; | |
4001 | #ifdef BSD4_1 | |
4002 | extern int select_alarmed; | |
4003 | #endif | |
4004 | ||
4005 | #ifdef USG | |
4006 | /* USG systems forget handlers when they are used; | |
4007 | must reestablish each time */ | |
4008 | signal (signo, input_available_signal); | |
4009 | #endif /* USG */ | |
4010 | ||
4011 | #ifdef BSD4_1 | |
4012 | sigisheld (SIGIO); | |
4013 | #endif | |
4014 | ||
ffd56f97 JB |
4015 | if (input_available_clear_time) |
4016 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
4017 | |
4018 | while (1) | |
4019 | { | |
4020 | int nread; | |
4021 | nread = read_avail_input (1); | |
4022 | /* -1 means it's not ok to read the input now. | |
4023 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
4024 | 0 means there was no keyboard input available. */ | |
4025 | if (nread <= 0) | |
4026 | break; | |
4027 | ||
4028 | #ifdef BSD4_1 | |
4029 | select_alarmed = 1; /* Force the select emulator back to life */ | |
4030 | #endif | |
4031 | } | |
4032 | ||
4033 | #ifdef BSD4_1 | |
4034 | sigfree (); | |
4035 | #endif | |
4036 | errno = old_errno; | |
4037 | } | |
4038 | #endif /* SIGIO */ | |
ad163903 JB |
4039 | |
4040 | /* Send ourselves a SIGIO. | |
4041 | ||
4042 | This function exists so that the UNBLOCK_INPUT macro in | |
4043 | blockinput.h can have some way to take care of input we put off | |
4044 | dealing with, without assuming that every file which uses | |
4045 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
4046 | void | |
4047 | reinvoke_input_signal () | |
4048 | { | |
4049 | #ifdef SIGIO | |
4050 | kill (0, SIGIO); | |
4051 | #endif | |
4052 | } | |
4053 | ||
4054 | ||
284f4730 JB |
4055 | \f |
4056 | /* Return the prompt-string of a sparse keymap. | |
4057 | This is the first element which is a string. | |
4058 | Return nil if there is none. */ | |
4059 | ||
4060 | Lisp_Object | |
4061 | map_prompt (map) | |
4062 | Lisp_Object map; | |
4063 | { | |
4064 | while (CONSP (map)) | |
4065 | { | |
4066 | register Lisp_Object tem; | |
4067 | tem = Fcar (map); | |
8c18cbfb | 4068 | if (STRINGP (tem)) |
284f4730 JB |
4069 | return tem; |
4070 | map = Fcdr (map); | |
4071 | } | |
4072 | return Qnil; | |
4073 | } | |
4074 | ||
b7c49376 RS |
4075 | static void menu_bar_item (); |
4076 | static void menu_bar_one_keymap (); | |
4077 | ||
4078 | /* These variables hold the vector under construction within | |
4079 | menu_bar_items and its subroutines, and the current index | |
4080 | for storing into that vector. */ | |
4081 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 4082 | static int menu_bar_items_index; |
5ec75a55 | 4083 | |
b7c49376 RS |
4084 | /* Return a vector of menu items for a menu bar, appropriate |
4085 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 4086 | KEY STRING MAPLIST. |
b7c49376 RS |
4087 | |
4088 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
4089 | |
4090 | Lisp_Object | |
b7c49376 RS |
4091 | menu_bar_items (old) |
4092 | Lisp_Object old; | |
5ec75a55 RS |
4093 | { |
4094 | /* The number of keymaps we're scanning right now, and the number of | |
4095 | keymaps we have allocated space for. */ | |
4096 | int nmaps; | |
4097 | ||
4098 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
4099 | in the current keymaps, or nil where it is not a prefix. */ | |
4100 | Lisp_Object *maps; | |
4101 | ||
9f9c0e27 | 4102 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
4103 | |
4104 | Lisp_Object result; | |
4105 | ||
4106 | int mapno; | |
47d319aa | 4107 | Lisp_Object oquit; |
5ec75a55 | 4108 | |
b7c49376 RS |
4109 | int i; |
4110 | ||
4111 | struct gcpro gcpro1; | |
4112 | ||
db60d856 JB |
4113 | /* In order to build the menus, we need to call the keymap |
4114 | accessors. They all call QUIT. But this function is called | |
4115 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
4116 | quitting while building the menus. |
4117 | We do this instead of specbind because (1) errors will clear it anyway | |
4118 | and (2) this avoids risk of specpdl overflow. */ | |
4119 | oquit = Vinhibit_quit; | |
4120 | Vinhibit_quit = Qt; | |
db60d856 | 4121 | |
b7c49376 RS |
4122 | if (!NILP (old)) |
4123 | menu_bar_items_vector = old; | |
4124 | else | |
4125 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
4126 | menu_bar_items_index = 0; | |
4127 | ||
4128 | GCPRO1 (menu_bar_items_vector); | |
4129 | ||
5ec75a55 RS |
4130 | /* Build our list of keymaps. |
4131 | If we recognize a function key and replace its escape sequence in | |
4132 | keybuf with its symbol, or if the sequence starts with a mouse | |
4133 | click and we need to switch buffers, we jump back here to rebuild | |
4134 | the initial keymaps from the current buffer. */ | |
4135 | { | |
4136 | Lisp_Object *tmaps; | |
4137 | ||
d0a49716 RS |
4138 | /* Should overriding-local-map apply, here? */ |
4139 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 4140 | { |
d0a49716 RS |
4141 | if (NILP (Voverriding_local_map)) |
4142 | { | |
4143 | /* Yes, and it is nil. Use just global map. */ | |
4144 | nmaps = 1; | |
4145 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4146 | } | |
4147 | else | |
4148 | { | |
4149 | /* Yes, and it is non-nil. Use it and the global map. */ | |
4150 | nmaps = 2; | |
4151 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4152 | maps[0] = Voverriding_local_map; | |
4153 | } | |
9dd3131c RS |
4154 | } |
4155 | else | |
4156 | { | |
d0a49716 | 4157 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
4158 | nmaps = current_minor_maps (0, &tmaps) + 2; |
4159 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
4160 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 4161 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4162 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 4163 | #else |
9dd3131c | 4164 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 4165 | #endif |
9dd3131c | 4166 | } |
7e6992e0 | 4167 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
4168 | } |
4169 | ||
4170 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
4171 | ||
4172 | result = Qnil; | |
4173 | ||
e58aa385 | 4174 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
4175 | { |
4176 | if (! NILP (maps[mapno])) | |
e74fbc70 | 4177 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
4178 | else |
4179 | def = Qnil; | |
4180 | ||
4181 | tem = Fkeymapp (def); | |
4182 | if (!NILP (tem)) | |
b7c49376 | 4183 | menu_bar_one_keymap (def); |
5ec75a55 RS |
4184 | } |
4185 | ||
b7c49376 RS |
4186 | /* Move to the end those items that should be at the end. */ |
4187 | ||
9f9c0e27 RS |
4188 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
4189 | { | |
b7c49376 RS |
4190 | int i; |
4191 | int end = menu_bar_items_index; | |
4192 | ||
4193 | for (i = 0; i < end; i += 3) | |
4194 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4195 | { | |
0301268e RS |
4196 | Lisp_Object tem0, tem1, tem2; |
4197 | /* Move the item at index I to the end, | |
4198 | shifting all the others forward. */ | |
4199 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
4200 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
4201 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4202 | if (end > i + 3) | |
4203 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4204 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4205 | (end - i - 3) * sizeof (Lisp_Object)); | |
4206 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
4207 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
4208 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
4209 | break; | |
b7c49376 RS |
4210 | } |
4211 | } | |
9f9c0e27 | 4212 | |
b7c49376 RS |
4213 | /* Add nil, nil, nil at the end. */ |
4214 | i = menu_bar_items_index; | |
4215 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4216 | { | |
4217 | Lisp_Object tem; | |
4218 | int newsize = 2 * i; | |
4219 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4220 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4221 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4222 | menu_bar_items_vector = tem; | |
9f9c0e27 | 4223 | } |
b7c49376 RS |
4224 | /* Add this item. */ |
4225 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4226 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4227 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4228 | menu_bar_items_index = i; | |
a73c5e29 | 4229 | |
47d319aa | 4230 | Vinhibit_quit = oquit; |
b7c49376 RS |
4231 | UNGCPRO; |
4232 | return menu_bar_items_vector; | |
5ec75a55 RS |
4233 | } |
4234 | \f | |
4235 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 4236 | in menu_bar_items_vector. */ |
5ec75a55 | 4237 | |
b7c49376 RS |
4238 | static void |
4239 | menu_bar_one_keymap (keymap) | |
4240 | Lisp_Object keymap; | |
5ec75a55 RS |
4241 | { |
4242 | Lisp_Object tail, item, key, binding, item_string, table; | |
4243 | ||
4244 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 4245 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
4246 | { |
4247 | item = XCONS (tail)->car; | |
8c18cbfb | 4248 | if (CONSP (item)) |
5ec75a55 RS |
4249 | { |
4250 | key = XCONS (item)->car; | |
4251 | binding = XCONS (item)->cdr; | |
8c18cbfb | 4252 | if (CONSP (binding)) |
5ec75a55 RS |
4253 | { |
4254 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4255 | if (STRINGP (item_string)) |
b7c49376 | 4256 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4257 | } |
e58aa385 | 4258 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4259 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 4260 | } |
8c18cbfb | 4261 | else if (VECTORP (item)) |
5ec75a55 RS |
4262 | { |
4263 | /* Loop over the char values represented in the vector. */ | |
4264 | int len = XVECTOR (item)->size; | |
4265 | int c; | |
4266 | for (c = 0; c < len; c++) | |
4267 | { | |
4268 | Lisp_Object character; | |
bb9e9bed | 4269 | XSETFASTINT (character, c); |
5ec75a55 | 4270 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4271 | if (CONSP (binding)) |
5ec75a55 RS |
4272 | { |
4273 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4274 | if (STRINGP (item_string)) |
b7c49376 | 4275 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4276 | } |
e58aa385 | 4277 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4278 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4279 | } |
4280 | } | |
4281 | } | |
5ec75a55 RS |
4282 | } |
4283 | ||
047a8ea7 RS |
4284 | /* This is used as the handler when calling internal_condition_case_1. */ |
4285 | ||
4286 | static Lisp_Object | |
4287 | menu_bar_item_1 (arg) | |
4288 | Lisp_Object arg; | |
4289 | { | |
4290 | return Qnil; | |
4291 | } | |
4292 | ||
f5e09c8b RS |
4293 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4294 | If there's already an item for KEY, add this DEF to it. */ | |
4295 | ||
b7c49376 RS |
4296 | static void |
4297 | menu_bar_item (key, item_string, def) | |
4298 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4299 | { |
e58aa385 | 4300 | Lisp_Object tem; |
5ec75a55 | 4301 | Lisp_Object enabled; |
b7c49376 | 4302 | int i; |
5ec75a55 | 4303 | |
e58aa385 RS |
4304 | if (EQ (def, Qundefined)) |
4305 | { | |
f5e09c8b | 4306 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4307 | discard any previously made menu bar item. */ |
b7c49376 RS |
4308 | |
4309 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4310 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4311 | { | |
4312 | if (menu_bar_items_index > i + 3) | |
4313 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4314 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4315 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4316 | menu_bar_items_index -= 3; | |
4317 | return; | |
4318 | } | |
8aa034e1 RS |
4319 | |
4320 | /* If there's no definition for this key yet, | |
4321 | just ignore `undefined'. */ | |
4322 | return; | |
e58aa385 RS |
4323 | } |
4324 | ||
5ec75a55 RS |
4325 | /* See if this entry is enabled. */ |
4326 | enabled = Qt; | |
4327 | ||
8c18cbfb | 4328 | if (SYMBOLP (def)) |
5ec75a55 RS |
4329 | { |
4330 | /* No property, or nil, means enable. | |
4331 | Otherwise, enable if value is not nil. */ | |
4332 | tem = Fget (def, Qmenu_enable); | |
4333 | if (!NILP (tem)) | |
047a8ea7 RS |
4334 | /* (condition-case nil (eval tem) |
4335 | (error nil)) */ | |
4336 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4337 | menu_bar_item_1); | |
5ec75a55 RS |
4338 | } |
4339 | ||
b7c49376 RS |
4340 | /* Ignore this item if it's not enabled. */ |
4341 | if (NILP (enabled)) | |
4342 | return; | |
5ec75a55 | 4343 | |
f5e09c8b | 4344 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4345 | for (i = 0; i < menu_bar_items_index; i += 3) |
4346 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4347 | break; | |
4348 | ||
f5e09c8b | 4349 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4350 | if (i == menu_bar_items_index) |
4351 | { | |
4352 | /* If vector is too small, get a bigger one. */ | |
4353 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4354 | { | |
4355 | Lisp_Object tem; | |
4356 | int newsize = 2 * i; | |
4357 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4358 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4359 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4360 | menu_bar_items_vector = tem; | |
4361 | } | |
4362 | /* Add this item. */ | |
4363 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4364 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4365 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4366 | menu_bar_items_index = i; |
4367 | } | |
f5e09c8b RS |
4368 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4369 | else | |
4370 | { | |
4371 | Lisp_Object old; | |
4372 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4373 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4374 | } | |
5ec75a55 RS |
4375 | } |
4376 | \f | |
dcc408a0 RS |
4377 | /* Read a character using menus based on maps in the array MAPS. |
4378 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4379 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4380 | |
4381 | PREV_EVENT is the previous input event, or nil if we are reading | |
4382 | the first event of a key sequence. | |
4383 | ||
6569cc8d JB |
4384 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4385 | if we used a mouse menu to read the input, or zero otherwise. If | |
4386 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4387 | |
4388 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4389 | and the strings associated with various map elements. |
4390 | ||
4391 | This can be done with X menus or with menus put in the minibuf. | |
4392 | These are done in different ways, depending on how the input will be read. | |
4393 | Menus using X are done after auto-saving in read-char, getting the input | |
4394 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4395 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4396 | |
7617111f | 4397 | static Lisp_Object |
8150596a | 4398 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4399 | int nmaps; |
4400 | Lisp_Object *maps; | |
4401 | Lisp_Object prev_event; | |
4402 | int *used_mouse_menu; | |
284f4730 | 4403 | { |
7d6de002 RS |
4404 | int mapno; |
4405 | register Lisp_Object name; | |
7d6de002 RS |
4406 | Lisp_Object rest, vector; |
4407 | ||
6569cc8d JB |
4408 | if (used_mouse_menu) |
4409 | *used_mouse_menu = 0; | |
284f4730 JB |
4410 | |
4411 | /* Use local over global Menu maps */ | |
4412 | ||
7d6de002 RS |
4413 | if (! menu_prompting) |
4414 | return Qnil; | |
4415 | ||
03361bcc RS |
4416 | /* Optionally disregard all but the global map. */ |
4417 | if (inhibit_local_menu_bar_menus) | |
4418 | { | |
4419 | maps += (nmaps - 1); | |
4420 | nmaps = 1; | |
4421 | } | |
4422 | ||
7d6de002 RS |
4423 | /* Get the menu name from the first map that has one (a prompt string). */ |
4424 | for (mapno = 0; mapno < nmaps; mapno++) | |
4425 | { | |
4426 | name = map_prompt (maps[mapno]); | |
4427 | if (!NILP (name)) | |
4428 | break; | |
4429 | } | |
284f4730 | 4430 | |
7d6de002 | 4431 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4432 | if (mapno >= nmaps) |
7d6de002 RS |
4433 | return Qnil; |
4434 | ||
87485d6f | 4435 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4436 | /* If we got to this point via a mouse click, |
4437 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4438 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4439 | { |
4440 | /* Display the menu and get the selection. */ | |
4441 | Lisp_Object *realmaps | |
4442 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4443 | Lisp_Object value; | |
4444 | int nmaps1 = 0; | |
4445 | ||
4446 | /* Use the maps that are not nil. */ | |
4447 | for (mapno = 0; mapno < nmaps; mapno++) | |
4448 | if (!NILP (maps[mapno])) | |
4449 | realmaps[nmaps1++] = maps[mapno]; | |
4450 | ||
4451 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4452 | if (CONSP (value)) |
4453 | { | |
4454 | /* If we got more than one event, put all but the first | |
4455 | onto this list to be read later. | |
4456 | Return just the first event now. */ | |
24597608 RS |
4457 | Vunread_command_events |
4458 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4459 | value = XCONS (value)->car; |
4460 | } | |
1c90c381 | 4461 | else if (NILP (value)) |
dcc408a0 | 4462 | value = Qt; |
6569cc8d JB |
4463 | if (used_mouse_menu) |
4464 | *used_mouse_menu = 1; | |
7d6de002 RS |
4465 | return value; |
4466 | } | |
87485d6f | 4467 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4468 | return Qnil ; |
4469 | } | |
4470 | ||
4471 | static Lisp_Object | |
24597608 | 4472 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4473 | int commandflag ; |
4474 | int nmaps; | |
4475 | Lisp_Object *maps; | |
4476 | { | |
4477 | int mapno; | |
4478 | register Lisp_Object name; | |
4479 | int nlength; | |
4480 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4481 | char *menu = (char *) alloca (width + 4); | |
4482 | int idx = -1; | |
9fdbfdf8 | 4483 | int nobindings = 1; |
8150596a RS |
4484 | Lisp_Object rest, vector; |
4485 | ||
4486 | if (! menu_prompting) | |
4487 | return Qnil; | |
4488 | ||
4489 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4490 | for (mapno = 0; mapno < nmaps; mapno++) | |
4491 | { | |
4492 | name = map_prompt (maps[mapno]); | |
4493 | if (!NILP (name)) | |
4494 | break; | |
4495 | } | |
4496 | ||
4497 | /* If we don't have any menus, just read a character normally. */ | |
4498 | if (mapno >= nmaps) | |
4499 | return Qnil; | |
284f4730 JB |
4500 | |
4501 | /* Prompt string always starts with map's prompt, and a space. */ | |
4502 | strcpy (menu, XSTRING (name)->data); | |
4503 | nlength = XSTRING (name)->size; | |
7d6de002 | 4504 | menu[nlength++] = ':'; |
284f4730 JB |
4505 | menu[nlength++] = ' '; |
4506 | menu[nlength] = 0; | |
4507 | ||
7d6de002 RS |
4508 | /* Start prompting at start of first map. */ |
4509 | mapno = 0; | |
4510 | rest = maps[mapno]; | |
284f4730 JB |
4511 | |
4512 | /* Present the documented bindings, a line at a time. */ | |
4513 | while (1) | |
4514 | { | |
4515 | int notfirst = 0; | |
4516 | int i = nlength; | |
4517 | Lisp_Object obj; | |
4518 | int ch; | |
8066f1a1 | 4519 | Lisp_Object orig_defn_macro; |
284f4730 | 4520 | |
284f4730 | 4521 | /* Loop over elements of map. */ |
7d6de002 | 4522 | while (i < width) |
284f4730 | 4523 | { |
7d6de002 | 4524 | Lisp_Object s, elt; |
284f4730 | 4525 | |
7d6de002 RS |
4526 | /* If reached end of map, start at beginning of next map. */ |
4527 | if (NILP (rest)) | |
4528 | { | |
4529 | mapno++; | |
4530 | /* At end of last map, wrap around to first map if just starting, | |
4531 | or end this line if already have something on it. */ | |
4532 | if (mapno == nmaps) | |
284f4730 | 4533 | { |
8150596a | 4534 | mapno = 0; |
40932d1a | 4535 | if (notfirst || nobindings) break; |
284f4730 | 4536 | } |
7d6de002 | 4537 | rest = maps[mapno]; |
284f4730 | 4538 | } |
7d6de002 RS |
4539 | |
4540 | /* Look at the next element of the map. */ | |
4541 | if (idx >= 0) | |
4542 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4543 | else |
7d6de002 RS |
4544 | elt = Fcar_safe (rest); |
4545 | ||
8c18cbfb | 4546 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4547 | { |
7d6de002 RS |
4548 | /* If we found a dense table in the keymap, |
4549 | advanced past it, but start scanning its contents. */ | |
4550 | rest = Fcdr_safe (rest); | |
4551 | vector = elt; | |
4552 | idx = 0; | |
284f4730 | 4553 | } |
7d6de002 RS |
4554 | else |
4555 | { | |
4556 | /* An ordinary element. */ | |
8150596a RS |
4557 | if ( idx < 0 ) |
4558 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4559 | else | |
4560 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4561 | if (!STRINGP (s)) |
7d6de002 RS |
4562 | /* Ignore the element if it has no prompt string. */ |
4563 | ; | |
4564 | /* If we have room for the prompt string, add it to this line. | |
4565 | If this is the first on the line, always add it. */ | |
8150596a | 4566 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4567 | || !notfirst) |
4568 | { | |
4569 | int thiswidth; | |
284f4730 | 4570 | |
7d6de002 RS |
4571 | /* Punctuate between strings. */ |
4572 | if (notfirst) | |
4573 | { | |
4574 | strcpy (menu + i, ", "); | |
4575 | i += 2; | |
4576 | } | |
4577 | notfirst = 1; | |
8150596a | 4578 | nobindings = 0 ; |
7d6de002 RS |
4579 | |
4580 | /* Add as much of string as fits. */ | |
4581 | thiswidth = XSTRING (s)->size; | |
4582 | if (thiswidth + i > width) | |
4583 | thiswidth = width - i; | |
4584 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4585 | i += thiswidth; | |
8150596a | 4586 | menu[i] = 0; |
7d6de002 RS |
4587 | } |
4588 | else | |
4589 | { | |
4590 | /* If this element does not fit, end the line now, | |
4591 | and save the element for the next line. */ | |
4592 | strcpy (menu + i, "..."); | |
4593 | break; | |
4594 | } | |
4595 | ||
4596 | /* Move past this element. */ | |
8150596a | 4597 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4598 | /* Handle reaching end of dense table. */ |
4599 | idx = -1; | |
4600 | if (idx >= 0) | |
4601 | idx++; | |
4602 | else | |
4603 | rest = Fcdr_safe (rest); | |
4604 | } | |
284f4730 JB |
4605 | } |
4606 | ||
4607 | /* Prompt with that and read response. */ | |
4608 | message1 (menu); | |
8150596a RS |
4609 | |
4610 | /* Make believe its not a keyboard macro in case the help char | |
4611 | is pressed. Help characters are not recorded because menu prompting | |
4612 | is not used on replay. | |
4613 | */ | |
8066f1a1 KH |
4614 | orig_defn_macro = current_perdisplay->defining_kbd_macro; |
4615 | current_perdisplay->defining_kbd_macro = Qnil; | |
3cb81011 KH |
4616 | do |
4617 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4618 | while (BUFFERP (obj)); |
8066f1a1 | 4619 | current_perdisplay->defining_kbd_macro = orig_defn_macro; |
284f4730 | 4620 | |
8c18cbfb | 4621 | if (!INTEGERP (obj)) |
284f4730 JB |
4622 | return obj; |
4623 | else | |
4624 | ch = XINT (obj); | |
4625 | ||
f4255cd1 | 4626 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4627 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4628 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a | 4629 | { |
8066f1a1 KH |
4630 | if (!NILP (current_perdisplay->defining_kbd_macro)) |
4631 | store_kbd_macro_char (obj); | |
8150596a RS |
4632 | return obj; |
4633 | } | |
4634 | /* Help char - go round again */ | |
284f4730 JB |
4635 | } |
4636 | } | |
284f4730 JB |
4637 | \f |
4638 | /* Reading key sequences. */ | |
4639 | ||
4640 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4641 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4642 | keymap, or nil otherwise. Return the index of the first keymap in | |
4643 | which KEY has any binding, or NMAPS if no map has a binding. | |
4644 | ||
4645 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4646 | followed by the corresponding non-meta character. Keymaps in | |
4647 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4648 | NEXT. | |
4649 | ||
88cb0656 JB |
4650 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4651 | unmodified. | |
4652 | ||
284f4730 JB |
4653 | NEXT may == CURRENT. */ |
4654 | ||
4655 | static int | |
4e50f26a | 4656 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4657 | Lisp_Object key; |
4658 | Lisp_Object *current, *defs, *next; | |
4659 | int nmaps; | |
4660 | { | |
4661 | int i, first_binding; | |
4662 | ||
4663 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4664 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4665 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4666 | { |
4667 | for (i = 0; i < nmaps; i++) | |
4668 | if (! NILP (current[i])) | |
4669 | { | |
cd21b839 | 4670 | next[i] = |
e74fbc70 | 4671 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4672 | |
4673 | /* Note that since we pass the resulting bindings through | |
4674 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4675 | disappear. */ | |
f4255cd1 | 4676 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4677 | } |
4678 | else | |
4679 | next[i] = Qnil; | |
4680 | ||
4681 | current = next; | |
18cd2eeb | 4682 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4683 | } |
4684 | ||
4685 | first_binding = nmaps; | |
4686 | for (i = nmaps - 1; i >= 0; i--) | |
4687 | { | |
4688 | if (! NILP (current[i])) | |
4689 | { | |
e74fbc70 | 4690 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4691 | if (! NILP (defs[i])) |
4692 | first_binding = i; | |
4693 | } | |
4694 | else | |
4695 | defs[i] = Qnil; | |
4696 | } | |
4697 | ||
284f4730 | 4698 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4699 | if (first_binding < nmaps) |
4700 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4701 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4702 | |
4703 | return first_binding; | |
4704 | } | |
4705 | ||
f4255cd1 JB |
4706 | /* Read a sequence of keys that ends with a non prefix character, |
4707 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4708 | Prompt with PROMPT. | |
284f4730 | 4709 | Return the length of the key sequence stored. |
dcc408a0 | 4710 | Return -1 if the user rejected a command menu. |
284f4730 | 4711 | |
f4255cd1 JB |
4712 | Echo starting immediately unless `prompt' is 0. |
4713 | ||
4714 | Where a key sequence ends depends on the currently active keymaps. | |
4715 | These include any minor mode keymaps active in the current buffer, | |
4716 | the current buffer's local map, and the global map. | |
4717 | ||
4718 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4719 | to see if some trailing subsequence might be the beginning of a | |
4720 | function key's sequence. If so, we try to read the whole function | |
4721 | key, and substitute its symbolic name into the key sequence. | |
4722 | ||
fbcd35bd JB |
4723 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4724 | `double-' events into similar click events, if that would make them | |
4725 | bound. We try to turn `triple-' events first into `double-' events, | |
4726 | then into clicks. | |
f4255cd1 JB |
4727 | |
4728 | If we get a mouse click in a mode line, vertical divider, or other | |
4729 | non-text area, we treat the click as if it were prefixed by the | |
4730 | symbol denoting that area - `mode-line', `vertical-line', or | |
4731 | whatever. | |
4732 | ||
4733 | If the sequence starts with a mouse click, we read the key sequence | |
4734 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4735 | |
f4255cd1 JB |
4736 | If the user switches frames in the midst of a key sequence, we put |
4737 | off the switch-frame event until later; the next call to | |
4738 | read_char will return it. */ | |
48e416d4 | 4739 | |
284f4730 | 4740 | static int |
ce98e608 KH |
4741 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last, |
4742 | can_return_switch_frame) | |
284f4730 JB |
4743 | Lisp_Object *keybuf; |
4744 | int bufsize; | |
84d91fda | 4745 | Lisp_Object prompt; |
309b0fc8 | 4746 | int dont_downcase_last; |
ce98e608 | 4747 | int can_return_switch_frame; |
284f4730 | 4748 | { |
f4255cd1 JB |
4749 | int count = specpdl_ptr - specpdl; |
4750 | ||
284f4730 JB |
4751 | /* How many keys there are in the current key sequence. */ |
4752 | int t; | |
4753 | ||
284f4730 JB |
4754 | /* The length of the echo buffer when we started reading, and |
4755 | the length of this_command_keys when we started reading. */ | |
4756 | int echo_start; | |
f4255cd1 | 4757 | int keys_start; |
284f4730 JB |
4758 | |
4759 | /* The number of keymaps we're scanning right now, and the number of | |
4760 | keymaps we have allocated space for. */ | |
4761 | int nmaps; | |
4762 | int nmaps_allocated = 0; | |
4763 | ||
284f4730 JB |
4764 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4765 | the current keymaps. */ | |
4766 | Lisp_Object *defs; | |
4767 | ||
f4255cd1 JB |
4768 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4769 | in the current keymaps, or nil where it is not a prefix. */ | |
4770 | Lisp_Object *submaps; | |
4771 | ||
e0dff5f6 RS |
4772 | /* The local map to start out with at start of key sequence. */ |
4773 | Lisp_Object orig_local_map; | |
4774 | ||
4775 | /* 1 if we have already considered switching to the local-map property | |
4776 | of the place where a mouse click occurred. */ | |
4777 | int localized_local_map = 0; | |
4778 | ||
f4255cd1 JB |
4779 | /* The index in defs[] of the first keymap that has a binding for |
4780 | this key sequence. In other words, the lowest i such that | |
4781 | defs[i] is non-nil. */ | |
284f4730 JB |
4782 | int first_binding; |
4783 | ||
f4255cd1 | 4784 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4785 | input key. |
4786 | ||
4787 | We use this to recover after recognizing a function key. Once we | |
4788 | realize that a suffix of the current key sequence is actually a | |
4789 | function key's escape sequence, we replace the suffix with the | |
4790 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4791 | contains a new and different key sequence, so the echo area, |
4792 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4793 | this situation, we set mock_input to t, set t to 0, and jump to | |
4794 | restart_sequence; the loop will read keys from keybuf up until | |
4795 | mock_input, thus rebuilding the state; and then it will resume | |
4796 | reading characters from the keyboard. */ | |
284f4730 JB |
4797 | int mock_input = 0; |
4798 | ||
253598e4 | 4799 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4800 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4801 | and fkey_map is its binding. | |
253598e4 | 4802 | |
f4255cd1 JB |
4803 | These might be > t, indicating that all function key scanning |
4804 | should hold off until t reaches them. We do this when we've just | |
4805 | recognized a function key, to avoid searching for the function | |
4806 | key's again in Vfunction_key_map. */ | |
284f4730 | 4807 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4808 | Lisp_Object fkey_map; |
284f4730 | 4809 | |
a612e298 RS |
4810 | /* Likewise, for key_translation_map. */ |
4811 | int keytran_start = 0, keytran_end = 0; | |
4812 | Lisp_Object keytran_map; | |
4813 | ||
cd21b839 JB |
4814 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4815 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4816 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4817 | |
51763820 BF |
4818 | /* See the comment below... */ |
4819 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4820 | Lisp_Object first_event; |
51763820 | 4821 | #endif |
4efda7dd | 4822 | |
309b0fc8 RS |
4823 | Lisp_Object original_uppercase; |
4824 | int original_uppercase_position = -1; | |
4825 | ||
bc536d84 | 4826 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 4827 | int dummyflag = 0; |
bc536d84 | 4828 | |
3b9189f8 RS |
4829 | struct buffer *starting_buffer; |
4830 | ||
e9bf89a0 RS |
4831 | /* Nonzero if we seem to have got the beginning of a binding |
4832 | in function_key_map. */ | |
4833 | int function_key_possible = 0; | |
00a78037 | 4834 | int key_translation_possible = 0; |
e9bf89a0 | 4835 | |
4efda7dd RS |
4836 | int junk; |
4837 | ||
4838 | last_nonmenu_event = Qnil; | |
4839 | ||
4840 | delayed_switch_frame = Qnil; | |
4841 | fkey_map = Vfunction_key_map; | |
a612e298 | 4842 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4843 | |
a612e298 | 4844 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4845 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4846 | fkey_start = fkey_end = bufsize + 1; | |
4847 | ||
a612e298 RS |
4848 | /* If there is no key-translation-map, turn off scanning. */ |
4849 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4850 | keytran_start = keytran_end = bufsize + 1; | |
4851 | ||
284f4730 JB |
4852 | if (INTERACTIVE) |
4853 | { | |
84d91fda RS |
4854 | if (!NILP (prompt)) |
4855 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4856 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4857 | /* This doesn't put in a dash if the echo buffer is empty, so |
4858 | you don't always see a dash hanging out in the minibuffer. */ | |
4859 | echo_dash (); | |
284f4730 JB |
4860 | } |
4861 | ||
f4255cd1 JB |
4862 | /* Record the initial state of the echo area and this_command_keys; |
4863 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4864 | if (INTERACTIVE) |
4c52b668 | 4865 | echo_start = (current_perdisplay ? echo_length () : 0); |
f4255cd1 | 4866 | keys_start = this_command_key_count; |
0a7f1fc0 | 4867 | |
51763820 BF |
4868 | #if defined (GOBBLE_FIRST_EVENT) |
4869 | /* This doesn't quite work, because some of the things that read_char | |
4870 | does cannot safely be bypassed. It seems too risky to try to make | |
4871 | this work right. */ | |
4872 | ||
4efda7dd RS |
4873 | /* Read the first char of the sequence specially, before setting |
4874 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4875 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4876 | &junk); |
51763820 | 4877 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4878 | |
e0dff5f6 RS |
4879 | orig_local_map = get_local_map (PT, current_buffer); |
4880 | ||
7b4aedb9 JB |
4881 | /* We jump here when the key sequence has been thoroughly changed, and |
4882 | we need to rescan it starting from the beginning. When we jump here, | |
4883 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4884 | replay_sequence: |
7b4aedb9 | 4885 | |
3b9189f8 | 4886 | starting_buffer = current_buffer; |
e9bf89a0 | 4887 | function_key_possible = 0; |
00a78037 | 4888 | key_translation_possible = 0; |
3b9189f8 | 4889 | |
f4255cd1 | 4890 | /* Build our list of keymaps. |
07d2b8de JB |
4891 | If we recognize a function key and replace its escape sequence in |
4892 | keybuf with its symbol, or if the sequence starts with a mouse | |
4893 | click and we need to switch buffers, we jump back here to rebuild | |
4894 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4895 | { |
4896 | Lisp_Object *maps; | |
4897 | ||
9dd3131c | 4898 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4899 | { |
9dd3131c RS |
4900 | nmaps = 2; |
4901 | if (nmaps > nmaps_allocated) | |
4902 | { | |
4903 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4904 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4905 | nmaps_allocated = nmaps; | |
4906 | } | |
4907 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4908 | } |
9dd3131c RS |
4909 | else |
4910 | { | |
4911 | nmaps = current_minor_maps (0, &maps) + 2; | |
4912 | if (nmaps > nmaps_allocated) | |
4913 | { | |
4914 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4915 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4916 | nmaps_allocated = nmaps; | |
4917 | } | |
4918 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4919 | #ifdef USE_TEXT_PROPERTIES |
e0dff5f6 | 4920 | submaps[nmaps-2] = orig_local_map; |
497ba7a1 | 4921 | #else |
9dd3131c | 4922 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4923 | #endif |
9dd3131c | 4924 | } |
7e6992e0 | 4925 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4926 | } |
4927 | ||
4928 | /* Find an accurate initial value for first_binding. */ | |
4929 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4930 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4931 | break; |
4932 | ||
3b9189f8 | 4933 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4934 | t = 0; |
4935 | ||
4936 | /* These are no-ops the first time through, but if we restart, they | |
4937 | revert the echo area and this_command_keys to their original state. */ | |
4938 | this_command_key_count = keys_start; | |
4c52b668 | 4939 | if (INTERACTIVE && t < mock_input && current_perdisplay) |
f4255cd1 JB |
4940 | echo_truncate (echo_start); |
4941 | ||
cca310da JB |
4942 | /* If the best binding for the current key sequence is a keymap, or |
4943 | we may be looking at a function key's escape sequence, keep on | |
4944 | reading. */ | |
253598e4 | 4945 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4946 | || (first_binding >= nmaps |
4947 | && fkey_start < t | |
4948 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 4949 | && mock_input <= fkey_start) |
0d882d52 KH |
4950 | || (first_binding >= nmaps |
4951 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
4952 | /* Don't return in the middle of a possible function key sequence, |
4953 | if the only bindings we found were via case conversion. | |
4954 | Thus, if ESC O a has a function-key-map translation | |
4955 | and ESC o has a binding, don't return after ESC O, | |
4956 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 4957 | ) |
284f4730 JB |
4958 | { |
4959 | Lisp_Object key; | |
7d6de002 | 4960 | int used_mouse_menu = 0; |
284f4730 | 4961 | |
7b4aedb9 JB |
4962 | /* Where the last real key started. If we need to throw away a |
4963 | key that has expanded into more than one element of keybuf | |
4964 | (say, a mouse click on the mode line which is being treated | |
4965 | as [mode-line (mouse-...)], then we backtrack to this point | |
4966 | of keybuf. */ | |
4967 | int last_real_key_start; | |
4968 | ||
0a7f1fc0 JB |
4969 | /* These variables are analogous to echo_start and keys_start; |
4970 | while those allow us to restart the entire key sequence, | |
4971 | echo_local_start and keys_local_start allow us to throw away | |
4972 | just one key. */ | |
f4255cd1 JB |
4973 | int echo_local_start, keys_local_start, local_first_binding; |
4974 | ||
284f4730 JB |
4975 | if (t >= bufsize) |
4976 | error ("key sequence too long"); | |
4977 | ||
f4255cd1 JB |
4978 | if (INTERACTIVE) |
4979 | echo_local_start = echo_length (); | |
4980 | keys_local_start = this_command_key_count; | |
4981 | local_first_binding = first_binding; | |
4982 | ||
4983 | replay_key: | |
0a7f1fc0 | 4984 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4985 | jumped back up to replay_key; in that case, these restore the |
4986 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4987 | loop. */ |
40932d1a | 4988 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4989 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4990 | this_command_key_count = keys_local_start; |
4991 | first_binding = local_first_binding; | |
4992 | ||
7e85b935 RS |
4993 | /* By default, assume each event is "real". */ |
4994 | last_real_key_start = t; | |
4995 | ||
f4255cd1 | 4996 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4997 | if (t < mock_input) |
4998 | { | |
4999 | key = keybuf[t]; | |
5000 | add_command_key (key); | |
a98ea3f9 RS |
5001 | if (echo_keystrokes) |
5002 | echo_char (key); | |
284f4730 | 5003 | } |
253598e4 JB |
5004 | |
5005 | /* If not, we should actually read a character. */ | |
284f4730 JB |
5006 | else |
5007 | { | |
a6d53864 RS |
5008 | struct buffer *buf = current_buffer; |
5009 | ||
beecf6a1 | 5010 | { |
bded54dd KH |
5011 | #ifdef MULTI_PERDISPLAY |
5012 | PERDISPLAY *interrupted_perdisplay = current_perdisplay; | |
beecf6a1 KH |
5013 | if (setjmp (wrong_display_jmpbuf)) |
5014 | { | |
5015 | while (t > 0) | |
5016 | interrupted_perdisplay->kbd_queue | |
5017 | = Fcons (keybuf[--t], interrupted_perdisplay->kbd_queue); | |
5018 | mock_input = 0; | |
a6e0153c | 5019 | orig_local_map = get_local_map (PT, current_buffer); |
beecf6a1 KH |
5020 | goto replay_sequence; |
5021 | } | |
bded54dd | 5022 | #endif |
beecf6a1 KH |
5023 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
5024 | &used_mouse_menu); | |
5025 | } | |
284f4730 | 5026 | |
dcc408a0 RS |
5027 | /* read_char returns t when it shows a menu and the user rejects it. |
5028 | Just return -1. */ | |
5029 | if (EQ (key, Qt)) | |
5030 | return -1; | |
5031 | ||
f4255cd1 | 5032 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
5033 | Emacs 18 handles this by returning immediately with a |
5034 | zero, so that's what we'll do. */ | |
8c18cbfb | 5035 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 5036 | { |
f4255cd1 | 5037 | t = 0; |
bc536d84 RS |
5038 | /* The Microsoft C compiler can't handle the goto that |
5039 | would go here. */ | |
309b0fc8 | 5040 | dummyflag = 1; |
bc536d84 | 5041 | break; |
cd21b839 | 5042 | } |
284f4730 | 5043 | |
3cb81011 KH |
5044 | /* If the current buffer has been changed from under us, the |
5045 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 5046 | if (BUFFERP (key)) |
3cb81011 KH |
5047 | { |
5048 | mock_input = t; | |
a6e0153c | 5049 | orig_local_map = get_local_map (PT, current_buffer); |
3cb81011 KH |
5050 | goto replay_sequence; |
5051 | } | |
5052 | ||
3b9189f8 RS |
5053 | /* If we have a quit that was typed in another frame, and |
5054 | quit_throw_to_read_char switched buffers, | |
5055 | replay to get the right keymap. */ | |
9343ab07 | 5056 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
5057 | { |
5058 | keybuf[t++] = key; | |
5059 | mock_input = t; | |
5060 | Vquit_flag = Qnil; | |
a6e0153c | 5061 | orig_local_map = get_local_map (PT, current_buffer); |
3b9189f8 RS |
5062 | goto replay_sequence; |
5063 | } | |
3cb81011 | 5064 | |
284f4730 | 5065 | Vquit_flag = Qnil; |
7e85b935 | 5066 | } |
284f4730 | 5067 | |
7e85b935 RS |
5068 | /* Clicks in non-text areas get prefixed by the symbol |
5069 | in their CHAR-ADDRESS field. For example, a click on | |
5070 | the mode line is prefixed by the symbol `mode-line'. | |
5071 | ||
5072 | Furthermore, key sequences beginning with mouse clicks | |
5073 | are read using the keymaps of the buffer clicked on, not | |
5074 | the current buffer. So we may have to switch the buffer | |
5075 | here. | |
5076 | ||
5077 | When we turn one event into two events, we must make sure | |
5078 | that neither of the two looks like the original--so that, | |
5079 | if we replay the events, they won't be expanded again. | |
5080 | If not for this, such reexpansion could happen either here | |
5081 | or when user programs play with this-command-keys. */ | |
5082 | if (EVENT_HAS_PARAMETERS (key)) | |
5083 | { | |
9b8eb840 | 5084 | Lisp_Object kind; |
cca310da | 5085 | |
9b8eb840 | 5086 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 5087 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 5088 | { |
9b8eb840 | 5089 | Lisp_Object window, posn; |
f4255cd1 | 5090 | |
9b8eb840 KH |
5091 | window = POSN_WINDOW (EVENT_START (key)); |
5092 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 5093 | if (CONSP (posn)) |
0a7f1fc0 | 5094 | { |
7e85b935 RS |
5095 | /* We're looking at the second event of a |
5096 | sequence which we expanded before. Set | |
5097 | last_real_key_start appropriately. */ | |
5098 | if (t > 0) | |
5099 | last_real_key_start = t - 1; | |
cd21b839 | 5100 | } |
7e85b935 RS |
5101 | |
5102 | /* Key sequences beginning with mouse clicks are | |
5103 | read using the keymaps in the buffer clicked on, | |
5104 | not the current buffer. If we're at the | |
5105 | beginning of a key sequence, switch buffers. */ | |
5106 | if (last_real_key_start == 0 | |
8c18cbfb KH |
5107 | && WINDOWP (window) |
5108 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 5109 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 5110 | { |
7e85b935 RS |
5111 | keybuf[t] = key; |
5112 | mock_input = t + 1; | |
5113 | ||
5114 | /* Arrange to go back to the original buffer once we're | |
5115 | done reading the key sequence. Note that we can't | |
5116 | use save_excursion_{save,restore} here, because they | |
5117 | save point as well as the current buffer; we don't | |
5118 | want to save point, because redisplay may change it, | |
5119 | to accommodate a Fset_window_start or something. We | |
5120 | don't want to do this at the top of the function, | |
5121 | because we may get input from a subprocess which | |
5122 | wants to change the selected window and stuff (say, | |
5123 | emacsclient). */ | |
5124 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
5125 | ||
5126 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 5127 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 5128 | goto replay_sequence; |
0a7f1fc0 | 5129 | } |
e0dff5f6 RS |
5130 | /* For a mouse click, get the local text-property keymap |
5131 | of the place clicked on, rather than point. */ | |
5132 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
5133 | && ! localized_local_map) | |
5ec75a55 | 5134 | { |
e0dff5f6 RS |
5135 | Lisp_Object map_here, start, pos; |
5136 | ||
5137 | localized_local_map = 1; | |
5138 | start = EVENT_START (key); | |
5139 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
5140 | { | |
5141 | pos = POSN_BUFFER_POSN (start); | |
5142 | if (INTEGERP (pos)) | |
5143 | { | |
5144 | map_here = get_local_map (XINT (pos), current_buffer); | |
5145 | if (!EQ (map_here, orig_local_map)) | |
5146 | { | |
5147 | orig_local_map = map_here; | |
5148 | keybuf[t] = key; | |
5149 | mock_input = t + 1; | |
5ec75a55 | 5150 | |
e0dff5f6 RS |
5151 | goto replay_sequence; |
5152 | } | |
5153 | } | |
5154 | } | |
5155 | } | |
5156 | ||
5157 | /* Expand mode-line and scroll-bar events into two events: | |
5158 | use posn as a fake prefix key. */ | |
5159 | if (SYMBOLP (posn)) | |
5160 | { | |
7e85b935 RS |
5161 | if (t + 1 >= bufsize) |
5162 | error ("key sequence too long"); | |
5163 | keybuf[t] = posn; | |
5164 | keybuf[t+1] = key; | |
5165 | mock_input = t + 2; | |
5166 | ||
5167 | /* Zap the position in key, so we know that we've | |
5168 | expanded it, and don't try to do so again. */ | |
5169 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5170 | = Fcons (posn, Qnil); | |
5171 | goto replay_key; | |
5ec75a55 | 5172 | } |
0a7f1fc0 | 5173 | } |
7e85b935 | 5174 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 5175 | { |
ce98e608 KH |
5176 | /* If we're at the beginning of a key sequence, and the caller |
5177 | says it's okay, go ahead and return this event. If we're | |
5178 | in the midst of a key sequence, delay it until the end. */ | |
5179 | if (t > 0 || !can_return_switch_frame) | |
7e85b935 RS |
5180 | { |
5181 | delayed_switch_frame = key; | |
5182 | goto replay_key; | |
5183 | } | |
5184 | } | |
7a80a6f6 RS |
5185 | else if (CONSP (XCONS (key)->cdr) |
5186 | && CONSP (EVENT_START (key)) | |
5187 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 5188 | { |
9b8eb840 | 5189 | Lisp_Object posn; |
7e85b935 | 5190 | |
9b8eb840 | 5191 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
5192 | /* Handle menu-bar events: |
5193 | insert the dummy prefix event `menu-bar'. */ | |
5194 | if (EQ (posn, Qmenu_bar)) | |
5195 | { | |
5196 | if (t + 1 >= bufsize) | |
5197 | error ("key sequence too long"); | |
5198 | /* Run the Lucid hook. */ | |
88ce066e RS |
5199 | if (!NILP (Vrun_hooks)) |
5200 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
5201 | /* If it has changed current-menubar from previous value, |
5202 | really recompute the menubar from the value. */ | |
5203 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
5204 | call0 (Qrecompute_lucid_menubar); | |
5205 | keybuf[t] = posn; | |
5206 | keybuf[t+1] = key; | |
5207 | ||
5208 | /* Zap the position in key, so we know that we've | |
5209 | expanded it, and don't try to do so again. */ | |
5210 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5211 | = Fcons (posn, Qnil); | |
5212 | ||
5213 | mock_input = t + 2; | |
5214 | goto replay_sequence; | |
5215 | } | |
8c18cbfb | 5216 | else if (CONSP (posn)) |
7e85b935 RS |
5217 | { |
5218 | /* We're looking at the second event of a | |
5219 | sequence which we expanded before. Set | |
5220 | last_real_key_start appropriately. */ | |
5221 | if (last_real_key_start == t && t > 0) | |
5222 | last_real_key_start = t - 1; | |
5223 | } | |
a6d53864 | 5224 | } |
284f4730 | 5225 | } |
f4255cd1 JB |
5226 | |
5227 | /* We have finally decided that KEY is something we might want | |
5228 | to look up. */ | |
284f4730 JB |
5229 | first_binding = (follow_key (key, |
5230 | nmaps - first_binding, | |
253598e4 | 5231 | submaps + first_binding, |
284f4730 | 5232 | defs + first_binding, |
4e50f26a | 5233 | submaps + first_binding) |
284f4730 | 5234 | + first_binding); |
0a7f1fc0 | 5235 | |
f4255cd1 | 5236 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
5237 | if (first_binding >= nmaps) |
5238 | { | |
9b8eb840 | 5239 | Lisp_Object head; |
0a7f1fc0 | 5240 | |
9b8eb840 | 5241 | head = EVENT_HEAD (key); |
7e85b935 RS |
5242 | if (EQ (head, Vhelp_char)) |
5243 | { | |
5244 | read_key_sequence_cmd = Vprefix_help_command; | |
5245 | keybuf[t++] = key; | |
5246 | last_nonmenu_event = key; | |
bc536d84 RS |
5247 | /* The Microsoft C compiler can't handle the goto that |
5248 | would go here. */ | |
309b0fc8 | 5249 | dummyflag = 1; |
0d882d52 | 5250 | break; |
7e85b935 RS |
5251 | } |
5252 | ||
8c18cbfb | 5253 | if (SYMBOLP (head)) |
0a7f1fc0 | 5254 | { |
9b8eb840 KH |
5255 | Lisp_Object breakdown; |
5256 | int modifiers; | |
0a7f1fc0 | 5257 | |
9b8eb840 KH |
5258 | breakdown = parse_modifiers (head); |
5259 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
5260 | /* Attempt to reduce an unbound mouse event to a simpler |
5261 | event that is bound: | |
5262 | Drags reduce to clicks. | |
5263 | Double-clicks reduce to clicks. | |
5264 | Triple-clicks reduce to double-clicks, then to clicks. | |
5265 | Down-clicks are eliminated. | |
5266 | Double-downs reduce to downs, then are eliminated. | |
5267 | Triple-downs reduce to double-downs, then to downs, | |
5268 | then are eliminated. */ | |
5269 | if (modifiers & (down_modifier | drag_modifier | |
5270 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 5271 | { |
559f9d04 RS |
5272 | while (modifiers & (down_modifier | drag_modifier |
5273 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
5274 | { |
5275 | Lisp_Object new_head, new_click; | |
5276 | if (modifiers & triple_modifier) | |
5277 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
5278 | else if (modifiers & double_modifier) |
5279 | modifiers &= ~double_modifier; | |
5280 | else if (modifiers & drag_modifier) | |
5281 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
5282 | else |
5283 | { | |
5284 | /* Dispose of this `down' event by simply jumping | |
5285 | back to replay_key, to get another event. | |
5286 | ||
5287 | Note that if this event came from mock input, | |
5288 | then just jumping back to replay_key will just | |
5289 | hand it to us again. So we have to wipe out any | |
5290 | mock input. | |
5291 | ||
5292 | We could delete keybuf[t] and shift everything | |
5293 | after that to the left by one spot, but we'd also | |
5294 | have to fix up any variable that points into | |
5295 | keybuf, and shifting isn't really necessary | |
5296 | anyway. | |
5297 | ||
5298 | Adding prefixes for non-textual mouse clicks | |
5299 | creates two characters of mock input, and both | |
5300 | must be thrown away. If we're only looking at | |
5301 | the prefix now, we can just jump back to | |
5302 | replay_key. On the other hand, if we've already | |
5303 | processed the prefix, and now the actual click | |
5304 | itself is giving us trouble, then we've lost the | |
5305 | state of the keymaps we want to backtrack to, and | |
5306 | we need to replay the whole sequence to rebuild | |
5307 | it. | |
5308 | ||
5309 | Beyond that, only function key expansion could | |
5310 | create more than two keys, but that should never | |
5311 | generate mouse events, so it's okay to zero | |
5312 | mock_input in that case too. | |
5313 | ||
5314 | Isn't this just the most wonderful code ever? */ | |
5315 | if (t == last_real_key_start) | |
5316 | { | |
5317 | mock_input = 0; | |
5318 | goto replay_key; | |
5319 | } | |
5320 | else | |
5321 | { | |
5322 | mock_input = last_real_key_start; | |
5323 | goto replay_sequence; | |
5324 | } | |
5325 | } | |
5326 | ||
27203ead RS |
5327 | new_head |
5328 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
5329 | new_click | |
5330 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5331 | |
5332 | /* Look for a binding for this new key. follow_key | |
5333 | promises that it didn't munge submaps the | |
5334 | last time we called it, since key was unbound. */ | |
27203ead RS |
5335 | first_binding |
5336 | = (follow_key (new_click, | |
5337 | nmaps - local_first_binding, | |
5338 | submaps + local_first_binding, | |
5339 | defs + local_first_binding, | |
4e50f26a | 5340 | submaps + local_first_binding) |
27203ead | 5341 | + local_first_binding); |
fbcd35bd JB |
5342 | |
5343 | /* If that click is bound, go for it. */ | |
5344 | if (first_binding < nmaps) | |
5345 | { | |
5346 | key = new_click; | |
5347 | break; | |
5348 | } | |
5349 | /* Otherwise, we'll leave key set to the drag event. */ | |
5350 | } | |
0a7f1fc0 JB |
5351 | } |
5352 | } | |
5353 | } | |
5354 | ||
284f4730 | 5355 | keybuf[t++] = key; |
7d6de002 RS |
5356 | /* Normally, last_nonmenu_event gets the previous key we read. |
5357 | But when a mouse popup menu is being used, | |
5358 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5359 | event that preceded the first level of menu. */ | |
5360 | if (!used_mouse_menu) | |
5361 | last_nonmenu_event = key; | |
284f4730 JB |
5362 | |
5363 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5364 | off the end of it. We only want to scan real keyboard input |
5365 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5366 | re-reading old events, don't examine it. */ |
4e50f26a | 5367 | if (first_binding >= nmaps |
253598e4 | 5368 | && t >= mock_input) |
284f4730 JB |
5369 | { |
5370 | Lisp_Object fkey_next; | |
5371 | ||
e9bf89a0 RS |
5372 | /* Continue scan from fkey_end until we find a bound suffix. |
5373 | If we fail, increment fkey_start | |
5374 | and start fkey_end from there. */ | |
284f4730 JB |
5375 | while (fkey_end < t) |
5376 | { | |
f4255cd1 JB |
5377 | Lisp_Object key; |
5378 | ||
5379 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5380 | /* Look up meta-characters by prefixing them |
5381 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5382 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5383 | { |
e74fbc70 RS |
5384 | fkey_next |
5385 | = get_keymap_1 | |
f4255cd1 | 5386 | (get_keyelt |
e74fbc70 | 5387 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5388 | 0, 1); |
bb9e9bed | 5389 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5390 | } |
067ffa38 JB |
5391 | else |
5392 | fkey_next = fkey_map; | |
5393 | ||
e74fbc70 RS |
5394 | fkey_next |
5395 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5396 | |
7a80a6f6 RS |
5397 | #if 0 /* I didn't turn this on, because it might cause trouble |
5398 | for the mapping of return into C-m and tab into C-i. */ | |
5399 | /* Optionally don't map function keys into other things. | |
5400 | This enables the user to redefine kp- keys easily. */ | |
5401 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5402 | fkey_next = Qnil; | |
5403 | #endif | |
5404 | ||
1abe6abe RS |
5405 | /* If the function key map gives a function, not an |
5406 | array, then call the function with no args and use | |
5407 | its value instead. */ | |
5408 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5409 | && fkey_end == t) | |
5410 | { | |
5411 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5412 | Lisp_Object tem; | |
5413 | tem = fkey_next; | |
5414 | ||
5415 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5416 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5417 | UNGCPRO; |
5418 | /* If the function returned something invalid, | |
5419 | barf--don't ignore it. | |
5420 | (To ignore it safely, we would need to gcpro a bunch of | |
5421 | other variables.) */ | |
5422 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5423 | error ("Function in function-key-map returns invalid key sequence"); | |
5424 | } | |
5425 | ||
e9bf89a0 RS |
5426 | function_key_possible = ! NILP (fkey_next); |
5427 | ||
85bc5181 | 5428 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5429 | function key map and it's a suffix of the current |
85bc5181 | 5430 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5431 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5432 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5433 | && fkey_end == t) |
5434 | { | |
2e864a76 | 5435 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5436 | |
5437 | t = fkey_start + len; | |
284f4730 JB |
5438 | if (t >= bufsize) |
5439 | error ("key sequence too long"); | |
5440 | ||
f5ea6163 JB |
5441 | if (VECTORP (fkey_next)) |
5442 | bcopy (XVECTOR (fkey_next)->contents, | |
5443 | keybuf + fkey_start, | |
5444 | (t - fkey_start) * sizeof (keybuf[0])); | |
5445 | else if (STRINGP (fkey_next)) | |
5446 | { | |
5447 | int i; | |
5448 | ||
5449 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5450 | XSETFASTINT (keybuf[fkey_start + i], |
5451 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5452 | } |
284f4730 JB |
5453 | |
5454 | mock_input = t; | |
5455 | fkey_start = fkey_end = t; | |
32e6d806 | 5456 | fkey_map = Vfunction_key_map; |
284f4730 | 5457 | |
00a78037 RS |
5458 | /* Do pass the results through key-translation-map. */ |
5459 | keytran_start = keytran_end = 0; | |
5460 | keytran_map = Vkey_translation_map; | |
5461 | ||
f4255cd1 | 5462 | goto replay_sequence; |
284f4730 JB |
5463 | } |
5464 | ||
f4255cd1 | 5465 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5466 | |
a764a753 JB |
5467 | /* If we no longer have a bound suffix, try a new positions for |
5468 | fkey_start. */ | |
284f4730 JB |
5469 | if (NILP (fkey_map)) |
5470 | { | |
5471 | fkey_end = ++fkey_start; | |
5472 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5473 | function_key_possible = 0; |
284f4730 JB |
5474 | } |
5475 | } | |
5476 | } | |
a612e298 RS |
5477 | |
5478 | /* Look for this sequence in key-translation-map. */ | |
5479 | { | |
5480 | Lisp_Object keytran_next; | |
5481 | ||
5482 | /* Scan from keytran_end until we find a bound suffix. */ | |
5483 | while (keytran_end < t) | |
5484 | { | |
5485 | Lisp_Object key; | |
5486 | ||
5487 | key = keybuf[keytran_end++]; | |
5488 | /* Look up meta-characters by prefixing them | |
5489 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5490 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5491 | { |
5492 | keytran_next | |
5493 | = get_keymap_1 | |
5494 | (get_keyelt | |
5495 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5496 | 0, 1); | |
bb9e9bed | 5497 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5498 | } |
5499 | else | |
5500 | keytran_next = keytran_map; | |
5501 | ||
5502 | keytran_next | |
5503 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5504 | ||
1abe6abe RS |
5505 | /* If the key translation map gives a function, not an |
5506 | array, then call the function with no args and use | |
5507 | its value instead. */ | |
5508 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5509 | && keytran_end == t) | |
5510 | { | |
5511 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5512 | Lisp_Object tem; | |
5513 | tem = keytran_next; | |
5514 | ||
40932d1a | 5515 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5516 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5517 | UNGCPRO; |
5518 | /* If the function returned something invalid, | |
5519 | barf--don't ignore it. | |
5520 | (To ignore it safely, we would need to gcpro a bunch of | |
5521 | other variables.) */ | |
5522 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5523 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5524 | } |
5525 | ||
00a78037 RS |
5526 | key_translation_possible = ! NILP (keytran_next); |
5527 | ||
a612e298 | 5528 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5529 | key translation map and it's a suffix of the current |
a612e298 RS |
5530 | sequence (i.e. keytran_end == t), replace it with |
5531 | the binding and restart with keytran_start at the end. */ | |
5532 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5533 | && keytran_end == t) | |
5534 | { | |
2e864a76 | 5535 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5536 | |
5537 | t = keytran_start + len; | |
5538 | if (t >= bufsize) | |
5539 | error ("key sequence too long"); | |
5540 | ||
5541 | if (VECTORP (keytran_next)) | |
5542 | bcopy (XVECTOR (keytran_next)->contents, | |
5543 | keybuf + keytran_start, | |
5544 | (t - keytran_start) * sizeof (keybuf[0])); | |
5545 | else if (STRINGP (keytran_next)) | |
5546 | { | |
5547 | int i; | |
5548 | ||
5549 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5550 | XSETFASTINT (keybuf[keytran_start + i], |
5551 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5552 | } |
5553 | ||
5554 | mock_input = t; | |
5555 | keytran_start = keytran_end = t; | |
5556 | keytran_map = Vkey_translation_map; | |
5557 | ||
00a78037 RS |
5558 | /* Don't pass the results of key-translation-map |
5559 | through function-key-map. */ | |
5560 | fkey_start = fkey_end = t; | |
5561 | fkey_map = Vkey_translation_map; | |
5562 | ||
a612e298 RS |
5563 | goto replay_sequence; |
5564 | } | |
5565 | ||
5566 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5567 | ||
5568 | /* If we no longer have a bound suffix, try a new positions for | |
5569 | keytran_start. */ | |
5570 | if (NILP (keytran_map)) | |
5571 | { | |
5572 | keytran_end = ++keytran_start; | |
5573 | keytran_map = Vkey_translation_map; | |
00a78037 | 5574 | key_translation_possible = 0; |
a612e298 RS |
5575 | } |
5576 | } | |
5577 | } | |
4e50f26a RS |
5578 | |
5579 | /* If KEY is not defined in any of the keymaps, | |
5580 | and cannot be part of a function key or translation, | |
5581 | and is an upper case letter | |
5582 | use the corresponding lower-case letter instead. */ | |
5583 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5584 | && ! key_translation_possible |
8c18cbfb | 5585 | && INTEGERP (key) |
4e50f26a RS |
5586 | && ((((XINT (key) & 0x3ffff) |
5587 | < XSTRING (current_buffer->downcase_table)->size) | |
5588 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5589 | || (XINT (key) & shift_modifier))) | |
5590 | { | |
309b0fc8 RS |
5591 | original_uppercase = key; |
5592 | original_uppercase_position = t - 1; | |
5593 | ||
4e50f26a RS |
5594 | if (XINT (key) & shift_modifier) |
5595 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5596 | else | |
5597 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5598 | | (XINT (key) & ~0x3ffff))); | |
5599 | ||
5600 | keybuf[t - 1] = key; | |
5601 | mock_input = t; | |
5602 | goto replay_sequence; | |
5603 | } | |
ef8fd672 RS |
5604 | /* If KEY is not defined in any of the keymaps, |
5605 | and cannot be part of a function key or translation, | |
5606 | and is a shifted function key, | |
5607 | use the corresponding unshifted function key instead. */ | |
5608 | if (first_binding == nmaps && ! function_key_possible | |
5609 | && ! key_translation_possible | |
5610 | && SYMBOLP (key)) | |
5611 | { | |
5612 | Lisp_Object breakdown; | |
5613 | int modifiers; | |
5614 | ||
309b0fc8 RS |
5615 | original_uppercase = key; |
5616 | original_uppercase_position = t - 1; | |
5617 | ||
ef8fd672 RS |
5618 | breakdown = parse_modifiers (key); |
5619 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
5620 | if (modifiers & shift_modifier) | |
5621 | { | |
5622 | modifiers &= ~shift_modifier; | |
5623 | key = apply_modifiers (make_number (modifiers), | |
5624 | XCONS (breakdown)->car); | |
5625 | ||
5626 | keybuf[t - 1] = key; | |
5627 | mock_input = t; | |
5628 | goto replay_sequence; | |
5629 | } | |
5630 | } | |
284f4730 JB |
5631 | } |
5632 | ||
309b0fc8 | 5633 | if (!dummyflag) |
bc536d84 RS |
5634 | read_key_sequence_cmd = (first_binding < nmaps |
5635 | ? defs[first_binding] | |
5636 | : Qnil); | |
284f4730 | 5637 | |
cd21b839 | 5638 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5639 | unbind_to (count, Qnil); |
07f76a14 | 5640 | |
309b0fc8 RS |
5641 | if (dont_downcase_last && t - 1 == original_uppercase_position) |
5642 | keybuf[t - 1] = original_uppercase; | |
5643 | ||
07f76a14 JB |
5644 | /* Occasionally we fabricate events, perhaps by expanding something |
5645 | according to function-key-map, or by adding a prefix symbol to a | |
5646 | mouse click in the scroll bar or modeline. In this cases, return | |
5647 | the entire generated key sequence, even if we hit an unbound | |
5648 | prefix or a definition before the end. This means that you will | |
5649 | be able to push back the event properly, and also means that | |
5650 | read-key-sequence will always return a logical unit. | |
5651 | ||
5652 | Better ideas? */ | |
cca310da JB |
5653 | for (; t < mock_input; t++) |
5654 | { | |
a98ea3f9 RS |
5655 | if (echo_keystrokes) |
5656 | echo_char (keybuf[t]); | |
cca310da JB |
5657 | add_command_key (keybuf[t]); |
5658 | } | |
07f76a14 | 5659 | |
284f4730 JB |
5660 | return t; |
5661 | } | |
5662 | ||
a612e298 RS |
5663 | #if 0 /* This doc string is too long for some compilers. |
5664 | This commented-out definition serves for DOC. */ | |
ce98e608 | 5665 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
284f4730 JB |
5666 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5667 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5668 | current local and global maps.\n\ | |
5669 | \n\ | |
c0a58692 RS |
5670 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5671 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5672 | as a continuation of the previous key.\n\ | |
284f4730 | 5673 | \n\ |
309b0fc8 RS |
5674 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
5675 | convert the last event to lower case. (Normally any upper case event\n\ | |
5676 | is converted to lower case if the original event is undefined and the lower\n\ | |
5677 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
5678 | a key sequence to be defined.\n\ | |
5679 | \n\ | |
cb5df6ae JB |
5680 | A C-g typed while in this function is treated like any other character,\n\ |
5681 | and `quit-flag' is not set.\n\ | |
5682 | \n\ | |
5683 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5684 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5685 | of the selected window as normal.\n\ | |
ede41463 | 5686 | ""\n\ |
cb5df6ae JB |
5687 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5688 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5689 | or multi-click event is unbound, but the corresponding click event would\n\ |
5690 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5691 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5692 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5693 | \n\ |
5694 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5695 | lines separating windows, and scroll bars with imaginary keys\n\ |
5696 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae | 5697 | \n\ |
ce98e608 KH |
5698 | Optional fourth argument CAN-RETURN-SWITCH-FRAME non-nil means that this\n\ |
5699 | function will process a switch-frame event if the user switches frames\n\ | |
5700 | before typing anything. If the user switches frames in the middle of a\n\ | |
5701 | key sequence, or at the start of the sequence but CAN-RETURN-SWITCH-FRAME\n\ | |
5702 | is nil, then the event will be put off until after the current key sequence.\n\ | |
cb5df6ae JB |
5703 | \n\ |
5704 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5705 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5706 | `function-key-map' for more details.") |
a612e298 RS |
5707 | (prompt, continue_echo) |
5708 | #endif | |
5709 | ||
ce98e608 | 5710 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 4, 0, |
a612e298 | 5711 | 0) |
ce98e608 | 5712 | (prompt, continue_echo, dont_downcase_last, can_return_switch_frame) |
309b0fc8 | 5713 | Lisp_Object prompt, continue_echo, dont_downcase_last; |
ce98e608 | 5714 | Lisp_Object can_return_switch_frame; |
284f4730 JB |
5715 | { |
5716 | Lisp_Object keybuf[30]; | |
5717 | register int i; | |
5718 | struct gcpro gcpro1, gcpro2; | |
5719 | ||
5720 | if (!NILP (prompt)) | |
5721 | CHECK_STRING (prompt, 0); | |
5722 | QUIT; | |
5723 | ||
5724 | bzero (keybuf, sizeof keybuf); | |
5725 | GCPRO1 (keybuf[0]); | |
5726 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5727 | ||
daa37602 | 5728 | if (NILP (continue_echo)) |
c0a58692 RS |
5729 | this_command_key_count = 0; |
5730 | ||
309b0fc8 | 5731 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
ce98e608 KH |
5732 | prompt, ! NILP (dont_downcase_last), |
5733 | ! NILP (can_return_switch_frame)); | |
284f4730 | 5734 | |
dcc408a0 RS |
5735 | if (i == -1) |
5736 | { | |
5737 | Vquit_flag = Qt; | |
5738 | QUIT; | |
5739 | } | |
284f4730 | 5740 | UNGCPRO; |
86e5706b | 5741 | return make_event_array (i, keybuf); |
284f4730 JB |
5742 | } |
5743 | \f | |
5744 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5745 | "Execute CMD as an editor command.\n\ | |
5746 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5747 | Optional second arg RECORD-FLAG non-nil\n\ | |
5748 | means unconditionally put this command in `command-history'.\n\ | |
5749 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5750 | (cmd, record) | |
5751 | Lisp_Object cmd, record; | |
5752 | { | |
5753 | register Lisp_Object final; | |
5754 | register Lisp_Object tem; | |
5755 | Lisp_Object prefixarg; | |
5756 | struct backtrace backtrace; | |
5757 | extern int debug_on_next_call; | |
5758 | ||
4c52b668 KH |
5759 | prefixarg = Vprefix_arg; |
5760 | clear_prefix_arg (); | |
5761 | Vcurrent_prefix_arg = prefixarg; | |
284f4730 JB |
5762 | debug_on_next_call = 0; |
5763 | ||
8c18cbfb | 5764 | if (SYMBOLP (cmd)) |
284f4730 JB |
5765 | { |
5766 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5767 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5768 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5769 | } |
5770 | ||
5771 | while (1) | |
5772 | { | |
ffd56f97 | 5773 | final = Findirect_function (cmd); |
284f4730 JB |
5774 | |
5775 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5776 | do_autoload (final, cmd); | |
5777 | else | |
5778 | break; | |
5779 | } | |
5780 | ||
8c18cbfb | 5781 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
5782 | { |
5783 | /* If requested, place the macro in the command history. For | |
5784 | other sorts of commands, call-interactively takes care of | |
5785 | this. */ | |
5786 | if (!NILP (record)) | |
5787 | Vcommand_history | |
5788 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5789 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5790 | Vcommand_history); | |
5791 | ||
5792 | return Fexecute_kbd_macro (final, prefixarg); | |
5793 | } | |
8c18cbfb | 5794 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
5795 | { |
5796 | backtrace.next = backtrace_list; | |
5797 | backtrace_list = &backtrace; | |
5798 | backtrace.function = &Qcall_interactively; | |
5799 | backtrace.args = &cmd; | |
5800 | backtrace.nargs = 1; | |
5801 | backtrace.evalargs = 0; | |
5802 | ||
5803 | tem = Fcall_interactively (cmd, record); | |
5804 | ||
5805 | backtrace_list = backtrace.next; | |
5806 | return tem; | |
5807 | } | |
5808 | return Qnil; | |
5809 | } | |
5810 | \f | |
284f4730 JB |
5811 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5812 | 1, 1, "P", | |
5813 | "Read function name, then read its arguments and call it.") | |
5814 | (prefixarg) | |
5815 | Lisp_Object prefixarg; | |
5816 | { | |
5817 | Lisp_Object function; | |
5818 | char buf[40]; | |
5819 | Lisp_Object saved_keys; | |
5820 | struct gcpro gcpro1; | |
5821 | ||
b0f2a7bf KH |
5822 | saved_keys = Fvector (this_command_key_count, |
5823 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5824 | buf[0] = 0; |
5825 | GCPRO1 (saved_keys); | |
5826 | ||
5827 | if (EQ (prefixarg, Qminus)) | |
5828 | strcpy (buf, "- "); | |
5829 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5830 | strcpy (buf, "C-u "); | |
8c18cbfb | 5831 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
284f4730 | 5832 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); |
8c18cbfb | 5833 | else if (INTEGERP (prefixarg)) |
284f4730 JB |
5834 | sprintf (buf, "%d ", XINT (prefixarg)); |
5835 | ||
5836 | /* This isn't strictly correct if execute-extended-command | |
5837 | is bound to anything else. Perhaps it should use | |
5838 | this_command_keys? */ | |
5839 | strcat (buf, "M-x "); | |
5840 | ||
5841 | /* Prompt with buf, and then read a string, completing from and | |
5842 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5843 | any initial input. Save the command read on the extended-command |
03b4122a | 5844 | history list. */ |
284f4730 JB |
5845 | function = Fcompleting_read (build_string (buf), |
5846 | Vobarray, Qcommandp, | |
03b4122a | 5847 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5848 | |
1113d9db JB |
5849 | /* Set this_command_keys to the concatenation of saved_keys and |
5850 | function, followed by a RET. */ | |
284f4730 | 5851 | { |
1113d9db | 5852 | struct Lisp_String *str; |
b0f2a7bf | 5853 | Lisp_Object *keys; |
284f4730 JB |
5854 | int i; |
5855 | Lisp_Object tem; | |
5856 | ||
1113d9db JB |
5857 | this_command_key_count = 0; |
5858 | ||
b0f2a7bf KH |
5859 | keys = XVECTOR (saved_keys)->contents; |
5860 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5861 | add_command_key (keys[i]); | |
1113d9db JB |
5862 | |
5863 | str = XSTRING (function); | |
5864 | for (i = 0; i < str->size; i++) | |
5865 | { | |
bb9e9bed | 5866 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
5867 | add_command_key (tem); |
5868 | } | |
5869 | ||
bb9e9bed | 5870 | XSETFASTINT (tem, '\015'); |
1113d9db | 5871 | add_command_key (tem); |
284f4730 JB |
5872 | } |
5873 | ||
5874 | UNGCPRO; | |
5875 | ||
0a7f1fc0 | 5876 | function = Fintern (function, Qnil); |
4c52b668 | 5877 | Vprefix_arg = prefixarg; |
284f4730 JB |
5878 | this_command = function; |
5879 | ||
5880 | return Fcommand_execute (function, Qt); | |
5881 | } | |
5882 | \f | |
5883 | ||
5884 | detect_input_pending () | |
5885 | { | |
5886 | if (!input_pending) | |
5887 | get_input_pending (&input_pending); | |
5888 | ||
5889 | return input_pending; | |
5890 | } | |
5891 | ||
ffd56f97 JB |
5892 | /* This is called in some cases before a possible quit. |
5893 | It cases the next call to detect_input_pending to recompute input_pending. | |
5894 | So calling this function unnecessarily can't do any harm. */ | |
5895 | clear_input_pending () | |
5896 | { | |
5897 | input_pending = 0; | |
5898 | } | |
5899 | ||
284f4730 JB |
5900 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5901 | "T if command input is currently available with no waiting.\n\ | |
5902 | Actually, the value is nil only if we can be sure that no input is available.") | |
5903 | () | |
5904 | { | |
24597608 | 5905 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5906 | return (Qt); |
5907 | ||
5908 | return detect_input_pending () ? Qt : Qnil; | |
5909 | } | |
5910 | ||
5911 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5912 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5913 | () |
5914 | { | |
5160df46 | 5915 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5916 | Lisp_Object val; |
5917 | ||
5918 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5919 | return Fvector (total_keys, keys); |
284f4730 JB |
5920 | else |
5921 | { | |
5160df46 JB |
5922 | val = Fvector (NUM_RECENT_KEYS, keys); |
5923 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5924 | XVECTOR (val)->contents, |
5925 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5926 | bcopy (keys, |
284f4730 JB |
5927 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5928 | recent_keys_index * sizeof (Lisp_Object)); | |
5929 | return val; | |
5930 | } | |
5931 | } | |
5932 | ||
5933 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5934 | "Return the key sequence that invoked this command.\n\ |
5935 | The value is a string or a vector.") | |
284f4730 JB |
5936 | () |
5937 | { | |
86e5706b RS |
5938 | return make_event_array (this_command_key_count, |
5939 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5940 | } |
5941 | ||
5942 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5943 | "Return the current depth in recursive edits.") | |
5944 | () | |
5945 | { | |
5946 | Lisp_Object temp; | |
bb9e9bed | 5947 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
5948 | return temp; |
5949 | } | |
5950 | ||
5951 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5952 | "FOpen dribble file: ", | |
9b2471df RS |
5953 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5954 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5955 | (file) |
5956 | Lisp_Object file; | |
5957 | { | |
5958 | if (NILP (file)) | |
5959 | { | |
d0011c11 RS |
5960 | if (dribble) |
5961 | { | |
5962 | fclose (dribble); | |
5963 | dribble = 0; | |
5964 | } | |
284f4730 JB |
5965 | } |
5966 | else | |
5967 | { | |
5968 | file = Fexpand_file_name (file, Qnil); | |
5969 | dribble = fopen (XSTRING (file)->data, "w"); | |
5970 | } | |
5971 | return Qnil; | |
5972 | } | |
5973 | ||
5974 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5975 | "Discard the contents of the terminal input buffer.\n\ | |
5976 | Also cancel any kbd macro being defined.") | |
5977 | () | |
5978 | { | |
8066f1a1 | 5979 | current_perdisplay->defining_kbd_macro = Qnil; |
284f4730 JB |
5980 | update_mode_lines++; |
5981 | ||
24597608 | 5982 | Vunread_command_events = Qnil; |
86e5706b | 5983 | unread_command_char = -1; |
284f4730 JB |
5984 | |
5985 | discard_tty_input (); | |
5986 | ||
ff0b5f4c JB |
5987 | /* Without the cast, GCC complains that this assignment loses the |
5988 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5989 | with that? */ | |
beecf6a1 KH |
5990 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
5991 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
5992 | input_pending = 0; |
5993 | ||
5994 | return Qnil; | |
5995 | } | |
5996 | \f | |
5997 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5998 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5999 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
6000 | control, run a subshell instead.\n\n\ | |
284f4730 | 6001 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
6002 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
6003 | \n\ | |
bbdc2092 RS |
6004 | Before suspending, run the normal hook `suspend-hook'.\n\ |
6005 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
6006 | \n\ |
6007 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 6008 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
6009 | (stuffstring) |
6010 | Lisp_Object stuffstring; | |
6011 | { | |
3a69360c | 6012 | Lisp_Object tem; |
284f4730 JB |
6013 | int count = specpdl_ptr - specpdl; |
6014 | int old_height, old_width; | |
6015 | int width, height; | |
b7d2ebbf | 6016 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
6017 | extern init_sys_modes (); |
6018 | ||
6019 | if (!NILP (stuffstring)) | |
6020 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 6021 | |
1e95ed28 JB |
6022 | /* Run the functions in suspend-hook. */ |
6023 | if (!NILP (Vrun_hooks)) | |
6024 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 6025 | |
b7d2ebbf | 6026 | GCPRO1 (stuffstring); |
ff11dfa1 | 6027 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
6028 | reset_sys_modes (); |
6029 | /* sys_suspend can get an error if it tries to fork a subshell | |
6030 | and the system resources aren't available for that. */ | |
6031 | record_unwind_protect (init_sys_modes, 0); | |
6032 | stuff_buffered_input (stuffstring); | |
8026024c KH |
6033 | if (cannot_suspend) |
6034 | sys_subshell (); | |
6035 | else | |
6036 | sys_suspend (); | |
284f4730 JB |
6037 | unbind_to (count, Qnil); |
6038 | ||
6039 | /* Check if terminal/window size has changed. | |
6040 | Note that this is not useful when we are running directly | |
6041 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 6042 | get_frame_size (&width, &height); |
284f4730 | 6043 | if (width != old_width || height != old_height) |
f5ea6163 | 6044 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 6045 | |
1e95ed28 | 6046 | /* Run suspend-resume-hook. */ |
284f4730 JB |
6047 | if (!NILP (Vrun_hooks)) |
6048 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
6049 | ||
6050 | UNGCPRO; | |
6051 | return Qnil; | |
6052 | } | |
6053 | ||
6054 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 6055 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
6056 | |
6057 | stuff_buffered_input (stuffstring) | |
6058 | Lisp_Object stuffstring; | |
6059 | { | |
284f4730 JB |
6060 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
6061 | #ifdef BSD | |
6062 | #ifndef BSD4_1 | |
612b78ef | 6063 | register unsigned char *p; |
612b78ef | 6064 | |
8c18cbfb | 6065 | if (STRINGP (stuffstring)) |
284f4730 JB |
6066 | { |
6067 | register int count; | |
6068 | ||
6069 | p = XSTRING (stuffstring)->data; | |
6070 | count = XSTRING (stuffstring)->size; | |
6071 | while (count-- > 0) | |
6072 | stuff_char (*p++); | |
6073 | stuff_char ('\n'); | |
6074 | } | |
6075 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 KH |
6076 | /* ?? What should this do when we have multiple keyboards?? |
6077 | Should we ignore anything that was typed in at the "wrong" display? */ | |
6078 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) | |
284f4730 | 6079 | { |
beecf6a1 KH |
6080 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
6081 | kbd_fetch_ptr = kbd_buffer; | |
6082 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
6083 | stuff_char (kbd_fetch_ptr->code); | |
6084 | kbd_fetch_ptr->kind = no_event; | |
6085 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
6086 | - kbd_buffer] | |
7b4aedb9 | 6087 | = Qnil); |
284f4730 JB |
6088 | } |
6089 | input_pending = 0; | |
6090 | #endif | |
6091 | #endif /* BSD and not BSD4_1 */ | |
6092 | } | |
6093 | \f | |
ffd56f97 JB |
6094 | set_waiting_for_input (time_to_clear) |
6095 | EMACS_TIME *time_to_clear; | |
284f4730 | 6096 | { |
ffd56f97 | 6097 | input_available_clear_time = time_to_clear; |
284f4730 JB |
6098 | |
6099 | /* Tell interrupt_signal to throw back to read_char, */ | |
6100 | waiting_for_input = 1; | |
6101 | ||
6102 | /* If interrupt_signal was called before and buffered a C-g, | |
6103 | make it run again now, to avoid timing error. */ | |
6104 | if (!NILP (Vquit_flag)) | |
6105 | quit_throw_to_read_char (); | |
284f4730 JB |
6106 | } |
6107 | ||
6108 | clear_waiting_for_input () | |
6109 | { | |
6110 | /* Tell interrupt_signal not to throw back to read_char, */ | |
6111 | waiting_for_input = 0; | |
ffd56f97 | 6112 | input_available_clear_time = 0; |
284f4730 JB |
6113 | } |
6114 | ||
6115 | /* This routine is called at interrupt level in response to C-G. | |
6116 | If interrupt_input, this is the handler for SIGINT. | |
6117 | Otherwise, it is called from kbd_buffer_store_event, | |
6118 | in handling SIGIO or SIGTINT. | |
6119 | ||
6120 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
6121 | immediately throw back to read_char. | |
6122 | ||
6123 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
6124 | This causes eval to throw, when it gets a chance. | |
6125 | If quit-flag is already non-nil, it stops the job right away. */ | |
6126 | ||
6127 | SIGTYPE | |
91c049d4 RS |
6128 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
6129 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
6130 | { |
6131 | char c; | |
6132 | /* Must preserve main program's value of errno. */ | |
6133 | int old_errno = errno; | |
284f4730 JB |
6134 | |
6135 | #ifdef USG | |
7a80a6f6 RS |
6136 | if (!read_socket_hook && NILP (Vwindow_system)) |
6137 | { | |
6138 | /* USG systems forget handlers when they are used; | |
6139 | must reestablish each time */ | |
6140 | signal (SIGINT, interrupt_signal); | |
6141 | signal (SIGQUIT, interrupt_signal); | |
6142 | } | |
284f4730 JB |
6143 | #endif /* USG */ |
6144 | ||
6145 | cancel_echoing (); | |
6146 | ||
d5045cf9 | 6147 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
6148 | { |
6149 | fflush (stdout); | |
6150 | reset_sys_modes (); | |
6151 | sigfree (); | |
6152 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
6153 | /* | |
6154 | * On systems which can suspend the current process and return to the original | |
6155 | * shell, this command causes the user to end up back at the shell. | |
6156 | * The "Auto-save" and "Abort" questions are not asked until | |
6157 | * the user elects to return to emacs, at which point he can save the current | |
6158 | * job and either dump core or continue. | |
6159 | */ | |
6160 | sys_suspend (); | |
6161 | #else | |
6162 | #ifdef VMS | |
6163 | if (sys_suspend () == -1) | |
6164 | { | |
6165 | printf ("Not running as a subprocess;\n"); | |
6166 | printf ("you can continue or abort.\n"); | |
6167 | } | |
6168 | #else /* not VMS */ | |
6169 | /* Perhaps should really fork an inferior shell? | |
6170 | But that would not provide any way to get back | |
6171 | to the original shell, ever. */ | |
6172 | printf ("No support for stopping a process on this operating system;\n"); | |
6173 | printf ("you can continue or abort.\n"); | |
6174 | #endif /* not VMS */ | |
6175 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
6176 | #ifdef MSDOS |
6177 | /* We must remain inside the screen area when the internal terminal | |
6178 | is used. Note that [Enter] is not echoed by dos. */ | |
6179 | cursor_to (0, 0); | |
6180 | #endif | |
284f4730 JB |
6181 | printf ("Auto-save? (y or n) "); |
6182 | fflush (stdout); | |
6183 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
6184 | { |
6185 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
6186 | #ifdef MSDOS |
6187 | printf ("\r\nAuto-save done"); | |
6188 | #else /* not MSDOS */ | |
9fd7d808 | 6189 | printf ("Auto-save done\n"); |
80e4aa30 | 6190 | #endif /* not MSDOS */ |
9fd7d808 | 6191 | } |
284f4730 | 6192 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
6193 | #ifdef MSDOS |
6194 | printf ("\r\nAbort? (y or n) "); | |
6195 | #else /* not MSDOS */ | |
284f4730 JB |
6196 | #ifdef VMS |
6197 | printf ("Abort (and enter debugger)? (y or n) "); | |
6198 | #else /* not VMS */ | |
6199 | printf ("Abort (and dump core)? (y or n) "); | |
6200 | #endif /* not VMS */ | |
80e4aa30 | 6201 | #endif /* not MSDOS */ |
284f4730 JB |
6202 | fflush (stdout); |
6203 | if (((c = getchar ()) & ~040) == 'Y') | |
6204 | abort (); | |
6205 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
6206 | #ifdef MSDOS |
6207 | printf ("\r\nContinuing...\r\n"); | |
6208 | #else /* not MSDOS */ | |
284f4730 | 6209 | printf ("Continuing...\n"); |
80e4aa30 | 6210 | #endif /* not MSDOS */ |
284f4730 JB |
6211 | fflush (stdout); |
6212 | init_sys_modes (); | |
6213 | } | |
6214 | else | |
6215 | { | |
6216 | /* If executing a function that wants to be interrupted out of | |
6217 | and the user has not deferred quitting by binding `inhibit-quit' | |
6218 | then quit right away. */ | |
6219 | if (immediate_quit && NILP (Vinhibit_quit)) | |
6220 | { | |
6221 | immediate_quit = 0; | |
6222 | sigfree (); | |
6223 | Fsignal (Qquit, Qnil); | |
6224 | } | |
6225 | else | |
6226 | /* Else request quit when it's safe */ | |
6227 | Vquit_flag = Qt; | |
6228 | } | |
6229 | ||
6230 | if (waiting_for_input && !echoing) | |
6231 | quit_throw_to_read_char (); | |
6232 | ||
6233 | errno = old_errno; | |
6234 | } | |
6235 | ||
6236 | /* Handle a C-g by making read_char return C-g. */ | |
6237 | ||
6238 | quit_throw_to_read_char () | |
6239 | { | |
6240 | quit_error_check (); | |
6241 | sigfree (); | |
6242 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 6243 | clear_waiting_for_input (); |
284f4730 JB |
6244 | input_pending = 0; |
6245 | ||
24597608 | 6246 | Vunread_command_events = Qnil; |
86e5706b | 6247 | unread_command_char = -1; |
284f4730 | 6248 | |
e6b01c14 JB |
6249 | #ifdef POLL_FOR_INPUT |
6250 | /* May be > 1 if in recursive minibuffer. */ | |
6251 | if (poll_suppress_count == 0) | |
6252 | abort (); | |
6253 | #endif | |
0dfcc832 | 6254 | #ifdef MULTI_FRAME |
4c52b668 KH |
6255 | if (FRAMEP (internal_last_event_frame) |
6256 | && XFRAME (internal_last_event_frame) != selected_frame) | |
6257 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); | |
0dfcc832 | 6258 | #endif |
e6b01c14 | 6259 | |
284f4730 JB |
6260 | _longjmp (getcjmp, 1); |
6261 | } | |
6262 | \f | |
6263 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
6264 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
6265 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
6266 | nil means use CBREAK mode.\n\ | |
6267 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 6268 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
6269 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
6270 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
6271 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
6272 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
6273 | See also `current-input-mode'.") | |
284f4730 JB |
6274 | (interrupt, flow, meta, quit) |
6275 | Lisp_Object interrupt, flow, meta, quit; | |
6276 | { | |
6277 | if (!NILP (quit) | |
8c18cbfb | 6278 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
6279 | error ("set-input-mode: QUIT must be an ASCII character"); |
6280 | ||
6281 | #ifdef POLL_FOR_INPUT | |
6282 | stop_polling (); | |
6283 | #endif | |
284f4730 JB |
6284 | |
6285 | reset_sys_modes (); | |
6286 | #ifdef SIGIO | |
6287 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
6288 | #ifdef NO_SOCK_SIGIO | |
6289 | if (read_socket_hook) | |
6290 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
6291 | else | |
6292 | #endif /* NO_SOCK_SIGIO */ | |
6293 | interrupt_input = !NILP (interrupt); | |
6294 | #else /* not SIGIO */ | |
6295 | interrupt_input = 0; | |
6296 | #endif /* not SIGIO */ | |
6297 | /* Our VMS input only works by interrupts, as of now. */ | |
6298 | #ifdef VMS | |
6299 | interrupt_input = 1; | |
6300 | #endif | |
6301 | flow_control = !NILP (flow); | |
b04904fb RS |
6302 | if (NILP (meta)) |
6303 | meta_key = 0; | |
6304 | else if (EQ (meta, Qt)) | |
6305 | meta_key = 1; | |
6306 | else | |
6307 | meta_key = 2; | |
284f4730 JB |
6308 | if (!NILP (quit)) |
6309 | /* Don't let this value be out of range. */ | |
6310 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
6311 | ||
6312 | init_sys_modes (); | |
34f04431 RS |
6313 | |
6314 | #ifdef POLL_FOR_INPUT | |
6315 | poll_suppress_count = 1; | |
6316 | start_polling (); | |
6317 | #endif | |
284f4730 JB |
6318 | return Qnil; |
6319 | } | |
80645119 JB |
6320 | |
6321 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
6322 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
6323 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
6324 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
6325 | nil, Emacs is using CBREAK mode.\n\ | |
6326 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
6327 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
6328 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
6329 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
6330 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
6331 | all 8 bits as the character code.\n\ | |
80645119 JB |
6332 | QUIT is the character Emacs currently uses to quit.\n\ |
6333 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 6334 | `set-input-mode'.") |
80645119 JB |
6335 | () |
6336 | { | |
6337 | Lisp_Object val[4]; | |
6338 | ||
6339 | val[0] = interrupt_input ? Qt : Qnil; | |
6340 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 6341 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 6342 | XSETFASTINT (val[3], quit_char); |
80645119 | 6343 | |
bf673a7a | 6344 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
6345 | } |
6346 | ||
284f4730 | 6347 | \f |
6c6083a9 KH |
6348 | /* |
6349 | * Set up a perdisplay object with reasonable initial values. | |
6350 | */ | |
6351 | void | |
6352 | init_perdisplay (perd) | |
6353 | PERDISPLAY *perd; | |
6354 | { | |
4c52b668 KH |
6355 | perd->prefix_factor = Qnil; |
6356 | perd->prefix_value = Qnil; | |
6357 | perd->prefix_sign = 1; | |
6358 | perd->prefix_partial = 0; | |
beecf6a1 | 6359 | perd->kbd_queue = Qnil; |
267de7a1 KH |
6360 | perd->immediate_echo = 0; |
6361 | perd->echoptr = perd->echobuf; | |
6362 | perd->echo_after_prompt = -1; | |
8066f1a1 KH |
6363 | perd->kbd_macro_buffer = 0; |
6364 | perd->kbd_macro_bufsize = 0; | |
6365 | perd->defining_kbd_macro = Qnil; | |
b2ca5e69 | 6366 | perd->Vlast_kbd_macro = Qnil; |
6c6083a9 KH |
6367 | } |
6368 | ||
6369 | /* | |
6370 | * Destroy the contents of a perdisplay object, but not the object itself. | |
6371 | * We use this just before deleteing it, or if we're going to initialize | |
6372 | * it a second time. | |
6373 | */ | |
6374 | void | |
6375 | wipe_perdisplay (perd) | |
6376 | PERDISPLAY *perd; | |
6377 | { | |
8066f1a1 KH |
6378 | if (perd->kbd_macro_buffer) |
6379 | xfree (perd->kbd_macro_buffer); | |
6c6083a9 KH |
6380 | } |
6381 | ||
284f4730 JB |
6382 | init_keyboard () |
6383 | { | |
284f4730 JB |
6384 | /* This is correct before outermost invocation of the editor loop */ |
6385 | command_loop_level = -1; | |
6386 | immediate_quit = 0; | |
6387 | quit_char = Ctl ('g'); | |
24597608 | 6388 | Vunread_command_events = Qnil; |
86e5706b | 6389 | unread_command_char = -1; |
284f4730 | 6390 | total_keys = 0; |
9deb415a | 6391 | recent_keys_index = 0; |
beecf6a1 KH |
6392 | kbd_fetch_ptr = kbd_buffer; |
6393 | kbd_store_ptr = kbd_buffer; | |
6394 | kbd_buffer_frame_or_window | |
6395 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 6396 | #ifdef HAVE_MOUSE |
a9d77f1f | 6397 | do_mouse_tracking = Qnil; |
2eb6bfbe | 6398 | #endif |
284f4730 JB |
6399 | input_pending = 0; |
6400 | ||
4c52b668 KH |
6401 | #ifdef MULTI_FRAME |
6402 | /* This means that command_loop_1 won't try to select anything the first | |
6403 | time through. */ | |
6404 | internal_last_event_frame = Qnil; | |
6405 | Vlast_event_frame = internal_last_event_frame; | |
6406 | #endif | |
6407 | ||
6c6083a9 | 6408 | #ifndef MULTI_PERDISPLAY |
4bb994d1 | 6409 | if (initialized) |
6c6083a9 KH |
6410 | wipe_perdisplay (&the_only_perdisplay); |
6411 | init_perdisplay (&the_only_perdisplay); | |
6412 | #endif | |
07d2b8de | 6413 | |
beecf6a1 KH |
6414 | if (initialized) |
6415 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
6416 | ||
6417 | kbd_buffer_frame_or_window | |
6418 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 6419 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
6420 | { |
6421 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 6422 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
6423 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
6424 | SIGQUIT and we can't tell which one it will give us. */ | |
6425 | signal (SIGQUIT, interrupt_signal); | |
6426 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 6427 | } |
284f4730 JB |
6428 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6429 | #ifdef SIGIO | |
7a80a6f6 RS |
6430 | if (!noninteractive) |
6431 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6432 | #endif /* SIGIO */ |
284f4730 JB |
6433 | |
6434 | /* Use interrupt input by default, if it works and noninterrupt input | |
6435 | has deficiencies. */ | |
6436 | ||
6437 | #ifdef INTERRUPT_INPUT | |
6438 | interrupt_input = 1; | |
6439 | #else | |
6440 | interrupt_input = 0; | |
6441 | #endif | |
6442 | ||
6443 | /* Our VMS input only works by interrupts, as of now. */ | |
6444 | #ifdef VMS | |
6445 | interrupt_input = 1; | |
6446 | #endif | |
6447 | ||
6448 | sigfree (); | |
6449 | dribble = 0; | |
6450 | ||
6451 | if (keyboard_init_hook) | |
6452 | (*keyboard_init_hook) (); | |
6453 | ||
6454 | #ifdef POLL_FOR_INPUT | |
6455 | poll_suppress_count = 1; | |
6456 | start_polling (); | |
6457 | #endif | |
6458 | } | |
6459 | ||
6460 | /* This type's only use is in syms_of_keyboard, to initialize the | |
6461 | event header symbols and put properties on them. */ | |
6462 | struct event_head { | |
6463 | Lisp_Object *var; | |
6464 | char *name; | |
6465 | Lisp_Object *kind; | |
6466 | }; | |
6467 | ||
6468 | struct event_head head_table[] = { | |
7b4aedb9 | 6469 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6470 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6471 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6472 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6473 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6474 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6475 | }; |
6476 | ||
6477 | syms_of_keyboard () | |
6478 | { | |
2e894dab RS |
6479 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6480 | staticpro (&Qdisabled_command_hook); | |
6481 | ||
284f4730 JB |
6482 | Qself_insert_command = intern ("self-insert-command"); |
6483 | staticpro (&Qself_insert_command); | |
6484 | ||
6485 | Qforward_char = intern ("forward-char"); | |
6486 | staticpro (&Qforward_char); | |
6487 | ||
6488 | Qbackward_char = intern ("backward-char"); | |
6489 | staticpro (&Qbackward_char); | |
6490 | ||
6491 | Qdisabled = intern ("disabled"); | |
6492 | staticpro (&Qdisabled); | |
6493 | ||
e58aa385 RS |
6494 | Qundefined = intern ("undefined"); |
6495 | staticpro (&Qundefined); | |
6496 | ||
4c52b668 KH |
6497 | Qdigit_argument = intern ("digit-argument"); |
6498 | staticpro (&Qdigit_argument); | |
6499 | ||
6500 | Qnegative_argument = intern ("negative-argument"); | |
6501 | staticpro (&Qnegative_argument); | |
6502 | ||
86e5706b RS |
6503 | Qpre_command_hook = intern ("pre-command-hook"); |
6504 | staticpro (&Qpre_command_hook); | |
6505 | ||
6506 | Qpost_command_hook = intern ("post-command-hook"); | |
6507 | staticpro (&Qpost_command_hook); | |
6508 | ||
3ef14e46 RS |
6509 | Qdeferred_action_function = intern ("deferred-action-function"); |
6510 | staticpro (&Qdeferred_action_function); | |
6511 | ||
40932d1a RS |
6512 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6513 | staticpro (&Qcommand_hook_internal); | |
6514 | ||
284f4730 JB |
6515 | Qfunction_key = intern ("function-key"); |
6516 | staticpro (&Qfunction_key); | |
13b5e56c | 6517 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6518 | staticpro (&Qmouse_click); |
284f4730 | 6519 | |
598a9fa7 JB |
6520 | Qmenu_enable = intern ("menu-enable"); |
6521 | staticpro (&Qmenu_enable); | |
6522 | ||
284f4730 JB |
6523 | Qmode_line = intern ("mode-line"); |
6524 | staticpro (&Qmode_line); | |
e5d77022 JB |
6525 | Qvertical_line = intern ("vertical-line"); |
6526 | staticpro (&Qvertical_line); | |
3c370943 JB |
6527 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6528 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6529 | Qmenu_bar = intern ("menu-bar"); |
6530 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6531 | |
6532 | Qabove_handle = intern ("above-handle"); | |
6533 | staticpro (&Qabove_handle); | |
6534 | Qhandle = intern ("handle"); | |
6535 | staticpro (&Qhandle); | |
6536 | Qbelow_handle = intern ("below-handle"); | |
6537 | staticpro (&Qbelow_handle); | |
284f4730 | 6538 | |
cd21b839 | 6539 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6540 | staticpro (&Qevent_kind); |
88cb0656 JB |
6541 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6542 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6543 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6544 | staticpro (&Qevent_symbol_element_mask); | |
6545 | Qmodifier_cache = intern ("modifier-cache"); | |
6546 | staticpro (&Qmodifier_cache); | |
284f4730 | 6547 | |
48e416d4 RS |
6548 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6549 | staticpro (&Qrecompute_lucid_menubar); | |
6550 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6551 | staticpro (&Qactivate_menubar_hook); | |
6552 | ||
f4eef8b4 RS |
6553 | Qpolling_period = intern ("polling-period"); |
6554 | staticpro (&Qpolling_period); | |
6555 | ||
284f4730 JB |
6556 | { |
6557 | struct event_head *p; | |
6558 | ||
6559 | for (p = head_table; | |
6560 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6561 | p++) | |
6562 | { | |
6563 | *p->var = intern (p->name); | |
6564 | staticpro (p->var); | |
6565 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6566 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6567 | } |
6568 | } | |
6569 | ||
7b4aedb9 JB |
6570 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6571 | staticpro (&button_down_location); | |
88cb0656 JB |
6572 | |
6573 | { | |
6574 | int i; | |
6575 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6576 | ||
6577 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6578 | for (i = 0; i < len; i++) | |
86e5706b RS |
6579 | if (modifier_names[i]) |
6580 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6581 | staticpro (&modifier_symbols); |
6582 | } | |
6583 | ||
9deb415a JB |
6584 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6585 | staticpro (&recent_keys); | |
6586 | ||
6569cc8d | 6587 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6588 | staticpro (&this_command_keys); |
6569cc8d | 6589 | |
03b4122a BF |
6590 | Qextended_command_history = intern ("extended-command-history"); |
6591 | Fset (Qextended_command_history, Qnil); | |
6592 | staticpro (&Qextended_command_history); | |
6593 | ||
beecf6a1 KH |
6594 | kbd_buffer_frame_or_window |
6595 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6596 | staticpro (&kbd_buffer_frame_or_window); | |
6597 | ||
24597608 RS |
6598 | accent_key_syms = Qnil; |
6599 | staticpro (&accent_key_syms); | |
6600 | ||
284f4730 JB |
6601 | func_key_syms = Qnil; |
6602 | staticpro (&func_key_syms); | |
6603 | ||
4e0e7d8e RS |
6604 | system_key_syms = Qnil; |
6605 | staticpro (&system_key_syms); | |
6606 | ||
284f4730 JB |
6607 | mouse_syms = Qnil; |
6608 | staticpro (&mouse_syms); | |
6609 | ||
cd21b839 JB |
6610 | unread_switch_frame = Qnil; |
6611 | staticpro (&unread_switch_frame); | |
6612 | ||
284f4730 JB |
6613 | defsubr (&Sread_key_sequence); |
6614 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6615 | #ifdef HAVE_MOUSE |
284f4730 | 6616 | defsubr (&Strack_mouse); |
2eb6bfbe | 6617 | #endif |
284f4730 JB |
6618 | defsubr (&Sinput_pending_p); |
6619 | defsubr (&Scommand_execute); | |
6620 | defsubr (&Srecent_keys); | |
6621 | defsubr (&Sthis_command_keys); | |
6622 | defsubr (&Ssuspend_emacs); | |
6623 | defsubr (&Sabort_recursive_edit); | |
6624 | defsubr (&Sexit_recursive_edit); | |
6625 | defsubr (&Srecursion_depth); | |
6626 | defsubr (&Stop_level); | |
6627 | defsubr (&Sdiscard_input); | |
6628 | defsubr (&Sopen_dribble_file); | |
6629 | defsubr (&Sset_input_mode); | |
80645119 | 6630 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6631 | defsubr (&Sexecute_extended_command); |
6632 | ||
284f4730 | 6633 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6634 | "Last input event that was part of a command."); |
6635 | ||
186cf719 | 6636 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6637 | "Last input event that was part of a command."); |
284f4730 | 6638 | |
7d6de002 | 6639 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6640 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6641 | Mouse menus give back keys that don't look like mouse events;\n\ |
6642 | this variable holds the actual mouse event that led to the menu,\n\ | |
6643 | so that you can determine whether the command was run by mouse or not."); | |
6644 | ||
284f4730 | 6645 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6646 | "Last input event."); |
6647 | ||
186cf719 | 6648 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6649 | "Last input event."); |
284f4730 | 6650 | |
24597608 | 6651 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6652 | "List of objects to be read as next command input events."); |
284f4730 | 6653 | |
86e5706b RS |
6654 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6655 | "If not -1, an object to be read as next command input event."); | |
6656 | ||
284f4730 JB |
6657 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6658 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6659 | turns into this character followed by foo."); | |
18cd2eeb | 6660 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6661 | |
6662 | DEFVAR_LISP ("last-command", &last_command, | |
6663 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6664 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
6665 | `this-command' was set to by that command.\n\ |
6666 | \n\ | |
6667 | The value `mode-exit' is special; it means that the previous command\n\ | |
6668 | read an event that told it to exit, and it did so and unread that event.\n\ | |
6669 | In other words, the present command is the event that made the previous\n\ | |
6670 | command exit.\n\ | |
6671 | \n\ | |
6672 | The value `kill-region' is special; it means that the previous command\n\ | |
6673 | was a kill command."); | |
284f4730 JB |
6674 | last_command = Qnil; |
6675 | ||
6676 | DEFVAR_LISP ("this-command", &this_command, | |
6677 | "The command now being executed.\n\ | |
6678 | The command can set this variable; whatever is put here\n\ | |
6679 | will be in `last-command' during the following command."); | |
6680 | this_command = Qnil; | |
6681 | ||
6682 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6683 | "*Number of keyboard input characters between auto-saves.\n\ | |
6684 | Zero means disable autosaving due to number of characters typed."); | |
6685 | auto_save_interval = 300; | |
6686 | ||
6687 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6688 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6689 | Zero or nil means disable auto-saving due to idleness.\n\ |
6690 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6691 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6692 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6693 | |
6694 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6695 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6696 | echo_keystrokes = 1; | |
6697 | ||
6698 | DEFVAR_INT ("polling-period", &polling_period, | |
6699 | "*Interval between polling for input during Lisp execution.\n\ | |
6700 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6701 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6702 | Polling is automatically disabled in all other cases."); | |
6703 | polling_period = 2; | |
6704 | ||
564dc952 | 6705 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6706 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6707 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6708 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6709 | by position only."); |
aab06933 | 6710 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6711 | |
03361bcc RS |
6712 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6713 | "*Non-nil means inhibit local map menu bar menus."); | |
6714 | inhibit_local_menu_bar_menus = 0; | |
6715 | ||
284f4730 | 6716 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 6717 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
6718 | num_input_keys = 0; |
6719 | ||
4c52b668 KH |
6720 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
6721 | "The frame in which the most recently read event occurred.\n\ | |
6722 | If the last event came from a keyboard macro, this is set to `macro'."); | |
6723 | Vlast_event_frame = Qnil; | |
6724 | ||
7e85b935 | 6725 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6726 | "Character to recognize as meaning Help.\n\ |
6727 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6728 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6729 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6730 | |
6731 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6732 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6733 | If the form returns a string, that string is displayed.\n\ |
6734 | If `help-form' is nil, the help char is not recognized."); | |
6735 | Vhelp_form = Qnil; | |
6736 | ||
7e85b935 RS |
6737 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6738 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6739 | This command is used only when there is no actual binding\n\ | |
6740 | for that character after that prefix key."); | |
6741 | Vprefix_help_command = Qnil; | |
6742 | ||
284f4730 JB |
6743 | DEFVAR_LISP ("top-level", &Vtop_level, |
6744 | "Form to evaluate when Emacs starts up.\n\ | |
6745 | Useful to set before you dump a modified Emacs."); | |
6746 | Vtop_level = Qnil; | |
6747 | ||
6748 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6749 | "String used as translate table for keyboard input, or nil.\n\ | |
6750 | Each character is looked up in this string and the contents used instead.\n\ | |
6751 | If string is of length N, character codes N and up are untranslated."); | |
6752 | Vkeyboard_translate_table = Qnil; | |
6753 | ||
a612e298 RS |
6754 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6755 | "Keymap of key translations that can override keymaps.\n\ | |
6756 | This keymap works like `function-key-map', but comes after that,\n\ | |
6757 | and applies even for keys that have ordinary bindings."); | |
6758 | Vkey_translation_map = Qnil; | |
6759 | ||
8026024c KH |
6760 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6761 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6762 | even if the operating system has support for stopping a process."); | |
6763 | cannot_suspend = 0; | |
6764 | ||
284f4730 | 6765 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6766 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6767 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6768 | for elements that have prompt strings.\n\ |
6769 | The menu is displayed on the screen\n\ | |
6770 | if X menus were enabled at configuration\n\ | |
6771 | time and the previous event was a mouse click prefix key.\n\ | |
6772 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6773 | menu_prompting = 1; |
6774 | ||
6775 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6776 | "Character to see next line of menu prompt.\n\ | |
6777 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 6778 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
6779 | |
6780 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6781 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6782 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6783 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 6784 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
6785 | all input characters will have the control modifier applied to them.\n\ |
6786 | \n\ | |
9d9f56dd | 6787 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 6788 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 6789 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6790 | cancels any modification."); |
9fa4395d | 6791 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6792 | |
6793 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6794 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6795 | The command loop sets this to nil before each command,\n\ | |
6796 | and tests the value when the command returns.\n\ | |
6797 | Buffer modification stores t in this variable."); | |
6798 | Vdeactivate_mark = Qnil; | |
6799 | ||
b0f2a7bf KH |
6800 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6801 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6802 | Vcommand_hook_internal = Qnil; | |
6803 | ||
86e5706b | 6804 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6805 | "Normal hook run before each command is executed.\n\ |
6806 | While the hook is run, its value is temporarily set to nil\n\ | |
6807 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6808 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6809 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6810 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6811 | Vpre_command_hook = Qnil; |
6812 | ||
6813 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6814 | "Normal hook run after each command is executed.\n\ |
6815 | While the hook is run, its value is temporarily set to nil\n\ | |
6816 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6817 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6818 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6819 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6820 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6821 | |
6822 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6823 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6824 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6825 | |
9f9c0e27 RS |
6826 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6827 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6828 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6829 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6830 | |
9dd3131c RS |
6831 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6832 | "Keymap that overrides all other local keymaps.\n\ | |
6833 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6834 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6835 | Voverriding_local_map = Qnil; | |
6836 | ||
d0a49716 RS |
6837 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
6838 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
6839 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
6840 | and the minor mode maps regardless of `overriding-local-map'."); | |
6841 | Voverriding_local_map_menu_flag = Qnil; | |
6842 | ||
2eb6bfbe | 6843 | #ifdef HAVE_MOUSE |
71edead1 | 6844 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
e9bf89a0 | 6845 | "*Non-nil means generate motion events for mouse motion."); |
2eb6bfbe | 6846 | #endif |
80e4aa30 | 6847 | |
270a208f RS |
6848 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6849 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6850 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6851 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6852 | and SYMBOL is its name."); |
a69a8ca2 | 6853 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6854 | |
6855 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6856 | "List of deferred actions to be performed at a later time.\n\ | |
6857 | The precise format isn't relevant here; we just check whether it is nil."); | |
6858 | Vdeferred_action_list = Qnil; | |
6859 | ||
6860 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6861 | "Function to call to handle deferred actions, after each command.\n\ | |
6862 | This function is called with no arguments after each command\n\ | |
6863 | whenever `deferred-action-list' is non-nil."); | |
6864 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
6865 | } |
6866 | ||
6867 | keys_of_keyboard () | |
6868 | { | |
6869 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6870 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6871 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6872 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6873 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6874 | } |