Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
3a22ee35 | 2 | Copyright (C) 1985,86,87,88,89,93,94 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 JB |
24 | #include <stdio.h> |
25 | #undef NULL | |
26 | #include "termchar.h" | |
27 | #include "termopts.h" | |
28 | #include "lisp.h" | |
29 | #include "termhooks.h" | |
30 | #include "macros.h" | |
ff11dfa1 | 31 | #include "frame.h" |
284f4730 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "buffer.h" | |
35 | #include "disptab.h" | |
f4255cd1 | 36 | #include "dispextern.h" |
284f4730 | 37 | #include "keyboard.h" |
497ba7a1 | 38 | #include "intervals.h" |
9ac0d9e0 | 39 | #include "blockinput.h" |
284f4730 JB |
40 | #include <setjmp.h> |
41 | #include <errno.h> | |
42 | ||
80e4aa30 RS |
43 | #ifdef MSDOS |
44 | #include "msdos.h" | |
45 | #include <time.h> | |
46 | #else /* not MSDOS */ | |
284f4730 JB |
47 | #ifndef VMS |
48 | #include <sys/ioctl.h> | |
284f4730 | 49 | #endif |
80e4aa30 | 50 | #endif /* not MSDOS */ |
284f4730 | 51 | |
52baf19e | 52 | #include "syssignal.h" |
6ef5b54f | 53 | #include "systty.h" |
52baf19e | 54 | |
c5e3b6c5 RS |
55 | /* This is to get the definitions of the XK_ symbols. */ |
56 | #ifdef HAVE_X_WINDOWS | |
57 | #include "xterm.h" | |
58 | #endif | |
59 | ||
0c2611c5 RS |
60 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
61 | #include "systime.h" | |
62 | ||
52baf19e JB |
63 | extern int errno; |
64 | ||
9ac0d9e0 JB |
65 | /* Variables for blockinput.h: */ |
66 | ||
67 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 68 | int interrupt_input_blocked; |
9ac0d9e0 JB |
69 | |
70 | /* Nonzero means an input interrupt has arrived | |
71 | during the current critical section. */ | |
63927c41 | 72 | int interrupt_input_pending; |
9ac0d9e0 JB |
73 | |
74 | ||
437f6112 RS |
75 | /* File descriptor to use for input. */ |
76 | extern int input_fd; | |
284f4730 | 77 | |
bcce3e02 | 78 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
79 | /* Make all keyboard buffers much bigger when using X windows. */ |
80 | #define KBD_BUFFER_SIZE 4096 | |
81 | #else /* No X-windows, character input */ | |
82 | #define KBD_BUFFER_SIZE 256 | |
83 | #endif /* No X-windows */ | |
84 | ||
85 | /* Following definition copied from eval.c */ | |
86 | ||
87 | struct backtrace | |
88 | { | |
89 | struct backtrace *next; | |
90 | Lisp_Object *function; | |
91 | Lisp_Object *args; /* Points to vector of args. */ | |
92 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
93 | args points to slot holding list of | |
94 | unevalled args */ | |
95 | char evalargs; | |
96 | }; | |
97 | ||
98 | /* Non-nil disable property on a command means | |
99 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 100 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
101 | |
102 | #define NUM_RECENT_KEYS (100) | |
103 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
104 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 105 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 106 | |
6569cc8d JB |
107 | /* Vector holding the key sequence that invoked the current command. |
108 | It is reused for each command, and it may be longer than the current | |
109 | sequence; this_command_key_count indicates how many elements | |
110 | actually mean something. | |
111 | It's easier to staticpro a single Lisp_Object than an array. */ | |
112 | Lisp_Object this_command_keys; | |
113 | int this_command_key_count; | |
284f4730 JB |
114 | |
115 | extern int minbuf_level; | |
116 | ||
117 | extern struct backtrace *backtrace_list; | |
118 | ||
119 | /* Nonzero means do menu prompting. */ | |
120 | static int menu_prompting; | |
121 | ||
122 | /* Character to see next line of menu prompt. */ | |
123 | static Lisp_Object menu_prompt_more_char; | |
124 | ||
125 | /* For longjmp to where kbd input is being done. */ | |
126 | static jmp_buf getcjmp; | |
127 | ||
128 | /* True while doing kbd input. */ | |
129 | int waiting_for_input; | |
130 | ||
131 | /* True while displaying for echoing. Delays C-g throwing. */ | |
132 | static int echoing; | |
133 | ||
03361bcc RS |
134 | /* Nonzero means disregard local maps for the menu bar. */ |
135 | static int inhibit_local_menu_bar_menus; | |
136 | ||
80e4aa30 | 137 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
138 | int immediate_quit; |
139 | ||
140 | /* Character to recognize as the help char. */ | |
7e85b935 | 141 | Lisp_Object Vhelp_char; |
284f4730 JB |
142 | |
143 | /* Form to execute when help char is typed. */ | |
144 | Lisp_Object Vhelp_form; | |
145 | ||
7e85b935 RS |
146 | /* Command to run when the help character follows a prefix key. */ |
147 | Lisp_Object Vprefix_help_command; | |
148 | ||
9f9c0e27 RS |
149 | /* List of items that should move to the end of the menu bar. */ |
150 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 151 | |
284f4730 JB |
152 | /* Character that causes a quit. Normally C-g. |
153 | ||
154 | If we are running on an ordinary terminal, this must be an ordinary | |
155 | ASCII char, since we want to make it our interrupt character. | |
156 | ||
157 | If we are not running on an ordinary terminal, it still needs to be | |
158 | an ordinary ASCII char. This character needs to be recognized in | |
159 | the input interrupt handler. At this point, the keystroke is | |
160 | represented as a struct input_event, while the desired quit | |
161 | character is specified as a lispy event. The mapping from struct | |
162 | input_events to lispy events cannot run in an interrupt handler, | |
163 | and the reverse mapping is difficult for anything but ASCII | |
164 | keystrokes. | |
165 | ||
166 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
167 | ASCII character. */ | |
168 | int quit_char; | |
169 | ||
170 | extern Lisp_Object current_global_map; | |
171 | extern int minibuf_level; | |
172 | ||
9dd3131c RS |
173 | /* If non-nil, this is a map that overrides all other local maps. */ |
174 | Lisp_Object Voverriding_local_map; | |
175 | ||
d0a49716 RS |
176 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
177 | Lisp_Object Voverriding_local_map_menu_flag; | |
178 | ||
284f4730 JB |
179 | /* Current depth in recursive edits. */ |
180 | int command_loop_level; | |
181 | ||
182 | /* Total number of times command_loop has read a key sequence. */ | |
183 | int num_input_keys; | |
184 | ||
185 | /* Last input character read as a command. */ | |
186 | Lisp_Object last_command_char; | |
187 | ||
7d6de002 RS |
188 | /* Last input character read as a command, not counting menus |
189 | reached by the mouse. */ | |
190 | Lisp_Object last_nonmenu_event; | |
191 | ||
284f4730 JB |
192 | /* Last input character read for any purpose. */ |
193 | Lisp_Object last_input_char; | |
194 | ||
dbc4e1c1 | 195 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 196 | Lisp_Object Vunread_command_events; |
284f4730 | 197 | |
86e5706b RS |
198 | /* If not -1, an event to be read as subsequent command input. */ |
199 | int unread_command_char; | |
200 | ||
cd21b839 JB |
201 | /* If not Qnil, this is a switch-frame event which we decided to put |
202 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 203 | next command input, after any unread_command_events. |
8f805655 JB |
204 | |
205 | read_key_sequence uses this to delay switch-frame events until the | |
206 | end of the key sequence; Fread_char uses it to put off switch-frame | |
207 | events until a non-ASCII event is acceptable as input. */ | |
208 | Lisp_Object unread_switch_frame; | |
cd21b839 | 209 | |
9fa4395d RS |
210 | /* A mask of extra modifier bits to put into every keyboard char. */ |
211 | int extra_keyboard_modifiers; | |
212 | ||
284f4730 JB |
213 | /* Char to use as prefix when a meta character is typed in. |
214 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
215 | ||
216 | Lisp_Object meta_prefix_char; | |
217 | ||
218 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
219 | static int last_non_minibuf_size; | |
220 | ||
06ef7355 | 221 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
222 | static Lisp_Object Vauto_save_timeout; |
223 | ||
224 | /* Total number of times read_char has returned. */ | |
225 | int num_input_chars; | |
226 | ||
51172b6d RS |
227 | /* Total number of times read_char has returned, outside of macros. */ |
228 | int num_nonmacro_input_chars; | |
229 | ||
284f4730 JB |
230 | /* Auto-save automatically when this many characters have been typed |
231 | since the last time. */ | |
232 | ||
233 | static int auto_save_interval; | |
234 | ||
51172b6d | 235 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
236 | |
237 | int last_auto_save; | |
238 | ||
239 | /* Last command executed by the editor command loop, not counting | |
240 | commands that set the prefix argument. */ | |
241 | ||
242 | Lisp_Object last_command; | |
243 | ||
244 | /* The command being executed by the command loop. | |
245 | Commands may set this, and the value set will be copied into last_command | |
246 | instead of the actual command. */ | |
247 | Lisp_Object this_command; | |
248 | ||
b453f72e KH |
249 | /* The value of point when the last command was executed. */ |
250 | int last_point_position; | |
251 | ||
047688cb RS |
252 | /* The buffer that was current when the last command was started. */ |
253 | Lisp_Object last_point_position_buffer; | |
254 | ||
07d2b8de | 255 | #ifdef MULTI_FRAME |
fce33686 | 256 | /* The frame in which the last input event occurred, or Qmacro if the |
3c370943 JB |
257 | last event came from a macro. We use this to determine when to |
258 | generate switch-frame events. This may be cleared by functions | |
259 | like Fselect_frame, to make sure that a switch-frame event is | |
260 | generated by the next character. */ | |
261 | Lisp_Object internal_last_event_frame; | |
a974bea1 | 262 | #endif |
3c370943 JB |
263 | |
264 | /* A user-visible version of the above, intended to allow users to | |
265 | figure out where the last event came from, if the event doesn't | |
266 | carry that information itself (i.e. if it was a character). */ | |
ff11dfa1 | 267 | Lisp_Object Vlast_event_frame; |
284f4730 | 268 | |
1113d9db JB |
269 | /* The timestamp of the last input event we received from the X server. |
270 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
271 | unsigned long last_event_timestamp; |
272 | ||
273 | Lisp_Object Qself_insert_command; | |
274 | Lisp_Object Qforward_char; | |
275 | Lisp_Object Qbackward_char; | |
e58aa385 | 276 | Lisp_Object Qundefined; |
284f4730 JB |
277 | |
278 | /* read_key_sequence stores here the command definition of the | |
279 | key sequence that it reads. */ | |
280 | Lisp_Object read_key_sequence_cmd; | |
281 | ||
282 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
283 | Lisp_Object Vtop_level; | |
284 | ||
285 | /* User-supplied string to translate input characters through. */ | |
286 | Lisp_Object Vkeyboard_translate_table; | |
287 | ||
288 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
289 | extern Lisp_Object Vfunction_key_map; | |
290 | ||
a612e298 RS |
291 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
292 | Lisp_Object Vkey_translation_map; | |
293 | ||
86e5706b RS |
294 | /* Non-nil means deactivate the mark at end of this command. */ |
295 | Lisp_Object Vdeactivate_mark; | |
296 | ||
48e416d4 RS |
297 | /* Menu bar specified in Lucid Emacs fashion. */ |
298 | ||
299 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
300 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
301 | ||
86e5706b RS |
302 | /* Hooks to run before and after each command. */ |
303 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
304 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 305 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 306 | |
8a792f3a RS |
307 | /* List of deferred actions to be performed at a later time. |
308 | The precise format isn't relevant here; we just check whether it is nil. */ | |
309 | Lisp_Object Vdeferred_action_list; | |
310 | ||
311 | /* Function to call to handle deferred actions, when there are any. */ | |
312 | Lisp_Object Vdeferred_action_function; | |
313 | ||
284f4730 JB |
314 | /* File in which we write all commands we read. */ |
315 | FILE *dribble; | |
316 | ||
317 | /* Nonzero if input is available. */ | |
318 | int input_pending; | |
319 | ||
b04904fb RS |
320 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
321 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
322 | ||
284f4730 JB |
323 | int meta_key; |
324 | ||
325 | extern char *pending_malloc_warning; | |
326 | ||
327 | /* Circular buffer for pre-read keyboard input. */ | |
328 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
329 | ||
7b4aedb9 | 330 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. |
4bb994d1 | 331 | |
7b4aedb9 JB |
332 | The interrupt-level event handlers will never enqueue an event on a |
333 | frame which is not in Vframe_list, and once an event is dequeued, | |
3c370943 JB |
334 | internal_last_event_frame or the event itself points to the frame. |
335 | So that's all fine. | |
4bb994d1 JB |
336 | |
337 | But while the event is sitting in the queue, it's completely | |
338 | unprotected. Suppose the user types one command which will run for | |
339 | a while and then delete a frame, and then types another event at | |
340 | the frame that will be deleted, before the command gets around to | |
341 | it. Suppose there are no references to this frame elsewhere in | |
342 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
343 | have an event referring to a freed frame, which will crash Emacs | |
344 | when it is dequeued. | |
345 | ||
3c370943 | 346 | Similar things happen when an event on a scroll bar is enqueued; the |
7b4aedb9 | 347 | window may be deleted while the event is in the queue. |
4bb994d1 | 348 | |
7b4aedb9 JB |
349 | So, we use this vector to protect the frame_or_window field in the |
350 | event queue. That way, they'll be dequeued as dead frames or | |
351 | windows, but still valid lisp objects. | |
352 | ||
353 | If kbd_buffer[i].kind != no_event, then | |
354 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
355 | == kbd_buffer[i].frame_or_window. */ | |
356 | static Lisp_Object kbd_buffer_frame_or_window; | |
4bb994d1 | 357 | |
284f4730 JB |
358 | /* Pointer to next available character in kbd_buffer. |
359 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
360 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
361 | next available char is in kbd_buffer[0]. */ | |
362 | static struct input_event *kbd_fetch_ptr; | |
363 | ||
364 | /* Pointer to next place to store character in kbd_buffer. This | |
365 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
366 | character should go in kbd_buffer[0]. */ | |
c56fbd24 | 367 | static volatile struct input_event *kbd_store_ptr; |
284f4730 JB |
368 | |
369 | /* The above pair of variables forms a "queue empty" flag. When we | |
370 | enqueue a non-hook event, we increment kbd_write_count. When we | |
371 | dequeue a non-hook event, we increment kbd_read_count. We say that | |
4bb994d1 | 372 | there is input available iff the two counters are not equal. |
284f4730 JB |
373 | |
374 | Why not just have a flag set and cleared by the enqueuing and | |
375 | dequeuing functions? Such a flag could be screwed up by interrupts | |
376 | at inopportune times. */ | |
377 | ||
2eb6bfbe | 378 | #ifdef HAVE_MOUSE |
a9d77f1f RS |
379 | /* If this flag is a frame, we check mouse_moved to see when the |
380 | mouse moves, and motion events will appear in the input stream. | |
381 | Otherwise, mouse motion is ignored. */ | |
382 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
383 | |
384 | /* The window system handling code should set this if the mouse has | |
385 | moved since the last call to the mouse_position_hook. Calling that | |
386 | hook should clear this. Code assumes that if this is set, it can | |
387 | call mouse_position_hook to get the promised position, so don't set | |
388 | it unless you're prepared to substantiate the claim! */ | |
389 | int mouse_moved; | |
390 | ||
391 | /* True iff there is an event in kbd_buffer, or if mouse tracking is | |
392 | enabled and there is a new mouse position in the mouse movement | |
393 | buffer. Note that if this is false, that doesn't mean that there | |
394 | is readable input; all the events in the queue might be button-up | |
395 | events, and do_mouse_tracking might be off. */ | |
396 | #define EVENT_QUEUES_EMPTY \ | |
a9d77f1f RS |
397 | ((kbd_fetch_ptr == kbd_store_ptr) \ |
398 | && (! FRAMEP (do_mouse_tracking) || !mouse_moved)) | |
284f4730 | 399 | |
2eb6bfbe RM |
400 | #else /* Not HAVE_MOUSE. */ |
401 | #define EVENT_QUEUES_EMPTY (kbd_fetch_ptr == kbd_store_ptr) | |
402 | #endif /* HAVE_MOUSE. */ | |
284f4730 JB |
403 | |
404 | /* Symbols to head events. */ | |
405 | Lisp_Object Qmouse_movement; | |
3c370943 | 406 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 407 | Lisp_Object Qswitch_frame; |
bbdc2092 | 408 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
409 | Lisp_Object Qiconify_frame; |
410 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 411 | |
284f4730 JB |
412 | /* Symbols to denote kinds of events. */ |
413 | Lisp_Object Qfunction_key; | |
414 | Lisp_Object Qmouse_click; | |
415 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
416 | |
417 | /* Properties of event headers. */ | |
418 | Lisp_Object Qevent_kind; | |
88cb0656 | 419 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 420 | |
598a9fa7 JB |
421 | Lisp_Object Qmenu_enable; |
422 | ||
0a7f1fc0 JB |
423 | /* An event header symbol HEAD may have a property named |
424 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
425 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
426 | mask of modifiers applied to it. If present, this is used to help | |
427 | speed up parse_modifiers. */ | |
428 | Lisp_Object Qevent_symbol_element_mask; | |
429 | ||
430 | /* An unmodified event header BASE may have a property named | |
431 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
432 | modified versions of BASE. If present, this helps speed up | |
433 | apply_modifiers. */ | |
434 | Lisp_Object Qmodifier_cache; | |
435 | ||
5ec75a55 | 436 | /* Symbols to use for parts of windows. */ |
284f4730 | 437 | Lisp_Object Qmode_line; |
e5d77022 | 438 | Lisp_Object Qvertical_line; |
3c370943 | 439 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
440 | Lisp_Object Qmenu_bar; |
441 | ||
442 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 443 | |
f4255cd1 JB |
444 | Lisp_Object recursive_edit_unwind (), command_loop (); |
445 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 446 | Lisp_Object Qextended_command_history; |
284f4730 | 447 | |
f4eef8b4 RS |
448 | Lisp_Object Qpolling_period; |
449 | ||
ffd56f97 JB |
450 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
451 | happens. */ | |
452 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
453 | |
454 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
455 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
456 | int interrupt_input; | |
457 | ||
458 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
459 | int interrupts_deferred; | |
460 | ||
461 | /* nonzero means use ^S/^Q for flow control. */ | |
462 | int flow_control; | |
463 | ||
284f4730 JB |
464 | /* Allow m- file to inhibit use of FIONREAD. */ |
465 | #ifdef BROKEN_FIONREAD | |
466 | #undef FIONREAD | |
467 | #endif | |
468 | ||
469 | /* We are unable to use interrupts if FIONREAD is not available, | |
470 | so flush SIGIO so we won't try. */ | |
471 | #ifndef FIONREAD | |
472 | #ifdef SIGIO | |
473 | #undef SIGIO | |
474 | #endif | |
475 | #endif | |
476 | ||
34f04431 RS |
477 | /* If we support X Windows, turn on the code to poll periodically |
478 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 479 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
480 | #define POLL_FOR_INPUT |
481 | #endif | |
284f4730 JB |
482 | \f |
483 | /* Global variable declarations. */ | |
484 | ||
485 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
486 | void (*keyboard_init_hook) (); | |
487 | ||
488 | static int read_avail_input (); | |
489 | static void get_input_pending (); | |
9fd7d808 | 490 | static int readable_events (); |
8150596a RS |
491 | static Lisp_Object read_char_x_menu_prompt (); |
492 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
493 | static Lisp_Object make_lispy_event (); |
494 | static Lisp_Object make_lispy_movement (); | |
495 | static Lisp_Object modify_event_symbol (); | |
496 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
497 | |
498 | /* > 0 if we are to echo keystrokes. */ | |
499 | static int echo_keystrokes; | |
500 | ||
501 | /* Nonzero means echo each character as typed. */ | |
502 | static int immediate_echo; | |
503 | ||
504 | /* The text we're echoing in the modeline - partial key sequences, | |
f4255cd1 JB |
505 | usually. '\0'-terminated. This really shouldn't have a fixed size. */ |
506 | static char echobuf[300]; | |
284f4730 JB |
507 | |
508 | /* Where to append more text to echobuf if we want to. */ | |
509 | static char *echoptr; | |
510 | ||
7a80a6f6 RS |
511 | /* If we have echoed a prompt string specified by the user, |
512 | this is its length. Otherwise this is -1. */ | |
513 | static int echo_after_prompt; | |
514 | ||
8026024c KH |
515 | /* Nonzero means don't try to suspend even if the operating system seems |
516 | to support it. */ | |
517 | static int cannot_suspend; | |
518 | ||
284f4730 JB |
519 | #define min(a,b) ((a)<(b)?(a):(b)) |
520 | #define max(a,b) ((a)>(b)?(a):(b)) | |
521 | ||
522 | /* Install the string STR as the beginning of the string of echoing, | |
523 | so that it serves as a prompt for the next character. | |
524 | Also start echoing. */ | |
525 | ||
526 | echo_prompt (str) | |
527 | char *str; | |
528 | { | |
529 | int len = strlen (str); | |
7a80a6f6 | 530 | |
284f4730 JB |
531 | if (len > sizeof echobuf - 4) |
532 | len = sizeof echobuf - 4; | |
0a7f1fc0 | 533 | bcopy (str, echobuf, len); |
284f4730 | 534 | echoptr = echobuf + len; |
0a7f1fc0 | 535 | *echoptr = '\0'; |
284f4730 | 536 | |
7a80a6f6 RS |
537 | echo_after_prompt = len; |
538 | ||
284f4730 JB |
539 | echo (); |
540 | } | |
541 | ||
542 | /* Add C to the echo string, if echoing is going on. | |
543 | C can be a character, which is printed prettily ("M-C-x" and all that | |
544 | jazz), or a symbol, whose name is printed. */ | |
545 | ||
546 | echo_char (c) | |
547 | Lisp_Object c; | |
548 | { | |
549 | extern char *push_key_description (); | |
550 | ||
551 | if (immediate_echo) | |
552 | { | |
553 | char *ptr = echoptr; | |
554 | ||
555 | if (ptr != echobuf) | |
556 | *ptr++ = ' '; | |
557 | ||
558 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 559 | c = EVENT_HEAD (c); |
284f4730 | 560 | |
8c18cbfb | 561 | if (INTEGERP (c)) |
284f4730 JB |
562 | { |
563 | if (ptr - echobuf > sizeof echobuf - 6) | |
564 | return; | |
565 | ||
cb5df6ae | 566 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 567 | } |
8c18cbfb | 568 | else if (SYMBOLP (c)) |
284f4730 JB |
569 | { |
570 | struct Lisp_String *name = XSYMBOL (c)->name; | |
571 | if (((ptr - echobuf) + name->size + 4) > sizeof echobuf) | |
572 | return; | |
573 | bcopy (name->data, ptr, name->size); | |
574 | ptr += name->size; | |
575 | } | |
576 | ||
7e85b935 | 577 | if (echoptr == echobuf && EQ (c, Vhelp_char)) |
284f4730 JB |
578 | { |
579 | strcpy (ptr, " (Type ? for further options)"); | |
580 | ptr += strlen (ptr); | |
581 | } | |
582 | ||
583 | *ptr = 0; | |
584 | echoptr = ptr; | |
585 | ||
586 | echo (); | |
587 | } | |
588 | } | |
589 | ||
590 | /* Temporarily add a dash to the end of the echo string if it's not | |
591 | empty, so that it serves as a mini-prompt for the very next character. */ | |
592 | ||
593 | echo_dash () | |
594 | { | |
595 | if (!immediate_echo && echoptr == echobuf) | |
596 | return; | |
7a80a6f6 | 597 | /* Do nothing if we just printed a prompt. */ |
7d637a0d | 598 | if (echo_after_prompt == echoptr - echobuf) |
7a80a6f6 | 599 | return; |
4bafa972 JB |
600 | /* Do nothing if not echoing at all. */ |
601 | if (echoptr == 0) | |
602 | return; | |
284f4730 JB |
603 | |
604 | /* Put a dash at the end of the buffer temporarily, | |
605 | but make it go away when the next character is added. */ | |
606 | echoptr[0] = '-'; | |
607 | echoptr[1] = 0; | |
608 | ||
609 | echo (); | |
610 | } | |
611 | ||
612 | /* Display the current echo string, and begin echoing if not already | |
613 | doing so. */ | |
614 | ||
615 | echo () | |
616 | { | |
617 | if (!immediate_echo) | |
618 | { | |
619 | int i; | |
620 | immediate_echo = 1; | |
621 | ||
622 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
623 | { |
624 | Lisp_Object c; | |
625 | c = XVECTOR (this_command_keys)->contents[i]; | |
626 | if (! (EVENT_HAS_PARAMETERS (c) | |
627 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
628 | echo_char (c); | |
629 | } | |
284f4730 JB |
630 | echo_dash (); |
631 | } | |
632 | ||
633 | echoing = 1; | |
634 | message1 (echobuf); | |
635 | echoing = 0; | |
636 | ||
637 | if (waiting_for_input && !NILP (Vquit_flag)) | |
638 | quit_throw_to_read_char (); | |
639 | } | |
640 | ||
641 | /* Turn off echoing, for the start of a new command. */ | |
642 | ||
643 | cancel_echoing () | |
644 | { | |
645 | immediate_echo = 0; | |
646 | echoptr = echobuf; | |
7a80a6f6 | 647 | echo_after_prompt = -1; |
284f4730 JB |
648 | } |
649 | ||
650 | /* Return the length of the current echo string. */ | |
651 | ||
652 | static int | |
653 | echo_length () | |
654 | { | |
655 | return echoptr - echobuf; | |
656 | } | |
657 | ||
658 | /* Truncate the current echo message to its first LEN chars. | |
659 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 660 | switches frames while entering a key sequence. */ |
284f4730 JB |
661 | |
662 | static void | |
663 | echo_truncate (len) | |
664 | int len; | |
665 | { | |
666 | echobuf[len] = '\0'; | |
0a7f1fc0 | 667 | echoptr = echobuf + len; |
40932d1a | 668 | truncate_echo_area (len); |
284f4730 JB |
669 | } |
670 | ||
671 | \f | |
672 | /* Functions for manipulating this_command_keys. */ | |
673 | static void | |
674 | add_command_key (key) | |
675 | Lisp_Object key; | |
676 | { | |
6569cc8d JB |
677 | int size = XVECTOR (this_command_keys)->size; |
678 | ||
679 | if (this_command_key_count >= size) | |
284f4730 | 680 | { |
9b8eb840 | 681 | Lisp_Object new_keys; |
6569cc8d | 682 | |
9b8eb840 | 683 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
684 | bcopy (XVECTOR (this_command_keys)->contents, |
685 | XVECTOR (new_keys)->contents, | |
8f805655 | 686 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
687 | |
688 | this_command_keys = new_keys; | |
284f4730 | 689 | } |
6569cc8d JB |
690 | |
691 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
692 | } |
693 | \f | |
694 | Lisp_Object | |
695 | recursive_edit_1 () | |
696 | { | |
697 | int count = specpdl_ptr - specpdl; | |
698 | Lisp_Object val; | |
699 | ||
700 | if (command_loop_level > 0) | |
701 | { | |
702 | specbind (Qstandard_output, Qt); | |
703 | specbind (Qstandard_input, Qt); | |
704 | } | |
705 | ||
706 | val = command_loop (); | |
707 | if (EQ (val, Qt)) | |
708 | Fsignal (Qquit, Qnil); | |
709 | ||
cb5df6ae | 710 | return unbind_to (count, Qnil); |
284f4730 JB |
711 | } |
712 | ||
713 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 714 | |
284f4730 JB |
715 | record_auto_save () |
716 | { | |
51172b6d | 717 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 718 | } |
5846638c RS |
719 | |
720 | /* Make an auto save happen as soon as possible at command level. */ | |
721 | ||
722 | force_auto_save_soon () | |
723 | { | |
724 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
725 | |
726 | record_asynch_buffer_change (); | |
5846638c | 727 | } |
284f4730 | 728 | \f |
284f4730 JB |
729 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
730 | "Invoke the editor command loop recursively.\n\ | |
731 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
732 | that tells this function to return.\n\ | |
733 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
734 | This function is called by the editor initialization to begin editing.") | |
735 | () | |
736 | { | |
737 | int count = specpdl_ptr - specpdl; | |
738 | Lisp_Object val; | |
739 | ||
740 | command_loop_level++; | |
741 | update_mode_lines = 1; | |
742 | ||
743 | record_unwind_protect (recursive_edit_unwind, | |
744 | (command_loop_level | |
745 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
746 | ? Fcurrent_buffer () | |
747 | : Qnil); | |
748 | recursive_edit_1 (); | |
749 | return unbind_to (count, Qnil); | |
750 | } | |
751 | ||
752 | Lisp_Object | |
753 | recursive_edit_unwind (buffer) | |
754 | Lisp_Object buffer; | |
755 | { | |
756 | if (!NILP (buffer)) | |
757 | Fset_buffer (buffer); | |
758 | ||
759 | command_loop_level--; | |
760 | update_mode_lines = 1; | |
761 | return Qnil; | |
762 | } | |
763 | \f | |
764 | Lisp_Object | |
765 | cmd_error (data) | |
766 | Lisp_Object data; | |
a1341f75 RS |
767 | { |
768 | Vstandard_output = Qt; | |
769 | Vstandard_input = Qt; | |
770 | Vexecuting_macro = Qnil; | |
771 | cmd_error_internal (data, 0); | |
772 | ||
773 | Vquit_flag = Qnil; | |
774 | ||
775 | Vinhibit_quit = Qnil; | |
776 | ||
777 | return make_number (0); | |
778 | } | |
779 | ||
780 | cmd_error_internal (data, context) | |
781 | Lisp_Object data; | |
782 | char *context; | |
284f4730 JB |
783 | { |
784 | Lisp_Object errmsg, tail, errname, file_error; | |
785 | Lisp_Object stream; | |
786 | struct gcpro gcpro1; | |
787 | int i; | |
788 | ||
789 | Vquit_flag = Qnil; | |
790 | Vinhibit_quit = Qt; | |
284f4730 JB |
791 | echo_area_glyphs = 0; |
792 | ||
ff11dfa1 | 793 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
794 | yet, or we're not interactive, it's best to dump this message out |
795 | to stderr and exit. */ | |
ff11dfa1 | 796 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
797 | || noninteractive) |
798 | stream = Qexternal_debugging_output; | |
799 | else | |
800 | { | |
801 | Fdiscard_input (); | |
802 | bitch_at_user (); | |
803 | stream = Qt; | |
804 | } | |
805 | ||
a1341f75 RS |
806 | if (context != 0) |
807 | write_string_1 (context, -1, stream); | |
808 | ||
284f4730 JB |
809 | errname = Fcar (data); |
810 | ||
811 | if (EQ (errname, Qerror)) | |
812 | { | |
813 | data = Fcdr (data); | |
814 | if (!CONSP (data)) data = Qnil; | |
815 | errmsg = Fcar (data); | |
816 | file_error = Qnil; | |
817 | } | |
818 | else | |
819 | { | |
820 | errmsg = Fget (errname, Qerror_message); | |
821 | file_error = Fmemq (Qfile_error, | |
822 | Fget (errname, Qerror_conditions)); | |
823 | } | |
824 | ||
825 | /* Print an error message including the data items. | |
826 | This is done by printing it into a scratch buffer | |
827 | and then making a copy of the text in the buffer. */ | |
828 | ||
829 | if (!CONSP (data)) data = Qnil; | |
830 | tail = Fcdr (data); | |
831 | GCPRO1 (tail); | |
832 | ||
833 | /* For file-error, make error message by concatenating | |
834 | all the data items. They are all strings. */ | |
835 | if (!NILP (file_error) && !NILP (tail)) | |
836 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
837 | ||
8c18cbfb | 838 | if (STRINGP (errmsg)) |
284f4730 JB |
839 | Fprinc (errmsg, stream); |
840 | else | |
841 | write_string_1 ("peculiar error", -1, stream); | |
842 | ||
843 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
844 | { | |
845 | write_string_1 (i ? ", " : ": ", 2, stream); | |
846 | if (!NILP (file_error)) | |
847 | Fprinc (Fcar (tail), stream); | |
848 | else | |
849 | Fprin1 (Fcar (tail), stream); | |
850 | } | |
851 | UNGCPRO; | |
852 | ||
ff11dfa1 | 853 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 854 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 855 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
856 | || noninteractive) |
857 | { | |
858 | Fterpri (stream); | |
859 | Fkill_emacs (make_number (-1)); | |
860 | } | |
284f4730 JB |
861 | } |
862 | \f | |
863 | Lisp_Object command_loop_1 (); | |
864 | Lisp_Object command_loop_2 (); | |
865 | Lisp_Object top_level_1 (); | |
866 | ||
867 | /* Entry to editor-command-loop. | |
868 | This level has the catches for exiting/returning to editor command loop. | |
869 | It returns nil to exit recursive edit, t to abort it. */ | |
870 | ||
871 | Lisp_Object | |
872 | command_loop () | |
873 | { | |
874 | if (command_loop_level > 0 || minibuf_level > 0) | |
875 | { | |
876 | return internal_catch (Qexit, command_loop_2, Qnil); | |
877 | } | |
878 | else | |
879 | while (1) | |
880 | { | |
881 | internal_catch (Qtop_level, top_level_1, Qnil); | |
882 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
883 | ||
884 | /* End of file in -batch run causes exit here. */ | |
885 | if (noninteractive) | |
886 | Fkill_emacs (Qt); | |
887 | } | |
888 | } | |
889 | ||
890 | /* Here we catch errors in execution of commands within the | |
891 | editing loop, and reenter the editing loop. | |
892 | When there is an error, cmd_error runs and returns a non-nil | |
893 | value to us. A value of nil means that cmd_loop_1 itself | |
894 | returned due to end of file (or end of kbd macro). */ | |
895 | ||
896 | Lisp_Object | |
897 | command_loop_2 () | |
898 | { | |
899 | register Lisp_Object val; | |
900 | ||
901 | do | |
902 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
903 | while (!NILP (val)); | |
904 | ||
905 | return Qnil; | |
906 | } | |
907 | ||
908 | Lisp_Object | |
909 | top_level_2 () | |
910 | { | |
911 | return Feval (Vtop_level); | |
912 | } | |
913 | ||
914 | Lisp_Object | |
915 | top_level_1 () | |
916 | { | |
917 | /* On entry to the outer level, run the startup file */ | |
918 | if (!NILP (Vtop_level)) | |
919 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
920 | else if (!NILP (Vpurify_flag)) | |
921 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
922 | else | |
923 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
924 | return Qnil; | |
925 | } | |
926 | ||
927 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
928 | "Exit all recursive editing levels.") | |
929 | () | |
930 | { | |
931 | Fthrow (Qtop_level, Qnil); | |
932 | } | |
933 | ||
934 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
935 | "Exit from the innermost recursive edit or minibuffer.") | |
936 | () | |
937 | { | |
938 | if (command_loop_level > 0 || minibuf_level > 0) | |
939 | Fthrow (Qexit, Qnil); | |
940 | ||
941 | error ("No recursive edit is in progress"); | |
942 | } | |
943 | ||
944 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
945 | "Abort the command that requested this recursive edit or minibuffer input.") | |
946 | () | |
947 | { | |
948 | if (command_loop_level > 0 || minibuf_level > 0) | |
949 | Fthrow (Qexit, Qt); | |
950 | ||
951 | error ("No recursive edit is in progress"); | |
952 | } | |
953 | \f | |
954 | /* This is the actual command reading loop, | |
955 | sans error-handling encapsulation. */ | |
956 | ||
957 | Lisp_Object Fcommand_execute (); | |
958 | static int read_key_sequence (); | |
1c9784c9 | 959 | static void safe_run_hooks (); |
284f4730 JB |
960 | |
961 | Lisp_Object | |
962 | command_loop_1 () | |
963 | { | |
48e416d4 | 964 | Lisp_Object cmd, tem; |
284f4730 JB |
965 | int lose; |
966 | int nonundocount; | |
967 | Lisp_Object keybuf[30]; | |
968 | int i; | |
969 | int no_redisplay; | |
970 | int no_direct; | |
86e5706b RS |
971 | int prev_modiff; |
972 | struct buffer *prev_buffer; | |
284f4730 JB |
973 | |
974 | Vprefix_arg = Qnil; | |
86e5706b | 975 | Vdeactivate_mark = Qnil; |
284f4730 JB |
976 | waiting_for_input = 0; |
977 | cancel_echoing (); | |
978 | ||
284f4730 JB |
979 | nonundocount = 0; |
980 | no_redisplay = 0; | |
981 | this_command_key_count = 0; | |
982 | ||
a612e298 RS |
983 | /* Make sure this hook runs after commands that get errors and |
984 | throw to top level. */ | |
a98ea3f9 RS |
985 | /* Note that the value cell will never directly contain nil |
986 | if the symbol is a local variable. */ | |
987 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
988 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 989 | |
8a792f3a RS |
990 | if (!NILP (Vdeferred_action_list)) |
991 | call0 (Vdeferred_action_function); | |
992 | ||
51d5a2c9 RS |
993 | /* Do this after running Vpost_command_hook, for consistency. */ |
994 | last_command = this_command; | |
995 | ||
284f4730 JB |
996 | while (1) |
997 | { | |
998 | /* Install chars successfully executed in kbd macro. */ | |
999 | ||
1000 | if (defining_kbd_macro && NILP (Vprefix_arg)) | |
1001 | finalize_kbd_macro_chars (); | |
1002 | ||
1003 | /* Make sure the current window's buffer is selected. */ | |
1004 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
1005 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
1006 | ||
1007 | /* Display any malloc warning that just came out. Use while because | |
1008 | displaying one warning can cause another. */ | |
1009 | ||
1010 | while (pending_malloc_warning) | |
1011 | display_malloc_warning (); | |
1012 | ||
1013 | no_direct = 0; | |
1014 | ||
86e5706b RS |
1015 | Vdeactivate_mark = Qnil; |
1016 | ||
284f4730 | 1017 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 1018 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
1019 | |
1020 | if (minibuf_level && echo_area_glyphs) | |
1021 | { | |
f1bed6d8 RS |
1022 | /* Bind inhibit-quit to t so that C-g gets read in |
1023 | rather than quitting back to the minibuffer. */ | |
1024 | int count = specpdl_ptr - specpdl; | |
1025 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1026 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1027 | unbind_to (count, Qnil); |
f1bed6d8 | 1028 | |
284f4730 JB |
1029 | echo_area_glyphs = 0; |
1030 | no_direct = 1; | |
1031 | if (!NILP (Vquit_flag)) | |
1032 | { | |
1033 | Vquit_flag = Qnil; | |
24597608 | 1034 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1035 | } |
1036 | } | |
1037 | ||
1038 | #ifdef C_ALLOCA | |
1039 | alloca (0); /* Cause a garbage collection now */ | |
1040 | /* Since we can free the most stuff here. */ | |
1041 | #endif /* C_ALLOCA */ | |
1042 | ||
8f805655 | 1043 | #if 0 |
ff11dfa1 | 1044 | #ifdef MULTI_FRAME |
8f805655 JB |
1045 | /* Select the frame that the last event came from. Usually, |
1046 | switch-frame events will take care of this, but if some lisp | |
1047 | code swallows a switch-frame event, we'll fix things up here. | |
1048 | Is this a good idea? */ | |
8c18cbfb | 1049 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1050 | && XFRAME (internal_last_event_frame) != selected_frame) |
1051 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1052 | #endif |
284f4730 | 1053 | #endif |
48e416d4 RS |
1054 | /* If it has changed current-menubar from previous value, |
1055 | really recompute the menubar from the value. */ | |
a646e520 RS |
1056 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1057 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1058 | call0 (Qrecompute_lucid_menubar); |
1059 | ||
8f805655 | 1060 | /* Read next key sequence; i gets its length. */ |
84d91fda | 1061 | i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), Qnil); |
8f805655 JB |
1062 | |
1063 | ++num_input_keys; | |
1064 | ||
284f4730 JB |
1065 | /* Now we have read a key sequence of length I, |
1066 | or else I is 0 and we found end of file. */ | |
1067 | ||
1068 | if (i == 0) /* End of file -- happens only in */ | |
1069 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1070 | /* -1 means read_key_sequence got a menu that was rejected. |
1071 | Just loop around and read another command. */ | |
1072 | if (i == -1) | |
1073 | { | |
1074 | cancel_echoing (); | |
1075 | this_command_key_count = 0; | |
1076 | continue; | |
1077 | } | |
284f4730 | 1078 | |
284f4730 JB |
1079 | last_command_char = keybuf[i - 1]; |
1080 | ||
75c0b143 RS |
1081 | /* If the previous command tried to force a specific window-start, |
1082 | forget about that, in case this command moves point far away | |
1083 | from that position. */ | |
1084 | XWINDOW (selected_window)->force_start = Qnil; | |
1085 | ||
284f4730 JB |
1086 | cmd = read_key_sequence_cmd; |
1087 | if (!NILP (Vexecuting_macro)) | |
1088 | { | |
1089 | if (!NILP (Vquit_flag)) | |
1090 | { | |
1091 | Vexecuting_macro = Qt; | |
1092 | QUIT; /* Make some noise. */ | |
1093 | /* Will return since macro now empty. */ | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1098 | cases identified below that set no_redisplay to 1. |
1099 | (actually, there's currently no way to prevent the redisplay, | |
1100 | and no_redisplay is ignored. | |
1101 | Perhaps someday we will really implement it. */ | |
284f4730 JB |
1102 | no_redisplay = 0; |
1103 | ||
86e5706b RS |
1104 | prev_buffer = current_buffer; |
1105 | prev_modiff = MODIFF; | |
8746da95 | 1106 | last_point_position = PT; |
18cd2eeb | 1107 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1108 | |
284f4730 JB |
1109 | /* Execute the command. */ |
1110 | ||
86e5706b | 1111 | this_command = cmd; |
a98ea3f9 RS |
1112 | /* Note that the value cell will never directly contain nil |
1113 | if the symbol is a local variable. */ | |
1114 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1115 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1116 | |
258bf746 | 1117 | if (NILP (this_command)) |
284f4730 JB |
1118 | { |
1119 | /* nil means key is undefined. */ | |
1120 | bitch_at_user (); | |
1121 | defining_kbd_macro = 0; | |
1122 | update_mode_lines = 1; | |
1123 | Vprefix_arg = Qnil; | |
86e5706b | 1124 | |
284f4730 JB |
1125 | } |
1126 | else | |
1127 | { | |
284f4730 JB |
1128 | if (NILP (Vprefix_arg) && ! no_direct) |
1129 | { | |
1130 | /* Recognize some common commands in common situations and | |
1131 | do them directly. */ | |
8001d352 | 1132 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1133 | { |
1134 | struct Lisp_Vector *dp | |
1135 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1136 | lose = FETCH_CHAR (PT); |
1137 | SET_PT (PT + 1); | |
0f7a8fee | 1138 | if ((dp |
82ba47d7 | 1139 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1140 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1141 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1142 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1143 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1144 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1145 | >= MODIFF) | |
1146 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1147 | == PT - 1) |
284f4730 JB |
1148 | && !windows_or_buffers_changed |
1149 | && EQ (current_buffer->selective_display, Qnil) | |
1150 | && !detect_input_pending () | |
1151 | && NILP (Vexecuting_macro)) | |
1152 | no_redisplay = direct_output_forward_char (1); | |
1153 | goto directly_done; | |
1154 | } | |
8001d352 | 1155 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1156 | { |
1157 | struct Lisp_Vector *dp | |
1158 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1159 | SET_PT (PT - 1); |
1160 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1161 | if ((dp |
ca873d73 | 1162 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1163 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1164 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1165 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1166 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1167 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1168 | >= MODIFF) | |
1169 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1170 | == PT + 1) |
284f4730 JB |
1171 | && !windows_or_buffers_changed |
1172 | && EQ (current_buffer->selective_display, Qnil) | |
1173 | && !detect_input_pending () | |
1174 | && NILP (Vexecuting_macro)) | |
1175 | no_redisplay = direct_output_forward_char (-1); | |
1176 | goto directly_done; | |
1177 | } | |
258bf746 | 1178 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1179 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1180 | && INTEGERP (last_command_char)) |
284f4730 JB |
1181 | { |
1182 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1183 | int value; |
284f4730 | 1184 | |
fc9cce4e RS |
1185 | if (NILP (Vexecuting_macro) |
1186 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1187 | { |
1188 | if (!nonundocount || nonundocount >= 20) | |
1189 | { | |
1190 | Fundo_boundary (); | |
1191 | nonundocount = 0; | |
1192 | } | |
1193 | nonundocount++; | |
1194 | } | |
fc9cce4e RS |
1195 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1196 | < MODIFF) | |
1197 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1198 | != PT) | |
1199 | || MODIFF <= current_buffer->save_modified | |
1200 | || windows_or_buffers_changed | |
1201 | || !EQ (current_buffer->selective_display, Qnil) | |
1202 | || detect_input_pending () | |
1203 | || !NILP (Vexecuting_macro)); | |
1204 | value = internal_self_insert (c, 0); | |
1205 | if (value) | |
1206 | lose = 1; | |
1207 | if (value == 2) | |
1208 | nonundocount = 0; | |
1209 | ||
1210 | if (!lose | |
1211 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1212 | { |
1213 | struct Lisp_Vector *dp | |
1214 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1215 | int lose = c; |
284f4730 | 1216 | |
0f7a8fee JB |
1217 | if (dp) |
1218 | { | |
9b8eb840 | 1219 | Lisp_Object obj; |
0f7a8fee | 1220 | |
9b8eb840 | 1221 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1222 | if (NILP (obj)) |
8e91f441 RS |
1223 | { |
1224 | /* Do it only for char codes | |
1225 | that by default display as themselves. */ | |
1226 | if (lose >= 0x20 && lose <= 0x7e) | |
1227 | no_redisplay = direct_output_for_insert (lose); | |
1228 | } | |
8c18cbfb | 1229 | else if (VECTORP (obj) |
054c8675 | 1230 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1231 | && (obj = XVECTOR (obj)->contents[0], |
1232 | INTEGERP (obj)) | |
054c8675 RS |
1233 | /* Insist face not specified in glyph. */ |
1234 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1235 | no_redisplay |
1236 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1237 | } |
1238 | else | |
1239 | { | |
1240 | if (lose >= 0x20 && lose <= 0x7e) | |
1241 | no_redisplay = direct_output_for_insert (lose); | |
1242 | } | |
284f4730 JB |
1243 | } |
1244 | goto directly_done; | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | /* Here for a command that isn't executed directly */ | |
1249 | ||
1250 | nonundocount = 0; | |
1251 | if (NILP (Vprefix_arg)) | |
1252 | Fundo_boundary (); | |
258bf746 | 1253 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1254 | |
284f4730 | 1255 | } |
a764a753 | 1256 | directly_done: ; |
284f4730 | 1257 | |
a98ea3f9 RS |
1258 | /* Note that the value cell will never directly contain nil |
1259 | if the symbol is a local variable. */ | |
1260 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1261 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1262 | |
8a792f3a RS |
1263 | if (!NILP (Vdeferred_action_list)) |
1264 | call0 (Vdeferred_action_function); | |
1265 | ||
284f4730 JB |
1266 | /* If there is a prefix argument, |
1267 | 1) We don't want last_command to be ``universal-argument'' | |
1268 | (that would be dumb), so don't set last_command, | |
1269 | 2) we want to leave echoing on so that the prefix will be | |
1270 | echoed as part of this key sequence, so don't call | |
1271 | cancel_echoing, and | |
1272 | 3) we want to leave this_command_key_count non-zero, so that | |
1273 | read_char will realize that it is re-reading a character, and | |
1274 | not echo it a second time. */ | |
1275 | if (NILP (Vprefix_arg)) | |
1276 | { | |
1277 | last_command = this_command; | |
1278 | cancel_echoing (); | |
1279 | this_command_key_count = 0; | |
1280 | } | |
86e5706b | 1281 | |
88ce066e | 1282 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1283 | { |
1284 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1285 | { | |
1286 | current_buffer->mark_active = Qnil; | |
1287 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1288 | } | |
1289 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1290 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1291 | } | |
284f4730 JB |
1292 | } |
1293 | } | |
1c9784c9 KH |
1294 | |
1295 | /* If we get an error while running the hook, cause the hook variable | |
1296 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1297 | to mysteriously evaporate. */ | |
1298 | static void | |
1299 | safe_run_hooks (hook) | |
a98ea3f9 | 1300 | Lisp_Object hook; |
1c9784c9 | 1301 | { |
68553292 | 1302 | Lisp_Object value; |
1c9784c9 KH |
1303 | int count = specpdl_ptr - specpdl; |
1304 | specbind (Qinhibit_quit, Qt); | |
1305 | ||
a98ea3f9 RS |
1306 | /* We read and set the variable with functions, |
1307 | in case it's buffer-local. */ | |
68553292 | 1308 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1309 | Fset (hook, Qnil); |
1c9784c9 | 1310 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1311 | Fset (hook, value); |
1c9784c9 KH |
1312 | |
1313 | unbind_to (count, Qnil); | |
1314 | } | |
284f4730 JB |
1315 | \f |
1316 | /* Number of seconds between polling for input. */ | |
1317 | int polling_period; | |
1318 | ||
eb8c3be9 | 1319 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1320 | int poll_suppress_count; |
1321 | ||
36922b18 | 1322 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1323 | int polling_for_input; |
1324 | ||
36922b18 RS |
1325 | #ifdef POLL_FOR_INPUT |
1326 | ||
284f4730 JB |
1327 | /* Handle an alarm once each second and read pending input |
1328 | so as to handle a C-g if it comces in. */ | |
1329 | ||
1330 | SIGTYPE | |
1331 | input_poll_signal () | |
1332 | { | |
9ac0d9e0 JB |
1333 | if (interrupt_input_blocked == 0 |
1334 | && !waiting_for_input) | |
1335 | read_avail_input (0); | |
284f4730 JB |
1336 | signal (SIGALRM, input_poll_signal); |
1337 | alarm (polling_period); | |
1338 | } | |
1339 | ||
1340 | #endif | |
1341 | ||
1342 | /* Begin signals to poll for input, if they are appropriate. | |
1343 | This function is called unconditionally from various places. */ | |
1344 | ||
1345 | start_polling () | |
1346 | { | |
1347 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1348 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1349 | { |
1350 | poll_suppress_count--; | |
1351 | if (poll_suppress_count == 0) | |
1352 | { | |
1353 | signal (SIGALRM, input_poll_signal); | |
1354 | polling_for_input = 1; | |
1355 | alarm (polling_period); | |
1356 | } | |
1357 | } | |
1358 | #endif | |
1359 | } | |
1360 | ||
1d3195db RS |
1361 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1362 | ||
1363 | int | |
1364 | input_polling_used () | |
1365 | { | |
1366 | #ifdef POLL_FOR_INPUT | |
1367 | return read_socket_hook && !interrupt_input; | |
1368 | #else | |
1369 | return 0; | |
1370 | #endif | |
1371 | } | |
1372 | ||
284f4730 JB |
1373 | /* Turn off polling. */ |
1374 | ||
1375 | stop_polling () | |
1376 | { | |
1377 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1378 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1379 | { |
1380 | if (poll_suppress_count == 0) | |
1381 | { | |
1382 | polling_for_input = 0; | |
1383 | alarm (0); | |
1384 | } | |
1385 | poll_suppress_count++; | |
1386 | } | |
1387 | #endif | |
1388 | } | |
fe8aeef3 RS |
1389 | |
1390 | /* Set the value of poll_suppress_count to COUNT | |
1391 | and start or stop polling accordingly. */ | |
1392 | ||
1393 | void | |
1394 | set_poll_suppress_count (count) | |
1395 | int count; | |
1396 | { | |
1397 | #ifdef POLL_FOR_INPUT | |
1398 | if (count == 0 && poll_suppress_count != 0) | |
1399 | { | |
1400 | poll_suppress_count = 1; | |
1401 | start_polling (); | |
1402 | } | |
1403 | else if (count != 0 && poll_suppress_count == 0) | |
1404 | { | |
1405 | stop_polling (); | |
1406 | } | |
1407 | poll_suppress_count = count; | |
1408 | #endif | |
1409 | } | |
f4eef8b4 | 1410 | |
d0a57728 RS |
1411 | /* Bind polling_period to a value at least N. |
1412 | But don't decrease it. */ | |
1413 | ||
f4eef8b4 RS |
1414 | bind_polling_period (n) |
1415 | int n; | |
1416 | { | |
1417 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1418 | int new = polling_period; |
1419 | ||
1420 | if (n > new) | |
1421 | new = n; | |
1422 | ||
f4eef8b4 | 1423 | stop_polling (); |
d0a57728 RS |
1424 | specbind (Qpolling_period, make_number (new)); |
1425 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1426 | start_polling (); |
1427 | #endif | |
1428 | } | |
284f4730 | 1429 | \f |
faf5e407 JB |
1430 | /* Applying the control modifier to CHARACTER. */ |
1431 | int | |
1432 | make_ctrl_char (c) | |
1433 | int c; | |
1434 | { | |
d205953b JB |
1435 | /* Save the upper bits here. */ |
1436 | int upper = c & ~0177; | |
1437 | ||
1438 | c &= 0177; | |
1439 | ||
1440 | /* Everything in the columns containing the upper-case letters | |
1441 | denotes a control character. */ | |
1442 | if (c >= 0100 && c < 0140) | |
1443 | { | |
1444 | int oc = c; | |
1445 | c &= ~0140; | |
1446 | /* Set the shift modifier for a control char | |
1447 | made from a shifted letter. But only for letters! */ | |
1448 | if (oc >= 'A' && oc <= 'Z') | |
1449 | c |= shift_modifier; | |
1450 | } | |
1451 | ||
1452 | /* The lower-case letters denote control characters too. */ | |
1453 | else if (c >= 'a' && c <= 'z') | |
1454 | c &= ~0140; | |
1455 | ||
1456 | /* Include the bits for control and shift | |
1457 | only if the basic ASCII code can't indicate them. */ | |
1458 | else if (c >= ' ') | |
1459 | c |= ctrl_modifier; | |
1460 | ||
1461 | /* Replace the high bits. */ | |
1462 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1463 | |
1464 | return c; | |
1465 | } | |
1466 | ||
1467 | ||
1468 | \f | |
284f4730 JB |
1469 | /* Input of single characters from keyboard */ |
1470 | ||
1471 | Lisp_Object print_help (); | |
1472 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1473 | static void record_char (); |
284f4730 JB |
1474 | |
1475 | /* read a character from the keyboard; call the redisplay if needed */ | |
1476 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1477 | -1 means do not do redisplay, but do do autosaving. | |
1478 | 1 means do both. */ | |
1479 | ||
7d6de002 RS |
1480 | /* The arguments MAPS and NMAPS are for menu prompting. |
1481 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1482 | ||
1483 | PREV_EVENT is the previous input event, or nil if we are reading | |
1484 | the first event of a key sequence. | |
1485 | ||
6569cc8d JB |
1486 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1487 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1488 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1489 | ||
1490 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1491 | |
284f4730 | 1492 | Lisp_Object |
7d6de002 | 1493 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1494 | int commandflag; |
7d6de002 RS |
1495 | int nmaps; |
1496 | Lisp_Object *maps; | |
1497 | Lisp_Object prev_event; | |
1498 | int *used_mouse_menu; | |
284f4730 JB |
1499 | { |
1500 | register Lisp_Object c; | |
1501 | int count; | |
1502 | jmp_buf save_jump; | |
a1341f75 | 1503 | int key_already_recorded = 0; |
e4fe371d RS |
1504 | Lisp_Object also_record; |
1505 | also_record = Qnil; | |
284f4730 | 1506 | |
24597608 | 1507 | if (CONSP (Vunread_command_events)) |
284f4730 | 1508 | { |
24597608 RS |
1509 | c = XCONS (Vunread_command_events)->car; |
1510 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1511 | |
284f4730 JB |
1512 | if (this_command_key_count == 0) |
1513 | goto reread_first; | |
1514 | else | |
1515 | goto reread; | |
1516 | } | |
1517 | ||
86e5706b RS |
1518 | if (unread_command_char != -1) |
1519 | { | |
18cd2eeb | 1520 | XSETINT (c, unread_command_char); |
86e5706b RS |
1521 | unread_command_char = -1; |
1522 | ||
1523 | if (this_command_key_count == 0) | |
1524 | goto reread_first; | |
1525 | else | |
1526 | goto reread; | |
1527 | } | |
1528 | ||
284f4730 JB |
1529 | if (!NILP (Vexecuting_macro)) |
1530 | { | |
07d2b8de | 1531 | #ifdef MULTI_FRAME |
fce33686 JB |
1532 | /* We set this to Qmacro; since that's not a frame, nobody will |
1533 | try to switch frames on us, and the selected window will | |
1534 | remain unchanged. | |
1535 | ||
1536 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1537 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1538 | real event came from. Normally, a switch-frame event selects |
1539 | internal_last_event_frame after each command is read, but | |
1540 | events read from a macro should never cause a new frame to be | |
1541 | selected. */ | |
1542 | Vlast_event_frame = internal_last_event_frame = Qmacro; | |
07d2b8de | 1543 | #endif |
fce33686 | 1544 | |
663258f2 JB |
1545 | /* Exit the macro if we are at the end. |
1546 | Also, some things replace the macro with t | |
1547 | to force an early exit. */ | |
1548 | if (EQ (Vexecuting_macro, Qt) | |
1549 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1550 | { |
18cd2eeb | 1551 | XSETINT (c, -1); |
284f4730 JB |
1552 | return c; |
1553 | } | |
1554 | ||
1555 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
8c18cbfb | 1556 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1557 | && (XINT (c) & 0x80)) |
bb9e9bed | 1558 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1559 | |
284f4730 JB |
1560 | executing_macro_index++; |
1561 | ||
1562 | goto from_macro; | |
1563 | } | |
1564 | ||
cd21b839 JB |
1565 | if (!NILP (unread_switch_frame)) |
1566 | { | |
1567 | c = unread_switch_frame; | |
1568 | unread_switch_frame = Qnil; | |
1569 | ||
1570 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1571 | again, so we go to reread_first, rather than reread. */ |
1572 | goto reread_first; | |
cd21b839 JB |
1573 | } |
1574 | ||
3f9929bf RS |
1575 | /* Don't bother updating menu bars while doing mouse tracking. |
1576 | We get events very rapidly then, and the menu bar won't be changing. | |
1577 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1578 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1579 | prepare_menu_bars (); |
1580 | ||
284f4730 | 1581 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1582 | save_getcjmp (save_jump); |
284f4730 JB |
1583 | |
1584 | stop_polling (); | |
1585 | ||
1586 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1587 | redisplay (); | |
1588 | ||
1589 | if (_setjmp (getcjmp)) | |
1590 | { | |
18cd2eeb | 1591 | XSETINT (c, quit_char); |
07d2b8de | 1592 | #ifdef MULTI_FRAME |
18cd2eeb | 1593 | XSETFRAME (internal_last_event_frame, selected_frame); |
3c370943 | 1594 | Vlast_event_frame = internal_last_event_frame; |
07d2b8de | 1595 | #endif |
04904c29 RS |
1596 | /* If we report the quit char as an event, |
1597 | don't do so more than once. */ | |
1598 | if (!NILP (Vinhibit_quit)) | |
1599 | Vquit_flag = Qnil; | |
284f4730 | 1600 | |
284f4730 JB |
1601 | goto non_reread; |
1602 | } | |
1603 | ||
1604 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1605 | if (echo_area_glyphs && *echo_area_glyphs && echo_area_glyphs != echobuf) | |
1606 | cancel_echoing (); | |
1607 | else | |
1608 | /* If already echoing, continue. */ | |
1609 | echo_dash (); | |
1610 | ||
8150596a RS |
1611 | /* Try reading a character via menu prompting in the minibuf. |
1612 | Try this before the sit-for, because the sit-for | |
1613 | would do the wrong thing if we are supposed to do | |
1614 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1615 | after a mouse event so don't try a minibuf menu. */ | |
1616 | c = Qnil; | |
24597608 RS |
1617 | if (nmaps > 0 && INTERACTIVE |
1618 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1619 | /* Don't bring up a menu if we already have another event. */ | |
1620 | && NILP (Vunread_command_events) | |
1621 | && unread_command_char < 0 | |
b8556aee | 1622 | && !detect_input_pending ()) |
8150596a RS |
1623 | { |
1624 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1625 | if (! NILP (c)) |
a1341f75 RS |
1626 | { |
1627 | key_already_recorded = 1; | |
1628 | goto non_reread; | |
1629 | } | |
8150596a RS |
1630 | } |
1631 | ||
284f4730 JB |
1632 | /* If in middle of key sequence and minibuffer not active, |
1633 | start echoing if enough time elapses. */ | |
1634 | if (minibuf_level == 0 && !immediate_echo && this_command_key_count > 0 | |
27203ead | 1635 | && ! noninteractive |
284f4730 JB |
1636 | && echo_keystrokes > 0 |
1637 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1638 | { | |
1639 | Lisp_Object tem0; | |
1640 | ||
7d6de002 RS |
1641 | /* After a mouse event, start echoing right away. |
1642 | This is because we are probably about to display a menu, | |
1643 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1644 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1645 | echo (); |
7d6de002 RS |
1646 | else |
1647 | { | |
1648 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1649 | if (EQ (tem0, Qt)) | |
1650 | echo (); | |
1651 | } | |
284f4730 JB |
1652 | } |
1653 | ||
1654 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1655 | ||
1656 | if (commandflag != 0 | |
1657 | && auto_save_interval > 0 | |
51172b6d | 1658 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1659 | && !detect_input_pending ()) |
1660 | { | |
1661 | jmp_buf temp; | |
1662 | save_getcjmp (temp); | |
1663 | Fdo_auto_save (Qnil, Qnil); | |
1664 | restore_getcjmp (temp); | |
1665 | } | |
1666 | ||
8150596a | 1667 | /* Try reading using an X menu. |
24597608 RS |
1668 | This is never confused with reading using the minibuf |
1669 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1670 | does not pass on any keymaps. */ | |
1671 | if (nmaps > 0 && INTERACTIVE | |
1672 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1673 | /* Don't bring up a menu if we already have another event. */ | |
1674 | && NILP (Vunread_command_events) | |
b8556aee | 1675 | && unread_command_char < 0) |
8150596a | 1676 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1677 | |
284f4730 JB |
1678 | /* Slow down auto saves logarithmically in size of current buffer, |
1679 | and garbage collect while we're at it. */ | |
26c1639e | 1680 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1681 | { |
1682 | int delay_level, buffer_size; | |
1683 | ||
1684 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1685 | last_non_minibuf_size = Z - BEG; | |
1686 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1687 | delay_level = 0; | |
1688 | while (buffer_size > 64) | |
1689 | delay_level++, buffer_size -= buffer_size >> 2; | |
1690 | if (delay_level < 4) delay_level = 4; | |
1691 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1692 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1693 | ||
1694 | /* Auto save if enough time goes by without input. */ | |
1695 | if (commandflag != 0 | |
51172b6d | 1696 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1697 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1698 | && XINT (Vauto_save_timeout) > 0) |
1699 | { | |
1700 | Lisp_Object tem0; | |
1701 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1702 | tem0 = sit_for (delay, 0, 1, 1); | |
1703 | if (EQ (tem0, Qt)) | |
1704 | { | |
1705 | jmp_buf temp; | |
1706 | save_getcjmp (temp); | |
1707 | Fdo_auto_save (Qnil, Qnil); | |
1708 | restore_getcjmp (temp); | |
1709 | ||
1710 | /* If we have auto-saved and there is still no input | |
1711 | available, garbage collect if there has been enough | |
1712 | consing going on to make it worthwhile. */ | |
1713 | if (!detect_input_pending () | |
1714 | && consing_since_gc > gc_cons_threshold / 2) | |
7e85b935 RS |
1715 | { |
1716 | Fgarbage_collect (); | |
e9bf89a0 RS |
1717 | /* prepare_menu_bars isn't safe here, but it should |
1718 | also be unnecessary. */ | |
7e85b935 RS |
1719 | redisplay (); |
1720 | } | |
7d6de002 RS |
1721 | } |
1722 | } | |
1723 | } | |
284f4730 JB |
1724 | |
1725 | /* Actually read a character, waiting if necessary. */ | |
4eb4f926 | 1726 | while (NILP (c)) |
1e12dd87 RS |
1727 | { |
1728 | c = kbd_buffer_get_event (); | |
1729 | if (!NILP (c)) | |
1730 | break; | |
1731 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
cd72760c RS |
1732 | { |
1733 | prepare_menu_bars (); | |
1734 | redisplay (); | |
1735 | } | |
1e12dd87 | 1736 | } |
284f4730 | 1737 | |
284f4730 | 1738 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1739 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1740 | Fkill_emacs (make_number (1)); |
1741 | ||
8c18cbfb | 1742 | if (INTEGERP (c)) |
80645119 JB |
1743 | { |
1744 | /* Add in any extra modifiers, where appropriate. */ | |
1745 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1746 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1747 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1748 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1749 | |
1750 | /* Transfer any other modifier bits directly from | |
1751 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1752 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1753 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1754 | } |
9fa4395d | 1755 | |
284f4730 JB |
1756 | non_reread: |
1757 | ||
f76475ad | 1758 | restore_getcjmp (save_jump); |
284f4730 JB |
1759 | |
1760 | start_polling (); | |
1761 | ||
dfd11da7 RS |
1762 | /* Buffer switch events are only for internal wakeups |
1763 | so don't show them to the user. */ | |
8c18cbfb | 1764 | if (BUFFERP (c)) |
dfd11da7 RS |
1765 | return c; |
1766 | ||
a1341f75 RS |
1767 | if (key_already_recorded) |
1768 | return c; | |
1769 | ||
dfd11da7 RS |
1770 | /* Wipe the echo area. */ |
1771 | echo_area_glyphs = 0; | |
284f4730 JB |
1772 | |
1773 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1774 | if (INTEGERP (c)) |
284f4730 JB |
1775 | { |
1776 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1777 | if (XINT (c) == -1) |
284f4730 JB |
1778 | return c; |
1779 | ||
8c18cbfb | 1780 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
1781 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1782 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1783 | } |
1784 | ||
e4fe371d RS |
1785 | /* If this event is a mouse click in the menu bar, |
1786 | return just menu-bar for now. Modify the mouse click event | |
1787 | so we won't do this twice, then queue it up. */ | |
1788 | if (EVENT_HAS_PARAMETERS (c) | |
1789 | && CONSP (XCONS (c)->cdr) | |
1790 | && CONSP (EVENT_START (c)) | |
1791 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 1792 | { |
e4fe371d | 1793 | Lisp_Object posn; |
284f4730 | 1794 | |
e4fe371d RS |
1795 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
1796 | /* Handle menu-bar events: | |
1797 | insert the dummy prefix event `menu-bar'. */ | |
1798 | if (EQ (posn, Qmenu_bar)) | |
1799 | { | |
1800 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
1801 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 1802 | |
e4fe371d RS |
1803 | also_record = c; |
1804 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
1805 | c = posn; | |
284f4730 | 1806 | } |
284f4730 JB |
1807 | } |
1808 | ||
e4fe371d RS |
1809 | record_char (c); |
1810 | if (! NILP (also_record)) | |
1811 | record_char (also_record); | |
51172b6d | 1812 | |
284f4730 JB |
1813 | from_macro: |
1814 | reread_first: | |
284f4730 | 1815 | |
b8556aee | 1816 | /* Don't echo mouse motion events. */ |
4bb994d1 JB |
1817 | if (! (EVENT_HAS_PARAMETERS (c) |
1818 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
1819 | { |
1820 | echo_char (c); | |
1821 | if (! NILP (also_record)) | |
1822 | echo_char (also_record); | |
1823 | } | |
b8556aee | 1824 | |
db8c1663 | 1825 | /* Record this character as part of the current key. */ |
b8556aee | 1826 | add_command_key (c); |
e4fe371d RS |
1827 | if (! NILP (also_record)) |
1828 | add_command_key (also_record); | |
284f4730 JB |
1829 | |
1830 | /* Re-reading in the middle of a command */ | |
1831 | reread: | |
1832 | last_input_char = c; | |
1833 | num_input_chars++; | |
1834 | ||
1835 | /* Process the help character specially if enabled */ | |
7e85b935 | 1836 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1837 | { |
1838 | Lisp_Object tem0; | |
1839 | count = specpdl_ptr - specpdl; | |
1840 | ||
1841 | record_unwind_protect (Fset_window_configuration, | |
1842 | Fcurrent_window_configuration (Qnil)); | |
1843 | ||
1844 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 1845 | if (STRINGP (tem0)) |
284f4730 JB |
1846 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
1847 | ||
1848 | cancel_echoing (); | |
3cb81011 KH |
1849 | do |
1850 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1851 | while (BUFFERP (c)); |
ff11dfa1 | 1852 | /* Remove the help from the frame */ |
284f4730 | 1853 | unbind_to (count, Qnil); |
e9bf89a0 | 1854 | prepare_menu_bars (); |
284f4730 JB |
1855 | redisplay (); |
1856 | if (EQ (c, make_number (040))) | |
1857 | { | |
1858 | cancel_echoing (); | |
3cb81011 KH |
1859 | do |
1860 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1861 | while (BUFFERP (c)); |
284f4730 JB |
1862 | } |
1863 | } | |
1864 | ||
1865 | return c; | |
1866 | } | |
1867 | ||
e4fe371d RS |
1868 | /* Record the input event C in various ways. */ |
1869 | ||
1870 | static void | |
1871 | record_char (c) | |
1872 | Lisp_Object c; | |
1873 | { | |
1874 | total_keys++; | |
1875 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
1876 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
1877 | recent_keys_index = 0; | |
1878 | ||
1879 | /* Write c to the dribble file. If c is a lispy event, write | |
1880 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1881 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1882 | if (dribble) | |
1883 | { | |
1884 | if (INTEGERP (c)) | |
1885 | { | |
1886 | if (XUINT (c) < 0x100) | |
1887 | putc (XINT (c), dribble); | |
1888 | else | |
1889 | fprintf (dribble, " 0x%x", XUINT (c)); | |
1890 | } | |
1891 | else | |
1892 | { | |
1893 | Lisp_Object dribblee; | |
1894 | ||
1895 | /* If it's a structured event, take the event header. */ | |
1896 | dribblee = EVENT_HEAD (c); | |
1897 | ||
1898 | if (SYMBOLP (dribblee)) | |
1899 | { | |
1900 | putc ('<', dribble); | |
1901 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
1902 | XSYMBOL (dribblee)->name->size, | |
1903 | dribble); | |
1904 | putc ('>', dribble); | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | fflush (dribble); | |
1909 | } | |
1910 | ||
1911 | store_kbd_macro_char (c); | |
1912 | ||
1913 | num_nonmacro_input_chars++; | |
1914 | } | |
1915 | ||
284f4730 JB |
1916 | Lisp_Object |
1917 | print_help (object) | |
1918 | Lisp_Object object; | |
1919 | { | |
1920 | Fprinc (object, Qnil); | |
1921 | return Qnil; | |
1922 | } | |
1923 | ||
1924 | /* Copy out or in the info on where C-g should throw to. | |
1925 | This is used when running Lisp code from within get_char, | |
1926 | in case get_char is called recursively. | |
1927 | See read_process_output. */ | |
1928 | ||
1929 | save_getcjmp (temp) | |
1930 | jmp_buf temp; | |
1931 | { | |
1932 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1933 | } | |
1934 | ||
1935 | restore_getcjmp (temp) | |
1936 | jmp_buf temp; | |
1937 | { | |
1938 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1939 | } | |
1940 | ||
1941 | \f | |
2eb6bfbe RM |
1942 | #ifdef HAVE_MOUSE |
1943 | ||
284f4730 JB |
1944 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
1945 | of this function. */ | |
a9d77f1f | 1946 | |
284f4730 JB |
1947 | static Lisp_Object |
1948 | tracking_off (old_value) | |
1949 | Lisp_Object old_value; | |
1950 | { | |
1951 | if (! XFASTINT (old_value)) | |
1952 | { | |
a9d77f1f | 1953 | do_mouse_tracking = Qnil; |
284f4730 JB |
1954 | |
1955 | /* Redisplay may have been preempted because there was input | |
1956 | available, and it assumes it will be called again after the | |
1957 | input has been processed. If the only input available was | |
1958 | the sort that we have just disabled, then we need to call | |
1959 | redisplay. */ | |
1960 | if (!readable_events ()) | |
1961 | { | |
e9bf89a0 | 1962 | prepare_menu_bars (); |
284f4730 JB |
1963 | redisplay_preserve_echo_area (); |
1964 | get_input_pending (&input_pending); | |
1965 | } | |
1966 | } | |
1967 | } | |
1968 | ||
1969 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
1970 | "Evaluate BODY with mouse movement events enabled.\n\ |
1971 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
1972 | you can read with `read-event'.\n\ | |
1973 | Normally, mouse motion is ignored.") | |
284f4730 JB |
1974 | (args) |
1975 | Lisp_Object args; | |
1976 | { | |
1977 | int count = specpdl_ptr - specpdl; | |
1978 | Lisp_Object val; | |
1979 | ||
a9d77f1f | 1980 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 1981 | |
3f9929bf RS |
1982 | if (!input_pending && !detect_input_pending ()) |
1983 | prepare_menu_bars (); | |
1984 | ||
a9d77f1f | 1985 | XSETFRAME (do_mouse_tracking, selected_frame); |
284f4730 JB |
1986 | |
1987 | val = Fprogn (args); | |
1988 | return unbind_to (count, val); | |
1989 | } | |
2eb6bfbe RM |
1990 | |
1991 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
1992 | \f |
1993 | /* Low level keyboard/mouse input. | |
1994 | kbd_buffer_store_event places events in kbd_buffer, and | |
1995 | kbd_buffer_get_event retrieves them. | |
1996 | mouse_moved indicates when the mouse has moved again, and | |
1997 | *mouse_position_hook provides the mouse position. */ | |
1998 | ||
1999 | /* Return true iff there are any events in the queue that read-char | |
2000 | would return. If this returns false, a read-char would block. */ | |
2001 | static int | |
2002 | readable_events () | |
2003 | { | |
2004 | return ! EVENT_QUEUES_EMPTY; | |
2005 | } | |
2006 | ||
2007 | /* Set this for debugging, to have a way to get out */ | |
2008 | int stop_character; | |
284f4730 JB |
2009 | |
2010 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
2011 | ||
2012 | void | |
2013 | kbd_buffer_store_event (event) | |
2014 | register struct input_event *event; | |
2015 | { | |
2016 | if (event->kind == no_event) | |
2017 | abort (); | |
2018 | ||
2019 | if (event->kind == ascii_keystroke) | |
2020 | { | |
e9bf89a0 | 2021 | register int c = event->code & 0377; |
284f4730 | 2022 | |
faf5e407 JB |
2023 | if (event->modifiers & ctrl_modifier) |
2024 | c = make_ctrl_char (c); | |
2025 | ||
9fd7d808 RS |
2026 | c |= (event->modifiers |
2027 | & (meta_modifier | alt_modifier | |
2028 | | hyper_modifier | super_modifier)); | |
2029 | ||
86e5706b | 2030 | if (c == quit_char) |
284f4730 | 2031 | { |
3e51c7b7 JB |
2032 | extern SIGTYPE interrupt_signal (); |
2033 | ||
07d2b8de | 2034 | #ifdef MULTI_FRAME |
284f4730 | 2035 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2036 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2037 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2038 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2039 | { |
9b8eb840 | 2040 | Lisp_Object focus; |
4bb994d1 | 2041 | |
9b8eb840 | 2042 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2043 | if (NILP (focus)) |
3c370943 | 2044 | internal_last_event_frame = event->frame_or_window; |
4bb994d1 | 2045 | else |
3c370943 JB |
2046 | internal_last_event_frame = focus; |
2047 | Vlast_event_frame = internal_last_event_frame; | |
4bb994d1 | 2048 | } |
07d2b8de | 2049 | #endif |
3e51c7b7 | 2050 | |
ffd56f97 | 2051 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2052 | interrupt_signal (); |
2053 | return; | |
2054 | } | |
2055 | ||
2056 | if (c && c == stop_character) | |
2057 | { | |
2058 | sys_suspend (); | |
2059 | return; | |
2060 | } | |
284f4730 JB |
2061 | } |
2062 | ||
2063 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) | |
2064 | kbd_store_ptr = kbd_buffer; | |
2065 | ||
2066 | /* Don't let the very last slot in the buffer become full, | |
2067 | since that would make the two pointers equal, | |
2068 | and that is indistinguishable from an empty buffer. | |
2069 | Discard the event if it would fill the last slot. */ | |
2070 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) | |
2071 | { | |
2072 | kbd_store_ptr->kind = event->kind; | |
27203ead RS |
2073 | if (event->kind == selection_request_event) |
2074 | { | |
2075 | /* We must not use the ordinary copying code for this case, | |
2076 | since `part' is an enum and copying it might not copy enough | |
2077 | in this case. */ | |
2078 | bcopy (event, kbd_store_ptr, sizeof (*event)); | |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | kbd_store_ptr->code = event->code; | |
2083 | kbd_store_ptr->part = event->part; | |
2084 | kbd_store_ptr->frame_or_window = event->frame_or_window; | |
2085 | kbd_store_ptr->modifiers = event->modifiers; | |
2086 | kbd_store_ptr->x = event->x; | |
2087 | kbd_store_ptr->y = event->y; | |
2088 | kbd_store_ptr->timestamp = event->timestamp; | |
2089 | } | |
7b4aedb9 JB |
2090 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2091 | - kbd_buffer] | |
2092 | = event->frame_or_window); | |
284f4730 JB |
2093 | |
2094 | kbd_store_ptr++; | |
2095 | } | |
2096 | } | |
a612e298 RS |
2097 | \f |
2098 | /* Read one event from the event buffer, waiting if necessary. | |
2099 | The value is a Lisp object representing the event. | |
2100 | The value is nil for an event that should be ignored, | |
2101 | or that was handled here. | |
2102 | We always read and discard one event. */ | |
284f4730 JB |
2103 | |
2104 | static Lisp_Object | |
2105 | kbd_buffer_get_event () | |
2106 | { | |
2107 | register int c; | |
2108 | Lisp_Object obj; | |
2109 | ||
2110 | if (noninteractive) | |
2111 | { | |
2112 | c = getchar (); | |
18cd2eeb | 2113 | XSETINT (obj, c); |
284f4730 JB |
2114 | return obj; |
2115 | } | |
2116 | ||
2117 | /* Wait until there is input available. */ | |
2118 | for (;;) | |
2119 | { | |
284f4730 JB |
2120 | if (!EVENT_QUEUES_EMPTY) |
2121 | break; | |
2122 | ||
2123 | /* If the quit flag is set, then read_char will return | |
2124 | quit_char, so that counts as "available input." */ | |
2125 | if (!NILP (Vquit_flag)) | |
2126 | quit_throw_to_read_char (); | |
2127 | ||
2128 | /* One way or another, wait until input is available; then, if | |
2129 | interrupt handlers have not read it, read it now. */ | |
2130 | ||
2131 | #ifdef OLDVMS | |
2132 | wait_for_kbd_input (); | |
2133 | #else | |
2134 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2135 | #ifdef SIGIO | |
2136 | gobble_input (0); | |
2137 | #endif /* SIGIO */ | |
2138 | if (EVENT_QUEUES_EMPTY) | |
2139 | { | |
f76475ad JB |
2140 | Lisp_Object minus_one; |
2141 | ||
18cd2eeb | 2142 | XSETINT (minus_one, -1); |
f76475ad | 2143 | wait_reading_process_input (0, 0, minus_one, 1); |
284f4730 JB |
2144 | |
2145 | if (!interrupt_input && EVENT_QUEUES_EMPTY) | |
bedae5a5 RS |
2146 | /* Pass 1 for EXPECT since we just waited to have input. */ |
2147 | read_avail_input (1); | |
284f4730 JB |
2148 | } |
2149 | #endif /* not VMS */ | |
2150 | } | |
2151 | ||
2152 | /* At this point, we know that there is a readable event available | |
2153 | somewhere. If the event queue is empty, then there must be a | |
2154 | mouse movement enabled and available. */ | |
2155 | if (kbd_fetch_ptr != kbd_store_ptr) | |
2156 | { | |
cd21b839 | 2157 | struct input_event *event; |
3e51c7b7 | 2158 | |
856bf263 | 2159 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
cd21b839 JB |
2160 | ? kbd_fetch_ptr |
2161 | : kbd_buffer); | |
3e51c7b7 | 2162 | |
cd21b839 | 2163 | last_event_timestamp = event->timestamp; |
cd21b839 | 2164 | |
4bb994d1 JB |
2165 | obj = Qnil; |
2166 | ||
48e416d4 | 2167 | /* These two kinds of events get special handling |
a612e298 RS |
2168 | and don't actually appear to the command loop. |
2169 | We return nil for them. */ | |
48e416d4 RS |
2170 | if (event->kind == selection_request_event) |
2171 | { | |
598a9fa7 | 2172 | #ifdef HAVE_X11 |
48e416d4 RS |
2173 | x_handle_selection_request (event); |
2174 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2175 | #else |
2176 | /* We're getting selection request events, but we don't have | |
2177 | a window system. */ | |
2178 | abort (); | |
2179 | #endif | |
48e416d4 RS |
2180 | } |
2181 | ||
1e12dd87 | 2182 | else if (event->kind == selection_clear_event) |
48e416d4 | 2183 | { |
598a9fa7 | 2184 | #ifdef HAVE_X11 |
48e416d4 RS |
2185 | x_handle_selection_clear (event); |
2186 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2187 | #else |
2188 | /* We're getting selection request events, but we don't have | |
2189 | a window system. */ | |
2190 | abort (); | |
2191 | #endif | |
48e416d4 | 2192 | } |
990acea3 RS |
2193 | #ifdef HAVE_X11 |
2194 | else if (event->kind == delete_window_event) | |
2195 | { | |
bbdc2092 RS |
2196 | /* Make an event (delete-frame (FRAME)). */ |
2197 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b KH |
2198 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
2199 | kbd_fetch_ptr = event + 1; | |
2200 | } | |
2201 | else if (event->kind == iconify_event) | |
2202 | { | |
2203 | /* Make an event (iconify-frame (FRAME)). */ | |
2204 | obj = Fcons (event->frame_or_window, Qnil); | |
2205 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
2206 | kbd_fetch_ptr = event + 1; | |
2207 | } | |
2208 | else if (event->kind == deiconify_event) | |
2209 | { | |
2210 | /* Make an event (make-frame-visible (FRAME)). */ | |
2211 | obj = Fcons (event->frame_or_window, Qnil); | |
2212 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
854f3a54 | 2213 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2214 | } |
2215 | #endif | |
f5e09c8b RS |
2216 | else if (event->kind == menu_bar_event) |
2217 | { | |
2218 | /* The event value is in the frame_or_window slot. */ | |
2219 | obj = event->frame_or_window; | |
2220 | kbd_fetch_ptr = event + 1; | |
2221 | } | |
a8015ab5 KH |
2222 | else if (event->kind == buffer_switch_event) |
2223 | { | |
2224 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2225 | XSETBUFFER (obj, current_buffer); |
a8015ab5 KH |
2226 | kbd_fetch_ptr = event + 1; |
2227 | } | |
a612e298 RS |
2228 | /* Just discard these, by returning nil. |
2229 | (They shouldn't be found in the buffer, | |
2230 | but on some machines it appears they do show up.) */ | |
2231 | else if (event->kind == no_event) | |
2232 | kbd_fetch_ptr = event + 1; | |
48e416d4 | 2233 | |
4bb994d1 JB |
2234 | /* If this event is on a different frame, return a switch-frame this |
2235 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2236 | else |
2237 | { | |
a6d53864 | 2238 | #ifdef MULTI_FRAME |
9b8eb840 | 2239 | Lisp_Object frame; |
1e12dd87 | 2240 | Lisp_Object focus; |
7b4aedb9 | 2241 | |
9b8eb840 | 2242 | frame = event->frame_or_window; |
8c18cbfb | 2243 | if (WINDOWP (frame)) |
1e12dd87 | 2244 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2245 | |
1e12dd87 RS |
2246 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2247 | if (! NILP (focus)) | |
2248 | frame = focus; | |
07d2b8de | 2249 | |
1e12dd87 RS |
2250 | if (! EQ (frame, internal_last_event_frame) |
2251 | && XFRAME (frame) != selected_frame) | |
2252 | obj = make_lispy_switch_frame (frame); | |
2253 | internal_last_event_frame = frame; | |
a6d53864 | 2254 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2255 | |
1e12dd87 RS |
2256 | /* If we didn't decide to make a switch-frame event, go ahead |
2257 | and build a real event from the queue entry. */ | |
cd21b839 | 2258 | |
1e12dd87 RS |
2259 | if (NILP (obj)) |
2260 | { | |
2261 | obj = make_lispy_event (event); | |
2262 | ||
2263 | /* Wipe out this event, to catch bugs. */ | |
2264 | event->kind = no_event; | |
2265 | (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] | |
2266 | = Qnil); | |
2267 | ||
2268 | kbd_fetch_ptr = event + 1; | |
2269 | } | |
4bb994d1 | 2270 | } |
284f4730 | 2271 | } |
2eb6bfbe | 2272 | #ifdef HAVE_MOUSE |
a612e298 | 2273 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2274 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2275 | { |
a9d77f1f | 2276 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2277 | Lisp_Object bar_window; |
3c370943 | 2278 | enum scroll_bar_part part; |
e5d77022 JB |
2279 | Lisp_Object x, y; |
2280 | unsigned long time; | |
284f4730 | 2281 | |
e177ac3a RS |
2282 | /* Note that this uses F to determine which display to look at. |
2283 | If there is no valid info, it does not store anything | |
2284 | so x remains nil. */ | |
2285 | x = Qnil; | |
7b4aedb9 | 2286 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2287 | |
2288 | obj = Qnil; | |
284f4730 | 2289 | |
07d2b8de | 2290 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2291 | /* Decide if we should generate a switch-frame event. Don't |
2292 | generate switch-frame events for motion outside of all Emacs | |
2293 | frames. */ | |
e177ac3a | 2294 | if (!NILP (x) && f) |
cd21b839 | 2295 | { |
9b8eb840 | 2296 | Lisp_Object frame; |
4bb994d1 | 2297 | |
9b8eb840 | 2298 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2299 | if (NILP (frame)) |
18cd2eeb | 2300 | XSETFRAME (frame, f); |
4bb994d1 | 2301 | |
80645119 JB |
2302 | if (! EQ (frame, internal_last_event_frame) |
2303 | && XFRAME (frame) != selected_frame) | |
764cb3f9 | 2304 | obj = make_lispy_switch_frame (frame); |
80645119 | 2305 | internal_last_event_frame = frame; |
cd21b839 | 2306 | } |
68553292 | 2307 | #endif |
4bb994d1 JB |
2308 | |
2309 | /* If we didn't decide to make a switch-frame event, go ahead and | |
2310 | return a mouse-motion event. */ | |
e177ac3a | 2311 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2312 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2313 | } |
2eb6bfbe | 2314 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2315 | else |
2316 | /* We were promised by the above while loop that there was | |
2317 | something for us to read! */ | |
2318 | abort (); | |
2319 | ||
2320 | input_pending = readable_events (); | |
2321 | ||
3c370943 JB |
2322 | #ifdef MULTI_FRAME |
2323 | Vlast_event_frame = internal_last_event_frame; | |
2324 | #endif | |
2325 | ||
284f4730 JB |
2326 | return (obj); |
2327 | } | |
a612e298 RS |
2328 | \f |
2329 | /* Process any events that are not user-visible, | |
2330 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2331 | |
2332 | void | |
2333 | swallow_events () | |
2334 | { | |
2335 | while (kbd_fetch_ptr != kbd_store_ptr) | |
2336 | { | |
2337 | struct input_event *event; | |
2338 | ||
2339 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) | |
2340 | ? kbd_fetch_ptr | |
2341 | : kbd_buffer); | |
2342 | ||
2343 | last_event_timestamp = event->timestamp; | |
2344 | ||
2345 | /* These two kinds of events get special handling | |
2346 | and don't actually appear to the command loop. */ | |
2347 | if (event->kind == selection_request_event) | |
2348 | { | |
2349 | #ifdef HAVE_X11 | |
2350 | x_handle_selection_request (event); | |
2351 | kbd_fetch_ptr = event + 1; | |
2352 | #else | |
2353 | /* We're getting selection request events, but we don't have | |
2354 | a window system. */ | |
2355 | abort (); | |
2356 | #endif | |
2357 | } | |
2358 | ||
2359 | else if (event->kind == selection_clear_event) | |
2360 | { | |
2361 | #ifdef HAVE_X11 | |
2362 | x_handle_selection_clear (event); | |
2363 | kbd_fetch_ptr = event + 1; | |
2364 | #else | |
2365 | /* We're getting selection request events, but we don't have | |
2366 | a window system. */ | |
2367 | abort (); | |
2368 | #endif | |
2369 | } | |
2370 | else | |
2371 | break; | |
2372 | } | |
2373 | ||
2374 | get_input_pending (&input_pending); | |
2375 | } | |
a612e298 | 2376 | \f |
284f4730 | 2377 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2378 | static Lisp_Object accent_key_syms; |
270a208f | 2379 | static Lisp_Object system_key_syms; |
284f4730 JB |
2380 | static Lisp_Object func_key_syms; |
2381 | static Lisp_Object mouse_syms; | |
2382 | ||
270a208f | 2383 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2384 | |
e9bf89a0 RS |
2385 | /* This is a list of keysym codes for special "accent" characters. |
2386 | It parallels lispy_accent_keys. */ | |
2387 | ||
2388 | static int lispy_accent_codes[] = | |
2389 | { | |
79a7046c | 2390 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2391 | XK_dead_circumflex, |
79a7046c RS |
2392 | #else |
2393 | 0, | |
2394 | #endif | |
2395 | #ifdef XK_dead_grave | |
e9bf89a0 | 2396 | XK_dead_grave, |
79a7046c RS |
2397 | #else |
2398 | 0, | |
2399 | #endif | |
2400 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2401 | XK_dead_tilde, |
79a7046c RS |
2402 | #else |
2403 | 0, | |
2404 | #endif | |
2405 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2406 | XK_dead_diaeresis, |
79a7046c RS |
2407 | #else |
2408 | 0, | |
2409 | #endif | |
2410 | #ifdef XK_dead_macron | |
e9bf89a0 | 2411 | XK_dead_macron, |
79a7046c RS |
2412 | #else |
2413 | 0, | |
2414 | #endif | |
2415 | #ifdef XK_dead_degree | |
e9bf89a0 | 2416 | XK_dead_degree, |
79a7046c RS |
2417 | #else |
2418 | 0, | |
2419 | #endif | |
2420 | #ifdef XK_dead_acute | |
e9bf89a0 | 2421 | XK_dead_acute, |
79a7046c RS |
2422 | #else |
2423 | 0, | |
2424 | #endif | |
2425 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2426 | XK_dead_cedilla, |
79a7046c RS |
2427 | #else |
2428 | 0, | |
2429 | #endif | |
2430 | #ifdef XK_dead_breve | |
e9bf89a0 | 2431 | XK_dead_breve, |
79a7046c RS |
2432 | #else |
2433 | 0, | |
2434 | #endif | |
2435 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2436 | XK_dead_ogonek, |
79a7046c RS |
2437 | #else |
2438 | 0, | |
2439 | #endif | |
2440 | #ifdef XK_dead_caron | |
e9bf89a0 | 2441 | XK_dead_caron, |
79a7046c RS |
2442 | #else |
2443 | 0, | |
2444 | #endif | |
2445 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2446 | XK_dead_doubleacute, |
79a7046c RS |
2447 | #else |
2448 | 0, | |
2449 | #endif | |
2450 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2451 | XK_dead_abovedot, |
79a7046c RS |
2452 | #else |
2453 | 0, | |
2454 | #endif | |
e9bf89a0 RS |
2455 | }; |
2456 | ||
2457 | /* This is a list of Lisp names for special "accent" characters. | |
2458 | It parallels lispy_accent_codes. */ | |
2459 | ||
2460 | static char *lispy_accent_keys[] = | |
2461 | { | |
2462 | "dead-circumflex", | |
2463 | "dead-grave", | |
2464 | "dead-tilde", | |
2465 | "dead-diaeresis", | |
2466 | "dead-macron", | |
2467 | "dead-degree", | |
2468 | "dead-acute", | |
2469 | "dead-cedilla", | |
2470 | "dead-breve", | |
2471 | "dead-ogonek", | |
2472 | "dead-caron", | |
2473 | "dead-doubleacute", | |
2474 | "dead-abovedot", | |
2475 | }; | |
2476 | ||
284f4730 JB |
2477 | /* You'll notice that this table is arranged to be conveniently |
2478 | indexed by X Windows keysym values. */ | |
2479 | static char *lispy_function_keys[] = | |
2480 | { | |
2481 | /* X Keysym value */ | |
2482 | ||
80e4aa30 | 2483 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2484 | "backspace", |
2485 | "tab", | |
2486 | "linefeed", | |
2487 | "clear", | |
2488 | 0, | |
2489 | "return", | |
2490 | 0, 0, | |
2491 | 0, 0, 0, /* 0xff10 */ | |
2492 | "pause", | |
2493 | 0, 0, 0, 0, 0, 0, 0, | |
2494 | "escape", | |
2495 | 0, 0, 0, 0, | |
2496 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2497 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2498 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2499 | ||
284f4730 JB |
2500 | "home", /* 0xff50 */ /* IsCursorKey */ |
2501 | "left", | |
2502 | "up", | |
2503 | "right", | |
2504 | "down", | |
2505 | "prior", | |
2506 | "next", | |
2507 | "end", | |
2508 | "begin", | |
2509 | 0, /* 0xff59 */ | |
2510 | 0, 0, 0, 0, 0, 0, | |
2511 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2512 | "print", | |
2513 | "execute", | |
2514 | "insert", | |
2515 | 0, /* 0xff64 */ | |
2516 | "undo", | |
2517 | "redo", | |
2518 | "menu", | |
2519 | "find", | |
2520 | "cancel", | |
2521 | "help", | |
2522 | "break", /* 0xff6b */ | |
2523 | ||
9fdbfdf8 | 2524 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2525 | 0, /* 0xff76 */ |
36ae397e | 2526 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2527 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2528 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2529 | "kp-tab", /* 0xff89 */ | |
2530 | 0, 0, 0, | |
2531 | "kp-enter", /* 0xff8d */ | |
2532 | 0, 0, 0, | |
2533 | "kp-f1", /* 0xff91 */ | |
2534 | "kp-f2", | |
2535 | "kp-f3", | |
2536 | "kp-f4", | |
872157e7 RS |
2537 | "kp-home", /* 0xff95 */ |
2538 | "kp-left", | |
2539 | "kp-up", | |
2540 | "kp-right", | |
2541 | "kp-down", | |
2542 | "kp-prior", /* kp-page-up */ | |
2543 | "kp-next", /* kp-page-down */ | |
2544 | "kp-end", | |
2545 | "kp-begin", | |
2546 | "kp-insert", | |
2547 | "kp-delete", | |
2548 | 0, /* 0xffa0 */ | |
2549 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2550 | "kp-multiply", /* 0xffaa */ |
2551 | "kp-add", | |
2552 | "kp-separator", | |
2553 | "kp-subtract", | |
2554 | "kp-decimal", | |
2555 | "kp-divide", /* 0xffaf */ | |
2556 | "kp-0", /* 0xffb0 */ | |
2557 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2558 | 0, /* 0xffba */ | |
2559 | 0, 0, | |
2560 | "kp-equal", /* 0xffbd */ | |
2561 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2562 | "f2", |
2563 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2564 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2565 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2566 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2567 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2568 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2569 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2570 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2571 | }; |
2572 | ||
2573 | static char *lispy_mouse_names[] = | |
2574 | { | |
2575 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2576 | }; | |
2577 | ||
3c370943 | 2578 | /* Scroll bar parts. */ |
4bb994d1 JB |
2579 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2580 | ||
3c370943 JB |
2581 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2582 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2583 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2584 | }; | |
2585 | ||
2586 | ||
7b4aedb9 | 2587 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2588 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2589 | |
2590 | The elements have the form | |
2591 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2592 | where REST is the cdr of a position as it would be reported in the event. | |
2593 | ||
2594 | The make_lispy_event function stores positions here to tell the | |
2595 | difference between click and drag events, and to store the starting | |
2596 | location to be included in drag events. */ | |
2597 | ||
2598 | static Lisp_Object button_down_location; | |
88cb0656 | 2599 | |
fbcd35bd JB |
2600 | /* Information about the most recent up-going button event: Which |
2601 | button, what location, and what time. */ | |
2602 | ||
559f9d04 RS |
2603 | static int last_mouse_button; |
2604 | static int last_mouse_x; | |
2605 | static int last_mouse_y; | |
2606 | static unsigned long button_down_time; | |
fbcd35bd | 2607 | |
564dc952 JB |
2608 | /* The maximum time between clicks to make a double-click, |
2609 | or Qnil to disable double-click detection, | |
2610 | or Qt for no time limit. */ | |
2611 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2612 | |
2613 | /* The number of clicks in this multiple-click. */ | |
2614 | ||
2615 | int double_click_count; | |
2616 | ||
bb936752 FP |
2617 | #ifdef USE_X_TOOLKIT |
2618 | extern Lisp_Object map_event_to_object (); | |
2619 | #endif /* USE_X_TOOLKIT */ | |
2620 | ||
284f4730 JB |
2621 | /* Given a struct input_event, build the lisp event which represents |
2622 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2623 | movement buffer, which should have a movement event in it. |
2624 | ||
2625 | Note that events must be passed to this function in the order they | |
2626 | are received; this function stores the location of button presses | |
2627 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2628 | |
2629 | static Lisp_Object | |
2630 | make_lispy_event (event) | |
2631 | struct input_event *event; | |
2632 | { | |
79a7046c RS |
2633 | int i; |
2634 | ||
284f4730 JB |
2635 | #ifdef SWITCH_ENUM_BUG |
2636 | switch ((int) event->kind) | |
2637 | #else | |
2638 | switch (event->kind) | |
2639 | #endif | |
2640 | { | |
284f4730 JB |
2641 | /* A simple keystroke. */ |
2642 | case ascii_keystroke: | |
86e5706b | 2643 | { |
9343ab07 | 2644 | Lisp_Object lispy_c; |
e9bf89a0 | 2645 | int c = event->code & 0377; |
5a1c6df8 JB |
2646 | /* Turn ASCII characters into control characters |
2647 | when proper. */ | |
2648 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2649 | c = make_ctrl_char (c); |
2650 | ||
2651 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2652 | just above, and the shift key was taken care of by the X code, | |
2653 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2654 | c |= (event->modifiers |
2655 | & (meta_modifier | alt_modifier | |
2656 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2657 | button_down_time = 0; |
bb9e9bed | 2658 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2659 | return lispy_c; |
86e5706b | 2660 | } |
284f4730 JB |
2661 | |
2662 | /* A function key. The symbol may need to have modifier prefixes | |
2663 | tacked onto it. */ | |
2664 | case non_ascii_keystroke: | |
559f9d04 | 2665 | button_down_time = 0; |
e9bf89a0 RS |
2666 | |
2667 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2668 | if (event->code == lispy_accent_codes[i]) | |
2669 | return modify_event_symbol (i, | |
2670 | event->modifiers, | |
80e4aa30 | 2671 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2672 | lispy_accent_keys, &accent_key_syms, |
2673 | (sizeof (lispy_accent_keys) | |
2674 | / sizeof (lispy_accent_keys[0]))); | |
2675 | ||
270a208f | 2676 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2677 | if (event->code & (1 << 28)) |
2678 | { | |
2679 | /* We need to use an alist rather than a vector as the cache | |
2680 | since we can't make a vector long enuf. */ | |
270a208f RS |
2681 | if (NILP (system_key_syms)) |
2682 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2683 | return modify_event_symbol (event->code & 0xffffff, |
2684 | event->modifiers, | |
270a208f RS |
2685 | Qfunction_key, Vsystem_key_alist, |
2686 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2687 | } |
2688 | ||
e9bf89a0 RS |
2689 | return modify_event_symbol (event->code - 0xff00, |
2690 | event->modifiers, | |
80e4aa30 | 2691 | Qfunction_key, Qnil, |
284f4730 JB |
2692 | lispy_function_keys, &func_key_syms, |
2693 | (sizeof (lispy_function_keys) | |
2694 | / sizeof (lispy_function_keys[0]))); | |
2695 | break; | |
2696 | ||
87485d6f | 2697 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
88cb0656 JB |
2698 | /* A mouse click. Figure out where it is, decide whether it's |
2699 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2700 | case mouse_click: |
3c370943 | 2701 | case scroll_bar_click: |
284f4730 | 2702 | { |
e9bf89a0 | 2703 | int button = event->code; |
559f9d04 | 2704 | int is_double; |
7b4aedb9 | 2705 | Lisp_Object position; |
dbc4e1c1 JB |
2706 | Lisp_Object *start_pos_ptr; |
2707 | Lisp_Object start_pos; | |
284f4730 | 2708 | |
7b4aedb9 | 2709 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2710 | abort (); |
2711 | ||
7b4aedb9 JB |
2712 | /* Build the position as appropriate for this mouse click. */ |
2713 | if (event->kind == mouse_click) | |
284f4730 | 2714 | { |
7b4aedb9 | 2715 | int part; |
598a9fa7 | 2716 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2717 | Lisp_Object window; |
7b4aedb9 | 2718 | Lisp_Object posn; |
9e20143a RS |
2719 | int row, column; |
2720 | ||
5da3133a RS |
2721 | /* Ignore mouse events that were made on frame that |
2722 | have been deleted. */ | |
2723 | if (! FRAME_LIVE_P (f)) | |
2724 | return Qnil; | |
2725 | ||
9e20143a RS |
2726 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
2727 | &column, &row, 0, 0); | |
7b4aedb9 | 2728 | |
bb936752 FP |
2729 | #ifdef USE_X_TOOLKIT |
2730 | if (FRAME_EXTERNAL_MENU_BAR (f) && XINT (event->y) == -1) | |
7b260679 | 2731 | #else |
9e20143a | 2732 | if (row < FRAME_MENU_BAR_LINES (f)) |
7b260679 | 2733 | #endif |
bb936752 | 2734 | { |
b7c49376 | 2735 | Lisp_Object items, item; |
0a0e8fe6 RS |
2736 | int hpos; |
2737 | int i; | |
2738 | ||
2739 | /* Activate the menu bar on the down event. If the | |
2740 | up event comes in before the menu code can deal with it, | |
2741 | just ignore it. */ | |
2742 | if (! (event->modifiers & down_modifier)) | |
2743 | return Qnil; | |
0aafc975 | 2744 | |
4f0b919b | 2745 | #ifndef USE_X_TOOLKIT |
f2ae6b3f | 2746 | item = Qnil; |
5ec75a55 | 2747 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2748 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2749 | { |
2750 | Lisp_Object pos, string; | |
b7c49376 RS |
2751 | string = XVECTOR (items)->contents[i + 1]; |
2752 | pos = XVECTOR (items)->contents[i + 2]; | |
2753 | if (NILP (string)) | |
2754 | break; | |
9e20143a RS |
2755 | if (column >= XINT (pos) |
2756 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2757 | { |
2758 | item = XVECTOR (items)->contents[i]; | |
2759 | break; | |
2760 | } | |
5ec75a55 | 2761 | } |
bb936752 | 2762 | #endif /* not USE_X_TOOLKIT */ |
9e20143a | 2763 | |
5ec75a55 RS |
2764 | position |
2765 | = Fcons (event->frame_or_window, | |
2766 | Fcons (Qmenu_bar, | |
2767 | Fcons (Fcons (event->x, event->y), | |
2768 | Fcons (make_number (event->timestamp), | |
2769 | Qnil)))); | |
2770 | ||
b7c49376 | 2771 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2772 | } |
0aafc975 | 2773 | |
9e20143a | 2774 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 2775 | |
8c18cbfb | 2776 | if (!WINDOWP (window)) |
78ced549 RS |
2777 | { |
2778 | window = event->frame_or_window; | |
2779 | posn = Qnil; | |
2780 | } | |
284f4730 | 2781 | else |
7b4aedb9 | 2782 | { |
9e20143a RS |
2783 | int pixcolumn, pixrow; |
2784 | column -= XINT (XWINDOW (window)->left); | |
2785 | row -= XINT (XWINDOW (window)->top); | |
2786 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2787 | XSETINT (event->x, pixcolumn); | |
2788 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2789 | |
7b4aedb9 JB |
2790 | if (part == 1) |
2791 | posn = Qmode_line; | |
2792 | else if (part == 2) | |
2793 | posn = Qvertical_line; | |
2794 | else | |
18cd2eeb KH |
2795 | XSETINT (posn, |
2796 | buffer_posn_from_coords (XWINDOW (window), | |
2797 | column, row)); | |
7b4aedb9 JB |
2798 | } |
2799 | ||
5ec75a55 RS |
2800 | position |
2801 | = Fcons (window, | |
2802 | Fcons (posn, | |
2803 | Fcons (Fcons (event->x, event->y), | |
2804 | Fcons (make_number (event->timestamp), | |
2805 | Qnil)))); | |
284f4730 | 2806 | } |
7b4aedb9 | 2807 | else |
88cb0656 | 2808 | { |
9e20143a RS |
2809 | Lisp_Object window; |
2810 | Lisp_Object portion_whole; | |
2811 | Lisp_Object part; | |
2812 | ||
2813 | window = event->frame_or_window; | |
2814 | portion_whole = Fcons (event->x, event->y); | |
2815 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2816 | |
2817 | position = | |
2818 | Fcons (window, | |
3c370943 | 2819 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2820 | Fcons (portion_whole, |
2821 | Fcons (make_number (event->timestamp), | |
9e20143a | 2822 | Fcons (part, Qnil))))); |
88cb0656 JB |
2823 | } |
2824 | ||
dbc4e1c1 JB |
2825 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2826 | ||
2827 | start_pos = *start_pos_ptr; | |
2828 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2829 | |
559f9d04 RS |
2830 | is_double = (button == last_mouse_button |
2831 | && XINT (event->x) == last_mouse_x | |
2832 | && XINT (event->y) == last_mouse_y | |
2833 | && button_down_time != 0 | |
2834 | && (EQ (Vdouble_click_time, Qt) | |
2835 | || (INTEGERP (Vdouble_click_time) | |
2836 | && ((int)(event->timestamp - button_down_time) | |
2837 | < XINT (Vdouble_click_time))))); | |
2838 | last_mouse_button = button; | |
2839 | last_mouse_x = XINT (event->x); | |
2840 | last_mouse_y = XINT (event->y); | |
2841 | ||
7b4aedb9 JB |
2842 | /* If this is a button press, squirrel away the location, so |
2843 | we can decide later whether it was a click or a drag. */ | |
2844 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2845 | { |
2846 | if (is_double) | |
2847 | { | |
2848 | double_click_count++; | |
2849 | event->modifiers |= ((double_click_count > 2) | |
2850 | ? triple_modifier | |
2851 | : double_modifier); | |
2852 | } | |
2853 | else | |
2854 | double_click_count = 1; | |
2855 | button_down_time = event->timestamp; | |
2856 | *start_pos_ptr = Fcopy_alist (position); | |
2857 | } | |
7b4aedb9 | 2858 | |
88cb0656 | 2859 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2860 | see if this was a click or a drag. */ |
88cb0656 JB |
2861 | else if (event->modifiers & up_modifier) |
2862 | { | |
48e416d4 RS |
2863 | /* If we did not see a down before this up, |
2864 | ignore the up. Probably this happened because | |
2865 | the down event chose a menu item. | |
2866 | It would be an annoyance to treat the release | |
2867 | of the button that chose the menu item | |
2868 | as a separate event. */ | |
2869 | ||
8c18cbfb | 2870 | if (!CONSP (start_pos)) |
48e416d4 RS |
2871 | return Qnil; |
2872 | ||
88cb0656 | 2873 | event->modifiers &= ~up_modifier; |
48e416d4 | 2874 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 2875 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
2876 | event->modifiers |= click_modifier; |
2877 | else | |
48e416d4 | 2878 | #endif |
dbc4e1c1 JB |
2879 | { |
2880 | /* The third element of every position should be the (x,y) | |
2881 | pair. */ | |
9b8eb840 | 2882 | Lisp_Object down; |
dbc4e1c1 | 2883 | |
9b8eb840 | 2884 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
2885 | if (EQ (event->x, XCONS (down)->car) |
2886 | && EQ (event->y, XCONS (down)->cdr)) | |
2887 | { | |
bc536d84 | 2888 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2889 | } |
2890 | else | |
2891 | { | |
559f9d04 | 2892 | button_down_time = 0; |
fbcd35bd JB |
2893 | event->modifiers |= drag_modifier; |
2894 | } | |
bc536d84 RS |
2895 | /* Don't check is_double; treat this as multiple |
2896 | if the down-event was multiple. */ | |
2897 | if (double_click_count > 1) | |
2898 | event->modifiers |= ((double_click_count > 2) | |
2899 | ? triple_modifier | |
2900 | : double_modifier); | |
dbc4e1c1 | 2901 | } |
88cb0656 JB |
2902 | } |
2903 | else | |
2904 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2905 | the up_modifier set. */ |
88cb0656 JB |
2906 | abort (); |
2907 | ||
88cb0656 | 2908 | { |
7b4aedb9 | 2909 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
2910 | Lisp_Object head; |
2911 | ||
2912 | head = modify_event_symbol (button, | |
2913 | event->modifiers, | |
2914 | Qmouse_click, Qnil, | |
2915 | lispy_mouse_names, &mouse_syms, | |
2916 | (sizeof (lispy_mouse_names) | |
2917 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 2918 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
2919 | return Fcons (head, |
2920 | Fcons (start_pos, | |
2921 | Fcons (position, | |
2922 | Qnil))); | |
fbcd35bd JB |
2923 | else if (event->modifiers & (double_modifier | triple_modifier)) |
2924 | return Fcons (head, | |
2925 | Fcons (position, | |
2926 | Fcons (make_number (double_click_count), | |
2927 | Qnil))); | |
88cb0656 JB |
2928 | else |
2929 | return Fcons (head, | |
7b4aedb9 | 2930 | Fcons (position, |
88cb0656 JB |
2931 | Qnil)); |
2932 | } | |
284f4730 | 2933 | } |
5846638c | 2934 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 2935 | |
284f4730 JB |
2936 | /* The 'kind' field of the event is something we don't recognize. */ |
2937 | default: | |
48e416d4 | 2938 | abort (); |
284f4730 JB |
2939 | } |
2940 | } | |
2941 | ||
87485d6f | 2942 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
6cbff1cb | 2943 | |
284f4730 | 2944 | static Lisp_Object |
7b4aedb9 | 2945 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 2946 | FRAME_PTR frame; |
7b4aedb9 | 2947 | Lisp_Object bar_window; |
3c370943 | 2948 | enum scroll_bar_part part; |
284f4730 | 2949 | Lisp_Object x, y; |
e5d77022 | 2950 | unsigned long time; |
284f4730 | 2951 | { |
68553292 | 2952 | #ifdef MULTI_FRAME |
3c370943 | 2953 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 2954 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 2955 | { |
9b8eb840 | 2956 | Lisp_Object part_sym; |
4bb994d1 | 2957 | |
9b8eb840 | 2958 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 2959 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 2960 | (Fcons (Fcons (bar_window, |
3c370943 | 2961 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
2962 | Fcons (Fcons (x, y), |
2963 | Fcons (make_number (time), | |
cb5df6ae | 2964 | Fcons (part_sym, |
4bb994d1 JB |
2965 | Qnil))))), |
2966 | Qnil))); | |
2967 | } | |
2968 | ||
2969 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 2970 | else |
68553292 | 2971 | #endif /* MULTI_FRAME */ |
284f4730 | 2972 | { |
4bb994d1 | 2973 | int area; |
9e20143a | 2974 | Lisp_Object window; |
4bb994d1 | 2975 | Lisp_Object posn; |
9e20143a RS |
2976 | int column, row; |
2977 | ||
68553292 | 2978 | #ifdef MULTI_FRAME |
9e20143a | 2979 | if (frame) |
68553292 RS |
2980 | #else |
2981 | if (1) | |
2982 | #endif | |
047688cb RS |
2983 | { |
2984 | /* It's in a frame; which window on that frame? */ | |
2985 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
2986 | window = window_from_coordinates (frame, column, row, &area); | |
2987 | } | |
9e20143a RS |
2988 | else |
2989 | window = Qnil; | |
4bb994d1 | 2990 | |
8c18cbfb | 2991 | if (WINDOWP (window)) |
4bb994d1 | 2992 | { |
9e20143a RS |
2993 | int pixcolumn, pixrow; |
2994 | column -= XINT (XWINDOW (window)->left); | |
2995 | row -= XINT (XWINDOW (window)->top); | |
2996 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
2997 | XSETINT (x, pixcolumn); | |
2998 | XSETINT (y, pixrow); | |
4bb994d1 JB |
2999 | |
3000 | if (area == 1) | |
3001 | posn = Qmode_line; | |
3002 | else if (area == 2) | |
3003 | posn = Qvertical_line; | |
3004 | else | |
18cd2eeb KH |
3005 | XSETINT (posn, |
3006 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3007 | } |
68553292 | 3008 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3009 | else if (frame != 0) |
3010 | { | |
18cd2eeb | 3011 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3012 | posn = Qnil; |
3013 | } | |
68553292 | 3014 | #endif |
284f4730 | 3015 | else |
4bb994d1 JB |
3016 | { |
3017 | window = Qnil; | |
3018 | posn = Qnil; | |
bb9e9bed KH |
3019 | XSETFASTINT (x, 0); |
3020 | XSETFASTINT (y, 0); | |
4bb994d1 | 3021 | } |
284f4730 | 3022 | |
4bb994d1 JB |
3023 | return Fcons (Qmouse_movement, |
3024 | Fcons (Fcons (window, | |
3025 | Fcons (posn, | |
3026 | Fcons (Fcons (x, y), | |
3027 | Fcons (make_number (time), | |
3028 | Qnil)))), | |
3029 | Qnil)); | |
3030 | } | |
284f4730 JB |
3031 | } |
3032 | ||
68553292 | 3033 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 3034 | |
cd21b839 JB |
3035 | /* Construct a switch frame event. */ |
3036 | static Lisp_Object | |
3037 | make_lispy_switch_frame (frame) | |
3038 | Lisp_Object frame; | |
3039 | { | |
3040 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3041 | } | |
0a7f1fc0 JB |
3042 | \f |
3043 | /* Manipulating modifiers. */ | |
284f4730 | 3044 | |
0a7f1fc0 | 3045 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3046 | |
0a7f1fc0 JB |
3047 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3048 | SYMBOL's name of the end of the modifiers; the string from this | |
3049 | position is the unmodified symbol name. | |
284f4730 | 3050 | |
0a7f1fc0 JB |
3051 | This doesn't use any caches. */ |
3052 | static int | |
3053 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3054 | Lisp_Object symbol; |
0a7f1fc0 | 3055 | int *modifier_end; |
284f4730 JB |
3056 | { |
3057 | struct Lisp_String *name; | |
3058 | int i; | |
3059 | int modifiers; | |
284f4730 JB |
3060 | |
3061 | CHECK_SYMBOL (symbol, 1); | |
3062 | ||
3063 | modifiers = 0; | |
3064 | name = XSYMBOL (symbol)->name; | |
3065 | ||
284f4730 | 3066 | |
0a7f1fc0 | 3067 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
3068 | switch (name->data[i]) |
3069 | { | |
0a7f1fc0 JB |
3070 | #define SINGLE_LETTER_MOD(bit) \ |
3071 | if (name->data[i+1] != '-') \ | |
3072 | goto no_more_modifiers; \ | |
3073 | modifiers |= bit; \ | |
fce33686 | 3074 | i += 2; |
0a7f1fc0 JB |
3075 | |
3076 | case 'A': | |
3077 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
3078 | break; |
3079 | ||
3080 | case 'C': | |
0a7f1fc0 | 3081 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
3082 | break; |
3083 | ||
3084 | case 'H': | |
0a7f1fc0 | 3085 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
3086 | break; |
3087 | ||
3088 | case 'M': | |
0a7f1fc0 | 3089 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
3090 | break; |
3091 | ||
3092 | case 'S': | |
0a7f1fc0 | 3093 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
3094 | break; |
3095 | ||
3096 | case 's': | |
86e5706b | 3097 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
3098 | break; |
3099 | ||
fce33686 JB |
3100 | case 'd': |
3101 | if (i + 5 > name->size) | |
3102 | goto no_more_modifiers; | |
3103 | if (! strncmp (name->data + i, "drag-", 5)) | |
3104 | { | |
fce33686 JB |
3105 | modifiers |= drag_modifier; |
3106 | i += 5; | |
3107 | } | |
3108 | else if (! strncmp (name->data + i, "down-", 5)) | |
3109 | { | |
fce33686 JB |
3110 | modifiers |= down_modifier; |
3111 | i += 5; | |
3112 | } | |
fbcd35bd JB |
3113 | else if (i + 7 <= name->size |
3114 | && ! strncmp (name->data + i, "double-", 7)) | |
3115 | { | |
3116 | modifiers |= double_modifier; | |
3117 | i += 7; | |
3118 | } | |
3119 | else | |
3120 | goto no_more_modifiers; | |
3121 | break; | |
3122 | ||
3123 | case 't': | |
3124 | if (i + 7 > name->size) | |
3125 | goto no_more_modifiers; | |
3126 | if (! strncmp (name->data + i, "triple-", 7)) | |
3127 | { | |
3128 | modifiers |= triple_modifier; | |
3129 | i += 7; | |
3130 | } | |
fce33686 JB |
3131 | else |
3132 | goto no_more_modifiers; | |
284f4730 JB |
3133 | break; |
3134 | ||
3135 | default: | |
3136 | goto no_more_modifiers; | |
0a7f1fc0 JB |
3137 | |
3138 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
3139 | } |
3140 | no_more_modifiers: | |
3141 | ||
0a7f1fc0 | 3142 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3143 | if (! (modifiers & (down_modifier | drag_modifier |
3144 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3145 | && i + 7 == name->size |
4bb994d1 | 3146 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3147 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3148 | modifiers |= click_modifier; |
3149 | ||
3150 | if (modifier_end) | |
3151 | *modifier_end = i; | |
3152 | ||
3153 | return modifiers; | |
3154 | } | |
3155 | ||
3156 | ||
3157 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
3158 | prepended to the string BASE[0..BASE_LEN-1]. | |
3159 | This doesn't use any caches. */ | |
3160 | static Lisp_Object | |
3161 | apply_modifiers_uncached (modifiers, base, base_len) | |
3162 | int modifiers; | |
3163 | char *base; | |
3164 | int base_len; | |
3165 | { | |
3166 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3167 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3168 | reference to it. */ | |
3169 | char *new_mods = | |
fbcd35bd | 3170 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3171 | int mod_len; |
284f4730 | 3172 | |
284f4730 | 3173 | { |
0a7f1fc0 JB |
3174 | char *p = new_mods; |
3175 | ||
3176 | /* Only the event queue may use the `up' modifier; it should always | |
3177 | be turned into a click or drag event before presented to lisp code. */ | |
3178 | if (modifiers & up_modifier) | |
3179 | abort (); | |
3180 | ||
3181 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3182 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3183 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3184 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3185 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3186 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3187 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3188 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3189 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3190 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3191 | /* The click modifier is denoted by the absence of other modifiers. */ |
3192 | ||
3193 | *p = '\0'; | |
3194 | ||
3195 | mod_len = p - new_mods; | |
3196 | } | |
284f4730 | 3197 | |
0a7f1fc0 | 3198 | { |
9b8eb840 | 3199 | Lisp_Object new_name; |
0a7f1fc0 | 3200 | |
9b8eb840 | 3201 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3202 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3203 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3204 | |
3205 | return Fintern (new_name, Qnil); | |
3206 | } | |
3207 | } | |
3208 | ||
3209 | ||
0a7f1fc0 JB |
3210 | static char *modifier_names[] = |
3211 | { | |
fbcd35bd | 3212 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3213 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3214 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3215 | }; |
80645119 | 3216 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3217 | |
3218 | static Lisp_Object modifier_symbols; | |
3219 | ||
3220 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3221 | static Lisp_Object | |
3222 | lispy_modifier_list (modifiers) | |
3223 | int modifiers; | |
3224 | { | |
3225 | Lisp_Object modifier_list; | |
3226 | int i; | |
3227 | ||
3228 | modifier_list = Qnil; | |
80645119 | 3229 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3230 | if (modifiers & (1<<i)) |
80645119 JB |
3231 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3232 | modifier_list); | |
0a7f1fc0 JB |
3233 | |
3234 | return modifier_list; | |
3235 | } | |
3236 | ||
3237 | ||
3238 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3239 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3240 | MASK is the set of modifiers present in SYMBOL's name. | |
3241 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3242 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3243 | Qevent_symbol_elements property. */ | |
3244 | static Lisp_Object | |
3245 | parse_modifiers (symbol) | |
3246 | Lisp_Object symbol; | |
3247 | { | |
9b8eb840 | 3248 | Lisp_Object elements; |
0a7f1fc0 | 3249 | |
9b8eb840 | 3250 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3251 | if (CONSP (elements)) |
3252 | return elements; | |
3253 | else | |
3254 | { | |
3255 | int end; | |
3256 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3257 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3258 | Lisp_Object mask; |
3259 | ||
9b8eb840 KH |
3260 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3261 | XSYMBOL (symbol)->name->size - end), | |
3262 | Qnil); | |
3263 | ||
734fef94 JB |
3264 | if (modifiers & ~((1<<VALBITS) - 1)) |
3265 | abort (); | |
bb9e9bed | 3266 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3267 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3268 | ||
3269 | /* Cache the parsing results on SYMBOL. */ | |
3270 | Fput (symbol, Qevent_symbol_element_mask, | |
3271 | elements); | |
3272 | Fput (symbol, Qevent_symbol_elements, | |
3273 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3274 | ||
3275 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3276 | it would be nice to put that in unmodified's cache. | |
3277 | But we can't, since we're not sure that parse_modifiers is | |
3278 | canonical. */ | |
3279 | ||
3280 | return elements; | |
3281 | } | |
3282 | } | |
3283 | ||
3284 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3285 | BASE must be unmodified. | |
3286 | ||
3287 | This is like apply_modifiers_uncached, but uses BASE's | |
3288 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3289 | Qevent_symbol_elements properties, since it has that info anyway. |
3290 | ||
3291 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3292 | the modified symbol. */ | |
0a7f1fc0 JB |
3293 | static Lisp_Object |
3294 | apply_modifiers (modifiers, base) | |
3295 | int modifiers; | |
3296 | Lisp_Object base; | |
3297 | { | |
7b4aedb9 | 3298 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3299 | |
80645119 JB |
3300 | /* Mask out upper bits. We don't know where this value's been. */ |
3301 | modifiers &= (1<<VALBITS) - 1; | |
3302 | ||
0a7f1fc0 | 3303 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3304 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3305 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3306 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3307 | |
3308 | if (CONSP (entry)) | |
7b4aedb9 JB |
3309 | new_symbol = XCONS (entry)->cdr; |
3310 | else | |
3311 | { | |
3312 | /* We have to create the symbol ourselves. */ | |
3313 | new_symbol = apply_modifiers_uncached (modifiers, | |
3314 | XSYMBOL (base)->name->data, | |
3315 | XSYMBOL (base)->name->size); | |
3316 | ||
3317 | /* Add the new symbol to the base's cache. */ | |
3318 | entry = Fcons (index, new_symbol); | |
3319 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3320 | ||
3321 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3322 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3323 | Fput (new_symbol, Qevent_symbol_element_mask, |
3324 | Fcons (base, Fcons (index, Qnil))); | |
3325 | Fput (new_symbol, Qevent_symbol_elements, | |
3326 | Fcons (base, lispy_modifier_list (modifiers))); | |
3327 | } | |
0a7f1fc0 | 3328 | |
7b4aedb9 JB |
3329 | /* Make sure this symbol is of the same kind as BASE. |
3330 | ||
3331 | You'd think we could just set this once and for all when we | |
3332 | intern the symbol above, but reorder_modifiers may call us when | |
3333 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3334 | because it has a Qmodifier_cache property it must have its |
3335 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3336 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3337 | { | |
9b8eb840 | 3338 | Lisp_Object kind; |
7b4aedb9 | 3339 | |
9b8eb840 | 3340 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3341 | if (! NILP (kind)) |
3342 | Fput (new_symbol, Qevent_kind, kind); | |
3343 | } | |
3344 | ||
3345 | return new_symbol; | |
0a7f1fc0 JB |
3346 | } |
3347 | ||
3348 | ||
3349 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3350 | return a symbol with the modifiers placed in the canonical order. | |
3351 | Canonical order is alphabetical, except for down and drag, which | |
3352 | always come last. The 'click' modifier is never written out. | |
3353 | ||
3354 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3355 | and M-C-foo end up being equivalent in the keymap. */ | |
3356 | ||
3357 | Lisp_Object | |
3358 | reorder_modifiers (symbol) | |
3359 | Lisp_Object symbol; | |
3360 | { | |
3361 | /* It's hopefully okay to write the code this way, since everything | |
3362 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3363 | Lisp_Object parsed; |
0a7f1fc0 | 3364 | |
9b8eb840 | 3365 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3366 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3367 | XCONS (parsed)->car); | |
3368 | } | |
3369 | ||
3370 | ||
284f4730 JB |
3371 | /* For handling events, we often want to produce a symbol whose name |
3372 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3373 | to some base, like the name of a function key or mouse button. | |
3374 | modify_event_symbol produces symbols of this sort. | |
3375 | ||
3376 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3377 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3378 | in the table. | |
3379 | ||
80e4aa30 RS |
3380 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3381 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3382 | ||
284f4730 JB |
3383 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3384 | persist between calls to modify_event_symbol that it can use to | |
3385 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3386 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3387 | |
3388 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3389 | ||
3390 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3391 | whose prefixes should be applied to the symbol name. | |
3392 | ||
3393 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3394 | the returned symbol. |
3395 | ||
3396 | The symbols we create are supposed to have an | |
eb8c3be9 | 3397 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3398 | in the symbol's name. */ |
3399 | ||
284f4730 | 3400 | static Lisp_Object |
80e4aa30 RS |
3401 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3402 | name_table, symbol_table, table_size) | |
284f4730 JB |
3403 | int symbol_num; |
3404 | unsigned modifiers; | |
3405 | Lisp_Object symbol_kind; | |
80e4aa30 | 3406 | Lisp_Object name_alist; |
284f4730 JB |
3407 | char **name_table; |
3408 | Lisp_Object *symbol_table; | |
3409 | int table_size; | |
3410 | { | |
80e4aa30 RS |
3411 | Lisp_Object value; |
3412 | Lisp_Object symbol_int; | |
3413 | ||
18cd2eeb | 3414 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3415 | |
3416 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3417 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3418 | return Qnil; |
284f4730 | 3419 | |
80e4aa30 RS |
3420 | if (CONSP (*symbol_table)) |
3421 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3422 | ||
0a7f1fc0 | 3423 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3424 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3425 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3426 | we've never used that symbol before. */ | |
80e4aa30 | 3427 | else |
88cb0656 | 3428 | { |
80e4aa30 RS |
3429 | if (! VECTORP (*symbol_table) |
3430 | || XVECTOR (*symbol_table)->size != table_size) | |
3431 | { | |
3432 | Lisp_Object size; | |
0a7f1fc0 | 3433 | |
bb9e9bed | 3434 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3435 | *symbol_table = Fmake_vector (size, Qnil); |
3436 | } | |
284f4730 | 3437 | |
80e4aa30 RS |
3438 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3439 | } | |
284f4730 | 3440 | |
0a7f1fc0 | 3441 | /* Have we already used this symbol before? */ |
80e4aa30 | 3442 | if (NILP (value)) |
284f4730 | 3443 | { |
0a7f1fc0 | 3444 | /* No; let's create it. */ |
80e4aa30 | 3445 | if (!NILP (name_alist)) |
b64b4075 | 3446 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3447 | else if (name_table[symbol_num]) |
3448 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3449 | |
3450 | if (NILP (value)) | |
d1f50460 RS |
3451 | { |
3452 | char buf[20]; | |
3453 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3454 | value = intern (buf); |
d1f50460 | 3455 | } |
0a7f1fc0 | 3456 | |
80e4aa30 RS |
3457 | if (CONSP (*symbol_table)) |
3458 | *symbol_table = Fcons (value, *symbol_table); | |
3459 | else | |
3460 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3461 | ||
0a7f1fc0 JB |
3462 | /* Fill in the cache entries for this symbol; this also |
3463 | builds the Qevent_symbol_elements property, which the user | |
3464 | cares about. */ | |
80e4aa30 RS |
3465 | apply_modifiers (modifiers & click_modifier, value); |
3466 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3467 | } |
88cb0656 | 3468 | |
0a7f1fc0 | 3469 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3470 | return apply_modifiers (modifiers, value); |
284f4730 | 3471 | } |
0a7f1fc0 | 3472 | |
284f4730 | 3473 | \f |
284f4730 JB |
3474 | /* Store into *addr a value nonzero if terminal input chars are available. |
3475 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3476 | but works even if FIONREAD does not exist. | |
3477 | (In fact, this may actually read some input.) */ | |
3478 | ||
3479 | static void | |
3480 | get_input_pending (addr) | |
3481 | int *addr; | |
3482 | { | |
3483 | /* First of all, have we already counted some input? */ | |
3484 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3485 | ||
3486 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3487 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3488 | return; | |
3489 | ||
3490 | /* Try to read some input and see how much we get. */ | |
3491 | gobble_input (0); | |
3492 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3493 | } | |
3494 | ||
81931ba1 | 3495 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3496 | |
3497 | int | |
3498 | gobble_input (expected) | |
3499 | int expected; | |
3500 | { | |
3501 | #ifndef VMS | |
3502 | #ifdef SIGIO | |
3503 | if (interrupt_input) | |
3504 | { | |
32676c08 | 3505 | SIGMASKTYPE mask; |
e065a56e | 3506 | mask = sigblockx (SIGIO); |
284f4730 | 3507 | read_avail_input (expected); |
e065a56e | 3508 | sigsetmask (mask); |
284f4730 JB |
3509 | } |
3510 | else | |
81931ba1 RS |
3511 | #ifdef POLL_FOR_INPUT |
3512 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3513 | { | |
3514 | SIGMASKTYPE mask; | |
3515 | mask = sigblockx (SIGALRM); | |
3516 | read_avail_input (expected); | |
3517 | sigsetmask (mask); | |
3518 | } | |
3519 | else | |
87485d6f | 3520 | #endif |
284f4730 JB |
3521 | #endif |
3522 | read_avail_input (expected); | |
3523 | #endif | |
3524 | } | |
a8015ab5 | 3525 | |
241ceaf7 RS |
3526 | /* Put a buffer_switch_event in the buffer |
3527 | so that read_key_sequence will notice the new current buffer. */ | |
3528 | ||
a8015ab5 KH |
3529 | record_asynch_buffer_change () |
3530 | { | |
3531 | struct input_event event; | |
a30f0615 RS |
3532 | Lisp_Object tem; |
3533 | ||
a8015ab5 KH |
3534 | event.kind = buffer_switch_event; |
3535 | event.frame_or_window = Qnil; | |
241ceaf7 | 3536 | |
f65e6f7d | 3537 | #ifdef subprocesses |
a30f0615 RS |
3538 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3539 | The purpose of the event is to make read_key_sequence look up the | |
3540 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3541 | and the event could cause trouble by messing up (input-pending-p). */ | |
3542 | tem = Fwaiting_for_user_input_p (); | |
3543 | if (NILP (tem)) | |
3544 | return; | |
f65e6f7d RS |
3545 | #else |
3546 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3547 | return; | |
3548 | #endif | |
a30f0615 | 3549 | |
241ceaf7 RS |
3550 | /* Make sure no interrupt happens while storing the event. */ |
3551 | #ifdef SIGIO | |
3552 | if (interrupt_input) | |
3553 | { | |
3554 | SIGMASKTYPE mask; | |
3555 | mask = sigblockx (SIGIO); | |
3556 | kbd_buffer_store_event (&event); | |
3557 | sigsetmask (mask); | |
3558 | } | |
3559 | else | |
3560 | #endif | |
3561 | { | |
3562 | stop_polling (); | |
3563 | kbd_buffer_store_event (&event); | |
3564 | start_polling (); | |
3565 | } | |
a8015ab5 | 3566 | } |
284f4730 JB |
3567 | \f |
3568 | #ifndef VMS | |
3569 | ||
3570 | /* Read any terminal input already buffered up by the system | |
3571 | into the kbd_buffer, but do not wait. | |
3572 | ||
3573 | EXPECTED should be nonzero if the caller knows there is some input. | |
3574 | ||
3575 | Except on VMS, all input is read by this function. | |
3576 | If interrupt_input is nonzero, this function MUST be called | |
3577 | only when SIGIO is blocked. | |
3578 | ||
3579 | Returns the number of keyboard chars read, or -1 meaning | |
3580 | this is a bad time to try to read input. */ | |
3581 | ||
3582 | static int | |
3583 | read_avail_input (expected) | |
3584 | int expected; | |
3585 | { | |
3586 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3587 | register int i; | |
3588 | int nread; | |
3589 | ||
3590 | if (read_socket_hook) | |
3591 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
3592 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
3593 | expected, expected); | |
284f4730 JB |
3594 | else |
3595 | { | |
17270835 RS |
3596 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3597 | the kbd_buffer can really hold. That may prevent loss | |
3598 | of characters on some systems when input is stuffed at us. */ | |
3599 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3600 | int n_to_read; |
284f4730 | 3601 | |
58788063 | 3602 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
3603 | #ifdef WINDOWSNT |
3604 | return 0; | |
3605 | #else /* not WINDOWSNT */ | |
80e4aa30 | 3606 | #ifdef MSDOS |
58788063 RS |
3607 | n_to_read = dos_keysns (); |
3608 | if (n_to_read == 0) | |
3609 | return 0; | |
c3a2738c | 3610 | #else /* not MSDOS */ |
284f4730 JB |
3611 | #ifdef FIONREAD |
3612 | /* Find out how much input is available. */ | |
437f6112 | 3613 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3614 | /* Formerly simply reported no input, but that sometimes led to |
3615 | a failure of Emacs to terminate. | |
3616 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3617 | /* ??? Is it really right to send the signal just to this process |
3618 | rather than to the whole process group? | |
3619 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3620 | kill (getpid (), SIGHUP); |
58788063 | 3621 | if (n_to_read == 0) |
284f4730 | 3622 | return 0; |
58788063 RS |
3623 | if (n_to_read > sizeof cbuf) |
3624 | n_to_read = sizeof cbuf; | |
284f4730 | 3625 | #else /* no FIONREAD */ |
482952ef | 3626 | #if defined(USG) || defined(DGUX) |
284f4730 | 3627 | /* Read some input if available, but don't wait. */ |
58788063 | 3628 | n_to_read = sizeof cbuf; |
437f6112 | 3629 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
3630 | #else |
3631 | you lose; | |
3632 | #endif | |
3633 | #endif | |
80e4aa30 | 3634 | #endif /* not MSDOS */ |
bc536d84 | 3635 | #endif /* not WINDOWSNT */ |
284f4730 | 3636 | |
58788063 RS |
3637 | /* Now read; for one reason or another, this will not block. |
3638 | NREAD is set to the number of chars read. */ | |
9134775b | 3639 | do |
284f4730 | 3640 | { |
80e4aa30 RS |
3641 | #ifdef MSDOS |
3642 | cbuf[0] = dos_keyread(); | |
3643 | nread = 1; | |
3644 | #else | |
437f6112 | 3645 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 3646 | #endif |
762f2b92 | 3647 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3648 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3649 | This looks incorrect, but it isn't, because _BSD causes | |
3650 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3651 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3652 | if (nread == 0) |
80e4aa30 | 3653 | kill (0, SIGHUP); |
284f4730 | 3654 | #endif |
9134775b | 3655 | } |
791587ee KH |
3656 | while ( |
3657 | /* We used to retry the read if it was interrupted. | |
3658 | But this does the wrong thing when O_NDELAY causes | |
3659 | an EAGAIN error. Does anybody know of a situation | |
3660 | where a retry is actually needed? */ | |
3661 | #if 0 | |
3662 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3663 | #ifdef EFAULT |
9134775b | 3664 | || errno == EFAULT |
80e4aa30 | 3665 | #endif |
284f4730 | 3666 | #ifdef EBADSLT |
9134775b | 3667 | || errno == EBADSLT |
284f4730 | 3668 | #endif |
791587ee KH |
3669 | ) |
3670 | #else | |
3671 | 0 | |
3672 | #endif | |
3673 | ); | |
284f4730 JB |
3674 | |
3675 | #ifndef FIONREAD | |
02c2c53f | 3676 | #if defined (USG) || defined (DGUX) |
437f6112 | 3677 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 3678 | #endif /* USG or DGUX */ |
284f4730 JB |
3679 | #endif /* no FIONREAD */ |
3680 | for (i = 0; i < nread; i++) | |
3681 | { | |
3682 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3683 | buf[i].modifiers = 0; |
b04904fb | 3684 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3685 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3686 | if (meta_key != 2) |
3687 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
3688 | |
3689 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 3690 | #ifdef MULTI_FRAME |
18cd2eeb | 3691 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
3692 | #else |
3693 | buf[i].frame_or_window = Qnil; | |
3694 | #endif | |
284f4730 JB |
3695 | } |
3696 | } | |
3697 | ||
3698 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3699 | for (i = 0; i < nread; i++) | |
3700 | { | |
3701 | kbd_buffer_store_event (&buf[i]); | |
3702 | /* Don't look at input that follows a C-g too closely. | |
3703 | This reduces lossage due to autorepeat on C-g. */ | |
3704 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 3705 | && buf[i].code == quit_char) |
284f4730 JB |
3706 | break; |
3707 | } | |
3708 | ||
3709 | return nread; | |
3710 | } | |
3711 | #endif /* not VMS */ | |
3712 | \f | |
3713 | #ifdef SIGIO /* for entire page */ | |
3714 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3715 | ||
2ce30ea2 | 3716 | SIGTYPE |
284f4730 JB |
3717 | input_available_signal (signo) |
3718 | int signo; | |
3719 | { | |
3720 | /* Must preserve main program's value of errno. */ | |
3721 | int old_errno = errno; | |
3722 | #ifdef BSD4_1 | |
3723 | extern int select_alarmed; | |
3724 | #endif | |
3725 | ||
3726 | #ifdef USG | |
3727 | /* USG systems forget handlers when they are used; | |
3728 | must reestablish each time */ | |
3729 | signal (signo, input_available_signal); | |
3730 | #endif /* USG */ | |
3731 | ||
3732 | #ifdef BSD4_1 | |
3733 | sigisheld (SIGIO); | |
3734 | #endif | |
3735 | ||
ffd56f97 JB |
3736 | if (input_available_clear_time) |
3737 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3738 | |
3739 | while (1) | |
3740 | { | |
3741 | int nread; | |
3742 | nread = read_avail_input (1); | |
3743 | /* -1 means it's not ok to read the input now. | |
3744 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3745 | 0 means there was no keyboard input available. */ | |
3746 | if (nread <= 0) | |
3747 | break; | |
3748 | ||
3749 | #ifdef BSD4_1 | |
3750 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3751 | #endif | |
3752 | } | |
3753 | ||
3754 | #ifdef BSD4_1 | |
3755 | sigfree (); | |
3756 | #endif | |
3757 | errno = old_errno; | |
3758 | } | |
3759 | #endif /* SIGIO */ | |
ad163903 JB |
3760 | |
3761 | /* Send ourselves a SIGIO. | |
3762 | ||
3763 | This function exists so that the UNBLOCK_INPUT macro in | |
3764 | blockinput.h can have some way to take care of input we put off | |
3765 | dealing with, without assuming that every file which uses | |
3766 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3767 | void | |
3768 | reinvoke_input_signal () | |
3769 | { | |
3770 | #ifdef SIGIO | |
3771 | kill (0, SIGIO); | |
3772 | #endif | |
3773 | } | |
3774 | ||
3775 | ||
284f4730 JB |
3776 | \f |
3777 | /* Return the prompt-string of a sparse keymap. | |
3778 | This is the first element which is a string. | |
3779 | Return nil if there is none. */ | |
3780 | ||
3781 | Lisp_Object | |
3782 | map_prompt (map) | |
3783 | Lisp_Object map; | |
3784 | { | |
3785 | while (CONSP (map)) | |
3786 | { | |
3787 | register Lisp_Object tem; | |
3788 | tem = Fcar (map); | |
8c18cbfb | 3789 | if (STRINGP (tem)) |
284f4730 JB |
3790 | return tem; |
3791 | map = Fcdr (map); | |
3792 | } | |
3793 | return Qnil; | |
3794 | } | |
3795 | ||
b7c49376 RS |
3796 | static void menu_bar_item (); |
3797 | static void menu_bar_one_keymap (); | |
3798 | ||
3799 | /* These variables hold the vector under construction within | |
3800 | menu_bar_items and its subroutines, and the current index | |
3801 | for storing into that vector. */ | |
3802 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 3803 | static int menu_bar_items_index; |
5ec75a55 | 3804 | |
b7c49376 RS |
3805 | /* Return a vector of menu items for a menu bar, appropriate |
3806 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 3807 | KEY STRING MAPLIST. |
b7c49376 RS |
3808 | |
3809 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
3810 | |
3811 | Lisp_Object | |
b7c49376 RS |
3812 | menu_bar_items (old) |
3813 | Lisp_Object old; | |
5ec75a55 RS |
3814 | { |
3815 | /* The number of keymaps we're scanning right now, and the number of | |
3816 | keymaps we have allocated space for. */ | |
3817 | int nmaps; | |
3818 | ||
3819 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3820 | in the current keymaps, or nil where it is not a prefix. */ | |
3821 | Lisp_Object *maps; | |
3822 | ||
9f9c0e27 | 3823 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3824 | |
3825 | Lisp_Object result; | |
3826 | ||
3827 | int mapno; | |
47d319aa | 3828 | Lisp_Object oquit; |
5ec75a55 | 3829 | |
b7c49376 RS |
3830 | int i; |
3831 | ||
3832 | struct gcpro gcpro1; | |
3833 | ||
db60d856 JB |
3834 | /* In order to build the menus, we need to call the keymap |
3835 | accessors. They all call QUIT. But this function is called | |
3836 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3837 | quitting while building the menus. |
3838 | We do this instead of specbind because (1) errors will clear it anyway | |
3839 | and (2) this avoids risk of specpdl overflow. */ | |
3840 | oquit = Vinhibit_quit; | |
3841 | Vinhibit_quit = Qt; | |
db60d856 | 3842 | |
b7c49376 RS |
3843 | if (!NILP (old)) |
3844 | menu_bar_items_vector = old; | |
3845 | else | |
3846 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
3847 | menu_bar_items_index = 0; | |
3848 | ||
3849 | GCPRO1 (menu_bar_items_vector); | |
3850 | ||
5ec75a55 RS |
3851 | /* Build our list of keymaps. |
3852 | If we recognize a function key and replace its escape sequence in | |
3853 | keybuf with its symbol, or if the sequence starts with a mouse | |
3854 | click and we need to switch buffers, we jump back here to rebuild | |
3855 | the initial keymaps from the current buffer. */ | |
3856 | { | |
3857 | Lisp_Object *tmaps; | |
3858 | ||
d0a49716 RS |
3859 | /* Should overriding-local-map apply, here? */ |
3860 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 3861 | { |
d0a49716 RS |
3862 | if (NILP (Voverriding_local_map)) |
3863 | { | |
3864 | /* Yes, and it is nil. Use just global map. */ | |
3865 | nmaps = 1; | |
3866 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3867 | } | |
3868 | else | |
3869 | { | |
3870 | /* Yes, and it is non-nil. Use it and the global map. */ | |
3871 | nmaps = 2; | |
3872 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3873 | maps[0] = Voverriding_local_map; | |
3874 | } | |
9dd3131c RS |
3875 | } |
3876 | else | |
3877 | { | |
d0a49716 | 3878 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
3879 | nmaps = current_minor_maps (0, &tmaps) + 2; |
3880 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3881 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 3882 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 3883 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 3884 | #else |
9dd3131c | 3885 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3886 | #endif |
9dd3131c | 3887 | } |
7e6992e0 | 3888 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3889 | } |
3890 | ||
3891 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3892 | ||
3893 | result = Qnil; | |
3894 | ||
e58aa385 | 3895 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3896 | { |
3897 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3898 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3899 | else |
3900 | def = Qnil; | |
3901 | ||
3902 | tem = Fkeymapp (def); | |
3903 | if (!NILP (tem)) | |
b7c49376 | 3904 | menu_bar_one_keymap (def); |
5ec75a55 RS |
3905 | } |
3906 | ||
b7c49376 RS |
3907 | /* Move to the end those items that should be at the end. */ |
3908 | ||
9f9c0e27 RS |
3909 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
3910 | { | |
b7c49376 RS |
3911 | int i; |
3912 | int end = menu_bar_items_index; | |
3913 | ||
3914 | for (i = 0; i < end; i += 3) | |
3915 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3916 | { | |
0301268e RS |
3917 | Lisp_Object tem0, tem1, tem2; |
3918 | /* Move the item at index I to the end, | |
3919 | shifting all the others forward. */ | |
3920 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
3921 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
3922 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3923 | if (end > i + 3) | |
3924 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3925 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3926 | (end - i - 3) * sizeof (Lisp_Object)); | |
3927 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
3928 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
3929 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
3930 | break; | |
b7c49376 RS |
3931 | } |
3932 | } | |
9f9c0e27 | 3933 | |
b7c49376 RS |
3934 | /* Add nil, nil, nil at the end. */ |
3935 | i = menu_bar_items_index; | |
3936 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3937 | { | |
3938 | Lisp_Object tem; | |
3939 | int newsize = 2 * i; | |
3940 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3941 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3942 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3943 | menu_bar_items_vector = tem; | |
9f9c0e27 | 3944 | } |
b7c49376 RS |
3945 | /* Add this item. */ |
3946 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3947 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3948 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3949 | menu_bar_items_index = i; | |
a73c5e29 | 3950 | |
47d319aa | 3951 | Vinhibit_quit = oquit; |
b7c49376 RS |
3952 | UNGCPRO; |
3953 | return menu_bar_items_vector; | |
5ec75a55 RS |
3954 | } |
3955 | \f | |
3956 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 3957 | in menu_bar_items_vector. */ |
5ec75a55 | 3958 | |
b7c49376 RS |
3959 | static void |
3960 | menu_bar_one_keymap (keymap) | |
3961 | Lisp_Object keymap; | |
5ec75a55 RS |
3962 | { |
3963 | Lisp_Object tail, item, key, binding, item_string, table; | |
3964 | ||
3965 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 3966 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
3967 | { |
3968 | item = XCONS (tail)->car; | |
8c18cbfb | 3969 | if (CONSP (item)) |
5ec75a55 RS |
3970 | { |
3971 | key = XCONS (item)->car; | |
3972 | binding = XCONS (item)->cdr; | |
8c18cbfb | 3973 | if (CONSP (binding)) |
5ec75a55 RS |
3974 | { |
3975 | item_string = XCONS (binding)->car; | |
8c18cbfb | 3976 | if (STRINGP (item_string)) |
b7c49376 | 3977 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3978 | } |
e58aa385 | 3979 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3980 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 3981 | } |
8c18cbfb | 3982 | else if (VECTORP (item)) |
5ec75a55 RS |
3983 | { |
3984 | /* Loop over the char values represented in the vector. */ | |
3985 | int len = XVECTOR (item)->size; | |
3986 | int c; | |
3987 | for (c = 0; c < len; c++) | |
3988 | { | |
3989 | Lisp_Object character; | |
bb9e9bed | 3990 | XSETFASTINT (character, c); |
5ec75a55 | 3991 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 3992 | if (CONSP (binding)) |
5ec75a55 RS |
3993 | { |
3994 | item_string = XCONS (binding)->car; | |
8c18cbfb | 3995 | if (STRINGP (item_string)) |
b7c49376 | 3996 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3997 | } |
e58aa385 | 3998 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3999 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4000 | } |
4001 | } | |
4002 | } | |
5ec75a55 RS |
4003 | } |
4004 | ||
047a8ea7 RS |
4005 | /* This is used as the handler when calling internal_condition_case_1. */ |
4006 | ||
4007 | static Lisp_Object | |
4008 | menu_bar_item_1 (arg) | |
4009 | Lisp_Object arg; | |
4010 | { | |
4011 | return Qnil; | |
4012 | } | |
4013 | ||
f5e09c8b RS |
4014 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4015 | If there's already an item for KEY, add this DEF to it. */ | |
4016 | ||
b7c49376 RS |
4017 | static void |
4018 | menu_bar_item (key, item_string, def) | |
4019 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4020 | { |
e58aa385 | 4021 | Lisp_Object tem; |
5ec75a55 | 4022 | Lisp_Object enabled; |
b7c49376 | 4023 | int i; |
5ec75a55 | 4024 | |
e58aa385 RS |
4025 | if (EQ (def, Qundefined)) |
4026 | { | |
f5e09c8b | 4027 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4028 | discard any previously made menu bar item. */ |
b7c49376 RS |
4029 | |
4030 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4031 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4032 | { | |
4033 | if (menu_bar_items_index > i + 3) | |
4034 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4035 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4036 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4037 | menu_bar_items_index -= 3; | |
4038 | return; | |
4039 | } | |
8aa034e1 RS |
4040 | |
4041 | /* If there's no definition for this key yet, | |
4042 | just ignore `undefined'. */ | |
4043 | return; | |
e58aa385 RS |
4044 | } |
4045 | ||
5ec75a55 RS |
4046 | /* See if this entry is enabled. */ |
4047 | enabled = Qt; | |
4048 | ||
8c18cbfb | 4049 | if (SYMBOLP (def)) |
5ec75a55 RS |
4050 | { |
4051 | /* No property, or nil, means enable. | |
4052 | Otherwise, enable if value is not nil. */ | |
4053 | tem = Fget (def, Qmenu_enable); | |
4054 | if (!NILP (tem)) | |
047a8ea7 RS |
4055 | /* (condition-case nil (eval tem) |
4056 | (error nil)) */ | |
4057 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4058 | menu_bar_item_1); | |
5ec75a55 RS |
4059 | } |
4060 | ||
b7c49376 RS |
4061 | /* Ignore this item if it's not enabled. */ |
4062 | if (NILP (enabled)) | |
4063 | return; | |
5ec75a55 | 4064 | |
f5e09c8b | 4065 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4066 | for (i = 0; i < menu_bar_items_index; i += 3) |
4067 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4068 | break; | |
4069 | ||
f5e09c8b | 4070 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4071 | if (i == menu_bar_items_index) |
4072 | { | |
4073 | /* If vector is too small, get a bigger one. */ | |
4074 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4075 | { | |
4076 | Lisp_Object tem; | |
4077 | int newsize = 2 * i; | |
4078 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4079 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4080 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4081 | menu_bar_items_vector = tem; | |
4082 | } | |
4083 | /* Add this item. */ | |
4084 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4085 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4086 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4087 | menu_bar_items_index = i; |
4088 | } | |
f5e09c8b RS |
4089 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4090 | else | |
4091 | { | |
4092 | Lisp_Object old; | |
4093 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4094 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4095 | } | |
5ec75a55 RS |
4096 | } |
4097 | \f | |
dcc408a0 RS |
4098 | /* Read a character using menus based on maps in the array MAPS. |
4099 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4100 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4101 | |
4102 | PREV_EVENT is the previous input event, or nil if we are reading | |
4103 | the first event of a key sequence. | |
4104 | ||
6569cc8d JB |
4105 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4106 | if we used a mouse menu to read the input, or zero otherwise. If | |
4107 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4108 | |
4109 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4110 | and the strings associated with various map elements. |
4111 | ||
4112 | This can be done with X menus or with menus put in the minibuf. | |
4113 | These are done in different ways, depending on how the input will be read. | |
4114 | Menus using X are done after auto-saving in read-char, getting the input | |
4115 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4116 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4117 | |
7617111f | 4118 | static Lisp_Object |
8150596a | 4119 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4120 | int nmaps; |
4121 | Lisp_Object *maps; | |
4122 | Lisp_Object prev_event; | |
4123 | int *used_mouse_menu; | |
284f4730 | 4124 | { |
7d6de002 RS |
4125 | int mapno; |
4126 | register Lisp_Object name; | |
7d6de002 RS |
4127 | Lisp_Object rest, vector; |
4128 | ||
6569cc8d JB |
4129 | if (used_mouse_menu) |
4130 | *used_mouse_menu = 0; | |
284f4730 JB |
4131 | |
4132 | /* Use local over global Menu maps */ | |
4133 | ||
7d6de002 RS |
4134 | if (! menu_prompting) |
4135 | return Qnil; | |
4136 | ||
03361bcc RS |
4137 | /* Optionally disregard all but the global map. */ |
4138 | if (inhibit_local_menu_bar_menus) | |
4139 | { | |
4140 | maps += (nmaps - 1); | |
4141 | nmaps = 1; | |
4142 | } | |
4143 | ||
7d6de002 RS |
4144 | /* Get the menu name from the first map that has one (a prompt string). */ |
4145 | for (mapno = 0; mapno < nmaps; mapno++) | |
4146 | { | |
4147 | name = map_prompt (maps[mapno]); | |
4148 | if (!NILP (name)) | |
4149 | break; | |
4150 | } | |
284f4730 | 4151 | |
7d6de002 | 4152 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4153 | if (mapno >= nmaps) |
7d6de002 RS |
4154 | return Qnil; |
4155 | ||
87485d6f | 4156 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4157 | /* If we got to this point via a mouse click, |
4158 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4159 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4160 | { |
4161 | /* Display the menu and get the selection. */ | |
4162 | Lisp_Object *realmaps | |
4163 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4164 | Lisp_Object value; | |
4165 | int nmaps1 = 0; | |
4166 | ||
4167 | /* Use the maps that are not nil. */ | |
4168 | for (mapno = 0; mapno < nmaps; mapno++) | |
4169 | if (!NILP (maps[mapno])) | |
4170 | realmaps[nmaps1++] = maps[mapno]; | |
4171 | ||
4172 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4173 | if (CONSP (value)) |
4174 | { | |
4175 | /* If we got more than one event, put all but the first | |
4176 | onto this list to be read later. | |
4177 | Return just the first event now. */ | |
24597608 RS |
4178 | Vunread_command_events |
4179 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4180 | value = XCONS (value)->car; |
4181 | } | |
1c90c381 | 4182 | else if (NILP (value)) |
dcc408a0 | 4183 | value = Qt; |
6569cc8d JB |
4184 | if (used_mouse_menu) |
4185 | *used_mouse_menu = 1; | |
7d6de002 RS |
4186 | return value; |
4187 | } | |
87485d6f | 4188 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4189 | return Qnil ; |
4190 | } | |
4191 | ||
4192 | static Lisp_Object | |
24597608 | 4193 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4194 | int commandflag ; |
4195 | int nmaps; | |
4196 | Lisp_Object *maps; | |
4197 | { | |
4198 | int mapno; | |
4199 | register Lisp_Object name; | |
4200 | int nlength; | |
4201 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4202 | char *menu = (char *) alloca (width + 4); | |
4203 | int idx = -1; | |
9fdbfdf8 | 4204 | int nobindings = 1; |
8150596a RS |
4205 | Lisp_Object rest, vector; |
4206 | ||
4207 | if (! menu_prompting) | |
4208 | return Qnil; | |
4209 | ||
4210 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4211 | for (mapno = 0; mapno < nmaps; mapno++) | |
4212 | { | |
4213 | name = map_prompt (maps[mapno]); | |
4214 | if (!NILP (name)) | |
4215 | break; | |
4216 | } | |
4217 | ||
4218 | /* If we don't have any menus, just read a character normally. */ | |
4219 | if (mapno >= nmaps) | |
4220 | return Qnil; | |
284f4730 JB |
4221 | |
4222 | /* Prompt string always starts with map's prompt, and a space. */ | |
4223 | strcpy (menu, XSTRING (name)->data); | |
4224 | nlength = XSTRING (name)->size; | |
7d6de002 | 4225 | menu[nlength++] = ':'; |
284f4730 JB |
4226 | menu[nlength++] = ' '; |
4227 | menu[nlength] = 0; | |
4228 | ||
7d6de002 RS |
4229 | /* Start prompting at start of first map. */ |
4230 | mapno = 0; | |
4231 | rest = maps[mapno]; | |
284f4730 JB |
4232 | |
4233 | /* Present the documented bindings, a line at a time. */ | |
4234 | while (1) | |
4235 | { | |
4236 | int notfirst = 0; | |
4237 | int i = nlength; | |
4238 | Lisp_Object obj; | |
4239 | int ch; | |
8150596a | 4240 | int orig_defn_macro ; |
284f4730 | 4241 | |
284f4730 | 4242 | /* Loop over elements of map. */ |
7d6de002 | 4243 | while (i < width) |
284f4730 | 4244 | { |
7d6de002 | 4245 | Lisp_Object s, elt; |
284f4730 | 4246 | |
7d6de002 RS |
4247 | /* If reached end of map, start at beginning of next map. */ |
4248 | if (NILP (rest)) | |
4249 | { | |
4250 | mapno++; | |
4251 | /* At end of last map, wrap around to first map if just starting, | |
4252 | or end this line if already have something on it. */ | |
4253 | if (mapno == nmaps) | |
284f4730 | 4254 | { |
8150596a | 4255 | mapno = 0; |
40932d1a | 4256 | if (notfirst || nobindings) break; |
284f4730 | 4257 | } |
7d6de002 | 4258 | rest = maps[mapno]; |
284f4730 | 4259 | } |
7d6de002 RS |
4260 | |
4261 | /* Look at the next element of the map. */ | |
4262 | if (idx >= 0) | |
4263 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4264 | else |
7d6de002 RS |
4265 | elt = Fcar_safe (rest); |
4266 | ||
8c18cbfb | 4267 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4268 | { |
7d6de002 RS |
4269 | /* If we found a dense table in the keymap, |
4270 | advanced past it, but start scanning its contents. */ | |
4271 | rest = Fcdr_safe (rest); | |
4272 | vector = elt; | |
4273 | idx = 0; | |
284f4730 | 4274 | } |
7d6de002 RS |
4275 | else |
4276 | { | |
4277 | /* An ordinary element. */ | |
8150596a RS |
4278 | if ( idx < 0 ) |
4279 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4280 | else | |
4281 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4282 | if (!STRINGP (s)) |
7d6de002 RS |
4283 | /* Ignore the element if it has no prompt string. */ |
4284 | ; | |
4285 | /* If we have room for the prompt string, add it to this line. | |
4286 | If this is the first on the line, always add it. */ | |
8150596a | 4287 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4288 | || !notfirst) |
4289 | { | |
4290 | int thiswidth; | |
284f4730 | 4291 | |
7d6de002 RS |
4292 | /* Punctuate between strings. */ |
4293 | if (notfirst) | |
4294 | { | |
4295 | strcpy (menu + i, ", "); | |
4296 | i += 2; | |
4297 | } | |
4298 | notfirst = 1; | |
8150596a | 4299 | nobindings = 0 ; |
7d6de002 RS |
4300 | |
4301 | /* Add as much of string as fits. */ | |
4302 | thiswidth = XSTRING (s)->size; | |
4303 | if (thiswidth + i > width) | |
4304 | thiswidth = width - i; | |
4305 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4306 | i += thiswidth; | |
8150596a | 4307 | menu[i] = 0; |
7d6de002 RS |
4308 | } |
4309 | else | |
4310 | { | |
4311 | /* If this element does not fit, end the line now, | |
4312 | and save the element for the next line. */ | |
4313 | strcpy (menu + i, "..."); | |
4314 | break; | |
4315 | } | |
4316 | ||
4317 | /* Move past this element. */ | |
8150596a | 4318 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4319 | /* Handle reaching end of dense table. */ |
4320 | idx = -1; | |
4321 | if (idx >= 0) | |
4322 | idx++; | |
4323 | else | |
4324 | rest = Fcdr_safe (rest); | |
4325 | } | |
284f4730 JB |
4326 | } |
4327 | ||
4328 | /* Prompt with that and read response. */ | |
4329 | message1 (menu); | |
8150596a RS |
4330 | |
4331 | /* Make believe its not a keyboard macro in case the help char | |
4332 | is pressed. Help characters are not recorded because menu prompting | |
4333 | is not used on replay. | |
4334 | */ | |
4335 | orig_defn_macro = defining_kbd_macro ; | |
4336 | defining_kbd_macro = 0 ; | |
3cb81011 KH |
4337 | do |
4338 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4339 | while (BUFFERP (obj)); |
8150596a | 4340 | defining_kbd_macro = orig_defn_macro ; |
284f4730 | 4341 | |
8c18cbfb | 4342 | if (!INTEGERP (obj)) |
284f4730 JB |
4343 | return obj; |
4344 | else | |
4345 | ch = XINT (obj); | |
4346 | ||
f4255cd1 | 4347 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4348 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4349 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a RS |
4350 | { |
4351 | if ( defining_kbd_macro ) | |
4352 | store_kbd_macro_char(obj) ; | |
4353 | return obj; | |
4354 | } | |
4355 | /* Help char - go round again */ | |
284f4730 JB |
4356 | } |
4357 | } | |
284f4730 JB |
4358 | \f |
4359 | /* Reading key sequences. */ | |
4360 | ||
4361 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4362 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4363 | keymap, or nil otherwise. Return the index of the first keymap in | |
4364 | which KEY has any binding, or NMAPS if no map has a binding. | |
4365 | ||
4366 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4367 | followed by the corresponding non-meta character. Keymaps in | |
4368 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4369 | NEXT. | |
4370 | ||
88cb0656 JB |
4371 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4372 | unmodified. | |
4373 | ||
284f4730 JB |
4374 | NEXT may == CURRENT. */ |
4375 | ||
4376 | static int | |
4e50f26a | 4377 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4378 | Lisp_Object key; |
4379 | Lisp_Object *current, *defs, *next; | |
4380 | int nmaps; | |
4381 | { | |
4382 | int i, first_binding; | |
4383 | ||
4384 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4385 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4386 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4387 | { |
4388 | for (i = 0; i < nmaps; i++) | |
4389 | if (! NILP (current[i])) | |
4390 | { | |
cd21b839 | 4391 | next[i] = |
e74fbc70 | 4392 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4393 | |
4394 | /* Note that since we pass the resulting bindings through | |
4395 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4396 | disappear. */ | |
f4255cd1 | 4397 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4398 | } |
4399 | else | |
4400 | next[i] = Qnil; | |
4401 | ||
4402 | current = next; | |
18cd2eeb | 4403 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4404 | } |
4405 | ||
4406 | first_binding = nmaps; | |
4407 | for (i = nmaps - 1; i >= 0; i--) | |
4408 | { | |
4409 | if (! NILP (current[i])) | |
4410 | { | |
e74fbc70 | 4411 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4412 | if (! NILP (defs[i])) |
4413 | first_binding = i; | |
4414 | } | |
4415 | else | |
4416 | defs[i] = Qnil; | |
4417 | } | |
4418 | ||
284f4730 | 4419 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4420 | if (first_binding < nmaps) |
4421 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4422 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4423 | |
4424 | return first_binding; | |
4425 | } | |
4426 | ||
f4255cd1 JB |
4427 | /* Read a sequence of keys that ends with a non prefix character, |
4428 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4429 | Prompt with PROMPT. | |
284f4730 | 4430 | Return the length of the key sequence stored. |
dcc408a0 | 4431 | Return -1 if the user rejected a command menu. |
284f4730 | 4432 | |
f4255cd1 JB |
4433 | Echo starting immediately unless `prompt' is 0. |
4434 | ||
4435 | Where a key sequence ends depends on the currently active keymaps. | |
4436 | These include any minor mode keymaps active in the current buffer, | |
4437 | the current buffer's local map, and the global map. | |
4438 | ||
4439 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4440 | to see if some trailing subsequence might be the beginning of a | |
4441 | function key's sequence. If so, we try to read the whole function | |
4442 | key, and substitute its symbolic name into the key sequence. | |
4443 | ||
fbcd35bd JB |
4444 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4445 | `double-' events into similar click events, if that would make them | |
4446 | bound. We try to turn `triple-' events first into `double-' events, | |
4447 | then into clicks. | |
f4255cd1 JB |
4448 | |
4449 | If we get a mouse click in a mode line, vertical divider, or other | |
4450 | non-text area, we treat the click as if it were prefixed by the | |
4451 | symbol denoting that area - `mode-line', `vertical-line', or | |
4452 | whatever. | |
4453 | ||
4454 | If the sequence starts with a mouse click, we read the key sequence | |
4455 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4456 | |
f4255cd1 JB |
4457 | If the user switches frames in the midst of a key sequence, we put |
4458 | off the switch-frame event until later; the next call to | |
4459 | read_char will return it. */ | |
48e416d4 | 4460 | |
284f4730 JB |
4461 | static int |
4462 | read_key_sequence (keybuf, bufsize, prompt) | |
4463 | Lisp_Object *keybuf; | |
4464 | int bufsize; | |
84d91fda | 4465 | Lisp_Object prompt; |
284f4730 | 4466 | { |
f4255cd1 JB |
4467 | int count = specpdl_ptr - specpdl; |
4468 | ||
284f4730 JB |
4469 | /* How many keys there are in the current key sequence. */ |
4470 | int t; | |
4471 | ||
284f4730 JB |
4472 | /* The length of the echo buffer when we started reading, and |
4473 | the length of this_command_keys when we started reading. */ | |
4474 | int echo_start; | |
f4255cd1 | 4475 | int keys_start; |
284f4730 JB |
4476 | |
4477 | /* The number of keymaps we're scanning right now, and the number of | |
4478 | keymaps we have allocated space for. */ | |
4479 | int nmaps; | |
4480 | int nmaps_allocated = 0; | |
4481 | ||
284f4730 JB |
4482 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4483 | the current keymaps. */ | |
4484 | Lisp_Object *defs; | |
4485 | ||
f4255cd1 JB |
4486 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4487 | in the current keymaps, or nil where it is not a prefix. */ | |
4488 | Lisp_Object *submaps; | |
4489 | ||
4490 | /* The index in defs[] of the first keymap that has a binding for | |
4491 | this key sequence. In other words, the lowest i such that | |
4492 | defs[i] is non-nil. */ | |
284f4730 JB |
4493 | int first_binding; |
4494 | ||
f4255cd1 | 4495 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4496 | input key. |
4497 | ||
4498 | We use this to recover after recognizing a function key. Once we | |
4499 | realize that a suffix of the current key sequence is actually a | |
4500 | function key's escape sequence, we replace the suffix with the | |
4501 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4502 | contains a new and different key sequence, so the echo area, |
4503 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4504 | this situation, we set mock_input to t, set t to 0, and jump to | |
4505 | restart_sequence; the loop will read keys from keybuf up until | |
4506 | mock_input, thus rebuilding the state; and then it will resume | |
4507 | reading characters from the keyboard. */ | |
284f4730 JB |
4508 | int mock_input = 0; |
4509 | ||
253598e4 | 4510 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4511 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4512 | and fkey_map is its binding. | |
253598e4 | 4513 | |
f4255cd1 JB |
4514 | These might be > t, indicating that all function key scanning |
4515 | should hold off until t reaches them. We do this when we've just | |
4516 | recognized a function key, to avoid searching for the function | |
4517 | key's again in Vfunction_key_map. */ | |
284f4730 | 4518 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4519 | Lisp_Object fkey_map; |
284f4730 | 4520 | |
a612e298 RS |
4521 | /* Likewise, for key_translation_map. */ |
4522 | int keytran_start = 0, keytran_end = 0; | |
4523 | Lisp_Object keytran_map; | |
4524 | ||
cd21b839 JB |
4525 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4526 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4527 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4528 | |
51763820 BF |
4529 | /* See the comment below... */ |
4530 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4531 | Lisp_Object first_event; |
51763820 | 4532 | #endif |
4efda7dd | 4533 | |
bc536d84 RS |
4534 | /* Gets around Microsoft compiler limitations. */ |
4535 | int dummyFlag = 0; | |
4536 | ||
3b9189f8 RS |
4537 | struct buffer *starting_buffer; |
4538 | ||
e9bf89a0 RS |
4539 | /* Nonzero if we seem to have got the beginning of a binding |
4540 | in function_key_map. */ | |
4541 | int function_key_possible = 0; | |
00a78037 | 4542 | int key_translation_possible = 0; |
e9bf89a0 | 4543 | |
4efda7dd RS |
4544 | int junk; |
4545 | ||
4546 | last_nonmenu_event = Qnil; | |
4547 | ||
4548 | delayed_switch_frame = Qnil; | |
4549 | fkey_map = Vfunction_key_map; | |
a612e298 | 4550 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4551 | |
a612e298 | 4552 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4553 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4554 | fkey_start = fkey_end = bufsize + 1; | |
4555 | ||
a612e298 RS |
4556 | /* If there is no key-translation-map, turn off scanning. */ |
4557 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4558 | keytran_start = keytran_end = bufsize + 1; | |
4559 | ||
284f4730 JB |
4560 | if (INTERACTIVE) |
4561 | { | |
84d91fda RS |
4562 | if (!NILP (prompt)) |
4563 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4564 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4565 | /* This doesn't put in a dash if the echo buffer is empty, so |
4566 | you don't always see a dash hanging out in the minibuffer. */ | |
4567 | echo_dash (); | |
284f4730 JB |
4568 | } |
4569 | ||
f4255cd1 JB |
4570 | /* Record the initial state of the echo area and this_command_keys; |
4571 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4572 | if (INTERACTIVE) |
f4255cd1 JB |
4573 | echo_start = echo_length (); |
4574 | keys_start = this_command_key_count; | |
0a7f1fc0 | 4575 | |
51763820 BF |
4576 | #if defined (GOBBLE_FIRST_EVENT) |
4577 | /* This doesn't quite work, because some of the things that read_char | |
4578 | does cannot safely be bypassed. It seems too risky to try to make | |
4579 | this work right. */ | |
4580 | ||
4efda7dd RS |
4581 | /* Read the first char of the sequence specially, before setting |
4582 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4583 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4584 | &junk); |
51763820 | 4585 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4586 | |
7b4aedb9 JB |
4587 | /* We jump here when the key sequence has been thoroughly changed, and |
4588 | we need to rescan it starting from the beginning. When we jump here, | |
4589 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4590 | replay_sequence: |
7b4aedb9 | 4591 | |
3b9189f8 | 4592 | starting_buffer = current_buffer; |
e9bf89a0 | 4593 | function_key_possible = 0; |
00a78037 | 4594 | key_translation_possible = 0; |
3b9189f8 | 4595 | |
f4255cd1 | 4596 | /* Build our list of keymaps. |
07d2b8de JB |
4597 | If we recognize a function key and replace its escape sequence in |
4598 | keybuf with its symbol, or if the sequence starts with a mouse | |
4599 | click and we need to switch buffers, we jump back here to rebuild | |
4600 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4601 | { |
4602 | Lisp_Object *maps; | |
4603 | ||
9dd3131c | 4604 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4605 | { |
9dd3131c RS |
4606 | nmaps = 2; |
4607 | if (nmaps > nmaps_allocated) | |
4608 | { | |
4609 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4610 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4611 | nmaps_allocated = nmaps; | |
4612 | } | |
4613 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4614 | } |
9dd3131c RS |
4615 | else |
4616 | { | |
4617 | nmaps = current_minor_maps (0, &maps) + 2; | |
4618 | if (nmaps > nmaps_allocated) | |
4619 | { | |
4620 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4621 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4622 | nmaps_allocated = nmaps; | |
4623 | } | |
4624 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4625 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4626 | submaps[nmaps-2] = get_local_map (PT, current_buffer); |
497ba7a1 | 4627 | #else |
9dd3131c | 4628 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4629 | #endif |
9dd3131c | 4630 | } |
7e6992e0 | 4631 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4632 | } |
4633 | ||
4634 | /* Find an accurate initial value for first_binding. */ | |
4635 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4636 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4637 | break; |
4638 | ||
3b9189f8 | 4639 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4640 | t = 0; |
4641 | ||
4642 | /* These are no-ops the first time through, but if we restart, they | |
4643 | revert the echo area and this_command_keys to their original state. */ | |
4644 | this_command_key_count = keys_start; | |
40932d1a | 4645 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
4646 | echo_truncate (echo_start); |
4647 | ||
cca310da JB |
4648 | /* If the best binding for the current key sequence is a keymap, or |
4649 | we may be looking at a function key's escape sequence, keep on | |
4650 | reading. */ | |
253598e4 | 4651 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4652 | || (first_binding >= nmaps |
4653 | && fkey_start < t | |
4654 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 4655 | && mock_input <= fkey_start) |
00a78037 | 4656 | || (keytran_start < t && key_translation_possible) |
e9bf89a0 RS |
4657 | /* Don't return in the middle of a possible function key sequence, |
4658 | if the only bindings we found were via case conversion. | |
4659 | Thus, if ESC O a has a function-key-map translation | |
4660 | and ESC o has a binding, don't return after ESC O, | |
4661 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 4662 | ) |
284f4730 JB |
4663 | { |
4664 | Lisp_Object key; | |
7d6de002 | 4665 | int used_mouse_menu = 0; |
284f4730 | 4666 | |
7b4aedb9 JB |
4667 | /* Where the last real key started. If we need to throw away a |
4668 | key that has expanded into more than one element of keybuf | |
4669 | (say, a mouse click on the mode line which is being treated | |
4670 | as [mode-line (mouse-...)], then we backtrack to this point | |
4671 | of keybuf. */ | |
4672 | int last_real_key_start; | |
4673 | ||
0a7f1fc0 JB |
4674 | /* These variables are analogous to echo_start and keys_start; |
4675 | while those allow us to restart the entire key sequence, | |
4676 | echo_local_start and keys_local_start allow us to throw away | |
4677 | just one key. */ | |
f4255cd1 JB |
4678 | int echo_local_start, keys_local_start, local_first_binding; |
4679 | ||
284f4730 JB |
4680 | if (t >= bufsize) |
4681 | error ("key sequence too long"); | |
4682 | ||
f4255cd1 JB |
4683 | if (INTERACTIVE) |
4684 | echo_local_start = echo_length (); | |
4685 | keys_local_start = this_command_key_count; | |
4686 | local_first_binding = first_binding; | |
4687 | ||
4688 | replay_key: | |
0a7f1fc0 | 4689 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4690 | jumped back up to replay_key; in that case, these restore the |
4691 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4692 | loop. */ |
40932d1a | 4693 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4694 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4695 | this_command_key_count = keys_local_start; |
4696 | first_binding = local_first_binding; | |
4697 | ||
7e85b935 RS |
4698 | /* By default, assume each event is "real". */ |
4699 | last_real_key_start = t; | |
4700 | ||
f4255cd1 | 4701 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4702 | if (t < mock_input) |
4703 | { | |
4704 | key = keybuf[t]; | |
4705 | add_command_key (key); | |
a98ea3f9 RS |
4706 | if (echo_keystrokes) |
4707 | echo_char (key); | |
284f4730 | 4708 | } |
253598e4 JB |
4709 | |
4710 | /* If not, we should actually read a character. */ | |
284f4730 JB |
4711 | else |
4712 | { | |
a6d53864 RS |
4713 | struct buffer *buf = current_buffer; |
4714 | ||
84d91fda | 4715 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
a6d53864 | 4716 | &used_mouse_menu); |
284f4730 | 4717 | |
dcc408a0 RS |
4718 | /* read_char returns t when it shows a menu and the user rejects it. |
4719 | Just return -1. */ | |
4720 | if (EQ (key, Qt)) | |
4721 | return -1; | |
4722 | ||
f4255cd1 | 4723 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
4724 | Emacs 18 handles this by returning immediately with a |
4725 | zero, so that's what we'll do. */ | |
8c18cbfb | 4726 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 4727 | { |
f4255cd1 | 4728 | t = 0; |
bc536d84 RS |
4729 | /* The Microsoft C compiler can't handle the goto that |
4730 | would go here. */ | |
4731 | dummyFlag = 1; | |
4732 | break; | |
cd21b839 | 4733 | } |
284f4730 | 4734 | |
3cb81011 KH |
4735 | /* If the current buffer has been changed from under us, the |
4736 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 4737 | if (BUFFERP (key)) |
3cb81011 KH |
4738 | { |
4739 | mock_input = t; | |
4740 | goto replay_sequence; | |
4741 | } | |
4742 | ||
3b9189f8 RS |
4743 | /* If we have a quit that was typed in another frame, and |
4744 | quit_throw_to_read_char switched buffers, | |
4745 | replay to get the right keymap. */ | |
9343ab07 | 4746 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
4747 | { |
4748 | keybuf[t++] = key; | |
4749 | mock_input = t; | |
4750 | Vquit_flag = Qnil; | |
4751 | goto replay_sequence; | |
4752 | } | |
3cb81011 | 4753 | |
284f4730 | 4754 | Vquit_flag = Qnil; |
7e85b935 | 4755 | } |
284f4730 | 4756 | |
7e85b935 RS |
4757 | /* Clicks in non-text areas get prefixed by the symbol |
4758 | in their CHAR-ADDRESS field. For example, a click on | |
4759 | the mode line is prefixed by the symbol `mode-line'. | |
4760 | ||
4761 | Furthermore, key sequences beginning with mouse clicks | |
4762 | are read using the keymaps of the buffer clicked on, not | |
4763 | the current buffer. So we may have to switch the buffer | |
4764 | here. | |
4765 | ||
4766 | When we turn one event into two events, we must make sure | |
4767 | that neither of the two looks like the original--so that, | |
4768 | if we replay the events, they won't be expanded again. | |
4769 | If not for this, such reexpansion could happen either here | |
4770 | or when user programs play with this-command-keys. */ | |
4771 | if (EVENT_HAS_PARAMETERS (key)) | |
4772 | { | |
9b8eb840 | 4773 | Lisp_Object kind; |
cca310da | 4774 | |
9b8eb840 | 4775 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 4776 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 4777 | { |
9b8eb840 | 4778 | Lisp_Object window, posn; |
f4255cd1 | 4779 | |
9b8eb840 KH |
4780 | window = POSN_WINDOW (EVENT_START (key)); |
4781 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 4782 | if (CONSP (posn)) |
0a7f1fc0 | 4783 | { |
7e85b935 RS |
4784 | /* We're looking at the second event of a |
4785 | sequence which we expanded before. Set | |
4786 | last_real_key_start appropriately. */ | |
4787 | if (t > 0) | |
4788 | last_real_key_start = t - 1; | |
cd21b839 | 4789 | } |
7e85b935 RS |
4790 | |
4791 | /* Key sequences beginning with mouse clicks are | |
4792 | read using the keymaps in the buffer clicked on, | |
4793 | not the current buffer. If we're at the | |
4794 | beginning of a key sequence, switch buffers. */ | |
4795 | if (last_real_key_start == 0 | |
8c18cbfb KH |
4796 | && WINDOWP (window) |
4797 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 4798 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 4799 | { |
7e85b935 RS |
4800 | keybuf[t] = key; |
4801 | mock_input = t + 1; | |
4802 | ||
4803 | /* Arrange to go back to the original buffer once we're | |
4804 | done reading the key sequence. Note that we can't | |
4805 | use save_excursion_{save,restore} here, because they | |
4806 | save point as well as the current buffer; we don't | |
4807 | want to save point, because redisplay may change it, | |
4808 | to accommodate a Fset_window_start or something. We | |
4809 | don't want to do this at the top of the function, | |
4810 | because we may get input from a subprocess which | |
4811 | wants to change the selected window and stuff (say, | |
4812 | emacsclient). */ | |
4813 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4814 | ||
4815 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
4816 | goto replay_sequence; | |
0a7f1fc0 | 4817 | } |
8c18cbfb | 4818 | else if (SYMBOLP (posn)) |
5ec75a55 | 4819 | { |
7e85b935 RS |
4820 | /* Expand mode-line and scroll-bar events into two events: |
4821 | use posn as a fake prefix key. */ | |
5ec75a55 | 4822 | |
7e85b935 RS |
4823 | if (t + 1 >= bufsize) |
4824 | error ("key sequence too long"); | |
4825 | keybuf[t] = posn; | |
4826 | keybuf[t+1] = key; | |
4827 | mock_input = t + 2; | |
4828 | ||
4829 | /* Zap the position in key, so we know that we've | |
4830 | expanded it, and don't try to do so again. */ | |
4831 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4832 | = Fcons (posn, Qnil); | |
4833 | goto replay_key; | |
5ec75a55 | 4834 | } |
0a7f1fc0 | 4835 | } |
7e85b935 | 4836 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4837 | { |
7e85b935 RS |
4838 | /* If we're at the beginning of a key sequence, go |
4839 | ahead and return this event. If we're in the | |
4840 | midst of a key sequence, delay it until the end. */ | |
4841 | if (t > 0) | |
4842 | { | |
4843 | delayed_switch_frame = key; | |
4844 | goto replay_key; | |
4845 | } | |
4846 | } | |
7a80a6f6 RS |
4847 | else if (CONSP (XCONS (key)->cdr) |
4848 | && CONSP (EVENT_START (key)) | |
4849 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 4850 | { |
9b8eb840 | 4851 | Lisp_Object posn; |
7e85b935 | 4852 | |
9b8eb840 | 4853 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
4854 | /* Handle menu-bar events: |
4855 | insert the dummy prefix event `menu-bar'. */ | |
4856 | if (EQ (posn, Qmenu_bar)) | |
4857 | { | |
4858 | if (t + 1 >= bufsize) | |
4859 | error ("key sequence too long"); | |
4860 | /* Run the Lucid hook. */ | |
88ce066e RS |
4861 | if (!NILP (Vrun_hooks)) |
4862 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
4863 | /* If it has changed current-menubar from previous value, |
4864 | really recompute the menubar from the value. */ | |
4865 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
4866 | call0 (Qrecompute_lucid_menubar); | |
4867 | keybuf[t] = posn; | |
4868 | keybuf[t+1] = key; | |
4869 | ||
4870 | /* Zap the position in key, so we know that we've | |
4871 | expanded it, and don't try to do so again. */ | |
4872 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4873 | = Fcons (posn, Qnil); | |
4874 | ||
4875 | mock_input = t + 2; | |
4876 | goto replay_sequence; | |
4877 | } | |
8c18cbfb | 4878 | else if (CONSP (posn)) |
7e85b935 RS |
4879 | { |
4880 | /* We're looking at the second event of a | |
4881 | sequence which we expanded before. Set | |
4882 | last_real_key_start appropriately. */ | |
4883 | if (last_real_key_start == t && t > 0) | |
4884 | last_real_key_start = t - 1; | |
4885 | } | |
a6d53864 | 4886 | } |
284f4730 | 4887 | } |
f4255cd1 JB |
4888 | |
4889 | /* We have finally decided that KEY is something we might want | |
4890 | to look up. */ | |
284f4730 JB |
4891 | first_binding = (follow_key (key, |
4892 | nmaps - first_binding, | |
253598e4 | 4893 | submaps + first_binding, |
284f4730 | 4894 | defs + first_binding, |
4e50f26a | 4895 | submaps + first_binding) |
284f4730 | 4896 | + first_binding); |
0a7f1fc0 | 4897 | |
f4255cd1 | 4898 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
4899 | if (first_binding >= nmaps) |
4900 | { | |
9b8eb840 | 4901 | Lisp_Object head; |
0a7f1fc0 | 4902 | |
9b8eb840 | 4903 | head = EVENT_HEAD (key); |
7e85b935 RS |
4904 | if (EQ (head, Vhelp_char)) |
4905 | { | |
4906 | read_key_sequence_cmd = Vprefix_help_command; | |
4907 | keybuf[t++] = key; | |
4908 | last_nonmenu_event = key; | |
bc536d84 RS |
4909 | /* The Microsoft C compiler can't handle the goto that |
4910 | would go here. */ | |
4911 | dummyFlag = 1; | |
7e85b935 RS |
4912 | } |
4913 | ||
8c18cbfb | 4914 | if (SYMBOLP (head)) |
0a7f1fc0 | 4915 | { |
9b8eb840 KH |
4916 | Lisp_Object breakdown; |
4917 | int modifiers; | |
0a7f1fc0 | 4918 | |
9b8eb840 KH |
4919 | breakdown = parse_modifiers (head); |
4920 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
4921 | /* Attempt to reduce an unbound mouse event to a simpler |
4922 | event that is bound: | |
4923 | Drags reduce to clicks. | |
4924 | Double-clicks reduce to clicks. | |
4925 | Triple-clicks reduce to double-clicks, then to clicks. | |
4926 | Down-clicks are eliminated. | |
4927 | Double-downs reduce to downs, then are eliminated. | |
4928 | Triple-downs reduce to double-downs, then to downs, | |
4929 | then are eliminated. */ | |
4930 | if (modifiers & (down_modifier | drag_modifier | |
4931 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4932 | { |
559f9d04 RS |
4933 | while (modifiers & (down_modifier | drag_modifier |
4934 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
4935 | { |
4936 | Lisp_Object new_head, new_click; | |
4937 | if (modifiers & triple_modifier) | |
4938 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
4939 | else if (modifiers & double_modifier) |
4940 | modifiers &= ~double_modifier; | |
4941 | else if (modifiers & drag_modifier) | |
4942 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
4943 | else |
4944 | { | |
4945 | /* Dispose of this `down' event by simply jumping | |
4946 | back to replay_key, to get another event. | |
4947 | ||
4948 | Note that if this event came from mock input, | |
4949 | then just jumping back to replay_key will just | |
4950 | hand it to us again. So we have to wipe out any | |
4951 | mock input. | |
4952 | ||
4953 | We could delete keybuf[t] and shift everything | |
4954 | after that to the left by one spot, but we'd also | |
4955 | have to fix up any variable that points into | |
4956 | keybuf, and shifting isn't really necessary | |
4957 | anyway. | |
4958 | ||
4959 | Adding prefixes for non-textual mouse clicks | |
4960 | creates two characters of mock input, and both | |
4961 | must be thrown away. If we're only looking at | |
4962 | the prefix now, we can just jump back to | |
4963 | replay_key. On the other hand, if we've already | |
4964 | processed the prefix, and now the actual click | |
4965 | itself is giving us trouble, then we've lost the | |
4966 | state of the keymaps we want to backtrack to, and | |
4967 | we need to replay the whole sequence to rebuild | |
4968 | it. | |
4969 | ||
4970 | Beyond that, only function key expansion could | |
4971 | create more than two keys, but that should never | |
4972 | generate mouse events, so it's okay to zero | |
4973 | mock_input in that case too. | |
4974 | ||
4975 | Isn't this just the most wonderful code ever? */ | |
4976 | if (t == last_real_key_start) | |
4977 | { | |
4978 | mock_input = 0; | |
4979 | goto replay_key; | |
4980 | } | |
4981 | else | |
4982 | { | |
4983 | mock_input = last_real_key_start; | |
4984 | goto replay_sequence; | |
4985 | } | |
4986 | } | |
4987 | ||
27203ead RS |
4988 | new_head |
4989 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
4990 | new_click | |
4991 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
4992 | |
4993 | /* Look for a binding for this new key. follow_key | |
4994 | promises that it didn't munge submaps the | |
4995 | last time we called it, since key was unbound. */ | |
27203ead RS |
4996 | first_binding |
4997 | = (follow_key (new_click, | |
4998 | nmaps - local_first_binding, | |
4999 | submaps + local_first_binding, | |
5000 | defs + local_first_binding, | |
4e50f26a | 5001 | submaps + local_first_binding) |
27203ead | 5002 | + local_first_binding); |
fbcd35bd JB |
5003 | |
5004 | /* If that click is bound, go for it. */ | |
5005 | if (first_binding < nmaps) | |
5006 | { | |
5007 | key = new_click; | |
5008 | break; | |
5009 | } | |
5010 | /* Otherwise, we'll leave key set to the drag event. */ | |
5011 | } | |
0a7f1fc0 JB |
5012 | } |
5013 | } | |
5014 | } | |
5015 | ||
284f4730 | 5016 | keybuf[t++] = key; |
7d6de002 RS |
5017 | /* Normally, last_nonmenu_event gets the previous key we read. |
5018 | But when a mouse popup menu is being used, | |
5019 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5020 | event that preceded the first level of menu. */ | |
5021 | if (!used_mouse_menu) | |
5022 | last_nonmenu_event = key; | |
284f4730 JB |
5023 | |
5024 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5025 | off the end of it. We only want to scan real keyboard input |
5026 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5027 | re-reading old events, don't examine it. */ |
4e50f26a | 5028 | if (first_binding >= nmaps |
253598e4 | 5029 | && t >= mock_input) |
284f4730 JB |
5030 | { |
5031 | Lisp_Object fkey_next; | |
5032 | ||
e9bf89a0 RS |
5033 | /* Continue scan from fkey_end until we find a bound suffix. |
5034 | If we fail, increment fkey_start | |
5035 | and start fkey_end from there. */ | |
284f4730 JB |
5036 | while (fkey_end < t) |
5037 | { | |
f4255cd1 JB |
5038 | Lisp_Object key; |
5039 | ||
5040 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5041 | /* Look up meta-characters by prefixing them |
5042 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5043 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5044 | { |
e74fbc70 RS |
5045 | fkey_next |
5046 | = get_keymap_1 | |
f4255cd1 | 5047 | (get_keyelt |
e74fbc70 | 5048 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5049 | 0, 1); |
bb9e9bed | 5050 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5051 | } |
067ffa38 JB |
5052 | else |
5053 | fkey_next = fkey_map; | |
5054 | ||
e74fbc70 RS |
5055 | fkey_next |
5056 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5057 | |
7a80a6f6 RS |
5058 | #if 0 /* I didn't turn this on, because it might cause trouble |
5059 | for the mapping of return into C-m and tab into C-i. */ | |
5060 | /* Optionally don't map function keys into other things. | |
5061 | This enables the user to redefine kp- keys easily. */ | |
5062 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5063 | fkey_next = Qnil; | |
5064 | #endif | |
5065 | ||
1abe6abe RS |
5066 | /* If the function key map gives a function, not an |
5067 | array, then call the function with no args and use | |
5068 | its value instead. */ | |
5069 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5070 | && fkey_end == t) | |
5071 | { | |
5072 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5073 | Lisp_Object tem; | |
5074 | tem = fkey_next; | |
5075 | ||
5076 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5077 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5078 | UNGCPRO; |
5079 | /* If the function returned something invalid, | |
5080 | barf--don't ignore it. | |
5081 | (To ignore it safely, we would need to gcpro a bunch of | |
5082 | other variables.) */ | |
5083 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5084 | error ("Function in function-key-map returns invalid key sequence"); | |
5085 | } | |
5086 | ||
e9bf89a0 RS |
5087 | function_key_possible = ! NILP (fkey_next); |
5088 | ||
85bc5181 | 5089 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5090 | function key map and it's a suffix of the current |
85bc5181 | 5091 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5092 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5093 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5094 | && fkey_end == t) |
5095 | { | |
2e864a76 | 5096 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5097 | |
5098 | t = fkey_start + len; | |
284f4730 JB |
5099 | if (t >= bufsize) |
5100 | error ("key sequence too long"); | |
5101 | ||
f5ea6163 JB |
5102 | if (VECTORP (fkey_next)) |
5103 | bcopy (XVECTOR (fkey_next)->contents, | |
5104 | keybuf + fkey_start, | |
5105 | (t - fkey_start) * sizeof (keybuf[0])); | |
5106 | else if (STRINGP (fkey_next)) | |
5107 | { | |
5108 | int i; | |
5109 | ||
5110 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5111 | XSETFASTINT (keybuf[fkey_start + i], |
5112 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5113 | } |
284f4730 JB |
5114 | |
5115 | mock_input = t; | |
5116 | fkey_start = fkey_end = t; | |
32e6d806 | 5117 | fkey_map = Vfunction_key_map; |
284f4730 | 5118 | |
00a78037 RS |
5119 | /* Do pass the results through key-translation-map. */ |
5120 | keytran_start = keytran_end = 0; | |
5121 | keytran_map = Vkey_translation_map; | |
5122 | ||
f4255cd1 | 5123 | goto replay_sequence; |
284f4730 JB |
5124 | } |
5125 | ||
f4255cd1 | 5126 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5127 | |
a764a753 JB |
5128 | /* If we no longer have a bound suffix, try a new positions for |
5129 | fkey_start. */ | |
284f4730 JB |
5130 | if (NILP (fkey_map)) |
5131 | { | |
5132 | fkey_end = ++fkey_start; | |
5133 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5134 | function_key_possible = 0; |
284f4730 JB |
5135 | } |
5136 | } | |
5137 | } | |
a612e298 RS |
5138 | |
5139 | /* Look for this sequence in key-translation-map. */ | |
5140 | { | |
5141 | Lisp_Object keytran_next; | |
5142 | ||
5143 | /* Scan from keytran_end until we find a bound suffix. */ | |
5144 | while (keytran_end < t) | |
5145 | { | |
5146 | Lisp_Object key; | |
5147 | ||
5148 | key = keybuf[keytran_end++]; | |
5149 | /* Look up meta-characters by prefixing them | |
5150 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5151 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5152 | { |
5153 | keytran_next | |
5154 | = get_keymap_1 | |
5155 | (get_keyelt | |
5156 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5157 | 0, 1); | |
bb9e9bed | 5158 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5159 | } |
5160 | else | |
5161 | keytran_next = keytran_map; | |
5162 | ||
5163 | keytran_next | |
5164 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5165 | ||
1abe6abe RS |
5166 | /* If the key translation map gives a function, not an |
5167 | array, then call the function with no args and use | |
5168 | its value instead. */ | |
5169 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5170 | && keytran_end == t) | |
5171 | { | |
5172 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5173 | Lisp_Object tem; | |
5174 | tem = keytran_next; | |
5175 | ||
40932d1a | 5176 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5177 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5178 | UNGCPRO; |
5179 | /* If the function returned something invalid, | |
5180 | barf--don't ignore it. | |
5181 | (To ignore it safely, we would need to gcpro a bunch of | |
5182 | other variables.) */ | |
5183 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5184 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5185 | } |
5186 | ||
00a78037 RS |
5187 | key_translation_possible = ! NILP (keytran_next); |
5188 | ||
a612e298 | 5189 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5190 | key translation map and it's a suffix of the current |
a612e298 RS |
5191 | sequence (i.e. keytran_end == t), replace it with |
5192 | the binding and restart with keytran_start at the end. */ | |
5193 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5194 | && keytran_end == t) | |
5195 | { | |
2e864a76 | 5196 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5197 | |
5198 | t = keytran_start + len; | |
5199 | if (t >= bufsize) | |
5200 | error ("key sequence too long"); | |
5201 | ||
5202 | if (VECTORP (keytran_next)) | |
5203 | bcopy (XVECTOR (keytran_next)->contents, | |
5204 | keybuf + keytran_start, | |
5205 | (t - keytran_start) * sizeof (keybuf[0])); | |
5206 | else if (STRINGP (keytran_next)) | |
5207 | { | |
5208 | int i; | |
5209 | ||
5210 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5211 | XSETFASTINT (keybuf[keytran_start + i], |
5212 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5213 | } |
5214 | ||
5215 | mock_input = t; | |
5216 | keytran_start = keytran_end = t; | |
5217 | keytran_map = Vkey_translation_map; | |
5218 | ||
00a78037 RS |
5219 | /* Don't pass the results of key-translation-map |
5220 | through function-key-map. */ | |
5221 | fkey_start = fkey_end = t; | |
5222 | fkey_map = Vkey_translation_map; | |
5223 | ||
a612e298 RS |
5224 | goto replay_sequence; |
5225 | } | |
5226 | ||
5227 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5228 | ||
5229 | /* If we no longer have a bound suffix, try a new positions for | |
5230 | keytran_start. */ | |
5231 | if (NILP (keytran_map)) | |
5232 | { | |
5233 | keytran_end = ++keytran_start; | |
5234 | keytran_map = Vkey_translation_map; | |
00a78037 | 5235 | key_translation_possible = 0; |
a612e298 RS |
5236 | } |
5237 | } | |
5238 | } | |
4e50f26a RS |
5239 | |
5240 | /* If KEY is not defined in any of the keymaps, | |
5241 | and cannot be part of a function key or translation, | |
5242 | and is an upper case letter | |
5243 | use the corresponding lower-case letter instead. */ | |
5244 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5245 | && ! key_translation_possible |
8c18cbfb | 5246 | && INTEGERP (key) |
4e50f26a RS |
5247 | && ((((XINT (key) & 0x3ffff) |
5248 | < XSTRING (current_buffer->downcase_table)->size) | |
5249 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5250 | || (XINT (key) & shift_modifier))) | |
5251 | { | |
5252 | if (XINT (key) & shift_modifier) | |
5253 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5254 | else | |
5255 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5256 | | (XINT (key) & ~0x3ffff))); | |
5257 | ||
5258 | keybuf[t - 1] = key; | |
5259 | mock_input = t; | |
5260 | goto replay_sequence; | |
5261 | } | |
284f4730 JB |
5262 | } |
5263 | ||
bc536d84 RS |
5264 | if (!dummyFlag) |
5265 | read_key_sequence_cmd = (first_binding < nmaps | |
5266 | ? defs[first_binding] | |
5267 | : Qnil); | |
284f4730 | 5268 | |
cd21b839 | 5269 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5270 | unbind_to (count, Qnil); |
07f76a14 JB |
5271 | |
5272 | /* Occasionally we fabricate events, perhaps by expanding something | |
5273 | according to function-key-map, or by adding a prefix symbol to a | |
5274 | mouse click in the scroll bar or modeline. In this cases, return | |
5275 | the entire generated key sequence, even if we hit an unbound | |
5276 | prefix or a definition before the end. This means that you will | |
5277 | be able to push back the event properly, and also means that | |
5278 | read-key-sequence will always return a logical unit. | |
5279 | ||
5280 | Better ideas? */ | |
cca310da JB |
5281 | for (; t < mock_input; t++) |
5282 | { | |
a98ea3f9 RS |
5283 | if (echo_keystrokes) |
5284 | echo_char (keybuf[t]); | |
cca310da JB |
5285 | add_command_key (keybuf[t]); |
5286 | } | |
07f76a14 | 5287 | |
284f4730 JB |
5288 | return t; |
5289 | } | |
5290 | ||
a612e298 RS |
5291 | #if 0 /* This doc string is too long for some compilers. |
5292 | This commented-out definition serves for DOC. */ | |
c0a58692 | 5293 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
5294 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5295 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5296 | current local and global maps.\n\ | |
5297 | \n\ | |
c0a58692 RS |
5298 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5299 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5300 | as a continuation of the previous key.\n\ | |
284f4730 | 5301 | \n\ |
cb5df6ae JB |
5302 | A C-g typed while in this function is treated like any other character,\n\ |
5303 | and `quit-flag' is not set.\n\ | |
5304 | \n\ | |
5305 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5306 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5307 | of the selected window as normal.\n\ | |
ede41463 | 5308 | ""\n\ |
cb5df6ae JB |
5309 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5310 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5311 | or multi-click event is unbound, but the corresponding click event would\n\ |
5312 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5313 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5314 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5315 | \n\ |
5316 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5317 | lines separating windows, and scroll bars with imaginary keys\n\ |
5318 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
5319 | \n\ |
5320 | If the user switches frames in the middle of a key sequence, the\n\ | |
5321 | frame-switch event is put off until after the current key sequence.\n\ | |
5322 | \n\ | |
5323 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5324 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5325 | `function-key-map' for more details.") |
a612e298 RS |
5326 | (prompt, continue_echo) |
5327 | #endif | |
5328 | ||
5329 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, | |
5330 | 0) | |
c0a58692 RS |
5331 | (prompt, continue_echo) |
5332 | Lisp_Object prompt, continue_echo; | |
284f4730 JB |
5333 | { |
5334 | Lisp_Object keybuf[30]; | |
5335 | register int i; | |
5336 | struct gcpro gcpro1, gcpro2; | |
5337 | ||
5338 | if (!NILP (prompt)) | |
5339 | CHECK_STRING (prompt, 0); | |
5340 | QUIT; | |
5341 | ||
5342 | bzero (keybuf, sizeof keybuf); | |
5343 | GCPRO1 (keybuf[0]); | |
5344 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5345 | ||
daa37602 | 5346 | if (NILP (continue_echo)) |
c0a58692 RS |
5347 | this_command_key_count = 0; |
5348 | ||
84d91fda | 5349 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), prompt); |
284f4730 | 5350 | |
dcc408a0 RS |
5351 | if (i == -1) |
5352 | { | |
5353 | Vquit_flag = Qt; | |
5354 | QUIT; | |
5355 | } | |
284f4730 | 5356 | UNGCPRO; |
86e5706b | 5357 | return make_event_array (i, keybuf); |
284f4730 JB |
5358 | } |
5359 | \f | |
5360 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5361 | "Execute CMD as an editor command.\n\ | |
5362 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5363 | Optional second arg RECORD-FLAG non-nil\n\ | |
5364 | means unconditionally put this command in `command-history'.\n\ | |
5365 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5366 | (cmd, record) | |
5367 | Lisp_Object cmd, record; | |
5368 | { | |
5369 | register Lisp_Object final; | |
5370 | register Lisp_Object tem; | |
5371 | Lisp_Object prefixarg; | |
5372 | struct backtrace backtrace; | |
5373 | extern int debug_on_next_call; | |
5374 | ||
5375 | prefixarg = Vprefix_arg, Vprefix_arg = Qnil; | |
5376 | Vcurrent_prefix_arg = prefixarg; | |
5377 | debug_on_next_call = 0; | |
5378 | ||
8c18cbfb | 5379 | if (SYMBOLP (cmd)) |
284f4730 JB |
5380 | { |
5381 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5382 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5383 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5384 | } |
5385 | ||
5386 | while (1) | |
5387 | { | |
ffd56f97 | 5388 | final = Findirect_function (cmd); |
284f4730 JB |
5389 | |
5390 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5391 | do_autoload (final, cmd); | |
5392 | else | |
5393 | break; | |
5394 | } | |
5395 | ||
8c18cbfb | 5396 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
5397 | { |
5398 | /* If requested, place the macro in the command history. For | |
5399 | other sorts of commands, call-interactively takes care of | |
5400 | this. */ | |
5401 | if (!NILP (record)) | |
5402 | Vcommand_history | |
5403 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5404 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5405 | Vcommand_history); | |
5406 | ||
5407 | return Fexecute_kbd_macro (final, prefixarg); | |
5408 | } | |
8c18cbfb | 5409 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
5410 | { |
5411 | backtrace.next = backtrace_list; | |
5412 | backtrace_list = &backtrace; | |
5413 | backtrace.function = &Qcall_interactively; | |
5414 | backtrace.args = &cmd; | |
5415 | backtrace.nargs = 1; | |
5416 | backtrace.evalargs = 0; | |
5417 | ||
5418 | tem = Fcall_interactively (cmd, record); | |
5419 | ||
5420 | backtrace_list = backtrace.next; | |
5421 | return tem; | |
5422 | } | |
5423 | return Qnil; | |
5424 | } | |
5425 | \f | |
284f4730 JB |
5426 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5427 | 1, 1, "P", | |
5428 | "Read function name, then read its arguments and call it.") | |
5429 | (prefixarg) | |
5430 | Lisp_Object prefixarg; | |
5431 | { | |
5432 | Lisp_Object function; | |
5433 | char buf[40]; | |
5434 | Lisp_Object saved_keys; | |
5435 | struct gcpro gcpro1; | |
5436 | ||
b0f2a7bf KH |
5437 | saved_keys = Fvector (this_command_key_count, |
5438 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5439 | buf[0] = 0; |
5440 | GCPRO1 (saved_keys); | |
5441 | ||
5442 | if (EQ (prefixarg, Qminus)) | |
5443 | strcpy (buf, "- "); | |
5444 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5445 | strcpy (buf, "C-u "); | |
8c18cbfb | 5446 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
284f4730 | 5447 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); |
8c18cbfb | 5448 | else if (INTEGERP (prefixarg)) |
284f4730 JB |
5449 | sprintf (buf, "%d ", XINT (prefixarg)); |
5450 | ||
5451 | /* This isn't strictly correct if execute-extended-command | |
5452 | is bound to anything else. Perhaps it should use | |
5453 | this_command_keys? */ | |
5454 | strcat (buf, "M-x "); | |
5455 | ||
5456 | /* Prompt with buf, and then read a string, completing from and | |
5457 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5458 | any initial input. Save the command read on the extended-command |
03b4122a | 5459 | history list. */ |
284f4730 JB |
5460 | function = Fcompleting_read (build_string (buf), |
5461 | Vobarray, Qcommandp, | |
03b4122a | 5462 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5463 | |
1113d9db JB |
5464 | /* Set this_command_keys to the concatenation of saved_keys and |
5465 | function, followed by a RET. */ | |
284f4730 | 5466 | { |
1113d9db | 5467 | struct Lisp_String *str; |
b0f2a7bf | 5468 | Lisp_Object *keys; |
284f4730 JB |
5469 | int i; |
5470 | Lisp_Object tem; | |
5471 | ||
1113d9db JB |
5472 | this_command_key_count = 0; |
5473 | ||
b0f2a7bf KH |
5474 | keys = XVECTOR (saved_keys)->contents; |
5475 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5476 | add_command_key (keys[i]); | |
1113d9db JB |
5477 | |
5478 | str = XSTRING (function); | |
5479 | for (i = 0; i < str->size; i++) | |
5480 | { | |
bb9e9bed | 5481 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
5482 | add_command_key (tem); |
5483 | } | |
5484 | ||
bb9e9bed | 5485 | XSETFASTINT (tem, '\015'); |
1113d9db | 5486 | add_command_key (tem); |
284f4730 JB |
5487 | } |
5488 | ||
5489 | UNGCPRO; | |
5490 | ||
0a7f1fc0 | 5491 | function = Fintern (function, Qnil); |
284f4730 JB |
5492 | Vprefix_arg = prefixarg; |
5493 | this_command = function; | |
5494 | ||
5495 | return Fcommand_execute (function, Qt); | |
5496 | } | |
5497 | \f | |
5498 | ||
5499 | detect_input_pending () | |
5500 | { | |
5501 | if (!input_pending) | |
5502 | get_input_pending (&input_pending); | |
5503 | ||
5504 | return input_pending; | |
5505 | } | |
5506 | ||
ffd56f97 JB |
5507 | /* This is called in some cases before a possible quit. |
5508 | It cases the next call to detect_input_pending to recompute input_pending. | |
5509 | So calling this function unnecessarily can't do any harm. */ | |
5510 | clear_input_pending () | |
5511 | { | |
5512 | input_pending = 0; | |
5513 | } | |
5514 | ||
284f4730 JB |
5515 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5516 | "T if command input is currently available with no waiting.\n\ | |
5517 | Actually, the value is nil only if we can be sure that no input is available.") | |
5518 | () | |
5519 | { | |
24597608 | 5520 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5521 | return (Qt); |
5522 | ||
5523 | return detect_input_pending () ? Qt : Qnil; | |
5524 | } | |
5525 | ||
5526 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5527 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5528 | () |
5529 | { | |
5160df46 | 5530 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5531 | Lisp_Object val; |
5532 | ||
5533 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5534 | return Fvector (total_keys, keys); |
284f4730 JB |
5535 | else |
5536 | { | |
5160df46 JB |
5537 | val = Fvector (NUM_RECENT_KEYS, keys); |
5538 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5539 | XVECTOR (val)->contents, |
5540 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5541 | bcopy (keys, |
284f4730 JB |
5542 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5543 | recent_keys_index * sizeof (Lisp_Object)); | |
5544 | return val; | |
5545 | } | |
5546 | } | |
5547 | ||
5548 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5549 | "Return the key sequence that invoked this command.\n\ |
5550 | The value is a string or a vector.") | |
284f4730 JB |
5551 | () |
5552 | { | |
86e5706b RS |
5553 | return make_event_array (this_command_key_count, |
5554 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5555 | } |
5556 | ||
5557 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5558 | "Return the current depth in recursive edits.") | |
5559 | () | |
5560 | { | |
5561 | Lisp_Object temp; | |
bb9e9bed | 5562 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
5563 | return temp; |
5564 | } | |
5565 | ||
5566 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5567 | "FOpen dribble file: ", | |
9b2471df RS |
5568 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5569 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5570 | (file) |
5571 | Lisp_Object file; | |
5572 | { | |
5573 | if (NILP (file)) | |
5574 | { | |
5575 | fclose (dribble); | |
5576 | dribble = 0; | |
5577 | } | |
5578 | else | |
5579 | { | |
5580 | file = Fexpand_file_name (file, Qnil); | |
5581 | dribble = fopen (XSTRING (file)->data, "w"); | |
5582 | } | |
5583 | return Qnil; | |
5584 | } | |
5585 | ||
5586 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5587 | "Discard the contents of the terminal input buffer.\n\ | |
5588 | Also cancel any kbd macro being defined.") | |
5589 | () | |
5590 | { | |
5591 | defining_kbd_macro = 0; | |
5592 | update_mode_lines++; | |
5593 | ||
24597608 | 5594 | Vunread_command_events = Qnil; |
86e5706b | 5595 | unread_command_char = -1; |
284f4730 JB |
5596 | |
5597 | discard_tty_input (); | |
5598 | ||
ff0b5f4c JB |
5599 | /* Without the cast, GCC complains that this assignment loses the |
5600 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5601 | with that? */ | |
5602 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; | |
7b4aedb9 | 5603 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
284f4730 JB |
5604 | input_pending = 0; |
5605 | ||
5606 | return Qnil; | |
5607 | } | |
5608 | \f | |
5609 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5610 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5611 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
5612 | control, run a subshell instead.\n\n\ | |
284f4730 | 5613 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
5614 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
5615 | \n\ | |
bbdc2092 RS |
5616 | Before suspending, run the normal hook `suspend-hook'.\n\ |
5617 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
5618 | \n\ |
5619 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 5620 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
5621 | (stuffstring) |
5622 | Lisp_Object stuffstring; | |
5623 | { | |
3a69360c | 5624 | Lisp_Object tem; |
284f4730 JB |
5625 | int count = specpdl_ptr - specpdl; |
5626 | int old_height, old_width; | |
5627 | int width, height; | |
b7d2ebbf | 5628 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
5629 | extern init_sys_modes (); |
5630 | ||
5631 | if (!NILP (stuffstring)) | |
5632 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 5633 | |
1e95ed28 JB |
5634 | /* Run the functions in suspend-hook. */ |
5635 | if (!NILP (Vrun_hooks)) | |
5636 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 5637 | |
b7d2ebbf | 5638 | GCPRO1 (stuffstring); |
ff11dfa1 | 5639 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
5640 | reset_sys_modes (); |
5641 | /* sys_suspend can get an error if it tries to fork a subshell | |
5642 | and the system resources aren't available for that. */ | |
5643 | record_unwind_protect (init_sys_modes, 0); | |
5644 | stuff_buffered_input (stuffstring); | |
8026024c KH |
5645 | if (cannot_suspend) |
5646 | sys_subshell (); | |
5647 | else | |
5648 | sys_suspend (); | |
284f4730 JB |
5649 | unbind_to (count, Qnil); |
5650 | ||
5651 | /* Check if terminal/window size has changed. | |
5652 | Note that this is not useful when we are running directly | |
5653 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 5654 | get_frame_size (&width, &height); |
284f4730 | 5655 | if (width != old_width || height != old_height) |
f5ea6163 | 5656 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 5657 | |
1e95ed28 | 5658 | /* Run suspend-resume-hook. */ |
284f4730 JB |
5659 | if (!NILP (Vrun_hooks)) |
5660 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
5661 | ||
5662 | UNGCPRO; | |
5663 | return Qnil; | |
5664 | } | |
5665 | ||
5666 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 5667 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
5668 | |
5669 | stuff_buffered_input (stuffstring) | |
5670 | Lisp_Object stuffstring; | |
5671 | { | |
5672 | register unsigned char *p; | |
5673 | ||
5674 | /* stuff_char works only in BSD, versions 4.2 and up. */ | |
5675 | #ifdef BSD | |
5676 | #ifndef BSD4_1 | |
8c18cbfb | 5677 | if (STRINGP (stuffstring)) |
284f4730 JB |
5678 | { |
5679 | register int count; | |
5680 | ||
5681 | p = XSTRING (stuffstring)->data; | |
5682 | count = XSTRING (stuffstring)->size; | |
5683 | while (count-- > 0) | |
5684 | stuff_char (*p++); | |
5685 | stuff_char ('\n'); | |
5686 | } | |
5687 | /* Anything we have read ahead, put back for the shell to read. */ | |
5688 | while (kbd_fetch_ptr != kbd_store_ptr) | |
5689 | { | |
5690 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) | |
5691 | kbd_fetch_ptr = kbd_buffer; | |
5692 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
e9bf89a0 | 5693 | stuff_char (kbd_fetch_ptr->code); |
4bb994d1 | 5694 | kbd_fetch_ptr->kind = no_event; |
7b4aedb9 JB |
5695 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr |
5696 | - kbd_buffer] | |
5697 | = Qnil); | |
284f4730 JB |
5698 | kbd_fetch_ptr++; |
5699 | } | |
5700 | input_pending = 0; | |
5701 | #endif | |
5702 | #endif /* BSD and not BSD4_1 */ | |
5703 | } | |
5704 | \f | |
ffd56f97 JB |
5705 | set_waiting_for_input (time_to_clear) |
5706 | EMACS_TIME *time_to_clear; | |
284f4730 | 5707 | { |
ffd56f97 | 5708 | input_available_clear_time = time_to_clear; |
284f4730 JB |
5709 | |
5710 | /* Tell interrupt_signal to throw back to read_char, */ | |
5711 | waiting_for_input = 1; | |
5712 | ||
5713 | /* If interrupt_signal was called before and buffered a C-g, | |
5714 | make it run again now, to avoid timing error. */ | |
5715 | if (!NILP (Vquit_flag)) | |
5716 | quit_throw_to_read_char (); | |
284f4730 JB |
5717 | } |
5718 | ||
5719 | clear_waiting_for_input () | |
5720 | { | |
5721 | /* Tell interrupt_signal not to throw back to read_char, */ | |
5722 | waiting_for_input = 0; | |
ffd56f97 | 5723 | input_available_clear_time = 0; |
284f4730 JB |
5724 | } |
5725 | ||
5726 | /* This routine is called at interrupt level in response to C-G. | |
5727 | If interrupt_input, this is the handler for SIGINT. | |
5728 | Otherwise, it is called from kbd_buffer_store_event, | |
5729 | in handling SIGIO or SIGTINT. | |
5730 | ||
5731 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
5732 | immediately throw back to read_char. | |
5733 | ||
5734 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
5735 | This causes eval to throw, when it gets a chance. | |
5736 | If quit-flag is already non-nil, it stops the job right away. */ | |
5737 | ||
5738 | SIGTYPE | |
5739 | interrupt_signal () | |
5740 | { | |
5741 | char c; | |
5742 | /* Must preserve main program's value of errno. */ | |
5743 | int old_errno = errno; | |
284f4730 JB |
5744 | |
5745 | #ifdef USG | |
7a80a6f6 RS |
5746 | if (!read_socket_hook && NILP (Vwindow_system)) |
5747 | { | |
5748 | /* USG systems forget handlers when they are used; | |
5749 | must reestablish each time */ | |
5750 | signal (SIGINT, interrupt_signal); | |
5751 | signal (SIGQUIT, interrupt_signal); | |
5752 | } | |
284f4730 JB |
5753 | #endif /* USG */ |
5754 | ||
5755 | cancel_echoing (); | |
5756 | ||
d5045cf9 | 5757 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
5758 | { |
5759 | fflush (stdout); | |
5760 | reset_sys_modes (); | |
5761 | sigfree (); | |
5762 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
5763 | /* | |
5764 | * On systems which can suspend the current process and return to the original | |
5765 | * shell, this command causes the user to end up back at the shell. | |
5766 | * The "Auto-save" and "Abort" questions are not asked until | |
5767 | * the user elects to return to emacs, at which point he can save the current | |
5768 | * job and either dump core or continue. | |
5769 | */ | |
5770 | sys_suspend (); | |
5771 | #else | |
5772 | #ifdef VMS | |
5773 | if (sys_suspend () == -1) | |
5774 | { | |
5775 | printf ("Not running as a subprocess;\n"); | |
5776 | printf ("you can continue or abort.\n"); | |
5777 | } | |
5778 | #else /* not VMS */ | |
5779 | /* Perhaps should really fork an inferior shell? | |
5780 | But that would not provide any way to get back | |
5781 | to the original shell, ever. */ | |
5782 | printf ("No support for stopping a process on this operating system;\n"); | |
5783 | printf ("you can continue or abort.\n"); | |
5784 | #endif /* not VMS */ | |
5785 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
5786 | #ifdef MSDOS |
5787 | /* We must remain inside the screen area when the internal terminal | |
5788 | is used. Note that [Enter] is not echoed by dos. */ | |
5789 | cursor_to (0, 0); | |
5790 | #endif | |
284f4730 JB |
5791 | printf ("Auto-save? (y or n) "); |
5792 | fflush (stdout); | |
5793 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
5794 | { |
5795 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
5796 | #ifdef MSDOS |
5797 | printf ("\r\nAuto-save done"); | |
5798 | #else /* not MSDOS */ | |
9fd7d808 | 5799 | printf ("Auto-save done\n"); |
80e4aa30 | 5800 | #endif /* not MSDOS */ |
9fd7d808 | 5801 | } |
284f4730 | 5802 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
5803 | #ifdef MSDOS |
5804 | printf ("\r\nAbort? (y or n) "); | |
5805 | #else /* not MSDOS */ | |
284f4730 JB |
5806 | #ifdef VMS |
5807 | printf ("Abort (and enter debugger)? (y or n) "); | |
5808 | #else /* not VMS */ | |
5809 | printf ("Abort (and dump core)? (y or n) "); | |
5810 | #endif /* not VMS */ | |
80e4aa30 | 5811 | #endif /* not MSDOS */ |
284f4730 JB |
5812 | fflush (stdout); |
5813 | if (((c = getchar ()) & ~040) == 'Y') | |
5814 | abort (); | |
5815 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
5816 | #ifdef MSDOS |
5817 | printf ("\r\nContinuing...\r\n"); | |
5818 | #else /* not MSDOS */ | |
284f4730 | 5819 | printf ("Continuing...\n"); |
80e4aa30 | 5820 | #endif /* not MSDOS */ |
284f4730 JB |
5821 | fflush (stdout); |
5822 | init_sys_modes (); | |
5823 | } | |
5824 | else | |
5825 | { | |
5826 | /* If executing a function that wants to be interrupted out of | |
5827 | and the user has not deferred quitting by binding `inhibit-quit' | |
5828 | then quit right away. */ | |
5829 | if (immediate_quit && NILP (Vinhibit_quit)) | |
5830 | { | |
5831 | immediate_quit = 0; | |
5832 | sigfree (); | |
5833 | Fsignal (Qquit, Qnil); | |
5834 | } | |
5835 | else | |
5836 | /* Else request quit when it's safe */ | |
5837 | Vquit_flag = Qt; | |
5838 | } | |
5839 | ||
5840 | if (waiting_for_input && !echoing) | |
5841 | quit_throw_to_read_char (); | |
5842 | ||
5843 | errno = old_errno; | |
5844 | } | |
5845 | ||
5846 | /* Handle a C-g by making read_char return C-g. */ | |
5847 | ||
5848 | quit_throw_to_read_char () | |
5849 | { | |
5850 | quit_error_check (); | |
5851 | sigfree (); | |
5852 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 5853 | clear_waiting_for_input (); |
284f4730 JB |
5854 | input_pending = 0; |
5855 | ||
24597608 | 5856 | Vunread_command_events = Qnil; |
86e5706b | 5857 | unread_command_char = -1; |
284f4730 | 5858 | |
e6b01c14 JB |
5859 | #ifdef POLL_FOR_INPUT |
5860 | /* May be > 1 if in recursive minibuffer. */ | |
5861 | if (poll_suppress_count == 0) | |
5862 | abort (); | |
5863 | #endif | |
0dfcc832 | 5864 | #ifdef MULTI_FRAME |
8c18cbfb | 5865 | if (FRAMEP (internal_last_event_frame) |
e9bf89a0 | 5866 | && XFRAME (internal_last_event_frame) != selected_frame) |
3b9189f8 | 5867 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); |
0dfcc832 | 5868 | #endif |
e6b01c14 | 5869 | |
284f4730 JB |
5870 | _longjmp (getcjmp, 1); |
5871 | } | |
5872 | \f | |
5873 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
5874 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
5875 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
5876 | nil means use CBREAK mode.\n\ | |
5877 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 5878 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
5879 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
5880 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
5881 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
5882 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
5883 | See also `current-input-mode'.") | |
284f4730 JB |
5884 | (interrupt, flow, meta, quit) |
5885 | Lisp_Object interrupt, flow, meta, quit; | |
5886 | { | |
5887 | if (!NILP (quit) | |
8c18cbfb | 5888 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
5889 | error ("set-input-mode: QUIT must be an ASCII character"); |
5890 | ||
5891 | #ifdef POLL_FOR_INPUT | |
5892 | stop_polling (); | |
5893 | #endif | |
284f4730 JB |
5894 | |
5895 | reset_sys_modes (); | |
5896 | #ifdef SIGIO | |
5897 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
5898 | #ifdef NO_SOCK_SIGIO | |
5899 | if (read_socket_hook) | |
5900 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
5901 | else | |
5902 | #endif /* NO_SOCK_SIGIO */ | |
5903 | interrupt_input = !NILP (interrupt); | |
5904 | #else /* not SIGIO */ | |
5905 | interrupt_input = 0; | |
5906 | #endif /* not SIGIO */ | |
5907 | /* Our VMS input only works by interrupts, as of now. */ | |
5908 | #ifdef VMS | |
5909 | interrupt_input = 1; | |
5910 | #endif | |
5911 | flow_control = !NILP (flow); | |
b04904fb RS |
5912 | if (NILP (meta)) |
5913 | meta_key = 0; | |
5914 | else if (EQ (meta, Qt)) | |
5915 | meta_key = 1; | |
5916 | else | |
5917 | meta_key = 2; | |
284f4730 JB |
5918 | if (!NILP (quit)) |
5919 | /* Don't let this value be out of range. */ | |
5920 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
5921 | ||
5922 | init_sys_modes (); | |
34f04431 RS |
5923 | |
5924 | #ifdef POLL_FOR_INPUT | |
5925 | poll_suppress_count = 1; | |
5926 | start_polling (); | |
5927 | #endif | |
284f4730 JB |
5928 | return Qnil; |
5929 | } | |
80645119 JB |
5930 | |
5931 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
5932 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
5933 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
5934 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
5935 | nil, Emacs is using CBREAK mode.\n\ | |
5936 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
5937 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
5938 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
5939 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
5940 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
5941 | all 8 bits as the character code.\n\ | |
80645119 JB |
5942 | QUIT is the character Emacs currently uses to quit.\n\ |
5943 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 5944 | `set-input-mode'.") |
80645119 JB |
5945 | () |
5946 | { | |
5947 | Lisp_Object val[4]; | |
5948 | ||
5949 | val[0] = interrupt_input ? Qt : Qnil; | |
5950 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 5951 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 5952 | XSETFASTINT (val[3], quit_char); |
80645119 | 5953 | |
bf673a7a | 5954 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
5955 | } |
5956 | ||
284f4730 JB |
5957 | \f |
5958 | init_keyboard () | |
5959 | { | |
284f4730 JB |
5960 | /* This is correct before outermost invocation of the editor loop */ |
5961 | command_loop_level = -1; | |
5962 | immediate_quit = 0; | |
5963 | quit_char = Ctl ('g'); | |
24597608 | 5964 | Vunread_command_events = Qnil; |
86e5706b | 5965 | unread_command_char = -1; |
284f4730 | 5966 | total_keys = 0; |
9deb415a | 5967 | recent_keys_index = 0; |
284f4730 JB |
5968 | kbd_fetch_ptr = kbd_buffer; |
5969 | kbd_store_ptr = kbd_buffer; | |
2eb6bfbe | 5970 | #ifdef HAVE_MOUSE |
a9d77f1f | 5971 | do_mouse_tracking = Qnil; |
2eb6bfbe | 5972 | #endif |
284f4730 JB |
5973 | input_pending = 0; |
5974 | ||
07d2b8de | 5975 | #ifdef MULTI_FRAME |
8f805655 JB |
5976 | /* This means that command_loop_1 won't try to select anything the first |
5977 | time through. */ | |
3c370943 JB |
5978 | internal_last_event_frame = Qnil; |
5979 | Vlast_event_frame = internal_last_event_frame; | |
7b4aedb9 JB |
5980 | #endif |
5981 | ||
5982 | /* If we're running a dumped Emacs, we need to clear out | |
5983 | kbd_buffer_frame_or_window, in case some events got into it | |
5984 | before we dumped. | |
4bb994d1 | 5985 | |
7b4aedb9 JB |
5986 | If we're running an undumped Emacs, it hasn't been initialized by |
5987 | syms_of_keyboard yet. */ | |
4bb994d1 | 5988 | if (initialized) |
7b4aedb9 | 5989 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
07d2b8de | 5990 | |
7a80a6f6 | 5991 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
5992 | { |
5993 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 5994 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
5995 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
5996 | SIGQUIT and we can't tell which one it will give us. */ | |
5997 | signal (SIGQUIT, interrupt_signal); | |
5998 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 5999 | } |
284f4730 JB |
6000 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6001 | #ifdef SIGIO | |
7a80a6f6 RS |
6002 | if (!noninteractive) |
6003 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6004 | #endif /* SIGIO */ |
284f4730 JB |
6005 | |
6006 | /* Use interrupt input by default, if it works and noninterrupt input | |
6007 | has deficiencies. */ | |
6008 | ||
6009 | #ifdef INTERRUPT_INPUT | |
6010 | interrupt_input = 1; | |
6011 | #else | |
6012 | interrupt_input = 0; | |
6013 | #endif | |
6014 | ||
6015 | /* Our VMS input only works by interrupts, as of now. */ | |
6016 | #ifdef VMS | |
6017 | interrupt_input = 1; | |
6018 | #endif | |
6019 | ||
6020 | sigfree (); | |
6021 | dribble = 0; | |
6022 | ||
6023 | if (keyboard_init_hook) | |
6024 | (*keyboard_init_hook) (); | |
6025 | ||
6026 | #ifdef POLL_FOR_INPUT | |
6027 | poll_suppress_count = 1; | |
6028 | start_polling (); | |
6029 | #endif | |
6030 | } | |
6031 | ||
6032 | /* This type's only use is in syms_of_keyboard, to initialize the | |
6033 | event header symbols and put properties on them. */ | |
6034 | struct event_head { | |
6035 | Lisp_Object *var; | |
6036 | char *name; | |
6037 | Lisp_Object *kind; | |
6038 | }; | |
6039 | ||
6040 | struct event_head head_table[] = { | |
7b4aedb9 | 6041 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6042 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6043 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6044 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6045 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6046 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6047 | }; |
6048 | ||
6049 | syms_of_keyboard () | |
6050 | { | |
2e894dab RS |
6051 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6052 | staticpro (&Qdisabled_command_hook); | |
6053 | ||
284f4730 JB |
6054 | Qself_insert_command = intern ("self-insert-command"); |
6055 | staticpro (&Qself_insert_command); | |
6056 | ||
6057 | Qforward_char = intern ("forward-char"); | |
6058 | staticpro (&Qforward_char); | |
6059 | ||
6060 | Qbackward_char = intern ("backward-char"); | |
6061 | staticpro (&Qbackward_char); | |
6062 | ||
6063 | Qdisabled = intern ("disabled"); | |
6064 | staticpro (&Qdisabled); | |
6065 | ||
e58aa385 RS |
6066 | Qundefined = intern ("undefined"); |
6067 | staticpro (&Qundefined); | |
6068 | ||
86e5706b RS |
6069 | Qpre_command_hook = intern ("pre-command-hook"); |
6070 | staticpro (&Qpre_command_hook); | |
6071 | ||
6072 | Qpost_command_hook = intern ("post-command-hook"); | |
6073 | staticpro (&Qpost_command_hook); | |
6074 | ||
40932d1a RS |
6075 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6076 | staticpro (&Qcommand_hook_internal); | |
6077 | ||
284f4730 JB |
6078 | Qfunction_key = intern ("function-key"); |
6079 | staticpro (&Qfunction_key); | |
13b5e56c | 6080 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6081 | staticpro (&Qmouse_click); |
284f4730 | 6082 | |
598a9fa7 JB |
6083 | Qmenu_enable = intern ("menu-enable"); |
6084 | staticpro (&Qmenu_enable); | |
6085 | ||
284f4730 JB |
6086 | Qmode_line = intern ("mode-line"); |
6087 | staticpro (&Qmode_line); | |
e5d77022 JB |
6088 | Qvertical_line = intern ("vertical-line"); |
6089 | staticpro (&Qvertical_line); | |
3c370943 JB |
6090 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6091 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6092 | Qmenu_bar = intern ("menu-bar"); |
6093 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6094 | |
6095 | Qabove_handle = intern ("above-handle"); | |
6096 | staticpro (&Qabove_handle); | |
6097 | Qhandle = intern ("handle"); | |
6098 | staticpro (&Qhandle); | |
6099 | Qbelow_handle = intern ("below-handle"); | |
6100 | staticpro (&Qbelow_handle); | |
284f4730 | 6101 | |
cd21b839 | 6102 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6103 | staticpro (&Qevent_kind); |
88cb0656 JB |
6104 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6105 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6106 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6107 | staticpro (&Qevent_symbol_element_mask); | |
6108 | Qmodifier_cache = intern ("modifier-cache"); | |
6109 | staticpro (&Qmodifier_cache); | |
284f4730 | 6110 | |
48e416d4 RS |
6111 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6112 | staticpro (&Qrecompute_lucid_menubar); | |
6113 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6114 | staticpro (&Qactivate_menubar_hook); | |
6115 | ||
f4eef8b4 RS |
6116 | Qpolling_period = intern ("polling-period"); |
6117 | staticpro (&Qpolling_period); | |
6118 | ||
284f4730 JB |
6119 | { |
6120 | struct event_head *p; | |
6121 | ||
6122 | for (p = head_table; | |
6123 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6124 | p++) | |
6125 | { | |
6126 | *p->var = intern (p->name); | |
6127 | staticpro (p->var); | |
6128 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6129 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6130 | } |
6131 | } | |
6132 | ||
7b4aedb9 JB |
6133 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6134 | staticpro (&button_down_location); | |
88cb0656 JB |
6135 | |
6136 | { | |
6137 | int i; | |
6138 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6139 | ||
6140 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6141 | for (i = 0; i < len; i++) | |
86e5706b RS |
6142 | if (modifier_names[i]) |
6143 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6144 | staticpro (&modifier_symbols); |
6145 | } | |
6146 | ||
9deb415a JB |
6147 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6148 | staticpro (&recent_keys); | |
6149 | ||
6569cc8d | 6150 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6151 | staticpro (&this_command_keys); |
6569cc8d | 6152 | |
03b4122a BF |
6153 | Qextended_command_history = intern ("extended-command-history"); |
6154 | Fset (Qextended_command_history, Qnil); | |
6155 | staticpro (&Qextended_command_history); | |
6156 | ||
7b4aedb9 JB |
6157 | kbd_buffer_frame_or_window |
6158 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6159 | staticpro (&kbd_buffer_frame_or_window); | |
4bb994d1 | 6160 | |
24597608 RS |
6161 | accent_key_syms = Qnil; |
6162 | staticpro (&accent_key_syms); | |
6163 | ||
284f4730 JB |
6164 | func_key_syms = Qnil; |
6165 | staticpro (&func_key_syms); | |
6166 | ||
4e0e7d8e RS |
6167 | system_key_syms = Qnil; |
6168 | staticpro (&system_key_syms); | |
6169 | ||
284f4730 JB |
6170 | mouse_syms = Qnil; |
6171 | staticpro (&mouse_syms); | |
6172 | ||
cd21b839 JB |
6173 | unread_switch_frame = Qnil; |
6174 | staticpro (&unread_switch_frame); | |
6175 | ||
284f4730 JB |
6176 | defsubr (&Sread_key_sequence); |
6177 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6178 | #ifdef HAVE_MOUSE |
284f4730 | 6179 | defsubr (&Strack_mouse); |
2eb6bfbe | 6180 | #endif |
284f4730 JB |
6181 | defsubr (&Sinput_pending_p); |
6182 | defsubr (&Scommand_execute); | |
6183 | defsubr (&Srecent_keys); | |
6184 | defsubr (&Sthis_command_keys); | |
6185 | defsubr (&Ssuspend_emacs); | |
6186 | defsubr (&Sabort_recursive_edit); | |
6187 | defsubr (&Sexit_recursive_edit); | |
6188 | defsubr (&Srecursion_depth); | |
6189 | defsubr (&Stop_level); | |
6190 | defsubr (&Sdiscard_input); | |
6191 | defsubr (&Sopen_dribble_file); | |
6192 | defsubr (&Sset_input_mode); | |
80645119 | 6193 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6194 | defsubr (&Sexecute_extended_command); |
6195 | ||
284f4730 | 6196 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6197 | "Last input event that was part of a command."); |
6198 | ||
186cf719 | 6199 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6200 | "Last input event that was part of a command."); |
284f4730 | 6201 | |
7d6de002 | 6202 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6203 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6204 | Mouse menus give back keys that don't look like mouse events;\n\ |
6205 | this variable holds the actual mouse event that led to the menu,\n\ | |
6206 | so that you can determine whether the command was run by mouse or not."); | |
6207 | ||
284f4730 | 6208 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6209 | "Last input event."); |
6210 | ||
186cf719 | 6211 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6212 | "Last input event."); |
284f4730 | 6213 | |
24597608 | 6214 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6215 | "List of objects to be read as next command input events."); |
284f4730 | 6216 | |
86e5706b RS |
6217 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6218 | "If not -1, an object to be read as next command input event."); | |
6219 | ||
284f4730 JB |
6220 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6221 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6222 | turns into this character followed by foo."); | |
18cd2eeb | 6223 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6224 | |
6225 | DEFVAR_LISP ("last-command", &last_command, | |
6226 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6227 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
6228 | `this-command' was set to by that command."); | |
6229 | last_command = Qnil; | |
6230 | ||
6231 | DEFVAR_LISP ("this-command", &this_command, | |
6232 | "The command now being executed.\n\ | |
6233 | The command can set this variable; whatever is put here\n\ | |
6234 | will be in `last-command' during the following command."); | |
6235 | this_command = Qnil; | |
6236 | ||
6237 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6238 | "*Number of keyboard input characters between auto-saves.\n\ | |
6239 | Zero means disable autosaving due to number of characters typed."); | |
6240 | auto_save_interval = 300; | |
6241 | ||
6242 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6243 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6244 | Zero or nil means disable auto-saving due to idleness.\n\ |
6245 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6246 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6247 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6248 | |
6249 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6250 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6251 | echo_keystrokes = 1; | |
6252 | ||
6253 | DEFVAR_INT ("polling-period", &polling_period, | |
6254 | "*Interval between polling for input during Lisp execution.\n\ | |
6255 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6256 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6257 | Polling is automatically disabled in all other cases."); | |
6258 | polling_period = 2; | |
6259 | ||
564dc952 | 6260 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6261 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6262 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6263 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6264 | by position only."); |
aab06933 | 6265 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6266 | |
03361bcc RS |
6267 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6268 | "*Non-nil means inhibit local map menu bar menus."); | |
6269 | inhibit_local_menu_bar_menus = 0; | |
6270 | ||
284f4730 JB |
6271 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
6272 | "*Number of complete keys read from the keyboard so far."); | |
6273 | num_input_keys = 0; | |
6274 | ||
ff11dfa1 | 6275 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
fce33686 JB |
6276 | "*The frame in which the most recently read event occurred.\n\ |
6277 | If the last event came from a keyboard macro, this is set to `macro'."); | |
ff11dfa1 | 6278 | Vlast_event_frame = Qnil; |
284f4730 | 6279 | |
7e85b935 | 6280 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6281 | "Character to recognize as meaning Help.\n\ |
6282 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6283 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6284 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6285 | |
6286 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6287 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6288 | If the form returns a string, that string is displayed.\n\ |
6289 | If `help-form' is nil, the help char is not recognized."); | |
6290 | Vhelp_form = Qnil; | |
6291 | ||
7e85b935 RS |
6292 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6293 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6294 | This command is used only when there is no actual binding\n\ | |
6295 | for that character after that prefix key."); | |
6296 | Vprefix_help_command = Qnil; | |
6297 | ||
284f4730 JB |
6298 | DEFVAR_LISP ("top-level", &Vtop_level, |
6299 | "Form to evaluate when Emacs starts up.\n\ | |
6300 | Useful to set before you dump a modified Emacs."); | |
6301 | Vtop_level = Qnil; | |
6302 | ||
6303 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6304 | "String used as translate table for keyboard input, or nil.\n\ | |
6305 | Each character is looked up in this string and the contents used instead.\n\ | |
6306 | If string is of length N, character codes N and up are untranslated."); | |
6307 | Vkeyboard_translate_table = Qnil; | |
6308 | ||
a612e298 RS |
6309 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6310 | "Keymap of key translations that can override keymaps.\n\ | |
6311 | This keymap works like `function-key-map', but comes after that,\n\ | |
6312 | and applies even for keys that have ordinary bindings."); | |
6313 | Vkey_translation_map = Qnil; | |
6314 | ||
8026024c KH |
6315 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6316 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6317 | even if the operating system has support for stopping a process."); | |
6318 | cannot_suspend = 0; | |
6319 | ||
284f4730 | 6320 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6321 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6322 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6323 | for elements that have prompt strings.\n\ |
6324 | The menu is displayed on the screen\n\ | |
6325 | if X menus were enabled at configuration\n\ | |
6326 | time and the previous event was a mouse click prefix key.\n\ | |
6327 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6328 | menu_prompting = 1; |
6329 | ||
6330 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6331 | "Character to see next line of menu prompt.\n\ | |
6332 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 6333 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
6334 | |
6335 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6336 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6337 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6338 | character it reads. For example, after evaluating the expression\n\ | |
80645119 JB |
6339 | (setq extra-keyboard-modifiers ?\C-x)\n\ |
6340 | all input characters will have the control modifier applied to them.\n\ | |
6341 | \n\ | |
6342 | Note that the character ?\C-@, equivalent to the integer zero, does\n\ | |
6343 | not count as a control character; rather, it counts as a character\n\ | |
27203ead | 6344 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6345 | cancels any modification."); |
9fa4395d | 6346 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6347 | |
6348 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6349 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6350 | The command loop sets this to nil before each command,\n\ | |
6351 | and tests the value when the command returns.\n\ | |
6352 | Buffer modification stores t in this variable."); | |
6353 | Vdeactivate_mark = Qnil; | |
6354 | ||
b0f2a7bf KH |
6355 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6356 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6357 | Vcommand_hook_internal = Qnil; | |
6358 | ||
86e5706b | 6359 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6360 | "Normal hook run before each command is executed.\n\ |
6361 | While the hook is run, its value is temporarily set to nil\n\ | |
6362 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6363 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6364 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6365 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6366 | Vpre_command_hook = Qnil; |
6367 | ||
6368 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6369 | "Normal hook run after each command is executed.\n\ |
6370 | While the hook is run, its value is temporarily set to nil\n\ | |
6371 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6372 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6373 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6374 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6375 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6376 | |
6377 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6378 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6379 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6380 | |
9f9c0e27 RS |
6381 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6382 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6383 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6384 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6385 | |
9dd3131c RS |
6386 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6387 | "Keymap that overrides all other local keymaps.\n\ | |
6388 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6389 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6390 | Voverriding_local_map = Qnil; | |
6391 | ||
d0a49716 RS |
6392 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
6393 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
6394 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
6395 | and the minor mode maps regardless of `overriding-local-map'."); | |
6396 | Voverriding_local_map_menu_flag = Qnil; | |
6397 | ||
2eb6bfbe | 6398 | #ifdef HAVE_MOUSE |
e9bf89a0 RS |
6399 | DEFVAR_BOOL ("track-mouse", &do_mouse_tracking, |
6400 | "*Non-nil means generate motion events for mouse motion."); | |
2eb6bfbe | 6401 | #endif |
80e4aa30 | 6402 | |
270a208f RS |
6403 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6404 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6405 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6406 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6407 | and SYMBOL is its name."); |
a69a8ca2 | 6408 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6409 | |
6410 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6411 | "List of deferred actions to be performed at a later time.\n\ | |
6412 | The precise format isn't relevant here; we just check whether it is nil."); | |
6413 | Vdeferred_action_list = Qnil; | |
6414 | ||
6415 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6416 | "Function to call to handle deferred actions, after each command.\n\ | |
6417 | This function is called with no arguments after each command\n\ | |
6418 | whenever `deferred-action-list' is non-nil."); | |
6419 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
6420 | } |
6421 | ||
6422 | keys_of_keyboard () | |
6423 | { | |
6424 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6425 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6426 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6427 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6428 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6429 | } |