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 | ||
284f4730 JB |
75 | #ifdef HAVE_X_WINDOWS |
76 | extern Lisp_Object Vmouse_grabbed; | |
77 | ||
78 | /* Make all keyboard buffers much bigger when using X windows. */ | |
79 | #define KBD_BUFFER_SIZE 4096 | |
80 | #else /* No X-windows, character input */ | |
81 | #define KBD_BUFFER_SIZE 256 | |
82 | #endif /* No X-windows */ | |
83 | ||
84 | /* Following definition copied from eval.c */ | |
85 | ||
86 | struct backtrace | |
87 | { | |
88 | struct backtrace *next; | |
89 | Lisp_Object *function; | |
90 | Lisp_Object *args; /* Points to vector of args. */ | |
91 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
92 | args points to slot holding list of | |
93 | unevalled args */ | |
94 | char evalargs; | |
95 | }; | |
96 | ||
97 | /* Non-nil disable property on a command means | |
98 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 99 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
100 | |
101 | #define NUM_RECENT_KEYS (100) | |
102 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
103 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 104 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 105 | |
6569cc8d JB |
106 | /* Vector holding the key sequence that invoked the current command. |
107 | It is reused for each command, and it may be longer than the current | |
108 | sequence; this_command_key_count indicates how many elements | |
109 | actually mean something. | |
110 | It's easier to staticpro a single Lisp_Object than an array. */ | |
111 | Lisp_Object this_command_keys; | |
112 | int this_command_key_count; | |
284f4730 JB |
113 | |
114 | extern int minbuf_level; | |
115 | ||
116 | extern struct backtrace *backtrace_list; | |
117 | ||
118 | /* Nonzero means do menu prompting. */ | |
119 | static int menu_prompting; | |
120 | ||
121 | /* Character to see next line of menu prompt. */ | |
122 | static Lisp_Object menu_prompt_more_char; | |
123 | ||
124 | /* For longjmp to where kbd input is being done. */ | |
125 | static jmp_buf getcjmp; | |
126 | ||
127 | /* True while doing kbd input. */ | |
128 | int waiting_for_input; | |
129 | ||
130 | /* True while displaying for echoing. Delays C-g throwing. */ | |
131 | static int echoing; | |
132 | ||
80e4aa30 | 133 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
134 | int immediate_quit; |
135 | ||
136 | /* Character to recognize as the help char. */ | |
7e85b935 | 137 | Lisp_Object Vhelp_char; |
284f4730 JB |
138 | |
139 | /* Form to execute when help char is typed. */ | |
140 | Lisp_Object Vhelp_form; | |
141 | ||
7e85b935 RS |
142 | /* Command to run when the help character follows a prefix key. */ |
143 | Lisp_Object Vprefix_help_command; | |
144 | ||
9f9c0e27 RS |
145 | /* List of items that should move to the end of the menu bar. */ |
146 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 147 | |
284f4730 JB |
148 | /* Character that causes a quit. Normally C-g. |
149 | ||
150 | If we are running on an ordinary terminal, this must be an ordinary | |
151 | ASCII char, since we want to make it our interrupt character. | |
152 | ||
153 | If we are not running on an ordinary terminal, it still needs to be | |
154 | an ordinary ASCII char. This character needs to be recognized in | |
155 | the input interrupt handler. At this point, the keystroke is | |
156 | represented as a struct input_event, while the desired quit | |
157 | character is specified as a lispy event. The mapping from struct | |
158 | input_events to lispy events cannot run in an interrupt handler, | |
159 | and the reverse mapping is difficult for anything but ASCII | |
160 | keystrokes. | |
161 | ||
162 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
163 | ASCII character. */ | |
164 | int quit_char; | |
165 | ||
166 | extern Lisp_Object current_global_map; | |
167 | extern int minibuf_level; | |
168 | ||
9dd3131c RS |
169 | /* If non-nil, this is a map that overrides all other local maps. */ |
170 | Lisp_Object Voverriding_local_map; | |
171 | ||
284f4730 JB |
172 | /* Current depth in recursive edits. */ |
173 | int command_loop_level; | |
174 | ||
175 | /* Total number of times command_loop has read a key sequence. */ | |
176 | int num_input_keys; | |
177 | ||
178 | /* Last input character read as a command. */ | |
179 | Lisp_Object last_command_char; | |
180 | ||
7d6de002 RS |
181 | /* Last input character read as a command, not counting menus |
182 | reached by the mouse. */ | |
183 | Lisp_Object last_nonmenu_event; | |
184 | ||
284f4730 JB |
185 | /* Last input character read for any purpose. */ |
186 | Lisp_Object last_input_char; | |
187 | ||
dbc4e1c1 | 188 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 189 | Lisp_Object Vunread_command_events; |
284f4730 | 190 | |
86e5706b RS |
191 | /* If not -1, an event to be read as subsequent command input. */ |
192 | int unread_command_char; | |
193 | ||
cd21b839 JB |
194 | /* If not Qnil, this is a switch-frame event which we decided to put |
195 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 196 | next command input, after any unread_command_events. |
8f805655 JB |
197 | |
198 | read_key_sequence uses this to delay switch-frame events until the | |
199 | end of the key sequence; Fread_char uses it to put off switch-frame | |
200 | events until a non-ASCII event is acceptable as input. */ | |
201 | Lisp_Object unread_switch_frame; | |
cd21b839 | 202 | |
9fa4395d RS |
203 | /* A mask of extra modifier bits to put into every keyboard char. */ |
204 | int extra_keyboard_modifiers; | |
205 | ||
284f4730 JB |
206 | /* Char to use as prefix when a meta character is typed in. |
207 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
208 | ||
209 | Lisp_Object meta_prefix_char; | |
210 | ||
211 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
212 | static int last_non_minibuf_size; | |
213 | ||
06ef7355 | 214 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
215 | static Lisp_Object Vauto_save_timeout; |
216 | ||
217 | /* Total number of times read_char has returned. */ | |
218 | int num_input_chars; | |
219 | ||
51172b6d RS |
220 | /* Total number of times read_char has returned, outside of macros. */ |
221 | int num_nonmacro_input_chars; | |
222 | ||
284f4730 JB |
223 | /* Auto-save automatically when this many characters have been typed |
224 | since the last time. */ | |
225 | ||
226 | static int auto_save_interval; | |
227 | ||
51172b6d | 228 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
229 | |
230 | int last_auto_save; | |
231 | ||
232 | /* Last command executed by the editor command loop, not counting | |
233 | commands that set the prefix argument. */ | |
234 | ||
235 | Lisp_Object last_command; | |
236 | ||
237 | /* The command being executed by the command loop. | |
238 | Commands may set this, and the value set will be copied into last_command | |
239 | instead of the actual command. */ | |
240 | Lisp_Object this_command; | |
241 | ||
b453f72e KH |
242 | /* The value of point when the last command was executed. */ |
243 | int last_point_position; | |
244 | ||
047688cb RS |
245 | /* The buffer that was current when the last command was started. */ |
246 | Lisp_Object last_point_position_buffer; | |
247 | ||
07d2b8de | 248 | #ifdef MULTI_FRAME |
fce33686 | 249 | /* The frame in which the last input event occurred, or Qmacro if the |
3c370943 JB |
250 | last event came from a macro. We use this to determine when to |
251 | generate switch-frame events. This may be cleared by functions | |
252 | like Fselect_frame, to make sure that a switch-frame event is | |
253 | generated by the next character. */ | |
254 | Lisp_Object internal_last_event_frame; | |
a974bea1 | 255 | #endif |
3c370943 JB |
256 | |
257 | /* A user-visible version of the above, intended to allow users to | |
258 | figure out where the last event came from, if the event doesn't | |
259 | carry that information itself (i.e. if it was a character). */ | |
ff11dfa1 | 260 | Lisp_Object Vlast_event_frame; |
284f4730 | 261 | |
1113d9db JB |
262 | /* The timestamp of the last input event we received from the X server. |
263 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
264 | unsigned long last_event_timestamp; |
265 | ||
266 | Lisp_Object Qself_insert_command; | |
267 | Lisp_Object Qforward_char; | |
268 | Lisp_Object Qbackward_char; | |
e58aa385 | 269 | Lisp_Object Qundefined; |
284f4730 JB |
270 | |
271 | /* read_key_sequence stores here the command definition of the | |
272 | key sequence that it reads. */ | |
273 | Lisp_Object read_key_sequence_cmd; | |
274 | ||
275 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
276 | Lisp_Object Vtop_level; | |
277 | ||
278 | /* User-supplied string to translate input characters through. */ | |
279 | Lisp_Object Vkeyboard_translate_table; | |
280 | ||
281 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
282 | extern Lisp_Object Vfunction_key_map; | |
283 | ||
a612e298 RS |
284 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
285 | Lisp_Object Vkey_translation_map; | |
286 | ||
86e5706b RS |
287 | /* Non-nil means deactivate the mark at end of this command. */ |
288 | Lisp_Object Vdeactivate_mark; | |
289 | ||
48e416d4 RS |
290 | /* Menu bar specified in Lucid Emacs fashion. */ |
291 | ||
292 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
293 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
294 | ||
86e5706b RS |
295 | /* Hooks to run before and after each command. */ |
296 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
297 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 298 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 299 | |
8a792f3a RS |
300 | /* List of deferred actions to be performed at a later time. |
301 | The precise format isn't relevant here; we just check whether it is nil. */ | |
302 | Lisp_Object Vdeferred_action_list; | |
303 | ||
304 | /* Function to call to handle deferred actions, when there are any. */ | |
305 | Lisp_Object Vdeferred_action_function; | |
306 | ||
284f4730 JB |
307 | /* File in which we write all commands we read. */ |
308 | FILE *dribble; | |
309 | ||
310 | /* Nonzero if input is available. */ | |
311 | int input_pending; | |
312 | ||
b04904fb RS |
313 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
314 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
315 | ||
284f4730 JB |
316 | int meta_key; |
317 | ||
318 | extern char *pending_malloc_warning; | |
319 | ||
320 | /* Circular buffer for pre-read keyboard input. */ | |
321 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
322 | ||
7b4aedb9 | 323 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. |
4bb994d1 | 324 | |
7b4aedb9 JB |
325 | The interrupt-level event handlers will never enqueue an event on a |
326 | frame which is not in Vframe_list, and once an event is dequeued, | |
3c370943 JB |
327 | internal_last_event_frame or the event itself points to the frame. |
328 | So that's all fine. | |
4bb994d1 JB |
329 | |
330 | But while the event is sitting in the queue, it's completely | |
331 | unprotected. Suppose the user types one command which will run for | |
332 | a while and then delete a frame, and then types another event at | |
333 | the frame that will be deleted, before the command gets around to | |
334 | it. Suppose there are no references to this frame elsewhere in | |
335 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
336 | have an event referring to a freed frame, which will crash Emacs | |
337 | when it is dequeued. | |
338 | ||
3c370943 | 339 | Similar things happen when an event on a scroll bar is enqueued; the |
7b4aedb9 | 340 | window may be deleted while the event is in the queue. |
4bb994d1 | 341 | |
7b4aedb9 JB |
342 | So, we use this vector to protect the frame_or_window field in the |
343 | event queue. That way, they'll be dequeued as dead frames or | |
344 | windows, but still valid lisp objects. | |
345 | ||
346 | If kbd_buffer[i].kind != no_event, then | |
347 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
348 | == kbd_buffer[i].frame_or_window. */ | |
349 | static Lisp_Object kbd_buffer_frame_or_window; | |
4bb994d1 | 350 | |
284f4730 JB |
351 | /* Pointer to next available character in kbd_buffer. |
352 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
353 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
354 | next available char is in kbd_buffer[0]. */ | |
355 | static struct input_event *kbd_fetch_ptr; | |
356 | ||
357 | /* Pointer to next place to store character in kbd_buffer. This | |
358 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
359 | character should go in kbd_buffer[0]. */ | |
ff0b5f4c JB |
360 | #ifdef __STDC__ |
361 | volatile | |
362 | #endif | |
284f4730 JB |
363 | static struct input_event *kbd_store_ptr; |
364 | ||
365 | /* The above pair of variables forms a "queue empty" flag. When we | |
366 | enqueue a non-hook event, we increment kbd_write_count. When we | |
367 | dequeue a non-hook event, we increment kbd_read_count. We say that | |
4bb994d1 | 368 | there is input available iff the two counters are not equal. |
284f4730 JB |
369 | |
370 | Why not just have a flag set and cleared by the enqueuing and | |
371 | dequeuing functions? Such a flag could be screwed up by interrupts | |
372 | at inopportune times. */ | |
373 | ||
663258f2 | 374 | /* If this flag is non-zero, we check mouse_moved to see when the |
4bb994d1 | 375 | mouse moves, and motion events will appear in the input stream. If |
663258f2 JB |
376 | it is zero, mouse motion is ignored. */ |
377 | static int do_mouse_tracking; | |
284f4730 JB |
378 | |
379 | /* The window system handling code should set this if the mouse has | |
380 | moved since the last call to the mouse_position_hook. Calling that | |
381 | hook should clear this. Code assumes that if this is set, it can | |
382 | call mouse_position_hook to get the promised position, so don't set | |
383 | it unless you're prepared to substantiate the claim! */ | |
384 | int mouse_moved; | |
385 | ||
386 | /* True iff there is an event in kbd_buffer, or if mouse tracking is | |
387 | enabled and there is a new mouse position in the mouse movement | |
388 | buffer. Note that if this is false, that doesn't mean that there | |
389 | is readable input; all the events in the queue might be button-up | |
390 | events, and do_mouse_tracking might be off. */ | |
391 | #define EVENT_QUEUES_EMPTY \ | |
392 | ((kbd_fetch_ptr == kbd_store_ptr) && (!do_mouse_tracking || !mouse_moved)) | |
393 | ||
394 | ||
395 | /* Symbols to head events. */ | |
396 | Lisp_Object Qmouse_movement; | |
3c370943 | 397 | Lisp_Object Qscroll_bar_movement; |
cd21b839 JB |
398 | Lisp_Object Qswitch_frame; |
399 | ||
284f4730 JB |
400 | /* Symbols to denote kinds of events. */ |
401 | Lisp_Object Qfunction_key; | |
402 | Lisp_Object Qmouse_click; | |
403 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
404 | |
405 | /* Properties of event headers. */ | |
406 | Lisp_Object Qevent_kind; | |
88cb0656 | 407 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 408 | |
598a9fa7 JB |
409 | Lisp_Object Qmenu_enable; |
410 | ||
0a7f1fc0 JB |
411 | /* An event header symbol HEAD may have a property named |
412 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
413 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
414 | mask of modifiers applied to it. If present, this is used to help | |
415 | speed up parse_modifiers. */ | |
416 | Lisp_Object Qevent_symbol_element_mask; | |
417 | ||
418 | /* An unmodified event header BASE may have a property named | |
419 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
420 | modified versions of BASE. If present, this helps speed up | |
421 | apply_modifiers. */ | |
422 | Lisp_Object Qmodifier_cache; | |
423 | ||
5ec75a55 | 424 | /* Symbols to use for parts of windows. */ |
284f4730 | 425 | Lisp_Object Qmode_line; |
e5d77022 | 426 | Lisp_Object Qvertical_line; |
3c370943 | 427 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
428 | Lisp_Object Qmenu_bar; |
429 | ||
430 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 431 | |
f4255cd1 JB |
432 | Lisp_Object recursive_edit_unwind (), command_loop (); |
433 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 434 | Lisp_Object Qextended_command_history; |
284f4730 | 435 | |
f4eef8b4 RS |
436 | Lisp_Object Qpolling_period; |
437 | ||
ffd56f97 JB |
438 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
439 | happens. */ | |
440 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
441 | |
442 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
443 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
444 | int interrupt_input; | |
445 | ||
446 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
447 | int interrupts_deferred; | |
448 | ||
449 | /* nonzero means use ^S/^Q for flow control. */ | |
450 | int flow_control; | |
451 | ||
284f4730 JB |
452 | /* Allow m- file to inhibit use of FIONREAD. */ |
453 | #ifdef BROKEN_FIONREAD | |
454 | #undef FIONREAD | |
455 | #endif | |
456 | ||
457 | /* We are unable to use interrupts if FIONREAD is not available, | |
458 | so flush SIGIO so we won't try. */ | |
459 | #ifndef FIONREAD | |
460 | #ifdef SIGIO | |
461 | #undef SIGIO | |
462 | #endif | |
463 | #endif | |
464 | ||
34f04431 RS |
465 | /* If we support X Windows, turn on the code to poll periodically |
466 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 467 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
468 | #define POLL_FOR_INPUT |
469 | #endif | |
284f4730 JB |
470 | \f |
471 | /* Global variable declarations. */ | |
472 | ||
473 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
474 | void (*keyboard_init_hook) (); | |
475 | ||
476 | static int read_avail_input (); | |
477 | static void get_input_pending (); | |
9fd7d808 | 478 | static int readable_events (); |
8150596a RS |
479 | static Lisp_Object read_char_x_menu_prompt (); |
480 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
481 | static Lisp_Object make_lispy_event (); |
482 | static Lisp_Object make_lispy_movement (); | |
483 | static Lisp_Object modify_event_symbol (); | |
484 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
485 | |
486 | /* > 0 if we are to echo keystrokes. */ | |
487 | static int echo_keystrokes; | |
488 | ||
489 | /* Nonzero means echo each character as typed. */ | |
490 | static int immediate_echo; | |
491 | ||
492 | /* The text we're echoing in the modeline - partial key sequences, | |
f4255cd1 JB |
493 | usually. '\0'-terminated. This really shouldn't have a fixed size. */ |
494 | static char echobuf[300]; | |
284f4730 JB |
495 | |
496 | /* Where to append more text to echobuf if we want to. */ | |
497 | static char *echoptr; | |
498 | ||
7a80a6f6 RS |
499 | /* If we have echoed a prompt string specified by the user, |
500 | this is its length. Otherwise this is -1. */ | |
501 | static int echo_after_prompt; | |
502 | ||
8026024c KH |
503 | /* Nonzero means don't try to suspend even if the operating system seems |
504 | to support it. */ | |
505 | static int cannot_suspend; | |
506 | ||
284f4730 JB |
507 | #define min(a,b) ((a)<(b)?(a):(b)) |
508 | #define max(a,b) ((a)>(b)?(a):(b)) | |
509 | ||
510 | /* Install the string STR as the beginning of the string of echoing, | |
511 | so that it serves as a prompt for the next character. | |
512 | Also start echoing. */ | |
513 | ||
514 | echo_prompt (str) | |
515 | char *str; | |
516 | { | |
517 | int len = strlen (str); | |
7a80a6f6 | 518 | |
284f4730 JB |
519 | if (len > sizeof echobuf - 4) |
520 | len = sizeof echobuf - 4; | |
0a7f1fc0 | 521 | bcopy (str, echobuf, len); |
284f4730 | 522 | echoptr = echobuf + len; |
0a7f1fc0 | 523 | *echoptr = '\0'; |
284f4730 | 524 | |
7a80a6f6 RS |
525 | echo_after_prompt = len; |
526 | ||
284f4730 JB |
527 | echo (); |
528 | } | |
529 | ||
530 | /* Add C to the echo string, if echoing is going on. | |
531 | C can be a character, which is printed prettily ("M-C-x" and all that | |
532 | jazz), or a symbol, whose name is printed. */ | |
533 | ||
534 | echo_char (c) | |
535 | Lisp_Object c; | |
536 | { | |
537 | extern char *push_key_description (); | |
538 | ||
539 | if (immediate_echo) | |
540 | { | |
541 | char *ptr = echoptr; | |
542 | ||
543 | if (ptr != echobuf) | |
544 | *ptr++ = ' '; | |
545 | ||
546 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 547 | c = EVENT_HEAD (c); |
284f4730 JB |
548 | |
549 | if (XTYPE (c) == Lisp_Int) | |
550 | { | |
551 | if (ptr - echobuf > sizeof echobuf - 6) | |
552 | return; | |
553 | ||
cb5df6ae | 554 | ptr = push_key_description (XINT (c), ptr); |
284f4730 JB |
555 | } |
556 | else if (XTYPE (c) == Lisp_Symbol) | |
557 | { | |
558 | struct Lisp_String *name = XSYMBOL (c)->name; | |
559 | if (((ptr - echobuf) + name->size + 4) > sizeof echobuf) | |
560 | return; | |
561 | bcopy (name->data, ptr, name->size); | |
562 | ptr += name->size; | |
563 | } | |
564 | ||
7e85b935 | 565 | if (echoptr == echobuf && EQ (c, Vhelp_char)) |
284f4730 JB |
566 | { |
567 | strcpy (ptr, " (Type ? for further options)"); | |
568 | ptr += strlen (ptr); | |
569 | } | |
570 | ||
571 | *ptr = 0; | |
572 | echoptr = ptr; | |
573 | ||
574 | echo (); | |
575 | } | |
576 | } | |
577 | ||
578 | /* Temporarily add a dash to the end of the echo string if it's not | |
579 | empty, so that it serves as a mini-prompt for the very next character. */ | |
580 | ||
581 | echo_dash () | |
582 | { | |
583 | if (!immediate_echo && echoptr == echobuf) | |
584 | return; | |
7a80a6f6 | 585 | /* Do nothing if we just printed a prompt. */ |
7d637a0d | 586 | if (echo_after_prompt == echoptr - echobuf) |
7a80a6f6 | 587 | return; |
4bafa972 JB |
588 | /* Do nothing if not echoing at all. */ |
589 | if (echoptr == 0) | |
590 | return; | |
284f4730 JB |
591 | |
592 | /* Put a dash at the end of the buffer temporarily, | |
593 | but make it go away when the next character is added. */ | |
594 | echoptr[0] = '-'; | |
595 | echoptr[1] = 0; | |
596 | ||
597 | echo (); | |
598 | } | |
599 | ||
600 | /* Display the current echo string, and begin echoing if not already | |
601 | doing so. */ | |
602 | ||
603 | echo () | |
604 | { | |
605 | if (!immediate_echo) | |
606 | { | |
607 | int i; | |
608 | immediate_echo = 1; | |
609 | ||
610 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
611 | { |
612 | Lisp_Object c; | |
613 | c = XVECTOR (this_command_keys)->contents[i]; | |
614 | if (! (EVENT_HAS_PARAMETERS (c) | |
615 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
616 | echo_char (c); | |
617 | } | |
284f4730 JB |
618 | echo_dash (); |
619 | } | |
620 | ||
621 | echoing = 1; | |
622 | message1 (echobuf); | |
623 | echoing = 0; | |
624 | ||
625 | if (waiting_for_input && !NILP (Vquit_flag)) | |
626 | quit_throw_to_read_char (); | |
627 | } | |
628 | ||
629 | /* Turn off echoing, for the start of a new command. */ | |
630 | ||
631 | cancel_echoing () | |
632 | { | |
633 | immediate_echo = 0; | |
634 | echoptr = echobuf; | |
7a80a6f6 | 635 | echo_after_prompt = -1; |
284f4730 JB |
636 | } |
637 | ||
638 | /* Return the length of the current echo string. */ | |
639 | ||
640 | static int | |
641 | echo_length () | |
642 | { | |
643 | return echoptr - echobuf; | |
644 | } | |
645 | ||
646 | /* Truncate the current echo message to its first LEN chars. | |
647 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 648 | switches frames while entering a key sequence. */ |
284f4730 JB |
649 | |
650 | static void | |
651 | echo_truncate (len) | |
652 | int len; | |
653 | { | |
654 | echobuf[len] = '\0'; | |
0a7f1fc0 | 655 | echoptr = echobuf + len; |
40932d1a | 656 | truncate_echo_area (len); |
284f4730 JB |
657 | } |
658 | ||
659 | \f | |
660 | /* Functions for manipulating this_command_keys. */ | |
661 | static void | |
662 | add_command_key (key) | |
663 | Lisp_Object key; | |
664 | { | |
6569cc8d JB |
665 | int size = XVECTOR (this_command_keys)->size; |
666 | ||
667 | if (this_command_key_count >= size) | |
284f4730 | 668 | { |
9b8eb840 | 669 | Lisp_Object new_keys; |
6569cc8d | 670 | |
9b8eb840 | 671 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
672 | bcopy (XVECTOR (this_command_keys)->contents, |
673 | XVECTOR (new_keys)->contents, | |
8f805655 | 674 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
675 | |
676 | this_command_keys = new_keys; | |
284f4730 | 677 | } |
6569cc8d JB |
678 | |
679 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
680 | } |
681 | \f | |
682 | Lisp_Object | |
683 | recursive_edit_1 () | |
684 | { | |
685 | int count = specpdl_ptr - specpdl; | |
686 | Lisp_Object val; | |
687 | ||
688 | if (command_loop_level > 0) | |
689 | { | |
690 | specbind (Qstandard_output, Qt); | |
691 | specbind (Qstandard_input, Qt); | |
692 | } | |
693 | ||
694 | val = command_loop (); | |
695 | if (EQ (val, Qt)) | |
696 | Fsignal (Qquit, Qnil); | |
697 | ||
cb5df6ae | 698 | return unbind_to (count, Qnil); |
284f4730 JB |
699 | } |
700 | ||
701 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 702 | |
284f4730 JB |
703 | record_auto_save () |
704 | { | |
51172b6d | 705 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 706 | } |
5846638c RS |
707 | |
708 | /* Make an auto save happen as soon as possible at command level. */ | |
709 | ||
710 | force_auto_save_soon () | |
711 | { | |
712 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
713 | |
714 | record_asynch_buffer_change (); | |
5846638c | 715 | } |
284f4730 | 716 | \f |
284f4730 JB |
717 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
718 | "Invoke the editor command loop recursively.\n\ | |
719 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
720 | that tells this function to return.\n\ | |
721 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
722 | This function is called by the editor initialization to begin editing.") | |
723 | () | |
724 | { | |
725 | int count = specpdl_ptr - specpdl; | |
726 | Lisp_Object val; | |
727 | ||
728 | command_loop_level++; | |
729 | update_mode_lines = 1; | |
730 | ||
731 | record_unwind_protect (recursive_edit_unwind, | |
732 | (command_loop_level | |
733 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
734 | ? Fcurrent_buffer () | |
735 | : Qnil); | |
736 | recursive_edit_1 (); | |
737 | return unbind_to (count, Qnil); | |
738 | } | |
739 | ||
740 | Lisp_Object | |
741 | recursive_edit_unwind (buffer) | |
742 | Lisp_Object buffer; | |
743 | { | |
744 | if (!NILP (buffer)) | |
745 | Fset_buffer (buffer); | |
746 | ||
747 | command_loop_level--; | |
748 | update_mode_lines = 1; | |
749 | return Qnil; | |
750 | } | |
751 | \f | |
752 | Lisp_Object | |
753 | cmd_error (data) | |
754 | Lisp_Object data; | |
755 | { | |
756 | Lisp_Object errmsg, tail, errname, file_error; | |
757 | Lisp_Object stream; | |
758 | struct gcpro gcpro1; | |
759 | int i; | |
760 | ||
761 | Vquit_flag = Qnil; | |
762 | Vinhibit_quit = Qt; | |
763 | Vstandard_output = Qt; | |
764 | Vstandard_input = Qt; | |
765 | Vexecuting_macro = Qnil; | |
766 | echo_area_glyphs = 0; | |
767 | ||
ff11dfa1 | 768 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
769 | yet, or we're not interactive, it's best to dump this message out |
770 | to stderr and exit. */ | |
ff11dfa1 | 771 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
772 | || noninteractive) |
773 | stream = Qexternal_debugging_output; | |
774 | else | |
775 | { | |
776 | Fdiscard_input (); | |
777 | bitch_at_user (); | |
778 | stream = Qt; | |
779 | } | |
780 | ||
781 | errname = Fcar (data); | |
782 | ||
783 | if (EQ (errname, Qerror)) | |
784 | { | |
785 | data = Fcdr (data); | |
786 | if (!CONSP (data)) data = Qnil; | |
787 | errmsg = Fcar (data); | |
788 | file_error = Qnil; | |
789 | } | |
790 | else | |
791 | { | |
792 | errmsg = Fget (errname, Qerror_message); | |
793 | file_error = Fmemq (Qfile_error, | |
794 | Fget (errname, Qerror_conditions)); | |
795 | } | |
796 | ||
797 | /* Print an error message including the data items. | |
798 | This is done by printing it into a scratch buffer | |
799 | and then making a copy of the text in the buffer. */ | |
800 | ||
801 | if (!CONSP (data)) data = Qnil; | |
802 | tail = Fcdr (data); | |
803 | GCPRO1 (tail); | |
804 | ||
805 | /* For file-error, make error message by concatenating | |
806 | all the data items. They are all strings. */ | |
807 | if (!NILP (file_error) && !NILP (tail)) | |
808 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
809 | ||
810 | if (XTYPE (errmsg) == Lisp_String) | |
811 | Fprinc (errmsg, stream); | |
812 | else | |
813 | write_string_1 ("peculiar error", -1, stream); | |
814 | ||
815 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
816 | { | |
817 | write_string_1 (i ? ", " : ": ", 2, stream); | |
818 | if (!NILP (file_error)) | |
819 | Fprinc (Fcar (tail), stream); | |
820 | else | |
821 | Fprin1 (Fcar (tail), stream); | |
822 | } | |
823 | UNGCPRO; | |
824 | ||
ff11dfa1 | 825 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 826 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 827 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
828 | || noninteractive) |
829 | { | |
830 | Fterpri (stream); | |
831 | Fkill_emacs (make_number (-1)); | |
832 | } | |
833 | ||
834 | Vquit_flag = Qnil; | |
835 | ||
836 | Vinhibit_quit = Qnil; | |
837 | return make_number (0); | |
838 | } | |
839 | \f | |
840 | Lisp_Object command_loop_1 (); | |
841 | Lisp_Object command_loop_2 (); | |
842 | Lisp_Object top_level_1 (); | |
843 | ||
844 | /* Entry to editor-command-loop. | |
845 | This level has the catches for exiting/returning to editor command loop. | |
846 | It returns nil to exit recursive edit, t to abort it. */ | |
847 | ||
848 | Lisp_Object | |
849 | command_loop () | |
850 | { | |
851 | if (command_loop_level > 0 || minibuf_level > 0) | |
852 | { | |
853 | return internal_catch (Qexit, command_loop_2, Qnil); | |
854 | } | |
855 | else | |
856 | while (1) | |
857 | { | |
858 | internal_catch (Qtop_level, top_level_1, Qnil); | |
859 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
860 | ||
861 | /* End of file in -batch run causes exit here. */ | |
862 | if (noninteractive) | |
863 | Fkill_emacs (Qt); | |
864 | } | |
865 | } | |
866 | ||
867 | /* Here we catch errors in execution of commands within the | |
868 | editing loop, and reenter the editing loop. | |
869 | When there is an error, cmd_error runs and returns a non-nil | |
870 | value to us. A value of nil means that cmd_loop_1 itself | |
871 | returned due to end of file (or end of kbd macro). */ | |
872 | ||
873 | Lisp_Object | |
874 | command_loop_2 () | |
875 | { | |
876 | register Lisp_Object val; | |
877 | ||
878 | do | |
879 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
880 | while (!NILP (val)); | |
881 | ||
882 | return Qnil; | |
883 | } | |
884 | ||
885 | Lisp_Object | |
886 | top_level_2 () | |
887 | { | |
888 | return Feval (Vtop_level); | |
889 | } | |
890 | ||
891 | Lisp_Object | |
892 | top_level_1 () | |
893 | { | |
894 | /* On entry to the outer level, run the startup file */ | |
895 | if (!NILP (Vtop_level)) | |
896 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
897 | else if (!NILP (Vpurify_flag)) | |
898 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
899 | else | |
900 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
901 | return Qnil; | |
902 | } | |
903 | ||
904 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
905 | "Exit all recursive editing levels.") | |
906 | () | |
907 | { | |
908 | Fthrow (Qtop_level, Qnil); | |
909 | } | |
910 | ||
911 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
912 | "Exit from the innermost recursive edit or minibuffer.") | |
913 | () | |
914 | { | |
915 | if (command_loop_level > 0 || minibuf_level > 0) | |
916 | Fthrow (Qexit, Qnil); | |
917 | ||
918 | error ("No recursive edit is in progress"); | |
919 | } | |
920 | ||
921 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
922 | "Abort the command that requested this recursive edit or minibuffer input.") | |
923 | () | |
924 | { | |
925 | if (command_loop_level > 0 || minibuf_level > 0) | |
926 | Fthrow (Qexit, Qt); | |
927 | ||
928 | error ("No recursive edit is in progress"); | |
929 | } | |
930 | \f | |
931 | /* This is the actual command reading loop, | |
932 | sans error-handling encapsulation. */ | |
933 | ||
934 | Lisp_Object Fcommand_execute (); | |
935 | static int read_key_sequence (); | |
1c9784c9 | 936 | static void safe_run_hooks (); |
284f4730 JB |
937 | |
938 | Lisp_Object | |
939 | command_loop_1 () | |
940 | { | |
48e416d4 | 941 | Lisp_Object cmd, tem; |
284f4730 JB |
942 | int lose; |
943 | int nonundocount; | |
944 | Lisp_Object keybuf[30]; | |
945 | int i; | |
946 | int no_redisplay; | |
947 | int no_direct; | |
86e5706b RS |
948 | int prev_modiff; |
949 | struct buffer *prev_buffer; | |
284f4730 JB |
950 | |
951 | Vprefix_arg = Qnil; | |
86e5706b | 952 | Vdeactivate_mark = Qnil; |
284f4730 JB |
953 | waiting_for_input = 0; |
954 | cancel_echoing (); | |
955 | ||
284f4730 JB |
956 | nonundocount = 0; |
957 | no_redisplay = 0; | |
958 | this_command_key_count = 0; | |
959 | ||
a612e298 RS |
960 | /* Make sure this hook runs after commands that get errors and |
961 | throw to top level. */ | |
a98ea3f9 RS |
962 | /* Note that the value cell will never directly contain nil |
963 | if the symbol is a local variable. */ | |
964 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
965 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 966 | |
8a792f3a RS |
967 | if (!NILP (Vdeferred_action_list)) |
968 | call0 (Vdeferred_action_function); | |
969 | ||
51d5a2c9 RS |
970 | /* Do this after running Vpost_command_hook, for consistency. */ |
971 | last_command = this_command; | |
972 | ||
284f4730 JB |
973 | while (1) |
974 | { | |
975 | /* Install chars successfully executed in kbd macro. */ | |
976 | ||
977 | if (defining_kbd_macro && NILP (Vprefix_arg)) | |
978 | finalize_kbd_macro_chars (); | |
979 | ||
980 | /* Make sure the current window's buffer is selected. */ | |
981 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
982 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
983 | ||
984 | /* Display any malloc warning that just came out. Use while because | |
985 | displaying one warning can cause another. */ | |
986 | ||
987 | while (pending_malloc_warning) | |
988 | display_malloc_warning (); | |
989 | ||
990 | no_direct = 0; | |
991 | ||
86e5706b RS |
992 | Vdeactivate_mark = Qnil; |
993 | ||
284f4730 | 994 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 995 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
996 | |
997 | if (minibuf_level && echo_area_glyphs) | |
998 | { | |
f1bed6d8 RS |
999 | /* Bind inhibit-quit to t so that C-g gets read in |
1000 | rather than quitting back to the minibuffer. */ | |
1001 | int count = specpdl_ptr - specpdl; | |
1002 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1003 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1004 | unbind_to (count, Qnil); |
f1bed6d8 | 1005 | |
284f4730 JB |
1006 | echo_area_glyphs = 0; |
1007 | no_direct = 1; | |
1008 | if (!NILP (Vquit_flag)) | |
1009 | { | |
1010 | Vquit_flag = Qnil; | |
24597608 | 1011 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1012 | } |
1013 | } | |
1014 | ||
1015 | #ifdef C_ALLOCA | |
1016 | alloca (0); /* Cause a garbage collection now */ | |
1017 | /* Since we can free the most stuff here. */ | |
1018 | #endif /* C_ALLOCA */ | |
1019 | ||
8f805655 | 1020 | #if 0 |
ff11dfa1 | 1021 | #ifdef MULTI_FRAME |
8f805655 JB |
1022 | /* Select the frame that the last event came from. Usually, |
1023 | switch-frame events will take care of this, but if some lisp | |
1024 | code swallows a switch-frame event, we'll fix things up here. | |
1025 | Is this a good idea? */ | |
3c370943 JB |
1026 | if (XTYPE (internal_last_event_frame) == Lisp_Frame |
1027 | && XFRAME (internal_last_event_frame) != selected_frame) | |
1028 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1029 | #endif |
284f4730 | 1030 | #endif |
48e416d4 RS |
1031 | /* If it has changed current-menubar from previous value, |
1032 | really recompute the menubar from the value. */ | |
a646e520 RS |
1033 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1034 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1035 | call0 (Qrecompute_lucid_menubar); |
1036 | ||
8f805655 | 1037 | /* Read next key sequence; i gets its length. */ |
84d91fda | 1038 | i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), Qnil); |
8f805655 JB |
1039 | |
1040 | ++num_input_keys; | |
1041 | ||
284f4730 JB |
1042 | /* Now we have read a key sequence of length I, |
1043 | or else I is 0 and we found end of file. */ | |
1044 | ||
1045 | if (i == 0) /* End of file -- happens only in */ | |
1046 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1047 | /* -1 means read_key_sequence got a menu that was rejected. |
1048 | Just loop around and read another command. */ | |
1049 | if (i == -1) | |
1050 | { | |
1051 | cancel_echoing (); | |
1052 | this_command_key_count = 0; | |
1053 | continue; | |
1054 | } | |
284f4730 | 1055 | |
284f4730 JB |
1056 | last_command_char = keybuf[i - 1]; |
1057 | ||
75c0b143 RS |
1058 | /* If the previous command tried to force a specific window-start, |
1059 | forget about that, in case this command moves point far away | |
1060 | from that position. */ | |
1061 | XWINDOW (selected_window)->force_start = Qnil; | |
1062 | ||
284f4730 JB |
1063 | cmd = read_key_sequence_cmd; |
1064 | if (!NILP (Vexecuting_macro)) | |
1065 | { | |
1066 | if (!NILP (Vquit_flag)) | |
1067 | { | |
1068 | Vexecuting_macro = Qt; | |
1069 | QUIT; /* Make some noise. */ | |
1070 | /* Will return since macro now empty. */ | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1075 | cases identified below that set no_redisplay to 1. |
1076 | (actually, there's currently no way to prevent the redisplay, | |
1077 | and no_redisplay is ignored. | |
1078 | Perhaps someday we will really implement it. */ | |
284f4730 JB |
1079 | no_redisplay = 0; |
1080 | ||
86e5706b RS |
1081 | prev_buffer = current_buffer; |
1082 | prev_modiff = MODIFF; | |
8746da95 | 1083 | last_point_position = PT; |
047688cb | 1084 | XSET (last_point_position_buffer, Lisp_Buffer, prev_buffer); |
86e5706b | 1085 | |
284f4730 JB |
1086 | /* Execute the command. */ |
1087 | ||
86e5706b | 1088 | this_command = cmd; |
a98ea3f9 RS |
1089 | /* Note that the value cell will never directly contain nil |
1090 | if the symbol is a local variable. */ | |
1091 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1092 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1093 | |
258bf746 | 1094 | if (NILP (this_command)) |
284f4730 JB |
1095 | { |
1096 | /* nil means key is undefined. */ | |
1097 | bitch_at_user (); | |
1098 | defining_kbd_macro = 0; | |
1099 | update_mode_lines = 1; | |
1100 | Vprefix_arg = Qnil; | |
86e5706b | 1101 | |
284f4730 JB |
1102 | } |
1103 | else | |
1104 | { | |
284f4730 JB |
1105 | if (NILP (Vprefix_arg) && ! no_direct) |
1106 | { | |
1107 | /* Recognize some common commands in common situations and | |
1108 | do them directly. */ | |
8001d352 | 1109 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1110 | { |
1111 | struct Lisp_Vector *dp | |
1112 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1113 | lose = FETCH_CHAR (PT); |
1114 | SET_PT (PT + 1); | |
0f7a8fee | 1115 | if ((dp |
82ba47d7 | 1116 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1117 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1118 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1119 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1120 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1121 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1122 | >= MODIFF) | |
1123 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1124 | == PT - 1) |
284f4730 JB |
1125 | && !windows_or_buffers_changed |
1126 | && EQ (current_buffer->selective_display, Qnil) | |
1127 | && !detect_input_pending () | |
1128 | && NILP (Vexecuting_macro)) | |
1129 | no_redisplay = direct_output_forward_char (1); | |
1130 | goto directly_done; | |
1131 | } | |
8001d352 | 1132 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1133 | { |
1134 | struct Lisp_Vector *dp | |
1135 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1136 | SET_PT (PT - 1); |
1137 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1138 | if ((dp |
ca873d73 | 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 | } | |
258bf746 | 1155 | else if (EQ (this_command, Qself_insert_command) |
284f4730 JB |
1156 | /* Try this optimization only on ascii keystrokes. */ |
1157 | && XTYPE (last_command_char) == Lisp_Int) | |
1158 | { | |
1159 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1160 | int value; |
284f4730 | 1161 | |
fc9cce4e RS |
1162 | if (NILP (Vexecuting_macro) |
1163 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1164 | { |
1165 | if (!nonundocount || nonundocount >= 20) | |
1166 | { | |
1167 | Fundo_boundary (); | |
1168 | nonundocount = 0; | |
1169 | } | |
1170 | nonundocount++; | |
1171 | } | |
fc9cce4e RS |
1172 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1173 | < MODIFF) | |
1174 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1175 | != PT) | |
1176 | || MODIFF <= current_buffer->save_modified | |
1177 | || windows_or_buffers_changed | |
1178 | || !EQ (current_buffer->selective_display, Qnil) | |
1179 | || detect_input_pending () | |
1180 | || !NILP (Vexecuting_macro)); | |
1181 | value = internal_self_insert (c, 0); | |
1182 | if (value) | |
1183 | lose = 1; | |
1184 | if (value == 2) | |
1185 | nonundocount = 0; | |
1186 | ||
1187 | if (!lose | |
1188 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1189 | { |
1190 | struct Lisp_Vector *dp | |
1191 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1192 | int lose = c; |
284f4730 | 1193 | |
0f7a8fee JB |
1194 | if (dp) |
1195 | { | |
9b8eb840 | 1196 | Lisp_Object obj; |
0f7a8fee | 1197 | |
9b8eb840 | 1198 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1199 | if (NILP (obj)) |
8e91f441 RS |
1200 | { |
1201 | /* Do it only for char codes | |
1202 | that by default display as themselves. */ | |
1203 | if (lose >= 0x20 && lose <= 0x7e) | |
1204 | no_redisplay = direct_output_for_insert (lose); | |
1205 | } | |
054c8675 RS |
1206 | else if (XTYPE (obj) == Lisp_Vector |
1207 | && XVECTOR (obj)->size == 1 | |
1208 | && (XTYPE (obj = XVECTOR (obj)->contents[0]) | |
1209 | == Lisp_Int) | |
1210 | /* Insist face not specified in glyph. */ | |
1211 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1212 | no_redisplay |
1213 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1214 | } |
1215 | else | |
1216 | { | |
1217 | if (lose >= 0x20 && lose <= 0x7e) | |
1218 | no_redisplay = direct_output_for_insert (lose); | |
1219 | } | |
284f4730 JB |
1220 | } |
1221 | goto directly_done; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | /* Here for a command that isn't executed directly */ | |
1226 | ||
1227 | nonundocount = 0; | |
1228 | if (NILP (Vprefix_arg)) | |
1229 | Fundo_boundary (); | |
258bf746 | 1230 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1231 | |
284f4730 | 1232 | } |
a764a753 | 1233 | directly_done: ; |
284f4730 | 1234 | |
a98ea3f9 RS |
1235 | /* Note that the value cell will never directly contain nil |
1236 | if the symbol is a local variable. */ | |
1237 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1238 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1239 | |
8a792f3a RS |
1240 | if (!NILP (Vdeferred_action_list)) |
1241 | call0 (Vdeferred_action_function); | |
1242 | ||
284f4730 JB |
1243 | /* If there is a prefix argument, |
1244 | 1) We don't want last_command to be ``universal-argument'' | |
1245 | (that would be dumb), so don't set last_command, | |
1246 | 2) we want to leave echoing on so that the prefix will be | |
1247 | echoed as part of this key sequence, so don't call | |
1248 | cancel_echoing, and | |
1249 | 3) we want to leave this_command_key_count non-zero, so that | |
1250 | read_char will realize that it is re-reading a character, and | |
1251 | not echo it a second time. */ | |
1252 | if (NILP (Vprefix_arg)) | |
1253 | { | |
1254 | last_command = this_command; | |
1255 | cancel_echoing (); | |
1256 | this_command_key_count = 0; | |
1257 | } | |
86e5706b | 1258 | |
88ce066e | 1259 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1260 | { |
1261 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1262 | { | |
1263 | current_buffer->mark_active = Qnil; | |
1264 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1265 | } | |
1266 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1267 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1268 | } | |
284f4730 JB |
1269 | } |
1270 | } | |
1c9784c9 KH |
1271 | |
1272 | /* If we get an error while running the hook, cause the hook variable | |
1273 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1274 | to mysteriously evaporate. */ | |
1275 | static void | |
1276 | safe_run_hooks (hook) | |
a98ea3f9 | 1277 | Lisp_Object hook; |
1c9784c9 | 1278 | { |
68553292 | 1279 | Lisp_Object value; |
1c9784c9 KH |
1280 | int count = specpdl_ptr - specpdl; |
1281 | specbind (Qinhibit_quit, Qt); | |
1282 | ||
a98ea3f9 RS |
1283 | /* We read and set the variable with functions, |
1284 | in case it's buffer-local. */ | |
68553292 | 1285 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1286 | Fset (hook, Qnil); |
1c9784c9 | 1287 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1288 | Fset (hook, value); |
1c9784c9 KH |
1289 | |
1290 | unbind_to (count, Qnil); | |
1291 | } | |
284f4730 JB |
1292 | \f |
1293 | /* Number of seconds between polling for input. */ | |
1294 | int polling_period; | |
1295 | ||
eb8c3be9 | 1296 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1297 | int poll_suppress_count; |
1298 | ||
36922b18 | 1299 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1300 | int polling_for_input; |
1301 | ||
36922b18 RS |
1302 | #ifdef POLL_FOR_INPUT |
1303 | ||
284f4730 JB |
1304 | /* Handle an alarm once each second and read pending input |
1305 | so as to handle a C-g if it comces in. */ | |
1306 | ||
1307 | SIGTYPE | |
1308 | input_poll_signal () | |
1309 | { | |
9ac0d9e0 JB |
1310 | if (interrupt_input_blocked == 0 |
1311 | && !waiting_for_input) | |
1312 | read_avail_input (0); | |
284f4730 JB |
1313 | signal (SIGALRM, input_poll_signal); |
1314 | alarm (polling_period); | |
1315 | } | |
1316 | ||
1317 | #endif | |
1318 | ||
1319 | /* Begin signals to poll for input, if they are appropriate. | |
1320 | This function is called unconditionally from various places. */ | |
1321 | ||
1322 | start_polling () | |
1323 | { | |
1324 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1325 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1326 | { |
1327 | poll_suppress_count--; | |
1328 | if (poll_suppress_count == 0) | |
1329 | { | |
1330 | signal (SIGALRM, input_poll_signal); | |
1331 | polling_for_input = 1; | |
1332 | alarm (polling_period); | |
1333 | } | |
1334 | } | |
1335 | #endif | |
1336 | } | |
1337 | ||
1d3195db RS |
1338 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1339 | ||
1340 | int | |
1341 | input_polling_used () | |
1342 | { | |
1343 | #ifdef POLL_FOR_INPUT | |
1344 | return read_socket_hook && !interrupt_input; | |
1345 | #else | |
1346 | return 0; | |
1347 | #endif | |
1348 | } | |
1349 | ||
284f4730 JB |
1350 | /* Turn off polling. */ |
1351 | ||
1352 | stop_polling () | |
1353 | { | |
1354 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1355 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1356 | { |
1357 | if (poll_suppress_count == 0) | |
1358 | { | |
1359 | polling_for_input = 0; | |
1360 | alarm (0); | |
1361 | } | |
1362 | poll_suppress_count++; | |
1363 | } | |
1364 | #endif | |
1365 | } | |
fe8aeef3 RS |
1366 | |
1367 | /* Set the value of poll_suppress_count to COUNT | |
1368 | and start or stop polling accordingly. */ | |
1369 | ||
1370 | void | |
1371 | set_poll_suppress_count (count) | |
1372 | int count; | |
1373 | { | |
1374 | #ifdef POLL_FOR_INPUT | |
1375 | if (count == 0 && poll_suppress_count != 0) | |
1376 | { | |
1377 | poll_suppress_count = 1; | |
1378 | start_polling (); | |
1379 | } | |
1380 | else if (count != 0 && poll_suppress_count == 0) | |
1381 | { | |
1382 | stop_polling (); | |
1383 | } | |
1384 | poll_suppress_count = count; | |
1385 | #endif | |
1386 | } | |
f4eef8b4 | 1387 | |
d0a57728 RS |
1388 | /* Bind polling_period to a value at least N. |
1389 | But don't decrease it. */ | |
1390 | ||
f4eef8b4 RS |
1391 | bind_polling_period (n) |
1392 | int n; | |
1393 | { | |
1394 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1395 | int new = polling_period; |
1396 | ||
1397 | if (n > new) | |
1398 | new = n; | |
1399 | ||
f4eef8b4 | 1400 | stop_polling (); |
d0a57728 RS |
1401 | specbind (Qpolling_period, make_number (new)); |
1402 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1403 | start_polling (); |
1404 | #endif | |
1405 | } | |
284f4730 | 1406 | \f |
faf5e407 JB |
1407 | /* Applying the control modifier to CHARACTER. */ |
1408 | int | |
1409 | make_ctrl_char (c) | |
1410 | int c; | |
1411 | { | |
d205953b JB |
1412 | /* Save the upper bits here. */ |
1413 | int upper = c & ~0177; | |
1414 | ||
1415 | c &= 0177; | |
1416 | ||
1417 | /* Everything in the columns containing the upper-case letters | |
1418 | denotes a control character. */ | |
1419 | if (c >= 0100 && c < 0140) | |
1420 | { | |
1421 | int oc = c; | |
1422 | c &= ~0140; | |
1423 | /* Set the shift modifier for a control char | |
1424 | made from a shifted letter. But only for letters! */ | |
1425 | if (oc >= 'A' && oc <= 'Z') | |
1426 | c |= shift_modifier; | |
1427 | } | |
1428 | ||
1429 | /* The lower-case letters denote control characters too. */ | |
1430 | else if (c >= 'a' && c <= 'z') | |
1431 | c &= ~0140; | |
1432 | ||
1433 | /* Include the bits for control and shift | |
1434 | only if the basic ASCII code can't indicate them. */ | |
1435 | else if (c >= ' ') | |
1436 | c |= ctrl_modifier; | |
1437 | ||
1438 | /* Replace the high bits. */ | |
1439 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1440 | |
1441 | return c; | |
1442 | } | |
1443 | ||
1444 | ||
1445 | \f | |
284f4730 JB |
1446 | /* Input of single characters from keyboard */ |
1447 | ||
1448 | Lisp_Object print_help (); | |
1449 | static Lisp_Object kbd_buffer_get_event (); | |
1450 | ||
1451 | /* read a character from the keyboard; call the redisplay if needed */ | |
1452 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1453 | -1 means do not do redisplay, but do do autosaving. | |
1454 | 1 means do both. */ | |
1455 | ||
7d6de002 RS |
1456 | /* The arguments MAPS and NMAPS are for menu prompting. |
1457 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1458 | ||
1459 | PREV_EVENT is the previous input event, or nil if we are reading | |
1460 | the first event of a key sequence. | |
1461 | ||
6569cc8d JB |
1462 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1463 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1464 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1465 | ||
1466 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1467 | |
284f4730 | 1468 | Lisp_Object |
7d6de002 | 1469 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1470 | int commandflag; |
7d6de002 RS |
1471 | int nmaps; |
1472 | Lisp_Object *maps; | |
1473 | Lisp_Object prev_event; | |
1474 | int *used_mouse_menu; | |
284f4730 JB |
1475 | { |
1476 | register Lisp_Object c; | |
1477 | int count; | |
1478 | jmp_buf save_jump; | |
1479 | ||
24597608 | 1480 | if (CONSP (Vunread_command_events)) |
284f4730 | 1481 | { |
24597608 RS |
1482 | c = XCONS (Vunread_command_events)->car; |
1483 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1484 | |
284f4730 JB |
1485 | if (this_command_key_count == 0) |
1486 | goto reread_first; | |
1487 | else | |
1488 | goto reread; | |
1489 | } | |
1490 | ||
86e5706b RS |
1491 | if (unread_command_char != -1) |
1492 | { | |
1493 | XSET (c, Lisp_Int, unread_command_char); | |
1494 | unread_command_char = -1; | |
1495 | ||
1496 | if (this_command_key_count == 0) | |
1497 | goto reread_first; | |
1498 | else | |
1499 | goto reread; | |
1500 | } | |
1501 | ||
284f4730 JB |
1502 | if (!NILP (Vexecuting_macro)) |
1503 | { | |
07d2b8de | 1504 | #ifdef MULTI_FRAME |
fce33686 JB |
1505 | /* We set this to Qmacro; since that's not a frame, nobody will |
1506 | try to switch frames on us, and the selected window will | |
1507 | remain unchanged. | |
1508 | ||
1509 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1510 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1511 | real event came from. Normally, a switch-frame event selects |
1512 | internal_last_event_frame after each command is read, but | |
1513 | events read from a macro should never cause a new frame to be | |
1514 | selected. */ | |
1515 | Vlast_event_frame = internal_last_event_frame = Qmacro; | |
07d2b8de | 1516 | #endif |
fce33686 | 1517 | |
663258f2 JB |
1518 | /* Exit the macro if we are at the end. |
1519 | Also, some things replace the macro with t | |
1520 | to force an early exit. */ | |
1521 | if (EQ (Vexecuting_macro, Qt) | |
1522 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 JB |
1523 | { |
1524 | XSET (c, Lisp_Int, -1); | |
1525 | return c; | |
1526 | } | |
1527 | ||
1528 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
86e5706b RS |
1529 | if (XTYPE (Vexecuting_macro) == Lisp_String |
1530 | && (XINT (c) & 0x80)) | |
1531 | XFASTINT (c) = CHAR_META | (XINT (c) & ~0x80); | |
1532 | ||
284f4730 JB |
1533 | executing_macro_index++; |
1534 | ||
1535 | goto from_macro; | |
1536 | } | |
1537 | ||
cd21b839 JB |
1538 | if (!NILP (unread_switch_frame)) |
1539 | { | |
1540 | c = unread_switch_frame; | |
1541 | unread_switch_frame = Qnil; | |
1542 | ||
1543 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1544 | again, so we go to reread_first, rather than reread. */ |
1545 | goto reread_first; | |
cd21b839 JB |
1546 | } |
1547 | ||
3f9929bf RS |
1548 | /* Don't bother updating menu bars while doing mouse tracking. |
1549 | We get events very rapidly then, and the menu bar won't be changing. | |
1550 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1551 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1552 | prepare_menu_bars (); |
1553 | ||
284f4730 | 1554 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1555 | save_getcjmp (save_jump); |
284f4730 JB |
1556 | |
1557 | stop_polling (); | |
1558 | ||
1559 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1560 | redisplay (); | |
1561 | ||
1562 | if (_setjmp (getcjmp)) | |
1563 | { | |
1564 | XSET (c, Lisp_Int, quit_char); | |
07d2b8de | 1565 | #ifdef MULTI_FRAME |
3c370943 JB |
1566 | XSET (internal_last_event_frame, Lisp_Frame, selected_frame); |
1567 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1568 | #endif |
04904c29 RS |
1569 | /* If we report the quit char as an event, |
1570 | don't do so more than once. */ | |
1571 | if (!NILP (Vinhibit_quit)) | |
1572 | Vquit_flag = Qnil; | |
284f4730 | 1573 | |
284f4730 JB |
1574 | goto non_reread; |
1575 | } | |
1576 | ||
1577 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1578 | if (echo_area_glyphs && *echo_area_glyphs && echo_area_glyphs != echobuf) | |
1579 | cancel_echoing (); | |
1580 | else | |
1581 | /* If already echoing, continue. */ | |
1582 | echo_dash (); | |
1583 | ||
8150596a RS |
1584 | /* Try reading a character via menu prompting in the minibuf. |
1585 | Try this before the sit-for, because the sit-for | |
1586 | would do the wrong thing if we are supposed to do | |
1587 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1588 | after a mouse event so don't try a minibuf menu. */ | |
1589 | c = Qnil; | |
24597608 RS |
1590 | if (nmaps > 0 && INTERACTIVE |
1591 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1592 | /* Don't bring up a menu if we already have another event. */ | |
1593 | && NILP (Vunread_command_events) | |
1594 | && unread_command_char < 0 | |
b8556aee | 1595 | && !detect_input_pending ()) |
8150596a RS |
1596 | { |
1597 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1598 | if (! NILP (c)) |
588a7c5d | 1599 | goto non_reread; |
8150596a RS |
1600 | } |
1601 | ||
284f4730 JB |
1602 | /* If in middle of key sequence and minibuffer not active, |
1603 | start echoing if enough time elapses. */ | |
1604 | if (minibuf_level == 0 && !immediate_echo && this_command_key_count > 0 | |
27203ead | 1605 | && ! noninteractive |
284f4730 JB |
1606 | && echo_keystrokes > 0 |
1607 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1608 | { | |
1609 | Lisp_Object tem0; | |
1610 | ||
7d6de002 RS |
1611 | /* After a mouse event, start echoing right away. |
1612 | This is because we are probably about to display a menu, | |
1613 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1614 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1615 | echo (); |
7d6de002 RS |
1616 | else |
1617 | { | |
1618 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1619 | if (EQ (tem0, Qt)) | |
1620 | echo (); | |
1621 | } | |
284f4730 JB |
1622 | } |
1623 | ||
1624 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1625 | ||
1626 | if (commandflag != 0 | |
1627 | && auto_save_interval > 0 | |
51172b6d | 1628 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1629 | && !detect_input_pending ()) |
1630 | { | |
1631 | jmp_buf temp; | |
1632 | save_getcjmp (temp); | |
1633 | Fdo_auto_save (Qnil, Qnil); | |
1634 | restore_getcjmp (temp); | |
1635 | } | |
1636 | ||
8150596a | 1637 | /* Try reading using an X menu. |
24597608 RS |
1638 | This is never confused with reading using the minibuf |
1639 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1640 | does not pass on any keymaps. */ | |
1641 | if (nmaps > 0 && INTERACTIVE | |
1642 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1643 | /* Don't bring up a menu if we already have another event. */ | |
1644 | && NILP (Vunread_command_events) | |
b8556aee | 1645 | && unread_command_char < 0) |
8150596a | 1646 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1647 | |
284f4730 JB |
1648 | /* Slow down auto saves logarithmically in size of current buffer, |
1649 | and garbage collect while we're at it. */ | |
26c1639e | 1650 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1651 | { |
1652 | int delay_level, buffer_size; | |
1653 | ||
1654 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1655 | last_non_minibuf_size = Z - BEG; | |
1656 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1657 | delay_level = 0; | |
1658 | while (buffer_size > 64) | |
1659 | delay_level++, buffer_size -= buffer_size >> 2; | |
1660 | if (delay_level < 4) delay_level = 4; | |
1661 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1662 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1663 | ||
1664 | /* Auto save if enough time goes by without input. */ | |
1665 | if (commandflag != 0 | |
51172b6d | 1666 | && num_nonmacro_input_chars > last_auto_save |
7d6de002 RS |
1667 | && XTYPE (Vauto_save_timeout) == Lisp_Int |
1668 | && XINT (Vauto_save_timeout) > 0) | |
1669 | { | |
1670 | Lisp_Object tem0; | |
1671 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1672 | tem0 = sit_for (delay, 0, 1, 1); | |
1673 | if (EQ (tem0, Qt)) | |
1674 | { | |
1675 | jmp_buf temp; | |
1676 | save_getcjmp (temp); | |
1677 | Fdo_auto_save (Qnil, Qnil); | |
1678 | restore_getcjmp (temp); | |
1679 | ||
1680 | /* If we have auto-saved and there is still no input | |
1681 | available, garbage collect if there has been enough | |
1682 | consing going on to make it worthwhile. */ | |
1683 | if (!detect_input_pending () | |
1684 | && consing_since_gc > gc_cons_threshold / 2) | |
7e85b935 RS |
1685 | { |
1686 | Fgarbage_collect (); | |
e9bf89a0 RS |
1687 | /* prepare_menu_bars isn't safe here, but it should |
1688 | also be unnecessary. */ | |
7e85b935 RS |
1689 | redisplay (); |
1690 | } | |
7d6de002 RS |
1691 | } |
1692 | } | |
1693 | } | |
284f4730 JB |
1694 | |
1695 | /* Actually read a character, waiting if necessary. */ | |
4eb4f926 | 1696 | while (NILP (c)) |
1e12dd87 RS |
1697 | { |
1698 | c = kbd_buffer_get_event (); | |
1699 | if (!NILP (c)) | |
1700 | break; | |
1701 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
cd72760c RS |
1702 | { |
1703 | prepare_menu_bars (); | |
1704 | redisplay (); | |
1705 | } | |
1e12dd87 | 1706 | } |
284f4730 | 1707 | |
284f4730 | 1708 | /* Terminate Emacs in batch mode if at eof. */ |
7d6de002 | 1709 | if (noninteractive && XTYPE (c) == Lisp_Int && XINT (c) < 0) |
284f4730 JB |
1710 | Fkill_emacs (make_number (1)); |
1711 | ||
80645119 JB |
1712 | if (XTYPE (c) == Lisp_Int) |
1713 | { | |
1714 | /* Add in any extra modifiers, where appropriate. */ | |
1715 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1716 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1717 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1718 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1719 | |
1720 | /* Transfer any other modifier bits directly from | |
1721 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1722 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1723 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1724 | } |
9fa4395d | 1725 | |
284f4730 JB |
1726 | non_reread: |
1727 | ||
f76475ad | 1728 | restore_getcjmp (save_jump); |
284f4730 JB |
1729 | |
1730 | start_polling (); | |
1731 | ||
dfd11da7 RS |
1732 | /* Buffer switch events are only for internal wakeups |
1733 | so don't show them to the user. */ | |
1734 | if (XTYPE (c) == Lisp_Buffer) | |
1735 | return c; | |
1736 | ||
1737 | /* Wipe the echo area. */ | |
1738 | echo_area_glyphs = 0; | |
284f4730 JB |
1739 | |
1740 | /* Handle things that only apply to characters. */ | |
1741 | if (XTYPE (c) == Lisp_Int) | |
1742 | { | |
1743 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1744 | if (XINT (c) == -1) |
284f4730 JB |
1745 | return c; |
1746 | ||
284f4730 | 1747 | if (XTYPE (Vkeyboard_translate_table) == Lisp_String |
f4255cd1 JB |
1748 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1749 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1750 | } |
1751 | ||
1752 | total_keys++; | |
5160df46 JB |
1753 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; |
1754 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
284f4730 JB |
1755 | recent_keys_index = 0; |
1756 | ||
1757 | /* Write c to the dribble file. If c is a lispy event, write | |
1758 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1759 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1760 | if (dribble) | |
1761 | { | |
1762 | if (XTYPE (c) == Lisp_Int) | |
dfd11da7 RS |
1763 | { |
1764 | if (XUINT (c) < 0x100) | |
1765 | putc (XINT (c), dribble); | |
1766 | else | |
1767 | fprintf (dribble, " 0x%x", XUINT (c)); | |
1768 | } | |
284f4730 JB |
1769 | else |
1770 | { | |
9b8eb840 | 1771 | Lisp_Object dribblee; |
284f4730 JB |
1772 | |
1773 | /* If it's a structured event, take the event header. */ | |
9b8eb840 | 1774 | dribblee = EVENT_HEAD (c); |
284f4730 | 1775 | |
8f805655 | 1776 | if (XTYPE (dribblee) == Lisp_Symbol) |
284f4730 JB |
1777 | { |
1778 | putc ('<', dribble); | |
8f805655 JB |
1779 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), |
1780 | XSYMBOL (dribblee)->name->size, | |
284f4730 JB |
1781 | dribble); |
1782 | putc ('>', dribble); | |
1783 | } | |
1784 | } | |
1785 | ||
1786 | fflush (dribble); | |
1787 | } | |
1788 | ||
1789 | store_kbd_macro_char (c); | |
1790 | ||
51172b6d RS |
1791 | num_nonmacro_input_chars++; |
1792 | ||
284f4730 JB |
1793 | from_macro: |
1794 | reread_first: | |
284f4730 | 1795 | |
b8556aee | 1796 | /* Don't echo mouse motion events. */ |
4bb994d1 JB |
1797 | if (! (EVENT_HAS_PARAMETERS (c) |
1798 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
b8556aee RS |
1799 | echo_char (c); |
1800 | ||
db8c1663 | 1801 | /* Record this character as part of the current key. */ |
b8556aee | 1802 | add_command_key (c); |
284f4730 JB |
1803 | |
1804 | /* Re-reading in the middle of a command */ | |
1805 | reread: | |
1806 | last_input_char = c; | |
1807 | num_input_chars++; | |
1808 | ||
1809 | /* Process the help character specially if enabled */ | |
7e85b935 | 1810 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1811 | { |
1812 | Lisp_Object tem0; | |
1813 | count = specpdl_ptr - specpdl; | |
1814 | ||
1815 | record_unwind_protect (Fset_window_configuration, | |
1816 | Fcurrent_window_configuration (Qnil)); | |
1817 | ||
1818 | tem0 = Feval (Vhelp_form); | |
1819 | if (XTYPE (tem0) == Lisp_String) | |
1820 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); | |
1821 | ||
1822 | cancel_echoing (); | |
3cb81011 KH |
1823 | do |
1824 | c = read_char (0, 0, 0, Qnil, 0); | |
1825 | while (XTYPE (c) == Lisp_Buffer); | |
ff11dfa1 | 1826 | /* Remove the help from the frame */ |
284f4730 | 1827 | unbind_to (count, Qnil); |
e9bf89a0 | 1828 | prepare_menu_bars (); |
284f4730 JB |
1829 | redisplay (); |
1830 | if (EQ (c, make_number (040))) | |
1831 | { | |
1832 | cancel_echoing (); | |
3cb81011 KH |
1833 | do |
1834 | c = read_char (0, 0, 0, Qnil, 0); | |
1835 | while (XTYPE (c) == Lisp_Buffer); | |
284f4730 JB |
1836 | } |
1837 | } | |
1838 | ||
1839 | return c; | |
1840 | } | |
1841 | ||
1842 | Lisp_Object | |
1843 | print_help (object) | |
1844 | Lisp_Object object; | |
1845 | { | |
1846 | Fprinc (object, Qnil); | |
1847 | return Qnil; | |
1848 | } | |
1849 | ||
1850 | /* Copy out or in the info on where C-g should throw to. | |
1851 | This is used when running Lisp code from within get_char, | |
1852 | in case get_char is called recursively. | |
1853 | See read_process_output. */ | |
1854 | ||
1855 | save_getcjmp (temp) | |
1856 | jmp_buf temp; | |
1857 | { | |
1858 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1859 | } | |
1860 | ||
1861 | restore_getcjmp (temp) | |
1862 | jmp_buf temp; | |
1863 | { | |
1864 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1865 | } | |
1866 | ||
1867 | \f | |
284f4730 JB |
1868 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
1869 | of this function. */ | |
1870 | static Lisp_Object | |
1871 | tracking_off (old_value) | |
1872 | Lisp_Object old_value; | |
1873 | { | |
1874 | if (! XFASTINT (old_value)) | |
1875 | { | |
1876 | do_mouse_tracking = 0; | |
1877 | ||
1878 | /* Redisplay may have been preempted because there was input | |
1879 | available, and it assumes it will be called again after the | |
1880 | input has been processed. If the only input available was | |
1881 | the sort that we have just disabled, then we need to call | |
1882 | redisplay. */ | |
1883 | if (!readable_events ()) | |
1884 | { | |
e9bf89a0 | 1885 | prepare_menu_bars (); |
284f4730 JB |
1886 | redisplay_preserve_echo_area (); |
1887 | get_input_pending (&input_pending); | |
1888 | } | |
1889 | } | |
1890 | } | |
1891 | ||
1892 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
1893 | "Evaluate BODY with mouse movement events enabled.\n\ |
1894 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
1895 | you can read with `read-event'.\n\ | |
1896 | Normally, mouse motion is ignored.") | |
284f4730 JB |
1897 | (args) |
1898 | Lisp_Object args; | |
1899 | { | |
1900 | int count = specpdl_ptr - specpdl; | |
1901 | Lisp_Object val; | |
1902 | ||
1903 | XSET (val, Lisp_Int, do_mouse_tracking); | |
1904 | record_unwind_protect (tracking_off, val); | |
1905 | ||
3f9929bf RS |
1906 | if (!input_pending && !detect_input_pending ()) |
1907 | prepare_menu_bars (); | |
1908 | ||
284f4730 JB |
1909 | do_mouse_tracking = 1; |
1910 | ||
1911 | val = Fprogn (args); | |
1912 | return unbind_to (count, val); | |
1913 | } | |
a612e298 RS |
1914 | \f |
1915 | /* Low level keyboard/mouse input. | |
1916 | kbd_buffer_store_event places events in kbd_buffer, and | |
1917 | kbd_buffer_get_event retrieves them. | |
1918 | mouse_moved indicates when the mouse has moved again, and | |
1919 | *mouse_position_hook provides the mouse position. */ | |
1920 | ||
1921 | /* Return true iff there are any events in the queue that read-char | |
1922 | would return. If this returns false, a read-char would block. */ | |
1923 | static int | |
1924 | readable_events () | |
1925 | { | |
1926 | return ! EVENT_QUEUES_EMPTY; | |
1927 | } | |
1928 | ||
1929 | /* Set this for debugging, to have a way to get out */ | |
1930 | int stop_character; | |
284f4730 JB |
1931 | |
1932 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
1933 | ||
1934 | void | |
1935 | kbd_buffer_store_event (event) | |
1936 | register struct input_event *event; | |
1937 | { | |
1938 | if (event->kind == no_event) | |
1939 | abort (); | |
1940 | ||
1941 | if (event->kind == ascii_keystroke) | |
1942 | { | |
e9bf89a0 | 1943 | register int c = event->code & 0377; |
284f4730 | 1944 | |
faf5e407 JB |
1945 | if (event->modifiers & ctrl_modifier) |
1946 | c = make_ctrl_char (c); | |
1947 | ||
9fd7d808 RS |
1948 | c |= (event->modifiers |
1949 | & (meta_modifier | alt_modifier | |
1950 | | hyper_modifier | super_modifier)); | |
1951 | ||
86e5706b | 1952 | if (c == quit_char) |
284f4730 | 1953 | { |
3e51c7b7 JB |
1954 | extern SIGTYPE interrupt_signal (); |
1955 | ||
07d2b8de | 1956 | #ifdef MULTI_FRAME |
284f4730 | 1957 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 1958 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 1959 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 1960 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 1961 | { |
9b8eb840 | 1962 | Lisp_Object focus; |
4bb994d1 | 1963 | |
9b8eb840 | 1964 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 1965 | if (NILP (focus)) |
3c370943 | 1966 | internal_last_event_frame = event->frame_or_window; |
4bb994d1 | 1967 | else |
3c370943 JB |
1968 | internal_last_event_frame = focus; |
1969 | Vlast_event_frame = internal_last_event_frame; | |
4bb994d1 | 1970 | } |
07d2b8de | 1971 | #endif |
3e51c7b7 | 1972 | |
ffd56f97 | 1973 | last_event_timestamp = event->timestamp; |
284f4730 JB |
1974 | interrupt_signal (); |
1975 | return; | |
1976 | } | |
1977 | ||
1978 | if (c && c == stop_character) | |
1979 | { | |
1980 | sys_suspend (); | |
1981 | return; | |
1982 | } | |
284f4730 JB |
1983 | } |
1984 | ||
1985 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) | |
1986 | kbd_store_ptr = kbd_buffer; | |
1987 | ||
1988 | /* Don't let the very last slot in the buffer become full, | |
1989 | since that would make the two pointers equal, | |
1990 | and that is indistinguishable from an empty buffer. | |
1991 | Discard the event if it would fill the last slot. */ | |
1992 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) | |
1993 | { | |
1994 | kbd_store_ptr->kind = event->kind; | |
27203ead RS |
1995 | if (event->kind == selection_request_event) |
1996 | { | |
1997 | /* We must not use the ordinary copying code for this case, | |
1998 | since `part' is an enum and copying it might not copy enough | |
1999 | in this case. */ | |
2000 | bcopy (event, kbd_store_ptr, sizeof (*event)); | |
2001 | } | |
2002 | else | |
2003 | { | |
2004 | kbd_store_ptr->code = event->code; | |
2005 | kbd_store_ptr->part = event->part; | |
2006 | kbd_store_ptr->frame_or_window = event->frame_or_window; | |
2007 | kbd_store_ptr->modifiers = event->modifiers; | |
2008 | kbd_store_ptr->x = event->x; | |
2009 | kbd_store_ptr->y = event->y; | |
2010 | kbd_store_ptr->timestamp = event->timestamp; | |
2011 | } | |
7b4aedb9 JB |
2012 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2013 | - kbd_buffer] | |
2014 | = event->frame_or_window); | |
284f4730 JB |
2015 | |
2016 | kbd_store_ptr++; | |
2017 | } | |
2018 | } | |
a612e298 RS |
2019 | \f |
2020 | /* Read one event from the event buffer, waiting if necessary. | |
2021 | The value is a Lisp object representing the event. | |
2022 | The value is nil for an event that should be ignored, | |
2023 | or that was handled here. | |
2024 | We always read and discard one event. */ | |
284f4730 JB |
2025 | |
2026 | static Lisp_Object | |
2027 | kbd_buffer_get_event () | |
2028 | { | |
2029 | register int c; | |
2030 | Lisp_Object obj; | |
2031 | ||
2032 | if (noninteractive) | |
2033 | { | |
2034 | c = getchar (); | |
2035 | XSET (obj, Lisp_Int, c); | |
2036 | return obj; | |
2037 | } | |
2038 | ||
2039 | /* Wait until there is input available. */ | |
2040 | for (;;) | |
2041 | { | |
284f4730 JB |
2042 | if (!EVENT_QUEUES_EMPTY) |
2043 | break; | |
2044 | ||
2045 | /* If the quit flag is set, then read_char will return | |
2046 | quit_char, so that counts as "available input." */ | |
2047 | if (!NILP (Vquit_flag)) | |
2048 | quit_throw_to_read_char (); | |
2049 | ||
2050 | /* One way or another, wait until input is available; then, if | |
2051 | interrupt handlers have not read it, read it now. */ | |
2052 | ||
2053 | #ifdef OLDVMS | |
2054 | wait_for_kbd_input (); | |
2055 | #else | |
2056 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2057 | #ifdef SIGIO | |
2058 | gobble_input (0); | |
2059 | #endif /* SIGIO */ | |
2060 | if (EVENT_QUEUES_EMPTY) | |
2061 | { | |
f76475ad JB |
2062 | Lisp_Object minus_one; |
2063 | ||
2064 | XSET (minus_one, Lisp_Int, -1); | |
2065 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 JB |
2066 | |
2067 | if (!interrupt_input && EVENT_QUEUES_EMPTY) | |
bedae5a5 RS |
2068 | /* Pass 1 for EXPECT since we just waited to have input. */ |
2069 | read_avail_input (1); | |
284f4730 JB |
2070 | } |
2071 | #endif /* not VMS */ | |
2072 | } | |
2073 | ||
2074 | /* At this point, we know that there is a readable event available | |
2075 | somewhere. If the event queue is empty, then there must be a | |
2076 | mouse movement enabled and available. */ | |
2077 | if (kbd_fetch_ptr != kbd_store_ptr) | |
2078 | { | |
cd21b839 | 2079 | struct input_event *event; |
3e51c7b7 | 2080 | |
856bf263 | 2081 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
cd21b839 JB |
2082 | ? kbd_fetch_ptr |
2083 | : kbd_buffer); | |
3e51c7b7 | 2084 | |
cd21b839 | 2085 | last_event_timestamp = event->timestamp; |
cd21b839 | 2086 | |
4bb994d1 JB |
2087 | obj = Qnil; |
2088 | ||
48e416d4 | 2089 | /* These two kinds of events get special handling |
a612e298 RS |
2090 | and don't actually appear to the command loop. |
2091 | We return nil for them. */ | |
48e416d4 RS |
2092 | if (event->kind == selection_request_event) |
2093 | { | |
598a9fa7 | 2094 | #ifdef HAVE_X11 |
48e416d4 RS |
2095 | x_handle_selection_request (event); |
2096 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2097 | #else |
2098 | /* We're getting selection request events, but we don't have | |
2099 | a window system. */ | |
2100 | abort (); | |
2101 | #endif | |
48e416d4 RS |
2102 | } |
2103 | ||
1e12dd87 | 2104 | else if (event->kind == selection_clear_event) |
48e416d4 | 2105 | { |
598a9fa7 | 2106 | #ifdef HAVE_X11 |
48e416d4 RS |
2107 | x_handle_selection_clear (event); |
2108 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2109 | #else |
2110 | /* We're getting selection request events, but we don't have | |
2111 | a window system. */ | |
2112 | abort (); | |
2113 | #endif | |
48e416d4 | 2114 | } |
990acea3 RS |
2115 | #ifdef HAVE_X11 |
2116 | else if (event->kind == delete_window_event) | |
2117 | { | |
58f6c8ab RS |
2118 | Lisp_Object tail, frame; |
2119 | struct frame *f; | |
2120 | ||
2121 | /* If the user destroys the only frame, Emacs should exit. | |
2122 | Count visible frames and iconified frames. */ | |
2123 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
2124 | { | |
2125 | frame = XCONS (tail)->car; | |
2126 | if (XTYPE (frame) != Lisp_Frame || EQ (frame, event->frame_or_window)) | |
2127 | continue; | |
2128 | f = XFRAME (frame); | |
2129 | if (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f)) | |
2130 | break; | |
2131 | } | |
990acea3 | 2132 | |
58f6c8ab | 2133 | if (! CONSP (tail)) |
80e4aa30 | 2134 | Fkill_emacs (Qnil); |
854f3a54 RS |
2135 | |
2136 | Fdelete_frame (event->frame_or_window, Qt); | |
2137 | kbd_fetch_ptr = event + 1; | |
990acea3 RS |
2138 | } |
2139 | #endif | |
f5e09c8b RS |
2140 | else if (event->kind == menu_bar_event) |
2141 | { | |
2142 | /* The event value is in the frame_or_window slot. */ | |
2143 | obj = event->frame_or_window; | |
2144 | kbd_fetch_ptr = event + 1; | |
2145 | } | |
a8015ab5 KH |
2146 | else if (event->kind == buffer_switch_event) |
2147 | { | |
2148 | /* The value doesn't matter here; only the type is tested. */ | |
2149 | XSET (obj, Lisp_Buffer, current_buffer); | |
2150 | kbd_fetch_ptr = event + 1; | |
2151 | } | |
a612e298 RS |
2152 | /* Just discard these, by returning nil. |
2153 | (They shouldn't be found in the buffer, | |
2154 | but on some machines it appears they do show up.) */ | |
2155 | else if (event->kind == no_event) | |
2156 | kbd_fetch_ptr = event + 1; | |
48e416d4 | 2157 | |
4bb994d1 JB |
2158 | /* If this event is on a different frame, return a switch-frame this |
2159 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2160 | else |
2161 | { | |
a6d53864 | 2162 | #ifdef MULTI_FRAME |
9b8eb840 | 2163 | Lisp_Object frame; |
1e12dd87 | 2164 | Lisp_Object focus; |
7b4aedb9 | 2165 | |
9b8eb840 | 2166 | frame = event->frame_or_window; |
1e12dd87 RS |
2167 | if (XTYPE (frame) == Lisp_Window) |
2168 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
4bb994d1 | 2169 | |
1e12dd87 RS |
2170 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2171 | if (! NILP (focus)) | |
2172 | frame = focus; | |
07d2b8de | 2173 | |
1e12dd87 RS |
2174 | if (! EQ (frame, internal_last_event_frame) |
2175 | && XFRAME (frame) != selected_frame) | |
2176 | obj = make_lispy_switch_frame (frame); | |
2177 | internal_last_event_frame = frame; | |
a6d53864 | 2178 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2179 | |
1e12dd87 RS |
2180 | /* If we didn't decide to make a switch-frame event, go ahead |
2181 | and build a real event from the queue entry. */ | |
cd21b839 | 2182 | |
1e12dd87 RS |
2183 | if (NILP (obj)) |
2184 | { | |
2185 | obj = make_lispy_event (event); | |
2186 | ||
2187 | /* Wipe out this event, to catch bugs. */ | |
2188 | event->kind = no_event; | |
2189 | (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] | |
2190 | = Qnil); | |
2191 | ||
2192 | kbd_fetch_ptr = event + 1; | |
2193 | } | |
4bb994d1 | 2194 | } |
284f4730 | 2195 | } |
a612e298 | 2196 | /* Try generating a mouse motion event. */ |
284f4730 JB |
2197 | else if (do_mouse_tracking && mouse_moved) |
2198 | { | |
7e85b935 | 2199 | FRAME_PTR f = 0; |
7b4aedb9 | 2200 | Lisp_Object bar_window; |
3c370943 | 2201 | enum scroll_bar_part part; |
e5d77022 JB |
2202 | Lisp_Object x, y; |
2203 | unsigned long time; | |
284f4730 | 2204 | |
7b4aedb9 | 2205 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2206 | |
2207 | obj = Qnil; | |
284f4730 | 2208 | |
07d2b8de | 2209 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2210 | /* Decide if we should generate a switch-frame event. Don't |
2211 | generate switch-frame events for motion outside of all Emacs | |
2212 | frames. */ | |
2213 | if (f) | |
cd21b839 | 2214 | { |
9b8eb840 | 2215 | Lisp_Object frame; |
4bb994d1 | 2216 | |
9b8eb840 | 2217 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 JB |
2218 | if (NILP (frame)) |
2219 | XSET (frame, Lisp_Frame, f); | |
2220 | ||
80645119 JB |
2221 | if (! EQ (frame, internal_last_event_frame) |
2222 | && XFRAME (frame) != selected_frame) | |
764cb3f9 | 2223 | obj = make_lispy_switch_frame (frame); |
80645119 | 2224 | internal_last_event_frame = frame; |
cd21b839 | 2225 | } |
68553292 | 2226 | #endif |
4bb994d1 | 2227 | |
68553292 | 2228 | #if defined(MULTI_FRAME) || defined(HAVE_MOUSE) |
4bb994d1 JB |
2229 | /* If we didn't decide to make a switch-frame event, go ahead and |
2230 | return a mouse-motion event. */ | |
2231 | if (NILP (obj)) | |
7b4aedb9 | 2232 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb RS |
2233 | #endif |
2234 | } | |
284f4730 JB |
2235 | else |
2236 | /* We were promised by the above while loop that there was | |
2237 | something for us to read! */ | |
2238 | abort (); | |
2239 | ||
2240 | input_pending = readable_events (); | |
2241 | ||
3c370943 JB |
2242 | #ifdef MULTI_FRAME |
2243 | Vlast_event_frame = internal_last_event_frame; | |
2244 | #endif | |
2245 | ||
284f4730 JB |
2246 | return (obj); |
2247 | } | |
a612e298 RS |
2248 | \f |
2249 | /* Process any events that are not user-visible, | |
2250 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2251 | |
2252 | void | |
2253 | swallow_events () | |
2254 | { | |
2255 | while (kbd_fetch_ptr != kbd_store_ptr) | |
2256 | { | |
2257 | struct input_event *event; | |
2258 | ||
2259 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) | |
2260 | ? kbd_fetch_ptr | |
2261 | : kbd_buffer); | |
2262 | ||
2263 | last_event_timestamp = event->timestamp; | |
2264 | ||
2265 | /* These two kinds of events get special handling | |
2266 | and don't actually appear to the command loop. */ | |
2267 | if (event->kind == selection_request_event) | |
2268 | { | |
2269 | #ifdef HAVE_X11 | |
2270 | x_handle_selection_request (event); | |
2271 | kbd_fetch_ptr = event + 1; | |
2272 | #else | |
2273 | /* We're getting selection request events, but we don't have | |
2274 | a window system. */ | |
2275 | abort (); | |
2276 | #endif | |
2277 | } | |
2278 | ||
2279 | else if (event->kind == selection_clear_event) | |
2280 | { | |
2281 | #ifdef HAVE_X11 | |
2282 | x_handle_selection_clear (event); | |
2283 | kbd_fetch_ptr = event + 1; | |
2284 | #else | |
2285 | /* We're getting selection request events, but we don't have | |
2286 | a window system. */ | |
2287 | abort (); | |
2288 | #endif | |
2289 | } | |
2290 | else | |
2291 | break; | |
2292 | } | |
2293 | ||
2294 | get_input_pending (&input_pending); | |
2295 | } | |
a612e298 | 2296 | \f |
284f4730 | 2297 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2298 | static Lisp_Object accent_key_syms; |
270a208f | 2299 | static Lisp_Object system_key_syms; |
284f4730 JB |
2300 | static Lisp_Object func_key_syms; |
2301 | static Lisp_Object mouse_syms; | |
2302 | ||
270a208f | 2303 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2304 | |
e9bf89a0 RS |
2305 | /* This is a list of keysym codes for special "accent" characters. |
2306 | It parallels lispy_accent_keys. */ | |
2307 | ||
2308 | static int lispy_accent_codes[] = | |
2309 | { | |
79a7046c | 2310 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2311 | XK_dead_circumflex, |
79a7046c RS |
2312 | #else |
2313 | 0, | |
2314 | #endif | |
2315 | #ifdef XK_dead_grave | |
e9bf89a0 | 2316 | XK_dead_grave, |
79a7046c RS |
2317 | #else |
2318 | 0, | |
2319 | #endif | |
2320 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2321 | XK_dead_tilde, |
79a7046c RS |
2322 | #else |
2323 | 0, | |
2324 | #endif | |
2325 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2326 | XK_dead_diaeresis, |
79a7046c RS |
2327 | #else |
2328 | 0, | |
2329 | #endif | |
2330 | #ifdef XK_dead_macron | |
e9bf89a0 | 2331 | XK_dead_macron, |
79a7046c RS |
2332 | #else |
2333 | 0, | |
2334 | #endif | |
2335 | #ifdef XK_dead_degree | |
e9bf89a0 | 2336 | XK_dead_degree, |
79a7046c RS |
2337 | #else |
2338 | 0, | |
2339 | #endif | |
2340 | #ifdef XK_dead_acute | |
e9bf89a0 | 2341 | XK_dead_acute, |
79a7046c RS |
2342 | #else |
2343 | 0, | |
2344 | #endif | |
2345 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2346 | XK_dead_cedilla, |
79a7046c RS |
2347 | #else |
2348 | 0, | |
2349 | #endif | |
2350 | #ifdef XK_dead_breve | |
e9bf89a0 | 2351 | XK_dead_breve, |
79a7046c RS |
2352 | #else |
2353 | 0, | |
2354 | #endif | |
2355 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2356 | XK_dead_ogonek, |
79a7046c RS |
2357 | #else |
2358 | 0, | |
2359 | #endif | |
2360 | #ifdef XK_dead_caron | |
e9bf89a0 | 2361 | XK_dead_caron, |
79a7046c RS |
2362 | #else |
2363 | 0, | |
2364 | #endif | |
2365 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2366 | XK_dead_doubleacute, |
79a7046c RS |
2367 | #else |
2368 | 0, | |
2369 | #endif | |
2370 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2371 | XK_dead_abovedot, |
79a7046c RS |
2372 | #else |
2373 | 0, | |
2374 | #endif | |
e9bf89a0 RS |
2375 | }; |
2376 | ||
2377 | /* This is a list of Lisp names for special "accent" characters. | |
2378 | It parallels lispy_accent_codes. */ | |
2379 | ||
2380 | static char *lispy_accent_keys[] = | |
2381 | { | |
2382 | "dead-circumflex", | |
2383 | "dead-grave", | |
2384 | "dead-tilde", | |
2385 | "dead-diaeresis", | |
2386 | "dead-macron", | |
2387 | "dead-degree", | |
2388 | "dead-acute", | |
2389 | "dead-cedilla", | |
2390 | "dead-breve", | |
2391 | "dead-ogonek", | |
2392 | "dead-caron", | |
2393 | "dead-doubleacute", | |
2394 | "dead-abovedot", | |
2395 | }; | |
2396 | ||
284f4730 JB |
2397 | /* You'll notice that this table is arranged to be conveniently |
2398 | indexed by X Windows keysym values. */ | |
2399 | static char *lispy_function_keys[] = | |
2400 | { | |
2401 | /* X Keysym value */ | |
2402 | ||
80e4aa30 | 2403 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2404 | "backspace", |
2405 | "tab", | |
2406 | "linefeed", | |
2407 | "clear", | |
2408 | 0, | |
2409 | "return", | |
2410 | 0, 0, | |
2411 | 0, 0, 0, /* 0xff10 */ | |
2412 | "pause", | |
2413 | 0, 0, 0, 0, 0, 0, 0, | |
2414 | "escape", | |
2415 | 0, 0, 0, 0, | |
2416 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2417 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2418 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2419 | ||
284f4730 JB |
2420 | "home", /* 0xff50 */ /* IsCursorKey */ |
2421 | "left", | |
2422 | "up", | |
2423 | "right", | |
2424 | "down", | |
2425 | "prior", | |
2426 | "next", | |
2427 | "end", | |
2428 | "begin", | |
2429 | 0, /* 0xff59 */ | |
2430 | 0, 0, 0, 0, 0, 0, | |
2431 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2432 | "print", | |
2433 | "execute", | |
2434 | "insert", | |
2435 | 0, /* 0xff64 */ | |
2436 | "undo", | |
2437 | "redo", | |
2438 | "menu", | |
2439 | "find", | |
2440 | "cancel", | |
2441 | "help", | |
2442 | "break", /* 0xff6b */ | |
2443 | ||
9fdbfdf8 | 2444 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2445 | 0, /* 0xff76 */ |
36ae397e | 2446 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2447 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2448 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2449 | "kp-tab", /* 0xff89 */ | |
2450 | 0, 0, 0, | |
2451 | "kp-enter", /* 0xff8d */ | |
2452 | 0, 0, 0, | |
2453 | "kp-f1", /* 0xff91 */ | |
2454 | "kp-f2", | |
2455 | "kp-f3", | |
2456 | "kp-f4", | |
872157e7 RS |
2457 | "kp-home", /* 0xff95 */ |
2458 | "kp-left", | |
2459 | "kp-up", | |
2460 | "kp-right", | |
2461 | "kp-down", | |
2462 | "kp-prior", /* kp-page-up */ | |
2463 | "kp-next", /* kp-page-down */ | |
2464 | "kp-end", | |
2465 | "kp-begin", | |
2466 | "kp-insert", | |
2467 | "kp-delete", | |
2468 | 0, /* 0xffa0 */ | |
2469 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2470 | "kp-multiply", /* 0xffaa */ |
2471 | "kp-add", | |
2472 | "kp-separator", | |
2473 | "kp-subtract", | |
2474 | "kp-decimal", | |
2475 | "kp-divide", /* 0xffaf */ | |
2476 | "kp-0", /* 0xffb0 */ | |
2477 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2478 | 0, /* 0xffba */ | |
2479 | 0, 0, | |
2480 | "kp-equal", /* 0xffbd */ | |
2481 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2482 | "f2", |
2483 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2484 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2485 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2486 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2487 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2488 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2489 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2490 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2491 | }; |
2492 | ||
2493 | static char *lispy_mouse_names[] = | |
2494 | { | |
2495 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2496 | }; | |
2497 | ||
3c370943 | 2498 | /* Scroll bar parts. */ |
4bb994d1 JB |
2499 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2500 | ||
3c370943 JB |
2501 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2502 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2503 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2504 | }; | |
2505 | ||
2506 | ||
7b4aedb9 | 2507 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2508 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2509 | |
2510 | The elements have the form | |
2511 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2512 | where REST is the cdr of a position as it would be reported in the event. | |
2513 | ||
2514 | The make_lispy_event function stores positions here to tell the | |
2515 | difference between click and drag events, and to store the starting | |
2516 | location to be included in drag events. */ | |
2517 | ||
2518 | static Lisp_Object button_down_location; | |
88cb0656 | 2519 | |
fbcd35bd JB |
2520 | /* Information about the most recent up-going button event: Which |
2521 | button, what location, and what time. */ | |
2522 | ||
559f9d04 RS |
2523 | static int last_mouse_button; |
2524 | static int last_mouse_x; | |
2525 | static int last_mouse_y; | |
2526 | static unsigned long button_down_time; | |
fbcd35bd | 2527 | |
564dc952 JB |
2528 | /* The maximum time between clicks to make a double-click, |
2529 | or Qnil to disable double-click detection, | |
2530 | or Qt for no time limit. */ | |
2531 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2532 | |
2533 | /* The number of clicks in this multiple-click. */ | |
2534 | ||
2535 | int double_click_count; | |
2536 | ||
bb936752 FP |
2537 | #ifdef USE_X_TOOLKIT |
2538 | extern Lisp_Object map_event_to_object (); | |
2539 | #endif /* USE_X_TOOLKIT */ | |
2540 | ||
284f4730 JB |
2541 | /* Given a struct input_event, build the lisp event which represents |
2542 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2543 | movement buffer, which should have a movement event in it. |
2544 | ||
2545 | Note that events must be passed to this function in the order they | |
2546 | are received; this function stores the location of button presses | |
2547 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2548 | |
2549 | static Lisp_Object | |
2550 | make_lispy_event (event) | |
2551 | struct input_event *event; | |
2552 | { | |
79a7046c RS |
2553 | int i; |
2554 | ||
284f4730 JB |
2555 | #ifdef SWITCH_ENUM_BUG |
2556 | switch ((int) event->kind) | |
2557 | #else | |
2558 | switch (event->kind) | |
2559 | #endif | |
2560 | { | |
284f4730 JB |
2561 | /* A simple keystroke. */ |
2562 | case ascii_keystroke: | |
86e5706b | 2563 | { |
e9bf89a0 | 2564 | int c = event->code & 0377; |
5a1c6df8 JB |
2565 | /* Turn ASCII characters into control characters |
2566 | when proper. */ | |
2567 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2568 | c = make_ctrl_char (c); |
2569 | ||
2570 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2571 | just above, and the shift key was taken care of by the X code, | |
2572 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2573 | c |= (event->modifiers |
2574 | & (meta_modifier | alt_modifier | |
2575 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2576 | button_down_time = 0; |
86e5706b RS |
2577 | return c; |
2578 | } | |
284f4730 JB |
2579 | |
2580 | /* A function key. The symbol may need to have modifier prefixes | |
2581 | tacked onto it. */ | |
2582 | case non_ascii_keystroke: | |
559f9d04 | 2583 | button_down_time = 0; |
e9bf89a0 RS |
2584 | |
2585 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2586 | if (event->code == lispy_accent_codes[i]) | |
2587 | return modify_event_symbol (i, | |
2588 | event->modifiers, | |
80e4aa30 | 2589 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2590 | lispy_accent_keys, &accent_key_syms, |
2591 | (sizeof (lispy_accent_keys) | |
2592 | / sizeof (lispy_accent_keys[0]))); | |
2593 | ||
270a208f | 2594 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2595 | if (event->code & (1 << 28)) |
2596 | { | |
2597 | /* We need to use an alist rather than a vector as the cache | |
2598 | since we can't make a vector long enuf. */ | |
270a208f RS |
2599 | if (NILP (system_key_syms)) |
2600 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2601 | return modify_event_symbol (event->code & 0xffffff, |
2602 | event->modifiers, | |
270a208f RS |
2603 | Qfunction_key, Vsystem_key_alist, |
2604 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2605 | } |
2606 | ||
e9bf89a0 RS |
2607 | return modify_event_symbol (event->code - 0xff00, |
2608 | event->modifiers, | |
80e4aa30 | 2609 | Qfunction_key, Qnil, |
284f4730 JB |
2610 | lispy_function_keys, &func_key_syms, |
2611 | (sizeof (lispy_function_keys) | |
2612 | / sizeof (lispy_function_keys[0]))); | |
2613 | break; | |
2614 | ||
5846638c | 2615 | #if defined(MULTI_FRAME) || defined(HAVE_MOUSE) |
88cb0656 JB |
2616 | /* A mouse click. Figure out where it is, decide whether it's |
2617 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2618 | case mouse_click: |
3c370943 | 2619 | case scroll_bar_click: |
284f4730 | 2620 | { |
e9bf89a0 | 2621 | int button = event->code; |
559f9d04 | 2622 | int is_double; |
7b4aedb9 | 2623 | Lisp_Object position; |
dbc4e1c1 JB |
2624 | Lisp_Object *start_pos_ptr; |
2625 | Lisp_Object start_pos; | |
284f4730 | 2626 | |
7b4aedb9 | 2627 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2628 | abort (); |
2629 | ||
7b4aedb9 JB |
2630 | /* Build the position as appropriate for this mouse click. */ |
2631 | if (event->kind == mouse_click) | |
284f4730 | 2632 | { |
7b4aedb9 | 2633 | int part; |
598a9fa7 | 2634 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2635 | Lisp_Object window; |
7b4aedb9 | 2636 | Lisp_Object posn; |
9e20143a RS |
2637 | int row, column; |
2638 | ||
5da3133a RS |
2639 | /* Ignore mouse events that were made on frame that |
2640 | have been deleted. */ | |
2641 | if (! FRAME_LIVE_P (f)) | |
2642 | return Qnil; | |
2643 | ||
9e20143a RS |
2644 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
2645 | &column, &row, 0, 0); | |
7b4aedb9 | 2646 | |
bb936752 FP |
2647 | #ifdef USE_X_TOOLKIT |
2648 | if (FRAME_EXTERNAL_MENU_BAR (f) && XINT (event->y) == -1) | |
7b260679 | 2649 | #else |
9e20143a | 2650 | if (row < FRAME_MENU_BAR_LINES (f)) |
7b260679 | 2651 | #endif |
bb936752 | 2652 | { |
b7c49376 | 2653 | Lisp_Object items, item; |
0a0e8fe6 RS |
2654 | int hpos; |
2655 | int i; | |
2656 | ||
2657 | /* Activate the menu bar on the down event. If the | |
2658 | up event comes in before the menu code can deal with it, | |
2659 | just ignore it. */ | |
2660 | if (! (event->modifiers & down_modifier)) | |
2661 | return Qnil; | |
0aafc975 | 2662 | |
7b260679 | 2663 | #ifdef USE_X_TOOLKIT |
bb936752 FP |
2664 | /* The click happened in the menubar. |
2665 | Look for the menu item selected. */ | |
b7c49376 | 2666 | item = map_event_to_object (event, f); |
0aafc975 | 2667 | |
bb936752 FP |
2668 | XFASTINT (event->y) = 1; |
2669 | #else /* not USE_X_TOOLKIT */ | |
f2ae6b3f | 2670 | item = Qnil; |
5ec75a55 | 2671 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2672 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2673 | { |
2674 | Lisp_Object pos, string; | |
b7c49376 RS |
2675 | string = XVECTOR (items)->contents[i + 1]; |
2676 | pos = XVECTOR (items)->contents[i + 2]; | |
2677 | if (NILP (string)) | |
2678 | break; | |
9e20143a RS |
2679 | if (column >= XINT (pos) |
2680 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2681 | { |
2682 | item = XVECTOR (items)->contents[i]; | |
2683 | break; | |
2684 | } | |
5ec75a55 | 2685 | } |
bb936752 | 2686 | #endif /* not USE_X_TOOLKIT */ |
9e20143a | 2687 | |
5ec75a55 RS |
2688 | position |
2689 | = Fcons (event->frame_or_window, | |
2690 | Fcons (Qmenu_bar, | |
2691 | Fcons (Fcons (event->x, event->y), | |
2692 | Fcons (make_number (event->timestamp), | |
2693 | Qnil)))); | |
2694 | ||
b7c49376 | 2695 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2696 | } |
0aafc975 | 2697 | |
9e20143a | 2698 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 RS |
2699 | |
2700 | if (XTYPE (window) != Lisp_Window) | |
78ced549 RS |
2701 | { |
2702 | window = event->frame_or_window; | |
2703 | posn = Qnil; | |
2704 | } | |
284f4730 | 2705 | else |
7b4aedb9 | 2706 | { |
9e20143a RS |
2707 | int pixcolumn, pixrow; |
2708 | column -= XINT (XWINDOW (window)->left); | |
2709 | row -= XINT (XWINDOW (window)->top); | |
2710 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2711 | XSETINT (event->x, pixcolumn); | |
2712 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2713 | |
7b4aedb9 JB |
2714 | if (part == 1) |
2715 | posn = Qmode_line; | |
2716 | else if (part == 2) | |
2717 | posn = Qvertical_line; | |
2718 | else | |
dbc4e1c1 JB |
2719 | XSET (posn, Lisp_Int, |
2720 | buffer_posn_from_coords (XWINDOW (window), | |
9e20143a | 2721 | column, row)); |
7b4aedb9 JB |
2722 | } |
2723 | ||
5ec75a55 RS |
2724 | position |
2725 | = Fcons (window, | |
2726 | Fcons (posn, | |
2727 | Fcons (Fcons (event->x, event->y), | |
2728 | Fcons (make_number (event->timestamp), | |
2729 | Qnil)))); | |
284f4730 | 2730 | } |
7b4aedb9 | 2731 | else |
88cb0656 | 2732 | { |
9e20143a RS |
2733 | Lisp_Object window; |
2734 | Lisp_Object portion_whole; | |
2735 | Lisp_Object part; | |
2736 | ||
2737 | window = event->frame_or_window; | |
2738 | portion_whole = Fcons (event->x, event->y); | |
2739 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2740 | |
2741 | position = | |
2742 | Fcons (window, | |
3c370943 | 2743 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2744 | Fcons (portion_whole, |
2745 | Fcons (make_number (event->timestamp), | |
9e20143a | 2746 | Fcons (part, Qnil))))); |
88cb0656 JB |
2747 | } |
2748 | ||
dbc4e1c1 JB |
2749 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2750 | ||
2751 | start_pos = *start_pos_ptr; | |
2752 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2753 | |
559f9d04 RS |
2754 | is_double = (button == last_mouse_button |
2755 | && XINT (event->x) == last_mouse_x | |
2756 | && XINT (event->y) == last_mouse_y | |
2757 | && button_down_time != 0 | |
2758 | && (EQ (Vdouble_click_time, Qt) | |
2759 | || (INTEGERP (Vdouble_click_time) | |
2760 | && ((int)(event->timestamp - button_down_time) | |
2761 | < XINT (Vdouble_click_time))))); | |
2762 | last_mouse_button = button; | |
2763 | last_mouse_x = XINT (event->x); | |
2764 | last_mouse_y = XINT (event->y); | |
2765 | ||
7b4aedb9 JB |
2766 | /* If this is a button press, squirrel away the location, so |
2767 | we can decide later whether it was a click or a drag. */ | |
2768 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2769 | { |
2770 | if (is_double) | |
2771 | { | |
2772 | double_click_count++; | |
2773 | event->modifiers |= ((double_click_count > 2) | |
2774 | ? triple_modifier | |
2775 | : double_modifier); | |
2776 | } | |
2777 | else | |
2778 | double_click_count = 1; | |
2779 | button_down_time = event->timestamp; | |
2780 | *start_pos_ptr = Fcopy_alist (position); | |
2781 | } | |
7b4aedb9 | 2782 | |
88cb0656 | 2783 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2784 | see if this was a click or a drag. */ |
88cb0656 JB |
2785 | else if (event->modifiers & up_modifier) |
2786 | { | |
48e416d4 RS |
2787 | /* If we did not see a down before this up, |
2788 | ignore the up. Probably this happened because | |
2789 | the down event chose a menu item. | |
2790 | It would be an annoyance to treat the release | |
2791 | of the button that chose the menu item | |
2792 | as a separate event. */ | |
2793 | ||
2794 | if (XTYPE (start_pos) != Lisp_Cons) | |
2795 | return Qnil; | |
2796 | ||
88cb0656 | 2797 | event->modifiers &= ~up_modifier; |
48e416d4 | 2798 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
dbc4e1c1 JB |
2799 | if (XTYPE (start_pos) != Lisp_Cons) |
2800 | event->modifiers |= click_modifier; | |
2801 | else | |
48e416d4 | 2802 | #endif |
dbc4e1c1 JB |
2803 | { |
2804 | /* The third element of every position should be the (x,y) | |
2805 | pair. */ | |
9b8eb840 | 2806 | Lisp_Object down; |
dbc4e1c1 | 2807 | |
9b8eb840 | 2808 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
2809 | if (EQ (event->x, XCONS (down)->car) |
2810 | && EQ (event->y, XCONS (down)->cdr)) | |
2811 | { | |
559f9d04 RS |
2812 | if (is_double && double_click_count > 1) |
2813 | event->modifiers |= ((double_click_count > 2) | |
2814 | ? triple_modifier | |
2815 | : double_modifier); | |
fbcd35bd | 2816 | else |
559f9d04 | 2817 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2818 | } |
2819 | else | |
2820 | { | |
559f9d04 | 2821 | button_down_time = 0; |
fbcd35bd JB |
2822 | event->modifiers |= drag_modifier; |
2823 | } | |
dbc4e1c1 | 2824 | } |
88cb0656 JB |
2825 | } |
2826 | else | |
2827 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2828 | the up_modifier set. */ |
88cb0656 JB |
2829 | abort (); |
2830 | ||
88cb0656 | 2831 | { |
7b4aedb9 | 2832 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
2833 | Lisp_Object head; |
2834 | ||
2835 | head = modify_event_symbol (button, | |
2836 | event->modifiers, | |
2837 | Qmouse_click, Qnil, | |
2838 | lispy_mouse_names, &mouse_syms, | |
2839 | (sizeof (lispy_mouse_names) | |
2840 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 2841 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
2842 | return Fcons (head, |
2843 | Fcons (start_pos, | |
2844 | Fcons (position, | |
2845 | Qnil))); | |
fbcd35bd JB |
2846 | else if (event->modifiers & (double_modifier | triple_modifier)) |
2847 | return Fcons (head, | |
2848 | Fcons (position, | |
2849 | Fcons (make_number (double_click_count), | |
2850 | Qnil))); | |
88cb0656 JB |
2851 | else |
2852 | return Fcons (head, | |
7b4aedb9 | 2853 | Fcons (position, |
88cb0656 JB |
2854 | Qnil)); |
2855 | } | |
284f4730 | 2856 | } |
5846638c | 2857 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 2858 | |
284f4730 JB |
2859 | /* The 'kind' field of the event is something we don't recognize. */ |
2860 | default: | |
48e416d4 | 2861 | abort (); |
284f4730 JB |
2862 | } |
2863 | } | |
2864 | ||
68553292 | 2865 | #if defined(MULTI_FRAME) || defined(HAVE_MOUSE) |
6cbff1cb | 2866 | |
284f4730 | 2867 | static Lisp_Object |
7b4aedb9 | 2868 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 2869 | FRAME_PTR frame; |
7b4aedb9 | 2870 | Lisp_Object bar_window; |
3c370943 | 2871 | enum scroll_bar_part part; |
284f4730 | 2872 | Lisp_Object x, y; |
e5d77022 | 2873 | unsigned long time; |
284f4730 | 2874 | { |
68553292 | 2875 | #ifdef MULTI_FRAME |
3c370943 | 2876 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 2877 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 2878 | { |
9b8eb840 | 2879 | Lisp_Object part_sym; |
4bb994d1 | 2880 | |
9b8eb840 | 2881 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 2882 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 2883 | (Fcons (Fcons (bar_window, |
3c370943 | 2884 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
2885 | Fcons (Fcons (x, y), |
2886 | Fcons (make_number (time), | |
cb5df6ae | 2887 | Fcons (part_sym, |
4bb994d1 JB |
2888 | Qnil))))), |
2889 | Qnil))); | |
2890 | } | |
2891 | ||
2892 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 2893 | else |
68553292 | 2894 | #endif /* MULTI_FRAME */ |
284f4730 | 2895 | { |
4bb994d1 | 2896 | int area; |
9e20143a | 2897 | Lisp_Object window; |
4bb994d1 | 2898 | Lisp_Object posn; |
9e20143a RS |
2899 | int column, row; |
2900 | ||
68553292 | 2901 | #ifdef MULTI_FRAME |
9e20143a | 2902 | if (frame) |
68553292 RS |
2903 | #else |
2904 | if (1) | |
2905 | #endif | |
047688cb RS |
2906 | { |
2907 | /* It's in a frame; which window on that frame? */ | |
2908 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
2909 | window = window_from_coordinates (frame, column, row, &area); | |
2910 | } | |
9e20143a RS |
2911 | else |
2912 | window = Qnil; | |
4bb994d1 JB |
2913 | |
2914 | if (XTYPE (window) == Lisp_Window) | |
2915 | { | |
9e20143a RS |
2916 | int pixcolumn, pixrow; |
2917 | column -= XINT (XWINDOW (window)->left); | |
2918 | row -= XINT (XWINDOW (window)->top); | |
2919 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
2920 | XSETINT (x, pixcolumn); | |
2921 | XSETINT (y, pixrow); | |
4bb994d1 JB |
2922 | |
2923 | if (area == 1) | |
2924 | posn = Qmode_line; | |
2925 | else if (area == 2) | |
2926 | posn = Qvertical_line; | |
2927 | else | |
2928 | XSET (posn, Lisp_Int, | |
9e20143a | 2929 | buffer_posn_from_coords (XWINDOW (window), column, row)); |
4bb994d1 | 2930 | } |
68553292 | 2931 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
2932 | else if (frame != 0) |
2933 | { | |
2934 | XSET (window, Lisp_Frame, frame); | |
2935 | posn = Qnil; | |
2936 | } | |
68553292 | 2937 | #endif |
284f4730 | 2938 | else |
4bb994d1 JB |
2939 | { |
2940 | window = Qnil; | |
2941 | posn = Qnil; | |
f76b81d6 JB |
2942 | XFASTINT (x) = 0; |
2943 | XFASTINT (y) = 0; | |
4bb994d1 | 2944 | } |
284f4730 | 2945 | |
4bb994d1 JB |
2946 | return Fcons (Qmouse_movement, |
2947 | Fcons (Fcons (window, | |
2948 | Fcons (posn, | |
2949 | Fcons (Fcons (x, y), | |
2950 | Fcons (make_number (time), | |
2951 | Qnil)))), | |
2952 | Qnil)); | |
2953 | } | |
284f4730 JB |
2954 | } |
2955 | ||
68553292 | 2956 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 2957 | |
cd21b839 JB |
2958 | /* Construct a switch frame event. */ |
2959 | static Lisp_Object | |
2960 | make_lispy_switch_frame (frame) | |
2961 | Lisp_Object frame; | |
2962 | { | |
2963 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
2964 | } | |
0a7f1fc0 JB |
2965 | \f |
2966 | /* Manipulating modifiers. */ | |
284f4730 | 2967 | |
0a7f1fc0 | 2968 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 2969 | |
0a7f1fc0 JB |
2970 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
2971 | SYMBOL's name of the end of the modifiers; the string from this | |
2972 | position is the unmodified symbol name. | |
284f4730 | 2973 | |
0a7f1fc0 JB |
2974 | This doesn't use any caches. */ |
2975 | static int | |
2976 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 2977 | Lisp_Object symbol; |
0a7f1fc0 | 2978 | int *modifier_end; |
284f4730 JB |
2979 | { |
2980 | struct Lisp_String *name; | |
2981 | int i; | |
2982 | int modifiers; | |
284f4730 JB |
2983 | |
2984 | CHECK_SYMBOL (symbol, 1); | |
2985 | ||
2986 | modifiers = 0; | |
2987 | name = XSYMBOL (symbol)->name; | |
2988 | ||
284f4730 | 2989 | |
0a7f1fc0 | 2990 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
2991 | switch (name->data[i]) |
2992 | { | |
0a7f1fc0 JB |
2993 | #define SINGLE_LETTER_MOD(bit) \ |
2994 | if (name->data[i+1] != '-') \ | |
2995 | goto no_more_modifiers; \ | |
2996 | modifiers |= bit; \ | |
fce33686 | 2997 | i += 2; |
0a7f1fc0 JB |
2998 | |
2999 | case 'A': | |
3000 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
3001 | break; |
3002 | ||
3003 | case 'C': | |
0a7f1fc0 | 3004 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
3005 | break; |
3006 | ||
3007 | case 'H': | |
0a7f1fc0 | 3008 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
3009 | break; |
3010 | ||
3011 | case 'M': | |
0a7f1fc0 | 3012 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
3013 | break; |
3014 | ||
3015 | case 'S': | |
0a7f1fc0 | 3016 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
3017 | break; |
3018 | ||
3019 | case 's': | |
86e5706b | 3020 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
3021 | break; |
3022 | ||
fce33686 JB |
3023 | case 'd': |
3024 | if (i + 5 > name->size) | |
3025 | goto no_more_modifiers; | |
3026 | if (! strncmp (name->data + i, "drag-", 5)) | |
3027 | { | |
fce33686 JB |
3028 | modifiers |= drag_modifier; |
3029 | i += 5; | |
3030 | } | |
3031 | else if (! strncmp (name->data + i, "down-", 5)) | |
3032 | { | |
fce33686 JB |
3033 | modifiers |= down_modifier; |
3034 | i += 5; | |
3035 | } | |
fbcd35bd JB |
3036 | else if (i + 7 <= name->size |
3037 | && ! strncmp (name->data + i, "double-", 7)) | |
3038 | { | |
3039 | modifiers |= double_modifier; | |
3040 | i += 7; | |
3041 | } | |
3042 | else | |
3043 | goto no_more_modifiers; | |
3044 | break; | |
3045 | ||
3046 | case 't': | |
3047 | if (i + 7 > name->size) | |
3048 | goto no_more_modifiers; | |
3049 | if (! strncmp (name->data + i, "triple-", 7)) | |
3050 | { | |
3051 | modifiers |= triple_modifier; | |
3052 | i += 7; | |
3053 | } | |
fce33686 JB |
3054 | else |
3055 | goto no_more_modifiers; | |
284f4730 JB |
3056 | break; |
3057 | ||
3058 | default: | |
3059 | goto no_more_modifiers; | |
0a7f1fc0 JB |
3060 | |
3061 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
3062 | } |
3063 | no_more_modifiers: | |
3064 | ||
0a7f1fc0 | 3065 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3066 | if (! (modifiers & (down_modifier | drag_modifier |
3067 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3068 | && i + 7 == name->size |
4bb994d1 | 3069 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3070 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3071 | modifiers |= click_modifier; |
3072 | ||
3073 | if (modifier_end) | |
3074 | *modifier_end = i; | |
3075 | ||
3076 | return modifiers; | |
3077 | } | |
3078 | ||
3079 | ||
3080 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
3081 | prepended to the string BASE[0..BASE_LEN-1]. | |
3082 | This doesn't use any caches. */ | |
3083 | static Lisp_Object | |
3084 | apply_modifiers_uncached (modifiers, base, base_len) | |
3085 | int modifiers; | |
3086 | char *base; | |
3087 | int base_len; | |
3088 | { | |
3089 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3090 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3091 | reference to it. */ | |
3092 | char *new_mods = | |
fbcd35bd | 3093 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3094 | int mod_len; |
284f4730 | 3095 | |
284f4730 | 3096 | { |
0a7f1fc0 JB |
3097 | char *p = new_mods; |
3098 | ||
3099 | /* Only the event queue may use the `up' modifier; it should always | |
3100 | be turned into a click or drag event before presented to lisp code. */ | |
3101 | if (modifiers & up_modifier) | |
3102 | abort (); | |
3103 | ||
3104 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3105 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3106 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3107 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3108 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3109 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3110 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3111 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3112 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3113 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3114 | /* The click modifier is denoted by the absence of other modifiers. */ |
3115 | ||
3116 | *p = '\0'; | |
3117 | ||
3118 | mod_len = p - new_mods; | |
3119 | } | |
284f4730 | 3120 | |
0a7f1fc0 | 3121 | { |
9b8eb840 | 3122 | Lisp_Object new_name; |
0a7f1fc0 | 3123 | |
9b8eb840 | 3124 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3125 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3126 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3127 | |
3128 | return Fintern (new_name, Qnil); | |
3129 | } | |
3130 | } | |
3131 | ||
3132 | ||
0a7f1fc0 JB |
3133 | static char *modifier_names[] = |
3134 | { | |
fbcd35bd | 3135 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3136 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3137 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3138 | }; |
80645119 | 3139 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3140 | |
3141 | static Lisp_Object modifier_symbols; | |
3142 | ||
3143 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3144 | static Lisp_Object | |
3145 | lispy_modifier_list (modifiers) | |
3146 | int modifiers; | |
3147 | { | |
3148 | Lisp_Object modifier_list; | |
3149 | int i; | |
3150 | ||
3151 | modifier_list = Qnil; | |
80645119 | 3152 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3153 | if (modifiers & (1<<i)) |
80645119 JB |
3154 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3155 | modifier_list); | |
0a7f1fc0 JB |
3156 | |
3157 | return modifier_list; | |
3158 | } | |
3159 | ||
3160 | ||
3161 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3162 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3163 | MASK is the set of modifiers present in SYMBOL's name. | |
3164 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3165 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3166 | Qevent_symbol_elements property. */ | |
3167 | static Lisp_Object | |
3168 | parse_modifiers (symbol) | |
3169 | Lisp_Object symbol; | |
3170 | { | |
9b8eb840 | 3171 | Lisp_Object elements; |
0a7f1fc0 | 3172 | |
9b8eb840 | 3173 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3174 | if (CONSP (elements)) |
3175 | return elements; | |
3176 | else | |
3177 | { | |
3178 | int end; | |
3179 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3180 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3181 | Lisp_Object mask; |
3182 | ||
9b8eb840 KH |
3183 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3184 | XSYMBOL (symbol)->name->size - end), | |
3185 | Qnil); | |
3186 | ||
734fef94 JB |
3187 | if (modifiers & ~((1<<VALBITS) - 1)) |
3188 | abort (); | |
0a7f1fc0 JB |
3189 | XFASTINT (mask) = modifiers; |
3190 | elements = Fcons (unmodified, Fcons (mask, Qnil)); | |
3191 | ||
3192 | /* Cache the parsing results on SYMBOL. */ | |
3193 | Fput (symbol, Qevent_symbol_element_mask, | |
3194 | elements); | |
3195 | Fput (symbol, Qevent_symbol_elements, | |
3196 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3197 | ||
3198 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3199 | it would be nice to put that in unmodified's cache. | |
3200 | But we can't, since we're not sure that parse_modifiers is | |
3201 | canonical. */ | |
3202 | ||
3203 | return elements; | |
3204 | } | |
3205 | } | |
3206 | ||
3207 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3208 | BASE must be unmodified. | |
3209 | ||
3210 | This is like apply_modifiers_uncached, but uses BASE's | |
3211 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3212 | Qevent_symbol_elements properties, since it has that info anyway. |
3213 | ||
3214 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3215 | the modified symbol. */ | |
0a7f1fc0 JB |
3216 | static Lisp_Object |
3217 | apply_modifiers (modifiers, base) | |
3218 | int modifiers; | |
3219 | Lisp_Object base; | |
3220 | { | |
7b4aedb9 | 3221 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3222 | |
80645119 JB |
3223 | /* Mask out upper bits. We don't know where this value's been. */ |
3224 | modifiers &= (1<<VALBITS) - 1; | |
3225 | ||
0a7f1fc0 | 3226 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3227 | cache = Fget (base, Qmodifier_cache); |
cd21b839 | 3228 | XFASTINT (index) = (modifiers & ~click_modifier); |
697e4895 | 3229 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3230 | |
3231 | if (CONSP (entry)) | |
7b4aedb9 JB |
3232 | new_symbol = XCONS (entry)->cdr; |
3233 | else | |
3234 | { | |
3235 | /* We have to create the symbol ourselves. */ | |
3236 | new_symbol = apply_modifiers_uncached (modifiers, | |
3237 | XSYMBOL (base)->name->data, | |
3238 | XSYMBOL (base)->name->size); | |
3239 | ||
3240 | /* Add the new symbol to the base's cache. */ | |
3241 | entry = Fcons (index, new_symbol); | |
3242 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3243 | ||
3244 | /* We have the parsing info now for free, so add it to the caches. */ | |
3245 | XFASTINT (index) = modifiers; | |
3246 | Fput (new_symbol, Qevent_symbol_element_mask, | |
3247 | Fcons (base, Fcons (index, Qnil))); | |
3248 | Fput (new_symbol, Qevent_symbol_elements, | |
3249 | Fcons (base, lispy_modifier_list (modifiers))); | |
3250 | } | |
0a7f1fc0 | 3251 | |
7b4aedb9 JB |
3252 | /* Make sure this symbol is of the same kind as BASE. |
3253 | ||
3254 | You'd think we could just set this once and for all when we | |
3255 | intern the symbol above, but reorder_modifiers may call us when | |
3256 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3257 | because it has a Qmodifier_cache property it must have its |
3258 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3259 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3260 | { | |
9b8eb840 | 3261 | Lisp_Object kind; |
7b4aedb9 | 3262 | |
9b8eb840 | 3263 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3264 | if (! NILP (kind)) |
3265 | Fput (new_symbol, Qevent_kind, kind); | |
3266 | } | |
3267 | ||
3268 | return new_symbol; | |
0a7f1fc0 JB |
3269 | } |
3270 | ||
3271 | ||
3272 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3273 | return a symbol with the modifiers placed in the canonical order. | |
3274 | Canonical order is alphabetical, except for down and drag, which | |
3275 | always come last. The 'click' modifier is never written out. | |
3276 | ||
3277 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3278 | and M-C-foo end up being equivalent in the keymap. */ | |
3279 | ||
3280 | Lisp_Object | |
3281 | reorder_modifiers (symbol) | |
3282 | Lisp_Object symbol; | |
3283 | { | |
3284 | /* It's hopefully okay to write the code this way, since everything | |
3285 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3286 | Lisp_Object parsed; |
0a7f1fc0 | 3287 | |
9b8eb840 | 3288 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3289 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3290 | XCONS (parsed)->car); | |
3291 | } | |
3292 | ||
3293 | ||
284f4730 JB |
3294 | /* For handling events, we often want to produce a symbol whose name |
3295 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3296 | to some base, like the name of a function key or mouse button. | |
3297 | modify_event_symbol produces symbols of this sort. | |
3298 | ||
3299 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3300 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3301 | in the table. | |
3302 | ||
80e4aa30 RS |
3303 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3304 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3305 | ||
284f4730 JB |
3306 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3307 | persist between calls to modify_event_symbol that it can use to | |
3308 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3309 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3310 | |
3311 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3312 | ||
3313 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3314 | whose prefixes should be applied to the symbol name. | |
3315 | ||
3316 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3317 | the returned symbol. |
3318 | ||
3319 | The symbols we create are supposed to have an | |
eb8c3be9 | 3320 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3321 | in the symbol's name. */ |
3322 | ||
284f4730 | 3323 | static Lisp_Object |
80e4aa30 RS |
3324 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3325 | name_table, symbol_table, table_size) | |
284f4730 JB |
3326 | int symbol_num; |
3327 | unsigned modifiers; | |
3328 | Lisp_Object symbol_kind; | |
80e4aa30 | 3329 | Lisp_Object name_alist; |
284f4730 JB |
3330 | char **name_table; |
3331 | Lisp_Object *symbol_table; | |
3332 | int table_size; | |
3333 | { | |
80e4aa30 RS |
3334 | Lisp_Object value; |
3335 | Lisp_Object symbol_int; | |
3336 | ||
3337 | XSET (symbol_int, Lisp_Int, symbol_num); | |
284f4730 JB |
3338 | |
3339 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3340 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3341 | return Qnil; |
284f4730 | 3342 | |
80e4aa30 RS |
3343 | if (CONSP (*symbol_table)) |
3344 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3345 | ||
0a7f1fc0 | 3346 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3347 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3348 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3349 | we've never used that symbol before. */ | |
80e4aa30 | 3350 | else |
88cb0656 | 3351 | { |
80e4aa30 RS |
3352 | if (! VECTORP (*symbol_table) |
3353 | || XVECTOR (*symbol_table)->size != table_size) | |
3354 | { | |
3355 | Lisp_Object size; | |
0a7f1fc0 | 3356 | |
80e4aa30 RS |
3357 | XFASTINT (size) = table_size; |
3358 | *symbol_table = Fmake_vector (size, Qnil); | |
3359 | } | |
284f4730 | 3360 | |
80e4aa30 RS |
3361 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3362 | } | |
284f4730 | 3363 | |
0a7f1fc0 | 3364 | /* Have we already used this symbol before? */ |
80e4aa30 | 3365 | if (NILP (value)) |
284f4730 | 3366 | { |
0a7f1fc0 | 3367 | /* No; let's create it. */ |
80e4aa30 | 3368 | if (!NILP (name_alist)) |
b64b4075 | 3369 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3370 | else if (name_table[symbol_num]) |
3371 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3372 | |
3373 | if (NILP (value)) | |
d1f50460 RS |
3374 | { |
3375 | char buf[20]; | |
3376 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3377 | value = intern (buf); |
d1f50460 | 3378 | } |
0a7f1fc0 | 3379 | |
80e4aa30 RS |
3380 | if (CONSP (*symbol_table)) |
3381 | *symbol_table = Fcons (value, *symbol_table); | |
3382 | else | |
3383 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3384 | ||
0a7f1fc0 JB |
3385 | /* Fill in the cache entries for this symbol; this also |
3386 | builds the Qevent_symbol_elements property, which the user | |
3387 | cares about. */ | |
80e4aa30 RS |
3388 | apply_modifiers (modifiers & click_modifier, value); |
3389 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3390 | } |
88cb0656 | 3391 | |
0a7f1fc0 | 3392 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3393 | return apply_modifiers (modifiers, value); |
284f4730 | 3394 | } |
0a7f1fc0 | 3395 | |
284f4730 | 3396 | \f |
284f4730 JB |
3397 | /* Store into *addr a value nonzero if terminal input chars are available. |
3398 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3399 | but works even if FIONREAD does not exist. | |
3400 | (In fact, this may actually read some input.) */ | |
3401 | ||
3402 | static void | |
3403 | get_input_pending (addr) | |
3404 | int *addr; | |
3405 | { | |
3406 | /* First of all, have we already counted some input? */ | |
3407 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3408 | ||
3409 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3410 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3411 | return; | |
3412 | ||
3413 | /* Try to read some input and see how much we get. */ | |
3414 | gobble_input (0); | |
3415 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3416 | } | |
3417 | ||
3418 | /* Interface to read_avail_input, blocking SIGIO if necessary. */ | |
3419 | ||
3420 | int | |
3421 | gobble_input (expected) | |
3422 | int expected; | |
3423 | { | |
3424 | #ifndef VMS | |
3425 | #ifdef SIGIO | |
3426 | if (interrupt_input) | |
3427 | { | |
32676c08 | 3428 | SIGMASKTYPE mask; |
e065a56e | 3429 | mask = sigblockx (SIGIO); |
284f4730 | 3430 | read_avail_input (expected); |
e065a56e | 3431 | sigsetmask (mask); |
284f4730 JB |
3432 | } |
3433 | else | |
3434 | #endif | |
3435 | read_avail_input (expected); | |
3436 | #endif | |
3437 | } | |
a8015ab5 | 3438 | |
241ceaf7 RS |
3439 | /* Put a buffer_switch_event in the buffer |
3440 | so that read_key_sequence will notice the new current buffer. */ | |
3441 | ||
a8015ab5 KH |
3442 | record_asynch_buffer_change () |
3443 | { | |
3444 | struct input_event event; | |
a30f0615 RS |
3445 | Lisp_Object tem; |
3446 | ||
a8015ab5 KH |
3447 | event.kind = buffer_switch_event; |
3448 | event.frame_or_window = Qnil; | |
241ceaf7 | 3449 | |
f65e6f7d | 3450 | #ifdef subprocesses |
a30f0615 RS |
3451 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3452 | The purpose of the event is to make read_key_sequence look up the | |
3453 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3454 | and the event could cause trouble by messing up (input-pending-p). */ | |
3455 | tem = Fwaiting_for_user_input_p (); | |
3456 | if (NILP (tem)) | |
3457 | return; | |
f65e6f7d RS |
3458 | #else |
3459 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3460 | return; | |
3461 | #endif | |
a30f0615 | 3462 | |
241ceaf7 RS |
3463 | /* Make sure no interrupt happens while storing the event. */ |
3464 | #ifdef SIGIO | |
3465 | if (interrupt_input) | |
3466 | { | |
3467 | SIGMASKTYPE mask; | |
3468 | mask = sigblockx (SIGIO); | |
3469 | kbd_buffer_store_event (&event); | |
3470 | sigsetmask (mask); | |
3471 | } | |
3472 | else | |
3473 | #endif | |
3474 | { | |
3475 | stop_polling (); | |
3476 | kbd_buffer_store_event (&event); | |
3477 | start_polling (); | |
3478 | } | |
a8015ab5 | 3479 | } |
284f4730 JB |
3480 | \f |
3481 | #ifndef VMS | |
3482 | ||
3483 | /* Read any terminal input already buffered up by the system | |
3484 | into the kbd_buffer, but do not wait. | |
3485 | ||
3486 | EXPECTED should be nonzero if the caller knows there is some input. | |
3487 | ||
3488 | Except on VMS, all input is read by this function. | |
3489 | If interrupt_input is nonzero, this function MUST be called | |
3490 | only when SIGIO is blocked. | |
3491 | ||
3492 | Returns the number of keyboard chars read, or -1 meaning | |
3493 | this is a bad time to try to read input. */ | |
3494 | ||
3495 | static int | |
3496 | read_avail_input (expected) | |
3497 | int expected; | |
3498 | { | |
3499 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3500 | register int i; | |
3501 | int nread; | |
3502 | ||
3503 | if (read_socket_hook) | |
3504 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
3505 | nread = (*read_socket_hook) (0, buf, KBD_BUFFER_SIZE, expected, expected); | |
3506 | else | |
3507 | { | |
17270835 RS |
3508 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3509 | the kbd_buffer can really hold. That may prevent loss | |
3510 | of characters on some systems when input is stuffed at us. */ | |
3511 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3512 | int n_to_read; |
284f4730 | 3513 | |
58788063 | 3514 | /* Determine how many characters we should *try* to read. */ |
80e4aa30 | 3515 | #ifdef MSDOS |
58788063 RS |
3516 | n_to_read = dos_keysns (); |
3517 | if (n_to_read == 0) | |
3518 | return 0; | |
c3a2738c | 3519 | #else /* not MSDOS */ |
284f4730 JB |
3520 | #ifdef FIONREAD |
3521 | /* Find out how much input is available. */ | |
58788063 | 3522 | if (ioctl (0, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3523 | /* Formerly simply reported no input, but that sometimes led to |
3524 | a failure of Emacs to terminate. | |
3525 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3526 | /* ??? Is it really right to send the signal just to this process |
3527 | rather than to the whole process group? | |
3528 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3529 | kill (getpid (), SIGHUP); |
58788063 | 3530 | if (n_to_read == 0) |
284f4730 | 3531 | return 0; |
58788063 RS |
3532 | if (n_to_read > sizeof cbuf) |
3533 | n_to_read = sizeof cbuf; | |
284f4730 | 3534 | #else /* no FIONREAD */ |
482952ef | 3535 | #if defined(USG) || defined(DGUX) |
284f4730 | 3536 | /* Read some input if available, but don't wait. */ |
58788063 | 3537 | n_to_read = sizeof cbuf; |
284f4730 JB |
3538 | fcntl (fileno (stdin), F_SETFL, O_NDELAY); |
3539 | #else | |
3540 | you lose; | |
3541 | #endif | |
3542 | #endif | |
80e4aa30 | 3543 | #endif /* not MSDOS */ |
284f4730 | 3544 | |
58788063 RS |
3545 | /* Now read; for one reason or another, this will not block. |
3546 | NREAD is set to the number of chars read. */ | |
9134775b | 3547 | do |
284f4730 | 3548 | { |
80e4aa30 RS |
3549 | #ifdef MSDOS |
3550 | cbuf[0] = dos_keyread(); | |
3551 | nread = 1; | |
3552 | #else | |
58788063 | 3553 | nread = read (fileno (stdin), cbuf, n_to_read); |
80e4aa30 | 3554 | #endif |
762f2b92 | 3555 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3556 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3557 | This looks incorrect, but it isn't, because _BSD causes | |
3558 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3559 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3560 | if (nread == 0) |
80e4aa30 | 3561 | kill (0, SIGHUP); |
284f4730 | 3562 | #endif |
9134775b | 3563 | } |
791587ee KH |
3564 | while ( |
3565 | /* We used to retry the read if it was interrupted. | |
3566 | But this does the wrong thing when O_NDELAY causes | |
3567 | an EAGAIN error. Does anybody know of a situation | |
3568 | where a retry is actually needed? */ | |
3569 | #if 0 | |
3570 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3571 | #ifdef EFAULT |
9134775b | 3572 | || errno == EFAULT |
80e4aa30 | 3573 | #endif |
284f4730 | 3574 | #ifdef EBADSLT |
9134775b | 3575 | || errno == EBADSLT |
284f4730 | 3576 | #endif |
791587ee KH |
3577 | ) |
3578 | #else | |
3579 | 0 | |
3580 | #endif | |
3581 | ); | |
284f4730 JB |
3582 | |
3583 | #ifndef FIONREAD | |
02c2c53f | 3584 | #if defined (USG) || defined (DGUX) |
284f4730 | 3585 | fcntl (fileno (stdin), F_SETFL, 0); |
02c2c53f | 3586 | #endif /* USG or DGUX */ |
284f4730 JB |
3587 | #endif /* no FIONREAD */ |
3588 | for (i = 0; i < nread; i++) | |
3589 | { | |
3590 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3591 | buf[i].modifiers = 0; |
b04904fb | 3592 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3593 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3594 | if (meta_key != 2) |
3595 | cbuf[i] &= ~0x80; | |
86e5706b | 3596 | |
7b4aedb9 JB |
3597 | XSET (buf[i].code, Lisp_Int, cbuf[i]); |
3598 | #ifdef MULTI_FRAME | |
3599 | XSET (buf[i].frame_or_window, Lisp_Frame, selected_frame); | |
3600 | #else | |
3601 | buf[i].frame_or_window = Qnil; | |
3602 | #endif | |
284f4730 JB |
3603 | } |
3604 | } | |
3605 | ||
3606 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3607 | for (i = 0; i < nread; i++) | |
3608 | { | |
3609 | kbd_buffer_store_event (&buf[i]); | |
3610 | /* Don't look at input that follows a C-g too closely. | |
3611 | This reduces lossage due to autorepeat on C-g. */ | |
3612 | if (buf[i].kind == ascii_keystroke | |
3613 | && XINT(buf[i].code) == quit_char) | |
3614 | break; | |
3615 | } | |
3616 | ||
3617 | return nread; | |
3618 | } | |
3619 | #endif /* not VMS */ | |
3620 | \f | |
3621 | #ifdef SIGIO /* for entire page */ | |
3622 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3623 | ||
2ce30ea2 | 3624 | SIGTYPE |
284f4730 JB |
3625 | input_available_signal (signo) |
3626 | int signo; | |
3627 | { | |
3628 | /* Must preserve main program's value of errno. */ | |
3629 | int old_errno = errno; | |
3630 | #ifdef BSD4_1 | |
3631 | extern int select_alarmed; | |
3632 | #endif | |
3633 | ||
3634 | #ifdef USG | |
3635 | /* USG systems forget handlers when they are used; | |
3636 | must reestablish each time */ | |
3637 | signal (signo, input_available_signal); | |
3638 | #endif /* USG */ | |
3639 | ||
3640 | #ifdef BSD4_1 | |
3641 | sigisheld (SIGIO); | |
3642 | #endif | |
3643 | ||
ffd56f97 JB |
3644 | if (input_available_clear_time) |
3645 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3646 | |
3647 | while (1) | |
3648 | { | |
3649 | int nread; | |
3650 | nread = read_avail_input (1); | |
3651 | /* -1 means it's not ok to read the input now. | |
3652 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3653 | 0 means there was no keyboard input available. */ | |
3654 | if (nread <= 0) | |
3655 | break; | |
3656 | ||
3657 | #ifdef BSD4_1 | |
3658 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3659 | #endif | |
3660 | } | |
3661 | ||
3662 | #ifdef BSD4_1 | |
3663 | sigfree (); | |
3664 | #endif | |
3665 | errno = old_errno; | |
3666 | } | |
3667 | #endif /* SIGIO */ | |
ad163903 JB |
3668 | |
3669 | /* Send ourselves a SIGIO. | |
3670 | ||
3671 | This function exists so that the UNBLOCK_INPUT macro in | |
3672 | blockinput.h can have some way to take care of input we put off | |
3673 | dealing with, without assuming that every file which uses | |
3674 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3675 | void | |
3676 | reinvoke_input_signal () | |
3677 | { | |
3678 | #ifdef SIGIO | |
3679 | kill (0, SIGIO); | |
3680 | #endif | |
3681 | } | |
3682 | ||
3683 | ||
284f4730 JB |
3684 | \f |
3685 | /* Return the prompt-string of a sparse keymap. | |
3686 | This is the first element which is a string. | |
3687 | Return nil if there is none. */ | |
3688 | ||
3689 | Lisp_Object | |
3690 | map_prompt (map) | |
3691 | Lisp_Object map; | |
3692 | { | |
3693 | while (CONSP (map)) | |
3694 | { | |
3695 | register Lisp_Object tem; | |
3696 | tem = Fcar (map); | |
3697 | if (XTYPE (tem) == Lisp_String) | |
3698 | return tem; | |
3699 | map = Fcdr (map); | |
3700 | } | |
3701 | return Qnil; | |
3702 | } | |
3703 | ||
b7c49376 RS |
3704 | static void menu_bar_item (); |
3705 | static void menu_bar_one_keymap (); | |
3706 | ||
3707 | /* These variables hold the vector under construction within | |
3708 | menu_bar_items and its subroutines, and the current index | |
3709 | for storing into that vector. */ | |
3710 | static Lisp_Object menu_bar_items_vector; | |
3711 | static Lisp_Object menu_bar_items_index; | |
5ec75a55 | 3712 | |
b7c49376 RS |
3713 | /* Return a vector of menu items for a menu bar, appropriate |
3714 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 3715 | KEY STRING MAPLIST. |
b7c49376 RS |
3716 | |
3717 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
3718 | |
3719 | Lisp_Object | |
b7c49376 RS |
3720 | menu_bar_items (old) |
3721 | Lisp_Object old; | |
5ec75a55 RS |
3722 | { |
3723 | /* The number of keymaps we're scanning right now, and the number of | |
3724 | keymaps we have allocated space for. */ | |
3725 | int nmaps; | |
3726 | ||
3727 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3728 | in the current keymaps, or nil where it is not a prefix. */ | |
3729 | Lisp_Object *maps; | |
3730 | ||
9f9c0e27 | 3731 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3732 | |
3733 | Lisp_Object result; | |
3734 | ||
3735 | int mapno; | |
47d319aa | 3736 | Lisp_Object oquit; |
5ec75a55 | 3737 | |
b7c49376 RS |
3738 | int i; |
3739 | ||
3740 | struct gcpro gcpro1; | |
3741 | ||
db60d856 JB |
3742 | /* In order to build the menus, we need to call the keymap |
3743 | accessors. They all call QUIT. But this function is called | |
3744 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3745 | quitting while building the menus. |
3746 | We do this instead of specbind because (1) errors will clear it anyway | |
3747 | and (2) this avoids risk of specpdl overflow. */ | |
3748 | oquit = Vinhibit_quit; | |
3749 | Vinhibit_quit = Qt; | |
db60d856 | 3750 | |
b7c49376 RS |
3751 | if (!NILP (old)) |
3752 | menu_bar_items_vector = old; | |
3753 | else | |
3754 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
3755 | menu_bar_items_index = 0; | |
3756 | ||
3757 | GCPRO1 (menu_bar_items_vector); | |
3758 | ||
5ec75a55 RS |
3759 | /* Build our list of keymaps. |
3760 | If we recognize a function key and replace its escape sequence in | |
3761 | keybuf with its symbol, or if the sequence starts with a mouse | |
3762 | click and we need to switch buffers, we jump back here to rebuild | |
3763 | the initial keymaps from the current buffer. */ | |
3764 | { | |
3765 | Lisp_Object *tmaps; | |
3766 | ||
9dd3131c RS |
3767 | if (!NILP (Voverriding_local_map)) |
3768 | { | |
3769 | nmaps = 2; | |
3770 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3771 | maps[0] = Voverriding_local_map; | |
3772 | } | |
3773 | else | |
3774 | { | |
3775 | nmaps = current_minor_maps (0, &tmaps) + 2; | |
3776 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3777 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 3778 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 3779 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 3780 | #else |
9dd3131c | 3781 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3782 | #endif |
9dd3131c | 3783 | } |
7e6992e0 | 3784 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3785 | } |
3786 | ||
3787 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3788 | ||
3789 | result = Qnil; | |
3790 | ||
e58aa385 | 3791 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3792 | { |
3793 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3794 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3795 | else |
3796 | def = Qnil; | |
3797 | ||
3798 | tem = Fkeymapp (def); | |
3799 | if (!NILP (tem)) | |
b7c49376 | 3800 | menu_bar_one_keymap (def); |
5ec75a55 RS |
3801 | } |
3802 | ||
b7c49376 RS |
3803 | /* Move to the end those items that should be at the end. */ |
3804 | ||
9f9c0e27 RS |
3805 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
3806 | { | |
b7c49376 RS |
3807 | int i; |
3808 | int end = menu_bar_items_index; | |
3809 | ||
3810 | for (i = 0; i < end; i += 3) | |
3811 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3812 | { | |
0301268e RS |
3813 | Lisp_Object tem0, tem1, tem2; |
3814 | /* Move the item at index I to the end, | |
3815 | shifting all the others forward. */ | |
3816 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
3817 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
3818 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3819 | if (end > i + 3) | |
3820 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3821 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3822 | (end - i - 3) * sizeof (Lisp_Object)); | |
3823 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
3824 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
3825 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
3826 | break; | |
b7c49376 RS |
3827 | } |
3828 | } | |
9f9c0e27 | 3829 | |
b7c49376 RS |
3830 | /* Add nil, nil, nil at the end. */ |
3831 | i = menu_bar_items_index; | |
3832 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3833 | { | |
3834 | Lisp_Object tem; | |
3835 | int newsize = 2 * i; | |
3836 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3837 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3838 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3839 | menu_bar_items_vector = tem; | |
9f9c0e27 | 3840 | } |
b7c49376 RS |
3841 | /* Add this item. */ |
3842 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3843 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3844 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3845 | menu_bar_items_index = i; | |
a73c5e29 | 3846 | |
47d319aa | 3847 | Vinhibit_quit = oquit; |
b7c49376 RS |
3848 | UNGCPRO; |
3849 | return menu_bar_items_vector; | |
5ec75a55 RS |
3850 | } |
3851 | \f | |
3852 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 3853 | in menu_bar_items_vector. */ |
5ec75a55 | 3854 | |
b7c49376 RS |
3855 | static void |
3856 | menu_bar_one_keymap (keymap) | |
3857 | Lisp_Object keymap; | |
5ec75a55 RS |
3858 | { |
3859 | Lisp_Object tail, item, key, binding, item_string, table; | |
3860 | ||
3861 | /* Loop over all keymap entries that have menu strings. */ | |
3862 | for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr) | |
3863 | { | |
3864 | item = XCONS (tail)->car; | |
3865 | if (XTYPE (item) == Lisp_Cons) | |
3866 | { | |
3867 | key = XCONS (item)->car; | |
3868 | binding = XCONS (item)->cdr; | |
3869 | if (XTYPE (binding) == Lisp_Cons) | |
3870 | { | |
3871 | item_string = XCONS (binding)->car; | |
3872 | if (XTYPE (item_string) == Lisp_String) | |
b7c49376 | 3873 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3874 | } |
e58aa385 | 3875 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3876 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
3877 | } |
3878 | else if (XTYPE (item) == Lisp_Vector) | |
3879 | { | |
3880 | /* Loop over the char values represented in the vector. */ | |
3881 | int len = XVECTOR (item)->size; | |
3882 | int c; | |
3883 | for (c = 0; c < len; c++) | |
3884 | { | |
3885 | Lisp_Object character; | |
3886 | XFASTINT (character) = c; | |
3887 | binding = XVECTOR (item)->contents[c]; | |
3888 | if (XTYPE (binding) == Lisp_Cons) | |
3889 | { | |
3890 | item_string = XCONS (binding)->car; | |
3891 | if (XTYPE (item_string) == Lisp_String) | |
b7c49376 | 3892 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3893 | } |
e58aa385 | 3894 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3895 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
3896 | } |
3897 | } | |
3898 | } | |
5ec75a55 RS |
3899 | } |
3900 | ||
047a8ea7 RS |
3901 | /* This is used as the handler when calling internal_condition_case_1. */ |
3902 | ||
3903 | static Lisp_Object | |
3904 | menu_bar_item_1 (arg) | |
3905 | Lisp_Object arg; | |
3906 | { | |
3907 | return Qnil; | |
3908 | } | |
3909 | ||
f5e09c8b RS |
3910 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
3911 | If there's already an item for KEY, add this DEF to it. */ | |
3912 | ||
b7c49376 RS |
3913 | static void |
3914 | menu_bar_item (key, item_string, def) | |
3915 | Lisp_Object key, item_string, def; | |
5ec75a55 | 3916 | { |
e58aa385 | 3917 | Lisp_Object tem; |
5ec75a55 | 3918 | Lisp_Object enabled; |
b7c49376 | 3919 | int i; |
5ec75a55 | 3920 | |
e58aa385 RS |
3921 | if (EQ (def, Qundefined)) |
3922 | { | |
f5e09c8b | 3923 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 3924 | discard any previously made menu bar item. */ |
b7c49376 RS |
3925 | |
3926 | for (i = 0; i < menu_bar_items_index; i += 3) | |
3927 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3928 | { | |
3929 | if (menu_bar_items_index > i + 3) | |
3930 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3931 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3932 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
3933 | menu_bar_items_index -= 3; | |
3934 | return; | |
3935 | } | |
8aa034e1 RS |
3936 | |
3937 | /* If there's no definition for this key yet, | |
3938 | just ignore `undefined'. */ | |
3939 | return; | |
e58aa385 RS |
3940 | } |
3941 | ||
5ec75a55 RS |
3942 | /* See if this entry is enabled. */ |
3943 | enabled = Qt; | |
3944 | ||
3945 | if (XTYPE (def) == Lisp_Symbol) | |
3946 | { | |
3947 | /* No property, or nil, means enable. | |
3948 | Otherwise, enable if value is not nil. */ | |
3949 | tem = Fget (def, Qmenu_enable); | |
3950 | if (!NILP (tem)) | |
047a8ea7 RS |
3951 | /* (condition-case nil (eval tem) |
3952 | (error nil)) */ | |
3953 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
3954 | menu_bar_item_1); | |
5ec75a55 RS |
3955 | } |
3956 | ||
b7c49376 RS |
3957 | /* Ignore this item if it's not enabled. */ |
3958 | if (NILP (enabled)) | |
3959 | return; | |
5ec75a55 | 3960 | |
f5e09c8b | 3961 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
3962 | for (i = 0; i < menu_bar_items_index; i += 3) |
3963 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3964 | break; | |
3965 | ||
f5e09c8b | 3966 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
3967 | if (i == menu_bar_items_index) |
3968 | { | |
3969 | /* If vector is too small, get a bigger one. */ | |
3970 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3971 | { | |
3972 | Lisp_Object tem; | |
3973 | int newsize = 2 * i; | |
3974 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3975 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3976 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3977 | menu_bar_items_vector = tem; | |
3978 | } | |
3979 | /* Add this item. */ | |
3980 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
3981 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 3982 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
3983 | menu_bar_items_index = i; |
3984 | } | |
f5e09c8b RS |
3985 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
3986 | else | |
3987 | { | |
3988 | Lisp_Object old; | |
3989 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3990 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
3991 | } | |
5ec75a55 RS |
3992 | } |
3993 | \f | |
dcc408a0 RS |
3994 | /* Read a character using menus based on maps in the array MAPS. |
3995 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
3996 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
3997 | |
3998 | PREV_EVENT is the previous input event, or nil if we are reading | |
3999 | the first event of a key sequence. | |
4000 | ||
6569cc8d JB |
4001 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4002 | if we used a mouse menu to read the input, or zero otherwise. If | |
4003 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4004 | |
4005 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4006 | and the strings associated with various map elements. |
4007 | ||
4008 | This can be done with X menus or with menus put in the minibuf. | |
4009 | These are done in different ways, depending on how the input will be read. | |
4010 | Menus using X are done after auto-saving in read-char, getting the input | |
4011 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4012 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4013 | |
7617111f | 4014 | static Lisp_Object |
8150596a | 4015 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4016 | int nmaps; |
4017 | Lisp_Object *maps; | |
4018 | Lisp_Object prev_event; | |
4019 | int *used_mouse_menu; | |
284f4730 | 4020 | { |
7d6de002 RS |
4021 | int mapno; |
4022 | register Lisp_Object name; | |
7d6de002 RS |
4023 | Lisp_Object rest, vector; |
4024 | ||
6569cc8d JB |
4025 | if (used_mouse_menu) |
4026 | *used_mouse_menu = 0; | |
284f4730 JB |
4027 | |
4028 | /* Use local over global Menu maps */ | |
4029 | ||
7d6de002 RS |
4030 | if (! menu_prompting) |
4031 | return Qnil; | |
4032 | ||
4033 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4034 | for (mapno = 0; mapno < nmaps; mapno++) | |
4035 | { | |
4036 | name = map_prompt (maps[mapno]); | |
4037 | if (!NILP (name)) | |
4038 | break; | |
4039 | } | |
284f4730 | 4040 | |
7d6de002 | 4041 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4042 | if (mapno >= nmaps) |
7d6de002 RS |
4043 | return Qnil; |
4044 | ||
dbc4e1c1 JB |
4045 | #ifdef HAVE_X_WINDOWS |
4046 | #ifdef HAVE_X_MENU | |
7d6de002 RS |
4047 | /* If we got to this point via a mouse click, |
4048 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4049 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4050 | { |
4051 | /* Display the menu and get the selection. */ | |
4052 | Lisp_Object *realmaps | |
4053 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4054 | Lisp_Object value; | |
4055 | int nmaps1 = 0; | |
4056 | ||
4057 | /* Use the maps that are not nil. */ | |
4058 | for (mapno = 0; mapno < nmaps; mapno++) | |
4059 | if (!NILP (maps[mapno])) | |
4060 | realmaps[nmaps1++] = maps[mapno]; | |
4061 | ||
4062 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4063 | if (CONSP (value)) |
4064 | { | |
4065 | /* If we got more than one event, put all but the first | |
4066 | onto this list to be read later. | |
4067 | Return just the first event now. */ | |
24597608 RS |
4068 | Vunread_command_events |
4069 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4070 | value = XCONS (value)->car; |
4071 | } | |
1c90c381 | 4072 | else if (NILP (value)) |
dcc408a0 | 4073 | value = Qt; |
6569cc8d JB |
4074 | if (used_mouse_menu) |
4075 | *used_mouse_menu = 1; | |
7d6de002 RS |
4076 | return value; |
4077 | } | |
dbc4e1c1 JB |
4078 | #endif /* HAVE_X_MENU */ |
4079 | #endif /* HAVE_X_WINDOWS */ | |
8150596a RS |
4080 | return Qnil ; |
4081 | } | |
4082 | ||
4083 | static Lisp_Object | |
24597608 | 4084 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4085 | int commandflag ; |
4086 | int nmaps; | |
4087 | Lisp_Object *maps; | |
4088 | { | |
4089 | int mapno; | |
4090 | register Lisp_Object name; | |
4091 | int nlength; | |
4092 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4093 | char *menu = (char *) alloca (width + 4); | |
4094 | int idx = -1; | |
9fdbfdf8 | 4095 | int nobindings = 1; |
8150596a RS |
4096 | Lisp_Object rest, vector; |
4097 | ||
4098 | if (! menu_prompting) | |
4099 | return Qnil; | |
4100 | ||
4101 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4102 | for (mapno = 0; mapno < nmaps; mapno++) | |
4103 | { | |
4104 | name = map_prompt (maps[mapno]); | |
4105 | if (!NILP (name)) | |
4106 | break; | |
4107 | } | |
4108 | ||
4109 | /* If we don't have any menus, just read a character normally. */ | |
4110 | if (mapno >= nmaps) | |
4111 | return Qnil; | |
284f4730 JB |
4112 | |
4113 | /* Prompt string always starts with map's prompt, and a space. */ | |
4114 | strcpy (menu, XSTRING (name)->data); | |
4115 | nlength = XSTRING (name)->size; | |
7d6de002 | 4116 | menu[nlength++] = ':'; |
284f4730 JB |
4117 | menu[nlength++] = ' '; |
4118 | menu[nlength] = 0; | |
4119 | ||
7d6de002 RS |
4120 | /* Start prompting at start of first map. */ |
4121 | mapno = 0; | |
4122 | rest = maps[mapno]; | |
284f4730 JB |
4123 | |
4124 | /* Present the documented bindings, a line at a time. */ | |
4125 | while (1) | |
4126 | { | |
4127 | int notfirst = 0; | |
4128 | int i = nlength; | |
4129 | Lisp_Object obj; | |
4130 | int ch; | |
8150596a | 4131 | int orig_defn_macro ; |
284f4730 | 4132 | |
284f4730 | 4133 | /* Loop over elements of map. */ |
7d6de002 | 4134 | while (i < width) |
284f4730 | 4135 | { |
7d6de002 | 4136 | Lisp_Object s, elt; |
284f4730 | 4137 | |
7d6de002 RS |
4138 | /* If reached end of map, start at beginning of next map. */ |
4139 | if (NILP (rest)) | |
4140 | { | |
4141 | mapno++; | |
4142 | /* At end of last map, wrap around to first map if just starting, | |
4143 | or end this line if already have something on it. */ | |
4144 | if (mapno == nmaps) | |
284f4730 | 4145 | { |
8150596a | 4146 | mapno = 0; |
40932d1a | 4147 | if (notfirst || nobindings) break; |
284f4730 | 4148 | } |
7d6de002 | 4149 | rest = maps[mapno]; |
284f4730 | 4150 | } |
7d6de002 RS |
4151 | |
4152 | /* Look at the next element of the map. */ | |
4153 | if (idx >= 0) | |
4154 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4155 | else |
7d6de002 RS |
4156 | elt = Fcar_safe (rest); |
4157 | ||
4158 | if (idx < 0 && XTYPE (elt) == Lisp_Vector) | |
284f4730 | 4159 | { |
7d6de002 RS |
4160 | /* If we found a dense table in the keymap, |
4161 | advanced past it, but start scanning its contents. */ | |
4162 | rest = Fcdr_safe (rest); | |
4163 | vector = elt; | |
4164 | idx = 0; | |
284f4730 | 4165 | } |
7d6de002 RS |
4166 | else |
4167 | { | |
4168 | /* An ordinary element. */ | |
8150596a RS |
4169 | if ( idx < 0 ) |
4170 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4171 | else | |
4172 | s = Fcar_safe(elt); /* vector */ | |
7d6de002 RS |
4173 | if (XTYPE (s) != Lisp_String) |
4174 | /* Ignore the element if it has no prompt string. */ | |
4175 | ; | |
4176 | /* If we have room for the prompt string, add it to this line. | |
4177 | If this is the first on the line, always add it. */ | |
8150596a | 4178 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4179 | || !notfirst) |
4180 | { | |
4181 | int thiswidth; | |
284f4730 | 4182 | |
7d6de002 RS |
4183 | /* Punctuate between strings. */ |
4184 | if (notfirst) | |
4185 | { | |
4186 | strcpy (menu + i, ", "); | |
4187 | i += 2; | |
4188 | } | |
4189 | notfirst = 1; | |
8150596a | 4190 | nobindings = 0 ; |
7d6de002 RS |
4191 | |
4192 | /* Add as much of string as fits. */ | |
4193 | thiswidth = XSTRING (s)->size; | |
4194 | if (thiswidth + i > width) | |
4195 | thiswidth = width - i; | |
4196 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4197 | i += thiswidth; | |
8150596a | 4198 | menu[i] = 0; |
7d6de002 RS |
4199 | } |
4200 | else | |
4201 | { | |
4202 | /* If this element does not fit, end the line now, | |
4203 | and save the element for the next line. */ | |
4204 | strcpy (menu + i, "..."); | |
4205 | break; | |
4206 | } | |
4207 | ||
4208 | /* Move past this element. */ | |
8150596a | 4209 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4210 | /* Handle reaching end of dense table. */ |
4211 | idx = -1; | |
4212 | if (idx >= 0) | |
4213 | idx++; | |
4214 | else | |
4215 | rest = Fcdr_safe (rest); | |
4216 | } | |
284f4730 JB |
4217 | } |
4218 | ||
4219 | /* Prompt with that and read response. */ | |
4220 | message1 (menu); | |
8150596a RS |
4221 | |
4222 | /* Make believe its not a keyboard macro in case the help char | |
4223 | is pressed. Help characters are not recorded because menu prompting | |
4224 | is not used on replay. | |
4225 | */ | |
4226 | orig_defn_macro = defining_kbd_macro ; | |
4227 | defining_kbd_macro = 0 ; | |
3cb81011 KH |
4228 | do |
4229 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
4230 | while (XTYPE (obj) == Lisp_Buffer); | |
8150596a | 4231 | defining_kbd_macro = orig_defn_macro ; |
284f4730 JB |
4232 | |
4233 | if (XTYPE (obj) != Lisp_Int) | |
4234 | return obj; | |
4235 | else | |
4236 | ch = XINT (obj); | |
4237 | ||
f4255cd1 | 4238 | if (! EQ (obj, menu_prompt_more_char) |
284f4730 | 4239 | && (XTYPE (menu_prompt_more_char) != Lisp_Int |
f4255cd1 | 4240 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a RS |
4241 | { |
4242 | if ( defining_kbd_macro ) | |
4243 | store_kbd_macro_char(obj) ; | |
4244 | return obj; | |
4245 | } | |
4246 | /* Help char - go round again */ | |
284f4730 JB |
4247 | } |
4248 | } | |
284f4730 JB |
4249 | \f |
4250 | /* Reading key sequences. */ | |
4251 | ||
4252 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4253 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4254 | keymap, or nil otherwise. Return the index of the first keymap in | |
4255 | which KEY has any binding, or NMAPS if no map has a binding. | |
4256 | ||
4257 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4258 | followed by the corresponding non-meta character. Keymaps in | |
4259 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4260 | NEXT. | |
4261 | ||
88cb0656 JB |
4262 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4263 | unmodified. | |
4264 | ||
284f4730 JB |
4265 | NEXT may == CURRENT. */ |
4266 | ||
4267 | static int | |
4e50f26a | 4268 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4269 | Lisp_Object key; |
4270 | Lisp_Object *current, *defs, *next; | |
4271 | int nmaps; | |
4272 | { | |
4273 | int i, first_binding; | |
4274 | ||
4275 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4276 | followed by the corresponding non-meta character. */ | |
86e5706b | 4277 | if (XTYPE (key) == Lisp_Int && (XINT (key) & CHAR_META)) |
284f4730 JB |
4278 | { |
4279 | for (i = 0; i < nmaps; i++) | |
4280 | if (! NILP (current[i])) | |
4281 | { | |
cd21b839 | 4282 | next[i] = |
e74fbc70 | 4283 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4284 | |
4285 | /* Note that since we pass the resulting bindings through | |
4286 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4287 | disappear. */ | |
f4255cd1 | 4288 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4289 | } |
4290 | else | |
4291 | next[i] = Qnil; | |
4292 | ||
4293 | current = next; | |
86e5706b | 4294 | XSET (key, Lisp_Int, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4295 | } |
4296 | ||
4297 | first_binding = nmaps; | |
4298 | for (i = nmaps - 1; i >= 0; i--) | |
4299 | { | |
4300 | if (! NILP (current[i])) | |
4301 | { | |
e74fbc70 | 4302 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4303 | if (! NILP (defs[i])) |
4304 | first_binding = i; | |
4305 | } | |
4306 | else | |
4307 | defs[i] = Qnil; | |
4308 | } | |
4309 | ||
284f4730 | 4310 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4311 | if (first_binding < nmaps) |
4312 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4313 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4314 | |
4315 | return first_binding; | |
4316 | } | |
4317 | ||
f4255cd1 JB |
4318 | /* Read a sequence of keys that ends with a non prefix character, |
4319 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4320 | Prompt with PROMPT. | |
284f4730 | 4321 | Return the length of the key sequence stored. |
dcc408a0 | 4322 | Return -1 if the user rejected a command menu. |
284f4730 | 4323 | |
f4255cd1 JB |
4324 | Echo starting immediately unless `prompt' is 0. |
4325 | ||
4326 | Where a key sequence ends depends on the currently active keymaps. | |
4327 | These include any minor mode keymaps active in the current buffer, | |
4328 | the current buffer's local map, and the global map. | |
4329 | ||
4330 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4331 | to see if some trailing subsequence might be the beginning of a | |
4332 | function key's sequence. If so, we try to read the whole function | |
4333 | key, and substitute its symbolic name into the key sequence. | |
4334 | ||
fbcd35bd JB |
4335 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4336 | `double-' events into similar click events, if that would make them | |
4337 | bound. We try to turn `triple-' events first into `double-' events, | |
4338 | then into clicks. | |
f4255cd1 JB |
4339 | |
4340 | If we get a mouse click in a mode line, vertical divider, or other | |
4341 | non-text area, we treat the click as if it were prefixed by the | |
4342 | symbol denoting that area - `mode-line', `vertical-line', or | |
4343 | whatever. | |
4344 | ||
4345 | If the sequence starts with a mouse click, we read the key sequence | |
4346 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4347 | |
f4255cd1 JB |
4348 | If the user switches frames in the midst of a key sequence, we put |
4349 | off the switch-frame event until later; the next call to | |
4350 | read_char will return it. */ | |
48e416d4 | 4351 | |
284f4730 JB |
4352 | static int |
4353 | read_key_sequence (keybuf, bufsize, prompt) | |
4354 | Lisp_Object *keybuf; | |
4355 | int bufsize; | |
84d91fda | 4356 | Lisp_Object prompt; |
284f4730 | 4357 | { |
f4255cd1 JB |
4358 | int count = specpdl_ptr - specpdl; |
4359 | ||
284f4730 JB |
4360 | /* How many keys there are in the current key sequence. */ |
4361 | int t; | |
4362 | ||
284f4730 JB |
4363 | /* The length of the echo buffer when we started reading, and |
4364 | the length of this_command_keys when we started reading. */ | |
4365 | int echo_start; | |
f4255cd1 | 4366 | int keys_start; |
284f4730 JB |
4367 | |
4368 | /* The number of keymaps we're scanning right now, and the number of | |
4369 | keymaps we have allocated space for. */ | |
4370 | int nmaps; | |
4371 | int nmaps_allocated = 0; | |
4372 | ||
284f4730 JB |
4373 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4374 | the current keymaps. */ | |
4375 | Lisp_Object *defs; | |
4376 | ||
f4255cd1 JB |
4377 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4378 | in the current keymaps, or nil where it is not a prefix. */ | |
4379 | Lisp_Object *submaps; | |
4380 | ||
4381 | /* The index in defs[] of the first keymap that has a binding for | |
4382 | this key sequence. In other words, the lowest i such that | |
4383 | defs[i] is non-nil. */ | |
284f4730 JB |
4384 | int first_binding; |
4385 | ||
f4255cd1 | 4386 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4387 | input key. |
4388 | ||
4389 | We use this to recover after recognizing a function key. Once we | |
4390 | realize that a suffix of the current key sequence is actually a | |
4391 | function key's escape sequence, we replace the suffix with the | |
4392 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4393 | contains a new and different key sequence, so the echo area, |
4394 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4395 | this situation, we set mock_input to t, set t to 0, and jump to | |
4396 | restart_sequence; the loop will read keys from keybuf up until | |
4397 | mock_input, thus rebuilding the state; and then it will resume | |
4398 | reading characters from the keyboard. */ | |
284f4730 JB |
4399 | int mock_input = 0; |
4400 | ||
253598e4 | 4401 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4402 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4403 | and fkey_map is its binding. | |
253598e4 | 4404 | |
f4255cd1 JB |
4405 | These might be > t, indicating that all function key scanning |
4406 | should hold off until t reaches them. We do this when we've just | |
4407 | recognized a function key, to avoid searching for the function | |
4408 | key's again in Vfunction_key_map. */ | |
284f4730 | 4409 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4410 | Lisp_Object fkey_map; |
284f4730 | 4411 | |
a612e298 RS |
4412 | /* Likewise, for key_translation_map. */ |
4413 | int keytran_start = 0, keytran_end = 0; | |
4414 | Lisp_Object keytran_map; | |
4415 | ||
cd21b839 JB |
4416 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4417 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4418 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4419 | |
51763820 BF |
4420 | /* See the comment below... */ |
4421 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4422 | Lisp_Object first_event; |
51763820 | 4423 | #endif |
4efda7dd | 4424 | |
3b9189f8 RS |
4425 | struct buffer *starting_buffer; |
4426 | ||
e9bf89a0 RS |
4427 | /* Nonzero if we seem to have got the beginning of a binding |
4428 | in function_key_map. */ | |
4429 | int function_key_possible = 0; | |
4430 | ||
4efda7dd RS |
4431 | int junk; |
4432 | ||
4433 | last_nonmenu_event = Qnil; | |
4434 | ||
4435 | delayed_switch_frame = Qnil; | |
4436 | fkey_map = Vfunction_key_map; | |
a612e298 | 4437 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4438 | |
a612e298 | 4439 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4440 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4441 | fkey_start = fkey_end = bufsize + 1; | |
4442 | ||
a612e298 RS |
4443 | /* If there is no key-translation-map, turn off scanning. */ |
4444 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4445 | keytran_start = keytran_end = bufsize + 1; | |
4446 | ||
284f4730 JB |
4447 | if (INTERACTIVE) |
4448 | { | |
84d91fda RS |
4449 | if (!NILP (prompt)) |
4450 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4451 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4452 | /* This doesn't put in a dash if the echo buffer is empty, so |
4453 | you don't always see a dash hanging out in the minibuffer. */ | |
4454 | echo_dash (); | |
284f4730 JB |
4455 | } |
4456 | ||
f4255cd1 JB |
4457 | /* Record the initial state of the echo area and this_command_keys; |
4458 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4459 | if (INTERACTIVE) |
f4255cd1 JB |
4460 | echo_start = echo_length (); |
4461 | keys_start = this_command_key_count; | |
0a7f1fc0 | 4462 | |
51763820 BF |
4463 | #if defined (GOBBLE_FIRST_EVENT) |
4464 | /* This doesn't quite work, because some of the things that read_char | |
4465 | does cannot safely be bypassed. It seems too risky to try to make | |
4466 | this work right. */ | |
4467 | ||
4efda7dd RS |
4468 | /* Read the first char of the sequence specially, before setting |
4469 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4470 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4471 | &junk); |
51763820 | 4472 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4473 | |
7b4aedb9 JB |
4474 | /* We jump here when the key sequence has been thoroughly changed, and |
4475 | we need to rescan it starting from the beginning. When we jump here, | |
4476 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4477 | replay_sequence: |
7b4aedb9 | 4478 | |
3b9189f8 | 4479 | starting_buffer = current_buffer; |
e9bf89a0 | 4480 | function_key_possible = 0; |
3b9189f8 | 4481 | |
f4255cd1 | 4482 | /* Build our list of keymaps. |
07d2b8de JB |
4483 | If we recognize a function key and replace its escape sequence in |
4484 | keybuf with its symbol, or if the sequence starts with a mouse | |
4485 | click and we need to switch buffers, we jump back here to rebuild | |
4486 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4487 | { |
4488 | Lisp_Object *maps; | |
4489 | ||
9dd3131c | 4490 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4491 | { |
9dd3131c RS |
4492 | nmaps = 2; |
4493 | if (nmaps > nmaps_allocated) | |
4494 | { | |
4495 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4496 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4497 | nmaps_allocated = nmaps; | |
4498 | } | |
4499 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4500 | } |
9dd3131c RS |
4501 | else |
4502 | { | |
4503 | nmaps = current_minor_maps (0, &maps) + 2; | |
4504 | if (nmaps > nmaps_allocated) | |
4505 | { | |
4506 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4507 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4508 | nmaps_allocated = nmaps; | |
4509 | } | |
4510 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4511 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4512 | submaps[nmaps-2] = get_local_map (PT, current_buffer); |
497ba7a1 | 4513 | #else |
9dd3131c | 4514 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4515 | #endif |
9dd3131c | 4516 | } |
7e6992e0 | 4517 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4518 | } |
4519 | ||
4520 | /* Find an accurate initial value for first_binding. */ | |
4521 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4522 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4523 | break; |
4524 | ||
3b9189f8 | 4525 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4526 | t = 0; |
4527 | ||
4528 | /* These are no-ops the first time through, but if we restart, they | |
4529 | revert the echo area and this_command_keys to their original state. */ | |
4530 | this_command_key_count = keys_start; | |
40932d1a | 4531 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
4532 | echo_truncate (echo_start); |
4533 | ||
cca310da JB |
4534 | /* If the best binding for the current key sequence is a keymap, or |
4535 | we may be looking at a function key's escape sequence, keep on | |
4536 | reading. */ | |
253598e4 | 4537 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4538 | || (first_binding >= nmaps |
4539 | && fkey_start < t | |
4540 | /* mock input is never part of a function key's sequence. */ | |
a612e298 RS |
4541 | && mock_input <= fkey_start) |
4542 | || (first_binding >= nmaps | |
4543 | && keytran_start < t | |
4544 | /* mock input is never part of a function key's sequence. */ | |
e9bf89a0 RS |
4545 | && mock_input <= keytran_start) |
4546 | /* Don't return in the middle of a possible function key sequence, | |
4547 | if the only bindings we found were via case conversion. | |
4548 | Thus, if ESC O a has a function-key-map translation | |
4549 | and ESC o has a binding, don't return after ESC O, | |
4550 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 4551 | ) |
284f4730 JB |
4552 | { |
4553 | Lisp_Object key; | |
7d6de002 | 4554 | int used_mouse_menu = 0; |
284f4730 | 4555 | |
7b4aedb9 JB |
4556 | /* Where the last real key started. If we need to throw away a |
4557 | key that has expanded into more than one element of keybuf | |
4558 | (say, a mouse click on the mode line which is being treated | |
4559 | as [mode-line (mouse-...)], then we backtrack to this point | |
4560 | of keybuf. */ | |
4561 | int last_real_key_start; | |
4562 | ||
0a7f1fc0 JB |
4563 | /* These variables are analogous to echo_start and keys_start; |
4564 | while those allow us to restart the entire key sequence, | |
4565 | echo_local_start and keys_local_start allow us to throw away | |
4566 | just one key. */ | |
f4255cd1 JB |
4567 | int echo_local_start, keys_local_start, local_first_binding; |
4568 | ||
284f4730 JB |
4569 | if (t >= bufsize) |
4570 | error ("key sequence too long"); | |
4571 | ||
f4255cd1 JB |
4572 | if (INTERACTIVE) |
4573 | echo_local_start = echo_length (); | |
4574 | keys_local_start = this_command_key_count; | |
4575 | local_first_binding = first_binding; | |
4576 | ||
4577 | replay_key: | |
0a7f1fc0 | 4578 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4579 | jumped back up to replay_key; in that case, these restore the |
4580 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4581 | loop. */ |
40932d1a | 4582 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4583 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4584 | this_command_key_count = keys_local_start; |
4585 | first_binding = local_first_binding; | |
4586 | ||
7e85b935 RS |
4587 | /* By default, assume each event is "real". */ |
4588 | last_real_key_start = t; | |
4589 | ||
f4255cd1 | 4590 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4591 | if (t < mock_input) |
4592 | { | |
4593 | key = keybuf[t]; | |
4594 | add_command_key (key); | |
a98ea3f9 RS |
4595 | if (echo_keystrokes) |
4596 | echo_char (key); | |
284f4730 | 4597 | } |
253598e4 JB |
4598 | |
4599 | /* If not, we should actually read a character. */ | |
284f4730 JB |
4600 | else |
4601 | { | |
a6d53864 RS |
4602 | struct buffer *buf = current_buffer; |
4603 | ||
84d91fda | 4604 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
a6d53864 | 4605 | &used_mouse_menu); |
284f4730 | 4606 | |
dcc408a0 RS |
4607 | /* read_char returns t when it shows a menu and the user rejects it. |
4608 | Just return -1. */ | |
4609 | if (EQ (key, Qt)) | |
4610 | return -1; | |
4611 | ||
f4255cd1 | 4612 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
4613 | Emacs 18 handles this by returning immediately with a |
4614 | zero, so that's what we'll do. */ | |
86e5706b | 4615 | if (XTYPE (key) == Lisp_Int && XINT (key) == -1) |
cd21b839 | 4616 | { |
f4255cd1 JB |
4617 | t = 0; |
4618 | goto done; | |
cd21b839 | 4619 | } |
284f4730 | 4620 | |
3cb81011 KH |
4621 | /* If the current buffer has been changed from under us, the |
4622 | keymap may have changed, so replay the sequence. */ | |
4623 | if (XTYPE (key) == Lisp_Buffer) | |
4624 | { | |
4625 | mock_input = t; | |
4626 | goto replay_sequence; | |
4627 | } | |
4628 | ||
3b9189f8 RS |
4629 | /* If we have a quit that was typed in another frame, and |
4630 | quit_throw_to_read_char switched buffers, | |
4631 | replay to get the right keymap. */ | |
4632 | if (EQ (key, quit_char) && current_buffer != starting_buffer) | |
4633 | { | |
4634 | keybuf[t++] = key; | |
4635 | mock_input = t; | |
4636 | Vquit_flag = Qnil; | |
4637 | goto replay_sequence; | |
4638 | } | |
3cb81011 | 4639 | |
284f4730 | 4640 | Vquit_flag = Qnil; |
7e85b935 | 4641 | } |
284f4730 | 4642 | |
7e85b935 RS |
4643 | /* Clicks in non-text areas get prefixed by the symbol |
4644 | in their CHAR-ADDRESS field. For example, a click on | |
4645 | the mode line is prefixed by the symbol `mode-line'. | |
4646 | ||
4647 | Furthermore, key sequences beginning with mouse clicks | |
4648 | are read using the keymaps of the buffer clicked on, not | |
4649 | the current buffer. So we may have to switch the buffer | |
4650 | here. | |
4651 | ||
4652 | When we turn one event into two events, we must make sure | |
4653 | that neither of the two looks like the original--so that, | |
4654 | if we replay the events, they won't be expanded again. | |
4655 | If not for this, such reexpansion could happen either here | |
4656 | or when user programs play with this-command-keys. */ | |
4657 | if (EVENT_HAS_PARAMETERS (key)) | |
4658 | { | |
9b8eb840 | 4659 | Lisp_Object kind; |
cca310da | 4660 | |
9b8eb840 | 4661 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 4662 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 4663 | { |
9b8eb840 | 4664 | Lisp_Object window, posn; |
f4255cd1 | 4665 | |
9b8eb840 KH |
4666 | window = POSN_WINDOW (EVENT_START (key)); |
4667 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
7e85b935 | 4668 | if (XTYPE (posn) == Lisp_Cons) |
0a7f1fc0 | 4669 | { |
7e85b935 RS |
4670 | /* We're looking at the second event of a |
4671 | sequence which we expanded before. Set | |
4672 | last_real_key_start appropriately. */ | |
4673 | if (t > 0) | |
4674 | last_real_key_start = t - 1; | |
cd21b839 | 4675 | } |
7e85b935 RS |
4676 | |
4677 | /* Key sequences beginning with mouse clicks are | |
4678 | read using the keymaps in the buffer clicked on, | |
4679 | not the current buffer. If we're at the | |
4680 | beginning of a key sequence, switch buffers. */ | |
4681 | if (last_real_key_start == 0 | |
4682 | && XTYPE (window) == Lisp_Window | |
4683 | && XTYPE (XWINDOW (window)->buffer) == Lisp_Buffer | |
4684 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) | |
cd21b839 | 4685 | { |
7e85b935 RS |
4686 | keybuf[t] = key; |
4687 | mock_input = t + 1; | |
4688 | ||
4689 | /* Arrange to go back to the original buffer once we're | |
4690 | done reading the key sequence. Note that we can't | |
4691 | use save_excursion_{save,restore} here, because they | |
4692 | save point as well as the current buffer; we don't | |
4693 | want to save point, because redisplay may change it, | |
4694 | to accommodate a Fset_window_start or something. We | |
4695 | don't want to do this at the top of the function, | |
4696 | because we may get input from a subprocess which | |
4697 | wants to change the selected window and stuff (say, | |
4698 | emacsclient). */ | |
4699 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4700 | ||
4701 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
4702 | goto replay_sequence; | |
0a7f1fc0 | 4703 | } |
7e85b935 | 4704 | else if (XTYPE (posn) == Lisp_Symbol) |
5ec75a55 | 4705 | { |
7e85b935 RS |
4706 | /* Expand mode-line and scroll-bar events into two events: |
4707 | use posn as a fake prefix key. */ | |
5ec75a55 | 4708 | |
7e85b935 RS |
4709 | if (t + 1 >= bufsize) |
4710 | error ("key sequence too long"); | |
4711 | keybuf[t] = posn; | |
4712 | keybuf[t+1] = key; | |
4713 | mock_input = t + 2; | |
4714 | ||
4715 | /* Zap the position in key, so we know that we've | |
4716 | expanded it, and don't try to do so again. */ | |
4717 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4718 | = Fcons (posn, Qnil); | |
4719 | goto replay_key; | |
5ec75a55 | 4720 | } |
0a7f1fc0 | 4721 | } |
7e85b935 | 4722 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4723 | { |
7e85b935 RS |
4724 | /* If we're at the beginning of a key sequence, go |
4725 | ahead and return this event. If we're in the | |
4726 | midst of a key sequence, delay it until the end. */ | |
4727 | if (t > 0) | |
4728 | { | |
4729 | delayed_switch_frame = key; | |
4730 | goto replay_key; | |
4731 | } | |
4732 | } | |
7a80a6f6 RS |
4733 | else if (CONSP (XCONS (key)->cdr) |
4734 | && CONSP (EVENT_START (key)) | |
4735 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 4736 | { |
9b8eb840 | 4737 | Lisp_Object posn; |
7e85b935 | 4738 | |
9b8eb840 | 4739 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
4740 | /* Handle menu-bar events: |
4741 | insert the dummy prefix event `menu-bar'. */ | |
4742 | if (EQ (posn, Qmenu_bar)) | |
4743 | { | |
4744 | if (t + 1 >= bufsize) | |
4745 | error ("key sequence too long"); | |
4746 | /* Run the Lucid hook. */ | |
88ce066e RS |
4747 | if (!NILP (Vrun_hooks)) |
4748 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
4749 | /* If it has changed current-menubar from previous value, |
4750 | really recompute the menubar from the value. */ | |
4751 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
4752 | call0 (Qrecompute_lucid_menubar); | |
4753 | keybuf[t] = posn; | |
4754 | keybuf[t+1] = key; | |
4755 | ||
4756 | /* Zap the position in key, so we know that we've | |
4757 | expanded it, and don't try to do so again. */ | |
4758 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4759 | = Fcons (posn, Qnil); | |
4760 | ||
4761 | mock_input = t + 2; | |
4762 | goto replay_sequence; | |
4763 | } | |
4764 | else if (XTYPE (posn) == Lisp_Cons) | |
4765 | { | |
4766 | /* We're looking at the second event of a | |
4767 | sequence which we expanded before. Set | |
4768 | last_real_key_start appropriately. */ | |
4769 | if (last_real_key_start == t && t > 0) | |
4770 | last_real_key_start = t - 1; | |
4771 | } | |
a6d53864 | 4772 | } |
284f4730 | 4773 | } |
f4255cd1 JB |
4774 | |
4775 | /* We have finally decided that KEY is something we might want | |
4776 | to look up. */ | |
284f4730 JB |
4777 | first_binding = (follow_key (key, |
4778 | nmaps - first_binding, | |
253598e4 | 4779 | submaps + first_binding, |
284f4730 | 4780 | defs + first_binding, |
4e50f26a | 4781 | submaps + first_binding) |
284f4730 | 4782 | + first_binding); |
0a7f1fc0 | 4783 | |
f4255cd1 | 4784 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
4785 | if (first_binding >= nmaps) |
4786 | { | |
9b8eb840 | 4787 | Lisp_Object head; |
0a7f1fc0 | 4788 | |
9b8eb840 | 4789 | head = EVENT_HEAD (key); |
7e85b935 RS |
4790 | if (EQ (head, Vhelp_char)) |
4791 | { | |
4792 | read_key_sequence_cmd = Vprefix_help_command; | |
4793 | keybuf[t++] = key; | |
4794 | last_nonmenu_event = key; | |
4795 | goto done; | |
4796 | } | |
4797 | ||
0a7f1fc0 JB |
4798 | if (XTYPE (head) == Lisp_Symbol) |
4799 | { | |
9b8eb840 KH |
4800 | Lisp_Object breakdown; |
4801 | int modifiers; | |
0a7f1fc0 | 4802 | |
9b8eb840 KH |
4803 | breakdown = parse_modifiers (head); |
4804 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
4805 | /* Attempt to reduce an unbound mouse event to a simpler |
4806 | event that is bound: | |
4807 | Drags reduce to clicks. | |
4808 | Double-clicks reduce to clicks. | |
4809 | Triple-clicks reduce to double-clicks, then to clicks. | |
4810 | Down-clicks are eliminated. | |
4811 | Double-downs reduce to downs, then are eliminated. | |
4812 | Triple-downs reduce to double-downs, then to downs, | |
4813 | then are eliminated. */ | |
4814 | if (modifiers & (down_modifier | drag_modifier | |
4815 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4816 | { |
559f9d04 RS |
4817 | while (modifiers & (down_modifier | drag_modifier |
4818 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
4819 | { |
4820 | Lisp_Object new_head, new_click; | |
4821 | if (modifiers & triple_modifier) | |
4822 | modifiers ^= (double_modifier | triple_modifier); | |
559f9d04 | 4823 | else if (modifiers & (drag_modifier | double_modifier)) |
fbcd35bd | 4824 | modifiers &= ~(drag_modifier | double_modifier); |
559f9d04 RS |
4825 | else |
4826 | { | |
4827 | /* Dispose of this `down' event by simply jumping | |
4828 | back to replay_key, to get another event. | |
4829 | ||
4830 | Note that if this event came from mock input, | |
4831 | then just jumping back to replay_key will just | |
4832 | hand it to us again. So we have to wipe out any | |
4833 | mock input. | |
4834 | ||
4835 | We could delete keybuf[t] and shift everything | |
4836 | after that to the left by one spot, but we'd also | |
4837 | have to fix up any variable that points into | |
4838 | keybuf, and shifting isn't really necessary | |
4839 | anyway. | |
4840 | ||
4841 | Adding prefixes for non-textual mouse clicks | |
4842 | creates two characters of mock input, and both | |
4843 | must be thrown away. If we're only looking at | |
4844 | the prefix now, we can just jump back to | |
4845 | replay_key. On the other hand, if we've already | |
4846 | processed the prefix, and now the actual click | |
4847 | itself is giving us trouble, then we've lost the | |
4848 | state of the keymaps we want to backtrack to, and | |
4849 | we need to replay the whole sequence to rebuild | |
4850 | it. | |
4851 | ||
4852 | Beyond that, only function key expansion could | |
4853 | create more than two keys, but that should never | |
4854 | generate mouse events, so it's okay to zero | |
4855 | mock_input in that case too. | |
4856 | ||
4857 | Isn't this just the most wonderful code ever? */ | |
4858 | if (t == last_real_key_start) | |
4859 | { | |
4860 | mock_input = 0; | |
4861 | goto replay_key; | |
4862 | } | |
4863 | else | |
4864 | { | |
4865 | mock_input = last_real_key_start; | |
4866 | goto replay_sequence; | |
4867 | } | |
4868 | } | |
4869 | ||
27203ead RS |
4870 | new_head |
4871 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
4872 | new_click | |
4873 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
4874 | |
4875 | /* Look for a binding for this new key. follow_key | |
4876 | promises that it didn't munge submaps the | |
4877 | last time we called it, since key was unbound. */ | |
27203ead RS |
4878 | first_binding |
4879 | = (follow_key (new_click, | |
4880 | nmaps - local_first_binding, | |
4881 | submaps + local_first_binding, | |
4882 | defs + local_first_binding, | |
4e50f26a | 4883 | submaps + local_first_binding) |
27203ead | 4884 | + local_first_binding); |
fbcd35bd JB |
4885 | |
4886 | /* If that click is bound, go for it. */ | |
4887 | if (first_binding < nmaps) | |
4888 | { | |
4889 | key = new_click; | |
4890 | break; | |
4891 | } | |
4892 | /* Otherwise, we'll leave key set to the drag event. */ | |
4893 | } | |
0a7f1fc0 JB |
4894 | } |
4895 | } | |
4896 | } | |
4897 | ||
284f4730 | 4898 | keybuf[t++] = key; |
7d6de002 RS |
4899 | /* Normally, last_nonmenu_event gets the previous key we read. |
4900 | But when a mouse popup menu is being used, | |
4901 | we don't update last_nonmenu_event; it continues to hold the mouse | |
4902 | event that preceded the first level of menu. */ | |
4903 | if (!used_mouse_menu) | |
4904 | last_nonmenu_event = key; | |
284f4730 JB |
4905 | |
4906 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
4907 | off the end of it. We only want to scan real keyboard input |
4908 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 4909 | re-reading old events, don't examine it. */ |
4e50f26a | 4910 | if (first_binding >= nmaps |
253598e4 | 4911 | && t >= mock_input) |
284f4730 JB |
4912 | { |
4913 | Lisp_Object fkey_next; | |
4914 | ||
e9bf89a0 RS |
4915 | /* Continue scan from fkey_end until we find a bound suffix. |
4916 | If we fail, increment fkey_start | |
4917 | and start fkey_end from there. */ | |
284f4730 JB |
4918 | while (fkey_end < t) |
4919 | { | |
f4255cd1 JB |
4920 | Lisp_Object key; |
4921 | ||
4922 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
4923 | /* Look up meta-characters by prefixing them |
4924 | with meta_prefix_char. I hate this. */ | |
d3cc13fa | 4925 | if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier) |
f4255cd1 | 4926 | { |
e74fbc70 RS |
4927 | fkey_next |
4928 | = get_keymap_1 | |
f4255cd1 | 4929 | (get_keyelt |
e74fbc70 | 4930 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 4931 | 0, 1); |
d3cc13fa | 4932 | XFASTINT (key) = XFASTINT (key) & ~meta_modifier; |
f4255cd1 | 4933 | } |
067ffa38 JB |
4934 | else |
4935 | fkey_next = fkey_map; | |
4936 | ||
e74fbc70 RS |
4937 | fkey_next |
4938 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 4939 | |
7a80a6f6 RS |
4940 | #if 0 /* I didn't turn this on, because it might cause trouble |
4941 | for the mapping of return into C-m and tab into C-i. */ | |
4942 | /* Optionally don't map function keys into other things. | |
4943 | This enables the user to redefine kp- keys easily. */ | |
4944 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
4945 | fkey_next = Qnil; | |
4946 | #endif | |
4947 | ||
1abe6abe RS |
4948 | /* If the function key map gives a function, not an |
4949 | array, then call the function with no args and use | |
4950 | its value instead. */ | |
4951 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
4952 | && fkey_end == t) | |
4953 | { | |
4954 | struct gcpro gcpro1, gcpro2, gcpro3; | |
4955 | Lisp_Object tem; | |
4956 | tem = fkey_next; | |
4957 | ||
4958 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 4959 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
4960 | UNGCPRO; |
4961 | /* If the function returned something invalid, | |
4962 | barf--don't ignore it. | |
4963 | (To ignore it safely, we would need to gcpro a bunch of | |
4964 | other variables.) */ | |
4965 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
4966 | error ("Function in function-key-map returns invalid key sequence"); | |
4967 | } | |
4968 | ||
e9bf89a0 RS |
4969 | function_key_possible = ! NILP (fkey_next); |
4970 | ||
85bc5181 | 4971 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 4972 | function key map and it's a suffix of the current |
85bc5181 | 4973 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 4974 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 4975 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
4976 | && fkey_end == t) |
4977 | { | |
2e864a76 | 4978 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
4979 | |
4980 | t = fkey_start + len; | |
284f4730 JB |
4981 | if (t >= bufsize) |
4982 | error ("key sequence too long"); | |
4983 | ||
f5ea6163 JB |
4984 | if (VECTORP (fkey_next)) |
4985 | bcopy (XVECTOR (fkey_next)->contents, | |
4986 | keybuf + fkey_start, | |
4987 | (t - fkey_start) * sizeof (keybuf[0])); | |
4988 | else if (STRINGP (fkey_next)) | |
4989 | { | |
4990 | int i; | |
4991 | ||
4992 | for (i = 0; i < len; i++) | |
1abe6abe RS |
4993 | XFASTINT (keybuf[fkey_start + i]) |
4994 | = XSTRING (fkey_next)->data[i]; | |
f5ea6163 | 4995 | } |
284f4730 JB |
4996 | |
4997 | mock_input = t; | |
4998 | fkey_start = fkey_end = t; | |
32e6d806 | 4999 | fkey_map = Vfunction_key_map; |
284f4730 | 5000 | |
f4255cd1 | 5001 | goto replay_sequence; |
284f4730 JB |
5002 | } |
5003 | ||
f4255cd1 | 5004 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5005 | |
a764a753 JB |
5006 | /* If we no longer have a bound suffix, try a new positions for |
5007 | fkey_start. */ | |
284f4730 JB |
5008 | if (NILP (fkey_map)) |
5009 | { | |
5010 | fkey_end = ++fkey_start; | |
5011 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5012 | function_key_possible = 0; |
284f4730 JB |
5013 | } |
5014 | } | |
5015 | } | |
a612e298 RS |
5016 | |
5017 | /* Look for this sequence in key-translation-map. */ | |
5018 | { | |
5019 | Lisp_Object keytran_next; | |
5020 | ||
5021 | /* Scan from keytran_end until we find a bound suffix. */ | |
5022 | while (keytran_end < t) | |
5023 | { | |
5024 | Lisp_Object key; | |
5025 | ||
5026 | key = keybuf[keytran_end++]; | |
5027 | /* Look up meta-characters by prefixing them | |
5028 | with meta_prefix_char. I hate this. */ | |
5029 | if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier) | |
5030 | { | |
5031 | keytran_next | |
5032 | = get_keymap_1 | |
5033 | (get_keyelt | |
5034 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5035 | 0, 1); | |
5036 | XFASTINT (key) = XFASTINT (key) & ~meta_modifier; | |
5037 | } | |
5038 | else | |
5039 | keytran_next = keytran_map; | |
5040 | ||
5041 | keytran_next | |
5042 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5043 | ||
1abe6abe RS |
5044 | /* If the key translation map gives a function, not an |
5045 | array, then call the function with no args and use | |
5046 | its value instead. */ | |
5047 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5048 | && keytran_end == t) | |
5049 | { | |
5050 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5051 | Lisp_Object tem; | |
5052 | tem = keytran_next; | |
5053 | ||
40932d1a | 5054 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5055 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5056 | UNGCPRO; |
5057 | /* If the function returned something invalid, | |
5058 | barf--don't ignore it. | |
5059 | (To ignore it safely, we would need to gcpro a bunch of | |
5060 | other variables.) */ | |
5061 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5062 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5063 | } |
5064 | ||
a612e298 | 5065 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5066 | key translation map and it's a suffix of the current |
a612e298 RS |
5067 | sequence (i.e. keytran_end == t), replace it with |
5068 | the binding and restart with keytran_start at the end. */ | |
5069 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5070 | && keytran_end == t) | |
5071 | { | |
2e864a76 | 5072 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5073 | |
5074 | t = keytran_start + len; | |
5075 | if (t >= bufsize) | |
5076 | error ("key sequence too long"); | |
5077 | ||
5078 | if (VECTORP (keytran_next)) | |
5079 | bcopy (XVECTOR (keytran_next)->contents, | |
5080 | keybuf + keytran_start, | |
5081 | (t - keytran_start) * sizeof (keybuf[0])); | |
5082 | else if (STRINGP (keytran_next)) | |
5083 | { | |
5084 | int i; | |
5085 | ||
5086 | for (i = 0; i < len; i++) | |
5087 | XFASTINT (keybuf[keytran_start + i]) | |
5088 | = XSTRING (keytran_next)->data[i]; | |
5089 | } | |
5090 | ||
5091 | mock_input = t; | |
5092 | keytran_start = keytran_end = t; | |
5093 | keytran_map = Vkey_translation_map; | |
5094 | ||
5095 | goto replay_sequence; | |
5096 | } | |
5097 | ||
5098 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5099 | ||
5100 | /* If we no longer have a bound suffix, try a new positions for | |
5101 | keytran_start. */ | |
5102 | if (NILP (keytran_map)) | |
5103 | { | |
5104 | keytran_end = ++keytran_start; | |
5105 | keytran_map = Vkey_translation_map; | |
5106 | } | |
5107 | } | |
5108 | } | |
4e50f26a RS |
5109 | |
5110 | /* If KEY is not defined in any of the keymaps, | |
5111 | and cannot be part of a function key or translation, | |
5112 | and is an upper case letter | |
5113 | use the corresponding lower-case letter instead. */ | |
5114 | if (first_binding == nmaps && ! function_key_possible | |
5115 | && XTYPE (key) == Lisp_Int | |
5116 | && ((((XINT (key) & 0x3ffff) | |
5117 | < XSTRING (current_buffer->downcase_table)->size) | |
5118 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5119 | || (XINT (key) & shift_modifier))) | |
5120 | { | |
5121 | if (XINT (key) & shift_modifier) | |
5122 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5123 | else | |
5124 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5125 | | (XINT (key) & ~0x3ffff))); | |
5126 | ||
5127 | keybuf[t - 1] = key; | |
5128 | mock_input = t; | |
5129 | goto replay_sequence; | |
5130 | } | |
284f4730 JB |
5131 | } |
5132 | ||
5133 | read_key_sequence_cmd = (first_binding < nmaps | |
5134 | ? defs[first_binding] | |
5135 | : Qnil); | |
5136 | ||
f4255cd1 | 5137 | done: |
cd21b839 | 5138 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5139 | unbind_to (count, Qnil); |
07f76a14 JB |
5140 | |
5141 | /* Occasionally we fabricate events, perhaps by expanding something | |
5142 | according to function-key-map, or by adding a prefix symbol to a | |
5143 | mouse click in the scroll bar or modeline. In this cases, return | |
5144 | the entire generated key sequence, even if we hit an unbound | |
5145 | prefix or a definition before the end. This means that you will | |
5146 | be able to push back the event properly, and also means that | |
5147 | read-key-sequence will always return a logical unit. | |
5148 | ||
5149 | Better ideas? */ | |
cca310da JB |
5150 | for (; t < mock_input; t++) |
5151 | { | |
a98ea3f9 RS |
5152 | if (echo_keystrokes) |
5153 | echo_char (keybuf[t]); | |
cca310da JB |
5154 | add_command_key (keybuf[t]); |
5155 | } | |
07f76a14 | 5156 | |
284f4730 JB |
5157 | return t; |
5158 | } | |
5159 | ||
a612e298 RS |
5160 | #if 0 /* This doc string is too long for some compilers. |
5161 | This commented-out definition serves for DOC. */ | |
c0a58692 | 5162 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
5163 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5164 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5165 | current local and global maps.\n\ | |
5166 | \n\ | |
c0a58692 RS |
5167 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5168 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5169 | as a continuation of the previous key.\n\ | |
284f4730 | 5170 | \n\ |
cb5df6ae JB |
5171 | A C-g typed while in this function is treated like any other character,\n\ |
5172 | and `quit-flag' is not set.\n\ | |
5173 | \n\ | |
5174 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5175 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5176 | of the selected window as normal.\n\ | |
ede41463 | 5177 | ""\n\ |
cb5df6ae JB |
5178 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5179 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5180 | or multi-click event is unbound, but the corresponding click event would\n\ |
5181 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5182 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5183 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5184 | \n\ |
5185 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5186 | lines separating windows, and scroll bars with imaginary keys\n\ |
5187 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
5188 | \n\ |
5189 | If the user switches frames in the middle of a key sequence, the\n\ | |
5190 | frame-switch event is put off until after the current key sequence.\n\ | |
5191 | \n\ | |
5192 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5193 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5194 | `function-key-map' for more details.") |
a612e298 RS |
5195 | (prompt, continue_echo) |
5196 | #endif | |
5197 | ||
5198 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, | |
5199 | 0) | |
c0a58692 RS |
5200 | (prompt, continue_echo) |
5201 | Lisp_Object prompt, continue_echo; | |
284f4730 JB |
5202 | { |
5203 | Lisp_Object keybuf[30]; | |
5204 | register int i; | |
5205 | struct gcpro gcpro1, gcpro2; | |
5206 | ||
5207 | if (!NILP (prompt)) | |
5208 | CHECK_STRING (prompt, 0); | |
5209 | QUIT; | |
5210 | ||
5211 | bzero (keybuf, sizeof keybuf); | |
5212 | GCPRO1 (keybuf[0]); | |
5213 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5214 | ||
daa37602 | 5215 | if (NILP (continue_echo)) |
c0a58692 RS |
5216 | this_command_key_count = 0; |
5217 | ||
84d91fda | 5218 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), prompt); |
284f4730 | 5219 | |
dcc408a0 RS |
5220 | if (i == -1) |
5221 | { | |
5222 | Vquit_flag = Qt; | |
5223 | QUIT; | |
5224 | } | |
284f4730 | 5225 | UNGCPRO; |
86e5706b | 5226 | return make_event_array (i, keybuf); |
284f4730 JB |
5227 | } |
5228 | \f | |
5229 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5230 | "Execute CMD as an editor command.\n\ | |
5231 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5232 | Optional second arg RECORD-FLAG non-nil\n\ | |
5233 | means unconditionally put this command in `command-history'.\n\ | |
5234 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5235 | (cmd, record) | |
5236 | Lisp_Object cmd, record; | |
5237 | { | |
5238 | register Lisp_Object final; | |
5239 | register Lisp_Object tem; | |
5240 | Lisp_Object prefixarg; | |
5241 | struct backtrace backtrace; | |
5242 | extern int debug_on_next_call; | |
5243 | ||
5244 | prefixarg = Vprefix_arg, Vprefix_arg = Qnil; | |
5245 | Vcurrent_prefix_arg = prefixarg; | |
5246 | debug_on_next_call = 0; | |
5247 | ||
5248 | if (XTYPE (cmd) == Lisp_Symbol) | |
5249 | { | |
5250 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5251 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5252 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5253 | } |
5254 | ||
5255 | while (1) | |
5256 | { | |
ffd56f97 | 5257 | final = Findirect_function (cmd); |
284f4730 JB |
5258 | |
5259 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5260 | do_autoload (final, cmd); | |
5261 | else | |
5262 | break; | |
5263 | } | |
5264 | ||
5265 | if (XTYPE (final) == Lisp_String | |
5266 | || XTYPE (final) == Lisp_Vector) | |
5267 | { | |
5268 | /* If requested, place the macro in the command history. For | |
5269 | other sorts of commands, call-interactively takes care of | |
5270 | this. */ | |
5271 | if (!NILP (record)) | |
5272 | Vcommand_history | |
5273 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5274 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5275 | Vcommand_history); | |
5276 | ||
5277 | return Fexecute_kbd_macro (final, prefixarg); | |
5278 | } | |
5279 | if (CONSP (final) || XTYPE (final) == Lisp_Subr | |
5280 | || XTYPE (final) == Lisp_Compiled) | |
5281 | { | |
5282 | backtrace.next = backtrace_list; | |
5283 | backtrace_list = &backtrace; | |
5284 | backtrace.function = &Qcall_interactively; | |
5285 | backtrace.args = &cmd; | |
5286 | backtrace.nargs = 1; | |
5287 | backtrace.evalargs = 0; | |
5288 | ||
5289 | tem = Fcall_interactively (cmd, record); | |
5290 | ||
5291 | backtrace_list = backtrace.next; | |
5292 | return tem; | |
5293 | } | |
5294 | return Qnil; | |
5295 | } | |
5296 | \f | |
284f4730 JB |
5297 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5298 | 1, 1, "P", | |
5299 | "Read function name, then read its arguments and call it.") | |
5300 | (prefixarg) | |
5301 | Lisp_Object prefixarg; | |
5302 | { | |
5303 | Lisp_Object function; | |
5304 | char buf[40]; | |
5305 | Lisp_Object saved_keys; | |
5306 | struct gcpro gcpro1; | |
5307 | ||
b0f2a7bf KH |
5308 | saved_keys = Fvector (this_command_key_count, |
5309 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5310 | buf[0] = 0; |
5311 | GCPRO1 (saved_keys); | |
5312 | ||
5313 | if (EQ (prefixarg, Qminus)) | |
5314 | strcpy (buf, "- "); | |
5315 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5316 | strcpy (buf, "C-u "); | |
5317 | else if (CONSP (prefixarg) && XTYPE (XCONS (prefixarg)->car) == Lisp_Int) | |
5318 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
5319 | else if (XTYPE (prefixarg) == Lisp_Int) | |
5320 | sprintf (buf, "%d ", XINT (prefixarg)); | |
5321 | ||
5322 | /* This isn't strictly correct if execute-extended-command | |
5323 | is bound to anything else. Perhaps it should use | |
5324 | this_command_keys? */ | |
5325 | strcat (buf, "M-x "); | |
5326 | ||
5327 | /* Prompt with buf, and then read a string, completing from and | |
5328 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5329 | any initial input. Save the command read on the extended-command |
03b4122a | 5330 | history list. */ |
284f4730 JB |
5331 | function = Fcompleting_read (build_string (buf), |
5332 | Vobarray, Qcommandp, | |
03b4122a | 5333 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5334 | |
1113d9db JB |
5335 | /* Set this_command_keys to the concatenation of saved_keys and |
5336 | function, followed by a RET. */ | |
284f4730 | 5337 | { |
1113d9db | 5338 | struct Lisp_String *str; |
b0f2a7bf | 5339 | Lisp_Object *keys; |
284f4730 JB |
5340 | int i; |
5341 | Lisp_Object tem; | |
5342 | ||
1113d9db JB |
5343 | this_command_key_count = 0; |
5344 | ||
b0f2a7bf KH |
5345 | keys = XVECTOR (saved_keys)->contents; |
5346 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5347 | add_command_key (keys[i]); | |
1113d9db JB |
5348 | |
5349 | str = XSTRING (function); | |
5350 | for (i = 0; i < str->size; i++) | |
5351 | { | |
5352 | XFASTINT (tem) = str->data[i]; | |
5353 | add_command_key (tem); | |
5354 | } | |
5355 | ||
5356 | XFASTINT (tem) = '\015'; | |
5357 | add_command_key (tem); | |
284f4730 JB |
5358 | } |
5359 | ||
5360 | UNGCPRO; | |
5361 | ||
0a7f1fc0 | 5362 | function = Fintern (function, Qnil); |
284f4730 JB |
5363 | Vprefix_arg = prefixarg; |
5364 | this_command = function; | |
5365 | ||
5366 | return Fcommand_execute (function, Qt); | |
5367 | } | |
5368 | \f | |
5369 | ||
5370 | detect_input_pending () | |
5371 | { | |
5372 | if (!input_pending) | |
5373 | get_input_pending (&input_pending); | |
5374 | ||
5375 | return input_pending; | |
5376 | } | |
5377 | ||
ffd56f97 JB |
5378 | /* This is called in some cases before a possible quit. |
5379 | It cases the next call to detect_input_pending to recompute input_pending. | |
5380 | So calling this function unnecessarily can't do any harm. */ | |
5381 | clear_input_pending () | |
5382 | { | |
5383 | input_pending = 0; | |
5384 | } | |
5385 | ||
284f4730 JB |
5386 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5387 | "T if command input is currently available with no waiting.\n\ | |
5388 | Actually, the value is nil only if we can be sure that no input is available.") | |
5389 | () | |
5390 | { | |
24597608 | 5391 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5392 | return (Qt); |
5393 | ||
5394 | return detect_input_pending () ? Qt : Qnil; | |
5395 | } | |
5396 | ||
5397 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5398 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5399 | () |
5400 | { | |
5160df46 | 5401 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5402 | Lisp_Object val; |
5403 | ||
5404 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5405 | return Fvector (total_keys, keys); |
284f4730 JB |
5406 | else |
5407 | { | |
5160df46 JB |
5408 | val = Fvector (NUM_RECENT_KEYS, keys); |
5409 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5410 | XVECTOR (val)->contents, |
5411 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5412 | bcopy (keys, |
284f4730 JB |
5413 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5414 | recent_keys_index * sizeof (Lisp_Object)); | |
5415 | return val; | |
5416 | } | |
5417 | } | |
5418 | ||
5419 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5420 | "Return the key sequence that invoked this command.\n\ |
5421 | The value is a string or a vector.") | |
284f4730 JB |
5422 | () |
5423 | { | |
86e5706b RS |
5424 | return make_event_array (this_command_key_count, |
5425 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5426 | } |
5427 | ||
5428 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5429 | "Return the current depth in recursive edits.") | |
5430 | () | |
5431 | { | |
5432 | Lisp_Object temp; | |
5433 | XFASTINT (temp) = command_loop_level + minibuf_level; | |
5434 | return temp; | |
5435 | } | |
5436 | ||
5437 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5438 | "FOpen dribble file: ", | |
9b2471df RS |
5439 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5440 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5441 | (file) |
5442 | Lisp_Object file; | |
5443 | { | |
5444 | if (NILP (file)) | |
5445 | { | |
5446 | fclose (dribble); | |
5447 | dribble = 0; | |
5448 | } | |
5449 | else | |
5450 | { | |
5451 | file = Fexpand_file_name (file, Qnil); | |
5452 | dribble = fopen (XSTRING (file)->data, "w"); | |
5453 | } | |
5454 | return Qnil; | |
5455 | } | |
5456 | ||
5457 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5458 | "Discard the contents of the terminal input buffer.\n\ | |
5459 | Also cancel any kbd macro being defined.") | |
5460 | () | |
5461 | { | |
5462 | defining_kbd_macro = 0; | |
5463 | update_mode_lines++; | |
5464 | ||
24597608 | 5465 | Vunread_command_events = Qnil; |
86e5706b | 5466 | unread_command_char = -1; |
284f4730 JB |
5467 | |
5468 | discard_tty_input (); | |
5469 | ||
ff0b5f4c JB |
5470 | /* Without the cast, GCC complains that this assignment loses the |
5471 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5472 | with that? */ | |
5473 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; | |
7b4aedb9 | 5474 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
284f4730 JB |
5475 | input_pending = 0; |
5476 | ||
5477 | return Qnil; | |
5478 | } | |
5479 | \f | |
5480 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5481 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5482 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
5483 | control, run a subshell instead.\n\n\ | |
284f4730 | 5484 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
5485 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
5486 | \n\ | |
7df30614 | 5487 | Before suspending, call the functions in `suspend-hook' with no args.\n\ |
b7d2ebbf RS |
5488 | If any of them returns nil, don't call the rest and don't suspend.\n\ |
5489 | Otherwise, suspend normally and after resumption run the normal hook\n\ | |
284f4730 JB |
5490 | `suspend-resume-hook' if that is bound and non-nil.\n\ |
5491 | \n\ | |
5492 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 5493 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
5494 | (stuffstring) |
5495 | Lisp_Object stuffstring; | |
5496 | { | |
3a69360c | 5497 | Lisp_Object tem; |
284f4730 JB |
5498 | int count = specpdl_ptr - specpdl; |
5499 | int old_height, old_width; | |
5500 | int width, height; | |
b7d2ebbf | 5501 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
5502 | extern init_sys_modes (); |
5503 | ||
5504 | if (!NILP (stuffstring)) | |
5505 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 5506 | |
1e95ed28 JB |
5507 | /* Run the functions in suspend-hook. */ |
5508 | if (!NILP (Vrun_hooks)) | |
5509 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 5510 | |
b7d2ebbf | 5511 | GCPRO1 (stuffstring); |
ff11dfa1 | 5512 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
5513 | reset_sys_modes (); |
5514 | /* sys_suspend can get an error if it tries to fork a subshell | |
5515 | and the system resources aren't available for that. */ | |
5516 | record_unwind_protect (init_sys_modes, 0); | |
5517 | stuff_buffered_input (stuffstring); | |
8026024c KH |
5518 | if (cannot_suspend) |
5519 | sys_subshell (); | |
5520 | else | |
5521 | sys_suspend (); | |
284f4730 JB |
5522 | unbind_to (count, Qnil); |
5523 | ||
5524 | /* Check if terminal/window size has changed. | |
5525 | Note that this is not useful when we are running directly | |
5526 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 5527 | get_frame_size (&width, &height); |
284f4730 | 5528 | if (width != old_width || height != old_height) |
f5ea6163 | 5529 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 5530 | |
1e95ed28 | 5531 | /* Run suspend-resume-hook. */ |
284f4730 JB |
5532 | if (!NILP (Vrun_hooks)) |
5533 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
5534 | ||
5535 | UNGCPRO; | |
5536 | return Qnil; | |
5537 | } | |
5538 | ||
5539 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 5540 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
5541 | |
5542 | stuff_buffered_input (stuffstring) | |
5543 | Lisp_Object stuffstring; | |
5544 | { | |
5545 | register unsigned char *p; | |
5546 | ||
5547 | /* stuff_char works only in BSD, versions 4.2 and up. */ | |
5548 | #ifdef BSD | |
5549 | #ifndef BSD4_1 | |
5550 | if (XTYPE (stuffstring) == Lisp_String) | |
5551 | { | |
5552 | register int count; | |
5553 | ||
5554 | p = XSTRING (stuffstring)->data; | |
5555 | count = XSTRING (stuffstring)->size; | |
5556 | while (count-- > 0) | |
5557 | stuff_char (*p++); | |
5558 | stuff_char ('\n'); | |
5559 | } | |
5560 | /* Anything we have read ahead, put back for the shell to read. */ | |
5561 | while (kbd_fetch_ptr != kbd_store_ptr) | |
5562 | { | |
5563 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) | |
5564 | kbd_fetch_ptr = kbd_buffer; | |
5565 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
e9bf89a0 | 5566 | stuff_char (kbd_fetch_ptr->code); |
4bb994d1 | 5567 | kbd_fetch_ptr->kind = no_event; |
7b4aedb9 JB |
5568 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr |
5569 | - kbd_buffer] | |
5570 | = Qnil); | |
284f4730 JB |
5571 | kbd_fetch_ptr++; |
5572 | } | |
5573 | input_pending = 0; | |
5574 | #endif | |
5575 | #endif /* BSD and not BSD4_1 */ | |
5576 | } | |
5577 | \f | |
ffd56f97 JB |
5578 | set_waiting_for_input (time_to_clear) |
5579 | EMACS_TIME *time_to_clear; | |
284f4730 | 5580 | { |
ffd56f97 | 5581 | input_available_clear_time = time_to_clear; |
284f4730 JB |
5582 | |
5583 | /* Tell interrupt_signal to throw back to read_char, */ | |
5584 | waiting_for_input = 1; | |
5585 | ||
5586 | /* If interrupt_signal was called before and buffered a C-g, | |
5587 | make it run again now, to avoid timing error. */ | |
5588 | if (!NILP (Vquit_flag)) | |
5589 | quit_throw_to_read_char (); | |
284f4730 JB |
5590 | } |
5591 | ||
5592 | clear_waiting_for_input () | |
5593 | { | |
5594 | /* Tell interrupt_signal not to throw back to read_char, */ | |
5595 | waiting_for_input = 0; | |
ffd56f97 | 5596 | input_available_clear_time = 0; |
284f4730 JB |
5597 | } |
5598 | ||
5599 | /* This routine is called at interrupt level in response to C-G. | |
5600 | If interrupt_input, this is the handler for SIGINT. | |
5601 | Otherwise, it is called from kbd_buffer_store_event, | |
5602 | in handling SIGIO or SIGTINT. | |
5603 | ||
5604 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
5605 | immediately throw back to read_char. | |
5606 | ||
5607 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
5608 | This causes eval to throw, when it gets a chance. | |
5609 | If quit-flag is already non-nil, it stops the job right away. */ | |
5610 | ||
5611 | SIGTYPE | |
5612 | interrupt_signal () | |
5613 | { | |
5614 | char c; | |
5615 | /* Must preserve main program's value of errno. */ | |
5616 | int old_errno = errno; | |
284f4730 JB |
5617 | |
5618 | #ifdef USG | |
7a80a6f6 RS |
5619 | if (!read_socket_hook && NILP (Vwindow_system)) |
5620 | { | |
5621 | /* USG systems forget handlers when they are used; | |
5622 | must reestablish each time */ | |
5623 | signal (SIGINT, interrupt_signal); | |
5624 | signal (SIGQUIT, interrupt_signal); | |
5625 | } | |
284f4730 JB |
5626 | #endif /* USG */ |
5627 | ||
5628 | cancel_echoing (); | |
5629 | ||
d5045cf9 | 5630 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
5631 | { |
5632 | fflush (stdout); | |
5633 | reset_sys_modes (); | |
5634 | sigfree (); | |
5635 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
5636 | /* | |
5637 | * On systems which can suspend the current process and return to the original | |
5638 | * shell, this command causes the user to end up back at the shell. | |
5639 | * The "Auto-save" and "Abort" questions are not asked until | |
5640 | * the user elects to return to emacs, at which point he can save the current | |
5641 | * job and either dump core or continue. | |
5642 | */ | |
5643 | sys_suspend (); | |
5644 | #else | |
5645 | #ifdef VMS | |
5646 | if (sys_suspend () == -1) | |
5647 | { | |
5648 | printf ("Not running as a subprocess;\n"); | |
5649 | printf ("you can continue or abort.\n"); | |
5650 | } | |
5651 | #else /* not VMS */ | |
5652 | /* Perhaps should really fork an inferior shell? | |
5653 | But that would not provide any way to get back | |
5654 | to the original shell, ever. */ | |
5655 | printf ("No support for stopping a process on this operating system;\n"); | |
5656 | printf ("you can continue or abort.\n"); | |
5657 | #endif /* not VMS */ | |
5658 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
5659 | #ifdef MSDOS |
5660 | /* We must remain inside the screen area when the internal terminal | |
5661 | is used. Note that [Enter] is not echoed by dos. */ | |
5662 | cursor_to (0, 0); | |
5663 | #endif | |
284f4730 JB |
5664 | printf ("Auto-save? (y or n) "); |
5665 | fflush (stdout); | |
5666 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
5667 | { |
5668 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
5669 | #ifdef MSDOS |
5670 | printf ("\r\nAuto-save done"); | |
5671 | #else /* not MSDOS */ | |
9fd7d808 | 5672 | printf ("Auto-save done\n"); |
80e4aa30 | 5673 | #endif /* not MSDOS */ |
9fd7d808 | 5674 | } |
284f4730 | 5675 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
5676 | #ifdef MSDOS |
5677 | printf ("\r\nAbort? (y or n) "); | |
5678 | #else /* not MSDOS */ | |
284f4730 JB |
5679 | #ifdef VMS |
5680 | printf ("Abort (and enter debugger)? (y or n) "); | |
5681 | #else /* not VMS */ | |
5682 | printf ("Abort (and dump core)? (y or n) "); | |
5683 | #endif /* not VMS */ | |
80e4aa30 | 5684 | #endif /* not MSDOS */ |
284f4730 JB |
5685 | fflush (stdout); |
5686 | if (((c = getchar ()) & ~040) == 'Y') | |
5687 | abort (); | |
5688 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
5689 | #ifdef MSDOS |
5690 | printf ("\r\nContinuing...\r\n"); | |
5691 | #else /* not MSDOS */ | |
284f4730 | 5692 | printf ("Continuing...\n"); |
80e4aa30 | 5693 | #endif /* not MSDOS */ |
284f4730 JB |
5694 | fflush (stdout); |
5695 | init_sys_modes (); | |
5696 | } | |
5697 | else | |
5698 | { | |
5699 | /* If executing a function that wants to be interrupted out of | |
5700 | and the user has not deferred quitting by binding `inhibit-quit' | |
5701 | then quit right away. */ | |
5702 | if (immediate_quit && NILP (Vinhibit_quit)) | |
5703 | { | |
5704 | immediate_quit = 0; | |
5705 | sigfree (); | |
5706 | Fsignal (Qquit, Qnil); | |
5707 | } | |
5708 | else | |
5709 | /* Else request quit when it's safe */ | |
5710 | Vquit_flag = Qt; | |
5711 | } | |
5712 | ||
5713 | if (waiting_for_input && !echoing) | |
5714 | quit_throw_to_read_char (); | |
5715 | ||
5716 | errno = old_errno; | |
5717 | } | |
5718 | ||
5719 | /* Handle a C-g by making read_char return C-g. */ | |
5720 | ||
5721 | quit_throw_to_read_char () | |
5722 | { | |
5723 | quit_error_check (); | |
5724 | sigfree (); | |
5725 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 5726 | clear_waiting_for_input (); |
284f4730 JB |
5727 | input_pending = 0; |
5728 | ||
24597608 | 5729 | Vunread_command_events = Qnil; |
86e5706b | 5730 | unread_command_char = -1; |
284f4730 | 5731 | |
e6b01c14 JB |
5732 | #ifdef POLL_FOR_INPUT |
5733 | /* May be > 1 if in recursive minibuffer. */ | |
5734 | if (poll_suppress_count == 0) | |
5735 | abort (); | |
5736 | #endif | |
0dfcc832 | 5737 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
5738 | if (XTYPE (internal_last_event_frame) == Lisp_Frame |
5739 | && XFRAME (internal_last_event_frame) != selected_frame) | |
3b9189f8 | 5740 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); |
0dfcc832 | 5741 | #endif |
e6b01c14 | 5742 | |
284f4730 JB |
5743 | _longjmp (getcjmp, 1); |
5744 | } | |
5745 | \f | |
5746 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
5747 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
5748 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
5749 | nil means use CBREAK mode.\n\ | |
5750 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 5751 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
5752 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
5753 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
5754 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
5755 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
5756 | See also `current-input-mode'.") | |
284f4730 JB |
5757 | (interrupt, flow, meta, quit) |
5758 | Lisp_Object interrupt, flow, meta, quit; | |
5759 | { | |
5760 | if (!NILP (quit) | |
5761 | && (XTYPE (quit) != Lisp_Int | |
5762 | || XINT (quit) < 0 || XINT (quit) > 0400)) | |
34f04431 RS |
5763 | error ("set-input-mode: QUIT must be an ASCII character"); |
5764 | ||
5765 | #ifdef POLL_FOR_INPUT | |
5766 | stop_polling (); | |
5767 | #endif | |
284f4730 JB |
5768 | |
5769 | reset_sys_modes (); | |
5770 | #ifdef SIGIO | |
5771 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
5772 | #ifdef NO_SOCK_SIGIO | |
5773 | if (read_socket_hook) | |
5774 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
5775 | else | |
5776 | #endif /* NO_SOCK_SIGIO */ | |
5777 | interrupt_input = !NILP (interrupt); | |
5778 | #else /* not SIGIO */ | |
5779 | interrupt_input = 0; | |
5780 | #endif /* not SIGIO */ | |
5781 | /* Our VMS input only works by interrupts, as of now. */ | |
5782 | #ifdef VMS | |
5783 | interrupt_input = 1; | |
5784 | #endif | |
5785 | flow_control = !NILP (flow); | |
b04904fb RS |
5786 | if (NILP (meta)) |
5787 | meta_key = 0; | |
5788 | else if (EQ (meta, Qt)) | |
5789 | meta_key = 1; | |
5790 | else | |
5791 | meta_key = 2; | |
284f4730 JB |
5792 | if (!NILP (quit)) |
5793 | /* Don't let this value be out of range. */ | |
5794 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
5795 | ||
5796 | init_sys_modes (); | |
34f04431 RS |
5797 | |
5798 | #ifdef POLL_FOR_INPUT | |
5799 | poll_suppress_count = 1; | |
5800 | start_polling (); | |
5801 | #endif | |
284f4730 JB |
5802 | return Qnil; |
5803 | } | |
80645119 JB |
5804 | |
5805 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
5806 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
5807 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
5808 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
5809 | nil, Emacs is using CBREAK mode.\n\ | |
5810 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
5811 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
5812 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
5813 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
5814 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
5815 | all 8 bits as the character code.\n\ | |
80645119 JB |
5816 | QUIT is the character Emacs currently uses to quit.\n\ |
5817 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 5818 | `set-input-mode'.") |
80645119 JB |
5819 | () |
5820 | { | |
5821 | Lisp_Object val[4]; | |
5822 | ||
5823 | val[0] = interrupt_input ? Qt : Qnil; | |
5824 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 5825 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
7b50ece7 | 5826 | XFASTINT (val[3]) = quit_char; |
80645119 | 5827 | |
bf673a7a | 5828 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
5829 | } |
5830 | ||
284f4730 JB |
5831 | \f |
5832 | init_keyboard () | |
5833 | { | |
284f4730 JB |
5834 | /* This is correct before outermost invocation of the editor loop */ |
5835 | command_loop_level = -1; | |
5836 | immediate_quit = 0; | |
5837 | quit_char = Ctl ('g'); | |
24597608 | 5838 | Vunread_command_events = Qnil; |
86e5706b | 5839 | unread_command_char = -1; |
284f4730 | 5840 | total_keys = 0; |
9deb415a | 5841 | recent_keys_index = 0; |
284f4730 JB |
5842 | kbd_fetch_ptr = kbd_buffer; |
5843 | kbd_store_ptr = kbd_buffer; | |
5844 | do_mouse_tracking = 0; | |
5845 | input_pending = 0; | |
5846 | ||
07d2b8de | 5847 | #ifdef MULTI_FRAME |
8f805655 JB |
5848 | /* This means that command_loop_1 won't try to select anything the first |
5849 | time through. */ | |
3c370943 JB |
5850 | internal_last_event_frame = Qnil; |
5851 | Vlast_event_frame = internal_last_event_frame; | |
7b4aedb9 JB |
5852 | #endif |
5853 | ||
5854 | /* If we're running a dumped Emacs, we need to clear out | |
5855 | kbd_buffer_frame_or_window, in case some events got into it | |
5856 | before we dumped. | |
4bb994d1 | 5857 | |
7b4aedb9 JB |
5858 | If we're running an undumped Emacs, it hasn't been initialized by |
5859 | syms_of_keyboard yet. */ | |
4bb994d1 | 5860 | if (initialized) |
7b4aedb9 | 5861 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
07d2b8de | 5862 | |
7a80a6f6 | 5863 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
5864 | { |
5865 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 5866 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
5867 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
5868 | SIGQUIT and we can't tell which one it will give us. */ | |
5869 | signal (SIGQUIT, interrupt_signal); | |
5870 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 5871 | } |
284f4730 JB |
5872 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
5873 | #ifdef SIGIO | |
7a80a6f6 RS |
5874 | if (!noninteractive) |
5875 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 5876 | #endif /* SIGIO */ |
284f4730 JB |
5877 | |
5878 | /* Use interrupt input by default, if it works and noninterrupt input | |
5879 | has deficiencies. */ | |
5880 | ||
5881 | #ifdef INTERRUPT_INPUT | |
5882 | interrupt_input = 1; | |
5883 | #else | |
5884 | interrupt_input = 0; | |
5885 | #endif | |
5886 | ||
5887 | /* Our VMS input only works by interrupts, as of now. */ | |
5888 | #ifdef VMS | |
5889 | interrupt_input = 1; | |
5890 | #endif | |
5891 | ||
5892 | sigfree (); | |
5893 | dribble = 0; | |
5894 | ||
5895 | if (keyboard_init_hook) | |
5896 | (*keyboard_init_hook) (); | |
5897 | ||
5898 | #ifdef POLL_FOR_INPUT | |
5899 | poll_suppress_count = 1; | |
5900 | start_polling (); | |
5901 | #endif | |
5902 | } | |
5903 | ||
5904 | /* This type's only use is in syms_of_keyboard, to initialize the | |
5905 | event header symbols and put properties on them. */ | |
5906 | struct event_head { | |
5907 | Lisp_Object *var; | |
5908 | char *name; | |
5909 | Lisp_Object *kind; | |
5910 | }; | |
5911 | ||
5912 | struct event_head head_table[] = { | |
7b4aedb9 | 5913 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 5914 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 5915 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
284f4730 JB |
5916 | }; |
5917 | ||
5918 | syms_of_keyboard () | |
5919 | { | |
2e894dab RS |
5920 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
5921 | staticpro (&Qdisabled_command_hook); | |
5922 | ||
284f4730 JB |
5923 | Qself_insert_command = intern ("self-insert-command"); |
5924 | staticpro (&Qself_insert_command); | |
5925 | ||
5926 | Qforward_char = intern ("forward-char"); | |
5927 | staticpro (&Qforward_char); | |
5928 | ||
5929 | Qbackward_char = intern ("backward-char"); | |
5930 | staticpro (&Qbackward_char); | |
5931 | ||
5932 | Qdisabled = intern ("disabled"); | |
5933 | staticpro (&Qdisabled); | |
5934 | ||
e58aa385 RS |
5935 | Qundefined = intern ("undefined"); |
5936 | staticpro (&Qundefined); | |
5937 | ||
86e5706b RS |
5938 | Qpre_command_hook = intern ("pre-command-hook"); |
5939 | staticpro (&Qpre_command_hook); | |
5940 | ||
5941 | Qpost_command_hook = intern ("post-command-hook"); | |
5942 | staticpro (&Qpost_command_hook); | |
5943 | ||
40932d1a RS |
5944 | Qcommand_hook_internal = intern ("command-hook-internal"); |
5945 | staticpro (&Qcommand_hook_internal); | |
5946 | ||
284f4730 JB |
5947 | Qfunction_key = intern ("function-key"); |
5948 | staticpro (&Qfunction_key); | |
13b5e56c | 5949 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 5950 | staticpro (&Qmouse_click); |
284f4730 | 5951 | |
598a9fa7 JB |
5952 | Qmenu_enable = intern ("menu-enable"); |
5953 | staticpro (&Qmenu_enable); | |
5954 | ||
284f4730 JB |
5955 | Qmode_line = intern ("mode-line"); |
5956 | staticpro (&Qmode_line); | |
e5d77022 JB |
5957 | Qvertical_line = intern ("vertical-line"); |
5958 | staticpro (&Qvertical_line); | |
3c370943 JB |
5959 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
5960 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
5961 | Qmenu_bar = intern ("menu-bar"); |
5962 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
5963 | |
5964 | Qabove_handle = intern ("above-handle"); | |
5965 | staticpro (&Qabove_handle); | |
5966 | Qhandle = intern ("handle"); | |
5967 | staticpro (&Qhandle); | |
5968 | Qbelow_handle = intern ("below-handle"); | |
5969 | staticpro (&Qbelow_handle); | |
284f4730 | 5970 | |
cd21b839 | 5971 | Qevent_kind = intern ("event-kind"); |
284f4730 | 5972 | staticpro (&Qevent_kind); |
88cb0656 JB |
5973 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
5974 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
5975 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
5976 | staticpro (&Qevent_symbol_element_mask); | |
5977 | Qmodifier_cache = intern ("modifier-cache"); | |
5978 | staticpro (&Qmodifier_cache); | |
284f4730 | 5979 | |
48e416d4 RS |
5980 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
5981 | staticpro (&Qrecompute_lucid_menubar); | |
5982 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
5983 | staticpro (&Qactivate_menubar_hook); | |
5984 | ||
f4eef8b4 RS |
5985 | Qpolling_period = intern ("polling-period"); |
5986 | staticpro (&Qpolling_period); | |
5987 | ||
284f4730 JB |
5988 | { |
5989 | struct event_head *p; | |
5990 | ||
5991 | for (p = head_table; | |
5992 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
5993 | p++) | |
5994 | { | |
5995 | *p->var = intern (p->name); | |
5996 | staticpro (p->var); | |
5997 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 5998 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
5999 | } |
6000 | } | |
6001 | ||
7b4aedb9 JB |
6002 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6003 | staticpro (&button_down_location); | |
88cb0656 JB |
6004 | |
6005 | { | |
6006 | int i; | |
6007 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6008 | ||
6009 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6010 | for (i = 0; i < len; i++) | |
86e5706b RS |
6011 | if (modifier_names[i]) |
6012 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6013 | staticpro (&modifier_symbols); |
6014 | } | |
6015 | ||
9deb415a JB |
6016 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6017 | staticpro (&recent_keys); | |
6018 | ||
6569cc8d | 6019 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6020 | staticpro (&this_command_keys); |
6569cc8d | 6021 | |
03b4122a BF |
6022 | Qextended_command_history = intern ("extended-command-history"); |
6023 | Fset (Qextended_command_history, Qnil); | |
6024 | staticpro (&Qextended_command_history); | |
6025 | ||
7b4aedb9 JB |
6026 | kbd_buffer_frame_or_window |
6027 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6028 | staticpro (&kbd_buffer_frame_or_window); | |
4bb994d1 | 6029 | |
24597608 RS |
6030 | accent_key_syms = Qnil; |
6031 | staticpro (&accent_key_syms); | |
6032 | ||
284f4730 JB |
6033 | func_key_syms = Qnil; |
6034 | staticpro (&func_key_syms); | |
6035 | ||
4e0e7d8e RS |
6036 | system_key_syms = Qnil; |
6037 | staticpro (&system_key_syms); | |
6038 | ||
284f4730 JB |
6039 | mouse_syms = Qnil; |
6040 | staticpro (&mouse_syms); | |
6041 | ||
cd21b839 JB |
6042 | unread_switch_frame = Qnil; |
6043 | staticpro (&unread_switch_frame); | |
6044 | ||
284f4730 JB |
6045 | defsubr (&Sread_key_sequence); |
6046 | defsubr (&Srecursive_edit); | |
6047 | defsubr (&Strack_mouse); | |
284f4730 JB |
6048 | defsubr (&Sinput_pending_p); |
6049 | defsubr (&Scommand_execute); | |
6050 | defsubr (&Srecent_keys); | |
6051 | defsubr (&Sthis_command_keys); | |
6052 | defsubr (&Ssuspend_emacs); | |
6053 | defsubr (&Sabort_recursive_edit); | |
6054 | defsubr (&Sexit_recursive_edit); | |
6055 | defsubr (&Srecursion_depth); | |
6056 | defsubr (&Stop_level); | |
6057 | defsubr (&Sdiscard_input); | |
6058 | defsubr (&Sopen_dribble_file); | |
6059 | defsubr (&Sset_input_mode); | |
80645119 | 6060 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6061 | defsubr (&Sexecute_extended_command); |
6062 | ||
284f4730 | 6063 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6064 | "Last input event that was part of a command."); |
6065 | ||
186cf719 | 6066 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6067 | "Last input event that was part of a command."); |
284f4730 | 6068 | |
7d6de002 | 6069 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6070 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6071 | Mouse menus give back keys that don't look like mouse events;\n\ |
6072 | this variable holds the actual mouse event that led to the menu,\n\ | |
6073 | so that you can determine whether the command was run by mouse or not."); | |
6074 | ||
284f4730 | 6075 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6076 | "Last input event."); |
6077 | ||
186cf719 | 6078 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6079 | "Last input event."); |
284f4730 | 6080 | |
24597608 | 6081 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6082 | "List of objects to be read as next command input events."); |
284f4730 | 6083 | |
86e5706b RS |
6084 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6085 | "If not -1, an object to be read as next command input event."); | |
6086 | ||
284f4730 JB |
6087 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6088 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6089 | turns into this character followed by foo."); | |
6090 | XSET (meta_prefix_char, Lisp_Int, 033); | |
6091 | ||
6092 | DEFVAR_LISP ("last-command", &last_command, | |
6093 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6094 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
6095 | `this-command' was set to by that command."); | |
6096 | last_command = Qnil; | |
6097 | ||
6098 | DEFVAR_LISP ("this-command", &this_command, | |
6099 | "The command now being executed.\n\ | |
6100 | The command can set this variable; whatever is put here\n\ | |
6101 | will be in `last-command' during the following command."); | |
6102 | this_command = Qnil; | |
6103 | ||
6104 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6105 | "*Number of keyboard input characters between auto-saves.\n\ | |
6106 | Zero means disable autosaving due to number of characters typed."); | |
6107 | auto_save_interval = 300; | |
6108 | ||
6109 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6110 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6111 | Zero or nil means disable auto-saving due to idleness.\n\ |
6112 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6113 | Emacs also does a garbage collection if that seems to be warranted."); |
284f4730 JB |
6114 | XFASTINT (Vauto_save_timeout) = 30; |
6115 | ||
6116 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6117 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6118 | echo_keystrokes = 1; | |
6119 | ||
6120 | DEFVAR_INT ("polling-period", &polling_period, | |
6121 | "*Interval between polling for input during Lisp execution.\n\ | |
6122 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6123 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6124 | Polling is automatically disabled in all other cases."); | |
6125 | polling_period = 2; | |
6126 | ||
564dc952 | 6127 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6128 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6129 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6130 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6131 | by position only."); |
aab06933 | 6132 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6133 | |
284f4730 JB |
6134 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
6135 | "*Number of complete keys read from the keyboard so far."); | |
6136 | num_input_keys = 0; | |
6137 | ||
ff11dfa1 | 6138 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
fce33686 JB |
6139 | "*The frame in which the most recently read event occurred.\n\ |
6140 | If the last event came from a keyboard macro, this is set to `macro'."); | |
ff11dfa1 | 6141 | Vlast_event_frame = Qnil; |
284f4730 | 6142 | |
7e85b935 | 6143 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6144 | "Character to recognize as meaning Help.\n\ |
6145 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6146 | If the value of `help-form' is nil, this char can be read normally."); | |
7e85b935 | 6147 | XSET (Vhelp_char, Lisp_Int, Ctl ('H')); |
284f4730 JB |
6148 | |
6149 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6150 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6151 | If the form returns a string, that string is displayed.\n\ |
6152 | If `help-form' is nil, the help char is not recognized."); | |
6153 | Vhelp_form = Qnil; | |
6154 | ||
7e85b935 RS |
6155 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6156 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6157 | This command is used only when there is no actual binding\n\ | |
6158 | for that character after that prefix key."); | |
6159 | Vprefix_help_command = Qnil; | |
6160 | ||
284f4730 JB |
6161 | DEFVAR_LISP ("top-level", &Vtop_level, |
6162 | "Form to evaluate when Emacs starts up.\n\ | |
6163 | Useful to set before you dump a modified Emacs."); | |
6164 | Vtop_level = Qnil; | |
6165 | ||
6166 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6167 | "String used as translate table for keyboard input, or nil.\n\ | |
6168 | Each character is looked up in this string and the contents used instead.\n\ | |
6169 | If string is of length N, character codes N and up are untranslated."); | |
6170 | Vkeyboard_translate_table = Qnil; | |
6171 | ||
a612e298 RS |
6172 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6173 | "Keymap of key translations that can override keymaps.\n\ | |
6174 | This keymap works like `function-key-map', but comes after that,\n\ | |
6175 | and applies even for keys that have ordinary bindings."); | |
6176 | Vkey_translation_map = Qnil; | |
6177 | ||
8026024c KH |
6178 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6179 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6180 | even if the operating system has support for stopping a process."); | |
6181 | cannot_suspend = 0; | |
6182 | ||
284f4730 | 6183 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6184 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6185 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6186 | for elements that have prompt strings.\n\ |
6187 | The menu is displayed on the screen\n\ | |
6188 | if X menus were enabled at configuration\n\ | |
6189 | time and the previous event was a mouse click prefix key.\n\ | |
6190 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6191 | menu_prompting = 1; |
6192 | ||
6193 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6194 | "Character to see next line of menu prompt.\n\ | |
6195 | Type this character while in a menu prompt to rotate around the lines of it."); | |
6196 | XSET (menu_prompt_more_char, Lisp_Int, ' '); | |
9fa4395d RS |
6197 | |
6198 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6199 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6200 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6201 | character it reads. For example, after evaluating the expression\n\ | |
80645119 JB |
6202 | (setq extra-keyboard-modifiers ?\C-x)\n\ |
6203 | all input characters will have the control modifier applied to them.\n\ | |
6204 | \n\ | |
6205 | Note that the character ?\C-@, equivalent to the integer zero, does\n\ | |
6206 | not count as a control character; rather, it counts as a character\n\ | |
27203ead | 6207 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6208 | cancels any modification."); |
9fa4395d | 6209 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6210 | |
6211 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6212 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6213 | The command loop sets this to nil before each command,\n\ | |
6214 | and tests the value when the command returns.\n\ | |
6215 | Buffer modification stores t in this variable."); | |
6216 | Vdeactivate_mark = Qnil; | |
6217 | ||
b0f2a7bf KH |
6218 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6219 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6220 | Vcommand_hook_internal = Qnil; | |
6221 | ||
86e5706b | 6222 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6223 | "Normal hook run before each command is executed.\n\ |
6224 | While the hook is run, its value is temporarily set to nil\n\ | |
6225 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6226 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6227 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6228 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6229 | Vpre_command_hook = Qnil; |
6230 | ||
6231 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6232 | "Normal hook run after each command is executed.\n\ |
6233 | While the hook is run, its value is temporarily set to nil\n\ | |
6234 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6235 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6236 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6237 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6238 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6239 | |
6240 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6241 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6242 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6243 | |
9f9c0e27 RS |
6244 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6245 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6246 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6247 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6248 | |
9dd3131c RS |
6249 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6250 | "Keymap that overrides all other local keymaps.\n\ | |
6251 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6252 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6253 | Voverriding_local_map = Qnil; | |
6254 | ||
e9bf89a0 RS |
6255 | DEFVAR_BOOL ("track-mouse", &do_mouse_tracking, |
6256 | "*Non-nil means generate motion events for mouse motion."); | |
80e4aa30 | 6257 | |
270a208f RS |
6258 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6259 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6260 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6261 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6262 | and SYMBOL is its name."); |
a69a8ca2 | 6263 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6264 | |
6265 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6266 | "List of deferred actions to be performed at a later time.\n\ | |
6267 | The precise format isn't relevant here; we just check whether it is nil."); | |
6268 | Vdeferred_action_list = Qnil; | |
6269 | ||
6270 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6271 | "Function to call to handle deferred actions, after each command.\n\ | |
6272 | This function is called with no arguments after each command\n\ | |
6273 | whenever `deferred-action-list' is non-nil."); | |
6274 | Vdeferred_action_function = Qnil; | |
284f4730 JB |
6275 | } |
6276 | ||
6277 | keys_of_keyboard () | |
6278 | { | |
6279 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6280 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6281 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6282 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6283 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6284 | } |