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 | |
284f4730 JB |
300 | /* File in which we write all commands we read. */ |
301 | FILE *dribble; | |
302 | ||
303 | /* Nonzero if input is available. */ | |
304 | int input_pending; | |
305 | ||
b04904fb RS |
306 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
307 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
308 | ||
284f4730 JB |
309 | int meta_key; |
310 | ||
311 | extern char *pending_malloc_warning; | |
312 | ||
313 | /* Circular buffer for pre-read keyboard input. */ | |
314 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
315 | ||
7b4aedb9 | 316 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. |
4bb994d1 | 317 | |
7b4aedb9 JB |
318 | The interrupt-level event handlers will never enqueue an event on a |
319 | frame which is not in Vframe_list, and once an event is dequeued, | |
3c370943 JB |
320 | internal_last_event_frame or the event itself points to the frame. |
321 | So that's all fine. | |
4bb994d1 JB |
322 | |
323 | But while the event is sitting in the queue, it's completely | |
324 | unprotected. Suppose the user types one command which will run for | |
325 | a while and then delete a frame, and then types another event at | |
326 | the frame that will be deleted, before the command gets around to | |
327 | it. Suppose there are no references to this frame elsewhere in | |
328 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
329 | have an event referring to a freed frame, which will crash Emacs | |
330 | when it is dequeued. | |
331 | ||
3c370943 | 332 | Similar things happen when an event on a scroll bar is enqueued; the |
7b4aedb9 | 333 | window may be deleted while the event is in the queue. |
4bb994d1 | 334 | |
7b4aedb9 JB |
335 | So, we use this vector to protect the frame_or_window field in the |
336 | event queue. That way, they'll be dequeued as dead frames or | |
337 | windows, but still valid lisp objects. | |
338 | ||
339 | If kbd_buffer[i].kind != no_event, then | |
340 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
341 | == kbd_buffer[i].frame_or_window. */ | |
342 | static Lisp_Object kbd_buffer_frame_or_window; | |
4bb994d1 | 343 | |
284f4730 JB |
344 | /* Pointer to next available character in kbd_buffer. |
345 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
346 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
347 | next available char is in kbd_buffer[0]. */ | |
348 | static struct input_event *kbd_fetch_ptr; | |
349 | ||
350 | /* Pointer to next place to store character in kbd_buffer. This | |
351 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
352 | character should go in kbd_buffer[0]. */ | |
ff0b5f4c JB |
353 | #ifdef __STDC__ |
354 | volatile | |
355 | #endif | |
284f4730 JB |
356 | static struct input_event *kbd_store_ptr; |
357 | ||
358 | /* The above pair of variables forms a "queue empty" flag. When we | |
359 | enqueue a non-hook event, we increment kbd_write_count. When we | |
360 | dequeue a non-hook event, we increment kbd_read_count. We say that | |
4bb994d1 | 361 | there is input available iff the two counters are not equal. |
284f4730 JB |
362 | |
363 | Why not just have a flag set and cleared by the enqueuing and | |
364 | dequeuing functions? Such a flag could be screwed up by interrupts | |
365 | at inopportune times. */ | |
366 | ||
663258f2 | 367 | /* If this flag is non-zero, we check mouse_moved to see when the |
4bb994d1 | 368 | mouse moves, and motion events will appear in the input stream. If |
663258f2 JB |
369 | it is zero, mouse motion is ignored. */ |
370 | static int do_mouse_tracking; | |
284f4730 JB |
371 | |
372 | /* The window system handling code should set this if the mouse has | |
373 | moved since the last call to the mouse_position_hook. Calling that | |
374 | hook should clear this. Code assumes that if this is set, it can | |
375 | call mouse_position_hook to get the promised position, so don't set | |
376 | it unless you're prepared to substantiate the claim! */ | |
377 | int mouse_moved; | |
378 | ||
379 | /* True iff there is an event in kbd_buffer, or if mouse tracking is | |
380 | enabled and there is a new mouse position in the mouse movement | |
381 | buffer. Note that if this is false, that doesn't mean that there | |
382 | is readable input; all the events in the queue might be button-up | |
383 | events, and do_mouse_tracking might be off. */ | |
384 | #define EVENT_QUEUES_EMPTY \ | |
385 | ((kbd_fetch_ptr == kbd_store_ptr) && (!do_mouse_tracking || !mouse_moved)) | |
386 | ||
387 | ||
388 | /* Symbols to head events. */ | |
389 | Lisp_Object Qmouse_movement; | |
3c370943 | 390 | Lisp_Object Qscroll_bar_movement; |
cd21b839 JB |
391 | Lisp_Object Qswitch_frame; |
392 | ||
284f4730 JB |
393 | /* Symbols to denote kinds of events. */ |
394 | Lisp_Object Qfunction_key; | |
395 | Lisp_Object Qmouse_click; | |
396 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
397 | |
398 | /* Properties of event headers. */ | |
399 | Lisp_Object Qevent_kind; | |
88cb0656 | 400 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 401 | |
598a9fa7 JB |
402 | Lisp_Object Qmenu_enable; |
403 | ||
0a7f1fc0 JB |
404 | /* An event header symbol HEAD may have a property named |
405 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
406 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
407 | mask of modifiers applied to it. If present, this is used to help | |
408 | speed up parse_modifiers. */ | |
409 | Lisp_Object Qevent_symbol_element_mask; | |
410 | ||
411 | /* An unmodified event header BASE may have a property named | |
412 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
413 | modified versions of BASE. If present, this helps speed up | |
414 | apply_modifiers. */ | |
415 | Lisp_Object Qmodifier_cache; | |
416 | ||
5ec75a55 | 417 | /* Symbols to use for parts of windows. */ |
284f4730 | 418 | Lisp_Object Qmode_line; |
e5d77022 | 419 | Lisp_Object Qvertical_line; |
3c370943 | 420 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
421 | Lisp_Object Qmenu_bar; |
422 | ||
423 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 424 | |
f4255cd1 JB |
425 | Lisp_Object recursive_edit_unwind (), command_loop (); |
426 | Lisp_Object Fthis_command_keys (); | |
03b4122a | 427 | Lisp_Object Qextended_command_history; |
284f4730 | 428 | |
f4eef8b4 RS |
429 | Lisp_Object Qpolling_period; |
430 | ||
ffd56f97 JB |
431 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
432 | happens. */ | |
433 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
434 | |
435 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
436 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
437 | int interrupt_input; | |
438 | ||
439 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
440 | int interrupts_deferred; | |
441 | ||
442 | /* nonzero means use ^S/^Q for flow control. */ | |
443 | int flow_control; | |
444 | ||
284f4730 JB |
445 | /* Allow m- file to inhibit use of FIONREAD. */ |
446 | #ifdef BROKEN_FIONREAD | |
447 | #undef FIONREAD | |
448 | #endif | |
449 | ||
450 | /* We are unable to use interrupts if FIONREAD is not available, | |
451 | so flush SIGIO so we won't try. */ | |
452 | #ifndef FIONREAD | |
453 | #ifdef SIGIO | |
454 | #undef SIGIO | |
455 | #endif | |
456 | #endif | |
457 | ||
34f04431 RS |
458 | /* If we support X Windows, turn on the code to poll periodically |
459 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 460 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
461 | #define POLL_FOR_INPUT |
462 | #endif | |
284f4730 JB |
463 | \f |
464 | /* Global variable declarations. */ | |
465 | ||
466 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
467 | void (*keyboard_init_hook) (); | |
468 | ||
469 | static int read_avail_input (); | |
470 | static void get_input_pending (); | |
9fd7d808 | 471 | static int readable_events (); |
8150596a RS |
472 | static Lisp_Object read_char_x_menu_prompt (); |
473 | static Lisp_Object read_char_minibuf_menu_prompt (); | |
a612e298 RS |
474 | static Lisp_Object make_lispy_event (); |
475 | static Lisp_Object make_lispy_movement (); | |
476 | static Lisp_Object modify_event_symbol (); | |
477 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
478 | |
479 | /* > 0 if we are to echo keystrokes. */ | |
480 | static int echo_keystrokes; | |
481 | ||
482 | /* Nonzero means echo each character as typed. */ | |
483 | static int immediate_echo; | |
484 | ||
485 | /* The text we're echoing in the modeline - partial key sequences, | |
f4255cd1 JB |
486 | usually. '\0'-terminated. This really shouldn't have a fixed size. */ |
487 | static char echobuf[300]; | |
284f4730 JB |
488 | |
489 | /* Where to append more text to echobuf if we want to. */ | |
490 | static char *echoptr; | |
491 | ||
7a80a6f6 RS |
492 | /* If we have echoed a prompt string specified by the user, |
493 | this is its length. Otherwise this is -1. */ | |
494 | static int echo_after_prompt; | |
495 | ||
8026024c KH |
496 | /* Nonzero means don't try to suspend even if the operating system seems |
497 | to support it. */ | |
498 | static int cannot_suspend; | |
499 | ||
284f4730 JB |
500 | #define min(a,b) ((a)<(b)?(a):(b)) |
501 | #define max(a,b) ((a)>(b)?(a):(b)) | |
502 | ||
503 | /* Install the string STR as the beginning of the string of echoing, | |
504 | so that it serves as a prompt for the next character. | |
505 | Also start echoing. */ | |
506 | ||
507 | echo_prompt (str) | |
508 | char *str; | |
509 | { | |
510 | int len = strlen (str); | |
7a80a6f6 | 511 | |
284f4730 JB |
512 | if (len > sizeof echobuf - 4) |
513 | len = sizeof echobuf - 4; | |
0a7f1fc0 | 514 | bcopy (str, echobuf, len); |
284f4730 | 515 | echoptr = echobuf + len; |
0a7f1fc0 | 516 | *echoptr = '\0'; |
284f4730 | 517 | |
7a80a6f6 RS |
518 | echo_after_prompt = len; |
519 | ||
284f4730 JB |
520 | echo (); |
521 | } | |
522 | ||
523 | /* Add C to the echo string, if echoing is going on. | |
524 | C can be a character, which is printed prettily ("M-C-x" and all that | |
525 | jazz), or a symbol, whose name is printed. */ | |
526 | ||
527 | echo_char (c) | |
528 | Lisp_Object c; | |
529 | { | |
530 | extern char *push_key_description (); | |
531 | ||
532 | if (immediate_echo) | |
533 | { | |
534 | char *ptr = echoptr; | |
535 | ||
536 | if (ptr != echobuf) | |
537 | *ptr++ = ' '; | |
538 | ||
539 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 540 | c = EVENT_HEAD (c); |
284f4730 JB |
541 | |
542 | if (XTYPE (c) == Lisp_Int) | |
543 | { | |
544 | if (ptr - echobuf > sizeof echobuf - 6) | |
545 | return; | |
546 | ||
cb5df6ae | 547 | ptr = push_key_description (XINT (c), ptr); |
284f4730 JB |
548 | } |
549 | else if (XTYPE (c) == Lisp_Symbol) | |
550 | { | |
551 | struct Lisp_String *name = XSYMBOL (c)->name; | |
552 | if (((ptr - echobuf) + name->size + 4) > sizeof echobuf) | |
553 | return; | |
554 | bcopy (name->data, ptr, name->size); | |
555 | ptr += name->size; | |
556 | } | |
557 | ||
7e85b935 | 558 | if (echoptr == echobuf && EQ (c, Vhelp_char)) |
284f4730 JB |
559 | { |
560 | strcpy (ptr, " (Type ? for further options)"); | |
561 | ptr += strlen (ptr); | |
562 | } | |
563 | ||
564 | *ptr = 0; | |
565 | echoptr = ptr; | |
566 | ||
567 | echo (); | |
568 | } | |
569 | } | |
570 | ||
571 | /* Temporarily add a dash to the end of the echo string if it's not | |
572 | empty, so that it serves as a mini-prompt for the very next character. */ | |
573 | ||
574 | echo_dash () | |
575 | { | |
576 | if (!immediate_echo && echoptr == echobuf) | |
577 | return; | |
7a80a6f6 | 578 | /* Do nothing if we just printed a prompt. */ |
7d637a0d | 579 | if (echo_after_prompt == echoptr - echobuf) |
7a80a6f6 | 580 | return; |
4bafa972 JB |
581 | /* Do nothing if not echoing at all. */ |
582 | if (echoptr == 0) | |
583 | return; | |
284f4730 JB |
584 | |
585 | /* Put a dash at the end of the buffer temporarily, | |
586 | but make it go away when the next character is added. */ | |
587 | echoptr[0] = '-'; | |
588 | echoptr[1] = 0; | |
589 | ||
590 | echo (); | |
591 | } | |
592 | ||
593 | /* Display the current echo string, and begin echoing if not already | |
594 | doing so. */ | |
595 | ||
596 | echo () | |
597 | { | |
598 | if (!immediate_echo) | |
599 | { | |
600 | int i; | |
601 | immediate_echo = 1; | |
602 | ||
603 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
604 | { |
605 | Lisp_Object c; | |
606 | c = XVECTOR (this_command_keys)->contents[i]; | |
607 | if (! (EVENT_HAS_PARAMETERS (c) | |
608 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
609 | echo_char (c); | |
610 | } | |
284f4730 JB |
611 | echo_dash (); |
612 | } | |
613 | ||
614 | echoing = 1; | |
615 | message1 (echobuf); | |
616 | echoing = 0; | |
617 | ||
618 | if (waiting_for_input && !NILP (Vquit_flag)) | |
619 | quit_throw_to_read_char (); | |
620 | } | |
621 | ||
622 | /* Turn off echoing, for the start of a new command. */ | |
623 | ||
624 | cancel_echoing () | |
625 | { | |
626 | immediate_echo = 0; | |
627 | echoptr = echobuf; | |
7a80a6f6 | 628 | echo_after_prompt = -1; |
284f4730 JB |
629 | } |
630 | ||
631 | /* Return the length of the current echo string. */ | |
632 | ||
633 | static int | |
634 | echo_length () | |
635 | { | |
636 | return echoptr - echobuf; | |
637 | } | |
638 | ||
639 | /* Truncate the current echo message to its first LEN chars. | |
640 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 641 | switches frames while entering a key sequence. */ |
284f4730 JB |
642 | |
643 | static void | |
644 | echo_truncate (len) | |
645 | int len; | |
646 | { | |
647 | echobuf[len] = '\0'; | |
0a7f1fc0 | 648 | echoptr = echobuf + len; |
40932d1a | 649 | truncate_echo_area (len); |
284f4730 JB |
650 | } |
651 | ||
652 | \f | |
653 | /* Functions for manipulating this_command_keys. */ | |
654 | static void | |
655 | add_command_key (key) | |
656 | Lisp_Object key; | |
657 | { | |
6569cc8d JB |
658 | int size = XVECTOR (this_command_keys)->size; |
659 | ||
660 | if (this_command_key_count >= size) | |
284f4730 | 661 | { |
9b8eb840 | 662 | Lisp_Object new_keys; |
6569cc8d | 663 | |
9b8eb840 | 664 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
665 | bcopy (XVECTOR (this_command_keys)->contents, |
666 | XVECTOR (new_keys)->contents, | |
8f805655 | 667 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
668 | |
669 | this_command_keys = new_keys; | |
284f4730 | 670 | } |
6569cc8d JB |
671 | |
672 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
673 | } |
674 | \f | |
675 | Lisp_Object | |
676 | recursive_edit_1 () | |
677 | { | |
678 | int count = specpdl_ptr - specpdl; | |
679 | Lisp_Object val; | |
680 | ||
681 | if (command_loop_level > 0) | |
682 | { | |
683 | specbind (Qstandard_output, Qt); | |
684 | specbind (Qstandard_input, Qt); | |
685 | } | |
686 | ||
687 | val = command_loop (); | |
688 | if (EQ (val, Qt)) | |
689 | Fsignal (Qquit, Qnil); | |
690 | ||
cb5df6ae | 691 | return unbind_to (count, Qnil); |
284f4730 JB |
692 | } |
693 | ||
694 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 695 | |
284f4730 JB |
696 | record_auto_save () |
697 | { | |
51172b6d | 698 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 699 | } |
5846638c RS |
700 | |
701 | /* Make an auto save happen as soon as possible at command level. */ | |
702 | ||
703 | force_auto_save_soon () | |
704 | { | |
705 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
706 | |
707 | record_asynch_buffer_change (); | |
5846638c | 708 | } |
284f4730 | 709 | \f |
284f4730 JB |
710 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
711 | "Invoke the editor command loop recursively.\n\ | |
712 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
713 | that tells this function to return.\n\ | |
714 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
715 | This function is called by the editor initialization to begin editing.") | |
716 | () | |
717 | { | |
718 | int count = specpdl_ptr - specpdl; | |
719 | Lisp_Object val; | |
720 | ||
721 | command_loop_level++; | |
722 | update_mode_lines = 1; | |
723 | ||
724 | record_unwind_protect (recursive_edit_unwind, | |
725 | (command_loop_level | |
726 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
727 | ? Fcurrent_buffer () | |
728 | : Qnil); | |
729 | recursive_edit_1 (); | |
730 | return unbind_to (count, Qnil); | |
731 | } | |
732 | ||
733 | Lisp_Object | |
734 | recursive_edit_unwind (buffer) | |
735 | Lisp_Object buffer; | |
736 | { | |
737 | if (!NILP (buffer)) | |
738 | Fset_buffer (buffer); | |
739 | ||
740 | command_loop_level--; | |
741 | update_mode_lines = 1; | |
742 | return Qnil; | |
743 | } | |
744 | \f | |
745 | Lisp_Object | |
746 | cmd_error (data) | |
747 | Lisp_Object data; | |
748 | { | |
749 | Lisp_Object errmsg, tail, errname, file_error; | |
750 | Lisp_Object stream; | |
751 | struct gcpro gcpro1; | |
752 | int i; | |
753 | ||
754 | Vquit_flag = Qnil; | |
755 | Vinhibit_quit = Qt; | |
756 | Vstandard_output = Qt; | |
757 | Vstandard_input = Qt; | |
758 | Vexecuting_macro = Qnil; | |
759 | echo_area_glyphs = 0; | |
760 | ||
ff11dfa1 | 761 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
762 | yet, or we're not interactive, it's best to dump this message out |
763 | to stderr and exit. */ | |
ff11dfa1 | 764 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
765 | || noninteractive) |
766 | stream = Qexternal_debugging_output; | |
767 | else | |
768 | { | |
769 | Fdiscard_input (); | |
770 | bitch_at_user (); | |
771 | stream = Qt; | |
772 | } | |
773 | ||
774 | errname = Fcar (data); | |
775 | ||
776 | if (EQ (errname, Qerror)) | |
777 | { | |
778 | data = Fcdr (data); | |
779 | if (!CONSP (data)) data = Qnil; | |
780 | errmsg = Fcar (data); | |
781 | file_error = Qnil; | |
782 | } | |
783 | else | |
784 | { | |
785 | errmsg = Fget (errname, Qerror_message); | |
786 | file_error = Fmemq (Qfile_error, | |
787 | Fget (errname, Qerror_conditions)); | |
788 | } | |
789 | ||
790 | /* Print an error message including the data items. | |
791 | This is done by printing it into a scratch buffer | |
792 | and then making a copy of the text in the buffer. */ | |
793 | ||
794 | if (!CONSP (data)) data = Qnil; | |
795 | tail = Fcdr (data); | |
796 | GCPRO1 (tail); | |
797 | ||
798 | /* For file-error, make error message by concatenating | |
799 | all the data items. They are all strings. */ | |
800 | if (!NILP (file_error) && !NILP (tail)) | |
801 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
802 | ||
803 | if (XTYPE (errmsg) == Lisp_String) | |
804 | Fprinc (errmsg, stream); | |
805 | else | |
806 | write_string_1 ("peculiar error", -1, stream); | |
807 | ||
808 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
809 | { | |
810 | write_string_1 (i ? ", " : ": ", 2, stream); | |
811 | if (!NILP (file_error)) | |
812 | Fprinc (Fcar (tail), stream); | |
813 | else | |
814 | Fprin1 (Fcar (tail), stream); | |
815 | } | |
816 | UNGCPRO; | |
817 | ||
ff11dfa1 | 818 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 819 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 820 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
821 | || noninteractive) |
822 | { | |
823 | Fterpri (stream); | |
824 | Fkill_emacs (make_number (-1)); | |
825 | } | |
826 | ||
827 | Vquit_flag = Qnil; | |
828 | ||
829 | Vinhibit_quit = Qnil; | |
830 | return make_number (0); | |
831 | } | |
832 | \f | |
833 | Lisp_Object command_loop_1 (); | |
834 | Lisp_Object command_loop_2 (); | |
835 | Lisp_Object top_level_1 (); | |
836 | ||
837 | /* Entry to editor-command-loop. | |
838 | This level has the catches for exiting/returning to editor command loop. | |
839 | It returns nil to exit recursive edit, t to abort it. */ | |
840 | ||
841 | Lisp_Object | |
842 | command_loop () | |
843 | { | |
844 | if (command_loop_level > 0 || minibuf_level > 0) | |
845 | { | |
846 | return internal_catch (Qexit, command_loop_2, Qnil); | |
847 | } | |
848 | else | |
849 | while (1) | |
850 | { | |
851 | internal_catch (Qtop_level, top_level_1, Qnil); | |
852 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
853 | ||
854 | /* End of file in -batch run causes exit here. */ | |
855 | if (noninteractive) | |
856 | Fkill_emacs (Qt); | |
857 | } | |
858 | } | |
859 | ||
860 | /* Here we catch errors in execution of commands within the | |
861 | editing loop, and reenter the editing loop. | |
862 | When there is an error, cmd_error runs and returns a non-nil | |
863 | value to us. A value of nil means that cmd_loop_1 itself | |
864 | returned due to end of file (or end of kbd macro). */ | |
865 | ||
866 | Lisp_Object | |
867 | command_loop_2 () | |
868 | { | |
869 | register Lisp_Object val; | |
870 | ||
871 | do | |
872 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
873 | while (!NILP (val)); | |
874 | ||
875 | return Qnil; | |
876 | } | |
877 | ||
878 | Lisp_Object | |
879 | top_level_2 () | |
880 | { | |
881 | return Feval (Vtop_level); | |
882 | } | |
883 | ||
884 | Lisp_Object | |
885 | top_level_1 () | |
886 | { | |
887 | /* On entry to the outer level, run the startup file */ | |
888 | if (!NILP (Vtop_level)) | |
889 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
890 | else if (!NILP (Vpurify_flag)) | |
891 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
892 | else | |
893 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
894 | return Qnil; | |
895 | } | |
896 | ||
897 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
898 | "Exit all recursive editing levels.") | |
899 | () | |
900 | { | |
901 | Fthrow (Qtop_level, Qnil); | |
902 | } | |
903 | ||
904 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
905 | "Exit from the innermost recursive edit or minibuffer.") | |
906 | () | |
907 | { | |
908 | if (command_loop_level > 0 || minibuf_level > 0) | |
909 | Fthrow (Qexit, Qnil); | |
910 | ||
911 | error ("No recursive edit is in progress"); | |
912 | } | |
913 | ||
914 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
915 | "Abort the command that requested this recursive edit or minibuffer input.") | |
916 | () | |
917 | { | |
918 | if (command_loop_level > 0 || minibuf_level > 0) | |
919 | Fthrow (Qexit, Qt); | |
920 | ||
921 | error ("No recursive edit is in progress"); | |
922 | } | |
923 | \f | |
924 | /* This is the actual command reading loop, | |
925 | sans error-handling encapsulation. */ | |
926 | ||
927 | Lisp_Object Fcommand_execute (); | |
928 | static int read_key_sequence (); | |
1c9784c9 | 929 | static void safe_run_hooks (); |
284f4730 JB |
930 | |
931 | Lisp_Object | |
932 | command_loop_1 () | |
933 | { | |
48e416d4 | 934 | Lisp_Object cmd, tem; |
284f4730 JB |
935 | int lose; |
936 | int nonundocount; | |
937 | Lisp_Object keybuf[30]; | |
938 | int i; | |
939 | int no_redisplay; | |
940 | int no_direct; | |
86e5706b RS |
941 | int prev_modiff; |
942 | struct buffer *prev_buffer; | |
284f4730 JB |
943 | |
944 | Vprefix_arg = Qnil; | |
86e5706b | 945 | Vdeactivate_mark = Qnil; |
284f4730 JB |
946 | waiting_for_input = 0; |
947 | cancel_echoing (); | |
948 | ||
284f4730 JB |
949 | nonundocount = 0; |
950 | no_redisplay = 0; | |
951 | this_command_key_count = 0; | |
952 | ||
a612e298 RS |
953 | /* Make sure this hook runs after commands that get errors and |
954 | throw to top level. */ | |
a98ea3f9 RS |
955 | /* Note that the value cell will never directly contain nil |
956 | if the symbol is a local variable. */ | |
957 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
958 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 959 | |
51d5a2c9 RS |
960 | /* Do this after running Vpost_command_hook, for consistency. */ |
961 | last_command = this_command; | |
962 | ||
284f4730 JB |
963 | while (1) |
964 | { | |
965 | /* Install chars successfully executed in kbd macro. */ | |
966 | ||
967 | if (defining_kbd_macro && NILP (Vprefix_arg)) | |
968 | finalize_kbd_macro_chars (); | |
969 | ||
970 | /* Make sure the current window's buffer is selected. */ | |
971 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
972 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
973 | ||
974 | /* Display any malloc warning that just came out. Use while because | |
975 | displaying one warning can cause another. */ | |
976 | ||
977 | while (pending_malloc_warning) | |
978 | display_malloc_warning (); | |
979 | ||
980 | no_direct = 0; | |
981 | ||
86e5706b RS |
982 | Vdeactivate_mark = Qnil; |
983 | ||
284f4730 | 984 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 985 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
986 | |
987 | if (minibuf_level && echo_area_glyphs) | |
988 | { | |
f1bed6d8 RS |
989 | /* Bind inhibit-quit to t so that C-g gets read in |
990 | rather than quitting back to the minibuffer. */ | |
991 | int count = specpdl_ptr - specpdl; | |
992 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 993 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 994 | unbind_to (count, Qnil); |
f1bed6d8 | 995 | |
284f4730 JB |
996 | echo_area_glyphs = 0; |
997 | no_direct = 1; | |
998 | if (!NILP (Vquit_flag)) | |
999 | { | |
1000 | Vquit_flag = Qnil; | |
24597608 | 1001 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1002 | } |
1003 | } | |
1004 | ||
1005 | #ifdef C_ALLOCA | |
1006 | alloca (0); /* Cause a garbage collection now */ | |
1007 | /* Since we can free the most stuff here. */ | |
1008 | #endif /* C_ALLOCA */ | |
1009 | ||
8f805655 | 1010 | #if 0 |
ff11dfa1 | 1011 | #ifdef MULTI_FRAME |
8f805655 JB |
1012 | /* Select the frame that the last event came from. Usually, |
1013 | switch-frame events will take care of this, but if some lisp | |
1014 | code swallows a switch-frame event, we'll fix things up here. | |
1015 | Is this a good idea? */ | |
3c370943 JB |
1016 | if (XTYPE (internal_last_event_frame) == Lisp_Frame |
1017 | && XFRAME (internal_last_event_frame) != selected_frame) | |
1018 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1019 | #endif |
284f4730 | 1020 | #endif |
48e416d4 RS |
1021 | /* If it has changed current-menubar from previous value, |
1022 | really recompute the menubar from the value. */ | |
a646e520 RS |
1023 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1024 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1025 | call0 (Qrecompute_lucid_menubar); |
1026 | ||
8f805655 | 1027 | /* Read next key sequence; i gets its length. */ |
84d91fda | 1028 | i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), Qnil); |
8f805655 JB |
1029 | |
1030 | ++num_input_keys; | |
1031 | ||
284f4730 JB |
1032 | /* Now we have read a key sequence of length I, |
1033 | or else I is 0 and we found end of file. */ | |
1034 | ||
1035 | if (i == 0) /* End of file -- happens only in */ | |
1036 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1037 | /* -1 means read_key_sequence got a menu that was rejected. |
1038 | Just loop around and read another command. */ | |
1039 | if (i == -1) | |
1040 | { | |
1041 | cancel_echoing (); | |
1042 | this_command_key_count = 0; | |
1043 | continue; | |
1044 | } | |
284f4730 | 1045 | |
284f4730 JB |
1046 | last_command_char = keybuf[i - 1]; |
1047 | ||
75c0b143 RS |
1048 | /* If the previous command tried to force a specific window-start, |
1049 | forget about that, in case this command moves point far away | |
1050 | from that position. */ | |
1051 | XWINDOW (selected_window)->force_start = Qnil; | |
1052 | ||
284f4730 JB |
1053 | cmd = read_key_sequence_cmd; |
1054 | if (!NILP (Vexecuting_macro)) | |
1055 | { | |
1056 | if (!NILP (Vquit_flag)) | |
1057 | { | |
1058 | Vexecuting_macro = Qt; | |
1059 | QUIT; /* Make some noise. */ | |
1060 | /* Will return since macro now empty. */ | |
1061 | } | |
1062 | } | |
1063 | ||
1064 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1065 | cases identified below that set no_redisplay to 1. |
1066 | (actually, there's currently no way to prevent the redisplay, | |
1067 | and no_redisplay is ignored. | |
1068 | Perhaps someday we will really implement it. */ | |
284f4730 JB |
1069 | no_redisplay = 0; |
1070 | ||
86e5706b RS |
1071 | prev_buffer = current_buffer; |
1072 | prev_modiff = MODIFF; | |
8746da95 | 1073 | last_point_position = PT; |
047688cb | 1074 | XSET (last_point_position_buffer, Lisp_Buffer, prev_buffer); |
86e5706b | 1075 | |
284f4730 JB |
1076 | /* Execute the command. */ |
1077 | ||
86e5706b | 1078 | this_command = cmd; |
a98ea3f9 RS |
1079 | /* Note that the value cell will never directly contain nil |
1080 | if the symbol is a local variable. */ | |
1081 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1082 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1083 | |
258bf746 | 1084 | if (NILP (this_command)) |
284f4730 JB |
1085 | { |
1086 | /* nil means key is undefined. */ | |
1087 | bitch_at_user (); | |
1088 | defining_kbd_macro = 0; | |
1089 | update_mode_lines = 1; | |
1090 | Vprefix_arg = Qnil; | |
86e5706b | 1091 | |
284f4730 JB |
1092 | } |
1093 | else | |
1094 | { | |
284f4730 JB |
1095 | if (NILP (Vprefix_arg) && ! no_direct) |
1096 | { | |
1097 | /* Recognize some common commands in common situations and | |
1098 | do them directly. */ | |
8001d352 | 1099 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1100 | { |
1101 | struct Lisp_Vector *dp | |
1102 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1103 | lose = FETCH_CHAR (PT); |
1104 | SET_PT (PT + 1); | |
0f7a8fee | 1105 | if ((dp |
82ba47d7 | 1106 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1107 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1108 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1109 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1110 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1111 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1112 | >= MODIFF) | |
1113 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1114 | == PT - 1) |
284f4730 JB |
1115 | && !windows_or_buffers_changed |
1116 | && EQ (current_buffer->selective_display, Qnil) | |
1117 | && !detect_input_pending () | |
1118 | && NILP (Vexecuting_macro)) | |
1119 | no_redisplay = direct_output_forward_char (1); | |
1120 | goto directly_done; | |
1121 | } | |
8001d352 | 1122 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1123 | { |
1124 | struct Lisp_Vector *dp | |
1125 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1126 | SET_PT (PT - 1); |
1127 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1128 | if ((dp |
ca873d73 | 1129 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1130 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1131 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1132 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1133 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1134 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1135 | >= MODIFF) | |
1136 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1137 | == PT + 1) |
284f4730 JB |
1138 | && !windows_or_buffers_changed |
1139 | && EQ (current_buffer->selective_display, Qnil) | |
1140 | && !detect_input_pending () | |
1141 | && NILP (Vexecuting_macro)) | |
1142 | no_redisplay = direct_output_forward_char (-1); | |
1143 | goto directly_done; | |
1144 | } | |
258bf746 | 1145 | else if (EQ (this_command, Qself_insert_command) |
284f4730 JB |
1146 | /* Try this optimization only on ascii keystrokes. */ |
1147 | && XTYPE (last_command_char) == Lisp_Int) | |
1148 | { | |
1149 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1150 | int value; |
284f4730 | 1151 | |
fc9cce4e RS |
1152 | if (NILP (Vexecuting_macro) |
1153 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1154 | { |
1155 | if (!nonundocount || nonundocount >= 20) | |
1156 | { | |
1157 | Fundo_boundary (); | |
1158 | nonundocount = 0; | |
1159 | } | |
1160 | nonundocount++; | |
1161 | } | |
fc9cce4e RS |
1162 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1163 | < MODIFF) | |
1164 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1165 | != PT) | |
1166 | || MODIFF <= current_buffer->save_modified | |
1167 | || windows_or_buffers_changed | |
1168 | || !EQ (current_buffer->selective_display, Qnil) | |
1169 | || detect_input_pending () | |
1170 | || !NILP (Vexecuting_macro)); | |
1171 | value = internal_self_insert (c, 0); | |
1172 | if (value) | |
1173 | lose = 1; | |
1174 | if (value == 2) | |
1175 | nonundocount = 0; | |
1176 | ||
1177 | if (!lose | |
1178 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1179 | { |
1180 | struct Lisp_Vector *dp | |
1181 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1182 | int lose = c; |
284f4730 | 1183 | |
0f7a8fee JB |
1184 | if (dp) |
1185 | { | |
9b8eb840 | 1186 | Lisp_Object obj; |
0f7a8fee | 1187 | |
9b8eb840 | 1188 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1189 | if (NILP (obj)) |
8e91f441 RS |
1190 | { |
1191 | /* Do it only for char codes | |
1192 | that by default display as themselves. */ | |
1193 | if (lose >= 0x20 && lose <= 0x7e) | |
1194 | no_redisplay = direct_output_for_insert (lose); | |
1195 | } | |
054c8675 RS |
1196 | else if (XTYPE (obj) == Lisp_Vector |
1197 | && XVECTOR (obj)->size == 1 | |
1198 | && (XTYPE (obj = XVECTOR (obj)->contents[0]) | |
1199 | == Lisp_Int) | |
1200 | /* Insist face not specified in glyph. */ | |
1201 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1202 | no_redisplay |
1203 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1204 | } |
1205 | else | |
1206 | { | |
1207 | if (lose >= 0x20 && lose <= 0x7e) | |
1208 | no_redisplay = direct_output_for_insert (lose); | |
1209 | } | |
284f4730 JB |
1210 | } |
1211 | goto directly_done; | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | /* Here for a command that isn't executed directly */ | |
1216 | ||
1217 | nonundocount = 0; | |
1218 | if (NILP (Vprefix_arg)) | |
1219 | Fundo_boundary (); | |
258bf746 | 1220 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1221 | |
284f4730 | 1222 | } |
a764a753 | 1223 | directly_done: ; |
284f4730 | 1224 | |
a98ea3f9 RS |
1225 | /* Note that the value cell will never directly contain nil |
1226 | if the symbol is a local variable. */ | |
1227 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1228 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1229 | |
284f4730 JB |
1230 | /* If there is a prefix argument, |
1231 | 1) We don't want last_command to be ``universal-argument'' | |
1232 | (that would be dumb), so don't set last_command, | |
1233 | 2) we want to leave echoing on so that the prefix will be | |
1234 | echoed as part of this key sequence, so don't call | |
1235 | cancel_echoing, and | |
1236 | 3) we want to leave this_command_key_count non-zero, so that | |
1237 | read_char will realize that it is re-reading a character, and | |
1238 | not echo it a second time. */ | |
1239 | if (NILP (Vprefix_arg)) | |
1240 | { | |
1241 | last_command = this_command; | |
1242 | cancel_echoing (); | |
1243 | this_command_key_count = 0; | |
1244 | } | |
86e5706b | 1245 | |
88ce066e | 1246 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1247 | { |
1248 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1249 | { | |
1250 | current_buffer->mark_active = Qnil; | |
1251 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1252 | } | |
1253 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1254 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1255 | } | |
284f4730 JB |
1256 | } |
1257 | } | |
1c9784c9 KH |
1258 | |
1259 | /* If we get an error while running the hook, cause the hook variable | |
1260 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1261 | to mysteriously evaporate. */ | |
1262 | static void | |
1263 | safe_run_hooks (hook) | |
a98ea3f9 | 1264 | Lisp_Object hook; |
1c9784c9 | 1265 | { |
68553292 | 1266 | Lisp_Object value; |
1c9784c9 KH |
1267 | int count = specpdl_ptr - specpdl; |
1268 | specbind (Qinhibit_quit, Qt); | |
1269 | ||
a98ea3f9 RS |
1270 | /* We read and set the variable with functions, |
1271 | in case it's buffer-local. */ | |
68553292 | 1272 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1273 | Fset (hook, Qnil); |
1c9784c9 | 1274 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1275 | Fset (hook, value); |
1c9784c9 KH |
1276 | |
1277 | unbind_to (count, Qnil); | |
1278 | } | |
284f4730 JB |
1279 | \f |
1280 | /* Number of seconds between polling for input. */ | |
1281 | int polling_period; | |
1282 | ||
eb8c3be9 | 1283 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1284 | int poll_suppress_count; |
1285 | ||
1286 | #ifdef POLL_FOR_INPUT | |
1287 | int polling_for_input; | |
1288 | ||
1289 | /* Handle an alarm once each second and read pending input | |
1290 | so as to handle a C-g if it comces in. */ | |
1291 | ||
1292 | SIGTYPE | |
1293 | input_poll_signal () | |
1294 | { | |
9ac0d9e0 JB |
1295 | if (interrupt_input_blocked == 0 |
1296 | && !waiting_for_input) | |
1297 | read_avail_input (0); | |
284f4730 JB |
1298 | signal (SIGALRM, input_poll_signal); |
1299 | alarm (polling_period); | |
1300 | } | |
1301 | ||
1302 | #endif | |
1303 | ||
1304 | /* Begin signals to poll for input, if they are appropriate. | |
1305 | This function is called unconditionally from various places. */ | |
1306 | ||
1307 | start_polling () | |
1308 | { | |
1309 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1310 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1311 | { |
1312 | poll_suppress_count--; | |
1313 | if (poll_suppress_count == 0) | |
1314 | { | |
1315 | signal (SIGALRM, input_poll_signal); | |
1316 | polling_for_input = 1; | |
1317 | alarm (polling_period); | |
1318 | } | |
1319 | } | |
1320 | #endif | |
1321 | } | |
1322 | ||
1323 | /* Turn off polling. */ | |
1324 | ||
1325 | stop_polling () | |
1326 | { | |
1327 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1328 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1329 | { |
1330 | if (poll_suppress_count == 0) | |
1331 | { | |
1332 | polling_for_input = 0; | |
1333 | alarm (0); | |
1334 | } | |
1335 | poll_suppress_count++; | |
1336 | } | |
1337 | #endif | |
1338 | } | |
fe8aeef3 RS |
1339 | |
1340 | /* Set the value of poll_suppress_count to COUNT | |
1341 | and start or stop polling accordingly. */ | |
1342 | ||
1343 | void | |
1344 | set_poll_suppress_count (count) | |
1345 | int count; | |
1346 | { | |
1347 | #ifdef POLL_FOR_INPUT | |
1348 | if (count == 0 && poll_suppress_count != 0) | |
1349 | { | |
1350 | poll_suppress_count = 1; | |
1351 | start_polling (); | |
1352 | } | |
1353 | else if (count != 0 && poll_suppress_count == 0) | |
1354 | { | |
1355 | stop_polling (); | |
1356 | } | |
1357 | poll_suppress_count = count; | |
1358 | #endif | |
1359 | } | |
f4eef8b4 | 1360 | |
d0a57728 RS |
1361 | /* Bind polling_period to a value at least N. |
1362 | But don't decrease it. */ | |
1363 | ||
f4eef8b4 RS |
1364 | bind_polling_period (n) |
1365 | int n; | |
1366 | { | |
1367 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1368 | int new = polling_period; |
1369 | ||
1370 | if (n > new) | |
1371 | new = n; | |
1372 | ||
f4eef8b4 | 1373 | stop_polling (); |
d0a57728 RS |
1374 | specbind (Qpolling_period, make_number (new)); |
1375 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1376 | start_polling (); |
1377 | #endif | |
1378 | } | |
284f4730 | 1379 | \f |
faf5e407 JB |
1380 | /* Applying the control modifier to CHARACTER. */ |
1381 | int | |
1382 | make_ctrl_char (c) | |
1383 | int c; | |
1384 | { | |
d205953b JB |
1385 | /* Save the upper bits here. */ |
1386 | int upper = c & ~0177; | |
1387 | ||
1388 | c &= 0177; | |
1389 | ||
1390 | /* Everything in the columns containing the upper-case letters | |
1391 | denotes a control character. */ | |
1392 | if (c >= 0100 && c < 0140) | |
1393 | { | |
1394 | int oc = c; | |
1395 | c &= ~0140; | |
1396 | /* Set the shift modifier for a control char | |
1397 | made from a shifted letter. But only for letters! */ | |
1398 | if (oc >= 'A' && oc <= 'Z') | |
1399 | c |= shift_modifier; | |
1400 | } | |
1401 | ||
1402 | /* The lower-case letters denote control characters too. */ | |
1403 | else if (c >= 'a' && c <= 'z') | |
1404 | c &= ~0140; | |
1405 | ||
1406 | /* Include the bits for control and shift | |
1407 | only if the basic ASCII code can't indicate them. */ | |
1408 | else if (c >= ' ') | |
1409 | c |= ctrl_modifier; | |
1410 | ||
1411 | /* Replace the high bits. */ | |
1412 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1413 | |
1414 | return c; | |
1415 | } | |
1416 | ||
1417 | ||
1418 | \f | |
284f4730 JB |
1419 | /* Input of single characters from keyboard */ |
1420 | ||
1421 | Lisp_Object print_help (); | |
1422 | static Lisp_Object kbd_buffer_get_event (); | |
1423 | ||
1424 | /* read a character from the keyboard; call the redisplay if needed */ | |
1425 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1426 | -1 means do not do redisplay, but do do autosaving. | |
1427 | 1 means do both. */ | |
1428 | ||
7d6de002 RS |
1429 | /* The arguments MAPS and NMAPS are for menu prompting. |
1430 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1431 | ||
1432 | PREV_EVENT is the previous input event, or nil if we are reading | |
1433 | the first event of a key sequence. | |
1434 | ||
6569cc8d JB |
1435 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1436 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1437 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1438 | ||
1439 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1440 | |
284f4730 | 1441 | Lisp_Object |
7d6de002 | 1442 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1443 | int commandflag; |
7d6de002 RS |
1444 | int nmaps; |
1445 | Lisp_Object *maps; | |
1446 | Lisp_Object prev_event; | |
1447 | int *used_mouse_menu; | |
284f4730 JB |
1448 | { |
1449 | register Lisp_Object c; | |
1450 | int count; | |
1451 | jmp_buf save_jump; | |
1452 | ||
24597608 | 1453 | if (CONSP (Vunread_command_events)) |
284f4730 | 1454 | { |
24597608 RS |
1455 | c = XCONS (Vunread_command_events)->car; |
1456 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1457 | |
284f4730 JB |
1458 | if (this_command_key_count == 0) |
1459 | goto reread_first; | |
1460 | else | |
1461 | goto reread; | |
1462 | } | |
1463 | ||
86e5706b RS |
1464 | if (unread_command_char != -1) |
1465 | { | |
1466 | XSET (c, Lisp_Int, unread_command_char); | |
1467 | unread_command_char = -1; | |
1468 | ||
1469 | if (this_command_key_count == 0) | |
1470 | goto reread_first; | |
1471 | else | |
1472 | goto reread; | |
1473 | } | |
1474 | ||
284f4730 JB |
1475 | if (!NILP (Vexecuting_macro)) |
1476 | { | |
07d2b8de | 1477 | #ifdef MULTI_FRAME |
fce33686 JB |
1478 | /* We set this to Qmacro; since that's not a frame, nobody will |
1479 | try to switch frames on us, and the selected window will | |
1480 | remain unchanged. | |
1481 | ||
1482 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1483 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1484 | real event came from. Normally, a switch-frame event selects |
1485 | internal_last_event_frame after each command is read, but | |
1486 | events read from a macro should never cause a new frame to be | |
1487 | selected. */ | |
1488 | Vlast_event_frame = internal_last_event_frame = Qmacro; | |
07d2b8de | 1489 | #endif |
fce33686 | 1490 | |
663258f2 JB |
1491 | /* Exit the macro if we are at the end. |
1492 | Also, some things replace the macro with t | |
1493 | to force an early exit. */ | |
1494 | if (EQ (Vexecuting_macro, Qt) | |
1495 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 JB |
1496 | { |
1497 | XSET (c, Lisp_Int, -1); | |
1498 | return c; | |
1499 | } | |
1500 | ||
1501 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
86e5706b RS |
1502 | if (XTYPE (Vexecuting_macro) == Lisp_String |
1503 | && (XINT (c) & 0x80)) | |
1504 | XFASTINT (c) = CHAR_META | (XINT (c) & ~0x80); | |
1505 | ||
284f4730 JB |
1506 | executing_macro_index++; |
1507 | ||
1508 | goto from_macro; | |
1509 | } | |
1510 | ||
cd21b839 JB |
1511 | if (!NILP (unread_switch_frame)) |
1512 | { | |
1513 | c = unread_switch_frame; | |
1514 | unread_switch_frame = Qnil; | |
1515 | ||
1516 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1517 | again, so we go to reread_first, rather than reread. */ |
1518 | goto reread_first; | |
cd21b839 JB |
1519 | } |
1520 | ||
3f9929bf RS |
1521 | /* Don't bother updating menu bars while doing mouse tracking. |
1522 | We get events very rapidly then, and the menu bar won't be changing. | |
1523 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1524 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1525 | prepare_menu_bars (); |
1526 | ||
284f4730 | 1527 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1528 | save_getcjmp (save_jump); |
284f4730 JB |
1529 | |
1530 | stop_polling (); | |
1531 | ||
1532 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1533 | redisplay (); | |
1534 | ||
1535 | if (_setjmp (getcjmp)) | |
1536 | { | |
1537 | XSET (c, Lisp_Int, quit_char); | |
07d2b8de | 1538 | #ifdef MULTI_FRAME |
3c370943 JB |
1539 | XSET (internal_last_event_frame, Lisp_Frame, selected_frame); |
1540 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1541 | #endif |
04904c29 RS |
1542 | /* If we report the quit char as an event, |
1543 | don't do so more than once. */ | |
1544 | if (!NILP (Vinhibit_quit)) | |
1545 | Vquit_flag = Qnil; | |
284f4730 | 1546 | |
284f4730 JB |
1547 | goto non_reread; |
1548 | } | |
1549 | ||
1550 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1551 | if (echo_area_glyphs && *echo_area_glyphs && echo_area_glyphs != echobuf) | |
1552 | cancel_echoing (); | |
1553 | else | |
1554 | /* If already echoing, continue. */ | |
1555 | echo_dash (); | |
1556 | ||
8150596a RS |
1557 | /* Try reading a character via menu prompting in the minibuf. |
1558 | Try this before the sit-for, because the sit-for | |
1559 | would do the wrong thing if we are supposed to do | |
1560 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1561 | after a mouse event so don't try a minibuf menu. */ | |
1562 | c = Qnil; | |
24597608 RS |
1563 | if (nmaps > 0 && INTERACTIVE |
1564 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1565 | /* Don't bring up a menu if we already have another event. */ | |
1566 | && NILP (Vunread_command_events) | |
1567 | && unread_command_char < 0 | |
b8556aee | 1568 | && !detect_input_pending ()) |
8150596a RS |
1569 | { |
1570 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 RS |
1571 | if (! NILP (c)) |
1572 | return c; | |
8150596a RS |
1573 | } |
1574 | ||
284f4730 JB |
1575 | /* If in middle of key sequence and minibuffer not active, |
1576 | start echoing if enough time elapses. */ | |
1577 | if (minibuf_level == 0 && !immediate_echo && this_command_key_count > 0 | |
27203ead | 1578 | && ! noninteractive |
284f4730 JB |
1579 | && echo_keystrokes > 0 |
1580 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1581 | { | |
1582 | Lisp_Object tem0; | |
1583 | ||
7d6de002 RS |
1584 | /* After a mouse event, start echoing right away. |
1585 | This is because we are probably about to display a menu, | |
1586 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1587 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1588 | echo (); |
7d6de002 RS |
1589 | else |
1590 | { | |
1591 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1592 | if (EQ (tem0, Qt)) | |
1593 | echo (); | |
1594 | } | |
284f4730 JB |
1595 | } |
1596 | ||
1597 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1598 | ||
1599 | if (commandflag != 0 | |
1600 | && auto_save_interval > 0 | |
51172b6d | 1601 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1602 | && !detect_input_pending ()) |
1603 | { | |
1604 | jmp_buf temp; | |
1605 | save_getcjmp (temp); | |
1606 | Fdo_auto_save (Qnil, Qnil); | |
1607 | restore_getcjmp (temp); | |
1608 | } | |
1609 | ||
8150596a | 1610 | /* Try reading using an X menu. |
24597608 RS |
1611 | This is never confused with reading using the minibuf |
1612 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1613 | does not pass on any keymaps. */ | |
1614 | if (nmaps > 0 && INTERACTIVE | |
1615 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1616 | /* Don't bring up a menu if we already have another event. */ | |
1617 | && NILP (Vunread_command_events) | |
b8556aee | 1618 | && unread_command_char < 0) |
8150596a | 1619 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1620 | |
284f4730 JB |
1621 | /* Slow down auto saves logarithmically in size of current buffer, |
1622 | and garbage collect while we're at it. */ | |
26c1639e | 1623 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1624 | { |
1625 | int delay_level, buffer_size; | |
1626 | ||
1627 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1628 | last_non_minibuf_size = Z - BEG; | |
1629 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1630 | delay_level = 0; | |
1631 | while (buffer_size > 64) | |
1632 | delay_level++, buffer_size -= buffer_size >> 2; | |
1633 | if (delay_level < 4) delay_level = 4; | |
1634 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1635 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1636 | ||
1637 | /* Auto save if enough time goes by without input. */ | |
1638 | if (commandflag != 0 | |
51172b6d | 1639 | && num_nonmacro_input_chars > last_auto_save |
7d6de002 RS |
1640 | && XTYPE (Vauto_save_timeout) == Lisp_Int |
1641 | && XINT (Vauto_save_timeout) > 0) | |
1642 | { | |
1643 | Lisp_Object tem0; | |
1644 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1645 | tem0 = sit_for (delay, 0, 1, 1); | |
1646 | if (EQ (tem0, Qt)) | |
1647 | { | |
1648 | jmp_buf temp; | |
1649 | save_getcjmp (temp); | |
1650 | Fdo_auto_save (Qnil, Qnil); | |
1651 | restore_getcjmp (temp); | |
1652 | ||
1653 | /* If we have auto-saved and there is still no input | |
1654 | available, garbage collect if there has been enough | |
1655 | consing going on to make it worthwhile. */ | |
1656 | if (!detect_input_pending () | |
1657 | && consing_since_gc > gc_cons_threshold / 2) | |
7e85b935 RS |
1658 | { |
1659 | Fgarbage_collect (); | |
e9bf89a0 RS |
1660 | /* prepare_menu_bars isn't safe here, but it should |
1661 | also be unnecessary. */ | |
7e85b935 RS |
1662 | redisplay (); |
1663 | } | |
7d6de002 RS |
1664 | } |
1665 | } | |
1666 | } | |
284f4730 JB |
1667 | |
1668 | /* Actually read a character, waiting if necessary. */ | |
4eb4f926 | 1669 | while (NILP (c)) |
1e12dd87 RS |
1670 | { |
1671 | c = kbd_buffer_get_event (); | |
1672 | if (!NILP (c)) | |
1673 | break; | |
1674 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
cd72760c RS |
1675 | { |
1676 | prepare_menu_bars (); | |
1677 | redisplay (); | |
1678 | } | |
1e12dd87 | 1679 | } |
284f4730 | 1680 | |
284f4730 | 1681 | /* Terminate Emacs in batch mode if at eof. */ |
7d6de002 | 1682 | if (noninteractive && XTYPE (c) == Lisp_Int && XINT (c) < 0) |
284f4730 JB |
1683 | Fkill_emacs (make_number (1)); |
1684 | ||
80645119 JB |
1685 | if (XTYPE (c) == Lisp_Int) |
1686 | { | |
1687 | /* Add in any extra modifiers, where appropriate. */ | |
1688 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1689 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1690 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1691 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1692 | |
1693 | /* Transfer any other modifier bits directly from | |
1694 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1695 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1696 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1697 | } |
9fa4395d | 1698 | |
284f4730 JB |
1699 | non_reread: |
1700 | ||
f76475ad | 1701 | restore_getcjmp (save_jump); |
284f4730 JB |
1702 | |
1703 | start_polling (); | |
1704 | ||
3b91a4f4 KH |
1705 | /* Don't wipe the echo area for a trivial event. */ |
1706 | if (XTYPE (c) != Lisp_Buffer) | |
1707 | echo_area_glyphs = 0; | |
284f4730 JB |
1708 | |
1709 | /* Handle things that only apply to characters. */ | |
1710 | if (XTYPE (c) == Lisp_Int) | |
1711 | { | |
1712 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1713 | if (XINT (c) == -1) |
284f4730 JB |
1714 | return c; |
1715 | ||
284f4730 | 1716 | if (XTYPE (Vkeyboard_translate_table) == Lisp_String |
f4255cd1 JB |
1717 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1718 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1719 | } |
1720 | ||
1721 | total_keys++; | |
5160df46 JB |
1722 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; |
1723 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
284f4730 JB |
1724 | recent_keys_index = 0; |
1725 | ||
1726 | /* Write c to the dribble file. If c is a lispy event, write | |
1727 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1728 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1729 | if (dribble) | |
1730 | { | |
1731 | if (XTYPE (c) == Lisp_Int) | |
f4255cd1 | 1732 | putc (XINT (c), dribble); |
284f4730 JB |
1733 | else |
1734 | { | |
9b8eb840 | 1735 | Lisp_Object dribblee; |
284f4730 JB |
1736 | |
1737 | /* If it's a structured event, take the event header. */ | |
9b8eb840 | 1738 | dribblee = EVENT_HEAD (c); |
284f4730 | 1739 | |
8f805655 | 1740 | if (XTYPE (dribblee) == Lisp_Symbol) |
284f4730 JB |
1741 | { |
1742 | putc ('<', dribble); | |
8f805655 JB |
1743 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), |
1744 | XSYMBOL (dribblee)->name->size, | |
284f4730 JB |
1745 | dribble); |
1746 | putc ('>', dribble); | |
1747 | } | |
1748 | } | |
1749 | ||
1750 | fflush (dribble); | |
1751 | } | |
1752 | ||
1753 | store_kbd_macro_char (c); | |
1754 | ||
51172b6d RS |
1755 | num_nonmacro_input_chars++; |
1756 | ||
284f4730 JB |
1757 | from_macro: |
1758 | reread_first: | |
284f4730 | 1759 | |
b8556aee | 1760 | /* Don't echo mouse motion events. */ |
4bb994d1 JB |
1761 | if (! (EVENT_HAS_PARAMETERS (c) |
1762 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
b8556aee RS |
1763 | echo_char (c); |
1764 | ||
db8c1663 | 1765 | /* Record this character as part of the current key. */ |
b8556aee | 1766 | add_command_key (c); |
284f4730 JB |
1767 | |
1768 | /* Re-reading in the middle of a command */ | |
1769 | reread: | |
1770 | last_input_char = c; | |
1771 | num_input_chars++; | |
1772 | ||
1773 | /* Process the help character specially if enabled */ | |
7e85b935 | 1774 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1775 | { |
1776 | Lisp_Object tem0; | |
1777 | count = specpdl_ptr - specpdl; | |
1778 | ||
1779 | record_unwind_protect (Fset_window_configuration, | |
1780 | Fcurrent_window_configuration (Qnil)); | |
1781 | ||
1782 | tem0 = Feval (Vhelp_form); | |
1783 | if (XTYPE (tem0) == Lisp_String) | |
1784 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); | |
1785 | ||
1786 | cancel_echoing (); | |
3cb81011 KH |
1787 | do |
1788 | c = read_char (0, 0, 0, Qnil, 0); | |
1789 | while (XTYPE (c) == Lisp_Buffer); | |
ff11dfa1 | 1790 | /* Remove the help from the frame */ |
284f4730 | 1791 | unbind_to (count, Qnil); |
e9bf89a0 | 1792 | prepare_menu_bars (); |
284f4730 JB |
1793 | redisplay (); |
1794 | if (EQ (c, make_number (040))) | |
1795 | { | |
1796 | cancel_echoing (); | |
3cb81011 KH |
1797 | do |
1798 | c = read_char (0, 0, 0, Qnil, 0); | |
1799 | while (XTYPE (c) == Lisp_Buffer); | |
284f4730 JB |
1800 | } |
1801 | } | |
1802 | ||
1803 | return c; | |
1804 | } | |
1805 | ||
1806 | Lisp_Object | |
1807 | print_help (object) | |
1808 | Lisp_Object object; | |
1809 | { | |
1810 | Fprinc (object, Qnil); | |
1811 | return Qnil; | |
1812 | } | |
1813 | ||
1814 | /* Copy out or in the info on where C-g should throw to. | |
1815 | This is used when running Lisp code from within get_char, | |
1816 | in case get_char is called recursively. | |
1817 | See read_process_output. */ | |
1818 | ||
1819 | save_getcjmp (temp) | |
1820 | jmp_buf temp; | |
1821 | { | |
1822 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1823 | } | |
1824 | ||
1825 | restore_getcjmp (temp) | |
1826 | jmp_buf temp; | |
1827 | { | |
1828 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1829 | } | |
1830 | ||
1831 | \f | |
284f4730 JB |
1832 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
1833 | of this function. */ | |
1834 | static Lisp_Object | |
1835 | tracking_off (old_value) | |
1836 | Lisp_Object old_value; | |
1837 | { | |
1838 | if (! XFASTINT (old_value)) | |
1839 | { | |
1840 | do_mouse_tracking = 0; | |
1841 | ||
1842 | /* Redisplay may have been preempted because there was input | |
1843 | available, and it assumes it will be called again after the | |
1844 | input has been processed. If the only input available was | |
1845 | the sort that we have just disabled, then we need to call | |
1846 | redisplay. */ | |
1847 | if (!readable_events ()) | |
1848 | { | |
e9bf89a0 | 1849 | prepare_menu_bars (); |
284f4730 JB |
1850 | redisplay_preserve_echo_area (); |
1851 | get_input_pending (&input_pending); | |
1852 | } | |
1853 | } | |
1854 | } | |
1855 | ||
1856 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
1857 | "Evaluate BODY with mouse movement events enabled.\n\ |
1858 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
1859 | you can read with `read-event'.\n\ | |
1860 | Normally, mouse motion is ignored.") | |
284f4730 JB |
1861 | (args) |
1862 | Lisp_Object args; | |
1863 | { | |
1864 | int count = specpdl_ptr - specpdl; | |
1865 | Lisp_Object val; | |
1866 | ||
1867 | XSET (val, Lisp_Int, do_mouse_tracking); | |
1868 | record_unwind_protect (tracking_off, val); | |
1869 | ||
3f9929bf RS |
1870 | if (!input_pending && !detect_input_pending ()) |
1871 | prepare_menu_bars (); | |
1872 | ||
284f4730 JB |
1873 | do_mouse_tracking = 1; |
1874 | ||
1875 | val = Fprogn (args); | |
1876 | return unbind_to (count, val); | |
1877 | } | |
a612e298 RS |
1878 | \f |
1879 | /* Low level keyboard/mouse input. | |
1880 | kbd_buffer_store_event places events in kbd_buffer, and | |
1881 | kbd_buffer_get_event retrieves them. | |
1882 | mouse_moved indicates when the mouse has moved again, and | |
1883 | *mouse_position_hook provides the mouse position. */ | |
1884 | ||
1885 | /* Return true iff there are any events in the queue that read-char | |
1886 | would return. If this returns false, a read-char would block. */ | |
1887 | static int | |
1888 | readable_events () | |
1889 | { | |
1890 | return ! EVENT_QUEUES_EMPTY; | |
1891 | } | |
1892 | ||
1893 | /* Set this for debugging, to have a way to get out */ | |
1894 | int stop_character; | |
284f4730 JB |
1895 | |
1896 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
1897 | ||
1898 | void | |
1899 | kbd_buffer_store_event (event) | |
1900 | register struct input_event *event; | |
1901 | { | |
1902 | if (event->kind == no_event) | |
1903 | abort (); | |
1904 | ||
1905 | if (event->kind == ascii_keystroke) | |
1906 | { | |
e9bf89a0 | 1907 | register int c = event->code & 0377; |
284f4730 | 1908 | |
faf5e407 JB |
1909 | if (event->modifiers & ctrl_modifier) |
1910 | c = make_ctrl_char (c); | |
1911 | ||
9fd7d808 RS |
1912 | c |= (event->modifiers |
1913 | & (meta_modifier | alt_modifier | |
1914 | | hyper_modifier | super_modifier)); | |
1915 | ||
86e5706b | 1916 | if (c == quit_char) |
284f4730 | 1917 | { |
3e51c7b7 JB |
1918 | extern SIGTYPE interrupt_signal (); |
1919 | ||
07d2b8de | 1920 | #ifdef MULTI_FRAME |
284f4730 | 1921 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 1922 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 1923 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 1924 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 1925 | { |
9b8eb840 | 1926 | Lisp_Object focus; |
4bb994d1 | 1927 | |
9b8eb840 | 1928 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 1929 | if (NILP (focus)) |
3c370943 | 1930 | internal_last_event_frame = event->frame_or_window; |
4bb994d1 | 1931 | else |
3c370943 JB |
1932 | internal_last_event_frame = focus; |
1933 | Vlast_event_frame = internal_last_event_frame; | |
4bb994d1 | 1934 | } |
07d2b8de | 1935 | #endif |
3e51c7b7 | 1936 | |
ffd56f97 | 1937 | last_event_timestamp = event->timestamp; |
284f4730 JB |
1938 | interrupt_signal (); |
1939 | return; | |
1940 | } | |
1941 | ||
1942 | if (c && c == stop_character) | |
1943 | { | |
1944 | sys_suspend (); | |
1945 | return; | |
1946 | } | |
284f4730 JB |
1947 | } |
1948 | ||
1949 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) | |
1950 | kbd_store_ptr = kbd_buffer; | |
1951 | ||
1952 | /* Don't let the very last slot in the buffer become full, | |
1953 | since that would make the two pointers equal, | |
1954 | and that is indistinguishable from an empty buffer. | |
1955 | Discard the event if it would fill the last slot. */ | |
1956 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) | |
1957 | { | |
1958 | kbd_store_ptr->kind = event->kind; | |
27203ead RS |
1959 | if (event->kind == selection_request_event) |
1960 | { | |
1961 | /* We must not use the ordinary copying code for this case, | |
1962 | since `part' is an enum and copying it might not copy enough | |
1963 | in this case. */ | |
1964 | bcopy (event, kbd_store_ptr, sizeof (*event)); | |
1965 | } | |
1966 | else | |
1967 | { | |
1968 | kbd_store_ptr->code = event->code; | |
1969 | kbd_store_ptr->part = event->part; | |
1970 | kbd_store_ptr->frame_or_window = event->frame_or_window; | |
1971 | kbd_store_ptr->modifiers = event->modifiers; | |
1972 | kbd_store_ptr->x = event->x; | |
1973 | kbd_store_ptr->y = event->y; | |
1974 | kbd_store_ptr->timestamp = event->timestamp; | |
1975 | } | |
7b4aedb9 JB |
1976 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
1977 | - kbd_buffer] | |
1978 | = event->frame_or_window); | |
284f4730 JB |
1979 | |
1980 | kbd_store_ptr++; | |
1981 | } | |
1982 | } | |
a612e298 RS |
1983 | \f |
1984 | /* Read one event from the event buffer, waiting if necessary. | |
1985 | The value is a Lisp object representing the event. | |
1986 | The value is nil for an event that should be ignored, | |
1987 | or that was handled here. | |
1988 | We always read and discard one event. */ | |
284f4730 JB |
1989 | |
1990 | static Lisp_Object | |
1991 | kbd_buffer_get_event () | |
1992 | { | |
1993 | register int c; | |
1994 | Lisp_Object obj; | |
1995 | ||
1996 | if (noninteractive) | |
1997 | { | |
1998 | c = getchar (); | |
1999 | XSET (obj, Lisp_Int, c); | |
2000 | return obj; | |
2001 | } | |
2002 | ||
2003 | /* Wait until there is input available. */ | |
2004 | for (;;) | |
2005 | { | |
284f4730 JB |
2006 | if (!EVENT_QUEUES_EMPTY) |
2007 | break; | |
2008 | ||
2009 | /* If the quit flag is set, then read_char will return | |
2010 | quit_char, so that counts as "available input." */ | |
2011 | if (!NILP (Vquit_flag)) | |
2012 | quit_throw_to_read_char (); | |
2013 | ||
2014 | /* One way or another, wait until input is available; then, if | |
2015 | interrupt handlers have not read it, read it now. */ | |
2016 | ||
2017 | #ifdef OLDVMS | |
2018 | wait_for_kbd_input (); | |
2019 | #else | |
2020 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2021 | #ifdef SIGIO | |
2022 | gobble_input (0); | |
2023 | #endif /* SIGIO */ | |
2024 | if (EVENT_QUEUES_EMPTY) | |
2025 | { | |
f76475ad JB |
2026 | Lisp_Object minus_one; |
2027 | ||
2028 | XSET (minus_one, Lisp_Int, -1); | |
2029 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 JB |
2030 | |
2031 | if (!interrupt_input && EVENT_QUEUES_EMPTY) | |
bedae5a5 RS |
2032 | /* Pass 1 for EXPECT since we just waited to have input. */ |
2033 | read_avail_input (1); | |
284f4730 JB |
2034 | } |
2035 | #endif /* not VMS */ | |
2036 | } | |
2037 | ||
2038 | /* At this point, we know that there is a readable event available | |
2039 | somewhere. If the event queue is empty, then there must be a | |
2040 | mouse movement enabled and available. */ | |
2041 | if (kbd_fetch_ptr != kbd_store_ptr) | |
2042 | { | |
cd21b839 | 2043 | struct input_event *event; |
3e51c7b7 | 2044 | |
856bf263 | 2045 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
cd21b839 JB |
2046 | ? kbd_fetch_ptr |
2047 | : kbd_buffer); | |
3e51c7b7 | 2048 | |
cd21b839 | 2049 | last_event_timestamp = event->timestamp; |
cd21b839 | 2050 | |
4bb994d1 JB |
2051 | obj = Qnil; |
2052 | ||
48e416d4 | 2053 | /* These two kinds of events get special handling |
a612e298 RS |
2054 | and don't actually appear to the command loop. |
2055 | We return nil for them. */ | |
48e416d4 RS |
2056 | if (event->kind == selection_request_event) |
2057 | { | |
598a9fa7 | 2058 | #ifdef HAVE_X11 |
48e416d4 RS |
2059 | x_handle_selection_request (event); |
2060 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2061 | #else |
2062 | /* We're getting selection request events, but we don't have | |
2063 | a window system. */ | |
2064 | abort (); | |
2065 | #endif | |
48e416d4 RS |
2066 | } |
2067 | ||
1e12dd87 | 2068 | else if (event->kind == selection_clear_event) |
48e416d4 | 2069 | { |
598a9fa7 | 2070 | #ifdef HAVE_X11 |
48e416d4 RS |
2071 | x_handle_selection_clear (event); |
2072 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
2073 | #else |
2074 | /* We're getting selection request events, but we don't have | |
2075 | a window system. */ | |
2076 | abort (); | |
2077 | #endif | |
48e416d4 | 2078 | } |
990acea3 RS |
2079 | #ifdef HAVE_X11 |
2080 | else if (event->kind == delete_window_event) | |
2081 | { | |
58f6c8ab RS |
2082 | Lisp_Object tail, frame; |
2083 | struct frame *f; | |
2084 | ||
2085 | /* If the user destroys the only frame, Emacs should exit. | |
2086 | Count visible frames and iconified frames. */ | |
2087 | for (tail = Vframe_list; CONSP (tail); tail = XCONS (tail)->cdr) | |
2088 | { | |
2089 | frame = XCONS (tail)->car; | |
2090 | if (XTYPE (frame) != Lisp_Frame || EQ (frame, event->frame_or_window)) | |
2091 | continue; | |
2092 | f = XFRAME (frame); | |
2093 | if (FRAME_VISIBLE_P (f) || FRAME_ICONIFIED_P (f)) | |
2094 | break; | |
2095 | } | |
990acea3 | 2096 | |
58f6c8ab | 2097 | if (! CONSP (tail)) |
80e4aa30 | 2098 | Fkill_emacs (Qnil); |
854f3a54 RS |
2099 | |
2100 | Fdelete_frame (event->frame_or_window, Qt); | |
2101 | kbd_fetch_ptr = event + 1; | |
990acea3 RS |
2102 | } |
2103 | #endif | |
f5e09c8b RS |
2104 | else if (event->kind == menu_bar_event) |
2105 | { | |
2106 | /* The event value is in the frame_or_window slot. */ | |
2107 | obj = event->frame_or_window; | |
2108 | kbd_fetch_ptr = event + 1; | |
2109 | } | |
a8015ab5 KH |
2110 | else if (event->kind == buffer_switch_event) |
2111 | { | |
2112 | /* The value doesn't matter here; only the type is tested. */ | |
2113 | XSET (obj, Lisp_Buffer, current_buffer); | |
2114 | kbd_fetch_ptr = event + 1; | |
2115 | } | |
a612e298 RS |
2116 | /* Just discard these, by returning nil. |
2117 | (They shouldn't be found in the buffer, | |
2118 | but on some machines it appears they do show up.) */ | |
2119 | else if (event->kind == no_event) | |
2120 | kbd_fetch_ptr = event + 1; | |
48e416d4 | 2121 | |
4bb994d1 JB |
2122 | /* If this event is on a different frame, return a switch-frame this |
2123 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2124 | else |
2125 | { | |
a6d53864 | 2126 | #ifdef MULTI_FRAME |
9b8eb840 | 2127 | Lisp_Object frame; |
1e12dd87 | 2128 | Lisp_Object focus; |
7b4aedb9 | 2129 | |
9b8eb840 | 2130 | frame = event->frame_or_window; |
1e12dd87 RS |
2131 | if (XTYPE (frame) == Lisp_Window) |
2132 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
4bb994d1 | 2133 | |
1e12dd87 RS |
2134 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2135 | if (! NILP (focus)) | |
2136 | frame = focus; | |
07d2b8de | 2137 | |
1e12dd87 RS |
2138 | if (! EQ (frame, internal_last_event_frame) |
2139 | && XFRAME (frame) != selected_frame) | |
2140 | obj = make_lispy_switch_frame (frame); | |
2141 | internal_last_event_frame = frame; | |
a6d53864 | 2142 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2143 | |
1e12dd87 RS |
2144 | /* If we didn't decide to make a switch-frame event, go ahead |
2145 | and build a real event from the queue entry. */ | |
cd21b839 | 2146 | |
1e12dd87 RS |
2147 | if (NILP (obj)) |
2148 | { | |
2149 | obj = make_lispy_event (event); | |
2150 | ||
2151 | /* Wipe out this event, to catch bugs. */ | |
2152 | event->kind = no_event; | |
2153 | (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] | |
2154 | = Qnil); | |
2155 | ||
2156 | kbd_fetch_ptr = event + 1; | |
2157 | } | |
4bb994d1 | 2158 | } |
284f4730 | 2159 | } |
a612e298 | 2160 | /* Try generating a mouse motion event. */ |
284f4730 JB |
2161 | else if (do_mouse_tracking && mouse_moved) |
2162 | { | |
7e85b935 | 2163 | FRAME_PTR f = 0; |
7b4aedb9 | 2164 | Lisp_Object bar_window; |
3c370943 | 2165 | enum scroll_bar_part part; |
e5d77022 JB |
2166 | Lisp_Object x, y; |
2167 | unsigned long time; | |
284f4730 | 2168 | |
7b4aedb9 | 2169 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2170 | |
2171 | obj = Qnil; | |
284f4730 | 2172 | |
07d2b8de | 2173 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2174 | /* Decide if we should generate a switch-frame event. Don't |
2175 | generate switch-frame events for motion outside of all Emacs | |
2176 | frames. */ | |
2177 | if (f) | |
cd21b839 | 2178 | { |
9b8eb840 | 2179 | Lisp_Object frame; |
4bb994d1 | 2180 | |
9b8eb840 | 2181 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 JB |
2182 | if (NILP (frame)) |
2183 | XSET (frame, Lisp_Frame, f); | |
2184 | ||
80645119 JB |
2185 | if (! EQ (frame, internal_last_event_frame) |
2186 | && XFRAME (frame) != selected_frame) | |
764cb3f9 | 2187 | obj = make_lispy_switch_frame (frame); |
80645119 | 2188 | internal_last_event_frame = frame; |
cd21b839 | 2189 | } |
68553292 | 2190 | #endif |
4bb994d1 | 2191 | |
68553292 | 2192 | #if defined(MULTI_FRAME) || defined(HAVE_MOUSE) |
4bb994d1 JB |
2193 | /* If we didn't decide to make a switch-frame event, go ahead and |
2194 | return a mouse-motion event. */ | |
2195 | if (NILP (obj)) | |
7b4aedb9 | 2196 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb RS |
2197 | #endif |
2198 | } | |
284f4730 JB |
2199 | else |
2200 | /* We were promised by the above while loop that there was | |
2201 | something for us to read! */ | |
2202 | abort (); | |
2203 | ||
2204 | input_pending = readable_events (); | |
2205 | ||
3c370943 JB |
2206 | #ifdef MULTI_FRAME |
2207 | Vlast_event_frame = internal_last_event_frame; | |
2208 | #endif | |
2209 | ||
284f4730 JB |
2210 | return (obj); |
2211 | } | |
a612e298 RS |
2212 | \f |
2213 | /* Process any events that are not user-visible, | |
2214 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2215 | |
2216 | void | |
2217 | swallow_events () | |
2218 | { | |
2219 | while (kbd_fetch_ptr != kbd_store_ptr) | |
2220 | { | |
2221 | struct input_event *event; | |
2222 | ||
2223 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) | |
2224 | ? kbd_fetch_ptr | |
2225 | : kbd_buffer); | |
2226 | ||
2227 | last_event_timestamp = event->timestamp; | |
2228 | ||
2229 | /* These two kinds of events get special handling | |
2230 | and don't actually appear to the command loop. */ | |
2231 | if (event->kind == selection_request_event) | |
2232 | { | |
2233 | #ifdef HAVE_X11 | |
2234 | x_handle_selection_request (event); | |
2235 | kbd_fetch_ptr = event + 1; | |
2236 | #else | |
2237 | /* We're getting selection request events, but we don't have | |
2238 | a window system. */ | |
2239 | abort (); | |
2240 | #endif | |
2241 | } | |
2242 | ||
2243 | else if (event->kind == selection_clear_event) | |
2244 | { | |
2245 | #ifdef HAVE_X11 | |
2246 | x_handle_selection_clear (event); | |
2247 | kbd_fetch_ptr = event + 1; | |
2248 | #else | |
2249 | /* We're getting selection request events, but we don't have | |
2250 | a window system. */ | |
2251 | abort (); | |
2252 | #endif | |
2253 | } | |
2254 | else | |
2255 | break; | |
2256 | } | |
2257 | ||
2258 | get_input_pending (&input_pending); | |
2259 | } | |
a612e298 | 2260 | \f |
284f4730 | 2261 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2262 | static Lisp_Object accent_key_syms; |
270a208f | 2263 | static Lisp_Object system_key_syms; |
284f4730 JB |
2264 | static Lisp_Object func_key_syms; |
2265 | static Lisp_Object mouse_syms; | |
2266 | ||
270a208f | 2267 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2268 | |
e9bf89a0 RS |
2269 | /* This is a list of keysym codes for special "accent" characters. |
2270 | It parallels lispy_accent_keys. */ | |
2271 | ||
2272 | static int lispy_accent_codes[] = | |
2273 | { | |
79a7046c | 2274 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2275 | XK_dead_circumflex, |
79a7046c RS |
2276 | #else |
2277 | 0, | |
2278 | #endif | |
2279 | #ifdef XK_dead_grave | |
e9bf89a0 | 2280 | XK_dead_grave, |
79a7046c RS |
2281 | #else |
2282 | 0, | |
2283 | #endif | |
2284 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2285 | XK_dead_tilde, |
79a7046c RS |
2286 | #else |
2287 | 0, | |
2288 | #endif | |
2289 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2290 | XK_dead_diaeresis, |
79a7046c RS |
2291 | #else |
2292 | 0, | |
2293 | #endif | |
2294 | #ifdef XK_dead_macron | |
e9bf89a0 | 2295 | XK_dead_macron, |
79a7046c RS |
2296 | #else |
2297 | 0, | |
2298 | #endif | |
2299 | #ifdef XK_dead_degree | |
e9bf89a0 | 2300 | XK_dead_degree, |
79a7046c RS |
2301 | #else |
2302 | 0, | |
2303 | #endif | |
2304 | #ifdef XK_dead_acute | |
e9bf89a0 | 2305 | XK_dead_acute, |
79a7046c RS |
2306 | #else |
2307 | 0, | |
2308 | #endif | |
2309 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2310 | XK_dead_cedilla, |
79a7046c RS |
2311 | #else |
2312 | 0, | |
2313 | #endif | |
2314 | #ifdef XK_dead_breve | |
e9bf89a0 | 2315 | XK_dead_breve, |
79a7046c RS |
2316 | #else |
2317 | 0, | |
2318 | #endif | |
2319 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2320 | XK_dead_ogonek, |
79a7046c RS |
2321 | #else |
2322 | 0, | |
2323 | #endif | |
2324 | #ifdef XK_dead_caron | |
e9bf89a0 | 2325 | XK_dead_caron, |
79a7046c RS |
2326 | #else |
2327 | 0, | |
2328 | #endif | |
2329 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2330 | XK_dead_doubleacute, |
79a7046c RS |
2331 | #else |
2332 | 0, | |
2333 | #endif | |
2334 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2335 | XK_dead_abovedot, |
79a7046c RS |
2336 | #else |
2337 | 0, | |
2338 | #endif | |
e9bf89a0 RS |
2339 | }; |
2340 | ||
2341 | /* This is a list of Lisp names for special "accent" characters. | |
2342 | It parallels lispy_accent_codes. */ | |
2343 | ||
2344 | static char *lispy_accent_keys[] = | |
2345 | { | |
2346 | "dead-circumflex", | |
2347 | "dead-grave", | |
2348 | "dead-tilde", | |
2349 | "dead-diaeresis", | |
2350 | "dead-macron", | |
2351 | "dead-degree", | |
2352 | "dead-acute", | |
2353 | "dead-cedilla", | |
2354 | "dead-breve", | |
2355 | "dead-ogonek", | |
2356 | "dead-caron", | |
2357 | "dead-doubleacute", | |
2358 | "dead-abovedot", | |
2359 | }; | |
2360 | ||
284f4730 JB |
2361 | /* You'll notice that this table is arranged to be conveniently |
2362 | indexed by X Windows keysym values. */ | |
2363 | static char *lispy_function_keys[] = | |
2364 | { | |
2365 | /* X Keysym value */ | |
2366 | ||
80e4aa30 | 2367 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2368 | "backspace", |
2369 | "tab", | |
2370 | "linefeed", | |
2371 | "clear", | |
2372 | 0, | |
2373 | "return", | |
2374 | 0, 0, | |
2375 | 0, 0, 0, /* 0xff10 */ | |
2376 | "pause", | |
2377 | 0, 0, 0, 0, 0, 0, 0, | |
2378 | "escape", | |
2379 | 0, 0, 0, 0, | |
2380 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2381 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2382 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2383 | ||
284f4730 JB |
2384 | "home", /* 0xff50 */ /* IsCursorKey */ |
2385 | "left", | |
2386 | "up", | |
2387 | "right", | |
2388 | "down", | |
2389 | "prior", | |
2390 | "next", | |
2391 | "end", | |
2392 | "begin", | |
2393 | 0, /* 0xff59 */ | |
2394 | 0, 0, 0, 0, 0, 0, | |
2395 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2396 | "print", | |
2397 | "execute", | |
2398 | "insert", | |
2399 | 0, /* 0xff64 */ | |
2400 | "undo", | |
2401 | "redo", | |
2402 | "menu", | |
2403 | "find", | |
2404 | "cancel", | |
2405 | "help", | |
2406 | "break", /* 0xff6b */ | |
2407 | ||
9fdbfdf8 | 2408 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2409 | 0, /* 0xff76 */ |
36ae397e | 2410 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2411 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2412 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2413 | "kp-tab", /* 0xff89 */ | |
2414 | 0, 0, 0, | |
2415 | "kp-enter", /* 0xff8d */ | |
2416 | 0, 0, 0, | |
2417 | "kp-f1", /* 0xff91 */ | |
2418 | "kp-f2", | |
2419 | "kp-f3", | |
2420 | "kp-f4", | |
872157e7 RS |
2421 | "kp-home", /* 0xff95 */ |
2422 | "kp-left", | |
2423 | "kp-up", | |
2424 | "kp-right", | |
2425 | "kp-down", | |
2426 | "kp-prior", /* kp-page-up */ | |
2427 | "kp-next", /* kp-page-down */ | |
2428 | "kp-end", | |
2429 | "kp-begin", | |
2430 | "kp-insert", | |
2431 | "kp-delete", | |
2432 | 0, /* 0xffa0 */ | |
2433 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2434 | "kp-multiply", /* 0xffaa */ |
2435 | "kp-add", | |
2436 | "kp-separator", | |
2437 | "kp-subtract", | |
2438 | "kp-decimal", | |
2439 | "kp-divide", /* 0xffaf */ | |
2440 | "kp-0", /* 0xffb0 */ | |
2441 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2442 | 0, /* 0xffba */ | |
2443 | 0, 0, | |
2444 | "kp-equal", /* 0xffbd */ | |
2445 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2446 | "f2", |
2447 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2448 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2449 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2450 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2451 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2452 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2453 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2454 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2455 | }; |
2456 | ||
2457 | static char *lispy_mouse_names[] = | |
2458 | { | |
2459 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2460 | }; | |
2461 | ||
3c370943 | 2462 | /* Scroll bar parts. */ |
4bb994d1 JB |
2463 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2464 | ||
3c370943 JB |
2465 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2466 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2467 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2468 | }; | |
2469 | ||
2470 | ||
7b4aedb9 | 2471 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2472 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2473 | |
2474 | The elements have the form | |
2475 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2476 | where REST is the cdr of a position as it would be reported in the event. | |
2477 | ||
2478 | The make_lispy_event function stores positions here to tell the | |
2479 | difference between click and drag events, and to store the starting | |
2480 | location to be included in drag events. */ | |
2481 | ||
2482 | static Lisp_Object button_down_location; | |
88cb0656 | 2483 | |
fbcd35bd JB |
2484 | /* Information about the most recent up-going button event: Which |
2485 | button, what location, and what time. */ | |
2486 | ||
559f9d04 RS |
2487 | static int last_mouse_button; |
2488 | static int last_mouse_x; | |
2489 | static int last_mouse_y; | |
2490 | static unsigned long button_down_time; | |
fbcd35bd | 2491 | |
564dc952 JB |
2492 | /* The maximum time between clicks to make a double-click, |
2493 | or Qnil to disable double-click detection, | |
2494 | or Qt for no time limit. */ | |
2495 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2496 | |
2497 | /* The number of clicks in this multiple-click. */ | |
2498 | ||
2499 | int double_click_count; | |
2500 | ||
bb936752 FP |
2501 | #ifdef USE_X_TOOLKIT |
2502 | extern Lisp_Object map_event_to_object (); | |
2503 | #endif /* USE_X_TOOLKIT */ | |
2504 | ||
284f4730 JB |
2505 | /* Given a struct input_event, build the lisp event which represents |
2506 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2507 | movement buffer, which should have a movement event in it. |
2508 | ||
2509 | Note that events must be passed to this function in the order they | |
2510 | are received; this function stores the location of button presses | |
2511 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2512 | |
2513 | static Lisp_Object | |
2514 | make_lispy_event (event) | |
2515 | struct input_event *event; | |
2516 | { | |
79a7046c RS |
2517 | int i; |
2518 | ||
284f4730 JB |
2519 | #ifdef SWITCH_ENUM_BUG |
2520 | switch ((int) event->kind) | |
2521 | #else | |
2522 | switch (event->kind) | |
2523 | #endif | |
2524 | { | |
284f4730 JB |
2525 | /* A simple keystroke. */ |
2526 | case ascii_keystroke: | |
86e5706b | 2527 | { |
e9bf89a0 | 2528 | int c = event->code & 0377; |
5a1c6df8 JB |
2529 | /* Turn ASCII characters into control characters |
2530 | when proper. */ | |
2531 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2532 | c = make_ctrl_char (c); |
2533 | ||
2534 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2535 | just above, and the shift key was taken care of by the X code, | |
2536 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2537 | c |= (event->modifiers |
2538 | & (meta_modifier | alt_modifier | |
2539 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2540 | button_down_time = 0; |
86e5706b RS |
2541 | return c; |
2542 | } | |
284f4730 JB |
2543 | |
2544 | /* A function key. The symbol may need to have modifier prefixes | |
2545 | tacked onto it. */ | |
2546 | case non_ascii_keystroke: | |
559f9d04 | 2547 | button_down_time = 0; |
e9bf89a0 RS |
2548 | |
2549 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2550 | if (event->code == lispy_accent_codes[i]) | |
2551 | return modify_event_symbol (i, | |
2552 | event->modifiers, | |
80e4aa30 | 2553 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2554 | lispy_accent_keys, &accent_key_syms, |
2555 | (sizeof (lispy_accent_keys) | |
2556 | / sizeof (lispy_accent_keys[0]))); | |
2557 | ||
270a208f | 2558 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2559 | if (event->code & (1 << 28)) |
2560 | { | |
2561 | /* We need to use an alist rather than a vector as the cache | |
2562 | since we can't make a vector long enuf. */ | |
270a208f RS |
2563 | if (NILP (system_key_syms)) |
2564 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2565 | return modify_event_symbol (event->code & 0xffffff, |
2566 | event->modifiers, | |
270a208f RS |
2567 | Qfunction_key, Vsystem_key_alist, |
2568 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2569 | } |
2570 | ||
e9bf89a0 RS |
2571 | return modify_event_symbol (event->code - 0xff00, |
2572 | event->modifiers, | |
80e4aa30 | 2573 | Qfunction_key, Qnil, |
284f4730 JB |
2574 | lispy_function_keys, &func_key_syms, |
2575 | (sizeof (lispy_function_keys) | |
2576 | / sizeof (lispy_function_keys[0]))); | |
2577 | break; | |
2578 | ||
5846638c | 2579 | #if defined(MULTI_FRAME) || defined(HAVE_MOUSE) |
88cb0656 JB |
2580 | /* A mouse click. Figure out where it is, decide whether it's |
2581 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2582 | case mouse_click: |
3c370943 | 2583 | case scroll_bar_click: |
284f4730 | 2584 | { |
e9bf89a0 | 2585 | int button = event->code; |
559f9d04 | 2586 | int is_double; |
7b4aedb9 | 2587 | Lisp_Object position; |
dbc4e1c1 JB |
2588 | Lisp_Object *start_pos_ptr; |
2589 | Lisp_Object start_pos; | |
284f4730 | 2590 | |
7b4aedb9 | 2591 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2592 | abort (); |
2593 | ||
7b4aedb9 JB |
2594 | /* Build the position as appropriate for this mouse click. */ |
2595 | if (event->kind == mouse_click) | |
284f4730 | 2596 | { |
7b4aedb9 | 2597 | int part; |
598a9fa7 | 2598 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2599 | Lisp_Object window; |
7b4aedb9 | 2600 | Lisp_Object posn; |
9e20143a RS |
2601 | int row, column; |
2602 | ||
5da3133a RS |
2603 | /* Ignore mouse events that were made on frame that |
2604 | have been deleted. */ | |
2605 | if (! FRAME_LIVE_P (f)) | |
2606 | return Qnil; | |
2607 | ||
9e20143a RS |
2608 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
2609 | &column, &row, 0, 0); | |
7b4aedb9 | 2610 | |
bb936752 FP |
2611 | #ifdef USE_X_TOOLKIT |
2612 | if (FRAME_EXTERNAL_MENU_BAR (f) && XINT (event->y) == -1) | |
7b260679 | 2613 | #else |
9e20143a | 2614 | if (row < FRAME_MENU_BAR_LINES (f)) |
7b260679 | 2615 | #endif |
bb936752 | 2616 | { |
b7c49376 | 2617 | Lisp_Object items, item; |
0a0e8fe6 RS |
2618 | int hpos; |
2619 | int i; | |
2620 | ||
2621 | /* Activate the menu bar on the down event. If the | |
2622 | up event comes in before the menu code can deal with it, | |
2623 | just ignore it. */ | |
2624 | if (! (event->modifiers & down_modifier)) | |
2625 | return Qnil; | |
0aafc975 | 2626 | |
7b260679 | 2627 | #ifdef USE_X_TOOLKIT |
bb936752 FP |
2628 | /* The click happened in the menubar. |
2629 | Look for the menu item selected. */ | |
b7c49376 | 2630 | item = map_event_to_object (event, f); |
0aafc975 | 2631 | |
bb936752 FP |
2632 | XFASTINT (event->y) = 1; |
2633 | #else /* not USE_X_TOOLKIT */ | |
f2ae6b3f | 2634 | item = Qnil; |
5ec75a55 | 2635 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2636 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2637 | { |
2638 | Lisp_Object pos, string; | |
b7c49376 RS |
2639 | string = XVECTOR (items)->contents[i + 1]; |
2640 | pos = XVECTOR (items)->contents[i + 2]; | |
2641 | if (NILP (string)) | |
2642 | break; | |
9e20143a RS |
2643 | if (column >= XINT (pos) |
2644 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2645 | { |
2646 | item = XVECTOR (items)->contents[i]; | |
2647 | break; | |
2648 | } | |
5ec75a55 | 2649 | } |
bb936752 | 2650 | #endif /* not USE_X_TOOLKIT */ |
9e20143a | 2651 | |
5ec75a55 RS |
2652 | position |
2653 | = Fcons (event->frame_or_window, | |
2654 | Fcons (Qmenu_bar, | |
2655 | Fcons (Fcons (event->x, event->y), | |
2656 | Fcons (make_number (event->timestamp), | |
2657 | Qnil)))); | |
2658 | ||
b7c49376 | 2659 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2660 | } |
0aafc975 | 2661 | |
9e20143a | 2662 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 RS |
2663 | |
2664 | if (XTYPE (window) != Lisp_Window) | |
7b4aedb9 | 2665 | posn = Qnil; |
284f4730 | 2666 | else |
7b4aedb9 | 2667 | { |
9e20143a RS |
2668 | int pixcolumn, pixrow; |
2669 | column -= XINT (XWINDOW (window)->left); | |
2670 | row -= XINT (XWINDOW (window)->top); | |
2671 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2672 | XSETINT (event->x, pixcolumn); | |
2673 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2674 | |
7b4aedb9 JB |
2675 | if (part == 1) |
2676 | posn = Qmode_line; | |
2677 | else if (part == 2) | |
2678 | posn = Qvertical_line; | |
2679 | else | |
dbc4e1c1 JB |
2680 | XSET (posn, Lisp_Int, |
2681 | buffer_posn_from_coords (XWINDOW (window), | |
9e20143a | 2682 | column, row)); |
7b4aedb9 JB |
2683 | } |
2684 | ||
5ec75a55 RS |
2685 | position |
2686 | = Fcons (window, | |
2687 | Fcons (posn, | |
2688 | Fcons (Fcons (event->x, event->y), | |
2689 | Fcons (make_number (event->timestamp), | |
2690 | Qnil)))); | |
284f4730 | 2691 | } |
7b4aedb9 | 2692 | else |
88cb0656 | 2693 | { |
9e20143a RS |
2694 | Lisp_Object window; |
2695 | Lisp_Object portion_whole; | |
2696 | Lisp_Object part; | |
2697 | ||
2698 | window = event->frame_or_window; | |
2699 | portion_whole = Fcons (event->x, event->y); | |
2700 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2701 | |
2702 | position = | |
2703 | Fcons (window, | |
3c370943 | 2704 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2705 | Fcons (portion_whole, |
2706 | Fcons (make_number (event->timestamp), | |
9e20143a | 2707 | Fcons (part, Qnil))))); |
88cb0656 JB |
2708 | } |
2709 | ||
dbc4e1c1 JB |
2710 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2711 | ||
2712 | start_pos = *start_pos_ptr; | |
2713 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2714 | |
559f9d04 RS |
2715 | is_double = (button == last_mouse_button |
2716 | && XINT (event->x) == last_mouse_x | |
2717 | && XINT (event->y) == last_mouse_y | |
2718 | && button_down_time != 0 | |
2719 | && (EQ (Vdouble_click_time, Qt) | |
2720 | || (INTEGERP (Vdouble_click_time) | |
2721 | && ((int)(event->timestamp - button_down_time) | |
2722 | < XINT (Vdouble_click_time))))); | |
2723 | last_mouse_button = button; | |
2724 | last_mouse_x = XINT (event->x); | |
2725 | last_mouse_y = XINT (event->y); | |
2726 | ||
7b4aedb9 JB |
2727 | /* If this is a button press, squirrel away the location, so |
2728 | we can decide later whether it was a click or a drag. */ | |
2729 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2730 | { |
2731 | if (is_double) | |
2732 | { | |
2733 | double_click_count++; | |
2734 | event->modifiers |= ((double_click_count > 2) | |
2735 | ? triple_modifier | |
2736 | : double_modifier); | |
2737 | } | |
2738 | else | |
2739 | double_click_count = 1; | |
2740 | button_down_time = event->timestamp; | |
2741 | *start_pos_ptr = Fcopy_alist (position); | |
2742 | } | |
7b4aedb9 | 2743 | |
88cb0656 | 2744 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2745 | see if this was a click or a drag. */ |
88cb0656 JB |
2746 | else if (event->modifiers & up_modifier) |
2747 | { | |
48e416d4 RS |
2748 | /* If we did not see a down before this up, |
2749 | ignore the up. Probably this happened because | |
2750 | the down event chose a menu item. | |
2751 | It would be an annoyance to treat the release | |
2752 | of the button that chose the menu item | |
2753 | as a separate event. */ | |
2754 | ||
2755 | if (XTYPE (start_pos) != Lisp_Cons) | |
2756 | return Qnil; | |
2757 | ||
88cb0656 | 2758 | event->modifiers &= ~up_modifier; |
48e416d4 | 2759 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
dbc4e1c1 JB |
2760 | if (XTYPE (start_pos) != Lisp_Cons) |
2761 | event->modifiers |= click_modifier; | |
2762 | else | |
48e416d4 | 2763 | #endif |
dbc4e1c1 JB |
2764 | { |
2765 | /* The third element of every position should be the (x,y) | |
2766 | pair. */ | |
9b8eb840 | 2767 | Lisp_Object down; |
dbc4e1c1 | 2768 | |
9b8eb840 | 2769 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
2770 | if (EQ (event->x, XCONS (down)->car) |
2771 | && EQ (event->y, XCONS (down)->cdr)) | |
2772 | { | |
559f9d04 RS |
2773 | if (is_double && double_click_count > 1) |
2774 | event->modifiers |= ((double_click_count > 2) | |
2775 | ? triple_modifier | |
2776 | : double_modifier); | |
fbcd35bd | 2777 | else |
559f9d04 | 2778 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2779 | } |
2780 | else | |
2781 | { | |
559f9d04 | 2782 | button_down_time = 0; |
fbcd35bd JB |
2783 | event->modifiers |= drag_modifier; |
2784 | } | |
dbc4e1c1 | 2785 | } |
88cb0656 JB |
2786 | } |
2787 | else | |
2788 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2789 | the up_modifier set. */ |
88cb0656 JB |
2790 | abort (); |
2791 | ||
88cb0656 | 2792 | { |
7b4aedb9 | 2793 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
2794 | Lisp_Object head; |
2795 | ||
2796 | head = modify_event_symbol (button, | |
2797 | event->modifiers, | |
2798 | Qmouse_click, Qnil, | |
2799 | lispy_mouse_names, &mouse_syms, | |
2800 | (sizeof (lispy_mouse_names) | |
2801 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 2802 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
2803 | return Fcons (head, |
2804 | Fcons (start_pos, | |
2805 | Fcons (position, | |
2806 | Qnil))); | |
fbcd35bd JB |
2807 | else if (event->modifiers & (double_modifier | triple_modifier)) |
2808 | return Fcons (head, | |
2809 | Fcons (position, | |
2810 | Fcons (make_number (double_click_count), | |
2811 | Qnil))); | |
88cb0656 JB |
2812 | else |
2813 | return Fcons (head, | |
7b4aedb9 | 2814 | Fcons (position, |
88cb0656 JB |
2815 | Qnil)); |
2816 | } | |
284f4730 | 2817 | } |
5846638c | 2818 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 2819 | |
284f4730 JB |
2820 | /* The 'kind' field of the event is something we don't recognize. */ |
2821 | default: | |
48e416d4 | 2822 | abort (); |
284f4730 JB |
2823 | } |
2824 | } | |
2825 | ||
68553292 | 2826 | #if defined(MULTI_FRAME) || defined(HAVE_MOUSE) |
6cbff1cb | 2827 | |
284f4730 | 2828 | static Lisp_Object |
7b4aedb9 | 2829 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 2830 | FRAME_PTR frame; |
7b4aedb9 | 2831 | Lisp_Object bar_window; |
3c370943 | 2832 | enum scroll_bar_part part; |
284f4730 | 2833 | Lisp_Object x, y; |
e5d77022 | 2834 | unsigned long time; |
284f4730 | 2835 | { |
68553292 | 2836 | #ifdef MULTI_FRAME |
3c370943 | 2837 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 2838 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 2839 | { |
9b8eb840 | 2840 | Lisp_Object part_sym; |
4bb994d1 | 2841 | |
9b8eb840 | 2842 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 2843 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 2844 | (Fcons (Fcons (bar_window, |
3c370943 | 2845 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
2846 | Fcons (Fcons (x, y), |
2847 | Fcons (make_number (time), | |
cb5df6ae | 2848 | Fcons (part_sym, |
4bb994d1 JB |
2849 | Qnil))))), |
2850 | Qnil))); | |
2851 | } | |
2852 | ||
2853 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 2854 | else |
68553292 | 2855 | #endif /* MULTI_FRAME */ |
284f4730 | 2856 | { |
4bb994d1 | 2857 | int area; |
9e20143a | 2858 | Lisp_Object window; |
4bb994d1 | 2859 | Lisp_Object posn; |
9e20143a RS |
2860 | int column, row; |
2861 | ||
68553292 | 2862 | #ifdef MULTI_FRAME |
9e20143a | 2863 | if (frame) |
68553292 RS |
2864 | #else |
2865 | if (1) | |
2866 | #endif | |
047688cb RS |
2867 | { |
2868 | /* It's in a frame; which window on that frame? */ | |
2869 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
2870 | window = window_from_coordinates (frame, column, row, &area); | |
2871 | } | |
9e20143a RS |
2872 | else |
2873 | window = Qnil; | |
4bb994d1 JB |
2874 | |
2875 | if (XTYPE (window) == Lisp_Window) | |
2876 | { | |
9e20143a RS |
2877 | int pixcolumn, pixrow; |
2878 | column -= XINT (XWINDOW (window)->left); | |
2879 | row -= XINT (XWINDOW (window)->top); | |
2880 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
2881 | XSETINT (x, pixcolumn); | |
2882 | XSETINT (y, pixrow); | |
4bb994d1 JB |
2883 | |
2884 | if (area == 1) | |
2885 | posn = Qmode_line; | |
2886 | else if (area == 2) | |
2887 | posn = Qvertical_line; | |
2888 | else | |
2889 | XSET (posn, Lisp_Int, | |
9e20143a | 2890 | buffer_posn_from_coords (XWINDOW (window), column, row)); |
4bb994d1 | 2891 | } |
68553292 | 2892 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
2893 | else if (frame != 0) |
2894 | { | |
2895 | XSET (window, Lisp_Frame, frame); | |
2896 | posn = Qnil; | |
2897 | } | |
68553292 | 2898 | #endif |
284f4730 | 2899 | else |
4bb994d1 JB |
2900 | { |
2901 | window = Qnil; | |
2902 | posn = Qnil; | |
f76b81d6 JB |
2903 | XFASTINT (x) = 0; |
2904 | XFASTINT (y) = 0; | |
4bb994d1 | 2905 | } |
284f4730 | 2906 | |
4bb994d1 JB |
2907 | return Fcons (Qmouse_movement, |
2908 | Fcons (Fcons (window, | |
2909 | Fcons (posn, | |
2910 | Fcons (Fcons (x, y), | |
2911 | Fcons (make_number (time), | |
2912 | Qnil)))), | |
2913 | Qnil)); | |
2914 | } | |
284f4730 JB |
2915 | } |
2916 | ||
68553292 | 2917 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 2918 | |
cd21b839 JB |
2919 | /* Construct a switch frame event. */ |
2920 | static Lisp_Object | |
2921 | make_lispy_switch_frame (frame) | |
2922 | Lisp_Object frame; | |
2923 | { | |
2924 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
2925 | } | |
0a7f1fc0 JB |
2926 | \f |
2927 | /* Manipulating modifiers. */ | |
284f4730 | 2928 | |
0a7f1fc0 | 2929 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 2930 | |
0a7f1fc0 JB |
2931 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
2932 | SYMBOL's name of the end of the modifiers; the string from this | |
2933 | position is the unmodified symbol name. | |
284f4730 | 2934 | |
0a7f1fc0 JB |
2935 | This doesn't use any caches. */ |
2936 | static int | |
2937 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 2938 | Lisp_Object symbol; |
0a7f1fc0 | 2939 | int *modifier_end; |
284f4730 JB |
2940 | { |
2941 | struct Lisp_String *name; | |
2942 | int i; | |
2943 | int modifiers; | |
284f4730 JB |
2944 | |
2945 | CHECK_SYMBOL (symbol, 1); | |
2946 | ||
2947 | modifiers = 0; | |
2948 | name = XSYMBOL (symbol)->name; | |
2949 | ||
284f4730 | 2950 | |
0a7f1fc0 | 2951 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
2952 | switch (name->data[i]) |
2953 | { | |
0a7f1fc0 JB |
2954 | #define SINGLE_LETTER_MOD(bit) \ |
2955 | if (name->data[i+1] != '-') \ | |
2956 | goto no_more_modifiers; \ | |
2957 | modifiers |= bit; \ | |
fce33686 | 2958 | i += 2; |
0a7f1fc0 JB |
2959 | |
2960 | case 'A': | |
2961 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
2962 | break; |
2963 | ||
2964 | case 'C': | |
0a7f1fc0 | 2965 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
2966 | break; |
2967 | ||
2968 | case 'H': | |
0a7f1fc0 | 2969 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
2970 | break; |
2971 | ||
2972 | case 'M': | |
0a7f1fc0 | 2973 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
2974 | break; |
2975 | ||
2976 | case 'S': | |
0a7f1fc0 | 2977 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
2978 | break; |
2979 | ||
2980 | case 's': | |
86e5706b | 2981 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
2982 | break; |
2983 | ||
fce33686 JB |
2984 | case 'd': |
2985 | if (i + 5 > name->size) | |
2986 | goto no_more_modifiers; | |
2987 | if (! strncmp (name->data + i, "drag-", 5)) | |
2988 | { | |
fce33686 JB |
2989 | modifiers |= drag_modifier; |
2990 | i += 5; | |
2991 | } | |
2992 | else if (! strncmp (name->data + i, "down-", 5)) | |
2993 | { | |
fce33686 JB |
2994 | modifiers |= down_modifier; |
2995 | i += 5; | |
2996 | } | |
fbcd35bd JB |
2997 | else if (i + 7 <= name->size |
2998 | && ! strncmp (name->data + i, "double-", 7)) | |
2999 | { | |
3000 | modifiers |= double_modifier; | |
3001 | i += 7; | |
3002 | } | |
3003 | else | |
3004 | goto no_more_modifiers; | |
3005 | break; | |
3006 | ||
3007 | case 't': | |
3008 | if (i + 7 > name->size) | |
3009 | goto no_more_modifiers; | |
3010 | if (! strncmp (name->data + i, "triple-", 7)) | |
3011 | { | |
3012 | modifiers |= triple_modifier; | |
3013 | i += 7; | |
3014 | } | |
fce33686 JB |
3015 | else |
3016 | goto no_more_modifiers; | |
284f4730 JB |
3017 | break; |
3018 | ||
3019 | default: | |
3020 | goto no_more_modifiers; | |
0a7f1fc0 JB |
3021 | |
3022 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
3023 | } |
3024 | no_more_modifiers: | |
3025 | ||
0a7f1fc0 | 3026 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3027 | if (! (modifiers & (down_modifier | drag_modifier |
3028 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3029 | && i + 7 == name->size |
4bb994d1 | 3030 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3031 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3032 | modifiers |= click_modifier; |
3033 | ||
3034 | if (modifier_end) | |
3035 | *modifier_end = i; | |
3036 | ||
3037 | return modifiers; | |
3038 | } | |
3039 | ||
3040 | ||
3041 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
3042 | prepended to the string BASE[0..BASE_LEN-1]. | |
3043 | This doesn't use any caches. */ | |
3044 | static Lisp_Object | |
3045 | apply_modifiers_uncached (modifiers, base, base_len) | |
3046 | int modifiers; | |
3047 | char *base; | |
3048 | int base_len; | |
3049 | { | |
3050 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3051 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3052 | reference to it. */ | |
3053 | char *new_mods = | |
fbcd35bd | 3054 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3055 | int mod_len; |
284f4730 | 3056 | |
284f4730 | 3057 | { |
0a7f1fc0 JB |
3058 | char *p = new_mods; |
3059 | ||
3060 | /* Only the event queue may use the `up' modifier; it should always | |
3061 | be turned into a click or drag event before presented to lisp code. */ | |
3062 | if (modifiers & up_modifier) | |
3063 | abort (); | |
3064 | ||
3065 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3066 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3067 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3068 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3069 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3070 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3071 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3072 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3073 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3074 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3075 | /* The click modifier is denoted by the absence of other modifiers. */ |
3076 | ||
3077 | *p = '\0'; | |
3078 | ||
3079 | mod_len = p - new_mods; | |
3080 | } | |
284f4730 | 3081 | |
0a7f1fc0 | 3082 | { |
9b8eb840 | 3083 | Lisp_Object new_name; |
0a7f1fc0 | 3084 | |
9b8eb840 | 3085 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3086 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3087 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3088 | |
3089 | return Fintern (new_name, Qnil); | |
3090 | } | |
3091 | } | |
3092 | ||
3093 | ||
0a7f1fc0 JB |
3094 | static char *modifier_names[] = |
3095 | { | |
fbcd35bd | 3096 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3097 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3098 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3099 | }; |
80645119 | 3100 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3101 | |
3102 | static Lisp_Object modifier_symbols; | |
3103 | ||
3104 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3105 | static Lisp_Object | |
3106 | lispy_modifier_list (modifiers) | |
3107 | int modifiers; | |
3108 | { | |
3109 | Lisp_Object modifier_list; | |
3110 | int i; | |
3111 | ||
3112 | modifier_list = Qnil; | |
80645119 | 3113 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3114 | if (modifiers & (1<<i)) |
80645119 JB |
3115 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3116 | modifier_list); | |
0a7f1fc0 JB |
3117 | |
3118 | return modifier_list; | |
3119 | } | |
3120 | ||
3121 | ||
3122 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3123 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3124 | MASK is the set of modifiers present in SYMBOL's name. | |
3125 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3126 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3127 | Qevent_symbol_elements property. */ | |
3128 | static Lisp_Object | |
3129 | parse_modifiers (symbol) | |
3130 | Lisp_Object symbol; | |
3131 | { | |
9b8eb840 | 3132 | Lisp_Object elements; |
0a7f1fc0 | 3133 | |
9b8eb840 | 3134 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3135 | if (CONSP (elements)) |
3136 | return elements; | |
3137 | else | |
3138 | { | |
3139 | int end; | |
3140 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3141 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3142 | Lisp_Object mask; |
3143 | ||
9b8eb840 KH |
3144 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3145 | XSYMBOL (symbol)->name->size - end), | |
3146 | Qnil); | |
3147 | ||
734fef94 JB |
3148 | if (modifiers & ~((1<<VALBITS) - 1)) |
3149 | abort (); | |
0a7f1fc0 JB |
3150 | XFASTINT (mask) = modifiers; |
3151 | elements = Fcons (unmodified, Fcons (mask, Qnil)); | |
3152 | ||
3153 | /* Cache the parsing results on SYMBOL. */ | |
3154 | Fput (symbol, Qevent_symbol_element_mask, | |
3155 | elements); | |
3156 | Fput (symbol, Qevent_symbol_elements, | |
3157 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3158 | ||
3159 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3160 | it would be nice to put that in unmodified's cache. | |
3161 | But we can't, since we're not sure that parse_modifiers is | |
3162 | canonical. */ | |
3163 | ||
3164 | return elements; | |
3165 | } | |
3166 | } | |
3167 | ||
3168 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3169 | BASE must be unmodified. | |
3170 | ||
3171 | This is like apply_modifiers_uncached, but uses BASE's | |
3172 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3173 | Qevent_symbol_elements properties, since it has that info anyway. |
3174 | ||
3175 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3176 | the modified symbol. */ | |
0a7f1fc0 JB |
3177 | static Lisp_Object |
3178 | apply_modifiers (modifiers, base) | |
3179 | int modifiers; | |
3180 | Lisp_Object base; | |
3181 | { | |
7b4aedb9 | 3182 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3183 | |
80645119 JB |
3184 | /* Mask out upper bits. We don't know where this value's been. */ |
3185 | modifiers &= (1<<VALBITS) - 1; | |
3186 | ||
0a7f1fc0 | 3187 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3188 | cache = Fget (base, Qmodifier_cache); |
cd21b839 | 3189 | XFASTINT (index) = (modifiers & ~click_modifier); |
697e4895 | 3190 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3191 | |
3192 | if (CONSP (entry)) | |
7b4aedb9 JB |
3193 | new_symbol = XCONS (entry)->cdr; |
3194 | else | |
3195 | { | |
3196 | /* We have to create the symbol ourselves. */ | |
3197 | new_symbol = apply_modifiers_uncached (modifiers, | |
3198 | XSYMBOL (base)->name->data, | |
3199 | XSYMBOL (base)->name->size); | |
3200 | ||
3201 | /* Add the new symbol to the base's cache. */ | |
3202 | entry = Fcons (index, new_symbol); | |
3203 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3204 | ||
3205 | /* We have the parsing info now for free, so add it to the caches. */ | |
3206 | XFASTINT (index) = modifiers; | |
3207 | Fput (new_symbol, Qevent_symbol_element_mask, | |
3208 | Fcons (base, Fcons (index, Qnil))); | |
3209 | Fput (new_symbol, Qevent_symbol_elements, | |
3210 | Fcons (base, lispy_modifier_list (modifiers))); | |
3211 | } | |
0a7f1fc0 | 3212 | |
7b4aedb9 JB |
3213 | /* Make sure this symbol is of the same kind as BASE. |
3214 | ||
3215 | You'd think we could just set this once and for all when we | |
3216 | intern the symbol above, but reorder_modifiers may call us when | |
3217 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3218 | because it has a Qmodifier_cache property it must have its |
3219 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3220 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3221 | { | |
9b8eb840 | 3222 | Lisp_Object kind; |
7b4aedb9 | 3223 | |
9b8eb840 | 3224 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3225 | if (! NILP (kind)) |
3226 | Fput (new_symbol, Qevent_kind, kind); | |
3227 | } | |
3228 | ||
3229 | return new_symbol; | |
0a7f1fc0 JB |
3230 | } |
3231 | ||
3232 | ||
3233 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3234 | return a symbol with the modifiers placed in the canonical order. | |
3235 | Canonical order is alphabetical, except for down and drag, which | |
3236 | always come last. The 'click' modifier is never written out. | |
3237 | ||
3238 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3239 | and M-C-foo end up being equivalent in the keymap. */ | |
3240 | ||
3241 | Lisp_Object | |
3242 | reorder_modifiers (symbol) | |
3243 | Lisp_Object symbol; | |
3244 | { | |
3245 | /* It's hopefully okay to write the code this way, since everything | |
3246 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3247 | Lisp_Object parsed; |
0a7f1fc0 | 3248 | |
9b8eb840 | 3249 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3250 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3251 | XCONS (parsed)->car); | |
3252 | } | |
3253 | ||
3254 | ||
284f4730 JB |
3255 | /* For handling events, we often want to produce a symbol whose name |
3256 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3257 | to some base, like the name of a function key or mouse button. | |
3258 | modify_event_symbol produces symbols of this sort. | |
3259 | ||
3260 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3261 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3262 | in the table. | |
3263 | ||
80e4aa30 RS |
3264 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3265 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3266 | ||
284f4730 JB |
3267 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3268 | persist between calls to modify_event_symbol that it can use to | |
3269 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3270 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3271 | |
3272 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3273 | ||
3274 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3275 | whose prefixes should be applied to the symbol name. | |
3276 | ||
3277 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3278 | the returned symbol. |
3279 | ||
3280 | The symbols we create are supposed to have an | |
eb8c3be9 | 3281 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3282 | in the symbol's name. */ |
3283 | ||
284f4730 | 3284 | static Lisp_Object |
80e4aa30 RS |
3285 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3286 | name_table, symbol_table, table_size) | |
284f4730 JB |
3287 | int symbol_num; |
3288 | unsigned modifiers; | |
3289 | Lisp_Object symbol_kind; | |
80e4aa30 | 3290 | Lisp_Object name_alist; |
284f4730 JB |
3291 | char **name_table; |
3292 | Lisp_Object *symbol_table; | |
3293 | int table_size; | |
3294 | { | |
80e4aa30 RS |
3295 | Lisp_Object value; |
3296 | Lisp_Object symbol_int; | |
3297 | ||
3298 | XSET (symbol_int, Lisp_Int, symbol_num); | |
284f4730 JB |
3299 | |
3300 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3301 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3302 | return Qnil; |
284f4730 | 3303 | |
80e4aa30 RS |
3304 | if (CONSP (*symbol_table)) |
3305 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3306 | ||
0a7f1fc0 | 3307 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3308 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3309 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3310 | we've never used that symbol before. */ | |
80e4aa30 | 3311 | else |
88cb0656 | 3312 | { |
80e4aa30 RS |
3313 | if (! VECTORP (*symbol_table) |
3314 | || XVECTOR (*symbol_table)->size != table_size) | |
3315 | { | |
3316 | Lisp_Object size; | |
0a7f1fc0 | 3317 | |
80e4aa30 RS |
3318 | XFASTINT (size) = table_size; |
3319 | *symbol_table = Fmake_vector (size, Qnil); | |
3320 | } | |
284f4730 | 3321 | |
80e4aa30 RS |
3322 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3323 | } | |
284f4730 | 3324 | |
0a7f1fc0 | 3325 | /* Have we already used this symbol before? */ |
80e4aa30 | 3326 | if (NILP (value)) |
284f4730 | 3327 | { |
0a7f1fc0 | 3328 | /* No; let's create it. */ |
80e4aa30 | 3329 | if (!NILP (name_alist)) |
b64b4075 | 3330 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3331 | else if (name_table[symbol_num]) |
3332 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3333 | |
3334 | if (NILP (value)) | |
d1f50460 RS |
3335 | { |
3336 | char buf[20]; | |
3337 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3338 | value = intern (buf); |
d1f50460 | 3339 | } |
0a7f1fc0 | 3340 | |
80e4aa30 RS |
3341 | if (CONSP (*symbol_table)) |
3342 | *symbol_table = Fcons (value, *symbol_table); | |
3343 | else | |
3344 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3345 | ||
0a7f1fc0 JB |
3346 | /* Fill in the cache entries for this symbol; this also |
3347 | builds the Qevent_symbol_elements property, which the user | |
3348 | cares about. */ | |
80e4aa30 RS |
3349 | apply_modifiers (modifiers & click_modifier, value); |
3350 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3351 | } |
88cb0656 | 3352 | |
0a7f1fc0 | 3353 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3354 | return apply_modifiers (modifiers, value); |
284f4730 | 3355 | } |
0a7f1fc0 | 3356 | |
284f4730 | 3357 | \f |
284f4730 JB |
3358 | /* Store into *addr a value nonzero if terminal input chars are available. |
3359 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3360 | but works even if FIONREAD does not exist. | |
3361 | (In fact, this may actually read some input.) */ | |
3362 | ||
3363 | static void | |
3364 | get_input_pending (addr) | |
3365 | int *addr; | |
3366 | { | |
3367 | /* First of all, have we already counted some input? */ | |
3368 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3369 | ||
3370 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3371 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3372 | return; | |
3373 | ||
3374 | /* Try to read some input and see how much we get. */ | |
3375 | gobble_input (0); | |
3376 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3377 | } | |
3378 | ||
3379 | /* Interface to read_avail_input, blocking SIGIO if necessary. */ | |
3380 | ||
3381 | int | |
3382 | gobble_input (expected) | |
3383 | int expected; | |
3384 | { | |
3385 | #ifndef VMS | |
3386 | #ifdef SIGIO | |
3387 | if (interrupt_input) | |
3388 | { | |
32676c08 | 3389 | SIGMASKTYPE mask; |
e065a56e | 3390 | mask = sigblockx (SIGIO); |
284f4730 | 3391 | read_avail_input (expected); |
e065a56e | 3392 | sigsetmask (mask); |
284f4730 JB |
3393 | } |
3394 | else | |
3395 | #endif | |
3396 | read_avail_input (expected); | |
3397 | #endif | |
3398 | } | |
a8015ab5 | 3399 | |
241ceaf7 RS |
3400 | /* Put a buffer_switch_event in the buffer |
3401 | so that read_key_sequence will notice the new current buffer. */ | |
3402 | ||
a8015ab5 KH |
3403 | record_asynch_buffer_change () |
3404 | { | |
3405 | struct input_event event; | |
3406 | event.kind = buffer_switch_event; | |
3407 | event.frame_or_window = Qnil; | |
241ceaf7 RS |
3408 | |
3409 | /* Make sure no interrupt happens while storing the event. */ | |
3410 | #ifdef SIGIO | |
3411 | if (interrupt_input) | |
3412 | { | |
3413 | SIGMASKTYPE mask; | |
3414 | mask = sigblockx (SIGIO); | |
3415 | kbd_buffer_store_event (&event); | |
3416 | sigsetmask (mask); | |
3417 | } | |
3418 | else | |
3419 | #endif | |
3420 | { | |
3421 | stop_polling (); | |
3422 | kbd_buffer_store_event (&event); | |
3423 | start_polling (); | |
3424 | } | |
a8015ab5 | 3425 | } |
284f4730 JB |
3426 | \f |
3427 | #ifndef VMS | |
3428 | ||
3429 | /* Read any terminal input already buffered up by the system | |
3430 | into the kbd_buffer, but do not wait. | |
3431 | ||
3432 | EXPECTED should be nonzero if the caller knows there is some input. | |
3433 | ||
3434 | Except on VMS, all input is read by this function. | |
3435 | If interrupt_input is nonzero, this function MUST be called | |
3436 | only when SIGIO is blocked. | |
3437 | ||
3438 | Returns the number of keyboard chars read, or -1 meaning | |
3439 | this is a bad time to try to read input. */ | |
3440 | ||
3441 | static int | |
3442 | read_avail_input (expected) | |
3443 | int expected; | |
3444 | { | |
3445 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3446 | register int i; | |
3447 | int nread; | |
3448 | ||
3449 | if (read_socket_hook) | |
3450 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
3451 | nread = (*read_socket_hook) (0, buf, KBD_BUFFER_SIZE, expected, expected); | |
3452 | else | |
3453 | { | |
17270835 RS |
3454 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3455 | the kbd_buffer can really hold. That may prevent loss | |
3456 | of characters on some systems when input is stuffed at us. */ | |
3457 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3458 | int n_to_read; |
284f4730 | 3459 | |
58788063 | 3460 | /* Determine how many characters we should *try* to read. */ |
80e4aa30 | 3461 | #ifdef MSDOS |
58788063 RS |
3462 | n_to_read = dos_keysns (); |
3463 | if (n_to_read == 0) | |
3464 | return 0; | |
c3a2738c | 3465 | #else /* not MSDOS */ |
284f4730 JB |
3466 | #ifdef FIONREAD |
3467 | /* Find out how much input is available. */ | |
58788063 | 3468 | if (ioctl (0, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3469 | /* Formerly simply reported no input, but that sometimes led to |
3470 | a failure of Emacs to terminate. | |
3471 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3472 | /* ??? Is it really right to send the signal just to this process |
3473 | rather than to the whole process group? | |
3474 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3475 | kill (getpid (), SIGHUP); |
58788063 | 3476 | if (n_to_read == 0) |
284f4730 | 3477 | return 0; |
58788063 RS |
3478 | if (n_to_read > sizeof cbuf) |
3479 | n_to_read = sizeof cbuf; | |
284f4730 | 3480 | #else /* no FIONREAD */ |
482952ef | 3481 | #if defined(USG) || defined(DGUX) |
284f4730 | 3482 | /* Read some input if available, but don't wait. */ |
58788063 | 3483 | n_to_read = sizeof cbuf; |
284f4730 JB |
3484 | fcntl (fileno (stdin), F_SETFL, O_NDELAY); |
3485 | #else | |
3486 | you lose; | |
3487 | #endif | |
3488 | #endif | |
80e4aa30 | 3489 | #endif /* not MSDOS */ |
284f4730 | 3490 | |
58788063 RS |
3491 | /* Now read; for one reason or another, this will not block. |
3492 | NREAD is set to the number of chars read. */ | |
9134775b | 3493 | do |
284f4730 | 3494 | { |
80e4aa30 RS |
3495 | #ifdef MSDOS |
3496 | cbuf[0] = dos_keyread(); | |
3497 | nread = 1; | |
3498 | #else | |
58788063 | 3499 | nread = read (fileno (stdin), cbuf, n_to_read); |
80e4aa30 | 3500 | #endif |
762f2b92 | 3501 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3502 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3503 | This looks incorrect, but it isn't, because _BSD causes | |
3504 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3505 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3506 | if (nread == 0) |
80e4aa30 | 3507 | kill (0, SIGHUP); |
284f4730 | 3508 | #endif |
9134775b | 3509 | } |
791587ee KH |
3510 | while ( |
3511 | /* We used to retry the read if it was interrupted. | |
3512 | But this does the wrong thing when O_NDELAY causes | |
3513 | an EAGAIN error. Does anybody know of a situation | |
3514 | where a retry is actually needed? */ | |
3515 | #if 0 | |
3516 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3517 | #ifdef EFAULT |
9134775b | 3518 | || errno == EFAULT |
80e4aa30 | 3519 | #endif |
284f4730 | 3520 | #ifdef EBADSLT |
9134775b | 3521 | || errno == EBADSLT |
284f4730 | 3522 | #endif |
791587ee KH |
3523 | ) |
3524 | #else | |
3525 | 0 | |
3526 | #endif | |
3527 | ); | |
284f4730 JB |
3528 | |
3529 | #ifndef FIONREAD | |
02c2c53f | 3530 | #if defined (USG) || defined (DGUX) |
284f4730 | 3531 | fcntl (fileno (stdin), F_SETFL, 0); |
02c2c53f | 3532 | #endif /* USG or DGUX */ |
284f4730 JB |
3533 | #endif /* no FIONREAD */ |
3534 | for (i = 0; i < nread; i++) | |
3535 | { | |
3536 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3537 | buf[i].modifiers = 0; |
b04904fb | 3538 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3539 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3540 | if (meta_key != 2) |
3541 | cbuf[i] &= ~0x80; | |
86e5706b | 3542 | |
7b4aedb9 JB |
3543 | XSET (buf[i].code, Lisp_Int, cbuf[i]); |
3544 | #ifdef MULTI_FRAME | |
3545 | XSET (buf[i].frame_or_window, Lisp_Frame, selected_frame); | |
3546 | #else | |
3547 | buf[i].frame_or_window = Qnil; | |
3548 | #endif | |
284f4730 JB |
3549 | } |
3550 | } | |
3551 | ||
3552 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3553 | for (i = 0; i < nread; i++) | |
3554 | { | |
3555 | kbd_buffer_store_event (&buf[i]); | |
3556 | /* Don't look at input that follows a C-g too closely. | |
3557 | This reduces lossage due to autorepeat on C-g. */ | |
3558 | if (buf[i].kind == ascii_keystroke | |
3559 | && XINT(buf[i].code) == quit_char) | |
3560 | break; | |
3561 | } | |
3562 | ||
3563 | return nread; | |
3564 | } | |
3565 | #endif /* not VMS */ | |
3566 | \f | |
3567 | #ifdef SIGIO /* for entire page */ | |
3568 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3569 | ||
2ce30ea2 | 3570 | SIGTYPE |
284f4730 JB |
3571 | input_available_signal (signo) |
3572 | int signo; | |
3573 | { | |
3574 | /* Must preserve main program's value of errno. */ | |
3575 | int old_errno = errno; | |
3576 | #ifdef BSD4_1 | |
3577 | extern int select_alarmed; | |
3578 | #endif | |
3579 | ||
3580 | #ifdef USG | |
3581 | /* USG systems forget handlers when they are used; | |
3582 | must reestablish each time */ | |
3583 | signal (signo, input_available_signal); | |
3584 | #endif /* USG */ | |
3585 | ||
3586 | #ifdef BSD4_1 | |
3587 | sigisheld (SIGIO); | |
3588 | #endif | |
3589 | ||
ffd56f97 JB |
3590 | if (input_available_clear_time) |
3591 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3592 | |
3593 | while (1) | |
3594 | { | |
3595 | int nread; | |
3596 | nread = read_avail_input (1); | |
3597 | /* -1 means it's not ok to read the input now. | |
3598 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3599 | 0 means there was no keyboard input available. */ | |
3600 | if (nread <= 0) | |
3601 | break; | |
3602 | ||
3603 | #ifdef BSD4_1 | |
3604 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3605 | #endif | |
3606 | } | |
3607 | ||
3608 | #ifdef BSD4_1 | |
3609 | sigfree (); | |
3610 | #endif | |
3611 | errno = old_errno; | |
3612 | } | |
3613 | #endif /* SIGIO */ | |
ad163903 JB |
3614 | |
3615 | /* Send ourselves a SIGIO. | |
3616 | ||
3617 | This function exists so that the UNBLOCK_INPUT macro in | |
3618 | blockinput.h can have some way to take care of input we put off | |
3619 | dealing with, without assuming that every file which uses | |
3620 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3621 | void | |
3622 | reinvoke_input_signal () | |
3623 | { | |
3624 | #ifdef SIGIO | |
3625 | kill (0, SIGIO); | |
3626 | #endif | |
3627 | } | |
3628 | ||
3629 | ||
284f4730 JB |
3630 | \f |
3631 | /* Return the prompt-string of a sparse keymap. | |
3632 | This is the first element which is a string. | |
3633 | Return nil if there is none. */ | |
3634 | ||
3635 | Lisp_Object | |
3636 | map_prompt (map) | |
3637 | Lisp_Object map; | |
3638 | { | |
3639 | while (CONSP (map)) | |
3640 | { | |
3641 | register Lisp_Object tem; | |
3642 | tem = Fcar (map); | |
3643 | if (XTYPE (tem) == Lisp_String) | |
3644 | return tem; | |
3645 | map = Fcdr (map); | |
3646 | } | |
3647 | return Qnil; | |
3648 | } | |
3649 | ||
b7c49376 RS |
3650 | static void menu_bar_item (); |
3651 | static void menu_bar_one_keymap (); | |
3652 | ||
3653 | /* These variables hold the vector under construction within | |
3654 | menu_bar_items and its subroutines, and the current index | |
3655 | for storing into that vector. */ | |
3656 | static Lisp_Object menu_bar_items_vector; | |
3657 | static Lisp_Object menu_bar_items_index; | |
5ec75a55 | 3658 | |
b7c49376 RS |
3659 | /* Return a vector of menu items for a menu bar, appropriate |
3660 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 3661 | KEY STRING MAPLIST. |
b7c49376 RS |
3662 | |
3663 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
3664 | |
3665 | Lisp_Object | |
b7c49376 RS |
3666 | menu_bar_items (old) |
3667 | Lisp_Object old; | |
5ec75a55 RS |
3668 | { |
3669 | /* The number of keymaps we're scanning right now, and the number of | |
3670 | keymaps we have allocated space for. */ | |
3671 | int nmaps; | |
3672 | ||
3673 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3674 | in the current keymaps, or nil where it is not a prefix. */ | |
3675 | Lisp_Object *maps; | |
3676 | ||
9f9c0e27 | 3677 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3678 | |
3679 | Lisp_Object result; | |
3680 | ||
3681 | int mapno; | |
47d319aa | 3682 | Lisp_Object oquit; |
5ec75a55 | 3683 | |
b7c49376 RS |
3684 | int i; |
3685 | ||
3686 | struct gcpro gcpro1; | |
3687 | ||
db60d856 JB |
3688 | /* In order to build the menus, we need to call the keymap |
3689 | accessors. They all call QUIT. But this function is called | |
3690 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3691 | quitting while building the menus. |
3692 | We do this instead of specbind because (1) errors will clear it anyway | |
3693 | and (2) this avoids risk of specpdl overflow. */ | |
3694 | oquit = Vinhibit_quit; | |
3695 | Vinhibit_quit = Qt; | |
db60d856 | 3696 | |
b7c49376 RS |
3697 | if (!NILP (old)) |
3698 | menu_bar_items_vector = old; | |
3699 | else | |
3700 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
3701 | menu_bar_items_index = 0; | |
3702 | ||
3703 | GCPRO1 (menu_bar_items_vector); | |
3704 | ||
5ec75a55 RS |
3705 | /* Build our list of keymaps. |
3706 | If we recognize a function key and replace its escape sequence in | |
3707 | keybuf with its symbol, or if the sequence starts with a mouse | |
3708 | click and we need to switch buffers, we jump back here to rebuild | |
3709 | the initial keymaps from the current buffer. */ | |
3710 | { | |
3711 | Lisp_Object *tmaps; | |
3712 | ||
9dd3131c RS |
3713 | if (!NILP (Voverriding_local_map)) |
3714 | { | |
3715 | nmaps = 2; | |
3716 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3717 | maps[0] = Voverriding_local_map; | |
3718 | } | |
3719 | else | |
3720 | { | |
3721 | nmaps = current_minor_maps (0, &tmaps) + 2; | |
3722 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3723 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 3724 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 3725 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 3726 | #else |
9dd3131c | 3727 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3728 | #endif |
9dd3131c | 3729 | } |
7e6992e0 | 3730 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3731 | } |
3732 | ||
3733 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3734 | ||
3735 | result = Qnil; | |
3736 | ||
e58aa385 | 3737 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3738 | { |
3739 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3740 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3741 | else |
3742 | def = Qnil; | |
3743 | ||
3744 | tem = Fkeymapp (def); | |
3745 | if (!NILP (tem)) | |
b7c49376 | 3746 | menu_bar_one_keymap (def); |
5ec75a55 RS |
3747 | } |
3748 | ||
b7c49376 RS |
3749 | /* Move to the end those items that should be at the end. */ |
3750 | ||
9f9c0e27 RS |
3751 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
3752 | { | |
b7c49376 RS |
3753 | int i; |
3754 | int end = menu_bar_items_index; | |
3755 | ||
3756 | for (i = 0; i < end; i += 3) | |
3757 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3758 | { | |
0301268e RS |
3759 | Lisp_Object tem0, tem1, tem2; |
3760 | /* Move the item at index I to the end, | |
3761 | shifting all the others forward. */ | |
3762 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
3763 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
3764 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3765 | if (end > i + 3) | |
3766 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3767 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3768 | (end - i - 3) * sizeof (Lisp_Object)); | |
3769 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
3770 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
3771 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
3772 | break; | |
b7c49376 RS |
3773 | } |
3774 | } | |
9f9c0e27 | 3775 | |
b7c49376 RS |
3776 | /* Add nil, nil, nil at the end. */ |
3777 | i = menu_bar_items_index; | |
3778 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3779 | { | |
3780 | Lisp_Object tem; | |
3781 | int newsize = 2 * i; | |
3782 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3783 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3784 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3785 | menu_bar_items_vector = tem; | |
9f9c0e27 | 3786 | } |
b7c49376 RS |
3787 | /* Add this item. */ |
3788 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3789 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3790 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
3791 | menu_bar_items_index = i; | |
a73c5e29 | 3792 | |
47d319aa | 3793 | Vinhibit_quit = oquit; |
b7c49376 RS |
3794 | UNGCPRO; |
3795 | return menu_bar_items_vector; | |
5ec75a55 RS |
3796 | } |
3797 | \f | |
3798 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 3799 | in menu_bar_items_vector. */ |
5ec75a55 | 3800 | |
b7c49376 RS |
3801 | static void |
3802 | menu_bar_one_keymap (keymap) | |
3803 | Lisp_Object keymap; | |
5ec75a55 RS |
3804 | { |
3805 | Lisp_Object tail, item, key, binding, item_string, table; | |
3806 | ||
3807 | /* Loop over all keymap entries that have menu strings. */ | |
3808 | for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr) | |
3809 | { | |
3810 | item = XCONS (tail)->car; | |
3811 | if (XTYPE (item) == Lisp_Cons) | |
3812 | { | |
3813 | key = XCONS (item)->car; | |
3814 | binding = XCONS (item)->cdr; | |
3815 | if (XTYPE (binding) == Lisp_Cons) | |
3816 | { | |
3817 | item_string = XCONS (binding)->car; | |
3818 | if (XTYPE (item_string) == Lisp_String) | |
b7c49376 | 3819 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3820 | } |
e58aa385 | 3821 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3822 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
3823 | } |
3824 | else if (XTYPE (item) == Lisp_Vector) | |
3825 | { | |
3826 | /* Loop over the char values represented in the vector. */ | |
3827 | int len = XVECTOR (item)->size; | |
3828 | int c; | |
3829 | for (c = 0; c < len; c++) | |
3830 | { | |
3831 | Lisp_Object character; | |
3832 | XFASTINT (character) = c; | |
3833 | binding = XVECTOR (item)->contents[c]; | |
3834 | if (XTYPE (binding) == Lisp_Cons) | |
3835 | { | |
3836 | item_string = XCONS (binding)->car; | |
3837 | if (XTYPE (item_string) == Lisp_String) | |
b7c49376 | 3838 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 3839 | } |
e58aa385 | 3840 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 3841 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
3842 | } |
3843 | } | |
3844 | } | |
5ec75a55 RS |
3845 | } |
3846 | ||
047a8ea7 RS |
3847 | /* This is used as the handler when calling internal_condition_case_1. */ |
3848 | ||
3849 | static Lisp_Object | |
3850 | menu_bar_item_1 (arg) | |
3851 | Lisp_Object arg; | |
3852 | { | |
3853 | return Qnil; | |
3854 | } | |
3855 | ||
f5e09c8b RS |
3856 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
3857 | If there's already an item for KEY, add this DEF to it. */ | |
3858 | ||
b7c49376 RS |
3859 | static void |
3860 | menu_bar_item (key, item_string, def) | |
3861 | Lisp_Object key, item_string, def; | |
5ec75a55 | 3862 | { |
e58aa385 | 3863 | Lisp_Object tem; |
5ec75a55 | 3864 | Lisp_Object enabled; |
b7c49376 | 3865 | int i; |
5ec75a55 | 3866 | |
e58aa385 RS |
3867 | if (EQ (def, Qundefined)) |
3868 | { | |
f5e09c8b | 3869 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 3870 | discard any previously made menu bar item. */ |
b7c49376 RS |
3871 | |
3872 | for (i = 0; i < menu_bar_items_index; i += 3) | |
3873 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3874 | { | |
3875 | if (menu_bar_items_index > i + 3) | |
3876 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
3877 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
3878 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
3879 | menu_bar_items_index -= 3; | |
3880 | return; | |
3881 | } | |
8aa034e1 RS |
3882 | |
3883 | /* If there's no definition for this key yet, | |
3884 | just ignore `undefined'. */ | |
3885 | return; | |
e58aa385 RS |
3886 | } |
3887 | ||
5ec75a55 RS |
3888 | /* See if this entry is enabled. */ |
3889 | enabled = Qt; | |
3890 | ||
3891 | if (XTYPE (def) == Lisp_Symbol) | |
3892 | { | |
3893 | /* No property, or nil, means enable. | |
3894 | Otherwise, enable if value is not nil. */ | |
3895 | tem = Fget (def, Qmenu_enable); | |
3896 | if (!NILP (tem)) | |
047a8ea7 RS |
3897 | /* (condition-case nil (eval tem) |
3898 | (error nil)) */ | |
3899 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
3900 | menu_bar_item_1); | |
5ec75a55 RS |
3901 | } |
3902 | ||
b7c49376 RS |
3903 | /* Ignore this item if it's not enabled. */ |
3904 | if (NILP (enabled)) | |
3905 | return; | |
5ec75a55 | 3906 | |
f5e09c8b | 3907 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
3908 | for (i = 0; i < menu_bar_items_index; i += 3) |
3909 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
3910 | break; | |
3911 | ||
f5e09c8b | 3912 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
3913 | if (i == menu_bar_items_index) |
3914 | { | |
3915 | /* If vector is too small, get a bigger one. */ | |
3916 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
3917 | { | |
3918 | Lisp_Object tem; | |
3919 | int newsize = 2 * i; | |
3920 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
3921 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
3922 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
3923 | menu_bar_items_vector = tem; | |
3924 | } | |
3925 | /* Add this item. */ | |
3926 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
3927 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 3928 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
3929 | menu_bar_items_index = i; |
3930 | } | |
f5e09c8b RS |
3931 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
3932 | else | |
3933 | { | |
3934 | Lisp_Object old; | |
3935 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
3936 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
3937 | } | |
5ec75a55 RS |
3938 | } |
3939 | \f | |
dcc408a0 RS |
3940 | /* Read a character using menus based on maps in the array MAPS. |
3941 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
3942 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
3943 | |
3944 | PREV_EVENT is the previous input event, or nil if we are reading | |
3945 | the first event of a key sequence. | |
3946 | ||
6569cc8d JB |
3947 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
3948 | if we used a mouse menu to read the input, or zero otherwise. If | |
3949 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
3950 | |
3951 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
3952 | and the strings associated with various map elements. |
3953 | ||
3954 | This can be done with X menus or with menus put in the minibuf. | |
3955 | These are done in different ways, depending on how the input will be read. | |
3956 | Menus using X are done after auto-saving in read-char, getting the input | |
3957 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
3958 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 3959 | |
7617111f | 3960 | static Lisp_Object |
8150596a | 3961 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
3962 | int nmaps; |
3963 | Lisp_Object *maps; | |
3964 | Lisp_Object prev_event; | |
3965 | int *used_mouse_menu; | |
284f4730 | 3966 | { |
7d6de002 RS |
3967 | int mapno; |
3968 | register Lisp_Object name; | |
7d6de002 RS |
3969 | Lisp_Object rest, vector; |
3970 | ||
6569cc8d JB |
3971 | if (used_mouse_menu) |
3972 | *used_mouse_menu = 0; | |
284f4730 JB |
3973 | |
3974 | /* Use local over global Menu maps */ | |
3975 | ||
7d6de002 RS |
3976 | if (! menu_prompting) |
3977 | return Qnil; | |
3978 | ||
3979 | /* Get the menu name from the first map that has one (a prompt string). */ | |
3980 | for (mapno = 0; mapno < nmaps; mapno++) | |
3981 | { | |
3982 | name = map_prompt (maps[mapno]); | |
3983 | if (!NILP (name)) | |
3984 | break; | |
3985 | } | |
284f4730 | 3986 | |
7d6de002 | 3987 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 3988 | if (mapno >= nmaps) |
7d6de002 RS |
3989 | return Qnil; |
3990 | ||
dbc4e1c1 JB |
3991 | #ifdef HAVE_X_WINDOWS |
3992 | #ifdef HAVE_X_MENU | |
7d6de002 RS |
3993 | /* If we got to this point via a mouse click, |
3994 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 3995 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
3996 | { |
3997 | /* Display the menu and get the selection. */ | |
3998 | Lisp_Object *realmaps | |
3999 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4000 | Lisp_Object value; | |
4001 | int nmaps1 = 0; | |
4002 | ||
4003 | /* Use the maps that are not nil. */ | |
4004 | for (mapno = 0; mapno < nmaps; mapno++) | |
4005 | if (!NILP (maps[mapno])) | |
4006 | realmaps[nmaps1++] = maps[mapno]; | |
4007 | ||
4008 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4009 | if (CONSP (value)) |
4010 | { | |
4011 | /* If we got more than one event, put all but the first | |
4012 | onto this list to be read later. | |
4013 | Return just the first event now. */ | |
24597608 RS |
4014 | Vunread_command_events |
4015 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4016 | value = XCONS (value)->car; |
4017 | } | |
1c90c381 | 4018 | else if (NILP (value)) |
dcc408a0 | 4019 | value = Qt; |
6569cc8d JB |
4020 | if (used_mouse_menu) |
4021 | *used_mouse_menu = 1; | |
7d6de002 RS |
4022 | return value; |
4023 | } | |
dbc4e1c1 JB |
4024 | #endif /* HAVE_X_MENU */ |
4025 | #endif /* HAVE_X_WINDOWS */ | |
8150596a RS |
4026 | return Qnil ; |
4027 | } | |
4028 | ||
4029 | static Lisp_Object | |
24597608 | 4030 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4031 | int commandflag ; |
4032 | int nmaps; | |
4033 | Lisp_Object *maps; | |
4034 | { | |
4035 | int mapno; | |
4036 | register Lisp_Object name; | |
4037 | int nlength; | |
4038 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4039 | char *menu = (char *) alloca (width + 4); | |
4040 | int idx = -1; | |
9fdbfdf8 | 4041 | int nobindings = 1; |
8150596a RS |
4042 | Lisp_Object rest, vector; |
4043 | ||
4044 | if (! menu_prompting) | |
4045 | return Qnil; | |
4046 | ||
4047 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4048 | for (mapno = 0; mapno < nmaps; mapno++) | |
4049 | { | |
4050 | name = map_prompt (maps[mapno]); | |
4051 | if (!NILP (name)) | |
4052 | break; | |
4053 | } | |
4054 | ||
4055 | /* If we don't have any menus, just read a character normally. */ | |
4056 | if (mapno >= nmaps) | |
4057 | return Qnil; | |
284f4730 JB |
4058 | |
4059 | /* Prompt string always starts with map's prompt, and a space. */ | |
4060 | strcpy (menu, XSTRING (name)->data); | |
4061 | nlength = XSTRING (name)->size; | |
7d6de002 | 4062 | menu[nlength++] = ':'; |
284f4730 JB |
4063 | menu[nlength++] = ' '; |
4064 | menu[nlength] = 0; | |
4065 | ||
7d6de002 RS |
4066 | /* Start prompting at start of first map. */ |
4067 | mapno = 0; | |
4068 | rest = maps[mapno]; | |
284f4730 JB |
4069 | |
4070 | /* Present the documented bindings, a line at a time. */ | |
4071 | while (1) | |
4072 | { | |
4073 | int notfirst = 0; | |
4074 | int i = nlength; | |
4075 | Lisp_Object obj; | |
4076 | int ch; | |
8150596a | 4077 | int orig_defn_macro ; |
284f4730 | 4078 | |
284f4730 | 4079 | /* Loop over elements of map. */ |
7d6de002 | 4080 | while (i < width) |
284f4730 | 4081 | { |
7d6de002 | 4082 | Lisp_Object s, elt; |
284f4730 | 4083 | |
7d6de002 RS |
4084 | /* If reached end of map, start at beginning of next map. */ |
4085 | if (NILP (rest)) | |
4086 | { | |
4087 | mapno++; | |
4088 | /* At end of last map, wrap around to first map if just starting, | |
4089 | or end this line if already have something on it. */ | |
4090 | if (mapno == nmaps) | |
284f4730 | 4091 | { |
8150596a | 4092 | mapno = 0; |
40932d1a | 4093 | if (notfirst || nobindings) break; |
284f4730 | 4094 | } |
7d6de002 | 4095 | rest = maps[mapno]; |
284f4730 | 4096 | } |
7d6de002 RS |
4097 | |
4098 | /* Look at the next element of the map. */ | |
4099 | if (idx >= 0) | |
4100 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4101 | else |
7d6de002 RS |
4102 | elt = Fcar_safe (rest); |
4103 | ||
4104 | if (idx < 0 && XTYPE (elt) == Lisp_Vector) | |
284f4730 | 4105 | { |
7d6de002 RS |
4106 | /* If we found a dense table in the keymap, |
4107 | advanced past it, but start scanning its contents. */ | |
4108 | rest = Fcdr_safe (rest); | |
4109 | vector = elt; | |
4110 | idx = 0; | |
284f4730 | 4111 | } |
7d6de002 RS |
4112 | else |
4113 | { | |
4114 | /* An ordinary element. */ | |
8150596a RS |
4115 | if ( idx < 0 ) |
4116 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4117 | else | |
4118 | s = Fcar_safe(elt); /* vector */ | |
7d6de002 RS |
4119 | if (XTYPE (s) != Lisp_String) |
4120 | /* Ignore the element if it has no prompt string. */ | |
4121 | ; | |
4122 | /* If we have room for the prompt string, add it to this line. | |
4123 | If this is the first on the line, always add it. */ | |
8150596a | 4124 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4125 | || !notfirst) |
4126 | { | |
4127 | int thiswidth; | |
284f4730 | 4128 | |
7d6de002 RS |
4129 | /* Punctuate between strings. */ |
4130 | if (notfirst) | |
4131 | { | |
4132 | strcpy (menu + i, ", "); | |
4133 | i += 2; | |
4134 | } | |
4135 | notfirst = 1; | |
8150596a | 4136 | nobindings = 0 ; |
7d6de002 RS |
4137 | |
4138 | /* Add as much of string as fits. */ | |
4139 | thiswidth = XSTRING (s)->size; | |
4140 | if (thiswidth + i > width) | |
4141 | thiswidth = width - i; | |
4142 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4143 | i += thiswidth; | |
8150596a | 4144 | menu[i] = 0; |
7d6de002 RS |
4145 | } |
4146 | else | |
4147 | { | |
4148 | /* If this element does not fit, end the line now, | |
4149 | and save the element for the next line. */ | |
4150 | strcpy (menu + i, "..."); | |
4151 | break; | |
4152 | } | |
4153 | ||
4154 | /* Move past this element. */ | |
8150596a | 4155 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4156 | /* Handle reaching end of dense table. */ |
4157 | idx = -1; | |
4158 | if (idx >= 0) | |
4159 | idx++; | |
4160 | else | |
4161 | rest = Fcdr_safe (rest); | |
4162 | } | |
284f4730 JB |
4163 | } |
4164 | ||
4165 | /* Prompt with that and read response. */ | |
4166 | message1 (menu); | |
8150596a RS |
4167 | |
4168 | /* Make believe its not a keyboard macro in case the help char | |
4169 | is pressed. Help characters are not recorded because menu prompting | |
4170 | is not used on replay. | |
4171 | */ | |
4172 | orig_defn_macro = defining_kbd_macro ; | |
4173 | defining_kbd_macro = 0 ; | |
3cb81011 KH |
4174 | do |
4175 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
4176 | while (XTYPE (obj) == Lisp_Buffer); | |
8150596a | 4177 | defining_kbd_macro = orig_defn_macro ; |
284f4730 JB |
4178 | |
4179 | if (XTYPE (obj) != Lisp_Int) | |
4180 | return obj; | |
4181 | else | |
4182 | ch = XINT (obj); | |
4183 | ||
f4255cd1 | 4184 | if (! EQ (obj, menu_prompt_more_char) |
284f4730 | 4185 | && (XTYPE (menu_prompt_more_char) != Lisp_Int |
f4255cd1 | 4186 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a RS |
4187 | { |
4188 | if ( defining_kbd_macro ) | |
4189 | store_kbd_macro_char(obj) ; | |
4190 | return obj; | |
4191 | } | |
4192 | /* Help char - go round again */ | |
284f4730 JB |
4193 | } |
4194 | } | |
284f4730 JB |
4195 | \f |
4196 | /* Reading key sequences. */ | |
4197 | ||
4198 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4199 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4200 | keymap, or nil otherwise. Return the index of the first keymap in | |
4201 | which KEY has any binding, or NMAPS if no map has a binding. | |
4202 | ||
4203 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4204 | followed by the corresponding non-meta character. Keymaps in | |
4205 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4206 | NEXT. | |
4207 | ||
4208 | When KEY is not defined in any of the keymaps, if it is an upper | |
4209 | case letter and there are bindings for the corresponding lower-case | |
4210 | letter, return the bindings for the lower-case letter. | |
e9bf89a0 RS |
4211 | We store 1 in *CASE_CONVERTED in this case. |
4212 | Otherwise, we don't change *CASE_CONVERTED. | |
284f4730 | 4213 | |
88cb0656 JB |
4214 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4215 | unmodified. | |
4216 | ||
284f4730 JB |
4217 | NEXT may == CURRENT. */ |
4218 | ||
4219 | static int | |
e9bf89a0 | 4220 | follow_key (key, nmaps, current, defs, next, case_converted) |
284f4730 JB |
4221 | Lisp_Object key; |
4222 | Lisp_Object *current, *defs, *next; | |
4223 | int nmaps; | |
e9bf89a0 | 4224 | int *case_converted; |
284f4730 JB |
4225 | { |
4226 | int i, first_binding; | |
4227 | ||
4228 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4229 | followed by the corresponding non-meta character. */ | |
86e5706b | 4230 | if (XTYPE (key) == Lisp_Int && (XINT (key) & CHAR_META)) |
284f4730 JB |
4231 | { |
4232 | for (i = 0; i < nmaps; i++) | |
4233 | if (! NILP (current[i])) | |
4234 | { | |
cd21b839 | 4235 | next[i] = |
e74fbc70 | 4236 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4237 | |
4238 | /* Note that since we pass the resulting bindings through | |
4239 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4240 | disappear. */ | |
f4255cd1 | 4241 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4242 | } |
4243 | else | |
4244 | next[i] = Qnil; | |
4245 | ||
4246 | current = next; | |
86e5706b | 4247 | XSET (key, Lisp_Int, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4248 | } |
4249 | ||
4250 | first_binding = nmaps; | |
4251 | for (i = nmaps - 1; i >= 0; i--) | |
4252 | { | |
4253 | if (! NILP (current[i])) | |
4254 | { | |
e74fbc70 | 4255 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4256 | if (! NILP (defs[i])) |
4257 | first_binding = i; | |
4258 | } | |
4259 | else | |
4260 | defs[i] = Qnil; | |
4261 | } | |
4262 | ||
4263 | /* When KEY is not defined in any of the keymaps, if it is an upper | |
4264 | case letter and there are bindings for the corresponding | |
4265 | lower-case letter, return the bindings for the lower-case letter. */ | |
4266 | if (first_binding == nmaps | |
4267 | && XTYPE (key) == Lisp_Int | |
bb1ef421 RS |
4268 | && ((((XINT (key) & 0x3ffff) |
4269 | < XSTRING (current_buffer->downcase_table)->size) | |
4270 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
86e5706b | 4271 | || (XINT (key) & shift_modifier))) |
284f4730 | 4272 | { |
86e5706b RS |
4273 | if (XINT (key) & shift_modifier) |
4274 | XSETINT (key, XINT (key) & ~shift_modifier); | |
4275 | else | |
398b666f RS |
4276 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) |
4277 | | (XINT (key) & ~0x3ffff))); | |
284f4730 JB |
4278 | |
4279 | first_binding = nmaps; | |
4280 | for (i = nmaps - 1; i >= 0; i--) | |
4281 | { | |
4282 | if (! NILP (current[i])) | |
4283 | { | |
e74fbc70 | 4284 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4285 | if (! NILP (defs[i])) |
4286 | first_binding = i; | |
4287 | } | |
4288 | else | |
4289 | defs[i] = Qnil; | |
4290 | } | |
e9bf89a0 RS |
4291 | if (first_binding != nmaps) |
4292 | *case_converted = 1; | |
284f4730 | 4293 | } |
86e5706b | 4294 | |
284f4730 | 4295 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4296 | if (first_binding < nmaps) |
4297 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4298 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4299 | |
4300 | return first_binding; | |
4301 | } | |
4302 | ||
f4255cd1 JB |
4303 | /* Read a sequence of keys that ends with a non prefix character, |
4304 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4305 | Prompt with PROMPT. | |
284f4730 | 4306 | Return the length of the key sequence stored. |
dcc408a0 | 4307 | Return -1 if the user rejected a command menu. |
284f4730 | 4308 | |
f4255cd1 JB |
4309 | Echo starting immediately unless `prompt' is 0. |
4310 | ||
4311 | Where a key sequence ends depends on the currently active keymaps. | |
4312 | These include any minor mode keymaps active in the current buffer, | |
4313 | the current buffer's local map, and the global map. | |
4314 | ||
4315 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4316 | to see if some trailing subsequence might be the beginning of a | |
4317 | function key's sequence. If so, we try to read the whole function | |
4318 | key, and substitute its symbolic name into the key sequence. | |
4319 | ||
fbcd35bd JB |
4320 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4321 | `double-' events into similar click events, if that would make them | |
4322 | bound. We try to turn `triple-' events first into `double-' events, | |
4323 | then into clicks. | |
f4255cd1 JB |
4324 | |
4325 | If we get a mouse click in a mode line, vertical divider, or other | |
4326 | non-text area, we treat the click as if it were prefixed by the | |
4327 | symbol denoting that area - `mode-line', `vertical-line', or | |
4328 | whatever. | |
4329 | ||
4330 | If the sequence starts with a mouse click, we read the key sequence | |
4331 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4332 | |
f4255cd1 JB |
4333 | If the user switches frames in the midst of a key sequence, we put |
4334 | off the switch-frame event until later; the next call to | |
4335 | read_char will return it. */ | |
48e416d4 | 4336 | |
284f4730 JB |
4337 | static int |
4338 | read_key_sequence (keybuf, bufsize, prompt) | |
4339 | Lisp_Object *keybuf; | |
4340 | int bufsize; | |
84d91fda | 4341 | Lisp_Object prompt; |
284f4730 | 4342 | { |
f4255cd1 JB |
4343 | int count = specpdl_ptr - specpdl; |
4344 | ||
284f4730 JB |
4345 | /* How many keys there are in the current key sequence. */ |
4346 | int t; | |
4347 | ||
284f4730 JB |
4348 | /* The length of the echo buffer when we started reading, and |
4349 | the length of this_command_keys when we started reading. */ | |
4350 | int echo_start; | |
f4255cd1 | 4351 | int keys_start; |
284f4730 JB |
4352 | |
4353 | /* The number of keymaps we're scanning right now, and the number of | |
4354 | keymaps we have allocated space for. */ | |
4355 | int nmaps; | |
4356 | int nmaps_allocated = 0; | |
4357 | ||
284f4730 JB |
4358 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4359 | the current keymaps. */ | |
4360 | Lisp_Object *defs; | |
4361 | ||
f4255cd1 JB |
4362 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4363 | in the current keymaps, or nil where it is not a prefix. */ | |
4364 | Lisp_Object *submaps; | |
4365 | ||
4366 | /* The index in defs[] of the first keymap that has a binding for | |
4367 | this key sequence. In other words, the lowest i such that | |
4368 | defs[i] is non-nil. */ | |
284f4730 JB |
4369 | int first_binding; |
4370 | ||
f4255cd1 | 4371 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4372 | input key. |
4373 | ||
4374 | We use this to recover after recognizing a function key. Once we | |
4375 | realize that a suffix of the current key sequence is actually a | |
4376 | function key's escape sequence, we replace the suffix with the | |
4377 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4378 | contains a new and different key sequence, so the echo area, |
4379 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4380 | this situation, we set mock_input to t, set t to 0, and jump to | |
4381 | restart_sequence; the loop will read keys from keybuf up until | |
4382 | mock_input, thus rebuilding the state; and then it will resume | |
4383 | reading characters from the keyboard. */ | |
284f4730 JB |
4384 | int mock_input = 0; |
4385 | ||
253598e4 | 4386 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4387 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4388 | and fkey_map is its binding. | |
253598e4 | 4389 | |
f4255cd1 JB |
4390 | These might be > t, indicating that all function key scanning |
4391 | should hold off until t reaches them. We do this when we've just | |
4392 | recognized a function key, to avoid searching for the function | |
4393 | key's again in Vfunction_key_map. */ | |
284f4730 | 4394 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4395 | Lisp_Object fkey_map; |
284f4730 | 4396 | |
a612e298 RS |
4397 | /* Likewise, for key_translation_map. */ |
4398 | int keytran_start = 0, keytran_end = 0; | |
4399 | Lisp_Object keytran_map; | |
4400 | ||
cd21b839 JB |
4401 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4402 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4403 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4404 | |
51763820 BF |
4405 | /* See the comment below... */ |
4406 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4407 | Lisp_Object first_event; |
51763820 | 4408 | #endif |
4efda7dd | 4409 | |
3b9189f8 RS |
4410 | struct buffer *starting_buffer; |
4411 | ||
e9bf89a0 RS |
4412 | /* Nonzero if we found the binding for one of the chars |
4413 | in this key sequence by downcasing it. */ | |
4414 | int case_converted = 0; | |
4415 | ||
4416 | /* Nonzero if we seem to have got the beginning of a binding | |
4417 | in function_key_map. */ | |
4418 | int function_key_possible = 0; | |
4419 | ||
4efda7dd RS |
4420 | int junk; |
4421 | ||
4422 | last_nonmenu_event = Qnil; | |
4423 | ||
4424 | delayed_switch_frame = Qnil; | |
4425 | fkey_map = Vfunction_key_map; | |
a612e298 | 4426 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4427 | |
a612e298 | 4428 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4429 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4430 | fkey_start = fkey_end = bufsize + 1; | |
4431 | ||
a612e298 RS |
4432 | /* If there is no key-translation-map, turn off scanning. */ |
4433 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4434 | keytran_start = keytran_end = bufsize + 1; | |
4435 | ||
284f4730 JB |
4436 | if (INTERACTIVE) |
4437 | { | |
84d91fda RS |
4438 | if (!NILP (prompt)) |
4439 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4440 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4441 | /* This doesn't put in a dash if the echo buffer is empty, so |
4442 | you don't always see a dash hanging out in the minibuffer. */ | |
4443 | echo_dash (); | |
284f4730 JB |
4444 | } |
4445 | ||
f4255cd1 JB |
4446 | /* Record the initial state of the echo area and this_command_keys; |
4447 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4448 | if (INTERACTIVE) |
f4255cd1 JB |
4449 | echo_start = echo_length (); |
4450 | keys_start = this_command_key_count; | |
0a7f1fc0 | 4451 | |
51763820 BF |
4452 | #if defined (GOBBLE_FIRST_EVENT) |
4453 | /* This doesn't quite work, because some of the things that read_char | |
4454 | does cannot safely be bypassed. It seems too risky to try to make | |
4455 | this work right. */ | |
4456 | ||
4efda7dd RS |
4457 | /* Read the first char of the sequence specially, before setting |
4458 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4459 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4460 | &junk); |
51763820 | 4461 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4462 | |
7b4aedb9 JB |
4463 | /* We jump here when the key sequence has been thoroughly changed, and |
4464 | we need to rescan it starting from the beginning. When we jump here, | |
4465 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4466 | replay_sequence: |
7b4aedb9 | 4467 | |
3b9189f8 | 4468 | starting_buffer = current_buffer; |
e9bf89a0 RS |
4469 | case_converted = 0; |
4470 | function_key_possible = 0; | |
3b9189f8 | 4471 | |
f4255cd1 | 4472 | /* Build our list of keymaps. |
07d2b8de JB |
4473 | If we recognize a function key and replace its escape sequence in |
4474 | keybuf with its symbol, or if the sequence starts with a mouse | |
4475 | click and we need to switch buffers, we jump back here to rebuild | |
4476 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4477 | { |
4478 | Lisp_Object *maps; | |
4479 | ||
9dd3131c | 4480 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4481 | { |
9dd3131c RS |
4482 | nmaps = 2; |
4483 | if (nmaps > nmaps_allocated) | |
4484 | { | |
4485 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4486 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4487 | nmaps_allocated = nmaps; | |
4488 | } | |
4489 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4490 | } |
9dd3131c RS |
4491 | else |
4492 | { | |
4493 | nmaps = current_minor_maps (0, &maps) + 2; | |
4494 | if (nmaps > nmaps_allocated) | |
4495 | { | |
4496 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4497 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4498 | nmaps_allocated = nmaps; | |
4499 | } | |
4500 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4501 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 4502 | submaps[nmaps-2] = get_local_map (PT, current_buffer); |
497ba7a1 | 4503 | #else |
9dd3131c | 4504 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4505 | #endif |
9dd3131c | 4506 | } |
7e6992e0 | 4507 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4508 | } |
4509 | ||
4510 | /* Find an accurate initial value for first_binding. */ | |
4511 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4512 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4513 | break; |
4514 | ||
3b9189f8 | 4515 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4516 | t = 0; |
4517 | ||
4518 | /* These are no-ops the first time through, but if we restart, they | |
4519 | revert the echo area and this_command_keys to their original state. */ | |
4520 | this_command_key_count = keys_start; | |
40932d1a | 4521 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
4522 | echo_truncate (echo_start); |
4523 | ||
cca310da JB |
4524 | /* If the best binding for the current key sequence is a keymap, or |
4525 | we may be looking at a function key's escape sequence, keep on | |
4526 | reading. */ | |
253598e4 | 4527 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4528 | || (first_binding >= nmaps |
4529 | && fkey_start < t | |
4530 | /* mock input is never part of a function key's sequence. */ | |
a612e298 RS |
4531 | && mock_input <= fkey_start) |
4532 | || (first_binding >= nmaps | |
4533 | && keytran_start < t | |
4534 | /* mock input is never part of a function key's sequence. */ | |
e9bf89a0 RS |
4535 | && mock_input <= keytran_start) |
4536 | /* Don't return in the middle of a possible function key sequence, | |
4537 | if the only bindings we found were via case conversion. | |
4538 | Thus, if ESC O a has a function-key-map translation | |
4539 | and ESC o has a binding, don't return after ESC O, | |
4540 | so that we can translate ESC O plus the next character. */ | |
4541 | || (function_key_possible && case_converted)) | |
284f4730 JB |
4542 | { |
4543 | Lisp_Object key; | |
7d6de002 | 4544 | int used_mouse_menu = 0; |
284f4730 | 4545 | |
7b4aedb9 JB |
4546 | /* Where the last real key started. If we need to throw away a |
4547 | key that has expanded into more than one element of keybuf | |
4548 | (say, a mouse click on the mode line which is being treated | |
4549 | as [mode-line (mouse-...)], then we backtrack to this point | |
4550 | of keybuf. */ | |
4551 | int last_real_key_start; | |
4552 | ||
0a7f1fc0 JB |
4553 | /* These variables are analogous to echo_start and keys_start; |
4554 | while those allow us to restart the entire key sequence, | |
4555 | echo_local_start and keys_local_start allow us to throw away | |
4556 | just one key. */ | |
f4255cd1 JB |
4557 | int echo_local_start, keys_local_start, local_first_binding; |
4558 | ||
284f4730 JB |
4559 | if (t >= bufsize) |
4560 | error ("key sequence too long"); | |
4561 | ||
f4255cd1 JB |
4562 | if (INTERACTIVE) |
4563 | echo_local_start = echo_length (); | |
4564 | keys_local_start = this_command_key_count; | |
4565 | local_first_binding = first_binding; | |
4566 | ||
4567 | replay_key: | |
0a7f1fc0 | 4568 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4569 | jumped back up to replay_key; in that case, these restore the |
4570 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4571 | loop. */ |
40932d1a | 4572 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4573 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4574 | this_command_key_count = keys_local_start; |
4575 | first_binding = local_first_binding; | |
4576 | ||
7e85b935 RS |
4577 | /* By default, assume each event is "real". */ |
4578 | last_real_key_start = t; | |
4579 | ||
f4255cd1 | 4580 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4581 | if (t < mock_input) |
4582 | { | |
4583 | key = keybuf[t]; | |
4584 | add_command_key (key); | |
a98ea3f9 RS |
4585 | if (echo_keystrokes) |
4586 | echo_char (key); | |
284f4730 | 4587 | } |
253598e4 JB |
4588 | |
4589 | /* If not, we should actually read a character. */ | |
284f4730 JB |
4590 | else |
4591 | { | |
a6d53864 RS |
4592 | struct buffer *buf = current_buffer; |
4593 | ||
84d91fda | 4594 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, |
a6d53864 | 4595 | &used_mouse_menu); |
284f4730 | 4596 | |
dcc408a0 RS |
4597 | /* read_char returns t when it shows a menu and the user rejects it. |
4598 | Just return -1. */ | |
4599 | if (EQ (key, Qt)) | |
4600 | return -1; | |
4601 | ||
f4255cd1 | 4602 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
4603 | Emacs 18 handles this by returning immediately with a |
4604 | zero, so that's what we'll do. */ | |
86e5706b | 4605 | if (XTYPE (key) == Lisp_Int && XINT (key) == -1) |
cd21b839 | 4606 | { |
f4255cd1 JB |
4607 | t = 0; |
4608 | goto done; | |
cd21b839 | 4609 | } |
284f4730 | 4610 | |
3cb81011 KH |
4611 | /* If the current buffer has been changed from under us, the |
4612 | keymap may have changed, so replay the sequence. */ | |
4613 | if (XTYPE (key) == Lisp_Buffer) | |
4614 | { | |
4615 | mock_input = t; | |
4616 | goto replay_sequence; | |
4617 | } | |
4618 | ||
3b9189f8 RS |
4619 | /* If we have a quit that was typed in another frame, and |
4620 | quit_throw_to_read_char switched buffers, | |
4621 | replay to get the right keymap. */ | |
4622 | if (EQ (key, quit_char) && current_buffer != starting_buffer) | |
4623 | { | |
4624 | keybuf[t++] = key; | |
4625 | mock_input = t; | |
4626 | Vquit_flag = Qnil; | |
4627 | goto replay_sequence; | |
4628 | } | |
3cb81011 | 4629 | |
284f4730 | 4630 | Vquit_flag = Qnil; |
7e85b935 | 4631 | } |
284f4730 | 4632 | |
7e85b935 RS |
4633 | /* Clicks in non-text areas get prefixed by the symbol |
4634 | in their CHAR-ADDRESS field. For example, a click on | |
4635 | the mode line is prefixed by the symbol `mode-line'. | |
4636 | ||
4637 | Furthermore, key sequences beginning with mouse clicks | |
4638 | are read using the keymaps of the buffer clicked on, not | |
4639 | the current buffer. So we may have to switch the buffer | |
4640 | here. | |
4641 | ||
4642 | When we turn one event into two events, we must make sure | |
4643 | that neither of the two looks like the original--so that, | |
4644 | if we replay the events, they won't be expanded again. | |
4645 | If not for this, such reexpansion could happen either here | |
4646 | or when user programs play with this-command-keys. */ | |
4647 | if (EVENT_HAS_PARAMETERS (key)) | |
4648 | { | |
9b8eb840 | 4649 | Lisp_Object kind; |
cca310da | 4650 | |
9b8eb840 | 4651 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 4652 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 4653 | { |
9b8eb840 | 4654 | Lisp_Object window, posn; |
f4255cd1 | 4655 | |
9b8eb840 KH |
4656 | window = POSN_WINDOW (EVENT_START (key)); |
4657 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
7e85b935 | 4658 | if (XTYPE (posn) == Lisp_Cons) |
0a7f1fc0 | 4659 | { |
7e85b935 RS |
4660 | /* We're looking at the second event of a |
4661 | sequence which we expanded before. Set | |
4662 | last_real_key_start appropriately. */ | |
4663 | if (t > 0) | |
4664 | last_real_key_start = t - 1; | |
cd21b839 | 4665 | } |
7e85b935 RS |
4666 | |
4667 | /* Key sequences beginning with mouse clicks are | |
4668 | read using the keymaps in the buffer clicked on, | |
4669 | not the current buffer. If we're at the | |
4670 | beginning of a key sequence, switch buffers. */ | |
4671 | if (last_real_key_start == 0 | |
4672 | && XTYPE (window) == Lisp_Window | |
4673 | && XTYPE (XWINDOW (window)->buffer) == Lisp_Buffer | |
4674 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) | |
cd21b839 | 4675 | { |
7e85b935 RS |
4676 | keybuf[t] = key; |
4677 | mock_input = t + 1; | |
4678 | ||
4679 | /* Arrange to go back to the original buffer once we're | |
4680 | done reading the key sequence. Note that we can't | |
4681 | use save_excursion_{save,restore} here, because they | |
4682 | save point as well as the current buffer; we don't | |
4683 | want to save point, because redisplay may change it, | |
4684 | to accommodate a Fset_window_start or something. We | |
4685 | don't want to do this at the top of the function, | |
4686 | because we may get input from a subprocess which | |
4687 | wants to change the selected window and stuff (say, | |
4688 | emacsclient). */ | |
4689 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4690 | ||
4691 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
4692 | goto replay_sequence; | |
0a7f1fc0 | 4693 | } |
7e85b935 | 4694 | else if (XTYPE (posn) == Lisp_Symbol) |
5ec75a55 | 4695 | { |
7e85b935 RS |
4696 | /* Expand mode-line and scroll-bar events into two events: |
4697 | use posn as a fake prefix key. */ | |
5ec75a55 | 4698 | |
7e85b935 RS |
4699 | if (t + 1 >= bufsize) |
4700 | error ("key sequence too long"); | |
4701 | keybuf[t] = posn; | |
4702 | keybuf[t+1] = key; | |
4703 | mock_input = t + 2; | |
4704 | ||
4705 | /* Zap the position in key, so we know that we've | |
4706 | expanded it, and don't try to do so again. */ | |
4707 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4708 | = Fcons (posn, Qnil); | |
4709 | goto replay_key; | |
5ec75a55 | 4710 | } |
0a7f1fc0 | 4711 | } |
7e85b935 | 4712 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4713 | { |
7e85b935 RS |
4714 | /* If we're at the beginning of a key sequence, go |
4715 | ahead and return this event. If we're in the | |
4716 | midst of a key sequence, delay it until the end. */ | |
4717 | if (t > 0) | |
4718 | { | |
4719 | delayed_switch_frame = key; | |
4720 | goto replay_key; | |
4721 | } | |
4722 | } | |
7a80a6f6 RS |
4723 | else if (CONSP (XCONS (key)->cdr) |
4724 | && CONSP (EVENT_START (key)) | |
4725 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 4726 | { |
9b8eb840 | 4727 | Lisp_Object posn; |
7e85b935 | 4728 | |
9b8eb840 | 4729 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
4730 | /* Handle menu-bar events: |
4731 | insert the dummy prefix event `menu-bar'. */ | |
4732 | if (EQ (posn, Qmenu_bar)) | |
4733 | { | |
4734 | if (t + 1 >= bufsize) | |
4735 | error ("key sequence too long"); | |
4736 | /* Run the Lucid hook. */ | |
88ce066e RS |
4737 | if (!NILP (Vrun_hooks)) |
4738 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
4739 | /* If it has changed current-menubar from previous value, |
4740 | really recompute the menubar from the value. */ | |
4741 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
4742 | call0 (Qrecompute_lucid_menubar); | |
4743 | keybuf[t] = posn; | |
4744 | keybuf[t+1] = key; | |
4745 | ||
4746 | /* Zap the position in key, so we know that we've | |
4747 | expanded it, and don't try to do so again. */ | |
4748 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4749 | = Fcons (posn, Qnil); | |
4750 | ||
4751 | mock_input = t + 2; | |
4752 | goto replay_sequence; | |
4753 | } | |
4754 | else if (XTYPE (posn) == Lisp_Cons) | |
4755 | { | |
4756 | /* We're looking at the second event of a | |
4757 | sequence which we expanded before. Set | |
4758 | last_real_key_start appropriately. */ | |
4759 | if (last_real_key_start == t && t > 0) | |
4760 | last_real_key_start = t - 1; | |
4761 | } | |
a6d53864 | 4762 | } |
284f4730 | 4763 | } |
f4255cd1 JB |
4764 | |
4765 | /* We have finally decided that KEY is something we might want | |
4766 | to look up. */ | |
284f4730 JB |
4767 | first_binding = (follow_key (key, |
4768 | nmaps - first_binding, | |
253598e4 | 4769 | submaps + first_binding, |
284f4730 | 4770 | defs + first_binding, |
e9bf89a0 RS |
4771 | submaps + first_binding, |
4772 | &case_converted) | |
284f4730 | 4773 | + first_binding); |
0a7f1fc0 | 4774 | |
f4255cd1 | 4775 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
4776 | if (first_binding >= nmaps) |
4777 | { | |
9b8eb840 | 4778 | Lisp_Object head; |
0a7f1fc0 | 4779 | |
9b8eb840 | 4780 | head = EVENT_HEAD (key); |
7e85b935 RS |
4781 | if (EQ (head, Vhelp_char)) |
4782 | { | |
4783 | read_key_sequence_cmd = Vprefix_help_command; | |
4784 | keybuf[t++] = key; | |
4785 | last_nonmenu_event = key; | |
4786 | goto done; | |
4787 | } | |
4788 | ||
0a7f1fc0 JB |
4789 | if (XTYPE (head) == Lisp_Symbol) |
4790 | { | |
9b8eb840 KH |
4791 | Lisp_Object breakdown; |
4792 | int modifiers; | |
0a7f1fc0 | 4793 | |
9b8eb840 KH |
4794 | breakdown = parse_modifiers (head); |
4795 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
4796 | /* Attempt to reduce an unbound mouse event to a simpler |
4797 | event that is bound: | |
4798 | Drags reduce to clicks. | |
4799 | Double-clicks reduce to clicks. | |
4800 | Triple-clicks reduce to double-clicks, then to clicks. | |
4801 | Down-clicks are eliminated. | |
4802 | Double-downs reduce to downs, then are eliminated. | |
4803 | Triple-downs reduce to double-downs, then to downs, | |
4804 | then are eliminated. */ | |
4805 | if (modifiers & (down_modifier | drag_modifier | |
4806 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4807 | { |
559f9d04 RS |
4808 | while (modifiers & (down_modifier | drag_modifier |
4809 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
4810 | { |
4811 | Lisp_Object new_head, new_click; | |
4812 | if (modifiers & triple_modifier) | |
4813 | modifiers ^= (double_modifier | triple_modifier); | |
559f9d04 | 4814 | else if (modifiers & (drag_modifier | double_modifier)) |
fbcd35bd | 4815 | modifiers &= ~(drag_modifier | double_modifier); |
559f9d04 RS |
4816 | else |
4817 | { | |
4818 | /* Dispose of this `down' event by simply jumping | |
4819 | back to replay_key, to get another event. | |
4820 | ||
4821 | Note that if this event came from mock input, | |
4822 | then just jumping back to replay_key will just | |
4823 | hand it to us again. So we have to wipe out any | |
4824 | mock input. | |
4825 | ||
4826 | We could delete keybuf[t] and shift everything | |
4827 | after that to the left by one spot, but we'd also | |
4828 | have to fix up any variable that points into | |
4829 | keybuf, and shifting isn't really necessary | |
4830 | anyway. | |
4831 | ||
4832 | Adding prefixes for non-textual mouse clicks | |
4833 | creates two characters of mock input, and both | |
4834 | must be thrown away. If we're only looking at | |
4835 | the prefix now, we can just jump back to | |
4836 | replay_key. On the other hand, if we've already | |
4837 | processed the prefix, and now the actual click | |
4838 | itself is giving us trouble, then we've lost the | |
4839 | state of the keymaps we want to backtrack to, and | |
4840 | we need to replay the whole sequence to rebuild | |
4841 | it. | |
4842 | ||
4843 | Beyond that, only function key expansion could | |
4844 | create more than two keys, but that should never | |
4845 | generate mouse events, so it's okay to zero | |
4846 | mock_input in that case too. | |
4847 | ||
4848 | Isn't this just the most wonderful code ever? */ | |
4849 | if (t == last_real_key_start) | |
4850 | { | |
4851 | mock_input = 0; | |
4852 | goto replay_key; | |
4853 | } | |
4854 | else | |
4855 | { | |
4856 | mock_input = last_real_key_start; | |
4857 | goto replay_sequence; | |
4858 | } | |
4859 | } | |
4860 | ||
27203ead RS |
4861 | new_head |
4862 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
4863 | new_click | |
4864 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
4865 | |
4866 | /* Look for a binding for this new key. follow_key | |
4867 | promises that it didn't munge submaps the | |
4868 | last time we called it, since key was unbound. */ | |
27203ead RS |
4869 | first_binding |
4870 | = (follow_key (new_click, | |
4871 | nmaps - local_first_binding, | |
4872 | submaps + local_first_binding, | |
4873 | defs + local_first_binding, | |
e9bf89a0 RS |
4874 | submaps + local_first_binding, |
4875 | &case_converted) | |
27203ead | 4876 | + local_first_binding); |
fbcd35bd JB |
4877 | |
4878 | /* If that click is bound, go for it. */ | |
4879 | if (first_binding < nmaps) | |
4880 | { | |
4881 | key = new_click; | |
4882 | break; | |
4883 | } | |
4884 | /* Otherwise, we'll leave key set to the drag event. */ | |
4885 | } | |
0a7f1fc0 JB |
4886 | } |
4887 | } | |
4888 | } | |
4889 | ||
284f4730 | 4890 | keybuf[t++] = key; |
7d6de002 RS |
4891 | /* Normally, last_nonmenu_event gets the previous key we read. |
4892 | But when a mouse popup menu is being used, | |
4893 | we don't update last_nonmenu_event; it continues to hold the mouse | |
4894 | event that preceded the first level of menu. */ | |
4895 | if (!used_mouse_menu) | |
4896 | last_nonmenu_event = key; | |
284f4730 JB |
4897 | |
4898 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
4899 | off the end of it. We only want to scan real keyboard input |
4900 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 4901 | re-reading old events, don't examine it. */ |
e9bf89a0 | 4902 | if ((first_binding >= nmaps || case_converted) |
253598e4 | 4903 | && t >= mock_input) |
284f4730 JB |
4904 | { |
4905 | Lisp_Object fkey_next; | |
4906 | ||
e9bf89a0 RS |
4907 | /* Continue scan from fkey_end until we find a bound suffix. |
4908 | If we fail, increment fkey_start | |
4909 | and start fkey_end from there. */ | |
284f4730 JB |
4910 | while (fkey_end < t) |
4911 | { | |
f4255cd1 JB |
4912 | Lisp_Object key; |
4913 | ||
4914 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
4915 | /* Look up meta-characters by prefixing them |
4916 | with meta_prefix_char. I hate this. */ | |
d3cc13fa | 4917 | if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier) |
f4255cd1 | 4918 | { |
e74fbc70 RS |
4919 | fkey_next |
4920 | = get_keymap_1 | |
f4255cd1 | 4921 | (get_keyelt |
e74fbc70 | 4922 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 4923 | 0, 1); |
d3cc13fa | 4924 | XFASTINT (key) = XFASTINT (key) & ~meta_modifier; |
f4255cd1 | 4925 | } |
067ffa38 JB |
4926 | else |
4927 | fkey_next = fkey_map; | |
4928 | ||
e74fbc70 RS |
4929 | fkey_next |
4930 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 4931 | |
7a80a6f6 RS |
4932 | #if 0 /* I didn't turn this on, because it might cause trouble |
4933 | for the mapping of return into C-m and tab into C-i. */ | |
4934 | /* Optionally don't map function keys into other things. | |
4935 | This enables the user to redefine kp- keys easily. */ | |
4936 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
4937 | fkey_next = Qnil; | |
4938 | #endif | |
4939 | ||
1abe6abe RS |
4940 | /* If the function key map gives a function, not an |
4941 | array, then call the function with no args and use | |
4942 | its value instead. */ | |
4943 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
4944 | && fkey_end == t) | |
4945 | { | |
4946 | struct gcpro gcpro1, gcpro2, gcpro3; | |
4947 | Lisp_Object tem; | |
4948 | tem = fkey_next; | |
4949 | ||
4950 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 4951 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
4952 | UNGCPRO; |
4953 | /* If the function returned something invalid, | |
4954 | barf--don't ignore it. | |
4955 | (To ignore it safely, we would need to gcpro a bunch of | |
4956 | other variables.) */ | |
4957 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
4958 | error ("Function in function-key-map returns invalid key sequence"); | |
4959 | } | |
4960 | ||
e9bf89a0 RS |
4961 | function_key_possible = ! NILP (fkey_next); |
4962 | ||
85bc5181 | 4963 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 4964 | function key map and it's a suffix of the current |
85bc5181 | 4965 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 4966 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 4967 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
4968 | && fkey_end == t) |
4969 | { | |
2e864a76 | 4970 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
4971 | |
4972 | t = fkey_start + len; | |
284f4730 JB |
4973 | if (t >= bufsize) |
4974 | error ("key sequence too long"); | |
4975 | ||
f5ea6163 JB |
4976 | if (VECTORP (fkey_next)) |
4977 | bcopy (XVECTOR (fkey_next)->contents, | |
4978 | keybuf + fkey_start, | |
4979 | (t - fkey_start) * sizeof (keybuf[0])); | |
4980 | else if (STRINGP (fkey_next)) | |
4981 | { | |
4982 | int i; | |
4983 | ||
4984 | for (i = 0; i < len; i++) | |
1abe6abe RS |
4985 | XFASTINT (keybuf[fkey_start + i]) |
4986 | = XSTRING (fkey_next)->data[i]; | |
f5ea6163 | 4987 | } |
284f4730 JB |
4988 | |
4989 | mock_input = t; | |
4990 | fkey_start = fkey_end = t; | |
32e6d806 | 4991 | fkey_map = Vfunction_key_map; |
284f4730 | 4992 | |
f4255cd1 | 4993 | goto replay_sequence; |
284f4730 JB |
4994 | } |
4995 | ||
f4255cd1 | 4996 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 4997 | |
a764a753 JB |
4998 | /* If we no longer have a bound suffix, try a new positions for |
4999 | fkey_start. */ | |
284f4730 JB |
5000 | if (NILP (fkey_map)) |
5001 | { | |
5002 | fkey_end = ++fkey_start; | |
5003 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5004 | function_key_possible = 0; |
284f4730 JB |
5005 | } |
5006 | } | |
5007 | } | |
a612e298 RS |
5008 | |
5009 | /* Look for this sequence in key-translation-map. */ | |
5010 | { | |
5011 | Lisp_Object keytran_next; | |
5012 | ||
5013 | /* Scan from keytran_end until we find a bound suffix. */ | |
5014 | while (keytran_end < t) | |
5015 | { | |
5016 | Lisp_Object key; | |
5017 | ||
5018 | key = keybuf[keytran_end++]; | |
5019 | /* Look up meta-characters by prefixing them | |
5020 | with meta_prefix_char. I hate this. */ | |
5021 | if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier) | |
5022 | { | |
5023 | keytran_next | |
5024 | = get_keymap_1 | |
5025 | (get_keyelt | |
5026 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5027 | 0, 1); | |
5028 | XFASTINT (key) = XFASTINT (key) & ~meta_modifier; | |
5029 | } | |
5030 | else | |
5031 | keytran_next = keytran_map; | |
5032 | ||
5033 | keytran_next | |
5034 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5035 | ||
1abe6abe RS |
5036 | /* If the key translation map gives a function, not an |
5037 | array, then call the function with no args and use | |
5038 | its value instead. */ | |
5039 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5040 | && keytran_end == t) | |
5041 | { | |
5042 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5043 | Lisp_Object tem; | |
5044 | tem = keytran_next; | |
5045 | ||
40932d1a | 5046 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5047 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5048 | UNGCPRO; |
5049 | /* If the function returned something invalid, | |
5050 | barf--don't ignore it. | |
5051 | (To ignore it safely, we would need to gcpro a bunch of | |
5052 | other variables.) */ | |
5053 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5054 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5055 | } |
5056 | ||
a612e298 | 5057 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5058 | key translation map and it's a suffix of the current |
a612e298 RS |
5059 | sequence (i.e. keytran_end == t), replace it with |
5060 | the binding and restart with keytran_start at the end. */ | |
5061 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5062 | && keytran_end == t) | |
5063 | { | |
2e864a76 | 5064 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5065 | |
5066 | t = keytran_start + len; | |
5067 | if (t >= bufsize) | |
5068 | error ("key sequence too long"); | |
5069 | ||
5070 | if (VECTORP (keytran_next)) | |
5071 | bcopy (XVECTOR (keytran_next)->contents, | |
5072 | keybuf + keytran_start, | |
5073 | (t - keytran_start) * sizeof (keybuf[0])); | |
5074 | else if (STRINGP (keytran_next)) | |
5075 | { | |
5076 | int i; | |
5077 | ||
5078 | for (i = 0; i < len; i++) | |
5079 | XFASTINT (keybuf[keytran_start + i]) | |
5080 | = XSTRING (keytran_next)->data[i]; | |
5081 | } | |
5082 | ||
5083 | mock_input = t; | |
5084 | keytran_start = keytran_end = t; | |
5085 | keytran_map = Vkey_translation_map; | |
5086 | ||
5087 | goto replay_sequence; | |
5088 | } | |
5089 | ||
5090 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5091 | ||
5092 | /* If we no longer have a bound suffix, try a new positions for | |
5093 | keytran_start. */ | |
5094 | if (NILP (keytran_map)) | |
5095 | { | |
5096 | keytran_end = ++keytran_start; | |
5097 | keytran_map = Vkey_translation_map; | |
5098 | } | |
5099 | } | |
5100 | } | |
284f4730 JB |
5101 | } |
5102 | ||
5103 | read_key_sequence_cmd = (first_binding < nmaps | |
5104 | ? defs[first_binding] | |
5105 | : Qnil); | |
5106 | ||
f4255cd1 | 5107 | done: |
cd21b839 | 5108 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5109 | unbind_to (count, Qnil); |
07f76a14 JB |
5110 | |
5111 | /* Occasionally we fabricate events, perhaps by expanding something | |
5112 | according to function-key-map, or by adding a prefix symbol to a | |
5113 | mouse click in the scroll bar or modeline. In this cases, return | |
5114 | the entire generated key sequence, even if we hit an unbound | |
5115 | prefix or a definition before the end. This means that you will | |
5116 | be able to push back the event properly, and also means that | |
5117 | read-key-sequence will always return a logical unit. | |
5118 | ||
5119 | Better ideas? */ | |
cca310da JB |
5120 | for (; t < mock_input; t++) |
5121 | { | |
a98ea3f9 RS |
5122 | if (echo_keystrokes) |
5123 | echo_char (keybuf[t]); | |
cca310da JB |
5124 | add_command_key (keybuf[t]); |
5125 | } | |
07f76a14 | 5126 | |
284f4730 JB |
5127 | return t; |
5128 | } | |
5129 | ||
a612e298 RS |
5130 | #if 0 /* This doc string is too long for some compilers. |
5131 | This commented-out definition serves for DOC. */ | |
c0a58692 | 5132 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
5133 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5134 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5135 | current local and global maps.\n\ | |
5136 | \n\ | |
c0a58692 RS |
5137 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5138 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5139 | as a continuation of the previous key.\n\ | |
284f4730 | 5140 | \n\ |
cb5df6ae JB |
5141 | A C-g typed while in this function is treated like any other character,\n\ |
5142 | and `quit-flag' is not set.\n\ | |
5143 | \n\ | |
5144 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5145 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5146 | of the selected window as normal.\n\ | |
ede41463 | 5147 | ""\n\ |
cb5df6ae JB |
5148 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5149 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5150 | or multi-click event is unbound, but the corresponding click event would\n\ |
5151 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5152 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5153 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5154 | \n\ |
5155 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5156 | lines separating windows, and scroll bars with imaginary keys\n\ |
5157 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
5158 | \n\ |
5159 | If the user switches frames in the middle of a key sequence, the\n\ | |
5160 | frame-switch event is put off until after the current key sequence.\n\ | |
5161 | \n\ | |
5162 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5163 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5164 | `function-key-map' for more details.") |
a612e298 RS |
5165 | (prompt, continue_echo) |
5166 | #endif | |
5167 | ||
5168 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, | |
5169 | 0) | |
c0a58692 RS |
5170 | (prompt, continue_echo) |
5171 | Lisp_Object prompt, continue_echo; | |
284f4730 JB |
5172 | { |
5173 | Lisp_Object keybuf[30]; | |
5174 | register int i; | |
5175 | struct gcpro gcpro1, gcpro2; | |
5176 | ||
5177 | if (!NILP (prompt)) | |
5178 | CHECK_STRING (prompt, 0); | |
5179 | QUIT; | |
5180 | ||
5181 | bzero (keybuf, sizeof keybuf); | |
5182 | GCPRO1 (keybuf[0]); | |
5183 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5184 | ||
daa37602 | 5185 | if (NILP (continue_echo)) |
c0a58692 RS |
5186 | this_command_key_count = 0; |
5187 | ||
84d91fda | 5188 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), prompt); |
284f4730 | 5189 | |
dcc408a0 RS |
5190 | if (i == -1) |
5191 | { | |
5192 | Vquit_flag = Qt; | |
5193 | QUIT; | |
5194 | } | |
284f4730 | 5195 | UNGCPRO; |
86e5706b | 5196 | return make_event_array (i, keybuf); |
284f4730 JB |
5197 | } |
5198 | \f | |
5199 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5200 | "Execute CMD as an editor command.\n\ | |
5201 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5202 | Optional second arg RECORD-FLAG non-nil\n\ | |
5203 | means unconditionally put this command in `command-history'.\n\ | |
5204 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5205 | (cmd, record) | |
5206 | Lisp_Object cmd, record; | |
5207 | { | |
5208 | register Lisp_Object final; | |
5209 | register Lisp_Object tem; | |
5210 | Lisp_Object prefixarg; | |
5211 | struct backtrace backtrace; | |
5212 | extern int debug_on_next_call; | |
5213 | ||
5214 | prefixarg = Vprefix_arg, Vprefix_arg = Qnil; | |
5215 | Vcurrent_prefix_arg = prefixarg; | |
5216 | debug_on_next_call = 0; | |
5217 | ||
5218 | if (XTYPE (cmd) == Lisp_Symbol) | |
5219 | { | |
5220 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5221 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5222 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5223 | } |
5224 | ||
5225 | while (1) | |
5226 | { | |
ffd56f97 | 5227 | final = Findirect_function (cmd); |
284f4730 JB |
5228 | |
5229 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5230 | do_autoload (final, cmd); | |
5231 | else | |
5232 | break; | |
5233 | } | |
5234 | ||
5235 | if (XTYPE (final) == Lisp_String | |
5236 | || XTYPE (final) == Lisp_Vector) | |
5237 | { | |
5238 | /* If requested, place the macro in the command history. For | |
5239 | other sorts of commands, call-interactively takes care of | |
5240 | this. */ | |
5241 | if (!NILP (record)) | |
5242 | Vcommand_history | |
5243 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5244 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5245 | Vcommand_history); | |
5246 | ||
5247 | return Fexecute_kbd_macro (final, prefixarg); | |
5248 | } | |
5249 | if (CONSP (final) || XTYPE (final) == Lisp_Subr | |
5250 | || XTYPE (final) == Lisp_Compiled) | |
5251 | { | |
5252 | backtrace.next = backtrace_list; | |
5253 | backtrace_list = &backtrace; | |
5254 | backtrace.function = &Qcall_interactively; | |
5255 | backtrace.args = &cmd; | |
5256 | backtrace.nargs = 1; | |
5257 | backtrace.evalargs = 0; | |
5258 | ||
5259 | tem = Fcall_interactively (cmd, record); | |
5260 | ||
5261 | backtrace_list = backtrace.next; | |
5262 | return tem; | |
5263 | } | |
5264 | return Qnil; | |
5265 | } | |
5266 | \f | |
284f4730 JB |
5267 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5268 | 1, 1, "P", | |
5269 | "Read function name, then read its arguments and call it.") | |
5270 | (prefixarg) | |
5271 | Lisp_Object prefixarg; | |
5272 | { | |
5273 | Lisp_Object function; | |
5274 | char buf[40]; | |
5275 | Lisp_Object saved_keys; | |
5276 | struct gcpro gcpro1; | |
5277 | ||
b0f2a7bf KH |
5278 | saved_keys = Fvector (this_command_key_count, |
5279 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5280 | buf[0] = 0; |
5281 | GCPRO1 (saved_keys); | |
5282 | ||
5283 | if (EQ (prefixarg, Qminus)) | |
5284 | strcpy (buf, "- "); | |
5285 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5286 | strcpy (buf, "C-u "); | |
5287 | else if (CONSP (prefixarg) && XTYPE (XCONS (prefixarg)->car) == Lisp_Int) | |
5288 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
5289 | else if (XTYPE (prefixarg) == Lisp_Int) | |
5290 | sprintf (buf, "%d ", XINT (prefixarg)); | |
5291 | ||
5292 | /* This isn't strictly correct if execute-extended-command | |
5293 | is bound to anything else. Perhaps it should use | |
5294 | this_command_keys? */ | |
5295 | strcat (buf, "M-x "); | |
5296 | ||
5297 | /* Prompt with buf, and then read a string, completing from and | |
5298 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5299 | any initial input. Save the command read on the extended-command |
03b4122a | 5300 | history list. */ |
284f4730 JB |
5301 | function = Fcompleting_read (build_string (buf), |
5302 | Vobarray, Qcommandp, | |
03b4122a | 5303 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5304 | |
1113d9db JB |
5305 | /* Set this_command_keys to the concatenation of saved_keys and |
5306 | function, followed by a RET. */ | |
284f4730 | 5307 | { |
1113d9db | 5308 | struct Lisp_String *str; |
b0f2a7bf | 5309 | Lisp_Object *keys; |
284f4730 JB |
5310 | int i; |
5311 | Lisp_Object tem; | |
5312 | ||
1113d9db JB |
5313 | this_command_key_count = 0; |
5314 | ||
b0f2a7bf KH |
5315 | keys = XVECTOR (saved_keys)->contents; |
5316 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5317 | add_command_key (keys[i]); | |
1113d9db JB |
5318 | |
5319 | str = XSTRING (function); | |
5320 | for (i = 0; i < str->size; i++) | |
5321 | { | |
5322 | XFASTINT (tem) = str->data[i]; | |
5323 | add_command_key (tem); | |
5324 | } | |
5325 | ||
5326 | XFASTINT (tem) = '\015'; | |
5327 | add_command_key (tem); | |
284f4730 JB |
5328 | } |
5329 | ||
5330 | UNGCPRO; | |
5331 | ||
0a7f1fc0 | 5332 | function = Fintern (function, Qnil); |
284f4730 JB |
5333 | Vprefix_arg = prefixarg; |
5334 | this_command = function; | |
5335 | ||
5336 | return Fcommand_execute (function, Qt); | |
5337 | } | |
5338 | \f | |
5339 | ||
5340 | detect_input_pending () | |
5341 | { | |
5342 | if (!input_pending) | |
5343 | get_input_pending (&input_pending); | |
5344 | ||
5345 | return input_pending; | |
5346 | } | |
5347 | ||
ffd56f97 JB |
5348 | /* This is called in some cases before a possible quit. |
5349 | It cases the next call to detect_input_pending to recompute input_pending. | |
5350 | So calling this function unnecessarily can't do any harm. */ | |
5351 | clear_input_pending () | |
5352 | { | |
5353 | input_pending = 0; | |
5354 | } | |
5355 | ||
284f4730 JB |
5356 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5357 | "T if command input is currently available with no waiting.\n\ | |
5358 | Actually, the value is nil only if we can be sure that no input is available.") | |
5359 | () | |
5360 | { | |
24597608 | 5361 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5362 | return (Qt); |
5363 | ||
5364 | return detect_input_pending () ? Qt : Qnil; | |
5365 | } | |
5366 | ||
5367 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5368 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5369 | () |
5370 | { | |
5160df46 | 5371 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5372 | Lisp_Object val; |
5373 | ||
5374 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5375 | return Fvector (total_keys, keys); |
284f4730 JB |
5376 | else |
5377 | { | |
5160df46 JB |
5378 | val = Fvector (NUM_RECENT_KEYS, keys); |
5379 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5380 | XVECTOR (val)->contents, |
5381 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5382 | bcopy (keys, |
284f4730 JB |
5383 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5384 | recent_keys_index * sizeof (Lisp_Object)); | |
5385 | return val; | |
5386 | } | |
5387 | } | |
5388 | ||
5389 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5390 | "Return the key sequence that invoked this command.\n\ |
5391 | The value is a string or a vector.") | |
284f4730 JB |
5392 | () |
5393 | { | |
86e5706b RS |
5394 | return make_event_array (this_command_key_count, |
5395 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5396 | } |
5397 | ||
5398 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5399 | "Return the current depth in recursive edits.") | |
5400 | () | |
5401 | { | |
5402 | Lisp_Object temp; | |
5403 | XFASTINT (temp) = command_loop_level + minibuf_level; | |
5404 | return temp; | |
5405 | } | |
5406 | ||
5407 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5408 | "FOpen dribble file: ", | |
9b2471df RS |
5409 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5410 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5411 | (file) |
5412 | Lisp_Object file; | |
5413 | { | |
5414 | if (NILP (file)) | |
5415 | { | |
5416 | fclose (dribble); | |
5417 | dribble = 0; | |
5418 | } | |
5419 | else | |
5420 | { | |
5421 | file = Fexpand_file_name (file, Qnil); | |
5422 | dribble = fopen (XSTRING (file)->data, "w"); | |
5423 | } | |
5424 | return Qnil; | |
5425 | } | |
5426 | ||
5427 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5428 | "Discard the contents of the terminal input buffer.\n\ | |
5429 | Also cancel any kbd macro being defined.") | |
5430 | () | |
5431 | { | |
5432 | defining_kbd_macro = 0; | |
5433 | update_mode_lines++; | |
5434 | ||
24597608 | 5435 | Vunread_command_events = Qnil; |
86e5706b | 5436 | unread_command_char = -1; |
284f4730 JB |
5437 | |
5438 | discard_tty_input (); | |
5439 | ||
ff0b5f4c JB |
5440 | /* Without the cast, GCC complains that this assignment loses the |
5441 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5442 | with that? */ | |
5443 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; | |
7b4aedb9 | 5444 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
284f4730 JB |
5445 | input_pending = 0; |
5446 | ||
5447 | return Qnil; | |
5448 | } | |
5449 | \f | |
5450 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5451 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5452 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
5453 | control, run a subshell instead.\n\n\ | |
284f4730 | 5454 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
5455 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
5456 | \n\ | |
7df30614 | 5457 | Before suspending, call the functions in `suspend-hook' with no args.\n\ |
b7d2ebbf RS |
5458 | If any of them returns nil, don't call the rest and don't suspend.\n\ |
5459 | Otherwise, suspend normally and after resumption run the normal hook\n\ | |
284f4730 JB |
5460 | `suspend-resume-hook' if that is bound and non-nil.\n\ |
5461 | \n\ | |
5462 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 5463 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
5464 | (stuffstring) |
5465 | Lisp_Object stuffstring; | |
5466 | { | |
3a69360c | 5467 | Lisp_Object tem; |
284f4730 JB |
5468 | int count = specpdl_ptr - specpdl; |
5469 | int old_height, old_width; | |
5470 | int width, height; | |
b7d2ebbf | 5471 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
5472 | extern init_sys_modes (); |
5473 | ||
5474 | if (!NILP (stuffstring)) | |
5475 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 5476 | |
1e95ed28 JB |
5477 | /* Run the functions in suspend-hook. */ |
5478 | if (!NILP (Vrun_hooks)) | |
5479 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 5480 | |
b7d2ebbf | 5481 | GCPRO1 (stuffstring); |
ff11dfa1 | 5482 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
5483 | reset_sys_modes (); |
5484 | /* sys_suspend can get an error if it tries to fork a subshell | |
5485 | and the system resources aren't available for that. */ | |
5486 | record_unwind_protect (init_sys_modes, 0); | |
5487 | stuff_buffered_input (stuffstring); | |
8026024c KH |
5488 | if (cannot_suspend) |
5489 | sys_subshell (); | |
5490 | else | |
5491 | sys_suspend (); | |
284f4730 JB |
5492 | unbind_to (count, Qnil); |
5493 | ||
5494 | /* Check if terminal/window size has changed. | |
5495 | Note that this is not useful when we are running directly | |
5496 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 5497 | get_frame_size (&width, &height); |
284f4730 | 5498 | if (width != old_width || height != old_height) |
f5ea6163 | 5499 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 5500 | |
1e95ed28 | 5501 | /* Run suspend-resume-hook. */ |
284f4730 JB |
5502 | if (!NILP (Vrun_hooks)) |
5503 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
5504 | ||
5505 | UNGCPRO; | |
5506 | return Qnil; | |
5507 | } | |
5508 | ||
5509 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 5510 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
5511 | |
5512 | stuff_buffered_input (stuffstring) | |
5513 | Lisp_Object stuffstring; | |
5514 | { | |
5515 | register unsigned char *p; | |
5516 | ||
5517 | /* stuff_char works only in BSD, versions 4.2 and up. */ | |
5518 | #ifdef BSD | |
5519 | #ifndef BSD4_1 | |
5520 | if (XTYPE (stuffstring) == Lisp_String) | |
5521 | { | |
5522 | register int count; | |
5523 | ||
5524 | p = XSTRING (stuffstring)->data; | |
5525 | count = XSTRING (stuffstring)->size; | |
5526 | while (count-- > 0) | |
5527 | stuff_char (*p++); | |
5528 | stuff_char ('\n'); | |
5529 | } | |
5530 | /* Anything we have read ahead, put back for the shell to read. */ | |
5531 | while (kbd_fetch_ptr != kbd_store_ptr) | |
5532 | { | |
5533 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) | |
5534 | kbd_fetch_ptr = kbd_buffer; | |
5535 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
e9bf89a0 | 5536 | stuff_char (kbd_fetch_ptr->code); |
4bb994d1 | 5537 | kbd_fetch_ptr->kind = no_event; |
7b4aedb9 JB |
5538 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr |
5539 | - kbd_buffer] | |
5540 | = Qnil); | |
284f4730 JB |
5541 | kbd_fetch_ptr++; |
5542 | } | |
5543 | input_pending = 0; | |
5544 | #endif | |
5545 | #endif /* BSD and not BSD4_1 */ | |
5546 | } | |
5547 | \f | |
ffd56f97 JB |
5548 | set_waiting_for_input (time_to_clear) |
5549 | EMACS_TIME *time_to_clear; | |
284f4730 | 5550 | { |
ffd56f97 | 5551 | input_available_clear_time = time_to_clear; |
284f4730 JB |
5552 | |
5553 | /* Tell interrupt_signal to throw back to read_char, */ | |
5554 | waiting_for_input = 1; | |
5555 | ||
5556 | /* If interrupt_signal was called before and buffered a C-g, | |
5557 | make it run again now, to avoid timing error. */ | |
5558 | if (!NILP (Vquit_flag)) | |
5559 | quit_throw_to_read_char (); | |
284f4730 JB |
5560 | } |
5561 | ||
5562 | clear_waiting_for_input () | |
5563 | { | |
5564 | /* Tell interrupt_signal not to throw back to read_char, */ | |
5565 | waiting_for_input = 0; | |
ffd56f97 | 5566 | input_available_clear_time = 0; |
284f4730 JB |
5567 | } |
5568 | ||
5569 | /* This routine is called at interrupt level in response to C-G. | |
5570 | If interrupt_input, this is the handler for SIGINT. | |
5571 | Otherwise, it is called from kbd_buffer_store_event, | |
5572 | in handling SIGIO or SIGTINT. | |
5573 | ||
5574 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
5575 | immediately throw back to read_char. | |
5576 | ||
5577 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
5578 | This causes eval to throw, when it gets a chance. | |
5579 | If quit-flag is already non-nil, it stops the job right away. */ | |
5580 | ||
5581 | SIGTYPE | |
5582 | interrupt_signal () | |
5583 | { | |
5584 | char c; | |
5585 | /* Must preserve main program's value of errno. */ | |
5586 | int old_errno = errno; | |
284f4730 JB |
5587 | |
5588 | #ifdef USG | |
7a80a6f6 RS |
5589 | if (!read_socket_hook && NILP (Vwindow_system)) |
5590 | { | |
5591 | /* USG systems forget handlers when they are used; | |
5592 | must reestablish each time */ | |
5593 | signal (SIGINT, interrupt_signal); | |
5594 | signal (SIGQUIT, interrupt_signal); | |
5595 | } | |
284f4730 JB |
5596 | #endif /* USG */ |
5597 | ||
5598 | cancel_echoing (); | |
5599 | ||
d5045cf9 | 5600 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
5601 | { |
5602 | fflush (stdout); | |
5603 | reset_sys_modes (); | |
5604 | sigfree (); | |
5605 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
5606 | /* | |
5607 | * On systems which can suspend the current process and return to the original | |
5608 | * shell, this command causes the user to end up back at the shell. | |
5609 | * The "Auto-save" and "Abort" questions are not asked until | |
5610 | * the user elects to return to emacs, at which point he can save the current | |
5611 | * job and either dump core or continue. | |
5612 | */ | |
5613 | sys_suspend (); | |
5614 | #else | |
5615 | #ifdef VMS | |
5616 | if (sys_suspend () == -1) | |
5617 | { | |
5618 | printf ("Not running as a subprocess;\n"); | |
5619 | printf ("you can continue or abort.\n"); | |
5620 | } | |
5621 | #else /* not VMS */ | |
5622 | /* Perhaps should really fork an inferior shell? | |
5623 | But that would not provide any way to get back | |
5624 | to the original shell, ever. */ | |
5625 | printf ("No support for stopping a process on this operating system;\n"); | |
5626 | printf ("you can continue or abort.\n"); | |
5627 | #endif /* not VMS */ | |
5628 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
5629 | #ifdef MSDOS |
5630 | /* We must remain inside the screen area when the internal terminal | |
5631 | is used. Note that [Enter] is not echoed by dos. */ | |
5632 | cursor_to (0, 0); | |
5633 | #endif | |
284f4730 JB |
5634 | printf ("Auto-save? (y or n) "); |
5635 | fflush (stdout); | |
5636 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
5637 | { |
5638 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
5639 | #ifdef MSDOS |
5640 | printf ("\r\nAuto-save done"); | |
5641 | #else /* not MSDOS */ | |
9fd7d808 | 5642 | printf ("Auto-save done\n"); |
80e4aa30 | 5643 | #endif /* not MSDOS */ |
9fd7d808 | 5644 | } |
284f4730 | 5645 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
5646 | #ifdef MSDOS |
5647 | printf ("\r\nAbort? (y or n) "); | |
5648 | #else /* not MSDOS */ | |
284f4730 JB |
5649 | #ifdef VMS |
5650 | printf ("Abort (and enter debugger)? (y or n) "); | |
5651 | #else /* not VMS */ | |
5652 | printf ("Abort (and dump core)? (y or n) "); | |
5653 | #endif /* not VMS */ | |
80e4aa30 | 5654 | #endif /* not MSDOS */ |
284f4730 JB |
5655 | fflush (stdout); |
5656 | if (((c = getchar ()) & ~040) == 'Y') | |
5657 | abort (); | |
5658 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
5659 | #ifdef MSDOS |
5660 | printf ("\r\nContinuing...\r\n"); | |
5661 | #else /* not MSDOS */ | |
284f4730 | 5662 | printf ("Continuing...\n"); |
80e4aa30 | 5663 | #endif /* not MSDOS */ |
284f4730 JB |
5664 | fflush (stdout); |
5665 | init_sys_modes (); | |
5666 | } | |
5667 | else | |
5668 | { | |
5669 | /* If executing a function that wants to be interrupted out of | |
5670 | and the user has not deferred quitting by binding `inhibit-quit' | |
5671 | then quit right away. */ | |
5672 | if (immediate_quit && NILP (Vinhibit_quit)) | |
5673 | { | |
5674 | immediate_quit = 0; | |
5675 | sigfree (); | |
5676 | Fsignal (Qquit, Qnil); | |
5677 | } | |
5678 | else | |
5679 | /* Else request quit when it's safe */ | |
5680 | Vquit_flag = Qt; | |
5681 | } | |
5682 | ||
5683 | if (waiting_for_input && !echoing) | |
5684 | quit_throw_to_read_char (); | |
5685 | ||
5686 | errno = old_errno; | |
5687 | } | |
5688 | ||
5689 | /* Handle a C-g by making read_char return C-g. */ | |
5690 | ||
5691 | quit_throw_to_read_char () | |
5692 | { | |
5693 | quit_error_check (); | |
5694 | sigfree (); | |
5695 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 5696 | clear_waiting_for_input (); |
284f4730 JB |
5697 | input_pending = 0; |
5698 | ||
24597608 | 5699 | Vunread_command_events = Qnil; |
86e5706b | 5700 | unread_command_char = -1; |
284f4730 | 5701 | |
e6b01c14 JB |
5702 | #ifdef POLL_FOR_INPUT |
5703 | /* May be > 1 if in recursive minibuffer. */ | |
5704 | if (poll_suppress_count == 0) | |
5705 | abort (); | |
5706 | #endif | |
0dfcc832 | 5707 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
5708 | if (XTYPE (internal_last_event_frame) == Lisp_Frame |
5709 | && XFRAME (internal_last_event_frame) != selected_frame) | |
3b9189f8 | 5710 | Fhandle_switch_frame (make_lispy_switch_frame (internal_last_event_frame)); |
0dfcc832 | 5711 | #endif |
e6b01c14 | 5712 | |
284f4730 JB |
5713 | _longjmp (getcjmp, 1); |
5714 | } | |
5715 | \f | |
5716 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
5717 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
5718 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
5719 | nil means use CBREAK mode.\n\ | |
5720 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 5721 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
5722 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
5723 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
5724 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
5725 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
5726 | See also `current-input-mode'.") | |
284f4730 JB |
5727 | (interrupt, flow, meta, quit) |
5728 | Lisp_Object interrupt, flow, meta, quit; | |
5729 | { | |
5730 | if (!NILP (quit) | |
5731 | && (XTYPE (quit) != Lisp_Int | |
5732 | || XINT (quit) < 0 || XINT (quit) > 0400)) | |
34f04431 RS |
5733 | error ("set-input-mode: QUIT must be an ASCII character"); |
5734 | ||
5735 | #ifdef POLL_FOR_INPUT | |
5736 | stop_polling (); | |
5737 | #endif | |
284f4730 JB |
5738 | |
5739 | reset_sys_modes (); | |
5740 | #ifdef SIGIO | |
5741 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
5742 | #ifdef NO_SOCK_SIGIO | |
5743 | if (read_socket_hook) | |
5744 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
5745 | else | |
5746 | #endif /* NO_SOCK_SIGIO */ | |
5747 | interrupt_input = !NILP (interrupt); | |
5748 | #else /* not SIGIO */ | |
5749 | interrupt_input = 0; | |
5750 | #endif /* not SIGIO */ | |
5751 | /* Our VMS input only works by interrupts, as of now. */ | |
5752 | #ifdef VMS | |
5753 | interrupt_input = 1; | |
5754 | #endif | |
5755 | flow_control = !NILP (flow); | |
b04904fb RS |
5756 | if (NILP (meta)) |
5757 | meta_key = 0; | |
5758 | else if (EQ (meta, Qt)) | |
5759 | meta_key = 1; | |
5760 | else | |
5761 | meta_key = 2; | |
284f4730 JB |
5762 | if (!NILP (quit)) |
5763 | /* Don't let this value be out of range. */ | |
5764 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
5765 | ||
5766 | init_sys_modes (); | |
34f04431 RS |
5767 | |
5768 | #ifdef POLL_FOR_INPUT | |
5769 | poll_suppress_count = 1; | |
5770 | start_polling (); | |
5771 | #endif | |
284f4730 JB |
5772 | return Qnil; |
5773 | } | |
80645119 JB |
5774 | |
5775 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
5776 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
5777 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
5778 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
5779 | nil, Emacs is using CBREAK mode.\n\ | |
5780 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
5781 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
5782 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
5783 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
5784 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
5785 | all 8 bits as the character code.\n\ | |
80645119 JB |
5786 | QUIT is the character Emacs currently uses to quit.\n\ |
5787 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 5788 | `set-input-mode'.") |
80645119 JB |
5789 | () |
5790 | { | |
5791 | Lisp_Object val[4]; | |
5792 | ||
5793 | val[0] = interrupt_input ? Qt : Qnil; | |
5794 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 5795 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
7b50ece7 | 5796 | XFASTINT (val[3]) = quit_char; |
80645119 | 5797 | |
bf673a7a | 5798 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
5799 | } |
5800 | ||
284f4730 JB |
5801 | \f |
5802 | init_keyboard () | |
5803 | { | |
284f4730 JB |
5804 | /* This is correct before outermost invocation of the editor loop */ |
5805 | command_loop_level = -1; | |
5806 | immediate_quit = 0; | |
5807 | quit_char = Ctl ('g'); | |
24597608 | 5808 | Vunread_command_events = Qnil; |
86e5706b | 5809 | unread_command_char = -1; |
284f4730 | 5810 | total_keys = 0; |
9deb415a | 5811 | recent_keys_index = 0; |
284f4730 JB |
5812 | kbd_fetch_ptr = kbd_buffer; |
5813 | kbd_store_ptr = kbd_buffer; | |
5814 | do_mouse_tracking = 0; | |
5815 | input_pending = 0; | |
5816 | ||
07d2b8de | 5817 | #ifdef MULTI_FRAME |
8f805655 JB |
5818 | /* This means that command_loop_1 won't try to select anything the first |
5819 | time through. */ | |
3c370943 JB |
5820 | internal_last_event_frame = Qnil; |
5821 | Vlast_event_frame = internal_last_event_frame; | |
7b4aedb9 JB |
5822 | #endif |
5823 | ||
5824 | /* If we're running a dumped Emacs, we need to clear out | |
5825 | kbd_buffer_frame_or_window, in case some events got into it | |
5826 | before we dumped. | |
4bb994d1 | 5827 | |
7b4aedb9 JB |
5828 | If we're running an undumped Emacs, it hasn't been initialized by |
5829 | syms_of_keyboard yet. */ | |
4bb994d1 | 5830 | if (initialized) |
7b4aedb9 | 5831 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
07d2b8de | 5832 | |
7a80a6f6 | 5833 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
5834 | { |
5835 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 5836 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
5837 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
5838 | SIGQUIT and we can't tell which one it will give us. */ | |
5839 | signal (SIGQUIT, interrupt_signal); | |
5840 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 5841 | } |
284f4730 JB |
5842 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
5843 | #ifdef SIGIO | |
7a80a6f6 RS |
5844 | if (!noninteractive) |
5845 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 5846 | #endif /* SIGIO */ |
284f4730 JB |
5847 | |
5848 | /* Use interrupt input by default, if it works and noninterrupt input | |
5849 | has deficiencies. */ | |
5850 | ||
5851 | #ifdef INTERRUPT_INPUT | |
5852 | interrupt_input = 1; | |
5853 | #else | |
5854 | interrupt_input = 0; | |
5855 | #endif | |
5856 | ||
5857 | /* Our VMS input only works by interrupts, as of now. */ | |
5858 | #ifdef VMS | |
5859 | interrupt_input = 1; | |
5860 | #endif | |
5861 | ||
5862 | sigfree (); | |
5863 | dribble = 0; | |
5864 | ||
5865 | if (keyboard_init_hook) | |
5866 | (*keyboard_init_hook) (); | |
5867 | ||
5868 | #ifdef POLL_FOR_INPUT | |
5869 | poll_suppress_count = 1; | |
5870 | start_polling (); | |
5871 | #endif | |
5872 | } | |
5873 | ||
5874 | /* This type's only use is in syms_of_keyboard, to initialize the | |
5875 | event header symbols and put properties on them. */ | |
5876 | struct event_head { | |
5877 | Lisp_Object *var; | |
5878 | char *name; | |
5879 | Lisp_Object *kind; | |
5880 | }; | |
5881 | ||
5882 | struct event_head head_table[] = { | |
7b4aedb9 | 5883 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 5884 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 5885 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
284f4730 JB |
5886 | }; |
5887 | ||
5888 | syms_of_keyboard () | |
5889 | { | |
2e894dab RS |
5890 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
5891 | staticpro (&Qdisabled_command_hook); | |
5892 | ||
284f4730 JB |
5893 | Qself_insert_command = intern ("self-insert-command"); |
5894 | staticpro (&Qself_insert_command); | |
5895 | ||
5896 | Qforward_char = intern ("forward-char"); | |
5897 | staticpro (&Qforward_char); | |
5898 | ||
5899 | Qbackward_char = intern ("backward-char"); | |
5900 | staticpro (&Qbackward_char); | |
5901 | ||
5902 | Qdisabled = intern ("disabled"); | |
5903 | staticpro (&Qdisabled); | |
5904 | ||
e58aa385 RS |
5905 | Qundefined = intern ("undefined"); |
5906 | staticpro (&Qundefined); | |
5907 | ||
86e5706b RS |
5908 | Qpre_command_hook = intern ("pre-command-hook"); |
5909 | staticpro (&Qpre_command_hook); | |
5910 | ||
5911 | Qpost_command_hook = intern ("post-command-hook"); | |
5912 | staticpro (&Qpost_command_hook); | |
5913 | ||
40932d1a RS |
5914 | Qcommand_hook_internal = intern ("command-hook-internal"); |
5915 | staticpro (&Qcommand_hook_internal); | |
5916 | ||
284f4730 JB |
5917 | Qfunction_key = intern ("function-key"); |
5918 | staticpro (&Qfunction_key); | |
13b5e56c | 5919 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 5920 | staticpro (&Qmouse_click); |
284f4730 | 5921 | |
598a9fa7 JB |
5922 | Qmenu_enable = intern ("menu-enable"); |
5923 | staticpro (&Qmenu_enable); | |
5924 | ||
284f4730 JB |
5925 | Qmode_line = intern ("mode-line"); |
5926 | staticpro (&Qmode_line); | |
e5d77022 JB |
5927 | Qvertical_line = intern ("vertical-line"); |
5928 | staticpro (&Qvertical_line); | |
3c370943 JB |
5929 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
5930 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
5931 | Qmenu_bar = intern ("menu-bar"); |
5932 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
5933 | |
5934 | Qabove_handle = intern ("above-handle"); | |
5935 | staticpro (&Qabove_handle); | |
5936 | Qhandle = intern ("handle"); | |
5937 | staticpro (&Qhandle); | |
5938 | Qbelow_handle = intern ("below-handle"); | |
5939 | staticpro (&Qbelow_handle); | |
284f4730 | 5940 | |
cd21b839 | 5941 | Qevent_kind = intern ("event-kind"); |
284f4730 | 5942 | staticpro (&Qevent_kind); |
88cb0656 JB |
5943 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
5944 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
5945 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
5946 | staticpro (&Qevent_symbol_element_mask); | |
5947 | Qmodifier_cache = intern ("modifier-cache"); | |
5948 | staticpro (&Qmodifier_cache); | |
284f4730 | 5949 | |
48e416d4 RS |
5950 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
5951 | staticpro (&Qrecompute_lucid_menubar); | |
5952 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
5953 | staticpro (&Qactivate_menubar_hook); | |
5954 | ||
f4eef8b4 RS |
5955 | Qpolling_period = intern ("polling-period"); |
5956 | staticpro (&Qpolling_period); | |
5957 | ||
284f4730 JB |
5958 | { |
5959 | struct event_head *p; | |
5960 | ||
5961 | for (p = head_table; | |
5962 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
5963 | p++) | |
5964 | { | |
5965 | *p->var = intern (p->name); | |
5966 | staticpro (p->var); | |
5967 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 5968 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
5969 | } |
5970 | } | |
5971 | ||
7b4aedb9 JB |
5972 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
5973 | staticpro (&button_down_location); | |
88cb0656 JB |
5974 | |
5975 | { | |
5976 | int i; | |
5977 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
5978 | ||
5979 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
5980 | for (i = 0; i < len; i++) | |
86e5706b RS |
5981 | if (modifier_names[i]) |
5982 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
5983 | staticpro (&modifier_symbols); |
5984 | } | |
5985 | ||
9deb415a JB |
5986 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
5987 | staticpro (&recent_keys); | |
5988 | ||
6569cc8d | 5989 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 5990 | staticpro (&this_command_keys); |
6569cc8d | 5991 | |
03b4122a BF |
5992 | Qextended_command_history = intern ("extended-command-history"); |
5993 | Fset (Qextended_command_history, Qnil); | |
5994 | staticpro (&Qextended_command_history); | |
5995 | ||
7b4aedb9 JB |
5996 | kbd_buffer_frame_or_window |
5997 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
5998 | staticpro (&kbd_buffer_frame_or_window); | |
4bb994d1 | 5999 | |
24597608 RS |
6000 | accent_key_syms = Qnil; |
6001 | staticpro (&accent_key_syms); | |
6002 | ||
284f4730 JB |
6003 | func_key_syms = Qnil; |
6004 | staticpro (&func_key_syms); | |
6005 | ||
4e0e7d8e RS |
6006 | system_key_syms = Qnil; |
6007 | staticpro (&system_key_syms); | |
6008 | ||
284f4730 JB |
6009 | mouse_syms = Qnil; |
6010 | staticpro (&mouse_syms); | |
6011 | ||
cd21b839 JB |
6012 | unread_switch_frame = Qnil; |
6013 | staticpro (&unread_switch_frame); | |
6014 | ||
284f4730 JB |
6015 | defsubr (&Sread_key_sequence); |
6016 | defsubr (&Srecursive_edit); | |
6017 | defsubr (&Strack_mouse); | |
284f4730 JB |
6018 | defsubr (&Sinput_pending_p); |
6019 | defsubr (&Scommand_execute); | |
6020 | defsubr (&Srecent_keys); | |
6021 | defsubr (&Sthis_command_keys); | |
6022 | defsubr (&Ssuspend_emacs); | |
6023 | defsubr (&Sabort_recursive_edit); | |
6024 | defsubr (&Sexit_recursive_edit); | |
6025 | defsubr (&Srecursion_depth); | |
6026 | defsubr (&Stop_level); | |
6027 | defsubr (&Sdiscard_input); | |
6028 | defsubr (&Sopen_dribble_file); | |
6029 | defsubr (&Sset_input_mode); | |
80645119 | 6030 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6031 | defsubr (&Sexecute_extended_command); |
6032 | ||
284f4730 | 6033 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6034 | "Last input event that was part of a command."); |
6035 | ||
186cf719 | 6036 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6037 | "Last input event that was part of a command."); |
284f4730 | 6038 | |
7d6de002 | 6039 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6040 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6041 | Mouse menus give back keys that don't look like mouse events;\n\ |
6042 | this variable holds the actual mouse event that led to the menu,\n\ | |
6043 | so that you can determine whether the command was run by mouse or not."); | |
6044 | ||
284f4730 | 6045 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6046 | "Last input event."); |
6047 | ||
186cf719 | 6048 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6049 | "Last input event."); |
284f4730 | 6050 | |
24597608 | 6051 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6052 | "List of objects to be read as next command input events."); |
284f4730 | 6053 | |
86e5706b RS |
6054 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6055 | "If not -1, an object to be read as next command input event."); | |
6056 | ||
284f4730 JB |
6057 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6058 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6059 | turns into this character followed by foo."); | |
6060 | XSET (meta_prefix_char, Lisp_Int, 033); | |
6061 | ||
6062 | DEFVAR_LISP ("last-command", &last_command, | |
6063 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6064 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
6065 | `this-command' was set to by that command."); | |
6066 | last_command = Qnil; | |
6067 | ||
6068 | DEFVAR_LISP ("this-command", &this_command, | |
6069 | "The command now being executed.\n\ | |
6070 | The command can set this variable; whatever is put here\n\ | |
6071 | will be in `last-command' during the following command."); | |
6072 | this_command = Qnil; | |
6073 | ||
6074 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6075 | "*Number of keyboard input characters between auto-saves.\n\ | |
6076 | Zero means disable autosaving due to number of characters typed."); | |
6077 | auto_save_interval = 300; | |
6078 | ||
6079 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6080 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6081 | Zero or nil means disable auto-saving due to idleness.\n\ |
6082 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6083 | Emacs also does a garbage collection if that seems to be warranted."); |
284f4730 JB |
6084 | XFASTINT (Vauto_save_timeout) = 30; |
6085 | ||
6086 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6087 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6088 | echo_keystrokes = 1; | |
6089 | ||
6090 | DEFVAR_INT ("polling-period", &polling_period, | |
6091 | "*Interval between polling for input during Lisp execution.\n\ | |
6092 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6093 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6094 | Polling is automatically disabled in all other cases."); | |
6095 | polling_period = 2; | |
6096 | ||
564dc952 | 6097 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6098 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6099 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6100 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6101 | by position only."); |
aab06933 | 6102 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6103 | |
284f4730 JB |
6104 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
6105 | "*Number of complete keys read from the keyboard so far."); | |
6106 | num_input_keys = 0; | |
6107 | ||
ff11dfa1 | 6108 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
fce33686 JB |
6109 | "*The frame in which the most recently read event occurred.\n\ |
6110 | If the last event came from a keyboard macro, this is set to `macro'."); | |
ff11dfa1 | 6111 | Vlast_event_frame = Qnil; |
284f4730 | 6112 | |
7e85b935 | 6113 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6114 | "Character to recognize as meaning Help.\n\ |
6115 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6116 | If the value of `help-form' is nil, this char can be read normally."); | |
7e85b935 | 6117 | XSET (Vhelp_char, Lisp_Int, Ctl ('H')); |
284f4730 JB |
6118 | |
6119 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6120 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6121 | If the form returns a string, that string is displayed.\n\ |
6122 | If `help-form' is nil, the help char is not recognized."); | |
6123 | Vhelp_form = Qnil; | |
6124 | ||
7e85b935 RS |
6125 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6126 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6127 | This command is used only when there is no actual binding\n\ | |
6128 | for that character after that prefix key."); | |
6129 | Vprefix_help_command = Qnil; | |
6130 | ||
284f4730 JB |
6131 | DEFVAR_LISP ("top-level", &Vtop_level, |
6132 | "Form to evaluate when Emacs starts up.\n\ | |
6133 | Useful to set before you dump a modified Emacs."); | |
6134 | Vtop_level = Qnil; | |
6135 | ||
6136 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6137 | "String used as translate table for keyboard input, or nil.\n\ | |
6138 | Each character is looked up in this string and the contents used instead.\n\ | |
6139 | If string is of length N, character codes N and up are untranslated."); | |
6140 | Vkeyboard_translate_table = Qnil; | |
6141 | ||
a612e298 RS |
6142 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6143 | "Keymap of key translations that can override keymaps.\n\ | |
6144 | This keymap works like `function-key-map', but comes after that,\n\ | |
6145 | and applies even for keys that have ordinary bindings."); | |
6146 | Vkey_translation_map = Qnil; | |
6147 | ||
8026024c KH |
6148 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6149 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6150 | even if the operating system has support for stopping a process."); | |
6151 | cannot_suspend = 0; | |
6152 | ||
284f4730 | 6153 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6154 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6155 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6156 | for elements that have prompt strings.\n\ |
6157 | The menu is displayed on the screen\n\ | |
6158 | if X menus were enabled at configuration\n\ | |
6159 | time and the previous event was a mouse click prefix key.\n\ | |
6160 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6161 | menu_prompting = 1; |
6162 | ||
6163 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6164 | "Character to see next line of menu prompt.\n\ | |
6165 | Type this character while in a menu prompt to rotate around the lines of it."); | |
6166 | XSET (menu_prompt_more_char, Lisp_Int, ' '); | |
9fa4395d RS |
6167 | |
6168 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6169 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6170 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6171 | character it reads. For example, after evaluating the expression\n\ | |
80645119 JB |
6172 | (setq extra-keyboard-modifiers ?\C-x)\n\ |
6173 | all input characters will have the control modifier applied to them.\n\ | |
6174 | \n\ | |
6175 | Note that the character ?\C-@, equivalent to the integer zero, does\n\ | |
6176 | not count as a control character; rather, it counts as a character\n\ | |
27203ead | 6177 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6178 | cancels any modification."); |
9fa4395d | 6179 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6180 | |
6181 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6182 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6183 | The command loop sets this to nil before each command,\n\ | |
6184 | and tests the value when the command returns.\n\ | |
6185 | Buffer modification stores t in this variable."); | |
6186 | Vdeactivate_mark = Qnil; | |
6187 | ||
b0f2a7bf KH |
6188 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6189 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6190 | Vcommand_hook_internal = Qnil; | |
6191 | ||
86e5706b | 6192 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6193 | "Normal hook run before each command is executed.\n\ |
6194 | While the hook is run, its value is temporarily set to nil\n\ | |
6195 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6196 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6197 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6198 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6199 | Vpre_command_hook = Qnil; |
6200 | ||
6201 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6202 | "Normal hook run after each command is executed.\n\ |
6203 | While the hook is run, its value is temporarily set to nil\n\ | |
6204 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6205 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6206 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6207 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6208 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6209 | |
6210 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6211 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6212 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6213 | |
9f9c0e27 RS |
6214 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6215 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6216 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6217 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6218 | |
9dd3131c RS |
6219 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6220 | "Keymap that overrides all other local keymaps.\n\ | |
6221 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6222 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6223 | Voverriding_local_map = Qnil; | |
6224 | ||
e9bf89a0 RS |
6225 | DEFVAR_BOOL ("track-mouse", &do_mouse_tracking, |
6226 | "*Non-nil means generate motion events for mouse motion."); | |
80e4aa30 | 6227 | |
270a208f RS |
6228 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6229 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6230 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6231 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6232 | and SYMBOL is its name."); |
a69a8ca2 | 6233 | Vsystem_key_alist = Qnil; |
284f4730 JB |
6234 | } |
6235 | ||
6236 | keys_of_keyboard () | |
6237 | { | |
6238 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6239 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6240 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6241 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6242 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6243 | } |