Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
0d882d52 | 2 | Copyright (C) 1985,86,87,88,89,93,94,95 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 | 24 | #include <stdio.h> |
284f4730 JB |
25 | #include "termchar.h" |
26 | #include "termopts.h" | |
27 | #include "lisp.h" | |
28 | #include "termhooks.h" | |
29 | #include "macros.h" | |
ff11dfa1 | 30 | #include "frame.h" |
284f4730 JB |
31 | #include "window.h" |
32 | #include "commands.h" | |
33 | #include "buffer.h" | |
34 | #include "disptab.h" | |
f4255cd1 | 35 | #include "dispextern.h" |
284f4730 | 36 | #include "keyboard.h" |
497ba7a1 | 37 | #include "intervals.h" |
9ac0d9e0 | 38 | #include "blockinput.h" |
284f4730 JB |
39 | #include <setjmp.h> |
40 | #include <errno.h> | |
41 | ||
80e4aa30 RS |
42 | #ifdef MSDOS |
43 | #include "msdos.h" | |
44 | #include <time.h> | |
45 | #else /* not MSDOS */ | |
284f4730 JB |
46 | #ifndef VMS |
47 | #include <sys/ioctl.h> | |
284f4730 | 48 | #endif |
80e4aa30 | 49 | #endif /* not MSDOS */ |
284f4730 | 50 | |
52baf19e | 51 | #include "syssignal.h" |
6ef5b54f | 52 | #include "systty.h" |
52baf19e | 53 | |
c5e3b6c5 RS |
54 | /* This is to get the definitions of the XK_ symbols. */ |
55 | #ifdef HAVE_X_WINDOWS | |
56 | #include "xterm.h" | |
57 | #endif | |
58 | ||
0c2611c5 RS |
59 | /* Include systime.h after xterm.h to avoid double inclusion of time.h. */ |
60 | #include "systime.h" | |
61 | ||
52baf19e JB |
62 | extern int errno; |
63 | ||
9ac0d9e0 JB |
64 | /* Variables for blockinput.h: */ |
65 | ||
66 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 67 | int interrupt_input_blocked; |
9ac0d9e0 JB |
68 | |
69 | /* Nonzero means an input interrupt has arrived | |
70 | during the current critical section. */ | |
63927c41 | 71 | int interrupt_input_pending; |
9ac0d9e0 JB |
72 | |
73 | ||
437f6112 RS |
74 | /* File descriptor to use for input. */ |
75 | extern int input_fd; | |
284f4730 | 76 | |
bcce3e02 | 77 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
78 | /* Make all keyboard buffers much bigger when using X windows. */ |
79 | #define KBD_BUFFER_SIZE 4096 | |
80 | #else /* No X-windows, character input */ | |
81 | #define KBD_BUFFER_SIZE 256 | |
82 | #endif /* No X-windows */ | |
83 | ||
84 | /* Following definition copied from eval.c */ | |
85 | ||
86 | struct backtrace | |
87 | { | |
88 | struct backtrace *next; | |
89 | Lisp_Object *function; | |
90 | Lisp_Object *args; /* Points to vector of args. */ | |
91 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
92 | args points to slot holding list of | |
93 | unevalled args */ | |
94 | char evalargs; | |
95 | }; | |
96 | ||
6c6083a9 KH |
97 | #ifdef MULTI_PERDISPLAY |
98 | PERDISPLAY *current_perdisplay; | |
a2b20856 | 99 | PERDISPLAY *all_perdisplays; |
6c6083a9 | 100 | #else |
ba72822c | 101 | PERDISPLAY the_only_perdisplay; |
6c6083a9 | 102 | #endif |
612b78ef | 103 | |
284f4730 JB |
104 | /* Non-nil disable property on a command means |
105 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 106 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
107 | |
108 | #define NUM_RECENT_KEYS (100) | |
109 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
110 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 111 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 112 | |
6569cc8d JB |
113 | /* Vector holding the key sequence that invoked the current command. |
114 | It is reused for each command, and it may be longer than the current | |
115 | sequence; this_command_key_count indicates how many elements | |
116 | actually mean something. | |
117 | It's easier to staticpro a single Lisp_Object than an array. */ | |
118 | Lisp_Object this_command_keys; | |
119 | int this_command_key_count; | |
284f4730 JB |
120 | |
121 | extern int minbuf_level; | |
122 | ||
123 | extern struct backtrace *backtrace_list; | |
124 | ||
125 | /* Nonzero means do menu prompting. */ | |
126 | static int menu_prompting; | |
127 | ||
128 | /* Character to see next line of menu prompt. */ | |
129 | static Lisp_Object menu_prompt_more_char; | |
130 | ||
131 | /* For longjmp to where kbd input is being done. */ | |
132 | static jmp_buf getcjmp; | |
133 | ||
134 | /* True while doing kbd input. */ | |
135 | int waiting_for_input; | |
136 | ||
137 | /* True while displaying for echoing. Delays C-g throwing. */ | |
138 | static int echoing; | |
139 | ||
03361bcc RS |
140 | /* Nonzero means disregard local maps for the menu bar. */ |
141 | static int inhibit_local_menu_bar_menus; | |
142 | ||
80e4aa30 | 143 | /* Nonzero means C-g should cause immediate error-signal. */ |
284f4730 JB |
144 | int immediate_quit; |
145 | ||
146 | /* Character to recognize as the help char. */ | |
7e85b935 | 147 | Lisp_Object Vhelp_char; |
284f4730 JB |
148 | |
149 | /* Form to execute when help char is typed. */ | |
150 | Lisp_Object Vhelp_form; | |
151 | ||
7e85b935 RS |
152 | /* Command to run when the help character follows a prefix key. */ |
153 | Lisp_Object Vprefix_help_command; | |
154 | ||
9f9c0e27 RS |
155 | /* List of items that should move to the end of the menu bar. */ |
156 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 157 | |
284f4730 JB |
158 | /* Character that causes a quit. Normally C-g. |
159 | ||
160 | If we are running on an ordinary terminal, this must be an ordinary | |
161 | ASCII char, since we want to make it our interrupt character. | |
162 | ||
163 | If we are not running on an ordinary terminal, it still needs to be | |
164 | an ordinary ASCII char. This character needs to be recognized in | |
165 | the input interrupt handler. At this point, the keystroke is | |
166 | represented as a struct input_event, while the desired quit | |
167 | character is specified as a lispy event. The mapping from struct | |
168 | input_events to lispy events cannot run in an interrupt handler, | |
169 | and the reverse mapping is difficult for anything but ASCII | |
170 | keystrokes. | |
171 | ||
172 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
173 | ASCII character. */ | |
174 | int quit_char; | |
175 | ||
176 | extern Lisp_Object current_global_map; | |
177 | extern int minibuf_level; | |
178 | ||
9dd3131c RS |
179 | /* If non-nil, this is a map that overrides all other local maps. */ |
180 | Lisp_Object Voverriding_local_map; | |
181 | ||
d0a49716 RS |
182 | /* If non-nil, Voverriding_local_map applies to the menu bar. */ |
183 | Lisp_Object Voverriding_local_map_menu_flag; | |
184 | ||
284f4730 JB |
185 | /* Current depth in recursive edits. */ |
186 | int command_loop_level; | |
187 | ||
188 | /* Total number of times command_loop has read a key sequence. */ | |
189 | int num_input_keys; | |
190 | ||
191 | /* Last input character read as a command. */ | |
192 | Lisp_Object last_command_char; | |
193 | ||
7d6de002 RS |
194 | /* Last input character read as a command, not counting menus |
195 | reached by the mouse. */ | |
196 | Lisp_Object last_nonmenu_event; | |
197 | ||
284f4730 JB |
198 | /* Last input character read for any purpose. */ |
199 | Lisp_Object last_input_char; | |
200 | ||
dbc4e1c1 | 201 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
24597608 | 202 | Lisp_Object Vunread_command_events; |
284f4730 | 203 | |
86e5706b RS |
204 | /* If not -1, an event to be read as subsequent command input. */ |
205 | int unread_command_char; | |
206 | ||
cd21b839 JB |
207 | /* If not Qnil, this is a switch-frame event which we decided to put |
208 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 209 | next command input, after any unread_command_events. |
8f805655 JB |
210 | |
211 | read_key_sequence uses this to delay switch-frame events until the | |
212 | end of the key sequence; Fread_char uses it to put off switch-frame | |
213 | events until a non-ASCII event is acceptable as input. */ | |
214 | Lisp_Object unread_switch_frame; | |
cd21b839 | 215 | |
9fa4395d RS |
216 | /* A mask of extra modifier bits to put into every keyboard char. */ |
217 | int extra_keyboard_modifiers; | |
218 | ||
284f4730 JB |
219 | /* Char to use as prefix when a meta character is typed in. |
220 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
221 | ||
222 | Lisp_Object meta_prefix_char; | |
223 | ||
224 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
225 | static int last_non_minibuf_size; | |
226 | ||
06ef7355 | 227 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
228 | static Lisp_Object Vauto_save_timeout; |
229 | ||
230 | /* Total number of times read_char has returned. */ | |
231 | int num_input_chars; | |
232 | ||
51172b6d RS |
233 | /* Total number of times read_char has returned, outside of macros. */ |
234 | int num_nonmacro_input_chars; | |
235 | ||
284f4730 JB |
236 | /* Auto-save automatically when this many characters have been typed |
237 | since the last time. */ | |
238 | ||
239 | static int auto_save_interval; | |
240 | ||
51172b6d | 241 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
242 | |
243 | int last_auto_save; | |
244 | ||
245 | /* Last command executed by the editor command loop, not counting | |
246 | commands that set the prefix argument. */ | |
247 | ||
248 | Lisp_Object last_command; | |
249 | ||
250 | /* The command being executed by the command loop. | |
251 | Commands may set this, and the value set will be copied into last_command | |
252 | instead of the actual command. */ | |
253 | Lisp_Object this_command; | |
254 | ||
b453f72e KH |
255 | /* The value of point when the last command was executed. */ |
256 | int last_point_position; | |
257 | ||
047688cb RS |
258 | /* The buffer that was current when the last command was started. */ |
259 | Lisp_Object last_point_position_buffer; | |
260 | ||
1113d9db JB |
261 | /* The timestamp of the last input event we received from the X server. |
262 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
263 | unsigned long last_event_timestamp; |
264 | ||
265 | Lisp_Object Qself_insert_command; | |
266 | Lisp_Object Qforward_char; | |
267 | Lisp_Object Qbackward_char; | |
e58aa385 | 268 | Lisp_Object Qundefined; |
284f4730 JB |
269 | |
270 | /* read_key_sequence stores here the command definition of the | |
271 | key sequence that it reads. */ | |
272 | Lisp_Object read_key_sequence_cmd; | |
273 | ||
274 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
275 | Lisp_Object Vtop_level; | |
276 | ||
277 | /* User-supplied string to translate input characters through. */ | |
278 | Lisp_Object Vkeyboard_translate_table; | |
279 | ||
280 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
281 | extern Lisp_Object Vfunction_key_map; | |
282 | ||
a612e298 RS |
283 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
284 | Lisp_Object Vkey_translation_map; | |
285 | ||
86e5706b RS |
286 | /* Non-nil means deactivate the mark at end of this command. */ |
287 | Lisp_Object Vdeactivate_mark; | |
288 | ||
48e416d4 RS |
289 | /* Menu bar specified in Lucid Emacs fashion. */ |
290 | ||
291 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
292 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
293 | ||
86e5706b RS |
294 | /* Hooks to run before and after each command. */ |
295 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
296 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
40932d1a | 297 | Lisp_Object Qcommand_hook_internal, Vcommand_hook_internal; |
86e5706b | 298 | |
8a792f3a RS |
299 | /* List of deferred actions to be performed at a later time. |
300 | The precise format isn't relevant here; we just check whether it is nil. */ | |
301 | Lisp_Object Vdeferred_action_list; | |
302 | ||
303 | /* Function to call to handle deferred actions, when there are any. */ | |
304 | Lisp_Object Vdeferred_action_function; | |
3ef14e46 | 305 | Lisp_Object Qdeferred_action_function; |
8a792f3a | 306 | |
284f4730 JB |
307 | /* File in which we write all commands we read. */ |
308 | FILE *dribble; | |
309 | ||
310 | /* Nonzero if input is available. */ | |
311 | int input_pending; | |
312 | ||
b04904fb RS |
313 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
314 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
315 | ||
284f4730 JB |
316 | int meta_key; |
317 | ||
318 | extern char *pending_malloc_warning; | |
319 | ||
beecf6a1 KH |
320 | /* Circular buffer for pre-read keyboard input. */ |
321 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
322 | ||
323 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. | |
324 | ||
325 | The interrupt-level event handlers will never enqueue an event on a | |
326 | frame which is not in Vframe_list, and once an event is dequeued, | |
327 | internal_last_event_frame or the event itself points to the frame. | |
328 | So that's all fine. | |
329 | ||
330 | But while the event is sitting in the queue, it's completely | |
331 | unprotected. Suppose the user types one command which will run for | |
332 | a while and then delete a frame, and then types another event at | |
333 | the frame that will be deleted, before the command gets around to | |
334 | it. Suppose there are no references to this frame elsewhere in | |
335 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
336 | have an event referring to a freed frame, which will crash Emacs | |
337 | when it is dequeued. | |
338 | ||
339 | Similar things happen when an event on a scroll bar is enqueued; the | |
340 | window may be deleted while the event is in the queue. | |
341 | ||
342 | So, we use this vector to protect the frame_or_window field in the | |
343 | event queue. That way, they'll be dequeued as dead frames or | |
344 | windows, but still valid lisp objects. | |
345 | ||
346 | If kbd_buffer[i].kind != no_event, then | |
347 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
348 | == kbd_buffer[i].frame_or_window. */ | |
349 | static Lisp_Object kbd_buffer_frame_or_window; | |
350 | ||
351 | /* Pointer to next available character in kbd_buffer. | |
352 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
353 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
354 | next available char is in kbd_buffer[0]. */ | |
355 | static struct input_event *kbd_fetch_ptr; | |
356 | ||
357 | /* Pointer to next place to store character in kbd_buffer. This | |
358 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
359 | character should go in kbd_buffer[0]. */ | |
360 | static volatile struct input_event *kbd_store_ptr; | |
361 | ||
362 | /* The above pair of variables forms a "queue empty" flag. When we | |
363 | enqueue a non-hook event, we increment kbd_store_ptr. When we | |
364 | dequeue a non-hook event, we increment kbd_fetch_ptr. We say that | |
365 | there is input available iff the two pointers are not equal. | |
366 | ||
367 | Why not just have a flag set and cleared by the enqueuing and | |
368 | dequeuing functions? Such a flag could be screwed up by interrupts | |
369 | at inopportune times. */ | |
370 | ||
2eb6bfbe | 371 | #ifdef HAVE_MOUSE |
a9d77f1f RS |
372 | /* If this flag is a frame, we check mouse_moved to see when the |
373 | mouse moves, and motion events will appear in the input stream. | |
374 | Otherwise, mouse motion is ignored. */ | |
375 | static Lisp_Object do_mouse_tracking; | |
284f4730 JB |
376 | |
377 | /* The window system handling code should set this if the mouse has | |
378 | moved since the last call to the mouse_position_hook. Calling that | |
379 | hook should clear this. Code assumes that if this is set, it can | |
380 | call mouse_position_hook to get the promised position, so don't set | |
381 | it unless you're prepared to substantiate the claim! */ | |
382 | int mouse_moved; | |
2eb6bfbe | 383 | #endif /* HAVE_MOUSE. */ |
284f4730 JB |
384 | |
385 | /* Symbols to head events. */ | |
386 | Lisp_Object Qmouse_movement; | |
3c370943 | 387 | Lisp_Object Qscroll_bar_movement; |
cd21b839 | 388 | Lisp_Object Qswitch_frame; |
bbdc2092 | 389 | Lisp_Object Qdelete_frame; |
af17bd2b KH |
390 | Lisp_Object Qiconify_frame; |
391 | Lisp_Object Qmake_frame_visible; | |
cd21b839 | 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 | ||
8026024c KH |
482 | /* Nonzero means don't try to suspend even if the operating system seems |
483 | to support it. */ | |
484 | static int cannot_suspend; | |
485 | ||
284f4730 JB |
486 | #define min(a,b) ((a)<(b)?(a):(b)) |
487 | #define max(a,b) ((a)>(b)?(a):(b)) | |
488 | ||
489 | /* Install the string STR as the beginning of the string of echoing, | |
490 | so that it serves as a prompt for the next character. | |
491 | Also start echoing. */ | |
492 | ||
493 | echo_prompt (str) | |
494 | char *str; | |
495 | { | |
496 | int len = strlen (str); | |
7a80a6f6 | 497 | |
ba72822c KH |
498 | if (len > ECHOBUFSIZE - 4) |
499 | len = ECHOBUFSIZE - 4; | |
6c6083a9 KH |
500 | bcopy (str, current_perdisplay->echobuf, len); |
501 | current_perdisplay->echoptr = current_perdisplay->echobuf + len; | |
502 | *current_perdisplay->echoptr = '\0'; | |
284f4730 | 503 | |
6c6083a9 | 504 | current_perdisplay->echo_after_prompt = len; |
7a80a6f6 | 505 | |
284f4730 JB |
506 | echo (); |
507 | } | |
508 | ||
509 | /* Add C to the echo string, if echoing is going on. | |
510 | C can be a character, which is printed prettily ("M-C-x" and all that | |
511 | jazz), or a symbol, whose name is printed. */ | |
512 | ||
513 | echo_char (c) | |
514 | Lisp_Object c; | |
515 | { | |
516 | extern char *push_key_description (); | |
517 | ||
6c6083a9 | 518 | if (current_perdisplay->immediate_echo) |
284f4730 | 519 | { |
6c6083a9 | 520 | char *ptr = current_perdisplay->echoptr; |
284f4730 | 521 | |
6c6083a9 | 522 | if (ptr != current_perdisplay->echobuf) |
284f4730 JB |
523 | *ptr++ = ' '; |
524 | ||
525 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 526 | c = EVENT_HEAD (c); |
284f4730 | 527 | |
8c18cbfb | 528 | if (INTEGERP (c)) |
284f4730 | 529 | { |
6c6083a9 | 530 | if (ptr - current_perdisplay->echobuf > ECHOBUFSIZE - 6) |
284f4730 JB |
531 | return; |
532 | ||
cb5df6ae | 533 | ptr = push_key_description (XINT (c), ptr); |
284f4730 | 534 | } |
8c18cbfb | 535 | else if (SYMBOLP (c)) |
284f4730 JB |
536 | { |
537 | struct Lisp_String *name = XSYMBOL (c)->name; | |
6c6083a9 KH |
538 | if (((ptr - current_perdisplay->echobuf) + name->size + 4) |
539 | > ECHOBUFSIZE) | |
284f4730 JB |
540 | return; |
541 | bcopy (name->data, ptr, name->size); | |
542 | ptr += name->size; | |
543 | } | |
544 | ||
6c6083a9 KH |
545 | if (current_perdisplay->echoptr == current_perdisplay->echobuf |
546 | && EQ (c, Vhelp_char)) | |
284f4730 JB |
547 | { |
548 | strcpy (ptr, " (Type ? for further options)"); | |
549 | ptr += strlen (ptr); | |
550 | } | |
551 | ||
552 | *ptr = 0; | |
6c6083a9 | 553 | current_perdisplay->echoptr = ptr; |
284f4730 JB |
554 | |
555 | echo (); | |
556 | } | |
557 | } | |
558 | ||
559 | /* Temporarily add a dash to the end of the echo string if it's not | |
560 | empty, so that it serves as a mini-prompt for the very next character. */ | |
561 | ||
562 | echo_dash () | |
563 | { | |
6c6083a9 KH |
564 | if (!current_perdisplay->immediate_echo |
565 | && current_perdisplay->echoptr == current_perdisplay->echobuf) | |
284f4730 | 566 | return; |
7a80a6f6 | 567 | /* Do nothing if we just printed a prompt. */ |
6c6083a9 KH |
568 | if (current_perdisplay->echo_after_prompt |
569 | == current_perdisplay->echoptr - current_perdisplay->echobuf) | |
7a80a6f6 | 570 | return; |
4bafa972 | 571 | /* Do nothing if not echoing at all. */ |
6c6083a9 | 572 | if (current_perdisplay->echoptr == 0) |
4bafa972 | 573 | return; |
284f4730 JB |
574 | |
575 | /* Put a dash at the end of the buffer temporarily, | |
576 | but make it go away when the next character is added. */ | |
6c6083a9 KH |
577 | current_perdisplay->echoptr[0] = '-'; |
578 | current_perdisplay->echoptr[1] = 0; | |
284f4730 JB |
579 | |
580 | echo (); | |
581 | } | |
582 | ||
583 | /* Display the current echo string, and begin echoing if not already | |
584 | doing so. */ | |
585 | ||
586 | echo () | |
587 | { | |
6c6083a9 | 588 | if (!current_perdisplay->immediate_echo) |
284f4730 JB |
589 | { |
590 | int i; | |
6c6083a9 | 591 | current_perdisplay->immediate_echo = 1; |
284f4730 JB |
592 | |
593 | for (i = 0; i < this_command_key_count; i++) | |
d0a57728 RS |
594 | { |
595 | Lisp_Object c; | |
596 | c = XVECTOR (this_command_keys)->contents[i]; | |
597 | if (! (EVENT_HAS_PARAMETERS (c) | |
598 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
599 | echo_char (c); | |
600 | } | |
284f4730 JB |
601 | echo_dash (); |
602 | } | |
603 | ||
604 | echoing = 1; | |
6c6083a9 | 605 | message1_nolog (current_perdisplay->echobuf); |
284f4730 JB |
606 | echoing = 0; |
607 | ||
608 | if (waiting_for_input && !NILP (Vquit_flag)) | |
609 | quit_throw_to_read_char (); | |
610 | } | |
611 | ||
612 | /* Turn off echoing, for the start of a new command. */ | |
613 | ||
614 | cancel_echoing () | |
615 | { | |
6c6083a9 KH |
616 | current_perdisplay->immediate_echo = 0; |
617 | current_perdisplay->echoptr = current_perdisplay->echobuf; | |
618 | current_perdisplay->echo_after_prompt = -1; | |
284f4730 JB |
619 | } |
620 | ||
621 | /* Return the length of the current echo string. */ | |
622 | ||
623 | static int | |
624 | echo_length () | |
625 | { | |
6c6083a9 | 626 | return current_perdisplay->echoptr - current_perdisplay->echobuf; |
284f4730 JB |
627 | } |
628 | ||
629 | /* Truncate the current echo message to its first LEN chars. | |
630 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 631 | switches frames while entering a key sequence. */ |
284f4730 JB |
632 | |
633 | static void | |
634 | echo_truncate (len) | |
635 | int len; | |
636 | { | |
6c6083a9 KH |
637 | current_perdisplay->echobuf[len] = '\0'; |
638 | current_perdisplay->echoptr = current_perdisplay->echobuf + len; | |
40932d1a | 639 | truncate_echo_area (len); |
284f4730 JB |
640 | } |
641 | ||
642 | \f | |
643 | /* Functions for manipulating this_command_keys. */ | |
644 | static void | |
645 | add_command_key (key) | |
646 | Lisp_Object key; | |
647 | { | |
6569cc8d JB |
648 | int size = XVECTOR (this_command_keys)->size; |
649 | ||
650 | if (this_command_key_count >= size) | |
284f4730 | 651 | { |
9b8eb840 | 652 | Lisp_Object new_keys; |
6569cc8d | 653 | |
9b8eb840 | 654 | new_keys = Fmake_vector (make_number (size * 2), Qnil); |
6569cc8d JB |
655 | bcopy (XVECTOR (this_command_keys)->contents, |
656 | XVECTOR (new_keys)->contents, | |
8f805655 | 657 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
658 | |
659 | this_command_keys = new_keys; | |
284f4730 | 660 | } |
6569cc8d JB |
661 | |
662 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
663 | } |
664 | \f | |
665 | Lisp_Object | |
666 | recursive_edit_1 () | |
667 | { | |
668 | int count = specpdl_ptr - specpdl; | |
669 | Lisp_Object val; | |
670 | ||
671 | if (command_loop_level > 0) | |
672 | { | |
673 | specbind (Qstandard_output, Qt); | |
674 | specbind (Qstandard_input, Qt); | |
675 | } | |
676 | ||
677 | val = command_loop (); | |
678 | if (EQ (val, Qt)) | |
679 | Fsignal (Qquit, Qnil); | |
680 | ||
cb5df6ae | 681 | return unbind_to (count, Qnil); |
284f4730 JB |
682 | } |
683 | ||
684 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
5846638c | 685 | |
284f4730 JB |
686 | record_auto_save () |
687 | { | |
51172b6d | 688 | last_auto_save = num_nonmacro_input_chars; |
284f4730 | 689 | } |
5846638c RS |
690 | |
691 | /* Make an auto save happen as soon as possible at command level. */ | |
692 | ||
693 | force_auto_save_soon () | |
694 | { | |
695 | last_auto_save = - auto_save_interval - 1; | |
241ceaf7 RS |
696 | |
697 | record_asynch_buffer_change (); | |
5846638c | 698 | } |
284f4730 | 699 | \f |
284f4730 JB |
700 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
701 | "Invoke the editor command loop recursively.\n\ | |
702 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
703 | that tells this function to return.\n\ | |
704 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
705 | This function is called by the editor initialization to begin editing.") | |
706 | () | |
707 | { | |
708 | int count = specpdl_ptr - specpdl; | |
709 | Lisp_Object val; | |
710 | ||
711 | command_loop_level++; | |
712 | update_mode_lines = 1; | |
713 | ||
714 | record_unwind_protect (recursive_edit_unwind, | |
715 | (command_loop_level | |
716 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
717 | ? Fcurrent_buffer () | |
718 | : Qnil); | |
719 | recursive_edit_1 (); | |
720 | return unbind_to (count, Qnil); | |
721 | } | |
722 | ||
723 | Lisp_Object | |
724 | recursive_edit_unwind (buffer) | |
725 | Lisp_Object buffer; | |
726 | { | |
727 | if (!NILP (buffer)) | |
728 | Fset_buffer (buffer); | |
729 | ||
730 | command_loop_level--; | |
731 | update_mode_lines = 1; | |
732 | return Qnil; | |
733 | } | |
734 | \f | |
735 | Lisp_Object | |
736 | cmd_error (data) | |
737 | Lisp_Object data; | |
a1341f75 RS |
738 | { |
739 | Vstandard_output = Qt; | |
740 | Vstandard_input = Qt; | |
741 | Vexecuting_macro = Qnil; | |
ff4b06d3 KH |
742 | if (!current_perdisplay) |
743 | abort (); | |
744 | current_perdisplay->Vprefix_arg = Qnil; | |
143e20ce | 745 | cancel_echoing (); |
a1341f75 RS |
746 | cmd_error_internal (data, 0); |
747 | ||
748 | Vquit_flag = Qnil; | |
749 | ||
750 | Vinhibit_quit = Qnil; | |
ff4b06d3 KH |
751 | #ifdef MULTI_PERDISPLAY |
752 | current_perdisplay = 0; | |
753 | #endif | |
a1341f75 RS |
754 | |
755 | return make_number (0); | |
756 | } | |
757 | ||
758 | cmd_error_internal (data, context) | |
759 | Lisp_Object data; | |
760 | char *context; | |
284f4730 JB |
761 | { |
762 | Lisp_Object errmsg, tail, errname, file_error; | |
763 | Lisp_Object stream; | |
764 | struct gcpro gcpro1; | |
765 | int i; | |
766 | ||
767 | Vquit_flag = Qnil; | |
768 | Vinhibit_quit = Qt; | |
284f4730 JB |
769 | echo_area_glyphs = 0; |
770 | ||
ff11dfa1 | 771 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
772 | yet, or we're not interactive, it's best to dump this message out |
773 | to stderr and exit. */ | |
ff11dfa1 | 774 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
775 | || noninteractive) |
776 | stream = Qexternal_debugging_output; | |
777 | else | |
778 | { | |
779 | Fdiscard_input (); | |
780 | bitch_at_user (); | |
781 | stream = Qt; | |
782 | } | |
783 | ||
a1341f75 RS |
784 | if (context != 0) |
785 | write_string_1 (context, -1, stream); | |
786 | ||
284f4730 JB |
787 | errname = Fcar (data); |
788 | ||
789 | if (EQ (errname, Qerror)) | |
790 | { | |
791 | data = Fcdr (data); | |
792 | if (!CONSP (data)) data = Qnil; | |
793 | errmsg = Fcar (data); | |
794 | file_error = Qnil; | |
795 | } | |
796 | else | |
797 | { | |
798 | errmsg = Fget (errname, Qerror_message); | |
799 | file_error = Fmemq (Qfile_error, | |
800 | Fget (errname, Qerror_conditions)); | |
801 | } | |
802 | ||
803 | /* Print an error message including the data items. | |
804 | This is done by printing it into a scratch buffer | |
805 | and then making a copy of the text in the buffer. */ | |
806 | ||
807 | if (!CONSP (data)) data = Qnil; | |
808 | tail = Fcdr (data); | |
809 | GCPRO1 (tail); | |
810 | ||
811 | /* For file-error, make error message by concatenating | |
812 | all the data items. They are all strings. */ | |
813 | if (!NILP (file_error) && !NILP (tail)) | |
814 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
815 | ||
8c18cbfb | 816 | if (STRINGP (errmsg)) |
284f4730 JB |
817 | Fprinc (errmsg, stream); |
818 | else | |
819 | write_string_1 ("peculiar error", -1, stream); | |
820 | ||
821 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
822 | { | |
823 | write_string_1 (i ? ", " : ": ", 2, stream); | |
824 | if (!NILP (file_error)) | |
825 | Fprinc (Fcar (tail), stream); | |
826 | else | |
827 | Fprin1 (Fcar (tail), stream); | |
828 | } | |
829 | UNGCPRO; | |
830 | ||
ff11dfa1 | 831 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 832 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 833 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
834 | || noninteractive) |
835 | { | |
836 | Fterpri (stream); | |
837 | Fkill_emacs (make_number (-1)); | |
838 | } | |
284f4730 JB |
839 | } |
840 | \f | |
841 | Lisp_Object command_loop_1 (); | |
842 | Lisp_Object command_loop_2 (); | |
843 | Lisp_Object top_level_1 (); | |
844 | ||
845 | /* Entry to editor-command-loop. | |
846 | This level has the catches for exiting/returning to editor command loop. | |
847 | It returns nil to exit recursive edit, t to abort it. */ | |
848 | ||
849 | Lisp_Object | |
850 | command_loop () | |
851 | { | |
852 | if (command_loop_level > 0 || minibuf_level > 0) | |
853 | { | |
854 | return internal_catch (Qexit, command_loop_2, Qnil); | |
855 | } | |
856 | else | |
857 | while (1) | |
858 | { | |
859 | internal_catch (Qtop_level, top_level_1, Qnil); | |
860 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
861 | ||
862 | /* End of file in -batch run causes exit here. */ | |
863 | if (noninteractive) | |
864 | Fkill_emacs (Qt); | |
865 | } | |
866 | } | |
867 | ||
868 | /* Here we catch errors in execution of commands within the | |
869 | editing loop, and reenter the editing loop. | |
870 | When there is an error, cmd_error runs and returns a non-nil | |
871 | value to us. A value of nil means that cmd_loop_1 itself | |
872 | returned due to end of file (or end of kbd macro). */ | |
873 | ||
874 | Lisp_Object | |
875 | command_loop_2 () | |
876 | { | |
877 | register Lisp_Object val; | |
878 | ||
879 | do | |
880 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
881 | while (!NILP (val)); | |
882 | ||
883 | return Qnil; | |
884 | } | |
885 | ||
886 | Lisp_Object | |
887 | top_level_2 () | |
888 | { | |
889 | return Feval (Vtop_level); | |
890 | } | |
891 | ||
892 | Lisp_Object | |
893 | top_level_1 () | |
894 | { | |
895 | /* On entry to the outer level, run the startup file */ | |
896 | if (!NILP (Vtop_level)) | |
897 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
898 | else if (!NILP (Vpurify_flag)) | |
899 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
900 | else | |
901 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
902 | return Qnil; | |
903 | } | |
904 | ||
905 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
906 | "Exit all recursive editing levels.") | |
907 | () | |
908 | { | |
909 | Fthrow (Qtop_level, Qnil); | |
910 | } | |
911 | ||
912 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
913 | "Exit from the innermost recursive edit or minibuffer.") | |
914 | () | |
915 | { | |
916 | if (command_loop_level > 0 || minibuf_level > 0) | |
917 | Fthrow (Qexit, Qnil); | |
918 | ||
919 | error ("No recursive edit is in progress"); | |
920 | } | |
921 | ||
922 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
923 | "Abort the command that requested this recursive edit or minibuffer input.") | |
924 | () | |
925 | { | |
926 | if (command_loop_level > 0 || minibuf_level > 0) | |
927 | Fthrow (Qexit, Qt); | |
928 | ||
929 | error ("No recursive edit is in progress"); | |
930 | } | |
931 | \f | |
932 | /* This is the actual command reading loop, | |
933 | sans error-handling encapsulation. */ | |
934 | ||
935 | Lisp_Object Fcommand_execute (); | |
936 | static int read_key_sequence (); | |
1c9784c9 | 937 | static void safe_run_hooks (); |
284f4730 JB |
938 | |
939 | Lisp_Object | |
940 | command_loop_1 () | |
941 | { | |
48e416d4 | 942 | Lisp_Object cmd, tem; |
284f4730 JB |
943 | int lose; |
944 | int nonundocount; | |
945 | Lisp_Object keybuf[30]; | |
946 | int i; | |
947 | int no_redisplay; | |
948 | int no_direct; | |
86e5706b RS |
949 | int prev_modiff; |
950 | struct buffer *prev_buffer; | |
ff4b06d3 | 951 | PERDISPLAY *global_perdisplay = current_perdisplay; |
284f4730 | 952 | |
86e5706b | 953 | Vdeactivate_mark = Qnil; |
284f4730 | 954 | waiting_for_input = 0; |
267de7a1 KH |
955 | if (current_perdisplay) |
956 | cancel_echoing (); | |
284f4730 | 957 | |
284f4730 JB |
958 | nonundocount = 0; |
959 | no_redisplay = 0; | |
960 | this_command_key_count = 0; | |
961 | ||
a612e298 RS |
962 | /* Make sure this hook runs after commands that get errors and |
963 | throw to top level. */ | |
a98ea3f9 RS |
964 | /* Note that the value cell will never directly contain nil |
965 | if the symbol is a local variable. */ | |
966 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
967 | safe_run_hooks (Qpost_command_hook); | |
a612e298 | 968 | |
8a792f3a RS |
969 | if (!NILP (Vdeferred_action_list)) |
970 | call0 (Vdeferred_action_function); | |
971 | ||
51d5a2c9 RS |
972 | /* Do this after running Vpost_command_hook, for consistency. */ |
973 | last_command = this_command; | |
974 | ||
284f4730 JB |
975 | while (1) |
976 | { | |
284f4730 JB |
977 | /* Make sure the current window's buffer is selected. */ |
978 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
979 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
980 | ||
981 | /* Display any malloc warning that just came out. Use while because | |
982 | displaying one warning can cause another. */ | |
983 | ||
984 | while (pending_malloc_warning) | |
985 | display_malloc_warning (); | |
986 | ||
987 | no_direct = 0; | |
988 | ||
86e5706b RS |
989 | Vdeactivate_mark = Qnil; |
990 | ||
284f4730 | 991 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 992 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
993 | |
994 | if (minibuf_level && echo_area_glyphs) | |
995 | { | |
f1bed6d8 RS |
996 | /* Bind inhibit-quit to t so that C-g gets read in |
997 | rather than quitting back to the minibuffer. */ | |
998 | int count = specpdl_ptr - specpdl; | |
999 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 1000 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 1001 | unbind_to (count, Qnil); |
f1bed6d8 | 1002 | |
284f4730 JB |
1003 | echo_area_glyphs = 0; |
1004 | no_direct = 1; | |
1005 | if (!NILP (Vquit_flag)) | |
1006 | { | |
1007 | Vquit_flag = Qnil; | |
24597608 | 1008 | Vunread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
1009 | } |
1010 | } | |
1011 | ||
1012 | #ifdef C_ALLOCA | |
ff4b06d3 | 1013 | alloca (0); /* Cause a garbage collection now */ |
284f4730 JB |
1014 | /* Since we can free the most stuff here. */ |
1015 | #endif /* C_ALLOCA */ | |
1016 | ||
8f805655 | 1017 | #if 0 |
ff11dfa1 | 1018 | #ifdef MULTI_FRAME |
8f805655 JB |
1019 | /* Select the frame that the last event came from. Usually, |
1020 | switch-frame events will take care of this, but if some lisp | |
1021 | code swallows a switch-frame event, we'll fix things up here. | |
1022 | Is this a good idea? */ | |
8c18cbfb | 1023 | if (FRAMEP (internal_last_event_frame) |
3c370943 JB |
1024 | && XFRAME (internal_last_event_frame) != selected_frame) |
1025 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 1026 | #endif |
284f4730 | 1027 | #endif |
48e416d4 RS |
1028 | /* If it has changed current-menubar from previous value, |
1029 | really recompute the menubar from the value. */ | |
a646e520 RS |
1030 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
1031 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
1032 | call0 (Qrecompute_lucid_menubar); |
1033 | ||
8f805655 | 1034 | /* Read next key sequence; i gets its length. */ |
ff4b06d3 | 1035 | i = read_key_sequence (keybuf, sizeof keybuf / sizeof keybuf[0], Qnil, 0); |
8f805655 JB |
1036 | |
1037 | ++num_input_keys; | |
1038 | ||
284f4730 JB |
1039 | /* Now we have read a key sequence of length I, |
1040 | or else I is 0 and we found end of file. */ | |
1041 | ||
1042 | if (i == 0) /* End of file -- happens only in */ | |
1043 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1044 | /* -1 means read_key_sequence got a menu that was rejected. |
1045 | Just loop around and read another command. */ | |
1046 | if (i == -1) | |
1047 | { | |
1048 | cancel_echoing (); | |
1049 | this_command_key_count = 0; | |
ff4b06d3 | 1050 | goto finalize; |
dcc408a0 | 1051 | } |
284f4730 | 1052 | |
284f4730 JB |
1053 | last_command_char = keybuf[i - 1]; |
1054 | ||
75c0b143 RS |
1055 | /* If the previous command tried to force a specific window-start, |
1056 | forget about that, in case this command moves point far away | |
1057 | from that position. */ | |
1058 | XWINDOW (selected_window)->force_start = Qnil; | |
1059 | ||
284f4730 JB |
1060 | cmd = read_key_sequence_cmd; |
1061 | if (!NILP (Vexecuting_macro)) | |
1062 | { | |
1063 | if (!NILP (Vquit_flag)) | |
1064 | { | |
1065 | Vexecuting_macro = Qt; | |
1066 | QUIT; /* Make some noise. */ | |
1067 | /* Will return since macro now empty. */ | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | /* Do redisplay processing after this command except in special | |
40932d1a RS |
1072 | cases identified below that set no_redisplay to 1. |
1073 | (actually, there's currently no way to prevent the redisplay, | |
1074 | and no_redisplay is ignored. | |
beecf6a1 | 1075 | Perhaps someday we will really implement it.) */ |
284f4730 JB |
1076 | no_redisplay = 0; |
1077 | ||
86e5706b RS |
1078 | prev_buffer = current_buffer; |
1079 | prev_modiff = MODIFF; | |
8746da95 | 1080 | last_point_position = PT; |
18cd2eeb | 1081 | XSETBUFFER (last_point_position_buffer, prev_buffer); |
86e5706b | 1082 | |
284f4730 JB |
1083 | /* Execute the command. */ |
1084 | ||
86e5706b | 1085 | this_command = cmd; |
a98ea3f9 RS |
1086 | /* Note that the value cell will never directly contain nil |
1087 | if the symbol is a local variable. */ | |
1088 | if (!NILP (XSYMBOL (Qpre_command_hook)->value) && !NILP (Vrun_hooks)) | |
1089 | safe_run_hooks (Qpre_command_hook); | |
86e5706b | 1090 | |
258bf746 | 1091 | if (NILP (this_command)) |
284f4730 JB |
1092 | { |
1093 | /* nil means key is undefined. */ | |
1094 | bitch_at_user (); | |
1095 | defining_kbd_macro = 0; | |
1096 | update_mode_lines = 1; | |
ff4b06d3 | 1097 | current_perdisplay->Vprefix_arg = Qnil; |
86e5706b | 1098 | |
284f4730 JB |
1099 | } |
1100 | else | |
1101 | { | |
ff4b06d3 | 1102 | if (NILP (current_perdisplay->Vprefix_arg) && ! no_direct) |
284f4730 JB |
1103 | { |
1104 | /* Recognize some common commands in common situations and | |
1105 | do them directly. */ | |
8001d352 | 1106 | if (EQ (this_command, Qforward_char) && PT < ZV) |
284f4730 JB |
1107 | { |
1108 | struct Lisp_Vector *dp | |
1109 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1110 | lose = FETCH_CHAR (PT); |
1111 | SET_PT (PT + 1); | |
0f7a8fee | 1112 | if ((dp |
82ba47d7 | 1113 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1114 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1115 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1116 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1117 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1118 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1119 | >= MODIFF) | |
1120 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1121 | == PT - 1) |
284f4730 JB |
1122 | && !windows_or_buffers_changed |
1123 | && EQ (current_buffer->selective_display, Qnil) | |
1124 | && !detect_input_pending () | |
1125 | && NILP (Vexecuting_macro)) | |
1126 | no_redisplay = direct_output_forward_char (1); | |
1127 | goto directly_done; | |
1128 | } | |
8001d352 | 1129 | else if (EQ (this_command, Qbackward_char) && PT > BEGV) |
284f4730 JB |
1130 | { |
1131 | struct Lisp_Vector *dp | |
1132 | = window_display_table (XWINDOW (selected_window)); | |
8001d352 KH |
1133 | SET_PT (PT - 1); |
1134 | lose = FETCH_CHAR (PT); | |
0f7a8fee | 1135 | if ((dp |
ca873d73 | 1136 | ? (VECTORP (DISP_CHAR_VECTOR (dp, lose)) |
9a5540db RS |
1137 | ? XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1 |
1138 | : (NILP (DISP_CHAR_VECTOR (dp, lose)) | |
1139 | && (lose >= 0x20 && lose < 0x7f))) | |
0f7a8fee | 1140 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1141 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1142 | >= MODIFF) | |
1143 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
8001d352 | 1144 | == PT + 1) |
284f4730 JB |
1145 | && !windows_or_buffers_changed |
1146 | && EQ (current_buffer->selective_display, Qnil) | |
1147 | && !detect_input_pending () | |
1148 | && NILP (Vexecuting_macro)) | |
1149 | no_redisplay = direct_output_forward_char (-1); | |
1150 | goto directly_done; | |
1151 | } | |
258bf746 | 1152 | else if (EQ (this_command, Qself_insert_command) |
284f4730 | 1153 | /* Try this optimization only on ascii keystrokes. */ |
8c18cbfb | 1154 | && INTEGERP (last_command_char)) |
284f4730 JB |
1155 | { |
1156 | unsigned char c = XINT (last_command_char); | |
fc9cce4e | 1157 | int value; |
284f4730 | 1158 | |
fc9cce4e RS |
1159 | if (NILP (Vexecuting_macro) |
1160 | && !EQ (minibuf_window, selected_window)) | |
284f4730 JB |
1161 | { |
1162 | if (!nonundocount || nonundocount >= 20) | |
1163 | { | |
1164 | Fundo_boundary (); | |
1165 | nonundocount = 0; | |
1166 | } | |
1167 | nonundocount++; | |
1168 | } | |
fc9cce4e RS |
1169 | lose = ((XFASTINT (XWINDOW (selected_window)->last_modified) |
1170 | < MODIFF) | |
1171 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1172 | != PT) | |
4c61f38e | 1173 | || MODIFF <= SAVE_MODIFF |
fc9cce4e RS |
1174 | || windows_or_buffers_changed |
1175 | || !EQ (current_buffer->selective_display, Qnil) | |
1176 | || detect_input_pending () | |
1177 | || !NILP (Vexecuting_macro)); | |
1178 | value = internal_self_insert (c, 0); | |
1179 | if (value) | |
1180 | lose = 1; | |
1181 | if (value == 2) | |
1182 | nonundocount = 0; | |
1183 | ||
1184 | if (!lose | |
1185 | && (PT == ZV || FETCH_CHAR (PT) == '\n')) | |
284f4730 JB |
1186 | { |
1187 | struct Lisp_Vector *dp | |
1188 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1189 | int lose = c; |
284f4730 | 1190 | |
0f7a8fee JB |
1191 | if (dp) |
1192 | { | |
9b8eb840 | 1193 | Lisp_Object obj; |
0f7a8fee | 1194 | |
9b8eb840 | 1195 | obj = DISP_CHAR_VECTOR (dp, lose); |
054c8675 | 1196 | if (NILP (obj)) |
8e91f441 RS |
1197 | { |
1198 | /* Do it only for char codes | |
1199 | that by default display as themselves. */ | |
1200 | if (lose >= 0x20 && lose <= 0x7e) | |
1201 | no_redisplay = direct_output_for_insert (lose); | |
1202 | } | |
8c18cbfb | 1203 | else if (VECTORP (obj) |
054c8675 | 1204 | && XVECTOR (obj)->size == 1 |
8c18cbfb KH |
1205 | && (obj = XVECTOR (obj)->contents[0], |
1206 | INTEGERP (obj)) | |
054c8675 RS |
1207 | /* Insist face not specified in glyph. */ |
1208 | && (XINT (obj) & ((-1) << 8)) == 0) | |
bd48a052 RS |
1209 | no_redisplay |
1210 | = direct_output_for_insert (XINT (obj)); | |
0f7a8fee JB |
1211 | } |
1212 | else | |
1213 | { | |
1214 | if (lose >= 0x20 && lose <= 0x7e) | |
1215 | no_redisplay = direct_output_for_insert (lose); | |
1216 | } | |
284f4730 JB |
1217 | } |
1218 | goto directly_done; | |
1219 | } | |
1220 | } | |
1221 | ||
1222 | /* Here for a command that isn't executed directly */ | |
1223 | ||
1224 | nonundocount = 0; | |
ff4b06d3 | 1225 | if (NILP (current_perdisplay->Vprefix_arg)) |
284f4730 | 1226 | Fundo_boundary (); |
258bf746 | 1227 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1228 | |
284f4730 | 1229 | } |
a764a753 | 1230 | directly_done: ; |
284f4730 | 1231 | |
a98ea3f9 RS |
1232 | /* Note that the value cell will never directly contain nil |
1233 | if the symbol is a local variable. */ | |
1234 | if (!NILP (XSYMBOL (Qpost_command_hook)->value) && !NILP (Vrun_hooks)) | |
1235 | safe_run_hooks (Qpost_command_hook); | |
86e5706b | 1236 | |
8a792f3a | 1237 | if (!NILP (Vdeferred_action_list)) |
3ef14e46 | 1238 | safe_run_hooks (Qdeferred_action_function); |
8a792f3a | 1239 | |
284f4730 JB |
1240 | /* If there is a prefix argument, |
1241 | 1) We don't want last_command to be ``universal-argument'' | |
1242 | (that would be dumb), so don't set last_command, | |
1243 | 2) we want to leave echoing on so that the prefix will be | |
1244 | echoed as part of this key sequence, so don't call | |
1245 | cancel_echoing, and | |
1246 | 3) we want to leave this_command_key_count non-zero, so that | |
1247 | read_char will realize that it is re-reading a character, and | |
1248 | not echo it a second time. */ | |
ff4b06d3 | 1249 | if (NILP (current_perdisplay->Vprefix_arg)) |
284f4730 JB |
1250 | { |
1251 | last_command = this_command; | |
1252 | cancel_echoing (); | |
1253 | this_command_key_count = 0; | |
1254 | } | |
86e5706b | 1255 | |
88ce066e | 1256 | if (!NILP (current_buffer->mark_active) && !NILP (Vrun_hooks)) |
86e5706b RS |
1257 | { |
1258 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1259 | { | |
1260 | current_buffer->mark_active = Qnil; | |
1261 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1262 | } | |
1263 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1264 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1265 | } | |
ff4b06d3 KH |
1266 | |
1267 | finalize: | |
1268 | /* Install chars successfully executed in kbd macro. */ | |
1269 | ||
1270 | if (defining_kbd_macro && NILP (current_perdisplay->Vprefix_arg)) | |
1271 | finalize_kbd_macro_chars (); | |
1272 | ||
1273 | #ifdef MULTI_PERDISPLAY | |
1274 | current_perdisplay = global_perdisplay; | |
1275 | #endif | |
284f4730 JB |
1276 | } |
1277 | } | |
1c9784c9 KH |
1278 | |
1279 | /* If we get an error while running the hook, cause the hook variable | |
1280 | to be nil. Also inhibit quits, so that C-g won't cause the hook | |
1281 | to mysteriously evaporate. */ | |
1282 | static void | |
1283 | safe_run_hooks (hook) | |
a98ea3f9 | 1284 | Lisp_Object hook; |
1c9784c9 | 1285 | { |
68553292 | 1286 | Lisp_Object value; |
1c9784c9 KH |
1287 | int count = specpdl_ptr - specpdl; |
1288 | specbind (Qinhibit_quit, Qt); | |
1289 | ||
a98ea3f9 RS |
1290 | /* We read and set the variable with functions, |
1291 | in case it's buffer-local. */ | |
68553292 | 1292 | value = Vcommand_hook_internal = Fsymbol_value (hook); |
a98ea3f9 | 1293 | Fset (hook, Qnil); |
1c9784c9 | 1294 | call1 (Vrun_hooks, Qcommand_hook_internal); |
68553292 | 1295 | Fset (hook, value); |
1c9784c9 KH |
1296 | |
1297 | unbind_to (count, Qnil); | |
1298 | } | |
284f4730 JB |
1299 | \f |
1300 | /* Number of seconds between polling for input. */ | |
1301 | int polling_period; | |
1302 | ||
eb8c3be9 | 1303 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1304 | int poll_suppress_count; |
1305 | ||
36922b18 | 1306 | /* Nonzero if polling_for_input is actually being used. */ |
284f4730 JB |
1307 | int polling_for_input; |
1308 | ||
36922b18 RS |
1309 | #ifdef POLL_FOR_INPUT |
1310 | ||
284f4730 JB |
1311 | /* Handle an alarm once each second and read pending input |
1312 | so as to handle a C-g if it comces in. */ | |
1313 | ||
1314 | SIGTYPE | |
91c049d4 RS |
1315 | input_poll_signal (signalnum) /* If we don't have an argument, */ |
1316 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 | 1317 | { |
9ac0d9e0 JB |
1318 | if (interrupt_input_blocked == 0 |
1319 | && !waiting_for_input) | |
1320 | read_avail_input (0); | |
284f4730 JB |
1321 | signal (SIGALRM, input_poll_signal); |
1322 | alarm (polling_period); | |
1323 | } | |
1324 | ||
1325 | #endif | |
1326 | ||
1327 | /* Begin signals to poll for input, if they are appropriate. | |
1328 | This function is called unconditionally from various places. */ | |
1329 | ||
1330 | start_polling () | |
1331 | { | |
1332 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1333 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1334 | { |
1335 | poll_suppress_count--; | |
1336 | if (poll_suppress_count == 0) | |
1337 | { | |
1338 | signal (SIGALRM, input_poll_signal); | |
1339 | polling_for_input = 1; | |
1340 | alarm (polling_period); | |
1341 | } | |
1342 | } | |
1343 | #endif | |
1344 | } | |
1345 | ||
1d3195db RS |
1346 | /* Nonzero if we are using polling to handle input asynchronously. */ |
1347 | ||
1348 | int | |
1349 | input_polling_used () | |
1350 | { | |
1351 | #ifdef POLL_FOR_INPUT | |
1352 | return read_socket_hook && !interrupt_input; | |
1353 | #else | |
1354 | return 0; | |
1355 | #endif | |
1356 | } | |
1357 | ||
284f4730 JB |
1358 | /* Turn off polling. */ |
1359 | ||
1360 | stop_polling () | |
1361 | { | |
1362 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1363 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1364 | { |
1365 | if (poll_suppress_count == 0) | |
1366 | { | |
1367 | polling_for_input = 0; | |
1368 | alarm (0); | |
1369 | } | |
1370 | poll_suppress_count++; | |
1371 | } | |
1372 | #endif | |
1373 | } | |
fe8aeef3 RS |
1374 | |
1375 | /* Set the value of poll_suppress_count to COUNT | |
1376 | and start or stop polling accordingly. */ | |
1377 | ||
1378 | void | |
1379 | set_poll_suppress_count (count) | |
1380 | int count; | |
1381 | { | |
1382 | #ifdef POLL_FOR_INPUT | |
1383 | if (count == 0 && poll_suppress_count != 0) | |
1384 | { | |
1385 | poll_suppress_count = 1; | |
1386 | start_polling (); | |
1387 | } | |
1388 | else if (count != 0 && poll_suppress_count == 0) | |
1389 | { | |
1390 | stop_polling (); | |
1391 | } | |
1392 | poll_suppress_count = count; | |
1393 | #endif | |
1394 | } | |
f4eef8b4 | 1395 | |
d0a57728 RS |
1396 | /* Bind polling_period to a value at least N. |
1397 | But don't decrease it. */ | |
1398 | ||
f4eef8b4 RS |
1399 | bind_polling_period (n) |
1400 | int n; | |
1401 | { | |
1402 | #ifdef POLL_FOR_INPUT | |
d0a57728 RS |
1403 | int new = polling_period; |
1404 | ||
1405 | if (n > new) | |
1406 | new = n; | |
1407 | ||
f4eef8b4 | 1408 | stop_polling (); |
d0a57728 RS |
1409 | specbind (Qpolling_period, make_number (new)); |
1410 | /* Start a new alarm with the new period. */ | |
f4eef8b4 RS |
1411 | start_polling (); |
1412 | #endif | |
1413 | } | |
284f4730 | 1414 | \f |
faf5e407 JB |
1415 | /* Applying the control modifier to CHARACTER. */ |
1416 | int | |
1417 | make_ctrl_char (c) | |
1418 | int c; | |
1419 | { | |
d205953b JB |
1420 | /* Save the upper bits here. */ |
1421 | int upper = c & ~0177; | |
1422 | ||
1423 | c &= 0177; | |
1424 | ||
1425 | /* Everything in the columns containing the upper-case letters | |
1426 | denotes a control character. */ | |
1427 | if (c >= 0100 && c < 0140) | |
1428 | { | |
1429 | int oc = c; | |
1430 | c &= ~0140; | |
1431 | /* Set the shift modifier for a control char | |
1432 | made from a shifted letter. But only for letters! */ | |
1433 | if (oc >= 'A' && oc <= 'Z') | |
1434 | c |= shift_modifier; | |
1435 | } | |
1436 | ||
1437 | /* The lower-case letters denote control characters too. */ | |
1438 | else if (c >= 'a' && c <= 'z') | |
1439 | c &= ~0140; | |
1440 | ||
1441 | /* Include the bits for control and shift | |
1442 | only if the basic ASCII code can't indicate them. */ | |
1443 | else if (c >= ' ') | |
1444 | c |= ctrl_modifier; | |
1445 | ||
1446 | /* Replace the high bits. */ | |
1447 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1448 | |
1449 | return c; | |
1450 | } | |
1451 | ||
1452 | ||
1453 | \f | |
284f4730 JB |
1454 | /* Input of single characters from keyboard */ |
1455 | ||
1456 | Lisp_Object print_help (); | |
1457 | static Lisp_Object kbd_buffer_get_event (); | |
e4fe371d | 1458 | static void record_char (); |
284f4730 | 1459 | |
beecf6a1 KH |
1460 | static PERDISPLAY *read_char_perdisplay; |
1461 | static jmp_buf wrong_display_jmpbuf; | |
1462 | ||
284f4730 JB |
1463 | /* read a character from the keyboard; call the redisplay if needed */ |
1464 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1465 | -1 means do not do redisplay, but do do autosaving. | |
1466 | 1 means do both. */ | |
1467 | ||
7d6de002 RS |
1468 | /* The arguments MAPS and NMAPS are for menu prompting. |
1469 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1470 | ||
1471 | PREV_EVENT is the previous input event, or nil if we are reading | |
1472 | the first event of a key sequence. | |
1473 | ||
6569cc8d JB |
1474 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1475 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1476 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1477 | ||
1478 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1479 | |
284f4730 | 1480 | Lisp_Object |
7d6de002 | 1481 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1482 | int commandflag; |
7d6de002 RS |
1483 | int nmaps; |
1484 | Lisp_Object *maps; | |
1485 | Lisp_Object prev_event; | |
1486 | int *used_mouse_menu; | |
284f4730 JB |
1487 | { |
1488 | register Lisp_Object c; | |
1489 | int count; | |
1490 | jmp_buf save_jump; | |
a1341f75 | 1491 | int key_already_recorded = 0; |
e4fe371d RS |
1492 | Lisp_Object also_record; |
1493 | also_record = Qnil; | |
284f4730 | 1494 | |
24597608 | 1495 | if (CONSP (Vunread_command_events)) |
284f4730 | 1496 | { |
24597608 RS |
1497 | c = XCONS (Vunread_command_events)->car; |
1498 | Vunread_command_events = XCONS (Vunread_command_events)->cdr; | |
284f4730 | 1499 | |
284f4730 JB |
1500 | if (this_command_key_count == 0) |
1501 | goto reread_first; | |
1502 | else | |
1503 | goto reread; | |
1504 | } | |
1505 | ||
86e5706b RS |
1506 | if (unread_command_char != -1) |
1507 | { | |
18cd2eeb | 1508 | XSETINT (c, unread_command_char); |
86e5706b RS |
1509 | unread_command_char = -1; |
1510 | ||
1511 | if (this_command_key_count == 0) | |
1512 | goto reread_first; | |
1513 | else | |
1514 | goto reread; | |
1515 | } | |
1516 | ||
284f4730 JB |
1517 | if (!NILP (Vexecuting_macro)) |
1518 | { | |
07d2b8de | 1519 | #ifdef MULTI_FRAME |
fce33686 JB |
1520 | /* We set this to Qmacro; since that's not a frame, nobody will |
1521 | try to switch frames on us, and the selected window will | |
1522 | remain unchanged. | |
1523 | ||
1524 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1525 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1526 | real event came from. Normally, a switch-frame event selects |
1527 | internal_last_event_frame after each command is read, but | |
1528 | events read from a macro should never cause a new frame to be | |
1529 | selected. */ | |
40f239ee KH |
1530 | if (!current_perdisplay) |
1531 | abort (); | |
1532 | current_perdisplay->internal_last_event_frame = Qmacro; | |
1533 | current_perdisplay->Vlast_event_frame = Qmacro; | |
07d2b8de | 1534 | #endif |
fce33686 | 1535 | |
663258f2 JB |
1536 | /* Exit the macro if we are at the end. |
1537 | Also, some things replace the macro with t | |
1538 | to force an early exit. */ | |
1539 | if (EQ (Vexecuting_macro, Qt) | |
1540 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 | 1541 | { |
18cd2eeb | 1542 | XSETINT (c, -1); |
284f4730 JB |
1543 | return c; |
1544 | } | |
1545 | ||
1546 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
8c18cbfb | 1547 | if (STRINGP (Vexecuting_macro) |
86e5706b | 1548 | && (XINT (c) & 0x80)) |
bb9e9bed | 1549 | XSETFASTINT (c, CHAR_META | (XINT (c) & ~0x80)); |
86e5706b | 1550 | |
284f4730 JB |
1551 | executing_macro_index++; |
1552 | ||
1553 | goto from_macro; | |
1554 | } | |
1555 | ||
cd21b839 JB |
1556 | if (!NILP (unread_switch_frame)) |
1557 | { | |
1558 | c = unread_switch_frame; | |
1559 | unread_switch_frame = Qnil; | |
1560 | ||
1561 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1562 | again, so we go to reread_first, rather than reread. */ |
1563 | goto reread_first; | |
cd21b839 JB |
1564 | } |
1565 | ||
3f9929bf RS |
1566 | /* Don't bother updating menu bars while doing mouse tracking. |
1567 | We get events very rapidly then, and the menu bar won't be changing. | |
1568 | We do update the menu bar once on entry to Ftrack_mouse. */ | |
b8556aee | 1569 | if (commandflag > 0 && !input_pending && !detect_input_pending ()) |
e9bf89a0 RS |
1570 | prepare_menu_bars (); |
1571 | ||
284f4730 | 1572 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1573 | save_getcjmp (save_jump); |
284f4730 JB |
1574 | |
1575 | stop_polling (); | |
1576 | ||
1577 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1578 | redisplay (); | |
1579 | ||
1580 | if (_setjmp (getcjmp)) | |
1581 | { | |
18cd2eeb | 1582 | XSETINT (c, quit_char); |
07d2b8de | 1583 | #ifdef MULTI_FRAME |
40f239ee KH |
1584 | XSETFRAME (current_perdisplay->internal_last_event_frame, |
1585 | selected_frame); | |
1586 | current_perdisplay->Vlast_event_frame | |
1587 | = current_perdisplay->internal_last_event_frame; | |
07d2b8de | 1588 | #endif |
04904c29 RS |
1589 | /* If we report the quit char as an event, |
1590 | don't do so more than once. */ | |
1591 | if (!NILP (Vinhibit_quit)) | |
1592 | Vquit_flag = Qnil; | |
284f4730 | 1593 | |
284f4730 JB |
1594 | goto non_reread; |
1595 | } | |
1596 | ||
1597 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
6c6083a9 KH |
1598 | if (echo_area_glyphs && *echo_area_glyphs |
1599 | && echo_area_glyphs != current_perdisplay->echobuf) | |
284f4730 JB |
1600 | cancel_echoing (); |
1601 | else | |
1602 | /* If already echoing, continue. */ | |
1603 | echo_dash (); | |
1604 | ||
8150596a RS |
1605 | /* Try reading a character via menu prompting in the minibuf. |
1606 | Try this before the sit-for, because the sit-for | |
1607 | would do the wrong thing if we are supposed to do | |
1608 | menu prompting. If EVENT_HAS_PARAMETERS then we are reading | |
1609 | after a mouse event so don't try a minibuf menu. */ | |
1610 | c = Qnil; | |
24597608 RS |
1611 | if (nmaps > 0 && INTERACTIVE |
1612 | && !NILP (prev_event) && ! EVENT_HAS_PARAMETERS (prev_event) | |
1613 | /* Don't bring up a menu if we already have another event. */ | |
1614 | && NILP (Vunread_command_events) | |
1615 | && unread_command_char < 0 | |
b8556aee | 1616 | && !detect_input_pending ()) |
8150596a RS |
1617 | { |
1618 | c = read_char_minibuf_menu_prompt (commandflag, nmaps, maps); | |
24597608 | 1619 | if (! NILP (c)) |
a1341f75 RS |
1620 | { |
1621 | key_already_recorded = 1; | |
1622 | goto non_reread; | |
1623 | } | |
8150596a RS |
1624 | } |
1625 | ||
284f4730 JB |
1626 | /* If in middle of key sequence and minibuffer not active, |
1627 | start echoing if enough time elapses. */ | |
6c6083a9 KH |
1628 | if (minibuf_level == 0 && !current_perdisplay->immediate_echo |
1629 | && this_command_key_count > 0 | |
27203ead | 1630 | && ! noninteractive |
284f4730 JB |
1631 | && echo_keystrokes > 0 |
1632 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1633 | { | |
1634 | Lisp_Object tem0; | |
1635 | ||
7d6de002 RS |
1636 | /* After a mouse event, start echoing right away. |
1637 | This is because we are probably about to display a menu, | |
1638 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1639 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1640 | echo (); |
7d6de002 RS |
1641 | else |
1642 | { | |
1643 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1644 | if (EQ (tem0, Qt)) | |
1645 | echo (); | |
1646 | } | |
284f4730 JB |
1647 | } |
1648 | ||
1649 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1650 | ||
1651 | if (commandflag != 0 | |
1652 | && auto_save_interval > 0 | |
51172b6d | 1653 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1654 | && !detect_input_pending ()) |
1655 | { | |
1656 | jmp_buf temp; | |
1657 | save_getcjmp (temp); | |
1658 | Fdo_auto_save (Qnil, Qnil); | |
ef8fd672 RS |
1659 | /* Hooks can actually change some buffers in auto save. */ |
1660 | redisplay (); | |
284f4730 JB |
1661 | restore_getcjmp (temp); |
1662 | } | |
1663 | ||
8150596a | 1664 | /* Try reading using an X menu. |
24597608 RS |
1665 | This is never confused with reading using the minibuf |
1666 | because the recursive call of read_char in read_char_minibuf_menu_prompt | |
1667 | does not pass on any keymaps. */ | |
1668 | if (nmaps > 0 && INTERACTIVE | |
1669 | && !NILP (prev_event) && EVENT_HAS_PARAMETERS (prev_event) | |
1670 | /* Don't bring up a menu if we already have another event. */ | |
1671 | && NILP (Vunread_command_events) | |
b8556aee | 1672 | && unread_command_char < 0) |
8150596a | 1673 | c = read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); |
7d6de002 | 1674 | |
284f4730 JB |
1675 | /* Slow down auto saves logarithmically in size of current buffer, |
1676 | and garbage collect while we're at it. */ | |
26c1639e | 1677 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1678 | { |
1679 | int delay_level, buffer_size; | |
1680 | ||
1681 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1682 | last_non_minibuf_size = Z - BEG; | |
1683 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1684 | delay_level = 0; | |
1685 | while (buffer_size > 64) | |
1686 | delay_level++, buffer_size -= buffer_size >> 2; | |
1687 | if (delay_level < 4) delay_level = 4; | |
1688 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1689 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1690 | ||
1691 | /* Auto save if enough time goes by without input. */ | |
1692 | if (commandflag != 0 | |
51172b6d | 1693 | && num_nonmacro_input_chars > last_auto_save |
8c18cbfb | 1694 | && INTEGERP (Vauto_save_timeout) |
7d6de002 RS |
1695 | && XINT (Vauto_save_timeout) > 0) |
1696 | { | |
1697 | Lisp_Object tem0; | |
1698 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1699 | tem0 = sit_for (delay, 0, 1, 1); | |
1700 | if (EQ (tem0, Qt)) | |
1701 | { | |
1702 | jmp_buf temp; | |
1703 | save_getcjmp (temp); | |
1704 | Fdo_auto_save (Qnil, Qnil); | |
1705 | restore_getcjmp (temp); | |
1706 | ||
1707 | /* If we have auto-saved and there is still no input | |
1708 | available, garbage collect if there has been enough | |
1709 | consing going on to make it worthwhile. */ | |
1710 | if (!detect_input_pending () | |
1711 | && consing_since_gc > gc_cons_threshold / 2) | |
ef8fd672 RS |
1712 | Fgarbage_collect (); |
1713 | /* prepare_menu_bars isn't safe here, but it should | |
1714 | also be unnecessary. */ | |
1715 | redisplay (); | |
7d6de002 RS |
1716 | } |
1717 | } | |
1718 | } | |
284f4730 | 1719 | |
beecf6a1 | 1720 | if (NILP (c)) |
1e12dd87 | 1721 | { |
beecf6a1 KH |
1722 | PERDISPLAY *perd; |
1723 | /* Check for something on one of the side queues. If we're already | |
1724 | locked to a particular display, just check that one; otherwise | |
1725 | check all of them, but give priority to the most recently used | |
1726 | display. */ | |
1727 | if (current_perdisplay) | |
cd72760c | 1728 | { |
beecf6a1 KH |
1729 | if (CONSP (current_perdisplay->kbd_queue)) |
1730 | perd = current_perdisplay; | |
1731 | else | |
1732 | perd = 0; | |
1733 | } | |
1734 | else if (read_char_perdisplay && CONSP (read_char_perdisplay->kbd_queue)) | |
1735 | perd = read_char_perdisplay; | |
1736 | else | |
1737 | { | |
1738 | for (perd = all_perdisplays; perd; perd = perd->next_perdisplay) | |
1739 | if (CONSP (perd->kbd_queue)) | |
1740 | break; | |
cd72760c | 1741 | } |
284f4730 | 1742 | |
beecf6a1 KH |
1743 | /* If we found something on a side queue, use that. |
1744 | Otherwise, read from the main queue, and if that gives us | |
1745 | something we can't use yet, put it on the side queue and | |
1746 | try again. */ | |
1747 | if (perd) | |
1748 | { | |
1749 | c = XCONS (perd->kbd_queue)->car; | |
1750 | perd->kbd_queue = XCONS (perd->kbd_queue)->cdr; | |
1751 | } | |
1752 | else | |
1753 | { | |
1754 | wrong_display: | |
1755 | /* Actually read a character, waiting if necessary. */ | |
1756 | while (c = kbd_buffer_get_event (&perd), NILP (c)) | |
1757 | { | |
1758 | if (commandflag >= 0 | |
1759 | && !input_pending && !detect_input_pending ()) | |
1760 | { | |
1761 | prepare_menu_bars (); | |
1762 | redisplay (); | |
1763 | } | |
1764 | } | |
1765 | if (current_perdisplay && perd != current_perdisplay) | |
1766 | { | |
1767 | Lisp_Object *tailp = &perd->kbd_queue; | |
1768 | while (CONSP (*tailp)) | |
1769 | tailp = &XCONS (*tailp)->cdr; | |
1770 | if (!NILP (*tailp)) | |
1771 | abort (); | |
1772 | *tailp = Fcons (c, Qnil); | |
1773 | goto wrong_display; | |
1774 | } | |
1775 | } | |
1776 | if (!read_char_perdisplay) | |
1777 | read_char_perdisplay = perd; | |
1778 | if (perd != read_char_perdisplay) | |
1779 | { | |
1780 | /* We shouldn't get here if we were locked onto one display! */ | |
1781 | if (current_perdisplay) | |
1782 | abort (); | |
1783 | perd->kbd_queue = Fcons (c, perd->kbd_queue); | |
1784 | read_char_perdisplay = perd; | |
1785 | longjmp (wrong_display_jmpbuf, 1); | |
1786 | } | |
1787 | } | |
284f4730 | 1788 | /* Terminate Emacs in batch mode if at eof. */ |
8c18cbfb | 1789 | if (noninteractive && INTEGERP (c) && XINT (c) < 0) |
284f4730 JB |
1790 | Fkill_emacs (make_number (1)); |
1791 | ||
8c18cbfb | 1792 | if (INTEGERP (c)) |
80645119 JB |
1793 | { |
1794 | /* Add in any extra modifiers, where appropriate. */ | |
1795 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1796 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1797 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1798 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1799 | |
1800 | /* Transfer any other modifier bits directly from | |
1801 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1802 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1803 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1804 | } |
9fa4395d | 1805 | |
284f4730 JB |
1806 | non_reread: |
1807 | ||
f76475ad | 1808 | restore_getcjmp (save_jump); |
284f4730 JB |
1809 | |
1810 | start_polling (); | |
1811 | ||
dfd11da7 RS |
1812 | /* Buffer switch events are only for internal wakeups |
1813 | so don't show them to the user. */ | |
8c18cbfb | 1814 | if (BUFFERP (c)) |
dfd11da7 RS |
1815 | return c; |
1816 | ||
a1341f75 RS |
1817 | if (key_already_recorded) |
1818 | return c; | |
1819 | ||
dfd11da7 RS |
1820 | /* Wipe the echo area. */ |
1821 | echo_area_glyphs = 0; | |
284f4730 JB |
1822 | |
1823 | /* Handle things that only apply to characters. */ | |
8c18cbfb | 1824 | if (INTEGERP (c)) |
284f4730 JB |
1825 | { |
1826 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1827 | if (XINT (c) == -1) |
284f4730 JB |
1828 | return c; |
1829 | ||
8c18cbfb | 1830 | if (STRINGP (Vkeyboard_translate_table) |
f4255cd1 JB |
1831 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1832 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1833 | } |
1834 | ||
e4fe371d RS |
1835 | /* If this event is a mouse click in the menu bar, |
1836 | return just menu-bar for now. Modify the mouse click event | |
1837 | so we won't do this twice, then queue it up. */ | |
1838 | if (EVENT_HAS_PARAMETERS (c) | |
1839 | && CONSP (XCONS (c)->cdr) | |
1840 | && CONSP (EVENT_START (c)) | |
1841 | && CONSP (XCONS (EVENT_START (c))->cdr)) | |
284f4730 | 1842 | { |
e4fe371d | 1843 | Lisp_Object posn; |
284f4730 | 1844 | |
e4fe371d RS |
1845 | posn = POSN_BUFFER_POSN (EVENT_START (c)); |
1846 | /* Handle menu-bar events: | |
1847 | insert the dummy prefix event `menu-bar'. */ | |
1848 | if (EQ (posn, Qmenu_bar)) | |
1849 | { | |
1850 | /* Change menu-bar to (menu-bar) as the event "position". */ | |
1851 | POSN_BUFFER_POSN (EVENT_START (c)) = Fcons (posn, Qnil); | |
284f4730 | 1852 | |
e4fe371d RS |
1853 | also_record = c; |
1854 | Vunread_command_events = Fcons (c, Vunread_command_events); | |
1855 | c = posn; | |
284f4730 | 1856 | } |
284f4730 JB |
1857 | } |
1858 | ||
e4fe371d RS |
1859 | record_char (c); |
1860 | if (! NILP (also_record)) | |
1861 | record_char (also_record); | |
51172b6d | 1862 | |
284f4730 JB |
1863 | from_macro: |
1864 | reread_first: | |
284f4730 | 1865 | |
b8556aee | 1866 | /* Don't echo mouse motion events. */ |
8ea231fc RS |
1867 | if (echo_keystrokes |
1868 | && ! (EVENT_HAS_PARAMETERS (c) | |
1869 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
e4fe371d RS |
1870 | { |
1871 | echo_char (c); | |
1872 | if (! NILP (also_record)) | |
1873 | echo_char (also_record); | |
1874 | } | |
b8556aee | 1875 | |
db8c1663 | 1876 | /* Record this character as part of the current key. */ |
b8556aee | 1877 | add_command_key (c); |
e4fe371d RS |
1878 | if (! NILP (also_record)) |
1879 | add_command_key (also_record); | |
284f4730 JB |
1880 | |
1881 | /* Re-reading in the middle of a command */ | |
1882 | reread: | |
1883 | last_input_char = c; | |
1884 | num_input_chars++; | |
1885 | ||
1886 | /* Process the help character specially if enabled */ | |
7e85b935 | 1887 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1888 | { |
1889 | Lisp_Object tem0; | |
1890 | count = specpdl_ptr - specpdl; | |
1891 | ||
1892 | record_unwind_protect (Fset_window_configuration, | |
1893 | Fcurrent_window_configuration (Qnil)); | |
1894 | ||
1895 | tem0 = Feval (Vhelp_form); | |
8c18cbfb | 1896 | if (STRINGP (tem0)) |
284f4730 JB |
1897 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); |
1898 | ||
1899 | cancel_echoing (); | |
3cb81011 KH |
1900 | do |
1901 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1902 | while (BUFFERP (c)); |
ff11dfa1 | 1903 | /* Remove the help from the frame */ |
284f4730 | 1904 | unbind_to (count, Qnil); |
e9bf89a0 | 1905 | prepare_menu_bars (); |
284f4730 JB |
1906 | redisplay (); |
1907 | if (EQ (c, make_number (040))) | |
1908 | { | |
1909 | cancel_echoing (); | |
3cb81011 KH |
1910 | do |
1911 | c = read_char (0, 0, 0, Qnil, 0); | |
8c18cbfb | 1912 | while (BUFFERP (c)); |
284f4730 JB |
1913 | } |
1914 | } | |
1915 | ||
1916 | return c; | |
1917 | } | |
1918 | ||
e4fe371d RS |
1919 | /* Record the input event C in various ways. */ |
1920 | ||
1921 | static void | |
1922 | record_char (c) | |
1923 | Lisp_Object c; | |
1924 | { | |
1925 | total_keys++; | |
1926 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; | |
1927 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
1928 | recent_keys_index = 0; | |
1929 | ||
1930 | /* Write c to the dribble file. If c is a lispy event, write | |
1931 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1932 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1933 | if (dribble) | |
1934 | { | |
1935 | if (INTEGERP (c)) | |
1936 | { | |
1937 | if (XUINT (c) < 0x100) | |
1938 | putc (XINT (c), dribble); | |
1939 | else | |
1940 | fprintf (dribble, " 0x%x", XUINT (c)); | |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | Lisp_Object dribblee; | |
1945 | ||
1946 | /* If it's a structured event, take the event header. */ | |
1947 | dribblee = EVENT_HEAD (c); | |
1948 | ||
1949 | if (SYMBOLP (dribblee)) | |
1950 | { | |
1951 | putc ('<', dribble); | |
1952 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), | |
1953 | XSYMBOL (dribblee)->name->size, | |
1954 | dribble); | |
1955 | putc ('>', dribble); | |
1956 | } | |
1957 | } | |
1958 | ||
1959 | fflush (dribble); | |
1960 | } | |
1961 | ||
1962 | store_kbd_macro_char (c); | |
1963 | ||
1964 | num_nonmacro_input_chars++; | |
1965 | } | |
1966 | ||
284f4730 JB |
1967 | Lisp_Object |
1968 | print_help (object) | |
1969 | Lisp_Object object; | |
1970 | { | |
622de3e9 | 1971 | struct buffer *old = current_buffer; |
284f4730 | 1972 | Fprinc (object, Qnil); |
622de3e9 KH |
1973 | set_buffer_internal (XBUFFER (Vstandard_output)); |
1974 | call0 (intern ("help-mode")); | |
1975 | set_buffer_internal (old); | |
284f4730 JB |
1976 | return Qnil; |
1977 | } | |
1978 | ||
1979 | /* Copy out or in the info on where C-g should throw to. | |
1980 | This is used when running Lisp code from within get_char, | |
1981 | in case get_char is called recursively. | |
1982 | See read_process_output. */ | |
1983 | ||
1984 | save_getcjmp (temp) | |
1985 | jmp_buf temp; | |
1986 | { | |
1987 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1988 | } | |
1989 | ||
1990 | restore_getcjmp (temp) | |
1991 | jmp_buf temp; | |
1992 | { | |
1993 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1994 | } | |
1995 | ||
1996 | \f | |
2eb6bfbe RM |
1997 | #ifdef HAVE_MOUSE |
1998 | ||
284f4730 JB |
1999 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
2000 | of this function. */ | |
a9d77f1f | 2001 | |
284f4730 JB |
2002 | static Lisp_Object |
2003 | tracking_off (old_value) | |
2004 | Lisp_Object old_value; | |
2005 | { | |
71edead1 RS |
2006 | do_mouse_tracking = old_value; |
2007 | if (NILP (old_value)) | |
284f4730 | 2008 | { |
284f4730 JB |
2009 | /* Redisplay may have been preempted because there was input |
2010 | available, and it assumes it will be called again after the | |
2011 | input has been processed. If the only input available was | |
2012 | the sort that we have just disabled, then we need to call | |
2013 | redisplay. */ | |
2014 | if (!readable_events ()) | |
2015 | { | |
e9bf89a0 | 2016 | prepare_menu_bars (); |
284f4730 JB |
2017 | redisplay_preserve_echo_area (); |
2018 | get_input_pending (&input_pending); | |
2019 | } | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
2024 | "Evaluate BODY with mouse movement events enabled.\n\ |
2025 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
2026 | you can read with `read-event'.\n\ | |
2027 | Normally, mouse motion is ignored.") | |
284f4730 JB |
2028 | (args) |
2029 | Lisp_Object args; | |
2030 | { | |
2031 | int count = specpdl_ptr - specpdl; | |
2032 | Lisp_Object val; | |
2033 | ||
a9d77f1f | 2034 | record_unwind_protect (tracking_off, do_mouse_tracking); |
284f4730 | 2035 | |
3f9929bf RS |
2036 | if (!input_pending && !detect_input_pending ()) |
2037 | prepare_menu_bars (); | |
2038 | ||
a9d77f1f | 2039 | XSETFRAME (do_mouse_tracking, selected_frame); |
284f4730 JB |
2040 | |
2041 | val = Fprogn (args); | |
2042 | return unbind_to (count, val); | |
2043 | } | |
2eb6bfbe RM |
2044 | |
2045 | #endif /* HAVE_MOUSE */ | |
a612e298 RS |
2046 | \f |
2047 | /* Low level keyboard/mouse input. | |
2048 | kbd_buffer_store_event places events in kbd_buffer, and | |
2049 | kbd_buffer_get_event retrieves them. | |
2050 | mouse_moved indicates when the mouse has moved again, and | |
2051 | *mouse_position_hook provides the mouse position. */ | |
2052 | ||
2053 | /* Return true iff there are any events in the queue that read-char | |
2054 | would return. If this returns false, a read-char would block. */ | |
2055 | static int | |
2056 | readable_events () | |
2057 | { | |
beecf6a1 KH |
2058 | if (kbd_fetch_ptr != kbd_store_ptr) |
2059 | return 1; | |
2060 | #ifdef HAVE_MOUSE | |
2061 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2062 | return 1; | |
2063 | #endif | |
2064 | return 0; | |
a612e298 RS |
2065 | } |
2066 | ||
2067 | /* Set this for debugging, to have a way to get out */ | |
2068 | int stop_character; | |
284f4730 JB |
2069 | |
2070 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
2071 | ||
2072 | void | |
2073 | kbd_buffer_store_event (event) | |
2074 | register struct input_event *event; | |
2075 | { | |
2076 | if (event->kind == no_event) | |
2077 | abort (); | |
2078 | ||
2079 | if (event->kind == ascii_keystroke) | |
2080 | { | |
e9bf89a0 | 2081 | register int c = event->code & 0377; |
284f4730 | 2082 | |
faf5e407 JB |
2083 | if (event->modifiers & ctrl_modifier) |
2084 | c = make_ctrl_char (c); | |
2085 | ||
9fd7d808 RS |
2086 | c |= (event->modifiers |
2087 | & (meta_modifier | alt_modifier | |
2088 | | hyper_modifier | super_modifier)); | |
2089 | ||
86e5706b | 2090 | if (c == quit_char) |
284f4730 | 2091 | { |
3e51c7b7 JB |
2092 | extern SIGTYPE interrupt_signal (); |
2093 | ||
07d2b8de | 2094 | #ifdef MULTI_FRAME |
284f4730 | 2095 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 2096 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 2097 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 2098 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 2099 | { |
9b8eb840 | 2100 | Lisp_Object focus; |
beecf6a1 | 2101 | PERDISPLAY *perd; |
4bb994d1 | 2102 | |
9b8eb840 | 2103 | focus = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); |
4bb994d1 | 2104 | if (NILP (focus)) |
beecf6a1 KH |
2105 | focus = event->frame_or_window; |
2106 | perd = get_perdisplay (XFRAME (focus)); | |
2107 | perd->internal_last_event_frame = focus; | |
2108 | perd->Vlast_event_frame = focus; | |
4bb994d1 | 2109 | } |
07d2b8de | 2110 | #endif |
3e51c7b7 | 2111 | |
ffd56f97 | 2112 | last_event_timestamp = event->timestamp; |
284f4730 JB |
2113 | interrupt_signal (); |
2114 | return; | |
2115 | } | |
2116 | ||
2117 | if (c && c == stop_character) | |
2118 | { | |
2119 | sys_suspend (); | |
2120 | return; | |
2121 | } | |
284f4730 JB |
2122 | } |
2123 | ||
beecf6a1 KH |
2124 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) |
2125 | kbd_store_ptr = kbd_buffer; | |
284f4730 JB |
2126 | |
2127 | /* Don't let the very last slot in the buffer become full, | |
2128 | since that would make the two pointers equal, | |
2129 | and that is indistinguishable from an empty buffer. | |
2130 | Discard the event if it would fill the last slot. */ | |
beecf6a1 | 2131 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) |
284f4730 | 2132 | { |
beecf6a1 | 2133 | volatile struct input_event *sp = kbd_store_ptr; |
612b78ef | 2134 | sp->kind = event->kind; |
27203ead RS |
2135 | if (event->kind == selection_request_event) |
2136 | { | |
2137 | /* We must not use the ordinary copying code for this case, | |
2138 | since `part' is an enum and copying it might not copy enough | |
2139 | in this case. */ | |
612b78ef | 2140 | bcopy (event, (char *) sp, sizeof (*event)); |
27203ead RS |
2141 | } |
2142 | else | |
2143 | { | |
612b78ef KH |
2144 | sp->code = event->code; |
2145 | sp->part = event->part; | |
2146 | sp->frame_or_window = event->frame_or_window; | |
2147 | sp->modifiers = event->modifiers; | |
2148 | sp->x = event->x; | |
2149 | sp->y = event->y; | |
2150 | sp->timestamp = event->timestamp; | |
27203ead | 2151 | } |
beecf6a1 KH |
2152 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
2153 | - kbd_buffer] | |
7b4aedb9 | 2154 | = event->frame_or_window); |
284f4730 | 2155 | |
beecf6a1 | 2156 | kbd_store_ptr++; |
284f4730 JB |
2157 | } |
2158 | } | |
a612e298 RS |
2159 | \f |
2160 | /* Read one event from the event buffer, waiting if necessary. | |
2161 | The value is a Lisp object representing the event. | |
2162 | The value is nil for an event that should be ignored, | |
2163 | or that was handled here. | |
2164 | We always read and discard one event. */ | |
284f4730 JB |
2165 | |
2166 | static Lisp_Object | |
beecf6a1 | 2167 | kbd_buffer_get_event (PERDISPLAY **perdp) |
284f4730 JB |
2168 | { |
2169 | register int c; | |
2170 | Lisp_Object obj; | |
2171 | ||
2172 | if (noninteractive) | |
2173 | { | |
2174 | c = getchar (); | |
18cd2eeb | 2175 | XSETINT (obj, c); |
beecf6a1 | 2176 | *perdp = all_perdisplays; /* There'd better be exactly one! */ |
284f4730 JB |
2177 | return obj; |
2178 | } | |
2179 | ||
2180 | /* Wait until there is input available. */ | |
2181 | for (;;) | |
2182 | { | |
beecf6a1 KH |
2183 | if (kbd_fetch_ptr != kbd_store_ptr) |
2184 | break; | |
2185 | #ifdef HAVE_MOUSE | |
2186 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
284f4730 | 2187 | break; |
beecf6a1 | 2188 | #endif |
284f4730 JB |
2189 | |
2190 | /* If the quit flag is set, then read_char will return | |
2191 | quit_char, so that counts as "available input." */ | |
2192 | if (!NILP (Vquit_flag)) | |
2193 | quit_throw_to_read_char (); | |
2194 | ||
2195 | /* One way or another, wait until input is available; then, if | |
2196 | interrupt handlers have not read it, read it now. */ | |
2197 | ||
2198 | #ifdef OLDVMS | |
2199 | wait_for_kbd_input (); | |
2200 | #else | |
2201 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
2202 | #ifdef SIGIO | |
2203 | gobble_input (0); | |
2204 | #endif /* SIGIO */ | |
beecf6a1 KH |
2205 | if (kbd_fetch_ptr != kbd_store_ptr) |
2206 | break; | |
2207 | #ifdef HAVE_MOUSE | |
2208 | if (FRAMEP (do_mouse_tracking) && mouse_moved) | |
2209 | break; | |
2210 | #endif | |
2211 | { | |
2212 | Lisp_Object minus_one; | |
f76475ad | 2213 | |
beecf6a1 KH |
2214 | XSETINT (minus_one, -1); |
2215 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 | 2216 | |
beecf6a1 KH |
2217 | if (!interrupt_input && kbd_fetch_ptr == kbd_store_ptr) |
2218 | /* Pass 1 for EXPECT since we just waited to have input. */ | |
2219 | read_avail_input (1); | |
2220 | } | |
284f4730 JB |
2221 | #endif /* not VMS */ |
2222 | } | |
2223 | ||
2224 | /* At this point, we know that there is a readable event available | |
2225 | somewhere. If the event queue is empty, then there must be a | |
2226 | mouse movement enabled and available. */ | |
beecf6a1 | 2227 | if (kbd_fetch_ptr != kbd_store_ptr) |
284f4730 | 2228 | { |
cd21b839 | 2229 | struct input_event *event; |
3e51c7b7 | 2230 | |
beecf6a1 KH |
2231 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2232 | ? kbd_fetch_ptr | |
2233 | : kbd_buffer); | |
3e51c7b7 | 2234 | |
cd21b839 | 2235 | last_event_timestamp = event->timestamp; |
cd21b839 | 2236 | |
beecf6a1 KH |
2237 | { |
2238 | Lisp_Object frame; | |
2239 | frame = event->frame_or_window; | |
2240 | if (CONSP (frame)) | |
2241 | frame = XCONS (frame)->car; | |
2242 | else if (WINDOWP (frame)) | |
2243 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
2244 | if (!FRAMEP (frame)) | |
2245 | abort (); | |
2246 | *perdp = get_perdisplay (XFRAME (frame)); | |
2247 | } | |
2248 | ||
4bb994d1 JB |
2249 | obj = Qnil; |
2250 | ||
48e416d4 | 2251 | /* These two kinds of events get special handling |
a612e298 RS |
2252 | and don't actually appear to the command loop. |
2253 | We return nil for them. */ | |
48e416d4 RS |
2254 | if (event->kind == selection_request_event) |
2255 | { | |
598a9fa7 | 2256 | #ifdef HAVE_X11 |
4581e928 RS |
2257 | struct input_event copy = *event; |
2258 | /* Remove it from the buffer before processing it, | |
2259 | since otherwise swallow_events will see it | |
2260 | and process it again. */ | |
beecf6a1 | 2261 | kbd_fetch_ptr = event + 1; |
4581e928 | 2262 | x_handle_selection_request (©); |
598a9fa7 JB |
2263 | #else |
2264 | /* We're getting selection request events, but we don't have | |
2265 | a window system. */ | |
2266 | abort (); | |
2267 | #endif | |
48e416d4 RS |
2268 | } |
2269 | ||
1e12dd87 | 2270 | else if (event->kind == selection_clear_event) |
48e416d4 | 2271 | { |
598a9fa7 | 2272 | #ifdef HAVE_X11 |
48e416d4 | 2273 | x_handle_selection_clear (event); |
beecf6a1 | 2274 | kbd_fetch_ptr = event + 1; |
598a9fa7 JB |
2275 | #else |
2276 | /* We're getting selection request events, but we don't have | |
2277 | a window system. */ | |
2278 | abort (); | |
2279 | #endif | |
48e416d4 | 2280 | } |
990acea3 RS |
2281 | #ifdef HAVE_X11 |
2282 | else if (event->kind == delete_window_event) | |
2283 | { | |
bbdc2092 RS |
2284 | /* Make an event (delete-frame (FRAME)). */ |
2285 | obj = Fcons (event->frame_or_window, Qnil); | |
af17bd2b | 2286 | obj = Fcons (Qdelete_frame, Fcons (obj, Qnil)); |
beecf6a1 | 2287 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2288 | } |
2289 | else if (event->kind == iconify_event) | |
2290 | { | |
2291 | /* Make an event (iconify-frame (FRAME)). */ | |
2292 | obj = Fcons (event->frame_or_window, Qnil); | |
2293 | obj = Fcons (Qiconify_frame, Fcons (obj, Qnil)); | |
beecf6a1 | 2294 | kbd_fetch_ptr = event + 1; |
af17bd2b KH |
2295 | } |
2296 | else if (event->kind == deiconify_event) | |
2297 | { | |
2298 | /* Make an event (make-frame-visible (FRAME)). */ | |
2299 | obj = Fcons (event->frame_or_window, Qnil); | |
2300 | obj = Fcons (Qmake_frame_visible, Fcons (obj, Qnil)); | |
beecf6a1 | 2301 | kbd_fetch_ptr = event + 1; |
990acea3 RS |
2302 | } |
2303 | #endif | |
f5e09c8b RS |
2304 | else if (event->kind == menu_bar_event) |
2305 | { | |
beecf6a1 KH |
2306 | /* The event value is in the cdr of the frame_or_window slot. */ |
2307 | if (!CONSP (event->frame_or_window)) | |
2308 | abort (); | |
2309 | obj = XCONS (event->frame_or_window)->cdr; | |
2310 | kbd_fetch_ptr = event + 1; | |
f5e09c8b | 2311 | } |
a8015ab5 KH |
2312 | else if (event->kind == buffer_switch_event) |
2313 | { | |
2314 | /* The value doesn't matter here; only the type is tested. */ | |
18cd2eeb | 2315 | XSETBUFFER (obj, current_buffer); |
beecf6a1 | 2316 | kbd_fetch_ptr = event + 1; |
a8015ab5 | 2317 | } |
a612e298 RS |
2318 | /* Just discard these, by returning nil. |
2319 | (They shouldn't be found in the buffer, | |
2320 | but on some machines it appears they do show up.) */ | |
2321 | else if (event->kind == no_event) | |
beecf6a1 | 2322 | kbd_fetch_ptr = event + 1; |
48e416d4 | 2323 | |
4bb994d1 JB |
2324 | /* If this event is on a different frame, return a switch-frame this |
2325 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
2326 | else |
2327 | { | |
a6d53864 | 2328 | #ifdef MULTI_FRAME |
9b8eb840 | 2329 | Lisp_Object frame; |
1e12dd87 | 2330 | Lisp_Object focus; |
7b4aedb9 | 2331 | |
9b8eb840 | 2332 | frame = event->frame_or_window; |
8c18cbfb | 2333 | if (WINDOWP (frame)) |
1e12dd87 | 2334 | frame = WINDOW_FRAME (XWINDOW (frame)); |
4bb994d1 | 2335 | |
1e12dd87 RS |
2336 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
2337 | if (! NILP (focus)) | |
2338 | frame = focus; | |
07d2b8de | 2339 | |
beecf6a1 | 2340 | if (! EQ (frame, (*perdp)->internal_last_event_frame) |
1e12dd87 RS |
2341 | && XFRAME (frame) != selected_frame) |
2342 | obj = make_lispy_switch_frame (frame); | |
beecf6a1 | 2343 | (*perdp)->internal_last_event_frame = frame; |
a6d53864 | 2344 | #endif /* MULTI_FRAME */ |
4bb994d1 | 2345 | |
1e12dd87 RS |
2346 | /* If we didn't decide to make a switch-frame event, go ahead |
2347 | and build a real event from the queue entry. */ | |
cd21b839 | 2348 | |
1e12dd87 RS |
2349 | if (NILP (obj)) |
2350 | { | |
2351 | obj = make_lispy_event (event); | |
2352 | ||
2353 | /* Wipe out this event, to catch bugs. */ | |
2354 | event->kind = no_event; | |
beecf6a1 | 2355 | XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] = Qnil; |
1e12dd87 | 2356 | |
beecf6a1 | 2357 | kbd_fetch_ptr = event + 1; |
1e12dd87 | 2358 | } |
4bb994d1 | 2359 | } |
284f4730 | 2360 | } |
2eb6bfbe | 2361 | #ifdef HAVE_MOUSE |
a612e298 | 2362 | /* Try generating a mouse motion event. */ |
a9d77f1f | 2363 | else if (FRAMEP (do_mouse_tracking) && mouse_moved) |
284f4730 | 2364 | { |
a9d77f1f | 2365 | FRAME_PTR f = XFRAME (do_mouse_tracking); |
7b4aedb9 | 2366 | Lisp_Object bar_window; |
3c370943 | 2367 | enum scroll_bar_part part; |
e5d77022 JB |
2368 | Lisp_Object x, y; |
2369 | unsigned long time; | |
284f4730 | 2370 | |
beecf6a1 KH |
2371 | if (!current_perdisplay) |
2372 | abort (); | |
2373 | ||
2374 | *perdp = current_perdisplay; | |
e177ac3a RS |
2375 | /* Note that this uses F to determine which display to look at. |
2376 | If there is no valid info, it does not store anything | |
2377 | so x remains nil. */ | |
2378 | x = Qnil; | |
7b4aedb9 | 2379 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
2380 | |
2381 | obj = Qnil; | |
284f4730 | 2382 | |
07d2b8de | 2383 | #ifdef MULTI_FRAME |
4bb994d1 JB |
2384 | /* Decide if we should generate a switch-frame event. Don't |
2385 | generate switch-frame events for motion outside of all Emacs | |
2386 | frames. */ | |
e177ac3a | 2387 | if (!NILP (x) && f) |
cd21b839 | 2388 | { |
9b8eb840 | 2389 | Lisp_Object frame; |
4bb994d1 | 2390 | |
9b8eb840 | 2391 | frame = FRAME_FOCUS_FRAME (f); |
4bb994d1 | 2392 | if (NILP (frame)) |
18cd2eeb | 2393 | XSETFRAME (frame, f); |
4bb994d1 | 2394 | |
beecf6a1 | 2395 | if (! EQ (frame, (*perdp)->internal_last_event_frame) |
80645119 | 2396 | && XFRAME (frame) != selected_frame) |
764cb3f9 | 2397 | obj = make_lispy_switch_frame (frame); |
beecf6a1 | 2398 | (*perdp)->internal_last_event_frame = frame; |
cd21b839 | 2399 | } |
68553292 | 2400 | #endif |
4bb994d1 JB |
2401 | |
2402 | /* If we didn't decide to make a switch-frame event, go ahead and | |
2403 | return a mouse-motion event. */ | |
e177ac3a | 2404 | if (!NILP (x) && NILP (obj)) |
7b4aedb9 | 2405 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
6cbff1cb | 2406 | } |
2eb6bfbe | 2407 | #endif /* HAVE_MOUSE */ |
284f4730 JB |
2408 | else |
2409 | /* We were promised by the above while loop that there was | |
2410 | something for us to read! */ | |
2411 | abort (); | |
2412 | ||
2413 | input_pending = readable_events (); | |
2414 | ||
3c370943 | 2415 | #ifdef MULTI_FRAME |
beecf6a1 | 2416 | (*perdp)->Vlast_event_frame = (*perdp)->internal_last_event_frame; |
3c370943 JB |
2417 | #endif |
2418 | ||
284f4730 JB |
2419 | return (obj); |
2420 | } | |
a612e298 RS |
2421 | \f |
2422 | /* Process any events that are not user-visible, | |
2423 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2424 | |
2425 | void | |
2426 | swallow_events () | |
2427 | { | |
beecf6a1 | 2428 | while (kbd_fetch_ptr != kbd_store_ptr) |
3a3b9632 RS |
2429 | { |
2430 | struct input_event *event; | |
2431 | ||
beecf6a1 KH |
2432 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
2433 | ? kbd_fetch_ptr | |
2434 | : kbd_buffer); | |
3a3b9632 RS |
2435 | |
2436 | last_event_timestamp = event->timestamp; | |
2437 | ||
2438 | /* These two kinds of events get special handling | |
2439 | and don't actually appear to the command loop. */ | |
2440 | if (event->kind == selection_request_event) | |
2441 | { | |
2442 | #ifdef HAVE_X11 | |
4581e928 RS |
2443 | struct input_event copy; |
2444 | copy = *event; | |
beecf6a1 | 2445 | kbd_fetch_ptr = event + 1; |
4581e928 | 2446 | x_handle_selection_request (©); |
3a3b9632 RS |
2447 | #else |
2448 | /* We're getting selection request events, but we don't have | |
2449 | a window system. */ | |
2450 | abort (); | |
2451 | #endif | |
2452 | } | |
2453 | ||
2454 | else if (event->kind == selection_clear_event) | |
2455 | { | |
2456 | #ifdef HAVE_X11 | |
2457 | x_handle_selection_clear (event); | |
beecf6a1 | 2458 | kbd_fetch_ptr = event + 1; |
3a3b9632 RS |
2459 | #else |
2460 | /* We're getting selection request events, but we don't have | |
2461 | a window system. */ | |
2462 | abort (); | |
2463 | #endif | |
2464 | } | |
2465 | else | |
2466 | break; | |
2467 | } | |
2468 | ||
2469 | get_input_pending (&input_pending); | |
2470 | } | |
a612e298 | 2471 | \f |
284f4730 | 2472 | /* Caches for modify_event_symbol. */ |
e9bf89a0 | 2473 | static Lisp_Object accent_key_syms; |
270a208f | 2474 | static Lisp_Object system_key_syms; |
284f4730 JB |
2475 | static Lisp_Object func_key_syms; |
2476 | static Lisp_Object mouse_syms; | |
2477 | ||
270a208f | 2478 | Lisp_Object Vsystem_key_alist; |
80e4aa30 | 2479 | |
e9bf89a0 RS |
2480 | /* This is a list of keysym codes for special "accent" characters. |
2481 | It parallels lispy_accent_keys. */ | |
2482 | ||
2483 | static int lispy_accent_codes[] = | |
2484 | { | |
79a7046c | 2485 | #ifdef XK_dead_circumflex |
e9bf89a0 | 2486 | XK_dead_circumflex, |
79a7046c RS |
2487 | #else |
2488 | 0, | |
2489 | #endif | |
2490 | #ifdef XK_dead_grave | |
e9bf89a0 | 2491 | XK_dead_grave, |
79a7046c RS |
2492 | #else |
2493 | 0, | |
2494 | #endif | |
2495 | #ifdef XK_dead_tilde | |
e9bf89a0 | 2496 | XK_dead_tilde, |
79a7046c RS |
2497 | #else |
2498 | 0, | |
2499 | #endif | |
2500 | #ifdef XK_dead_diaeresis | |
e9bf89a0 | 2501 | XK_dead_diaeresis, |
79a7046c RS |
2502 | #else |
2503 | 0, | |
2504 | #endif | |
2505 | #ifdef XK_dead_macron | |
e9bf89a0 | 2506 | XK_dead_macron, |
79a7046c RS |
2507 | #else |
2508 | 0, | |
2509 | #endif | |
2510 | #ifdef XK_dead_degree | |
e9bf89a0 | 2511 | XK_dead_degree, |
79a7046c RS |
2512 | #else |
2513 | 0, | |
2514 | #endif | |
2515 | #ifdef XK_dead_acute | |
e9bf89a0 | 2516 | XK_dead_acute, |
79a7046c RS |
2517 | #else |
2518 | 0, | |
2519 | #endif | |
2520 | #ifdef XK_dead_cedilla | |
e9bf89a0 | 2521 | XK_dead_cedilla, |
79a7046c RS |
2522 | #else |
2523 | 0, | |
2524 | #endif | |
2525 | #ifdef XK_dead_breve | |
e9bf89a0 | 2526 | XK_dead_breve, |
79a7046c RS |
2527 | #else |
2528 | 0, | |
2529 | #endif | |
2530 | #ifdef XK_dead_ogonek | |
e9bf89a0 | 2531 | XK_dead_ogonek, |
79a7046c RS |
2532 | #else |
2533 | 0, | |
2534 | #endif | |
2535 | #ifdef XK_dead_caron | |
e9bf89a0 | 2536 | XK_dead_caron, |
79a7046c RS |
2537 | #else |
2538 | 0, | |
2539 | #endif | |
2540 | #ifdef XK_dead_doubleacute | |
e9bf89a0 | 2541 | XK_dead_doubleacute, |
79a7046c RS |
2542 | #else |
2543 | 0, | |
2544 | #endif | |
2545 | #ifdef XK_dead_abovedot | |
e9bf89a0 | 2546 | XK_dead_abovedot, |
79a7046c RS |
2547 | #else |
2548 | 0, | |
2549 | #endif | |
e9bf89a0 RS |
2550 | }; |
2551 | ||
2552 | /* This is a list of Lisp names for special "accent" characters. | |
2553 | It parallels lispy_accent_codes. */ | |
2554 | ||
2555 | static char *lispy_accent_keys[] = | |
2556 | { | |
2557 | "dead-circumflex", | |
2558 | "dead-grave", | |
2559 | "dead-tilde", | |
2560 | "dead-diaeresis", | |
2561 | "dead-macron", | |
2562 | "dead-degree", | |
2563 | "dead-acute", | |
2564 | "dead-cedilla", | |
2565 | "dead-breve", | |
2566 | "dead-ogonek", | |
2567 | "dead-caron", | |
2568 | "dead-doubleacute", | |
2569 | "dead-abovedot", | |
2570 | }; | |
2571 | ||
284f4730 JB |
2572 | /* You'll notice that this table is arranged to be conveniently |
2573 | indexed by X Windows keysym values. */ | |
2574 | static char *lispy_function_keys[] = | |
2575 | { | |
2576 | /* X Keysym value */ | |
2577 | ||
80e4aa30 | 2578 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2579 | "backspace", |
2580 | "tab", | |
2581 | "linefeed", | |
2582 | "clear", | |
2583 | 0, | |
2584 | "return", | |
2585 | 0, 0, | |
2586 | 0, 0, 0, /* 0xff10 */ | |
2587 | "pause", | |
2588 | 0, 0, 0, 0, 0, 0, 0, | |
2589 | "escape", | |
2590 | 0, 0, 0, 0, | |
2591 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2592 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2593 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2594 | ||
284f4730 JB |
2595 | "home", /* 0xff50 */ /* IsCursorKey */ |
2596 | "left", | |
2597 | "up", | |
2598 | "right", | |
2599 | "down", | |
2600 | "prior", | |
2601 | "next", | |
2602 | "end", | |
2603 | "begin", | |
2604 | 0, /* 0xff59 */ | |
2605 | 0, 0, 0, 0, 0, 0, | |
2606 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2607 | "print", | |
2608 | "execute", | |
2609 | "insert", | |
2610 | 0, /* 0xff64 */ | |
2611 | "undo", | |
2612 | "redo", | |
2613 | "menu", | |
2614 | "find", | |
2615 | "cancel", | |
2616 | "help", | |
2617 | "break", /* 0xff6b */ | |
2618 | ||
9fdbfdf8 | 2619 | 0, 0, 0, 0, 0, 0, 0, 0, "backtab", 0, |
284f4730 | 2620 | 0, /* 0xff76 */ |
36ae397e | 2621 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2622 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2623 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2624 | "kp-tab", /* 0xff89 */ | |
2625 | 0, 0, 0, | |
2626 | "kp-enter", /* 0xff8d */ | |
2627 | 0, 0, 0, | |
2628 | "kp-f1", /* 0xff91 */ | |
2629 | "kp-f2", | |
2630 | "kp-f3", | |
2631 | "kp-f4", | |
872157e7 RS |
2632 | "kp-home", /* 0xff95 */ |
2633 | "kp-left", | |
2634 | "kp-up", | |
2635 | "kp-right", | |
2636 | "kp-down", | |
2637 | "kp-prior", /* kp-page-up */ | |
2638 | "kp-next", /* kp-page-down */ | |
2639 | "kp-end", | |
2640 | "kp-begin", | |
2641 | "kp-insert", | |
2642 | "kp-delete", | |
2643 | 0, /* 0xffa0 */ | |
2644 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
284f4730 JB |
2645 | "kp-multiply", /* 0xffaa */ |
2646 | "kp-add", | |
2647 | "kp-separator", | |
2648 | "kp-subtract", | |
2649 | "kp-decimal", | |
2650 | "kp-divide", /* 0xffaf */ | |
2651 | "kp-0", /* 0xffb0 */ | |
2652 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2653 | 0, /* 0xffba */ | |
2654 | 0, 0, | |
2655 | "kp-equal", /* 0xffbd */ | |
2656 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2657 | "f2", |
2658 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2659 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2660 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2661 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2662 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2663 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2664 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2665 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2666 | }; |
2667 | ||
2668 | static char *lispy_mouse_names[] = | |
2669 | { | |
2670 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2671 | }; | |
2672 | ||
3c370943 | 2673 | /* Scroll bar parts. */ |
4bb994d1 JB |
2674 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2675 | ||
3c370943 JB |
2676 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2677 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2678 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2679 | }; | |
2680 | ||
2681 | ||
7b4aedb9 | 2682 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2683 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2684 | |
2685 | The elements have the form | |
2686 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2687 | where REST is the cdr of a position as it would be reported in the event. | |
2688 | ||
2689 | The make_lispy_event function stores positions here to tell the | |
2690 | difference between click and drag events, and to store the starting | |
2691 | location to be included in drag events. */ | |
2692 | ||
2693 | static Lisp_Object button_down_location; | |
88cb0656 | 2694 | |
fbcd35bd JB |
2695 | /* Information about the most recent up-going button event: Which |
2696 | button, what location, and what time. */ | |
2697 | ||
559f9d04 RS |
2698 | static int last_mouse_button; |
2699 | static int last_mouse_x; | |
2700 | static int last_mouse_y; | |
2701 | static unsigned long button_down_time; | |
fbcd35bd | 2702 | |
564dc952 JB |
2703 | /* The maximum time between clicks to make a double-click, |
2704 | or Qnil to disable double-click detection, | |
2705 | or Qt for no time limit. */ | |
2706 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2707 | |
2708 | /* The number of clicks in this multiple-click. */ | |
2709 | ||
2710 | int double_click_count; | |
2711 | ||
bb936752 FP |
2712 | #ifdef USE_X_TOOLKIT |
2713 | extern Lisp_Object map_event_to_object (); | |
2714 | #endif /* USE_X_TOOLKIT */ | |
2715 | ||
284f4730 JB |
2716 | /* Given a struct input_event, build the lisp event which represents |
2717 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2718 | movement buffer, which should have a movement event in it. |
2719 | ||
2720 | Note that events must be passed to this function in the order they | |
2721 | are received; this function stores the location of button presses | |
2722 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2723 | |
2724 | static Lisp_Object | |
2725 | make_lispy_event (event) | |
2726 | struct input_event *event; | |
2727 | { | |
79a7046c RS |
2728 | int i; |
2729 | ||
0220c518 | 2730 | switch (SWITCH_ENUM_CAST (event->kind)) |
284f4730 | 2731 | { |
284f4730 JB |
2732 | /* A simple keystroke. */ |
2733 | case ascii_keystroke: | |
86e5706b | 2734 | { |
9343ab07 | 2735 | Lisp_Object lispy_c; |
e9bf89a0 | 2736 | int c = event->code & 0377; |
5a1c6df8 JB |
2737 | /* Turn ASCII characters into control characters |
2738 | when proper. */ | |
2739 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2740 | c = make_ctrl_char (c); |
2741 | ||
2742 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2743 | just above, and the shift key was taken care of by the X code, | |
2744 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2745 | c |= (event->modifiers |
2746 | & (meta_modifier | alt_modifier | |
2747 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2748 | button_down_time = 0; |
bb9e9bed | 2749 | XSETFASTINT (lispy_c, c); |
9343ab07 | 2750 | return lispy_c; |
86e5706b | 2751 | } |
284f4730 JB |
2752 | |
2753 | /* A function key. The symbol may need to have modifier prefixes | |
2754 | tacked onto it. */ | |
2755 | case non_ascii_keystroke: | |
559f9d04 | 2756 | button_down_time = 0; |
e9bf89a0 RS |
2757 | |
2758 | for (i = 0; i < sizeof (lispy_accent_codes) / sizeof (int); i++) | |
2759 | if (event->code == lispy_accent_codes[i]) | |
2760 | return modify_event_symbol (i, | |
2761 | event->modifiers, | |
80e4aa30 | 2762 | Qfunction_key, Qnil, |
e9bf89a0 RS |
2763 | lispy_accent_keys, &accent_key_syms, |
2764 | (sizeof (lispy_accent_keys) | |
2765 | / sizeof (lispy_accent_keys[0]))); | |
2766 | ||
270a208f | 2767 | /* Handle system-specific keysyms. */ |
80e4aa30 RS |
2768 | if (event->code & (1 << 28)) |
2769 | { | |
2770 | /* We need to use an alist rather than a vector as the cache | |
2771 | since we can't make a vector long enuf. */ | |
270a208f RS |
2772 | if (NILP (system_key_syms)) |
2773 | system_key_syms = Fcons (Qnil, Qnil); | |
80e4aa30 RS |
2774 | return modify_event_symbol (event->code & 0xffffff, |
2775 | event->modifiers, | |
270a208f RS |
2776 | Qfunction_key, Vsystem_key_alist, |
2777 | 0, &system_key_syms, 0xffffff); | |
80e4aa30 RS |
2778 | } |
2779 | ||
e9bf89a0 RS |
2780 | return modify_event_symbol (event->code - 0xff00, |
2781 | event->modifiers, | |
80e4aa30 | 2782 | Qfunction_key, Qnil, |
284f4730 JB |
2783 | lispy_function_keys, &func_key_syms, |
2784 | (sizeof (lispy_function_keys) | |
2785 | / sizeof (lispy_function_keys[0]))); | |
2786 | break; | |
2787 | ||
87485d6f | 2788 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
88cb0656 JB |
2789 | /* A mouse click. Figure out where it is, decide whether it's |
2790 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2791 | case mouse_click: |
3c370943 | 2792 | case scroll_bar_click: |
284f4730 | 2793 | { |
e9bf89a0 | 2794 | int button = event->code; |
559f9d04 | 2795 | int is_double; |
7b4aedb9 | 2796 | Lisp_Object position; |
dbc4e1c1 JB |
2797 | Lisp_Object *start_pos_ptr; |
2798 | Lisp_Object start_pos; | |
284f4730 | 2799 | |
7b4aedb9 | 2800 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2801 | abort (); |
2802 | ||
7b4aedb9 JB |
2803 | /* Build the position as appropriate for this mouse click. */ |
2804 | if (event->kind == mouse_click) | |
284f4730 | 2805 | { |
7b4aedb9 | 2806 | int part; |
598a9fa7 | 2807 | FRAME_PTR f = XFRAME (event->frame_or_window); |
0aafc975 | 2808 | Lisp_Object window; |
7b4aedb9 | 2809 | Lisp_Object posn; |
9e20143a RS |
2810 | int row, column; |
2811 | ||
5da3133a RS |
2812 | /* Ignore mouse events that were made on frame that |
2813 | have been deleted. */ | |
2814 | if (! FRAME_LIVE_P (f)) | |
2815 | return Qnil; | |
2816 | ||
9e20143a | 2817 | pixel_to_glyph_coords (f, XINT (event->x), XINT (event->y), |
eef045bf | 2818 | &column, &row, 0, 1); |
7b4aedb9 | 2819 | |
eef045bf RS |
2820 | #ifndef USE_X_TOOLKIT |
2821 | /* In the non-toolkit version, clicks on the menu bar | |
2822 | are ordinary button events in the event buffer. | |
2823 | Distinguish them, and invoke the menu. | |
2824 | ||
2825 | (In the toolkit version, the toolkit handles the menu bar | |
2826 | and Emacs doesn't know about it until after the user | |
2827 | makes a selection.) */ | |
2828 | if (row >= 0 && row < FRAME_MENU_BAR_LINES (f)) | |
bb936752 | 2829 | { |
b7c49376 | 2830 | Lisp_Object items, item; |
0a0e8fe6 RS |
2831 | int hpos; |
2832 | int i; | |
2833 | ||
2834 | /* Activate the menu bar on the down event. If the | |
2835 | up event comes in before the menu code can deal with it, | |
2836 | just ignore it. */ | |
2837 | if (! (event->modifiers & down_modifier)) | |
2838 | return Qnil; | |
0aafc975 | 2839 | |
f2ae6b3f | 2840 | item = Qnil; |
5ec75a55 | 2841 | items = FRAME_MENU_BAR_ITEMS (f); |
b7c49376 | 2842 | for (i = 0; i < XVECTOR (items)->size; i += 3) |
5ec75a55 RS |
2843 | { |
2844 | Lisp_Object pos, string; | |
b7c49376 RS |
2845 | string = XVECTOR (items)->contents[i + 1]; |
2846 | pos = XVECTOR (items)->contents[i + 2]; | |
2847 | if (NILP (string)) | |
2848 | break; | |
9e20143a RS |
2849 | if (column >= XINT (pos) |
2850 | && column < XINT (pos) + XSTRING (string)->size) | |
b7c49376 RS |
2851 | { |
2852 | item = XVECTOR (items)->contents[i]; | |
2853 | break; | |
2854 | } | |
5ec75a55 | 2855 | } |
9e20143a | 2856 | |
5ec75a55 RS |
2857 | position |
2858 | = Fcons (event->frame_or_window, | |
2859 | Fcons (Qmenu_bar, | |
2860 | Fcons (Fcons (event->x, event->y), | |
2861 | Fcons (make_number (event->timestamp), | |
2862 | Qnil)))); | |
2863 | ||
b7c49376 | 2864 | return Fcons (item, Fcons (position, Qnil)); |
5ec75a55 | 2865 | } |
eef045bf | 2866 | #endif /* not USE_X_TOOLKIT */ |
0aafc975 | 2867 | |
9e20143a | 2868 | window = window_from_coordinates (f, column, row, &part); |
0aafc975 | 2869 | |
8c18cbfb | 2870 | if (!WINDOWP (window)) |
78ced549 RS |
2871 | { |
2872 | window = event->frame_or_window; | |
2873 | posn = Qnil; | |
2874 | } | |
284f4730 | 2875 | else |
7b4aedb9 | 2876 | { |
9e20143a RS |
2877 | int pixcolumn, pixrow; |
2878 | column -= XINT (XWINDOW (window)->left); | |
2879 | row -= XINT (XWINDOW (window)->top); | |
2880 | glyph_to_pixel_coords (f, column, row, &pixcolumn, &pixrow); | |
2881 | XSETINT (event->x, pixcolumn); | |
2882 | XSETINT (event->y, pixrow); | |
dbc4e1c1 | 2883 | |
7b4aedb9 JB |
2884 | if (part == 1) |
2885 | posn = Qmode_line; | |
2886 | else if (part == 2) | |
2887 | posn = Qvertical_line; | |
2888 | else | |
18cd2eeb KH |
2889 | XSETINT (posn, |
2890 | buffer_posn_from_coords (XWINDOW (window), | |
2891 | column, row)); | |
7b4aedb9 JB |
2892 | } |
2893 | ||
5ec75a55 RS |
2894 | position |
2895 | = Fcons (window, | |
2896 | Fcons (posn, | |
2897 | Fcons (Fcons (event->x, event->y), | |
2898 | Fcons (make_number (event->timestamp), | |
2899 | Qnil)))); | |
284f4730 | 2900 | } |
7b4aedb9 | 2901 | else |
88cb0656 | 2902 | { |
9e20143a RS |
2903 | Lisp_Object window; |
2904 | Lisp_Object portion_whole; | |
2905 | Lisp_Object part; | |
2906 | ||
2907 | window = event->frame_or_window; | |
2908 | portion_whole = Fcons (event->x, event->y); | |
2909 | part = *scroll_bar_parts[(int) event->part]; | |
7b4aedb9 JB |
2910 | |
2911 | position = | |
2912 | Fcons (window, | |
3c370943 | 2913 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2914 | Fcons (portion_whole, |
2915 | Fcons (make_number (event->timestamp), | |
9e20143a | 2916 | Fcons (part, Qnil))))); |
88cb0656 JB |
2917 | } |
2918 | ||
dbc4e1c1 JB |
2919 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2920 | ||
2921 | start_pos = *start_pos_ptr; | |
2922 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2923 | |
559f9d04 RS |
2924 | is_double = (button == last_mouse_button |
2925 | && XINT (event->x) == last_mouse_x | |
2926 | && XINT (event->y) == last_mouse_y | |
2927 | && button_down_time != 0 | |
2928 | && (EQ (Vdouble_click_time, Qt) | |
2929 | || (INTEGERP (Vdouble_click_time) | |
2930 | && ((int)(event->timestamp - button_down_time) | |
2931 | < XINT (Vdouble_click_time))))); | |
2932 | last_mouse_button = button; | |
2933 | last_mouse_x = XINT (event->x); | |
2934 | last_mouse_y = XINT (event->y); | |
2935 | ||
7b4aedb9 JB |
2936 | /* If this is a button press, squirrel away the location, so |
2937 | we can decide later whether it was a click or a drag. */ | |
2938 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2939 | { |
2940 | if (is_double) | |
2941 | { | |
2942 | double_click_count++; | |
2943 | event->modifiers |= ((double_click_count > 2) | |
2944 | ? triple_modifier | |
2945 | : double_modifier); | |
2946 | } | |
2947 | else | |
2948 | double_click_count = 1; | |
2949 | button_down_time = event->timestamp; | |
2950 | *start_pos_ptr = Fcopy_alist (position); | |
2951 | } | |
7b4aedb9 | 2952 | |
88cb0656 | 2953 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2954 | see if this was a click or a drag. */ |
88cb0656 JB |
2955 | else if (event->modifiers & up_modifier) |
2956 | { | |
48e416d4 RS |
2957 | /* If we did not see a down before this up, |
2958 | ignore the up. Probably this happened because | |
2959 | the down event chose a menu item. | |
2960 | It would be an annoyance to treat the release | |
2961 | of the button that chose the menu item | |
2962 | as a separate event. */ | |
2963 | ||
8c18cbfb | 2964 | if (!CONSP (start_pos)) |
48e416d4 RS |
2965 | return Qnil; |
2966 | ||
88cb0656 | 2967 | event->modifiers &= ~up_modifier; |
48e416d4 | 2968 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
8c18cbfb | 2969 | if (!CONSP (start_pos)) |
dbc4e1c1 JB |
2970 | event->modifiers |= click_modifier; |
2971 | else | |
48e416d4 | 2972 | #endif |
dbc4e1c1 JB |
2973 | { |
2974 | /* The third element of every position should be the (x,y) | |
2975 | pair. */ | |
9b8eb840 | 2976 | Lisp_Object down; |
dbc4e1c1 | 2977 | |
9b8eb840 | 2978 | down = Fnth (make_number (2), start_pos); |
fbcd35bd JB |
2979 | if (EQ (event->x, XCONS (down)->car) |
2980 | && EQ (event->y, XCONS (down)->cdr)) | |
2981 | { | |
bc536d84 | 2982 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2983 | } |
2984 | else | |
2985 | { | |
559f9d04 | 2986 | button_down_time = 0; |
fbcd35bd JB |
2987 | event->modifiers |= drag_modifier; |
2988 | } | |
bc536d84 RS |
2989 | /* Don't check is_double; treat this as multiple |
2990 | if the down-event was multiple. */ | |
2991 | if (double_click_count > 1) | |
2992 | event->modifiers |= ((double_click_count > 2) | |
2993 | ? triple_modifier | |
2994 | : double_modifier); | |
dbc4e1c1 | 2995 | } |
88cb0656 JB |
2996 | } |
2997 | else | |
2998 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2999 | the up_modifier set. */ |
88cb0656 JB |
3000 | abort (); |
3001 | ||
88cb0656 | 3002 | { |
7b4aedb9 | 3003 | /* Get the symbol we should use for the mouse click. */ |
9b8eb840 KH |
3004 | Lisp_Object head; |
3005 | ||
3006 | head = modify_event_symbol (button, | |
3007 | event->modifiers, | |
3008 | Qmouse_click, Qnil, | |
3009 | lispy_mouse_names, &mouse_syms, | |
3010 | (sizeof (lispy_mouse_names) | |
3011 | / sizeof (lispy_mouse_names[0]))); | |
88cb0656 | 3012 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
3013 | return Fcons (head, |
3014 | Fcons (start_pos, | |
3015 | Fcons (position, | |
3016 | Qnil))); | |
fbcd35bd JB |
3017 | else if (event->modifiers & (double_modifier | triple_modifier)) |
3018 | return Fcons (head, | |
3019 | Fcons (position, | |
3020 | Fcons (make_number (double_click_count), | |
3021 | Qnil))); | |
88cb0656 JB |
3022 | else |
3023 | return Fcons (head, | |
7b4aedb9 | 3024 | Fcons (position, |
88cb0656 JB |
3025 | Qnil)); |
3026 | } | |
284f4730 | 3027 | } |
5846638c | 3028 | #endif /* MULTI_FRAME or HAVE_MOUSE */ |
284f4730 | 3029 | |
284f4730 JB |
3030 | /* The 'kind' field of the event is something we don't recognize. */ |
3031 | default: | |
48e416d4 | 3032 | abort (); |
284f4730 JB |
3033 | } |
3034 | } | |
3035 | ||
87485d6f | 3036 | #if defined (MULTI_FRAME) || defined (HAVE_MOUSE) |
6cbff1cb | 3037 | |
284f4730 | 3038 | static Lisp_Object |
7b4aedb9 | 3039 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 3040 | FRAME_PTR frame; |
7b4aedb9 | 3041 | Lisp_Object bar_window; |
3c370943 | 3042 | enum scroll_bar_part part; |
284f4730 | 3043 | Lisp_Object x, y; |
e5d77022 | 3044 | unsigned long time; |
284f4730 | 3045 | { |
68553292 | 3046 | #ifdef MULTI_FRAME |
3c370943 | 3047 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 3048 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 3049 | { |
9b8eb840 | 3050 | Lisp_Object part_sym; |
4bb994d1 | 3051 | |
9b8eb840 | 3052 | part_sym = *scroll_bar_parts[(int) part]; |
3c370943 | 3053 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 3054 | (Fcons (Fcons (bar_window, |
3c370943 | 3055 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
3056 | Fcons (Fcons (x, y), |
3057 | Fcons (make_number (time), | |
cb5df6ae | 3058 | Fcons (part_sym, |
4bb994d1 JB |
3059 | Qnil))))), |
3060 | Qnil))); | |
3061 | } | |
3062 | ||
3063 | /* Or is it an ordinary mouse movement? */ | |
284f4730 | 3064 | else |
68553292 | 3065 | #endif /* MULTI_FRAME */ |
284f4730 | 3066 | { |
4bb994d1 | 3067 | int area; |
9e20143a | 3068 | Lisp_Object window; |
4bb994d1 | 3069 | Lisp_Object posn; |
9e20143a RS |
3070 | int column, row; |
3071 | ||
68553292 | 3072 | #ifdef MULTI_FRAME |
9e20143a | 3073 | if (frame) |
68553292 RS |
3074 | #else |
3075 | if (1) | |
3076 | #endif | |
047688cb RS |
3077 | { |
3078 | /* It's in a frame; which window on that frame? */ | |
3079 | pixel_to_glyph_coords (frame, XINT (x), XINT (y), &column, &row, 0, 1); | |
3080 | window = window_from_coordinates (frame, column, row, &area); | |
3081 | } | |
9e20143a RS |
3082 | else |
3083 | window = Qnil; | |
4bb994d1 | 3084 | |
8c18cbfb | 3085 | if (WINDOWP (window)) |
4bb994d1 | 3086 | { |
9e20143a RS |
3087 | int pixcolumn, pixrow; |
3088 | column -= XINT (XWINDOW (window)->left); | |
3089 | row -= XINT (XWINDOW (window)->top); | |
3090 | glyph_to_pixel_coords (frame, column, row, &pixcolumn, &pixrow); | |
3091 | XSETINT (x, pixcolumn); | |
3092 | XSETINT (y, pixrow); | |
4bb994d1 JB |
3093 | |
3094 | if (area == 1) | |
3095 | posn = Qmode_line; | |
3096 | else if (area == 2) | |
3097 | posn = Qvertical_line; | |
3098 | else | |
18cd2eeb KH |
3099 | XSETINT (posn, |
3100 | buffer_posn_from_coords (XWINDOW (window), column, row)); | |
4bb994d1 | 3101 | } |
68553292 | 3102 | #ifdef MULTI_FRAME |
e9bf89a0 RS |
3103 | else if (frame != 0) |
3104 | { | |
18cd2eeb | 3105 | XSETFRAME (window, frame); |
e9bf89a0 RS |
3106 | posn = Qnil; |
3107 | } | |
68553292 | 3108 | #endif |
284f4730 | 3109 | else |
4bb994d1 JB |
3110 | { |
3111 | window = Qnil; | |
3112 | posn = Qnil; | |
bb9e9bed KH |
3113 | XSETFASTINT (x, 0); |
3114 | XSETFASTINT (y, 0); | |
4bb994d1 | 3115 | } |
284f4730 | 3116 | |
4bb994d1 JB |
3117 | return Fcons (Qmouse_movement, |
3118 | Fcons (Fcons (window, | |
3119 | Fcons (posn, | |
3120 | Fcons (Fcons (x, y), | |
3121 | Fcons (make_number (time), | |
3122 | Qnil)))), | |
3123 | Qnil)); | |
3124 | } | |
284f4730 JB |
3125 | } |
3126 | ||
68553292 | 3127 | #endif /* neither MULTI_FRAME nor HAVE_MOUSE */ |
6cbff1cb | 3128 | |
cd21b839 JB |
3129 | /* Construct a switch frame event. */ |
3130 | static Lisp_Object | |
3131 | make_lispy_switch_frame (frame) | |
3132 | Lisp_Object frame; | |
3133 | { | |
3134 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
3135 | } | |
0a7f1fc0 JB |
3136 | \f |
3137 | /* Manipulating modifiers. */ | |
284f4730 | 3138 | |
0a7f1fc0 | 3139 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 3140 | |
0a7f1fc0 JB |
3141 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
3142 | SYMBOL's name of the end of the modifiers; the string from this | |
3143 | position is the unmodified symbol name. | |
284f4730 | 3144 | |
0a7f1fc0 JB |
3145 | This doesn't use any caches. */ |
3146 | static int | |
3147 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 3148 | Lisp_Object symbol; |
0a7f1fc0 | 3149 | int *modifier_end; |
284f4730 JB |
3150 | { |
3151 | struct Lisp_String *name; | |
3152 | int i; | |
3153 | int modifiers; | |
284f4730 JB |
3154 | |
3155 | CHECK_SYMBOL (symbol, 1); | |
3156 | ||
3157 | modifiers = 0; | |
3158 | name = XSYMBOL (symbol)->name; | |
3159 | ||
284f4730 | 3160 | |
0a7f1fc0 | 3161 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
3162 | switch (name->data[i]) |
3163 | { | |
0a7f1fc0 JB |
3164 | #define SINGLE_LETTER_MOD(bit) \ |
3165 | if (name->data[i+1] != '-') \ | |
3166 | goto no_more_modifiers; \ | |
3167 | modifiers |= bit; \ | |
fce33686 | 3168 | i += 2; |
0a7f1fc0 JB |
3169 | |
3170 | case 'A': | |
3171 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
3172 | break; |
3173 | ||
3174 | case 'C': | |
0a7f1fc0 | 3175 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
3176 | break; |
3177 | ||
3178 | case 'H': | |
0a7f1fc0 | 3179 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
3180 | break; |
3181 | ||
3182 | case 'M': | |
0a7f1fc0 | 3183 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
3184 | break; |
3185 | ||
3186 | case 'S': | |
0a7f1fc0 | 3187 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
3188 | break; |
3189 | ||
3190 | case 's': | |
86e5706b | 3191 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
3192 | break; |
3193 | ||
fce33686 JB |
3194 | case 'd': |
3195 | if (i + 5 > name->size) | |
3196 | goto no_more_modifiers; | |
3197 | if (! strncmp (name->data + i, "drag-", 5)) | |
3198 | { | |
fce33686 JB |
3199 | modifiers |= drag_modifier; |
3200 | i += 5; | |
3201 | } | |
3202 | else if (! strncmp (name->data + i, "down-", 5)) | |
3203 | { | |
fce33686 JB |
3204 | modifiers |= down_modifier; |
3205 | i += 5; | |
3206 | } | |
fbcd35bd JB |
3207 | else if (i + 7 <= name->size |
3208 | && ! strncmp (name->data + i, "double-", 7)) | |
3209 | { | |
3210 | modifiers |= double_modifier; | |
3211 | i += 7; | |
3212 | } | |
3213 | else | |
3214 | goto no_more_modifiers; | |
3215 | break; | |
3216 | ||
3217 | case 't': | |
3218 | if (i + 7 > name->size) | |
3219 | goto no_more_modifiers; | |
3220 | if (! strncmp (name->data + i, "triple-", 7)) | |
3221 | { | |
3222 | modifiers |= triple_modifier; | |
3223 | i += 7; | |
3224 | } | |
fce33686 JB |
3225 | else |
3226 | goto no_more_modifiers; | |
284f4730 JB |
3227 | break; |
3228 | ||
3229 | default: | |
3230 | goto no_more_modifiers; | |
0a7f1fc0 JB |
3231 | |
3232 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
3233 | } |
3234 | no_more_modifiers: | |
3235 | ||
0a7f1fc0 | 3236 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
3237 | if (! (modifiers & (down_modifier | drag_modifier |
3238 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 3239 | && i + 7 == name->size |
4bb994d1 | 3240 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 3241 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
3242 | modifiers |= click_modifier; |
3243 | ||
3244 | if (modifier_end) | |
3245 | *modifier_end = i; | |
3246 | ||
3247 | return modifiers; | |
3248 | } | |
3249 | ||
3250 | ||
3251 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
3252 | prepended to the string BASE[0..BASE_LEN-1]. | |
3253 | This doesn't use any caches. */ | |
3254 | static Lisp_Object | |
3255 | apply_modifiers_uncached (modifiers, base, base_len) | |
3256 | int modifiers; | |
3257 | char *base; | |
3258 | int base_len; | |
3259 | { | |
3260 | /* Since BASE could contain nulls, we can't use intern here; we have | |
3261 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
3262 | reference to it. */ | |
3263 | char *new_mods = | |
fbcd35bd | 3264 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 3265 | int mod_len; |
284f4730 | 3266 | |
284f4730 | 3267 | { |
0a7f1fc0 JB |
3268 | char *p = new_mods; |
3269 | ||
3270 | /* Only the event queue may use the `up' modifier; it should always | |
3271 | be turned into a click or drag event before presented to lisp code. */ | |
3272 | if (modifiers & up_modifier) | |
3273 | abort (); | |
3274 | ||
3275 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
3276 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
3277 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
3278 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
3279 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 3280 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
3281 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
3282 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
3283 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
3284 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
3285 | /* The click modifier is denoted by the absence of other modifiers. */ |
3286 | ||
3287 | *p = '\0'; | |
3288 | ||
3289 | mod_len = p - new_mods; | |
3290 | } | |
284f4730 | 3291 | |
0a7f1fc0 | 3292 | { |
9b8eb840 | 3293 | Lisp_Object new_name; |
0a7f1fc0 | 3294 | |
9b8eb840 | 3295 | new_name = make_uninit_string (mod_len + base_len); |
0a7f1fc0 JB |
3296 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); |
3297 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
3298 | |
3299 | return Fintern (new_name, Qnil); | |
3300 | } | |
3301 | } | |
3302 | ||
3303 | ||
0a7f1fc0 JB |
3304 | static char *modifier_names[] = |
3305 | { | |
fbcd35bd | 3306 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 3307 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 3308 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 3309 | }; |
80645119 | 3310 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
3311 | |
3312 | static Lisp_Object modifier_symbols; | |
3313 | ||
3314 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
3315 | static Lisp_Object | |
3316 | lispy_modifier_list (modifiers) | |
3317 | int modifiers; | |
3318 | { | |
3319 | Lisp_Object modifier_list; | |
3320 | int i; | |
3321 | ||
3322 | modifier_list = Qnil; | |
80645119 | 3323 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 3324 | if (modifiers & (1<<i)) |
80645119 JB |
3325 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
3326 | modifier_list); | |
0a7f1fc0 JB |
3327 | |
3328 | return modifier_list; | |
3329 | } | |
3330 | ||
3331 | ||
3332 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
3333 | where UNMODIFIED is the unmodified form of SYMBOL, | |
3334 | MASK is the set of modifiers present in SYMBOL's name. | |
3335 | This is similar to parse_modifiers_uncached, but uses the cache in | |
3336 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
3337 | Qevent_symbol_elements property. */ | |
3338 | static Lisp_Object | |
3339 | parse_modifiers (symbol) | |
3340 | Lisp_Object symbol; | |
3341 | { | |
9b8eb840 | 3342 | Lisp_Object elements; |
0a7f1fc0 | 3343 | |
9b8eb840 | 3344 | elements = Fget (symbol, Qevent_symbol_element_mask); |
0a7f1fc0 JB |
3345 | if (CONSP (elements)) |
3346 | return elements; | |
3347 | else | |
3348 | { | |
3349 | int end; | |
3350 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
9b8eb840 | 3351 | Lisp_Object unmodified; |
0a7f1fc0 JB |
3352 | Lisp_Object mask; |
3353 | ||
9b8eb840 KH |
3354 | unmodified = Fintern (make_string (XSYMBOL (symbol)->name->data + end, |
3355 | XSYMBOL (symbol)->name->size - end), | |
3356 | Qnil); | |
3357 | ||
734fef94 JB |
3358 | if (modifiers & ~((1<<VALBITS) - 1)) |
3359 | abort (); | |
bb9e9bed | 3360 | XSETFASTINT (mask, modifiers); |
0a7f1fc0 JB |
3361 | elements = Fcons (unmodified, Fcons (mask, Qnil)); |
3362 | ||
3363 | /* Cache the parsing results on SYMBOL. */ | |
3364 | Fput (symbol, Qevent_symbol_element_mask, | |
3365 | elements); | |
3366 | Fput (symbol, Qevent_symbol_elements, | |
3367 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
3368 | ||
3369 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
3370 | it would be nice to put that in unmodified's cache. | |
3371 | But we can't, since we're not sure that parse_modifiers is | |
3372 | canonical. */ | |
3373 | ||
3374 | return elements; | |
3375 | } | |
3376 | } | |
3377 | ||
3378 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
3379 | BASE must be unmodified. | |
3380 | ||
3381 | This is like apply_modifiers_uncached, but uses BASE's | |
3382 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
3383 | Qevent_symbol_elements properties, since it has that info anyway. |
3384 | ||
3385 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
3386 | the modified symbol. */ | |
0a7f1fc0 JB |
3387 | static Lisp_Object |
3388 | apply_modifiers (modifiers, base) | |
3389 | int modifiers; | |
3390 | Lisp_Object base; | |
3391 | { | |
7b4aedb9 | 3392 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 3393 | |
80645119 JB |
3394 | /* Mask out upper bits. We don't know where this value's been. */ |
3395 | modifiers &= (1<<VALBITS) - 1; | |
3396 | ||
0a7f1fc0 | 3397 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 3398 | cache = Fget (base, Qmodifier_cache); |
bb9e9bed | 3399 | XSETFASTINT (index, (modifiers & ~click_modifier)); |
697e4895 | 3400 | entry = assq_no_quit (index, cache); |
0a7f1fc0 JB |
3401 | |
3402 | if (CONSP (entry)) | |
7b4aedb9 JB |
3403 | new_symbol = XCONS (entry)->cdr; |
3404 | else | |
3405 | { | |
3406 | /* We have to create the symbol ourselves. */ | |
3407 | new_symbol = apply_modifiers_uncached (modifiers, | |
3408 | XSYMBOL (base)->name->data, | |
3409 | XSYMBOL (base)->name->size); | |
3410 | ||
3411 | /* Add the new symbol to the base's cache. */ | |
3412 | entry = Fcons (index, new_symbol); | |
3413 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
3414 | ||
3415 | /* We have the parsing info now for free, so add it to the caches. */ | |
bb9e9bed | 3416 | XSETFASTINT (index, modifiers); |
7b4aedb9 JB |
3417 | Fput (new_symbol, Qevent_symbol_element_mask, |
3418 | Fcons (base, Fcons (index, Qnil))); | |
3419 | Fput (new_symbol, Qevent_symbol_elements, | |
3420 | Fcons (base, lispy_modifier_list (modifiers))); | |
3421 | } | |
0a7f1fc0 | 3422 | |
7b4aedb9 JB |
3423 | /* Make sure this symbol is of the same kind as BASE. |
3424 | ||
3425 | You'd think we could just set this once and for all when we | |
3426 | intern the symbol above, but reorder_modifiers may call us when | |
3427 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
3428 | because it has a Qmodifier_cache property it must have its |
3429 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
3430 | if (NILP (Fget (new_symbol, Qevent_kind))) |
3431 | { | |
9b8eb840 | 3432 | Lisp_Object kind; |
7b4aedb9 | 3433 | |
9b8eb840 | 3434 | kind = Fget (base, Qevent_kind); |
7b4aedb9 JB |
3435 | if (! NILP (kind)) |
3436 | Fput (new_symbol, Qevent_kind, kind); | |
3437 | } | |
3438 | ||
3439 | return new_symbol; | |
0a7f1fc0 JB |
3440 | } |
3441 | ||
3442 | ||
3443 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
3444 | return a symbol with the modifiers placed in the canonical order. | |
3445 | Canonical order is alphabetical, except for down and drag, which | |
3446 | always come last. The 'click' modifier is never written out. | |
3447 | ||
3448 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
3449 | and M-C-foo end up being equivalent in the keymap. */ | |
3450 | ||
3451 | Lisp_Object | |
3452 | reorder_modifiers (symbol) | |
3453 | Lisp_Object symbol; | |
3454 | { | |
3455 | /* It's hopefully okay to write the code this way, since everything | |
3456 | will soon be in caches, and no consing will be done at all. */ | |
9b8eb840 | 3457 | Lisp_Object parsed; |
0a7f1fc0 | 3458 | |
9b8eb840 | 3459 | parsed = parse_modifiers (symbol); |
0a7f1fc0 JB |
3460 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, |
3461 | XCONS (parsed)->car); | |
3462 | } | |
3463 | ||
3464 | ||
284f4730 JB |
3465 | /* For handling events, we often want to produce a symbol whose name |
3466 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
3467 | to some base, like the name of a function key or mouse button. | |
3468 | modify_event_symbol produces symbols of this sort. | |
3469 | ||
3470 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
3471 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
3472 | in the table. | |
3473 | ||
80e4aa30 RS |
3474 | Alternatively, NAME_ALIST is an alist mapping codes into symbol names. |
3475 | NAME_ALIST is used if it is non-nil; otherwise NAME_TABLE is used. | |
3476 | ||
284f4730 JB |
3477 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will |
3478 | persist between calls to modify_event_symbol that it can use to | |
3479 | store a cache of the symbols it's generated for this NAME_TABLE | |
80e4aa30 | 3480 | before. The object stored there may be a vector or an alist. |
284f4730 JB |
3481 | |
3482 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
3483 | ||
3484 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
3485 | whose prefixes should be applied to the symbol name. | |
3486 | ||
3487 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
3488 | the returned symbol. |
3489 | ||
3490 | The symbols we create are supposed to have an | |
eb8c3be9 | 3491 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
3492 | in the symbol's name. */ |
3493 | ||
284f4730 | 3494 | static Lisp_Object |
80e4aa30 RS |
3495 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_alist, |
3496 | name_table, symbol_table, table_size) | |
284f4730 JB |
3497 | int symbol_num; |
3498 | unsigned modifiers; | |
3499 | Lisp_Object symbol_kind; | |
80e4aa30 | 3500 | Lisp_Object name_alist; |
284f4730 JB |
3501 | char **name_table; |
3502 | Lisp_Object *symbol_table; | |
3503 | int table_size; | |
3504 | { | |
80e4aa30 RS |
3505 | Lisp_Object value; |
3506 | Lisp_Object symbol_int; | |
3507 | ||
18cd2eeb | 3508 | XSETINT (symbol_int, symbol_num); |
284f4730 JB |
3509 | |
3510 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 3511 | if (symbol_num < 0 || symbol_num >= table_size) |
0c2611c5 | 3512 | return Qnil; |
284f4730 | 3513 | |
80e4aa30 RS |
3514 | if (CONSP (*symbol_table)) |
3515 | value = Fcdr (assq_no_quit (symbol_int, *symbol_table)); | |
3516 | ||
0a7f1fc0 | 3517 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 3518 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
3519 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
3520 | we've never used that symbol before. */ | |
80e4aa30 | 3521 | else |
88cb0656 | 3522 | { |
80e4aa30 RS |
3523 | if (! VECTORP (*symbol_table) |
3524 | || XVECTOR (*symbol_table)->size != table_size) | |
3525 | { | |
3526 | Lisp_Object size; | |
0a7f1fc0 | 3527 | |
bb9e9bed | 3528 | XSETFASTINT (size, table_size); |
80e4aa30 RS |
3529 | *symbol_table = Fmake_vector (size, Qnil); |
3530 | } | |
284f4730 | 3531 | |
80e4aa30 RS |
3532 | value = XVECTOR (*symbol_table)->contents[symbol_num]; |
3533 | } | |
284f4730 | 3534 | |
0a7f1fc0 | 3535 | /* Have we already used this symbol before? */ |
80e4aa30 | 3536 | if (NILP (value)) |
284f4730 | 3537 | { |
0a7f1fc0 | 3538 | /* No; let's create it. */ |
80e4aa30 | 3539 | if (!NILP (name_alist)) |
b64b4075 | 3540 | value = Fcdr_safe (Fassq (symbol_int, name_alist)); |
80e4aa30 RS |
3541 | else if (name_table[symbol_num]) |
3542 | value = intern (name_table[symbol_num]); | |
b64b4075 RS |
3543 | |
3544 | if (NILP (value)) | |
d1f50460 RS |
3545 | { |
3546 | char buf[20]; | |
3547 | sprintf (buf, "key-%d", symbol_num); | |
80e4aa30 | 3548 | value = intern (buf); |
d1f50460 | 3549 | } |
0a7f1fc0 | 3550 | |
80e4aa30 RS |
3551 | if (CONSP (*symbol_table)) |
3552 | *symbol_table = Fcons (value, *symbol_table); | |
3553 | else | |
3554 | XVECTOR (*symbol_table)->contents[symbol_num] = value; | |
3555 | ||
0a7f1fc0 JB |
3556 | /* Fill in the cache entries for this symbol; this also |
3557 | builds the Qevent_symbol_elements property, which the user | |
3558 | cares about. */ | |
80e4aa30 RS |
3559 | apply_modifiers (modifiers & click_modifier, value); |
3560 | Fput (value, Qevent_kind, symbol_kind); | |
284f4730 | 3561 | } |
88cb0656 | 3562 | |
0a7f1fc0 | 3563 | /* Apply modifiers to that symbol. */ |
80e4aa30 | 3564 | return apply_modifiers (modifiers, value); |
284f4730 | 3565 | } |
0a7f1fc0 | 3566 | |
284f4730 | 3567 | \f |
284f4730 JB |
3568 | /* Store into *addr a value nonzero if terminal input chars are available. |
3569 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
3570 | but works even if FIONREAD does not exist. | |
3571 | (In fact, this may actually read some input.) */ | |
3572 | ||
3573 | static void | |
3574 | get_input_pending (addr) | |
3575 | int *addr; | |
3576 | { | |
3577 | /* First of all, have we already counted some input? */ | |
3578 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3579 | ||
3580 | /* If input is being read as it arrives, and we have none, there is none. */ | |
3581 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
3582 | return; | |
3583 | ||
3584 | /* Try to read some input and see how much we get. */ | |
3585 | gobble_input (0); | |
3586 | *addr = !NILP (Vquit_flag) || readable_events (); | |
3587 | } | |
3588 | ||
81931ba1 | 3589 | /* Interface to read_avail_input, blocking SIGIO or SIGALRM if necessary. */ |
284f4730 JB |
3590 | |
3591 | int | |
3592 | gobble_input (expected) | |
3593 | int expected; | |
3594 | { | |
3595 | #ifndef VMS | |
3596 | #ifdef SIGIO | |
3597 | if (interrupt_input) | |
3598 | { | |
32676c08 | 3599 | SIGMASKTYPE mask; |
e065a56e | 3600 | mask = sigblockx (SIGIO); |
284f4730 | 3601 | read_avail_input (expected); |
e065a56e | 3602 | sigsetmask (mask); |
284f4730 JB |
3603 | } |
3604 | else | |
81931ba1 RS |
3605 | #ifdef POLL_FOR_INPUT |
3606 | if (read_socket_hook && !interrupt_input && poll_suppress_count == 0) | |
3607 | { | |
3608 | SIGMASKTYPE mask; | |
3609 | mask = sigblockx (SIGALRM); | |
3610 | read_avail_input (expected); | |
3611 | sigsetmask (mask); | |
3612 | } | |
3613 | else | |
87485d6f | 3614 | #endif |
284f4730 JB |
3615 | #endif |
3616 | read_avail_input (expected); | |
3617 | #endif | |
3618 | } | |
a8015ab5 | 3619 | |
241ceaf7 RS |
3620 | /* Put a buffer_switch_event in the buffer |
3621 | so that read_key_sequence will notice the new current buffer. */ | |
3622 | ||
a8015ab5 KH |
3623 | record_asynch_buffer_change () |
3624 | { | |
3625 | struct input_event event; | |
a30f0615 RS |
3626 | Lisp_Object tem; |
3627 | ||
a8015ab5 KH |
3628 | event.kind = buffer_switch_event; |
3629 | event.frame_or_window = Qnil; | |
241ceaf7 | 3630 | |
f65e6f7d | 3631 | #ifdef subprocesses |
a30f0615 RS |
3632 | /* We don't need a buffer-switch event unless Emacs is waiting for input. |
3633 | The purpose of the event is to make read_key_sequence look up the | |
3634 | keymaps again. If we aren't in read_key_sequence, we don't need one, | |
3635 | and the event could cause trouble by messing up (input-pending-p). */ | |
3636 | tem = Fwaiting_for_user_input_p (); | |
3637 | if (NILP (tem)) | |
3638 | return; | |
f65e6f7d RS |
3639 | #else |
3640 | /* We never need these events if we have no asynchronous subprocesses. */ | |
3641 | return; | |
3642 | #endif | |
a30f0615 | 3643 | |
241ceaf7 RS |
3644 | /* Make sure no interrupt happens while storing the event. */ |
3645 | #ifdef SIGIO | |
3646 | if (interrupt_input) | |
3647 | { | |
3648 | SIGMASKTYPE mask; | |
3649 | mask = sigblockx (SIGIO); | |
3650 | kbd_buffer_store_event (&event); | |
3651 | sigsetmask (mask); | |
3652 | } | |
3653 | else | |
3654 | #endif | |
3655 | { | |
3656 | stop_polling (); | |
3657 | kbd_buffer_store_event (&event); | |
3658 | start_polling (); | |
3659 | } | |
a8015ab5 | 3660 | } |
284f4730 JB |
3661 | \f |
3662 | #ifndef VMS | |
3663 | ||
3664 | /* Read any terminal input already buffered up by the system | |
3665 | into the kbd_buffer, but do not wait. | |
3666 | ||
3667 | EXPECTED should be nonzero if the caller knows there is some input. | |
3668 | ||
3669 | Except on VMS, all input is read by this function. | |
3670 | If interrupt_input is nonzero, this function MUST be called | |
3671 | only when SIGIO is blocked. | |
3672 | ||
3673 | Returns the number of keyboard chars read, or -1 meaning | |
3674 | this is a bad time to try to read input. */ | |
3675 | ||
3676 | static int | |
3677 | read_avail_input (expected) | |
3678 | int expected; | |
3679 | { | |
3680 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3681 | register int i; | |
3682 | int nread; | |
3683 | ||
3684 | if (read_socket_hook) | |
3685 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
437f6112 RS |
3686 | nread = (*read_socket_hook) (input_fd, buf, KBD_BUFFER_SIZE, |
3687 | expected, expected); | |
284f4730 JB |
3688 | else |
3689 | { | |
17270835 RS |
3690 | /* Using KBD_BUFFER_SIZE - 1 here avoids reading more than |
3691 | the kbd_buffer can really hold. That may prevent loss | |
3692 | of characters on some systems when input is stuffed at us. */ | |
3693 | unsigned char cbuf[KBD_BUFFER_SIZE - 1]; | |
58788063 | 3694 | int n_to_read; |
284f4730 | 3695 | |
58788063 | 3696 | /* Determine how many characters we should *try* to read. */ |
bc536d84 RS |
3697 | #ifdef WINDOWSNT |
3698 | return 0; | |
3699 | #else /* not WINDOWSNT */ | |
80e4aa30 | 3700 | #ifdef MSDOS |
58788063 RS |
3701 | n_to_read = dos_keysns (); |
3702 | if (n_to_read == 0) | |
3703 | return 0; | |
c3a2738c | 3704 | #else /* not MSDOS */ |
284f4730 JB |
3705 | #ifdef FIONREAD |
3706 | /* Find out how much input is available. */ | |
437f6112 | 3707 | if (ioctl (input_fd, FIONREAD, &n_to_read) < 0) |
284f4730 JB |
3708 | /* Formerly simply reported no input, but that sometimes led to |
3709 | a failure of Emacs to terminate. | |
3710 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3711 | /* ??? Is it really right to send the signal just to this process |
3712 | rather than to the whole process group? | |
3713 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 | 3714 | kill (getpid (), SIGHUP); |
58788063 | 3715 | if (n_to_read == 0) |
284f4730 | 3716 | return 0; |
58788063 RS |
3717 | if (n_to_read > sizeof cbuf) |
3718 | n_to_read = sizeof cbuf; | |
284f4730 | 3719 | #else /* no FIONREAD */ |
482952ef | 3720 | #if defined(USG) || defined(DGUX) |
284f4730 | 3721 | /* Read some input if available, but don't wait. */ |
58788063 | 3722 | n_to_read = sizeof cbuf; |
437f6112 | 3723 | fcntl (input_fd, F_SETFL, O_NDELAY); |
284f4730 JB |
3724 | #else |
3725 | you lose; | |
3726 | #endif | |
3727 | #endif | |
80e4aa30 | 3728 | #endif /* not MSDOS */ |
bc536d84 | 3729 | #endif /* not WINDOWSNT */ |
284f4730 | 3730 | |
58788063 RS |
3731 | /* Now read; for one reason or another, this will not block. |
3732 | NREAD is set to the number of chars read. */ | |
9134775b | 3733 | do |
284f4730 | 3734 | { |
80e4aa30 RS |
3735 | #ifdef MSDOS |
3736 | cbuf[0] = dos_keyread(); | |
3737 | nread = 1; | |
3738 | #else | |
437f6112 | 3739 | nread = read (input_fd, cbuf, n_to_read); |
80e4aa30 | 3740 | #endif |
762f2b92 | 3741 | #if defined (AIX) && (! defined (aix386) && defined (_BSD)) |
284f4730 JB |
3742 | /* The kernel sometimes fails to deliver SIGHUP for ptys. |
3743 | This looks incorrect, but it isn't, because _BSD causes | |
3744 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3745 | and that causes a value other than 0 when there is no input. */ | |
854f3a54 | 3746 | if (nread == 0) |
80e4aa30 | 3747 | kill (0, SIGHUP); |
284f4730 | 3748 | #endif |
9134775b | 3749 | } |
791587ee KH |
3750 | while ( |
3751 | /* We used to retry the read if it was interrupted. | |
3752 | But this does the wrong thing when O_NDELAY causes | |
3753 | an EAGAIN error. Does anybody know of a situation | |
3754 | where a retry is actually needed? */ | |
3755 | #if 0 | |
3756 | nread < 0 && (errno == EAGAIN | |
6aec06f5 | 3757 | #ifdef EFAULT |
9134775b | 3758 | || errno == EFAULT |
80e4aa30 | 3759 | #endif |
284f4730 | 3760 | #ifdef EBADSLT |
9134775b | 3761 | || errno == EBADSLT |
284f4730 | 3762 | #endif |
791587ee KH |
3763 | ) |
3764 | #else | |
3765 | 0 | |
3766 | #endif | |
3767 | ); | |
284f4730 JB |
3768 | |
3769 | #ifndef FIONREAD | |
02c2c53f | 3770 | #if defined (USG) || defined (DGUX) |
437f6112 | 3771 | fcntl (input_fd, F_SETFL, 0); |
02c2c53f | 3772 | #endif /* USG or DGUX */ |
284f4730 JB |
3773 | #endif /* no FIONREAD */ |
3774 | for (i = 0; i < nread; i++) | |
3775 | { | |
3776 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3777 | buf[i].modifiers = 0; |
b04904fb | 3778 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3779 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3780 | if (meta_key != 2) |
3781 | cbuf[i] &= ~0x80; | |
f3e59d5e KH |
3782 | |
3783 | buf[i].code = cbuf[i]; | |
7b4aedb9 | 3784 | #ifdef MULTI_FRAME |
18cd2eeb | 3785 | XSETFRAME (buf[i].frame_or_window, selected_frame); |
7b4aedb9 JB |
3786 | #else |
3787 | buf[i].frame_or_window = Qnil; | |
3788 | #endif | |
284f4730 JB |
3789 | } |
3790 | } | |
3791 | ||
3792 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3793 | for (i = 0; i < nread; i++) | |
3794 | { | |
3795 | kbd_buffer_store_event (&buf[i]); | |
3796 | /* Don't look at input that follows a C-g too closely. | |
3797 | This reduces lossage due to autorepeat on C-g. */ | |
3798 | if (buf[i].kind == ascii_keystroke | |
9343ab07 | 3799 | && buf[i].code == quit_char) |
284f4730 JB |
3800 | break; |
3801 | } | |
3802 | ||
3803 | return nread; | |
3804 | } | |
3805 | #endif /* not VMS */ | |
3806 | \f | |
3807 | #ifdef SIGIO /* for entire page */ | |
3808 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3809 | ||
2ce30ea2 | 3810 | SIGTYPE |
284f4730 JB |
3811 | input_available_signal (signo) |
3812 | int signo; | |
3813 | { | |
3814 | /* Must preserve main program's value of errno. */ | |
3815 | int old_errno = errno; | |
3816 | #ifdef BSD4_1 | |
3817 | extern int select_alarmed; | |
3818 | #endif | |
3819 | ||
3820 | #ifdef USG | |
3821 | /* USG systems forget handlers when they are used; | |
3822 | must reestablish each time */ | |
3823 | signal (signo, input_available_signal); | |
3824 | #endif /* USG */ | |
3825 | ||
3826 | #ifdef BSD4_1 | |
3827 | sigisheld (SIGIO); | |
3828 | #endif | |
3829 | ||
ffd56f97 JB |
3830 | if (input_available_clear_time) |
3831 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3832 | |
3833 | while (1) | |
3834 | { | |
3835 | int nread; | |
3836 | nread = read_avail_input (1); | |
3837 | /* -1 means it's not ok to read the input now. | |
3838 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3839 | 0 means there was no keyboard input available. */ | |
3840 | if (nread <= 0) | |
3841 | break; | |
3842 | ||
3843 | #ifdef BSD4_1 | |
3844 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3845 | #endif | |
3846 | } | |
3847 | ||
3848 | #ifdef BSD4_1 | |
3849 | sigfree (); | |
3850 | #endif | |
3851 | errno = old_errno; | |
3852 | } | |
3853 | #endif /* SIGIO */ | |
ad163903 JB |
3854 | |
3855 | /* Send ourselves a SIGIO. | |
3856 | ||
3857 | This function exists so that the UNBLOCK_INPUT macro in | |
3858 | blockinput.h can have some way to take care of input we put off | |
3859 | dealing with, without assuming that every file which uses | |
3860 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3861 | void | |
3862 | reinvoke_input_signal () | |
3863 | { | |
3864 | #ifdef SIGIO | |
3865 | kill (0, SIGIO); | |
3866 | #endif | |
3867 | } | |
3868 | ||
3869 | ||
284f4730 JB |
3870 | \f |
3871 | /* Return the prompt-string of a sparse keymap. | |
3872 | This is the first element which is a string. | |
3873 | Return nil if there is none. */ | |
3874 | ||
3875 | Lisp_Object | |
3876 | map_prompt (map) | |
3877 | Lisp_Object map; | |
3878 | { | |
3879 | while (CONSP (map)) | |
3880 | { | |
3881 | register Lisp_Object tem; | |
3882 | tem = Fcar (map); | |
8c18cbfb | 3883 | if (STRINGP (tem)) |
284f4730 JB |
3884 | return tem; |
3885 | map = Fcdr (map); | |
3886 | } | |
3887 | return Qnil; | |
3888 | } | |
3889 | ||
b7c49376 RS |
3890 | static void menu_bar_item (); |
3891 | static void menu_bar_one_keymap (); | |
3892 | ||
3893 | /* These variables hold the vector under construction within | |
3894 | menu_bar_items and its subroutines, and the current index | |
3895 | for storing into that vector. */ | |
3896 | static Lisp_Object menu_bar_items_vector; | |
9343ab07 | 3897 | static int menu_bar_items_index; |
5ec75a55 | 3898 | |
b7c49376 RS |
3899 | /* Return a vector of menu items for a menu bar, appropriate |
3900 | to the current buffer. Each item has three elements in the vector: | |
f5e09c8b | 3901 | KEY STRING MAPLIST. |
b7c49376 RS |
3902 | |
3903 | OLD is an old vector we can optionally reuse, or nil. */ | |
5ec75a55 RS |
3904 | |
3905 | Lisp_Object | |
b7c49376 RS |
3906 | menu_bar_items (old) |
3907 | Lisp_Object old; | |
5ec75a55 RS |
3908 | { |
3909 | /* The number of keymaps we're scanning right now, and the number of | |
3910 | keymaps we have allocated space for. */ | |
3911 | int nmaps; | |
3912 | ||
3913 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3914 | in the current keymaps, or nil where it is not a prefix. */ | |
3915 | Lisp_Object *maps; | |
3916 | ||
9f9c0e27 | 3917 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3918 | |
3919 | Lisp_Object result; | |
3920 | ||
3921 | int mapno; | |
47d319aa | 3922 | Lisp_Object oquit; |
5ec75a55 | 3923 | |
b7c49376 RS |
3924 | int i; |
3925 | ||
3926 | struct gcpro gcpro1; | |
3927 | ||
db60d856 JB |
3928 | /* In order to build the menus, we need to call the keymap |
3929 | accessors. They all call QUIT. But this function is called | |
3930 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3931 | quitting while building the menus. |
3932 | We do this instead of specbind because (1) errors will clear it anyway | |
3933 | and (2) this avoids risk of specpdl overflow. */ | |
3934 | oquit = Vinhibit_quit; | |
3935 | Vinhibit_quit = Qt; | |
db60d856 | 3936 | |
b7c49376 RS |
3937 | if (!NILP (old)) |
3938 | menu_bar_items_vector = old; | |
3939 | else | |
3940 | menu_bar_items_vector = Fmake_vector (make_number (24), Qnil); | |
3941 | menu_bar_items_index = 0; | |
3942 | ||
3943 | GCPRO1 (menu_bar_items_vector); | |
3944 | ||
5ec75a55 RS |
3945 | /* Build our list of keymaps. |
3946 | If we recognize a function key and replace its escape sequence in | |
3947 | keybuf with its symbol, or if the sequence starts with a mouse | |
3948 | click and we need to switch buffers, we jump back here to rebuild | |
3949 | the initial keymaps from the current buffer. */ | |
3950 | { | |
3951 | Lisp_Object *tmaps; | |
3952 | ||
d0a49716 RS |
3953 | /* Should overriding-local-map apply, here? */ |
3954 | if (!NILP (Voverriding_local_map_menu_flag)) | |
9dd3131c | 3955 | { |
d0a49716 RS |
3956 | if (NILP (Voverriding_local_map)) |
3957 | { | |
3958 | /* Yes, and it is nil. Use just global map. */ | |
3959 | nmaps = 1; | |
3960 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3961 | } | |
3962 | else | |
3963 | { | |
3964 | /* Yes, and it is non-nil. Use it and the global map. */ | |
3965 | nmaps = 2; | |
3966 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3967 | maps[0] = Voverriding_local_map; | |
3968 | } | |
9dd3131c RS |
3969 | } |
3970 | else | |
3971 | { | |
d0a49716 | 3972 | /* No, so use major and minor mode keymaps. */ |
9dd3131c RS |
3973 | nmaps = current_minor_maps (0, &tmaps) + 2; |
3974 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3975 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
5ec75a55 | 3976 | #ifdef USE_TEXT_PROPERTIES |
9dd3131c | 3977 | maps[nmaps-2] = get_local_map (PT, current_buffer); |
5ec75a55 | 3978 | #else |
9dd3131c | 3979 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3980 | #endif |
9dd3131c | 3981 | } |
7e6992e0 | 3982 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3983 | } |
3984 | ||
3985 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3986 | ||
3987 | result = Qnil; | |
3988 | ||
e58aa385 | 3989 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3990 | { |
3991 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3992 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3993 | else |
3994 | def = Qnil; | |
3995 | ||
3996 | tem = Fkeymapp (def); | |
3997 | if (!NILP (tem)) | |
b7c49376 | 3998 | menu_bar_one_keymap (def); |
5ec75a55 RS |
3999 | } |
4000 | ||
b7c49376 RS |
4001 | /* Move to the end those items that should be at the end. */ |
4002 | ||
9f9c0e27 RS |
4003 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
4004 | { | |
b7c49376 RS |
4005 | int i; |
4006 | int end = menu_bar_items_index; | |
4007 | ||
4008 | for (i = 0; i < end; i += 3) | |
4009 | if (EQ (XCONS (tail)->car, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4010 | { | |
0301268e RS |
4011 | Lisp_Object tem0, tem1, tem2; |
4012 | /* Move the item at index I to the end, | |
4013 | shifting all the others forward. */ | |
4014 | tem0 = XVECTOR (menu_bar_items_vector)->contents[i + 0]; | |
4015 | tem1 = XVECTOR (menu_bar_items_vector)->contents[i + 1]; | |
4016 | tem2 = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4017 | if (end > i + 3) | |
4018 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4019 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4020 | (end - i - 3) * sizeof (Lisp_Object)); | |
4021 | XVECTOR (menu_bar_items_vector)->contents[end - 3] = tem0; | |
4022 | XVECTOR (menu_bar_items_vector)->contents[end - 2] = tem1; | |
4023 | XVECTOR (menu_bar_items_vector)->contents[end - 1] = tem2; | |
4024 | break; | |
b7c49376 RS |
4025 | } |
4026 | } | |
9f9c0e27 | 4027 | |
b7c49376 RS |
4028 | /* Add nil, nil, nil at the end. */ |
4029 | i = menu_bar_items_index; | |
4030 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4031 | { | |
4032 | Lisp_Object tem; | |
4033 | int newsize = 2 * i; | |
4034 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4035 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4036 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4037 | menu_bar_items_vector = tem; | |
9f9c0e27 | 4038 | } |
b7c49376 RS |
4039 | /* Add this item. */ |
4040 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4041 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4042 | XVECTOR (menu_bar_items_vector)->contents[i++] = Qnil; | |
4043 | menu_bar_items_index = i; | |
a73c5e29 | 4044 | |
47d319aa | 4045 | Vinhibit_quit = oquit; |
b7c49376 RS |
4046 | UNGCPRO; |
4047 | return menu_bar_items_vector; | |
5ec75a55 RS |
4048 | } |
4049 | \f | |
4050 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
f5e09c8b | 4051 | in menu_bar_items_vector. */ |
5ec75a55 | 4052 | |
b7c49376 RS |
4053 | static void |
4054 | menu_bar_one_keymap (keymap) | |
4055 | Lisp_Object keymap; | |
5ec75a55 RS |
4056 | { |
4057 | Lisp_Object tail, item, key, binding, item_string, table; | |
4058 | ||
4059 | /* Loop over all keymap entries that have menu strings. */ | |
8c18cbfb | 4060 | for (tail = keymap; CONSP (tail); tail = XCONS (tail)->cdr) |
5ec75a55 RS |
4061 | { |
4062 | item = XCONS (tail)->car; | |
8c18cbfb | 4063 | if (CONSP (item)) |
5ec75a55 RS |
4064 | { |
4065 | key = XCONS (item)->car; | |
4066 | binding = XCONS (item)->cdr; | |
8c18cbfb | 4067 | if (CONSP (binding)) |
5ec75a55 RS |
4068 | { |
4069 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4070 | if (STRINGP (item_string)) |
b7c49376 | 4071 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4072 | } |
e58aa385 | 4073 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4074 | menu_bar_item (key, Qnil, binding); |
5ec75a55 | 4075 | } |
8c18cbfb | 4076 | else if (VECTORP (item)) |
5ec75a55 RS |
4077 | { |
4078 | /* Loop over the char values represented in the vector. */ | |
4079 | int len = XVECTOR (item)->size; | |
4080 | int c; | |
4081 | for (c = 0; c < len; c++) | |
4082 | { | |
4083 | Lisp_Object character; | |
bb9e9bed | 4084 | XSETFASTINT (character, c); |
5ec75a55 | 4085 | binding = XVECTOR (item)->contents[c]; |
8c18cbfb | 4086 | if (CONSP (binding)) |
5ec75a55 RS |
4087 | { |
4088 | item_string = XCONS (binding)->car; | |
8c18cbfb | 4089 | if (STRINGP (item_string)) |
b7c49376 | 4090 | menu_bar_item (key, item_string, Fcdr (binding)); |
5ec75a55 | 4091 | } |
e58aa385 | 4092 | else if (EQ (binding, Qundefined)) |
8aa034e1 | 4093 | menu_bar_item (key, Qnil, binding); |
5ec75a55 RS |
4094 | } |
4095 | } | |
4096 | } | |
5ec75a55 RS |
4097 | } |
4098 | ||
047a8ea7 RS |
4099 | /* This is used as the handler when calling internal_condition_case_1. */ |
4100 | ||
4101 | static Lisp_Object | |
4102 | menu_bar_item_1 (arg) | |
4103 | Lisp_Object arg; | |
4104 | { | |
4105 | return Qnil; | |
4106 | } | |
4107 | ||
f5e09c8b RS |
4108 | /* Add one item to menu_bar_items_vector, for KEY, ITEM_STRING and DEF. |
4109 | If there's already an item for KEY, add this DEF to it. */ | |
4110 | ||
b7c49376 RS |
4111 | static void |
4112 | menu_bar_item (key, item_string, def) | |
4113 | Lisp_Object key, item_string, def; | |
5ec75a55 | 4114 | { |
e58aa385 | 4115 | Lisp_Object tem; |
5ec75a55 | 4116 | Lisp_Object enabled; |
b7c49376 | 4117 | int i; |
5ec75a55 | 4118 | |
e58aa385 RS |
4119 | if (EQ (def, Qundefined)) |
4120 | { | |
f5e09c8b | 4121 | /* If a map has an explicit `undefined' as definition, |
e58aa385 | 4122 | discard any previously made menu bar item. */ |
b7c49376 RS |
4123 | |
4124 | for (i = 0; i < menu_bar_items_index; i += 3) | |
4125 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4126 | { | |
4127 | if (menu_bar_items_index > i + 3) | |
4128 | bcopy (&XVECTOR (menu_bar_items_vector)->contents[i + 3], | |
4129 | &XVECTOR (menu_bar_items_vector)->contents[i], | |
4130 | (menu_bar_items_index - i - 3) * sizeof (Lisp_Object)); | |
4131 | menu_bar_items_index -= 3; | |
4132 | return; | |
4133 | } | |
8aa034e1 RS |
4134 | |
4135 | /* If there's no definition for this key yet, | |
4136 | just ignore `undefined'. */ | |
4137 | return; | |
e58aa385 RS |
4138 | } |
4139 | ||
5ec75a55 RS |
4140 | /* See if this entry is enabled. */ |
4141 | enabled = Qt; | |
4142 | ||
8c18cbfb | 4143 | if (SYMBOLP (def)) |
5ec75a55 RS |
4144 | { |
4145 | /* No property, or nil, means enable. | |
4146 | Otherwise, enable if value is not nil. */ | |
4147 | tem = Fget (def, Qmenu_enable); | |
4148 | if (!NILP (tem)) | |
047a8ea7 RS |
4149 | /* (condition-case nil (eval tem) |
4150 | (error nil)) */ | |
4151 | enabled = internal_condition_case_1 (Feval, tem, Qerror, | |
4152 | menu_bar_item_1); | |
5ec75a55 RS |
4153 | } |
4154 | ||
b7c49376 RS |
4155 | /* Ignore this item if it's not enabled. */ |
4156 | if (NILP (enabled)) | |
4157 | return; | |
5ec75a55 | 4158 | |
f5e09c8b | 4159 | /* Find any existing item for this KEY. */ |
b7c49376 RS |
4160 | for (i = 0; i < menu_bar_items_index; i += 3) |
4161 | if (EQ (key, XVECTOR (menu_bar_items_vector)->contents[i])) | |
4162 | break; | |
4163 | ||
f5e09c8b | 4164 | /* If we did not find this KEY, add it at the end. */ |
b7c49376 RS |
4165 | if (i == menu_bar_items_index) |
4166 | { | |
4167 | /* If vector is too small, get a bigger one. */ | |
4168 | if (i + 3 > XVECTOR (menu_bar_items_vector)->size) | |
4169 | { | |
4170 | Lisp_Object tem; | |
4171 | int newsize = 2 * i; | |
4172 | tem = Fmake_vector (make_number (2 * i), Qnil); | |
4173 | bcopy (XVECTOR (menu_bar_items_vector)->contents, | |
4174 | XVECTOR (tem)->contents, i * sizeof (Lisp_Object)); | |
4175 | menu_bar_items_vector = tem; | |
4176 | } | |
4177 | /* Add this item. */ | |
4178 | XVECTOR (menu_bar_items_vector)->contents[i++] = key; | |
4179 | XVECTOR (menu_bar_items_vector)->contents[i++] = item_string; | |
f5e09c8b | 4180 | XVECTOR (menu_bar_items_vector)->contents[i++] = Fcons (def, Qnil); |
b7c49376 RS |
4181 | menu_bar_items_index = i; |
4182 | } | |
f5e09c8b RS |
4183 | /* We did find an item for this KEY. Add DEF to its list of maps. */ |
4184 | else | |
4185 | { | |
4186 | Lisp_Object old; | |
4187 | old = XVECTOR (menu_bar_items_vector)->contents[i + 2]; | |
4188 | XVECTOR (menu_bar_items_vector)->contents[i + 2] = Fcons (def, old); | |
4189 | } | |
5ec75a55 RS |
4190 | } |
4191 | \f | |
dcc408a0 RS |
4192 | /* Read a character using menus based on maps in the array MAPS. |
4193 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
4194 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
4195 | |
4196 | PREV_EVENT is the previous input event, or nil if we are reading | |
4197 | the first event of a key sequence. | |
4198 | ||
6569cc8d JB |
4199 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
4200 | if we used a mouse menu to read the input, or zero otherwise. If | |
4201 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
4202 | |
4203 | The prompting is done based on the prompt-string of the map | |
8150596a RS |
4204 | and the strings associated with various map elements. |
4205 | ||
4206 | This can be done with X menus or with menus put in the minibuf. | |
4207 | These are done in different ways, depending on how the input will be read. | |
4208 | Menus using X are done after auto-saving in read-char, getting the input | |
4209 | event from Fx_popup_menu; menus using the minibuf use read_char recursively | |
4210 | and do auto-saving in the inner call of read_char. */ | |
284f4730 | 4211 | |
7617111f | 4212 | static Lisp_Object |
8150596a | 4213 | read_char_x_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
7d6de002 RS |
4214 | int nmaps; |
4215 | Lisp_Object *maps; | |
4216 | Lisp_Object prev_event; | |
4217 | int *used_mouse_menu; | |
284f4730 | 4218 | { |
7d6de002 RS |
4219 | int mapno; |
4220 | register Lisp_Object name; | |
7d6de002 RS |
4221 | Lisp_Object rest, vector; |
4222 | ||
6569cc8d JB |
4223 | if (used_mouse_menu) |
4224 | *used_mouse_menu = 0; | |
284f4730 JB |
4225 | |
4226 | /* Use local over global Menu maps */ | |
4227 | ||
7d6de002 RS |
4228 | if (! menu_prompting) |
4229 | return Qnil; | |
4230 | ||
03361bcc RS |
4231 | /* Optionally disregard all but the global map. */ |
4232 | if (inhibit_local_menu_bar_menus) | |
4233 | { | |
4234 | maps += (nmaps - 1); | |
4235 | nmaps = 1; | |
4236 | } | |
4237 | ||
7d6de002 RS |
4238 | /* Get the menu name from the first map that has one (a prompt string). */ |
4239 | for (mapno = 0; mapno < nmaps; mapno++) | |
4240 | { | |
4241 | name = map_prompt (maps[mapno]); | |
4242 | if (!NILP (name)) | |
4243 | break; | |
4244 | } | |
284f4730 | 4245 | |
7d6de002 | 4246 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 4247 | if (mapno >= nmaps) |
7d6de002 RS |
4248 | return Qnil; |
4249 | ||
87485d6f | 4250 | #if (defined (HAVE_X_WINDOWS) && defined (HAVE_X_MENU)) || defined (MSDOS) |
7d6de002 RS |
4251 | /* If we got to this point via a mouse click, |
4252 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 4253 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
4254 | { |
4255 | /* Display the menu and get the selection. */ | |
4256 | Lisp_Object *realmaps | |
4257 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
4258 | Lisp_Object value; | |
4259 | int nmaps1 = 0; | |
4260 | ||
4261 | /* Use the maps that are not nil. */ | |
4262 | for (mapno = 0; mapno < nmaps; mapno++) | |
4263 | if (!NILP (maps[mapno])) | |
4264 | realmaps[nmaps1++] = maps[mapno]; | |
4265 | ||
4266 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
4267 | if (CONSP (value)) |
4268 | { | |
4269 | /* If we got more than one event, put all but the first | |
4270 | onto this list to be read later. | |
4271 | Return just the first event now. */ | |
24597608 RS |
4272 | Vunread_command_events |
4273 | = nconc2 (XCONS (value)->cdr, Vunread_command_events); | |
663258f2 JB |
4274 | value = XCONS (value)->car; |
4275 | } | |
1c90c381 | 4276 | else if (NILP (value)) |
dcc408a0 | 4277 | value = Qt; |
6569cc8d JB |
4278 | if (used_mouse_menu) |
4279 | *used_mouse_menu = 1; | |
7d6de002 RS |
4280 | return value; |
4281 | } | |
87485d6f | 4282 | #endif /* (HAVE_X_WINDOWS && HAVE_X_MENU) || MSDOS */ |
8150596a RS |
4283 | return Qnil ; |
4284 | } | |
4285 | ||
4286 | static Lisp_Object | |
24597608 | 4287 | read_char_minibuf_menu_prompt (commandflag, nmaps, maps) |
8150596a RS |
4288 | int commandflag ; |
4289 | int nmaps; | |
4290 | Lisp_Object *maps; | |
4291 | { | |
4292 | int mapno; | |
4293 | register Lisp_Object name; | |
4294 | int nlength; | |
4295 | int width = FRAME_WIDTH (selected_frame) - 4; | |
4296 | char *menu = (char *) alloca (width + 4); | |
4297 | int idx = -1; | |
9fdbfdf8 | 4298 | int nobindings = 1; |
8150596a RS |
4299 | Lisp_Object rest, vector; |
4300 | ||
4301 | if (! menu_prompting) | |
4302 | return Qnil; | |
4303 | ||
4304 | /* Get the menu name from the first map that has one (a prompt string). */ | |
4305 | for (mapno = 0; mapno < nmaps; mapno++) | |
4306 | { | |
4307 | name = map_prompt (maps[mapno]); | |
4308 | if (!NILP (name)) | |
4309 | break; | |
4310 | } | |
4311 | ||
4312 | /* If we don't have any menus, just read a character normally. */ | |
4313 | if (mapno >= nmaps) | |
4314 | return Qnil; | |
284f4730 JB |
4315 | |
4316 | /* Prompt string always starts with map's prompt, and a space. */ | |
4317 | strcpy (menu, XSTRING (name)->data); | |
4318 | nlength = XSTRING (name)->size; | |
7d6de002 | 4319 | menu[nlength++] = ':'; |
284f4730 JB |
4320 | menu[nlength++] = ' '; |
4321 | menu[nlength] = 0; | |
4322 | ||
7d6de002 RS |
4323 | /* Start prompting at start of first map. */ |
4324 | mapno = 0; | |
4325 | rest = maps[mapno]; | |
284f4730 JB |
4326 | |
4327 | /* Present the documented bindings, a line at a time. */ | |
4328 | while (1) | |
4329 | { | |
4330 | int notfirst = 0; | |
4331 | int i = nlength; | |
4332 | Lisp_Object obj; | |
4333 | int ch; | |
8150596a | 4334 | int orig_defn_macro ; |
284f4730 | 4335 | |
284f4730 | 4336 | /* Loop over elements of map. */ |
7d6de002 | 4337 | while (i < width) |
284f4730 | 4338 | { |
7d6de002 | 4339 | Lisp_Object s, elt; |
284f4730 | 4340 | |
7d6de002 RS |
4341 | /* If reached end of map, start at beginning of next map. */ |
4342 | if (NILP (rest)) | |
4343 | { | |
4344 | mapno++; | |
4345 | /* At end of last map, wrap around to first map if just starting, | |
4346 | or end this line if already have something on it. */ | |
4347 | if (mapno == nmaps) | |
284f4730 | 4348 | { |
8150596a | 4349 | mapno = 0; |
40932d1a | 4350 | if (notfirst || nobindings) break; |
284f4730 | 4351 | } |
7d6de002 | 4352 | rest = maps[mapno]; |
284f4730 | 4353 | } |
7d6de002 RS |
4354 | |
4355 | /* Look at the next element of the map. */ | |
4356 | if (idx >= 0) | |
4357 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 4358 | else |
7d6de002 RS |
4359 | elt = Fcar_safe (rest); |
4360 | ||
8c18cbfb | 4361 | if (idx < 0 && VECTORP (elt)) |
284f4730 | 4362 | { |
7d6de002 RS |
4363 | /* If we found a dense table in the keymap, |
4364 | advanced past it, but start scanning its contents. */ | |
4365 | rest = Fcdr_safe (rest); | |
4366 | vector = elt; | |
4367 | idx = 0; | |
284f4730 | 4368 | } |
7d6de002 RS |
4369 | else |
4370 | { | |
4371 | /* An ordinary element. */ | |
8150596a RS |
4372 | if ( idx < 0 ) |
4373 | s = Fcar_safe (Fcdr_safe (elt)); /* alist */ | |
4374 | else | |
4375 | s = Fcar_safe(elt); /* vector */ | |
8c18cbfb | 4376 | if (!STRINGP (s)) |
7d6de002 RS |
4377 | /* Ignore the element if it has no prompt string. */ |
4378 | ; | |
4379 | /* If we have room for the prompt string, add it to this line. | |
4380 | If this is the first on the line, always add it. */ | |
8150596a | 4381 | else if (XSTRING (s)->size + i + 2 < width |
7d6de002 RS |
4382 | || !notfirst) |
4383 | { | |
4384 | int thiswidth; | |
284f4730 | 4385 | |
7d6de002 RS |
4386 | /* Punctuate between strings. */ |
4387 | if (notfirst) | |
4388 | { | |
4389 | strcpy (menu + i, ", "); | |
4390 | i += 2; | |
4391 | } | |
4392 | notfirst = 1; | |
8150596a | 4393 | nobindings = 0 ; |
7d6de002 RS |
4394 | |
4395 | /* Add as much of string as fits. */ | |
4396 | thiswidth = XSTRING (s)->size; | |
4397 | if (thiswidth + i > width) | |
4398 | thiswidth = width - i; | |
4399 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
4400 | i += thiswidth; | |
8150596a | 4401 | menu[i] = 0; |
7d6de002 RS |
4402 | } |
4403 | else | |
4404 | { | |
4405 | /* If this element does not fit, end the line now, | |
4406 | and save the element for the next line. */ | |
4407 | strcpy (menu + i, "..."); | |
4408 | break; | |
4409 | } | |
4410 | ||
4411 | /* Move past this element. */ | |
8150596a | 4412 | if (idx >= 0 && idx + 1 >= XVECTOR (vector)->size) |
7d6de002 RS |
4413 | /* Handle reaching end of dense table. */ |
4414 | idx = -1; | |
4415 | if (idx >= 0) | |
4416 | idx++; | |
4417 | else | |
4418 | rest = Fcdr_safe (rest); | |
4419 | } | |
284f4730 JB |
4420 | } |
4421 | ||
4422 | /* Prompt with that and read response. */ | |
4423 | message1 (menu); | |
8150596a RS |
4424 | |
4425 | /* Make believe its not a keyboard macro in case the help char | |
4426 | is pressed. Help characters are not recorded because menu prompting | |
4427 | is not used on replay. | |
4428 | */ | |
4429 | orig_defn_macro = defining_kbd_macro ; | |
4430 | defining_kbd_macro = 0 ; | |
3cb81011 KH |
4431 | do |
4432 | obj = read_char (commandflag, 0, 0, Qnil, 0); | |
8c18cbfb | 4433 | while (BUFFERP (obj)); |
8150596a | 4434 | defining_kbd_macro = orig_defn_macro ; |
284f4730 | 4435 | |
8c18cbfb | 4436 | if (!INTEGERP (obj)) |
284f4730 JB |
4437 | return obj; |
4438 | else | |
4439 | ch = XINT (obj); | |
4440 | ||
f4255cd1 | 4441 | if (! EQ (obj, menu_prompt_more_char) |
8c18cbfb | 4442 | && (!INTEGERP (menu_prompt_more_char) |
f4255cd1 | 4443 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
8150596a RS |
4444 | { |
4445 | if ( defining_kbd_macro ) | |
4446 | store_kbd_macro_char(obj) ; | |
4447 | return obj; | |
4448 | } | |
4449 | /* Help char - go round again */ | |
284f4730 JB |
4450 | } |
4451 | } | |
284f4730 JB |
4452 | \f |
4453 | /* Reading key sequences. */ | |
4454 | ||
4455 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
4456 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
4457 | keymap, or nil otherwise. Return the index of the first keymap in | |
4458 | which KEY has any binding, or NMAPS if no map has a binding. | |
4459 | ||
4460 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4461 | followed by the corresponding non-meta character. Keymaps in | |
4462 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
4463 | NEXT. | |
4464 | ||
88cb0656 JB |
4465 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
4466 | unmodified. | |
4467 | ||
284f4730 JB |
4468 | NEXT may == CURRENT. */ |
4469 | ||
4470 | static int | |
4e50f26a | 4471 | follow_key (key, nmaps, current, defs, next) |
284f4730 JB |
4472 | Lisp_Object key; |
4473 | Lisp_Object *current, *defs, *next; | |
4474 | int nmaps; | |
4475 | { | |
4476 | int i, first_binding; | |
4477 | ||
4478 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
4479 | followed by the corresponding non-meta character. */ | |
8c18cbfb | 4480 | if (INTEGERP (key) && (XINT (key) & CHAR_META)) |
284f4730 JB |
4481 | { |
4482 | for (i = 0; i < nmaps; i++) | |
4483 | if (! NILP (current[i])) | |
4484 | { | |
cd21b839 | 4485 | next[i] = |
e74fbc70 | 4486 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
4487 | |
4488 | /* Note that since we pass the resulting bindings through | |
4489 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
4490 | disappear. */ | |
f4255cd1 | 4491 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
4492 | } |
4493 | else | |
4494 | next[i] = Qnil; | |
4495 | ||
4496 | current = next; | |
18cd2eeb | 4497 | XSETINT (key, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
4498 | } |
4499 | ||
4500 | first_binding = nmaps; | |
4501 | for (i = nmaps - 1; i >= 0; i--) | |
4502 | { | |
4503 | if (! NILP (current[i])) | |
4504 | { | |
e74fbc70 | 4505 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
4506 | if (! NILP (defs[i])) |
4507 | first_binding = i; | |
4508 | } | |
4509 | else | |
4510 | defs[i] = Qnil; | |
4511 | } | |
4512 | ||
284f4730 | 4513 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
4514 | if (first_binding < nmaps) |
4515 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 4516 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
4517 | |
4518 | return first_binding; | |
4519 | } | |
4520 | ||
f4255cd1 JB |
4521 | /* Read a sequence of keys that ends with a non prefix character, |
4522 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
4523 | Prompt with PROMPT. | |
284f4730 | 4524 | Return the length of the key sequence stored. |
dcc408a0 | 4525 | Return -1 if the user rejected a command menu. |
284f4730 | 4526 | |
f4255cd1 JB |
4527 | Echo starting immediately unless `prompt' is 0. |
4528 | ||
4529 | Where a key sequence ends depends on the currently active keymaps. | |
4530 | These include any minor mode keymaps active in the current buffer, | |
4531 | the current buffer's local map, and the global map. | |
4532 | ||
4533 | If a key sequence has no other bindings, we check Vfunction_key_map | |
4534 | to see if some trailing subsequence might be the beginning of a | |
4535 | function key's sequence. If so, we try to read the whole function | |
4536 | key, and substitute its symbolic name into the key sequence. | |
4537 | ||
fbcd35bd JB |
4538 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
4539 | `double-' events into similar click events, if that would make them | |
4540 | bound. We try to turn `triple-' events first into `double-' events, | |
4541 | then into clicks. | |
f4255cd1 JB |
4542 | |
4543 | If we get a mouse click in a mode line, vertical divider, or other | |
4544 | non-text area, we treat the click as if it were prefixed by the | |
4545 | symbol denoting that area - `mode-line', `vertical-line', or | |
4546 | whatever. | |
4547 | ||
4548 | If the sequence starts with a mouse click, we read the key sequence | |
4549 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 4550 | |
f4255cd1 JB |
4551 | If the user switches frames in the midst of a key sequence, we put |
4552 | off the switch-frame event until later; the next call to | |
4553 | read_char will return it. */ | |
48e416d4 | 4554 | |
284f4730 | 4555 | static int |
309b0fc8 | 4556 | read_key_sequence (keybuf, bufsize, prompt, dont_downcase_last) |
284f4730 JB |
4557 | Lisp_Object *keybuf; |
4558 | int bufsize; | |
84d91fda | 4559 | Lisp_Object prompt; |
309b0fc8 | 4560 | int dont_downcase_last; |
284f4730 | 4561 | { |
f4255cd1 JB |
4562 | int count = specpdl_ptr - specpdl; |
4563 | ||
284f4730 JB |
4564 | /* How many keys there are in the current key sequence. */ |
4565 | int t; | |
4566 | ||
284f4730 JB |
4567 | /* The length of the echo buffer when we started reading, and |
4568 | the length of this_command_keys when we started reading. */ | |
4569 | int echo_start; | |
f4255cd1 | 4570 | int keys_start; |
284f4730 JB |
4571 | |
4572 | /* The number of keymaps we're scanning right now, and the number of | |
4573 | keymaps we have allocated space for. */ | |
4574 | int nmaps; | |
4575 | int nmaps_allocated = 0; | |
4576 | ||
284f4730 JB |
4577 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
4578 | the current keymaps. */ | |
4579 | Lisp_Object *defs; | |
4580 | ||
f4255cd1 JB |
4581 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
4582 | in the current keymaps, or nil where it is not a prefix. */ | |
4583 | Lisp_Object *submaps; | |
4584 | ||
e0dff5f6 RS |
4585 | /* The local map to start out with at start of key sequence. */ |
4586 | Lisp_Object orig_local_map; | |
4587 | ||
4588 | /* 1 if we have already considered switching to the local-map property | |
4589 | of the place where a mouse click occurred. */ | |
4590 | int localized_local_map = 0; | |
4591 | ||
f4255cd1 JB |
4592 | /* The index in defs[] of the first keymap that has a binding for |
4593 | this key sequence. In other words, the lowest i such that | |
4594 | defs[i] is non-nil. */ | |
284f4730 JB |
4595 | int first_binding; |
4596 | ||
f4255cd1 | 4597 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
4598 | input key. |
4599 | ||
4600 | We use this to recover after recognizing a function key. Once we | |
4601 | realize that a suffix of the current key sequence is actually a | |
4602 | function key's escape sequence, we replace the suffix with the | |
4603 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
4604 | contains a new and different key sequence, so the echo area, |
4605 | this_command_keys, and the submaps and defs arrays are wrong. In | |
4606 | this situation, we set mock_input to t, set t to 0, and jump to | |
4607 | restart_sequence; the loop will read keys from keybuf up until | |
4608 | mock_input, thus rebuilding the state; and then it will resume | |
4609 | reading characters from the keyboard. */ | |
284f4730 JB |
4610 | int mock_input = 0; |
4611 | ||
253598e4 | 4612 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
4613 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
4614 | and fkey_map is its binding. | |
253598e4 | 4615 | |
f4255cd1 JB |
4616 | These might be > t, indicating that all function key scanning |
4617 | should hold off until t reaches them. We do this when we've just | |
4618 | recognized a function key, to avoid searching for the function | |
4619 | key's again in Vfunction_key_map. */ | |
284f4730 | 4620 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 4621 | Lisp_Object fkey_map; |
284f4730 | 4622 | |
a612e298 RS |
4623 | /* Likewise, for key_translation_map. */ |
4624 | int keytran_start = 0, keytran_end = 0; | |
4625 | Lisp_Object keytran_map; | |
4626 | ||
cd21b839 JB |
4627 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
4628 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 4629 | Lisp_Object delayed_switch_frame; |
cd21b839 | 4630 | |
51763820 BF |
4631 | /* See the comment below... */ |
4632 | #if defined (GOBBLE_FIRST_EVENT) | |
4efda7dd | 4633 | Lisp_Object first_event; |
51763820 | 4634 | #endif |
4efda7dd | 4635 | |
309b0fc8 RS |
4636 | Lisp_Object original_uppercase; |
4637 | int original_uppercase_position = -1; | |
4638 | ||
bc536d84 | 4639 | /* Gets around Microsoft compiler limitations. */ |
309b0fc8 | 4640 | int dummyflag = 0; |
bc536d84 | 4641 | |
3b9189f8 RS |
4642 | struct buffer *starting_buffer; |
4643 | ||
e9bf89a0 RS |
4644 | /* Nonzero if we seem to have got the beginning of a binding |
4645 | in function_key_map. */ | |
4646 | int function_key_possible = 0; | |
00a78037 | 4647 | int key_translation_possible = 0; |
e9bf89a0 | 4648 | |
4efda7dd RS |
4649 | int junk; |
4650 | ||
4651 | last_nonmenu_event = Qnil; | |
4652 | ||
4653 | delayed_switch_frame = Qnil; | |
4654 | fkey_map = Vfunction_key_map; | |
a612e298 | 4655 | keytran_map = Vkey_translation_map; |
f4255cd1 | 4656 | |
a612e298 | 4657 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
4658 | if (NILP (Fkeymapp (Vfunction_key_map))) |
4659 | fkey_start = fkey_end = bufsize + 1; | |
4660 | ||
a612e298 RS |
4661 | /* If there is no key-translation-map, turn off scanning. */ |
4662 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
4663 | keytran_start = keytran_end = bufsize + 1; | |
4664 | ||
284f4730 JB |
4665 | if (INTERACTIVE) |
4666 | { | |
84d91fda RS |
4667 | if (!NILP (prompt)) |
4668 | echo_prompt (XSTRING (prompt)->data); | |
a98ea3f9 | 4669 | else if (cursor_in_echo_area && echo_keystrokes) |
284f4730 JB |
4670 | /* This doesn't put in a dash if the echo buffer is empty, so |
4671 | you don't always see a dash hanging out in the minibuffer. */ | |
4672 | echo_dash (); | |
284f4730 JB |
4673 | } |
4674 | ||
f4255cd1 JB |
4675 | /* Record the initial state of the echo area and this_command_keys; |
4676 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 4677 | if (INTERACTIVE) |
f4255cd1 JB |
4678 | echo_start = echo_length (); |
4679 | keys_start = this_command_key_count; | |
0a7f1fc0 | 4680 | |
51763820 BF |
4681 | #if defined (GOBBLE_FIRST_EVENT) |
4682 | /* This doesn't quite work, because some of the things that read_char | |
4683 | does cannot safely be bypassed. It seems too risky to try to make | |
4684 | this work right. */ | |
4685 | ||
4efda7dd RS |
4686 | /* Read the first char of the sequence specially, before setting |
4687 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
84d91fda | 4688 | first_event = read_char (NILP (prompt), 0, submaps, last_nonmenu_event, |
4efda7dd | 4689 | &junk); |
51763820 | 4690 | #endif /* GOBBLE_FIRST_EVENT */ |
4efda7dd | 4691 | |
e0dff5f6 RS |
4692 | orig_local_map = get_local_map (PT, current_buffer); |
4693 | ||
7b4aedb9 JB |
4694 | /* We jump here when the key sequence has been thoroughly changed, and |
4695 | we need to rescan it starting from the beginning. When we jump here, | |
4696 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 4697 | replay_sequence: |
7b4aedb9 | 4698 | |
3b9189f8 | 4699 | starting_buffer = current_buffer; |
e9bf89a0 | 4700 | function_key_possible = 0; |
00a78037 | 4701 | key_translation_possible = 0; |
3b9189f8 | 4702 | |
f4255cd1 | 4703 | /* Build our list of keymaps. |
07d2b8de JB |
4704 | If we recognize a function key and replace its escape sequence in |
4705 | keybuf with its symbol, or if the sequence starts with a mouse | |
4706 | click and we need to switch buffers, we jump back here to rebuild | |
4707 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
4708 | { |
4709 | Lisp_Object *maps; | |
4710 | ||
9dd3131c | 4711 | if (!NILP (Voverriding_local_map)) |
284f4730 | 4712 | { |
9dd3131c RS |
4713 | nmaps = 2; |
4714 | if (nmaps > nmaps_allocated) | |
4715 | { | |
4716 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4717 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4718 | nmaps_allocated = nmaps; | |
4719 | } | |
4720 | submaps[0] = Voverriding_local_map; | |
284f4730 | 4721 | } |
9dd3131c RS |
4722 | else |
4723 | { | |
4724 | nmaps = current_minor_maps (0, &maps) + 2; | |
4725 | if (nmaps > nmaps_allocated) | |
4726 | { | |
4727 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); | |
4728 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); | |
4729 | nmaps_allocated = nmaps; | |
4730 | } | |
4731 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); | |
497ba7a1 | 4732 | #ifdef USE_TEXT_PROPERTIES |
e0dff5f6 | 4733 | submaps[nmaps-2] = orig_local_map; |
497ba7a1 | 4734 | #else |
9dd3131c | 4735 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 4736 | #endif |
9dd3131c | 4737 | } |
7e6992e0 | 4738 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
4739 | } |
4740 | ||
4741 | /* Find an accurate initial value for first_binding. */ | |
4742 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 4743 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
4744 | break; |
4745 | ||
3b9189f8 | 4746 | /* Start from the beginning in keybuf. */ |
f4255cd1 JB |
4747 | t = 0; |
4748 | ||
4749 | /* These are no-ops the first time through, but if we restart, they | |
4750 | revert the echo area and this_command_keys to their original state. */ | |
4751 | this_command_key_count = keys_start; | |
40932d1a | 4752 | if (INTERACTIVE && t < mock_input) |
f4255cd1 JB |
4753 | echo_truncate (echo_start); |
4754 | ||
cca310da JB |
4755 | /* If the best binding for the current key sequence is a keymap, or |
4756 | we may be looking at a function key's escape sequence, keep on | |
4757 | reading. */ | |
253598e4 | 4758 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
4759 | || (first_binding >= nmaps |
4760 | && fkey_start < t | |
4761 | /* mock input is never part of a function key's sequence. */ | |
a612e298 | 4762 | && mock_input <= fkey_start) |
0d882d52 KH |
4763 | || (first_binding >= nmaps |
4764 | && keytran_start < t && key_translation_possible) | |
e9bf89a0 RS |
4765 | /* Don't return in the middle of a possible function key sequence, |
4766 | if the only bindings we found were via case conversion. | |
4767 | Thus, if ESC O a has a function-key-map translation | |
4768 | and ESC o has a binding, don't return after ESC O, | |
4769 | so that we can translate ESC O plus the next character. */ | |
4e50f26a | 4770 | ) |
284f4730 JB |
4771 | { |
4772 | Lisp_Object key; | |
7d6de002 | 4773 | int used_mouse_menu = 0; |
284f4730 | 4774 | |
7b4aedb9 JB |
4775 | /* Where the last real key started. If we need to throw away a |
4776 | key that has expanded into more than one element of keybuf | |
4777 | (say, a mouse click on the mode line which is being treated | |
4778 | as [mode-line (mouse-...)], then we backtrack to this point | |
4779 | of keybuf. */ | |
4780 | int last_real_key_start; | |
4781 | ||
0a7f1fc0 JB |
4782 | /* These variables are analogous to echo_start and keys_start; |
4783 | while those allow us to restart the entire key sequence, | |
4784 | echo_local_start and keys_local_start allow us to throw away | |
4785 | just one key. */ | |
f4255cd1 JB |
4786 | int echo_local_start, keys_local_start, local_first_binding; |
4787 | ||
284f4730 JB |
4788 | if (t >= bufsize) |
4789 | error ("key sequence too long"); | |
4790 | ||
f4255cd1 JB |
4791 | if (INTERACTIVE) |
4792 | echo_local_start = echo_length (); | |
4793 | keys_local_start = this_command_key_count; | |
4794 | local_first_binding = first_binding; | |
4795 | ||
4796 | replay_key: | |
0a7f1fc0 | 4797 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
4798 | jumped back up to replay_key; in that case, these restore the |
4799 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 4800 | loop. */ |
40932d1a | 4801 | if (INTERACTIVE && t < mock_input) |
f4255cd1 | 4802 | echo_truncate (echo_local_start); |
0a7f1fc0 JB |
4803 | this_command_key_count = keys_local_start; |
4804 | first_binding = local_first_binding; | |
4805 | ||
7e85b935 RS |
4806 | /* By default, assume each event is "real". */ |
4807 | last_real_key_start = t; | |
4808 | ||
f4255cd1 | 4809 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
4810 | if (t < mock_input) |
4811 | { | |
4812 | key = keybuf[t]; | |
4813 | add_command_key (key); | |
a98ea3f9 RS |
4814 | if (echo_keystrokes) |
4815 | echo_char (key); | |
284f4730 | 4816 | } |
253598e4 JB |
4817 | |
4818 | /* If not, we should actually read a character. */ | |
284f4730 JB |
4819 | else |
4820 | { | |
a6d53864 RS |
4821 | struct buffer *buf = current_buffer; |
4822 | ||
beecf6a1 KH |
4823 | { |
4824 | PERDISPLAY *interrupted_perdisplay = read_char_perdisplay; | |
4825 | if (setjmp (wrong_display_jmpbuf)) | |
4826 | { | |
4827 | while (t > 0) | |
4828 | interrupted_perdisplay->kbd_queue | |
4829 | = Fcons (keybuf[--t], interrupted_perdisplay->kbd_queue); | |
4830 | mock_input = 0; | |
4831 | goto replay_sequence; | |
4832 | } | |
4833 | key = read_char (NILP (prompt), nmaps, submaps, last_nonmenu_event, | |
4834 | &used_mouse_menu); | |
4835 | } | |
284f4730 | 4836 | |
dcc408a0 RS |
4837 | /* read_char returns t when it shows a menu and the user rejects it. |
4838 | Just return -1. */ | |
4839 | if (EQ (key, Qt)) | |
4840 | return -1; | |
4841 | ||
f4255cd1 | 4842 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
4843 | Emacs 18 handles this by returning immediately with a |
4844 | zero, so that's what we'll do. */ | |
8c18cbfb | 4845 | if (INTEGERP (key) && XINT (key) == -1) |
cd21b839 | 4846 | { |
f4255cd1 | 4847 | t = 0; |
bc536d84 RS |
4848 | /* The Microsoft C compiler can't handle the goto that |
4849 | would go here. */ | |
309b0fc8 | 4850 | dummyflag = 1; |
bc536d84 | 4851 | break; |
cd21b839 | 4852 | } |
284f4730 | 4853 | |
3cb81011 KH |
4854 | /* If the current buffer has been changed from under us, the |
4855 | keymap may have changed, so replay the sequence. */ | |
8c18cbfb | 4856 | if (BUFFERP (key)) |
3cb81011 KH |
4857 | { |
4858 | mock_input = t; | |
4859 | goto replay_sequence; | |
4860 | } | |
4861 | ||
3b9189f8 RS |
4862 | /* If we have a quit that was typed in another frame, and |
4863 | quit_throw_to_read_char switched buffers, | |
4864 | replay to get the right keymap. */ | |
9343ab07 | 4865 | if (XINT (key) == quit_char && current_buffer != starting_buffer) |
3b9189f8 RS |
4866 | { |
4867 | keybuf[t++] = key; | |
4868 | mock_input = t; | |
4869 | Vquit_flag = Qnil; | |
4870 | goto replay_sequence; | |
4871 | } | |
3cb81011 | 4872 | |
284f4730 | 4873 | Vquit_flag = Qnil; |
7e85b935 | 4874 | } |
284f4730 | 4875 | |
7e85b935 RS |
4876 | /* Clicks in non-text areas get prefixed by the symbol |
4877 | in their CHAR-ADDRESS field. For example, a click on | |
4878 | the mode line is prefixed by the symbol `mode-line'. | |
4879 | ||
4880 | Furthermore, key sequences beginning with mouse clicks | |
4881 | are read using the keymaps of the buffer clicked on, not | |
4882 | the current buffer. So we may have to switch the buffer | |
4883 | here. | |
4884 | ||
4885 | When we turn one event into two events, we must make sure | |
4886 | that neither of the two looks like the original--so that, | |
4887 | if we replay the events, they won't be expanded again. | |
4888 | If not for this, such reexpansion could happen either here | |
4889 | or when user programs play with this-command-keys. */ | |
4890 | if (EVENT_HAS_PARAMETERS (key)) | |
4891 | { | |
9b8eb840 | 4892 | Lisp_Object kind; |
cca310da | 4893 | |
9b8eb840 | 4894 | kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); |
7e85b935 | 4895 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 4896 | { |
9b8eb840 | 4897 | Lisp_Object window, posn; |
f4255cd1 | 4898 | |
9b8eb840 KH |
4899 | window = POSN_WINDOW (EVENT_START (key)); |
4900 | posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
8c18cbfb | 4901 | if (CONSP (posn)) |
0a7f1fc0 | 4902 | { |
7e85b935 RS |
4903 | /* We're looking at the second event of a |
4904 | sequence which we expanded before. Set | |
4905 | last_real_key_start appropriately. */ | |
4906 | if (t > 0) | |
4907 | last_real_key_start = t - 1; | |
cd21b839 | 4908 | } |
7e85b935 RS |
4909 | |
4910 | /* Key sequences beginning with mouse clicks are | |
4911 | read using the keymaps in the buffer clicked on, | |
4912 | not the current buffer. If we're at the | |
4913 | beginning of a key sequence, switch buffers. */ | |
4914 | if (last_real_key_start == 0 | |
8c18cbfb KH |
4915 | && WINDOWP (window) |
4916 | && BUFFERP (XWINDOW (window)->buffer) | |
7e85b935 | 4917 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) |
cd21b839 | 4918 | { |
7e85b935 RS |
4919 | keybuf[t] = key; |
4920 | mock_input = t + 1; | |
4921 | ||
4922 | /* Arrange to go back to the original buffer once we're | |
4923 | done reading the key sequence. Note that we can't | |
4924 | use save_excursion_{save,restore} here, because they | |
4925 | save point as well as the current buffer; we don't | |
4926 | want to save point, because redisplay may change it, | |
4927 | to accommodate a Fset_window_start or something. We | |
4928 | don't want to do this at the top of the function, | |
4929 | because we may get input from a subprocess which | |
4930 | wants to change the selected window and stuff (say, | |
4931 | emacsclient). */ | |
4932 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4933 | ||
4934 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
e0dff5f6 | 4935 | orig_local_map = get_local_map (PT, current_buffer); |
7e85b935 | 4936 | goto replay_sequence; |
0a7f1fc0 | 4937 | } |
e0dff5f6 RS |
4938 | /* For a mouse click, get the local text-property keymap |
4939 | of the place clicked on, rather than point. */ | |
4940 | if (last_real_key_start == 0 && CONSP (XCONS (key)->cdr) | |
4941 | && ! localized_local_map) | |
5ec75a55 | 4942 | { |
e0dff5f6 RS |
4943 | Lisp_Object map_here, start, pos; |
4944 | ||
4945 | localized_local_map = 1; | |
4946 | start = EVENT_START (key); | |
4947 | if (CONSP (start) && CONSP (XCONS (start)->cdr)) | |
4948 | { | |
4949 | pos = POSN_BUFFER_POSN (start); | |
4950 | if (INTEGERP (pos)) | |
4951 | { | |
4952 | map_here = get_local_map (XINT (pos), current_buffer); | |
4953 | if (!EQ (map_here, orig_local_map)) | |
4954 | { | |
4955 | orig_local_map = map_here; | |
4956 | keybuf[t] = key; | |
4957 | mock_input = t + 1; | |
5ec75a55 | 4958 | |
e0dff5f6 RS |
4959 | goto replay_sequence; |
4960 | } | |
4961 | } | |
4962 | } | |
4963 | } | |
4964 | ||
4965 | /* Expand mode-line and scroll-bar events into two events: | |
4966 | use posn as a fake prefix key. */ | |
4967 | if (SYMBOLP (posn)) | |
4968 | { | |
7e85b935 RS |
4969 | if (t + 1 >= bufsize) |
4970 | error ("key sequence too long"); | |
4971 | keybuf[t] = posn; | |
4972 | keybuf[t+1] = key; | |
4973 | mock_input = t + 2; | |
4974 | ||
4975 | /* Zap the position in key, so we know that we've | |
4976 | expanded it, and don't try to do so again. */ | |
4977 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4978 | = Fcons (posn, Qnil); | |
4979 | goto replay_key; | |
5ec75a55 | 4980 | } |
0a7f1fc0 | 4981 | } |
7e85b935 | 4982 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4983 | { |
7e85b935 RS |
4984 | /* If we're at the beginning of a key sequence, go |
4985 | ahead and return this event. If we're in the | |
4986 | midst of a key sequence, delay it until the end. */ | |
4987 | if (t > 0) | |
4988 | { | |
4989 | delayed_switch_frame = key; | |
4990 | goto replay_key; | |
4991 | } | |
4992 | } | |
7a80a6f6 RS |
4993 | else if (CONSP (XCONS (key)->cdr) |
4994 | && CONSP (EVENT_START (key)) | |
4995 | && CONSP (XCONS (EVENT_START (key))->cdr)) | |
7e85b935 | 4996 | { |
9b8eb840 | 4997 | Lisp_Object posn; |
7e85b935 | 4998 | |
9b8eb840 | 4999 | posn = POSN_BUFFER_POSN (EVENT_START (key)); |
7e85b935 RS |
5000 | /* Handle menu-bar events: |
5001 | insert the dummy prefix event `menu-bar'. */ | |
5002 | if (EQ (posn, Qmenu_bar)) | |
5003 | { | |
5004 | if (t + 1 >= bufsize) | |
5005 | error ("key sequence too long"); | |
5006 | /* Run the Lucid hook. */ | |
88ce066e RS |
5007 | if (!NILP (Vrun_hooks)) |
5008 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
7e85b935 RS |
5009 | /* If it has changed current-menubar from previous value, |
5010 | really recompute the menubar from the value. */ | |
5011 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
5012 | call0 (Qrecompute_lucid_menubar); | |
5013 | keybuf[t] = posn; | |
5014 | keybuf[t+1] = key; | |
5015 | ||
5016 | /* Zap the position in key, so we know that we've | |
5017 | expanded it, and don't try to do so again. */ | |
5018 | POSN_BUFFER_POSN (EVENT_START (key)) | |
5019 | = Fcons (posn, Qnil); | |
5020 | ||
5021 | mock_input = t + 2; | |
5022 | goto replay_sequence; | |
5023 | } | |
8c18cbfb | 5024 | else if (CONSP (posn)) |
7e85b935 RS |
5025 | { |
5026 | /* We're looking at the second event of a | |
5027 | sequence which we expanded before. Set | |
5028 | last_real_key_start appropriately. */ | |
5029 | if (last_real_key_start == t && t > 0) | |
5030 | last_real_key_start = t - 1; | |
5031 | } | |
a6d53864 | 5032 | } |
284f4730 | 5033 | } |
f4255cd1 JB |
5034 | |
5035 | /* We have finally decided that KEY is something we might want | |
5036 | to look up. */ | |
284f4730 JB |
5037 | first_binding = (follow_key (key, |
5038 | nmaps - first_binding, | |
253598e4 | 5039 | submaps + first_binding, |
284f4730 | 5040 | defs + first_binding, |
4e50f26a | 5041 | submaps + first_binding) |
284f4730 | 5042 | + first_binding); |
0a7f1fc0 | 5043 | |
f4255cd1 | 5044 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
5045 | if (first_binding >= nmaps) |
5046 | { | |
9b8eb840 | 5047 | Lisp_Object head; |
0a7f1fc0 | 5048 | |
9b8eb840 | 5049 | head = EVENT_HEAD (key); |
7e85b935 RS |
5050 | if (EQ (head, Vhelp_char)) |
5051 | { | |
5052 | read_key_sequence_cmd = Vprefix_help_command; | |
5053 | keybuf[t++] = key; | |
5054 | last_nonmenu_event = key; | |
bc536d84 RS |
5055 | /* The Microsoft C compiler can't handle the goto that |
5056 | would go here. */ | |
309b0fc8 | 5057 | dummyflag = 1; |
0d882d52 | 5058 | break; |
7e85b935 RS |
5059 | } |
5060 | ||
8c18cbfb | 5061 | if (SYMBOLP (head)) |
0a7f1fc0 | 5062 | { |
9b8eb840 KH |
5063 | Lisp_Object breakdown; |
5064 | int modifiers; | |
0a7f1fc0 | 5065 | |
9b8eb840 KH |
5066 | breakdown = parse_modifiers (head); |
5067 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
559f9d04 RS |
5068 | /* Attempt to reduce an unbound mouse event to a simpler |
5069 | event that is bound: | |
5070 | Drags reduce to clicks. | |
5071 | Double-clicks reduce to clicks. | |
5072 | Triple-clicks reduce to double-clicks, then to clicks. | |
5073 | Down-clicks are eliminated. | |
5074 | Double-downs reduce to downs, then are eliminated. | |
5075 | Triple-downs reduce to double-downs, then to downs, | |
5076 | then are eliminated. */ | |
5077 | if (modifiers & (down_modifier | drag_modifier | |
5078 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 5079 | { |
559f9d04 RS |
5080 | while (modifiers & (down_modifier | drag_modifier |
5081 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
5082 | { |
5083 | Lisp_Object new_head, new_click; | |
5084 | if (modifiers & triple_modifier) | |
5085 | modifiers ^= (double_modifier | triple_modifier); | |
bc536d84 RS |
5086 | else if (modifiers & double_modifier) |
5087 | modifiers &= ~double_modifier; | |
5088 | else if (modifiers & drag_modifier) | |
5089 | modifiers &= ~drag_modifier; | |
559f9d04 RS |
5090 | else |
5091 | { | |
5092 | /* Dispose of this `down' event by simply jumping | |
5093 | back to replay_key, to get another event. | |
5094 | ||
5095 | Note that if this event came from mock input, | |
5096 | then just jumping back to replay_key will just | |
5097 | hand it to us again. So we have to wipe out any | |
5098 | mock input. | |
5099 | ||
5100 | We could delete keybuf[t] and shift everything | |
5101 | after that to the left by one spot, but we'd also | |
5102 | have to fix up any variable that points into | |
5103 | keybuf, and shifting isn't really necessary | |
5104 | anyway. | |
5105 | ||
5106 | Adding prefixes for non-textual mouse clicks | |
5107 | creates two characters of mock input, and both | |
5108 | must be thrown away. If we're only looking at | |
5109 | the prefix now, we can just jump back to | |
5110 | replay_key. On the other hand, if we've already | |
5111 | processed the prefix, and now the actual click | |
5112 | itself is giving us trouble, then we've lost the | |
5113 | state of the keymaps we want to backtrack to, and | |
5114 | we need to replay the whole sequence to rebuild | |
5115 | it. | |
5116 | ||
5117 | Beyond that, only function key expansion could | |
5118 | create more than two keys, but that should never | |
5119 | generate mouse events, so it's okay to zero | |
5120 | mock_input in that case too. | |
5121 | ||
5122 | Isn't this just the most wonderful code ever? */ | |
5123 | if (t == last_real_key_start) | |
5124 | { | |
5125 | mock_input = 0; | |
5126 | goto replay_key; | |
5127 | } | |
5128 | else | |
5129 | { | |
5130 | mock_input = last_real_key_start; | |
5131 | goto replay_sequence; | |
5132 | } | |
5133 | } | |
5134 | ||
27203ead RS |
5135 | new_head |
5136 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
5137 | new_click | |
5138 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
5139 | |
5140 | /* Look for a binding for this new key. follow_key | |
5141 | promises that it didn't munge submaps the | |
5142 | last time we called it, since key was unbound. */ | |
27203ead RS |
5143 | first_binding |
5144 | = (follow_key (new_click, | |
5145 | nmaps - local_first_binding, | |
5146 | submaps + local_first_binding, | |
5147 | defs + local_first_binding, | |
4e50f26a | 5148 | submaps + local_first_binding) |
27203ead | 5149 | + local_first_binding); |
fbcd35bd JB |
5150 | |
5151 | /* If that click is bound, go for it. */ | |
5152 | if (first_binding < nmaps) | |
5153 | { | |
5154 | key = new_click; | |
5155 | break; | |
5156 | } | |
5157 | /* Otherwise, we'll leave key set to the drag event. */ | |
5158 | } | |
0a7f1fc0 JB |
5159 | } |
5160 | } | |
5161 | } | |
5162 | ||
284f4730 | 5163 | keybuf[t++] = key; |
7d6de002 RS |
5164 | /* Normally, last_nonmenu_event gets the previous key we read. |
5165 | But when a mouse popup menu is being used, | |
5166 | we don't update last_nonmenu_event; it continues to hold the mouse | |
5167 | event that preceded the first level of menu. */ | |
5168 | if (!used_mouse_menu) | |
5169 | last_nonmenu_event = key; | |
284f4730 JB |
5170 | |
5171 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
5172 | off the end of it. We only want to scan real keyboard input |
5173 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 5174 | re-reading old events, don't examine it. */ |
4e50f26a | 5175 | if (first_binding >= nmaps |
253598e4 | 5176 | && t >= mock_input) |
284f4730 JB |
5177 | { |
5178 | Lisp_Object fkey_next; | |
5179 | ||
e9bf89a0 RS |
5180 | /* Continue scan from fkey_end until we find a bound suffix. |
5181 | If we fail, increment fkey_start | |
5182 | and start fkey_end from there. */ | |
284f4730 JB |
5183 | while (fkey_end < t) |
5184 | { | |
f4255cd1 JB |
5185 | Lisp_Object key; |
5186 | ||
5187 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
5188 | /* Look up meta-characters by prefixing them |
5189 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5190 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
f4255cd1 | 5191 | { |
e74fbc70 RS |
5192 | fkey_next |
5193 | = get_keymap_1 | |
f4255cd1 | 5194 | (get_keyelt |
e74fbc70 | 5195 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 5196 | 0, 1); |
bb9e9bed | 5197 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
f4255cd1 | 5198 | } |
067ffa38 JB |
5199 | else |
5200 | fkey_next = fkey_map; | |
5201 | ||
e74fbc70 RS |
5202 | fkey_next |
5203 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 5204 | |
7a80a6f6 RS |
5205 | #if 0 /* I didn't turn this on, because it might cause trouble |
5206 | for the mapping of return into C-m and tab into C-i. */ | |
5207 | /* Optionally don't map function keys into other things. | |
5208 | This enables the user to redefine kp- keys easily. */ | |
5209 | if (SYMBOLP (key) && !NILP (Vinhibit_function_key_mapping)) | |
5210 | fkey_next = Qnil; | |
5211 | #endif | |
5212 | ||
1abe6abe RS |
5213 | /* If the function key map gives a function, not an |
5214 | array, then call the function with no args and use | |
5215 | its value instead. */ | |
5216 | if (SYMBOLP (fkey_next) && ! NILP (Ffboundp (fkey_next)) | |
5217 | && fkey_end == t) | |
5218 | { | |
5219 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5220 | Lisp_Object tem; | |
5221 | tem = fkey_next; | |
5222 | ||
5223 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); | |
84d91fda | 5224 | fkey_next = call1 (fkey_next, prompt); |
1abe6abe RS |
5225 | UNGCPRO; |
5226 | /* If the function returned something invalid, | |
5227 | barf--don't ignore it. | |
5228 | (To ignore it safely, we would need to gcpro a bunch of | |
5229 | other variables.) */ | |
5230 | if (! (VECTORP (fkey_next) || STRINGP (fkey_next))) | |
5231 | error ("Function in function-key-map returns invalid key sequence"); | |
5232 | } | |
5233 | ||
e9bf89a0 RS |
5234 | function_key_possible = ! NILP (fkey_next); |
5235 | ||
85bc5181 | 5236 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 5237 | function key map and it's a suffix of the current |
85bc5181 | 5238 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 5239 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 5240 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
5241 | && fkey_end == t) |
5242 | { | |
2e864a76 | 5243 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
5244 | |
5245 | t = fkey_start + len; | |
284f4730 JB |
5246 | if (t >= bufsize) |
5247 | error ("key sequence too long"); | |
5248 | ||
f5ea6163 JB |
5249 | if (VECTORP (fkey_next)) |
5250 | bcopy (XVECTOR (fkey_next)->contents, | |
5251 | keybuf + fkey_start, | |
5252 | (t - fkey_start) * sizeof (keybuf[0])); | |
5253 | else if (STRINGP (fkey_next)) | |
5254 | { | |
5255 | int i; | |
5256 | ||
5257 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5258 | XSETFASTINT (keybuf[fkey_start + i], |
5259 | XSTRING (fkey_next)->data[i]); | |
f5ea6163 | 5260 | } |
284f4730 JB |
5261 | |
5262 | mock_input = t; | |
5263 | fkey_start = fkey_end = t; | |
32e6d806 | 5264 | fkey_map = Vfunction_key_map; |
284f4730 | 5265 | |
00a78037 RS |
5266 | /* Do pass the results through key-translation-map. */ |
5267 | keytran_start = keytran_end = 0; | |
5268 | keytran_map = Vkey_translation_map; | |
5269 | ||
f4255cd1 | 5270 | goto replay_sequence; |
284f4730 JB |
5271 | } |
5272 | ||
f4255cd1 | 5273 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 5274 | |
a764a753 JB |
5275 | /* If we no longer have a bound suffix, try a new positions for |
5276 | fkey_start. */ | |
284f4730 JB |
5277 | if (NILP (fkey_map)) |
5278 | { | |
5279 | fkey_end = ++fkey_start; | |
5280 | fkey_map = Vfunction_key_map; | |
e9bf89a0 | 5281 | function_key_possible = 0; |
284f4730 JB |
5282 | } |
5283 | } | |
5284 | } | |
a612e298 RS |
5285 | |
5286 | /* Look for this sequence in key-translation-map. */ | |
5287 | { | |
5288 | Lisp_Object keytran_next; | |
5289 | ||
5290 | /* Scan from keytran_end until we find a bound suffix. */ | |
5291 | while (keytran_end < t) | |
5292 | { | |
5293 | Lisp_Object key; | |
5294 | ||
5295 | key = keybuf[keytran_end++]; | |
5296 | /* Look up meta-characters by prefixing them | |
5297 | with meta_prefix_char. I hate this. */ | |
8c18cbfb | 5298 | if (INTEGERP (key) && XINT (key) & meta_modifier) |
a612e298 RS |
5299 | { |
5300 | keytran_next | |
5301 | = get_keymap_1 | |
5302 | (get_keyelt | |
5303 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
5304 | 0, 1); | |
bb9e9bed | 5305 | XSETFASTINT (key, XFASTINT (key) & ~meta_modifier); |
a612e298 RS |
5306 | } |
5307 | else | |
5308 | keytran_next = keytran_map; | |
5309 | ||
5310 | keytran_next | |
5311 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
5312 | ||
1abe6abe RS |
5313 | /* If the key translation map gives a function, not an |
5314 | array, then call the function with no args and use | |
5315 | its value instead. */ | |
5316 | if (SYMBOLP (keytran_next) && ! NILP (Ffboundp (keytran_next)) | |
5317 | && keytran_end == t) | |
5318 | { | |
5319 | struct gcpro gcpro1, gcpro2, gcpro3; | |
5320 | Lisp_Object tem; | |
5321 | tem = keytran_next; | |
5322 | ||
40932d1a | 5323 | GCPRO3 (fkey_map, keytran_map, delayed_switch_frame); |
84d91fda | 5324 | keytran_next = call1 (keytran_next, prompt); |
1abe6abe RS |
5325 | UNGCPRO; |
5326 | /* If the function returned something invalid, | |
5327 | barf--don't ignore it. | |
5328 | (To ignore it safely, we would need to gcpro a bunch of | |
5329 | other variables.) */ | |
5330 | if (! (VECTORP (keytran_next) || STRINGP (keytran_next))) | |
40932d1a | 5331 | error ("Function in key-translation-map returns invalid key sequence"); |
1abe6abe RS |
5332 | } |
5333 | ||
00a78037 RS |
5334 | key_translation_possible = ! NILP (keytran_next); |
5335 | ||
a612e298 | 5336 | /* If keybuf[keytran_start..keytran_end] is bound in the |
1abe6abe | 5337 | key translation map and it's a suffix of the current |
a612e298 RS |
5338 | sequence (i.e. keytran_end == t), replace it with |
5339 | the binding and restart with keytran_start at the end. */ | |
5340 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
5341 | && keytran_end == t) | |
5342 | { | |
2e864a76 | 5343 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
5344 | |
5345 | t = keytran_start + len; | |
5346 | if (t >= bufsize) | |
5347 | error ("key sequence too long"); | |
5348 | ||
5349 | if (VECTORP (keytran_next)) | |
5350 | bcopy (XVECTOR (keytran_next)->contents, | |
5351 | keybuf + keytran_start, | |
5352 | (t - keytran_start) * sizeof (keybuf[0])); | |
5353 | else if (STRINGP (keytran_next)) | |
5354 | { | |
5355 | int i; | |
5356 | ||
5357 | for (i = 0; i < len; i++) | |
bb9e9bed KH |
5358 | XSETFASTINT (keybuf[keytran_start + i], |
5359 | XSTRING (keytran_next)->data[i]); | |
a612e298 RS |
5360 | } |
5361 | ||
5362 | mock_input = t; | |
5363 | keytran_start = keytran_end = t; | |
5364 | keytran_map = Vkey_translation_map; | |
5365 | ||
00a78037 RS |
5366 | /* Don't pass the results of key-translation-map |
5367 | through function-key-map. */ | |
5368 | fkey_start = fkey_end = t; | |
5369 | fkey_map = Vkey_translation_map; | |
5370 | ||
a612e298 RS |
5371 | goto replay_sequence; |
5372 | } | |
5373 | ||
5374 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
5375 | ||
5376 | /* If we no longer have a bound suffix, try a new positions for | |
5377 | keytran_start. */ | |
5378 | if (NILP (keytran_map)) | |
5379 | { | |
5380 | keytran_end = ++keytran_start; | |
5381 | keytran_map = Vkey_translation_map; | |
00a78037 | 5382 | key_translation_possible = 0; |
a612e298 RS |
5383 | } |
5384 | } | |
5385 | } | |
4e50f26a RS |
5386 | |
5387 | /* If KEY is not defined in any of the keymaps, | |
5388 | and cannot be part of a function key or translation, | |
5389 | and is an upper case letter | |
5390 | use the corresponding lower-case letter instead. */ | |
5391 | if (first_binding == nmaps && ! function_key_possible | |
00a78037 | 5392 | && ! key_translation_possible |
8c18cbfb | 5393 | && INTEGERP (key) |
4e50f26a RS |
5394 | && ((((XINT (key) & 0x3ffff) |
5395 | < XSTRING (current_buffer->downcase_table)->size) | |
5396 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
5397 | || (XINT (key) & shift_modifier))) | |
5398 | { | |
309b0fc8 RS |
5399 | original_uppercase = key; |
5400 | original_uppercase_position = t - 1; | |
5401 | ||
4e50f26a RS |
5402 | if (XINT (key) & shift_modifier) |
5403 | XSETINT (key, XINT (key) & ~shift_modifier); | |
5404 | else | |
5405 | XSETINT (key, (DOWNCASE (XINT (key) & 0x3ffff) | |
5406 | | (XINT (key) & ~0x3ffff))); | |
5407 | ||
5408 | keybuf[t - 1] = key; | |
5409 | mock_input = t; | |
5410 | goto replay_sequence; | |
5411 | } | |
ef8fd672 RS |
5412 | /* If KEY is not defined in any of the keymaps, |
5413 | and cannot be part of a function key or translation, | |
5414 | and is a shifted function key, | |
5415 | use the corresponding unshifted function key instead. */ | |
5416 | if (first_binding == nmaps && ! function_key_possible | |
5417 | && ! key_translation_possible | |
5418 | && SYMBOLP (key)) | |
5419 | { | |
5420 | Lisp_Object breakdown; | |
5421 | int modifiers; | |
5422 | ||
309b0fc8 RS |
5423 | original_uppercase = key; |
5424 | original_uppercase_position = t - 1; | |
5425 | ||
ef8fd672 RS |
5426 | breakdown = parse_modifiers (key); |
5427 | modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); | |
5428 | if (modifiers & shift_modifier) | |
5429 | { | |
5430 | modifiers &= ~shift_modifier; | |
5431 | key = apply_modifiers (make_number (modifiers), | |
5432 | XCONS (breakdown)->car); | |
5433 | ||
5434 | keybuf[t - 1] = key; | |
5435 | mock_input = t; | |
5436 | goto replay_sequence; | |
5437 | } | |
5438 | } | |
284f4730 JB |
5439 | } |
5440 | ||
309b0fc8 | 5441 | if (!dummyflag) |
bc536d84 RS |
5442 | read_key_sequence_cmd = (first_binding < nmaps |
5443 | ? defs[first_binding] | |
5444 | : Qnil); | |
284f4730 | 5445 | |
cd21b839 | 5446 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 5447 | unbind_to (count, Qnil); |
07f76a14 | 5448 | |
309b0fc8 RS |
5449 | if (dont_downcase_last && t - 1 == original_uppercase_position) |
5450 | keybuf[t - 1] = original_uppercase; | |
5451 | ||
07f76a14 JB |
5452 | /* Occasionally we fabricate events, perhaps by expanding something |
5453 | according to function-key-map, or by adding a prefix symbol to a | |
5454 | mouse click in the scroll bar or modeline. In this cases, return | |
5455 | the entire generated key sequence, even if we hit an unbound | |
5456 | prefix or a definition before the end. This means that you will | |
5457 | be able to push back the event properly, and also means that | |
5458 | read-key-sequence will always return a logical unit. | |
5459 | ||
5460 | Better ideas? */ | |
cca310da JB |
5461 | for (; t < mock_input; t++) |
5462 | { | |
a98ea3f9 RS |
5463 | if (echo_keystrokes) |
5464 | echo_char (keybuf[t]); | |
cca310da JB |
5465 | add_command_key (keybuf[t]); |
5466 | } | |
07f76a14 | 5467 | |
284f4730 JB |
5468 | return t; |
5469 | } | |
5470 | ||
a612e298 RS |
5471 | #if 0 /* This doc string is too long for some compilers. |
5472 | This commented-out definition serves for DOC. */ | |
c0a58692 | 5473 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
5474 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
5475 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
5476 | current local and global maps.\n\ | |
5477 | \n\ | |
c0a58692 RS |
5478 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
5479 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
5480 | as a continuation of the previous key.\n\ | |
284f4730 | 5481 | \n\ |
309b0fc8 RS |
5482 | The third (optional) arg DONT-DOWNCASE-LAST, if non-nil, means do not\n\ |
5483 | convert the last event to lower case. (Normally any upper case event\n\ | |
5484 | is converted to lower case if the original event is undefined and the lower\n\ | |
5485 | case equivalent is defined.) A non-nil value is appropriate for reading\n\ | |
5486 | a key sequence to be defined.\n\ | |
5487 | \n\ | |
cb5df6ae JB |
5488 | A C-g typed while in this function is treated like any other character,\n\ |
5489 | and `quit-flag' is not set.\n\ | |
5490 | \n\ | |
5491 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
5492 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
5493 | of the selected window as normal.\n\ | |
ede41463 | 5494 | ""\n\ |
cb5df6ae JB |
5495 | `read-key-sequence' drops unbound button-down events, since you normally\n\ |
5496 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
5497 | or multi-click event is unbound, but the corresponding click event would\n\ |
5498 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 5499 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 5500 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
5501 | \n\ |
5502 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
5503 | lines separating windows, and scroll bars with imaginary keys\n\ |
5504 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
5505 | \n\ |
5506 | If the user switches frames in the middle of a key sequence, the\n\ | |
5507 | frame-switch event is put off until after the current key sequence.\n\ | |
5508 | \n\ | |
5509 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
5510 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 5511 | `function-key-map' for more details.") |
a612e298 RS |
5512 | (prompt, continue_echo) |
5513 | #endif | |
5514 | ||
309b0fc8 | 5515 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 3, 0, |
a612e298 | 5516 | 0) |
309b0fc8 RS |
5517 | (prompt, continue_echo, dont_downcase_last) |
5518 | Lisp_Object prompt, continue_echo, dont_downcase_last; | |
284f4730 JB |
5519 | { |
5520 | Lisp_Object keybuf[30]; | |
5521 | register int i; | |
5522 | struct gcpro gcpro1, gcpro2; | |
5523 | ||
5524 | if (!NILP (prompt)) | |
5525 | CHECK_STRING (prompt, 0); | |
5526 | QUIT; | |
5527 | ||
5528 | bzero (keybuf, sizeof keybuf); | |
5529 | GCPRO1 (keybuf[0]); | |
5530 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
5531 | ||
daa37602 | 5532 | if (NILP (continue_echo)) |
c0a58692 RS |
5533 | this_command_key_count = 0; |
5534 | ||
309b0fc8 RS |
5535 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
5536 | prompt, ! NILP (dont_downcase_last)); | |
284f4730 | 5537 | |
dcc408a0 RS |
5538 | if (i == -1) |
5539 | { | |
5540 | Vquit_flag = Qt; | |
5541 | QUIT; | |
5542 | } | |
284f4730 | 5543 | UNGCPRO; |
86e5706b | 5544 | return make_event_array (i, keybuf); |
284f4730 JB |
5545 | } |
5546 | \f | |
5547 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
5548 | "Execute CMD as an editor command.\n\ | |
5549 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
5550 | Optional second arg RECORD-FLAG non-nil\n\ | |
5551 | means unconditionally put this command in `command-history'.\n\ | |
5552 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
5553 | (cmd, record) | |
5554 | Lisp_Object cmd, record; | |
5555 | { | |
5556 | register Lisp_Object final; | |
5557 | register Lisp_Object tem; | |
5558 | Lisp_Object prefixarg; | |
5559 | struct backtrace backtrace; | |
5560 | extern int debug_on_next_call; | |
5561 | ||
ff4b06d3 KH |
5562 | prefixarg = current_perdisplay->Vprefix_arg; |
5563 | current_perdisplay->Vprefix_arg = Qnil; | |
5564 | current_perdisplay->Vcurrent_prefix_arg = prefixarg; | |
284f4730 JB |
5565 | debug_on_next_call = 0; |
5566 | ||
8c18cbfb | 5567 | if (SYMBOLP (cmd)) |
284f4730 JB |
5568 | { |
5569 | tem = Fget (cmd, Qdisabled); | |
88ce066e | 5570 | if (!NILP (tem) && !NILP (Vrun_hooks)) |
2e894dab | 5571 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
5572 | } |
5573 | ||
5574 | while (1) | |
5575 | { | |
ffd56f97 | 5576 | final = Findirect_function (cmd); |
284f4730 JB |
5577 | |
5578 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
5579 | do_autoload (final, cmd); | |
5580 | else | |
5581 | break; | |
5582 | } | |
5583 | ||
8c18cbfb | 5584 | if (STRINGP (final) || VECTORP (final)) |
284f4730 JB |
5585 | { |
5586 | /* If requested, place the macro in the command history. For | |
5587 | other sorts of commands, call-interactively takes care of | |
5588 | this. */ | |
5589 | if (!NILP (record)) | |
5590 | Vcommand_history | |
5591 | = Fcons (Fcons (Qexecute_kbd_macro, | |
5592 | Fcons (final, Fcons (prefixarg, Qnil))), | |
5593 | Vcommand_history); | |
5594 | ||
5595 | return Fexecute_kbd_macro (final, prefixarg); | |
5596 | } | |
8c18cbfb | 5597 | if (CONSP (final) || SUBRP (final) || COMPILEDP (final)) |
284f4730 JB |
5598 | { |
5599 | backtrace.next = backtrace_list; | |
5600 | backtrace_list = &backtrace; | |
5601 | backtrace.function = &Qcall_interactively; | |
5602 | backtrace.args = &cmd; | |
5603 | backtrace.nargs = 1; | |
5604 | backtrace.evalargs = 0; | |
5605 | ||
5606 | tem = Fcall_interactively (cmd, record); | |
5607 | ||
5608 | backtrace_list = backtrace.next; | |
5609 | return tem; | |
5610 | } | |
5611 | return Qnil; | |
5612 | } | |
5613 | \f | |
284f4730 JB |
5614 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
5615 | 1, 1, "P", | |
5616 | "Read function name, then read its arguments and call it.") | |
5617 | (prefixarg) | |
5618 | Lisp_Object prefixarg; | |
5619 | { | |
5620 | Lisp_Object function; | |
5621 | char buf[40]; | |
5622 | Lisp_Object saved_keys; | |
5623 | struct gcpro gcpro1; | |
5624 | ||
b0f2a7bf KH |
5625 | saved_keys = Fvector (this_command_key_count, |
5626 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5627 | buf[0] = 0; |
5628 | GCPRO1 (saved_keys); | |
5629 | ||
5630 | if (EQ (prefixarg, Qminus)) | |
5631 | strcpy (buf, "- "); | |
5632 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
5633 | strcpy (buf, "C-u "); | |
8c18cbfb | 5634 | else if (CONSP (prefixarg) && INTEGERP (XCONS (prefixarg)->car)) |
284f4730 | 5635 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); |
8c18cbfb | 5636 | else if (INTEGERP (prefixarg)) |
284f4730 JB |
5637 | sprintf (buf, "%d ", XINT (prefixarg)); |
5638 | ||
5639 | /* This isn't strictly correct if execute-extended-command | |
5640 | is bound to anything else. Perhaps it should use | |
5641 | this_command_keys? */ | |
5642 | strcat (buf, "M-x "); | |
5643 | ||
5644 | /* Prompt with buf, and then read a string, completing from and | |
5645 | restricting to the set of all defined commands. Don't provide | |
51763820 | 5646 | any initial input. Save the command read on the extended-command |
03b4122a | 5647 | history list. */ |
284f4730 JB |
5648 | function = Fcompleting_read (build_string (buf), |
5649 | Vobarray, Qcommandp, | |
03b4122a | 5650 | Qt, Qnil, Qextended_command_history); |
284f4730 | 5651 | |
1113d9db JB |
5652 | /* Set this_command_keys to the concatenation of saved_keys and |
5653 | function, followed by a RET. */ | |
284f4730 | 5654 | { |
1113d9db | 5655 | struct Lisp_String *str; |
b0f2a7bf | 5656 | Lisp_Object *keys; |
284f4730 JB |
5657 | int i; |
5658 | Lisp_Object tem; | |
5659 | ||
1113d9db JB |
5660 | this_command_key_count = 0; |
5661 | ||
b0f2a7bf KH |
5662 | keys = XVECTOR (saved_keys)->contents; |
5663 | for (i = 0; i < XVECTOR (saved_keys)->size; i++) | |
5664 | add_command_key (keys[i]); | |
1113d9db JB |
5665 | |
5666 | str = XSTRING (function); | |
5667 | for (i = 0; i < str->size; i++) | |
5668 | { | |
bb9e9bed | 5669 | XSETFASTINT (tem, str->data[i]); |
1113d9db JB |
5670 | add_command_key (tem); |
5671 | } | |
5672 | ||
bb9e9bed | 5673 | XSETFASTINT (tem, '\015'); |
1113d9db | 5674 | add_command_key (tem); |
284f4730 JB |
5675 | } |
5676 | ||
5677 | UNGCPRO; | |
5678 | ||
0a7f1fc0 | 5679 | function = Fintern (function, Qnil); |
ff4b06d3 | 5680 | current_perdisplay->Vprefix_arg = prefixarg; |
284f4730 JB |
5681 | this_command = function; |
5682 | ||
5683 | return Fcommand_execute (function, Qt); | |
5684 | } | |
5685 | \f | |
5686 | ||
5687 | detect_input_pending () | |
5688 | { | |
5689 | if (!input_pending) | |
5690 | get_input_pending (&input_pending); | |
5691 | ||
5692 | return input_pending; | |
5693 | } | |
5694 | ||
ffd56f97 JB |
5695 | /* This is called in some cases before a possible quit. |
5696 | It cases the next call to detect_input_pending to recompute input_pending. | |
5697 | So calling this function unnecessarily can't do any harm. */ | |
5698 | clear_input_pending () | |
5699 | { | |
5700 | input_pending = 0; | |
5701 | } | |
5702 | ||
284f4730 JB |
5703 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
5704 | "T if command input is currently available with no waiting.\n\ | |
5705 | Actually, the value is nil only if we can be sure that no input is available.") | |
5706 | () | |
5707 | { | |
24597608 | 5708 | if (!NILP (Vunread_command_events) || unread_command_char != -1) |
284f4730 JB |
5709 | return (Qt); |
5710 | ||
5711 | return detect_input_pending () ? Qt : Qnil; | |
5712 | } | |
5713 | ||
5714 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 5715 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
5716 | () |
5717 | { | |
5160df46 | 5718 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
5719 | Lisp_Object val; |
5720 | ||
5721 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 5722 | return Fvector (total_keys, keys); |
284f4730 JB |
5723 | else |
5724 | { | |
5160df46 JB |
5725 | val = Fvector (NUM_RECENT_KEYS, keys); |
5726 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
5727 | XVECTOR (val)->contents, |
5728 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 5729 | bcopy (keys, |
284f4730 JB |
5730 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
5731 | recent_keys_index * sizeof (Lisp_Object)); | |
5732 | return val; | |
5733 | } | |
5734 | } | |
5735 | ||
5736 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
5737 | "Return the key sequence that invoked this command.\n\ |
5738 | The value is a string or a vector.") | |
284f4730 JB |
5739 | () |
5740 | { | |
86e5706b RS |
5741 | return make_event_array (this_command_key_count, |
5742 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
5743 | } |
5744 | ||
5745 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
5746 | "Return the current depth in recursive edits.") | |
5747 | () | |
5748 | { | |
5749 | Lisp_Object temp; | |
bb9e9bed | 5750 | XSETFASTINT (temp, command_loop_level + minibuf_level); |
284f4730 JB |
5751 | return temp; |
5752 | } | |
5753 | ||
5754 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
5755 | "FOpen dribble file: ", | |
9b2471df RS |
5756 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
5757 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
5758 | (file) |
5759 | Lisp_Object file; | |
5760 | { | |
5761 | if (NILP (file)) | |
5762 | { | |
d0011c11 RS |
5763 | if (dribble) |
5764 | { | |
5765 | fclose (dribble); | |
5766 | dribble = 0; | |
5767 | } | |
284f4730 JB |
5768 | } |
5769 | else | |
5770 | { | |
5771 | file = Fexpand_file_name (file, Qnil); | |
5772 | dribble = fopen (XSTRING (file)->data, "w"); | |
5773 | } | |
5774 | return Qnil; | |
5775 | } | |
5776 | ||
5777 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
5778 | "Discard the contents of the terminal input buffer.\n\ | |
5779 | Also cancel any kbd macro being defined.") | |
5780 | () | |
5781 | { | |
5782 | defining_kbd_macro = 0; | |
5783 | update_mode_lines++; | |
5784 | ||
24597608 | 5785 | Vunread_command_events = Qnil; |
86e5706b | 5786 | unread_command_char = -1; |
284f4730 JB |
5787 | |
5788 | discard_tty_input (); | |
5789 | ||
ff0b5f4c JB |
5790 | /* Without the cast, GCC complains that this assignment loses the |
5791 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
5792 | with that? */ | |
beecf6a1 KH |
5793 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; |
5794 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
284f4730 JB |
5795 | input_pending = 0; |
5796 | ||
5797 | return Qnil; | |
5798 | } | |
5799 | \f | |
5800 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
5801 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
8026024c KH |
5802 | If `cannot-suspend' is non-nil, or if the system doesn't support job\n\ |
5803 | control, run a subshell instead.\n\n\ | |
284f4730 | 5804 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ |
b7d2ebbf RS |
5805 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
5806 | \n\ | |
bbdc2092 RS |
5807 | Before suspending, run the normal hook `suspend-hook'.\n\ |
5808 | After resumption run the normal hook `suspend-resume-hook'.\n\ | |
284f4730 JB |
5809 | \n\ |
5810 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 5811 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
5812 | (stuffstring) |
5813 | Lisp_Object stuffstring; | |
5814 | { | |
3a69360c | 5815 | Lisp_Object tem; |
284f4730 JB |
5816 | int count = specpdl_ptr - specpdl; |
5817 | int old_height, old_width; | |
5818 | int width, height; | |
b7d2ebbf | 5819 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
5820 | extern init_sys_modes (); |
5821 | ||
5822 | if (!NILP (stuffstring)) | |
5823 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 5824 | |
1e95ed28 JB |
5825 | /* Run the functions in suspend-hook. */ |
5826 | if (!NILP (Vrun_hooks)) | |
5827 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 5828 | |
b7d2ebbf | 5829 | GCPRO1 (stuffstring); |
ff11dfa1 | 5830 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
5831 | reset_sys_modes (); |
5832 | /* sys_suspend can get an error if it tries to fork a subshell | |
5833 | and the system resources aren't available for that. */ | |
5834 | record_unwind_protect (init_sys_modes, 0); | |
5835 | stuff_buffered_input (stuffstring); | |
8026024c KH |
5836 | if (cannot_suspend) |
5837 | sys_subshell (); | |
5838 | else | |
5839 | sys_suspend (); | |
284f4730 JB |
5840 | unbind_to (count, Qnil); |
5841 | ||
5842 | /* Check if terminal/window size has changed. | |
5843 | Note that this is not useful when we are running directly | |
5844 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 5845 | get_frame_size (&width, &height); |
284f4730 | 5846 | if (width != old_width || height != old_height) |
f5ea6163 | 5847 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 5848 | |
1e95ed28 | 5849 | /* Run suspend-resume-hook. */ |
284f4730 JB |
5850 | if (!NILP (Vrun_hooks)) |
5851 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
5852 | ||
5853 | UNGCPRO; | |
5854 | return Qnil; | |
5855 | } | |
5856 | ||
5857 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 5858 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
5859 | |
5860 | stuff_buffered_input (stuffstring) | |
5861 | Lisp_Object stuffstring; | |
5862 | { | |
284f4730 JB |
5863 | /* stuff_char works only in BSD, versions 4.2 and up. */ |
5864 | #ifdef BSD | |
5865 | #ifndef BSD4_1 | |
612b78ef | 5866 | register unsigned char *p; |
612b78ef | 5867 | |
8c18cbfb | 5868 | if (STRINGP (stuffstring)) |
284f4730 JB |
5869 | { |
5870 | register int count; | |
5871 | ||
5872 | p = XSTRING (stuffstring)->data; | |
5873 | count = XSTRING (stuffstring)->size; | |
5874 | while (count-- > 0) | |
5875 | stuff_char (*p++); | |
5876 | stuff_char ('\n'); | |
5877 | } | |
5878 | /* Anything we have read ahead, put back for the shell to read. */ | |
beecf6a1 KH |
5879 | /* ?? What should this do when we have multiple keyboards?? |
5880 | Should we ignore anything that was typed in at the "wrong" display? */ | |
5881 | for (; kbd_fetch_ptr != kbd_store_ptr; kbd_fetch_ptr++) | |
284f4730 | 5882 | { |
beecf6a1 KH |
5883 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) |
5884 | kbd_fetch_ptr = kbd_buffer; | |
5885 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
5886 | stuff_char (kbd_fetch_ptr->code); | |
5887 | kbd_fetch_ptr->kind = no_event; | |
5888 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr | |
5889 | - kbd_buffer] | |
7b4aedb9 | 5890 | = Qnil); |
284f4730 JB |
5891 | } |
5892 | input_pending = 0; | |
5893 | #endif | |
5894 | #endif /* BSD and not BSD4_1 */ | |
5895 | } | |
5896 | \f | |
ffd56f97 JB |
5897 | set_waiting_for_input (time_to_clear) |
5898 | EMACS_TIME *time_to_clear; | |
284f4730 | 5899 | { |
ffd56f97 | 5900 | input_available_clear_time = time_to_clear; |
284f4730 JB |
5901 | |
5902 | /* Tell interrupt_signal to throw back to read_char, */ | |
5903 | waiting_for_input = 1; | |
5904 | ||
5905 | /* If interrupt_signal was called before and buffered a C-g, | |
5906 | make it run again now, to avoid timing error. */ | |
5907 | if (!NILP (Vquit_flag)) | |
5908 | quit_throw_to_read_char (); | |
284f4730 JB |
5909 | } |
5910 | ||
5911 | clear_waiting_for_input () | |
5912 | { | |
5913 | /* Tell interrupt_signal not to throw back to read_char, */ | |
5914 | waiting_for_input = 0; | |
ffd56f97 | 5915 | input_available_clear_time = 0; |
284f4730 JB |
5916 | } |
5917 | ||
5918 | /* This routine is called at interrupt level in response to C-G. | |
5919 | If interrupt_input, this is the handler for SIGINT. | |
5920 | Otherwise, it is called from kbd_buffer_store_event, | |
5921 | in handling SIGIO or SIGTINT. | |
5922 | ||
5923 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
5924 | immediately throw back to read_char. | |
5925 | ||
5926 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
5927 | This causes eval to throw, when it gets a chance. | |
5928 | If quit-flag is already non-nil, it stops the job right away. */ | |
5929 | ||
5930 | SIGTYPE | |
91c049d4 RS |
5931 | interrupt_signal (signalnum) /* If we don't have an argument, */ |
5932 | int signalnum; /* some compilers complain in signal calls. */ | |
284f4730 JB |
5933 | { |
5934 | char c; | |
5935 | /* Must preserve main program's value of errno. */ | |
5936 | int old_errno = errno; | |
284f4730 JB |
5937 | |
5938 | #ifdef USG | |
7a80a6f6 RS |
5939 | if (!read_socket_hook && NILP (Vwindow_system)) |
5940 | { | |
5941 | /* USG systems forget handlers when they are used; | |
5942 | must reestablish each time */ | |
5943 | signal (SIGINT, interrupt_signal); | |
5944 | signal (SIGQUIT, interrupt_signal); | |
5945 | } | |
284f4730 JB |
5946 | #endif /* USG */ |
5947 | ||
5948 | cancel_echoing (); | |
5949 | ||
d5045cf9 | 5950 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
5951 | { |
5952 | fflush (stdout); | |
5953 | reset_sys_modes (); | |
5954 | sigfree (); | |
5955 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
5956 | /* | |
5957 | * On systems which can suspend the current process and return to the original | |
5958 | * shell, this command causes the user to end up back at the shell. | |
5959 | * The "Auto-save" and "Abort" questions are not asked until | |
5960 | * the user elects to return to emacs, at which point he can save the current | |
5961 | * job and either dump core or continue. | |
5962 | */ | |
5963 | sys_suspend (); | |
5964 | #else | |
5965 | #ifdef VMS | |
5966 | if (sys_suspend () == -1) | |
5967 | { | |
5968 | printf ("Not running as a subprocess;\n"); | |
5969 | printf ("you can continue or abort.\n"); | |
5970 | } | |
5971 | #else /* not VMS */ | |
5972 | /* Perhaps should really fork an inferior shell? | |
5973 | But that would not provide any way to get back | |
5974 | to the original shell, ever. */ | |
5975 | printf ("No support for stopping a process on this operating system;\n"); | |
5976 | printf ("you can continue or abort.\n"); | |
5977 | #endif /* not VMS */ | |
5978 | #endif /* not SIGTSTP */ | |
80e4aa30 RS |
5979 | #ifdef MSDOS |
5980 | /* We must remain inside the screen area when the internal terminal | |
5981 | is used. Note that [Enter] is not echoed by dos. */ | |
5982 | cursor_to (0, 0); | |
5983 | #endif | |
284f4730 JB |
5984 | printf ("Auto-save? (y or n) "); |
5985 | fflush (stdout); | |
5986 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
5987 | { |
5988 | Fdo_auto_save (Qt, Qnil); | |
80e4aa30 RS |
5989 | #ifdef MSDOS |
5990 | printf ("\r\nAuto-save done"); | |
5991 | #else /* not MSDOS */ | |
9fd7d808 | 5992 | printf ("Auto-save done\n"); |
80e4aa30 | 5993 | #endif /* not MSDOS */ |
9fd7d808 | 5994 | } |
284f4730 | 5995 | while (c != '\n') c = getchar (); |
80e4aa30 RS |
5996 | #ifdef MSDOS |
5997 | printf ("\r\nAbort? (y or n) "); | |
5998 | #else /* not MSDOS */ | |
284f4730 JB |
5999 | #ifdef VMS |
6000 | printf ("Abort (and enter debugger)? (y or n) "); | |
6001 | #else /* not VMS */ | |
6002 | printf ("Abort (and dump core)? (y or n) "); | |
6003 | #endif /* not VMS */ | |
80e4aa30 | 6004 | #endif /* not MSDOS */ |
284f4730 JB |
6005 | fflush (stdout); |
6006 | if (((c = getchar ()) & ~040) == 'Y') | |
6007 | abort (); | |
6008 | while (c != '\n') c = getchar (); | |
80e4aa30 RS |
6009 | #ifdef MSDOS |
6010 | printf ("\r\nContinuing...\r\n"); | |
6011 | #else /* not MSDOS */ | |
284f4730 | 6012 | printf ("Continuing...\n"); |
80e4aa30 | 6013 | #endif /* not MSDOS */ |
284f4730 JB |
6014 | fflush (stdout); |
6015 | init_sys_modes (); | |
6016 | } | |
6017 | else | |
6018 | { | |
6019 | /* If executing a function that wants to be interrupted out of | |
6020 | and the user has not deferred quitting by binding `inhibit-quit' | |
6021 | then quit right away. */ | |
6022 | if (immediate_quit && NILP (Vinhibit_quit)) | |
6023 | { | |
6024 | immediate_quit = 0; | |
6025 | sigfree (); | |
6026 | Fsignal (Qquit, Qnil); | |
6027 | } | |
6028 | else | |
6029 | /* Else request quit when it's safe */ | |
6030 | Vquit_flag = Qt; | |
6031 | } | |
6032 | ||
6033 | if (waiting_for_input && !echoing) | |
6034 | quit_throw_to_read_char (); | |
6035 | ||
6036 | errno = old_errno; | |
6037 | } | |
6038 | ||
6039 | /* Handle a C-g by making read_char return C-g. */ | |
6040 | ||
6041 | quit_throw_to_read_char () | |
6042 | { | |
6043 | quit_error_check (); | |
6044 | sigfree (); | |
6045 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 6046 | clear_waiting_for_input (); |
284f4730 JB |
6047 | input_pending = 0; |
6048 | ||
24597608 | 6049 | Vunread_command_events = Qnil; |
86e5706b | 6050 | unread_command_char = -1; |
284f4730 | 6051 | |
e6b01c14 JB |
6052 | #ifdef POLL_FOR_INPUT |
6053 | /* May be > 1 if in recursive minibuffer. */ | |
6054 | if (poll_suppress_count == 0) | |
6055 | abort (); | |
6056 | #endif | |
0dfcc832 | 6057 | #ifdef MULTI_FRAME |
40f239ee KH |
6058 | { |
6059 | Lisp_Object frame; | |
6060 | ||
6061 | if (!current_perdisplay) | |
6062 | abort (); | |
6063 | frame = current_perdisplay->internal_last_event_frame; | |
6064 | if (FRAMEP (frame) && XFRAME (frame) != selected_frame) | |
6065 | Fhandle_switch_frame (make_lispy_switch_frame (frame)); | |
6066 | } | |
0dfcc832 | 6067 | #endif |
e6b01c14 | 6068 | |
284f4730 JB |
6069 | _longjmp (getcjmp, 1); |
6070 | } | |
6071 | \f | |
6072 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
6073 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
6074 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
6075 | nil means use CBREAK mode.\n\ | |
6076 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 6077 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
6078 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
6079 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
6080 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
6081 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
6082 | See also `current-input-mode'.") | |
284f4730 JB |
6083 | (interrupt, flow, meta, quit) |
6084 | Lisp_Object interrupt, flow, meta, quit; | |
6085 | { | |
6086 | if (!NILP (quit) | |
8c18cbfb | 6087 | && (!INTEGERP (quit) || XINT (quit) < 0 || XINT (quit) > 0400)) |
34f04431 RS |
6088 | error ("set-input-mode: QUIT must be an ASCII character"); |
6089 | ||
6090 | #ifdef POLL_FOR_INPUT | |
6091 | stop_polling (); | |
6092 | #endif | |
284f4730 JB |
6093 | |
6094 | reset_sys_modes (); | |
6095 | #ifdef SIGIO | |
6096 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
6097 | #ifdef NO_SOCK_SIGIO | |
6098 | if (read_socket_hook) | |
6099 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
6100 | else | |
6101 | #endif /* NO_SOCK_SIGIO */ | |
6102 | interrupt_input = !NILP (interrupt); | |
6103 | #else /* not SIGIO */ | |
6104 | interrupt_input = 0; | |
6105 | #endif /* not SIGIO */ | |
6106 | /* Our VMS input only works by interrupts, as of now. */ | |
6107 | #ifdef VMS | |
6108 | interrupt_input = 1; | |
6109 | #endif | |
6110 | flow_control = !NILP (flow); | |
b04904fb RS |
6111 | if (NILP (meta)) |
6112 | meta_key = 0; | |
6113 | else if (EQ (meta, Qt)) | |
6114 | meta_key = 1; | |
6115 | else | |
6116 | meta_key = 2; | |
284f4730 JB |
6117 | if (!NILP (quit)) |
6118 | /* Don't let this value be out of range. */ | |
6119 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
6120 | ||
6121 | init_sys_modes (); | |
34f04431 RS |
6122 | |
6123 | #ifdef POLL_FOR_INPUT | |
6124 | poll_suppress_count = 1; | |
6125 | start_polling (); | |
6126 | #endif | |
284f4730 JB |
6127 | return Qnil; |
6128 | } | |
80645119 JB |
6129 | |
6130 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
6131 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
6132 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
6133 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
6134 | nil, Emacs is using CBREAK mode.\n\ | |
6135 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
6136 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
6137 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
6138 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
6139 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
6140 | all 8 bits as the character code.\n\ | |
80645119 JB |
6141 | QUIT is the character Emacs currently uses to quit.\n\ |
6142 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 6143 | `set-input-mode'.") |
80645119 JB |
6144 | () |
6145 | { | |
6146 | Lisp_Object val[4]; | |
6147 | ||
6148 | val[0] = interrupt_input ? Qt : Qnil; | |
6149 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 6150 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
bb9e9bed | 6151 | XSETFASTINT (val[3], quit_char); |
80645119 | 6152 | |
bf673a7a | 6153 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
6154 | } |
6155 | ||
284f4730 | 6156 | \f |
6c6083a9 KH |
6157 | /* |
6158 | * Set up a perdisplay object with reasonable initial values. | |
6159 | */ | |
6160 | void | |
6161 | init_perdisplay (perd) | |
6162 | PERDISPLAY *perd; | |
6163 | { | |
6164 | perd->Vprefix_arg = Qnil; | |
6165 | perd->Vcurrent_prefix_arg = Qnil; | |
40f239ee KH |
6166 | #ifdef MULTI_FRAME |
6167 | /* This means that command_loop_1 won't try to select anything the first | |
6168 | time through. */ | |
6169 | perd->internal_last_event_frame = Qnil; | |
6170 | #endif | |
beecf6a1 | 6171 | perd->kbd_queue = Qnil; |
40f239ee | 6172 | perd->Vlast_event_frame = Qnil; |
267de7a1 KH |
6173 | perd->immediate_echo = 0; |
6174 | perd->echoptr = perd->echobuf; | |
6175 | perd->echo_after_prompt = -1; | |
6c6083a9 KH |
6176 | } |
6177 | ||
6178 | /* | |
6179 | * Destroy the contents of a perdisplay object, but not the object itself. | |
6180 | * We use this just before deleteing it, or if we're going to initialize | |
6181 | * it a second time. | |
6182 | */ | |
6183 | void | |
6184 | wipe_perdisplay (perd) | |
6185 | PERDISPLAY *perd; | |
6186 | { | |
beecf6a1 KH |
6187 | /* Free anything that was malloc'd in init_perdisplay. */ |
6188 | /* Placeholder -- currently no action required. */ | |
6c6083a9 KH |
6189 | } |
6190 | ||
284f4730 JB |
6191 | init_keyboard () |
6192 | { | |
284f4730 JB |
6193 | /* This is correct before outermost invocation of the editor loop */ |
6194 | command_loop_level = -1; | |
6195 | immediate_quit = 0; | |
6196 | quit_char = Ctl ('g'); | |
24597608 | 6197 | Vunread_command_events = Qnil; |
86e5706b | 6198 | unread_command_char = -1; |
284f4730 | 6199 | total_keys = 0; |
9deb415a | 6200 | recent_keys_index = 0; |
beecf6a1 KH |
6201 | kbd_fetch_ptr = kbd_buffer; |
6202 | kbd_store_ptr = kbd_buffer; | |
6203 | kbd_buffer_frame_or_window | |
6204 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
2eb6bfbe | 6205 | #ifdef HAVE_MOUSE |
a9d77f1f | 6206 | do_mouse_tracking = Qnil; |
2eb6bfbe | 6207 | #endif |
284f4730 JB |
6208 | input_pending = 0; |
6209 | ||
6c6083a9 | 6210 | #ifndef MULTI_PERDISPLAY |
4bb994d1 | 6211 | if (initialized) |
6c6083a9 KH |
6212 | wipe_perdisplay (&the_only_perdisplay); |
6213 | init_perdisplay (&the_only_perdisplay); | |
6214 | #endif | |
07d2b8de | 6215 | |
beecf6a1 KH |
6216 | if (initialized) |
6217 | Ffillarray (kbd_buffer_frame_or_window, Qnil); | |
6218 | ||
6219 | kbd_buffer_frame_or_window | |
6220 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
7a80a6f6 | 6221 | if (!noninteractive && !read_socket_hook && NILP (Vwindow_system)) |
284f4730 JB |
6222 | { |
6223 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 6224 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
6225 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
6226 | SIGQUIT and we can't tell which one it will give us. */ | |
6227 | signal (SIGQUIT, interrupt_signal); | |
6228 | #endif /* HAVE_TERMIO */ | |
7a80a6f6 | 6229 | } |
284f4730 JB |
6230 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ |
6231 | #ifdef SIGIO | |
7a80a6f6 RS |
6232 | if (!noninteractive) |
6233 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 6234 | #endif /* SIGIO */ |
284f4730 JB |
6235 | |
6236 | /* Use interrupt input by default, if it works and noninterrupt input | |
6237 | has deficiencies. */ | |
6238 | ||
6239 | #ifdef INTERRUPT_INPUT | |
6240 | interrupt_input = 1; | |
6241 | #else | |
6242 | interrupt_input = 0; | |
6243 | #endif | |
6244 | ||
6245 | /* Our VMS input only works by interrupts, as of now. */ | |
6246 | #ifdef VMS | |
6247 | interrupt_input = 1; | |
6248 | #endif | |
6249 | ||
6250 | sigfree (); | |
6251 | dribble = 0; | |
6252 | ||
6253 | if (keyboard_init_hook) | |
6254 | (*keyboard_init_hook) (); | |
6255 | ||
6256 | #ifdef POLL_FOR_INPUT | |
6257 | poll_suppress_count = 1; | |
6258 | start_polling (); | |
6259 | #endif | |
6260 | } | |
6261 | ||
6262 | /* This type's only use is in syms_of_keyboard, to initialize the | |
6263 | event header symbols and put properties on them. */ | |
6264 | struct event_head { | |
6265 | Lisp_Object *var; | |
6266 | char *name; | |
6267 | Lisp_Object *kind; | |
6268 | }; | |
6269 | ||
6270 | struct event_head head_table[] = { | |
7b4aedb9 | 6271 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 6272 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 6273 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
bbdc2092 | 6274 | &Qdelete_frame, "delete-frame", &Qdelete_frame, |
af17bd2b KH |
6275 | &Qiconify_frame, "iconify-frame", &Qiconify_frame, |
6276 | &Qmake_frame_visible, "make-frame-visible", &Qmake_frame_visible, | |
284f4730 JB |
6277 | }; |
6278 | ||
6279 | syms_of_keyboard () | |
6280 | { | |
2e894dab RS |
6281 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
6282 | staticpro (&Qdisabled_command_hook); | |
6283 | ||
284f4730 JB |
6284 | Qself_insert_command = intern ("self-insert-command"); |
6285 | staticpro (&Qself_insert_command); | |
6286 | ||
6287 | Qforward_char = intern ("forward-char"); | |
6288 | staticpro (&Qforward_char); | |
6289 | ||
6290 | Qbackward_char = intern ("backward-char"); | |
6291 | staticpro (&Qbackward_char); | |
6292 | ||
6293 | Qdisabled = intern ("disabled"); | |
6294 | staticpro (&Qdisabled); | |
6295 | ||
e58aa385 RS |
6296 | Qundefined = intern ("undefined"); |
6297 | staticpro (&Qundefined); | |
6298 | ||
86e5706b RS |
6299 | Qpre_command_hook = intern ("pre-command-hook"); |
6300 | staticpro (&Qpre_command_hook); | |
6301 | ||
6302 | Qpost_command_hook = intern ("post-command-hook"); | |
6303 | staticpro (&Qpost_command_hook); | |
6304 | ||
3ef14e46 RS |
6305 | Qdeferred_action_function = intern ("deferred-action-function"); |
6306 | staticpro (&Qdeferred_action_function); | |
6307 | ||
40932d1a RS |
6308 | Qcommand_hook_internal = intern ("command-hook-internal"); |
6309 | staticpro (&Qcommand_hook_internal); | |
6310 | ||
284f4730 JB |
6311 | Qfunction_key = intern ("function-key"); |
6312 | staticpro (&Qfunction_key); | |
13b5e56c | 6313 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 6314 | staticpro (&Qmouse_click); |
284f4730 | 6315 | |
598a9fa7 JB |
6316 | Qmenu_enable = intern ("menu-enable"); |
6317 | staticpro (&Qmenu_enable); | |
6318 | ||
284f4730 JB |
6319 | Qmode_line = intern ("mode-line"); |
6320 | staticpro (&Qmode_line); | |
e5d77022 JB |
6321 | Qvertical_line = intern ("vertical-line"); |
6322 | staticpro (&Qvertical_line); | |
3c370943 JB |
6323 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
6324 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
6325 | Qmenu_bar = intern ("menu-bar"); |
6326 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
6327 | |
6328 | Qabove_handle = intern ("above-handle"); | |
6329 | staticpro (&Qabove_handle); | |
6330 | Qhandle = intern ("handle"); | |
6331 | staticpro (&Qhandle); | |
6332 | Qbelow_handle = intern ("below-handle"); | |
6333 | staticpro (&Qbelow_handle); | |
284f4730 | 6334 | |
cd21b839 | 6335 | Qevent_kind = intern ("event-kind"); |
284f4730 | 6336 | staticpro (&Qevent_kind); |
88cb0656 JB |
6337 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
6338 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
6339 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
6340 | staticpro (&Qevent_symbol_element_mask); | |
6341 | Qmodifier_cache = intern ("modifier-cache"); | |
6342 | staticpro (&Qmodifier_cache); | |
284f4730 | 6343 | |
48e416d4 RS |
6344 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
6345 | staticpro (&Qrecompute_lucid_menubar); | |
6346 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
6347 | staticpro (&Qactivate_menubar_hook); | |
6348 | ||
f4eef8b4 RS |
6349 | Qpolling_period = intern ("polling-period"); |
6350 | staticpro (&Qpolling_period); | |
6351 | ||
284f4730 JB |
6352 | { |
6353 | struct event_head *p; | |
6354 | ||
6355 | for (p = head_table; | |
6356 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
6357 | p++) | |
6358 | { | |
6359 | *p->var = intern (p->name); | |
6360 | staticpro (p->var); | |
6361 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 6362 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
6363 | } |
6364 | } | |
6365 | ||
7b4aedb9 JB |
6366 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
6367 | staticpro (&button_down_location); | |
88cb0656 JB |
6368 | |
6369 | { | |
6370 | int i; | |
6371 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
6372 | ||
6373 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
6374 | for (i = 0; i < len; i++) | |
86e5706b RS |
6375 | if (modifier_names[i]) |
6376 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
6377 | staticpro (&modifier_symbols); |
6378 | } | |
6379 | ||
9deb415a JB |
6380 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
6381 | staticpro (&recent_keys); | |
6382 | ||
6569cc8d | 6383 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 6384 | staticpro (&this_command_keys); |
6569cc8d | 6385 | |
03b4122a BF |
6386 | Qextended_command_history = intern ("extended-command-history"); |
6387 | Fset (Qextended_command_history, Qnil); | |
6388 | staticpro (&Qextended_command_history); | |
6389 | ||
beecf6a1 KH |
6390 | kbd_buffer_frame_or_window |
6391 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
6392 | staticpro (&kbd_buffer_frame_or_window); | |
6393 | ||
24597608 RS |
6394 | accent_key_syms = Qnil; |
6395 | staticpro (&accent_key_syms); | |
6396 | ||
284f4730 JB |
6397 | func_key_syms = Qnil; |
6398 | staticpro (&func_key_syms); | |
6399 | ||
4e0e7d8e RS |
6400 | system_key_syms = Qnil; |
6401 | staticpro (&system_key_syms); | |
6402 | ||
284f4730 JB |
6403 | mouse_syms = Qnil; |
6404 | staticpro (&mouse_syms); | |
6405 | ||
cd21b839 JB |
6406 | unread_switch_frame = Qnil; |
6407 | staticpro (&unread_switch_frame); | |
6408 | ||
284f4730 JB |
6409 | defsubr (&Sread_key_sequence); |
6410 | defsubr (&Srecursive_edit); | |
2eb6bfbe | 6411 | #ifdef HAVE_MOUSE |
284f4730 | 6412 | defsubr (&Strack_mouse); |
2eb6bfbe | 6413 | #endif |
284f4730 JB |
6414 | defsubr (&Sinput_pending_p); |
6415 | defsubr (&Scommand_execute); | |
6416 | defsubr (&Srecent_keys); | |
6417 | defsubr (&Sthis_command_keys); | |
6418 | defsubr (&Ssuspend_emacs); | |
6419 | defsubr (&Sabort_recursive_edit); | |
6420 | defsubr (&Sexit_recursive_edit); | |
6421 | defsubr (&Srecursion_depth); | |
6422 | defsubr (&Stop_level); | |
6423 | defsubr (&Sdiscard_input); | |
6424 | defsubr (&Sopen_dribble_file); | |
6425 | defsubr (&Sset_input_mode); | |
80645119 | 6426 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
6427 | defsubr (&Sexecute_extended_command); |
6428 | ||
284f4730 | 6429 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
6430 | "Last input event that was part of a command."); |
6431 | ||
186cf719 | 6432 | DEFVAR_LISP_NOPRO ("last-command-event", &last_command_char, |
86e5706b | 6433 | "Last input event that was part of a command."); |
284f4730 | 6434 | |
7d6de002 | 6435 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 6436 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
6437 | Mouse menus give back keys that don't look like mouse events;\n\ |
6438 | this variable holds the actual mouse event that led to the menu,\n\ | |
6439 | so that you can determine whether the command was run by mouse or not."); | |
6440 | ||
284f4730 | 6441 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
6442 | "Last input event."); |
6443 | ||
186cf719 | 6444 | DEFVAR_LISP_NOPRO ("last-input-event", &last_input_char, |
86e5706b | 6445 | "Last input event."); |
284f4730 | 6446 | |
24597608 | 6447 | DEFVAR_LISP ("unread-command-events", &Vunread_command_events, |
1c07d0a6 | 6448 | "List of objects to be read as next command input events."); |
284f4730 | 6449 | |
86e5706b RS |
6450 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
6451 | "If not -1, an object to be read as next command input event."); | |
6452 | ||
284f4730 JB |
6453 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
6454 | "Meta-prefix character code. Meta-foo as command input\n\ | |
6455 | turns into this character followed by foo."); | |
18cd2eeb | 6456 | XSETINT (meta_prefix_char, 033); |
284f4730 JB |
6457 | |
6458 | DEFVAR_LISP ("last-command", &last_command, | |
6459 | "The last command executed. Normally a symbol with a function definition,\n\ | |
6460 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
18f29056 RS |
6461 | `this-command' was set to by that command.\n\ |
6462 | \n\ | |
6463 | The value `mode-exit' is special; it means that the previous command\n\ | |
6464 | read an event that told it to exit, and it did so and unread that event.\n\ | |
6465 | In other words, the present command is the event that made the previous\n\ | |
6466 | command exit.\n\ | |
6467 | \n\ | |
6468 | The value `kill-region' is special; it means that the previous command\n\ | |
6469 | was a kill command."); | |
284f4730 JB |
6470 | last_command = Qnil; |
6471 | ||
6472 | DEFVAR_LISP ("this-command", &this_command, | |
6473 | "The command now being executed.\n\ | |
6474 | The command can set this variable; whatever is put here\n\ | |
6475 | will be in `last-command' during the following command."); | |
6476 | this_command = Qnil; | |
6477 | ||
6478 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
6479 | "*Number of keyboard input characters between auto-saves.\n\ | |
6480 | Zero means disable autosaving due to number of characters typed."); | |
6481 | auto_save_interval = 300; | |
6482 | ||
6483 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
6484 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
6485 | Zero or nil means disable auto-saving due to idleness.\n\ |
6486 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 6487 | Emacs also does a garbage collection if that seems to be warranted."); |
bb9e9bed | 6488 | XSETFASTINT (Vauto_save_timeout, 30); |
284f4730 JB |
6489 | |
6490 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
6491 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
6492 | echo_keystrokes = 1; | |
6493 | ||
6494 | DEFVAR_INT ("polling-period", &polling_period, | |
6495 | "*Interval between polling for input during Lisp execution.\n\ | |
6496 | The reason for polling is to make C-g work to stop a running program.\n\ | |
6497 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
6498 | Polling is automatically disabled in all other cases."); | |
6499 | polling_period = 2; | |
6500 | ||
564dc952 | 6501 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 6502 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
6503 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
6504 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 6505 | by position only."); |
aab06933 | 6506 | Vdouble_click_time = make_number (500); |
fbcd35bd | 6507 | |
03361bcc RS |
6508 | DEFVAR_BOOL ("inhibit-local-menu-bar-menus", &inhibit_local_menu_bar_menus, |
6509 | "*Non-nil means inhibit local map menu bar menus."); | |
6510 | inhibit_local_menu_bar_menus = 0; | |
6511 | ||
284f4730 | 6512 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
e0dff5f6 | 6513 | "Number of complete keys read from the keyboard so far."); |
284f4730 JB |
6514 | num_input_keys = 0; |
6515 | ||
7e85b935 | 6516 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
6517 | "Character to recognize as meaning Help.\n\ |
6518 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
6519 | If the value of `help-form' is nil, this char can be read normally."); | |
18cd2eeb | 6520 | XSETINT (Vhelp_char, Ctl ('H')); |
284f4730 JB |
6521 | |
6522 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 6523 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
6524 | If the form returns a string, that string is displayed.\n\ |
6525 | If `help-form' is nil, the help char is not recognized."); | |
6526 | Vhelp_form = Qnil; | |
6527 | ||
7e85b935 RS |
6528 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
6529 | "Command to run when `help-char' character follows a prefix key.\n\ | |
6530 | This command is used only when there is no actual binding\n\ | |
6531 | for that character after that prefix key."); | |
6532 | Vprefix_help_command = Qnil; | |
6533 | ||
284f4730 JB |
6534 | DEFVAR_LISP ("top-level", &Vtop_level, |
6535 | "Form to evaluate when Emacs starts up.\n\ | |
6536 | Useful to set before you dump a modified Emacs."); | |
6537 | Vtop_level = Qnil; | |
6538 | ||
6539 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
6540 | "String used as translate table for keyboard input, or nil.\n\ | |
6541 | Each character is looked up in this string and the contents used instead.\n\ | |
6542 | If string is of length N, character codes N and up are untranslated."); | |
6543 | Vkeyboard_translate_table = Qnil; | |
6544 | ||
a612e298 RS |
6545 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
6546 | "Keymap of key translations that can override keymaps.\n\ | |
6547 | This keymap works like `function-key-map', but comes after that,\n\ | |
6548 | and applies even for keys that have ordinary bindings."); | |
6549 | Vkey_translation_map = Qnil; | |
6550 | ||
8026024c KH |
6551 | DEFVAR_BOOL ("cannot-suspend", &cannot_suspend, |
6552 | "Non-nil means to always spawn a subshell instead of suspending,\n\ | |
6553 | even if the operating system has support for stopping a process."); | |
6554 | cannot_suspend = 0; | |
6555 | ||
284f4730 | 6556 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 6557 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 6558 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
6559 | for elements that have prompt strings.\n\ |
6560 | The menu is displayed on the screen\n\ | |
6561 | if X menus were enabled at configuration\n\ | |
6562 | time and the previous event was a mouse click prefix key.\n\ | |
6563 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
6564 | menu_prompting = 1; |
6565 | ||
6566 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
6567 | "Character to see next line of menu prompt.\n\ | |
6568 | Type this character while in a menu prompt to rotate around the lines of it."); | |
18cd2eeb | 6569 | XSETINT (menu_prompt_more_char, ' '); |
9fa4395d RS |
6570 | |
6571 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
6572 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
6573 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
6574 | character it reads. For example, after evaluating the expression\n\ | |
9d9f56dd | 6575 | (setq extra-keyboard-modifiers ?\\C-x)\n\ |
80645119 JB |
6576 | all input characters will have the control modifier applied to them.\n\ |
6577 | \n\ | |
9d9f56dd | 6578 | Note that the character ?\\C-@, equivalent to the integer zero, does\n\ |
80645119 | 6579 | not count as a control character; rather, it counts as a character\n\ |
27203ead | 6580 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 6581 | cancels any modification."); |
9fa4395d | 6582 | extra_keyboard_modifiers = 0; |
86e5706b RS |
6583 | |
6584 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
6585 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
6586 | The command loop sets this to nil before each command,\n\ | |
6587 | and tests the value when the command returns.\n\ | |
6588 | Buffer modification stores t in this variable."); | |
6589 | Vdeactivate_mark = Qnil; | |
6590 | ||
b0f2a7bf KH |
6591 | DEFVAR_LISP ("command-hook-internal", &Vcommand_hook_internal, |
6592 | "Temporary storage of pre-command-hook or post-command-hook."); | |
6593 | Vcommand_hook_internal = Qnil; | |
6594 | ||
86e5706b | 6595 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, |
a1fd42c0 RS |
6596 | "Normal hook run before each command is executed.\n\ |
6597 | While the hook is run, its value is temporarily set to nil\n\ | |
6598 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6599 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6600 | `pre-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6601 | implementing hook functions that alter the set of hook functions."); | |
86e5706b RS |
6602 | Vpre_command_hook = Qnil; |
6603 | ||
6604 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
a1fd42c0 RS |
6605 | "Normal hook run after each command is executed.\n\ |
6606 | While the hook is run, its value is temporarily set to nil\n\ | |
6607 | to avoid an unbreakable infinite loop if a hook function gets an error.\n\ | |
6608 | As a result, a hook function cannot straightforwardly alter the value of\n\ | |
6609 | `post-command-hook'. See the Emacs Lisp manual for a way of\n\ | |
6610 | implementing hook functions that alter the set of hook functions."); | |
86e5706b | 6611 | Vpost_command_hook = Qnil; |
48e416d4 RS |
6612 | |
6613 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
6614 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
6615 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 6616 | |
9f9c0e27 RS |
6617 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
6618 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 6619 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 6620 | Vmenu_bar_final_items = Qnil; |
e9bf89a0 | 6621 | |
9dd3131c RS |
6622 | DEFVAR_LISP ("overriding-local-map", &Voverriding_local_map, |
6623 | "Keymap that overrides all other local keymaps.\n\ | |
6624 | If this variable is non-nil, it is used as a keymap instead of the\n\ | |
6625 | buffer's local map, and the minor mode keymaps and text property keymaps."); | |
6626 | Voverriding_local_map = Qnil; | |
6627 | ||
d0a49716 RS |
6628 | DEFVAR_LISP ("overriding-local-map-menu-flag", &Voverriding_local_map_menu_flag, |
6629 | "Non-nil means `overriding-local-map' applies to the menu bar.\n\ | |
6630 | Otherwise, the menu bar continues to reflect the buffer's local map\n\ | |
6631 | and the minor mode maps regardless of `overriding-local-map'."); | |
6632 | Voverriding_local_map_menu_flag = Qnil; | |
6633 | ||
2eb6bfbe | 6634 | #ifdef HAVE_MOUSE |
71edead1 | 6635 | DEFVAR_LISP ("track-mouse", &do_mouse_tracking, |
e9bf89a0 | 6636 | "*Non-nil means generate motion events for mouse motion."); |
2eb6bfbe | 6637 | #endif |
80e4aa30 | 6638 | |
270a208f RS |
6639 | DEFVAR_LISP ("system-key-alist", &Vsystem_key_alist, |
6640 | "Alist of system-specific X windows key symbols.\n\ | |
80e4aa30 | 6641 | Each element should have the form (N . SYMBOL) where N is the\n\ |
270a208f | 6642 | numeric keysym code (sans the \"system-specific\" bit 1<<28)\n\ |
80e4aa30 | 6643 | and SYMBOL is its name."); |
a69a8ca2 | 6644 | Vsystem_key_alist = Qnil; |
8a792f3a RS |
6645 | |
6646 | DEFVAR_LISP ("deferred-action-list", &Vdeferred_action_list, | |
6647 | "List of deferred actions to be performed at a later time.\n\ | |
6648 | The precise format isn't relevant here; we just check whether it is nil."); | |
6649 | Vdeferred_action_list = Qnil; | |
6650 | ||
6651 | DEFVAR_LISP ("deferred-action-function", &Vdeferred_action_function, | |
6652 | "Function to call to handle deferred actions, after each command.\n\ | |
6653 | This function is called with no arguments after each command\n\ | |
6654 | whenever `deferred-action-list' is non-nil."); | |
6655 | Vdeferred_action_function = Qnil; | |
6c6083a9 KH |
6656 | |
6657 | DEFVAR_DISPLAY ("prefix-arg", Vprefix_arg, | |
6658 | "The value of the prefix argument for the next editing command.\n\ | |
6659 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ | |
6660 | or a list whose car is a number for just one or more C-U's\n\ | |
6661 | or nil if no argument has been specified.\n\ | |
6662 | \n\ | |
6663 | You cannot examine this variable to find the argument for this command\n\ | |
6664 | since it has been set to nil by the time you can look.\n\ | |
6665 | Instead, you should use the variable `current-prefix-arg', although\n\ | |
6666 | normally commands can get this prefix argument with (interactive \"P\")."); | |
6667 | ||
6668 | DEFVAR_DISPLAY ("current-prefix-arg", Vcurrent_prefix_arg, | |
6669 | "The value of the prefix argument for this editing command.\n\ | |
6670 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ | |
6671 | or a list whose car is a number for just one or more C-U's\n\ | |
6672 | or nil if no argument has been specified.\n\ | |
6673 | This is what `(interactive \"P\")' returns."); | |
40f239ee KH |
6674 | |
6675 | DEFVAR_DISPLAY ("last-event-frame", Vlast_event_frame, | |
6676 | "The frame in which the most recently read event occurred.\n\ | |
6677 | If the last event came from a keyboard macro, this is set to `macro'."); | |
284f4730 JB |
6678 | } |
6679 | ||
6680 | keys_of_keyboard () | |
6681 | { | |
6682 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
6683 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
6684 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
6685 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
6686 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
6687 | } |