Commit | Line | Data |
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284f4730 | 1 | /* Keyboard and mouse input; editor command loop. |
86e5706b | 2 | Copyright (C) 1985, 1986, 1987, 1988, 1989, 1993 Free Software Foundation, Inc. |
284f4730 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
7b4aedb9 | 8 | the Free Software Foundation; either version 2, or (at your option) |
284f4730 JB |
9 | any later version. |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* Allow config.h to undefine symbols found here. */ | |
21 | #include <signal.h> | |
22 | ||
18160b98 | 23 | #include <config.h> |
284f4730 JB |
24 | #include <stdio.h> |
25 | #undef NULL | |
26 | #include "termchar.h" | |
27 | #include "termopts.h" | |
28 | #include "lisp.h" | |
29 | #include "termhooks.h" | |
30 | #include "macros.h" | |
ff11dfa1 | 31 | #include "frame.h" |
284f4730 JB |
32 | #include "window.h" |
33 | #include "commands.h" | |
34 | #include "buffer.h" | |
35 | #include "disptab.h" | |
f4255cd1 | 36 | #include "dispextern.h" |
284f4730 | 37 | #include "keyboard.h" |
497ba7a1 | 38 | #include "intervals.h" |
9ac0d9e0 | 39 | #include "blockinput.h" |
284f4730 JB |
40 | #include <setjmp.h> |
41 | #include <errno.h> | |
42 | ||
284f4730 JB |
43 | #ifndef VMS |
44 | #include <sys/ioctl.h> | |
284f4730 JB |
45 | #endif |
46 | ||
52baf19e | 47 | #include "syssignal.h" |
6ef5b54f | 48 | #include "systty.h" |
ffd56f97 | 49 | #include "systime.h" |
52baf19e JB |
50 | |
51 | extern int errno; | |
52 | ||
9ac0d9e0 JB |
53 | /* Variables for blockinput.h: */ |
54 | ||
55 | /* Non-zero if interrupt input is blocked right now. */ | |
63927c41 | 56 | int interrupt_input_blocked; |
9ac0d9e0 JB |
57 | |
58 | /* Nonzero means an input interrupt has arrived | |
59 | during the current critical section. */ | |
63927c41 | 60 | int interrupt_input_pending; |
9ac0d9e0 JB |
61 | |
62 | ||
284f4730 JB |
63 | #ifdef HAVE_X_WINDOWS |
64 | extern Lisp_Object Vmouse_grabbed; | |
65 | ||
66 | /* Make all keyboard buffers much bigger when using X windows. */ | |
67 | #define KBD_BUFFER_SIZE 4096 | |
68 | #else /* No X-windows, character input */ | |
69 | #define KBD_BUFFER_SIZE 256 | |
70 | #endif /* No X-windows */ | |
71 | ||
72 | /* Following definition copied from eval.c */ | |
73 | ||
74 | struct backtrace | |
75 | { | |
76 | struct backtrace *next; | |
77 | Lisp_Object *function; | |
78 | Lisp_Object *args; /* Points to vector of args. */ | |
79 | int nargs; /* length of vector. If nargs is UNEVALLED, | |
80 | args points to slot holding list of | |
81 | unevalled args */ | |
82 | char evalargs; | |
83 | }; | |
84 | ||
85 | /* Non-nil disable property on a command means | |
86 | do not execute it; call disabled-command-hook's value instead. */ | |
2e894dab | 87 | Lisp_Object Qdisabled, Qdisabled_command_hook; |
284f4730 JB |
88 | |
89 | #define NUM_RECENT_KEYS (100) | |
90 | int recent_keys_index; /* Index for storing next element into recent_keys */ | |
91 | int total_keys; /* Total number of elements stored into recent_keys */ | |
5160df46 | 92 | Lisp_Object recent_keys; /* A vector, holding the last 100 keystrokes */ |
284f4730 | 93 | |
6569cc8d JB |
94 | /* Vector holding the key sequence that invoked the current command. |
95 | It is reused for each command, and it may be longer than the current | |
96 | sequence; this_command_key_count indicates how many elements | |
97 | actually mean something. | |
98 | It's easier to staticpro a single Lisp_Object than an array. */ | |
99 | Lisp_Object this_command_keys; | |
100 | int this_command_key_count; | |
284f4730 JB |
101 | |
102 | extern int minbuf_level; | |
103 | ||
104 | extern struct backtrace *backtrace_list; | |
105 | ||
106 | /* Nonzero means do menu prompting. */ | |
107 | static int menu_prompting; | |
108 | ||
109 | /* Character to see next line of menu prompt. */ | |
110 | static Lisp_Object menu_prompt_more_char; | |
111 | ||
112 | /* For longjmp to where kbd input is being done. */ | |
113 | static jmp_buf getcjmp; | |
114 | ||
115 | /* True while doing kbd input. */ | |
116 | int waiting_for_input; | |
117 | ||
118 | /* True while displaying for echoing. Delays C-g throwing. */ | |
119 | static int echoing; | |
120 | ||
121 | /* Nonzero means C-G should cause immediate error-signal. */ | |
122 | int immediate_quit; | |
123 | ||
124 | /* Character to recognize as the help char. */ | |
7e85b935 | 125 | Lisp_Object Vhelp_char; |
284f4730 JB |
126 | |
127 | /* Form to execute when help char is typed. */ | |
128 | Lisp_Object Vhelp_form; | |
129 | ||
7e85b935 RS |
130 | /* Command to run when the help character follows a prefix key. */ |
131 | Lisp_Object Vprefix_help_command; | |
132 | ||
9f9c0e27 RS |
133 | /* List of items that should move to the end of the menu bar. */ |
134 | Lisp_Object Vmenu_bar_final_items; | |
a73c5e29 | 135 | |
284f4730 JB |
136 | /* Character that causes a quit. Normally C-g. |
137 | ||
138 | If we are running on an ordinary terminal, this must be an ordinary | |
139 | ASCII char, since we want to make it our interrupt character. | |
140 | ||
141 | If we are not running on an ordinary terminal, it still needs to be | |
142 | an ordinary ASCII char. This character needs to be recognized in | |
143 | the input interrupt handler. At this point, the keystroke is | |
144 | represented as a struct input_event, while the desired quit | |
145 | character is specified as a lispy event. The mapping from struct | |
146 | input_events to lispy events cannot run in an interrupt handler, | |
147 | and the reverse mapping is difficult for anything but ASCII | |
148 | keystrokes. | |
149 | ||
150 | FOR THESE ELABORATE AND UNSATISFYING REASONS, quit_char must be an | |
151 | ASCII character. */ | |
152 | int quit_char; | |
153 | ||
154 | extern Lisp_Object current_global_map; | |
155 | extern int minibuf_level; | |
156 | ||
157 | /* Current depth in recursive edits. */ | |
158 | int command_loop_level; | |
159 | ||
160 | /* Total number of times command_loop has read a key sequence. */ | |
161 | int num_input_keys; | |
162 | ||
163 | /* Last input character read as a command. */ | |
164 | Lisp_Object last_command_char; | |
165 | ||
7d6de002 RS |
166 | /* Last input character read as a command, not counting menus |
167 | reached by the mouse. */ | |
168 | Lisp_Object last_nonmenu_event; | |
169 | ||
284f4730 JB |
170 | /* Last input character read for any purpose. */ |
171 | Lisp_Object last_input_char; | |
172 | ||
dbc4e1c1 JB |
173 | /* If not Qnil, a list of objects to be read as subsequent command input. */ |
174 | Lisp_Object unread_command_events; | |
284f4730 | 175 | |
86e5706b RS |
176 | /* If not -1, an event to be read as subsequent command input. */ |
177 | int unread_command_char; | |
178 | ||
cd21b839 JB |
179 | /* If not Qnil, this is a switch-frame event which we decided to put |
180 | off until the end of a key sequence. This should be read as the | |
dbc4e1c1 | 181 | next command input, after any unread_command_events. |
8f805655 JB |
182 | |
183 | read_key_sequence uses this to delay switch-frame events until the | |
184 | end of the key sequence; Fread_char uses it to put off switch-frame | |
185 | events until a non-ASCII event is acceptable as input. */ | |
186 | Lisp_Object unread_switch_frame; | |
cd21b839 | 187 | |
9fa4395d RS |
188 | /* A mask of extra modifier bits to put into every keyboard char. */ |
189 | int extra_keyboard_modifiers; | |
190 | ||
284f4730 JB |
191 | /* Char to use as prefix when a meta character is typed in. |
192 | This is bound on entry to minibuffer in case ESC is changed there. */ | |
193 | ||
194 | Lisp_Object meta_prefix_char; | |
195 | ||
196 | /* Last size recorded for a current buffer which is not a minibuffer. */ | |
197 | static int last_non_minibuf_size; | |
198 | ||
06ef7355 | 199 | /* Number of idle seconds before an auto-save and garbage collection. */ |
284f4730 JB |
200 | static Lisp_Object Vauto_save_timeout; |
201 | ||
202 | /* Total number of times read_char has returned. */ | |
203 | int num_input_chars; | |
204 | ||
51172b6d RS |
205 | /* Total number of times read_char has returned, outside of macros. */ |
206 | int num_nonmacro_input_chars; | |
207 | ||
284f4730 JB |
208 | /* Auto-save automatically when this many characters have been typed |
209 | since the last time. */ | |
210 | ||
211 | static int auto_save_interval; | |
212 | ||
51172b6d | 213 | /* Value of num_nonmacro_input_chars as of last auto save. */ |
284f4730 JB |
214 | |
215 | int last_auto_save; | |
216 | ||
217 | /* Last command executed by the editor command loop, not counting | |
218 | commands that set the prefix argument. */ | |
219 | ||
220 | Lisp_Object last_command; | |
221 | ||
222 | /* The command being executed by the command loop. | |
223 | Commands may set this, and the value set will be copied into last_command | |
224 | instead of the actual command. */ | |
225 | Lisp_Object this_command; | |
226 | ||
07d2b8de | 227 | #ifdef MULTI_FRAME |
fce33686 | 228 | /* The frame in which the last input event occurred, or Qmacro if the |
3c370943 JB |
229 | last event came from a macro. We use this to determine when to |
230 | generate switch-frame events. This may be cleared by functions | |
231 | like Fselect_frame, to make sure that a switch-frame event is | |
232 | generated by the next character. */ | |
233 | Lisp_Object internal_last_event_frame; | |
234 | ||
235 | /* A user-visible version of the above, intended to allow users to | |
236 | figure out where the last event came from, if the event doesn't | |
237 | carry that information itself (i.e. if it was a character). */ | |
ff11dfa1 | 238 | Lisp_Object Vlast_event_frame; |
07d2b8de | 239 | #endif |
284f4730 | 240 | |
1113d9db JB |
241 | /* The timestamp of the last input event we received from the X server. |
242 | X Windows wants this for selection ownership. */ | |
284f4730 JB |
243 | unsigned long last_event_timestamp; |
244 | ||
245 | Lisp_Object Qself_insert_command; | |
246 | Lisp_Object Qforward_char; | |
247 | Lisp_Object Qbackward_char; | |
e58aa385 | 248 | Lisp_Object Qundefined; |
284f4730 JB |
249 | |
250 | /* read_key_sequence stores here the command definition of the | |
251 | key sequence that it reads. */ | |
252 | Lisp_Object read_key_sequence_cmd; | |
253 | ||
254 | /* Form to evaluate (if non-nil) when Emacs is started. */ | |
255 | Lisp_Object Vtop_level; | |
256 | ||
257 | /* User-supplied string to translate input characters through. */ | |
258 | Lisp_Object Vkeyboard_translate_table; | |
259 | ||
260 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ | |
261 | extern Lisp_Object Vfunction_key_map; | |
262 | ||
a612e298 RS |
263 | /* Keymap mapping ASCII function key sequences onto their preferred forms. */ |
264 | Lisp_Object Vkey_translation_map; | |
265 | ||
86e5706b RS |
266 | /* Non-nil means deactivate the mark at end of this command. */ |
267 | Lisp_Object Vdeactivate_mark; | |
268 | ||
48e416d4 RS |
269 | /* Menu bar specified in Lucid Emacs fashion. */ |
270 | ||
271 | Lisp_Object Vlucid_menu_bar_dirty_flag; | |
272 | Lisp_Object Qrecompute_lucid_menubar, Qactivate_menubar_hook; | |
273 | ||
86e5706b RS |
274 | /* Hooks to run before and after each command. */ |
275 | Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
276 | Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
277 | ||
284f4730 JB |
278 | /* File in which we write all commands we read. */ |
279 | FILE *dribble; | |
280 | ||
281 | /* Nonzero if input is available. */ | |
282 | int input_pending; | |
283 | ||
b04904fb RS |
284 | /* 1 if should obey 0200 bit in input chars as "Meta", 2 if should |
285 | keep 0200 bit in input chars. 0 to ignore the 0200 bit. */ | |
286 | ||
284f4730 JB |
287 | int meta_key; |
288 | ||
289 | extern char *pending_malloc_warning; | |
290 | ||
291 | /* Circular buffer for pre-read keyboard input. */ | |
292 | static struct input_event kbd_buffer[KBD_BUFFER_SIZE]; | |
293 | ||
7b4aedb9 | 294 | /* Vector to GCPRO the frames and windows mentioned in kbd_buffer. |
4bb994d1 | 295 | |
7b4aedb9 JB |
296 | The interrupt-level event handlers will never enqueue an event on a |
297 | frame which is not in Vframe_list, and once an event is dequeued, | |
3c370943 JB |
298 | internal_last_event_frame or the event itself points to the frame. |
299 | So that's all fine. | |
4bb994d1 JB |
300 | |
301 | But while the event is sitting in the queue, it's completely | |
302 | unprotected. Suppose the user types one command which will run for | |
303 | a while and then delete a frame, and then types another event at | |
304 | the frame that will be deleted, before the command gets around to | |
305 | it. Suppose there are no references to this frame elsewhere in | |
306 | Emacs, and a GC occurs before the second event is dequeued. Now we | |
307 | have an event referring to a freed frame, which will crash Emacs | |
308 | when it is dequeued. | |
309 | ||
3c370943 | 310 | Similar things happen when an event on a scroll bar is enqueued; the |
7b4aedb9 | 311 | window may be deleted while the event is in the queue. |
4bb994d1 | 312 | |
7b4aedb9 JB |
313 | So, we use this vector to protect the frame_or_window field in the |
314 | event queue. That way, they'll be dequeued as dead frames or | |
315 | windows, but still valid lisp objects. | |
316 | ||
317 | If kbd_buffer[i].kind != no_event, then | |
318 | (XVECTOR (kbd_buffer_frame_or_window)->contents[i] | |
319 | == kbd_buffer[i].frame_or_window. */ | |
320 | static Lisp_Object kbd_buffer_frame_or_window; | |
4bb994d1 | 321 | |
284f4730 JB |
322 | /* Pointer to next available character in kbd_buffer. |
323 | If kbd_fetch_ptr == kbd_store_ptr, the buffer is empty. | |
324 | This may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the the | |
325 | next available char is in kbd_buffer[0]. */ | |
326 | static struct input_event *kbd_fetch_ptr; | |
327 | ||
328 | /* Pointer to next place to store character in kbd_buffer. This | |
329 | may be kbd_buffer + KBD_BUFFER_SIZE, meaning that the next | |
330 | character should go in kbd_buffer[0]. */ | |
ff0b5f4c JB |
331 | #ifdef __STDC__ |
332 | volatile | |
333 | #endif | |
284f4730 JB |
334 | static struct input_event *kbd_store_ptr; |
335 | ||
336 | /* The above pair of variables forms a "queue empty" flag. When we | |
337 | enqueue a non-hook event, we increment kbd_write_count. When we | |
338 | dequeue a non-hook event, we increment kbd_read_count. We say that | |
4bb994d1 | 339 | there is input available iff the two counters are not equal. |
284f4730 JB |
340 | |
341 | Why not just have a flag set and cleared by the enqueuing and | |
342 | dequeuing functions? Such a flag could be screwed up by interrupts | |
343 | at inopportune times. */ | |
344 | ||
663258f2 | 345 | /* If this flag is non-zero, we check mouse_moved to see when the |
4bb994d1 | 346 | mouse moves, and motion events will appear in the input stream. If |
663258f2 JB |
347 | it is zero, mouse motion is ignored. */ |
348 | static int do_mouse_tracking; | |
284f4730 JB |
349 | |
350 | /* The window system handling code should set this if the mouse has | |
351 | moved since the last call to the mouse_position_hook. Calling that | |
352 | hook should clear this. Code assumes that if this is set, it can | |
353 | call mouse_position_hook to get the promised position, so don't set | |
354 | it unless you're prepared to substantiate the claim! */ | |
355 | int mouse_moved; | |
356 | ||
357 | /* True iff there is an event in kbd_buffer, or if mouse tracking is | |
358 | enabled and there is a new mouse position in the mouse movement | |
359 | buffer. Note that if this is false, that doesn't mean that there | |
360 | is readable input; all the events in the queue might be button-up | |
361 | events, and do_mouse_tracking might be off. */ | |
362 | #define EVENT_QUEUES_EMPTY \ | |
363 | ((kbd_fetch_ptr == kbd_store_ptr) && (!do_mouse_tracking || !mouse_moved)) | |
364 | ||
365 | ||
366 | /* Symbols to head events. */ | |
367 | Lisp_Object Qmouse_movement; | |
3c370943 | 368 | Lisp_Object Qscroll_bar_movement; |
cd21b839 JB |
369 | Lisp_Object Qswitch_frame; |
370 | ||
284f4730 JB |
371 | /* Symbols to denote kinds of events. */ |
372 | Lisp_Object Qfunction_key; | |
373 | Lisp_Object Qmouse_click; | |
374 | /* Lisp_Object Qmouse_movement; - also an event header */ | |
284f4730 JB |
375 | |
376 | /* Properties of event headers. */ | |
377 | Lisp_Object Qevent_kind; | |
88cb0656 | 378 | Lisp_Object Qevent_symbol_elements; |
284f4730 | 379 | |
598a9fa7 JB |
380 | Lisp_Object Qmenu_enable; |
381 | ||
0a7f1fc0 JB |
382 | /* An event header symbol HEAD may have a property named |
383 | Qevent_symbol_element_mask, which is of the form (BASE MODIFIERS); | |
384 | BASE is the base, unmodified version of HEAD, and MODIFIERS is the | |
385 | mask of modifiers applied to it. If present, this is used to help | |
386 | speed up parse_modifiers. */ | |
387 | Lisp_Object Qevent_symbol_element_mask; | |
388 | ||
389 | /* An unmodified event header BASE may have a property named | |
390 | Qmodifier_cache, which is an alist mapping modifier masks onto | |
391 | modified versions of BASE. If present, this helps speed up | |
392 | apply_modifiers. */ | |
393 | Lisp_Object Qmodifier_cache; | |
394 | ||
5ec75a55 | 395 | /* Symbols to use for parts of windows. */ |
284f4730 | 396 | Lisp_Object Qmode_line; |
e5d77022 | 397 | Lisp_Object Qvertical_line; |
3c370943 | 398 | Lisp_Object Qvertical_scroll_bar; |
5ec75a55 RS |
399 | Lisp_Object Qmenu_bar; |
400 | ||
401 | extern Lisp_Object Qmenu_enable; | |
284f4730 | 402 | |
f4255cd1 JB |
403 | Lisp_Object recursive_edit_unwind (), command_loop (); |
404 | Lisp_Object Fthis_command_keys (); | |
284f4730 | 405 | |
ffd56f97 JB |
406 | /* Address (if not 0) of EMACS_TIME to zero out if a SIGIO interrupt |
407 | happens. */ | |
408 | EMACS_TIME *input_available_clear_time; | |
284f4730 JB |
409 | |
410 | /* Nonzero means use SIGIO interrupts; zero means use CBREAK mode. | |
411 | Default is 1 if INTERRUPT_INPUT is defined. */ | |
412 | int interrupt_input; | |
413 | ||
414 | /* Nonzero while interrupts are temporarily deferred during redisplay. */ | |
415 | int interrupts_deferred; | |
416 | ||
417 | /* nonzero means use ^S/^Q for flow control. */ | |
418 | int flow_control; | |
419 | ||
284f4730 JB |
420 | /* Allow m- file to inhibit use of FIONREAD. */ |
421 | #ifdef BROKEN_FIONREAD | |
422 | #undef FIONREAD | |
423 | #endif | |
424 | ||
425 | /* We are unable to use interrupts if FIONREAD is not available, | |
426 | so flush SIGIO so we won't try. */ | |
427 | #ifndef FIONREAD | |
428 | #ifdef SIGIO | |
429 | #undef SIGIO | |
430 | #endif | |
431 | #endif | |
432 | ||
34f04431 RS |
433 | /* If we support X Windows, turn on the code to poll periodically |
434 | to detect C-g. It isn't actually used when doing interrupt input. */ | |
284f4730 | 435 | #ifdef HAVE_X_WINDOWS |
284f4730 JB |
436 | #define POLL_FOR_INPUT |
437 | #endif | |
284f4730 JB |
438 | \f |
439 | /* Global variable declarations. */ | |
440 | ||
441 | /* Function for init_keyboard to call with no args (if nonzero). */ | |
442 | void (*keyboard_init_hook) (); | |
443 | ||
444 | static int read_avail_input (); | |
445 | static void get_input_pending (); | |
9fd7d808 | 446 | static int readable_events (); |
7617111f | 447 | static Lisp_Object read_char_menu_prompt (); |
a612e298 RS |
448 | static Lisp_Object make_lispy_event (); |
449 | static Lisp_Object make_lispy_movement (); | |
450 | static Lisp_Object modify_event_symbol (); | |
451 | static Lisp_Object make_lispy_switch_frame (); | |
284f4730 JB |
452 | |
453 | /* > 0 if we are to echo keystrokes. */ | |
454 | static int echo_keystrokes; | |
455 | ||
456 | /* Nonzero means echo each character as typed. */ | |
457 | static int immediate_echo; | |
458 | ||
459 | /* The text we're echoing in the modeline - partial key sequences, | |
f4255cd1 JB |
460 | usually. '\0'-terminated. This really shouldn't have a fixed size. */ |
461 | static char echobuf[300]; | |
284f4730 JB |
462 | |
463 | /* Where to append more text to echobuf if we want to. */ | |
464 | static char *echoptr; | |
465 | ||
466 | #define min(a,b) ((a)<(b)?(a):(b)) | |
467 | #define max(a,b) ((a)>(b)?(a):(b)) | |
468 | ||
469 | /* Install the string STR as the beginning of the string of echoing, | |
470 | so that it serves as a prompt for the next character. | |
471 | Also start echoing. */ | |
472 | ||
473 | echo_prompt (str) | |
474 | char *str; | |
475 | { | |
476 | int len = strlen (str); | |
477 | if (len > sizeof echobuf - 4) | |
478 | len = sizeof echobuf - 4; | |
0a7f1fc0 | 479 | bcopy (str, echobuf, len); |
284f4730 | 480 | echoptr = echobuf + len; |
0a7f1fc0 | 481 | *echoptr = '\0'; |
284f4730 JB |
482 | |
483 | echo (); | |
484 | } | |
485 | ||
486 | /* Add C to the echo string, if echoing is going on. | |
487 | C can be a character, which is printed prettily ("M-C-x" and all that | |
488 | jazz), or a symbol, whose name is printed. */ | |
489 | ||
490 | echo_char (c) | |
491 | Lisp_Object c; | |
492 | { | |
493 | extern char *push_key_description (); | |
494 | ||
495 | if (immediate_echo) | |
496 | { | |
497 | char *ptr = echoptr; | |
498 | ||
499 | if (ptr != echobuf) | |
500 | *ptr++ = ' '; | |
501 | ||
502 | /* If someone has passed us a composite event, use its head symbol. */ | |
88cb0656 | 503 | c = EVENT_HEAD (c); |
284f4730 JB |
504 | |
505 | if (XTYPE (c) == Lisp_Int) | |
506 | { | |
507 | if (ptr - echobuf > sizeof echobuf - 6) | |
508 | return; | |
509 | ||
cb5df6ae | 510 | ptr = push_key_description (XINT (c), ptr); |
284f4730 JB |
511 | } |
512 | else if (XTYPE (c) == Lisp_Symbol) | |
513 | { | |
514 | struct Lisp_String *name = XSYMBOL (c)->name; | |
515 | if (((ptr - echobuf) + name->size + 4) > sizeof echobuf) | |
516 | return; | |
517 | bcopy (name->data, ptr, name->size); | |
518 | ptr += name->size; | |
519 | } | |
520 | ||
7e85b935 | 521 | if (echoptr == echobuf && EQ (c, Vhelp_char)) |
284f4730 JB |
522 | { |
523 | strcpy (ptr, " (Type ? for further options)"); | |
524 | ptr += strlen (ptr); | |
525 | } | |
526 | ||
527 | *ptr = 0; | |
528 | echoptr = ptr; | |
529 | ||
530 | echo (); | |
531 | } | |
532 | } | |
533 | ||
534 | /* Temporarily add a dash to the end of the echo string if it's not | |
535 | empty, so that it serves as a mini-prompt for the very next character. */ | |
536 | ||
537 | echo_dash () | |
538 | { | |
539 | if (!immediate_echo && echoptr == echobuf) | |
540 | return; | |
4bafa972 JB |
541 | /* Do nothing if not echoing at all. */ |
542 | if (echoptr == 0) | |
543 | return; | |
284f4730 JB |
544 | |
545 | /* Put a dash at the end of the buffer temporarily, | |
546 | but make it go away when the next character is added. */ | |
547 | echoptr[0] = '-'; | |
548 | echoptr[1] = 0; | |
549 | ||
550 | echo (); | |
551 | } | |
552 | ||
553 | /* Display the current echo string, and begin echoing if not already | |
554 | doing so. */ | |
555 | ||
556 | echo () | |
557 | { | |
558 | if (!immediate_echo) | |
559 | { | |
560 | int i; | |
561 | immediate_echo = 1; | |
562 | ||
563 | for (i = 0; i < this_command_key_count; i++) | |
6569cc8d | 564 | echo_char (XVECTOR (this_command_keys)->contents[i]); |
284f4730 JB |
565 | echo_dash (); |
566 | } | |
567 | ||
568 | echoing = 1; | |
569 | message1 (echobuf); | |
570 | echoing = 0; | |
571 | ||
572 | if (waiting_for_input && !NILP (Vquit_flag)) | |
573 | quit_throw_to_read_char (); | |
574 | } | |
575 | ||
576 | /* Turn off echoing, for the start of a new command. */ | |
577 | ||
578 | cancel_echoing () | |
579 | { | |
580 | immediate_echo = 0; | |
581 | echoptr = echobuf; | |
582 | } | |
583 | ||
584 | /* Return the length of the current echo string. */ | |
585 | ||
586 | static int | |
587 | echo_length () | |
588 | { | |
589 | return echoptr - echobuf; | |
590 | } | |
591 | ||
592 | /* Truncate the current echo message to its first LEN chars. | |
593 | This and echo_char get used by read_key_sequence when the user | |
ff11dfa1 | 594 | switches frames while entering a key sequence. */ |
284f4730 JB |
595 | |
596 | static void | |
597 | echo_truncate (len) | |
598 | int len; | |
599 | { | |
600 | echobuf[len] = '\0'; | |
0a7f1fc0 | 601 | echoptr = echobuf + len; |
284f4730 JB |
602 | } |
603 | ||
604 | \f | |
605 | /* Functions for manipulating this_command_keys. */ | |
606 | static void | |
607 | add_command_key (key) | |
608 | Lisp_Object key; | |
609 | { | |
6569cc8d JB |
610 | int size = XVECTOR (this_command_keys)->size; |
611 | ||
612 | if (this_command_key_count >= size) | |
284f4730 | 613 | { |
6569cc8d JB |
614 | Lisp_Object new_keys = Fmake_vector (make_number (size * 2), Qnil); |
615 | ||
616 | bcopy (XVECTOR (this_command_keys)->contents, | |
617 | XVECTOR (new_keys)->contents, | |
8f805655 | 618 | size * sizeof (Lisp_Object)); |
6569cc8d JB |
619 | |
620 | this_command_keys = new_keys; | |
284f4730 | 621 | } |
6569cc8d JB |
622 | |
623 | XVECTOR (this_command_keys)->contents[this_command_key_count++] = key; | |
284f4730 JB |
624 | } |
625 | \f | |
626 | Lisp_Object | |
627 | recursive_edit_1 () | |
628 | { | |
629 | int count = specpdl_ptr - specpdl; | |
630 | Lisp_Object val; | |
631 | ||
632 | if (command_loop_level > 0) | |
633 | { | |
634 | specbind (Qstandard_output, Qt); | |
635 | specbind (Qstandard_input, Qt); | |
636 | } | |
637 | ||
638 | val = command_loop (); | |
639 | if (EQ (val, Qt)) | |
640 | Fsignal (Qquit, Qnil); | |
641 | ||
cb5df6ae | 642 | return unbind_to (count, Qnil); |
284f4730 JB |
643 | } |
644 | ||
645 | /* When an auto-save happens, record the "time", and don't do again soon. */ | |
646 | record_auto_save () | |
647 | { | |
51172b6d | 648 | last_auto_save = num_nonmacro_input_chars; |
284f4730 JB |
649 | } |
650 | \f | |
284f4730 JB |
651 | DEFUN ("recursive-edit", Frecursive_edit, Srecursive_edit, 0, 0, "", |
652 | "Invoke the editor command loop recursively.\n\ | |
653 | To get out of the recursive edit, a command can do `(throw 'exit nil)';\n\ | |
654 | that tells this function to return.\n\ | |
655 | Alternately, `(throw 'exit t)' makes this function signal an error.\n\ | |
656 | This function is called by the editor initialization to begin editing.") | |
657 | () | |
658 | { | |
659 | int count = specpdl_ptr - specpdl; | |
660 | Lisp_Object val; | |
661 | ||
662 | command_loop_level++; | |
663 | update_mode_lines = 1; | |
664 | ||
665 | record_unwind_protect (recursive_edit_unwind, | |
666 | (command_loop_level | |
667 | && current_buffer != XBUFFER (XWINDOW (selected_window)->buffer)) | |
668 | ? Fcurrent_buffer () | |
669 | : Qnil); | |
670 | recursive_edit_1 (); | |
671 | return unbind_to (count, Qnil); | |
672 | } | |
673 | ||
674 | Lisp_Object | |
675 | recursive_edit_unwind (buffer) | |
676 | Lisp_Object buffer; | |
677 | { | |
678 | if (!NILP (buffer)) | |
679 | Fset_buffer (buffer); | |
680 | ||
681 | command_loop_level--; | |
682 | update_mode_lines = 1; | |
683 | return Qnil; | |
684 | } | |
685 | \f | |
686 | Lisp_Object | |
687 | cmd_error (data) | |
688 | Lisp_Object data; | |
689 | { | |
690 | Lisp_Object errmsg, tail, errname, file_error; | |
691 | Lisp_Object stream; | |
692 | struct gcpro gcpro1; | |
693 | int i; | |
694 | ||
695 | Vquit_flag = Qnil; | |
696 | Vinhibit_quit = Qt; | |
697 | Vstandard_output = Qt; | |
698 | Vstandard_input = Qt; | |
699 | Vexecuting_macro = Qnil; | |
700 | echo_area_glyphs = 0; | |
701 | ||
ff11dfa1 | 702 | /* If the window system or terminal frame hasn't been initialized |
284f4730 JB |
703 | yet, or we're not interactive, it's best to dump this message out |
704 | to stderr and exit. */ | |
ff11dfa1 | 705 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
706 | || noninteractive) |
707 | stream = Qexternal_debugging_output; | |
708 | else | |
709 | { | |
710 | Fdiscard_input (); | |
711 | bitch_at_user (); | |
712 | stream = Qt; | |
713 | } | |
714 | ||
715 | errname = Fcar (data); | |
716 | ||
717 | if (EQ (errname, Qerror)) | |
718 | { | |
719 | data = Fcdr (data); | |
720 | if (!CONSP (data)) data = Qnil; | |
721 | errmsg = Fcar (data); | |
722 | file_error = Qnil; | |
723 | } | |
724 | else | |
725 | { | |
726 | errmsg = Fget (errname, Qerror_message); | |
727 | file_error = Fmemq (Qfile_error, | |
728 | Fget (errname, Qerror_conditions)); | |
729 | } | |
730 | ||
731 | /* Print an error message including the data items. | |
732 | This is done by printing it into a scratch buffer | |
733 | and then making a copy of the text in the buffer. */ | |
734 | ||
735 | if (!CONSP (data)) data = Qnil; | |
736 | tail = Fcdr (data); | |
737 | GCPRO1 (tail); | |
738 | ||
739 | /* For file-error, make error message by concatenating | |
740 | all the data items. They are all strings. */ | |
741 | if (!NILP (file_error) && !NILP (tail)) | |
742 | errmsg = XCONS (tail)->car, tail = XCONS (tail)->cdr; | |
743 | ||
744 | if (XTYPE (errmsg) == Lisp_String) | |
745 | Fprinc (errmsg, stream); | |
746 | else | |
747 | write_string_1 ("peculiar error", -1, stream); | |
748 | ||
749 | for (i = 0; CONSP (tail); tail = Fcdr (tail), i++) | |
750 | { | |
751 | write_string_1 (i ? ", " : ": ", 2, stream); | |
752 | if (!NILP (file_error)) | |
753 | Fprinc (Fcar (tail), stream); | |
754 | else | |
755 | Fprin1 (Fcar (tail), stream); | |
756 | } | |
757 | UNGCPRO; | |
758 | ||
ff11dfa1 | 759 | /* If the window system or terminal frame hasn't been initialized |
284f4730 | 760 | yet, or we're in -batch mode, this error should cause Emacs to exit. */ |
ff11dfa1 | 761 | if (! FRAME_MESSAGE_BUF (selected_frame) |
284f4730 JB |
762 | || noninteractive) |
763 | { | |
764 | Fterpri (stream); | |
765 | Fkill_emacs (make_number (-1)); | |
766 | } | |
767 | ||
768 | Vquit_flag = Qnil; | |
769 | ||
770 | Vinhibit_quit = Qnil; | |
771 | return make_number (0); | |
772 | } | |
773 | \f | |
774 | Lisp_Object command_loop_1 (); | |
775 | Lisp_Object command_loop_2 (); | |
776 | Lisp_Object top_level_1 (); | |
777 | ||
778 | /* Entry to editor-command-loop. | |
779 | This level has the catches for exiting/returning to editor command loop. | |
780 | It returns nil to exit recursive edit, t to abort it. */ | |
781 | ||
782 | Lisp_Object | |
783 | command_loop () | |
784 | { | |
785 | if (command_loop_level > 0 || minibuf_level > 0) | |
786 | { | |
787 | return internal_catch (Qexit, command_loop_2, Qnil); | |
788 | } | |
789 | else | |
790 | while (1) | |
791 | { | |
792 | internal_catch (Qtop_level, top_level_1, Qnil); | |
793 | internal_catch (Qtop_level, command_loop_2, Qnil); | |
794 | ||
795 | /* End of file in -batch run causes exit here. */ | |
796 | if (noninteractive) | |
797 | Fkill_emacs (Qt); | |
798 | } | |
799 | } | |
800 | ||
801 | /* Here we catch errors in execution of commands within the | |
802 | editing loop, and reenter the editing loop. | |
803 | When there is an error, cmd_error runs and returns a non-nil | |
804 | value to us. A value of nil means that cmd_loop_1 itself | |
805 | returned due to end of file (or end of kbd macro). */ | |
806 | ||
807 | Lisp_Object | |
808 | command_loop_2 () | |
809 | { | |
810 | register Lisp_Object val; | |
811 | ||
812 | do | |
813 | val = internal_condition_case (command_loop_1, Qerror, cmd_error); | |
814 | while (!NILP (val)); | |
815 | ||
816 | return Qnil; | |
817 | } | |
818 | ||
819 | Lisp_Object | |
820 | top_level_2 () | |
821 | { | |
822 | return Feval (Vtop_level); | |
823 | } | |
824 | ||
825 | Lisp_Object | |
826 | top_level_1 () | |
827 | { | |
828 | /* On entry to the outer level, run the startup file */ | |
829 | if (!NILP (Vtop_level)) | |
830 | internal_condition_case (top_level_2, Qerror, cmd_error); | |
831 | else if (!NILP (Vpurify_flag)) | |
832 | message ("Bare impure Emacs (standard Lisp code not loaded)"); | |
833 | else | |
834 | message ("Bare Emacs (standard Lisp code not loaded)"); | |
835 | return Qnil; | |
836 | } | |
837 | ||
838 | DEFUN ("top-level", Ftop_level, Stop_level, 0, 0, "", | |
839 | "Exit all recursive editing levels.") | |
840 | () | |
841 | { | |
842 | Fthrow (Qtop_level, Qnil); | |
843 | } | |
844 | ||
845 | DEFUN ("exit-recursive-edit", Fexit_recursive_edit, Sexit_recursive_edit, 0, 0, "", | |
846 | "Exit from the innermost recursive edit or minibuffer.") | |
847 | () | |
848 | { | |
849 | if (command_loop_level > 0 || minibuf_level > 0) | |
850 | Fthrow (Qexit, Qnil); | |
851 | ||
852 | error ("No recursive edit is in progress"); | |
853 | } | |
854 | ||
855 | DEFUN ("abort-recursive-edit", Fabort_recursive_edit, Sabort_recursive_edit, 0, 0, "", | |
856 | "Abort the command that requested this recursive edit or minibuffer input.") | |
857 | () | |
858 | { | |
859 | if (command_loop_level > 0 || minibuf_level > 0) | |
860 | Fthrow (Qexit, Qt); | |
861 | ||
862 | error ("No recursive edit is in progress"); | |
863 | } | |
864 | \f | |
865 | /* This is the actual command reading loop, | |
866 | sans error-handling encapsulation. */ | |
867 | ||
868 | Lisp_Object Fcommand_execute (); | |
869 | static int read_key_sequence (); | |
870 | ||
871 | Lisp_Object | |
872 | command_loop_1 () | |
873 | { | |
48e416d4 | 874 | Lisp_Object cmd, tem; |
284f4730 JB |
875 | int lose; |
876 | int nonundocount; | |
877 | Lisp_Object keybuf[30]; | |
878 | int i; | |
879 | int no_redisplay; | |
880 | int no_direct; | |
86e5706b RS |
881 | int prev_modiff; |
882 | struct buffer *prev_buffer; | |
284f4730 JB |
883 | |
884 | Vprefix_arg = Qnil; | |
86e5706b | 885 | Vdeactivate_mark = Qnil; |
284f4730 JB |
886 | waiting_for_input = 0; |
887 | cancel_echoing (); | |
888 | ||
889 | /* Don't clear out last_command at the beginning of a macro. */ | |
890 | if (XTYPE (Vexecuting_macro) != Lisp_String) | |
891 | last_command = Qt; | |
892 | ||
893 | nonundocount = 0; | |
894 | no_redisplay = 0; | |
895 | this_command_key_count = 0; | |
896 | ||
a612e298 RS |
897 | /* Make sure this hook runs after commands that get errors and |
898 | throw to top level. */ | |
899 | if (!NILP (Vpost_command_hook)) | |
900 | call1 (Vrun_hooks, Qpost_command_hook); | |
901 | ||
284f4730 JB |
902 | while (1) |
903 | { | |
904 | /* Install chars successfully executed in kbd macro. */ | |
905 | ||
906 | if (defining_kbd_macro && NILP (Vprefix_arg)) | |
907 | finalize_kbd_macro_chars (); | |
908 | ||
909 | /* Make sure the current window's buffer is selected. */ | |
910 | if (XBUFFER (XWINDOW (selected_window)->buffer) != current_buffer) | |
911 | set_buffer_internal (XBUFFER (XWINDOW (selected_window)->buffer)); | |
912 | ||
913 | /* Display any malloc warning that just came out. Use while because | |
914 | displaying one warning can cause another. */ | |
915 | ||
916 | while (pending_malloc_warning) | |
917 | display_malloc_warning (); | |
918 | ||
919 | no_direct = 0; | |
920 | ||
86e5706b RS |
921 | Vdeactivate_mark = Qnil; |
922 | ||
284f4730 | 923 | /* If minibuffer on and echo area in use, |
eb8c3be9 | 924 | wait 2 sec and redraw minibuffer. */ |
284f4730 JB |
925 | |
926 | if (minibuf_level && echo_area_glyphs) | |
927 | { | |
f1bed6d8 RS |
928 | /* Bind inhibit-quit to t so that C-g gets read in |
929 | rather than quitting back to the minibuffer. */ | |
930 | int count = specpdl_ptr - specpdl; | |
931 | specbind (Qinhibit_quit, Qt); | |
284f4730 | 932 | Fsit_for (make_number (2), Qnil, Qnil); |
cb5df6ae | 933 | unbind_to (count, Qnil); |
f1bed6d8 | 934 | |
284f4730 JB |
935 | echo_area_glyphs = 0; |
936 | no_direct = 1; | |
937 | if (!NILP (Vquit_flag)) | |
938 | { | |
939 | Vquit_flag = Qnil; | |
dbc4e1c1 | 940 | unread_command_events = Fcons (make_number (quit_char), Qnil); |
284f4730 JB |
941 | } |
942 | } | |
943 | ||
944 | #ifdef C_ALLOCA | |
945 | alloca (0); /* Cause a garbage collection now */ | |
946 | /* Since we can free the most stuff here. */ | |
947 | #endif /* C_ALLOCA */ | |
948 | ||
8f805655 | 949 | #if 0 |
ff11dfa1 | 950 | #ifdef MULTI_FRAME |
8f805655 JB |
951 | /* Select the frame that the last event came from. Usually, |
952 | switch-frame events will take care of this, but if some lisp | |
953 | code swallows a switch-frame event, we'll fix things up here. | |
954 | Is this a good idea? */ | |
3c370943 JB |
955 | if (XTYPE (internal_last_event_frame) == Lisp_Frame |
956 | && XFRAME (internal_last_event_frame) != selected_frame) | |
957 | Fselect_frame (internal_last_event_frame, Qnil); | |
cd21b839 | 958 | #endif |
284f4730 | 959 | #endif |
48e416d4 RS |
960 | /* If it has changed current-menubar from previous value, |
961 | really recompute the menubar from the value. */ | |
a646e520 RS |
962 | if (! NILP (Vlucid_menu_bar_dirty_flag) |
963 | && !NILP (Ffboundp (Qrecompute_lucid_menubar))) | |
48e416d4 RS |
964 | call0 (Qrecompute_lucid_menubar); |
965 | ||
0e9d6dd3 | 966 | #if 0 /* This is done in xdisp.c now. */ |
48e416d4 RS |
967 | #ifdef MULTI_FRAME |
968 | for (tem = Vframe_list; CONSP (tem); tem = XCONS (tem)->cdr) | |
969 | { | |
970 | struct frame *f = XFRAME (XCONS (tem)->car); | |
971 | struct window *w = XWINDOW (FRAME_SELECTED_WINDOW (f)); | |
598a9fa7 JB |
972 | |
973 | /* If the user has switched buffers or windows, we need to | |
974 | recompute to reflect the new bindings. But we'll | |
975 | recompute when update_mode_lines is set too; that means | |
976 | that people can use force-mode-line-update to request | |
977 | that the menu bar be recomputed. The adverse effect on | |
978 | the rest of the redisplay algorithm is about the same as | |
979 | windows_or_buffers_changed anyway. */ | |
48e416d4 | 980 | if (windows_or_buffers_changed |
598a9fa7 | 981 | || update_mode_lines |
48e416d4 RS |
982 | || (XFASTINT (w->last_modified) < MODIFF |
983 | && (XFASTINT (w->last_modified) | |
984 | <= XBUFFER (w->buffer)->save_modified))) | |
985 | { | |
986 | struct buffer *prev = current_buffer; | |
987 | current_buffer = XBUFFER (w->buffer); | |
988 | FRAME_MENU_BAR_ITEMS (f) = menu_bar_items (); | |
989 | current_buffer = prev; | |
990 | } | |
991 | } | |
992 | #endif /* MULTI_FRAME */ | |
0e9d6dd3 | 993 | #endif /* 0 */ |
284f4730 | 994 | |
8f805655 JB |
995 | /* Read next key sequence; i gets its length. */ |
996 | i = read_key_sequence (keybuf, (sizeof keybuf / sizeof (keybuf[0])), 0); | |
997 | ||
998 | ++num_input_keys; | |
999 | ||
284f4730 JB |
1000 | /* Now we have read a key sequence of length I, |
1001 | or else I is 0 and we found end of file. */ | |
1002 | ||
1003 | if (i == 0) /* End of file -- happens only in */ | |
1004 | return Qnil; /* a kbd macro, at the end. */ | |
dcc408a0 RS |
1005 | /* -1 means read_key_sequence got a menu that was rejected. |
1006 | Just loop around and read another command. */ | |
1007 | if (i == -1) | |
1008 | { | |
1009 | cancel_echoing (); | |
1010 | this_command_key_count = 0; | |
1011 | continue; | |
1012 | } | |
284f4730 | 1013 | |
284f4730 JB |
1014 | last_command_char = keybuf[i - 1]; |
1015 | ||
75c0b143 RS |
1016 | /* If the previous command tried to force a specific window-start, |
1017 | forget about that, in case this command moves point far away | |
1018 | from that position. */ | |
1019 | XWINDOW (selected_window)->force_start = Qnil; | |
1020 | ||
284f4730 JB |
1021 | cmd = read_key_sequence_cmd; |
1022 | if (!NILP (Vexecuting_macro)) | |
1023 | { | |
1024 | if (!NILP (Vquit_flag)) | |
1025 | { | |
1026 | Vexecuting_macro = Qt; | |
1027 | QUIT; /* Make some noise. */ | |
1028 | /* Will return since macro now empty. */ | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | /* Do redisplay processing after this command except in special | |
1033 | cases identified below that set no_redisplay to 1. */ | |
1034 | no_redisplay = 0; | |
1035 | ||
86e5706b RS |
1036 | prev_buffer = current_buffer; |
1037 | prev_modiff = MODIFF; | |
1038 | ||
284f4730 JB |
1039 | /* Execute the command. */ |
1040 | ||
86e5706b RS |
1041 | this_command = cmd; |
1042 | if (!NILP (Vpre_command_hook)) | |
1043 | call1 (Vrun_hooks, Qpre_command_hook); | |
1044 | ||
258bf746 | 1045 | if (NILP (this_command)) |
284f4730 JB |
1046 | { |
1047 | /* nil means key is undefined. */ | |
1048 | bitch_at_user (); | |
1049 | defining_kbd_macro = 0; | |
1050 | update_mode_lines = 1; | |
1051 | Vprefix_arg = Qnil; | |
86e5706b | 1052 | |
284f4730 JB |
1053 | } |
1054 | else | |
1055 | { | |
284f4730 JB |
1056 | if (NILP (Vprefix_arg) && ! no_direct) |
1057 | { | |
1058 | /* Recognize some common commands in common situations and | |
1059 | do them directly. */ | |
258bf746 | 1060 | if (EQ (this_command, Qforward_char) && point < ZV) |
284f4730 JB |
1061 | { |
1062 | struct Lisp_Vector *dp | |
1063 | = window_display_table (XWINDOW (selected_window)); | |
1064 | lose = FETCH_CHAR (point); | |
1065 | SET_PT (point + 1); | |
0f7a8fee JB |
1066 | if ((dp |
1067 | ? (XTYPE (DISP_CHAR_VECTOR (dp, lose)) != Lisp_Vector | |
06ddfb24 | 1068 | && XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1) |
0f7a8fee | 1069 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1070 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1071 | >= MODIFF) | |
1072 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
1073 | == point - 1) | |
1074 | && !windows_or_buffers_changed | |
1075 | && EQ (current_buffer->selective_display, Qnil) | |
1076 | && !detect_input_pending () | |
1077 | && NILP (Vexecuting_macro)) | |
1078 | no_redisplay = direct_output_forward_char (1); | |
1079 | goto directly_done; | |
1080 | } | |
258bf746 | 1081 | else if (EQ (this_command, Qbackward_char) && point > BEGV) |
284f4730 JB |
1082 | { |
1083 | struct Lisp_Vector *dp | |
1084 | = window_display_table (XWINDOW (selected_window)); | |
1085 | SET_PT (point - 1); | |
1086 | lose = FETCH_CHAR (point); | |
0f7a8fee JB |
1087 | if ((dp |
1088 | ? (XTYPE (DISP_CHAR_VECTOR (dp, lose)) != Lisp_Vector | |
06ddfb24 | 1089 | && XVECTOR (DISP_CHAR_VECTOR (dp, lose))->size == 1) |
0f7a8fee | 1090 | : (lose >= 0x20 && lose < 0x7f)) |
284f4730 JB |
1091 | && (XFASTINT (XWINDOW (selected_window)->last_modified) |
1092 | >= MODIFF) | |
1093 | && (XFASTINT (XWINDOW (selected_window)->last_point) | |
1094 | == point + 1) | |
1095 | && !windows_or_buffers_changed | |
1096 | && EQ (current_buffer->selective_display, Qnil) | |
1097 | && !detect_input_pending () | |
1098 | && NILP (Vexecuting_macro)) | |
1099 | no_redisplay = direct_output_forward_char (-1); | |
1100 | goto directly_done; | |
1101 | } | |
258bf746 | 1102 | else if (EQ (this_command, Qself_insert_command) |
284f4730 JB |
1103 | /* Try this optimization only on ascii keystrokes. */ |
1104 | && XTYPE (last_command_char) == Lisp_Int) | |
1105 | { | |
1106 | unsigned char c = XINT (last_command_char); | |
1107 | ||
1108 | if (NILP (Vexecuting_macro) && | |
1109 | !EQ (minibuf_window, selected_window)) | |
1110 | { | |
1111 | if (!nonundocount || nonundocount >= 20) | |
1112 | { | |
1113 | Fundo_boundary (); | |
1114 | nonundocount = 0; | |
1115 | } | |
1116 | nonundocount++; | |
1117 | } | |
1118 | lose = (XFASTINT (XWINDOW (selected_window)->last_modified) | |
1119 | < MODIFF) | |
1120 | || (XFASTINT (XWINDOW (selected_window)->last_point) | |
1121 | != point) | |
1122 | || MODIFF <= current_buffer->save_modified | |
1123 | || windows_or_buffers_changed | |
1124 | || !EQ (current_buffer->selective_display, Qnil) | |
1125 | || detect_input_pending () | |
1126 | || !NILP (Vexecuting_macro); | |
b8d9050d | 1127 | if (internal_self_insert (c, 0)) |
284f4730 JB |
1128 | { |
1129 | lose = 1; | |
1130 | nonundocount = 0; | |
1131 | } | |
1132 | if (!lose && | |
1133 | (point == ZV || FETCH_CHAR (point) == '\n')) | |
1134 | { | |
1135 | struct Lisp_Vector *dp | |
1136 | = window_display_table (XWINDOW (selected_window)); | |
b8d9050d | 1137 | int lose = c; |
284f4730 | 1138 | |
0f7a8fee JB |
1139 | if (dp) |
1140 | { | |
1141 | Lisp_Object obj = DISP_CHAR_VECTOR (dp, lose); | |
1142 | ||
1143 | if (XTYPE (obj) == Lisp_Vector | |
1144 | && XVECTOR (obj)->size == 1 | |
1145 | && (XTYPE (obj = XVECTOR (obj)->contents[0]) | |
1146 | == Lisp_Int)) | |
1147 | no_redisplay = | |
1148 | direct_output_for_insert (XINT (obj)); | |
1149 | } | |
1150 | else | |
1151 | { | |
1152 | if (lose >= 0x20 && lose <= 0x7e) | |
1153 | no_redisplay = direct_output_for_insert (lose); | |
1154 | } | |
284f4730 JB |
1155 | } |
1156 | goto directly_done; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | /* Here for a command that isn't executed directly */ | |
1161 | ||
1162 | nonundocount = 0; | |
1163 | if (NILP (Vprefix_arg)) | |
1164 | Fundo_boundary (); | |
258bf746 | 1165 | Fcommand_execute (this_command, Qnil); |
284f4730 | 1166 | |
284f4730 | 1167 | } |
a764a753 | 1168 | directly_done: ; |
284f4730 | 1169 | |
86e5706b RS |
1170 | if (!NILP (Vpost_command_hook)) |
1171 | call1 (Vrun_hooks, Qpost_command_hook); | |
1172 | ||
284f4730 JB |
1173 | /* If there is a prefix argument, |
1174 | 1) We don't want last_command to be ``universal-argument'' | |
1175 | (that would be dumb), so don't set last_command, | |
1176 | 2) we want to leave echoing on so that the prefix will be | |
1177 | echoed as part of this key sequence, so don't call | |
1178 | cancel_echoing, and | |
1179 | 3) we want to leave this_command_key_count non-zero, so that | |
1180 | read_char will realize that it is re-reading a character, and | |
1181 | not echo it a second time. */ | |
1182 | if (NILP (Vprefix_arg)) | |
1183 | { | |
1184 | last_command = this_command; | |
1185 | cancel_echoing (); | |
1186 | this_command_key_count = 0; | |
1187 | } | |
86e5706b RS |
1188 | |
1189 | if (!NILP (current_buffer->mark_active)) | |
1190 | { | |
1191 | if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
1192 | { | |
1193 | current_buffer->mark_active = Qnil; | |
1194 | call1 (Vrun_hooks, intern ("deactivate-mark-hook")); | |
1195 | } | |
1196 | else if (current_buffer != prev_buffer || MODIFF != prev_modiff) | |
1197 | call1 (Vrun_hooks, intern ("activate-mark-hook")); | |
1198 | } | |
284f4730 JB |
1199 | } |
1200 | } | |
1201 | \f | |
1202 | /* Number of seconds between polling for input. */ | |
1203 | int polling_period; | |
1204 | ||
eb8c3be9 | 1205 | /* Nonzero means polling for input is temporarily suppressed. */ |
284f4730 JB |
1206 | int poll_suppress_count; |
1207 | ||
1208 | #ifdef POLL_FOR_INPUT | |
1209 | int polling_for_input; | |
1210 | ||
1211 | /* Handle an alarm once each second and read pending input | |
1212 | so as to handle a C-g if it comces in. */ | |
1213 | ||
1214 | SIGTYPE | |
1215 | input_poll_signal () | |
1216 | { | |
9ac0d9e0 JB |
1217 | if (interrupt_input_blocked == 0 |
1218 | && !waiting_for_input) | |
1219 | read_avail_input (0); | |
284f4730 JB |
1220 | signal (SIGALRM, input_poll_signal); |
1221 | alarm (polling_period); | |
1222 | } | |
1223 | ||
1224 | #endif | |
1225 | ||
1226 | /* Begin signals to poll for input, if they are appropriate. | |
1227 | This function is called unconditionally from various places. */ | |
1228 | ||
1229 | start_polling () | |
1230 | { | |
1231 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1232 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1233 | { |
1234 | poll_suppress_count--; | |
1235 | if (poll_suppress_count == 0) | |
1236 | { | |
1237 | signal (SIGALRM, input_poll_signal); | |
1238 | polling_for_input = 1; | |
1239 | alarm (polling_period); | |
1240 | } | |
1241 | } | |
1242 | #endif | |
1243 | } | |
1244 | ||
1245 | /* Turn off polling. */ | |
1246 | ||
1247 | stop_polling () | |
1248 | { | |
1249 | #ifdef POLL_FOR_INPUT | |
34f04431 | 1250 | if (read_socket_hook && !interrupt_input) |
284f4730 JB |
1251 | { |
1252 | if (poll_suppress_count == 0) | |
1253 | { | |
1254 | polling_for_input = 0; | |
1255 | alarm (0); | |
1256 | } | |
1257 | poll_suppress_count++; | |
1258 | } | |
1259 | #endif | |
1260 | } | |
fe8aeef3 RS |
1261 | |
1262 | /* Set the value of poll_suppress_count to COUNT | |
1263 | and start or stop polling accordingly. */ | |
1264 | ||
1265 | void | |
1266 | set_poll_suppress_count (count) | |
1267 | int count; | |
1268 | { | |
1269 | #ifdef POLL_FOR_INPUT | |
1270 | if (count == 0 && poll_suppress_count != 0) | |
1271 | { | |
1272 | poll_suppress_count = 1; | |
1273 | start_polling (); | |
1274 | } | |
1275 | else if (count != 0 && poll_suppress_count == 0) | |
1276 | { | |
1277 | stop_polling (); | |
1278 | } | |
1279 | poll_suppress_count = count; | |
1280 | #endif | |
1281 | } | |
284f4730 | 1282 | \f |
faf5e407 JB |
1283 | /* Applying the control modifier to CHARACTER. */ |
1284 | int | |
1285 | make_ctrl_char (c) | |
1286 | int c; | |
1287 | { | |
d205953b JB |
1288 | /* Save the upper bits here. */ |
1289 | int upper = c & ~0177; | |
1290 | ||
1291 | c &= 0177; | |
1292 | ||
1293 | /* Everything in the columns containing the upper-case letters | |
1294 | denotes a control character. */ | |
1295 | if (c >= 0100 && c < 0140) | |
1296 | { | |
1297 | int oc = c; | |
1298 | c &= ~0140; | |
1299 | /* Set the shift modifier for a control char | |
1300 | made from a shifted letter. But only for letters! */ | |
1301 | if (oc >= 'A' && oc <= 'Z') | |
1302 | c |= shift_modifier; | |
1303 | } | |
1304 | ||
1305 | /* The lower-case letters denote control characters too. */ | |
1306 | else if (c >= 'a' && c <= 'z') | |
1307 | c &= ~0140; | |
1308 | ||
1309 | /* Include the bits for control and shift | |
1310 | only if the basic ASCII code can't indicate them. */ | |
1311 | else if (c >= ' ') | |
1312 | c |= ctrl_modifier; | |
1313 | ||
1314 | /* Replace the high bits. */ | |
1315 | c |= (upper & ~ctrl_modifier); | |
faf5e407 JB |
1316 | |
1317 | return c; | |
1318 | } | |
1319 | ||
1320 | ||
1321 | \f | |
284f4730 JB |
1322 | /* Input of single characters from keyboard */ |
1323 | ||
1324 | Lisp_Object print_help (); | |
1325 | static Lisp_Object kbd_buffer_get_event (); | |
1326 | ||
1327 | /* read a character from the keyboard; call the redisplay if needed */ | |
1328 | /* commandflag 0 means do not do auto-saving, but do do redisplay. | |
1329 | -1 means do not do redisplay, but do do autosaving. | |
1330 | 1 means do both. */ | |
1331 | ||
7d6de002 RS |
1332 | /* The arguments MAPS and NMAPS are for menu prompting. |
1333 | MAPS is an array of keymaps; NMAPS is the length of MAPS. | |
1334 | ||
1335 | PREV_EVENT is the previous input event, or nil if we are reading | |
1336 | the first event of a key sequence. | |
1337 | ||
6569cc8d JB |
1338 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
1339 | if we used a mouse menu to read the input, or zero otherwise. If | |
dcc408a0 RS |
1340 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. |
1341 | ||
1342 | Value is t if we showed a menu and the user rejected it. */ | |
7d6de002 | 1343 | |
284f4730 | 1344 | Lisp_Object |
7d6de002 | 1345 | read_char (commandflag, nmaps, maps, prev_event, used_mouse_menu) |
284f4730 | 1346 | int commandflag; |
7d6de002 RS |
1347 | int nmaps; |
1348 | Lisp_Object *maps; | |
1349 | Lisp_Object prev_event; | |
1350 | int *used_mouse_menu; | |
284f4730 JB |
1351 | { |
1352 | register Lisp_Object c; | |
1353 | int count; | |
1354 | jmp_buf save_jump; | |
1355 | ||
dbc4e1c1 | 1356 | if (CONSP (unread_command_events)) |
284f4730 | 1357 | { |
dbc4e1c1 JB |
1358 | c = XCONS (unread_command_events)->car; |
1359 | unread_command_events = XCONS (unread_command_events)->cdr; | |
284f4730 | 1360 | |
284f4730 JB |
1361 | if (this_command_key_count == 0) |
1362 | goto reread_first; | |
1363 | else | |
1364 | goto reread; | |
1365 | } | |
1366 | ||
86e5706b RS |
1367 | if (unread_command_char != -1) |
1368 | { | |
1369 | XSET (c, Lisp_Int, unread_command_char); | |
1370 | unread_command_char = -1; | |
1371 | ||
1372 | if (this_command_key_count == 0) | |
1373 | goto reread_first; | |
1374 | else | |
1375 | goto reread; | |
1376 | } | |
1377 | ||
284f4730 JB |
1378 | if (!NILP (Vexecuting_macro)) |
1379 | { | |
07d2b8de | 1380 | #ifdef MULTI_FRAME |
fce33686 JB |
1381 | /* We set this to Qmacro; since that's not a frame, nobody will |
1382 | try to switch frames on us, and the selected window will | |
1383 | remain unchanged. | |
1384 | ||
1385 | Since this event came from a macro, it would be misleading to | |
eb8c3be9 | 1386 | leave internal_last_event_frame set to wherever the last |
3c370943 JB |
1387 | real event came from. Normally, a switch-frame event selects |
1388 | internal_last_event_frame after each command is read, but | |
1389 | events read from a macro should never cause a new frame to be | |
1390 | selected. */ | |
1391 | Vlast_event_frame = internal_last_event_frame = Qmacro; | |
07d2b8de | 1392 | #endif |
fce33686 | 1393 | |
663258f2 JB |
1394 | /* Exit the macro if we are at the end. |
1395 | Also, some things replace the macro with t | |
1396 | to force an early exit. */ | |
1397 | if (EQ (Vexecuting_macro, Qt) | |
1398 | || executing_macro_index >= XFASTINT (Flength (Vexecuting_macro))) | |
284f4730 JB |
1399 | { |
1400 | XSET (c, Lisp_Int, -1); | |
1401 | return c; | |
1402 | } | |
1403 | ||
1404 | c = Faref (Vexecuting_macro, make_number (executing_macro_index)); | |
86e5706b RS |
1405 | if (XTYPE (Vexecuting_macro) == Lisp_String |
1406 | && (XINT (c) & 0x80)) | |
1407 | XFASTINT (c) = CHAR_META | (XINT (c) & ~0x80); | |
1408 | ||
284f4730 JB |
1409 | executing_macro_index++; |
1410 | ||
1411 | goto from_macro; | |
1412 | } | |
1413 | ||
cd21b839 JB |
1414 | if (!NILP (unread_switch_frame)) |
1415 | { | |
1416 | c = unread_switch_frame; | |
1417 | unread_switch_frame = Qnil; | |
1418 | ||
1419 | /* This event should make it into this_command_keys, and get echoed | |
f4255cd1 JB |
1420 | again, so we go to reread_first, rather than reread. */ |
1421 | goto reread_first; | |
cd21b839 JB |
1422 | } |
1423 | ||
284f4730 | 1424 | /* Save outer setjmp data, in case called recursively. */ |
f76475ad | 1425 | save_getcjmp (save_jump); |
284f4730 JB |
1426 | |
1427 | stop_polling (); | |
1428 | ||
1429 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1430 | redisplay (); | |
1431 | ||
1432 | if (_setjmp (getcjmp)) | |
1433 | { | |
1434 | XSET (c, Lisp_Int, quit_char); | |
07d2b8de | 1435 | #ifdef MULTI_FRAME |
3c370943 JB |
1436 | XSET (internal_last_event_frame, Lisp_Frame, selected_frame); |
1437 | Vlast_event_frame = internal_last_event_frame; | |
07d2b8de | 1438 | #endif |
04904c29 RS |
1439 | /* If we report the quit char as an event, |
1440 | don't do so more than once. */ | |
1441 | if (!NILP (Vinhibit_quit)) | |
1442 | Vquit_flag = Qnil; | |
284f4730 | 1443 | |
284f4730 JB |
1444 | goto non_reread; |
1445 | } | |
1446 | ||
1447 | /* Message turns off echoing unless more keystrokes turn it on again. */ | |
1448 | if (echo_area_glyphs && *echo_area_glyphs && echo_area_glyphs != echobuf) | |
1449 | cancel_echoing (); | |
1450 | else | |
1451 | /* If already echoing, continue. */ | |
1452 | echo_dash (); | |
1453 | ||
1454 | /* If in middle of key sequence and minibuffer not active, | |
1455 | start echoing if enough time elapses. */ | |
1456 | if (minibuf_level == 0 && !immediate_echo && this_command_key_count > 0 | |
27203ead | 1457 | && ! noninteractive |
284f4730 JB |
1458 | && echo_keystrokes > 0 |
1459 | && (echo_area_glyphs == 0 || *echo_area_glyphs == 0)) | |
1460 | { | |
1461 | Lisp_Object tem0; | |
1462 | ||
7d6de002 RS |
1463 | /* After a mouse event, start echoing right away. |
1464 | This is because we are probably about to display a menu, | |
1465 | and we don't want to delay before doing so. */ | |
dbc4e1c1 | 1466 | if (EVENT_HAS_PARAMETERS (prev_event)) |
284f4730 | 1467 | echo (); |
7d6de002 RS |
1468 | else |
1469 | { | |
1470 | tem0 = sit_for (echo_keystrokes, 0, 1, 1); | |
1471 | if (EQ (tem0, Qt)) | |
1472 | echo (); | |
1473 | } | |
284f4730 JB |
1474 | } |
1475 | ||
1476 | /* Maybe auto save due to number of keystrokes or idle time. */ | |
1477 | ||
1478 | if (commandflag != 0 | |
1479 | && auto_save_interval > 0 | |
51172b6d | 1480 | && num_nonmacro_input_chars - last_auto_save > max (auto_save_interval, 20) |
284f4730 JB |
1481 | && !detect_input_pending ()) |
1482 | { | |
1483 | jmp_buf temp; | |
1484 | save_getcjmp (temp); | |
1485 | Fdo_auto_save (Qnil, Qnil); | |
1486 | restore_getcjmp (temp); | |
1487 | } | |
1488 | ||
7d6de002 RS |
1489 | /* Try reading a character via menu prompting. |
1490 | Try this before the sit-for, because the sit-for | |
1491 | would do the wrong thing if we are supposed to do | |
1492 | menu prompting. */ | |
1493 | c = Qnil; | |
1494 | if (INTERACTIVE && !NILP (prev_event)) | |
1495 | c = read_char_menu_prompt (nmaps, maps, prev_event, used_mouse_menu); | |
1496 | ||
284f4730 JB |
1497 | /* Slow down auto saves logarithmically in size of current buffer, |
1498 | and garbage collect while we're at it. */ | |
26c1639e | 1499 | if (INTERACTIVE && NILP (c)) |
7d6de002 RS |
1500 | { |
1501 | int delay_level, buffer_size; | |
1502 | ||
1503 | if (! MINI_WINDOW_P (XWINDOW (selected_window))) | |
1504 | last_non_minibuf_size = Z - BEG; | |
1505 | buffer_size = (last_non_minibuf_size >> 8) + 1; | |
1506 | delay_level = 0; | |
1507 | while (buffer_size > 64) | |
1508 | delay_level++, buffer_size -= buffer_size >> 2; | |
1509 | if (delay_level < 4) delay_level = 4; | |
1510 | /* delay_level is 4 for files under around 50k, 7 at 100k, | |
1511 | 9 at 200k, 11 at 300k, and 12 at 500k. It is 15 at 1 meg. */ | |
1512 | ||
1513 | /* Auto save if enough time goes by without input. */ | |
1514 | if (commandflag != 0 | |
51172b6d | 1515 | && num_nonmacro_input_chars > last_auto_save |
7d6de002 RS |
1516 | && XTYPE (Vauto_save_timeout) == Lisp_Int |
1517 | && XINT (Vauto_save_timeout) > 0) | |
1518 | { | |
1519 | Lisp_Object tem0; | |
1520 | int delay = delay_level * XFASTINT (Vauto_save_timeout) / 4; | |
1521 | tem0 = sit_for (delay, 0, 1, 1); | |
1522 | if (EQ (tem0, Qt)) | |
1523 | { | |
1524 | jmp_buf temp; | |
1525 | save_getcjmp (temp); | |
1526 | Fdo_auto_save (Qnil, Qnil); | |
1527 | restore_getcjmp (temp); | |
1528 | ||
1529 | /* If we have auto-saved and there is still no input | |
1530 | available, garbage collect if there has been enough | |
1531 | consing going on to make it worthwhile. */ | |
1532 | if (!detect_input_pending () | |
1533 | && consing_since_gc > gc_cons_threshold / 2) | |
7e85b935 RS |
1534 | { |
1535 | Fgarbage_collect (); | |
1536 | redisplay (); | |
1537 | } | |
7d6de002 RS |
1538 | } |
1539 | } | |
1540 | } | |
284f4730 JB |
1541 | |
1542 | /* Actually read a character, waiting if necessary. */ | |
4eb4f926 | 1543 | while (NILP (c)) |
1e12dd87 RS |
1544 | { |
1545 | c = kbd_buffer_get_event (); | |
1546 | if (!NILP (c)) | |
1547 | break; | |
1548 | if (commandflag >= 0 && !input_pending && !detect_input_pending ()) | |
1549 | redisplay (); | |
1550 | } | |
284f4730 | 1551 | |
284f4730 | 1552 | /* Terminate Emacs in batch mode if at eof. */ |
7d6de002 | 1553 | if (noninteractive && XTYPE (c) == Lisp_Int && XINT (c) < 0) |
284f4730 JB |
1554 | Fkill_emacs (make_number (1)); |
1555 | ||
80645119 JB |
1556 | if (XTYPE (c) == Lisp_Int) |
1557 | { | |
1558 | /* Add in any extra modifiers, where appropriate. */ | |
1559 | if ((extra_keyboard_modifiers & CHAR_CTL) | |
1560 | || ((extra_keyboard_modifiers & 0177) < ' ' | |
1561 | && (extra_keyboard_modifiers & 0177) != 0)) | |
faf5e407 | 1562 | XSETINT (c, make_ctrl_char (XINT (c))); |
80645119 JB |
1563 | |
1564 | /* Transfer any other modifier bits directly from | |
1565 | extra_keyboard_modifiers to c. Ignore the actual character code | |
1566 | in the low 16 bits of extra_keyboard_modifiers. */ | |
b8d9050d | 1567 | XSETINT (c, XINT (c) | (extra_keyboard_modifiers & ~0xff7f & ~CHAR_CTL)); |
80645119 | 1568 | } |
9fa4395d | 1569 | |
284f4730 JB |
1570 | non_reread: |
1571 | ||
f76475ad | 1572 | restore_getcjmp (save_jump); |
284f4730 JB |
1573 | |
1574 | start_polling (); | |
1575 | ||
1576 | echo_area_glyphs = 0; | |
1577 | ||
1578 | /* Handle things that only apply to characters. */ | |
1579 | if (XTYPE (c) == Lisp_Int) | |
1580 | { | |
1581 | /* If kbd_buffer_get_event gave us an EOF, return that. */ | |
86e5706b | 1582 | if (XINT (c) == -1) |
284f4730 JB |
1583 | return c; |
1584 | ||
284f4730 | 1585 | if (XTYPE (Vkeyboard_translate_table) == Lisp_String |
f4255cd1 JB |
1586 | && XSTRING (Vkeyboard_translate_table)->size > XFASTINT (c)) |
1587 | XSETINT (c, XSTRING (Vkeyboard_translate_table)->data[XFASTINT (c)]); | |
284f4730 JB |
1588 | } |
1589 | ||
1590 | total_keys++; | |
5160df46 JB |
1591 | XVECTOR (recent_keys)->contents[recent_keys_index] = c; |
1592 | if (++recent_keys_index >= NUM_RECENT_KEYS) | |
284f4730 JB |
1593 | recent_keys_index = 0; |
1594 | ||
1595 | /* Write c to the dribble file. If c is a lispy event, write | |
1596 | the event's symbol to the dribble file, in <brackets>. Bleaugh. | |
1597 | If you, dear reader, have a better idea, you've got the source. :-) */ | |
1598 | if (dribble) | |
1599 | { | |
1600 | if (XTYPE (c) == Lisp_Int) | |
f4255cd1 | 1601 | putc (XINT (c), dribble); |
284f4730 JB |
1602 | else |
1603 | { | |
1604 | Lisp_Object dribblee = c; | |
1605 | ||
1606 | /* If it's a structured event, take the event header. */ | |
88cb0656 | 1607 | dribblee = EVENT_HEAD (dribblee); |
284f4730 | 1608 | |
8f805655 | 1609 | if (XTYPE (dribblee) == Lisp_Symbol) |
284f4730 JB |
1610 | { |
1611 | putc ('<', dribble); | |
8f805655 JB |
1612 | fwrite (XSYMBOL (dribblee)->name->data, sizeof (char), |
1613 | XSYMBOL (dribblee)->name->size, | |
284f4730 JB |
1614 | dribble); |
1615 | putc ('>', dribble); | |
1616 | } | |
1617 | } | |
1618 | ||
1619 | fflush (dribble); | |
1620 | } | |
1621 | ||
1622 | store_kbd_macro_char (c); | |
1623 | ||
51172b6d RS |
1624 | num_nonmacro_input_chars++; |
1625 | ||
284f4730 JB |
1626 | from_macro: |
1627 | reread_first: | |
284f4730 | 1628 | |
4bb994d1 JB |
1629 | /* Record this character as part of the current key. |
1630 | Don't record mouse motion; it should never matter. */ | |
1631 | if (! (EVENT_HAS_PARAMETERS (c) | |
1632 | && EQ (EVENT_HEAD_KIND (EVENT_HEAD (c)), Qmouse_movement))) | |
7b4aedb9 JB |
1633 | { |
1634 | echo_char (c); | |
1635 | add_command_key (c); | |
1636 | } | |
284f4730 JB |
1637 | |
1638 | /* Re-reading in the middle of a command */ | |
1639 | reread: | |
1640 | last_input_char = c; | |
1641 | num_input_chars++; | |
1642 | ||
1643 | /* Process the help character specially if enabled */ | |
7e85b935 | 1644 | if (EQ (c, Vhelp_char) && !NILP (Vhelp_form)) |
284f4730 JB |
1645 | { |
1646 | Lisp_Object tem0; | |
1647 | count = specpdl_ptr - specpdl; | |
1648 | ||
1649 | record_unwind_protect (Fset_window_configuration, | |
1650 | Fcurrent_window_configuration (Qnil)); | |
1651 | ||
1652 | tem0 = Feval (Vhelp_form); | |
1653 | if (XTYPE (tem0) == Lisp_String) | |
1654 | internal_with_output_to_temp_buffer ("*Help*", print_help, tem0); | |
1655 | ||
1656 | cancel_echoing (); | |
6569cc8d | 1657 | c = read_char (0, 0, 0, Qnil, 0); |
ff11dfa1 | 1658 | /* Remove the help from the frame */ |
284f4730 JB |
1659 | unbind_to (count, Qnil); |
1660 | redisplay (); | |
1661 | if (EQ (c, make_number (040))) | |
1662 | { | |
1663 | cancel_echoing (); | |
7d6de002 | 1664 | c = read_char (0, 0, 0, Qnil, 0); |
284f4730 JB |
1665 | } |
1666 | } | |
1667 | ||
1668 | return c; | |
1669 | } | |
1670 | ||
1671 | Lisp_Object | |
1672 | print_help (object) | |
1673 | Lisp_Object object; | |
1674 | { | |
1675 | Fprinc (object, Qnil); | |
1676 | return Qnil; | |
1677 | } | |
1678 | ||
1679 | /* Copy out or in the info on where C-g should throw to. | |
1680 | This is used when running Lisp code from within get_char, | |
1681 | in case get_char is called recursively. | |
1682 | See read_process_output. */ | |
1683 | ||
1684 | save_getcjmp (temp) | |
1685 | jmp_buf temp; | |
1686 | { | |
1687 | bcopy (getcjmp, temp, sizeof getcjmp); | |
1688 | } | |
1689 | ||
1690 | restore_getcjmp (temp) | |
1691 | jmp_buf temp; | |
1692 | { | |
1693 | bcopy (temp, getcjmp, sizeof getcjmp); | |
1694 | } | |
1695 | ||
1696 | \f | |
284f4730 JB |
1697 | /* Restore mouse tracking enablement. See Ftrack_mouse for the only use |
1698 | of this function. */ | |
1699 | static Lisp_Object | |
1700 | tracking_off (old_value) | |
1701 | Lisp_Object old_value; | |
1702 | { | |
1703 | if (! XFASTINT (old_value)) | |
1704 | { | |
1705 | do_mouse_tracking = 0; | |
1706 | ||
1707 | /* Redisplay may have been preempted because there was input | |
1708 | available, and it assumes it will be called again after the | |
1709 | input has been processed. If the only input available was | |
1710 | the sort that we have just disabled, then we need to call | |
1711 | redisplay. */ | |
1712 | if (!readable_events ()) | |
1713 | { | |
1714 | redisplay_preserve_echo_area (); | |
1715 | get_input_pending (&input_pending); | |
1716 | } | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | DEFUN ("track-mouse", Ftrack_mouse, Strack_mouse, 0, UNEVALLED, 0, | |
4bb994d1 JB |
1721 | "Evaluate BODY with mouse movement events enabled.\n\ |
1722 | Within a `track-mouse' form, mouse motion generates input events that\n\ | |
1723 | you can read with `read-event'.\n\ | |
1724 | Normally, mouse motion is ignored.") | |
284f4730 JB |
1725 | (args) |
1726 | Lisp_Object args; | |
1727 | { | |
1728 | int count = specpdl_ptr - specpdl; | |
1729 | Lisp_Object val; | |
1730 | ||
1731 | XSET (val, Lisp_Int, do_mouse_tracking); | |
1732 | record_unwind_protect (tracking_off, val); | |
1733 | ||
1734 | do_mouse_tracking = 1; | |
1735 | ||
1736 | val = Fprogn (args); | |
1737 | return unbind_to (count, val); | |
1738 | } | |
a612e298 RS |
1739 | \f |
1740 | /* Low level keyboard/mouse input. | |
1741 | kbd_buffer_store_event places events in kbd_buffer, and | |
1742 | kbd_buffer_get_event retrieves them. | |
1743 | mouse_moved indicates when the mouse has moved again, and | |
1744 | *mouse_position_hook provides the mouse position. */ | |
1745 | ||
1746 | /* Return true iff there are any events in the queue that read-char | |
1747 | would return. If this returns false, a read-char would block. */ | |
1748 | static int | |
1749 | readable_events () | |
1750 | { | |
1751 | return ! EVENT_QUEUES_EMPTY; | |
1752 | } | |
1753 | ||
1754 | /* Set this for debugging, to have a way to get out */ | |
1755 | int stop_character; | |
284f4730 JB |
1756 | |
1757 | /* Store an event obtained at interrupt level into kbd_buffer, fifo */ | |
1758 | ||
1759 | void | |
1760 | kbd_buffer_store_event (event) | |
1761 | register struct input_event *event; | |
1762 | { | |
1763 | if (event->kind == no_event) | |
1764 | abort (); | |
1765 | ||
1766 | if (event->kind == ascii_keystroke) | |
1767 | { | |
1768 | register int c = XFASTINT (event->code) & 0377; | |
1769 | ||
faf5e407 JB |
1770 | if (event->modifiers & ctrl_modifier) |
1771 | c = make_ctrl_char (c); | |
1772 | ||
9fd7d808 RS |
1773 | c |= (event->modifiers |
1774 | & (meta_modifier | alt_modifier | |
1775 | | hyper_modifier | super_modifier)); | |
1776 | ||
86e5706b | 1777 | if (c == quit_char) |
284f4730 | 1778 | { |
3e51c7b7 JB |
1779 | extern SIGTYPE interrupt_signal (); |
1780 | ||
07d2b8de | 1781 | #ifdef MULTI_FRAME |
284f4730 | 1782 | /* If this results in a quit_char being returned to Emacs as |
3c370943 | 1783 | input, set Vlast_event_frame properly. If this doesn't |
284f4730 | 1784 | get returned to Emacs as an event, the next event read |
ff11dfa1 | 1785 | will set Vlast_event_frame again, so this is safe to do. */ |
4bb994d1 | 1786 | { |
27203ead RS |
1787 | Lisp_Object focus |
1788 | = FRAME_FOCUS_FRAME (XFRAME (event->frame_or_window)); | |
4bb994d1 JB |
1789 | |
1790 | if (NILP (focus)) | |
3c370943 | 1791 | internal_last_event_frame = event->frame_or_window; |
4bb994d1 | 1792 | else |
3c370943 JB |
1793 | internal_last_event_frame = focus; |
1794 | Vlast_event_frame = internal_last_event_frame; | |
4bb994d1 | 1795 | } |
07d2b8de | 1796 | #endif |
3e51c7b7 | 1797 | |
ffd56f97 | 1798 | last_event_timestamp = event->timestamp; |
284f4730 JB |
1799 | interrupt_signal (); |
1800 | return; | |
1801 | } | |
1802 | ||
1803 | if (c && c == stop_character) | |
1804 | { | |
1805 | sys_suspend (); | |
1806 | return; | |
1807 | } | |
284f4730 JB |
1808 | } |
1809 | ||
1810 | if (kbd_store_ptr - kbd_buffer == KBD_BUFFER_SIZE) | |
1811 | kbd_store_ptr = kbd_buffer; | |
1812 | ||
1813 | /* Don't let the very last slot in the buffer become full, | |
1814 | since that would make the two pointers equal, | |
1815 | and that is indistinguishable from an empty buffer. | |
1816 | Discard the event if it would fill the last slot. */ | |
1817 | if (kbd_fetch_ptr - 1 != kbd_store_ptr) | |
1818 | { | |
1819 | kbd_store_ptr->kind = event->kind; | |
27203ead RS |
1820 | if (event->kind == selection_request_event) |
1821 | { | |
1822 | /* We must not use the ordinary copying code for this case, | |
1823 | since `part' is an enum and copying it might not copy enough | |
1824 | in this case. */ | |
1825 | bcopy (event, kbd_store_ptr, sizeof (*event)); | |
1826 | } | |
1827 | else | |
1828 | { | |
1829 | kbd_store_ptr->code = event->code; | |
1830 | kbd_store_ptr->part = event->part; | |
1831 | kbd_store_ptr->frame_or_window = event->frame_or_window; | |
1832 | kbd_store_ptr->modifiers = event->modifiers; | |
1833 | kbd_store_ptr->x = event->x; | |
1834 | kbd_store_ptr->y = event->y; | |
1835 | kbd_store_ptr->timestamp = event->timestamp; | |
1836 | } | |
7b4aedb9 JB |
1837 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_store_ptr |
1838 | - kbd_buffer] | |
1839 | = event->frame_or_window); | |
284f4730 JB |
1840 | |
1841 | kbd_store_ptr++; | |
1842 | } | |
1843 | } | |
a612e298 RS |
1844 | \f |
1845 | /* Read one event from the event buffer, waiting if necessary. | |
1846 | The value is a Lisp object representing the event. | |
1847 | The value is nil for an event that should be ignored, | |
1848 | or that was handled here. | |
1849 | We always read and discard one event. */ | |
284f4730 JB |
1850 | |
1851 | static Lisp_Object | |
1852 | kbd_buffer_get_event () | |
1853 | { | |
1854 | register int c; | |
1855 | Lisp_Object obj; | |
1856 | ||
1857 | if (noninteractive) | |
1858 | { | |
1859 | c = getchar (); | |
1860 | XSET (obj, Lisp_Int, c); | |
1861 | return obj; | |
1862 | } | |
1863 | ||
1864 | /* Wait until there is input available. */ | |
1865 | for (;;) | |
1866 | { | |
284f4730 JB |
1867 | if (!EVENT_QUEUES_EMPTY) |
1868 | break; | |
1869 | ||
1870 | /* If the quit flag is set, then read_char will return | |
1871 | quit_char, so that counts as "available input." */ | |
1872 | if (!NILP (Vquit_flag)) | |
1873 | quit_throw_to_read_char (); | |
1874 | ||
1875 | /* One way or another, wait until input is available; then, if | |
1876 | interrupt handlers have not read it, read it now. */ | |
1877 | ||
1878 | #ifdef OLDVMS | |
1879 | wait_for_kbd_input (); | |
1880 | #else | |
1881 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
1882 | #ifdef SIGIO | |
1883 | gobble_input (0); | |
1884 | #endif /* SIGIO */ | |
1885 | if (EVENT_QUEUES_EMPTY) | |
1886 | { | |
f76475ad JB |
1887 | Lisp_Object minus_one; |
1888 | ||
1889 | XSET (minus_one, Lisp_Int, -1); | |
1890 | wait_reading_process_input (0, 0, minus_one, 1); | |
284f4730 JB |
1891 | |
1892 | if (!interrupt_input && EVENT_QUEUES_EMPTY) | |
1893 | { | |
1894 | read_avail_input (0); | |
1895 | } | |
1896 | } | |
1897 | #endif /* not VMS */ | |
1898 | } | |
1899 | ||
1900 | /* At this point, we know that there is a readable event available | |
1901 | somewhere. If the event queue is empty, then there must be a | |
1902 | mouse movement enabled and available. */ | |
1903 | if (kbd_fetch_ptr != kbd_store_ptr) | |
1904 | { | |
cd21b839 | 1905 | struct input_event *event; |
3e51c7b7 | 1906 | |
856bf263 | 1907 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) |
cd21b839 JB |
1908 | ? kbd_fetch_ptr |
1909 | : kbd_buffer); | |
3e51c7b7 | 1910 | |
cd21b839 | 1911 | last_event_timestamp = event->timestamp; |
cd21b839 | 1912 | |
4bb994d1 JB |
1913 | obj = Qnil; |
1914 | ||
48e416d4 | 1915 | /* These two kinds of events get special handling |
a612e298 RS |
1916 | and don't actually appear to the command loop. |
1917 | We return nil for them. */ | |
48e416d4 RS |
1918 | if (event->kind == selection_request_event) |
1919 | { | |
598a9fa7 | 1920 | #ifdef HAVE_X11 |
48e416d4 RS |
1921 | x_handle_selection_request (event); |
1922 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
1923 | #else |
1924 | /* We're getting selection request events, but we don't have | |
1925 | a window system. */ | |
1926 | abort (); | |
1927 | #endif | |
48e416d4 RS |
1928 | } |
1929 | ||
1e12dd87 | 1930 | else if (event->kind == selection_clear_event) |
48e416d4 | 1931 | { |
598a9fa7 | 1932 | #ifdef HAVE_X11 |
48e416d4 RS |
1933 | x_handle_selection_clear (event); |
1934 | kbd_fetch_ptr = event + 1; | |
598a9fa7 JB |
1935 | #else |
1936 | /* We're getting selection request events, but we don't have | |
1937 | a window system. */ | |
1938 | abort (); | |
1939 | #endif | |
48e416d4 | 1940 | } |
a612e298 RS |
1941 | /* Just discard these, by returning nil. |
1942 | (They shouldn't be found in the buffer, | |
1943 | but on some machines it appears they do show up.) */ | |
1944 | else if (event->kind == no_event) | |
1945 | kbd_fetch_ptr = event + 1; | |
48e416d4 | 1946 | |
4bb994d1 JB |
1947 | /* If this event is on a different frame, return a switch-frame this |
1948 | time, and leave the event in the queue for next time. */ | |
1e12dd87 RS |
1949 | else |
1950 | { | |
a6d53864 | 1951 | #ifdef MULTI_FRAME |
1e12dd87 RS |
1952 | Lisp_Object frame = event->frame_or_window; |
1953 | Lisp_Object focus; | |
7b4aedb9 | 1954 | |
1e12dd87 RS |
1955 | if (XTYPE (frame) == Lisp_Window) |
1956 | frame = WINDOW_FRAME (XWINDOW (frame)); | |
4bb994d1 | 1957 | |
1e12dd87 RS |
1958 | focus = FRAME_FOCUS_FRAME (XFRAME (frame)); |
1959 | if (! NILP (focus)) | |
1960 | frame = focus; | |
07d2b8de | 1961 | |
1e12dd87 RS |
1962 | if (! EQ (frame, internal_last_event_frame) |
1963 | && XFRAME (frame) != selected_frame) | |
1964 | obj = make_lispy_switch_frame (frame); | |
1965 | internal_last_event_frame = frame; | |
a6d53864 | 1966 | #endif /* MULTI_FRAME */ |
4bb994d1 | 1967 | |
1e12dd87 RS |
1968 | /* If we didn't decide to make a switch-frame event, go ahead |
1969 | and build a real event from the queue entry. */ | |
cd21b839 | 1970 | |
1e12dd87 RS |
1971 | if (NILP (obj)) |
1972 | { | |
1973 | obj = make_lispy_event (event); | |
1974 | ||
1975 | /* Wipe out this event, to catch bugs. */ | |
1976 | event->kind = no_event; | |
1977 | (XVECTOR (kbd_buffer_frame_or_window)->contents[event - kbd_buffer] | |
1978 | = Qnil); | |
1979 | ||
1980 | kbd_fetch_ptr = event + 1; | |
1981 | } | |
4bb994d1 | 1982 | } |
284f4730 | 1983 | } |
a612e298 | 1984 | /* Try generating a mouse motion event. */ |
284f4730 JB |
1985 | else if (do_mouse_tracking && mouse_moved) |
1986 | { | |
7e85b935 | 1987 | FRAME_PTR f = 0; |
7b4aedb9 | 1988 | Lisp_Object bar_window; |
3c370943 | 1989 | enum scroll_bar_part part; |
e5d77022 JB |
1990 | Lisp_Object x, y; |
1991 | unsigned long time; | |
284f4730 | 1992 | |
7b4aedb9 | 1993 | (*mouse_position_hook) (&f, &bar_window, &part, &x, &y, &time); |
4bb994d1 JB |
1994 | |
1995 | obj = Qnil; | |
284f4730 | 1996 | |
07d2b8de | 1997 | #ifdef MULTI_FRAME |
4bb994d1 JB |
1998 | /* Decide if we should generate a switch-frame event. Don't |
1999 | generate switch-frame events for motion outside of all Emacs | |
2000 | frames. */ | |
2001 | if (f) | |
cd21b839 | 2002 | { |
4bb994d1 JB |
2003 | Lisp_Object frame = FRAME_FOCUS_FRAME (f); |
2004 | ||
2005 | if (NILP (frame)) | |
2006 | XSET (frame, Lisp_Frame, f); | |
2007 | ||
80645119 JB |
2008 | if (! EQ (frame, internal_last_event_frame) |
2009 | && XFRAME (frame) != selected_frame) | |
764cb3f9 | 2010 | obj = make_lispy_switch_frame (frame); |
80645119 | 2011 | internal_last_event_frame = frame; |
cd21b839 | 2012 | } |
07d2b8de | 2013 | #endif |
4bb994d1 JB |
2014 | |
2015 | /* If we didn't decide to make a switch-frame event, go ahead and | |
2016 | return a mouse-motion event. */ | |
2017 | if (NILP (obj)) | |
7b4aedb9 | 2018 | obj = make_lispy_movement (f, bar_window, part, x, y, time); |
4bb994d1 | 2019 | } |
284f4730 JB |
2020 | else |
2021 | /* We were promised by the above while loop that there was | |
2022 | something for us to read! */ | |
2023 | abort (); | |
2024 | ||
2025 | input_pending = readable_events (); | |
2026 | ||
3c370943 JB |
2027 | #ifdef MULTI_FRAME |
2028 | Vlast_event_frame = internal_last_event_frame; | |
2029 | #endif | |
2030 | ||
284f4730 JB |
2031 | return (obj); |
2032 | } | |
a612e298 RS |
2033 | \f |
2034 | /* Process any events that are not user-visible, | |
2035 | then return, without reading any user-visible events. */ | |
3a3b9632 RS |
2036 | |
2037 | void | |
2038 | swallow_events () | |
2039 | { | |
2040 | while (kbd_fetch_ptr != kbd_store_ptr) | |
2041 | { | |
2042 | struct input_event *event; | |
2043 | ||
2044 | event = ((kbd_fetch_ptr < kbd_buffer + KBD_BUFFER_SIZE) | |
2045 | ? kbd_fetch_ptr | |
2046 | : kbd_buffer); | |
2047 | ||
2048 | last_event_timestamp = event->timestamp; | |
2049 | ||
2050 | /* These two kinds of events get special handling | |
2051 | and don't actually appear to the command loop. */ | |
2052 | if (event->kind == selection_request_event) | |
2053 | { | |
2054 | #ifdef HAVE_X11 | |
2055 | x_handle_selection_request (event); | |
2056 | kbd_fetch_ptr = event + 1; | |
2057 | #else | |
2058 | /* We're getting selection request events, but we don't have | |
2059 | a window system. */ | |
2060 | abort (); | |
2061 | #endif | |
2062 | } | |
2063 | ||
2064 | else if (event->kind == selection_clear_event) | |
2065 | { | |
2066 | #ifdef HAVE_X11 | |
2067 | x_handle_selection_clear (event); | |
2068 | kbd_fetch_ptr = event + 1; | |
2069 | #else | |
2070 | /* We're getting selection request events, but we don't have | |
2071 | a window system. */ | |
2072 | abort (); | |
2073 | #endif | |
2074 | } | |
2075 | else | |
2076 | break; | |
2077 | } | |
2078 | ||
2079 | get_input_pending (&input_pending); | |
2080 | } | |
a612e298 | 2081 | \f |
284f4730 JB |
2082 | /* Caches for modify_event_symbol. */ |
2083 | static Lisp_Object func_key_syms; | |
2084 | static Lisp_Object mouse_syms; | |
2085 | ||
2086 | /* You'll notice that this table is arranged to be conveniently | |
2087 | indexed by X Windows keysym values. */ | |
2088 | static char *lispy_function_keys[] = | |
2089 | { | |
2090 | /* X Keysym value */ | |
2091 | ||
a6d53864 | 2092 | "remove", 0, 0, 0, 0, 0, 0, 0, /* 0xff00 */ |
86e5706b RS |
2093 | "backspace", |
2094 | "tab", | |
2095 | "linefeed", | |
2096 | "clear", | |
2097 | 0, | |
2098 | "return", | |
2099 | 0, 0, | |
2100 | 0, 0, 0, /* 0xff10 */ | |
2101 | "pause", | |
2102 | 0, 0, 0, 0, 0, 0, 0, | |
2103 | "escape", | |
2104 | 0, 0, 0, 0, | |
2105 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff20...2f */ | |
2106 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff30...3f */ | |
2107 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xff40...4f */ | |
2108 | ||
284f4730 JB |
2109 | "home", /* 0xff50 */ /* IsCursorKey */ |
2110 | "left", | |
2111 | "up", | |
2112 | "right", | |
2113 | "down", | |
2114 | "prior", | |
2115 | "next", | |
2116 | "end", | |
2117 | "begin", | |
2118 | 0, /* 0xff59 */ | |
2119 | 0, 0, 0, 0, 0, 0, | |
2120 | "select", /* 0xff60 */ /* IsMiscFunctionKey */ | |
2121 | "print", | |
2122 | "execute", | |
2123 | "insert", | |
2124 | 0, /* 0xff64 */ | |
2125 | "undo", | |
2126 | "redo", | |
2127 | "menu", | |
2128 | "find", | |
2129 | "cancel", | |
2130 | "help", | |
2131 | "break", /* 0xff6b */ | |
2132 | ||
2133 | /* Here are some keys found mostly on HP keyboards. The X event | |
2134 | handling code will strip bit 29, which flags vendor-specific | |
2135 | keysyms. */ | |
2136 | "reset", /* 0x1000ff6c */ | |
2137 | "system", | |
2138 | "user", | |
2139 | "clearline", | |
2140 | "insertline", | |
2141 | "deleteline", | |
2142 | "insertchar", | |
2143 | "deletechar", | |
2144 | "backtab", | |
36ae397e | 2145 | "kp-backtab", /* 0x1000ff75 */ |
284f4730 | 2146 | 0, /* 0xff76 */ |
36ae397e | 2147 | 0, 0, 0, 0, 0, 0, 0, 0, "kp-numlock", /* 0xff7f */ |
284f4730 JB |
2148 | "kp-space", /* 0xff80 */ /* IsKeypadKey */ |
2149 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2150 | "kp-tab", /* 0xff89 */ | |
2151 | 0, 0, 0, | |
2152 | "kp-enter", /* 0xff8d */ | |
2153 | 0, 0, 0, | |
2154 | "kp-f1", /* 0xff91 */ | |
2155 | "kp-f2", | |
2156 | "kp-f3", | |
2157 | "kp-f4", | |
2158 | 0, /* 0xff95 */ | |
2159 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
2160 | "kp-multiply", /* 0xffaa */ | |
2161 | "kp-add", | |
2162 | "kp-separator", | |
2163 | "kp-subtract", | |
2164 | "kp-decimal", | |
2165 | "kp-divide", /* 0xffaf */ | |
2166 | "kp-0", /* 0xffb0 */ | |
2167 | "kp-1", "kp-2", "kp-3", "kp-4", "kp-5", "kp-6", "kp-7", "kp-8", "kp-9", | |
2168 | 0, /* 0xffba */ | |
2169 | 0, 0, | |
2170 | "kp-equal", /* 0xffbd */ | |
2171 | "f1", /* 0xffbe */ /* IsFunctionKey */ | |
86e5706b RS |
2172 | "f2", |
2173 | "f3", "f4", "f5", "f6", "f7", "f8", "f9", "f10", /* 0xffc0 */ | |
2174 | "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", | |
2175 | "f19", "f20", "f21", "f22", "f23", "f24", "f25", "f26", /* 0xffd0 */ | |
2176 | "f27", "f28", "f29", "f30", "f31", "f32", "f33", "f34", | |
2177 | "f35", 0, 0, 0, 0, 0, 0, 0, /* 0xffe0 */ | |
2178 | 0, 0, 0, 0, 0, 0, 0, 0, | |
2179 | 0, 0, 0, 0, 0, 0, 0, 0, /* 0xfff0 */ | |
2180 | 0, 0, 0, 0, 0, 0, 0, "delete" | |
284f4730 JB |
2181 | }; |
2182 | ||
2183 | static char *lispy_mouse_names[] = | |
2184 | { | |
2185 | "mouse-1", "mouse-2", "mouse-3", "mouse-4", "mouse-5" | |
2186 | }; | |
2187 | ||
3c370943 | 2188 | /* Scroll bar parts. */ |
4bb994d1 JB |
2189 | Lisp_Object Qabove_handle, Qhandle, Qbelow_handle; |
2190 | ||
3c370943 JB |
2191 | /* An array of scroll bar parts, indexed by an enum scroll_bar_part value. */ |
2192 | Lisp_Object *scroll_bar_parts[] = { | |
4bb994d1 JB |
2193 | &Qabove_handle, &Qhandle, &Qbelow_handle |
2194 | }; | |
2195 | ||
2196 | ||
7b4aedb9 | 2197 | /* A vector, indexed by button number, giving the down-going location |
3c370943 | 2198 | of currently depressed buttons, both scroll bar and non-scroll bar. |
7b4aedb9 JB |
2199 | |
2200 | The elements have the form | |
2201 | (BUTTON-NUMBER MODIFIER-MASK . REST) | |
2202 | where REST is the cdr of a position as it would be reported in the event. | |
2203 | ||
2204 | The make_lispy_event function stores positions here to tell the | |
2205 | difference between click and drag events, and to store the starting | |
2206 | location to be included in drag events. */ | |
2207 | ||
2208 | static Lisp_Object button_down_location; | |
88cb0656 | 2209 | |
fbcd35bd JB |
2210 | /* Information about the most recent up-going button event: Which |
2211 | button, what location, and what time. */ | |
2212 | ||
559f9d04 RS |
2213 | static int last_mouse_button; |
2214 | static int last_mouse_x; | |
2215 | static int last_mouse_y; | |
2216 | static unsigned long button_down_time; | |
fbcd35bd | 2217 | |
564dc952 JB |
2218 | /* The maximum time between clicks to make a double-click, |
2219 | or Qnil to disable double-click detection, | |
2220 | or Qt for no time limit. */ | |
2221 | Lisp_Object Vdouble_click_time; | |
fbcd35bd JB |
2222 | |
2223 | /* The number of clicks in this multiple-click. */ | |
2224 | ||
2225 | int double_click_count; | |
2226 | ||
284f4730 JB |
2227 | /* Given a struct input_event, build the lisp event which represents |
2228 | it. If EVENT is 0, build a mouse movement event from the mouse | |
88cb0656 JB |
2229 | movement buffer, which should have a movement event in it. |
2230 | ||
2231 | Note that events must be passed to this function in the order they | |
2232 | are received; this function stores the location of button presses | |
2233 | in order to build drag events when the button is released. */ | |
284f4730 JB |
2234 | |
2235 | static Lisp_Object | |
2236 | make_lispy_event (event) | |
2237 | struct input_event *event; | |
2238 | { | |
2239 | #ifdef SWITCH_ENUM_BUG | |
2240 | switch ((int) event->kind) | |
2241 | #else | |
2242 | switch (event->kind) | |
2243 | #endif | |
2244 | { | |
284f4730 JB |
2245 | /* A simple keystroke. */ |
2246 | case ascii_keystroke: | |
86e5706b | 2247 | { |
2e3b94e7 | 2248 | int c = XFASTINT (event->code) & 0377; |
5a1c6df8 JB |
2249 | /* Turn ASCII characters into control characters |
2250 | when proper. */ | |
2251 | if (event->modifiers & ctrl_modifier) | |
d205953b JB |
2252 | c = make_ctrl_char (c); |
2253 | ||
2254 | /* Add in the other modifier bits. We took care of ctrl_modifier | |
2255 | just above, and the shift key was taken care of by the X code, | |
2256 | and applied to control characters by make_ctrl_char. */ | |
86e5706b RS |
2257 | c |= (event->modifiers |
2258 | & (meta_modifier | alt_modifier | |
2259 | | hyper_modifier | super_modifier)); | |
559f9d04 | 2260 | button_down_time = 0; |
86e5706b RS |
2261 | return c; |
2262 | } | |
284f4730 JB |
2263 | |
2264 | /* A function key. The symbol may need to have modifier prefixes | |
2265 | tacked onto it. */ | |
2266 | case non_ascii_keystroke: | |
559f9d04 | 2267 | button_down_time = 0; |
284f4730 JB |
2268 | return modify_event_symbol (XFASTINT (event->code), event->modifiers, |
2269 | Qfunction_key, | |
2270 | lispy_function_keys, &func_key_syms, | |
2271 | (sizeof (lispy_function_keys) | |
2272 | / sizeof (lispy_function_keys[0]))); | |
2273 | break; | |
2274 | ||
88cb0656 JB |
2275 | /* A mouse click. Figure out where it is, decide whether it's |
2276 | a press, click or drag, and build the appropriate structure. */ | |
284f4730 | 2277 | case mouse_click: |
3c370943 | 2278 | case scroll_bar_click: |
284f4730 | 2279 | { |
0a7f1fc0 | 2280 | int button = XFASTINT (event->code); |
559f9d04 | 2281 | int is_double; |
7b4aedb9 | 2282 | Lisp_Object position; |
dbc4e1c1 JB |
2283 | Lisp_Object *start_pos_ptr; |
2284 | Lisp_Object start_pos; | |
284f4730 | 2285 | |
7b4aedb9 | 2286 | if (button < 0 || button >= NUM_MOUSE_BUTTONS) |
88cb0656 JB |
2287 | abort (); |
2288 | ||
7b4aedb9 JB |
2289 | /* Build the position as appropriate for this mouse click. */ |
2290 | if (event->kind == mouse_click) | |
284f4730 | 2291 | { |
7b4aedb9 | 2292 | int part; |
598a9fa7 | 2293 | FRAME_PTR f = XFRAME (event->frame_or_window); |
5ec75a55 RS |
2294 | Lisp_Object window |
2295 | = window_from_coordinates (f, XINT (event->x), XINT (event->y), | |
2296 | &part); | |
7b4aedb9 JB |
2297 | Lisp_Object posn; |
2298 | ||
5ec75a55 RS |
2299 | if (XINT (event->y) < FRAME_MENU_BAR_LINES (f)) |
2300 | { | |
2301 | int hpos; | |
2302 | Lisp_Object items; | |
2303 | items = FRAME_MENU_BAR_ITEMS (f); | |
2304 | for (; CONSP (items); items = XCONS (items)->cdr) | |
2305 | { | |
2306 | Lisp_Object pos, string; | |
2307 | pos = Fcdr (Fcdr (Fcar (items))); | |
2308 | string = Fcar (Fcdr (Fcar (items))); | |
0a9b0670 RS |
2309 | if (XINT (event->x) >= XINT (pos) |
2310 | && XINT (event->x) < XINT (pos) + XSTRING (string)->size) | |
5ec75a55 RS |
2311 | break; |
2312 | } | |
2313 | position | |
2314 | = Fcons (event->frame_or_window, | |
2315 | Fcons (Qmenu_bar, | |
2316 | Fcons (Fcons (event->x, event->y), | |
2317 | Fcons (make_number (event->timestamp), | |
2318 | Qnil)))); | |
2319 | ||
2320 | if (CONSP (items)) | |
2321 | return Fcons (Fcar (Fcar (items)), | |
2322 | Fcons (position, Qnil)); | |
2323 | else | |
2324 | return Fcons (Qnil, Fcons (position, Qnil)); | |
2325 | } | |
2326 | else if (XTYPE (window) != Lisp_Window) | |
7b4aedb9 | 2327 | posn = Qnil; |
284f4730 | 2328 | else |
7b4aedb9 | 2329 | { |
dbc4e1c1 JB |
2330 | XSETINT (event->x, |
2331 | (XINT (event->x) - XINT (XWINDOW (window)->left))); | |
2332 | XSETINT (event->y, | |
2333 | (XINT (event->y) - XINT (XWINDOW (window)->top))); | |
2334 | ||
7b4aedb9 JB |
2335 | if (part == 1) |
2336 | posn = Qmode_line; | |
2337 | else if (part == 2) | |
2338 | posn = Qvertical_line; | |
2339 | else | |
dbc4e1c1 JB |
2340 | XSET (posn, Lisp_Int, |
2341 | buffer_posn_from_coords (XWINDOW (window), | |
2342 | XINT (event->x), | |
2343 | XINT (event->y))); | |
7b4aedb9 JB |
2344 | } |
2345 | ||
5ec75a55 RS |
2346 | position |
2347 | = Fcons (window, | |
2348 | Fcons (posn, | |
2349 | Fcons (Fcons (event->x, event->y), | |
2350 | Fcons (make_number (event->timestamp), | |
2351 | Qnil)))); | |
284f4730 | 2352 | } |
7b4aedb9 | 2353 | else |
88cb0656 | 2354 | { |
7b4aedb9 JB |
2355 | Lisp_Object window = event->frame_or_window; |
2356 | Lisp_Object portion_whole = Fcons (event->x, event->y); | |
3c370943 | 2357 | Lisp_Object part = *scroll_bar_parts[(int) event->part]; |
7b4aedb9 JB |
2358 | |
2359 | position = | |
2360 | Fcons (window, | |
3c370943 | 2361 | Fcons (Qvertical_scroll_bar, |
7b4aedb9 JB |
2362 | Fcons (portion_whole, |
2363 | Fcons (make_number (event->timestamp), | |
2364 | Fcons (part, | |
2365 | Qnil))))); | |
88cb0656 JB |
2366 | } |
2367 | ||
dbc4e1c1 JB |
2368 | start_pos_ptr = &XVECTOR (button_down_location)->contents[button]; |
2369 | ||
2370 | start_pos = *start_pos_ptr; | |
2371 | *start_pos_ptr = Qnil; | |
7b4aedb9 | 2372 | |
559f9d04 RS |
2373 | is_double = (button == last_mouse_button |
2374 | && XINT (event->x) == last_mouse_x | |
2375 | && XINT (event->y) == last_mouse_y | |
2376 | && button_down_time != 0 | |
2377 | && (EQ (Vdouble_click_time, Qt) | |
2378 | || (INTEGERP (Vdouble_click_time) | |
2379 | && ((int)(event->timestamp - button_down_time) | |
2380 | < XINT (Vdouble_click_time))))); | |
2381 | last_mouse_button = button; | |
2382 | last_mouse_x = XINT (event->x); | |
2383 | last_mouse_y = XINT (event->y); | |
2384 | ||
7b4aedb9 JB |
2385 | /* If this is a button press, squirrel away the location, so |
2386 | we can decide later whether it was a click or a drag. */ | |
2387 | if (event->modifiers & down_modifier) | |
559f9d04 RS |
2388 | { |
2389 | if (is_double) | |
2390 | { | |
2391 | double_click_count++; | |
2392 | event->modifiers |= ((double_click_count > 2) | |
2393 | ? triple_modifier | |
2394 | : double_modifier); | |
2395 | } | |
2396 | else | |
2397 | double_click_count = 1; | |
2398 | button_down_time = event->timestamp; | |
2399 | *start_pos_ptr = Fcopy_alist (position); | |
2400 | } | |
7b4aedb9 | 2401 | |
88cb0656 | 2402 | /* Now we're releasing a button - check the co-ordinates to |
7b4aedb9 | 2403 | see if this was a click or a drag. */ |
88cb0656 JB |
2404 | else if (event->modifiers & up_modifier) |
2405 | { | |
48e416d4 RS |
2406 | /* If we did not see a down before this up, |
2407 | ignore the up. Probably this happened because | |
2408 | the down event chose a menu item. | |
2409 | It would be an annoyance to treat the release | |
2410 | of the button that chose the menu item | |
2411 | as a separate event. */ | |
2412 | ||
2413 | if (XTYPE (start_pos) != Lisp_Cons) | |
2414 | return Qnil; | |
2415 | ||
88cb0656 | 2416 | event->modifiers &= ~up_modifier; |
48e416d4 | 2417 | #if 0 /* Formerly we treated an up with no down as a click event. */ |
dbc4e1c1 JB |
2418 | if (XTYPE (start_pos) != Lisp_Cons) |
2419 | event->modifiers |= click_modifier; | |
2420 | else | |
48e416d4 | 2421 | #endif |
dbc4e1c1 JB |
2422 | { |
2423 | /* The third element of every position should be the (x,y) | |
2424 | pair. */ | |
2425 | Lisp_Object down = Fnth (make_number (2), start_pos); | |
2426 | ||
fbcd35bd JB |
2427 | if (EQ (event->x, XCONS (down)->car) |
2428 | && EQ (event->y, XCONS (down)->cdr)) | |
2429 | { | |
559f9d04 RS |
2430 | if (is_double && double_click_count > 1) |
2431 | event->modifiers |= ((double_click_count > 2) | |
2432 | ? triple_modifier | |
2433 | : double_modifier); | |
fbcd35bd | 2434 | else |
559f9d04 | 2435 | event->modifiers |= click_modifier; |
fbcd35bd JB |
2436 | } |
2437 | else | |
2438 | { | |
559f9d04 | 2439 | button_down_time = 0; |
fbcd35bd JB |
2440 | event->modifiers |= drag_modifier; |
2441 | } | |
dbc4e1c1 | 2442 | } |
88cb0656 JB |
2443 | } |
2444 | else | |
2445 | /* Every mouse event should either have the down_modifier or | |
7b4aedb9 | 2446 | the up_modifier set. */ |
88cb0656 JB |
2447 | abort (); |
2448 | ||
88cb0656 | 2449 | { |
7b4aedb9 | 2450 | /* Get the symbol we should use for the mouse click. */ |
5ec75a55 RS |
2451 | Lisp_Object head |
2452 | = modify_event_symbol (button, | |
2453 | event->modifiers, | |
2454 | Qmouse_click, | |
2455 | lispy_mouse_names, &mouse_syms, | |
2456 | (sizeof (lispy_mouse_names) | |
2457 | / sizeof (lispy_mouse_names[0]))); | |
7b4aedb9 | 2458 | |
88cb0656 | 2459 | if (event->modifiers & drag_modifier) |
dbc4e1c1 JB |
2460 | return Fcons (head, |
2461 | Fcons (start_pos, | |
2462 | Fcons (position, | |
2463 | Qnil))); | |
fbcd35bd JB |
2464 | else if (event->modifiers & (double_modifier | triple_modifier)) |
2465 | return Fcons (head, | |
2466 | Fcons (position, | |
2467 | Fcons (make_number (double_click_count), | |
2468 | Qnil))); | |
88cb0656 JB |
2469 | else |
2470 | return Fcons (head, | |
7b4aedb9 | 2471 | Fcons (position, |
88cb0656 JB |
2472 | Qnil)); |
2473 | } | |
284f4730 JB |
2474 | } |
2475 | ||
284f4730 JB |
2476 | /* The 'kind' field of the event is something we don't recognize. */ |
2477 | default: | |
48e416d4 | 2478 | abort (); |
284f4730 JB |
2479 | } |
2480 | } | |
2481 | ||
2482 | static Lisp_Object | |
7b4aedb9 | 2483 | make_lispy_movement (frame, bar_window, part, x, y, time) |
ff11dfa1 | 2484 | FRAME_PTR frame; |
7b4aedb9 | 2485 | Lisp_Object bar_window; |
3c370943 | 2486 | enum scroll_bar_part part; |
284f4730 | 2487 | Lisp_Object x, y; |
e5d77022 | 2488 | unsigned long time; |
284f4730 | 2489 | { |
3c370943 | 2490 | /* Is it a scroll bar movement? */ |
7b4aedb9 | 2491 | if (frame && ! NILP (bar_window)) |
4bb994d1 | 2492 | { |
3c370943 | 2493 | Lisp_Object part_sym = *scroll_bar_parts[(int) part]; |
4bb994d1 | 2494 | |
3c370943 | 2495 | return Fcons (Qscroll_bar_movement, |
7b4aedb9 | 2496 | (Fcons (Fcons (bar_window, |
3c370943 | 2497 | Fcons (Qvertical_scroll_bar, |
4bb994d1 JB |
2498 | Fcons (Fcons (x, y), |
2499 | Fcons (make_number (time), | |
cb5df6ae | 2500 | Fcons (part_sym, |
4bb994d1 JB |
2501 | Qnil))))), |
2502 | Qnil))); | |
2503 | } | |
2504 | ||
2505 | /* Or is it an ordinary mouse movement? */ | |
284f4730 JB |
2506 | else |
2507 | { | |
4bb994d1 JB |
2508 | int area; |
2509 | Lisp_Object window = | |
2510 | (frame | |
2511 | ? window_from_coordinates (frame, XINT (x), XINT (y), &area) | |
2512 | : Qnil); | |
2513 | Lisp_Object posn; | |
2514 | ||
2515 | if (XTYPE (window) == Lisp_Window) | |
2516 | { | |
2517 | XSETINT (x, XINT (x) - XINT (XWINDOW (window)->left)); | |
2518 | XSETINT (y, XINT (y) - XINT (XWINDOW (window)->top)); | |
2519 | ||
2520 | if (area == 1) | |
2521 | posn = Qmode_line; | |
2522 | else if (area == 2) | |
2523 | posn = Qvertical_line; | |
2524 | else | |
2525 | XSET (posn, Lisp_Int, | |
2526 | buffer_posn_from_coords (XWINDOW (window), | |
2527 | XINT (x), XINT (y))); | |
2528 | } | |
284f4730 | 2529 | else |
4bb994d1 JB |
2530 | { |
2531 | window = Qnil; | |
2532 | posn = Qnil; | |
f76b81d6 JB |
2533 | XFASTINT (x) = 0; |
2534 | XFASTINT (y) = 0; | |
4bb994d1 | 2535 | } |
284f4730 | 2536 | |
4bb994d1 JB |
2537 | return Fcons (Qmouse_movement, |
2538 | Fcons (Fcons (window, | |
2539 | Fcons (posn, | |
2540 | Fcons (Fcons (x, y), | |
2541 | Fcons (make_number (time), | |
2542 | Qnil)))), | |
2543 | Qnil)); | |
2544 | } | |
284f4730 JB |
2545 | } |
2546 | ||
cd21b839 JB |
2547 | /* Construct a switch frame event. */ |
2548 | static Lisp_Object | |
2549 | make_lispy_switch_frame (frame) | |
2550 | Lisp_Object frame; | |
2551 | { | |
2552 | return Fcons (Qswitch_frame, Fcons (frame, Qnil)); | |
2553 | } | |
0a7f1fc0 JB |
2554 | \f |
2555 | /* Manipulating modifiers. */ | |
284f4730 | 2556 | |
0a7f1fc0 | 2557 | /* Parse the name of SYMBOL, and return the set of modifiers it contains. |
284f4730 | 2558 | |
0a7f1fc0 JB |
2559 | If MODIFIER_END is non-zero, set *MODIFIER_END to the position in |
2560 | SYMBOL's name of the end of the modifiers; the string from this | |
2561 | position is the unmodified symbol name. | |
284f4730 | 2562 | |
0a7f1fc0 JB |
2563 | This doesn't use any caches. */ |
2564 | static int | |
2565 | parse_modifiers_uncached (symbol, modifier_end) | |
284f4730 | 2566 | Lisp_Object symbol; |
0a7f1fc0 | 2567 | int *modifier_end; |
284f4730 JB |
2568 | { |
2569 | struct Lisp_String *name; | |
2570 | int i; | |
2571 | int modifiers; | |
284f4730 JB |
2572 | |
2573 | CHECK_SYMBOL (symbol, 1); | |
2574 | ||
2575 | modifiers = 0; | |
2576 | name = XSYMBOL (symbol)->name; | |
2577 | ||
284f4730 | 2578 | |
0a7f1fc0 | 2579 | for (i = 0; i+2 <= name->size; ) |
284f4730 JB |
2580 | switch (name->data[i]) |
2581 | { | |
0a7f1fc0 JB |
2582 | #define SINGLE_LETTER_MOD(bit) \ |
2583 | if (name->data[i+1] != '-') \ | |
2584 | goto no_more_modifiers; \ | |
2585 | modifiers |= bit; \ | |
fce33686 | 2586 | i += 2; |
0a7f1fc0 JB |
2587 | |
2588 | case 'A': | |
2589 | SINGLE_LETTER_MOD (alt_modifier); | |
284f4730 JB |
2590 | break; |
2591 | ||
2592 | case 'C': | |
0a7f1fc0 | 2593 | SINGLE_LETTER_MOD (ctrl_modifier); |
fce33686 JB |
2594 | break; |
2595 | ||
2596 | case 'H': | |
0a7f1fc0 | 2597 | SINGLE_LETTER_MOD (hyper_modifier); |
fce33686 JB |
2598 | break; |
2599 | ||
2600 | case 'M': | |
0a7f1fc0 | 2601 | SINGLE_LETTER_MOD (meta_modifier); |
284f4730 JB |
2602 | break; |
2603 | ||
2604 | case 'S': | |
0a7f1fc0 | 2605 | SINGLE_LETTER_MOD (shift_modifier); |
fce33686 JB |
2606 | break; |
2607 | ||
2608 | case 's': | |
86e5706b | 2609 | SINGLE_LETTER_MOD (super_modifier); |
284f4730 JB |
2610 | break; |
2611 | ||
fce33686 JB |
2612 | case 'd': |
2613 | if (i + 5 > name->size) | |
2614 | goto no_more_modifiers; | |
2615 | if (! strncmp (name->data + i, "drag-", 5)) | |
2616 | { | |
fce33686 JB |
2617 | modifiers |= drag_modifier; |
2618 | i += 5; | |
2619 | } | |
2620 | else if (! strncmp (name->data + i, "down-", 5)) | |
2621 | { | |
fce33686 JB |
2622 | modifiers |= down_modifier; |
2623 | i += 5; | |
2624 | } | |
fbcd35bd JB |
2625 | else if (i + 7 <= name->size |
2626 | && ! strncmp (name->data + i, "double-", 7)) | |
2627 | { | |
2628 | modifiers |= double_modifier; | |
2629 | i += 7; | |
2630 | } | |
2631 | else | |
2632 | goto no_more_modifiers; | |
2633 | break; | |
2634 | ||
2635 | case 't': | |
2636 | if (i + 7 > name->size) | |
2637 | goto no_more_modifiers; | |
2638 | if (! strncmp (name->data + i, "triple-", 7)) | |
2639 | { | |
2640 | modifiers |= triple_modifier; | |
2641 | i += 7; | |
2642 | } | |
fce33686 JB |
2643 | else |
2644 | goto no_more_modifiers; | |
284f4730 JB |
2645 | break; |
2646 | ||
2647 | default: | |
2648 | goto no_more_modifiers; | |
0a7f1fc0 JB |
2649 | |
2650 | #undef SINGLE_LETTER_MOD | |
284f4730 JB |
2651 | } |
2652 | no_more_modifiers: | |
2653 | ||
0a7f1fc0 | 2654 | /* Should we include the `click' modifier? */ |
fbcd35bd JB |
2655 | if (! (modifiers & (down_modifier | drag_modifier |
2656 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 2657 | && i + 7 == name->size |
4bb994d1 | 2658 | && strncmp (name->data + i, "mouse-", 6) == 0 |
6569cc8d | 2659 | && ('0' <= name->data[i + 6] && name->data[i + 6] <= '9')) |
0a7f1fc0 JB |
2660 | modifiers |= click_modifier; |
2661 | ||
2662 | if (modifier_end) | |
2663 | *modifier_end = i; | |
2664 | ||
2665 | return modifiers; | |
2666 | } | |
2667 | ||
2668 | ||
2669 | /* Return a symbol whose name is the modifier prefixes for MODIFIERS | |
2670 | prepended to the string BASE[0..BASE_LEN-1]. | |
2671 | This doesn't use any caches. */ | |
2672 | static Lisp_Object | |
2673 | apply_modifiers_uncached (modifiers, base, base_len) | |
2674 | int modifiers; | |
2675 | char *base; | |
2676 | int base_len; | |
2677 | { | |
2678 | /* Since BASE could contain nulls, we can't use intern here; we have | |
2679 | to use Fintern, which expects a genuine Lisp_String, and keeps a | |
2680 | reference to it. */ | |
2681 | char *new_mods = | |
fbcd35bd | 2682 | (char *) alloca (sizeof ("A-C-H-M-S-s-down-drag-double-triple-")); |
0a7f1fc0 | 2683 | int mod_len; |
284f4730 | 2684 | |
284f4730 | 2685 | { |
0a7f1fc0 JB |
2686 | char *p = new_mods; |
2687 | ||
2688 | /* Only the event queue may use the `up' modifier; it should always | |
2689 | be turned into a click or drag event before presented to lisp code. */ | |
2690 | if (modifiers & up_modifier) | |
2691 | abort (); | |
2692 | ||
2693 | if (modifiers & alt_modifier) { *p++ = 'A'; *p++ = '-'; } | |
2694 | if (modifiers & ctrl_modifier) { *p++ = 'C'; *p++ = '-'; } | |
2695 | if (modifiers & hyper_modifier) { *p++ = 'H'; *p++ = '-'; } | |
2696 | if (modifiers & meta_modifier) { *p++ = 'M'; *p++ = '-'; } | |
2697 | if (modifiers & shift_modifier) { *p++ = 'S'; *p++ = '-'; } | |
86e5706b | 2698 | if (modifiers & super_modifier) { *p++ = 's'; *p++ = '-'; } |
fbcd35bd JB |
2699 | if (modifiers & double_modifier) { strcpy (p, "double-"); p += 7; } |
2700 | if (modifiers & triple_modifier) { strcpy (p, "triple-"); p += 7; } | |
559f9d04 RS |
2701 | if (modifiers & down_modifier) { strcpy (p, "down-"); p += 5; } |
2702 | if (modifiers & drag_modifier) { strcpy (p, "drag-"); p += 5; } | |
0a7f1fc0 JB |
2703 | /* The click modifier is denoted by the absence of other modifiers. */ |
2704 | ||
2705 | *p = '\0'; | |
2706 | ||
2707 | mod_len = p - new_mods; | |
2708 | } | |
284f4730 | 2709 | |
0a7f1fc0 JB |
2710 | { |
2711 | Lisp_Object new_name = make_uninit_string (mod_len + base_len); | |
2712 | ||
2713 | bcopy (new_mods, XSTRING (new_name)->data, mod_len); | |
2714 | bcopy (base, XSTRING (new_name)->data + mod_len, base_len); | |
284f4730 JB |
2715 | |
2716 | return Fintern (new_name, Qnil); | |
2717 | } | |
2718 | } | |
2719 | ||
2720 | ||
0a7f1fc0 JB |
2721 | static char *modifier_names[] = |
2722 | { | |
fbcd35bd | 2723 | "up", "down", "drag", "click", "double", "triple", 0, 0, |
1dfdf9e2 | 2724 | 0, 0, 0, 0, 0, 0, 0, 0, |
86e5706b | 2725 | 0, 0, "alt", "super", "hyper", "shift", "control", "meta" |
0a7f1fc0 | 2726 | }; |
80645119 | 2727 | #define NUM_MOD_NAMES (sizeof (modifier_names) / sizeof (modifier_names[0])) |
0a7f1fc0 JB |
2728 | |
2729 | static Lisp_Object modifier_symbols; | |
2730 | ||
2731 | /* Return the list of modifier symbols corresponding to the mask MODIFIERS. */ | |
2732 | static Lisp_Object | |
2733 | lispy_modifier_list (modifiers) | |
2734 | int modifiers; | |
2735 | { | |
2736 | Lisp_Object modifier_list; | |
2737 | int i; | |
2738 | ||
2739 | modifier_list = Qnil; | |
80645119 | 2740 | for (i = 0; (1<<i) <= modifiers && i < NUM_MOD_NAMES; i++) |
0a7f1fc0 | 2741 | if (modifiers & (1<<i)) |
80645119 JB |
2742 | modifier_list = Fcons (XVECTOR (modifier_symbols)->contents[i], |
2743 | modifier_list); | |
0a7f1fc0 JB |
2744 | |
2745 | return modifier_list; | |
2746 | } | |
2747 | ||
2748 | ||
2749 | /* Parse the modifiers on SYMBOL, and return a list like (UNMODIFIED MASK), | |
2750 | where UNMODIFIED is the unmodified form of SYMBOL, | |
2751 | MASK is the set of modifiers present in SYMBOL's name. | |
2752 | This is similar to parse_modifiers_uncached, but uses the cache in | |
2753 | SYMBOL's Qevent_symbol_element_mask property, and maintains the | |
2754 | Qevent_symbol_elements property. */ | |
2755 | static Lisp_Object | |
2756 | parse_modifiers (symbol) | |
2757 | Lisp_Object symbol; | |
2758 | { | |
2759 | Lisp_Object elements = Fget (symbol, Qevent_symbol_element_mask); | |
2760 | ||
2761 | if (CONSP (elements)) | |
2762 | return elements; | |
2763 | else | |
2764 | { | |
2765 | int end; | |
2766 | int modifiers = parse_modifiers_uncached (symbol, &end); | |
2767 | Lisp_Object unmodified | |
2768 | = Fintern (make_string (XSYMBOL (symbol)->name->data + end, | |
2769 | XSYMBOL (symbol)->name->size - end), | |
2770 | Qnil); | |
2771 | Lisp_Object mask; | |
2772 | ||
734fef94 JB |
2773 | if (modifiers & ~((1<<VALBITS) - 1)) |
2774 | abort (); | |
0a7f1fc0 JB |
2775 | XFASTINT (mask) = modifiers; |
2776 | elements = Fcons (unmodified, Fcons (mask, Qnil)); | |
2777 | ||
2778 | /* Cache the parsing results on SYMBOL. */ | |
2779 | Fput (symbol, Qevent_symbol_element_mask, | |
2780 | elements); | |
2781 | Fput (symbol, Qevent_symbol_elements, | |
2782 | Fcons (unmodified, lispy_modifier_list (modifiers))); | |
2783 | ||
2784 | /* Since we know that SYMBOL is modifiers applied to unmodified, | |
2785 | it would be nice to put that in unmodified's cache. | |
2786 | But we can't, since we're not sure that parse_modifiers is | |
2787 | canonical. */ | |
2788 | ||
2789 | return elements; | |
2790 | } | |
2791 | } | |
2792 | ||
2793 | /* Apply the modifiers MODIFIERS to the symbol BASE. | |
2794 | BASE must be unmodified. | |
2795 | ||
2796 | This is like apply_modifiers_uncached, but uses BASE's | |
2797 | Qmodifier_cache property, if present. It also builds | |
cd21b839 JB |
2798 | Qevent_symbol_elements properties, since it has that info anyway. |
2799 | ||
2800 | apply_modifiers copies the value of BASE's Qevent_kind property to | |
2801 | the modified symbol. */ | |
0a7f1fc0 JB |
2802 | static Lisp_Object |
2803 | apply_modifiers (modifiers, base) | |
2804 | int modifiers; | |
2805 | Lisp_Object base; | |
2806 | { | |
7b4aedb9 | 2807 | Lisp_Object cache, index, entry, new_symbol; |
0a7f1fc0 | 2808 | |
80645119 JB |
2809 | /* Mask out upper bits. We don't know where this value's been. */ |
2810 | modifiers &= (1<<VALBITS) - 1; | |
2811 | ||
0a7f1fc0 | 2812 | /* The click modifier never figures into cache indices. */ |
0a7f1fc0 | 2813 | cache = Fget (base, Qmodifier_cache); |
cd21b839 | 2814 | XFASTINT (index) = (modifiers & ~click_modifier); |
0a7f1fc0 JB |
2815 | entry = Fassq (index, cache); |
2816 | ||
2817 | if (CONSP (entry)) | |
7b4aedb9 JB |
2818 | new_symbol = XCONS (entry)->cdr; |
2819 | else | |
2820 | { | |
2821 | /* We have to create the symbol ourselves. */ | |
2822 | new_symbol = apply_modifiers_uncached (modifiers, | |
2823 | XSYMBOL (base)->name->data, | |
2824 | XSYMBOL (base)->name->size); | |
2825 | ||
2826 | /* Add the new symbol to the base's cache. */ | |
2827 | entry = Fcons (index, new_symbol); | |
2828 | Fput (base, Qmodifier_cache, Fcons (entry, cache)); | |
2829 | ||
2830 | /* We have the parsing info now for free, so add it to the caches. */ | |
2831 | XFASTINT (index) = modifiers; | |
2832 | Fput (new_symbol, Qevent_symbol_element_mask, | |
2833 | Fcons (base, Fcons (index, Qnil))); | |
2834 | Fput (new_symbol, Qevent_symbol_elements, | |
2835 | Fcons (base, lispy_modifier_list (modifiers))); | |
2836 | } | |
0a7f1fc0 | 2837 | |
7b4aedb9 JB |
2838 | /* Make sure this symbol is of the same kind as BASE. |
2839 | ||
2840 | You'd think we could just set this once and for all when we | |
2841 | intern the symbol above, but reorder_modifiers may call us when | |
2842 | BASE's property isn't set right; we can't assume that just | |
80645119 JB |
2843 | because it has a Qmodifier_cache property it must have its |
2844 | Qevent_kind set right as well. */ | |
7b4aedb9 JB |
2845 | if (NILP (Fget (new_symbol, Qevent_kind))) |
2846 | { | |
2847 | Lisp_Object kind = Fget (base, Qevent_kind); | |
2848 | ||
2849 | if (! NILP (kind)) | |
2850 | Fput (new_symbol, Qevent_kind, kind); | |
2851 | } | |
2852 | ||
2853 | return new_symbol; | |
0a7f1fc0 JB |
2854 | } |
2855 | ||
2856 | ||
2857 | /* Given a symbol whose name begins with modifiers ("C-", "M-", etc), | |
2858 | return a symbol with the modifiers placed in the canonical order. | |
2859 | Canonical order is alphabetical, except for down and drag, which | |
2860 | always come last. The 'click' modifier is never written out. | |
2861 | ||
2862 | Fdefine_key calls this to make sure that (for example) C-M-foo | |
2863 | and M-C-foo end up being equivalent in the keymap. */ | |
2864 | ||
2865 | Lisp_Object | |
2866 | reorder_modifiers (symbol) | |
2867 | Lisp_Object symbol; | |
2868 | { | |
2869 | /* It's hopefully okay to write the code this way, since everything | |
2870 | will soon be in caches, and no consing will be done at all. */ | |
2871 | Lisp_Object parsed = parse_modifiers (symbol); | |
2872 | ||
2873 | return apply_modifiers (XCONS (XCONS (parsed)->cdr)->car, | |
2874 | XCONS (parsed)->car); | |
2875 | } | |
2876 | ||
2877 | ||
284f4730 JB |
2878 | /* For handling events, we often want to produce a symbol whose name |
2879 | is a series of modifier key prefixes ("M-", "C-", etcetera) attached | |
2880 | to some base, like the name of a function key or mouse button. | |
2881 | modify_event_symbol produces symbols of this sort. | |
2882 | ||
2883 | NAME_TABLE should point to an array of strings, such that NAME_TABLE[i] | |
2884 | is the name of the i'th symbol. TABLE_SIZE is the number of elements | |
2885 | in the table. | |
2886 | ||
2887 | SYMBOL_TABLE should be a pointer to a Lisp_Object whose value will | |
2888 | persist between calls to modify_event_symbol that it can use to | |
2889 | store a cache of the symbols it's generated for this NAME_TABLE | |
2890 | before. | |
2891 | ||
2892 | SYMBOL_NUM is the number of the base name we want from NAME_TABLE. | |
2893 | ||
2894 | MODIFIERS is a set of modifier bits (as given in struct input_events) | |
2895 | whose prefixes should be applied to the symbol name. | |
2896 | ||
2897 | SYMBOL_KIND is the value to be placed in the event_kind property of | |
88cb0656 JB |
2898 | the returned symbol. |
2899 | ||
2900 | The symbols we create are supposed to have an | |
eb8c3be9 | 2901 | `event-symbol-elements' property, which lists the modifiers present |
88cb0656 JB |
2902 | in the symbol's name. */ |
2903 | ||
284f4730 JB |
2904 | static Lisp_Object |
2905 | modify_event_symbol (symbol_num, modifiers, symbol_kind, name_table, | |
2906 | symbol_table, table_size) | |
2907 | int symbol_num; | |
2908 | unsigned modifiers; | |
2909 | Lisp_Object symbol_kind; | |
2910 | char **name_table; | |
2911 | Lisp_Object *symbol_table; | |
2912 | int table_size; | |
2913 | { | |
88cb0656 | 2914 | Lisp_Object *slot; |
284f4730 JB |
2915 | |
2916 | /* Is this a request for a valid symbol? */ | |
88cb0656 | 2917 | if (symbol_num < 0 || symbol_num >= table_size) |
284f4730 JB |
2918 | abort (); |
2919 | ||
0a7f1fc0 | 2920 | /* If *symbol_table doesn't seem to be initialized properly, fix that. |
88cb0656 | 2921 | *symbol_table should be a lisp vector TABLE_SIZE elements long, |
4bb994d1 JB |
2922 | where the Nth element is the symbol for NAME_TABLE[N], or nil if |
2923 | we've never used that symbol before. */ | |
284f4730 JB |
2924 | if (XTYPE (*symbol_table) != Lisp_Vector |
2925 | || XVECTOR (*symbol_table)->size != table_size) | |
88cb0656 | 2926 | { |
0a7f1fc0 JB |
2927 | Lisp_Object size; |
2928 | ||
2929 | XFASTINT (size) = table_size; | |
2930 | *symbol_table = Fmake_vector (size, Qnil); | |
88cb0656 | 2931 | } |
284f4730 | 2932 | |
88cb0656 | 2933 | slot = & XVECTOR (*symbol_table)->contents[symbol_num]; |
284f4730 | 2934 | |
0a7f1fc0 JB |
2935 | /* Have we already used this symbol before? */ |
2936 | if (NILP (*slot)) | |
284f4730 | 2937 | { |
0a7f1fc0 | 2938 | /* No; let's create it. */ |
d1f50460 RS |
2939 | if (name_table[symbol_num]) |
2940 | *slot = intern (name_table[symbol_num]); | |
2941 | else | |
2942 | { | |
2943 | char buf[20]; | |
2944 | sprintf (buf, "key-%d", symbol_num); | |
2945 | *slot = intern (buf); | |
2946 | } | |
0a7f1fc0 JB |
2947 | |
2948 | /* Fill in the cache entries for this symbol; this also | |
2949 | builds the Qevent_symbol_elements property, which the user | |
2950 | cares about. */ | |
6569cc8d | 2951 | apply_modifiers (modifiers & click_modifier, *slot); |
0a7f1fc0 | 2952 | Fput (*slot, Qevent_kind, symbol_kind); |
284f4730 | 2953 | } |
88cb0656 | 2954 | |
0a7f1fc0 JB |
2955 | /* Apply modifiers to that symbol. */ |
2956 | return apply_modifiers (modifiers, *slot); | |
284f4730 | 2957 | } |
0a7f1fc0 | 2958 | |
284f4730 | 2959 | \f |
284f4730 JB |
2960 | /* Store into *addr a value nonzero if terminal input chars are available. |
2961 | Serves the purpose of ioctl (0, FIONREAD, addr) | |
2962 | but works even if FIONREAD does not exist. | |
2963 | (In fact, this may actually read some input.) */ | |
2964 | ||
2965 | static void | |
2966 | get_input_pending (addr) | |
2967 | int *addr; | |
2968 | { | |
2969 | /* First of all, have we already counted some input? */ | |
2970 | *addr = !NILP (Vquit_flag) || readable_events (); | |
2971 | ||
2972 | /* If input is being read as it arrives, and we have none, there is none. */ | |
2973 | if (*addr > 0 || (interrupt_input && ! interrupts_deferred)) | |
2974 | return; | |
2975 | ||
2976 | /* Try to read some input and see how much we get. */ | |
2977 | gobble_input (0); | |
2978 | *addr = !NILP (Vquit_flag) || readable_events (); | |
2979 | } | |
2980 | ||
2981 | /* Interface to read_avail_input, blocking SIGIO if necessary. */ | |
2982 | ||
2983 | int | |
2984 | gobble_input (expected) | |
2985 | int expected; | |
2986 | { | |
2987 | #ifndef VMS | |
2988 | #ifdef SIGIO | |
2989 | if (interrupt_input) | |
2990 | { | |
32676c08 | 2991 | SIGMASKTYPE mask; |
e065a56e | 2992 | mask = sigblockx (SIGIO); |
284f4730 | 2993 | read_avail_input (expected); |
e065a56e | 2994 | sigsetmask (mask); |
284f4730 JB |
2995 | } |
2996 | else | |
2997 | #endif | |
2998 | read_avail_input (expected); | |
2999 | #endif | |
3000 | } | |
3001 | \f | |
3002 | #ifndef VMS | |
3003 | ||
3004 | /* Read any terminal input already buffered up by the system | |
3005 | into the kbd_buffer, but do not wait. | |
3006 | ||
3007 | EXPECTED should be nonzero if the caller knows there is some input. | |
3008 | ||
3009 | Except on VMS, all input is read by this function. | |
3010 | If interrupt_input is nonzero, this function MUST be called | |
3011 | only when SIGIO is blocked. | |
3012 | ||
3013 | Returns the number of keyboard chars read, or -1 meaning | |
3014 | this is a bad time to try to read input. */ | |
3015 | ||
3016 | static int | |
3017 | read_avail_input (expected) | |
3018 | int expected; | |
3019 | { | |
3020 | struct input_event buf[KBD_BUFFER_SIZE]; | |
3021 | register int i; | |
3022 | int nread; | |
3023 | ||
3024 | if (read_socket_hook) | |
3025 | /* No need for FIONREAD or fcntl; just say don't wait. */ | |
3026 | nread = (*read_socket_hook) (0, buf, KBD_BUFFER_SIZE, expected, expected); | |
3027 | else | |
3028 | { | |
3029 | unsigned char cbuf[KBD_BUFFER_SIZE]; | |
3030 | ||
3031 | #ifdef FIONREAD | |
3032 | /* Find out how much input is available. */ | |
3033 | if (ioctl (0, FIONREAD, &nread) < 0) | |
3034 | /* Formerly simply reported no input, but that sometimes led to | |
3035 | a failure of Emacs to terminate. | |
3036 | SIGHUP seems appropriate if we can't reach the terminal. */ | |
e4535288 RS |
3037 | /* ??? Is it really right to send the signal just to this process |
3038 | rather than to the whole process group? | |
3039 | Perhaps on systems with FIONREAD Emacs is alone in its group. */ | |
284f4730 JB |
3040 | kill (getpid (), SIGHUP); |
3041 | if (nread == 0) | |
3042 | return 0; | |
3043 | if (nread > sizeof cbuf) | |
3044 | nread = sizeof cbuf; | |
3045 | #else /* no FIONREAD */ | |
3046 | #ifdef USG | |
3047 | /* Read some input if available, but don't wait. */ | |
3048 | nread = sizeof cbuf; | |
3049 | fcntl (fileno (stdin), F_SETFL, O_NDELAY); | |
3050 | #else | |
3051 | you lose; | |
3052 | #endif | |
3053 | #endif | |
3054 | ||
3055 | /* Now read; for one reason or another, this will not block. */ | |
3056 | while (1) | |
3057 | { | |
3058 | nread = read (fileno (stdin), cbuf, nread); | |
3059 | #ifdef AIX | |
3060 | /* The kernel sometimes fails to deliver SIGHUP for ptys. | |
3061 | This looks incorrect, but it isn't, because _BSD causes | |
3062 | O_NDELAY to be defined in fcntl.h as O_NONBLOCK, | |
3063 | and that causes a value other than 0 when there is no input. */ | |
3064 | if (nread == 0) | |
3065 | kill (SIGHUP, 0); | |
3066 | #endif | |
3067 | /* Retry the read if it is interrupted. */ | |
3068 | if (nread >= 0 | |
3069 | || ! (errno == EAGAIN || errno == EFAULT | |
3070 | #ifdef EBADSLT | |
3071 | || errno == EBADSLT | |
3072 | #endif | |
3073 | )) | |
3074 | break; | |
3075 | } | |
3076 | ||
3077 | #ifndef FIONREAD | |
3078 | #ifdef USG | |
3079 | fcntl (fileno (stdin), F_SETFL, 0); | |
3080 | #endif /* USG */ | |
3081 | #endif /* no FIONREAD */ | |
3082 | for (i = 0; i < nread; i++) | |
3083 | { | |
3084 | buf[i].kind = ascii_keystroke; | |
86e5706b | 3085 | buf[i].modifiers = 0; |
b04904fb | 3086 | if (meta_key == 1 && (cbuf[i] & 0x80)) |
86e5706b | 3087 | buf[i].modifiers = meta_modifier; |
b04904fb RS |
3088 | if (meta_key != 2) |
3089 | cbuf[i] &= ~0x80; | |
86e5706b | 3090 | |
7b4aedb9 JB |
3091 | XSET (buf[i].code, Lisp_Int, cbuf[i]); |
3092 | #ifdef MULTI_FRAME | |
3093 | XSET (buf[i].frame_or_window, Lisp_Frame, selected_frame); | |
3094 | #else | |
3095 | buf[i].frame_or_window = Qnil; | |
3096 | #endif | |
284f4730 JB |
3097 | } |
3098 | } | |
3099 | ||
3100 | /* Scan the chars for C-g and store them in kbd_buffer. */ | |
3101 | for (i = 0; i < nread; i++) | |
3102 | { | |
3103 | kbd_buffer_store_event (&buf[i]); | |
3104 | /* Don't look at input that follows a C-g too closely. | |
3105 | This reduces lossage due to autorepeat on C-g. */ | |
3106 | if (buf[i].kind == ascii_keystroke | |
3107 | && XINT(buf[i].code) == quit_char) | |
3108 | break; | |
3109 | } | |
3110 | ||
3111 | return nread; | |
3112 | } | |
3113 | #endif /* not VMS */ | |
3114 | \f | |
3115 | #ifdef SIGIO /* for entire page */ | |
3116 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
3117 | ||
2ce30ea2 | 3118 | SIGTYPE |
284f4730 JB |
3119 | input_available_signal (signo) |
3120 | int signo; | |
3121 | { | |
3122 | /* Must preserve main program's value of errno. */ | |
3123 | int old_errno = errno; | |
3124 | #ifdef BSD4_1 | |
3125 | extern int select_alarmed; | |
3126 | #endif | |
3127 | ||
3128 | #ifdef USG | |
3129 | /* USG systems forget handlers when they are used; | |
3130 | must reestablish each time */ | |
3131 | signal (signo, input_available_signal); | |
3132 | #endif /* USG */ | |
3133 | ||
3134 | #ifdef BSD4_1 | |
3135 | sigisheld (SIGIO); | |
3136 | #endif | |
3137 | ||
ffd56f97 JB |
3138 | if (input_available_clear_time) |
3139 | EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0); | |
284f4730 JB |
3140 | |
3141 | while (1) | |
3142 | { | |
3143 | int nread; | |
3144 | nread = read_avail_input (1); | |
3145 | /* -1 means it's not ok to read the input now. | |
3146 | UNBLOCK_INPUT will read it later; now, avoid infinite loop. | |
3147 | 0 means there was no keyboard input available. */ | |
3148 | if (nread <= 0) | |
3149 | break; | |
3150 | ||
3151 | #ifdef BSD4_1 | |
3152 | select_alarmed = 1; /* Force the select emulator back to life */ | |
3153 | #endif | |
3154 | } | |
3155 | ||
3156 | #ifdef BSD4_1 | |
3157 | sigfree (); | |
3158 | #endif | |
3159 | errno = old_errno; | |
3160 | } | |
3161 | #endif /* SIGIO */ | |
ad163903 JB |
3162 | |
3163 | /* Send ourselves a SIGIO. | |
3164 | ||
3165 | This function exists so that the UNBLOCK_INPUT macro in | |
3166 | blockinput.h can have some way to take care of input we put off | |
3167 | dealing with, without assuming that every file which uses | |
3168 | UNBLOCK_INPUT also has #included the files necessary to get SIGIO. */ | |
3169 | void | |
3170 | reinvoke_input_signal () | |
3171 | { | |
3172 | #ifdef SIGIO | |
3173 | kill (0, SIGIO); | |
3174 | #endif | |
3175 | } | |
3176 | ||
3177 | ||
284f4730 JB |
3178 | \f |
3179 | /* Return the prompt-string of a sparse keymap. | |
3180 | This is the first element which is a string. | |
3181 | Return nil if there is none. */ | |
3182 | ||
3183 | Lisp_Object | |
3184 | map_prompt (map) | |
3185 | Lisp_Object map; | |
3186 | { | |
3187 | while (CONSP (map)) | |
3188 | { | |
3189 | register Lisp_Object tem; | |
3190 | tem = Fcar (map); | |
3191 | if (XTYPE (tem) == Lisp_String) | |
3192 | return tem; | |
3193 | map = Fcdr (map); | |
3194 | } | |
3195 | return Qnil; | |
3196 | } | |
3197 | ||
5ec75a55 RS |
3198 | static Lisp_Object menu_bar_item (); |
3199 | static Lisp_Object menu_bar_one_keymap (); | |
3200 | ||
3201 | /* Return a list of menu items for a menu bar, appropriate | |
3202 | to the current buffer. | |
3203 | The elements have the form (KEY STRING . nil). */ | |
3204 | ||
3205 | Lisp_Object | |
3206 | menu_bar_items () | |
3207 | { | |
3208 | /* The number of keymaps we're scanning right now, and the number of | |
3209 | keymaps we have allocated space for. */ | |
3210 | int nmaps; | |
3211 | ||
3212 | /* maps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] | |
3213 | in the current keymaps, or nil where it is not a prefix. */ | |
3214 | Lisp_Object *maps; | |
3215 | ||
9f9c0e27 | 3216 | Lisp_Object def, tem, tail; |
5ec75a55 RS |
3217 | |
3218 | Lisp_Object result; | |
3219 | ||
3220 | int mapno; | |
47d319aa | 3221 | Lisp_Object oquit; |
5ec75a55 | 3222 | |
db60d856 JB |
3223 | /* In order to build the menus, we need to call the keymap |
3224 | accessors. They all call QUIT. But this function is called | |
3225 | during redisplay, during which a quit is fatal. So inhibit | |
47d319aa RS |
3226 | quitting while building the menus. |
3227 | We do this instead of specbind because (1) errors will clear it anyway | |
3228 | and (2) this avoids risk of specpdl overflow. */ | |
3229 | oquit = Vinhibit_quit; | |
3230 | Vinhibit_quit = Qt; | |
db60d856 | 3231 | |
5ec75a55 RS |
3232 | /* Build our list of keymaps. |
3233 | If we recognize a function key and replace its escape sequence in | |
3234 | keybuf with its symbol, or if the sequence starts with a mouse | |
3235 | click and we need to switch buffers, we jump back here to rebuild | |
3236 | the initial keymaps from the current buffer. */ | |
3237 | { | |
3238 | Lisp_Object *tmaps; | |
3239 | ||
3240 | nmaps = current_minor_maps (0, &tmaps) + 2; | |
3241 | maps = (Lisp_Object *) alloca (nmaps * sizeof (maps[0])); | |
3242 | bcopy (tmaps, maps, (nmaps - 2) * sizeof (maps[0])); | |
3243 | #ifdef USE_TEXT_PROPERTIES | |
3244 | maps[nmaps-2] = get_local_map (PT, current_buffer); | |
3245 | #else | |
a6d53864 | 3246 | maps[nmaps-2] = current_buffer->keymap; |
5ec75a55 | 3247 | #endif |
7e6992e0 | 3248 | maps[nmaps-1] = current_global_map; |
5ec75a55 RS |
3249 | } |
3250 | ||
3251 | /* Look up in each map the dummy prefix key `menu-bar'. */ | |
3252 | ||
3253 | result = Qnil; | |
3254 | ||
e58aa385 | 3255 | for (mapno = nmaps - 1; mapno >= 0; mapno--) |
5ec75a55 RS |
3256 | { |
3257 | if (! NILP (maps[mapno])) | |
e74fbc70 | 3258 | def = get_keyelt (access_keymap (maps[mapno], Qmenu_bar, 1, 0)); |
5ec75a55 RS |
3259 | else |
3260 | def = Qnil; | |
3261 | ||
3262 | tem = Fkeymapp (def); | |
3263 | if (!NILP (tem)) | |
3264 | result = menu_bar_one_keymap (def, result); | |
3265 | } | |
3266 | ||
9f9c0e27 RS |
3267 | for (tail = Vmenu_bar_final_items; CONSP (tail); tail = XCONS (tail)->cdr) |
3268 | { | |
3269 | Lisp_Object elt; | |
3270 | ||
3271 | elt = Fassq (XCONS (tail)->car, result); | |
3272 | if (!NILP (elt)) | |
3273 | result = Fcons (elt, Fdelq (elt, result)); | |
3274 | } | |
a73c5e29 | 3275 | |
85e28fa2 | 3276 | result = Fnreverse (result); |
47d319aa | 3277 | Vinhibit_quit = oquit; |
85e28fa2 | 3278 | return result; |
5ec75a55 RS |
3279 | } |
3280 | \f | |
3281 | /* Scan one map KEYMAP, accumulating any menu items it defines | |
3282 | that have not yet been seen in RESULT. Return the updated RESULT. */ | |
3283 | ||
3284 | static Lisp_Object | |
3285 | menu_bar_one_keymap (keymap, result) | |
3286 | Lisp_Object keymap, result; | |
3287 | { | |
3288 | Lisp_Object tail, item, key, binding, item_string, table; | |
3289 | ||
3290 | /* Loop over all keymap entries that have menu strings. */ | |
3291 | for (tail = keymap; XTYPE (tail) == Lisp_Cons; tail = XCONS (tail)->cdr) | |
3292 | { | |
3293 | item = XCONS (tail)->car; | |
3294 | if (XTYPE (item) == Lisp_Cons) | |
3295 | { | |
3296 | key = XCONS (item)->car; | |
3297 | binding = XCONS (item)->cdr; | |
3298 | if (XTYPE (binding) == Lisp_Cons) | |
3299 | { | |
3300 | item_string = XCONS (binding)->car; | |
3301 | if (XTYPE (item_string) == Lisp_String) | |
3302 | result = menu_bar_item (key, item_string, | |
3303 | Fcdr (binding), result); | |
3304 | } | |
e58aa385 RS |
3305 | else if (EQ (binding, Qundefined)) |
3306 | result = menu_bar_item (key, item_string, | |
ae450a95 | 3307 | binding, result); |
5ec75a55 RS |
3308 | } |
3309 | else if (XTYPE (item) == Lisp_Vector) | |
3310 | { | |
3311 | /* Loop over the char values represented in the vector. */ | |
3312 | int len = XVECTOR (item)->size; | |
3313 | int c; | |
3314 | for (c = 0; c < len; c++) | |
3315 | { | |
3316 | Lisp_Object character; | |
3317 | XFASTINT (character) = c; | |
3318 | binding = XVECTOR (item)->contents[c]; | |
3319 | if (XTYPE (binding) == Lisp_Cons) | |
3320 | { | |
3321 | item_string = XCONS (binding)->car; | |
3322 | if (XTYPE (item_string) == Lisp_String) | |
3323 | result = menu_bar_item (key, item_string, | |
3324 | Fcdr (binding), result); | |
3325 | } | |
e58aa385 RS |
3326 | else if (EQ (binding, Qundefined)) |
3327 | result = menu_bar_item (key, item_string, | |
ae450a95 | 3328 | binding, result); |
5ec75a55 RS |
3329 | } |
3330 | } | |
3331 | } | |
3332 | ||
3333 | return result; | |
3334 | } | |
3335 | ||
3336 | static Lisp_Object | |
3337 | menu_bar_item (key, item_string, def, result) | |
3338 | Lisp_Object key, item_string, def, result; | |
3339 | { | |
e58aa385 | 3340 | Lisp_Object tem; |
5ec75a55 RS |
3341 | Lisp_Object enabled; |
3342 | ||
e58aa385 RS |
3343 | if (EQ (def, Qundefined)) |
3344 | { | |
3345 | /* If a map has an explicit nil as definition, | |
3346 | discard any previously made menu bar item. */ | |
3347 | tem = Fassq (key, result); | |
3348 | return Fdelq (tem, result); | |
3349 | } | |
3350 | ||
5ec75a55 RS |
3351 | /* See if this entry is enabled. */ |
3352 | enabled = Qt; | |
3353 | ||
3354 | if (XTYPE (def) == Lisp_Symbol) | |
3355 | { | |
3356 | /* No property, or nil, means enable. | |
3357 | Otherwise, enable if value is not nil. */ | |
3358 | tem = Fget (def, Qmenu_enable); | |
3359 | if (!NILP (tem)) | |
3360 | enabled = Feval (tem); | |
3361 | } | |
3362 | ||
3363 | /* Add an entry for this key and string | |
3364 | if there is none yet. */ | |
e58aa385 RS |
3365 | tem = Fassq (key, result); |
3366 | if (!NILP (enabled) && NILP (tem)) | |
5ec75a55 RS |
3367 | result = Fcons (Fcons (key, Fcons (item_string, Qnil)), result); |
3368 | ||
3369 | return result; | |
3370 | } | |
3371 | \f | |
284f4730 JB |
3372 | static int echo_flag; |
3373 | static int echo_now; | |
3374 | ||
dcc408a0 RS |
3375 | /* Read a character using menus based on maps in the array MAPS. |
3376 | NMAPS is the length of MAPS. Return nil if there are no menus in the maps. | |
3377 | Return t if we displayed a menu but the user rejected it. | |
7d6de002 RS |
3378 | |
3379 | PREV_EVENT is the previous input event, or nil if we are reading | |
3380 | the first event of a key sequence. | |
3381 | ||
6569cc8d JB |
3382 | If USED_MOUSE_MENU is non-zero, then we set *USED_MOUSE_MENU to 1 |
3383 | if we used a mouse menu to read the input, or zero otherwise. If | |
3384 | USED_MOUSE_MENU is zero, *USED_MOUSE_MENU is left alone. | |
284f4730 JB |
3385 | |
3386 | The prompting is done based on the prompt-string of the map | |
3387 | and the strings associated with various map elements. */ | |
3388 | ||
7617111f | 3389 | static Lisp_Object |
7d6de002 RS |
3390 | read_char_menu_prompt (nmaps, maps, prev_event, used_mouse_menu) |
3391 | int nmaps; | |
3392 | Lisp_Object *maps; | |
3393 | Lisp_Object prev_event; | |
3394 | int *used_mouse_menu; | |
284f4730 | 3395 | { |
7d6de002 RS |
3396 | int mapno; |
3397 | register Lisp_Object name; | |
284f4730 | 3398 | int nlength; |
ff11dfa1 | 3399 | int width = FRAME_WIDTH (selected_frame) - 4; |
7d6de002 RS |
3400 | char *menu = (char *) alloca (width + 4); |
3401 | int idx = -1; | |
3402 | Lisp_Object rest, vector; | |
3403 | ||
6569cc8d JB |
3404 | if (used_mouse_menu) |
3405 | *used_mouse_menu = 0; | |
284f4730 JB |
3406 | |
3407 | /* Use local over global Menu maps */ | |
3408 | ||
7d6de002 RS |
3409 | if (! menu_prompting) |
3410 | return Qnil; | |
3411 | ||
3412 | /* Get the menu name from the first map that has one (a prompt string). */ | |
3413 | for (mapno = 0; mapno < nmaps; mapno++) | |
3414 | { | |
3415 | name = map_prompt (maps[mapno]); | |
3416 | if (!NILP (name)) | |
3417 | break; | |
3418 | } | |
284f4730 | 3419 | |
7d6de002 | 3420 | /* If we don't have any menus, just read a character normally. */ |
dbc4e1c1 | 3421 | if (mapno >= nmaps) |
7d6de002 RS |
3422 | return Qnil; |
3423 | ||
dbc4e1c1 JB |
3424 | #ifdef HAVE_X_WINDOWS |
3425 | #ifdef HAVE_X_MENU | |
7d6de002 RS |
3426 | /* If we got to this point via a mouse click, |
3427 | use a real menu for mouse selection. */ | |
dbc4e1c1 | 3428 | if (EVENT_HAS_PARAMETERS (prev_event)) |
7d6de002 RS |
3429 | { |
3430 | /* Display the menu and get the selection. */ | |
3431 | Lisp_Object *realmaps | |
3432 | = (Lisp_Object *) alloca (nmaps * sizeof (Lisp_Object)); | |
3433 | Lisp_Object value; | |
3434 | int nmaps1 = 0; | |
3435 | ||
3436 | /* Use the maps that are not nil. */ | |
3437 | for (mapno = 0; mapno < nmaps; mapno++) | |
3438 | if (!NILP (maps[mapno])) | |
3439 | realmaps[nmaps1++] = maps[mapno]; | |
3440 | ||
3441 | value = Fx_popup_menu (prev_event, Flist (nmaps1, realmaps)); | |
663258f2 JB |
3442 | if (CONSP (value)) |
3443 | { | |
3444 | /* If we got more than one event, put all but the first | |
3445 | onto this list to be read later. | |
3446 | Return just the first event now. */ | |
3447 | unread_command_events | |
3448 | = nconc2 (XCONS (value)->cdr, unread_command_events); | |
3449 | value = XCONS (value)->car; | |
3450 | } | |
7d6de002 | 3451 | if (NILP (value)) |
dcc408a0 | 3452 | value = Qt; |
6569cc8d JB |
3453 | if (used_mouse_menu) |
3454 | *used_mouse_menu = 1; | |
7d6de002 RS |
3455 | return value; |
3456 | } | |
dbc4e1c1 JB |
3457 | #endif /* HAVE_X_MENU */ |
3458 | #endif /* HAVE_X_WINDOWS */ | |
284f4730 JB |
3459 | |
3460 | /* Prompt string always starts with map's prompt, and a space. */ | |
3461 | strcpy (menu, XSTRING (name)->data); | |
3462 | nlength = XSTRING (name)->size; | |
7d6de002 | 3463 | menu[nlength++] = ':'; |
284f4730 JB |
3464 | menu[nlength++] = ' '; |
3465 | menu[nlength] = 0; | |
3466 | ||
7d6de002 RS |
3467 | /* Start prompting at start of first map. */ |
3468 | mapno = 0; | |
3469 | rest = maps[mapno]; | |
284f4730 JB |
3470 | |
3471 | /* Present the documented bindings, a line at a time. */ | |
3472 | while (1) | |
3473 | { | |
3474 | int notfirst = 0; | |
3475 | int i = nlength; | |
3476 | Lisp_Object obj; | |
3477 | int ch; | |
3478 | ||
284f4730 | 3479 | /* Loop over elements of map. */ |
7d6de002 | 3480 | while (i < width) |
284f4730 | 3481 | { |
7d6de002 | 3482 | Lisp_Object s, elt; |
284f4730 | 3483 | |
7d6de002 RS |
3484 | /* If reached end of map, start at beginning of next map. */ |
3485 | if (NILP (rest)) | |
3486 | { | |
3487 | mapno++; | |
3488 | /* At end of last map, wrap around to first map if just starting, | |
3489 | or end this line if already have something on it. */ | |
3490 | if (mapno == nmaps) | |
284f4730 | 3491 | { |
7d6de002 RS |
3492 | if (notfirst) |
3493 | break; | |
3494 | else | |
3495 | mapno = 0; | |
284f4730 | 3496 | } |
7d6de002 | 3497 | rest = maps[mapno]; |
284f4730 | 3498 | } |
7d6de002 RS |
3499 | |
3500 | /* Look at the next element of the map. */ | |
3501 | if (idx >= 0) | |
3502 | elt = XVECTOR (vector)->contents[idx]; | |
284f4730 | 3503 | else |
7d6de002 RS |
3504 | elt = Fcar_safe (rest); |
3505 | ||
3506 | if (idx < 0 && XTYPE (elt) == Lisp_Vector) | |
284f4730 | 3507 | { |
7d6de002 RS |
3508 | /* If we found a dense table in the keymap, |
3509 | advanced past it, but start scanning its contents. */ | |
3510 | rest = Fcdr_safe (rest); | |
3511 | vector = elt; | |
3512 | idx = 0; | |
284f4730 | 3513 | } |
7d6de002 RS |
3514 | else |
3515 | { | |
3516 | /* An ordinary element. */ | |
3517 | s = Fcar_safe (Fcdr_safe (elt)); | |
3518 | if (XTYPE (s) != Lisp_String) | |
3519 | /* Ignore the element if it has no prompt string. */ | |
3520 | ; | |
3521 | /* If we have room for the prompt string, add it to this line. | |
3522 | If this is the first on the line, always add it. */ | |
3523 | else if (XSTRING (s)->size + i < width | |
3524 | || !notfirst) | |
3525 | { | |
3526 | int thiswidth; | |
284f4730 | 3527 | |
7d6de002 RS |
3528 | /* Punctuate between strings. */ |
3529 | if (notfirst) | |
3530 | { | |
3531 | strcpy (menu + i, ", "); | |
3532 | i += 2; | |
3533 | } | |
3534 | notfirst = 1; | |
3535 | ||
3536 | /* Add as much of string as fits. */ | |
3537 | thiswidth = XSTRING (s)->size; | |
3538 | if (thiswidth + i > width) | |
3539 | thiswidth = width - i; | |
3540 | bcopy (XSTRING (s)->data, menu + i, thiswidth); | |
3541 | i += thiswidth; | |
3542 | } | |
3543 | else | |
3544 | { | |
3545 | /* If this element does not fit, end the line now, | |
3546 | and save the element for the next line. */ | |
3547 | strcpy (menu + i, "..."); | |
3548 | break; | |
3549 | } | |
3550 | ||
3551 | /* Move past this element. */ | |
3552 | if (idx >= 0 && idx + 1 >= XVECTOR (rest)->size) | |
3553 | /* Handle reaching end of dense table. */ | |
3554 | idx = -1; | |
3555 | if (idx >= 0) | |
3556 | idx++; | |
3557 | else | |
3558 | rest = Fcdr_safe (rest); | |
3559 | } | |
284f4730 JB |
3560 | } |
3561 | ||
3562 | /* Prompt with that and read response. */ | |
3563 | message1 (menu); | |
7d6de002 | 3564 | obj = read_char (1, 0, 0, Qnil, 0); |
284f4730 JB |
3565 | |
3566 | if (XTYPE (obj) != Lisp_Int) | |
3567 | return obj; | |
3568 | else | |
3569 | ch = XINT (obj); | |
3570 | ||
f4255cd1 | 3571 | if (! EQ (obj, menu_prompt_more_char) |
284f4730 | 3572 | && (XTYPE (menu_prompt_more_char) != Lisp_Int |
f4255cd1 | 3573 | || ! EQ (obj, make_number (Ctl (XINT (menu_prompt_more_char)))))) |
284f4730 JB |
3574 | return obj; |
3575 | } | |
3576 | } | |
284f4730 JB |
3577 | \f |
3578 | /* Reading key sequences. */ | |
3579 | ||
3580 | /* Follow KEY in the maps in CURRENT[0..NMAPS-1], placing its bindings | |
3581 | in DEFS[0..NMAPS-1]. Set NEXT[i] to DEFS[i] if DEFS[i] is a | |
3582 | keymap, or nil otherwise. Return the index of the first keymap in | |
3583 | which KEY has any binding, or NMAPS if no map has a binding. | |
3584 | ||
3585 | If KEY is a meta ASCII character, treat it like meta-prefix-char | |
3586 | followed by the corresponding non-meta character. Keymaps in | |
3587 | CURRENT with non-prefix bindings for meta-prefix-char become nil in | |
3588 | NEXT. | |
3589 | ||
3590 | When KEY is not defined in any of the keymaps, if it is an upper | |
3591 | case letter and there are bindings for the corresponding lower-case | |
3592 | letter, return the bindings for the lower-case letter. | |
3593 | ||
88cb0656 JB |
3594 | If KEY has no bindings in any of the CURRENT maps, NEXT is left |
3595 | unmodified. | |
3596 | ||
284f4730 JB |
3597 | NEXT may == CURRENT. */ |
3598 | ||
3599 | static int | |
3600 | follow_key (key, nmaps, current, defs, next) | |
3601 | Lisp_Object key; | |
3602 | Lisp_Object *current, *defs, *next; | |
3603 | int nmaps; | |
3604 | { | |
3605 | int i, first_binding; | |
3606 | ||
3607 | /* If KEY is a meta ASCII character, treat it like meta-prefix-char | |
3608 | followed by the corresponding non-meta character. */ | |
86e5706b | 3609 | if (XTYPE (key) == Lisp_Int && (XINT (key) & CHAR_META)) |
284f4730 JB |
3610 | { |
3611 | for (i = 0; i < nmaps; i++) | |
3612 | if (! NILP (current[i])) | |
3613 | { | |
cd21b839 | 3614 | next[i] = |
e74fbc70 | 3615 | get_keyelt (access_keymap (current[i], meta_prefix_char, 1, 0)); |
284f4730 JB |
3616 | |
3617 | /* Note that since we pass the resulting bindings through | |
3618 | get_keymap_1, non-prefix bindings for meta-prefix-char | |
3619 | disappear. */ | |
f4255cd1 | 3620 | next[i] = get_keymap_1 (next[i], 0, 1); |
284f4730 JB |
3621 | } |
3622 | else | |
3623 | next[i] = Qnil; | |
3624 | ||
3625 | current = next; | |
86e5706b | 3626 | XSET (key, Lisp_Int, XFASTINT (key) & ~CHAR_META); |
284f4730 JB |
3627 | } |
3628 | ||
3629 | first_binding = nmaps; | |
3630 | for (i = nmaps - 1; i >= 0; i--) | |
3631 | { | |
3632 | if (! NILP (current[i])) | |
3633 | { | |
e74fbc70 | 3634 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
3635 | if (! NILP (defs[i])) |
3636 | first_binding = i; | |
3637 | } | |
3638 | else | |
3639 | defs[i] = Qnil; | |
3640 | } | |
3641 | ||
3642 | /* When KEY is not defined in any of the keymaps, if it is an upper | |
3643 | case letter and there are bindings for the corresponding | |
3644 | lower-case letter, return the bindings for the lower-case letter. */ | |
3645 | if (first_binding == nmaps | |
3646 | && XTYPE (key) == Lisp_Int | |
bb1ef421 RS |
3647 | && ((((XINT (key) & 0x3ffff) |
3648 | < XSTRING (current_buffer->downcase_table)->size) | |
3649 | && UPPERCASEP (XINT (key) & 0x3ffff)) | |
86e5706b | 3650 | || (XINT (key) & shift_modifier))) |
284f4730 | 3651 | { |
86e5706b RS |
3652 | if (XINT (key) & shift_modifier) |
3653 | XSETINT (key, XINT (key) & ~shift_modifier); | |
3654 | else | |
3655 | XSETINT (key, DOWNCASE (XINT (key))); | |
284f4730 JB |
3656 | |
3657 | first_binding = nmaps; | |
3658 | for (i = nmaps - 1; i >= 0; i--) | |
3659 | { | |
3660 | if (! NILP (current[i])) | |
3661 | { | |
e74fbc70 | 3662 | defs[i] = get_keyelt (access_keymap (current[i], key, 1, 0)); |
284f4730 JB |
3663 | if (! NILP (defs[i])) |
3664 | first_binding = i; | |
3665 | } | |
3666 | else | |
3667 | defs[i] = Qnil; | |
3668 | } | |
3669 | } | |
86e5706b | 3670 | |
284f4730 | 3671 | /* Given the set of bindings we've found, produce the next set of maps. */ |
0a7f1fc0 JB |
3672 | if (first_binding < nmaps) |
3673 | for (i = 0; i < nmaps; i++) | |
f4255cd1 | 3674 | next[i] = NILP (defs[i]) ? Qnil : get_keymap_1 (defs[i], 0, 1); |
284f4730 JB |
3675 | |
3676 | return first_binding; | |
3677 | } | |
3678 | ||
f4255cd1 JB |
3679 | /* Read a sequence of keys that ends with a non prefix character, |
3680 | storing it in KEYBUF, a buffer of size BUFSIZE. | |
3681 | Prompt with PROMPT. | |
284f4730 | 3682 | Return the length of the key sequence stored. |
dcc408a0 | 3683 | Return -1 if the user rejected a command menu. |
284f4730 | 3684 | |
f4255cd1 JB |
3685 | Echo starting immediately unless `prompt' is 0. |
3686 | ||
3687 | Where a key sequence ends depends on the currently active keymaps. | |
3688 | These include any minor mode keymaps active in the current buffer, | |
3689 | the current buffer's local map, and the global map. | |
3690 | ||
3691 | If a key sequence has no other bindings, we check Vfunction_key_map | |
3692 | to see if some trailing subsequence might be the beginning of a | |
3693 | function key's sequence. If so, we try to read the whole function | |
3694 | key, and substitute its symbolic name into the key sequence. | |
3695 | ||
fbcd35bd JB |
3696 | We ignore unbound `down-' mouse clicks. We turn unbound `drag-' and |
3697 | `double-' events into similar click events, if that would make them | |
3698 | bound. We try to turn `triple-' events first into `double-' events, | |
3699 | then into clicks. | |
f4255cd1 JB |
3700 | |
3701 | If we get a mouse click in a mode line, vertical divider, or other | |
3702 | non-text area, we treat the click as if it were prefixed by the | |
3703 | symbol denoting that area - `mode-line', `vertical-line', or | |
3704 | whatever. | |
3705 | ||
3706 | If the sequence starts with a mouse click, we read the key sequence | |
3707 | with respect to the buffer clicked on, not the current buffer. | |
284f4730 | 3708 | |
f4255cd1 JB |
3709 | If the user switches frames in the midst of a key sequence, we put |
3710 | off the switch-frame event until later; the next call to | |
3711 | read_char will return it. */ | |
48e416d4 | 3712 | |
284f4730 JB |
3713 | static int |
3714 | read_key_sequence (keybuf, bufsize, prompt) | |
3715 | Lisp_Object *keybuf; | |
3716 | int bufsize; | |
f4255cd1 | 3717 | char *prompt; |
284f4730 | 3718 | { |
f4255cd1 JB |
3719 | int count = specpdl_ptr - specpdl; |
3720 | ||
284f4730 JB |
3721 | /* How many keys there are in the current key sequence. */ |
3722 | int t; | |
3723 | ||
284f4730 JB |
3724 | /* The length of the echo buffer when we started reading, and |
3725 | the length of this_command_keys when we started reading. */ | |
3726 | int echo_start; | |
f4255cd1 | 3727 | int keys_start; |
284f4730 JB |
3728 | |
3729 | /* The number of keymaps we're scanning right now, and the number of | |
3730 | keymaps we have allocated space for. */ | |
3731 | int nmaps; | |
3732 | int nmaps_allocated = 0; | |
3733 | ||
284f4730 JB |
3734 | /* defs[0..nmaps-1] are the definitions of KEYBUF[0..t-1] in |
3735 | the current keymaps. */ | |
3736 | Lisp_Object *defs; | |
3737 | ||
f4255cd1 JB |
3738 | /* submaps[0..nmaps-1] are the prefix definitions of KEYBUF[0..t-1] |
3739 | in the current keymaps, or nil where it is not a prefix. */ | |
3740 | Lisp_Object *submaps; | |
3741 | ||
3742 | /* The index in defs[] of the first keymap that has a binding for | |
3743 | this key sequence. In other words, the lowest i such that | |
3744 | defs[i] is non-nil. */ | |
284f4730 JB |
3745 | int first_binding; |
3746 | ||
f4255cd1 | 3747 | /* If t < mock_input, then KEYBUF[t] should be read as the next |
253598e4 JB |
3748 | input key. |
3749 | ||
3750 | We use this to recover after recognizing a function key. Once we | |
3751 | realize that a suffix of the current key sequence is actually a | |
3752 | function key's escape sequence, we replace the suffix with the | |
3753 | function key's binding from Vfunction_key_map. Now keybuf | |
f4255cd1 JB |
3754 | contains a new and different key sequence, so the echo area, |
3755 | this_command_keys, and the submaps and defs arrays are wrong. In | |
3756 | this situation, we set mock_input to t, set t to 0, and jump to | |
3757 | restart_sequence; the loop will read keys from keybuf up until | |
3758 | mock_input, thus rebuilding the state; and then it will resume | |
3759 | reading characters from the keyboard. */ | |
284f4730 JB |
3760 | int mock_input = 0; |
3761 | ||
253598e4 | 3762 | /* If the sequence is unbound in submaps[], then |
f4255cd1 JB |
3763 | keybuf[fkey_start..fkey_end-1] is a prefix in Vfunction_key_map, |
3764 | and fkey_map is its binding. | |
253598e4 | 3765 | |
f4255cd1 JB |
3766 | These might be > t, indicating that all function key scanning |
3767 | should hold off until t reaches them. We do this when we've just | |
3768 | recognized a function key, to avoid searching for the function | |
3769 | key's again in Vfunction_key_map. */ | |
284f4730 | 3770 | int fkey_start = 0, fkey_end = 0; |
4efda7dd | 3771 | Lisp_Object fkey_map; |
284f4730 | 3772 | |
a612e298 RS |
3773 | /* Likewise, for key_translation_map. */ |
3774 | int keytran_start = 0, keytran_end = 0; | |
3775 | Lisp_Object keytran_map; | |
3776 | ||
cd21b839 JB |
3777 | /* If we receive a ``switch-frame'' event in the middle of a key sequence, |
3778 | we put it off for later. While we're reading, we keep the event here. */ | |
4efda7dd | 3779 | Lisp_Object delayed_switch_frame; |
cd21b839 | 3780 | |
4efda7dd RS |
3781 | Lisp_Object first_event; |
3782 | ||
3783 | int junk; | |
3784 | ||
3785 | last_nonmenu_event = Qnil; | |
3786 | ||
3787 | delayed_switch_frame = Qnil; | |
3788 | fkey_map = Vfunction_key_map; | |
a612e298 | 3789 | keytran_map = Vkey_translation_map; |
f4255cd1 | 3790 | |
a612e298 | 3791 | /* If there is no function-key-map, turn off function key scanning. */ |
f4255cd1 JB |
3792 | if (NILP (Fkeymapp (Vfunction_key_map))) |
3793 | fkey_start = fkey_end = bufsize + 1; | |
3794 | ||
a612e298 RS |
3795 | /* If there is no key-translation-map, turn off scanning. */ |
3796 | if (NILP (Fkeymapp (Vkey_translation_map))) | |
3797 | keytran_start = keytran_end = bufsize + 1; | |
3798 | ||
284f4730 JB |
3799 | if (INTERACTIVE) |
3800 | { | |
3801 | if (prompt) | |
3802 | echo_prompt (prompt); | |
3803 | else if (cursor_in_echo_area) | |
3804 | /* This doesn't put in a dash if the echo buffer is empty, so | |
3805 | you don't always see a dash hanging out in the minibuffer. */ | |
3806 | echo_dash (); | |
284f4730 JB |
3807 | } |
3808 | ||
f4255cd1 JB |
3809 | /* Record the initial state of the echo area and this_command_keys; |
3810 | we will need to restore them if we replay a key sequence. */ | |
0a7f1fc0 | 3811 | if (INTERACTIVE) |
f4255cd1 JB |
3812 | echo_start = echo_length (); |
3813 | keys_start = this_command_key_count; | |
0a7f1fc0 | 3814 | |
a6d53864 RS |
3815 | #if 0 /* This doesn't quite work, because some of the things |
3816 | that read_char does cannot safely be bypassed. | |
3817 | It seems too risky to try to make this work right. */ | |
4efda7dd RS |
3818 | /* Read the first char of the sequence specially, before setting |
3819 | up any keymaps, in case a filter runs and switches buffers on us. */ | |
3820 | first_event = read_char (!prompt, 0, submaps, last_nonmenu_event, | |
3821 | &junk); | |
a6d53864 | 3822 | #endif |
4efda7dd | 3823 | |
7b4aedb9 JB |
3824 | /* We jump here when the key sequence has been thoroughly changed, and |
3825 | we need to rescan it starting from the beginning. When we jump here, | |
3826 | keybuf[0..mock_input] holds the sequence we should reread. */ | |
07d2b8de | 3827 | replay_sequence: |
7b4aedb9 | 3828 | |
f4255cd1 | 3829 | /* Build our list of keymaps. |
07d2b8de JB |
3830 | If we recognize a function key and replace its escape sequence in |
3831 | keybuf with its symbol, or if the sequence starts with a mouse | |
3832 | click and we need to switch buffers, we jump back here to rebuild | |
3833 | the initial keymaps from the current buffer. */ | |
284f4730 JB |
3834 | { |
3835 | Lisp_Object *maps; | |
3836 | ||
3837 | nmaps = current_minor_maps (0, &maps) + 2; | |
3838 | if (nmaps > nmaps_allocated) | |
3839 | { | |
253598e4 | 3840 | submaps = (Lisp_Object *) alloca (nmaps * sizeof (submaps[0])); |
284f4730 JB |
3841 | defs = (Lisp_Object *) alloca (nmaps * sizeof (defs[0])); |
3842 | nmaps_allocated = nmaps; | |
3843 | } | |
253598e4 | 3844 | bcopy (maps, submaps, (nmaps - 2) * sizeof (submaps[0])); |
497ba7a1 RS |
3845 | #ifdef USE_TEXT_PROPERTIES |
3846 | submaps[nmaps-2] = get_local_map (PT, current_buffer); | |
3847 | #else | |
a6d53864 | 3848 | submaps[nmaps-2] = current_buffer->keymap; |
497ba7a1 | 3849 | #endif |
7e6992e0 | 3850 | submaps[nmaps-1] = current_global_map; |
284f4730 JB |
3851 | } |
3852 | ||
3853 | /* Find an accurate initial value for first_binding. */ | |
3854 | for (first_binding = 0; first_binding < nmaps; first_binding++) | |
253598e4 | 3855 | if (! NILP (submaps[first_binding])) |
284f4730 JB |
3856 | break; |
3857 | ||
f4255cd1 JB |
3858 | /* We jump here when a function key substitution has forced us to |
3859 | reprocess the current key sequence. keybuf[0..mock_input] is the | |
3860 | sequence we want to reread. */ | |
3861 | t = 0; | |
3862 | ||
3863 | /* These are no-ops the first time through, but if we restart, they | |
3864 | revert the echo area and this_command_keys to their original state. */ | |
3865 | this_command_key_count = keys_start; | |
3866 | if (INTERACTIVE) | |
3867 | echo_truncate (echo_start); | |
3868 | ||
cca310da JB |
3869 | /* If the best binding for the current key sequence is a keymap, or |
3870 | we may be looking at a function key's escape sequence, keep on | |
3871 | reading. */ | |
253598e4 | 3872 | while ((first_binding < nmaps && ! NILP (submaps[first_binding])) |
cca310da JB |
3873 | || (first_binding >= nmaps |
3874 | && fkey_start < t | |
3875 | /* mock input is never part of a function key's sequence. */ | |
a612e298 RS |
3876 | && mock_input <= fkey_start) |
3877 | || (first_binding >= nmaps | |
3878 | && keytran_start < t | |
3879 | /* mock input is never part of a function key's sequence. */ | |
3880 | && mock_input <= keytran_start)) | |
284f4730 JB |
3881 | { |
3882 | Lisp_Object key; | |
7d6de002 | 3883 | int used_mouse_menu = 0; |
284f4730 | 3884 | |
7b4aedb9 JB |
3885 | /* Where the last real key started. If we need to throw away a |
3886 | key that has expanded into more than one element of keybuf | |
3887 | (say, a mouse click on the mode line which is being treated | |
3888 | as [mode-line (mouse-...)], then we backtrack to this point | |
3889 | of keybuf. */ | |
3890 | int last_real_key_start; | |
3891 | ||
0a7f1fc0 JB |
3892 | /* These variables are analogous to echo_start and keys_start; |
3893 | while those allow us to restart the entire key sequence, | |
3894 | echo_local_start and keys_local_start allow us to throw away | |
3895 | just one key. */ | |
f4255cd1 JB |
3896 | int echo_local_start, keys_local_start, local_first_binding; |
3897 | ||
284f4730 JB |
3898 | if (t >= bufsize) |
3899 | error ("key sequence too long"); | |
3900 | ||
f4255cd1 JB |
3901 | if (INTERACTIVE) |
3902 | echo_local_start = echo_length (); | |
3903 | keys_local_start = this_command_key_count; | |
3904 | local_first_binding = first_binding; | |
3905 | ||
3906 | replay_key: | |
0a7f1fc0 | 3907 | /* These are no-ops, unless we throw away a keystroke below and |
f4255cd1 JB |
3908 | jumped back up to replay_key; in that case, these restore the |
3909 | variables to their original state, allowing us to replay the | |
0a7f1fc0 | 3910 | loop. */ |
f4255cd1 JB |
3911 | if (INTERACTIVE) |
3912 | echo_truncate (echo_local_start); | |
0a7f1fc0 JB |
3913 | this_command_key_count = keys_local_start; |
3914 | first_binding = local_first_binding; | |
3915 | ||
7e85b935 RS |
3916 | /* By default, assume each event is "real". */ |
3917 | last_real_key_start = t; | |
3918 | ||
f4255cd1 | 3919 | /* Does mock_input indicate that we are re-reading a key sequence? */ |
284f4730 JB |
3920 | if (t < mock_input) |
3921 | { | |
3922 | key = keybuf[t]; | |
3923 | add_command_key (key); | |
3924 | echo_char (key); | |
3925 | } | |
253598e4 JB |
3926 | |
3927 | /* If not, we should actually read a character. */ | |
284f4730 JB |
3928 | else |
3929 | { | |
a6d53864 RS |
3930 | struct buffer *buf = current_buffer; |
3931 | ||
a6d53864 RS |
3932 | key = read_char (!prompt, nmaps, submaps, last_nonmenu_event, |
3933 | &used_mouse_menu); | |
284f4730 | 3934 | |
dcc408a0 RS |
3935 | /* read_char returns t when it shows a menu and the user rejects it. |
3936 | Just return -1. */ | |
3937 | if (EQ (key, Qt)) | |
3938 | return -1; | |
3939 | ||
f4255cd1 | 3940 | /* read_char returns -1 at the end of a macro. |
284f4730 JB |
3941 | Emacs 18 handles this by returning immediately with a |
3942 | zero, so that's what we'll do. */ | |
86e5706b | 3943 | if (XTYPE (key) == Lisp_Int && XINT (key) == -1) |
cd21b839 | 3944 | { |
f4255cd1 JB |
3945 | t = 0; |
3946 | goto done; | |
cd21b839 | 3947 | } |
284f4730 JB |
3948 | |
3949 | Vquit_flag = Qnil; | |
7e85b935 | 3950 | } |
284f4730 | 3951 | |
7e85b935 RS |
3952 | /* Clicks in non-text areas get prefixed by the symbol |
3953 | in their CHAR-ADDRESS field. For example, a click on | |
3954 | the mode line is prefixed by the symbol `mode-line'. | |
3955 | ||
3956 | Furthermore, key sequences beginning with mouse clicks | |
3957 | are read using the keymaps of the buffer clicked on, not | |
3958 | the current buffer. So we may have to switch the buffer | |
3959 | here. | |
3960 | ||
3961 | When we turn one event into two events, we must make sure | |
3962 | that neither of the two looks like the original--so that, | |
3963 | if we replay the events, they won't be expanded again. | |
3964 | If not for this, such reexpansion could happen either here | |
3965 | or when user programs play with this-command-keys. */ | |
3966 | if (EVENT_HAS_PARAMETERS (key)) | |
3967 | { | |
3968 | Lisp_Object kind = EVENT_HEAD_KIND (EVENT_HEAD (key)); | |
cca310da | 3969 | |
7e85b935 | 3970 | if (EQ (kind, Qmouse_click)) |
0a7f1fc0 | 3971 | { |
7e85b935 RS |
3972 | Lisp_Object window = POSN_WINDOW (EVENT_START (key)); |
3973 | Lisp_Object posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
f4255cd1 | 3974 | |
7e85b935 | 3975 | if (XTYPE (posn) == Lisp_Cons) |
0a7f1fc0 | 3976 | { |
7e85b935 RS |
3977 | /* We're looking at the second event of a |
3978 | sequence which we expanded before. Set | |
3979 | last_real_key_start appropriately. */ | |
3980 | if (t > 0) | |
3981 | last_real_key_start = t - 1; | |
cd21b839 | 3982 | } |
7e85b935 RS |
3983 | |
3984 | /* Key sequences beginning with mouse clicks are | |
3985 | read using the keymaps in the buffer clicked on, | |
3986 | not the current buffer. If we're at the | |
3987 | beginning of a key sequence, switch buffers. */ | |
3988 | if (last_real_key_start == 0 | |
3989 | && XTYPE (window) == Lisp_Window | |
3990 | && XTYPE (XWINDOW (window)->buffer) == Lisp_Buffer | |
3991 | && XBUFFER (XWINDOW (window)->buffer) != current_buffer) | |
cd21b839 | 3992 | { |
7e85b935 RS |
3993 | keybuf[t] = key; |
3994 | mock_input = t + 1; | |
3995 | ||
3996 | /* Arrange to go back to the original buffer once we're | |
3997 | done reading the key sequence. Note that we can't | |
3998 | use save_excursion_{save,restore} here, because they | |
3999 | save point as well as the current buffer; we don't | |
4000 | want to save point, because redisplay may change it, | |
4001 | to accommodate a Fset_window_start or something. We | |
4002 | don't want to do this at the top of the function, | |
4003 | because we may get input from a subprocess which | |
4004 | wants to change the selected window and stuff (say, | |
4005 | emacsclient). */ | |
4006 | record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); | |
4007 | ||
4008 | set_buffer_internal (XBUFFER (XWINDOW (window)->buffer)); | |
4009 | goto replay_sequence; | |
0a7f1fc0 | 4010 | } |
7e85b935 | 4011 | else if (XTYPE (posn) == Lisp_Symbol) |
5ec75a55 | 4012 | { |
7e85b935 RS |
4013 | /* Expand mode-line and scroll-bar events into two events: |
4014 | use posn as a fake prefix key. */ | |
5ec75a55 | 4015 | |
7e85b935 RS |
4016 | if (t + 1 >= bufsize) |
4017 | error ("key sequence too long"); | |
4018 | keybuf[t] = posn; | |
4019 | keybuf[t+1] = key; | |
4020 | mock_input = t + 2; | |
4021 | ||
4022 | /* Zap the position in key, so we know that we've | |
4023 | expanded it, and don't try to do so again. */ | |
4024 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4025 | = Fcons (posn, Qnil); | |
4026 | goto replay_key; | |
5ec75a55 | 4027 | } |
0a7f1fc0 | 4028 | } |
7e85b935 | 4029 | else if (EQ (kind, Qswitch_frame)) |
a6d53864 | 4030 | { |
7e85b935 RS |
4031 | /* If we're at the beginning of a key sequence, go |
4032 | ahead and return this event. If we're in the | |
4033 | midst of a key sequence, delay it until the end. */ | |
4034 | if (t > 0) | |
4035 | { | |
4036 | delayed_switch_frame = key; | |
4037 | goto replay_key; | |
4038 | } | |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | Lisp_Object posn = POSN_BUFFER_POSN (EVENT_START (key)); | |
4043 | ||
4044 | /* Handle menu-bar events: | |
4045 | insert the dummy prefix event `menu-bar'. */ | |
4046 | if (EQ (posn, Qmenu_bar)) | |
4047 | { | |
4048 | if (t + 1 >= bufsize) | |
4049 | error ("key sequence too long"); | |
4050 | /* Run the Lucid hook. */ | |
4051 | call1 (Vrun_hooks, Qactivate_menubar_hook); | |
4052 | /* If it has changed current-menubar from previous value, | |
4053 | really recompute the menubar from the value. */ | |
4054 | if (! NILP (Vlucid_menu_bar_dirty_flag)) | |
4055 | call0 (Qrecompute_lucid_menubar); | |
4056 | keybuf[t] = posn; | |
4057 | keybuf[t+1] = key; | |
4058 | ||
4059 | /* Zap the position in key, so we know that we've | |
4060 | expanded it, and don't try to do so again. */ | |
4061 | POSN_BUFFER_POSN (EVENT_START (key)) | |
4062 | = Fcons (posn, Qnil); | |
4063 | ||
4064 | mock_input = t + 2; | |
4065 | goto replay_sequence; | |
4066 | } | |
4067 | else if (XTYPE (posn) == Lisp_Cons) | |
4068 | { | |
4069 | /* We're looking at the second event of a | |
4070 | sequence which we expanded before. Set | |
4071 | last_real_key_start appropriately. */ | |
4072 | if (last_real_key_start == t && t > 0) | |
4073 | last_real_key_start = t - 1; | |
4074 | } | |
a6d53864 | 4075 | } |
284f4730 | 4076 | } |
f4255cd1 JB |
4077 | |
4078 | /* We have finally decided that KEY is something we might want | |
4079 | to look up. */ | |
284f4730 JB |
4080 | first_binding = (follow_key (key, |
4081 | nmaps - first_binding, | |
253598e4 | 4082 | submaps + first_binding, |
284f4730 | 4083 | defs + first_binding, |
253598e4 | 4084 | submaps + first_binding) |
284f4730 | 4085 | + first_binding); |
0a7f1fc0 | 4086 | |
f4255cd1 | 4087 | /* If KEY wasn't bound, we'll try some fallbacks. */ |
0a7f1fc0 JB |
4088 | if (first_binding >= nmaps) |
4089 | { | |
4090 | Lisp_Object head = EVENT_HEAD (key); | |
4091 | ||
7e85b935 RS |
4092 | if (EQ (head, Vhelp_char)) |
4093 | { | |
4094 | read_key_sequence_cmd = Vprefix_help_command; | |
4095 | keybuf[t++] = key; | |
4096 | last_nonmenu_event = key; | |
4097 | goto done; | |
4098 | } | |
4099 | ||
0a7f1fc0 JB |
4100 | if (XTYPE (head) == Lisp_Symbol) |
4101 | { | |
4102 | Lisp_Object breakdown = parse_modifiers (head); | |
80645119 | 4103 | int modifiers = XINT (XCONS (XCONS (breakdown)->cdr)->car); |
0a7f1fc0 | 4104 | |
559f9d04 RS |
4105 | /* Attempt to reduce an unbound mouse event to a simpler |
4106 | event that is bound: | |
4107 | Drags reduce to clicks. | |
4108 | Double-clicks reduce to clicks. | |
4109 | Triple-clicks reduce to double-clicks, then to clicks. | |
4110 | Down-clicks are eliminated. | |
4111 | Double-downs reduce to downs, then are eliminated. | |
4112 | Triple-downs reduce to double-downs, then to downs, | |
4113 | then are eliminated. */ | |
4114 | if (modifiers & (down_modifier | drag_modifier | |
4115 | | double_modifier | triple_modifier)) | |
0a7f1fc0 | 4116 | { |
559f9d04 RS |
4117 | while (modifiers & (down_modifier | drag_modifier |
4118 | | double_modifier | triple_modifier)) | |
fbcd35bd JB |
4119 | { |
4120 | Lisp_Object new_head, new_click; | |
4121 | if (modifiers & triple_modifier) | |
4122 | modifiers ^= (double_modifier | triple_modifier); | |
559f9d04 | 4123 | else if (modifiers & (drag_modifier | double_modifier)) |
fbcd35bd | 4124 | modifiers &= ~(drag_modifier | double_modifier); |
559f9d04 RS |
4125 | else |
4126 | { | |
4127 | /* Dispose of this `down' event by simply jumping | |
4128 | back to replay_key, to get another event. | |
4129 | ||
4130 | Note that if this event came from mock input, | |
4131 | then just jumping back to replay_key will just | |
4132 | hand it to us again. So we have to wipe out any | |
4133 | mock input. | |
4134 | ||
4135 | We could delete keybuf[t] and shift everything | |
4136 | after that to the left by one spot, but we'd also | |
4137 | have to fix up any variable that points into | |
4138 | keybuf, and shifting isn't really necessary | |
4139 | anyway. | |
4140 | ||
4141 | Adding prefixes for non-textual mouse clicks | |
4142 | creates two characters of mock input, and both | |
4143 | must be thrown away. If we're only looking at | |
4144 | the prefix now, we can just jump back to | |
4145 | replay_key. On the other hand, if we've already | |
4146 | processed the prefix, and now the actual click | |
4147 | itself is giving us trouble, then we've lost the | |
4148 | state of the keymaps we want to backtrack to, and | |
4149 | we need to replay the whole sequence to rebuild | |
4150 | it. | |
4151 | ||
4152 | Beyond that, only function key expansion could | |
4153 | create more than two keys, but that should never | |
4154 | generate mouse events, so it's okay to zero | |
4155 | mock_input in that case too. | |
4156 | ||
4157 | Isn't this just the most wonderful code ever? */ | |
4158 | if (t == last_real_key_start) | |
4159 | { | |
4160 | mock_input = 0; | |
4161 | goto replay_key; | |
4162 | } | |
4163 | else | |
4164 | { | |
4165 | mock_input = last_real_key_start; | |
4166 | goto replay_sequence; | |
4167 | } | |
4168 | } | |
4169 | ||
27203ead RS |
4170 | new_head |
4171 | = apply_modifiers (modifiers, XCONS (breakdown)->car); | |
4172 | new_click | |
4173 | = Fcons (new_head, Fcons (EVENT_START (key), Qnil)); | |
fbcd35bd JB |
4174 | |
4175 | /* Look for a binding for this new key. follow_key | |
4176 | promises that it didn't munge submaps the | |
4177 | last time we called it, since key was unbound. */ | |
27203ead RS |
4178 | first_binding |
4179 | = (follow_key (new_click, | |
4180 | nmaps - local_first_binding, | |
4181 | submaps + local_first_binding, | |
4182 | defs + local_first_binding, | |
4183 | submaps + local_first_binding) | |
4184 | + local_first_binding); | |
fbcd35bd JB |
4185 | |
4186 | /* If that click is bound, go for it. */ | |
4187 | if (first_binding < nmaps) | |
4188 | { | |
4189 | key = new_click; | |
4190 | break; | |
4191 | } | |
4192 | /* Otherwise, we'll leave key set to the drag event. */ | |
4193 | } | |
0a7f1fc0 JB |
4194 | } |
4195 | } | |
4196 | } | |
4197 | ||
284f4730 | 4198 | keybuf[t++] = key; |
7d6de002 RS |
4199 | /* Normally, last_nonmenu_event gets the previous key we read. |
4200 | But when a mouse popup menu is being used, | |
4201 | we don't update last_nonmenu_event; it continues to hold the mouse | |
4202 | event that preceded the first level of menu. */ | |
4203 | if (!used_mouse_menu) | |
4204 | last_nonmenu_event = key; | |
284f4730 JB |
4205 | |
4206 | /* If the sequence is unbound, see if we can hang a function key | |
253598e4 JB |
4207 | off the end of it. We only want to scan real keyboard input |
4208 | for function key sequences, so if mock_input says that we're | |
f4255cd1 | 4209 | re-reading old events, don't examine it. */ |
284f4730 | 4210 | if (first_binding >= nmaps |
253598e4 | 4211 | && t >= mock_input) |
284f4730 JB |
4212 | { |
4213 | Lisp_Object fkey_next; | |
4214 | ||
4215 | /* Scan from fkey_end until we find a bound suffix. */ | |
4216 | while (fkey_end < t) | |
4217 | { | |
f4255cd1 JB |
4218 | Lisp_Object key; |
4219 | ||
4220 | key = keybuf[fkey_end++]; | |
067ffa38 JB |
4221 | /* Look up meta-characters by prefixing them |
4222 | with meta_prefix_char. I hate this. */ | |
d3cc13fa | 4223 | if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier) |
f4255cd1 | 4224 | { |
e74fbc70 RS |
4225 | fkey_next |
4226 | = get_keymap_1 | |
f4255cd1 | 4227 | (get_keyelt |
e74fbc70 | 4228 | (access_keymap (fkey_map, meta_prefix_char, 1, 0)), |
f4255cd1 | 4229 | 0, 1); |
d3cc13fa | 4230 | XFASTINT (key) = XFASTINT (key) & ~meta_modifier; |
f4255cd1 | 4231 | } |
067ffa38 JB |
4232 | else |
4233 | fkey_next = fkey_map; | |
4234 | ||
e74fbc70 RS |
4235 | fkey_next |
4236 | = get_keyelt (access_keymap (fkey_next, key, 1, 0)); | |
067ffa38 | 4237 | |
85bc5181 | 4238 | /* If keybuf[fkey_start..fkey_end] is bound in the |
a764a753 | 4239 | function key map and it's a suffix of the current |
85bc5181 | 4240 | sequence (i.e. fkey_end == t), replace it with |
a764a753 | 4241 | the binding and restart with fkey_start at the end. */ |
f5ea6163 | 4242 | if ((VECTORP (fkey_next) || STRINGP (fkey_next)) |
284f4730 JB |
4243 | && fkey_end == t) |
4244 | { | |
2e864a76 | 4245 | int len = XFASTINT (Flength (fkey_next)); |
f5ea6163 JB |
4246 | |
4247 | t = fkey_start + len; | |
284f4730 JB |
4248 | if (t >= bufsize) |
4249 | error ("key sequence too long"); | |
4250 | ||
f5ea6163 JB |
4251 | if (VECTORP (fkey_next)) |
4252 | bcopy (XVECTOR (fkey_next)->contents, | |
4253 | keybuf + fkey_start, | |
4254 | (t - fkey_start) * sizeof (keybuf[0])); | |
4255 | else if (STRINGP (fkey_next)) | |
4256 | { | |
4257 | int i; | |
4258 | ||
4259 | for (i = 0; i < len; i++) | |
4260 | XFASTINT (keybuf[fkey_start + i]) = | |
4261 | XSTRING (fkey_next)->data[i]; | |
4262 | } | |
284f4730 JB |
4263 | |
4264 | mock_input = t; | |
4265 | fkey_start = fkey_end = t; | |
32e6d806 | 4266 | fkey_map = Vfunction_key_map; |
284f4730 | 4267 | |
f4255cd1 | 4268 | goto replay_sequence; |
284f4730 JB |
4269 | } |
4270 | ||
f4255cd1 | 4271 | fkey_map = get_keymap_1 (fkey_next, 0, 1); |
284f4730 | 4272 | |
a764a753 JB |
4273 | /* If we no longer have a bound suffix, try a new positions for |
4274 | fkey_start. */ | |
284f4730 JB |
4275 | if (NILP (fkey_map)) |
4276 | { | |
4277 | fkey_end = ++fkey_start; | |
4278 | fkey_map = Vfunction_key_map; | |
4279 | } | |
4280 | } | |
4281 | } | |
a612e298 RS |
4282 | |
4283 | /* Look for this sequence in key-translation-map. */ | |
4284 | { | |
4285 | Lisp_Object keytran_next; | |
4286 | ||
4287 | /* Scan from keytran_end until we find a bound suffix. */ | |
4288 | while (keytran_end < t) | |
4289 | { | |
4290 | Lisp_Object key; | |
4291 | ||
4292 | key = keybuf[keytran_end++]; | |
4293 | /* Look up meta-characters by prefixing them | |
4294 | with meta_prefix_char. I hate this. */ | |
4295 | if (XTYPE (key) == Lisp_Int && XINT (key) & meta_modifier) | |
4296 | { | |
4297 | keytran_next | |
4298 | = get_keymap_1 | |
4299 | (get_keyelt | |
4300 | (access_keymap (keytran_map, meta_prefix_char, 1, 0)), | |
4301 | 0, 1); | |
4302 | XFASTINT (key) = XFASTINT (key) & ~meta_modifier; | |
4303 | } | |
4304 | else | |
4305 | keytran_next = keytran_map; | |
4306 | ||
4307 | keytran_next | |
4308 | = get_keyelt (access_keymap (keytran_next, key, 1, 0)); | |
4309 | ||
4310 | /* If keybuf[keytran_start..keytran_end] is bound in the | |
4311 | function key map and it's a suffix of the current | |
4312 | sequence (i.e. keytran_end == t), replace it with | |
4313 | the binding and restart with keytran_start at the end. */ | |
4314 | if ((VECTORP (keytran_next) || STRINGP (keytran_next)) | |
4315 | && keytran_end == t) | |
4316 | { | |
2e864a76 | 4317 | int len = XFASTINT (Flength (keytran_next)); |
a612e298 RS |
4318 | |
4319 | t = keytran_start + len; | |
4320 | if (t >= bufsize) | |
4321 | error ("key sequence too long"); | |
4322 | ||
4323 | if (VECTORP (keytran_next)) | |
4324 | bcopy (XVECTOR (keytran_next)->contents, | |
4325 | keybuf + keytran_start, | |
4326 | (t - keytran_start) * sizeof (keybuf[0])); | |
4327 | else if (STRINGP (keytran_next)) | |
4328 | { | |
4329 | int i; | |
4330 | ||
4331 | for (i = 0; i < len; i++) | |
4332 | XFASTINT (keybuf[keytran_start + i]) | |
4333 | = XSTRING (keytran_next)->data[i]; | |
4334 | } | |
4335 | ||
4336 | mock_input = t; | |
4337 | keytran_start = keytran_end = t; | |
4338 | keytran_map = Vkey_translation_map; | |
4339 | ||
4340 | goto replay_sequence; | |
4341 | } | |
4342 | ||
4343 | keytran_map = get_keymap_1 (keytran_next, 0, 1); | |
4344 | ||
4345 | /* If we no longer have a bound suffix, try a new positions for | |
4346 | keytran_start. */ | |
4347 | if (NILP (keytran_map)) | |
4348 | { | |
4349 | keytran_end = ++keytran_start; | |
4350 | keytran_map = Vkey_translation_map; | |
4351 | } | |
4352 | } | |
4353 | } | |
284f4730 JB |
4354 | } |
4355 | ||
4356 | read_key_sequence_cmd = (first_binding < nmaps | |
4357 | ? defs[first_binding] | |
4358 | : Qnil); | |
4359 | ||
f4255cd1 | 4360 | done: |
cd21b839 | 4361 | unread_switch_frame = delayed_switch_frame; |
f4255cd1 | 4362 | unbind_to (count, Qnil); |
07f76a14 JB |
4363 | |
4364 | /* Occasionally we fabricate events, perhaps by expanding something | |
4365 | according to function-key-map, or by adding a prefix symbol to a | |
4366 | mouse click in the scroll bar or modeline. In this cases, return | |
4367 | the entire generated key sequence, even if we hit an unbound | |
4368 | prefix or a definition before the end. This means that you will | |
4369 | be able to push back the event properly, and also means that | |
4370 | read-key-sequence will always return a logical unit. | |
4371 | ||
4372 | Better ideas? */ | |
cca310da JB |
4373 | for (; t < mock_input; t++) |
4374 | { | |
4375 | echo_char (keybuf[t]); | |
4376 | add_command_key (keybuf[t]); | |
4377 | } | |
07f76a14 | 4378 | |
284f4730 JB |
4379 | return t; |
4380 | } | |
4381 | ||
a612e298 RS |
4382 | #if 0 /* This doc string is too long for some compilers. |
4383 | This commented-out definition serves for DOC. */ | |
c0a58692 | 4384 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, |
284f4730 JB |
4385 | "Read a sequence of keystrokes and return as a string or vector.\n\ |
4386 | The sequence is sufficient to specify a non-prefix command in the\n\ | |
4387 | current local and global maps.\n\ | |
4388 | \n\ | |
c0a58692 RS |
4389 | First arg PROMPT is a prompt string. If nil, do not prompt specially.\n\ |
4390 | Second (optional) arg CONTINUE-ECHO, if non-nil, means this key echos\n\ | |
4391 | as a continuation of the previous key.\n\ | |
284f4730 | 4392 | \n\ |
cb5df6ae JB |
4393 | A C-g typed while in this function is treated like any other character,\n\ |
4394 | and `quit-flag' is not set.\n\ | |
4395 | \n\ | |
4396 | If the key sequence starts with a mouse click, then the sequence is read\n\ | |
4397 | using the keymaps of the buffer of the window clicked in, not the buffer\n\ | |
4398 | of the selected window as normal.\n\ | |
4399 | \n\ | |
4400 | `read-key-sequence' drops unbound button-down events, since you normally\n\ | |
4401 | only care about the click or drag events which follow them. If a drag\n\ | |
fbcd35bd JB |
4402 | or multi-click event is unbound, but the corresponding click event would\n\ |
4403 | be bound, `read-key-sequence' turns the event into a click event at the\n\ | |
cb5df6ae | 4404 | drag's starting position. This means that you don't have to distinguish\n\ |
fbcd35bd | 4405 | between click and drag, double, or triple events unless you want to.\n\ |
cb5df6ae JB |
4406 | \n\ |
4407 | `read-key-sequence' prefixes mouse events on mode lines, the vertical\n\ | |
3c370943 JB |
4408 | lines separating windows, and scroll bars with imaginary keys\n\ |
4409 | `mode-line', `vertical-line', and `vertical-scroll-bar'.\n\ | |
cb5df6ae JB |
4410 | \n\ |
4411 | If the user switches frames in the middle of a key sequence, the\n\ | |
4412 | frame-switch event is put off until after the current key sequence.\n\ | |
4413 | \n\ | |
4414 | `read-key-sequence' checks `function-key-map' for function key\n\ | |
4415 | sequences, where they wouldn't conflict with ordinary bindings. See\n\ | |
4bb994d1 | 4416 | `function-key-map' for more details.") |
a612e298 RS |
4417 | (prompt, continue_echo) |
4418 | #endif | |
4419 | ||
4420 | DEFUN ("read-key-sequence", Fread_key_sequence, Sread_key_sequence, 1, 2, 0, | |
4421 | 0) | |
c0a58692 RS |
4422 | (prompt, continue_echo) |
4423 | Lisp_Object prompt, continue_echo; | |
284f4730 JB |
4424 | { |
4425 | Lisp_Object keybuf[30]; | |
4426 | register int i; | |
4427 | struct gcpro gcpro1, gcpro2; | |
4428 | ||
4429 | if (!NILP (prompt)) | |
4430 | CHECK_STRING (prompt, 0); | |
4431 | QUIT; | |
4432 | ||
4433 | bzero (keybuf, sizeof keybuf); | |
4434 | GCPRO1 (keybuf[0]); | |
4435 | gcpro1.nvars = (sizeof keybuf/sizeof (keybuf[0])); | |
4436 | ||
daa37602 | 4437 | if (NILP (continue_echo)) |
c0a58692 RS |
4438 | this_command_key_count = 0; |
4439 | ||
284f4730 | 4440 | i = read_key_sequence (keybuf, (sizeof keybuf/sizeof (keybuf[0])), |
f4255cd1 | 4441 | NILP (prompt) ? 0 : XSTRING (prompt)->data); |
284f4730 | 4442 | |
dcc408a0 RS |
4443 | if (i == -1) |
4444 | { | |
4445 | Vquit_flag = Qt; | |
4446 | QUIT; | |
4447 | } | |
284f4730 | 4448 | UNGCPRO; |
86e5706b | 4449 | return make_event_array (i, keybuf); |
284f4730 JB |
4450 | } |
4451 | \f | |
4452 | DEFUN ("command-execute", Fcommand_execute, Scommand_execute, 1, 2, 0, | |
4453 | "Execute CMD as an editor command.\n\ | |
4454 | CMD must be a symbol that satisfies the `commandp' predicate.\n\ | |
4455 | Optional second arg RECORD-FLAG non-nil\n\ | |
4456 | means unconditionally put this command in `command-history'.\n\ | |
4457 | Otherwise, that is done only if an arg is read using the minibuffer.") | |
4458 | (cmd, record) | |
4459 | Lisp_Object cmd, record; | |
4460 | { | |
4461 | register Lisp_Object final; | |
4462 | register Lisp_Object tem; | |
4463 | Lisp_Object prefixarg; | |
4464 | struct backtrace backtrace; | |
4465 | extern int debug_on_next_call; | |
4466 | ||
4467 | prefixarg = Vprefix_arg, Vprefix_arg = Qnil; | |
4468 | Vcurrent_prefix_arg = prefixarg; | |
4469 | debug_on_next_call = 0; | |
4470 | ||
4471 | if (XTYPE (cmd) == Lisp_Symbol) | |
4472 | { | |
4473 | tem = Fget (cmd, Qdisabled); | |
4474 | if (!NILP (tem)) | |
2e894dab | 4475 | return call1 (Vrun_hooks, Qdisabled_command_hook); |
284f4730 JB |
4476 | } |
4477 | ||
4478 | while (1) | |
4479 | { | |
ffd56f97 | 4480 | final = Findirect_function (cmd); |
284f4730 JB |
4481 | |
4482 | if (CONSP (final) && (tem = Fcar (final), EQ (tem, Qautoload))) | |
4483 | do_autoload (final, cmd); | |
4484 | else | |
4485 | break; | |
4486 | } | |
4487 | ||
4488 | if (XTYPE (final) == Lisp_String | |
4489 | || XTYPE (final) == Lisp_Vector) | |
4490 | { | |
4491 | /* If requested, place the macro in the command history. For | |
4492 | other sorts of commands, call-interactively takes care of | |
4493 | this. */ | |
4494 | if (!NILP (record)) | |
4495 | Vcommand_history | |
4496 | = Fcons (Fcons (Qexecute_kbd_macro, | |
4497 | Fcons (final, Fcons (prefixarg, Qnil))), | |
4498 | Vcommand_history); | |
4499 | ||
4500 | return Fexecute_kbd_macro (final, prefixarg); | |
4501 | } | |
4502 | if (CONSP (final) || XTYPE (final) == Lisp_Subr | |
4503 | || XTYPE (final) == Lisp_Compiled) | |
4504 | { | |
4505 | backtrace.next = backtrace_list; | |
4506 | backtrace_list = &backtrace; | |
4507 | backtrace.function = &Qcall_interactively; | |
4508 | backtrace.args = &cmd; | |
4509 | backtrace.nargs = 1; | |
4510 | backtrace.evalargs = 0; | |
4511 | ||
4512 | tem = Fcall_interactively (cmd, record); | |
4513 | ||
4514 | backtrace_list = backtrace.next; | |
4515 | return tem; | |
4516 | } | |
4517 | return Qnil; | |
4518 | } | |
4519 | \f | |
284f4730 JB |
4520 | DEFUN ("execute-extended-command", Fexecute_extended_command, Sexecute_extended_command, |
4521 | 1, 1, "P", | |
4522 | "Read function name, then read its arguments and call it.") | |
4523 | (prefixarg) | |
4524 | Lisp_Object prefixarg; | |
4525 | { | |
4526 | Lisp_Object function; | |
4527 | char buf[40]; | |
4528 | Lisp_Object saved_keys; | |
4529 | struct gcpro gcpro1; | |
4530 | ||
4531 | saved_keys = Fthis_command_keys (); | |
4532 | buf[0] = 0; | |
4533 | GCPRO1 (saved_keys); | |
4534 | ||
4535 | if (EQ (prefixarg, Qminus)) | |
4536 | strcpy (buf, "- "); | |
4537 | else if (CONSP (prefixarg) && XINT (XCONS (prefixarg)->car) == 4) | |
4538 | strcpy (buf, "C-u "); | |
4539 | else if (CONSP (prefixarg) && XTYPE (XCONS (prefixarg)->car) == Lisp_Int) | |
4540 | sprintf (buf, "%d ", XINT (XCONS (prefixarg)->car)); | |
4541 | else if (XTYPE (prefixarg) == Lisp_Int) | |
4542 | sprintf (buf, "%d ", XINT (prefixarg)); | |
4543 | ||
4544 | /* This isn't strictly correct if execute-extended-command | |
4545 | is bound to anything else. Perhaps it should use | |
4546 | this_command_keys? */ | |
4547 | strcat (buf, "M-x "); | |
4548 | ||
4549 | /* Prompt with buf, and then read a string, completing from and | |
4550 | restricting to the set of all defined commands. Don't provide | |
4551 | any initial input. The last Qnil says not to perform a | |
4552 | peculiar hack on the initial input. */ | |
4553 | function = Fcompleting_read (build_string (buf), | |
4554 | Vobarray, Qcommandp, | |
4555 | Qt, Qnil, Qnil); | |
4556 | ||
1113d9db JB |
4557 | /* Set this_command_keys to the concatenation of saved_keys and |
4558 | function, followed by a RET. */ | |
284f4730 | 4559 | { |
1113d9db | 4560 | struct Lisp_String *str; |
284f4730 JB |
4561 | int i; |
4562 | Lisp_Object tem; | |
4563 | ||
1113d9db JB |
4564 | this_command_key_count = 0; |
4565 | ||
4566 | str = XSTRING (saved_keys); | |
4567 | for (i = 0; i < str->size; i++) | |
284f4730 | 4568 | { |
1113d9db | 4569 | XFASTINT (tem) = str->data[i]; |
284f4730 JB |
4570 | add_command_key (tem); |
4571 | } | |
1113d9db JB |
4572 | |
4573 | str = XSTRING (function); | |
4574 | for (i = 0; i < str->size; i++) | |
4575 | { | |
4576 | XFASTINT (tem) = str->data[i]; | |
4577 | add_command_key (tem); | |
4578 | } | |
4579 | ||
4580 | XFASTINT (tem) = '\015'; | |
4581 | add_command_key (tem); | |
284f4730 JB |
4582 | } |
4583 | ||
4584 | UNGCPRO; | |
4585 | ||
0a7f1fc0 | 4586 | function = Fintern (function, Qnil); |
284f4730 JB |
4587 | Vprefix_arg = prefixarg; |
4588 | this_command = function; | |
4589 | ||
4590 | return Fcommand_execute (function, Qt); | |
4591 | } | |
4592 | \f | |
4593 | ||
4594 | detect_input_pending () | |
4595 | { | |
4596 | if (!input_pending) | |
4597 | get_input_pending (&input_pending); | |
4598 | ||
4599 | return input_pending; | |
4600 | } | |
4601 | ||
ffd56f97 JB |
4602 | /* This is called in some cases before a possible quit. |
4603 | It cases the next call to detect_input_pending to recompute input_pending. | |
4604 | So calling this function unnecessarily can't do any harm. */ | |
4605 | clear_input_pending () | |
4606 | { | |
4607 | input_pending = 0; | |
4608 | } | |
4609 | ||
284f4730 JB |
4610 | DEFUN ("input-pending-p", Finput_pending_p, Sinput_pending_p, 0, 0, 0, |
4611 | "T if command input is currently available with no waiting.\n\ | |
4612 | Actually, the value is nil only if we can be sure that no input is available.") | |
4613 | () | |
4614 | { | |
86e5706b | 4615 | if (!NILP (unread_command_events) || unread_command_char != -1) |
284f4730 JB |
4616 | return (Qt); |
4617 | ||
4618 | return detect_input_pending () ? Qt : Qnil; | |
4619 | } | |
4620 | ||
4621 | DEFUN ("recent-keys", Frecent_keys, Srecent_keys, 0, 0, 0, | |
22d7cb89 | 4622 | "Return vector of last 100 events, not counting those from keyboard macros.") |
284f4730 JB |
4623 | () |
4624 | { | |
5160df46 | 4625 | Lisp_Object *keys = XVECTOR (recent_keys)->contents; |
284f4730 JB |
4626 | Lisp_Object val; |
4627 | ||
4628 | if (total_keys < NUM_RECENT_KEYS) | |
5160df46 | 4629 | return Fvector (total_keys, keys); |
284f4730 JB |
4630 | else |
4631 | { | |
5160df46 JB |
4632 | val = Fvector (NUM_RECENT_KEYS, keys); |
4633 | bcopy (keys + recent_keys_index, | |
284f4730 JB |
4634 | XVECTOR (val)->contents, |
4635 | (NUM_RECENT_KEYS - recent_keys_index) * sizeof (Lisp_Object)); | |
5160df46 | 4636 | bcopy (keys, |
284f4730 JB |
4637 | XVECTOR (val)->contents + NUM_RECENT_KEYS - recent_keys_index, |
4638 | recent_keys_index * sizeof (Lisp_Object)); | |
4639 | return val; | |
4640 | } | |
4641 | } | |
4642 | ||
4643 | DEFUN ("this-command-keys", Fthis_command_keys, Sthis_command_keys, 0, 0, 0, | |
e5f920d7 RS |
4644 | "Return the key sequence that invoked this command.\n\ |
4645 | The value is a string or a vector.") | |
284f4730 JB |
4646 | () |
4647 | { | |
86e5706b RS |
4648 | return make_event_array (this_command_key_count, |
4649 | XVECTOR (this_command_keys)->contents); | |
284f4730 JB |
4650 | } |
4651 | ||
4652 | DEFUN ("recursion-depth", Frecursion_depth, Srecursion_depth, 0, 0, 0, | |
4653 | "Return the current depth in recursive edits.") | |
4654 | () | |
4655 | { | |
4656 | Lisp_Object temp; | |
4657 | XFASTINT (temp) = command_loop_level + minibuf_level; | |
4658 | return temp; | |
4659 | } | |
4660 | ||
4661 | DEFUN ("open-dribble-file", Fopen_dribble_file, Sopen_dribble_file, 1, 1, | |
4662 | "FOpen dribble file: ", | |
9b2471df RS |
4663 | "Start writing all keyboard characters to a dribble file called FILE.\n\ |
4664 | If FILE is nil, close any open dribble file.") | |
284f4730 JB |
4665 | (file) |
4666 | Lisp_Object file; | |
4667 | { | |
4668 | if (NILP (file)) | |
4669 | { | |
4670 | fclose (dribble); | |
4671 | dribble = 0; | |
4672 | } | |
4673 | else | |
4674 | { | |
4675 | file = Fexpand_file_name (file, Qnil); | |
4676 | dribble = fopen (XSTRING (file)->data, "w"); | |
4677 | } | |
4678 | return Qnil; | |
4679 | } | |
4680 | ||
4681 | DEFUN ("discard-input", Fdiscard_input, Sdiscard_input, 0, 0, 0, | |
4682 | "Discard the contents of the terminal input buffer.\n\ | |
4683 | Also cancel any kbd macro being defined.") | |
4684 | () | |
4685 | { | |
4686 | defining_kbd_macro = 0; | |
4687 | update_mode_lines++; | |
4688 | ||
dbc4e1c1 | 4689 | unread_command_events = Qnil; |
86e5706b | 4690 | unread_command_char = -1; |
284f4730 JB |
4691 | |
4692 | discard_tty_input (); | |
4693 | ||
ff0b5f4c JB |
4694 | /* Without the cast, GCC complains that this assignment loses the |
4695 | volatile qualifier of kbd_store_ptr. Is there anything wrong | |
4696 | with that? */ | |
4697 | kbd_fetch_ptr = (struct input_event *) kbd_store_ptr; | |
7b4aedb9 | 4698 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
284f4730 JB |
4699 | input_pending = 0; |
4700 | ||
4701 | return Qnil; | |
4702 | } | |
4703 | \f | |
4704 | DEFUN ("suspend-emacs", Fsuspend_emacs, Ssuspend_emacs, 0, 1, "", | |
4705 | "Stop Emacs and return to superior process. You can resume later.\n\ | |
4706 | On systems that don't have job control, run a subshell instead.\n\n\ | |
4707 | If optional arg STUFFSTRING is non-nil, its characters are stuffed\n\ | |
b7d2ebbf RS |
4708 | to be read as terminal input by Emacs's parent, after suspension.\n\ |
4709 | \n\ | |
7df30614 | 4710 | Before suspending, call the functions in `suspend-hook' with no args.\n\ |
b7d2ebbf RS |
4711 | If any of them returns nil, don't call the rest and don't suspend.\n\ |
4712 | Otherwise, suspend normally and after resumption run the normal hook\n\ | |
284f4730 JB |
4713 | `suspend-resume-hook' if that is bound and non-nil.\n\ |
4714 | \n\ | |
4715 | Some operating systems cannot stop the Emacs process and resume it later.\n\ | |
b7d2ebbf | 4716 | On such systems, Emacs starts a subshell instead of suspending.") |
284f4730 JB |
4717 | (stuffstring) |
4718 | Lisp_Object stuffstring; | |
4719 | { | |
3a69360c | 4720 | Lisp_Object tem; |
284f4730 JB |
4721 | int count = specpdl_ptr - specpdl; |
4722 | int old_height, old_width; | |
4723 | int width, height; | |
b7d2ebbf | 4724 | struct gcpro gcpro1, gcpro2; |
284f4730 JB |
4725 | extern init_sys_modes (); |
4726 | ||
4727 | if (!NILP (stuffstring)) | |
4728 | CHECK_STRING (stuffstring, 0); | |
284f4730 | 4729 | |
1e95ed28 JB |
4730 | /* Run the functions in suspend-hook. */ |
4731 | if (!NILP (Vrun_hooks)) | |
4732 | call1 (Vrun_hooks, intern ("suspend-hook")); | |
284f4730 | 4733 | |
b7d2ebbf | 4734 | GCPRO1 (stuffstring); |
ff11dfa1 | 4735 | get_frame_size (&old_width, &old_height); |
284f4730 JB |
4736 | reset_sys_modes (); |
4737 | /* sys_suspend can get an error if it tries to fork a subshell | |
4738 | and the system resources aren't available for that. */ | |
4739 | record_unwind_protect (init_sys_modes, 0); | |
4740 | stuff_buffered_input (stuffstring); | |
4741 | sys_suspend (); | |
4742 | unbind_to (count, Qnil); | |
4743 | ||
4744 | /* Check if terminal/window size has changed. | |
4745 | Note that this is not useful when we are running directly | |
4746 | with a window system; but suspend should be disabled in that case. */ | |
ff11dfa1 | 4747 | get_frame_size (&width, &height); |
284f4730 | 4748 | if (width != old_width || height != old_height) |
f5ea6163 | 4749 | change_frame_size (selected_frame, height, width, 0, 0); |
284f4730 | 4750 | |
1e95ed28 | 4751 | /* Run suspend-resume-hook. */ |
284f4730 JB |
4752 | if (!NILP (Vrun_hooks)) |
4753 | call1 (Vrun_hooks, intern ("suspend-resume-hook")); | |
4754 | ||
4755 | UNGCPRO; | |
4756 | return Qnil; | |
4757 | } | |
4758 | ||
4759 | /* If STUFFSTRING is a string, stuff its contents as pending terminal input. | |
eb8c3be9 | 4760 | Then in any case stuff anything Emacs has read ahead and not used. */ |
284f4730 JB |
4761 | |
4762 | stuff_buffered_input (stuffstring) | |
4763 | Lisp_Object stuffstring; | |
4764 | { | |
4765 | register unsigned char *p; | |
4766 | ||
4767 | /* stuff_char works only in BSD, versions 4.2 and up. */ | |
4768 | #ifdef BSD | |
4769 | #ifndef BSD4_1 | |
4770 | if (XTYPE (stuffstring) == Lisp_String) | |
4771 | { | |
4772 | register int count; | |
4773 | ||
4774 | p = XSTRING (stuffstring)->data; | |
4775 | count = XSTRING (stuffstring)->size; | |
4776 | while (count-- > 0) | |
4777 | stuff_char (*p++); | |
4778 | stuff_char ('\n'); | |
4779 | } | |
4780 | /* Anything we have read ahead, put back for the shell to read. */ | |
4781 | while (kbd_fetch_ptr != kbd_store_ptr) | |
4782 | { | |
4783 | if (kbd_fetch_ptr == kbd_buffer + KBD_BUFFER_SIZE) | |
4784 | kbd_fetch_ptr = kbd_buffer; | |
4785 | if (kbd_fetch_ptr->kind == ascii_keystroke) | |
4786 | stuff_char (XINT (kbd_fetch_ptr->code)); | |
4bb994d1 | 4787 | kbd_fetch_ptr->kind = no_event; |
7b4aedb9 JB |
4788 | (XVECTOR (kbd_buffer_frame_or_window)->contents[kbd_fetch_ptr |
4789 | - kbd_buffer] | |
4790 | = Qnil); | |
284f4730 JB |
4791 | kbd_fetch_ptr++; |
4792 | } | |
4793 | input_pending = 0; | |
4794 | #endif | |
4795 | #endif /* BSD and not BSD4_1 */ | |
4796 | } | |
4797 | \f | |
ffd56f97 JB |
4798 | set_waiting_for_input (time_to_clear) |
4799 | EMACS_TIME *time_to_clear; | |
284f4730 | 4800 | { |
ffd56f97 | 4801 | input_available_clear_time = time_to_clear; |
284f4730 JB |
4802 | |
4803 | /* Tell interrupt_signal to throw back to read_char, */ | |
4804 | waiting_for_input = 1; | |
4805 | ||
4806 | /* If interrupt_signal was called before and buffered a C-g, | |
4807 | make it run again now, to avoid timing error. */ | |
4808 | if (!NILP (Vquit_flag)) | |
4809 | quit_throw_to_read_char (); | |
4810 | ||
4811 | /* If alarm has gone off already, echo now. */ | |
4812 | if (echo_flag) | |
4813 | { | |
4814 | echo (); | |
4815 | echo_flag = 0; | |
4816 | } | |
4817 | } | |
4818 | ||
4819 | clear_waiting_for_input () | |
4820 | { | |
4821 | /* Tell interrupt_signal not to throw back to read_char, */ | |
4822 | waiting_for_input = 0; | |
ffd56f97 | 4823 | input_available_clear_time = 0; |
284f4730 JB |
4824 | } |
4825 | ||
4826 | /* This routine is called at interrupt level in response to C-G. | |
4827 | If interrupt_input, this is the handler for SIGINT. | |
4828 | Otherwise, it is called from kbd_buffer_store_event, | |
4829 | in handling SIGIO or SIGTINT. | |
4830 | ||
4831 | If `waiting_for_input' is non zero, then unless `echoing' is nonzero, | |
4832 | immediately throw back to read_char. | |
4833 | ||
4834 | Otherwise it sets the Lisp variable quit-flag not-nil. | |
4835 | This causes eval to throw, when it gets a chance. | |
4836 | If quit-flag is already non-nil, it stops the job right away. */ | |
4837 | ||
4838 | SIGTYPE | |
4839 | interrupt_signal () | |
4840 | { | |
4841 | char c; | |
4842 | /* Must preserve main program's value of errno. */ | |
4843 | int old_errno = errno; | |
284f4730 JB |
4844 | |
4845 | #ifdef USG | |
4846 | /* USG systems forget handlers when they are used; | |
4847 | must reestablish each time */ | |
4848 | signal (SIGINT, interrupt_signal); | |
4849 | signal (SIGQUIT, interrupt_signal); | |
4850 | #endif /* USG */ | |
4851 | ||
4852 | cancel_echoing (); | |
4853 | ||
d5045cf9 | 4854 | if (!NILP (Vquit_flag) && FRAME_TERMCAP_P (selected_frame)) |
284f4730 JB |
4855 | { |
4856 | fflush (stdout); | |
4857 | reset_sys_modes (); | |
4858 | sigfree (); | |
4859 | #ifdef SIGTSTP /* Support possible in later USG versions */ | |
4860 | /* | |
4861 | * On systems which can suspend the current process and return to the original | |
4862 | * shell, this command causes the user to end up back at the shell. | |
4863 | * The "Auto-save" and "Abort" questions are not asked until | |
4864 | * the user elects to return to emacs, at which point he can save the current | |
4865 | * job and either dump core or continue. | |
4866 | */ | |
4867 | sys_suspend (); | |
4868 | #else | |
4869 | #ifdef VMS | |
4870 | if (sys_suspend () == -1) | |
4871 | { | |
4872 | printf ("Not running as a subprocess;\n"); | |
4873 | printf ("you can continue or abort.\n"); | |
4874 | } | |
4875 | #else /* not VMS */ | |
4876 | /* Perhaps should really fork an inferior shell? | |
4877 | But that would not provide any way to get back | |
4878 | to the original shell, ever. */ | |
4879 | printf ("No support for stopping a process on this operating system;\n"); | |
4880 | printf ("you can continue or abort.\n"); | |
4881 | #endif /* not VMS */ | |
4882 | #endif /* not SIGTSTP */ | |
4883 | printf ("Auto-save? (y or n) "); | |
4884 | fflush (stdout); | |
4885 | if (((c = getchar ()) & ~040) == 'Y') | |
9fd7d808 RS |
4886 | { |
4887 | Fdo_auto_save (Qt, Qnil); | |
4888 | printf ("Auto-save done\n"); | |
4889 | } | |
284f4730 JB |
4890 | while (c != '\n') c = getchar (); |
4891 | #ifdef VMS | |
4892 | printf ("Abort (and enter debugger)? (y or n) "); | |
4893 | #else /* not VMS */ | |
4894 | printf ("Abort (and dump core)? (y or n) "); | |
4895 | #endif /* not VMS */ | |
4896 | fflush (stdout); | |
4897 | if (((c = getchar ()) & ~040) == 'Y') | |
4898 | abort (); | |
4899 | while (c != '\n') c = getchar (); | |
4900 | printf ("Continuing...\n"); | |
4901 | fflush (stdout); | |
4902 | init_sys_modes (); | |
4903 | } | |
4904 | else | |
4905 | { | |
4906 | /* If executing a function that wants to be interrupted out of | |
4907 | and the user has not deferred quitting by binding `inhibit-quit' | |
4908 | then quit right away. */ | |
4909 | if (immediate_quit && NILP (Vinhibit_quit)) | |
4910 | { | |
4911 | immediate_quit = 0; | |
4912 | sigfree (); | |
4913 | Fsignal (Qquit, Qnil); | |
4914 | } | |
4915 | else | |
4916 | /* Else request quit when it's safe */ | |
4917 | Vquit_flag = Qt; | |
4918 | } | |
4919 | ||
4920 | if (waiting_for_input && !echoing) | |
4921 | quit_throw_to_read_char (); | |
4922 | ||
4923 | errno = old_errno; | |
4924 | } | |
4925 | ||
4926 | /* Handle a C-g by making read_char return C-g. */ | |
4927 | ||
4928 | quit_throw_to_read_char () | |
4929 | { | |
4930 | quit_error_check (); | |
4931 | sigfree (); | |
4932 | /* Prevent another signal from doing this before we finish. */ | |
f76475ad | 4933 | clear_waiting_for_input (); |
284f4730 JB |
4934 | input_pending = 0; |
4935 | ||
dbc4e1c1 | 4936 | unread_command_events = Qnil; |
86e5706b | 4937 | unread_command_char = -1; |
284f4730 | 4938 | |
e6b01c14 JB |
4939 | #ifdef POLL_FOR_INPUT |
4940 | /* May be > 1 if in recursive minibuffer. */ | |
4941 | if (poll_suppress_count == 0) | |
4942 | abort (); | |
4943 | #endif | |
4944 | ||
284f4730 JB |
4945 | _longjmp (getcjmp, 1); |
4946 | } | |
4947 | \f | |
4948 | DEFUN ("set-input-mode", Fset_input_mode, Sset_input_mode, 3, 4, 0, | |
4949 | "Set mode of reading keyboard input.\n\ | |
464f8898 RS |
4950 | First arg INTERRUPT non-nil means use input interrupts;\n\ |
4951 | nil means use CBREAK mode.\n\ | |
4952 | Second arg FLOW non-nil means use ^S/^Q flow control for output to terminal\n\ | |
284f4730 | 4953 | (no effect except in CBREAK mode).\n\ |
b04904fb RS |
4954 | Third arg META t means accept 8-bit input (for a Meta key).\n\ |
4955 | META nil means ignore the top bit, on the assumption it is parity.\n\ | |
4956 | Otherwise, accept 8-bit input and don't use the top bit for Meta.\n\ | |
a8ee7ef9 RS |
4957 | Optional fourth arg QUIT if non-nil specifies character to use for quitting.\n\ |
4958 | See also `current-input-mode'.") | |
284f4730 JB |
4959 | (interrupt, flow, meta, quit) |
4960 | Lisp_Object interrupt, flow, meta, quit; | |
4961 | { | |
4962 | if (!NILP (quit) | |
4963 | && (XTYPE (quit) != Lisp_Int | |
4964 | || XINT (quit) < 0 || XINT (quit) > 0400)) | |
34f04431 RS |
4965 | error ("set-input-mode: QUIT must be an ASCII character"); |
4966 | ||
4967 | #ifdef POLL_FOR_INPUT | |
4968 | stop_polling (); | |
4969 | #endif | |
284f4730 JB |
4970 | |
4971 | reset_sys_modes (); | |
4972 | #ifdef SIGIO | |
4973 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
4974 | #ifdef NO_SOCK_SIGIO | |
4975 | if (read_socket_hook) | |
4976 | interrupt_input = 0; /* No interrupts if reading from a socket. */ | |
4977 | else | |
4978 | #endif /* NO_SOCK_SIGIO */ | |
4979 | interrupt_input = !NILP (interrupt); | |
4980 | #else /* not SIGIO */ | |
4981 | interrupt_input = 0; | |
4982 | #endif /* not SIGIO */ | |
4983 | /* Our VMS input only works by interrupts, as of now. */ | |
4984 | #ifdef VMS | |
4985 | interrupt_input = 1; | |
4986 | #endif | |
4987 | flow_control = !NILP (flow); | |
b04904fb RS |
4988 | if (NILP (meta)) |
4989 | meta_key = 0; | |
4990 | else if (EQ (meta, Qt)) | |
4991 | meta_key = 1; | |
4992 | else | |
4993 | meta_key = 2; | |
284f4730 JB |
4994 | if (!NILP (quit)) |
4995 | /* Don't let this value be out of range. */ | |
4996 | quit_char = XINT (quit) & (meta_key ? 0377 : 0177); | |
4997 | ||
4998 | init_sys_modes (); | |
34f04431 RS |
4999 | |
5000 | #ifdef POLL_FOR_INPUT | |
5001 | poll_suppress_count = 1; | |
5002 | start_polling (); | |
5003 | #endif | |
284f4730 JB |
5004 | return Qnil; |
5005 | } | |
80645119 JB |
5006 | |
5007 | DEFUN ("current-input-mode", Fcurrent_input_mode, Scurrent_input_mode, 0, 0, 0, | |
5008 | "Return information about the way Emacs currently reads keyboard input.\n\ | |
5009 | The value is a list of the form (INTERRUPT FLOW META QUIT), where\n\ | |
5010 | INTERRUPT is non-nil if Emacs is using interrupt-driven input; if\n\ | |
5011 | nil, Emacs is using CBREAK mode.\n\ | |
5012 | FLOW is non-nil if Emacs uses ^S/^Q flow control for output to the\n\ | |
5013 | terminal; this does not apply if Emacs uses interrupt-driven input.\n\ | |
a8ee7ef9 RS |
5014 | META is t if accepting 8-bit input with 8th bit as Meta flag.\n\ |
5015 | META nil means ignoring the top bit, on the assumption it is parity.\n\ | |
5016 | META is neither t nor nil if accepting 8-bit input and using\n\ | |
5017 | all 8 bits as the character code.\n\ | |
80645119 JB |
5018 | QUIT is the character Emacs currently uses to quit.\n\ |
5019 | The elements of this list correspond to the arguments of\n\ | |
a8ee7ef9 | 5020 | `set-input-mode'.") |
80645119 JB |
5021 | () |
5022 | { | |
5023 | Lisp_Object val[4]; | |
5024 | ||
5025 | val[0] = interrupt_input ? Qt : Qnil; | |
5026 | val[1] = flow_control ? Qt : Qnil; | |
a8ee7ef9 | 5027 | val[2] = meta_key == 2 ? make_number (0) : meta_key == 1 ? Qt : Qnil; |
7b50ece7 | 5028 | XFASTINT (val[3]) = quit_char; |
80645119 | 5029 | |
bf673a7a | 5030 | return Flist (sizeof (val) / sizeof (val[0]), val); |
80645119 JB |
5031 | } |
5032 | ||
284f4730 JB |
5033 | \f |
5034 | init_keyboard () | |
5035 | { | |
284f4730 JB |
5036 | /* This is correct before outermost invocation of the editor loop */ |
5037 | command_loop_level = -1; | |
5038 | immediate_quit = 0; | |
5039 | quit_char = Ctl ('g'); | |
dbc4e1c1 | 5040 | unread_command_events = Qnil; |
86e5706b | 5041 | unread_command_char = -1; |
284f4730 | 5042 | total_keys = 0; |
9deb415a | 5043 | recent_keys_index = 0; |
284f4730 JB |
5044 | kbd_fetch_ptr = kbd_buffer; |
5045 | kbd_store_ptr = kbd_buffer; | |
5046 | do_mouse_tracking = 0; | |
5047 | input_pending = 0; | |
5048 | ||
07d2b8de | 5049 | #ifdef MULTI_FRAME |
8f805655 JB |
5050 | /* This means that command_loop_1 won't try to select anything the first |
5051 | time through. */ | |
3c370943 JB |
5052 | internal_last_event_frame = Qnil; |
5053 | Vlast_event_frame = internal_last_event_frame; | |
7b4aedb9 JB |
5054 | #endif |
5055 | ||
5056 | /* If we're running a dumped Emacs, we need to clear out | |
5057 | kbd_buffer_frame_or_window, in case some events got into it | |
5058 | before we dumped. | |
4bb994d1 | 5059 | |
7b4aedb9 JB |
5060 | If we're running an undumped Emacs, it hasn't been initialized by |
5061 | syms_of_keyboard yet. */ | |
4bb994d1 | 5062 | if (initialized) |
7b4aedb9 | 5063 | Ffillarray (kbd_buffer_frame_or_window, Qnil); |
07d2b8de | 5064 | |
284f4730 JB |
5065 | if (!noninteractive) |
5066 | { | |
5067 | signal (SIGINT, interrupt_signal); | |
cb5df6ae | 5068 | #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS) |
284f4730 JB |
5069 | /* For systems with SysV TERMIO, C-g is set up for both SIGINT and |
5070 | SIGQUIT and we can't tell which one it will give us. */ | |
5071 | signal (SIGQUIT, interrupt_signal); | |
5072 | #endif /* HAVE_TERMIO */ | |
5073 | /* Note SIGIO has been undef'd if FIONREAD is missing. */ | |
5074 | #ifdef SIGIO | |
5075 | signal (SIGIO, input_available_signal); | |
8ea0a720 | 5076 | #endif /* SIGIO */ |
284f4730 JB |
5077 | } |
5078 | ||
5079 | /* Use interrupt input by default, if it works and noninterrupt input | |
5080 | has deficiencies. */ | |
5081 | ||
5082 | #ifdef INTERRUPT_INPUT | |
5083 | interrupt_input = 1; | |
5084 | #else | |
5085 | interrupt_input = 0; | |
5086 | #endif | |
5087 | ||
5088 | /* Our VMS input only works by interrupts, as of now. */ | |
5089 | #ifdef VMS | |
5090 | interrupt_input = 1; | |
5091 | #endif | |
5092 | ||
5093 | sigfree (); | |
5094 | dribble = 0; | |
5095 | ||
5096 | if (keyboard_init_hook) | |
5097 | (*keyboard_init_hook) (); | |
5098 | ||
5099 | #ifdef POLL_FOR_INPUT | |
5100 | poll_suppress_count = 1; | |
5101 | start_polling (); | |
5102 | #endif | |
5103 | } | |
5104 | ||
5105 | /* This type's only use is in syms_of_keyboard, to initialize the | |
5106 | event header symbols and put properties on them. */ | |
5107 | struct event_head { | |
5108 | Lisp_Object *var; | |
5109 | char *name; | |
5110 | Lisp_Object *kind; | |
5111 | }; | |
5112 | ||
5113 | struct event_head head_table[] = { | |
7b4aedb9 | 5114 | &Qmouse_movement, "mouse-movement", &Qmouse_movement, |
3c370943 | 5115 | &Qscroll_bar_movement, "scroll-bar-movement", &Qmouse_movement, |
7b4aedb9 | 5116 | &Qswitch_frame, "switch-frame", &Qswitch_frame, |
284f4730 JB |
5117 | }; |
5118 | ||
5119 | syms_of_keyboard () | |
5120 | { | |
2e894dab RS |
5121 | Qdisabled_command_hook = intern ("disabled-command-hook"); |
5122 | staticpro (&Qdisabled_command_hook); | |
5123 | ||
284f4730 JB |
5124 | Qself_insert_command = intern ("self-insert-command"); |
5125 | staticpro (&Qself_insert_command); | |
5126 | ||
5127 | Qforward_char = intern ("forward-char"); | |
5128 | staticpro (&Qforward_char); | |
5129 | ||
5130 | Qbackward_char = intern ("backward-char"); | |
5131 | staticpro (&Qbackward_char); | |
5132 | ||
5133 | Qdisabled = intern ("disabled"); | |
5134 | staticpro (&Qdisabled); | |
5135 | ||
e58aa385 RS |
5136 | Qundefined = intern ("undefined"); |
5137 | staticpro (&Qundefined); | |
5138 | ||
86e5706b RS |
5139 | Qpre_command_hook = intern ("pre-command-hook"); |
5140 | staticpro (&Qpre_command_hook); | |
5141 | ||
5142 | Qpost_command_hook = intern ("post-command-hook"); | |
5143 | staticpro (&Qpost_command_hook); | |
5144 | ||
284f4730 JB |
5145 | Qfunction_key = intern ("function-key"); |
5146 | staticpro (&Qfunction_key); | |
13b5e56c | 5147 | Qmouse_click = intern ("mouse-click"); |
284f4730 | 5148 | staticpro (&Qmouse_click); |
284f4730 | 5149 | |
598a9fa7 JB |
5150 | Qmenu_enable = intern ("menu-enable"); |
5151 | staticpro (&Qmenu_enable); | |
5152 | ||
284f4730 JB |
5153 | Qmode_line = intern ("mode-line"); |
5154 | staticpro (&Qmode_line); | |
e5d77022 JB |
5155 | Qvertical_line = intern ("vertical-line"); |
5156 | staticpro (&Qvertical_line); | |
3c370943 JB |
5157 | Qvertical_scroll_bar = intern ("vertical-scroll-bar"); |
5158 | staticpro (&Qvertical_scroll_bar); | |
5ec75a55 RS |
5159 | Qmenu_bar = intern ("menu-bar"); |
5160 | staticpro (&Qmenu_bar); | |
4bb994d1 JB |
5161 | |
5162 | Qabove_handle = intern ("above-handle"); | |
5163 | staticpro (&Qabove_handle); | |
5164 | Qhandle = intern ("handle"); | |
5165 | staticpro (&Qhandle); | |
5166 | Qbelow_handle = intern ("below-handle"); | |
5167 | staticpro (&Qbelow_handle); | |
284f4730 | 5168 | |
cd21b839 | 5169 | Qevent_kind = intern ("event-kind"); |
284f4730 | 5170 | staticpro (&Qevent_kind); |
88cb0656 JB |
5171 | Qevent_symbol_elements = intern ("event-symbol-elements"); |
5172 | staticpro (&Qevent_symbol_elements); | |
0a7f1fc0 JB |
5173 | Qevent_symbol_element_mask = intern ("event-symbol-element-mask"); |
5174 | staticpro (&Qevent_symbol_element_mask); | |
5175 | Qmodifier_cache = intern ("modifier-cache"); | |
5176 | staticpro (&Qmodifier_cache); | |
284f4730 | 5177 | |
48e416d4 RS |
5178 | Qrecompute_lucid_menubar = intern ("recompute-lucid-menubar"); |
5179 | staticpro (&Qrecompute_lucid_menubar); | |
5180 | Qactivate_menubar_hook = intern ("activate-menubar-hook"); | |
5181 | staticpro (&Qactivate_menubar_hook); | |
5182 | ||
284f4730 JB |
5183 | { |
5184 | struct event_head *p; | |
5185 | ||
5186 | for (p = head_table; | |
5187 | p < head_table + (sizeof (head_table) / sizeof (head_table[0])); | |
5188 | p++) | |
5189 | { | |
5190 | *p->var = intern (p->name); | |
5191 | staticpro (p->var); | |
5192 | Fput (*p->var, Qevent_kind, *p->kind); | |
88cb0656 | 5193 | Fput (*p->var, Qevent_symbol_elements, Fcons (*p->var, Qnil)); |
284f4730 JB |
5194 | } |
5195 | } | |
5196 | ||
7b4aedb9 JB |
5197 | button_down_location = Fmake_vector (make_number (NUM_MOUSE_BUTTONS), Qnil); |
5198 | staticpro (&button_down_location); | |
88cb0656 JB |
5199 | |
5200 | { | |
5201 | int i; | |
5202 | int len = sizeof (modifier_names) / sizeof (modifier_names[0]); | |
5203 | ||
5204 | modifier_symbols = Fmake_vector (make_number (len), Qnil); | |
5205 | for (i = 0; i < len; i++) | |
86e5706b RS |
5206 | if (modifier_names[i]) |
5207 | XVECTOR (modifier_symbols)->contents[i] = intern (modifier_names[i]); | |
88cb0656 JB |
5208 | staticpro (&modifier_symbols); |
5209 | } | |
5210 | ||
9deb415a JB |
5211 | recent_keys = Fmake_vector (make_number (NUM_RECENT_KEYS), Qnil); |
5212 | staticpro (&recent_keys); | |
5213 | ||
6569cc8d | 5214 | this_command_keys = Fmake_vector (make_number (40), Qnil); |
715d9345 | 5215 | staticpro (&this_command_keys); |
6569cc8d | 5216 | |
7b4aedb9 JB |
5217 | kbd_buffer_frame_or_window |
5218 | = Fmake_vector (make_number (KBD_BUFFER_SIZE), Qnil); | |
5219 | staticpro (&kbd_buffer_frame_or_window); | |
4bb994d1 | 5220 | |
284f4730 JB |
5221 | func_key_syms = Qnil; |
5222 | staticpro (&func_key_syms); | |
5223 | ||
5224 | mouse_syms = Qnil; | |
5225 | staticpro (&mouse_syms); | |
5226 | ||
cd21b839 JB |
5227 | unread_switch_frame = Qnil; |
5228 | staticpro (&unread_switch_frame); | |
5229 | ||
284f4730 JB |
5230 | defsubr (&Sread_key_sequence); |
5231 | defsubr (&Srecursive_edit); | |
5232 | defsubr (&Strack_mouse); | |
284f4730 JB |
5233 | defsubr (&Sinput_pending_p); |
5234 | defsubr (&Scommand_execute); | |
5235 | defsubr (&Srecent_keys); | |
5236 | defsubr (&Sthis_command_keys); | |
5237 | defsubr (&Ssuspend_emacs); | |
5238 | defsubr (&Sabort_recursive_edit); | |
5239 | defsubr (&Sexit_recursive_edit); | |
5240 | defsubr (&Srecursion_depth); | |
5241 | defsubr (&Stop_level); | |
5242 | defsubr (&Sdiscard_input); | |
5243 | defsubr (&Sopen_dribble_file); | |
5244 | defsubr (&Sset_input_mode); | |
80645119 | 5245 | defsubr (&Scurrent_input_mode); |
284f4730 JB |
5246 | defsubr (&Sexecute_extended_command); |
5247 | ||
284f4730 | 5248 | DEFVAR_LISP ("last-command-char", &last_command_char, |
86e5706b RS |
5249 | "Last input event that was part of a command."); |
5250 | ||
5251 | DEFVAR_LISP ("last-command-event", &last_command_char, | |
5252 | "Last input event that was part of a command."); | |
284f4730 | 5253 | |
7d6de002 | 5254 | DEFVAR_LISP ("last-nonmenu-event", &last_nonmenu_event, |
86e5706b | 5255 | "Last input event in a command, except for mouse menu events.\n\ |
7d6de002 RS |
5256 | Mouse menus give back keys that don't look like mouse events;\n\ |
5257 | this variable holds the actual mouse event that led to the menu,\n\ | |
5258 | so that you can determine whether the command was run by mouse or not."); | |
5259 | ||
284f4730 | 5260 | DEFVAR_LISP ("last-input-char", &last_input_char, |
86e5706b RS |
5261 | "Last input event."); |
5262 | ||
5263 | DEFVAR_LISP ("last-input-event", &last_input_char, | |
5264 | "Last input event."); | |
284f4730 | 5265 | |
dbc4e1c1 | 5266 | DEFVAR_LISP ("unread-command-events", &unread_command_events, |
1c07d0a6 | 5267 | "List of objects to be read as next command input events."); |
284f4730 | 5268 | |
86e5706b RS |
5269 | DEFVAR_INT ("unread-command-char", &unread_command_char, |
5270 | "If not -1, an object to be read as next command input event."); | |
5271 | ||
284f4730 JB |
5272 | DEFVAR_LISP ("meta-prefix-char", &meta_prefix_char, |
5273 | "Meta-prefix character code. Meta-foo as command input\n\ | |
5274 | turns into this character followed by foo."); | |
5275 | XSET (meta_prefix_char, Lisp_Int, 033); | |
5276 | ||
5277 | DEFVAR_LISP ("last-command", &last_command, | |
5278 | "The last command executed. Normally a symbol with a function definition,\n\ | |
5279 | but can be whatever was found in the keymap, or whatever the variable\n\ | |
5280 | `this-command' was set to by that command."); | |
5281 | last_command = Qnil; | |
5282 | ||
5283 | DEFVAR_LISP ("this-command", &this_command, | |
5284 | "The command now being executed.\n\ | |
5285 | The command can set this variable; whatever is put here\n\ | |
5286 | will be in `last-command' during the following command."); | |
5287 | this_command = Qnil; | |
5288 | ||
5289 | DEFVAR_INT ("auto-save-interval", &auto_save_interval, | |
5290 | "*Number of keyboard input characters between auto-saves.\n\ | |
5291 | Zero means disable autosaving due to number of characters typed."); | |
5292 | auto_save_interval = 300; | |
5293 | ||
5294 | DEFVAR_LISP ("auto-save-timeout", &Vauto_save_timeout, | |
5295 | "*Number of seconds idle time before auto-save.\n\ | |
06ef7355 RS |
5296 | Zero or nil means disable auto-saving due to idleness.\n\ |
5297 | After auto-saving due to this many seconds of idle time,\n\ | |
84447c71 | 5298 | Emacs also does a garbage collection if that seems to be warranted."); |
284f4730 JB |
5299 | XFASTINT (Vauto_save_timeout) = 30; |
5300 | ||
5301 | DEFVAR_INT ("echo-keystrokes", &echo_keystrokes, | |
5302 | "*Nonzero means echo unfinished commands after this many seconds of pause."); | |
5303 | echo_keystrokes = 1; | |
5304 | ||
5305 | DEFVAR_INT ("polling-period", &polling_period, | |
5306 | "*Interval between polling for input during Lisp execution.\n\ | |
5307 | The reason for polling is to make C-g work to stop a running program.\n\ | |
5308 | Polling is needed only when using X windows and SIGIO does not work.\n\ | |
5309 | Polling is automatically disabled in all other cases."); | |
5310 | polling_period = 2; | |
5311 | ||
564dc952 | 5312 | DEFVAR_LISP ("double-click-time", &Vdouble_click_time, |
fbcd35bd | 5313 | "*Maximum time between mouse clicks to make a double-click.\n\ |
564dc952 JB |
5314 | Measured in milliseconds. nil means disable double-click recognition;\n\ |
5315 | t means double-clicks have no time limit and are detected\n\ | |
fbcd35bd | 5316 | by position only."); |
aab06933 | 5317 | Vdouble_click_time = make_number (500); |
fbcd35bd | 5318 | |
284f4730 JB |
5319 | DEFVAR_INT ("num-input-keys", &num_input_keys, |
5320 | "*Number of complete keys read from the keyboard so far."); | |
5321 | num_input_keys = 0; | |
5322 | ||
07d2b8de | 5323 | #ifdef MULTI_FRAME |
ff11dfa1 | 5324 | DEFVAR_LISP ("last-event-frame", &Vlast_event_frame, |
fce33686 JB |
5325 | "*The frame in which the most recently read event occurred.\n\ |
5326 | If the last event came from a keyboard macro, this is set to `macro'."); | |
ff11dfa1 | 5327 | Vlast_event_frame = Qnil; |
07d2b8de | 5328 | #endif |
284f4730 | 5329 | |
7e85b935 | 5330 | DEFVAR_LISP ("help-char", &Vhelp_char, |
284f4730 JB |
5331 | "Character to recognize as meaning Help.\n\ |
5332 | When it is read, do `(eval help-form)', and display result if it's a string.\n\ | |
5333 | If the value of `help-form' is nil, this char can be read normally."); | |
7e85b935 | 5334 | XSET (Vhelp_char, Lisp_Int, Ctl ('H')); |
284f4730 JB |
5335 | |
5336 | DEFVAR_LISP ("help-form", &Vhelp_form, | |
7e85b935 | 5337 | "Form to execute when character `help-char' is read.\n\ |
284f4730 JB |
5338 | If the form returns a string, that string is displayed.\n\ |
5339 | If `help-form' is nil, the help char is not recognized."); | |
5340 | Vhelp_form = Qnil; | |
5341 | ||
7e85b935 RS |
5342 | DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command, |
5343 | "Command to run when `help-char' character follows a prefix key.\n\ | |
5344 | This command is used only when there is no actual binding\n\ | |
5345 | for that character after that prefix key."); | |
5346 | Vprefix_help_command = Qnil; | |
5347 | ||
284f4730 JB |
5348 | DEFVAR_LISP ("top-level", &Vtop_level, |
5349 | "Form to evaluate when Emacs starts up.\n\ | |
5350 | Useful to set before you dump a modified Emacs."); | |
5351 | Vtop_level = Qnil; | |
5352 | ||
5353 | DEFVAR_LISP ("keyboard-translate-table", &Vkeyboard_translate_table, | |
5354 | "String used as translate table for keyboard input, or nil.\n\ | |
5355 | Each character is looked up in this string and the contents used instead.\n\ | |
5356 | If string is of length N, character codes N and up are untranslated."); | |
5357 | Vkeyboard_translate_table = Qnil; | |
5358 | ||
a612e298 RS |
5359 | DEFVAR_LISP ("key-translation-map", &Vkey_translation_map, |
5360 | "Keymap of key translations that can override keymaps.\n\ | |
5361 | This keymap works like `function-key-map', but comes after that,\n\ | |
5362 | and applies even for keys that have ordinary bindings."); | |
5363 | Vkey_translation_map = Qnil; | |
5364 | ||
284f4730 | 5365 | DEFVAR_BOOL ("menu-prompting", &menu_prompting, |
7d6de002 | 5366 | "Non-nil means prompt with menus when appropriate.\n\ |
284f4730 | 5367 | This is done when reading from a keymap that has a prompt string,\n\ |
7d6de002 RS |
5368 | for elements that have prompt strings.\n\ |
5369 | The menu is displayed on the screen\n\ | |
5370 | if X menus were enabled at configuration\n\ | |
5371 | time and the previous event was a mouse click prefix key.\n\ | |
5372 | Otherwise, menu prompting uses the echo area."); | |
284f4730 JB |
5373 | menu_prompting = 1; |
5374 | ||
5375 | DEFVAR_LISP ("menu-prompt-more-char", &menu_prompt_more_char, | |
5376 | "Character to see next line of menu prompt.\n\ | |
5377 | Type this character while in a menu prompt to rotate around the lines of it."); | |
5378 | XSET (menu_prompt_more_char, Lisp_Int, ' '); | |
9fa4395d RS |
5379 | |
5380 | DEFVAR_INT ("extra-keyboard-modifiers", &extra_keyboard_modifiers, | |
5381 | "A mask of additional modifier keys to use with every keyboard character.\n\ | |
ad163903 JB |
5382 | Emacs applies the modifiers of the character stored here to each keyboard\n\ |
5383 | character it reads. For example, after evaluating the expression\n\ | |
80645119 JB |
5384 | (setq extra-keyboard-modifiers ?\C-x)\n\ |
5385 | all input characters will have the control modifier applied to them.\n\ | |
5386 | \n\ | |
5387 | Note that the character ?\C-@, equivalent to the integer zero, does\n\ | |
5388 | not count as a control character; rather, it counts as a character\n\ | |
27203ead | 5389 | with no modifiers; thus, setting `extra-keyboard-modifiers' to zero\n\ |
80645119 | 5390 | cancels any modification."); |
9fa4395d | 5391 | extra_keyboard_modifiers = 0; |
86e5706b RS |
5392 | |
5393 | DEFVAR_LISP ("deactivate-mark", &Vdeactivate_mark, | |
5394 | "If an editing command sets this to t, deactivate the mark afterward.\n\ | |
5395 | The command loop sets this to nil before each command,\n\ | |
5396 | and tests the value when the command returns.\n\ | |
5397 | Buffer modification stores t in this variable."); | |
5398 | Vdeactivate_mark = Qnil; | |
5399 | ||
5400 | DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook, | |
5401 | "Normal hook run before each command is executed."); | |
5402 | Vpre_command_hook = Qnil; | |
5403 | ||
5404 | DEFVAR_LISP ("post-command-hook", &Vpost_command_hook, | |
7e85b935 | 5405 | "Normal hook run after each command is executed."); |
86e5706b | 5406 | Vpost_command_hook = Qnil; |
48e416d4 RS |
5407 | |
5408 | DEFVAR_LISP ("lucid-menu-bar-dirty-flag", &Vlucid_menu_bar_dirty_flag, | |
5409 | "t means menu bar, specified Lucid style, needs to be recomputed."); | |
5410 | Vlucid_menu_bar_dirty_flag = Qnil; | |
a73c5e29 | 5411 | |
9f9c0e27 RS |
5412 | DEFVAR_LISP ("menu-bar-final-items", &Vmenu_bar_final_items, |
5413 | "List of menu bar items to move to the end of the menu bar.\n\ | |
a612e298 | 5414 | The elements of the list are event types that may have menu bar bindings."); |
9f9c0e27 | 5415 | Vmenu_bar_final_items = Qnil; |
284f4730 JB |
5416 | } |
5417 | ||
5418 | keys_of_keyboard () | |
5419 | { | |
5420 | initial_define_key (global_map, Ctl ('Z'), "suspend-emacs"); | |
5421 | initial_define_key (control_x_map, Ctl ('Z'), "suspend-emacs"); | |
5422 | initial_define_key (meta_map, Ctl ('C'), "exit-recursive-edit"); | |
5423 | initial_define_key (global_map, Ctl (']'), "abort-recursive-edit"); | |
5424 | initial_define_key (meta_map, 'x', "execute-extended-command"); | |
5425 | } |