428
+ − 1 /* The portable interface to event streams.
+ − 2 Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+ − 3 Copyright (C) 1995 Board of Trustees, University of Illinois.
+ − 4 Copyright (C) 1995 Sun Microsystems, Inc.
1268
+ − 5 Copyright (C) 1995, 1996, 2001, 2002, 2003 Ben Wing.
428
+ − 6
+ − 7 This file is part of XEmacs.
+ − 8
+ − 9 XEmacs is free software; you can redistribute it and/or modify it
+ − 10 under the terms of the GNU General Public License as published by the
+ − 11 Free Software Foundation; either version 2, or (at your option) any
+ − 12 later version.
+ − 13
+ − 14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 17 for more details.
+ − 18
+ − 19 You should have received a copy of the GNU General Public License
+ − 20 along with XEmacs; see the file COPYING. If not, write to
+ − 21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 22 Boston, MA 02111-1307, USA. */
+ − 23
+ − 24 /* Synched up with: Not in FSF. */
+ − 25
442
+ − 26 /* Authorship:
+ − 27
+ − 28 Created 1991 by Jamie Zawinski.
+ − 29 A great deal of work over the ages by Ben Wing (Mule-ization for 19.12,
+ − 30 device abstraction for 19.12/19.13, async timers for 19.14,
+ − 31 rewriting of focus code for 19.12, pre-idle hook for 19.12,
+ − 32 redoing of signal and quit handling for 19.9 and 19.12,
+ − 33 misc-user events to clean up menu/scrollbar handling for 19.11,
+ − 34 function-key-map/key-translation-map/keyboard-translate-table for
+ − 35 19.13/19.14, open-dribble-file for 19.13, much other cleanup).
+ − 36 focus-follows-mouse from Chuck Thompson, 1995.
+ − 37 XIM stuff by Martin Buchholz, c. 1996?.
+ − 38 */
+ − 39
428
+ − 40 /* This file has been Mule-ized. */
+ − 41
+ − 42 /*
+ − 43 * DANGER!!
+ − 44 *
+ − 45 * If you ever change ANYTHING in this file, you MUST run the
+ − 46 * testcases at the end to make sure that you haven't changed
+ − 47 * the semantics of recent-keys, last-input-char, or keyboard
+ − 48 * macros. You'd be surprised how easy it is to break this.
+ − 49 *
+ − 50 */
+ − 51
+ − 52 /* TODO:
1204
+ − 53 [This stuff is way too hard to maintain - needs rework.]
+ − 54 I don't think it's that bad in the main. I've done a fair amount of
+ − 55 cleanup work over the ages; the only stuff that's probably still somewhat
+ − 56 messy is the command-builder handling, which is that way because it's
+ − 57 trying to be "compatible" with pseudo-standards established by Emacs
+ − 58 v18.
428
+ − 59
+ − 60 The command builder should deal only with key and button events.
+ − 61 Other command events should be able to come in the MIDDLE of a key
+ − 62 sequence, without disturbing the key sequence composition, or the
+ − 63 command builder structure representing it.
+ − 64
+ − 65 Someone should rethink universal-argument and figure out how an
+ − 66 arbitrary command can influence the next command (universal-argument
+ − 67 or universal-coding-system-argument) or the next key (hyperify).
+ − 68
+ − 69 Both C-h and Help in the middle of a key sequence should trigger
+ − 70 prefix-help-command. help-char is stupid. Maybe we need
+ − 71 keymap-of-last-resort?
+ − 72
+ − 73 After prefix-help is run, one should be able to CONTINUE TYPING,
+ − 74 instead of RETYPING, the key sequence.
+ − 75 */
+ − 76
+ − 77 #include <config.h>
+ − 78 #include "lisp.h"
+ − 79
+ − 80 #include "blocktype.h"
+ − 81 #include "buffer.h"
+ − 82 #include "commands.h"
872
+ − 83 #include "device-impl.h"
428
+ − 84 #include "elhash.h"
+ − 85 #include "events.h"
872
+ − 86 #include "frame-impl.h"
428
+ − 87 #include "insdel.h" /* for buffer_reset_changes */
+ − 88 #include "keymap.h"
+ − 89 #include "lstream.h"
+ − 90 #include "macros.h" /* for defining_keyboard_macro */
442
+ − 91 #include "menubar.h" /* #### for evil kludges. */
428
+ − 92 #include "process.h"
1292
+ − 93 #include "profile.h"
872
+ − 94 #include "window-impl.h"
428
+ − 95
+ − 96 #include "sysdep.h" /* init_poll_for_quit() */
+ − 97 #include "syssignal.h" /* SIGCHLD, etc. */
+ − 98 #include "sysfile.h"
+ − 99 #include "systime.h" /* to set Vlast_input_time */
+ − 100
+ − 101 #include "file-coding.h"
+ − 102
+ − 103 #include <errno.h>
+ − 104
+ − 105 /* The number of keystrokes between auto-saves. */
458
+ − 106 static Fixnum auto_save_interval;
428
+ − 107
+ − 108 Lisp_Object Qundefined_keystroke_sequence;
563
+ − 109 Lisp_Object Qinvalid_key_binding;
428
+ − 110
+ − 111 Lisp_Object Qcommand_event_p;
+ − 112
+ − 113 /* Hooks to run before and after each command. */
+ − 114 Lisp_Object Vpre_command_hook, Vpost_command_hook;
+ − 115 Lisp_Object Qpre_command_hook, Qpost_command_hook;
+ − 116
442
+ − 117 /* See simple.el */
+ − 118 Lisp_Object Qhandle_pre_motion_command, Qhandle_post_motion_command;
+ − 119
428
+ − 120 /* Hook run when XEmacs is about to be idle. */
+ − 121 Lisp_Object Qpre_idle_hook, Vpre_idle_hook;
+ − 122
+ − 123 /* Control gratuitous keyboard focus throwing. */
+ − 124 int focus_follows_mouse;
+ − 125
444
+ − 126 /* When true, modifier keys are sticky. */
442
+ − 127 int modifier_keys_are_sticky;
444
+ − 128 /* Modifier keys are sticky for this many milliseconds. */
+ − 129 Lisp_Object Vmodifier_keys_sticky_time;
+ − 130
+ − 131 /* Here FSF Emacs 20.7 defines Vpost_command_idle_hook,
+ − 132 post_command_idle_delay, Vdeferred_action_list, and
+ − 133 Vdeferred_action_function, but we don't because that stuff is crap,
1315
+ − 134 and we're smarter than them, and their mommas are fat. */
444
+ − 135
+ − 136 /* FSF Emacs 20.7 also defines Vinput_method_function,
+ − 137 Qinput_method_exit_on_first_char and Qinput_method_use_echo_area.
1315
+ − 138 I don't know whether this should be imported or not. */
428
+ − 139
+ − 140 /* Non-nil disable property on a command means
+ − 141 do not execute it; call disabled-command-hook's value instead. */
733
+ − 142 Lisp_Object Qdisabled;
428
+ − 143
+ − 144 /* Last keyboard or mouse input event read as a command. */
+ − 145 Lisp_Object Vlast_command_event;
+ − 146
+ − 147 /* The nearest ASCII equivalent of the above. */
+ − 148 Lisp_Object Vlast_command_char;
+ − 149
+ − 150 /* Last keyboard or mouse event read for any purpose. */
+ − 151 Lisp_Object Vlast_input_event;
+ − 152
+ − 153 /* The nearest ASCII equivalent of the above. */
+ − 154 Lisp_Object Vlast_input_char;
+ − 155
+ − 156 Lisp_Object Vcurrent_mouse_event;
+ − 157
+ − 158 /* This is fbound in cmdloop.el, see the commentary there */
+ − 159 Lisp_Object Qcancel_mode_internal;
+ − 160
+ − 161 /* If not Qnil, event objects to be read as the next command input */
+ − 162 Lisp_Object Vunread_command_events;
+ − 163 Lisp_Object Vunread_command_event; /* obsoleteness support */
+ − 164
+ − 165 static Lisp_Object Qunread_command_events, Qunread_command_event;
+ − 166
+ − 167 /* Previous command, represented by a Lisp object.
442
+ − 168 Does not include prefix commands and arg setting commands. */
428
+ − 169 Lisp_Object Vlast_command;
+ − 170
442
+ − 171 /* Contents of this-command-properties for the last command. */
+ − 172 Lisp_Object Vlast_command_properties;
+ − 173
428
+ − 174 /* If a command sets this, the value goes into
442
+ − 175 last-command for the next command. */
428
+ − 176 Lisp_Object Vthis_command;
+ − 177
442
+ − 178 /* If a command sets this, the value goes into
+ − 179 last-command-properties for the next command. */
+ − 180 Lisp_Object Vthis_command_properties;
+ − 181
428
+ − 182 /* The value of point when the last command was executed. */
665
+ − 183 Charbpos last_point_position;
428
+ − 184
+ − 185 /* The frame that was current when the last command was started. */
+ − 186 Lisp_Object Vlast_selected_frame;
+ − 187
+ − 188 /* The buffer that was current when the last command was started. */
+ − 189 Lisp_Object last_point_position_buffer;
+ − 190
+ − 191 /* A (16bit . 16bit) representation of the time of the last-command-event. */
+ − 192 Lisp_Object Vlast_input_time;
+ − 193
+ − 194 /* A (16bit 16bit usec) representation of the time
+ − 195 of the last-command-event. */
+ − 196 Lisp_Object Vlast_command_event_time;
+ − 197
+ − 198 /* Character to recognize as the help char. */
+ − 199 Lisp_Object Vhelp_char;
+ − 200
+ − 201 /* Form to execute when help char is typed. */
+ − 202 Lisp_Object Vhelp_form;
+ − 203
+ − 204 /* Command to run when the help character follows a prefix key. */
+ − 205 Lisp_Object Vprefix_help_command;
+ − 206
+ − 207 /* Flag to tell QUIT that some interesting occurrence (e.g. a keypress)
+ − 208 may have happened. */
+ − 209 volatile int something_happened;
+ − 210
+ − 211 /* Hash table to translate keysyms through */
+ − 212 Lisp_Object Vkeyboard_translate_table;
+ − 213
+ − 214 /* If control-meta-super-shift-X is undefined, try control-meta-super-x */
+ − 215 Lisp_Object Vretry_undefined_key_binding_unshifted;
+ − 216 Lisp_Object Qretry_undefined_key_binding_unshifted;
+ − 217
771
+ − 218 #ifdef MULE
428
+ − 219 /* If composed input is undefined, use self-insert-char */
+ − 220 Lisp_Object Vcomposed_character_default_binding;
771
+ − 221 #endif
428
+ − 222
+ − 223 /* Console that corresponds to our controlling terminal */
+ − 224 Lisp_Object Vcontrolling_terminal;
+ − 225
+ − 226 /* An event (actually an event chain linked through event_next) or Qnil.
+ − 227 */
+ − 228 Lisp_Object Vthis_command_keys;
+ − 229 Lisp_Object Vthis_command_keys_tail;
+ − 230
+ − 231 /* #### kludge! */
+ − 232 Lisp_Object Qauto_show_make_point_visible;
+ − 233
+ − 234 /* File in which we write all commands we read; an lstream */
+ − 235 static Lisp_Object Vdribble_file;
+ − 236
+ − 237 /* Recent keys ring location; a vector of events or nil-s */
+ − 238 Lisp_Object Vrecent_keys_ring;
+ − 239 int recent_keys_ring_size;
+ − 240 int recent_keys_ring_index;
+ − 241
+ − 242 /* Boolean specifying whether keystrokes should be added to
+ − 243 recent-keys. */
+ − 244 int inhibit_input_event_recording;
+ − 245
430
+ − 246 Lisp_Object Qself_insert_defer_undo;
+ − 247
1268
+ − 248 int in_modal_loop;
+ − 249
+ − 250 /* the number of keyboard characters read. callint.c wants this. */
+ − 251 Charcount num_input_chars;
428
+ − 252
1292
+ − 253 static Lisp_Object Qnext_event, Qdispatch_event, QSnext_event_internal;
+ − 254 static Lisp_Object QSexecute_internal_event;
+ − 255
428
+ − 256 #ifdef DEBUG_XEMACS
458
+ − 257 Fixnum debug_emacs_events;
428
+ − 258
+ − 259 static void
+ − 260 external_debugging_print_event (char *event_description, Lisp_Object event)
+ − 261 {
826
+ − 262 write_c_string (Qexternal_debugging_output, "(");
+ − 263 write_c_string (Qexternal_debugging_output, event_description);
+ − 264 write_c_string (Qexternal_debugging_output, ") ");
428
+ − 265 print_internal (event, Qexternal_debugging_output, 1);
826
+ − 266 write_c_string (Qexternal_debugging_output, "\n");
428
+ − 267 }
+ − 268 #define DEBUG_PRINT_EMACS_EVENT(event_description, event) do { \
+ − 269 if (debug_emacs_events) \
+ − 270 external_debugging_print_event (event_description, event); \
+ − 271 } while (0)
+ − 272 #else
+ − 273 #define DEBUG_PRINT_EMACS_EVENT(string, event)
+ − 274 #endif
+ − 275
+ − 276
+ − 277 /* The callback routines for the window system or terminal driver */
+ − 278 struct event_stream *event_stream;
+ − 279
2367
+ − 280
+ − 281 /*
+ − 282
+ − 283 See also
+ − 284
+ − 285 (Info-goto-node "(internals)Event Stream Callback Routines")
+ − 286 */
1204
+ − 287
428
+ − 288 static Lisp_Object command_event_queue;
+ − 289 static Lisp_Object command_event_queue_tail;
+ − 290
1204
+ − 291 Lisp_Object dispatch_event_queue;
+ − 292 static Lisp_Object dispatch_event_queue_tail;
+ − 293
428
+ − 294 /* Nonzero means echo unfinished commands after this many seconds of pause. */
+ − 295 static Lisp_Object Vecho_keystrokes;
+ − 296
+ − 297 /* The number of keystrokes since the last auto-save. */
+ − 298 static int keystrokes_since_auto_save;
+ − 299
+ − 300 /* Used by the C-g signal handler so that it will never "hard quit"
+ − 301 when waiting for an event. Otherwise holding down C-g could
+ − 302 cause a suspension back to the shell, which is generally
+ − 303 undesirable. (#### This doesn't fully work.) */
+ − 304
+ − 305 int emacs_is_blocking;
+ − 306
+ − 307 /* Handlers which run during sit-for, sleep-for and accept-process-output
+ − 308 are not allowed to recursively call these routines. We record here
+ − 309 if we are in that situation. */
+ − 310
1268
+ − 311 static int recursive_sit_for;
+ − 312
+ − 313 static void pre_command_hook (void);
+ − 314 static void post_command_hook (void);
+ − 315 static void maybe_kbd_translate (Lisp_Object event);
+ − 316 static void push_this_command_keys (Lisp_Object event);
+ − 317 static void push_recent_keys (Lisp_Object event);
+ − 318 static void dribble_out_event (Lisp_Object event);
+ − 319 static void execute_internal_event (Lisp_Object event);
+ − 320 static int is_scrollbar_event (Lisp_Object event);
428
+ − 321
+ − 322
+ − 323 /**********************************************************************/
+ − 324 /* Command-builder object */
+ − 325 /**********************************************************************/
+ − 326
+ − 327 #define XCOMMAND_BUILDER(x) \
+ − 328 XRECORD (x, command_builder, struct command_builder)
771
+ − 329 #define wrap_command_builder(p) wrap_record (p, command_builder)
428
+ − 330 #define COMMAND_BUILDERP(x) RECORDP (x, command_builder)
+ − 331 #define CHECK_COMMAND_BUILDER(x) CHECK_RECORD (x, command_builder)
771
+ − 332 #define CONCHECK_COMMAND_BUILDER(x) CONCHECK_RECORD (x, command_builder)
+ − 333
+ − 334 static Lisp_Object Vcommand_builder_free_list;
428
+ − 335
1204
+ − 336 static const struct memory_description command_builder_description [] = {
934
+ − 337 { XD_LISP_OBJECT, offsetof (struct command_builder, current_events) },
+ − 338 { XD_LISP_OBJECT, offsetof (struct command_builder, most_current_event) },
+ − 339 { XD_LISP_OBJECT, offsetof (struct command_builder, last_non_munged_event) },
+ − 340 { XD_LISP_OBJECT, offsetof (struct command_builder, console) },
1204
+ − 341 { XD_LISP_OBJECT_ARRAY, offsetof (struct command_builder, first_mungeable_event), 2 },
934
+ − 342 { XD_END }
+ − 343 };
+ − 344
428
+ − 345 static Lisp_Object
+ − 346 mark_command_builder (Lisp_Object obj)
+ − 347 {
+ − 348 struct command_builder *builder = XCOMMAND_BUILDER (obj);
+ − 349 mark_object (builder->current_events);
+ − 350 mark_object (builder->most_current_event);
+ − 351 mark_object (builder->last_non_munged_event);
1204
+ − 352 mark_object (builder->first_mungeable_event[0]);
+ − 353 mark_object (builder->first_mungeable_event[1]);
428
+ − 354 return builder->console;
+ − 355 }
+ − 356
+ − 357 static void
+ − 358 finalize_command_builder (void *header, int for_disksave)
+ − 359 {
+ − 360 if (!for_disksave)
+ − 361 {
771
+ − 362 struct command_builder *b = (struct command_builder *) header;
+ − 363 if (b->echo_buf)
+ − 364 {
1726
+ − 365 xfree (b->echo_buf, Ibyte *);
771
+ − 366 b->echo_buf = 0;
+ − 367 }
428
+ − 368 }
+ − 369 }
+ − 370
934
+ − 371 DEFINE_LRECORD_IMPLEMENTATION ("command-builder", command_builder,
+ − 372 0, /*dumpable-flag*/
+ − 373 mark_command_builder, internal_object_printer,
+ − 374 finalize_command_builder, 0, 0,
+ − 375 command_builder_description,
+ − 376 struct command_builder);
771
+ − 377
428
+ − 378 static void
+ − 379 reset_command_builder_event_chain (struct command_builder *builder)
+ − 380 {
+ − 381 builder->current_events = Qnil;
+ − 382 builder->most_current_event = Qnil;
+ − 383 builder->last_non_munged_event = Qnil;
1204
+ − 384 builder->first_mungeable_event[0] = Qnil;
+ − 385 builder->first_mungeable_event[1] = Qnil;
428
+ − 386 }
+ − 387
+ − 388 Lisp_Object
771
+ − 389 allocate_command_builder (Lisp_Object console, int with_echo_buf)
428
+ − 390 {
771
+ − 391 Lisp_Object builder_obj =
1204
+ − 392 alloc_managed_lcrecord (Vcommand_builder_free_list);
771
+ − 393 struct command_builder *builder = XCOMMAND_BUILDER (builder_obj);
428
+ − 394
+ − 395 builder->console = console;
+ − 396 reset_command_builder_event_chain (builder);
771
+ − 397 if (with_echo_buf)
+ − 398 {
+ − 399 /* #### This badly needs to be turned into a Dynarr */
+ − 400 builder->echo_buf_length = 300; /* #### Kludge */
867
+ − 401 builder->echo_buf = xnew_array (Ibyte, builder->echo_buf_length);
771
+ − 402 builder->echo_buf[0] = 0;
+ − 403 }
+ − 404 else
+ − 405 {
+ − 406 builder->echo_buf_length = 0;
+ − 407 builder->echo_buf = NULL;
+ − 408 }
428
+ − 409 builder->echo_buf_index = -1;
+ − 410 builder->self_insert_countdown = 0;
+ − 411
+ − 412 return builder_obj;
+ − 413 }
+ − 414
771
+ − 415 /* Copy or clone COLLAPSING (copy to NEW_BUILDINGS if non-zero,
+ − 416 otherwise clone); but don't copy the echo-buf stuff. (The calling
+ − 417 routines don't need it and will reset it, and we would rather avoid
+ − 418 malloc.) */
+ − 419
+ − 420 static Lisp_Object
+ − 421 copy_command_builder (struct command_builder *collapsing,
+ − 422 struct command_builder *new_buildings)
+ − 423 {
+ − 424 if (!new_buildings)
+ − 425 new_buildings = XCOMMAND_BUILDER (allocate_command_builder (Qnil, 0));
+ − 426
+ − 427 new_buildings->self_insert_countdown = collapsing->self_insert_countdown;
+ − 428
+ − 429 deallocate_event_chain (new_buildings->current_events);
+ − 430 new_buildings->current_events =
+ − 431 copy_event_chain (collapsing->current_events);
+ − 432
+ − 433 new_buildings->most_current_event =
+ − 434 transfer_event_chain_pointer (collapsing->most_current_event,
+ − 435 collapsing->current_events,
+ − 436 new_buildings->current_events);
+ − 437 new_buildings->last_non_munged_event =
+ − 438 transfer_event_chain_pointer (collapsing->last_non_munged_event,
+ − 439 collapsing->current_events,
+ − 440 new_buildings->current_events);
1204
+ − 441 new_buildings->first_mungeable_event[0] =
+ − 442 transfer_event_chain_pointer (collapsing->first_mungeable_event[0],
771
+ − 443 collapsing->current_events,
+ − 444 new_buildings->current_events);
1204
+ − 445 new_buildings->first_mungeable_event[1] =
+ − 446 transfer_event_chain_pointer (collapsing->first_mungeable_event[1],
771
+ − 447 collapsing->current_events,
+ − 448 new_buildings->current_events);
+ − 449
+ − 450 return wrap_command_builder (new_buildings);
+ − 451 }
+ − 452
+ − 453 static void
+ − 454 free_command_builder (struct command_builder *builder)
+ − 455 {
+ − 456 if (builder->echo_buf)
+ − 457 {
1726
+ − 458 xfree (builder->echo_buf, Ibyte *);
771
+ − 459 builder->echo_buf = NULL;
+ − 460 }
+ − 461 free_managed_lcrecord (Vcommand_builder_free_list,
+ − 462 wrap_command_builder (builder));
+ − 463 }
+ − 464
428
+ − 465 static void
+ − 466 command_builder_append_event (struct command_builder *builder,
+ − 467 Lisp_Object event)
+ − 468 {
+ − 469 assert (EVENTP (event));
+ − 470
771
+ − 471 event = Fcopy_event (event, Qnil);
428
+ − 472 if (EVENTP (builder->most_current_event))
+ − 473 XSET_EVENT_NEXT (builder->most_current_event, event);
+ − 474 else
+ − 475 builder->current_events = event;
+ − 476
+ − 477 builder->most_current_event = event;
1204
+ − 478 if (NILP (builder->first_mungeable_event[0]))
+ − 479 builder->first_mungeable_event[0] = event;
+ − 480 if (NILP (builder->first_mungeable_event[1]))
+ − 481 builder->first_mungeable_event[1] = event;
428
+ − 482 }
+ − 483
+ − 484
+ − 485 /**********************************************************************/
+ − 486 /* Low-level interfaces onto event methods */
+ − 487 /**********************************************************************/
+ − 488
+ − 489 static void
1268
+ − 490 check_event_stream_ok (void)
428
+ − 491 {
+ − 492 if (!event_stream && noninteractive)
814
+ − 493 /* See comment in init_event_stream() */
+ − 494 init_event_stream ();
+ − 495 else assert (event_stream);
428
+ − 496 }
+ − 497
+ − 498 void
440
+ − 499 event_stream_handle_magic_event (Lisp_Event *event)
428
+ − 500 {
1268
+ − 501 check_event_stream_ok ();
428
+ − 502 event_stream->handle_magic_event_cb (event);
+ − 503 }
+ − 504
788
+ − 505 void
+ − 506 event_stream_format_magic_event (Lisp_Event *event, Lisp_Object pstream)
+ − 507 {
1268
+ − 508 check_event_stream_ok ();
788
+ − 509 event_stream->format_magic_event_cb (event, pstream);
+ − 510 }
+ − 511
+ − 512 int
+ − 513 event_stream_compare_magic_event (Lisp_Event *e1, Lisp_Event *e2)
+ − 514 {
1268
+ − 515 check_event_stream_ok ();
788
+ − 516 return event_stream->compare_magic_event_cb (e1, e2);
+ − 517 }
+ − 518
+ − 519 Hashcode
+ − 520 event_stream_hash_magic_event (Lisp_Event *e)
+ − 521 {
1268
+ − 522 check_event_stream_ok ();
788
+ − 523 return event_stream->hash_magic_event_cb (e);
+ − 524 }
+ − 525
428
+ − 526 static int
+ − 527 event_stream_add_timeout (EMACS_TIME timeout)
+ − 528 {
1268
+ − 529 check_event_stream_ok ();
428
+ − 530 return event_stream->add_timeout_cb (timeout);
+ − 531 }
+ − 532
+ − 533 static void
+ − 534 event_stream_remove_timeout (int id)
+ − 535 {
1268
+ − 536 check_event_stream_ok ();
428
+ − 537 event_stream->remove_timeout_cb (id);
+ − 538 }
+ − 539
+ − 540 void
+ − 541 event_stream_select_console (struct console *con)
+ − 542 {
1268
+ − 543 check_event_stream_ok ();
428
+ − 544 if (!con->input_enabled)
+ − 545 {
+ − 546 event_stream->select_console_cb (con);
+ − 547 con->input_enabled = 1;
+ − 548 }
+ − 549 }
+ − 550
+ − 551 void
+ − 552 event_stream_unselect_console (struct console *con)
+ − 553 {
1268
+ − 554 check_event_stream_ok ();
428
+ − 555 if (con->input_enabled)
+ − 556 {
+ − 557 event_stream->unselect_console_cb (con);
+ − 558 con->input_enabled = 0;
+ − 559 }
+ − 560 }
+ − 561
+ − 562 void
853
+ − 563 event_stream_select_process (Lisp_Process *proc, int doin, int doerr)
428
+ − 564 {
853
+ − 565 int cur_in, cur_err;
+ − 566
1268
+ − 567 check_event_stream_ok ();
853
+ − 568
+ − 569 cur_in = get_process_selected_p (proc, 0);
+ − 570 if (cur_in)
+ − 571 doin = 0;
+ − 572
+ − 573 if (!process_has_separate_stderr (wrap_process (proc)))
428
+ − 574 {
853
+ − 575 doerr = 0;
+ − 576 cur_err = 0;
+ − 577 }
+ − 578 else
+ − 579 {
+ − 580 cur_err = get_process_selected_p (proc, 1);
+ − 581 if (cur_err)
+ − 582 doerr = 0;
+ − 583 }
+ − 584
+ − 585 if (doin || doerr)
+ − 586 {
+ − 587 event_stream->select_process_cb (proc, doin, doerr);
+ − 588 set_process_selected_p (proc, cur_in || doin, cur_err || doerr);
428
+ − 589 }
+ − 590 }
+ − 591
+ − 592 void
853
+ − 593 event_stream_unselect_process (Lisp_Process *proc, int doin, int doerr)
428
+ − 594 {
853
+ − 595 int cur_in, cur_err;
+ − 596
1268
+ − 597 check_event_stream_ok ();
853
+ − 598
+ − 599 cur_in = get_process_selected_p (proc, 0);
+ − 600 if (!cur_in)
+ − 601 doin = 0;
+ − 602
+ − 603 if (!process_has_separate_stderr (wrap_process (proc)))
428
+ − 604 {
853
+ − 605 doerr = 0;
+ − 606 cur_err = 0;
+ − 607 }
+ − 608 else
+ − 609 {
+ − 610 cur_err = get_process_selected_p (proc, 1);
+ − 611 if (!cur_err)
+ − 612 doerr = 0;
+ − 613 }
+ − 614
+ − 615 if (doin || doerr)
+ − 616 {
+ − 617 event_stream->unselect_process_cb (proc, doin, doerr);
+ − 618 set_process_selected_p (proc, cur_in && !doin, cur_err && !doerr);
428
+ − 619 }
+ − 620 }
+ − 621
853
+ − 622 void
+ − 623 event_stream_create_io_streams (void *inhandle, void *outhandle,
+ − 624 void *errhandle, Lisp_Object *instream,
+ − 625 Lisp_Object *outstream,
+ − 626 Lisp_Object *errstream,
+ − 627 USID *in_usid,
+ − 628 USID *err_usid,
+ − 629 int flags)
428
+ − 630 {
1268
+ − 631 check_event_stream_ok ();
853
+ − 632 event_stream->create_io_streams_cb
+ − 633 (inhandle, outhandle, errhandle, instream, outstream, errstream,
+ − 634 in_usid, err_usid, flags);
428
+ − 635 }
+ − 636
853
+ − 637 void
+ − 638 event_stream_delete_io_streams (Lisp_Object instream,
+ − 639 Lisp_Object outstream,
+ − 640 Lisp_Object errstream,
+ − 641 USID *in_usid,
+ − 642 USID *err_usid)
428
+ − 643 {
1268
+ − 644 check_event_stream_ok ();
853
+ − 645 event_stream->delete_io_streams_cb (instream, outstream, errstream,
+ − 646 in_usid, err_usid);
428
+ − 647 }
+ − 648
442
+ − 649 static int
+ − 650 event_stream_current_event_timestamp (struct console *c)
+ − 651 {
+ − 652 if (event_stream && event_stream->current_event_timestamp_cb)
+ − 653 return event_stream->current_event_timestamp_cb (c);
+ − 654 else
+ − 655 return 0;
+ − 656 }
428
+ − 657
+ − 658
+ − 659 /**********************************************************************/
+ − 660 /* Character prompting */
+ − 661 /**********************************************************************/
+ − 662
+ − 663 static void
+ − 664 echo_key_event (struct command_builder *command_builder,
+ − 665 Lisp_Object event)
+ − 666 {
+ − 667 /* This function can GC */
793
+ − 668 DECLARE_EISTRING_MALLOC (buf);
428
+ − 669 Bytecount buf_index = command_builder->echo_buf_index;
867
+ − 670 Ibyte *e;
428
+ − 671 Bytecount len;
+ − 672
+ − 673 if (buf_index < 0)
+ − 674 {
+ − 675 buf_index = 0; /* We're echoing now */
+ − 676 clear_echo_area (selected_frame (), Qnil, 0);
+ − 677 }
+ − 678
934
+ − 679 format_event_object (buf, event, 1);
793
+ − 680 len = eilen (buf);
428
+ − 681
+ − 682 if (len + buf_index + 4 > command_builder->echo_buf_length)
793
+ − 683 {
+ − 684 eifree (buf);
+ − 685 return;
+ − 686 }
428
+ − 687 e = command_builder->echo_buf + buf_index;
793
+ − 688 memcpy (e, eidata (buf), len);
428
+ − 689 e += len;
793
+ − 690 eifree (buf);
428
+ − 691
+ − 692 e[0] = ' ';
+ − 693 e[1] = '-';
+ − 694 e[2] = ' ';
+ − 695 e[3] = 0;
+ − 696
+ − 697 command_builder->echo_buf_index = buf_index + len + 1;
+ − 698 }
+ − 699
+ − 700 static void
+ − 701 regenerate_echo_keys_from_this_command_keys (struct command_builder *
+ − 702 builder)
+ − 703 {
+ − 704 Lisp_Object event;
+ − 705
+ − 706 builder->echo_buf_index = 0;
+ − 707
+ − 708 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
+ − 709 echo_key_event (builder, event);
+ − 710 }
+ − 711
+ − 712 static void
+ − 713 maybe_echo_keys (struct command_builder *command_builder, int no_snooze)
+ − 714 {
+ − 715 /* This function can GC */
+ − 716 double echo_keystrokes;
+ − 717 struct frame *f = selected_frame ();
853
+ − 718 int depth = begin_dont_check_for_quit ();
+ − 719
428
+ − 720 /* Message turns off echoing unless more keystrokes turn it on again. */
+ − 721 if (echo_area_active (f) && !EQ (Qcommand, echo_area_status (f)))
853
+ − 722 goto done;
428
+ − 723
+ − 724 if (INTP (Vecho_keystrokes) || FLOATP (Vecho_keystrokes))
+ − 725 echo_keystrokes = extract_float (Vecho_keystrokes);
+ − 726 else
+ − 727 echo_keystrokes = 0;
+ − 728
+ − 729 if (minibuf_level == 0
+ − 730 && echo_keystrokes > 0.0
442
+ − 731 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID)
+ − 732 && !x_kludge_lw_menu_active ()
+ − 733 #endif
+ − 734 )
428
+ − 735 {
+ − 736 if (!no_snooze)
+ − 737 {
+ − 738 if (NILP (Fsit_for (Vecho_keystrokes, Qnil)))
+ − 739 /* input came in, so don't echo. */
853
+ − 740 goto done;
428
+ − 741 }
+ − 742
+ − 743 echo_area_message (f, command_builder->echo_buf, Qnil, 0,
+ − 744 /* not echo_buf_index. That doesn't include
+ − 745 the terminating " - ". */
+ − 746 strlen ((char *) command_builder->echo_buf),
+ − 747 Qcommand);
+ − 748 }
853
+ − 749
+ − 750 done:
+ − 751 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */
+ − 752 unbind_to (depth);
428
+ − 753 }
+ − 754
+ − 755 static void
+ − 756 reset_key_echo (struct command_builder *command_builder,
+ − 757 int remove_echo_area_echo)
+ − 758 {
+ − 759 /* This function can GC */
+ − 760 struct frame *f = selected_frame ();
+ − 761
757
+ − 762 if (command_builder)
+ − 763 command_builder->echo_buf_index = -1;
428
+ − 764
+ − 765 if (remove_echo_area_echo)
+ − 766 clear_echo_area (f, Qcommand, 0);
+ − 767 }
+ − 768
+ − 769
+ − 770 /**********************************************************************/
+ − 771 /* random junk */
+ − 772 /**********************************************************************/
+ − 773
+ − 774 /* NB: The following auto-save stuff is in keyboard.c in FSFmacs, and
+ − 775 keystrokes_since_auto_save is equivalent to the difference between
+ − 776 num_nonmacro_input_chars and last_auto_save. */
+ − 777
444
+ − 778 /* When an auto-save happens, record the number of keystrokes, and
+ − 779 don't do again soon. */
428
+ − 780
+ − 781 void
+ − 782 record_auto_save (void)
+ − 783 {
+ − 784 keystrokes_since_auto_save = 0;
+ − 785 }
+ − 786
+ − 787 /* Make an auto save happen as soon as possible at command level. */
+ − 788
+ − 789 void
+ − 790 force_auto_save_soon (void)
+ − 791 {
+ − 792 keystrokes_since_auto_save = 1 + max (auto_save_interval, 20);
+ − 793 }
+ − 794
+ − 795 static void
+ − 796 maybe_do_auto_save (void)
+ − 797 {
+ − 798 /* This function can call lisp */
+ − 799 keystrokes_since_auto_save++;
+ − 800 if (auto_save_interval > 0 &&
+ − 801 keystrokes_since_auto_save > max (auto_save_interval, 20) &&
1268
+ − 802 !detect_input_pending (1))
428
+ − 803 {
+ − 804 Fdo_auto_save (Qnil, Qnil);
+ − 805 record_auto_save ();
+ − 806 }
+ − 807 }
+ − 808
+ − 809 static Lisp_Object
+ − 810 print_help (Lisp_Object object)
+ − 811 {
+ − 812 Fprinc (object, Qnil);
+ − 813 return Qnil;
+ − 814 }
+ − 815
+ − 816 static void
+ − 817 execute_help_form (struct command_builder *command_builder,
+ − 818 Lisp_Object event)
+ − 819 {
+ − 820 /* This function can GC */
+ − 821 Lisp_Object help = Qnil;
+ − 822 int speccount = specpdl_depth ();
+ − 823 Bytecount buf_index = command_builder->echo_buf_index;
+ − 824 Lisp_Object echo = ((buf_index <= 0)
+ − 825 ? Qnil
+ − 826 : make_string (command_builder->echo_buf,
+ − 827 buf_index));
+ − 828 struct gcpro gcpro1, gcpro2;
+ − 829 GCPRO2 (echo, help);
+ − 830
+ − 831 record_unwind_protect (save_window_excursion_unwind,
1149
+ − 832 call1 (Qcurrent_window_configuration, Qnil));
428
+ − 833 reset_key_echo (command_builder, 1);
+ − 834
+ − 835 help = Feval (Vhelp_form);
+ − 836 if (STRINGP (help))
+ − 837 internal_with_output_to_temp_buffer (build_string ("*Help*"),
+ − 838 print_help, help, Qnil);
+ − 839 Fnext_command_event (event, Qnil);
+ − 840 /* Remove the help from the frame */
771
+ − 841 unbind_to (speccount);
428
+ − 842 /* Hmmmm. Tricky. The unbind restores an old window configuration,
+ − 843 apparently bypassing any setting of windows_structure_changed.
+ − 844 So we need to set it so that things get redrawn properly. */
+ − 845 /* #### This is massive overkill. Look at doing it better once the
+ − 846 new redisplay is fully in place. */
+ − 847 {
+ − 848 Lisp_Object frmcons, devcons, concons;
+ − 849 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons)
+ − 850 {
+ − 851 struct frame *f = XFRAME (XCAR (frmcons));
+ − 852 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f);
+ − 853 }
+ − 854 }
+ − 855
+ − 856 redisplay ();
1204
+ − 857 if (event_matches_key_specifier_p (event, make_char (' ')))
428
+ − 858 {
+ − 859 /* Discard next key if it is a space */
+ − 860 reset_key_echo (command_builder, 1);
+ − 861 Fnext_command_event (event, Qnil);
+ − 862 }
+ − 863
+ − 864 command_builder->echo_buf_index = buf_index;
+ − 865 if (buf_index > 0)
+ − 866 memcpy (command_builder->echo_buf,
+ − 867 XSTRING_DATA (echo), buf_index + 1); /* terminating 0 */
+ − 868 UNGCPRO;
+ − 869 }
+ − 870
+ − 871
+ − 872 /**********************************************************************/
+ − 873 /* timeouts */
+ − 874 /**********************************************************************/
+ − 875
593
+ − 876 /* NOTE: "Low-level" or "interval" timeouts are one-shot timeouts that
+ − 877 measure single intervals. "High-level timeouts" or "wakeups" are
+ − 878 the objects generated by `add-timeout' or `add-async-timout' --
+ − 879 they can fire repeatedly (and in fact can have a different initial
+ − 880 time and resignal time). Given the nature of both setitimer() and
+ − 881 select() -- i.e. all we get is a single one-shot timer -- we have
+ − 882 to decompose all high-level timeouts into a series of intervals or
+ − 883 low-level timeouts.
+ − 884
+ − 885 Low-level timeouts are of two varieties: synchronous and asynchronous.
+ − 886 The former are handled at the window-system level, the latter in
+ − 887 signal.c.
+ − 888 */
+ − 889
+ − 890 /**** Low-level timeout helper functions. ****
428
+ − 891
+ − 892 These functions maintain a sorted list of one-shot timeouts (where
593
+ − 893 the timeouts are in absolute time so we never lose any time as a
+ − 894 result of the delay between noting an interval and firing the next
+ − 895 one). They are intended for use by functions that need to convert
+ − 896 a list of absolute timeouts into a series of intervals to wait
+ − 897 for. */
428
+ − 898
+ − 899 /* We ensure that 0 is never a valid ID, so that a value of 0 can be
+ − 900 used to indicate an absence of a timer. */
+ − 901 static int low_level_timeout_id_tick;
+ − 902
+ − 903 static struct low_level_timeout_blocktype
+ − 904 {
+ − 905 Blocktype_declare (struct low_level_timeout);
+ − 906 } *the_low_level_timeout_blocktype;
+ − 907
+ − 908 /* Add a one-shot timeout at time TIME to TIMEOUT_LIST. Return
+ − 909 a unique ID identifying the timeout. */
+ − 910
+ − 911 int
+ − 912 add_low_level_timeout (struct low_level_timeout **timeout_list,
+ − 913 EMACS_TIME thyme)
+ − 914 {
+ − 915 struct low_level_timeout *tm;
+ − 916 struct low_level_timeout *t, **tt;
+ − 917
+ − 918 /* Allocate a new time struct. */
+ − 919
+ − 920 tm = Blocktype_alloc (the_low_level_timeout_blocktype);
+ − 921 tm->next = NULL;
593
+ − 922 /* Don't just use ++low_level_timeout_id_tick, for the (admittedly
+ − 923 rare) case in which numbers wrap around. */
428
+ − 924 if (low_level_timeout_id_tick == 0)
+ − 925 low_level_timeout_id_tick++;
+ − 926 tm->id = low_level_timeout_id_tick++;
+ − 927 tm->time = thyme;
+ − 928
+ − 929 /* Add it to the queue. */
+ − 930
+ − 931 tt = timeout_list;
+ − 932 t = *tt;
+ − 933 while (t && EMACS_TIME_EQUAL_OR_GREATER (tm->time, t->time))
+ − 934 {
+ − 935 tt = &t->next;
+ − 936 t = *tt;
+ − 937 }
+ − 938 tm->next = t;
+ − 939 *tt = tm;
+ − 940
+ − 941 return tm->id;
+ − 942 }
+ − 943
+ − 944 /* Remove the low-level timeout identified by ID from TIMEOUT_LIST.
+ − 945 If the timeout is not there, do nothing. */
+ − 946
+ − 947 void
+ − 948 remove_low_level_timeout (struct low_level_timeout **timeout_list, int id)
+ − 949 {
+ − 950 struct low_level_timeout *t, *prev;
+ − 951
+ − 952 /* find it */
+ − 953
+ − 954 for (t = *timeout_list, prev = NULL; t && t->id != id; t = t->next)
+ − 955 prev = t;
+ − 956
+ − 957 if (!t)
+ − 958 return; /* couldn't find it */
+ − 959
+ − 960 if (!prev)
+ − 961 *timeout_list = t->next;
+ − 962 else prev->next = t->next;
+ − 963
+ − 964 Blocktype_free (the_low_level_timeout_blocktype, t);
+ − 965 }
+ − 966
+ − 967 /* If there are timeouts on TIMEOUT_LIST, store the relative time
+ − 968 interval to the first timeout on the list into INTERVAL and
+ − 969 return 1. Otherwise, return 0. */
+ − 970
+ − 971 int
+ − 972 get_low_level_timeout_interval (struct low_level_timeout *timeout_list,
+ − 973 EMACS_TIME *interval)
+ − 974 {
+ − 975 if (!timeout_list) /* no timer events; block indefinitely */
+ − 976 return 0;
+ − 977 else
+ − 978 {
+ − 979 EMACS_TIME current_time;
+ − 980
+ − 981 /* The time to block is the difference between the first
+ − 982 (earliest) timer on the queue and the current time.
+ − 983 If that is negative, then the timer will fire immediately
+ − 984 but we still have to call select(), with a zero-valued
+ − 985 timeout: user events must have precedence over timer events. */
+ − 986 EMACS_GET_TIME (current_time);
+ − 987 if (EMACS_TIME_GREATER (timeout_list->time, current_time))
+ − 988 EMACS_SUB_TIME (*interval, timeout_list->time,
+ − 989 current_time);
+ − 990 else
+ − 991 EMACS_SET_SECS_USECS (*interval, 0, 0);
+ − 992 return 1;
+ − 993 }
+ − 994 }
+ − 995
+ − 996 /* Pop the first (i.e. soonest) timeout off of TIMEOUT_LIST and return
+ − 997 its ID. Also, if TIME_OUT is not 0, store the absolute time of the
+ − 998 timeout into TIME_OUT. */
+ − 999
+ − 1000 int
+ − 1001 pop_low_level_timeout (struct low_level_timeout **timeout_list,
+ − 1002 EMACS_TIME *time_out)
+ − 1003 {
+ − 1004 struct low_level_timeout *tm = *timeout_list;
+ − 1005 int id;
+ − 1006
+ − 1007 assert (tm);
+ − 1008 id = tm->id;
+ − 1009 if (time_out)
+ − 1010 *time_out = tm->time;
+ − 1011 *timeout_list = tm->next;
+ − 1012 Blocktype_free (the_low_level_timeout_blocktype, tm);
+ − 1013 return id;
+ − 1014 }
+ − 1015
+ − 1016
593
+ − 1017 /**** High-level timeout functions. **** */
+ − 1018
+ − 1019 /* We ensure that 0 is never a valid ID, so that a value of 0 can be
+ − 1020 used to indicate an absence of a timer. */
428
+ − 1021 static int timeout_id_tick;
+ − 1022
+ − 1023 static Lisp_Object pending_timeout_list, pending_async_timeout_list;
+ − 1024
+ − 1025 static Lisp_Object Vtimeout_free_list;
+ − 1026
+ − 1027 static Lisp_Object
+ − 1028 mark_timeout (Lisp_Object obj)
+ − 1029 {
440
+ − 1030 Lisp_Timeout *tm = XTIMEOUT (obj);
428
+ − 1031 mark_object (tm->function);
+ − 1032 return tm->object;
+ − 1033 }
+ − 1034
1204
+ − 1035 static const struct memory_description timeout_description[] = {
440
+ − 1036 { XD_LISP_OBJECT, offsetof (Lisp_Timeout, function) },
+ − 1037 { XD_LISP_OBJECT, offsetof (Lisp_Timeout, object) },
428
+ − 1038 { XD_END }
+ − 1039 };
+ − 1040
934
+ − 1041 DEFINE_LRECORD_IMPLEMENTATION ("timeout", timeout,
+ − 1042 1, /*dumpable-flag*/
+ − 1043 mark_timeout, internal_object_printer,
+ − 1044 0, 0, 0, timeout_description, Lisp_Timeout);
428
+ − 1045
+ − 1046 /* Generate a timeout and return its ID. */
+ − 1047
+ − 1048 int
+ − 1049 event_stream_generate_wakeup (unsigned int milliseconds,
+ − 1050 unsigned int vanilliseconds,
+ − 1051 Lisp_Object function, Lisp_Object object,
+ − 1052 int async_p)
+ − 1053 {
1204
+ − 1054 Lisp_Object op = alloc_managed_lcrecord (Vtimeout_free_list);
440
+ − 1055 Lisp_Timeout *timeout = XTIMEOUT (op);
428
+ − 1056 EMACS_TIME current_time;
+ − 1057 EMACS_TIME interval;
+ − 1058
593
+ − 1059 /* Don't just use ++timeout_id_tick, for the (admittedly rare) case
+ − 1060 in which numbers wrap around. */
+ − 1061 if (timeout_id_tick == 0)
+ − 1062 timeout_id_tick++;
428
+ − 1063 timeout->id = timeout_id_tick++;
+ − 1064 timeout->resignal_msecs = vanilliseconds;
+ − 1065 timeout->function = function;
+ − 1066 timeout->object = object;
+ − 1067
+ − 1068 EMACS_GET_TIME (current_time);
+ − 1069 EMACS_SET_SECS_USECS (interval, milliseconds / 1000,
+ − 1070 1000 * (milliseconds % 1000));
+ − 1071 EMACS_ADD_TIME (timeout->next_signal_time, current_time, interval);
+ − 1072
+ − 1073 if (async_p)
+ − 1074 {
+ − 1075 timeout->interval_id =
593
+ − 1076 signal_add_async_interval_timeout (timeout->next_signal_time);
+ − 1077 pending_async_timeout_list =
+ − 1078 noseeum_cons (op, pending_async_timeout_list);
428
+ − 1079 }
+ − 1080 else
+ − 1081 {
+ − 1082 timeout->interval_id =
+ − 1083 event_stream_add_timeout (timeout->next_signal_time);
+ − 1084 pending_timeout_list = noseeum_cons (op, pending_timeout_list);
+ − 1085 }
+ − 1086 return timeout->id;
+ − 1087 }
+ − 1088
+ − 1089 /* Given the INTERVAL-ID of a timeout just signalled, resignal the timeout
+ − 1090 as necessary and return the timeout's ID and function and object slots.
+ − 1091
+ − 1092 This should be called as a result of receiving notice that a timeout
+ − 1093 has fired. INTERVAL-ID is *not* the timeout's ID, but is the ID that
+ − 1094 identifies this particular firing of the timeout. INTERVAL-ID's and
+ − 1095 timeout ID's are in separate number spaces and bear no relation to
+ − 1096 each other. The INTERVAL-ID is all that the event callback routines
+ − 1097 work with: they work only with one-shot intervals, not with timeouts
+ − 1098 that may fire repeatedly.
+ − 1099
+ − 1100 NOTE: The returned FUNCTION and OBJECT are *not* GC-protected at all.
+ − 1101 */
+ − 1102
593
+ − 1103 int
428
+ − 1104 event_stream_resignal_wakeup (int interval_id, int async_p,
+ − 1105 Lisp_Object *function, Lisp_Object *object)
+ − 1106 {
+ − 1107 Lisp_Object op = Qnil, rest;
440
+ − 1108 Lisp_Timeout *timeout;
428
+ − 1109 Lisp_Object *timeout_list;
+ − 1110 struct gcpro gcpro1;
+ − 1111 int id;
+ − 1112
+ − 1113 GCPRO1 (op); /* just in case ... because it's removed from the list
+ − 1114 for awhile. */
+ − 1115
+ − 1116 timeout_list = async_p ? &pending_async_timeout_list : &pending_timeout_list;
+ − 1117
+ − 1118 /* Find the timeout on the list of pending ones. */
+ − 1119 LIST_LOOP (rest, *timeout_list)
+ − 1120 {
+ − 1121 timeout = XTIMEOUT (XCAR (rest));
+ − 1122 if (timeout->interval_id == interval_id)
+ − 1123 break;
+ − 1124 }
+ − 1125
+ − 1126 assert (!NILP (rest));
+ − 1127 op = XCAR (rest);
+ − 1128 timeout = XTIMEOUT (op);
+ − 1129 /* We make sure to snarf the data out of the timeout object before
+ − 1130 we free it with free_managed_lcrecord(). */
+ − 1131 id = timeout->id;
+ − 1132 *function = timeout->function;
+ − 1133 *object = timeout->object;
+ − 1134
+ − 1135 /* Remove this one from the list of pending timeouts */
+ − 1136 *timeout_list = delq_no_quit_and_free_cons (op, *timeout_list);
+ − 1137
+ − 1138 /* If this timeout wants to be resignalled, do it now. */
+ − 1139 if (timeout->resignal_msecs)
+ − 1140 {
+ − 1141 EMACS_TIME current_time;
+ − 1142 EMACS_TIME interval;
+ − 1143
+ − 1144 /* Determine the time that the next resignalling should occur.
+ − 1145 We do that by adding the interval time to the last signalled
+ − 1146 time until we get a time that's current.
+ − 1147
+ − 1148 (This way, it doesn't matter if the timeout was signalled
+ − 1149 exactly when we asked for it, or at some time later.)
+ − 1150 */
+ − 1151 EMACS_GET_TIME (current_time);
+ − 1152 EMACS_SET_SECS_USECS (interval, timeout->resignal_msecs / 1000,
+ − 1153 1000 * (timeout->resignal_msecs % 1000));
+ − 1154 do
+ − 1155 {
+ − 1156 EMACS_ADD_TIME (timeout->next_signal_time, timeout->next_signal_time,
+ − 1157 interval);
+ − 1158 } while (EMACS_TIME_GREATER (current_time, timeout->next_signal_time));
+ − 1159
+ − 1160 if (async_p)
+ − 1161 timeout->interval_id =
593
+ − 1162 signal_add_async_interval_timeout (timeout->next_signal_time);
428
+ − 1163 else
+ − 1164 timeout->interval_id =
+ − 1165 event_stream_add_timeout (timeout->next_signal_time);
+ − 1166 /* Add back onto the list. Note that the effect of this
+ − 1167 is to move frequently-hit timeouts to the front of the
+ − 1168 list, which is a good thing. */
+ − 1169 *timeout_list = noseeum_cons (op, *timeout_list);
+ − 1170 }
+ − 1171 else
+ − 1172 free_managed_lcrecord (Vtimeout_free_list, op);
+ − 1173
+ − 1174 UNGCPRO;
+ − 1175 return id;
+ − 1176 }
+ − 1177
+ − 1178 void
+ − 1179 event_stream_disable_wakeup (int id, int async_p)
+ − 1180 {
440
+ − 1181 Lisp_Timeout *timeout = 0;
428
+ − 1182 Lisp_Object rest;
+ − 1183 Lisp_Object *timeout_list;
+ − 1184
+ − 1185 if (async_p)
+ − 1186 timeout_list = &pending_async_timeout_list;
+ − 1187 else
+ − 1188 timeout_list = &pending_timeout_list;
+ − 1189
+ − 1190 /* Find the timeout on the list of pending ones, if it's still there. */
+ − 1191 LIST_LOOP (rest, *timeout_list)
+ − 1192 {
+ − 1193 timeout = XTIMEOUT (XCAR (rest));
+ − 1194 if (timeout->id == id)
+ − 1195 break;
+ − 1196 }
+ − 1197
+ − 1198 /* If we found it, remove it from the list and disable the pending
+ − 1199 one-shot. */
+ − 1200 if (!NILP (rest))
+ − 1201 {
+ − 1202 Lisp_Object op = XCAR (rest);
+ − 1203 *timeout_list =
+ − 1204 delq_no_quit_and_free_cons (op, *timeout_list);
+ − 1205 if (async_p)
593
+ − 1206 signal_remove_async_interval_timeout (timeout->interval_id);
428
+ − 1207 else
+ − 1208 event_stream_remove_timeout (timeout->interval_id);
+ − 1209 free_managed_lcrecord (Vtimeout_free_list, op);
+ − 1210 }
+ − 1211 }
+ − 1212
+ − 1213 static int
+ − 1214 event_stream_wakeup_pending_p (int id, int async_p)
+ − 1215 {
440
+ − 1216 Lisp_Timeout *timeout;
428
+ − 1217 Lisp_Object rest;
+ − 1218 Lisp_Object timeout_list;
+ − 1219 int found = 0;
+ − 1220
+ − 1221
+ − 1222 if (async_p)
+ − 1223 timeout_list = pending_async_timeout_list;
+ − 1224 else
+ − 1225 timeout_list = pending_timeout_list;
+ − 1226
+ − 1227 /* Find the element on the list of pending ones, if it's still there. */
+ − 1228 LIST_LOOP (rest, timeout_list)
+ − 1229 {
+ − 1230 timeout = XTIMEOUT (XCAR (rest));
+ − 1231 if (timeout->id == id)
+ − 1232 {
+ − 1233 found = 1;
+ − 1234 break;
+ − 1235 }
+ − 1236 }
+ − 1237
+ − 1238 return found;
+ − 1239 }
+ − 1240
+ − 1241
+ − 1242 /**** Lisp-level timeout functions. ****/
+ − 1243
+ − 1244 static unsigned long
+ − 1245 lisp_number_to_milliseconds (Lisp_Object secs, int allow_0)
+ − 1246 {
+ − 1247 double fsecs;
+ − 1248 CHECK_INT_OR_FLOAT (secs);
+ − 1249 fsecs = XFLOATINT (secs);
+ − 1250 if (fsecs < 0)
563
+ − 1251 invalid_argument ("timeout is negative", secs);
428
+ − 1252 if (!allow_0 && fsecs == 0)
563
+ − 1253 invalid_argument ("timeout is non-positive", secs);
428
+ − 1254 if (fsecs >= (((unsigned int) 0xFFFFFFFF) / 1000))
563
+ − 1255 invalid_argument
428
+ − 1256 ("timeout would exceed 32 bits when represented in milliseconds", secs);
+ − 1257
+ − 1258 return (unsigned long) (1000 * fsecs);
+ − 1259 }
+ − 1260
+ − 1261 DEFUN ("add-timeout", Fadd_timeout, 3, 4, 0, /*
+ − 1262 Add a timeout, to be signaled after the timeout period has elapsed.
+ − 1263 SECS is a number of seconds, expressed as an integer or a float.
+ − 1264 FUNCTION will be called after that many seconds have elapsed, with one
+ − 1265 argument, the given OBJECT. If the optional RESIGNAL argument is provided,
+ − 1266 then after this timeout expires, `add-timeout' will automatically be called
+ − 1267 again with RESIGNAL as the first argument.
+ − 1268
+ − 1269 This function returns an object which is the id number of this particular
+ − 1270 timeout. You can pass that object to `disable-timeout' to turn off the
+ − 1271 timeout before it has been signalled.
+ − 1272
+ − 1273 NOTE: Id numbers as returned by this function are in a distinct namespace
+ − 1274 from those returned by `add-async-timeout'. This means that the same id
+ − 1275 number could refer to a pending synchronous timeout and a different pending
+ − 1276 asynchronous timeout, and that you cannot pass an id from `add-timeout'
+ − 1277 to `disable-async-timeout', or vice-versa.
+ − 1278
+ − 1279 The number of seconds may be expressed as a floating-point number, in which
+ − 1280 case some fractional part of a second will be used. Caveat: the usable
+ − 1281 timeout granularity will vary from system to system.
+ − 1282
+ − 1283 Adding a timeout causes a timeout event to be returned by `next-event', and
+ − 1284 the function will be invoked by `dispatch-event,' so if emacs is in a tight
+ − 1285 loop, the function will not be invoked until the next call to sit-for or
+ − 1286 until the return to top-level (the same is true of process filters).
+ − 1287
+ − 1288 If you need to have a timeout executed even when XEmacs is in the midst of
+ − 1289 running Lisp code, use `add-async-timeout'.
+ − 1290
+ − 1291 WARNING: if you are thinking of calling add-timeout from inside of a
+ − 1292 callback function as a way of resignalling a timeout, think again. There
+ − 1293 is a race condition. That's why the RESIGNAL argument exists.
+ − 1294 */
+ − 1295 (secs, function, object, resignal))
+ − 1296 {
+ − 1297 unsigned long msecs = lisp_number_to_milliseconds (secs, 0);
+ − 1298 unsigned long msecs2 = (NILP (resignal) ? 0 :
+ − 1299 lisp_number_to_milliseconds (resignal, 0));
+ − 1300 int id;
+ − 1301 Lisp_Object lid;
+ − 1302 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 0);
+ − 1303 lid = make_int (id);
2500
+ − 1304 if (id != XINT (lid)) ABORT ();
428
+ − 1305 return lid;
+ − 1306 }
+ − 1307
+ − 1308 DEFUN ("disable-timeout", Fdisable_timeout, 1, 1, 0, /*
+ − 1309 Disable a timeout from signalling any more.
+ − 1310 ID should be a timeout id number as returned by `add-timeout'. If ID
+ − 1311 corresponds to a one-shot timeout that has already signalled, nothing
+ − 1312 will happen.
+ − 1313
+ − 1314 It will not work to call this function on an id number returned by
+ − 1315 `add-async-timeout'. Use `disable-async-timeout' for that.
+ − 1316 */
+ − 1317 (id))
+ − 1318 {
+ − 1319 CHECK_INT (id);
+ − 1320 event_stream_disable_wakeup (XINT (id), 0);
+ − 1321 return Qnil;
+ − 1322 }
+ − 1323
+ − 1324 DEFUN ("add-async-timeout", Fadd_async_timeout, 3, 4, 0, /*
+ − 1325 Add an asynchronous timeout, to be signaled after an interval has elapsed.
+ − 1326 SECS is a number of seconds, expressed as an integer or a float.
+ − 1327 FUNCTION will be called after that many seconds have elapsed, with one
+ − 1328 argument, the given OBJECT. If the optional RESIGNAL argument is provided,
+ − 1329 then after this timeout expires, `add-async-timeout' will automatically be
+ − 1330 called again with RESIGNAL as the first argument.
+ − 1331
+ − 1332 This function returns an object which is the id number of this particular
+ − 1333 timeout. You can pass that object to `disable-async-timeout' to turn off
+ − 1334 the timeout before it has been signalled.
+ − 1335
+ − 1336 NOTE: Id numbers as returned by this function are in a distinct namespace
+ − 1337 from those returned by `add-timeout'. This means that the same id number
+ − 1338 could refer to a pending synchronous timeout and a different pending
+ − 1339 asynchronous timeout, and that you cannot pass an id from
+ − 1340 `add-async-timeout' to `disable-timeout', or vice-versa.
+ − 1341
+ − 1342 The number of seconds may be expressed as a floating-point number, in which
+ − 1343 case some fractional part of a second will be used. Caveat: the usable
+ − 1344 timeout granularity will vary from system to system.
+ − 1345
+ − 1346 Adding an asynchronous timeout causes the function to be invoked as soon
+ − 1347 as the timeout occurs, even if XEmacs is in the midst of executing some
+ − 1348 other code. (This is unlike the synchronous timeouts added with
+ − 1349 `add-timeout', where the timeout will only be signalled when XEmacs is
+ − 1350 waiting for events, i.e. the next return to top-level or invocation of
+ − 1351 `sit-for' or related functions.) This means that the function that is
+ − 1352 called *must* not signal an error or change any global state (e.g. switch
+ − 1353 buffers or windows) except when locking code is in place to make sure
+ − 1354 that race conditions don't occur in the interaction between the
+ − 1355 asynchronous timeout function and other code.
+ − 1356
+ − 1357 Under most circumstances, you should use `add-timeout' instead, as it is
+ − 1358 much safer. Asynchronous timeouts should only be used when such behavior
+ − 1359 is really necessary.
+ − 1360
+ − 1361 Asynchronous timeouts are blocked and will not occur when `inhibit-quit'
+ − 1362 is non-nil. As soon as `inhibit-quit' becomes nil again, any pending
+ − 1363 asynchronous timeouts will get called immediately. (Multiple occurrences
+ − 1364 of the same asynchronous timeout are not queued, however.) While the
+ − 1365 callback function of an asynchronous timeout is invoked, `inhibit-quit'
+ − 1366 is automatically bound to non-nil, and thus other asynchronous timeouts
+ − 1367 will be blocked unless the callback function explicitly sets `inhibit-quit'
+ − 1368 to nil.
+ − 1369
+ − 1370 WARNING: if you are thinking of calling `add-async-timeout' from inside of a
+ − 1371 callback function as a way of resignalling a timeout, think again. There
+ − 1372 is a race condition. That's why the RESIGNAL argument exists.
+ − 1373 */
+ − 1374 (secs, function, object, resignal))
+ − 1375 {
+ − 1376 unsigned long msecs = lisp_number_to_milliseconds (secs, 0);
+ − 1377 unsigned long msecs2 = (NILP (resignal) ? 0 :
+ − 1378 lisp_number_to_milliseconds (resignal, 0));
+ − 1379 int id;
+ − 1380 Lisp_Object lid;
+ − 1381 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 1);
+ − 1382 lid = make_int (id);
2500
+ − 1383 if (id != XINT (lid)) ABORT ();
428
+ − 1384 return lid;
+ − 1385 }
+ − 1386
+ − 1387 DEFUN ("disable-async-timeout", Fdisable_async_timeout, 1, 1, 0, /*
+ − 1388 Disable an asynchronous timeout from signalling any more.
+ − 1389 ID should be a timeout id number as returned by `add-async-timeout'. If ID
+ − 1390 corresponds to a one-shot timeout that has already signalled, nothing
+ − 1391 will happen.
+ − 1392
+ − 1393 It will not work to call this function on an id number returned by
+ − 1394 `add-timeout'. Use `disable-timeout' for that.
+ − 1395 */
+ − 1396 (id))
+ − 1397 {
+ − 1398 CHECK_INT (id);
+ − 1399 event_stream_disable_wakeup (XINT (id), 1);
+ − 1400 return Qnil;
+ − 1401 }
+ − 1402
+ − 1403
+ − 1404 /**********************************************************************/
+ − 1405 /* enqueuing and dequeuing events */
+ − 1406 /**********************************************************************/
+ − 1407
+ − 1408 /* Add an event to the back of the command-event queue: it will be the next
+ − 1409 event read after all pending events. This only works on keyboard,
+ − 1410 mouse-click, misc-user, and eval events.
+ − 1411 */
+ − 1412 static void
+ − 1413 enqueue_command_event (Lisp_Object event)
+ − 1414 {
+ − 1415 enqueue_event (event, &command_event_queue, &command_event_queue_tail);
+ − 1416 }
+ − 1417
+ − 1418 static Lisp_Object
+ − 1419 dequeue_command_event (void)
+ − 1420 {
+ − 1421 return dequeue_event (&command_event_queue, &command_event_queue_tail);
+ − 1422 }
+ − 1423
1204
+ − 1424 void
+ − 1425 enqueue_dispatch_event (Lisp_Object event)
+ − 1426 {
+ − 1427 enqueue_event (event, &dispatch_event_queue, &dispatch_event_queue_tail);
+ − 1428 }
+ − 1429
+ − 1430 Lisp_Object
+ − 1431 dequeue_dispatch_event (void)
+ − 1432 {
+ − 1433 return dequeue_event (&dispatch_event_queue, &dispatch_event_queue_tail);
+ − 1434 }
+ − 1435
428
+ − 1436 static void
+ − 1437 enqueue_command_event_1 (Lisp_Object event_to_copy)
+ − 1438 {
853
+ − 1439 enqueue_command_event (Fcopy_event (event_to_copy, Qnil));
428
+ − 1440 }
+ − 1441
+ − 1442 void
+ − 1443 enqueue_magic_eval_event (void (*fun) (Lisp_Object), Lisp_Object object)
+ − 1444 {
+ − 1445 Lisp_Object event = Fmake_event (Qnil, Qnil);
934
+ − 1446 XSET_EVENT_TYPE (event, magic_eval_event);
+ − 1447 /* channel for magic_eval events is nil */
1204
+ − 1448 XSET_EVENT_MAGIC_EVAL_INTERNAL_FUNCTION (event, fun);
+ − 1449 XSET_EVENT_MAGIC_EVAL_OBJECT (event, object);
428
+ − 1450 enqueue_command_event (event);
+ − 1451 }
+ − 1452
+ − 1453 DEFUN ("enqueue-eval-event", Fenqueue_eval_event, 2, 2, 0, /*
+ − 1454 Add an eval event to the back of the eval event queue.
+ − 1455 When this event is dispatched, FUNCTION (which should be a function
+ − 1456 of one argument) will be called with OBJECT as its argument.
+ − 1457 See `next-event' for a description of event types and how events
+ − 1458 are received.
+ − 1459 */
+ − 1460 (function, object))
+ − 1461 {
+ − 1462 Lisp_Object event = Fmake_event (Qnil, Qnil);
+ − 1463
934
+ − 1464 XSET_EVENT_TYPE (event, eval_event);
+ − 1465 /* channel for eval events is nil */
1204
+ − 1466 XSET_EVENT_EVAL_FUNCTION (event, function);
+ − 1467 XSET_EVENT_EVAL_OBJECT (event, object);
428
+ − 1468 enqueue_command_event (event);
+ − 1469
+ − 1470 return event;
+ − 1471 }
+ − 1472
+ − 1473 Lisp_Object
+ − 1474 enqueue_misc_user_event (Lisp_Object channel, Lisp_Object function,
+ − 1475 Lisp_Object object)
+ − 1476 {
+ − 1477 Lisp_Object event = Fmake_event (Qnil, Qnil);
934
+ − 1478 XSET_EVENT_TYPE (event, misc_user_event);
+ − 1479 XSET_EVENT_CHANNEL (event, channel);
1204
+ − 1480 XSET_EVENT_MISC_USER_FUNCTION (event, function);
+ − 1481 XSET_EVENT_MISC_USER_OBJECT (event, object);
+ − 1482 XSET_EVENT_MISC_USER_BUTTON (event, 0);
+ − 1483 XSET_EVENT_MISC_USER_MODIFIERS (event, 0);
+ − 1484 XSET_EVENT_MISC_USER_X (event, -1);
+ − 1485 XSET_EVENT_MISC_USER_Y (event, -1);
428
+ − 1486 enqueue_command_event (event);
+ − 1487
+ − 1488 return event;
+ − 1489 }
+ − 1490
+ − 1491 Lisp_Object
+ − 1492 enqueue_misc_user_event_pos (Lisp_Object channel, Lisp_Object function,
+ − 1493 Lisp_Object object,
+ − 1494 int button, int modifiers, int x, int y)
+ − 1495 {
+ − 1496 Lisp_Object event = Fmake_event (Qnil, Qnil);
+ − 1497
934
+ − 1498 XSET_EVENT_TYPE (event, misc_user_event);
+ − 1499 XSET_EVENT_CHANNEL (event, channel);
1204
+ − 1500 XSET_EVENT_MISC_USER_FUNCTION (event, function);
+ − 1501 XSET_EVENT_MISC_USER_OBJECT (event, object);
+ − 1502 XSET_EVENT_MISC_USER_BUTTON (event, button);
+ − 1503 XSET_EVENT_MISC_USER_MODIFIERS (event, modifiers);
+ − 1504 XSET_EVENT_MISC_USER_X (event, x);
+ − 1505 XSET_EVENT_MISC_USER_Y (event, y);
428
+ − 1506 enqueue_command_event (event);
+ − 1507
+ − 1508 return event;
+ − 1509 }
+ − 1510
+ − 1511
+ − 1512 /**********************************************************************/
+ − 1513 /* focus-event handling */
+ − 1514 /**********************************************************************/
+ − 1515
+ − 1516 /*
+ − 1517
2367
+ − 1518 See also
+ − 1519
+ − 1520 (Info-goto-node "(internals)Focus Handling")
428
+ − 1521 */
+ − 1522
2367
+ − 1523
428
+ − 1524 static void
+ − 1525 run_select_frame_hook (void)
+ − 1526 {
+ − 1527 run_hook (Qselect_frame_hook);
+ − 1528 }
+ − 1529
+ − 1530 static void
+ − 1531 run_deselect_frame_hook (void)
+ − 1532 {
+ − 1533 run_hook (Qdeselect_frame_hook);
+ − 1534 }
+ − 1535
+ − 1536 /* When select-frame is called and focus_follows_mouse is false, we want
+ − 1537 to tell the window system that the focus should be changed to point to
+ − 1538 the new frame. However,
+ − 1539 sometimes Lisp functions will temporarily change the selected frame
+ − 1540 (e.g. to call a function that operates on the selected frame),
+ − 1541 and it's annoying if this focus-change happens exactly when
+ − 1542 select-frame is called, because then you get some flickering of the
+ − 1543 window-manager border and perhaps other undesirable results. We
+ − 1544 really only want to change the focus when we're about to retrieve
+ − 1545 an event from the user. To do this, we keep track of the frame
+ − 1546 where the window-manager focus lies on, and just before waiting
+ − 1547 for user events, check the currently selected frame and change
+ − 1548 the focus as necessary.
+ − 1549
+ − 1550 On the other hand, if focus_follows_mouse is true, we need to switch the
+ − 1551 selected frame back to the frame with window manager focus just before we
+ − 1552 execute the next command in Fcommand_loop_1, just as the selected buffer is
+ − 1553 reverted after a set-buffer.
+ − 1554
+ − 1555 Both cases are handled by this function. It must be called as appropriate
+ − 1556 from these two places, depending on the value of focus_follows_mouse. */
+ − 1557
+ − 1558 void
+ − 1559 investigate_frame_change (void)
+ − 1560 {
+ − 1561 Lisp_Object devcons, concons;
+ − 1562
+ − 1563 /* if the selected frame was changed, change the window-system
+ − 1564 focus to the new frame. We don't do it when select-frame was
+ − 1565 called, to avoid flickering and other unwanted side effects when
+ − 1566 the frame is just changed temporarily. */
+ − 1567 DEVICE_LOOP_NO_BREAK (devcons, concons)
+ − 1568 {
+ − 1569 struct device *d = XDEVICE (XCAR (devcons));
+ − 1570 Lisp_Object sel_frame = DEVICE_SELECTED_FRAME (d);
+ − 1571
+ − 1572 /* You'd think that maybe we should use FRAME_WITH_FOCUS_REAL,
+ − 1573 but that can cause us to end up in an infinite loop focusing
+ − 1574 between two frames. It seems that since the call to `select-frame'
+ − 1575 in emacs_handle_focus_change_final() is based on the _FOR_HOOKS
+ − 1576 value, we need to do so too. */
+ − 1577 if (!NILP (sel_frame) &&
+ − 1578 !EQ (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d), sel_frame) &&
+ − 1579 !NILP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)) &&
+ − 1580 !EQ (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d), sel_frame))
+ − 1581 {
+ − 1582 /* At this point, we know that the frame has been changed. Now, if
+ − 1583 * focus_follows_mouse is not set, we finish off the frame change,
+ − 1584 * so that user events will now come from the new frame. Otherwise,
+ − 1585 * if focus_follows_mouse is set, no gratuitous frame changing
+ − 1586 * should take place. Set the focus back to the frame which was
+ − 1587 * originally selected for user input.
+ − 1588 */
+ − 1589 if (!focus_follows_mouse)
+ − 1590 {
+ − 1591 /* prevent us from issuing the same request more than once */
+ − 1592 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = sel_frame;
+ − 1593 MAYBE_DEVMETH (d, focus_on_frame, (XFRAME (sel_frame)));
+ − 1594 }
+ − 1595 else
+ − 1596 {
+ − 1597 Lisp_Object old_frame = Qnil;
+ − 1598
+ − 1599 /* #### Do we really want to check OUGHT ??
+ − 1600 * It seems to make sense, though I have never seen us
+ − 1601 * get here and have it be non-nil.
+ − 1602 */
+ − 1603 if (FRAMEP (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d)))
+ − 1604 old_frame = DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d);
+ − 1605 else if (FRAMEP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)))
+ − 1606 old_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
+ − 1607
+ − 1608 /* #### Can old_frame ever be NIL? play it safe.. */
+ − 1609 if (!NILP (old_frame))
+ − 1610 {
+ − 1611 /* Fselect_frame is not really the right thing: it frobs the
+ − 1612 * buffer stack. But there's no easy way to do the right
+ − 1613 * thing, and this code already had this problem anyway.
+ − 1614 */
+ − 1615 Fselect_frame (old_frame);
+ − 1616 }
+ − 1617 }
+ − 1618 }
+ − 1619 }
+ − 1620 }
+ − 1621
+ − 1622 static Lisp_Object
+ − 1623 cleanup_after_missed_defocusing (Lisp_Object frame)
+ − 1624 {
+ − 1625 if (FRAMEP (frame) && FRAME_LIVE_P (XFRAME (frame)))
+ − 1626 Fselect_frame (frame);
+ − 1627 return Qnil;
+ − 1628 }
+ − 1629
+ − 1630 void
+ − 1631 emacs_handle_focus_change_preliminary (Lisp_Object frame_inp_and_dev)
+ − 1632 {
+ − 1633 Lisp_Object frame = Fcar (frame_inp_and_dev);
+ − 1634 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev));
+ − 1635 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev)));
+ − 1636 struct device *d;
+ − 1637
+ − 1638 if (!DEVICE_LIVE_P (XDEVICE (device)))
+ − 1639 return;
+ − 1640 else
+ − 1641 d = XDEVICE (device);
+ − 1642
+ − 1643 /* Any received focus-change notifications render invalid any
+ − 1644 pending focus-change requests. */
+ − 1645 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = Qnil;
+ − 1646 if (in_p)
+ − 1647 {
+ − 1648 Lisp_Object focus_frame;
+ − 1649
+ − 1650 if (!FRAME_LIVE_P (XFRAME (frame)))
+ − 1651 return;
+ − 1652 else
+ − 1653 focus_frame = DEVICE_FRAME_WITH_FOCUS_REAL (d);
+ − 1654
+ − 1655 /* Mark the minibuffer as changed to make sure it gets updated
+ − 1656 properly if the echo area is active. */
+ − 1657 {
+ − 1658 struct window *w = XWINDOW (FRAME_MINIBUF_WINDOW (XFRAME (frame)));
+ − 1659 MARK_WINDOWS_CHANGED (w);
+ − 1660 }
+ − 1661
452
+ − 1662 if (FRAMEP (focus_frame) && FRAME_LIVE_P (XFRAME (focus_frame))
+ − 1663 && !EQ (frame, focus_frame))
428
+ − 1664 {
+ − 1665 /* Oops, we missed a focus-out event. */
+ − 1666 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil;
+ − 1667 redisplay_redraw_cursor (XFRAME (focus_frame), 1);
+ − 1668 }
+ − 1669 DEVICE_FRAME_WITH_FOCUS_REAL (d) = frame;
+ − 1670 if (!EQ (frame, focus_frame))
+ − 1671 {
+ − 1672 redisplay_redraw_cursor (XFRAME (frame), 1);
+ − 1673 }
+ − 1674 }
+ − 1675 else
+ − 1676 {
+ − 1677 /* We ignore the frame reported in the event. If it's different
+ − 1678 from where we think the focus was, oh well -- we messed up.
+ − 1679 Nonetheless, we pretend we were right, for sensible behavior. */
+ − 1680 frame = DEVICE_FRAME_WITH_FOCUS_REAL (d);
+ − 1681 if (!NILP (frame))
+ − 1682 {
+ − 1683 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil;
+ − 1684
+ − 1685 if (FRAME_LIVE_P (XFRAME (frame)))
+ − 1686 redisplay_redraw_cursor (XFRAME (frame), 1);
+ − 1687 }
+ − 1688 }
+ − 1689 }
+ − 1690
+ − 1691 /* Called from the window-system-specific code when we receive a
+ − 1692 notification that the focus lies on a particular frame.
+ − 1693 Argument is a cons: (frame . (device . in-p)) where in-p is non-nil
+ − 1694 for focus-in.
+ − 1695 */
+ − 1696 void
+ − 1697 emacs_handle_focus_change_final (Lisp_Object frame_inp_and_dev)
+ − 1698 {
+ − 1699 Lisp_Object frame = Fcar (frame_inp_and_dev);
+ − 1700 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev));
+ − 1701 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev)));
+ − 1702 struct device *d;
+ − 1703 int count;
+ − 1704
+ − 1705 if (!DEVICE_LIVE_P (XDEVICE (device)))
+ − 1706 return;
+ − 1707 else
+ − 1708 d = XDEVICE (device);
+ − 1709
+ − 1710 if (in_p)
+ − 1711 {
+ − 1712 Lisp_Object focus_frame;
+ − 1713
+ − 1714 if (!FRAME_LIVE_P (XFRAME (frame)))
+ − 1715 return;
+ − 1716 else
+ − 1717 focus_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
+ − 1718
+ − 1719 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = frame;
+ − 1720 if (FRAMEP (focus_frame) && !EQ (frame, focus_frame))
+ − 1721 {
+ − 1722 /* Oops, we missed a focus-out event. */
+ − 1723 Fselect_frame (focus_frame);
+ − 1724 /* Do an unwind-protect in case an error occurs in
+ − 1725 the deselect-frame-hook */
+ − 1726 count = specpdl_depth ();
+ − 1727 record_unwind_protect (cleanup_after_missed_defocusing, frame);
+ − 1728 run_deselect_frame_hook ();
771
+ − 1729 unbind_to (count);
428
+ − 1730 /* the cleanup method changed the focus frame to nil, so
+ − 1731 we need to reflect this */
+ − 1732 focus_frame = Qnil;
+ − 1733 }
+ − 1734 else
+ − 1735 Fselect_frame (frame);
+ − 1736 if (!EQ (frame, focus_frame))
+ − 1737 run_select_frame_hook ();
+ − 1738 }
+ − 1739 else
+ − 1740 {
+ − 1741 /* We ignore the frame reported in the event. If it's different
+ − 1742 from where we think the focus was, oh well -- we messed up.
+ − 1743 Nonetheless, we pretend we were right, for sensible behavior. */
+ − 1744 frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d);
+ − 1745 if (!NILP (frame))
+ − 1746 {
+ − 1747 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = Qnil;
+ − 1748 run_deselect_frame_hook ();
+ − 1749 }
+ − 1750 }
+ − 1751 }
+ − 1752
+ − 1753
+ − 1754 /**********************************************************************/
1268
+ − 1755 /* input pending/quit checking */
+ − 1756 /**********************************************************************/
+ − 1757
+ − 1758 /* If HOW_MANY is 0, return true if there are any user or non-user events
+ − 1759 pending. If HOW_MANY is > 0, return true if there are that many *user*
+ − 1760 events pending, irrespective of non-user events. */
+ − 1761
+ − 1762 static int
+ − 1763 event_stream_event_pending_p (int how_many)
+ − 1764 {
+ − 1765 /* #### Hmmm ... There may be some duplication in "drain queue" and
+ − 1766 "event pending". Couldn't we just drain the queue and see what's in
+ − 1767 it, and not maybe need a separate event method for this? Would this
+ − 1768 work when HOW_MANY is 0? Maybe this would be slow? */
+ − 1769 return event_stream && event_stream->event_pending_p (how_many);
+ − 1770 }
+ − 1771
+ − 1772 static void
+ − 1773 event_stream_force_event_pending (struct frame *f)
+ − 1774 {
+ − 1775 if (event_stream->force_event_pending_cb)
+ − 1776 event_stream->force_event_pending_cb (f);
+ − 1777 }
+ − 1778
+ − 1779 void
+ − 1780 event_stream_drain_queue (void)
+ − 1781 {
1318
+ − 1782 /* This can call Lisp */
1268
+ − 1783 if (event_stream && event_stream->drain_queue_cb)
+ − 1784 event_stream->drain_queue_cb ();
+ − 1785 }
+ − 1786
+ − 1787 /* Return non-zero if at least HOW_MANY user events are pending. */
+ − 1788 int
+ − 1789 detect_input_pending (int how_many)
+ − 1790 {
1318
+ − 1791 /* This can call Lisp */
1268
+ − 1792 Lisp_Object event;
+ − 1793
+ − 1794 if (!NILP (Vunread_command_event))
+ − 1795 how_many--;
+ − 1796
+ − 1797 how_many -= XINT (Fsafe_length (Vunread_command_events));
+ − 1798
+ − 1799 if (how_many <= 0)
+ − 1800 return 1;
+ − 1801
+ − 1802 EVENT_CHAIN_LOOP (event, command_event_queue)
+ − 1803 {
+ − 1804 if (XEVENT_TYPE (event) != eval_event
+ − 1805 && XEVENT_TYPE (event) != magic_eval_event)
+ − 1806 {
+ − 1807 how_many--;
+ − 1808 if (how_many <= 0)
+ − 1809 return 1;
+ − 1810 }
+ − 1811 }
+ − 1812
+ − 1813 return event_stream_event_pending_p (how_many);
+ − 1814 }
+ − 1815
+ − 1816 DEFUN ("input-pending-p", Finput_pending_p, 0, 0, 0, /*
+ − 1817 Return t if command input is currently available with no waiting.
+ − 1818 Actually, the value is nil only if we can be sure that no input is available.
+ − 1819 */
+ − 1820 ())
+ − 1821 {
1318
+ − 1822 /* This can call Lisp */
1268
+ − 1823 return detect_input_pending (1) ? Qt : Qnil;
+ − 1824 }
+ − 1825
+ − 1826 static int
+ − 1827 maybe_read_quit_event (Lisp_Event *event)
+ − 1828 {
+ − 1829 /* A C-g that came from `sigint_happened' will always come from the
+ − 1830 controlling terminal. If that doesn't exist, however, then the
+ − 1831 user manually sent us a SIGINT, and we pretend the C-g came from
+ − 1832 the selected console. */
+ − 1833 struct console *con;
+ − 1834
+ − 1835 if (CONSOLEP (Vcontrolling_terminal) &&
+ − 1836 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal)))
+ − 1837 con = XCONSOLE (Vcontrolling_terminal);
+ − 1838 else
+ − 1839 con = XCONSOLE (Fselected_console ());
+ − 1840
+ − 1841 if (sigint_happened)
+ − 1842 {
+ − 1843 sigint_happened = 0;
+ − 1844 Vquit_flag = Qnil;
+ − 1845 Fcopy_event (CONSOLE_QUIT_EVENT (con), wrap_event (event));
+ − 1846 return 1;
+ − 1847 }
+ − 1848 return 0;
+ − 1849 }
+ − 1850
+ − 1851 struct remove_quit_p_data
+ − 1852 {
+ − 1853 int critical;
+ − 1854 };
+ − 1855
+ − 1856 static int
+ − 1857 remove_quit_p_event (Lisp_Object ev, void *the_data)
+ − 1858 {
+ − 1859 struct remove_quit_p_data *data = (struct remove_quit_p_data *) the_data;
+ − 1860 struct console *con = event_console_or_selected (ev);
+ − 1861
+ − 1862 if (XEVENT_TYPE (ev) == key_press_event)
+ − 1863 {
+ − 1864 if (event_matches_key_specifier_p (ev, CONSOLE_QUIT_EVENT (con)))
+ − 1865 return 1;
+ − 1866 if (event_matches_key_specifier_p (ev,
+ − 1867 CONSOLE_CRITICAL_QUIT_EVENT (con)))
+ − 1868 {
+ − 1869 data->critical = 1;
+ − 1870 return 1;
+ − 1871 }
+ − 1872 }
+ − 1873
+ − 1874 return 0;
+ − 1875 }
+ − 1876
+ − 1877 void
+ − 1878 event_stream_quit_p (void)
+ − 1879 {
1318
+ − 1880 /* This can call Lisp */
1268
+ − 1881 struct remove_quit_p_data data;
+ − 1882
+ − 1883 /* Quit checking cannot happen in modal loop. Because it attempts to
+ − 1884 retrieve and dispatch events, it will cause lots of problems if we try
+ − 1885 to do this when already in the process of doing this -- deadlocking
+ − 1886 under Windows, crashes in lwlib etc. under X due to non-reentrant
+ − 1887 code. This is automatically caught, however, in
+ − 1888 event_stream_drain_queue() (checks for in_modal_loop in the
+ − 1889 event-specific code). */
+ − 1890
+ − 1891 /* Drain queue so we can check for pending C-g events. */
+ − 1892 event_stream_drain_queue ();
+ − 1893 data.critical = 0;
+ − 1894
+ − 1895 if (map_event_chain_remove (remove_quit_p_event,
+ − 1896 &dispatch_event_queue,
+ − 1897 &dispatch_event_queue_tail,
+ − 1898 &data, MECR_DEALLOCATE_EVENT))
+ − 1899 Vquit_flag = data.critical ? Qcritical : Qt;
+ − 1900 }
+ − 1901
+ − 1902 Lisp_Object
+ − 1903 event_stream_protect_modal_loop (const char *error_string,
+ − 1904 Lisp_Object (*bfun) (void *barg),
+ − 1905 void *barg, int flags)
+ − 1906 {
+ − 1907 Lisp_Object tmp;
+ − 1908
+ − 1909 ++in_modal_loop;
+ − 1910 tmp = call_trapping_problems (Qevent, error_string, flags, 0, bfun, barg);
+ − 1911 --in_modal_loop;
+ − 1912
+ − 1913 return tmp;
+ − 1914 }
+ − 1915
+ − 1916
+ − 1917 /**********************************************************************/
428
+ − 1918 /* retrieving the next event */
+ − 1919 /**********************************************************************/
+ − 1920
+ − 1921 static int in_single_console;
+ − 1922
+ − 1923 /* #### These functions don't currently do anything. */
+ − 1924 void
+ − 1925 single_console_state (void)
+ − 1926 {
+ − 1927 in_single_console = 1;
+ − 1928 }
+ − 1929
+ − 1930 void
+ − 1931 any_console_state (void)
+ − 1932 {
+ − 1933 in_single_console = 0;
+ − 1934 }
+ − 1935
+ − 1936 int
+ − 1937 in_single_console_state (void)
+ − 1938 {
+ − 1939 return in_single_console;
+ − 1940 }
+ − 1941
1268
+ − 1942 static void
+ − 1943 event_stream_next_event (Lisp_Event *event)
+ − 1944 {
+ − 1945 Lisp_Object event_obj;
+ − 1946
+ − 1947 check_event_stream_ok ();
+ − 1948
+ − 1949 event_obj = wrap_event (event);
+ − 1950 zero_event (event);
+ − 1951 /* SIGINT occurs when C-g was pressed on a TTY. (SIGINT might have
+ − 1952 been sent manually by the user, but we don't care; we treat it
+ − 1953 the same.)
+ − 1954
+ − 1955 The SIGINT signal handler sets Vquit_flag as well as sigint_happened
+ − 1956 and write a byte on our "fake pipe", which unblocks us when we are
+ − 1957 waiting for an event. */
+ − 1958
+ − 1959 /* If SIGINT was received after we disabled quit checking (because
+ − 1960 we want to read C-g's as characters), but before we got a chance
+ − 1961 to start reading, notice it now and treat it as a character to be
+ − 1962 read. If above callers wanted this to be QUIT, they can
+ − 1963 determine this by comparing the event against quit-char. */
+ − 1964
+ − 1965 if (maybe_read_quit_event (event))
+ − 1966 {
+ − 1967 DEBUG_PRINT_EMACS_EVENT ("SIGINT", event_obj);
+ − 1968 return;
+ − 1969 }
+ − 1970
+ − 1971 /* If a longjmp() happens in the callback, we're screwed.
+ − 1972 Let's hope it doesn't. I think the code here is fairly
+ − 1973 clean and doesn't do this. */
+ − 1974 emacs_is_blocking = 1;
+ − 1975 event_stream->next_event_cb (event);
+ − 1976 emacs_is_blocking = 0;
+ − 1977
+ − 1978 /* Now check to see if C-g was pressed while we were blocking.
+ − 1979 We treat it as an event, just like above. */
+ − 1980 if (maybe_read_quit_event (event))
+ − 1981 {
+ − 1982 DEBUG_PRINT_EMACS_EVENT ("SIGINT", event_obj);
+ − 1983 return;
+ − 1984 }
+ − 1985
+ − 1986 #ifdef DEBUG_XEMACS
+ − 1987 /* timeout events have more info set later, so
+ − 1988 print the event out in next_event_internal(). */
+ − 1989 if (event->event_type != timeout_event)
+ − 1990 DEBUG_PRINT_EMACS_EVENT ("real", event_obj);
+ − 1991 #endif
+ − 1992 maybe_kbd_translate (event_obj);
+ − 1993 }
428
+ − 1994
853
+ − 1995 /* Read an event from the window system (or tty). If ALLOW_QUEUED is
+ − 1996 non-zero, read from the command-event queue first.
+ − 1997
+ − 1998 If C-g was pressed, this function will attempt to QUIT. If you want
+ − 1999 to read C-g as an event, wrap this function with a call to
+ − 2000 begin_dont_check_for_quit(), and set Vquit_flag to Qnil just before
+ − 2001 you unbind. In this case, TARGET_EVENT will contain a C-g.
+ − 2002
+ − 2003 Note that even if you are interested in C-g doing QUIT, a caller of you
+ − 2004 might not be.
+ − 2005 */
+ − 2006
428
+ − 2007 static void
+ − 2008 next_event_internal (Lisp_Object target_event, int allow_queued)
+ − 2009 {
+ − 2010 struct gcpro gcpro1;
1292
+ − 2011 PROFILE_DECLARE ();
+ − 2012
853
+ − 2013 QUIT;
428
+ − 2014
1292
+ − 2015 PROFILE_RECORD_ENTERING_SECTION (QSnext_event_internal);
+ − 2016
428
+ − 2017 assert (NILP (XEVENT_NEXT (target_event)));
+ − 2018
+ − 2019 GCPRO1 (target_event);
+ − 2020
+ − 2021 /* When focus_follows_mouse is nil, if a frame change took place, we need
+ − 2022 * to actually switch window manager focus to the selected window now.
+ − 2023 */
+ − 2024 if (!focus_follows_mouse)
+ − 2025 investigate_frame_change ();
+ − 2026
+ − 2027 if (allow_queued && !NILP (command_event_queue))
+ − 2028 {
+ − 2029 Lisp_Object event = dequeue_command_event ();
+ − 2030 Fcopy_event (event, target_event);
+ − 2031 Fdeallocate_event (event);
+ − 2032 DEBUG_PRINT_EMACS_EVENT ("command event queue", target_event);
+ − 2033 }
+ − 2034 else
+ − 2035 {
440
+ − 2036 Lisp_Event *e = XEVENT (target_event);
428
+ − 2037
+ − 2038 /* The command_event_queue was empty. Wait for an event. */
+ − 2039 event_stream_next_event (e);
+ − 2040 /* If this was a timeout, then we need to extract some data
+ − 2041 out of the returned closure and might need to resignal
+ − 2042 it. */
934
+ − 2043 if (EVENT_TYPE (e) == timeout_event)
428
+ − 2044 {
+ − 2045 Lisp_Object tristan, isolde;
+ − 2046
1204
+ − 2047 SET_EVENT_TIMEOUT_ID_NUMBER (e,
+ − 2048 event_stream_resignal_wakeup (EVENT_TIMEOUT_INTERVAL_ID (e), 0, &tristan, &isolde));
+ − 2049
+ − 2050 SET_EVENT_TIMEOUT_FUNCTION (e, tristan);
+ − 2051 SET_EVENT_TIMEOUT_OBJECT (e, isolde);
934
+ − 2052 /* next_event_internal() doesn't print out timeout events
+ − 2053 because of the extra info we just set. */
428
+ − 2054 DEBUG_PRINT_EMACS_EVENT ("real, timeout", target_event);
+ − 2055 }
+ − 2056
853
+ − 2057 /* If we read a ^G, then set quit-flag and try to QUIT.
+ − 2058 This may be blocked (see above).
428
+ − 2059 */
934
+ − 2060 if (EVENT_TYPE (e) == key_press_event &&
428
+ − 2061 event_matches_key_specifier_p
1204
+ − 2062 (target_event, CONSOLE_QUIT_EVENT (XCONSOLE (EVENT_CHANNEL (e)))))
428
+ − 2063 {
+ − 2064 Vquit_flag = Qt;
853
+ − 2065 QUIT;
428
+ − 2066 }
+ − 2067 }
+ − 2068
+ − 2069 UNGCPRO;
1292
+ − 2070
+ − 2071 PROFILE_RECORD_EXITING_SECTION (QSnext_event_internal);
428
+ − 2072 }
+ − 2073
853
+ − 2074 void
428
+ − 2075 run_pre_idle_hook (void)
+ − 2076 {
1318
+ − 2077 /* This can call Lisp */
428
+ − 2078 if (!NILP (Vpre_idle_hook)
1268
+ − 2079 && !detect_input_pending (1))
853
+ − 2080 safe_run_hook_trapping_problems
1333
+ − 2081 (Qredisplay, Qpre_idle_hook,
1268
+ − 2082 /* Quit is inhibited as a result of being within next-event so
+ − 2083 we need to fix that. */
+ − 2084 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION | UNINHIBIT_QUIT);
428
+ − 2085 }
+ − 2086
+ − 2087 DEFUN ("next-event", Fnext_event, 0, 2, 0, /*
+ − 2088 Return the next available event.
+ − 2089 Pass this object to `dispatch-event' to handle it.
+ − 2090 In most cases, you will want to use `next-command-event', which returns
+ − 2091 the next available "user" event (i.e. keypress, button-press,
+ − 2092 button-release, or menu selection) instead of this function.
+ − 2093
+ − 2094 If EVENT is non-nil, it should be an event object and will be filled in
+ − 2095 and returned; otherwise a new event object will be created and returned.
+ − 2096 If PROMPT is non-nil, it should be a string and will be displayed in the
+ − 2097 echo area while this function is waiting for an event.
+ − 2098
+ − 2099 The next available event will be
+ − 2100
+ − 2101 -- any events in `unread-command-events' or `unread-command-event'; else
+ − 2102 -- the next event in the currently executing keyboard macro, if any; else
442
+ − 2103 -- an event queued by `enqueue-eval-event', if any, or any similar event
+ − 2104 queued internally, such as a misc-user event. (For example, when an item
+ − 2105 is selected from a menu or from a `question'-type dialog box, the item's
+ − 2106 callback is not immediately executed, but instead a misc-user event
+ − 2107 is generated and placed onto this queue; when it is dispatched, the
+ − 2108 callback is executed.) Else
428
+ − 2109 -- the next available event from the window system or terminal driver.
+ − 2110
+ − 2111 In the last case, this function will block until an event is available.
+ − 2112
+ − 2113 The returned event will be one of the following types:
+ − 2114
+ − 2115 -- a key-press event.
+ − 2116 -- a button-press or button-release event.
+ − 2117 -- a misc-user-event, meaning the user selected an item on a menu or used
+ − 2118 the scrollbar.
+ − 2119 -- a process event, meaning that output from a subprocess is available.
+ − 2120 -- a timeout event, meaning that a timeout has elapsed.
+ − 2121 -- an eval event, which simply causes a function to be executed when the
+ − 2122 event is dispatched. Eval events are generated by `enqueue-eval-event'
+ − 2123 or by certain other conditions happening.
+ − 2124 -- a magic event, indicating that some window-system-specific event
+ − 2125 happened (such as a focus-change notification) that must be handled
+ − 2126 synchronously with other events. `dispatch-event' knows what to do with
+ − 2127 these events.
+ − 2128 */
+ − 2129 (event, prompt))
+ − 2130 {
+ − 2131 /* This function can call lisp */
+ − 2132 /* #### We start out using the selected console before an event
+ − 2133 is received, for echoing the partially completed command.
+ − 2134 This is most definitely wrong -- there needs to be a separate
+ − 2135 echo area for each console! */
+ − 2136 struct console *con = XCONSOLE (Vselected_console);
+ − 2137 struct command_builder *command_builder =
+ − 2138 XCOMMAND_BUILDER (con->command_builder);
+ − 2139 int store_this_key = 0;
+ − 2140 struct gcpro gcpro1;
853
+ − 2141 int depth;
1292
+ − 2142 PROFILE_DECLARE ();
428
+ − 2143
+ − 2144 GCPRO1 (event);
853
+ − 2145
1268
+ − 2146 /* This is not strictly necessary. Trying to retrieve an event inside of
+ − 2147 a modal loop can cause major problems (see event_stream_quit_p()), but
+ − 2148 the event-specific code knows about this and will make sure we don't
+ − 2149 do anything dangerous. However, if we've gotten here, it's highly
+ − 2150 likely that some code is trying to fetch user events (e.g. in custom
+ − 2151 dialog-box code), and will almost certainly deadlock, so it's probably
+ − 2152 best to error out. #### This could cause problems because there are
+ − 2153 (potentially, at least) legitimate reasons for calling next-event
+ − 2154 inside of a modal loop, in particular if the code is trying to search
+ − 2155 for a timeout event, which will still get retrieved in such a case.
+ − 2156 However, the code to error in such a case has already been present for
+ − 2157 a long time without obvious problems so leaving it in isn't so
1279
+ − 2158 bad.
+ − 2159
+ − 2160 #### I used to conditionalize on in_modal_loop but that fails utterly
+ − 2161 because event-msw.c specifically calls Fnext_event() inside of a modal
+ − 2162 loop to clear the dispatch queue. --ben */
1315
+ − 2163 #ifdef HAVE_MENUBARS
1279
+ − 2164 if (in_menu_callback)
+ − 2165 invalid_operation ("Attempt to call next-event inside menu callback",
1268
+ − 2166 Qunbound);
1315
+ − 2167 #endif /* HAVE_MENUBARS */
1268
+ − 2168
1292
+ − 2169 PROFILE_RECORD_ENTERING_SECTION (Qnext_event);
+ − 2170
853
+ − 2171 depth = begin_dont_check_for_quit ();
428
+ − 2172
+ − 2173 if (NILP (event))
+ − 2174 event = Fmake_event (Qnil, Qnil);
+ − 2175 else
+ − 2176 CHECK_LIVE_EVENT (event);
+ − 2177
+ − 2178 if (!NILP (prompt))
+ − 2179 {
+ − 2180 Bytecount len;
+ − 2181 CHECK_STRING (prompt);
+ − 2182
+ − 2183 len = XSTRING_LENGTH (prompt);
+ − 2184 if (command_builder->echo_buf_length < len)
+ − 2185 len = command_builder->echo_buf_length - 1;
+ − 2186 memcpy (command_builder->echo_buf, XSTRING_DATA (prompt), len);
+ − 2187 command_builder->echo_buf[len] = 0;
+ − 2188 command_builder->echo_buf_index = len;
+ − 2189 echo_area_message (XFRAME (CONSOLE_SELECTED_FRAME (con)),
+ − 2190 command_builder->echo_buf,
+ − 2191 Qnil, 0,
+ − 2192 command_builder->echo_buf_index,
+ − 2193 Qcommand);
+ − 2194 }
+ − 2195
+ − 2196 start_over_and_avoid_hosage:
+ − 2197
+ − 2198 /* If there is something in unread-command-events, simply return it.
+ − 2199 But do some error checking to make sure the user hasn't put something
+ − 2200 in the unread-command-events that they shouldn't have.
+ − 2201 This does not update this-command-keys and recent-keys.
+ − 2202 */
+ − 2203 if (!NILP (Vunread_command_events))
+ − 2204 {
+ − 2205 if (!CONSP (Vunread_command_events))
+ − 2206 {
+ − 2207 Vunread_command_events = Qnil;
563
+ − 2208 signal_error_1 (Qwrong_type_argument,
428
+ − 2209 list3 (Qconsp, Vunread_command_events,
+ − 2210 Qunread_command_events));
+ − 2211 }
+ − 2212 else
+ − 2213 {
+ − 2214 Lisp_Object e = XCAR (Vunread_command_events);
+ − 2215 Vunread_command_events = XCDR (Vunread_command_events);
+ − 2216 if (!EVENTP (e) || !command_event_p (e))
563
+ − 2217 signal_error_1 (Qwrong_type_argument,
428
+ − 2218 list3 (Qcommand_event_p, e, Qunread_command_events));
853
+ − 2219 redisplay_no_pre_idle_hook ();
428
+ − 2220 if (!EQ (e, event))
+ − 2221 Fcopy_event (e, event);
+ − 2222 DEBUG_PRINT_EMACS_EVENT ("unread-command-events", event);
+ − 2223 }
+ − 2224 }
+ − 2225
+ − 2226 /* Do similar for unread-command-event (obsoleteness support). */
+ − 2227 else if (!NILP (Vunread_command_event))
+ − 2228 {
+ − 2229 Lisp_Object e = Vunread_command_event;
+ − 2230 Vunread_command_event = Qnil;
+ − 2231
+ − 2232 if (!EVENTP (e) || !command_event_p (e))
+ − 2233 {
563
+ − 2234 signal_error_1 (Qwrong_type_argument,
428
+ − 2235 list3 (Qeventp, e, Qunread_command_event));
+ − 2236 }
+ − 2237 if (!EQ (e, event))
+ − 2238 Fcopy_event (e, event);
853
+ − 2239 redisplay_no_pre_idle_hook ();
428
+ − 2240 DEBUG_PRINT_EMACS_EVENT ("unread-command-event", event);
+ − 2241 }
+ − 2242
+ − 2243 /* If we're executing a keyboard macro, take the next event from that,
+ − 2244 and update this-command-keys and recent-keys.
+ − 2245 Note that the unread-command-events take precedence over kbd macros.
+ − 2246 */
+ − 2247 else
+ − 2248 {
+ − 2249 if (!NILP (Vexecuting_macro))
+ − 2250 {
853
+ − 2251 redisplay_no_pre_idle_hook ();
428
+ − 2252 pop_kbd_macro_event (event); /* This throws past us at
+ − 2253 end-of-macro. */
+ − 2254 store_this_key = 1;
+ − 2255 DEBUG_PRINT_EMACS_EVENT ("keyboard macro", event);
+ − 2256 }
+ − 2257 /* Otherwise, read a real event, possibly from the
+ − 2258 command_event_queue, and update this-command-keys and
+ − 2259 recent-keys. */
+ − 2260 else
+ − 2261 {
+ − 2262 redisplay ();
+ − 2263 next_event_internal (event, 1);
+ − 2264 store_this_key = 1;
+ − 2265 }
+ − 2266 }
+ − 2267
853
+ − 2268 /* temporarily reenable quit checking here, because arbitrary lisp
+ − 2269 is executed */
+ − 2270 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */
+ − 2271 unbind_to (depth);
428
+ − 2272 status_notify (); /* Notice process change */
853
+ − 2273 depth = begin_dont_check_for_quit ();
428
+ − 2274
+ − 2275 /* Since we can free the most stuff here
+ − 2276 * (since this is typically called from
+ − 2277 * the command-loop top-level). */
851
+ − 2278 if (need_to_check_c_alloca)
+ − 2279 xemacs_c_alloca (0); /* Cause a garbage collection now */
428
+ − 2280
+ − 2281 if (object_dead_p (XEVENT (event)->channel))
+ − 2282 /* event_console_or_selected may crash if the channel is dead.
+ − 2283 Best just to eat it and get the next event. */
+ − 2284 goto start_over_and_avoid_hosage;
+ − 2285
+ − 2286 /* OK, now we can stop the selected-console kludge and use the
+ − 2287 actual console from the event. */
+ − 2288 con = event_console_or_selected (event);
+ − 2289 command_builder = XCOMMAND_BUILDER (con->command_builder);
+ − 2290
+ − 2291 switch (XEVENT_TYPE (event))
+ − 2292 {
+ − 2293 case button_release_event:
+ − 2294 case misc_user_event:
+ − 2295 /* don't echo menu accelerator keys */
+ − 2296 reset_key_echo (command_builder, 1);
+ − 2297 goto EXECUTE_KEY;
+ − 2298 case button_press_event: /* key or mouse input can trigger prompting */
+ − 2299 goto STORE_AND_EXECUTE_KEY;
+ − 2300 case key_press_event: /* any key input can trigger autosave */
+ − 2301 break;
898
+ − 2302 default:
+ − 2303 goto RETURN;
428
+ − 2304 }
+ − 2305
853
+ − 2306 /* temporarily reenable quit checking here, because we could get stuck */
+ − 2307 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */
+ − 2308 unbind_to (depth);
428
+ − 2309 maybe_do_auto_save ();
853
+ − 2310 depth = begin_dont_check_for_quit ();
+ − 2311
428
+ − 2312 num_input_chars++;
+ − 2313 STORE_AND_EXECUTE_KEY:
+ − 2314 if (store_this_key)
+ − 2315 {
+ − 2316 echo_key_event (command_builder, event);
+ − 2317 }
+ − 2318
+ − 2319 EXECUTE_KEY:
+ − 2320 /* Store the last-input-event. The semantics of this is that it is
+ − 2321 the thing most recently returned by next-command-event. It need
+ − 2322 not have come from the keyboard or a keyboard macro, it may have
+ − 2323 come from unread-command-events. It's always a command-event (a
+ − 2324 key, click, or menu selection), never a motion or process event.
+ − 2325 */
+ − 2326 if (!EVENTP (Vlast_input_event))
+ − 2327 Vlast_input_event = Fmake_event (Qnil, Qnil);
+ − 2328 if (XEVENT_TYPE (Vlast_input_event) == dead_event)
+ − 2329 {
+ − 2330 Vlast_input_event = Fmake_event (Qnil, Qnil);
563
+ − 2331 invalid_state ("Someone deallocated last-input-event!", Qunbound);
428
+ − 2332 }
+ − 2333 if (! EQ (event, Vlast_input_event))
+ − 2334 Fcopy_event (event, Vlast_input_event);
+ − 2335
+ − 2336 /* last-input-char and last-input-time are derived from
+ − 2337 last-input-event.
+ − 2338 Note that last-input-char will never have its high-bit set, in an
+ − 2339 effort to sidestep the ambiguity between M-x and oslash.
+ − 2340 */
1204
+ − 2341 Vlast_input_char = Fevent_to_character (Vlast_input_event, Qnil, Qnil, Qnil);
428
+ − 2342 {
+ − 2343 EMACS_TIME t;
+ − 2344 EMACS_GET_TIME (t);
+ − 2345 if (!CONSP (Vlast_input_time))
+ − 2346 Vlast_input_time = Fcons (Qnil, Qnil);
+ − 2347 XCAR (Vlast_input_time) = make_int ((EMACS_SECS (t) >> 16) & 0xffff);
+ − 2348 XCDR (Vlast_input_time) = make_int ((EMACS_SECS (t) >> 0) & 0xffff);
+ − 2349 if (!CONSP (Vlast_command_event_time))
+ − 2350 Vlast_command_event_time = list3 (Qnil, Qnil, Qnil);
+ − 2351 XCAR (Vlast_command_event_time) =
+ − 2352 make_int ((EMACS_SECS (t) >> 16) & 0xffff);
+ − 2353 XCAR (XCDR (Vlast_command_event_time)) =
+ − 2354 make_int ((EMACS_SECS (t) >> 0) & 0xffff);
+ − 2355 XCAR (XCDR (XCDR (Vlast_command_event_time)))
+ − 2356 = make_int (EMACS_USECS (t));
+ − 2357 }
+ − 2358 /* If this key came from the keyboard or from a keyboard macro, then
+ − 2359 it goes into the recent-keys and this-command-keys vectors.
+ − 2360 If this key came from the keyboard, and we're defining a keyboard
+ − 2361 macro, then it goes into the macro.
+ − 2362 */
+ − 2363 if (store_this_key)
+ − 2364 {
479
+ − 2365 if (!is_scrollbar_event (event)) /* #### not quite right, see
+ − 2366 comment in execute_command_event */
+ − 2367 push_this_command_keys (event);
428
+ − 2368 if (!inhibit_input_event_recording)
+ − 2369 push_recent_keys (event);
+ − 2370 dribble_out_event (event);
+ − 2371 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro))
+ − 2372 {
+ − 2373 if (!EVENTP (command_builder->current_events))
+ − 2374 finalize_kbd_macro_chars (con);
+ − 2375 store_kbd_macro_event (event);
+ − 2376 }
+ − 2377 }
853
+ − 2378 /* If this is the help char and there is a help form, then execute
+ − 2379 the help form and swallow this character. Note that
+ − 2380 execute_help_form() calls Fnext_command_event(), which calls this
+ − 2381 function, as well as Fdispatch_event. */
428
+ − 2382 if (!NILP (Vhelp_form) &&
1204
+ − 2383 event_matches_key_specifier_p (event, Vhelp_char))
853
+ − 2384 {
+ − 2385 /* temporarily reenable quit checking here, because we could get stuck */
+ − 2386 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */
+ − 2387 unbind_to (depth);
+ − 2388 execute_help_form (command_builder, event);
+ − 2389 depth = begin_dont_check_for_quit ();
+ − 2390 }
428
+ − 2391
+ − 2392 RETURN:
853
+ − 2393 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */
+ − 2394 unbind_to (depth);
+ − 2395
1292
+ − 2396 PROFILE_RECORD_EXITING_SECTION (Qnext_event);
+ − 2397
428
+ − 2398 UNGCPRO;
853
+ − 2399
428
+ − 2400 return event;
+ − 2401 }
+ − 2402
+ − 2403 DEFUN ("next-command-event", Fnext_command_event, 0, 2, 0, /*
+ − 2404 Return the next available "user" event.
+ − 2405 Pass this object to `dispatch-event' to handle it.
+ − 2406
+ − 2407 If EVENT is non-nil, it should be an event object and will be filled in
+ − 2408 and returned; otherwise a new event object will be created and returned.
+ − 2409 If PROMPT is non-nil, it should be a string and will be displayed in the
+ − 2410 echo area while this function is waiting for an event.
+ − 2411
+ − 2412 The event returned will be a keyboard, mouse press, or mouse release event.
+ − 2413 If there are non-command events available (mouse motion, sub-process output,
+ − 2414 etc) then these will be executed (with `dispatch-event') and discarded. This
+ − 2415 function is provided as a convenience; it is roughly equivalent to the lisp code
+ − 2416
+ − 2417 (while (progn
+ − 2418 (next-event event prompt)
+ − 2419 (not (or (key-press-event-p event)
+ − 2420 (button-press-event-p event)
+ − 2421 (button-release-event-p event)
+ − 2422 (misc-user-event-p event))))
+ − 2423 (dispatch-event event))
+ − 2424
+ − 2425 but it also makes a provision for displaying keystrokes in the echo area.
+ − 2426 */
+ − 2427 (event, prompt))
+ − 2428 {
+ − 2429 /* This function can GC */
+ − 2430 struct gcpro gcpro1;
+ − 2431 GCPRO1 (event);
934
+ − 2432
428
+ − 2433 maybe_echo_keys (XCOMMAND_BUILDER
+ − 2434 (XCONSOLE (Vselected_console)->
+ − 2435 command_builder), 0); /* #### This sucks bigtime */
853
+ − 2436
428
+ − 2437 for (;;)
+ − 2438 {
+ − 2439 event = Fnext_event (event, prompt);
+ − 2440 if (command_event_p (event))
+ − 2441 break;
+ − 2442 else
+ − 2443 execute_internal_event (event);
+ − 2444 }
+ − 2445 UNGCPRO;
+ − 2446 return event;
+ − 2447 }
+ − 2448
442
+ − 2449 DEFUN ("dispatch-non-command-events", Fdispatch_non_command_events, 0, 0, 0, /*
+ − 2450 Dispatch any pending "magic" events.
+ − 2451
+ − 2452 This function is useful for forcing the redisplay of native
+ − 2453 widgets. Normally these are redisplayed through a native window-system
+ − 2454 event encoded as magic event, rather than by the redisplay code. This
+ − 2455 function does not call redisplay or do any of the other things that
+ − 2456 `next-event' does.
+ − 2457 */
+ − 2458 ())
+ − 2459 {
+ − 2460 /* This function can GC */
+ − 2461 Lisp_Object event = Qnil;
+ − 2462 struct gcpro gcpro1;
+ − 2463 GCPRO1 (event);
+ − 2464 event = Fmake_event (Qnil, Qnil);
+ − 2465
+ − 2466 /* Make sure that there will be something in the native event queue
+ − 2467 so that externally managed things (e.g. widgets) get some CPU
+ − 2468 time. */
+ − 2469 event_stream_force_event_pending (selected_frame ());
+ − 2470
+ − 2471 while (event_stream_event_pending_p (0))
+ − 2472 {
+ − 2473 /* We're a generator of the command_event_queue, so we can't be a
+ − 2474 consumer as well. Also, we have no reason to consult the
+ − 2475 command_event_queue; there are only user and eval-events there,
+ − 2476 and we'd just have to put them back anyway.
+ − 2477 */
+ − 2478 next_event_internal (event, 0); /* blocks */
+ − 2479 if (XEVENT_TYPE (event) == magic_event ||
+ − 2480 XEVENT_TYPE (event) == timeout_event ||
+ − 2481 XEVENT_TYPE (event) == process_event ||
+ − 2482 XEVENT_TYPE (event) == pointer_motion_event)
+ − 2483 execute_internal_event (event);
+ − 2484 else
+ − 2485 {
+ − 2486 enqueue_command_event_1 (event);
+ − 2487 break;
+ − 2488 }
+ − 2489 }
+ − 2490
+ − 2491 Fdeallocate_event (event);
+ − 2492 UNGCPRO;
+ − 2493 return Qnil;
+ − 2494 }
+ − 2495
428
+ − 2496 static void
+ − 2497 reset_current_events (struct command_builder *command_builder)
+ − 2498 {
+ − 2499 Lisp_Object event = command_builder->current_events;
+ − 2500 reset_command_builder_event_chain (command_builder);
+ − 2501 if (EVENTP (event))
+ − 2502 deallocate_event_chain (event);
+ − 2503 }
+ − 2504
1268
+ − 2505 static int
2286
+ − 2506 command_event_p_cb (Lisp_Object ev, void *UNUSED (the_data))
1268
+ − 2507 {
+ − 2508 return command_event_p (ev);
+ − 2509 }
+ − 2510
428
+ − 2511 DEFUN ("discard-input", Fdiscard_input, 0, 0, 0, /*
+ − 2512 Discard any pending "user" events.
+ − 2513 Also cancel any kbd macro being defined.
+ − 2514 A user event is a key press, button press, button release, or
+ − 2515 "misc-user" event (menu selection or scrollbar action).
+ − 2516 */
+ − 2517 ())
+ − 2518 {
1318
+ − 2519 /* This can call Lisp */
1268
+ − 2520 Lisp_Object concons;
+ − 2521
+ − 2522 CONSOLE_LOOP (concons)
428
+ − 2523 {
1268
+ − 2524 struct console *con = XCONSOLE (XCAR (concons));
+ − 2525
+ − 2526 /* If a macro was being defined then we have to mark the modeline
+ − 2527 has changed to ensure that it gets updated correctly. */
+ − 2528 if (!NILP (con->defining_kbd_macro))
+ − 2529 MARK_MODELINE_CHANGED;
+ − 2530 con->defining_kbd_macro = Qnil;
+ − 2531 reset_current_events (XCOMMAND_BUILDER (con->command_builder));
428
+ − 2532 }
+ − 2533
1268
+ − 2534 /* This function used to be a lot more complicated. Now, we just
+ − 2535 drain the pending queue and discard all user events from the
+ − 2536 command and dispatch queues. */
+ − 2537 event_stream_drain_queue ();
+ − 2538
+ − 2539 map_event_chain_remove (command_event_p_cb,
+ − 2540 &dispatch_event_queue, &dispatch_event_queue_tail,
+ − 2541 0, MECR_DEALLOCATE_EVENT);
+ − 2542 map_event_chain_remove (command_event_p_cb,
+ − 2543 &command_event_queue, &command_event_queue_tail,
+ − 2544 0, MECR_DEALLOCATE_EVENT);
428
+ − 2545
+ − 2546 return Qnil;
+ − 2547 }
+ − 2548
+ − 2549
+ − 2550 /**********************************************************************/
+ − 2551 /* pausing until an action occurs */
+ − 2552 /**********************************************************************/
+ − 2553
+ − 2554 /* This is used in accept-process-output, sleep-for and sit-for.
+ − 2555 Before running any process_events in these routines, we set
1268
+ − 2556 recursive_sit_for to 1, and use this unwind protect to reset it to
+ − 2557 Qnil upon exit. When recursive_sit_for is 1, calling sit-for will
428
+ − 2558 cause it to return immediately.
+ − 2559
+ − 2560 All of these routines install timeouts, so we clear the installed
+ − 2561 timeout as well.
+ − 2562
+ − 2563 Note: It's very easy to break the desired behaviors of these
+ − 2564 3 routines. If you make any changes to anything in this area, run
+ − 2565 the regression tests at the bottom of the file. -- dmoore */
+ − 2566
+ − 2567
+ − 2568 static Lisp_Object
+ − 2569 sit_for_unwind (Lisp_Object timeout_id)
+ − 2570 {
+ − 2571 if (!NILP(timeout_id))
+ − 2572 Fdisable_timeout (timeout_id);
+ − 2573
1268
+ − 2574 recursive_sit_for = 0;
428
+ − 2575 return Qnil;
+ − 2576 }
+ − 2577
+ − 2578 /* #### Is (accept-process-output nil 3) supposed to be like (sleep-for 3)?
+ − 2579 */
+ − 2580
+ − 2581 DEFUN ("accept-process-output", Faccept_process_output, 0, 3, 0, /*
+ − 2582 Allow any pending output from subprocesses to be read by Emacs.
+ − 2583 It is read into the process' buffers or given to their filter functions.
+ − 2584 Non-nil arg PROCESS means do not return until some output has been received
+ − 2585 from PROCESS. Nil arg PROCESS means do not return until some output has
+ − 2586 been received from any process.
+ − 2587 If the second arg is non-nil, it is the maximum number of seconds to wait:
+ − 2588 this function will return after that much time even if no input has arrived
+ − 2589 from PROCESS. This argument may be a float, meaning wait some fractional
+ − 2590 part of a second.
+ − 2591 If the third arg is non-nil, it is a number of milliseconds that is added
+ − 2592 to the second arg. (This exists only for compatibility.)
+ − 2593 Return non-nil iff we received any output before the timeout expired.
+ − 2594 */
+ − 2595 (process, timeout_secs, timeout_msecs))
+ − 2596 {
+ − 2597 /* This function can GC */
+ − 2598 struct gcpro gcpro1, gcpro2;
+ − 2599 Lisp_Object event = Qnil;
+ − 2600 Lisp_Object result = Qnil;
+ − 2601 int timeout_id = -1;
+ − 2602 int timeout_enabled = 0;
+ − 2603 int done = 0;
+ − 2604 struct buffer *old_buffer = current_buffer;
+ − 2605 int count;
+ − 2606
+ − 2607 /* We preserve the current buffer but nothing else. If a focus
+ − 2608 change alters the selected window then the top level event loop
+ − 2609 will eventually alter current_buffer to match. In the mean time
+ − 2610 we don't want to mess up whatever called this function. */
+ − 2611
+ − 2612 if (!NILP (process))
+ − 2613 CHECK_PROCESS (process);
+ − 2614
+ − 2615 GCPRO2 (event, process);
+ − 2616
+ − 2617 if (!NILP (timeout_secs) || !NILP (timeout_msecs))
+ − 2618 {
+ − 2619 unsigned long msecs = 0;
+ − 2620 if (!NILP (timeout_secs))
+ − 2621 msecs = lisp_number_to_milliseconds (timeout_secs, 1);
+ − 2622 if (!NILP (timeout_msecs))
+ − 2623 {
+ − 2624 CHECK_NATNUM (timeout_msecs);
+ − 2625 msecs += XINT (timeout_msecs);
+ − 2626 }
+ − 2627 if (msecs)
+ − 2628 {
+ − 2629 timeout_id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
+ − 2630 timeout_enabled = 1;
+ − 2631 }
+ − 2632 }
+ − 2633
+ − 2634 event = Fmake_event (Qnil, Qnil);
+ − 2635
+ − 2636 count = specpdl_depth ();
+ − 2637 record_unwind_protect (sit_for_unwind,
+ − 2638 timeout_enabled ? make_int (timeout_id) : Qnil);
1268
+ − 2639 recursive_sit_for = 1;
428
+ − 2640
+ − 2641 while (!done &&
+ − 2642 ((NILP (process) && timeout_enabled) ||
+ − 2643 (NILP (process) && event_stream_event_pending_p (0)) ||
+ − 2644 (!NILP (process))))
+ − 2645 /* Calling detect_input_pending() is the wrong thing here, because
+ − 2646 that considers the Vunread_command_events and command_event_queue.
+ − 2647 We don't need to look at the command_event_queue because we are
+ − 2648 only interested in process events, which don't go on that. In
+ − 2649 fact, we can't read from it anyway, because we put stuff on it.
+ − 2650
+ − 2651 Note that event_stream->event_pending_p must be called in such
+ − 2652 a way that it says whether any events *of any kind* are ready,
+ − 2653 not just user events, or (accept-process-output nil) will fail
+ − 2654 to dispatch any process events that may be on the queue. It is
+ − 2655 not clear to me that this is important, because the top-level
+ − 2656 loop will process it, and I don't think that there is ever a
+ − 2657 time when one calls accept-process-output with a nil argument
+ − 2658 and really need the processes to be handled. */
+ − 2659 {
+ − 2660 /* If our timeout has arrived, we move along. */
+ − 2661 if (timeout_enabled && !event_stream_wakeup_pending_p (timeout_id, 0))
+ − 2662 {
+ − 2663 timeout_enabled = 0;
+ − 2664 done = 1; /* We're done. */
+ − 2665 continue; /* Don't call next_event_internal */
+ − 2666 }
+ − 2667
+ − 2668 next_event_internal (event, 0);
+ − 2669 switch (XEVENT_TYPE (event))
+ − 2670 {
+ − 2671 case process_event:
+ − 2672 {
+ − 2673 if (NILP (process) ||
1204
+ − 2674 EQ (XEVENT_PROCESS_PROCESS (event), process))
428
+ − 2675 {
+ − 2676 done = 1;
+ − 2677 /* RMS's version always returns nil when proc is nil,
+ − 2678 and only returns t if input ever arrived on proc. */
+ − 2679 result = Qt;
+ − 2680 }
+ − 2681
+ − 2682 execute_internal_event (event);
+ − 2683 break;
+ − 2684 }
+ − 2685 case timeout_event:
+ − 2686 /* We execute the event even if it's ours, and notice that it's
+ − 2687 happened above. */
+ − 2688 case pointer_motion_event:
+ − 2689 case magic_event:
+ − 2690 {
+ − 2691 execute_internal_event (event);
+ − 2692 break;
+ − 2693 }
+ − 2694 default:
+ − 2695 {
+ − 2696 enqueue_command_event_1 (event);
+ − 2697 break;
+ − 2698 }
+ − 2699 }
+ − 2700 }
+ − 2701
771
+ − 2702 unbind_to_1 (count, timeout_enabled ? make_int (timeout_id) : Qnil);
428
+ − 2703
+ − 2704 Fdeallocate_event (event);
853
+ − 2705
+ − 2706 status_notify ();
+ − 2707
428
+ − 2708 UNGCPRO;
+ − 2709 current_buffer = old_buffer;
+ − 2710 return result;
+ − 2711 }
+ − 2712
+ − 2713 DEFUN ("sleep-for", Fsleep_for, 1, 1, 0, /*
444
+ − 2714 Pause, without updating display, for SECONDS seconds.
+ − 2715 SECONDS may be a float, allowing pauses for fractional parts of a second.
428
+ − 2716
+ − 2717 It is recommended that you never call sleep-for from inside of a process
444
+ − 2718 filter function or timer event (either synchronous or asynchronous).
428
+ − 2719 */
+ − 2720 (seconds))
+ − 2721 {
+ − 2722 /* This function can GC */
+ − 2723 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1);
+ − 2724 int id;
+ − 2725 Lisp_Object event = Qnil;
+ − 2726 int count;
+ − 2727 struct gcpro gcpro1;
+ − 2728
+ − 2729 GCPRO1 (event);
+ − 2730
+ − 2731 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
+ − 2732 event = Fmake_event (Qnil, Qnil);
+ − 2733
+ − 2734 count = specpdl_depth ();
+ − 2735 record_unwind_protect (sit_for_unwind, make_int (id));
1268
+ − 2736 recursive_sit_for = 1;
428
+ − 2737
+ − 2738 while (1)
+ − 2739 {
+ − 2740 /* If our timeout has arrived, we move along. */
+ − 2741 if (!event_stream_wakeup_pending_p (id, 0))
+ − 2742 goto DONE_LABEL;
+ − 2743
+ − 2744 /* We're a generator of the command_event_queue, so we can't be a
+ − 2745 consumer as well. We don't care about command and eval-events
+ − 2746 anyway.
+ − 2747 */
+ − 2748 next_event_internal (event, 0); /* blocks */
+ − 2749 switch (XEVENT_TYPE (event))
+ − 2750 {
+ − 2751 case timeout_event:
+ − 2752 /* We execute the event even if it's ours, and notice that it's
+ − 2753 happened above. */
+ − 2754 case process_event:
+ − 2755 case pointer_motion_event:
+ − 2756 case magic_event:
+ − 2757 {
+ − 2758 execute_internal_event (event);
+ − 2759 break;
+ − 2760 }
+ − 2761 default:
+ − 2762 {
+ − 2763 enqueue_command_event_1 (event);
+ − 2764 break;
+ − 2765 }
+ − 2766 }
+ − 2767 }
+ − 2768 DONE_LABEL:
771
+ − 2769 unbind_to_1 (count, make_int (id));
428
+ − 2770 Fdeallocate_event (event);
+ − 2771 UNGCPRO;
+ − 2772 return Qnil;
+ − 2773 }
+ − 2774
+ − 2775 DEFUN ("sit-for", Fsit_for, 1, 2, 0, /*
444
+ − 2776 Perform redisplay, then wait SECONDS seconds or until user input is available.
+ − 2777 SECONDS may be a float, meaning a fractional part of a second.
+ − 2778 Optional second arg NODISPLAY non-nil means don't redisplay; just wait.
428
+ − 2779 Redisplay is preempted as always if user input arrives, and does not
+ − 2780 happen if input is available before it starts.
+ − 2781 Value is t if waited the full time with no input arriving.
+ − 2782
+ − 2783 If sit-for is called from within a process filter function or timer
+ − 2784 event (either synchronous or asynchronous) it will return immediately.
+ − 2785 */
+ − 2786 (seconds, nodisplay))
+ − 2787 {
+ − 2788 /* This function can GC */
+ − 2789 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1);
+ − 2790 Lisp_Object event, result;
+ − 2791 struct gcpro gcpro1;
+ − 2792 int id;
+ − 2793 int count;
+ − 2794
+ − 2795 /* The unread-command-events count as pending input */
+ − 2796 if (!NILP (Vunread_command_events) || !NILP (Vunread_command_event))
+ − 2797 return Qnil;
+ − 2798
+ − 2799 /* If the command-builder already has user-input on it (not eval events)
+ − 2800 then that means we're done too.
+ − 2801 */
+ − 2802 if (!NILP (command_event_queue))
+ − 2803 {
+ − 2804 EVENT_CHAIN_LOOP (event, command_event_queue)
+ − 2805 {
+ − 2806 if (command_event_p (event))
+ − 2807 return Qnil;
+ − 2808 }
+ − 2809 }
+ − 2810
+ − 2811 /* If we're in a macro, or noninteractive, or early in temacs, then
+ − 2812 don't wait. */
+ − 2813 if (noninteractive || !NILP (Vexecuting_macro))
+ − 2814 return Qnil;
+ − 2815
+ − 2816 /* Recursive call from a filter function or timeout handler. */
1268
+ − 2817 if (recursive_sit_for)
428
+ − 2818 {
+ − 2819 if (!event_stream_event_pending_p (1) && NILP (nodisplay))
+ − 2820 redisplay ();
+ − 2821 return Qnil;
+ − 2822 }
+ − 2823
+ − 2824
+ − 2825 /* Otherwise, start reading events from the event_stream.
+ − 2826 Do this loop at least once even if (sit-for 0) so that we
+ − 2827 redisplay when no input pending.
+ − 2828 */
+ − 2829 GCPRO1 (event);
+ − 2830 event = Fmake_event (Qnil, Qnil);
+ − 2831
+ − 2832 /* Generate the wakeup even if MSECS is 0, so that existing timeout/etc.
+ − 2833 events get processed. The old (pre-19.12) code special-cased this
+ − 2834 and didn't generate a wakeup, but the resulting behavior was less than
+ − 2835 ideal; viz. the occurrence of (sit-for 0.001) scattered throughout
+ − 2836 the E-Lisp universe. */
+ − 2837
+ − 2838 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0);
+ − 2839
+ − 2840 count = specpdl_depth ();
+ − 2841 record_unwind_protect (sit_for_unwind, make_int (id));
1268
+ − 2842 recursive_sit_for = 1;
428
+ − 2843
+ − 2844 while (1)
+ − 2845 {
+ − 2846 /* If there is no user input pending, then redisplay.
+ − 2847 */
+ − 2848 if (!event_stream_event_pending_p (1) && NILP (nodisplay))
+ − 2849 redisplay ();
+ − 2850
+ − 2851 /* If our timeout has arrived, we move along. */
+ − 2852 if (!event_stream_wakeup_pending_p (id, 0))
+ − 2853 {
+ − 2854 result = Qt;
+ − 2855 goto DONE_LABEL;
+ − 2856 }
+ − 2857
+ − 2858 /* We're a generator of the command_event_queue, so we can't be a
+ − 2859 consumer as well. In fact, we know there's nothing on the
+ − 2860 command_event_queue that we didn't just put there.
+ − 2861 */
+ − 2862 next_event_internal (event, 0); /* blocks */
+ − 2863
+ − 2864 if (command_event_p (event))
+ − 2865 {
+ − 2866 result = Qnil;
+ − 2867 goto DONE_LABEL;
+ − 2868 }
+ − 2869 switch (XEVENT_TYPE (event))
+ − 2870 {
+ − 2871 case eval_event:
+ − 2872 {
+ − 2873 /* eval-events get delayed until later. */
+ − 2874 enqueue_command_event (Fcopy_event (event, Qnil));
+ − 2875 break;
+ − 2876 }
+ − 2877
+ − 2878 case timeout_event:
+ − 2879 /* We execute the event even if it's ours, and notice that it's
+ − 2880 happened above. */
+ − 2881 default:
+ − 2882 {
+ − 2883 execute_internal_event (event);
+ − 2884 break;
+ − 2885 }
+ − 2886 }
+ − 2887 }
+ − 2888
+ − 2889 DONE_LABEL:
771
+ − 2890 unbind_to_1 (count, make_int (id));
428
+ − 2891
+ − 2892 /* Put back the event (if any) that made Fsit_for() exit before the
+ − 2893 timeout. Note that it is being added to the back of the queue, which
+ − 2894 would be inappropriate if there were any user events on the queue
+ − 2895 already: we would be misordering them. But we know that there are
+ − 2896 no user-events on the queue, or else we would not have reached this
+ − 2897 point at all.
+ − 2898 */
+ − 2899 if (NILP (result))
+ − 2900 enqueue_command_event (event);
+ − 2901 else
+ − 2902 Fdeallocate_event (event);
+ − 2903
+ − 2904 UNGCPRO;
+ − 2905 return result;
+ − 2906 }
+ − 2907
442
+ − 2908 /* This handy little function is used by select-x.c to wait for replies
+ − 2909 from processes that aren't really processes (e.g. the X server) */
428
+ − 2910 void
+ − 2911 wait_delaying_user_input (int (*predicate) (void *arg), void *predicate_arg)
+ − 2912 {
+ − 2913 /* This function can GC */
+ − 2914 Lisp_Object event = Fmake_event (Qnil, Qnil);
+ − 2915 struct gcpro gcpro1;
+ − 2916 GCPRO1 (event);
+ − 2917
+ − 2918 while (!(*predicate) (predicate_arg))
+ − 2919 {
+ − 2920 /* We're a generator of the command_event_queue, so we can't be a
+ − 2921 consumer as well. Also, we have no reason to consult the
+ − 2922 command_event_queue; there are only user and eval-events there,
+ − 2923 and we'd just have to put them back anyway.
+ − 2924 */
+ − 2925 next_event_internal (event, 0);
+ − 2926 if (command_event_p (event)
+ − 2927 || (XEVENT_TYPE (event) == eval_event)
+ − 2928 || (XEVENT_TYPE (event) == magic_eval_event))
+ − 2929 enqueue_command_event_1 (event);
+ − 2930 else
+ − 2931 execute_internal_event (event);
+ − 2932 }
+ − 2933 UNGCPRO;
+ − 2934 }
+ − 2935
+ − 2936
+ − 2937 /**********************************************************************/
+ − 2938 /* dispatching events; command builder */
+ − 2939 /**********************************************************************/
+ − 2940
+ − 2941 static void
+ − 2942 execute_internal_event (Lisp_Object event)
+ − 2943 {
1292
+ − 2944 PROFILE_DECLARE ();
+ − 2945
428
+ − 2946 /* events on dead channels get silently eaten */
+ − 2947 if (object_dead_p (XEVENT (event)->channel))
+ − 2948 return;
+ − 2949
1292
+ − 2950 PROFILE_RECORD_ENTERING_SECTION (QSexecute_internal_event);
+ − 2951
428
+ − 2952 /* This function can GC */
+ − 2953 switch (XEVENT_TYPE (event))
+ − 2954 {
+ − 2955 case empty_event:
1292
+ − 2956 goto done;
428
+ − 2957
+ − 2958 case eval_event:
+ − 2959 {
1204
+ − 2960 call1 (XEVENT_EVAL_FUNCTION (event),
+ − 2961 XEVENT_EVAL_OBJECT (event));
1292
+ − 2962 goto done;
428
+ − 2963 }
+ − 2964
+ − 2965 case magic_eval_event:
+ − 2966 {
1204
+ − 2967 XEVENT_MAGIC_EVAL_INTERNAL_FUNCTION (event)
+ − 2968 XEVENT_MAGIC_EVAL_OBJECT (event);
1292
+ − 2969 goto done;
428
+ − 2970 }
+ − 2971
+ − 2972 case pointer_motion_event:
+ − 2973 {
+ − 2974 if (!NILP (Vmouse_motion_handler))
+ − 2975 call1 (Vmouse_motion_handler, event);
1292
+ − 2976 goto done;
428
+ − 2977 }
+ − 2978
+ − 2979 case process_event:
+ − 2980 {
1204
+ − 2981 Lisp_Object p = XEVENT_PROCESS_PROCESS (event);
428
+ − 2982 Charcount readstatus;
853
+ − 2983 int iter;
+ − 2984
+ − 2985 assert (PROCESSP (p));
+ − 2986 for (iter = 0; iter < 2; iter++)
+ − 2987 {
+ − 2988 if (iter == 1 && !process_has_separate_stderr (p))
+ − 2989 break;
+ − 2990 while ((readstatus = read_process_output (p, iter)) > 0)
+ − 2991 ;
+ − 2992 if (readstatus > 0)
+ − 2993 ; /* this clauses never gets executed but
+ − 2994 allows the #ifdefs to work cleanly. */
428
+ − 2995 #ifdef EWOULDBLOCK
853
+ − 2996 else if (readstatus == -1 && errno == EWOULDBLOCK)
+ − 2997 ;
428
+ − 2998 #endif /* EWOULDBLOCK */
+ − 2999 #ifdef EAGAIN
853
+ − 3000 else if (readstatus == -1 && errno == EAGAIN)
+ − 3001 ;
428
+ − 3002 #endif /* EAGAIN */
853
+ − 3003 else if ((readstatus == 0 &&
+ − 3004 /* Note that we cannot distinguish between no input
+ − 3005 available now and a closed pipe.
+ − 3006 With luck, a closed pipe will be accompanied by
+ − 3007 subprocess termination and SIGCHLD. */
+ − 3008 (!network_connection_p (p) ||
+ − 3009 /*
+ − 3010 When connected to ToolTalk (i.e.
+ − 3011 connected_via_filedesc_p()), it's not possible to
+ − 3012 reliably determine whether there is a message
+ − 3013 waiting for ToolTalk to receive. ToolTalk expects
+ − 3014 to have tt_message_receive() called exactly once
+ − 3015 every time the file descriptor becomes active, so
+ − 3016 the filter function forces this by returning 0.
+ − 3017 Emacs must not interpret this as a closed pipe. */
+ − 3018 connected_via_filedesc_p (XPROCESS (p))))
+ − 3019
+ − 3020 /* On some OSs with ptys, when the process on one end of
+ − 3021 a pty exits, the other end gets an error reading with
+ − 3022 errno = EIO instead of getting an EOF (0 bytes read).
+ − 3023 Therefore, if we get an error reading and errno =
+ − 3024 EIO, just continue, because the child process has
+ − 3025 exited and should clean itself up soon (e.g. when we
+ − 3026 get a SIGCHLD). */
535
+ − 3027 #ifdef EIO
853
+ − 3028 || (readstatus == -1 && errno == EIO)
428
+ − 3029 #endif
535
+ − 3030
853
+ − 3031 )
+ − 3032 {
+ − 3033 /* Currently, we rely on SIGCHLD to indicate that the
+ − 3034 process has terminated. Unfortunately, on some systems
+ − 3035 the SIGCHLD gets missed some of the time. So we put an
+ − 3036 additional check in status_notify() to see whether a
+ − 3037 process has terminated. We must tell status_notify()
+ − 3038 to enable that check, and we do so now. */
+ − 3039 kick_status_notify ();
+ − 3040 }
898
+ − 3041 else
+ − 3042 {
+ − 3043 /* Deactivate network connection */
+ − 3044 Lisp_Object status = Fprocess_status (p);
+ − 3045 if (EQ (status, Qopen)
+ − 3046 /* In case somebody changes the theory of whether to
+ − 3047 return open as opposed to run for network connection
+ − 3048 "processes"... */
+ − 3049 || EQ (status, Qrun))
+ − 3050 update_process_status (p, Qexit, 256, 0);
+ − 3051 deactivate_process (p);
+ − 3052 status_notify ();
+ − 3053 }
853
+ − 3054
+ − 3055 /* We must call status_notify here to allow the
+ − 3056 event_stream->unselect_process_cb to be run if appropriate.
+ − 3057 Otherwise, dead fds may be selected for, and we will get a
+ − 3058 continuous stream of process events for them. Since we don't
+ − 3059 return until all process events have been flushed, we would
+ − 3060 get stuck here, processing events on a process whose status
+ − 3061 was 'exit. Call this after dispatch-event, or the fds will
+ − 3062 have been closed before we read the last data from them.
+ − 3063 It's safe for the filter to signal an error because
+ − 3064 status_notify() will be called on return to top-level.
+ − 3065 */
+ − 3066 status_notify ();
428
+ − 3067 }
1292
+ − 3068 goto done;
428
+ − 3069 }
+ − 3070
+ − 3071 case timeout_event:
+ − 3072 {
440
+ − 3073 Lisp_Event *e = XEVENT (event);
934
+ − 3074
1204
+ − 3075 if (!NILP (EVENT_TIMEOUT_FUNCTION (e)))
+ − 3076 call1 (EVENT_TIMEOUT_FUNCTION (e),
+ − 3077 EVENT_TIMEOUT_OBJECT (e));
1292
+ − 3078 goto done;
428
+ − 3079 }
+ − 3080 case magic_event:
+ − 3081 event_stream_handle_magic_event (XEVENT (event));
1292
+ − 3082 goto done;
428
+ − 3083 default:
2500
+ − 3084 ABORT ();
428
+ − 3085 }
1292
+ − 3086
+ − 3087 done:
+ − 3088 PROFILE_RECORD_EXITING_SECTION (QSexecute_internal_event);
428
+ − 3089 }
+ − 3090
+ − 3091
+ − 3092
+ − 3093 static void
+ − 3094 this_command_keys_replace_suffix (Lisp_Object suffix, Lisp_Object chain)
+ − 3095 {
+ − 3096 Lisp_Object first_before_suffix =
+ − 3097 event_chain_find_previous (Vthis_command_keys, suffix);
+ − 3098
+ − 3099 if (NILP (first_before_suffix))
+ − 3100 Vthis_command_keys = chain;
+ − 3101 else
+ − 3102 XSET_EVENT_NEXT (first_before_suffix, chain);
+ − 3103 deallocate_event_chain (suffix);
+ − 3104 Vthis_command_keys_tail = event_chain_tail (chain);
+ − 3105 }
+ − 3106
+ − 3107 static void
+ − 3108 command_builder_replace_suffix (struct command_builder *builder,
+ − 3109 Lisp_Object suffix, Lisp_Object chain)
+ − 3110 {
+ − 3111 Lisp_Object first_before_suffix =
+ − 3112 event_chain_find_previous (builder->current_events, suffix);
+ − 3113
+ − 3114 if (NILP (first_before_suffix))
+ − 3115 builder->current_events = chain;
+ − 3116 else
+ − 3117 XSET_EVENT_NEXT (first_before_suffix, chain);
+ − 3118 deallocate_event_chain (suffix);
+ − 3119 builder->most_current_event = event_chain_tail (chain);
+ − 3120 }
+ − 3121
+ − 3122 static Lisp_Object
+ − 3123 command_builder_find_leaf_1 (struct command_builder *builder)
+ − 3124 {
+ − 3125 Lisp_Object event0 = builder->current_events;
+ − 3126
+ − 3127 if (NILP (event0))
+ − 3128 return Qnil;
+ − 3129
+ − 3130 return event_binding (event0, 1);
+ − 3131 }
+ − 3132
1268
+ − 3133 static void
+ − 3134 maybe_kbd_translate (Lisp_Object event)
+ − 3135 {
+ − 3136 Ichar c;
+ − 3137 int did_translate = 0;
+ − 3138
+ − 3139 if (XEVENT_TYPE (event) != key_press_event)
+ − 3140 return;
+ − 3141 if (!HASH_TABLEP (Vkeyboard_translate_table))
+ − 3142 return;
+ − 3143 if (EQ (Fhash_table_count (Vkeyboard_translate_table), Qzero))
+ − 3144 return;
+ − 3145
+ − 3146 c = event_to_character (event, 0, 0, 0);
+ − 3147 if (c != -1)
+ − 3148 {
+ − 3149 Lisp_Object traduit = Fgethash (make_char (c), Vkeyboard_translate_table,
+ − 3150 Qnil);
+ − 3151 if (!NILP (traduit) && SYMBOLP (traduit))
+ − 3152 {
+ − 3153 XSET_EVENT_KEY_KEYSYM (event, traduit);
+ − 3154 XSET_EVENT_KEY_MODIFIERS (event, 0);
+ − 3155 did_translate = 1;
+ − 3156 }
+ − 3157 else if (CHARP (traduit))
+ − 3158 {
+ − 3159 /* This used to call Fcharacter_to_event() directly into EVENT,
+ − 3160 but that can eradicate timestamps and other such stuff.
+ − 3161 This way is safer. */
+ − 3162 Lisp_Object ev2 = Fmake_event (Qnil, Qnil);
+ − 3163
+ − 3164 character_to_event (XCHAR (traduit), XEVENT (ev2),
+ − 3165 XCONSOLE (XEVENT_CHANNEL (event)), 0, 1);
+ − 3166 XSET_EVENT_KEY_KEYSYM (event, XEVENT_KEY_KEYSYM (ev2));
+ − 3167 XSET_EVENT_KEY_MODIFIERS (event, XEVENT_KEY_MODIFIERS (ev2));
+ − 3168 Fdeallocate_event (ev2);
+ − 3169 did_translate = 1;
+ − 3170 }
+ − 3171 }
+ − 3172
+ − 3173 if (!did_translate)
+ − 3174 {
+ − 3175 Lisp_Object traduit = Fgethash (XEVENT_KEY_KEYSYM (event),
+ − 3176 Vkeyboard_translate_table, Qnil);
+ − 3177 if (!NILP (traduit) && SYMBOLP (traduit))
+ − 3178 {
+ − 3179 XSET_EVENT_KEY_KEYSYM (event, traduit);
+ − 3180 did_translate = 1;
+ − 3181 }
+ − 3182 else if (CHARP (traduit))
+ − 3183 {
+ − 3184 /* This used to call Fcharacter_to_event() directly into EVENT,
+ − 3185 but that can eradicate timestamps and other such stuff.
+ − 3186 This way is safer. */
+ − 3187 Lisp_Object ev2 = Fmake_event (Qnil, Qnil);
+ − 3188
+ − 3189 character_to_event (XCHAR (traduit), XEVENT (ev2),
+ − 3190 XCONSOLE (XEVENT_CHANNEL (event)), 0, 1);
+ − 3191 XSET_EVENT_KEY_KEYSYM (event, XEVENT_KEY_KEYSYM (ev2));
+ − 3192 XSET_EVENT_KEY_MODIFIERS (event,
+ − 3193 XEVENT_KEY_MODIFIERS (event) |
+ − 3194 XEVENT_KEY_MODIFIERS (ev2));
+ − 3195
+ − 3196 Fdeallocate_event (ev2);
+ − 3197 did_translate = 1;
+ − 3198 }
+ − 3199 }
+ − 3200
+ − 3201 #ifdef DEBUG_XEMACS
+ − 3202 if (did_translate)
+ − 3203 DEBUG_PRINT_EMACS_EVENT ("->keyboard-translate-table", event);
+ − 3204 #endif
+ − 3205 }
+ − 3206
428
+ − 3207 /* See if we can do function-key-map or key-translation-map translation
+ − 3208 on the current events in the command builder. If so, do this, and
771
+ − 3209 return the resulting binding, if any.
+ − 3210
+ − 3211 DID_MUNGE must be initialized before calling this function. If munging
+ − 3212 happened, DID_MUNGE will be non-zero; otherwise, it will be left alone.
+ − 3213 */
428
+ − 3214
+ − 3215 static Lisp_Object
+ − 3216 munge_keymap_translate (struct command_builder *builder,
+ − 3217 enum munge_me_out_the_door munge,
771
+ − 3218 int has_normal_binding_p, int *did_munge)
428
+ − 3219 {
+ − 3220 Lisp_Object suffix;
+ − 3221
1204
+ − 3222 EVENT_CHAIN_LOOP (suffix, builder->first_mungeable_event[munge])
428
+ − 3223 {
+ − 3224 Lisp_Object result = munging_key_map_event_binding (suffix, munge);
+ − 3225
+ − 3226 if (NILP (result))
+ − 3227 continue;
+ − 3228
+ − 3229 if (KEYMAPP (result))
+ − 3230 {
+ − 3231 if (NILP (builder->last_non_munged_event)
+ − 3232 && !has_normal_binding_p)
+ − 3233 builder->last_non_munged_event = builder->most_current_event;
+ − 3234 }
+ − 3235 else
+ − 3236 builder->last_non_munged_event = Qnil;
+ − 3237
+ − 3238 if (!KEYMAPP (result) &&
+ − 3239 !VECTORP (result) &&
+ − 3240 !STRINGP (result))
+ − 3241 {
+ − 3242 struct gcpro gcpro1;
+ − 3243 GCPRO1 (suffix);
+ − 3244 result = call1 (result, Qnil);
+ − 3245 UNGCPRO;
+ − 3246 if (NILP (result))
+ − 3247 return Qnil;
+ − 3248 }
+ − 3249
+ − 3250 if (KEYMAPP (result))
+ − 3251 return result;
+ − 3252
+ − 3253 if (VECTORP (result) || STRINGP (result))
+ − 3254 {
+ − 3255 Lisp_Object new_chain = key_sequence_to_event_chain (result);
+ − 3256 Lisp_Object tempev;
+ − 3257
+ − 3258 /* If the first_mungeable_event of the other munger is
+ − 3259 within the events we're munging, then it will point to
+ − 3260 deallocated events afterwards, which is bad -- so make it
+ − 3261 point at the beginning of the munged events. */
+ − 3262 EVENT_CHAIN_LOOP (tempev, suffix)
+ − 3263 {
+ − 3264 Lisp_Object *mungeable_event =
1204
+ − 3265 &builder->first_mungeable_event[1 - munge];
428
+ − 3266 if (EQ (tempev, *mungeable_event))
+ − 3267 {
+ − 3268 *mungeable_event = new_chain;
+ − 3269 break;
+ − 3270 }
+ − 3271 }
+ − 3272
771
+ − 3273 /* Now munge the current event chain in the command builder. */
428
+ − 3274 command_builder_replace_suffix (builder, suffix, new_chain);
1204
+ − 3275 builder->first_mungeable_event[munge] = Qnil;
771
+ − 3276
+ − 3277 *did_munge = 1;
428
+ − 3278
793
+ − 3279 return command_builder_find_leaf_1 (builder);
428
+ − 3280 }
+ − 3281
563
+ − 3282 signal_error (Qinvalid_key_binding,
+ − 3283 (munge == MUNGE_ME_FUNCTION_KEY ?
+ − 3284 "Invalid binding in function-key-map" :
+ − 3285 "Invalid binding in key-translation-map"),
+ − 3286 result);
428
+ − 3287 }
+ − 3288
+ − 3289 return Qnil;
+ − 3290 }
+ − 3291
771
+ − 3292 /* Same as command_builder_find_leaf() below but no Russian C-x
+ − 3293 processing and no defaulting to self-insert-command.
428
+ − 3294 */
771
+ − 3295
428
+ − 3296 static Lisp_Object
771
+ − 3297 command_builder_find_leaf_no_mule_processing (struct command_builder *builder,
+ − 3298 int allow_misc_user_events_p,
+ − 3299 int *did_munge)
428
+ − 3300 {
+ − 3301 /* This function can GC */
+ − 3302 Lisp_Object result;
+ − 3303 Lisp_Object evee = builder->current_events;
+ − 3304
+ − 3305 if (XEVENT_TYPE (evee) == misc_user_event)
+ − 3306 {
+ − 3307 if (allow_misc_user_events_p && (NILP (XEVENT_NEXT (evee))))
1204
+ − 3308 return list2 (XEVENT_EVAL_FUNCTION (evee),
+ − 3309 XEVENT_EVAL_OBJECT (evee));
428
+ − 3310 else
+ − 3311 return Qnil;
+ − 3312 }
+ − 3313
442
+ − 3314 /* if we're currently in a menu accelerator, check there for further
+ − 3315 events */
+ − 3316 /* #### fuck me! who wrote this crap? think "abstraction", baby. */
771
+ − 3317 /* #### this horribly-written crap can mess with global state, which
+ − 3318 this function should not do. i'm not fixing it now. someone
+ − 3319 needs to go and rewrite that shit correctly. --ben */
1268
+ − 3320 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID)
442
+ − 3321 if (x_kludge_lw_menu_active ())
428
+ − 3322 {
+ − 3323 return command_builder_operate_menu_accelerator (builder);
+ − 3324 }
+ − 3325 else
+ − 3326 {
+ − 3327 result = Qnil;
+ − 3328 if (EQ (Vmenu_accelerator_enabled, Qmenu_force))
+ − 3329 result = command_builder_find_menu_accelerator (builder);
+ − 3330 if (NILP (result))
+ − 3331 #endif
+ − 3332 result = command_builder_find_leaf_1 (builder);
1268
+ − 3333 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID)
428
+ − 3334 if (NILP (result)
+ − 3335 && EQ (Vmenu_accelerator_enabled, Qmenu_fallback))
+ − 3336 result = command_builder_find_menu_accelerator (builder);
+ − 3337 }
+ − 3338 #endif
+ − 3339
+ − 3340 /* Check to see if we have a potential function-key-map match. */
+ − 3341 if (NILP (result))
771
+ − 3342 result = munge_keymap_translate (builder, MUNGE_ME_FUNCTION_KEY, 0,
+ − 3343 did_munge);
+ − 3344
428
+ − 3345 /* Check to see if we have a potential key-translation-map match. */
+ − 3346 {
+ − 3347 Lisp_Object key_translate_result =
+ − 3348 munge_keymap_translate (builder, MUNGE_ME_KEY_TRANSLATION,
771
+ − 3349 !NILP (result), did_munge);
428
+ − 3350 if (!NILP (key_translate_result))
771
+ − 3351 result = key_translate_result;
428
+ − 3352 }
+ − 3353
+ − 3354 if (!NILP (result))
+ − 3355 return result;
+ − 3356
+ − 3357 /* If key-sequence wasn't bound, we'll try some fallbacks. */
+ − 3358
+ − 3359 /* If we didn't find a binding, and the last event in the sequence is
+ − 3360 a shifted character, then try again with the lowercase version. */
+ − 3361
+ − 3362 if (XEVENT_TYPE (builder->most_current_event) == key_press_event
+ − 3363 && !NILP (Vretry_undefined_key_binding_unshifted))
+ − 3364 {
1204
+ − 3365 if (event_upshifted_p (builder->most_current_event))
428
+ − 3366 {
771
+ − 3367 Lisp_Object neubauten = copy_command_builder (builder, 0);
+ − 3368 struct command_builder *neub = XCOMMAND_BUILDER (neubauten);
+ − 3369 struct gcpro gcpro1;
+ − 3370
+ − 3371 GCPRO1 (neubauten);
1204
+ − 3372 downshift_event (event_chain_tail (neub->current_events));
771
+ − 3373 result =
+ − 3374 command_builder_find_leaf_no_mule_processing
+ − 3375 (neub, allow_misc_user_events_p, did_munge);
+ − 3376
428
+ − 3377 if (!NILP (result))
771
+ − 3378 {
+ − 3379 copy_command_builder (neub, builder);
+ − 3380 *did_munge = 1;
+ − 3381 }
+ − 3382 free_command_builder (neub);
+ − 3383 UNGCPRO;
+ − 3384 if (!NILP (result))
428
+ − 3385 return result;
+ − 3386 }
+ − 3387 }
+ − 3388
+ − 3389 /* help-char is `auto-bound' in every keymap */
+ − 3390 if (!NILP (Vprefix_help_command) &&
1204
+ − 3391 event_matches_key_specifier_p (builder->most_current_event, Vhelp_char))
428
+ − 3392 return Vprefix_help_command;
+ − 3393
771
+ − 3394 return Qnil;
+ − 3395 }
+ − 3396
+ − 3397 /* Compare the current state of the command builder against the local and
+ − 3398 global keymaps, and return the binding. If there is no match, try again,
+ − 3399 case-insensitively. The return value will be one of:
+ − 3400 -- nil (there is no binding)
+ − 3401 -- a keymap (part of a command has been specified)
+ − 3402 -- a command (anything that satisfies `commandp'; this includes
+ − 3403 some symbols, lists, subrs, strings, vectors, and
+ − 3404 compiled-function objects)
+ − 3405
+ − 3406 This may "munge" the current event chain in the command builder;
+ − 3407 i.e. the sequence might be mutated into a different sequence,
+ − 3408 which we then pretend is what the user actually typed instead of
+ − 3409 the passed-in sequence. This happens as a result of:
+ − 3410
+ − 3411 -- key-translation-map changes
+ − 3412 -- function-key-map changes
+ − 3413 -- retry-undefined-key-binding-unshifted (q.v.)
+ − 3414 -- "Russian C-x problem" changes (see definition of struct key_data,
+ − 3415 events.h)
+ − 3416
+ − 3417 DID_MUNGE must be initialized before calling this function. If munging
+ − 3418 happened, DID_MUNGE will be non-zero; otherwise, it will be left alone.
+ − 3419 */
+ − 3420
+ − 3421 static Lisp_Object
+ − 3422 command_builder_find_leaf (struct command_builder *builder,
+ − 3423 int allow_misc_user_events_p,
+ − 3424 int *did_munge)
+ − 3425 {
+ − 3426 Lisp_Object result =
+ − 3427 command_builder_find_leaf_no_mule_processing
+ − 3428 (builder, allow_misc_user_events_p, did_munge);
+ − 3429
+ − 3430 if (!NILP (result))
+ − 3431 return result;
+ − 3432
+ − 3433 #ifdef MULE
+ − 3434 /* #### Do Russian C-x processing here */
+ − 3435
428
+ − 3436 /* If keysym is a non-ASCII char, bind it to self-insert-char by default. */
+ − 3437 if (XEVENT_TYPE (builder->most_current_event) == key_press_event
+ − 3438 && !NILP (Vcomposed_character_default_binding))
+ − 3439 {
1204
+ − 3440 Lisp_Object keysym = XEVENT_KEY_KEYSYM (builder->most_current_event);
867
+ − 3441 if (CHARP (keysym) && !ichar_ascii_p (XCHAR (keysym)))
428
+ − 3442 return Vcomposed_character_default_binding;
+ − 3443 }
771
+ − 3444 #endif
428
+ − 3445
+ − 3446 return Qnil;
+ − 3447 }
+ − 3448
771
+ − 3449 /* Like command_builder_find_leaf but update this-command-keys and the
+ − 3450 echo area as necessary when the current event chain was munged. */
+ − 3451
+ − 3452 static Lisp_Object
+ − 3453 command_builder_find_leaf_and_update_global_state (struct command_builder *
+ − 3454 builder,
+ − 3455 int
+ − 3456 allow_misc_user_events_p)
+ − 3457 {
+ − 3458 int did_munge = 0;
+ − 3459 int orig_length = event_chain_count (builder->current_events);
+ − 3460 Lisp_Object result = command_builder_find_leaf (builder,
+ − 3461 allow_misc_user_events_p,
+ − 3462 &did_munge);
+ − 3463
+ − 3464 if (did_munge)
+ − 3465 {
+ − 3466 int tck_length = event_chain_count (Vthis_command_keys);
+ − 3467
+ − 3468 /* We just assume that the events we just replaced are
+ − 3469 sitting in copied form at the end of this-command-keys.
+ − 3470 If the user did weird things with `dispatch-event' this
+ − 3471 may not be the case, but at least we make sure we won't
+ − 3472 crash. */
+ − 3473
+ − 3474 if (tck_length >= orig_length)
+ − 3475 {
+ − 3476 Lisp_Object new_chain =
+ − 3477 copy_event_chain (builder->current_events);
+ − 3478 this_command_keys_replace_suffix
+ − 3479 (event_chain_nth (Vthis_command_keys, tck_length - orig_length),
+ − 3480 new_chain);
+ − 3481
+ − 3482 regenerate_echo_keys_from_this_command_keys (builder);
+ − 3483 }
+ − 3484 }
+ − 3485
+ − 3486 if (NILP (result))
+ − 3487 {
+ − 3488 /* If we read extra events attempting to match a function key but end
+ − 3489 up failing, then we release those events back to the command loop
+ − 3490 and fail on the original lookup. The released events will then be
+ − 3491 reprocessed in the context of the first part having failed. */
+ − 3492 if (!NILP (builder->last_non_munged_event))
+ − 3493 {
+ − 3494 Lisp_Object event0 = builder->last_non_munged_event;
+ − 3495
+ − 3496 /* Put the commands back on the event queue. */
+ − 3497 enqueue_event_chain (XEVENT_NEXT (event0),
+ − 3498 &command_event_queue,
+ − 3499 &command_event_queue_tail);
+ − 3500
+ − 3501 /* Then remove them from the command builder. */
+ − 3502 XSET_EVENT_NEXT (event0, Qnil);
+ − 3503 builder->most_current_event = event0;
+ − 3504 builder->last_non_munged_event = Qnil;
+ − 3505 }
+ − 3506 }
+ − 3507
+ − 3508 return result;
+ − 3509 }
428
+ − 3510
+ − 3511 /* Every time a command-event (a key, button, or menu selection) is read by
+ − 3512 Fnext_event(), it is stored in the recent_keys_ring, in Vlast_input_event,
+ − 3513 and in Vthis_command_keys. (Eval-events are not stored there.)
+ − 3514
+ − 3515 Every time a command is invoked, Vlast_command_event is set to the last
+ − 3516 event in the sequence.
+ − 3517
+ − 3518 This means that Vthis_command_keys is really about "input read since the
+ − 3519 last command was executed" rather than about "what keys invoked this
+ − 3520 command." This is a little counterintuitive, but that's the way it
+ − 3521 has always worked.
+ − 3522
+ − 3523 As an extra kink, the function read-key-sequence resets/updates the
+ − 3524 last-command-event and this-command-keys. It doesn't append to the
+ − 3525 command-keys as read-char does. Such are the pitfalls of having to
+ − 3526 maintain compatibility with a program for which the only specification
+ − 3527 is the code itself.
+ − 3528
+ − 3529 (We could implement recent_keys_ring and Vthis_command_keys as the same
+ − 3530 data structure.)
+ − 3531 */
+ − 3532
+ − 3533 DEFUN ("recent-keys", Frecent_keys, 0, 1, 0, /*
+ − 3534 Return a vector of recent keyboard or mouse button events read.
+ − 3535 If NUMBER is non-nil, not more than NUMBER events will be returned.
+ − 3536 Change number of events stored using `set-recent-keys-ring-size'.
+ − 3537
+ − 3538 This copies the event objects into a new vector; it is safe to keep and
+ − 3539 modify them.
+ − 3540 */
+ − 3541 (number))
+ − 3542 {
+ − 3543 struct gcpro gcpro1;
+ − 3544 Lisp_Object val = Qnil;
+ − 3545 int nwanted;
+ − 3546 int start, nkeys, i, j;
+ − 3547 GCPRO1 (val);
+ − 3548
+ − 3549 if (NILP (number))
+ − 3550 nwanted = recent_keys_ring_size;
+ − 3551 else
+ − 3552 {
+ − 3553 CHECK_NATNUM (number);
+ − 3554 nwanted = XINT (number);
+ − 3555 }
+ − 3556
+ − 3557 /* Create the keys ring vector, if none present. */
+ − 3558 if (NILP (Vrecent_keys_ring))
+ − 3559 {
+ − 3560 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil);
+ − 3561 /* And return nothing in particular. */
446
+ − 3562 RETURN_UNGCPRO (make_vector (0, Qnil));
428
+ − 3563 }
+ − 3564
+ − 3565 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index]))
+ − 3566 /* This means the vector has not yet wrapped */
+ − 3567 {
+ − 3568 nkeys = recent_keys_ring_index;
+ − 3569 start = 0;
+ − 3570 }
+ − 3571 else
+ − 3572 {
+ − 3573 nkeys = recent_keys_ring_size;
+ − 3574 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index);
+ − 3575 }
+ − 3576
+ − 3577 if (nwanted < nkeys)
+ − 3578 {
+ − 3579 start += nkeys - nwanted;
+ − 3580 if (start >= recent_keys_ring_size)
+ − 3581 start -= recent_keys_ring_size;
+ − 3582 nkeys = nwanted;
+ − 3583 }
+ − 3584 else
+ − 3585 nwanted = nkeys;
+ − 3586
+ − 3587 val = make_vector (nwanted, Qnil);
+ − 3588
+ − 3589 for (i = 0, j = start; i < nkeys; i++)
+ − 3590 {
+ − 3591 Lisp_Object e = XVECTOR_DATA (Vrecent_keys_ring)[j];
+ − 3592
+ − 3593 if (NILP (e))
2500
+ − 3594 ABORT ();
428
+ − 3595 XVECTOR_DATA (val)[i] = Fcopy_event (e, Qnil);
+ − 3596 if (++j >= recent_keys_ring_size)
+ − 3597 j = 0;
+ − 3598 }
+ − 3599 UNGCPRO;
+ − 3600 return val;
+ − 3601 }
+ − 3602
+ − 3603
+ − 3604 DEFUN ("recent-keys-ring-size", Frecent_keys_ring_size, 0, 0, 0, /*
+ − 3605 The maximum number of events `recent-keys' can return.
+ − 3606 */
+ − 3607 ())
+ − 3608 {
+ − 3609 return make_int (recent_keys_ring_size);
+ − 3610 }
+ − 3611
+ − 3612 DEFUN ("set-recent-keys-ring-size", Fset_recent_keys_ring_size, 1, 1, 0, /*
+ − 3613 Set the maximum number of events to be stored internally.
+ − 3614 */
+ − 3615 (size))
+ − 3616 {
+ − 3617 Lisp_Object new_vector = Qnil;
+ − 3618 int i, j, nkeys, start, min;
+ − 3619 struct gcpro gcpro1;
+ − 3620
+ − 3621 CHECK_INT (size);
+ − 3622 if (XINT (size) <= 0)
563
+ − 3623 invalid_argument ("Recent keys ring size must be positive", size);
428
+ − 3624 if (XINT (size) == recent_keys_ring_size)
+ − 3625 return size;
+ − 3626
446
+ − 3627 GCPRO1 (new_vector);
428
+ − 3628 new_vector = make_vector (XINT (size), Qnil);
+ − 3629
+ − 3630 if (NILP (Vrecent_keys_ring))
+ − 3631 {
+ − 3632 Vrecent_keys_ring = new_vector;
446
+ − 3633 RETURN_UNGCPRO (size);
428
+ − 3634 }
+ − 3635
+ − 3636 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index]))
+ − 3637 /* This means the vector has not yet wrapped */
+ − 3638 {
+ − 3639 nkeys = recent_keys_ring_index;
+ − 3640 start = 0;
+ − 3641 }
+ − 3642 else
+ − 3643 {
+ − 3644 nkeys = recent_keys_ring_size;
+ − 3645 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index);
+ − 3646 }
+ − 3647
+ − 3648 if (XINT (size) > nkeys)
+ − 3649 min = nkeys;
+ − 3650 else
+ − 3651 min = XINT (size);
+ − 3652
+ − 3653 for (i = 0, j = start; i < min; i++)
+ − 3654 {
+ − 3655 XVECTOR_DATA (new_vector)[i] = XVECTOR_DATA (Vrecent_keys_ring)[j];
+ − 3656 if (++j >= recent_keys_ring_size)
+ − 3657 j = 0;
+ − 3658 }
+ − 3659 recent_keys_ring_size = XINT (size);
+ − 3660 recent_keys_ring_index = (i < recent_keys_ring_size) ? i : 0;
+ − 3661
+ − 3662 Vrecent_keys_ring = new_vector;
+ − 3663
+ − 3664 UNGCPRO;
+ − 3665 return size;
+ − 3666 }
+ − 3667
+ − 3668 /* Vthis_command_keys having value Qnil means that the next time
+ − 3669 push_this_command_keys is called, it should start over.
+ − 3670 The times at which the command-keys are reset
+ − 3671 (instead of merely being augmented) are pretty counterintuitive.
+ − 3672 (More specifically:
+ − 3673
+ − 3674 -- We do not reset this-command-keys when we finish reading a
+ − 3675 command. This is because some commands (e.g. C-u) act
+ − 3676 like command prefixes; they signal this by setting prefix-arg
+ − 3677 to non-nil.
+ − 3678 -- Therefore, we reset this-command-keys when we finish
+ − 3679 executing a command, unless prefix-arg is set.
+ − 3680 -- However, if we ever do a non-local exit out of a command
+ − 3681 loop (e.g. an error in a command), we need to reset
+ − 3682 this-command-keys. We do this by calling reset_this_command_keys()
+ − 3683 from cmdloop.c, whenever an error causes an invocation of the
+ − 3684 default error handler, and whenever there's a throw to top-level.)
+ − 3685 */
+ − 3686
+ − 3687 void
+ − 3688 reset_this_command_keys (Lisp_Object console, int clear_echo_area_p)
+ − 3689 {
757
+ − 3690 if (!NILP (console))
+ − 3691 {
+ − 3692 /* console is nil if we just deleted the console as a result of C-x 5
+ − 3693 0. Unfortunately things are currently in a messy situation where
+ − 3694 some stuff is console-local and other stuff isn't, so we need to
+ − 3695 do everything that's not console-local. */
+ − 3696 struct command_builder *command_builder =
+ − 3697 XCOMMAND_BUILDER (XCONSOLE (console)->command_builder);
+ − 3698
+ − 3699 reset_key_echo (command_builder, clear_echo_area_p);
+ − 3700 reset_current_events (command_builder);
+ − 3701 }
+ − 3702 else
+ − 3703 reset_key_echo (0, clear_echo_area_p);
428
+ − 3704
+ − 3705 deallocate_event_chain (Vthis_command_keys);
+ − 3706 Vthis_command_keys = Qnil;
+ − 3707 Vthis_command_keys_tail = Qnil;
+ − 3708 }
+ − 3709
+ − 3710 static void
+ − 3711 push_this_command_keys (Lisp_Object event)
+ − 3712 {
+ − 3713 Lisp_Object new = Fmake_event (Qnil, Qnil);
+ − 3714
+ − 3715 Fcopy_event (event, new);
+ − 3716 enqueue_event (new, &Vthis_command_keys, &Vthis_command_keys_tail);
+ − 3717 }
+ − 3718
+ − 3719 /* The following two functions are used in call-interactively,
+ − 3720 for the @ and e specifications. We used to just use
+ − 3721 `current-mouse-event' (i.e. the last mouse event in this-command-keys),
+ − 3722 but FSF does it more generally so we follow their lead. */
+ − 3723
+ − 3724 Lisp_Object
+ − 3725 extract_this_command_keys_nth_mouse_event (int n)
+ − 3726 {
+ − 3727 Lisp_Object event;
+ − 3728
+ − 3729 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
+ − 3730 {
+ − 3731 if (EVENTP (event)
+ − 3732 && (XEVENT_TYPE (event) == button_press_event
+ − 3733 || XEVENT_TYPE (event) == button_release_event
+ − 3734 || XEVENT_TYPE (event) == misc_user_event))
+ − 3735 {
+ − 3736 if (!n)
+ − 3737 {
2500
+ − 3738 /* must copy to avoid an ABORT() in next_event_internal() */
428
+ − 3739 if (!NILP (XEVENT_NEXT (event)))
+ − 3740 return Fcopy_event (event, Qnil);
+ − 3741 else
+ − 3742 return event;
+ − 3743 }
+ − 3744 n--;
+ − 3745 }
+ − 3746 }
+ − 3747
+ − 3748 return Qnil;
+ − 3749 }
+ − 3750
+ − 3751 Lisp_Object
+ − 3752 extract_vector_nth_mouse_event (Lisp_Object vector, int n)
+ − 3753 {
+ − 3754 int i;
+ − 3755 int len = XVECTOR_LENGTH (vector);
+ − 3756
+ − 3757 for (i = 0; i < len; i++)
+ − 3758 {
+ − 3759 Lisp_Object event = XVECTOR_DATA (vector)[i];
+ − 3760 if (EVENTP (event))
+ − 3761 switch (XEVENT_TYPE (event))
+ − 3762 {
+ − 3763 case button_press_event :
+ − 3764 case button_release_event :
+ − 3765 case misc_user_event :
+ − 3766 if (n == 0)
+ − 3767 return event;
+ − 3768 n--;
+ − 3769 break;
+ − 3770 default:
+ − 3771 continue;
+ − 3772 }
+ − 3773 }
+ − 3774
+ − 3775 return Qnil;
+ − 3776 }
+ − 3777
+ − 3778 static void
+ − 3779 push_recent_keys (Lisp_Object event)
+ − 3780 {
+ − 3781 Lisp_Object e;
+ − 3782
+ − 3783 if (NILP (Vrecent_keys_ring))
+ − 3784 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil);
+ − 3785
+ − 3786 e = XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index];
+ − 3787
+ − 3788 if (NILP (e))
+ − 3789 {
+ − 3790 e = Fmake_event (Qnil, Qnil);
+ − 3791 XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index] = e;
+ − 3792 }
+ − 3793 Fcopy_event (event, e);
+ − 3794 if (++recent_keys_ring_index == recent_keys_ring_size)
+ − 3795 recent_keys_ring_index = 0;
+ − 3796 }
+ − 3797
+ − 3798
+ − 3799 static Lisp_Object
+ − 3800 current_events_into_vector (struct command_builder *command_builder)
+ − 3801 {
+ − 3802 Lisp_Object vector;
+ − 3803 Lisp_Object event;
+ − 3804 int n = event_chain_count (command_builder->current_events);
+ − 3805
+ − 3806 /* Copy the vector and the events in it. */
+ − 3807 /* No need to copy the events, since they're already copies, and
+ − 3808 nobody other than the command-builder has pointers to them */
+ − 3809 vector = make_vector (n, Qnil);
+ − 3810 n = 0;
+ − 3811 EVENT_CHAIN_LOOP (event, command_builder->current_events)
+ − 3812 XVECTOR_DATA (vector)[n++] = event;
+ − 3813 reset_command_builder_event_chain (command_builder);
+ − 3814 return vector;
+ − 3815 }
+ − 3816
+ − 3817
+ − 3818 /*
+ − 3819 Given the current state of the command builder and a new command event
+ − 3820 that has just been dispatched:
+ − 3821
+ − 3822 -- add the event to the event chain forming the current command
+ − 3823 (doing meta-translation as necessary)
+ − 3824 -- return the binding of this event chain; this will be one of:
+ − 3825 -- nil (there is no binding)
+ − 3826 -- a keymap (part of a command has been specified)
+ − 3827 -- a command (anything that satisfies `commandp'; this includes
+ − 3828 some symbols, lists, subrs, strings, vectors, and
+ − 3829 compiled-function objects)
+ − 3830 */
+ − 3831 static Lisp_Object
+ − 3832 lookup_command_event (struct command_builder *command_builder,
+ − 3833 Lisp_Object event, int allow_misc_user_events_p)
+ − 3834 {
+ − 3835 /* This function can GC */
+ − 3836 struct frame *f = selected_frame ();
+ − 3837 /* Clear output from previous command execution */
+ − 3838 if (!EQ (Qcommand, echo_area_status (f))
+ − 3839 /* but don't let mouse-up clear what mouse-down just printed */
+ − 3840 && (XEVENT (event)->event_type != button_release_event))
+ − 3841 clear_echo_area (f, Qnil, 0);
+ − 3842
+ − 3843 /* Add the given event to the command builder.
+ − 3844 Extra hack: this also updates the recent_keys_ring and Vthis_command_keys
+ − 3845 vectors to translate "ESC x" to "M-x" (for any "x" of course).
+ − 3846 */
+ − 3847 {
+ − 3848 Lisp_Object recent = command_builder->most_current_event;
+ − 3849
+ − 3850 if (EVENTP (recent)
1204
+ − 3851 && event_matches_key_specifier_p (recent, Vmeta_prefix_char))
428
+ − 3852 {
440
+ − 3853 Lisp_Event *e;
428
+ − 3854 /* When we see a sequence like "ESC x", pretend we really saw "M-x".
+ − 3855 DoubleThink the recent-keys and this-command-keys as well. */
+ − 3856
+ − 3857 /* Modify the previous most-recently-pushed event on the command
+ − 3858 builder to be a copy of this one with the meta-bit set instead of
+ − 3859 pushing a new event.
+ − 3860 */
+ − 3861 Fcopy_event (event, recent);
+ − 3862 e = XEVENT (recent);
934
+ − 3863 if (EVENT_TYPE (e) == key_press_event)
1204
+ − 3864 SET_EVENT_KEY_MODIFIERS (e, EVENT_KEY_MODIFIERS (e) |
+ − 3865 XEMACS_MOD_META);
934
+ − 3866 else if (EVENT_TYPE (e) == button_press_event
+ − 3867 || EVENT_TYPE (e) == button_release_event)
1204
+ − 3868 SET_EVENT_BUTTON_MODIFIERS (e, EVENT_BUTTON_MODIFIERS (e) |
+ − 3869 XEMACS_MOD_META);
428
+ − 3870 else
2500
+ − 3871 ABORT ();
428
+ − 3872
+ − 3873 {
+ − 3874 int tckn = event_chain_count (Vthis_command_keys);
+ − 3875 if (tckn >= 2)
+ − 3876 /* ??? very strange if it's < 2. */
+ − 3877 this_command_keys_replace_suffix
+ − 3878 (event_chain_nth (Vthis_command_keys, tckn - 2),
+ − 3879 Fcopy_event (recent, Qnil));
+ − 3880 }
+ − 3881
+ − 3882 regenerate_echo_keys_from_this_command_keys (command_builder);
+ − 3883 }
+ − 3884 else
771
+ − 3885 command_builder_append_event (command_builder, event);
428
+ − 3886 }
+ − 3887
+ − 3888 {
771
+ − 3889 Lisp_Object leaf =
+ − 3890 command_builder_find_leaf_and_update_global_state
+ − 3891 (command_builder,
+ − 3892 allow_misc_user_events_p);
428
+ − 3893 struct gcpro gcpro1;
+ − 3894 GCPRO1 (leaf);
+ − 3895
+ − 3896 if (KEYMAPP (leaf))
+ − 3897 {
442
+ − 3898 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID)
+ − 3899 if (!x_kludge_lw_menu_active ())
+ − 3900 #else
+ − 3901 if (1)
+ − 3902 #endif
428
+ − 3903 {
+ − 3904 Lisp_Object prompt = Fkeymap_prompt (leaf, Qt);
+ − 3905 if (STRINGP (prompt))
+ − 3906 {
+ − 3907 /* Append keymap prompt to key echo buffer */
+ − 3908 int buf_index = command_builder->echo_buf_index;
+ − 3909 Bytecount len = XSTRING_LENGTH (prompt);
+ − 3910
+ − 3911 if (len + buf_index + 1 <= command_builder->echo_buf_length)
+ − 3912 {
867
+ − 3913 Ibyte *echo = command_builder->echo_buf + buf_index;
428
+ − 3914 memcpy (echo, XSTRING_DATA (prompt), len);
+ − 3915 echo[len] = 0;
+ − 3916 }
+ − 3917 maybe_echo_keys (command_builder, 1);
+ − 3918 }
+ − 3919 else
+ − 3920 maybe_echo_keys (command_builder, 0);
+ − 3921 }
853
+ − 3922 /* #### i don't trust this at all. --ben */
+ − 3923 #if 0
442
+ − 3924 else if (!NILP (Vquit_flag))
+ − 3925 {
+ − 3926 /* if quit happened during menu acceleration, pretend we read it */
+ − 3927 struct console *con = XCONSOLE (Fselected_console ());
1204
+ − 3928
+ − 3929 enqueue_command_event (Fcopy_event (CONSOLE_QUIT_EVENT (con),
+ − 3930 Qnil));
442
+ − 3931 Vquit_flag = Qnil;
+ − 3932 }
853
+ − 3933 #endif
428
+ − 3934 }
+ − 3935 else if (!NILP (leaf))
+ − 3936 {
+ − 3937 if (EQ (Qcommand, echo_area_status (f))
+ − 3938 && command_builder->echo_buf_index > 0)
+ − 3939 {
+ − 3940 /* If we had been echoing keys, echo the last one (without
+ − 3941 the trailing dash) and redisplay before executing the
+ − 3942 command. */
+ − 3943 command_builder->echo_buf[command_builder->echo_buf_index] = 0;
+ − 3944 maybe_echo_keys (command_builder, 1);
+ − 3945 Fsit_for (Qzero, Qt);
+ − 3946 }
+ − 3947 }
+ − 3948 RETURN_UNGCPRO (leaf);
+ − 3949 }
+ − 3950 }
+ − 3951
479
+ − 3952 static int
+ − 3953 is_scrollbar_event (Lisp_Object event)
+ − 3954 {
516
+ − 3955 #ifdef HAVE_SCROLLBARS
479
+ − 3956 Lisp_Object fun;
+ − 3957
934
+ − 3958 if (XEVENT_TYPE (event) != misc_user_event)
+ − 3959 return 0;
1204
+ − 3960 fun = XEVENT_MISC_USER_FUNCTION (event);
479
+ − 3961
+ − 3962 return (EQ (fun, Qscrollbar_line_up) ||
+ − 3963 EQ (fun, Qscrollbar_line_down) ||
+ − 3964 EQ (fun, Qscrollbar_page_up) ||
+ − 3965 EQ (fun, Qscrollbar_page_down) ||
+ − 3966 EQ (fun, Qscrollbar_to_top) ||
+ − 3967 EQ (fun, Qscrollbar_to_bottom) ||
+ − 3968 EQ (fun, Qscrollbar_vertical_drag) ||
+ − 3969 EQ (fun, Qscrollbar_char_left) ||
+ − 3970 EQ (fun, Qscrollbar_char_right) ||
+ − 3971 EQ (fun, Qscrollbar_page_left) ||
+ − 3972 EQ (fun, Qscrollbar_page_right) ||
+ − 3973 EQ (fun, Qscrollbar_to_left) ||
+ − 3974 EQ (fun, Qscrollbar_to_right) ||
+ − 3975 EQ (fun, Qscrollbar_horizontal_drag));
516
+ − 3976 #else
+ − 3977 return 0;
+ − 3978 #endif /* HAVE_SCROLLBARS */
479
+ − 3979 }
+ − 3980
428
+ − 3981 static void
+ − 3982 execute_command_event (struct command_builder *command_builder,
+ − 3983 Lisp_Object event)
+ − 3984 {
+ − 3985 /* This function can GC */
+ − 3986 struct console *con = XCONSOLE (command_builder->console);
+ − 3987 struct gcpro gcpro1;
+ − 3988
+ − 3989 GCPRO1 (event); /* event may be freshly created */
444
+ − 3990
479
+ − 3991 /* #### This call to is_scrollbar_event() isn't quite right, but
+ − 3992 fixing properly it requires more work than can go into 21.4.
+ − 3993 (We really need to split out menu, scrollbar, dialog, and other
+ − 3994 types of events from misc-user, and put the remaining ones in a
+ − 3995 new `user-eval' type that behaves like an eval event but is a
+ − 3996 user event and thus has all of its semantics -- e.g. being
+ − 3997 delayed during `accept-process-output' and similar wait states.)
+ − 3998
+ − 3999 The real issue here is that "user events" and "command events"
+ − 4000 are not the same thing, but are very much confused in
+ − 4001 event-stream.c. User events are, essentially, any event that
+ − 4002 should be delayed by accept-process-output, should terminate a
+ − 4003 sit-for, etc. -- basically, any event that needs to be processed
+ − 4004 synchronously with key and mouse events. Command events are
+ − 4005 those that participate in command building; scrollbar events
+ − 4006 clearly don't belong because they should be transparent in a
+ − 4007 sequence like C-x @ h <scrollbar-drag> x, which used to cause a
+ − 4008 crash before checks similar to the is_scrollbar_event() call were
+ − 4009 added. Do other events belong with scrollbar events? I'm not
+ − 4010 sure; we need to categorize all misc-user events and see what
+ − 4011 their semantics are.
+ − 4012
+ − 4013 (You might ask, why do scrollbar events need to be user events?
+ − 4014 That's a good question. The answer seems to be that they can
+ − 4015 change point, and having this happen asynchronously would be a
+ − 4016 very bad idea. According to the "proper" functioning of
+ − 4017 scrollbars, this should not happen, but XEmacs does not allow
+ − 4018 point to go outside of the window.)
+ − 4019
+ − 4020 Scrollbar events and similar non-command events should obviously
+ − 4021 not be recorded in this-command-keys, so we need to check for
+ − 4022 this in next-event.
+ − 4023
+ − 4024 #### We call reset_current_events() twice in this function --
+ − 4025 #### here, and later as a result of reset_this_command_keys().
+ − 4026 #### This is almost certainly wrong; need to figure out what's
+ − 4027 #### correct.
+ − 4028
+ − 4029 #### We need to figure out what's really correct w.r.t. scrollbar
+ − 4030 #### events. With these new fixes in, it actually works to do
+ − 4031 #### C-x <scrollbar-drag> 5 2, but the key echo gets messed up
+ − 4032 #### (starts over at 5). We really need to be special-casing
+ − 4033 #### scrollbar events at a lower level, and not really passing
+ − 4034 #### them through the command builder at all. (e.g. do scrollbar
+ − 4035 #### events belong in macros??? doubtful; probably only the
+ − 4036 #### point movement, if any, belongs, special-cased as a
+ − 4037 #### pseudo-issued M-x goto-char command). #### Need more work
+ − 4038 #### here. Do this when separating out scrollbar events.
+ − 4039 */
+ − 4040
+ − 4041 if (!is_scrollbar_event (event))
444
+ − 4042 reset_current_events (command_builder);
428
+ − 4043
+ − 4044 switch (XEVENT (event)->event_type)
+ − 4045 {
+ − 4046 case key_press_event:
+ − 4047 Vcurrent_mouse_event = Qnil;
+ − 4048 break;
+ − 4049 case button_press_event:
+ − 4050 case button_release_event:
+ − 4051 case misc_user_event:
+ − 4052 Vcurrent_mouse_event = Fcopy_event (event, Qnil);
+ − 4053 break;
+ − 4054 default: break;
+ − 4055 }
+ − 4056
+ − 4057 /* Store the last-command-event. The semantics of this is that it
+ − 4058 is the last event most recently involved in command-lookup. */
+ − 4059 if (!EVENTP (Vlast_command_event))
+ − 4060 Vlast_command_event = Fmake_event (Qnil, Qnil);
+ − 4061 if (XEVENT (Vlast_command_event)->event_type == dead_event)
+ − 4062 {
+ − 4063 Vlast_command_event = Fmake_event (Qnil, Qnil);
563
+ − 4064 invalid_state ("Someone deallocated the last-command-event!", Qunbound);
428
+ − 4065 }
+ − 4066
+ − 4067 if (! EQ (event, Vlast_command_event))
+ − 4068 Fcopy_event (event, Vlast_command_event);
+ − 4069
+ − 4070 /* Note that last-command-char will never have its high-bit set, in
+ − 4071 an effort to sidestep the ambiguity between M-x and oslash. */
+ − 4072 Vlast_command_char = Fevent_to_character (Vlast_command_event,
+ − 4073 Qnil, Qnil, Qnil);
+ − 4074
+ − 4075 /* Actually call the command, with all sorts of hair to preserve or clear
+ − 4076 the echo-area and region as appropriate and call the pre- and post-
+ − 4077 command-hooks. */
+ − 4078 {
+ − 4079 int old_kbd_macro = con->kbd_macro_end;
+ − 4080 struct window *w = XWINDOW (Fselected_window (Qnil));
+ − 4081
+ − 4082 /* We're executing a new command, so the old value is irrelevant. */
+ − 4083 zmacs_region_stays = 0;
+ − 4084
+ − 4085 /* If the previous command tried to force a specific window-start,
+ − 4086 reset the flag in case this command moves point far away from
+ − 4087 that position. Also, reset the window's buffer's change
+ − 4088 information so that we don't trigger an incremental update. */
+ − 4089 if (w->force_start)
+ − 4090 {
+ − 4091 w->force_start = 0;
+ − 4092 buffer_reset_changes (XBUFFER (w->buffer));
+ − 4093 }
+ − 4094
+ − 4095 pre_command_hook ();
+ − 4096
934
+ − 4097 if (XEVENT_TYPE (event) == misc_user_event)
+ − 4098 {
1204
+ − 4099 call1 (XEVENT_MISC_USER_FUNCTION (event),
+ − 4100 XEVENT_MISC_USER_OBJECT (event));
934
+ − 4101 }
428
+ − 4102 else
+ − 4103 {
+ − 4104 Fcommand_execute (Vthis_command, Qnil, Qnil);
+ − 4105 }
+ − 4106
+ − 4107 post_command_hook ();
+ − 4108
757
+ − 4109 /* Console might have been deleted by command */
+ − 4110 if (CONSOLE_LIVE_P (con) && !NILP (con->prefix_arg))
428
+ − 4111 {
+ − 4112 /* Commands that set the prefix arg don't update last-command, don't
+ − 4113 reset the echoing state, and don't go into keyboard macros unless
444
+ − 4114 followed by another command. Also don't quit here. */
+ − 4115 int speccount = specpdl_depth ();
+ − 4116 specbind (Qinhibit_quit, Qt);
428
+ − 4117 maybe_echo_keys (command_builder, 0);
771
+ − 4118 unbind_to (speccount);
428
+ − 4119
+ − 4120 /* If we're recording a keyboard macro, and the last command
+ − 4121 executed set a prefix argument, then decrement the pointer to
+ − 4122 the "last character really in the macro" to be just before this
+ − 4123 command. This is so that the ^U in "^U ^X )" doesn't go onto
+ − 4124 the end of macro. */
+ − 4125 if (!NILP (con->defining_kbd_macro))
+ − 4126 con->kbd_macro_end = old_kbd_macro;
+ − 4127 }
+ − 4128 else
+ − 4129 {
+ − 4130 /* Start a new command next time */
+ − 4131 Vlast_command = Vthis_command;
442
+ − 4132 Vlast_command_properties = Vthis_command_properties;
+ − 4133 Vthis_command_properties = Qnil;
+ − 4134
428
+ − 4135 /* Emacs 18 doesn't unconditionally clear the echoed keystrokes,
+ − 4136 so we don't either */
479
+ − 4137
+ − 4138 if (!is_scrollbar_event (event))
771
+ − 4139 reset_this_command_keys (CONSOLE_LIVE_P (con) ? wrap_console (con)
757
+ − 4140 : Qnil, 0);
428
+ − 4141 }
+ − 4142 }
+ − 4143
+ − 4144 UNGCPRO;
+ − 4145 }
+ − 4146
+ − 4147 /* Run the pre command hook. */
+ − 4148
+ − 4149 static void
+ − 4150 pre_command_hook (void)
+ − 4151 {
+ − 4152 last_point_position = BUF_PT (current_buffer);
793
+ − 4153 last_point_position_buffer = wrap_buffer (current_buffer);
428
+ − 4154 /* This function can GC */
853
+ − 4155 safe_run_hook_trapping_problems
1333
+ − 4156 (Qcommand, Qpre_command_hook,
+ − 4157 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION);
442
+ − 4158
+ − 4159 /* This is a kludge, but necessary; see simple.el */
+ − 4160 call0 (Qhandle_pre_motion_command);
428
+ − 4161 }
+ − 4162
+ − 4163 /* Run the post command hook. */
+ − 4164
+ − 4165 static void
+ − 4166 post_command_hook (void)
+ − 4167 {
+ − 4168 /* This function can GC */
+ − 4169 /* Turn off region highlighting unless this command requested that
+ − 4170 it be left on, or we're in the minibuffer. We don't turn it off
+ − 4171 when we're in the minibuffer so that things like M-x write-region
+ − 4172 still work!
+ − 4173
+ − 4174 This could be done via a function on the post-command-hook, but
+ − 4175 we don't want the user to accidentally remove it.
+ − 4176 */
+ − 4177
+ − 4178 Lisp_Object win = Fselected_window (Qnil);
+ − 4179
+ − 4180 /* If the last command deleted the frame, `win' might be nil.
+ − 4181 It seems safest to do nothing in this case. */
442
+ − 4182 /* Note: Someone added the following comment and put #if 0's around
+ − 4183 this code, not realizing that doing this invites a crash in the
+ − 4184 line after. */
440
+ − 4185 /* #### This doesn't really fix the problem,
428
+ − 4186 if delete-frame is called by some hook */
+ − 4187 if (NILP (win))
+ − 4188 return;
442
+ − 4189
+ − 4190 /* This is a kludge, but necessary; see simple.el */
+ − 4191 call0 (Qhandle_post_motion_command);
428
+ − 4192
+ − 4193 if (! zmacs_region_stays
+ − 4194 && (!MINI_WINDOW_P (XWINDOW (win))
+ − 4195 || EQ (zmacs_region_buffer (), WINDOW_BUFFER (XWINDOW (win)))))
+ − 4196 zmacs_deactivate_region ();
+ − 4197 else
+ − 4198 zmacs_update_region ();
+ − 4199
853
+ − 4200 safe_run_hook_trapping_problems
1333
+ − 4201 (Qcommand, Qpost_command_hook,
853
+ − 4202 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION);
+ − 4203
+ − 4204 #if 0 /* FSF Emacs */
+ − 4205 if (!NILP (current_buffer->mark_active))
+ − 4206 {
+ − 4207 if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode))
+ − 4208 {
+ − 4209 current_buffer->mark_active = Qnil;
+ − 4210 run_hook (intern ("deactivate-mark-hook"));
+ − 4211 }
+ − 4212 else if (current_buffer != prev_buffer ||
+ − 4213 BUF_MODIFF (current_buffer) != prev_modiff)
+ − 4214 run_hook (intern ("activate-mark-hook"));
+ − 4215 }
+ − 4216 #endif /* FSF Emacs */
428
+ − 4217
+ − 4218 /* #### Kludge!!! This is necessary to make sure that things
+ − 4219 are properly positioned even if post-command-hook moves point.
+ − 4220 #### There should be a cleaner way of handling this. */
+ − 4221 call0 (Qauto_show_make_point_visible);
+ − 4222 }
+ − 4223
+ − 4224
+ − 4225 DEFUN ("dispatch-event", Fdispatch_event, 1, 1, 0, /*
444
+ − 4226 Given an event object EVENT as returned by `next-event', execute it.
428
+ − 4227
+ − 4228 Key-press, button-press, and button-release events get accumulated
+ − 4229 until a complete key sequence (see `read-key-sequence') is reached,
+ − 4230 at which point the sequence is looked up in the current keymaps and
+ − 4231 acted upon.
+ − 4232
+ − 4233 Mouse motion events cause the low-level handling function stored in
+ − 4234 `mouse-motion-handler' to be called. (There are very few circumstances
+ − 4235 under which you should change this handler. Use `mode-motion-hook'
+ − 4236 instead.)
+ − 4237
+ − 4238 Menu, timeout, and eval events cause the associated function or handler
+ − 4239 to be called.
+ − 4240
+ − 4241 Process events cause the subprocess's output to be read and acted upon
+ − 4242 appropriately (see `start-process').
+ − 4243
+ − 4244 Magic events are handled as necessary.
+ − 4245 */
+ − 4246 (event))
+ − 4247 {
+ − 4248 /* This function can GC */
+ − 4249 struct command_builder *command_builder;
440
+ − 4250 Lisp_Event *ev;
428
+ − 4251 Lisp_Object console;
+ − 4252 Lisp_Object channel;
1292
+ − 4253 PROFILE_DECLARE ();
428
+ − 4254
+ − 4255 CHECK_LIVE_EVENT (event);
+ − 4256 ev = XEVENT (event);
+ − 4257
+ − 4258 /* events on dead channels get silently eaten */
+ − 4259 channel = EVENT_CHANNEL (ev);
+ − 4260 if (object_dead_p (channel))
+ − 4261 return Qnil;
+ − 4262
1292
+ − 4263 PROFILE_RECORD_ENTERING_SECTION (Qdispatch_event);
+ − 4264
428
+ − 4265 /* Some events don't have channels (e.g. eval events). */
+ − 4266 console = CDFW_CONSOLE (channel);
+ − 4267 if (NILP (console))
+ − 4268 console = Vselected_console;
+ − 4269 else if (!EQ (console, Vselected_console))
+ − 4270 Fselect_console (console);
+ − 4271
+ − 4272 command_builder = XCOMMAND_BUILDER (XCONSOLE (console)->command_builder);
934
+ − 4273 switch (XEVENT_TYPE (event))
428
+ − 4274 {
+ − 4275 case button_press_event:
+ − 4276 case button_release_event:
+ − 4277 case key_press_event:
+ − 4278 {
+ − 4279 Lisp_Object leaf = lookup_command_event (command_builder, event, 1);
+ − 4280
+ − 4281 if (KEYMAPP (leaf))
+ − 4282 /* Incomplete key sequence */
+ − 4283 break;
+ − 4284 if (NILP (leaf))
+ − 4285 {
+ − 4286 /* At this point, we know that the sequence is not bound to a
+ − 4287 command. Normally, we beep and print a message informing the
+ − 4288 user of this. But we do not beep or print a message when:
+ − 4289
+ − 4290 o the last event in this sequence is a mouse-up event; or
+ − 4291 o the last event in this sequence is a mouse-down event and
+ − 4292 there is a binding for the mouse-up version.
+ − 4293
+ − 4294 That is, if the sequence ``C-x button1'' is typed, and is not
+ − 4295 bound to a command, but the sequence ``C-x button1up'' is bound
+ − 4296 to a command, we do not complain about the ``C-x button1''
+ − 4297 sequence. If neither ``C-x button1'' nor ``C-x button1up'' is
+ − 4298 bound to a command, then we complain about the ``C-x button1''
+ − 4299 sequence, but later will *not* complain about the
+ − 4300 ``C-x button1up'' sequence, which would be redundant.
+ − 4301
+ − 4302 This is pretty hairy, but I think it's the most intuitive
+ − 4303 behavior.
+ − 4304 */
+ − 4305 Lisp_Object terminal = command_builder->most_current_event;
+ − 4306
+ − 4307 if (XEVENT_TYPE (terminal) == button_press_event)
+ − 4308 {
+ − 4309 int no_bitching;
+ − 4310 /* Temporarily pretend the last event was an "up" instead of a
+ − 4311 "down", and look up its binding. */
+ − 4312 XEVENT_TYPE (terminal) = button_release_event;
+ − 4313 /* If the "up" version is bound, don't complain. */
+ − 4314 no_bitching
771
+ − 4315 = !NILP (command_builder_find_leaf_and_update_global_state
+ − 4316 (command_builder, 0));
428
+ − 4317 /* Undo the temporary changes we just made. */
+ − 4318 XEVENT_TYPE (terminal) = button_press_event;
+ − 4319 if (no_bitching)
+ − 4320 {
+ − 4321 /* Pretend this press was not seen (treat as a prefix) */
+ − 4322 if (EQ (command_builder->current_events, terminal))
+ − 4323 {
+ − 4324 reset_current_events (command_builder);
+ − 4325 }
+ − 4326 else
+ − 4327 {
+ − 4328 Lisp_Object eve;
+ − 4329
+ − 4330 EVENT_CHAIN_LOOP (eve, command_builder->current_events)
+ − 4331 if (EQ (XEVENT_NEXT (eve), terminal))
+ − 4332 break;
+ − 4333
+ − 4334 Fdeallocate_event (command_builder->
+ − 4335 most_current_event);
+ − 4336 XSET_EVENT_NEXT (eve, Qnil);
+ − 4337 command_builder->most_current_event = eve;
+ − 4338 }
+ − 4339 maybe_echo_keys (command_builder, 1);
+ − 4340 break;
+ − 4341 }
+ − 4342 }
+ − 4343
+ − 4344 /* Complain that the typed sequence is not defined, if this is the
+ − 4345 kind of sequence that warrants a complaint. */
+ − 4346 XCONSOLE (console)->defining_kbd_macro = Qnil;
+ − 4347 XCONSOLE (console)->prefix_arg = Qnil;
+ − 4348 /* Don't complain about undefined button-release events */
+ − 4349 if (XEVENT_TYPE (terminal) != button_release_event)
+ − 4350 {
+ − 4351 Lisp_Object keys = current_events_into_vector (command_builder);
+ − 4352 struct gcpro gcpro1;
+ − 4353
+ − 4354 /* Run the pre-command-hook before barfing about an undefined
+ − 4355 key. */
+ − 4356 Vthis_command = Qnil;
+ − 4357 GCPRO1 (keys);
+ − 4358 pre_command_hook ();
+ − 4359 UNGCPRO;
+ − 4360 /* The post-command-hook doesn't run. */
+ − 4361 Fsignal (Qundefined_keystroke_sequence, list1 (keys));
+ − 4362 }
+ − 4363 /* Reset the command builder for reading the next sequence. */
+ − 4364 reset_this_command_keys (console, 1);
+ − 4365 }
+ − 4366 else /* key sequence is bound to a command */
+ − 4367 {
430
+ − 4368 int magic_undo = 0;
+ − 4369 int magic_undo_count = 20;
+ − 4370
428
+ − 4371 Vthis_command = leaf;
430
+ − 4372
428
+ − 4373 /* Don't push an undo boundary if the command set the prefix arg,
+ − 4374 or if we are executing a keyboard macro, or if in the
+ − 4375 minibuffer. If the command we are about to execute is
+ − 4376 self-insert, it's tricky: up to 20 consecutive self-inserts may
+ − 4377 be done without an undo boundary. This counter is reset as
+ − 4378 soon as a command other than self-insert-command is executed.
430
+ − 4379
442
+ − 4380 Programmers can also use the `self-insert-defer-undo'
+ − 4381 property to install that behavior on functions other
430
+ − 4382 than `self-insert-command', or to change the magic
442
+ − 4383 number 20 to something else. #### DOCUMENT THIS! */
430
+ − 4384
+ − 4385 if (SYMBOLP (leaf))
+ − 4386 {
+ − 4387 Lisp_Object prop = Fget (leaf, Qself_insert_defer_undo, Qnil);
+ − 4388 if (NATNUMP (prop))
+ − 4389 magic_undo = 1, magic_undo_count = XINT (prop);
+ − 4390 else if (!NILP (prop))
+ − 4391 magic_undo = 1;
+ − 4392 else if (EQ (leaf, Qself_insert_command))
+ − 4393 magic_undo = 1;
+ − 4394 }
+ − 4395
+ − 4396 if (!magic_undo)
428
+ − 4397 command_builder->self_insert_countdown = 0;
+ − 4398 if (NILP (XCONSOLE (console)->prefix_arg)
+ − 4399 && NILP (Vexecuting_macro)
+ − 4400 && command_builder->self_insert_countdown == 0)
+ − 4401 Fundo_boundary ();
+ − 4402
430
+ − 4403 if (magic_undo)
428
+ − 4404 {
+ − 4405 if (--command_builder->self_insert_countdown < 0)
430
+ − 4406 command_builder->self_insert_countdown = magic_undo_count;
428
+ − 4407 }
+ − 4408 execute_command_event
+ − 4409 (command_builder,
444
+ − 4410 internal_equal (event, command_builder->most_current_event, 0)
428
+ − 4411 ? event
+ − 4412 /* Use the translated event that was most recently seen.
+ − 4413 This way, last-command-event becomes f1 instead of
+ − 4414 the P from ESC O P. But we must copy it, else we'll
+ − 4415 lose when the command-builder events are deallocated. */
444
+ − 4416 : Fcopy_event (command_builder->most_current_event, Qnil));
428
+ − 4417 }
+ − 4418 break;
+ − 4419 }
+ − 4420 case misc_user_event:
+ − 4421 {
+ − 4422 /* Jamie said:
+ − 4423
+ − 4424 We could just always use the menu item entry, whatever it is, but
+ − 4425 this might break some Lisp code that expects `this-command' to
+ − 4426 always contain a symbol. So only store it if this is a simple
+ − 4427 `call-interactively' sort of menu item.
+ − 4428
+ − 4429 But this is bogus. `this-command' could be a string or vector
+ − 4430 anyway (for keyboard macros). There's even one instance
+ − 4431 (in pending-del.el) of `this-command' getting set to a cons
+ − 4432 (a lambda expression). So in the `eval' case I'll just
+ − 4433 convert it into a lambda expression.
+ − 4434 */
1204
+ − 4435 if (EQ (XEVENT_MISC_USER_FUNCTION (event), Qcall_interactively)
+ − 4436 && SYMBOLP (XEVENT_MISC_USER_OBJECT (event)))
+ − 4437 Vthis_command = XEVENT_MISC_USER_OBJECT (event);
+ − 4438 else if (EQ (XEVENT_MISC_USER_FUNCTION (event), Qeval))
934
+ − 4439 Vthis_command =
1204
+ − 4440 Fcons (Qlambda, Fcons (Qnil, XEVENT_MISC_USER_OBJECT (event)));
+ − 4441 else if (SYMBOLP (XEVENT_MISC_USER_FUNCTION (event)))
934
+ − 4442 /* A scrollbar command or the like. */
1204
+ − 4443 Vthis_command = XEVENT_MISC_USER_FUNCTION (event);
428
+ − 4444 else
+ − 4445 /* Huh? */
+ − 4446 Vthis_command = Qnil;
+ − 4447
+ − 4448 /* clear the echo area */
+ − 4449 reset_key_echo (command_builder, 1);
+ − 4450
+ − 4451 command_builder->self_insert_countdown = 0;
+ − 4452 if (NILP (XCONSOLE (console)->prefix_arg)
+ − 4453 && NILP (Vexecuting_macro)
+ − 4454 && !EQ (minibuf_window, Fselected_window (Qnil)))
+ − 4455 Fundo_boundary ();
+ − 4456 execute_command_event (command_builder, event);
+ − 4457 break;
+ − 4458 }
+ − 4459 default:
+ − 4460 execute_internal_event (event);
+ − 4461 break;
+ − 4462 }
1292
+ − 4463
+ − 4464 PROFILE_RECORD_EXITING_SECTION (Qdispatch_event);
428
+ − 4465 return Qnil;
+ − 4466 }
+ − 4467
+ − 4468 DEFUN ("read-key-sequence", Fread_key_sequence, 1, 3, 0, /*
+ − 4469 Read a sequence of keystrokes or mouse clicks.
+ − 4470 Returns a vector of the event objects read. The vector and the event
444
+ − 4471 objects it contains are freshly created (and so will not be side-effected
428
+ − 4472 by subsequent calls to this function).
+ − 4473
+ − 4474 The sequence read is sufficient to specify a non-prefix command starting
+ − 4475 from the current local and global keymaps. A C-g typed while in this
+ − 4476 function is treated like any other character, and `quit-flag' is not set.
+ − 4477
+ − 4478 First arg PROMPT is a prompt string. If nil, do not prompt specially.
444
+ − 4479
+ − 4480 Second optional arg CONTINUE-ECHO non-nil means this key echoes as a
+ − 4481 continuation of the previous key.
+ − 4482
+ − 4483 Third optional arg DONT-DOWNCASE-LAST non-nil means do not convert the
+ − 4484 last event to lower case. (Normally any upper case event is converted
+ − 4485 to lower case if the original event is undefined and the lower case
+ − 4486 equivalent is defined.) This argument is provided mostly for FSF
+ − 4487 compatibility; the equivalent effect can be achieved more generally by
+ − 4488 binding `retry-undefined-key-binding-unshifted' to nil around the call
+ − 4489 to `read-key-sequence'.
428
+ − 4490
+ − 4491 If the user selects a menu item while we are prompting for a key-sequence,
+ − 4492 the returned value will be a vector of a single menu-selection event.
+ − 4493 An error will be signalled if you pass this value to `lookup-key' or a
+ − 4494 related function.
+ − 4495
+ − 4496 `read-key-sequence' checks `function-key-map' for function key
444
+ − 4497 sequences, where they wouldn't conflict with ordinary bindings.
+ − 4498 See `function-key-map' for more details.
428
+ − 4499 */
+ − 4500 (prompt, continue_echo, dont_downcase_last))
+ − 4501 {
+ − 4502 /* This function can GC */
+ − 4503 struct console *con = XCONSOLE (Vselected_console); /* #### correct?
+ − 4504 Probably not -- see
+ − 4505 comment in
+ − 4506 next-event */
+ − 4507 struct command_builder *command_builder =
+ − 4508 XCOMMAND_BUILDER (con->command_builder);
+ − 4509 Lisp_Object result;
+ − 4510 Lisp_Object event = Fmake_event (Qnil, Qnil);
+ − 4511 int speccount = specpdl_depth ();
+ − 4512 struct gcpro gcpro1;
+ − 4513 GCPRO1 (event);
+ − 4514
707
+ − 4515 record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
428
+ − 4516 if (!NILP (prompt))
+ − 4517 CHECK_STRING (prompt);
+ − 4518 /* else prompt = Fkeymap_prompt (current_buffer->keymap); may GC */
+ − 4519 QUIT;
+ − 4520
+ − 4521 if (NILP (continue_echo))
771
+ − 4522 reset_this_command_keys (wrap_console (con), 1);
428
+ − 4523
+ − 4524 if (!NILP (dont_downcase_last))
+ − 4525 specbind (Qretry_undefined_key_binding_unshifted, Qnil);
+ − 4526
+ − 4527 for (;;)
+ − 4528 {
+ − 4529 Fnext_event (event, prompt);
+ − 4530 /* restore the selected-console damage */
+ − 4531 con = event_console_or_selected (event);
+ − 4532 command_builder = XCOMMAND_BUILDER (con->command_builder);
+ − 4533 if (! command_event_p (event))
+ − 4534 execute_internal_event (event);
+ − 4535 else
+ − 4536 {
934
+ − 4537 if (XEVENT_TYPE (event) == misc_user_event)
428
+ − 4538 reset_current_events (command_builder);
+ − 4539 result = lookup_command_event (command_builder, event, 1);
+ − 4540 if (!KEYMAPP (result))
+ − 4541 {
+ − 4542 result = current_events_into_vector (command_builder);
+ − 4543 reset_key_echo (command_builder, 0);
+ − 4544 break;
+ − 4545 }
+ − 4546 prompt = Qnil;
+ − 4547 }
+ − 4548 }
+ − 4549
+ − 4550 Fdeallocate_event (event);
771
+ − 4551 RETURN_UNGCPRO (unbind_to_1 (speccount, result));
428
+ − 4552 }
+ − 4553
+ − 4554 DEFUN ("this-command-keys", Fthis_command_keys, 0, 0, 0, /*
+ − 4555 Return a vector of the keyboard or mouse button events that were used
+ − 4556 to invoke this command. This copies the vector and the events; it is safe
+ − 4557 to keep and modify them.
+ − 4558 */
+ − 4559 ())
+ − 4560 {
+ − 4561 Lisp_Object event;
+ − 4562 Lisp_Object result;
+ − 4563 int len;
+ − 4564
+ − 4565 if (NILP (Vthis_command_keys))
+ − 4566 return make_vector (0, Qnil);
+ − 4567
+ − 4568 len = event_chain_count (Vthis_command_keys);
+ − 4569
+ − 4570 result = make_vector (len, Qnil);
+ − 4571 len = 0;
+ − 4572 EVENT_CHAIN_LOOP (event, Vthis_command_keys)
+ − 4573 XVECTOR_DATA (result)[len++] = Fcopy_event (event, Qnil);
+ − 4574 return result;
+ − 4575 }
+ − 4576
+ − 4577 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, 0, 0, 0, /*
+ − 4578 Used for complicated reasons in `universal-argument-other-key'.
+ − 4579
+ − 4580 `universal-argument-other-key' rereads the event just typed.
+ − 4581 It then gets translated through `function-key-map'.
+ − 4582 The translated event gets included in the echo area and in
+ − 4583 the value of `this-command-keys' in addition to the raw original event.
+ − 4584 That is not right.
+ − 4585
+ − 4586 Calling this function directs the translated event to replace
+ − 4587 the original event, so that only one version of the event actually
430
+ − 4588 appears in the echo area and in the value of `this-command-keys'.
428
+ − 4589 */
+ − 4590 ())
+ − 4591 {
+ − 4592 /* #### I don't understand this at all, so currently it does nothing.
+ − 4593 If there is ever a problem, maybe someone should investigate. */
+ − 4594 return Qnil;
+ − 4595 }
+ − 4596
+ − 4597
+ − 4598 static void
+ − 4599 dribble_out_event (Lisp_Object event)
+ − 4600 {
+ − 4601 if (NILP (Vdribble_file))
+ − 4602 return;
+ − 4603
934
+ − 4604 if (XEVENT_TYPE (event) == key_press_event &&
1204
+ − 4605 !XEVENT_KEY_MODIFIERS (event))
934
+ − 4606 {
1204
+ − 4607 Lisp_Object keysym = XEVENT_KEY_KEYSYM (event);
+ − 4608 if (CHARP (XEVENT_KEY_KEYSYM (event)))
428
+ − 4609 {
867
+ − 4610 Ichar ch = XCHAR (keysym);
+ − 4611 Ibyte str[MAX_ICHAR_LEN];
+ − 4612 Bytecount len = set_itext_ichar (str, ch);
428
+ − 4613 Lstream_write (XLSTREAM (Vdribble_file), str, len);
+ − 4614 }
826
+ − 4615 else if (string_char_length (XSYMBOL (keysym)->name) == 1)
428
+ − 4616 /* one-char key events are printed with just the key name */
+ − 4617 Fprinc (keysym, Vdribble_file);
+ − 4618 else if (EQ (keysym, Qreturn))
+ − 4619 Lstream_putc (XLSTREAM (Vdribble_file), '\n');
+ − 4620 else if (EQ (keysym, Qspace))
+ − 4621 Lstream_putc (XLSTREAM (Vdribble_file), ' ');
+ − 4622 else
+ − 4623 Fprinc (event, Vdribble_file);
+ − 4624 }
+ − 4625 else
+ − 4626 Fprinc (event, Vdribble_file);
+ − 4627 Lstream_flush (XLSTREAM (Vdribble_file));
+ − 4628 }
+ − 4629
+ − 4630 DEFUN ("open-dribble-file", Fopen_dribble_file, 1, 1,
+ − 4631 "FOpen dribble file: ", /*
444
+ − 4632 Start writing all keyboard characters to a dribble file called FILENAME.
+ − 4633 If FILENAME is nil, close any open dribble file.
428
+ − 4634 */
444
+ − 4635 (filename))
428
+ − 4636 {
+ − 4637 /* This function can GC */
+ − 4638 /* XEmacs change: always close existing dribble file. */
+ − 4639 /* FSFmacs uses FILE *'s here. With lstreams, that's unnecessary. */
+ − 4640 if (!NILP (Vdribble_file))
+ − 4641 {
+ − 4642 Lstream_close (XLSTREAM (Vdribble_file));
+ − 4643 Vdribble_file = Qnil;
+ − 4644 }
444
+ − 4645 if (!NILP (filename))
428
+ − 4646 {
+ − 4647 int fd;
+ − 4648
444
+ − 4649 filename = Fexpand_file_name (filename, Qnil);
771
+ − 4650 fd = qxe_open (XSTRING_DATA (filename),
+ − 4651 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
+ − 4652 CREAT_MODE);
428
+ − 4653 if (fd < 0)
563
+ − 4654 report_file_error ("Unable to create dribble file", filename);
428
+ − 4655 Vdribble_file = make_filedesc_output_stream (fd, 0, 0, LSTR_CLOSING);
+ − 4656 #ifdef MULE
+ − 4657 Vdribble_file =
771
+ − 4658 make_coding_output_stream
+ − 4659 (XLSTREAM (Vdribble_file),
800
+ − 4660 Qescape_quoted, CODING_ENCODE, 0);
428
+ − 4661 #endif
+ − 4662 }
+ − 4663 return Qnil;
+ − 4664 }
+ − 4665
+ − 4666
442
+ − 4667
+ − 4668 DEFUN ("current-event-timestamp", Fcurrent_event_timestamp, 0, 1, 0, /*
+ − 4669 Return the current event timestamp of the window system associated with CONSOLE.
+ − 4670 CONSOLE defaults to the selected console if omitted.
+ − 4671 */
+ − 4672 (console))
+ − 4673 {
+ − 4674 struct console *c = decode_console (console);
+ − 4675 int tiempo = event_stream_current_event_timestamp (c);
+ − 4676
+ − 4677 /* This junk is so that timestamps don't get to be negative, but contain
+ − 4678 as many bits as this particular emacs will allow.
+ − 4679 */
2039
+ − 4680 return make_int (EMACS_INT_MAX & tiempo);
442
+ − 4681 }
+ − 4682
+ − 4683
428
+ − 4684 /************************************************************************/
+ − 4685 /* initialization */
+ − 4686 /************************************************************************/
+ − 4687
+ − 4688 void
+ − 4689 syms_of_event_stream (void)
+ − 4690 {
442
+ − 4691 INIT_LRECORD_IMPLEMENTATION (command_builder);
+ − 4692 INIT_LRECORD_IMPLEMENTATION (timeout);
+ − 4693
563
+ − 4694 DEFSYMBOL (Qdisabled);
+ − 4695 DEFSYMBOL (Qcommand_event_p);
+ − 4696
+ − 4697 DEFERROR_STANDARD (Qundefined_keystroke_sequence, Qsyntax_error);
+ − 4698 DEFERROR_STANDARD (Qinvalid_key_binding, Qinvalid_state);
428
+ − 4699
+ − 4700 DEFSUBR (Frecent_keys);
+ − 4701 DEFSUBR (Frecent_keys_ring_size);
+ − 4702 DEFSUBR (Fset_recent_keys_ring_size);
+ − 4703 DEFSUBR (Finput_pending_p);
+ − 4704 DEFSUBR (Fenqueue_eval_event);
+ − 4705 DEFSUBR (Fnext_event);
+ − 4706 DEFSUBR (Fnext_command_event);
+ − 4707 DEFSUBR (Fdiscard_input);
+ − 4708 DEFSUBR (Fsit_for);
+ − 4709 DEFSUBR (Fsleep_for);
+ − 4710 DEFSUBR (Faccept_process_output);
+ − 4711 DEFSUBR (Fadd_timeout);
+ − 4712 DEFSUBR (Fdisable_timeout);
+ − 4713 DEFSUBR (Fadd_async_timeout);
+ − 4714 DEFSUBR (Fdisable_async_timeout);
+ − 4715 DEFSUBR (Fdispatch_event);
442
+ − 4716 DEFSUBR (Fdispatch_non_command_events);
428
+ − 4717 DEFSUBR (Fread_key_sequence);
+ − 4718 DEFSUBR (Fthis_command_keys);
+ − 4719 DEFSUBR (Freset_this_command_lengths);
+ − 4720 DEFSUBR (Fopen_dribble_file);
442
+ − 4721 DEFSUBR (Fcurrent_event_timestamp);
428
+ − 4722
563
+ − 4723 DEFSYMBOL (Qpre_command_hook);
+ − 4724 DEFSYMBOL (Qpost_command_hook);
+ − 4725 DEFSYMBOL (Qunread_command_events);
+ − 4726 DEFSYMBOL (Qunread_command_event);
+ − 4727 DEFSYMBOL (Qpre_idle_hook);
+ − 4728 DEFSYMBOL (Qhandle_pre_motion_command);
+ − 4729 DEFSYMBOL (Qhandle_post_motion_command);
+ − 4730 DEFSYMBOL (Qretry_undefined_key_binding_unshifted);
+ − 4731 DEFSYMBOL (Qauto_show_make_point_visible);
+ − 4732
+ − 4733 DEFSYMBOL (Qself_insert_defer_undo);
+ − 4734 DEFSYMBOL (Qcancel_mode_internal);
1292
+ − 4735
+ − 4736 DEFSYMBOL (Qnext_event);
+ − 4737 DEFSYMBOL (Qdispatch_event);
428
+ − 4738 }
+ − 4739
+ − 4740 void
+ − 4741 reinit_vars_of_event_stream (void)
+ − 4742 {
+ − 4743 recent_keys_ring_index = 0;
+ − 4744 recent_keys_ring_size = 100;
+ − 4745 num_input_chars = 0;
440
+ − 4746 Vtimeout_free_list = make_lcrecord_list (sizeof (Lisp_Timeout),
428
+ − 4747 &lrecord_timeout);
+ − 4748 staticpro_nodump (&Vtimeout_free_list);
771
+ − 4749 Vcommand_builder_free_list =
+ − 4750 make_lcrecord_list (sizeof (struct command_builder),
+ − 4751 &lrecord_command_builder);
+ − 4752 staticpro_nodump (&Vcommand_builder_free_list);
428
+ − 4753 the_low_level_timeout_blocktype =
+ − 4754 Blocktype_new (struct low_level_timeout_blocktype);
+ − 4755 something_happened = 0;
1268
+ − 4756 recursive_sit_for = 0;
+ − 4757 in_modal_loop = 0;
428
+ − 4758 }
+ − 4759
+ − 4760 void
+ − 4761 vars_of_event_stream (void)
+ − 4762 {
+ − 4763 Vrecent_keys_ring = Qnil;
+ − 4764 staticpro (&Vrecent_keys_ring);
+ − 4765
+ − 4766 Vthis_command_keys = Qnil;
+ − 4767 staticpro (&Vthis_command_keys);
+ − 4768 Vthis_command_keys_tail = Qnil;
1204
+ − 4769 dump_add_root_lisp_object (&Vthis_command_keys_tail);
428
+ − 4770
+ − 4771 command_event_queue = Qnil;
+ − 4772 staticpro (&command_event_queue);
+ − 4773 command_event_queue_tail = Qnil;
1204
+ − 4774 dump_add_root_lisp_object (&command_event_queue_tail);
+ − 4775
+ − 4776 dispatch_event_queue = Qnil;
+ − 4777 staticpro (&dispatch_event_queue);
+ − 4778 dispatch_event_queue_tail = Qnil;
+ − 4779 dump_add_root_lisp_object (&dispatch_event_queue_tail);
428
+ − 4780
+ − 4781 Vlast_selected_frame = Qnil;
+ − 4782 staticpro (&Vlast_selected_frame);
+ − 4783
+ − 4784 pending_timeout_list = Qnil;
+ − 4785 staticpro (&pending_timeout_list);
+ − 4786
+ − 4787 pending_async_timeout_list = Qnil;
+ − 4788 staticpro (&pending_async_timeout_list);
+ − 4789
+ − 4790 last_point_position_buffer = Qnil;
+ − 4791 staticpro (&last_point_position_buffer);
+ − 4792
1292
+ − 4793 QSnext_event_internal = build_string ("next_event_internal()");
+ − 4794 staticpro (&QSnext_event_internal);
+ − 4795 QSexecute_internal_event = build_string ("execute_internal_event()");
+ − 4796 staticpro (&QSexecute_internal_event);
+ − 4797
428
+ − 4798 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes /*
+ − 4799 *Nonzero means echo unfinished commands after this many seconds of pause.
+ − 4800 */ );
+ − 4801 Vecho_keystrokes = make_int (1);
+ − 4802
+ − 4803 DEFVAR_INT ("auto-save-interval", &auto_save_interval /*
+ − 4804 *Number of keyboard input characters between auto-saves.
+ − 4805 Zero means disable autosaving due to number of characters typed.
+ − 4806 See also the variable `auto-save-timeout'.
+ − 4807 */ );
+ − 4808 auto_save_interval = 300;
+ − 4809
+ − 4810 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook /*
+ − 4811 Function or functions to run before every command.
+ − 4812 This may examine the `this-command' variable to find out what command
+ − 4813 is about to be run, or may change it to cause a different command to run.
853
+ − 4814 Errors while running the hook are caught and turned into warnings.
428
+ − 4815 */ );
+ − 4816 Vpre_command_hook = Qnil;
+ − 4817
+ − 4818 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook /*
+ − 4819 Function or functions to run after every command.
+ − 4820 This may examine the `this-command' variable to find out what command
+ − 4821 was just executed.
+ − 4822 */ );
+ − 4823 Vpost_command_hook = Qnil;
+ − 4824
+ − 4825 DEFVAR_LISP ("pre-idle-hook", &Vpre_idle_hook /*
+ − 4826 Normal hook run when XEmacs it about to be idle.
+ − 4827 This occurs whenever it is going to block, waiting for an event.
+ − 4828 This generally happens as a result of a call to `next-event',
+ − 4829 `next-command-event', `sit-for', `sleep-for', `accept-process-output',
853
+ − 4830 or `get-selection'. Errors while running the hook are caught and
+ − 4831 turned into warnings.
428
+ − 4832 */ );
+ − 4833 Vpre_idle_hook = Qnil;
+ − 4834
+ − 4835 DEFVAR_BOOL ("focus-follows-mouse", &focus_follows_mouse /*
+ − 4836 *Variable to control XEmacs behavior with respect to focus changing.
+ − 4837 If this variable is set to t, then XEmacs will not gratuitously change
+ − 4838 the keyboard focus. XEmacs cannot in general detect when this mode is
+ − 4839 used by the window manager, so it is up to the user to set it.
+ − 4840 */ );
+ − 4841 focus_follows_mouse = 0;
+ − 4842
+ − 4843 DEFVAR_LISP ("last-command-event", &Vlast_command_event /*
+ − 4844 Last keyboard or mouse button event that was part of a command. This
+ − 4845 variable is off limits: you may not set its value or modify the event that
+ − 4846 is its value, as it is destructively modified by `read-key-sequence'. If
+ − 4847 you want to keep a pointer to this value, you must use `copy-event'.
+ − 4848 */ );
+ − 4849 Vlast_command_event = Qnil;
+ − 4850
+ − 4851 DEFVAR_LISP ("last-command-char", &Vlast_command_char /*
+ − 4852 If the value of `last-command-event' is a keyboard event, then
+ − 4853 this is the nearest ASCII equivalent to it. This is the value that
+ − 4854 `self-insert-command' will put in the buffer. Remember that there is
+ − 4855 NOT a 1:1 mapping between keyboard events and ASCII characters: the set
+ − 4856 of keyboard events is much larger, so writing code that examines this
+ − 4857 variable to determine what key has been typed is bad practice, unless
+ − 4858 you are certain that it will be one of a small set of characters.
+ − 4859 */ );
+ − 4860 Vlast_command_char = Qnil;
+ − 4861
+ − 4862 DEFVAR_LISP ("last-input-event", &Vlast_input_event /*
+ − 4863 Last keyboard or mouse button event received. This variable is off
+ − 4864 limits: you may not set its value or modify the event that is its value, as
+ − 4865 it is destructively modified by `next-event'. If you want to keep a pointer
+ − 4866 to this value, you must use `copy-event'.
+ − 4867 */ );
+ − 4868 Vlast_input_event = Qnil;
+ − 4869
+ − 4870 DEFVAR_LISP ("current-mouse-event", &Vcurrent_mouse_event /*
+ − 4871 The mouse-button event which invoked this command, or nil.
+ − 4872 This is usually what `(interactive "e")' returns.
+ − 4873 */ );
+ − 4874 Vcurrent_mouse_event = Qnil;
+ − 4875
+ − 4876 DEFVAR_LISP ("last-input-char", &Vlast_input_char /*
+ − 4877 If the value of `last-input-event' is a keyboard event, then
+ − 4878 this is the nearest ASCII equivalent to it. Remember that there is
+ − 4879 NOT a 1:1 mapping between keyboard events and ASCII characters: the set
+ − 4880 of keyboard events is much larger, so writing code that examines this
+ − 4881 variable to determine what key has been typed is bad practice, unless
+ − 4882 you are certain that it will be one of a small set of characters.
+ − 4883 */ );
+ − 4884 Vlast_input_char = Qnil;
+ − 4885
+ − 4886 DEFVAR_LISP ("last-input-time", &Vlast_input_time /*
+ − 4887 The time (in seconds since Jan 1, 1970) of the last-command-event,
+ − 4888 represented as a cons of two 16-bit integers. This is destructively
+ − 4889 modified, so copy it if you want to keep it.
+ − 4890 */ );
+ − 4891 Vlast_input_time = Qnil;
+ − 4892
+ − 4893 DEFVAR_LISP ("last-command-event-time", &Vlast_command_event_time /*
+ − 4894 The time (in seconds since Jan 1, 1970) of the last-command-event,
+ − 4895 represented as a list of three integers. The first integer contains
+ − 4896 the most significant 16 bits of the number of seconds, and the second
+ − 4897 integer contains the least significant 16 bits. The third integer
+ − 4898 contains the remainder number of microseconds, if the current system
+ − 4899 supports microsecond clock resolution. This list is destructively
+ − 4900 modified, so copy it if you want to keep it.
+ − 4901 */ );
+ − 4902 Vlast_command_event_time = Qnil;
+ − 4903
+ − 4904 DEFVAR_LISP ("unread-command-events", &Vunread_command_events /*
+ − 4905 List of event objects to be read as next command input events.
+ − 4906 This can be used to simulate the receipt of events from the user.
+ − 4907 Normally this is nil.
+ − 4908 Events are removed from the front of this list.
+ − 4909 */ );
+ − 4910 Vunread_command_events = Qnil;
+ − 4911
+ − 4912 DEFVAR_LISP ("unread-command-event", &Vunread_command_event /*
+ − 4913 Obsolete. Use `unread-command-events' instead.
+ − 4914 */ );
+ − 4915 Vunread_command_event = Qnil;
+ − 4916
+ − 4917 DEFVAR_LISP ("last-command", &Vlast_command /*
+ − 4918 The last command executed. Normally a symbol with a function definition,
+ − 4919 but can be whatever was found in the keymap, or whatever the variable
+ − 4920 `this-command' was set to by that command.
+ − 4921 */ );
+ − 4922 Vlast_command = Qnil;
+ − 4923
+ − 4924 DEFVAR_LISP ("this-command", &Vthis_command /*
+ − 4925 The command now being executed.
+ − 4926 The command can set this variable; whatever is put here
+ − 4927 will be in `last-command' during the following command.
+ − 4928 */ );
+ − 4929 Vthis_command = Qnil;
+ − 4930
442
+ − 4931 DEFVAR_LISP ("last-command-properties", &Vlast_command_properties /*
+ − 4932 Value of `this-command-properties' for the last command.
+ − 4933 Used by commands to help synchronize consecutive commands, in preference
+ − 4934 to looking at `last-command' directly.
+ − 4935 */ );
+ − 4936 Vlast_command_properties = Qnil;
+ − 4937
+ − 4938 DEFVAR_LISP ("this-command-properties", &Vthis_command_properties /*
+ − 4939 Properties set by the current command.
+ − 4940 At the beginning of each command, the current value of this variable is
+ − 4941 copied to `last-command-properties', and then it is set to nil. Use `putf'
+ − 4942 to add properties to this variable. Commands should use this to communicate
+ − 4943 with pre/post-command hooks, subsequent commands, wrapping commands, etc.
+ − 4944 in preference to looking at and/or setting `this-command'.
+ − 4945 */ );
+ − 4946 Vthis_command_properties = Qnil;
+ − 4947
428
+ − 4948 DEFVAR_LISP ("help-char", &Vhelp_char /*
+ − 4949 Character to recognize as meaning Help.
+ − 4950 When it is read, do `(eval help-form)', and display result if it's a string.
+ − 4951 If the value of `help-form' is nil, this char can be read normally.
+ − 4952 This can be any form recognized as a single key specifier.
+ − 4953 The help-char cannot be a negative number in XEmacs.
+ − 4954 */ );
+ − 4955 Vhelp_char = make_char (8); /* C-h */
+ − 4956
+ − 4957 DEFVAR_LISP ("help-form", &Vhelp_form /*
+ − 4958 Form to execute when character help-char is read.
+ − 4959 If the form returns a string, that string is displayed.
+ − 4960 If `help-form' is nil, the help char is not recognized.
+ − 4961 */ );
+ − 4962 Vhelp_form = Qnil;
+ − 4963
+ − 4964 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command /*
+ − 4965 Command to run when `help-char' character follows a prefix key.
+ − 4966 This command is used only when there is no actual binding
+ − 4967 for that character after that prefix key.
+ − 4968 */ );
+ − 4969 Vprefix_help_command = Qnil;
+ − 4970
+ − 4971 DEFVAR_CONST_LISP ("keyboard-translate-table", &Vkeyboard_translate_table /*
+ − 4972 Hash table used as translate table for keyboard input.
+ − 4973 Use `keyboard-translate' to portably add entries to this table.
+ − 4974 Each key-press event is looked up in this table as follows:
+ − 4975
+ − 4976 -- If an entry maps a symbol to a symbol, then a key-press event whose
+ − 4977 keysym is the former symbol (with any modifiers at all) gets its
+ − 4978 keysym changed and its modifiers left alone. This is useful for
+ − 4979 dealing with non-standard X keyboards, such as the grievous damage
+ − 4980 that Sun has inflicted upon the world.
442
+ − 4981 -- If an entry maps a symbol to a character, then a key-press event
+ − 4982 whose keysym is the former symbol (with any modifiers at all) gets
+ − 4983 changed into a key-press event matching the latter character, and the
+ − 4984 resulting modifiers are the union of the original and new modifiers.
428
+ − 4985 -- If an entry maps a character to a character, then a key-press event
+ − 4986 matching the former character gets converted to a key-press event
+ − 4987 matching the latter character. This is useful on ASCII terminals
+ − 4988 for (e.g.) making C-\\ look like C-s, to get around flow-control
+ − 4989 problems.
+ − 4990 -- If an entry maps a character to a symbol, then a key-press event
+ − 4991 matching the character gets converted to a key-press event whose
+ − 4992 keysym is the given symbol and which has no modifiers.
442
+ − 4993
+ − 4994 Here's an example: This makes typing parens and braces easier by rerouting
+ − 4995 their positions to eliminate the need to use the Shift key.
+ − 4996
+ − 4997 (keyboard-translate ?[ ?()
+ − 4998 (keyboard-translate ?] ?))
+ − 4999 (keyboard-translate ?{ ?[)
+ − 5000 (keyboard-translate ?} ?])
+ − 5001 (keyboard-translate 'f11 ?{)
+ − 5002 (keyboard-translate 'f12 ?})
428
+ − 5003 */ );
+ − 5004
+ − 5005 DEFVAR_LISP ("retry-undefined-key-binding-unshifted",
+ − 5006 &Vretry_undefined_key_binding_unshifted /*
+ − 5007 If a key-sequence which ends with a shifted keystroke is undefined
+ − 5008 and this variable is non-nil then the command lookup is retried again
+ − 5009 with the last key unshifted. (e.g. C-X C-F would be retried as C-X C-f.)
+ − 5010 If lookup still fails, a normal error is signalled. In general,
+ − 5011 you should *bind* this, not set it.
+ − 5012 */ );
+ − 5013 Vretry_undefined_key_binding_unshifted = Qt;
+ − 5014
442
+ − 5015 DEFVAR_BOOL ("modifier-keys-are-sticky", &modifier_keys_are_sticky /*
+ − 5016 *Non-nil makes modifier keys sticky.
+ − 5017 This means that you can release the modifier key before pressing down
+ − 5018 the key that you wish to be modified. Although this is non-standard
+ − 5019 behavior, it is recommended because it reduces the strain on your hand,
+ − 5020 thus reducing the incidence of the dreaded Emacs-pinky syndrome.
444
+ − 5021
+ − 5022 Modifier keys are sticky within the inverval specified by
+ − 5023 `modifier-keys-sticky-time'.
442
+ − 5024 */ );
+ − 5025 modifier_keys_are_sticky = 0;
+ − 5026
444
+ − 5027 DEFVAR_LISP ("modifier-keys-sticky-time", &Vmodifier_keys_sticky_time /*
+ − 5028 *Modifier keys are sticky within this many milliseconds.
+ − 5029 If you don't want modifier keys sticking to be bounded, set this to
+ − 5030 non-integer value.
+ − 5031
+ − 5032 This variable has no effect when `modifier-keys-are-sticky' is nil.
+ − 5033 Currently only implemented under X Window System.
+ − 5034 */ );
+ − 5035 Vmodifier_keys_sticky_time = make_int (500);
+ − 5036
771
+ − 5037 #ifdef MULE
428
+ − 5038 DEFVAR_LISP ("composed-character-default-binding",
+ − 5039 &Vcomposed_character_default_binding /*
+ − 5040 The default keybinding to use for key events from composed input.
+ − 5041 Window systems frequently have ways to allow the user to compose
+ − 5042 single characters in a language using multiple keystrokes.
+ − 5043 XEmacs sees these as single character keypress events.
+ − 5044 */ );
+ − 5045 Vcomposed_character_default_binding = Qself_insert_command;
771
+ − 5046 #endif
428
+ − 5047
+ − 5048 Vcontrolling_terminal = Qnil;
+ − 5049 staticpro (&Vcontrolling_terminal);
+ − 5050
+ − 5051 Vdribble_file = Qnil;
+ − 5052 staticpro (&Vdribble_file);
+ − 5053
+ − 5054 #ifdef DEBUG_XEMACS
+ − 5055 DEFVAR_INT ("debug-emacs-events", &debug_emacs_events /*
+ − 5056 If non-zero, display debug information about Emacs events that XEmacs sees.
+ − 5057 Information is displayed on stderr.
+ − 5058
+ − 5059 Before the event, the source of the event is displayed in parentheses,
+ − 5060 and is one of the following:
+ − 5061
+ − 5062 \(real) A real event from the window system or
+ − 5063 terminal driver, as far as XEmacs can tell.
+ − 5064
+ − 5065 \(keyboard macro) An event generated from a keyboard macro.
+ − 5066
+ − 5067 \(unread-command-events) An event taken from `unread-command-events'.
+ − 5068
+ − 5069 \(unread-command-event) An event taken from `unread-command-event'.
+ − 5070
+ − 5071 \(command event queue) An event taken from an internal queue.
+ − 5072 Events end up on this queue when
+ − 5073 `enqueue-eval-event' is called or when
+ − 5074 user or eval events are received while
+ − 5075 XEmacs is blocking (e.g. in `sit-for',
+ − 5076 `sleep-for', or `accept-process-output',
+ − 5077 or while waiting for the reply to an
+ − 5078 X selection).
+ − 5079
+ − 5080 \(->keyboard-translate-table) The result of an event translated through
+ − 5081 keyboard-translate-table. Note that in
+ − 5082 this case, two events are printed even
+ − 5083 though only one is really generated.
+ − 5084
+ − 5085 \(SIGINT) A faked C-g resulting when XEmacs receives
+ − 5086 a SIGINT (e.g. C-c was pressed in XEmacs'
+ − 5087 controlling terminal or the signal was
+ − 5088 explicitly sent to the XEmacs process).
+ − 5089 */ );
+ − 5090 debug_emacs_events = 0;
+ − 5091 #endif
+ − 5092
+ − 5093 DEFVAR_BOOL ("inhibit-input-event-recording", &inhibit_input_event_recording /*
+ − 5094 Non-nil inhibits recording of input-events to recent-keys ring.
+ − 5095 */ );
+ − 5096 inhibit_input_event_recording = 0;
771
+ − 5097
428
+ − 5098 Vkeyboard_translate_table =
+ − 5099 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ);
+ − 5100 }
+ − 5101
+ − 5102 void
+ − 5103 init_event_stream (void)
+ − 5104 {
814
+ − 5105 /* Normally we don't initialize the event stream when running a bare
+ − 5106 temacs (the check for initialized) because it may do various things
+ − 5107 (e.g. under Xt) that we don't want any traces of in a dumped xemacs.
+ − 5108 However, sometimes we need to process events in a bare temacs (in
+ − 5109 particular, when make-docfile.el is executed); so we initialize as
+ − 5110 necessary in check_event_stream_ok(). */
428
+ − 5111 if (initialized)
+ − 5112 {
+ − 5113 #ifdef HAVE_UNIXOID_EVENT_LOOP
+ − 5114 init_event_unixoid ();
+ − 5115 #endif
+ − 5116 #ifdef HAVE_X_WINDOWS
+ − 5117 if (!strcmp (display_use, "x"))
+ − 5118 init_event_Xt_late ();
+ − 5119 else
+ − 5120 #endif
462
+ − 5121 #ifdef HAVE_GTK
+ − 5122 if (!strcmp (display_use, "gtk"))
+ − 5123 init_event_gtk_late ();
+ − 5124 else
+ − 5125 #endif
428
+ − 5126 #ifdef HAVE_MS_WINDOWS
+ − 5127 if (!strcmp (display_use, "mswindows"))
+ − 5128 init_event_mswindows_late ();
+ − 5129 else
+ − 5130 #endif
+ − 5131 {
+ − 5132 /* For TTY's, use the Xt event loop if we can; it allows
+ − 5133 us to later open an X connection. */
+ − 5134 #if defined (HAVE_MS_WINDOWS) && (!defined (HAVE_TTY) \
+ − 5135 || (defined (HAVE_MSG_SELECT) \
+ − 5136 && !defined (DEBUG_TTY_EVENT_STREAM)))
+ − 5137 init_event_mswindows_late ();
+ − 5138 #elif defined (HAVE_X_WINDOWS) && !defined (DEBUG_TTY_EVENT_STREAM)
+ − 5139 init_event_Xt_late ();
+ − 5140 #elif defined (HAVE_TTY)
+ − 5141 init_event_tty_late ();
+ − 5142 #endif
+ − 5143 }
+ − 5144 init_interrupts_late ();
+ − 5145 }
+ − 5146 }
+ − 5147
+ − 5148
+ − 5149 /*
853
+ − 5150 #### this comment is at least 8 years old and some may no longer apply.
+ − 5151
428
+ − 5152 useful testcases for v18/v19 compatibility:
+ − 5153
+ − 5154 (defun foo ()
+ − 5155 (interactive)
+ − 5156 (setq unread-command-event (character-to-event ?A (allocate-event)))
+ − 5157 (setq x (list (read-char)
+ − 5158 ; (read-key-sequence "") ; try it with and without this
+ − 5159 last-command-char last-input-char
+ − 5160 (recent-keys) (this-command-keys))))
+ − 5161 (global-set-key "\^Q" 'foo)
+ − 5162
+ − 5163 without the read-key-sequence:
444
+ − 5164 ^Q ==> (?A ?\^Q ?A [... ^Q] [^Q])
+ − 5165 ^U^U^Q ==> (?A ?\^Q ?A [... ^U ^U ^Q] [^U ^U ^Q])
+ − 5166 ^U^U^U^G^Q ==> (?A ?\^Q ?A [... ^U ^U ^U ^G ^Q] [^Q])
428
+ − 5167
+ − 5168 with the read-key-sequence:
444
+ − 5169 ^Qb ==> (?A [b] ?\^Q ?b [... ^Q b] [b])
+ − 5170 ^U^U^Qb ==> (?A [b] ?\^Q ?b [... ^U ^U ^Q b] [b])
+ − 5171 ^U^U^U^G^Qb ==> (?A [b] ?\^Q ?b [... ^U ^U ^U ^G ^Q b] [b])
428
+ − 5172
+ − 5173 ;the evi-mode command "4dlj.j.j.j.j.j." is also a good testcase (gag)
+ − 5174
+ − 5175 ;(setq x (list (read-char) quit-flag))^J^G
+ − 5176 ;(let ((inhibit-quit t)) (setq x (list (read-char) quit-flag)))^J^G
+ − 5177 ;for BOTH, x should get set to (7 t), but no result should be printed.
444
+ − 5178 ;; #### According to the doc of quit-flag, second test should return
+ − 5179 ;; (?\^G nil). Accidentaly XEmacs returns correct value. However,
+ − 5180 ;; XEmacs 21.1.12 and 21.2.36 both fails on first test.
428
+ − 5181
+ − 5182 ;also do this: make two frames, one viewing "*scratch*", the other "foo".
+ − 5183 ;in *scratch*, type (sit-for 20)^J
+ − 5184 ;wait a couple of seconds, move cursor to foo, type "a"
+ − 5185 ;a should be inserted in foo. Cursor highlighting should not change in
+ − 5186 ;the meantime.
+ − 5187
+ − 5188 ;do it with sleep-for. move cursor into foo, then back into *scratch*
+ − 5189 ;before typing.
+ − 5190 ;repeat also with (accept-process-output nil 20)
+ − 5191
+ − 5192 ;make sure ^G aborts sit-for, sleep-for and accept-process-output:
+ − 5193
+ − 5194 (defun tst ()
+ − 5195 (list (condition-case c
+ − 5196 (sleep-for 20)
+ − 5197 (quit c))
+ − 5198 (read-char)))
+ − 5199
444
+ − 5200 (tst)^Ja^G ==> ((quit) ?a) with no signal
+ − 5201 (tst)^J^Ga ==> ((quit) ?a) with no signal
+ − 5202 (tst)^Jabc^G ==> ((quit) ?a) with no signal, and "bc" inserted in buffer
428
+ − 5203
+ − 5204 ; with sit-for only do the 2nd test.
+ − 5205 ; Do all 3 tests with (accept-process-output nil 20)
+ − 5206
+ − 5207 Do this:
+ − 5208 (setq enable-recursive-minibuffers t
+ − 5209 minibuffer-max-depth nil)
+ − 5210 ESC ESC ESC ESC - there are now two minibuffers active
+ − 5211 C-g C-g C-g - there should be active 0, not 1
+ − 5212 Similarly:
+ − 5213 C-x C-f ~ / ? - wait for "Making completion list..." to display
+ − 5214 C-g - wait for "Quit" to display
+ − 5215 C-g - minibuffer should not be active
+ − 5216 however C-g before "Quit" is displayed should leave minibuffer active.
+ − 5217
+ − 5218 ;do it all in both v18 and v19 and make sure all results are the same.
+ − 5219 ;all of these cases matter a lot, but some in quite subtle ways.
+ − 5220 */
+ − 5221
+ − 5222 /*
+ − 5223 Additional test cases for accept-process-output, sleep-for, sit-for.
+ − 5224 Be sure you do all of the above checking for C-g and focus, too!
+ − 5225
+ − 5226 ; Make sure that timer handlers are run during, not after sit-for:
+ − 5227 (defun timer-check ()
+ − 5228 (add-timeout 2 '(lambda (ignore) (message "timer ran")) nil)
+ − 5229 (sit-for 5)
+ − 5230 (message "after sit-for"))
+ − 5231
+ − 5232 ; The first message should appear after 2 seconds, and the final message
+ − 5233 ; 3 seconds after that.
+ − 5234 ; repeat above test with (sleep-for 5) and (accept-process-output nil 5)
+ − 5235
+ − 5236
+ − 5237
+ − 5238 ; Make sure that process filters are run during, not after sit-for.
+ − 5239 (defun fubar ()
+ − 5240 (message "sit-for = %s" (sit-for 30)))
+ − 5241 (add-hook 'post-command-hook 'fubar)
+ − 5242
+ − 5243 ; Now type M-x shell RET
+ − 5244 ; wait for the shell prompt then send: ls RET
+ − 5245 ; the output of ls should fill immediately, and not wait 30 seconds.
+ − 5246
+ − 5247 ; repeat above test with (sleep-for 30) and (accept-process-output nil 30)
+ − 5248
+ − 5249
+ − 5250
+ − 5251 ; Make sure that recursive invocations return immediately:
+ − 5252 (defmacro test-diff-time (start end)
+ − 5253 `(+ (* (- (car ,end) (car ,start)) 65536.0)
+ − 5254 (- (cadr ,end) (cadr ,start))
+ − 5255 (/ (- (caddr ,end) (caddr ,start)) 1000000.0)))
+ − 5256
+ − 5257 (defun testee (ignore)
+ − 5258 (sit-for 10))
+ − 5259
+ − 5260 (defun test-them ()
+ − 5261 (let ((start (current-time))
+ − 5262 end)
+ − 5263 (add-timeout 2 'testee nil)
+ − 5264 (sit-for 5)
+ − 5265 (add-timeout 2 'testee nil)
+ − 5266 (sleep-for 5)
+ − 5267 (add-timeout 2 'testee nil)
+ − 5268 (accept-process-output nil 5)
+ − 5269 (setq end (current-time))
+ − 5270 (test-diff-time start end)))
+ − 5271
+ − 5272 (test-them) should sit for 15 seconds.
+ − 5273 Repeat with testee set to sleep-for and accept-process-output.
+ − 5274 These should each delay 36 seconds.
+ − 5275
+ − 5276 */
