Mercurial > hg > xemacs-beta
annotate src/event-stream.c @ 5803:b79e1e02bf01
Preserve extent information in the command builder code.
src/ChangeLog addition:
2014-07-14 Aidan Kehoe <kehoea@parhasard.net>
* event-stream.c:
* event-stream.c (mark_command_builder):
* event-stream.c (finalize_command_builder): Removed.
* event-stream.c (allocate_command_builder):
* event-stream.c (free_command_builder): Removed. Use
free_normal_lisp_object() instead.
* event-stream.c (echo_key_event):
* event-stream.c (regenerate_echo_keys_from_this_command_keys):
Detach all extents here.
* event-stream.c (maybe_echo_keys):
* event-stream.c (reset_key_echo):
* event-stream.c (execute_help_form):
* event-stream.c (Fnext_event):
* event-stream.c (command_builder_find_leaf_no_jit_binding):
* event-stream.c (command_builder_find_leaf):
* event-stream.c (lookup_command_event):
* events.h (struct command_builder):
Move the command builder's echo_buf to being a Lisp string rather
than a malloced Ibyte array. This allows passing through extent
information, which was previously dropped. It also simplifies the
allocation and release code for the command builder.
Rename echo_buf_index to echo_buf_fill_pointer, better reflecting
its function.
Don't rely on zero-termination (something not particularly
compatible with Lisp-level code) when showing a substring of
echo_buf that differs from that designated by
echo_buf_fill_pointer, keep a separate counter instead and use
that.
* minibuf.c:
* minibuf.c (echo_area_append):
Use the new START and END keyword arguments to #'append-message,
rather than consing a new string for basically every #'next-event
prompt displayed.
test/ChangeLog addition:
2014-07-14 Aidan Kehoe <kehoea@parhasard.net>
* automated/extent-tests.el:
Check that extent information is passed through to the echo area
correctly with #'next-event's PROMPT argument.
lisp/ChangeLog addition:
2014-07-14 Aidan Kehoe <kehoea@parhasard.net>
* simple.el (raw-append-message):
Use #'write-sequence in this, take its START and END keyword
arguments, so our callers don't have to cons as much.
* simple.el (append-message):
Pass through START and END here.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Mon, 14 Jul 2014 13:42:42 +0100 |
| parents | 0e9f791cc655 |
| children | 75435be92103 |
| rev | line source |
|---|---|
| 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. | |
| 5125 | 5 Copyright (C) 1995, 1996, 2001, 2002, 2003, 2005, 2010 Ben Wing. |
| 428 | 6 |
| 7 This file is part of XEmacs. | |
| 8 | |
|
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9 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 10 under the terms of the GNU General Public License as published by the |
|
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11 Free Software Foundation, either version 3 of the License, or (at your |
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12 option) any later version. |
| 428 | 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 | |
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20 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 21 |
| 22 /* Synched up with: Not in FSF. */ | |
| 23 | |
| 442 | 24 /* Authorship: |
| 25 | |
| 26 Created 1991 by Jamie Zawinski. | |
| 27 A great deal of work over the ages by Ben Wing (Mule-ization for 19.12, | |
| 28 device abstraction for 19.12/19.13, async timers for 19.14, | |
| 29 rewriting of focus code for 19.12, pre-idle hook for 19.12, | |
| 30 redoing of signal and quit handling for 19.9 and 19.12, | |
| 31 misc-user events to clean up menu/scrollbar handling for 19.11, | |
| 32 function-key-map/key-translation-map/keyboard-translate-table for | |
| 33 19.13/19.14, open-dribble-file for 19.13, much other cleanup). | |
| 34 focus-follows-mouse from Chuck Thompson, 1995. | |
| 35 XIM stuff by Martin Buchholz, c. 1996?. | |
| 36 */ | |
| 37 | |
| 428 | 38 /* This file has been Mule-ized. */ |
| 39 | |
| 40 /* | |
| 41 * DANGER!! | |
| 42 * | |
| 43 * If you ever change ANYTHING in this file, you MUST run the | |
| 44 * testcases at the end to make sure that you haven't changed | |
| 45 * the semantics of recent-keys, last-input-char, or keyboard | |
| 46 * macros. You'd be surprised how easy it is to break this. | |
| 47 * | |
| 48 */ | |
| 49 | |
| 50 /* TODO: | |
| 1204 | 51 [This stuff is way too hard to maintain - needs rework.] |
| 52 I don't think it's that bad in the main. I've done a fair amount of | |
| 53 cleanup work over the ages; the only stuff that's probably still somewhat | |
| 54 messy is the command-builder handling, which is that way because it's | |
| 55 trying to be "compatible" with pseudo-standards established by Emacs | |
| 56 v18. | |
| 428 | 57 |
| 58 The command builder should deal only with key and button events. | |
| 59 Other command events should be able to come in the MIDDLE of a key | |
| 60 sequence, without disturbing the key sequence composition, or the | |
| 61 command builder structure representing it. | |
| 62 | |
| 63 Someone should rethink universal-argument and figure out how an | |
| 64 arbitrary command can influence the next command (universal-argument | |
| 65 or universal-coding-system-argument) or the next key (hyperify). | |
| 66 | |
| 67 Both C-h and Help in the middle of a key sequence should trigger | |
| 68 prefix-help-command. help-char is stupid. Maybe we need | |
| 69 keymap-of-last-resort? | |
| 70 | |
| 71 After prefix-help is run, one should be able to CONTINUE TYPING, | |
| 72 instead of RETYPING, the key sequence. | |
| 73 */ | |
| 74 | |
| 75 #include <config.h> | |
| 76 #include "lisp.h" | |
| 77 | |
| 78 #include "blocktype.h" | |
| 79 #include "buffer.h" | |
| 80 #include "commands.h" | |
| 872 | 81 #include "device-impl.h" |
| 428 | 82 #include "elhash.h" |
| 83 #include "events.h" | |
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84 #include "extents.h" |
| 872 | 85 #include "frame-impl.h" |
| 428 | 86 #include "insdel.h" /* for buffer_reset_changes */ |
| 87 #include "keymap.h" | |
| 88 #include "lstream.h" | |
| 89 #include "macros.h" /* for defining_keyboard_macro */ | |
| 442 | 90 #include "menubar.h" /* #### for evil kludges. */ |
| 428 | 91 #include "process.h" |
| 1292 | 92 #include "profile.h" |
| 872 | 93 #include "window-impl.h" |
| 428 | 94 |
| 95 #include "sysdep.h" /* init_poll_for_quit() */ | |
| 96 #include "syssignal.h" /* SIGCHLD, etc. */ | |
| 97 #include "sysfile.h" | |
| 98 #include "systime.h" /* to set Vlast_input_time */ | |
| 99 | |
| 100 #include "file-coding.h" | |
| 101 | |
| 102 #include <errno.h> | |
| 103 | |
| 104 /* The number of keystrokes between auto-saves. */ | |
| 458 | 105 static Fixnum auto_save_interval; |
| 428 | 106 |
| 107 Lisp_Object Qundefined_keystroke_sequence; | |
| 563 | 108 Lisp_Object Qinvalid_key_binding; |
| 428 | 109 |
| 110 Lisp_Object Qcommand_event_p; | |
| 111 | |
| 112 /* Hooks to run before and after each command. */ | |
| 113 Lisp_Object Vpre_command_hook, Vpost_command_hook; | |
| 114 Lisp_Object Qpre_command_hook, Qpost_command_hook; | |
| 115 | |
| 442 | 116 /* See simple.el */ |
| 117 Lisp_Object Qhandle_pre_motion_command, Qhandle_post_motion_command; | |
| 118 | |
| 428 | 119 /* Hook run when XEmacs is about to be idle. */ |
| 120 Lisp_Object Qpre_idle_hook, Vpre_idle_hook; | |
| 121 | |
| 122 /* Control gratuitous keyboard focus throwing. */ | |
| 123 int focus_follows_mouse; | |
| 124 | |
| 444 | 125 /* When true, modifier keys are sticky. */ |
| 442 | 126 int modifier_keys_are_sticky; |
| 444 | 127 /* Modifier keys are sticky for this many milliseconds. */ |
| 128 Lisp_Object Vmodifier_keys_sticky_time; | |
| 129 | |
| 2828 | 130 /* If true, "Russian C-x processing" is enabled. */ |
| 131 int try_alternate_layouts_for_commands; | |
| 132 | |
| 444 | 133 /* Here FSF Emacs 20.7 defines Vpost_command_idle_hook, |
| 134 post_command_idle_delay, Vdeferred_action_list, and | |
| 135 Vdeferred_action_function, but we don't because that stuff is crap, | |
| 1315 | 136 and we're smarter than them, and their mommas are fat. */ |
| 444 | 137 |
| 138 /* FSF Emacs 20.7 also defines Vinput_method_function, | |
| 139 Qinput_method_exit_on_first_char and Qinput_method_use_echo_area. | |
| 1315 | 140 I don't know whether this should be imported or not. */ |
| 428 | 141 |
| 142 /* Non-nil disable property on a command means | |
| 143 do not execute it; call disabled-command-hook's value instead. */ | |
| 733 | 144 Lisp_Object Qdisabled; |
| 428 | 145 |
| 146 /* Last keyboard or mouse input event read as a command. */ | |
| 147 Lisp_Object Vlast_command_event; | |
| 148 | |
| 149 /* The nearest ASCII equivalent of the above. */ | |
| 150 Lisp_Object Vlast_command_char; | |
| 151 | |
| 152 /* Last keyboard or mouse event read for any purpose. */ | |
| 153 Lisp_Object Vlast_input_event; | |
| 154 | |
| 155 /* The nearest ASCII equivalent of the above. */ | |
| 156 Lisp_Object Vlast_input_char; | |
| 157 | |
| 158 Lisp_Object Vcurrent_mouse_event; | |
| 159 | |
| 160 /* This is fbound in cmdloop.el, see the commentary there */ | |
| 161 Lisp_Object Qcancel_mode_internal; | |
| 162 | |
| 163 /* If not Qnil, event objects to be read as the next command input */ | |
| 164 Lisp_Object Vunread_command_events; | |
| 165 Lisp_Object Vunread_command_event; /* obsoleteness support */ | |
| 166 | |
| 167 static Lisp_Object Qunread_command_events, Qunread_command_event; | |
| 168 | |
| 169 /* Previous command, represented by a Lisp object. | |
| 442 | 170 Does not include prefix commands and arg setting commands. */ |
| 428 | 171 Lisp_Object Vlast_command; |
| 172 | |
| 442 | 173 /* Contents of this-command-properties for the last command. */ |
| 174 Lisp_Object Vlast_command_properties; | |
| 175 | |
| 428 | 176 /* If a command sets this, the value goes into |
| 442 | 177 last-command for the next command. */ |
| 428 | 178 Lisp_Object Vthis_command; |
| 179 | |
| 442 | 180 /* If a command sets this, the value goes into |
| 181 last-command-properties for the next command. */ | |
| 182 Lisp_Object Vthis_command_properties; | |
| 183 | |
| 428 | 184 /* The value of point when the last command was executed. */ |
| 665 | 185 Charbpos last_point_position; |
| 428 | 186 |
| 187 /* The frame that was current when the last command was started. */ | |
| 188 Lisp_Object Vlast_selected_frame; | |
| 189 | |
| 190 /* The buffer that was current when the last command was started. */ | |
| 191 Lisp_Object last_point_position_buffer; | |
| 192 | |
| 193 /* A (16bit . 16bit) representation of the time of the last-command-event. */ | |
| 194 Lisp_Object Vlast_input_time; | |
| 195 | |
| 196 /* A (16bit 16bit usec) representation of the time | |
| 197 of the last-command-event. */ | |
| 198 Lisp_Object Vlast_command_event_time; | |
| 199 | |
| 200 /* Character to recognize as the help char. */ | |
| 201 Lisp_Object Vhelp_char; | |
| 202 | |
| 203 /* Form to execute when help char is typed. */ | |
| 204 Lisp_Object Vhelp_form; | |
| 205 | |
| 206 /* Command to run when the help character follows a prefix key. */ | |
| 207 Lisp_Object Vprefix_help_command; | |
| 208 | |
| 209 /* Flag to tell QUIT that some interesting occurrence (e.g. a keypress) | |
| 210 may have happened. */ | |
| 211 volatile int something_happened; | |
| 212 | |
| 213 /* Hash table to translate keysyms through */ | |
| 214 Lisp_Object Vkeyboard_translate_table; | |
| 215 | |
| 216 /* If control-meta-super-shift-X is undefined, try control-meta-super-x */ | |
| 217 Lisp_Object Vretry_undefined_key_binding_unshifted; | |
| 218 Lisp_Object Qretry_undefined_key_binding_unshifted; | |
| 219 | |
| 220 /* Console that corresponds to our controlling terminal */ | |
| 221 Lisp_Object Vcontrolling_terminal; | |
| 222 | |
| 223 /* An event (actually an event chain linked through event_next) or Qnil. | |
| 224 */ | |
| 225 Lisp_Object Vthis_command_keys; | |
| 226 Lisp_Object Vthis_command_keys_tail; | |
| 227 | |
| 228 /* #### kludge! */ | |
| 229 Lisp_Object Qauto_show_make_point_visible; | |
| 230 | |
| 231 /* File in which we write all commands we read; an lstream */ | |
| 232 static Lisp_Object Vdribble_file; | |
| 233 | |
| 234 /* Recent keys ring location; a vector of events or nil-s */ | |
| 235 Lisp_Object Vrecent_keys_ring; | |
| 236 int recent_keys_ring_size; | |
| 237 int recent_keys_ring_index; | |
| 238 | |
| 239 /* Boolean specifying whether keystrokes should be added to | |
| 240 recent-keys. */ | |
| 241 int inhibit_input_event_recording; | |
| 242 | |
| 430 | 243 Lisp_Object Qself_insert_defer_undo; |
| 244 | |
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245 Lisp_Object Qsans_modifiers; |
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246 |
| 1268 | 247 int in_modal_loop; |
| 248 | |
| 249 /* the number of keyboard characters read. callint.c wants this. */ | |
| 250 Charcount num_input_chars; | |
| 428 | 251 |
| 1292 | 252 static Lisp_Object Qnext_event, Qdispatch_event, QSnext_event_internal; |
| 253 static Lisp_Object QSexecute_internal_event; | |
| 254 | |
| 428 | 255 #ifdef DEBUG_XEMACS |
| 458 | 256 Fixnum debug_emacs_events; |
| 428 | 257 |
| 258 static void | |
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259 external_debugging_print_event (const Ascbyte *event_description, |
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260 Lisp_Object event) |
| 428 | 261 { |
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262 write_ascstring (Qexternal_debugging_output, "("); |
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263 write_ascstring (Qexternal_debugging_output, event_description); |
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264 write_ascstring (Qexternal_debugging_output, ") "); |
| 428 | 265 print_internal (event, Qexternal_debugging_output, 1); |
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266 write_ascstring (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 | |
| 1204 | 334 static const struct memory_description command_builder_description [] = { |
| 934 | 335 { XD_LISP_OBJECT, offsetof (struct command_builder, current_events) }, |
| 336 { XD_LISP_OBJECT, offsetof (struct command_builder, most_current_event) }, | |
| 337 { XD_LISP_OBJECT, offsetof (struct command_builder, last_non_munged_event) }, | |
| 338 { XD_LISP_OBJECT, offsetof (struct command_builder, console) }, | |
| 1204 | 339 { XD_LISP_OBJECT_ARRAY, offsetof (struct command_builder, first_mungeable_event), 2 }, |
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340 { XD_LISP_OBJECT, offsetof (struct command_builder, echo_buf) }, |
| 934 | 341 { XD_END } |
| 342 }; | |
| 343 | |
| 428 | 344 static Lisp_Object |
| 345 mark_command_builder (Lisp_Object obj) | |
| 346 { | |
| 347 struct command_builder *builder = XCOMMAND_BUILDER (obj); | |
| 348 mark_object (builder->current_events); | |
| 349 mark_object (builder->most_current_event); | |
| 350 mark_object (builder->last_non_munged_event); | |
| 1204 | 351 mark_object (builder->first_mungeable_event[0]); |
| 352 mark_object (builder->first_mungeable_event[1]); | |
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353 mark_object (builder->echo_buf); |
| 428 | 354 return builder->console; |
| 355 } | |
| 356 | |
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357 DEFINE_NODUMP_LISP_OBJECT ("command-builder", command_builder, |
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358 mark_command_builder, |
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359 internal_object_printer, 0, 0, 0, |
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360 command_builder_description, |
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361 struct command_builder); |
| 771 | 362 |
| 428 | 363 static void |
| 364 reset_command_builder_event_chain (struct command_builder *builder) | |
| 365 { | |
| 366 builder->current_events = Qnil; | |
| 367 builder->most_current_event = Qnil; | |
| 368 builder->last_non_munged_event = Qnil; | |
| 1204 | 369 builder->first_mungeable_event[0] = Qnil; |
| 370 builder->first_mungeable_event[1] = Qnil; | |
| 428 | 371 } |
| 372 | |
| 373 Lisp_Object | |
| 771 | 374 allocate_command_builder (Lisp_Object console, int with_echo_buf) |
| 428 | 375 { |
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376 Lisp_Object builder_obj = ALLOC_NORMAL_LISP_OBJECT (command_builder); |
| 771 | 377 struct command_builder *builder = XCOMMAND_BUILDER (builder_obj); |
| 428 | 378 |
| 379 builder->console = console; | |
| 380 reset_command_builder_event_chain (builder); | |
| 771 | 381 if (with_echo_buf) |
| 382 { | |
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383 builder->echo_buf = make_uninit_string (300 * MAX_ICHAR_LEN); |
| 771 | 384 } |
| 385 else | |
| 386 { | |
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387 builder->echo_buf = Qnil; |
| 771 | 388 } |
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389 builder->echo_buf_fill_pointer = builder->echo_buf_end = -1; |
| 428 | 390 builder->self_insert_countdown = 0; |
| 391 | |
| 392 return builder_obj; | |
| 393 } | |
| 394 | |
| 771 | 395 /* Copy or clone COLLAPSING (copy to NEW_BUILDINGS if non-zero, |
| 396 otherwise clone); but don't copy the echo-buf stuff. (The calling | |
| 397 routines don't need it and will reset it, and we would rather avoid | |
| 398 malloc.) */ | |
| 399 | |
| 400 static Lisp_Object | |
| 401 copy_command_builder (struct command_builder *collapsing, | |
| 402 struct command_builder *new_buildings) | |
| 403 { | |
| 404 if (!new_buildings) | |
| 405 new_buildings = XCOMMAND_BUILDER (allocate_command_builder (Qnil, 0)); | |
| 406 | |
| 3358 | 407 new_buildings->console = collapsing->console; |
| 408 | |
| 771 | 409 new_buildings->self_insert_countdown = collapsing->self_insert_countdown; |
| 410 | |
| 411 deallocate_event_chain (new_buildings->current_events); | |
| 412 new_buildings->current_events = | |
| 413 copy_event_chain (collapsing->current_events); | |
| 414 | |
| 415 new_buildings->most_current_event = | |
| 416 transfer_event_chain_pointer (collapsing->most_current_event, | |
| 417 collapsing->current_events, | |
| 418 new_buildings->current_events); | |
| 419 new_buildings->last_non_munged_event = | |
| 420 transfer_event_chain_pointer (collapsing->last_non_munged_event, | |
| 421 collapsing->current_events, | |
| 422 new_buildings->current_events); | |
| 1204 | 423 new_buildings->first_mungeable_event[0] = |
| 424 transfer_event_chain_pointer (collapsing->first_mungeable_event[0], | |
| 771 | 425 collapsing->current_events, |
| 426 new_buildings->current_events); | |
| 1204 | 427 new_buildings->first_mungeable_event[1] = |
| 428 transfer_event_chain_pointer (collapsing->first_mungeable_event[1], | |
| 771 | 429 collapsing->current_events, |
| 430 new_buildings->current_events); | |
| 431 | |
| 432 return wrap_command_builder (new_buildings); | |
| 433 } | |
| 434 | |
| 435 static void | |
| 428 | 436 command_builder_append_event (struct command_builder *builder, |
| 437 Lisp_Object event) | |
| 438 { | |
| 439 assert (EVENTP (event)); | |
| 440 | |
| 771 | 441 event = Fcopy_event (event, Qnil); |
| 428 | 442 if (EVENTP (builder->most_current_event)) |
| 443 XSET_EVENT_NEXT (builder->most_current_event, event); | |
| 444 else | |
| 445 builder->current_events = event; | |
| 446 | |
| 447 builder->most_current_event = event; | |
| 1204 | 448 if (NILP (builder->first_mungeable_event[0])) |
| 449 builder->first_mungeable_event[0] = event; | |
| 450 if (NILP (builder->first_mungeable_event[1])) | |
| 451 builder->first_mungeable_event[1] = event; | |
| 428 | 452 } |
| 453 | |
| 454 | |
| 455 /**********************************************************************/ | |
| 456 /* Low-level interfaces onto event methods */ | |
| 457 /**********************************************************************/ | |
| 458 | |
| 459 static void | |
| 1268 | 460 check_event_stream_ok (void) |
| 428 | 461 { |
| 462 if (!event_stream && noninteractive) | |
| 814 | 463 /* See comment in init_event_stream() */ |
| 464 init_event_stream (); | |
| 465 else assert (event_stream); | |
| 428 | 466 } |
| 467 | |
| 468 void | |
| 440 | 469 event_stream_handle_magic_event (Lisp_Event *event) |
| 428 | 470 { |
| 1268 | 471 check_event_stream_ok (); |
| 428 | 472 event_stream->handle_magic_event_cb (event); |
| 473 } | |
| 474 | |
| 788 | 475 void |
| 476 event_stream_format_magic_event (Lisp_Event *event, Lisp_Object pstream) | |
| 477 { | |
| 1268 | 478 check_event_stream_ok (); |
| 788 | 479 event_stream->format_magic_event_cb (event, pstream); |
| 480 } | |
| 481 | |
| 482 int | |
| 483 event_stream_compare_magic_event (Lisp_Event *e1, Lisp_Event *e2) | |
| 484 { | |
| 1268 | 485 check_event_stream_ok (); |
| 788 | 486 return event_stream->compare_magic_event_cb (e1, e2); |
| 487 } | |
| 488 | |
| 489 Hashcode | |
| 490 event_stream_hash_magic_event (Lisp_Event *e) | |
| 491 { | |
| 1268 | 492 check_event_stream_ok (); |
| 788 | 493 return event_stream->hash_magic_event_cb (e); |
| 494 } | |
| 495 | |
| 428 | 496 static int |
| 497 event_stream_add_timeout (EMACS_TIME timeout) | |
| 498 { | |
| 1268 | 499 check_event_stream_ok (); |
| 428 | 500 return event_stream->add_timeout_cb (timeout); |
| 501 } | |
| 502 | |
| 503 static void | |
| 504 event_stream_remove_timeout (int id) | |
| 505 { | |
| 1268 | 506 check_event_stream_ok (); |
| 428 | 507 event_stream->remove_timeout_cb (id); |
| 508 } | |
| 509 | |
| 510 void | |
| 511 event_stream_select_console (struct console *con) | |
| 512 { | |
| 1268 | 513 check_event_stream_ok (); |
| 428 | 514 if (!con->input_enabled) |
| 515 { | |
| 516 event_stream->select_console_cb (con); | |
| 517 con->input_enabled = 1; | |
| 518 } | |
| 519 } | |
| 520 | |
| 521 void | |
| 522 event_stream_unselect_console (struct console *con) | |
| 523 { | |
| 1268 | 524 check_event_stream_ok (); |
| 428 | 525 if (con->input_enabled) |
| 526 { | |
| 527 event_stream->unselect_console_cb (con); | |
| 528 con->input_enabled = 0; | |
| 529 } | |
| 530 } | |
| 531 | |
| 532 void | |
| 853 | 533 event_stream_select_process (Lisp_Process *proc, int doin, int doerr) |
| 428 | 534 { |
| 853 | 535 int cur_in, cur_err; |
| 536 | |
| 1268 | 537 check_event_stream_ok (); |
| 853 | 538 |
| 539 cur_in = get_process_selected_p (proc, 0); | |
| 540 if (cur_in) | |
| 541 doin = 0; | |
| 542 | |
| 543 if (!process_has_separate_stderr (wrap_process (proc))) | |
| 428 | 544 { |
| 853 | 545 doerr = 0; |
| 546 cur_err = 0; | |
| 547 } | |
| 548 else | |
| 549 { | |
| 550 cur_err = get_process_selected_p (proc, 1); | |
| 551 if (cur_err) | |
| 552 doerr = 0; | |
| 553 } | |
| 554 | |
| 555 if (doin || doerr) | |
| 556 { | |
| 557 event_stream->select_process_cb (proc, doin, doerr); | |
| 558 set_process_selected_p (proc, cur_in || doin, cur_err || doerr); | |
| 428 | 559 } |
| 560 } | |
| 561 | |
| 562 void | |
| 853 | 563 event_stream_unselect_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->unselect_process_cb (proc, doin, doerr); | |
| 588 set_process_selected_p (proc, cur_in && !doin, cur_err && !doerr); | |
| 428 | 589 } |
| 590 } | |
| 591 | |
| 853 | 592 void |
| 593 event_stream_create_io_streams (void *inhandle, void *outhandle, | |
| 594 void *errhandle, Lisp_Object *instream, | |
| 595 Lisp_Object *outstream, | |
| 596 Lisp_Object *errstream, | |
| 597 USID *in_usid, | |
| 598 USID *err_usid, | |
| 599 int flags) | |
| 428 | 600 { |
| 1268 | 601 check_event_stream_ok (); |
| 853 | 602 event_stream->create_io_streams_cb |
| 603 (inhandle, outhandle, errhandle, instream, outstream, errstream, | |
| 604 in_usid, err_usid, flags); | |
| 428 | 605 } |
| 606 | |
| 853 | 607 void |
| 608 event_stream_delete_io_streams (Lisp_Object instream, | |
| 609 Lisp_Object outstream, | |
| 610 Lisp_Object errstream, | |
| 611 USID *in_usid, | |
| 612 USID *err_usid) | |
| 428 | 613 { |
| 1268 | 614 check_event_stream_ok (); |
| 853 | 615 event_stream->delete_io_streams_cb (instream, outstream, errstream, |
| 616 in_usid, err_usid); | |
| 428 | 617 } |
| 618 | |
| 442 | 619 static int |
| 620 event_stream_current_event_timestamp (struct console *c) | |
| 621 { | |
| 622 if (event_stream && event_stream->current_event_timestamp_cb) | |
| 623 return event_stream->current_event_timestamp_cb (c); | |
| 624 else | |
| 625 return 0; | |
| 626 } | |
| 428 | 627 |
| 628 | |
| 629 /**********************************************************************/ | |
| 630 /* Character prompting */ | |
| 631 /**********************************************************************/ | |
| 632 | |
| 633 static void | |
| 634 echo_key_event (struct command_builder *command_builder, | |
| 635 Lisp_Object event) | |
| 636 { | |
| 637 /* This function can GC */ | |
| 793 | 638 DECLARE_EISTRING_MALLOC (buf); |
|
5803
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5801
diff
changeset
|
639 Bytecount buf_fill_pointer = command_builder->echo_buf_fill_pointer; |
| 428 | 640 Bytecount len; |
| 641 | |
|
5803
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diff
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|
642 if (buf_fill_pointer < 0) |
| 428 | 643 { |
|
5803
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|
644 buf_fill_pointer = 0; |
| 428 | 645 clear_echo_area (selected_frame (), Qnil, 0); |
| 646 } | |
| 647 | |
| 934 | 648 format_event_object (buf, event, 1); |
| 793 | 649 len = eilen (buf); |
| 428 | 650 |
|
5803
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|
651 if (NILP (command_builder->echo_buf) || |
|
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|
652 (len + buf_fill_pointer + 4 > XSTRING_LENGTH (command_builder->echo_buf))) |
| 793 | 653 { |
| 654 eifree (buf); | |
| 655 return; | |
| 656 } | |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
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parents:
5801
diff
changeset
|
657 |
|
b79e1e02bf01
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parents:
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|
658 eicat_ascii (buf, " - "); |
|
b79e1e02bf01
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parents:
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diff
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|
659 |
|
b79e1e02bf01
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parents:
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diff
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|
660 memcpy (XSTRING_DATA (command_builder->echo_buf) + buf_fill_pointer, |
|
b79e1e02bf01
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parents:
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|
661 eidata (buf), eilen (buf)); |
|
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|
662 init_string_ascii_begin (command_builder->echo_buf); |
|
b79e1e02bf01
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diff
changeset
|
663 bump_string_modiff (command_builder->echo_buf); |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
664 sledgehammer_check_ascii_begin (command_builder->echo_buf); |
|
b79e1e02bf01
Preserve extent information in the command builder code.
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parents:
5801
diff
changeset
|
665 |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
666 command_builder->echo_buf_end = buf_fill_pointer + eilen (buf); |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
667 /* *Not* including the trailing " - ". */ |
|
b79e1e02bf01
Preserve extent information in the command builder code.
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parents:
5801
diff
changeset
|
668 command_builder->echo_buf_fill_pointer = buf_fill_pointer + len + 1; |
| 793 | 669 eifree (buf); |
| 428 | 670 } |
| 671 | |
| 672 static void | |
| 673 regenerate_echo_keys_from_this_command_keys (struct command_builder * | |
| 674 builder) | |
| 675 { | |
| 676 Lisp_Object event; | |
| 677 | |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
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parents:
5801
diff
changeset
|
678 builder->echo_buf_fill_pointer = builder->echo_buf_end = 0; |
|
b79e1e02bf01
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parents:
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diff
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|
679 if (STRINGP (builder->echo_buf)) |
|
b79e1e02bf01
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parents:
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diff
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|
680 { |
|
b79e1e02bf01
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parents:
5801
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|
681 detach_all_extents (builder->echo_buf); |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
682 } |
| 428 | 683 |
| 684 EVENT_CHAIN_LOOP (event, Vthis_command_keys) | |
| 685 echo_key_event (builder, event); | |
| 686 } | |
| 687 | |
| 688 static void | |
| 689 maybe_echo_keys (struct command_builder *command_builder, int no_snooze) | |
| 690 { | |
| 691 /* This function can GC */ | |
| 692 double echo_keystrokes; | |
| 693 struct frame *f = selected_frame (); | |
| 853 | 694 int depth = begin_dont_check_for_quit (); |
| 695 | |
| 428 | 696 /* Message turns off echoing unless more keystrokes turn it on again. */ |
| 697 if (echo_area_active (f) && !EQ (Qcommand, echo_area_status (f))) | |
| 853 | 698 goto done; |
| 428 | 699 |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
700 if (FIXNUMP (Vecho_keystrokes) || FLOATP (Vecho_keystrokes)) |
| 428 | 701 echo_keystrokes = extract_float (Vecho_keystrokes); |
| 702 else | |
| 703 echo_keystrokes = 0; | |
| 704 | |
| 705 if (minibuf_level == 0 | |
| 706 && echo_keystrokes > 0.0 | |
| 442 | 707 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID) |
| 708 && !x_kludge_lw_menu_active () | |
| 709 #endif | |
| 710 ) | |
| 428 | 711 { |
| 712 if (!no_snooze) | |
| 713 { | |
| 714 if (NILP (Fsit_for (Vecho_keystrokes, Qnil))) | |
| 715 /* input came in, so don't echo. */ | |
| 853 | 716 goto done; |
| 428 | 717 } |
| 718 | |
|
5803
b79e1e02bf01
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parents:
5801
diff
changeset
|
719 echo_area_message (f, NULL, command_builder->echo_buf, 0, |
|
b79e1e02bf01
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parents:
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diff
changeset
|
720 command_builder->echo_buf_end, Qcommand); |
| 428 | 721 } |
| 853 | 722 |
| 723 done: | |
| 724 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */ | |
| 725 unbind_to (depth); | |
| 428 | 726 } |
| 727 | |
| 728 static void | |
| 729 reset_key_echo (struct command_builder *command_builder, | |
| 730 int remove_echo_area_echo) | |
| 731 { | |
| 732 /* This function can GC */ | |
| 733 struct frame *f = selected_frame (); | |
| 734 | |
| 757 | 735 if (command_builder) |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
736 { |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
737 command_builder->echo_buf_fill_pointer = |
|
b79e1e02bf01
Preserve extent information in the command builder code.
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5801
diff
changeset
|
738 command_builder->echo_buf_end = -1; |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
739 } |
| 428 | 740 |
| 741 if (remove_echo_area_echo) | |
| 742 clear_echo_area (f, Qcommand, 0); | |
| 743 } | |
| 744 | |
| 745 | |
| 746 /**********************************************************************/ | |
| 747 /* random junk */ | |
| 748 /**********************************************************************/ | |
| 749 | |
| 750 /* NB: The following auto-save stuff is in keyboard.c in FSFmacs, and | |
| 751 keystrokes_since_auto_save is equivalent to the difference between | |
| 752 num_nonmacro_input_chars and last_auto_save. */ | |
| 753 | |
| 444 | 754 /* When an auto-save happens, record the number of keystrokes, and |
| 755 don't do again soon. */ | |
| 428 | 756 |
| 757 void | |
| 758 record_auto_save (void) | |
| 759 { | |
| 760 keystrokes_since_auto_save = 0; | |
| 761 } | |
| 762 | |
| 763 /* Make an auto save happen as soon as possible at command level. */ | |
| 764 | |
| 765 void | |
| 766 force_auto_save_soon (void) | |
| 767 { | |
| 768 keystrokes_since_auto_save = 1 + max (auto_save_interval, 20); | |
| 769 } | |
| 770 | |
| 771 static void | |
| 772 maybe_do_auto_save (void) | |
| 773 { | |
| 774 /* This function can call lisp */ | |
| 775 keystrokes_since_auto_save++; | |
| 776 if (auto_save_interval > 0 && | |
| 777 keystrokes_since_auto_save > max (auto_save_interval, 20) && | |
| 1268 | 778 !detect_input_pending (1)) |
| 428 | 779 { |
| 780 Fdo_auto_save (Qnil, Qnil); | |
| 781 record_auto_save (); | |
| 782 } | |
| 783 } | |
| 784 | |
| 785 static Lisp_Object | |
| 786 print_help (Lisp_Object object) | |
| 787 { | |
| 788 Fprinc (object, Qnil); | |
| 789 return Qnil; | |
| 790 } | |
| 791 | |
| 792 static void | |
| 793 execute_help_form (struct command_builder *command_builder, | |
| 794 Lisp_Object event) | |
| 795 { | |
| 796 /* This function can GC */ | |
| 797 Lisp_Object help = Qnil; | |
| 798 int speccount = specpdl_depth (); | |
|
5803
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parents:
5801
diff
changeset
|
799 Bytecount buf_fill_pointer = command_builder->echo_buf_fill_pointer; |
|
b79e1e02bf01
Preserve extent information in the command builder code.
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parents:
5801
diff
changeset
|
800 Bytecount buf_end = command_builder->echo_buf_end; |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
801 Lisp_Object echo = ((buf_fill_pointer <= 0) ? Qnil |
|
b79e1e02bf01
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parents:
5801
diff
changeset
|
802 : Fcopy_sequence (command_builder->echo_buf)); |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
803 |
| 428 | 804 struct gcpro gcpro1, gcpro2; |
| 805 GCPRO2 (echo, help); | |
| 806 | |
|
4775
1d61580e0cf7
Remove Fsave_window_excursion from window.c, it's overridden by Lisp.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4718
diff
changeset
|
807 record_unwind_protect (Feval, |
|
1d61580e0cf7
Remove Fsave_window_excursion from window.c, it's overridden by Lisp.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4718
diff
changeset
|
808 list2 (Qset_window_configuration, |
|
1d61580e0cf7
Remove Fsave_window_excursion from window.c, it's overridden by Lisp.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4718
diff
changeset
|
809 call0 (Qcurrent_window_configuration))); |
| 428 | 810 reset_key_echo (command_builder, 1); |
| 811 | |
|
4677
8f1ee2d15784
Support full Common Lisp multiple values in C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4528
diff
changeset
|
812 help = IGNORE_MULTIPLE_VALUES (Feval (Vhelp_form)); |
| 428 | 813 if (STRINGP (help)) |
|
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814 internal_with_output_to_temp_buffer (build_ascstring ("*Help*"), |
| 428 | 815 print_help, help, Qnil); |
| 816 Fnext_command_event (event, Qnil); | |
| 817 /* Remove the help from the frame */ | |
| 771 | 818 unbind_to (speccount); |
| 428 | 819 /* Hmmmm. Tricky. The unbind restores an old window configuration, |
| 820 apparently bypassing any setting of windows_structure_changed. | |
| 821 So we need to set it so that things get redrawn properly. */ | |
| 822 /* #### This is massive overkill. Look at doing it better once the | |
| 823 new redisplay is fully in place. */ | |
| 824 { | |
| 825 Lisp_Object frmcons, devcons, concons; | |
| 826 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 827 { | |
| 828 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 829 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 830 } | |
| 831 } | |
| 832 | |
| 833 redisplay (); | |
| 1204 | 834 if (event_matches_key_specifier_p (event, make_char (' '))) |
| 428 | 835 { |
| 836 /* Discard next key if it is a space */ | |
| 837 reset_key_echo (command_builder, 1); | |
| 838 Fnext_command_event (event, Qnil); | |
| 839 } | |
| 840 | |
|
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841 command_builder->echo_buf_fill_pointer = buf_fill_pointer; |
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842 command_builder->echo_buf_end = buf_end; |
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843 |
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844 if (buf_fill_pointer > 0) |
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845 { |
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846 command_builder->echo_buf = echo; |
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847 } |
| 428 | 848 UNGCPRO; |
| 849 } | |
| 850 | |
| 851 | |
| 852 /**********************************************************************/ | |
| 853 /* timeouts */ | |
| 854 /**********************************************************************/ | |
| 855 | |
| 593 | 856 /* NOTE: "Low-level" or "interval" timeouts are one-shot timeouts that |
| 857 measure single intervals. "High-level timeouts" or "wakeups" are | |
| 858 the objects generated by `add-timeout' or `add-async-timout' -- | |
| 859 they can fire repeatedly (and in fact can have a different initial | |
| 860 time and resignal time). Given the nature of both setitimer() and | |
| 861 select() -- i.e. all we get is a single one-shot timer -- we have | |
| 862 to decompose all high-level timeouts into a series of intervals or | |
| 863 low-level timeouts. | |
| 864 | |
| 865 Low-level timeouts are of two varieties: synchronous and asynchronous. | |
| 866 The former are handled at the window-system level, the latter in | |
| 867 signal.c. | |
| 868 */ | |
| 869 | |
| 870 /**** Low-level timeout helper functions. **** | |
| 428 | 871 |
| 872 These functions maintain a sorted list of one-shot timeouts (where | |
| 593 | 873 the timeouts are in absolute time so we never lose any time as a |
| 874 result of the delay between noting an interval and firing the next | |
| 875 one). They are intended for use by functions that need to convert | |
| 876 a list of absolute timeouts into a series of intervals to wait | |
| 877 for. */ | |
| 428 | 878 |
| 879 /* We ensure that 0 is never a valid ID, so that a value of 0 can be | |
| 880 used to indicate an absence of a timer. */ | |
| 881 static int low_level_timeout_id_tick; | |
| 882 | |
| 883 static struct low_level_timeout_blocktype | |
| 884 { | |
| 885 Blocktype_declare (struct low_level_timeout); | |
| 886 } *the_low_level_timeout_blocktype; | |
| 887 | |
| 888 /* Add a one-shot timeout at time TIME to TIMEOUT_LIST. Return | |
| 889 a unique ID identifying the timeout. */ | |
| 890 | |
| 891 int | |
| 892 add_low_level_timeout (struct low_level_timeout **timeout_list, | |
| 893 EMACS_TIME thyme) | |
| 894 { | |
| 895 struct low_level_timeout *tm; | |
| 896 struct low_level_timeout *t, **tt; | |
| 897 | |
| 898 /* Allocate a new time struct. */ | |
| 899 | |
| 900 tm = Blocktype_alloc (the_low_level_timeout_blocktype); | |
| 901 tm->next = NULL; | |
| 593 | 902 /* Don't just use ++low_level_timeout_id_tick, for the (admittedly |
| 903 rare) case in which numbers wrap around. */ | |
| 428 | 904 if (low_level_timeout_id_tick == 0) |
| 905 low_level_timeout_id_tick++; | |
| 906 tm->id = low_level_timeout_id_tick++; | |
| 907 tm->time = thyme; | |
| 908 | |
| 909 /* Add it to the queue. */ | |
| 910 | |
| 911 tt = timeout_list; | |
| 912 t = *tt; | |
| 913 while (t && EMACS_TIME_EQUAL_OR_GREATER (tm->time, t->time)) | |
| 914 { | |
| 915 tt = &t->next; | |
| 916 t = *tt; | |
| 917 } | |
| 918 tm->next = t; | |
| 919 *tt = tm; | |
| 920 | |
| 921 return tm->id; | |
| 922 } | |
| 923 | |
| 924 /* Remove the low-level timeout identified by ID from TIMEOUT_LIST. | |
| 925 If the timeout is not there, do nothing. */ | |
| 926 | |
| 927 void | |
| 928 remove_low_level_timeout (struct low_level_timeout **timeout_list, int id) | |
| 929 { | |
| 930 struct low_level_timeout *t, *prev; | |
| 931 | |
| 932 /* find it */ | |
| 933 | |
| 934 for (t = *timeout_list, prev = NULL; t && t->id != id; t = t->next) | |
| 935 prev = t; | |
| 936 | |
| 937 if (!t) | |
| 938 return; /* couldn't find it */ | |
| 939 | |
| 940 if (!prev) | |
| 941 *timeout_list = t->next; | |
| 942 else prev->next = t->next; | |
| 943 | |
| 944 Blocktype_free (the_low_level_timeout_blocktype, t); | |
| 945 } | |
| 946 | |
| 947 /* If there are timeouts on TIMEOUT_LIST, store the relative time | |
| 948 interval to the first timeout on the list into INTERVAL and | |
| 949 return 1. Otherwise, return 0. */ | |
| 950 | |
| 951 int | |
| 952 get_low_level_timeout_interval (struct low_level_timeout *timeout_list, | |
| 953 EMACS_TIME *interval) | |
| 954 { | |
| 955 if (!timeout_list) /* no timer events; block indefinitely */ | |
| 956 return 0; | |
| 957 else | |
| 958 { | |
| 959 EMACS_TIME current_time; | |
| 960 | |
| 961 /* The time to block is the difference between the first | |
| 962 (earliest) timer on the queue and the current time. | |
| 963 If that is negative, then the timer will fire immediately | |
| 964 but we still have to call select(), with a zero-valued | |
| 965 timeout: user events must have precedence over timer events. */ | |
| 966 EMACS_GET_TIME (current_time); | |
| 967 if (EMACS_TIME_GREATER (timeout_list->time, current_time)) | |
| 968 EMACS_SUB_TIME (*interval, timeout_list->time, | |
| 969 current_time); | |
| 970 else | |
| 971 EMACS_SET_SECS_USECS (*interval, 0, 0); | |
| 972 return 1; | |
| 973 } | |
| 974 } | |
| 975 | |
| 976 /* Pop the first (i.e. soonest) timeout off of TIMEOUT_LIST and return | |
| 977 its ID. Also, if TIME_OUT is not 0, store the absolute time of the | |
| 978 timeout into TIME_OUT. */ | |
| 979 | |
| 980 int | |
| 981 pop_low_level_timeout (struct low_level_timeout **timeout_list, | |
| 982 EMACS_TIME *time_out) | |
| 983 { | |
| 984 struct low_level_timeout *tm = *timeout_list; | |
| 985 int id; | |
| 986 | |
| 987 assert (tm); | |
| 988 id = tm->id; | |
| 989 if (time_out) | |
| 990 *time_out = tm->time; | |
| 991 *timeout_list = tm->next; | |
| 992 Blocktype_free (the_low_level_timeout_blocktype, tm); | |
| 993 return id; | |
| 994 } | |
| 995 | |
| 996 | |
| 593 | 997 /**** High-level timeout functions. **** */ |
| 998 | |
| 999 /* We ensure that 0 is never a valid ID, so that a value of 0 can be | |
| 1000 used to indicate an absence of a timer. */ | |
| 428 | 1001 static int timeout_id_tick; |
| 1002 | |
| 1003 static Lisp_Object pending_timeout_list, pending_async_timeout_list; | |
| 1004 | |
| 1005 static Lisp_Object | |
| 1006 mark_timeout (Lisp_Object obj) | |
| 1007 { | |
| 440 | 1008 Lisp_Timeout *tm = XTIMEOUT (obj); |
| 428 | 1009 mark_object (tm->function); |
| 1010 return tm->object; | |
| 1011 } | |
| 1012 | |
| 1204 | 1013 static const struct memory_description timeout_description[] = { |
| 440 | 1014 { XD_LISP_OBJECT, offsetof (Lisp_Timeout, function) }, |
| 1015 { XD_LISP_OBJECT, offsetof (Lisp_Timeout, object) }, | |
| 428 | 1016 { XD_END } |
| 1017 }; | |
| 1018 | |
|
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1019 DEFINE_DUMPABLE_INTERNAL_LISP_OBJECT ("timeout", timeout, |
|
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|
1020 mark_timeout, timeout_description, |
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|
1021 Lisp_Timeout); |
| 428 | 1022 |
| 1023 /* Generate a timeout and return its ID. */ | |
| 1024 | |
| 1025 int | |
| 1026 event_stream_generate_wakeup (unsigned int milliseconds, | |
| 1027 unsigned int vanilliseconds, | |
| 1028 Lisp_Object function, Lisp_Object object, | |
| 1029 int async_p) | |
| 1030 { | |
|
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1031 Lisp_Object op = ALLOC_NORMAL_LISP_OBJECT (timeout); |
| 440 | 1032 Lisp_Timeout *timeout = XTIMEOUT (op); |
| 428 | 1033 EMACS_TIME current_time; |
| 1034 EMACS_TIME interval; | |
| 1035 | |
| 593 | 1036 /* Don't just use ++timeout_id_tick, for the (admittedly rare) case |
| 1037 in which numbers wrap around. */ | |
| 1038 if (timeout_id_tick == 0) | |
| 1039 timeout_id_tick++; | |
| 428 | 1040 timeout->id = timeout_id_tick++; |
| 1041 timeout->resignal_msecs = vanilliseconds; | |
| 1042 timeout->function = function; | |
| 1043 timeout->object = object; | |
| 1044 | |
| 1045 EMACS_GET_TIME (current_time); | |
| 1046 EMACS_SET_SECS_USECS (interval, milliseconds / 1000, | |
| 1047 1000 * (milliseconds % 1000)); | |
| 1048 EMACS_ADD_TIME (timeout->next_signal_time, current_time, interval); | |
| 1049 | |
| 1050 if (async_p) | |
| 1051 { | |
| 1052 timeout->interval_id = | |
| 593 | 1053 signal_add_async_interval_timeout (timeout->next_signal_time); |
| 1054 pending_async_timeout_list = | |
| 1055 noseeum_cons (op, pending_async_timeout_list); | |
| 428 | 1056 } |
| 1057 else | |
| 1058 { | |
| 1059 timeout->interval_id = | |
| 1060 event_stream_add_timeout (timeout->next_signal_time); | |
| 1061 pending_timeout_list = noseeum_cons (op, pending_timeout_list); | |
| 1062 } | |
| 1063 return timeout->id; | |
| 1064 } | |
| 1065 | |
| 1066 /* Given the INTERVAL-ID of a timeout just signalled, resignal the timeout | |
| 1067 as necessary and return the timeout's ID and function and object slots. | |
| 1068 | |
| 1069 This should be called as a result of receiving notice that a timeout | |
| 1070 has fired. INTERVAL-ID is *not* the timeout's ID, but is the ID that | |
| 1071 identifies this particular firing of the timeout. INTERVAL-ID's and | |
| 1072 timeout ID's are in separate number spaces and bear no relation to | |
| 1073 each other. The INTERVAL-ID is all that the event callback routines | |
| 1074 work with: they work only with one-shot intervals, not with timeouts | |
| 1075 that may fire repeatedly. | |
| 1076 | |
| 1077 NOTE: The returned FUNCTION and OBJECT are *not* GC-protected at all. | |
| 1078 */ | |
| 1079 | |
| 593 | 1080 int |
| 428 | 1081 event_stream_resignal_wakeup (int interval_id, int async_p, |
| 1082 Lisp_Object *function, Lisp_Object *object) | |
| 1083 { | |
| 1084 Lisp_Object op = Qnil, rest; | |
| 440 | 1085 Lisp_Timeout *timeout; |
| 428 | 1086 Lisp_Object *timeout_list; |
| 1087 struct gcpro gcpro1; | |
| 1088 int id; | |
| 1089 | |
| 1090 GCPRO1 (op); /* just in case ... because it's removed from the list | |
| 1091 for awhile. */ | |
| 1092 | |
| 1093 timeout_list = async_p ? &pending_async_timeout_list : &pending_timeout_list; | |
| 1094 | |
| 1095 /* Find the timeout on the list of pending ones. */ | |
| 1096 LIST_LOOP (rest, *timeout_list) | |
| 1097 { | |
| 1098 timeout = XTIMEOUT (XCAR (rest)); | |
| 1099 if (timeout->interval_id == interval_id) | |
| 1100 break; | |
| 1101 } | |
| 1102 | |
| 1103 assert (!NILP (rest)); | |
| 1104 op = XCAR (rest); | |
| 1105 timeout = XTIMEOUT (op); | |
| 1106 /* We make sure to snarf the data out of the timeout object before | |
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1107 we free it with free_normal_lisp_object(). */ |
| 428 | 1108 id = timeout->id; |
| 1109 *function = timeout->function; | |
| 1110 *object = timeout->object; | |
| 1111 | |
| 1112 /* Remove this one from the list of pending timeouts */ | |
| 1113 *timeout_list = delq_no_quit_and_free_cons (op, *timeout_list); | |
| 1114 | |
| 1115 /* If this timeout wants to be resignalled, do it now. */ | |
| 1116 if (timeout->resignal_msecs) | |
| 1117 { | |
| 1118 EMACS_TIME current_time; | |
| 1119 EMACS_TIME interval; | |
| 1120 | |
| 1121 /* Determine the time that the next resignalling should occur. | |
| 1122 We do that by adding the interval time to the last signalled | |
| 1123 time until we get a time that's current. | |
| 1124 | |
| 1125 (This way, it doesn't matter if the timeout was signalled | |
| 1126 exactly when we asked for it, or at some time later.) | |
| 1127 */ | |
| 1128 EMACS_GET_TIME (current_time); | |
| 1129 EMACS_SET_SECS_USECS (interval, timeout->resignal_msecs / 1000, | |
| 1130 1000 * (timeout->resignal_msecs % 1000)); | |
| 1131 do | |
| 1132 { | |
| 1133 EMACS_ADD_TIME (timeout->next_signal_time, timeout->next_signal_time, | |
| 1134 interval); | |
| 1135 } while (EMACS_TIME_GREATER (current_time, timeout->next_signal_time)); | |
| 1136 | |
| 1137 if (async_p) | |
| 1138 timeout->interval_id = | |
| 593 | 1139 signal_add_async_interval_timeout (timeout->next_signal_time); |
| 428 | 1140 else |
| 1141 timeout->interval_id = | |
| 1142 event_stream_add_timeout (timeout->next_signal_time); | |
| 1143 /* Add back onto the list. Note that the effect of this | |
| 1144 is to move frequently-hit timeouts to the front of the | |
| 1145 list, which is a good thing. */ | |
| 1146 *timeout_list = noseeum_cons (op, *timeout_list); | |
| 1147 } | |
| 1148 else | |
|
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|
1149 free_normal_lisp_object (op); |
| 428 | 1150 |
| 1151 UNGCPRO; | |
| 1152 return id; | |
| 1153 } | |
| 1154 | |
| 1155 void | |
| 1156 event_stream_disable_wakeup (int id, int async_p) | |
| 1157 { | |
| 440 | 1158 Lisp_Timeout *timeout = 0; |
| 428 | 1159 Lisp_Object rest; |
| 1160 Lisp_Object *timeout_list; | |
| 1161 | |
| 1162 if (async_p) | |
| 1163 timeout_list = &pending_async_timeout_list; | |
| 1164 else | |
| 1165 timeout_list = &pending_timeout_list; | |
| 1166 | |
| 1167 /* Find the timeout on the list of pending ones, if it's still there. */ | |
| 1168 LIST_LOOP (rest, *timeout_list) | |
| 1169 { | |
| 1170 timeout = XTIMEOUT (XCAR (rest)); | |
| 1171 if (timeout->id == id) | |
| 1172 break; | |
| 1173 } | |
| 1174 | |
| 1175 /* If we found it, remove it from the list and disable the pending | |
| 1176 one-shot. */ | |
| 1177 if (!NILP (rest)) | |
| 1178 { | |
| 1179 Lisp_Object op = XCAR (rest); | |
| 1180 *timeout_list = | |
| 1181 delq_no_quit_and_free_cons (op, *timeout_list); | |
| 1182 if (async_p) | |
| 593 | 1183 signal_remove_async_interval_timeout (timeout->interval_id); |
| 428 | 1184 else |
| 1185 event_stream_remove_timeout (timeout->interval_id); | |
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1186 free_normal_lisp_object (op); |
| 428 | 1187 } |
| 1188 } | |
| 1189 | |
| 1190 static int | |
| 1191 event_stream_wakeup_pending_p (int id, int async_p) | |
| 1192 { | |
| 440 | 1193 Lisp_Timeout *timeout; |
| 428 | 1194 Lisp_Object rest; |
| 1195 Lisp_Object timeout_list; | |
| 1196 int found = 0; | |
| 1197 | |
| 1198 | |
| 1199 if (async_p) | |
| 1200 timeout_list = pending_async_timeout_list; | |
| 1201 else | |
| 1202 timeout_list = pending_timeout_list; | |
| 1203 | |
| 1204 /* Find the element on the list of pending ones, if it's still there. */ | |
| 1205 LIST_LOOP (rest, timeout_list) | |
| 1206 { | |
| 1207 timeout = XTIMEOUT (XCAR (rest)); | |
| 1208 if (timeout->id == id) | |
| 1209 { | |
| 1210 found = 1; | |
| 1211 break; | |
| 1212 } | |
| 1213 } | |
| 1214 | |
| 1215 return found; | |
| 1216 } | |
| 1217 | |
| 1218 | |
| 1219 /**** Lisp-level timeout functions. ****/ | |
| 1220 | |
| 1221 static unsigned long | |
| 1222 lisp_number_to_milliseconds (Lisp_Object secs, int allow_0) | |
| 1223 { | |
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1224 Lisp_Object args[] = { allow_0 ? Qzero : make_fixnum (1), |
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1225 secs, |
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1226 /* (((unsigned int) 0xFFFFFFFF) / 1000) - 1 */ |
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1227 make_fixnum (4294967 - 1) }; |
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1228 |
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1229 if (!allow_0 && FLOATP (secs) && XFLOAT_DATA (secs) > 0) |
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1230 { |
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1231 args[0] = secs; |
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1232 } |
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1233 |
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1234 if (NILP (Fleq (countof (args), args))) |
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1235 { |
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1236 args_out_of_range_3 (secs, args[0], args[2]); |
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1237 } |
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1238 |
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1239 args[0] = make_fixnum (1000); |
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1240 args[0] = Ftimes (2, args); |
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1241 |
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1242 if (FIXNUMP (args[0])) |
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1243 { |
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1244 return XFIXNUM (args[0]); |
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1245 } |
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1246 |
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1247 return (unsigned long) extract_float (args[0]); |
| 428 | 1248 } |
| 1249 | |
| 1250 DEFUN ("add-timeout", Fadd_timeout, 3, 4, 0, /* | |
| 1251 Add a timeout, to be signaled after the timeout period has elapsed. | |
| 1252 SECS is a number of seconds, expressed as an integer or a float. | |
| 1253 FUNCTION will be called after that many seconds have elapsed, with one | |
| 1254 argument, the given OBJECT. If the optional RESIGNAL argument is provided, | |
| 1255 then after this timeout expires, `add-timeout' will automatically be called | |
| 1256 again with RESIGNAL as the first argument. | |
| 1257 | |
| 1258 This function returns an object which is the id number of this particular | |
| 1259 timeout. You can pass that object to `disable-timeout' to turn off the | |
| 1260 timeout before it has been signalled. | |
| 1261 | |
| 1262 NOTE: Id numbers as returned by this function are in a distinct namespace | |
| 1263 from those returned by `add-async-timeout'. This means that the same id | |
| 1264 number could refer to a pending synchronous timeout and a different pending | |
| 1265 asynchronous timeout, and that you cannot pass an id from `add-timeout' | |
| 1266 to `disable-async-timeout', or vice-versa. | |
| 1267 | |
| 1268 The number of seconds may be expressed as a floating-point number, in which | |
| 1269 case some fractional part of a second will be used. Caveat: the usable | |
| 1270 timeout granularity will vary from system to system. | |
| 1271 | |
| 1272 Adding a timeout causes a timeout event to be returned by `next-event', and | |
| 1273 the function will be invoked by `dispatch-event,' so if emacs is in a tight | |
| 1274 loop, the function will not be invoked until the next call to sit-for or | |
| 1275 until the return to top-level (the same is true of process filters). | |
| 1276 | |
| 1277 If you need to have a timeout executed even when XEmacs is in the midst of | |
| 1278 running Lisp code, use `add-async-timeout'. | |
| 1279 | |
| 1280 WARNING: if you are thinking of calling add-timeout from inside of a | |
| 1281 callback function as a way of resignalling a timeout, think again. There | |
| 1282 is a race condition. That's why the RESIGNAL argument exists. | |
| 1283 */ | |
| 1284 (secs, function, object, resignal)) | |
| 1285 { | |
| 1286 unsigned long msecs = lisp_number_to_milliseconds (secs, 0); | |
| 1287 unsigned long msecs2 = (NILP (resignal) ? 0 : | |
| 1288 lisp_number_to_milliseconds (resignal, 0)); | |
| 1289 int id; | |
| 1290 Lisp_Object lid; | |
| 1291 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 0); | |
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1292 lid = make_fixnum (id); |
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1293 assert (id == XFIXNUM (lid)); |
| 428 | 1294 return lid; |
| 1295 } | |
| 1296 | |
| 1297 DEFUN ("disable-timeout", Fdisable_timeout, 1, 1, 0, /* | |
| 1298 Disable a timeout from signalling any more. | |
| 1299 ID should be a timeout id number as returned by `add-timeout'. If ID | |
| 1300 corresponds to a one-shot timeout that has already signalled, nothing | |
| 1301 will happen. | |
| 1302 | |
| 1303 It will not work to call this function on an id number returned by | |
| 1304 `add-async-timeout'. Use `disable-async-timeout' for that. | |
| 1305 */ | |
| 1306 (id)) | |
| 1307 { | |
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1308 CHECK_FIXNUM (id); |
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1309 event_stream_disable_wakeup (XFIXNUM (id), 0); |
| 428 | 1310 return Qnil; |
| 1311 } | |
| 1312 | |
| 1313 DEFUN ("add-async-timeout", Fadd_async_timeout, 3, 4, 0, /* | |
| 1314 Add an asynchronous timeout, to be signaled after an interval has elapsed. | |
| 1315 SECS is a number of seconds, expressed as an integer or a float. | |
| 1316 FUNCTION will be called after that many seconds have elapsed, with one | |
| 1317 argument, the given OBJECT. If the optional RESIGNAL argument is provided, | |
| 1318 then after this timeout expires, `add-async-timeout' will automatically be | |
| 1319 called again with RESIGNAL as the first argument. | |
| 1320 | |
| 1321 This function returns an object which is the id number of this particular | |
| 1322 timeout. You can pass that object to `disable-async-timeout' to turn off | |
| 1323 the timeout before it has been signalled. | |
| 1324 | |
| 1325 NOTE: Id numbers as returned by this function are in a distinct namespace | |
| 1326 from those returned by `add-timeout'. This means that the same id number | |
| 1327 could refer to a pending synchronous timeout and a different pending | |
| 1328 asynchronous timeout, and that you cannot pass an id from | |
| 1329 `add-async-timeout' to `disable-timeout', or vice-versa. | |
| 1330 | |
| 1331 The number of seconds may be expressed as a floating-point number, in which | |
| 1332 case some fractional part of a second will be used. Caveat: the usable | |
| 1333 timeout granularity will vary from system to system. | |
| 1334 | |
| 1335 Adding an asynchronous timeout causes the function to be invoked as soon | |
| 1336 as the timeout occurs, even if XEmacs is in the midst of executing some | |
| 1337 other code. (This is unlike the synchronous timeouts added with | |
| 1338 `add-timeout', where the timeout will only be signalled when XEmacs is | |
| 1339 waiting for events, i.e. the next return to top-level or invocation of | |
| 1340 `sit-for' or related functions.) This means that the function that is | |
| 1341 called *must* not signal an error or change any global state (e.g. switch | |
| 1342 buffers or windows) except when locking code is in place to make sure | |
| 1343 that race conditions don't occur in the interaction between the | |
| 1344 asynchronous timeout function and other code. | |
| 1345 | |
| 1346 Under most circumstances, you should use `add-timeout' instead, as it is | |
| 1347 much safer. Asynchronous timeouts should only be used when such behavior | |
| 1348 is really necessary. | |
| 1349 | |
| 1350 Asynchronous timeouts are blocked and will not occur when `inhibit-quit' | |
| 1351 is non-nil. As soon as `inhibit-quit' becomes nil again, any pending | |
| 1352 asynchronous timeouts will get called immediately. (Multiple occurrences | |
| 1353 of the same asynchronous timeout are not queued, however.) While the | |
| 1354 callback function of an asynchronous timeout is invoked, `inhibit-quit' | |
| 1355 is automatically bound to non-nil, and thus other asynchronous timeouts | |
| 1356 will be blocked unless the callback function explicitly sets `inhibit-quit' | |
| 1357 to nil. | |
| 1358 | |
| 1359 WARNING: if you are thinking of calling `add-async-timeout' from inside of a | |
| 1360 callback function as a way of resignalling a timeout, think again. There | |
| 1361 is a race condition. That's why the RESIGNAL argument exists. | |
| 1362 */ | |
| 1363 (secs, function, object, resignal)) | |
| 1364 { | |
| 1365 unsigned long msecs = lisp_number_to_milliseconds (secs, 0); | |
| 1366 unsigned long msecs2 = (NILP (resignal) ? 0 : | |
| 1367 lisp_number_to_milliseconds (resignal, 0)); | |
| 1368 int id; | |
| 1369 Lisp_Object lid; | |
| 1370 id = event_stream_generate_wakeup (msecs, msecs2, function, object, 1); | |
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1371 lid = make_fixnum (id); |
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1372 assert (id == XFIXNUM (lid)); |
| 428 | 1373 return lid; |
| 1374 } | |
| 1375 | |
| 1376 DEFUN ("disable-async-timeout", Fdisable_async_timeout, 1, 1, 0, /* | |
| 1377 Disable an asynchronous timeout from signalling any more. | |
| 1378 ID should be a timeout id number as returned by `add-async-timeout'. If ID | |
| 1379 corresponds to a one-shot timeout that has already signalled, nothing | |
| 1380 will happen. | |
| 1381 | |
| 1382 It will not work to call this function on an id number returned by | |
| 1383 `add-timeout'. Use `disable-timeout' for that. | |
| 1384 */ | |
| 1385 (id)) | |
| 1386 { | |
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1387 CHECK_FIXNUM (id); |
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1388 event_stream_disable_wakeup (XFIXNUM (id), 1); |
| 428 | 1389 return Qnil; |
| 1390 } | |
| 1391 | |
| 1392 | |
| 1393 /**********************************************************************/ | |
| 1394 /* enqueuing and dequeuing events */ | |
| 1395 /**********************************************************************/ | |
| 1396 | |
| 1397 /* Add an event to the back of the command-event queue: it will be the next | |
| 1398 event read after all pending events. This only works on keyboard, | |
| 1399 mouse-click, misc-user, and eval events. | |
| 1400 */ | |
| 1401 static void | |
| 1402 enqueue_command_event (Lisp_Object event) | |
| 1403 { | |
| 1404 enqueue_event (event, &command_event_queue, &command_event_queue_tail); | |
| 1405 } | |
| 1406 | |
| 1407 static Lisp_Object | |
| 1408 dequeue_command_event (void) | |
| 1409 { | |
| 1410 return dequeue_event (&command_event_queue, &command_event_queue_tail); | |
| 1411 } | |
| 1412 | |
| 1204 | 1413 void |
| 1414 enqueue_dispatch_event (Lisp_Object event) | |
| 1415 { | |
| 1416 enqueue_event (event, &dispatch_event_queue, &dispatch_event_queue_tail); | |
| 1417 } | |
| 1418 | |
| 1419 Lisp_Object | |
| 1420 dequeue_dispatch_event (void) | |
| 1421 { | |
| 1422 return dequeue_event (&dispatch_event_queue, &dispatch_event_queue_tail); | |
| 1423 } | |
| 1424 | |
| 428 | 1425 static void |
| 1426 enqueue_command_event_1 (Lisp_Object event_to_copy) | |
| 1427 { | |
| 853 | 1428 enqueue_command_event (Fcopy_event (event_to_copy, Qnil)); |
| 428 | 1429 } |
| 1430 | |
| 1431 void | |
| 1432 enqueue_magic_eval_event (void (*fun) (Lisp_Object), Lisp_Object object) | |
| 1433 { | |
| 1434 Lisp_Object event = Fmake_event (Qnil, Qnil); | |
| 934 | 1435 XSET_EVENT_TYPE (event, magic_eval_event); |
| 1436 /* channel for magic_eval events is nil */ | |
| 1204 | 1437 XSET_EVENT_MAGIC_EVAL_INTERNAL_FUNCTION (event, fun); |
| 1438 XSET_EVENT_MAGIC_EVAL_OBJECT (event, object); | |
| 428 | 1439 enqueue_command_event (event); |
| 1440 } | |
| 1441 | |
| 1442 DEFUN ("enqueue-eval-event", Fenqueue_eval_event, 2, 2, 0, /* | |
| 1443 Add an eval event to the back of the eval event queue. | |
| 1444 When this event is dispatched, FUNCTION (which should be a function | |
| 1445 of one argument) will be called with OBJECT as its argument. | |
| 1446 See `next-event' for a description of event types and how events | |
| 1447 are received. | |
| 1448 */ | |
| 1449 (function, object)) | |
| 1450 { | |
| 1451 Lisp_Object event = Fmake_event (Qnil, Qnil); | |
| 1452 | |
| 934 | 1453 XSET_EVENT_TYPE (event, eval_event); |
| 1454 /* channel for eval events is nil */ | |
| 1204 | 1455 XSET_EVENT_EVAL_FUNCTION (event, function); |
| 1456 XSET_EVENT_EVAL_OBJECT (event, object); | |
| 428 | 1457 enqueue_command_event (event); |
| 1458 | |
| 1459 return event; | |
| 1460 } | |
| 1461 | |
| 1462 Lisp_Object | |
| 1463 enqueue_misc_user_event (Lisp_Object channel, Lisp_Object function, | |
| 1464 Lisp_Object object) | |
| 1465 { | |
| 1466 Lisp_Object event = Fmake_event (Qnil, Qnil); | |
| 934 | 1467 XSET_EVENT_TYPE (event, misc_user_event); |
| 1468 XSET_EVENT_CHANNEL (event, channel); | |
| 1204 | 1469 XSET_EVENT_MISC_USER_FUNCTION (event, function); |
| 1470 XSET_EVENT_MISC_USER_OBJECT (event, object); | |
| 1471 XSET_EVENT_MISC_USER_BUTTON (event, 0); | |
| 1472 XSET_EVENT_MISC_USER_MODIFIERS (event, 0); | |
| 1473 XSET_EVENT_MISC_USER_X (event, -1); | |
| 1474 XSET_EVENT_MISC_USER_Y (event, -1); | |
| 428 | 1475 enqueue_command_event (event); |
| 1476 | |
| 1477 return event; | |
| 1478 } | |
| 1479 | |
| 1480 Lisp_Object | |
| 1481 enqueue_misc_user_event_pos (Lisp_Object channel, Lisp_Object function, | |
| 1482 Lisp_Object object, | |
| 1483 int button, int modifiers, int x, int y) | |
| 1484 { | |
| 1485 Lisp_Object event = Fmake_event (Qnil, Qnil); | |
| 1486 | |
| 934 | 1487 XSET_EVENT_TYPE (event, misc_user_event); |
| 1488 XSET_EVENT_CHANNEL (event, channel); | |
| 1204 | 1489 XSET_EVENT_MISC_USER_FUNCTION (event, function); |
| 1490 XSET_EVENT_MISC_USER_OBJECT (event, object); | |
| 1491 XSET_EVENT_MISC_USER_BUTTON (event, button); | |
| 1492 XSET_EVENT_MISC_USER_MODIFIERS (event, modifiers); | |
| 1493 XSET_EVENT_MISC_USER_X (event, x); | |
| 1494 XSET_EVENT_MISC_USER_Y (event, y); | |
| 428 | 1495 enqueue_command_event (event); |
| 1496 | |
| 1497 return event; | |
| 1498 } | |
| 1499 | |
| 1500 | |
| 1501 /**********************************************************************/ | |
| 1502 /* focus-event handling */ | |
| 1503 /**********************************************************************/ | |
| 1504 | |
| 1505 /* | |
| 1506 | |
| 2367 | 1507 See also |
| 1508 | |
| 1509 (Info-goto-node "(internals)Focus Handling") | |
| 428 | 1510 */ |
| 1511 | |
| 2367 | 1512 |
| 428 | 1513 static void |
| 1514 run_select_frame_hook (void) | |
| 1515 { | |
| 1516 run_hook (Qselect_frame_hook); | |
| 1517 } | |
| 1518 | |
| 1519 static void | |
| 1520 run_deselect_frame_hook (void) | |
| 1521 { | |
| 1522 run_hook (Qdeselect_frame_hook); | |
| 1523 } | |
| 1524 | |
| 1525 /* When select-frame is called and focus_follows_mouse is false, we want | |
| 1526 to tell the window system that the focus should be changed to point to | |
| 1527 the new frame. However, | |
| 1528 sometimes Lisp functions will temporarily change the selected frame | |
| 1529 (e.g. to call a function that operates on the selected frame), | |
| 1530 and it's annoying if this focus-change happens exactly when | |
| 1531 select-frame is called, because then you get some flickering of the | |
| 1532 window-manager border and perhaps other undesirable results. We | |
| 1533 really only want to change the focus when we're about to retrieve | |
| 1534 an event from the user. To do this, we keep track of the frame | |
| 1535 where the window-manager focus lies on, and just before waiting | |
| 1536 for user events, check the currently selected frame and change | |
| 1537 the focus as necessary. | |
| 1538 | |
| 1539 On the other hand, if focus_follows_mouse is true, we need to switch the | |
| 1540 selected frame back to the frame with window manager focus just before we | |
| 1541 execute the next command in Fcommand_loop_1, just as the selected buffer is | |
| 1542 reverted after a set-buffer. | |
| 1543 | |
| 1544 Both cases are handled by this function. It must be called as appropriate | |
| 1545 from these two places, depending on the value of focus_follows_mouse. */ | |
| 1546 | |
| 1547 void | |
| 1548 investigate_frame_change (void) | |
| 1549 { | |
| 1550 Lisp_Object devcons, concons; | |
| 1551 | |
| 1552 /* if the selected frame was changed, change the window-system | |
| 1553 focus to the new frame. We don't do it when select-frame was | |
| 1554 called, to avoid flickering and other unwanted side effects when | |
| 1555 the frame is just changed temporarily. */ | |
| 1556 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 1557 { | |
| 1558 struct device *d = XDEVICE (XCAR (devcons)); | |
| 1559 Lisp_Object sel_frame = DEVICE_SELECTED_FRAME (d); | |
| 1560 | |
| 1561 /* You'd think that maybe we should use FRAME_WITH_FOCUS_REAL, | |
| 1562 but that can cause us to end up in an infinite loop focusing | |
| 1563 between two frames. It seems that since the call to `select-frame' | |
| 1564 in emacs_handle_focus_change_final() is based on the _FOR_HOOKS | |
| 1565 value, we need to do so too. */ | |
| 1566 if (!NILP (sel_frame) && | |
| 1567 !EQ (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d), sel_frame) && | |
| 1568 !NILP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d)) && | |
| 1569 !EQ (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d), sel_frame)) | |
| 1570 { | |
| 1571 /* At this point, we know that the frame has been changed. Now, if | |
| 1572 * focus_follows_mouse is not set, we finish off the frame change, | |
| 1573 * so that user events will now come from the new frame. Otherwise, | |
| 1574 * if focus_follows_mouse is set, no gratuitous frame changing | |
| 1575 * should take place. Set the focus back to the frame which was | |
| 1576 * originally selected for user input. | |
| 1577 */ | |
| 1578 if (!focus_follows_mouse) | |
| 1579 { | |
| 1580 /* prevent us from issuing the same request more than once */ | |
| 1581 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = sel_frame; | |
| 1582 MAYBE_DEVMETH (d, focus_on_frame, (XFRAME (sel_frame))); | |
| 1583 } | |
| 1584 else | |
| 1585 { | |
| 1586 Lisp_Object old_frame = Qnil; | |
| 1587 | |
| 1588 /* #### Do we really want to check OUGHT ?? | |
| 1589 * It seems to make sense, though I have never seen us | |
| 1590 * get here and have it be non-nil. | |
| 1591 */ | |
| 1592 if (FRAMEP (DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d))) | |
| 1593 old_frame = DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d); | |
| 1594 else if (FRAMEP (DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d))) | |
| 1595 old_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d); | |
| 1596 | |
| 1597 /* #### Can old_frame ever be NIL? play it safe.. */ | |
| 1598 if (!NILP (old_frame)) | |
| 1599 { | |
| 1600 /* Fselect_frame is not really the right thing: it frobs the | |
| 1601 * buffer stack. But there's no easy way to do the right | |
| 1602 * thing, and this code already had this problem anyway. | |
| 1603 */ | |
| 1604 Fselect_frame (old_frame); | |
| 1605 } | |
| 1606 } | |
| 1607 } | |
| 1608 } | |
| 1609 } | |
| 1610 | |
| 1611 static Lisp_Object | |
| 1612 cleanup_after_missed_defocusing (Lisp_Object frame) | |
| 1613 { | |
| 1614 if (FRAMEP (frame) && FRAME_LIVE_P (XFRAME (frame))) | |
| 1615 Fselect_frame (frame); | |
| 1616 return Qnil; | |
| 1617 } | |
| 1618 | |
| 1619 void | |
| 1620 emacs_handle_focus_change_preliminary (Lisp_Object frame_inp_and_dev) | |
| 1621 { | |
| 1622 Lisp_Object frame = Fcar (frame_inp_and_dev); | |
| 1623 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev)); | |
| 1624 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev))); | |
| 1625 struct device *d; | |
| 1626 | |
| 1627 if (!DEVICE_LIVE_P (XDEVICE (device))) | |
| 1628 return; | |
| 1629 else | |
| 1630 d = XDEVICE (device); | |
| 1631 | |
| 1632 /* Any received focus-change notifications render invalid any | |
| 1633 pending focus-change requests. */ | |
| 1634 DEVICE_FRAME_THAT_OUGHT_TO_HAVE_FOCUS (d) = Qnil; | |
| 1635 if (in_p) | |
| 1636 { | |
| 1637 Lisp_Object focus_frame; | |
| 1638 | |
| 1639 if (!FRAME_LIVE_P (XFRAME (frame))) | |
| 1640 return; | |
| 1641 else | |
| 1642 focus_frame = DEVICE_FRAME_WITH_FOCUS_REAL (d); | |
| 1643 | |
| 1644 /* Mark the minibuffer as changed to make sure it gets updated | |
| 1645 properly if the echo area is active. */ | |
| 1646 { | |
| 1647 struct window *w = XWINDOW (FRAME_MINIBUF_WINDOW (XFRAME (frame))); | |
| 1648 MARK_WINDOWS_CHANGED (w); | |
| 1649 } | |
| 1650 | |
| 452 | 1651 if (FRAMEP (focus_frame) && FRAME_LIVE_P (XFRAME (focus_frame)) |
| 1652 && !EQ (frame, focus_frame)) | |
| 428 | 1653 { |
| 1654 /* Oops, we missed a focus-out event. */ | |
| 1655 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil; | |
| 1656 redisplay_redraw_cursor (XFRAME (focus_frame), 1); | |
| 1657 } | |
| 1658 DEVICE_FRAME_WITH_FOCUS_REAL (d) = frame; | |
| 1659 if (!EQ (frame, focus_frame)) | |
| 1660 { | |
| 1661 redisplay_redraw_cursor (XFRAME (frame), 1); | |
| 1662 } | |
| 1663 } | |
| 1664 else | |
| 1665 { | |
| 1666 /* We ignore the frame reported in the event. If it's different | |
| 1667 from where we think the focus was, oh well -- we messed up. | |
| 1668 Nonetheless, we pretend we were right, for sensible behavior. */ | |
| 1669 frame = DEVICE_FRAME_WITH_FOCUS_REAL (d); | |
| 1670 if (!NILP (frame)) | |
| 1671 { | |
| 1672 DEVICE_FRAME_WITH_FOCUS_REAL (d) = Qnil; | |
| 1673 | |
| 1674 if (FRAME_LIVE_P (XFRAME (frame))) | |
| 1675 redisplay_redraw_cursor (XFRAME (frame), 1); | |
| 1676 } | |
| 1677 } | |
| 1678 } | |
| 1679 | |
| 1680 /* Called from the window-system-specific code when we receive a | |
| 1681 notification that the focus lies on a particular frame. | |
| 1682 Argument is a cons: (frame . (device . in-p)) where in-p is non-nil | |
| 1683 for focus-in. | |
| 1684 */ | |
| 1685 void | |
| 1686 emacs_handle_focus_change_final (Lisp_Object frame_inp_and_dev) | |
| 1687 { | |
| 1688 Lisp_Object frame = Fcar (frame_inp_and_dev); | |
| 1689 Lisp_Object device = Fcar (Fcdr (frame_inp_and_dev)); | |
| 1690 int in_p = !NILP (Fcdr (Fcdr (frame_inp_and_dev))); | |
| 1691 struct device *d; | |
| 1692 int count; | |
| 1693 | |
| 1694 if (!DEVICE_LIVE_P (XDEVICE (device))) | |
| 1695 return; | |
| 1696 else | |
| 1697 d = XDEVICE (device); | |
| 1698 | |
| 1699 if (in_p) | |
| 1700 { | |
| 1701 Lisp_Object focus_frame; | |
| 1702 | |
| 1703 if (!FRAME_LIVE_P (XFRAME (frame))) | |
| 1704 return; | |
| 1705 else | |
| 1706 focus_frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d); | |
| 1707 | |
| 1708 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = frame; | |
| 1709 if (FRAMEP (focus_frame) && !EQ (frame, focus_frame)) | |
| 1710 { | |
| 1711 /* Oops, we missed a focus-out event. */ | |
| 1712 Fselect_frame (focus_frame); | |
| 1713 /* Do an unwind-protect in case an error occurs in | |
| 1714 the deselect-frame-hook */ | |
| 1715 count = specpdl_depth (); | |
| 1716 record_unwind_protect (cleanup_after_missed_defocusing, frame); | |
| 1717 run_deselect_frame_hook (); | |
| 771 | 1718 unbind_to (count); |
| 428 | 1719 /* the cleanup method changed the focus frame to nil, so |
| 1720 we need to reflect this */ | |
| 1721 focus_frame = Qnil; | |
| 1722 } | |
| 1723 else | |
| 1724 Fselect_frame (frame); | |
| 1725 if (!EQ (frame, focus_frame)) | |
| 1726 run_select_frame_hook (); | |
| 1727 } | |
| 1728 else | |
| 1729 { | |
| 1730 /* We ignore the frame reported in the event. If it's different | |
| 1731 from where we think the focus was, oh well -- we messed up. | |
| 1732 Nonetheless, we pretend we were right, for sensible behavior. */ | |
| 1733 frame = DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d); | |
| 1734 if (!NILP (frame)) | |
| 1735 { | |
| 1736 DEVICE_FRAME_WITH_FOCUS_FOR_HOOKS (d) = Qnil; | |
| 1737 run_deselect_frame_hook (); | |
| 1738 } | |
| 1739 } | |
| 1740 } | |
| 1741 | |
| 1742 | |
| 1743 /**********************************************************************/ | |
| 1268 | 1744 /* input pending/quit checking */ |
| 1745 /**********************************************************************/ | |
| 1746 | |
| 1747 /* If HOW_MANY is 0, return true if there are any user or non-user events | |
| 1748 pending. If HOW_MANY is > 0, return true if there are that many *user* | |
| 1749 events pending, irrespective of non-user events. */ | |
| 1750 | |
| 1751 static int | |
| 1752 event_stream_event_pending_p (int how_many) | |
| 1753 { | |
| 1754 /* #### Hmmm ... There may be some duplication in "drain queue" and | |
| 1755 "event pending". Couldn't we just drain the queue and see what's in | |
| 1756 it, and not maybe need a separate event method for this? Would this | |
| 1757 work when HOW_MANY is 0? Maybe this would be slow? */ | |
| 1758 return event_stream && event_stream->event_pending_p (how_many); | |
| 1759 } | |
| 1760 | |
| 1761 static void | |
| 1762 event_stream_force_event_pending (struct frame *f) | |
| 1763 { | |
| 1764 if (event_stream->force_event_pending_cb) | |
| 1765 event_stream->force_event_pending_cb (f); | |
| 1766 } | |
| 1767 | |
| 1768 void | |
| 1769 event_stream_drain_queue (void) | |
| 1770 { | |
| 1318 | 1771 /* This can call Lisp */ |
| 1268 | 1772 if (event_stream && event_stream->drain_queue_cb) |
| 1773 event_stream->drain_queue_cb (); | |
| 1774 } | |
| 1775 | |
| 1776 /* Return non-zero if at least HOW_MANY user events are pending. */ | |
| 1777 int | |
| 1778 detect_input_pending (int how_many) | |
| 1779 { | |
| 1318 | 1780 /* This can call Lisp */ |
| 1268 | 1781 Lisp_Object event; |
| 1782 | |
| 1783 if (!NILP (Vunread_command_event)) | |
| 1784 how_many--; | |
| 1785 | |
|
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|
1786 how_many -= XFIXNUM (Fsafe_length (Vunread_command_events)); |
| 1268 | 1787 |
| 1788 if (how_many <= 0) | |
| 1789 return 1; | |
| 1790 | |
| 1791 EVENT_CHAIN_LOOP (event, command_event_queue) | |
| 1792 { | |
| 1793 if (XEVENT_TYPE (event) != eval_event | |
| 1794 && XEVENT_TYPE (event) != magic_eval_event) | |
| 1795 { | |
| 1796 how_many--; | |
| 1797 if (how_many <= 0) | |
| 1798 return 1; | |
| 1799 } | |
| 1800 } | |
| 1801 | |
| 1802 return event_stream_event_pending_p (how_many); | |
| 1803 } | |
| 1804 | |
| 1805 DEFUN ("input-pending-p", Finput_pending_p, 0, 0, 0, /* | |
| 1806 Return t if command input is currently available with no waiting. | |
| 1807 Actually, the value is nil only if we can be sure that no input is available. | |
| 1808 */ | |
| 1809 ()) | |
| 1810 { | |
| 1318 | 1811 /* This can call Lisp */ |
| 1268 | 1812 return detect_input_pending (1) ? Qt : Qnil; |
| 1813 } | |
| 1814 | |
| 1815 static int | |
| 1816 maybe_read_quit_event (Lisp_Event *event) | |
| 1817 { | |
| 1818 /* A C-g that came from `sigint_happened' will always come from the | |
| 1819 controlling terminal. If that doesn't exist, however, then the | |
| 1820 user manually sent us a SIGINT, and we pretend the C-g came from | |
| 1821 the selected console. */ | |
| 1822 struct console *con; | |
| 1823 | |
| 1824 if (CONSOLEP (Vcontrolling_terminal) && | |
| 1825 CONSOLE_LIVE_P (XCONSOLE (Vcontrolling_terminal))) | |
| 1826 con = XCONSOLE (Vcontrolling_terminal); | |
| 1827 else | |
| 1828 con = XCONSOLE (Fselected_console ()); | |
| 1829 | |
| 1830 if (sigint_happened) | |
| 1831 { | |
| 1832 sigint_happened = 0; | |
| 1833 Vquit_flag = Qnil; | |
| 1834 Fcopy_event (CONSOLE_QUIT_EVENT (con), wrap_event (event)); | |
| 1835 return 1; | |
| 1836 } | |
| 1837 return 0; | |
| 1838 } | |
| 1839 | |
| 1840 struct remove_quit_p_data | |
| 1841 { | |
| 1842 int critical; | |
| 1843 }; | |
| 1844 | |
| 1845 static int | |
| 1846 remove_quit_p_event (Lisp_Object ev, void *the_data) | |
| 1847 { | |
| 1848 struct remove_quit_p_data *data = (struct remove_quit_p_data *) the_data; | |
| 1849 struct console *con = event_console_or_selected (ev); | |
| 1850 | |
| 1851 if (XEVENT_TYPE (ev) == key_press_event) | |
| 1852 { | |
| 1853 if (event_matches_key_specifier_p (ev, CONSOLE_QUIT_EVENT (con))) | |
| 1854 return 1; | |
| 1855 if (event_matches_key_specifier_p (ev, | |
| 1856 CONSOLE_CRITICAL_QUIT_EVENT (con))) | |
| 1857 { | |
| 1858 data->critical = 1; | |
| 1859 return 1; | |
| 1860 } | |
| 1861 } | |
| 1862 | |
| 1863 return 0; | |
| 1864 } | |
| 1865 | |
| 1866 void | |
| 1867 event_stream_quit_p (void) | |
| 1868 { | |
| 1318 | 1869 /* This can call Lisp */ |
| 1268 | 1870 struct remove_quit_p_data data; |
| 1871 | |
| 1872 /* Quit checking cannot happen in modal loop. Because it attempts to | |
| 1873 retrieve and dispatch events, it will cause lots of problems if we try | |
| 1874 to do this when already in the process of doing this -- deadlocking | |
| 1875 under Windows, crashes in lwlib etc. under X due to non-reentrant | |
| 1876 code. This is automatically caught, however, in | |
| 1877 event_stream_drain_queue() (checks for in_modal_loop in the | |
| 1878 event-specific code). */ | |
| 1879 | |
| 1880 /* Drain queue so we can check for pending C-g events. */ | |
| 1881 event_stream_drain_queue (); | |
| 1882 data.critical = 0; | |
| 1883 | |
| 1884 if (map_event_chain_remove (remove_quit_p_event, | |
| 1885 &dispatch_event_queue, | |
| 1886 &dispatch_event_queue_tail, | |
| 1887 &data, MECR_DEALLOCATE_EVENT)) | |
| 1888 Vquit_flag = data.critical ? Qcritical : Qt; | |
| 1889 } | |
| 1890 | |
| 1891 Lisp_Object | |
| 1892 event_stream_protect_modal_loop (const char *error_string, | |
| 1893 Lisp_Object (*bfun) (void *barg), | |
| 1894 void *barg, int flags) | |
| 1895 { | |
| 1896 Lisp_Object tmp; | |
| 1897 | |
| 1898 ++in_modal_loop; | |
| 1899 tmp = call_trapping_problems (Qevent, error_string, flags, 0, bfun, barg); | |
| 1900 --in_modal_loop; | |
| 1901 | |
| 1902 return tmp; | |
| 1903 } | |
| 1904 | |
| 1905 | |
| 1906 /**********************************************************************/ | |
| 428 | 1907 /* retrieving the next event */ |
| 1908 /**********************************************************************/ | |
| 1909 | |
| 1910 static int in_single_console; | |
| 1911 | |
| 1912 /* #### These functions don't currently do anything. */ | |
| 1913 void | |
| 1914 single_console_state (void) | |
| 1915 { | |
| 1916 in_single_console = 1; | |
| 1917 } | |
| 1918 | |
| 1919 void | |
| 1920 any_console_state (void) | |
| 1921 { | |
| 1922 in_single_console = 0; | |
| 1923 } | |
| 1924 | |
| 1925 int | |
| 1926 in_single_console_state (void) | |
| 1927 { | |
| 1928 return in_single_console; | |
| 1929 } | |
| 1930 | |
| 1268 | 1931 static void |
| 1932 event_stream_next_event (Lisp_Event *event) | |
| 1933 { | |
| 1934 Lisp_Object event_obj; | |
| 1935 | |
| 1936 check_event_stream_ok (); | |
| 1937 | |
| 1938 event_obj = wrap_event (event); | |
| 1939 zero_event (event); | |
| 1940 /* SIGINT occurs when C-g was pressed on a TTY. (SIGINT might have | |
| 1941 been sent manually by the user, but we don't care; we treat it | |
| 1942 the same.) | |
| 1943 | |
| 1944 The SIGINT signal handler sets Vquit_flag as well as sigint_happened | |
| 1945 and write a byte on our "fake pipe", which unblocks us when we are | |
| 1946 waiting for an event. */ | |
| 1947 | |
| 1948 /* If SIGINT was received after we disabled quit checking (because | |
| 1949 we want to read C-g's as characters), but before we got a chance | |
| 1950 to start reading, notice it now and treat it as a character to be | |
| 1951 read. If above callers wanted this to be QUIT, they can | |
| 1952 determine this by comparing the event against quit-char. */ | |
| 1953 | |
| 1954 if (maybe_read_quit_event (event)) | |
| 1955 { | |
| 1956 DEBUG_PRINT_EMACS_EVENT ("SIGINT", event_obj); | |
| 1957 return; | |
| 1958 } | |
| 1959 | |
| 1960 /* If a longjmp() happens in the callback, we're screwed. | |
| 1961 Let's hope it doesn't. I think the code here is fairly | |
| 1962 clean and doesn't do this. */ | |
| 1963 emacs_is_blocking = 1; | |
| 1964 event_stream->next_event_cb (event); | |
| 1965 emacs_is_blocking = 0; | |
| 1966 | |
| 1967 /* Now check to see if C-g was pressed while we were blocking. | |
| 1968 We treat it as an event, just like above. */ | |
| 1969 if (maybe_read_quit_event (event)) | |
| 1970 { | |
| 1971 DEBUG_PRINT_EMACS_EVENT ("SIGINT", event_obj); | |
| 1972 return; | |
| 1973 } | |
| 1974 | |
| 1975 #ifdef DEBUG_XEMACS | |
| 1976 /* timeout events have more info set later, so | |
| 1977 print the event out in next_event_internal(). */ | |
| 1978 if (event->event_type != timeout_event) | |
| 1979 DEBUG_PRINT_EMACS_EVENT ("real", event_obj); | |
| 1980 #endif | |
| 1981 maybe_kbd_translate (event_obj); | |
| 1982 } | |
| 428 | 1983 |
| 853 | 1984 /* Read an event from the window system (or tty). If ALLOW_QUEUED is |
| 1985 non-zero, read from the command-event queue first. | |
| 1986 | |
| 1987 If C-g was pressed, this function will attempt to QUIT. If you want | |
| 1988 to read C-g as an event, wrap this function with a call to | |
| 1989 begin_dont_check_for_quit(), and set Vquit_flag to Qnil just before | |
| 1990 you unbind. In this case, TARGET_EVENT will contain a C-g. | |
| 1991 | |
| 1992 Note that even if you are interested in C-g doing QUIT, a caller of you | |
| 1993 might not be. | |
| 1994 */ | |
| 1995 | |
| 428 | 1996 static void |
| 1997 next_event_internal (Lisp_Object target_event, int allow_queued) | |
| 1998 { | |
| 1999 struct gcpro gcpro1; | |
| 1292 | 2000 PROFILE_DECLARE (); |
| 2001 | |
| 853 | 2002 QUIT; |
| 428 | 2003 |
| 1292 | 2004 PROFILE_RECORD_ENTERING_SECTION (QSnext_event_internal); |
| 2005 | |
| 428 | 2006 assert (NILP (XEVENT_NEXT (target_event))); |
| 2007 | |
| 2008 GCPRO1 (target_event); | |
| 2009 | |
| 2010 /* When focus_follows_mouse is nil, if a frame change took place, we need | |
| 2011 * to actually switch window manager focus to the selected window now. | |
| 2012 */ | |
| 2013 if (!focus_follows_mouse) | |
| 2014 investigate_frame_change (); | |
| 2015 | |
| 2016 if (allow_queued && !NILP (command_event_queue)) | |
| 2017 { | |
| 2018 Lisp_Object event = dequeue_command_event (); | |
| 2019 Fcopy_event (event, target_event); | |
| 2020 Fdeallocate_event (event); | |
| 2021 DEBUG_PRINT_EMACS_EVENT ("command event queue", target_event); | |
| 2022 } | |
| 2023 else | |
| 2024 { | |
| 440 | 2025 Lisp_Event *e = XEVENT (target_event); |
| 428 | 2026 |
| 2027 /* The command_event_queue was empty. Wait for an event. */ | |
| 2028 event_stream_next_event (e); | |
| 2029 /* If this was a timeout, then we need to extract some data | |
| 2030 out of the returned closure and might need to resignal | |
| 2031 it. */ | |
| 934 | 2032 if (EVENT_TYPE (e) == timeout_event) |
| 428 | 2033 { |
| 2034 Lisp_Object tristan, isolde; | |
| 2035 | |
| 1204 | 2036 SET_EVENT_TIMEOUT_ID_NUMBER (e, |
| 2037 event_stream_resignal_wakeup (EVENT_TIMEOUT_INTERVAL_ID (e), 0, &tristan, &isolde)); | |
| 2038 | |
| 2039 SET_EVENT_TIMEOUT_FUNCTION (e, tristan); | |
| 2040 SET_EVENT_TIMEOUT_OBJECT (e, isolde); | |
| 934 | 2041 /* next_event_internal() doesn't print out timeout events |
| 2042 because of the extra info we just set. */ | |
| 428 | 2043 DEBUG_PRINT_EMACS_EVENT ("real, timeout", target_event); |
| 2044 } | |
| 2045 | |
| 853 | 2046 /* If we read a ^G, then set quit-flag and try to QUIT. |
| 2047 This may be blocked (see above). | |
| 428 | 2048 */ |
| 934 | 2049 if (EVENT_TYPE (e) == key_press_event && |
| 428 | 2050 event_matches_key_specifier_p |
| 1204 | 2051 (target_event, CONSOLE_QUIT_EVENT (XCONSOLE (EVENT_CHANNEL (e))))) |
| 428 | 2052 { |
| 2053 Vquit_flag = Qt; | |
| 853 | 2054 QUIT; |
| 428 | 2055 } |
| 2056 } | |
| 2057 | |
| 2058 UNGCPRO; | |
| 1292 | 2059 |
| 2060 PROFILE_RECORD_EXITING_SECTION (QSnext_event_internal); | |
| 428 | 2061 } |
| 2062 | |
| 853 | 2063 void |
| 428 | 2064 run_pre_idle_hook (void) |
| 2065 { | |
| 1318 | 2066 /* This can call Lisp */ |
| 428 | 2067 if (!NILP (Vpre_idle_hook) |
| 1268 | 2068 && !detect_input_pending (1)) |
| 853 | 2069 safe_run_hook_trapping_problems |
| 1333 | 2070 (Qredisplay, Qpre_idle_hook, |
| 1268 | 2071 /* Quit is inhibited as a result of being within next-event so |
| 2072 we need to fix that. */ | |
| 2073 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION | UNINHIBIT_QUIT); | |
| 428 | 2074 } |
| 2075 | |
| 2076 DEFUN ("next-event", Fnext_event, 0, 2, 0, /* | |
| 2077 Return the next available event. | |
| 2078 Pass this object to `dispatch-event' to handle it. | |
| 2079 In most cases, you will want to use `next-command-event', which returns | |
| 2080 the next available "user" event (i.e. keypress, button-press, | |
| 2081 button-release, or menu selection) instead of this function. | |
| 2082 | |
| 2083 If EVENT is non-nil, it should be an event object and will be filled in | |
| 2084 and returned; otherwise a new event object will be created and returned. | |
| 2085 If PROMPT is non-nil, it should be a string and will be displayed in the | |
| 2086 echo area while this function is waiting for an event. | |
| 2087 | |
| 2088 The next available event will be | |
| 2089 | |
| 2090 -- any events in `unread-command-events' or `unread-command-event'; else | |
| 2091 -- the next event in the currently executing keyboard macro, if any; else | |
| 442 | 2092 -- an event queued by `enqueue-eval-event', if any, or any similar event |
| 2093 queued internally, such as a misc-user event. (For example, when an item | |
| 2094 is selected from a menu or from a `question'-type dialog box, the item's | |
| 2095 callback is not immediately executed, but instead a misc-user event | |
| 2096 is generated and placed onto this queue; when it is dispatched, the | |
| 2097 callback is executed.) Else | |
| 428 | 2098 -- the next available event from the window system or terminal driver. |
| 2099 | |
| 2100 In the last case, this function will block until an event is available. | |
| 2101 | |
| 2102 The returned event will be one of the following types: | |
| 2103 | |
| 2104 -- a key-press event. | |
| 2105 -- a button-press or button-release event. | |
| 2106 -- a misc-user-event, meaning the user selected an item on a menu or used | |
| 2107 the scrollbar. | |
| 2108 -- a process event, meaning that output from a subprocess is available. | |
| 2109 -- a timeout event, meaning that a timeout has elapsed. | |
| 2110 -- an eval event, which simply causes a function to be executed when the | |
| 2111 event is dispatched. Eval events are generated by `enqueue-eval-event' | |
| 2112 or by certain other conditions happening. | |
| 2113 -- a magic event, indicating that some window-system-specific event | |
| 2114 happened (such as a focus-change notification) that must be handled | |
| 2115 synchronously with other events. `dispatch-event' knows what to do with | |
| 2116 these events. | |
| 2117 */ | |
| 2118 (event, prompt)) | |
| 2119 { | |
| 2120 /* This function can call lisp */ | |
| 2121 /* #### We start out using the selected console before an event | |
| 2122 is received, for echoing the partially completed command. | |
| 2123 This is most definitely wrong -- there needs to be a separate | |
| 2124 echo area for each console! */ | |
| 2125 struct console *con = XCONSOLE (Vselected_console); | |
| 2126 struct command_builder *command_builder = | |
| 2127 XCOMMAND_BUILDER (con->command_builder); | |
| 2128 int store_this_key = 0; | |
| 2129 struct gcpro gcpro1; | |
| 853 | 2130 int depth; |
| 1292 | 2131 PROFILE_DECLARE (); |
| 428 | 2132 |
| 2133 GCPRO1 (event); | |
| 853 | 2134 |
| 1268 | 2135 /* This is not strictly necessary. Trying to retrieve an event inside of |
| 2136 a modal loop can cause major problems (see event_stream_quit_p()), but | |
| 2137 the event-specific code knows about this and will make sure we don't | |
| 2138 do anything dangerous. However, if we've gotten here, it's highly | |
| 2139 likely that some code is trying to fetch user events (e.g. in custom | |
| 2140 dialog-box code), and will almost certainly deadlock, so it's probably | |
| 2141 best to error out. #### This could cause problems because there are | |
| 2142 (potentially, at least) legitimate reasons for calling next-event | |
| 2143 inside of a modal loop, in particular if the code is trying to search | |
| 2144 for a timeout event, which will still get retrieved in such a case. | |
| 2145 However, the code to error in such a case has already been present for | |
| 2146 a long time without obvious problems so leaving it in isn't so | |
| 1279 | 2147 bad. |
| 2148 | |
| 2149 #### I used to conditionalize on in_modal_loop but that fails utterly | |
| 2150 because event-msw.c specifically calls Fnext_event() inside of a modal | |
| 2151 loop to clear the dispatch queue. --ben */ | |
| 1315 | 2152 #ifdef HAVE_MENUBARS |
| 1279 | 2153 if (in_menu_callback) |
| 2154 invalid_operation ("Attempt to call next-event inside menu callback", | |
| 1268 | 2155 Qunbound); |
| 1315 | 2156 #endif /* HAVE_MENUBARS */ |
| 1268 | 2157 |
| 1292 | 2158 PROFILE_RECORD_ENTERING_SECTION (Qnext_event); |
| 2159 | |
| 853 | 2160 depth = begin_dont_check_for_quit (); |
| 428 | 2161 |
| 2162 if (NILP (event)) | |
| 2163 event = Fmake_event (Qnil, Qnil); | |
| 2164 else | |
| 2165 CHECK_LIVE_EVENT (event); | |
| 2166 | |
| 2167 if (!NILP (prompt)) | |
| 2168 { | |
| 2169 Bytecount len; | |
|
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2170 Lisp_Object args[] = { Qnil, prompt }; |
| 428 | 2171 CHECK_STRING (prompt); |
| 2172 | |
| 2173 len = XSTRING_LENGTH (prompt); | |
|
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2174 |
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2175 detach_all_extents (command_builder->echo_buf); |
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2176 if (XSTRING_LENGTH (command_builder->echo_buf) < len) |
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|
2177 { |
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2178 command_builder->echo_buf |
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2179 = make_uninit_string (len + 200 * MAX_ICHAR_LEN); |
|
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2180 } |
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|
2181 |
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|
2182 args[0] = command_builder->echo_buf; |
|
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|
2183 Freplace (countof (args), args); |
|
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|
2184 copy_string_extents (command_builder->echo_buf, prompt, 0, 0, |
|
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|
2185 XSTRING_LENGTH (prompt)); |
|
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|
2186 command_builder->echo_buf_fill_pointer |
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2187 = command_builder->echo_buf_end = len; |
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2188 |
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|
2189 echo_area_message (XFRAME (CONSOLE_SELECTED_FRAME (con)), NULL, |
|
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2190 command_builder->echo_buf, 0, |
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|
2191 command_builder->echo_buf_end, Qcommand); |
| 428 | 2192 } |
| 2193 | |
| 2194 start_over_and_avoid_hosage: | |
| 2195 | |
| 2196 /* If there is something in unread-command-events, simply return it. | |
| 2197 But do some error checking to make sure the user hasn't put something | |
| 2198 in the unread-command-events that they shouldn't have. | |
| 2199 This does not update this-command-keys and recent-keys. | |
| 2200 */ | |
| 2201 if (!NILP (Vunread_command_events)) | |
| 2202 { | |
| 2203 if (!CONSP (Vunread_command_events)) | |
| 2204 { | |
| 2205 Vunread_command_events = Qnil; | |
| 563 | 2206 signal_error_1 (Qwrong_type_argument, |
| 428 | 2207 list3 (Qconsp, Vunread_command_events, |
| 2208 Qunread_command_events)); | |
| 2209 } | |
| 2210 else | |
| 2211 { | |
| 2212 Lisp_Object e = XCAR (Vunread_command_events); | |
| 2213 Vunread_command_events = XCDR (Vunread_command_events); | |
| 2214 if (!EVENTP (e) || !command_event_p (e)) | |
| 563 | 2215 signal_error_1 (Qwrong_type_argument, |
| 428 | 2216 list3 (Qcommand_event_p, e, Qunread_command_events)); |
| 853 | 2217 redisplay_no_pre_idle_hook (); |
| 428 | 2218 if (!EQ (e, event)) |
| 2219 Fcopy_event (e, event); | |
| 2220 DEBUG_PRINT_EMACS_EVENT ("unread-command-events", event); | |
| 2221 } | |
| 2222 } | |
| 2223 | |
| 2224 /* Do similar for unread-command-event (obsoleteness support). */ | |
| 2225 else if (!NILP (Vunread_command_event)) | |
| 2226 { | |
| 2227 Lisp_Object e = Vunread_command_event; | |
| 2228 Vunread_command_event = Qnil; | |
| 2229 | |
| 2230 if (!EVENTP (e) || !command_event_p (e)) | |
| 2231 { | |
| 563 | 2232 signal_error_1 (Qwrong_type_argument, |
| 428 | 2233 list3 (Qeventp, e, Qunread_command_event)); |
| 2234 } | |
| 2235 if (!EQ (e, event)) | |
| 2236 Fcopy_event (e, event); | |
| 853 | 2237 redisplay_no_pre_idle_hook (); |
| 428 | 2238 DEBUG_PRINT_EMACS_EVENT ("unread-command-event", event); |
| 2239 } | |
| 2240 | |
| 2241 /* If we're executing a keyboard macro, take the next event from that, | |
| 2242 and update this-command-keys and recent-keys. | |
| 2243 Note that the unread-command-events take precedence over kbd macros. | |
| 2244 */ | |
| 2245 else | |
| 2246 { | |
| 2247 if (!NILP (Vexecuting_macro)) | |
| 2248 { | |
| 853 | 2249 redisplay_no_pre_idle_hook (); |
| 428 | 2250 pop_kbd_macro_event (event); /* This throws past us at |
| 2251 end-of-macro. */ | |
| 2252 store_this_key = 1; | |
| 2253 DEBUG_PRINT_EMACS_EVENT ("keyboard macro", event); | |
| 2254 } | |
| 2255 /* Otherwise, read a real event, possibly from the | |
| 2256 command_event_queue, and update this-command-keys and | |
| 2257 recent-keys. */ | |
| 2258 else | |
| 2259 { | |
| 2260 redisplay (); | |
| 2261 next_event_internal (event, 1); | |
| 2262 store_this_key = 1; | |
| 2263 } | |
| 2264 } | |
| 2265 | |
| 853 | 2266 /* temporarily reenable quit checking here, because arbitrary lisp |
| 2267 is executed */ | |
| 2268 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */ | |
| 2269 unbind_to (depth); | |
| 428 | 2270 status_notify (); /* Notice process change */ |
| 853 | 2271 depth = begin_dont_check_for_quit (); |
| 428 | 2272 |
| 2273 /* Since we can free the most stuff here | |
| 2274 * (since this is typically called from | |
| 2275 * the command-loop top-level). */ | |
| 851 | 2276 if (need_to_check_c_alloca) |
| 2277 xemacs_c_alloca (0); /* Cause a garbage collection now */ | |
| 428 | 2278 |
| 2279 if (object_dead_p (XEVENT (event)->channel)) | |
| 2280 /* event_console_or_selected may crash if the channel is dead. | |
| 2281 Best just to eat it and get the next event. */ | |
| 2282 goto start_over_and_avoid_hosage; | |
| 2283 | |
| 2284 /* OK, now we can stop the selected-console kludge and use the | |
| 2285 actual console from the event. */ | |
| 2286 con = event_console_or_selected (event); | |
| 2287 command_builder = XCOMMAND_BUILDER (con->command_builder); | |
| 2288 | |
| 2289 switch (XEVENT_TYPE (event)) | |
| 2290 { | |
| 2291 case button_release_event: | |
| 2292 case misc_user_event: | |
| 2293 /* don't echo menu accelerator keys */ | |
| 2294 reset_key_echo (command_builder, 1); | |
| 2295 goto EXECUTE_KEY; | |
| 2296 case button_press_event: /* key or mouse input can trigger prompting */ | |
| 2297 goto STORE_AND_EXECUTE_KEY; | |
| 2298 case key_press_event: /* any key input can trigger autosave */ | |
| 2299 break; | |
| 898 | 2300 default: |
| 2301 goto RETURN; | |
| 428 | 2302 } |
| 2303 | |
| 853 | 2304 /* temporarily reenable quit checking here, because we could get stuck */ |
| 2305 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */ | |
| 2306 unbind_to (depth); | |
| 428 | 2307 maybe_do_auto_save (); |
| 853 | 2308 depth = begin_dont_check_for_quit (); |
| 2309 | |
| 428 | 2310 num_input_chars++; |
| 2311 STORE_AND_EXECUTE_KEY: | |
| 2312 if (store_this_key) | |
| 2313 { | |
| 2314 echo_key_event (command_builder, event); | |
| 2315 } | |
| 2316 | |
| 2317 EXECUTE_KEY: | |
| 2318 /* Store the last-input-event. The semantics of this is that it is | |
| 2319 the thing most recently returned by next-command-event. It need | |
| 2320 not have come from the keyboard or a keyboard macro, it may have | |
| 2321 come from unread-command-events. It's always a command-event (a | |
| 2322 key, click, or menu selection), never a motion or process event. | |
| 2323 */ | |
| 2324 if (!EVENTP (Vlast_input_event)) | |
| 2325 Vlast_input_event = Fmake_event (Qnil, Qnil); | |
| 2326 if (XEVENT_TYPE (Vlast_input_event) == dead_event) | |
| 2327 { | |
| 2328 Vlast_input_event = Fmake_event (Qnil, Qnil); | |
| 563 | 2329 invalid_state ("Someone deallocated last-input-event!", Qunbound); |
| 428 | 2330 } |
| 2331 if (! EQ (event, Vlast_input_event)) | |
| 2332 Fcopy_event (event, Vlast_input_event); | |
| 2333 | |
| 2334 /* last-input-char and last-input-time are derived from | |
| 2335 last-input-event. | |
| 2336 Note that last-input-char will never have its high-bit set, in an | |
| 2337 effort to sidestep the ambiguity between M-x and oslash. | |
| 2338 */ | |
| 2862 | 2339 Vlast_input_char = Fevent_to_character (Vlast_input_event, Qnil, Qnil, Qnil); |
| 428 | 2340 { |
| 2341 EMACS_TIME t; | |
| 2342 EMACS_GET_TIME (t); | |
| 2343 if (!CONSP (Vlast_input_time)) | |
| 2344 Vlast_input_time = Fcons (Qnil, Qnil); | |
|
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|
2345 XCAR (Vlast_input_time) = make_fixnum ((EMACS_SECS (t) >> 16) & 0xffff); |
|
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|
2346 XCDR (Vlast_input_time) = make_fixnum ((EMACS_SECS (t) >> 0) & 0xffff); |
| 428 | 2347 if (!CONSP (Vlast_command_event_time)) |
| 2348 Vlast_command_event_time = list3 (Qnil, Qnil, Qnil); | |
| 2349 XCAR (Vlast_command_event_time) = | |
|
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|
2350 make_fixnum ((EMACS_SECS (t) >> 16) & 0xffff); |
| 428 | 2351 XCAR (XCDR (Vlast_command_event_time)) = |
|
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diff
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|
2352 make_fixnum ((EMACS_SECS (t) >> 0) & 0xffff); |
| 428 | 2353 XCAR (XCDR (XCDR (Vlast_command_event_time))) |
|
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|
2354 = make_fixnum (EMACS_USECS (t)); |
| 428 | 2355 } |
| 2356 /* If this key came from the keyboard or from a keyboard macro, then | |
| 2357 it goes into the recent-keys and this-command-keys vectors. | |
| 2358 If this key came from the keyboard, and we're defining a keyboard | |
| 2359 macro, then it goes into the macro. | |
| 2360 */ | |
| 2361 if (store_this_key) | |
| 2362 { | |
| 479 | 2363 if (!is_scrollbar_event (event)) /* #### not quite right, see |
| 2364 comment in execute_command_event */ | |
| 2365 push_this_command_keys (event); | |
| 428 | 2366 if (!inhibit_input_event_recording) |
| 2367 push_recent_keys (event); | |
| 2368 dribble_out_event (event); | |
| 2369 if (!NILP (con->defining_kbd_macro) && NILP (Vexecuting_macro)) | |
| 2370 { | |
| 2371 if (!EVENTP (command_builder->current_events)) | |
| 2372 finalize_kbd_macro_chars (con); | |
| 2373 store_kbd_macro_event (event); | |
| 2374 } | |
| 2375 } | |
| 853 | 2376 /* If this is the help char and there is a help form, then execute |
| 2377 the help form and swallow this character. Note that | |
| 2378 execute_help_form() calls Fnext_command_event(), which calls this | |
| 2379 function, as well as Fdispatch_event. */ | |
| 428 | 2380 if (!NILP (Vhelp_form) && |
| 1204 | 2381 event_matches_key_specifier_p (event, Vhelp_char)) |
| 853 | 2382 { |
| 2383 /* temporarily reenable quit checking here, because we could get stuck */ | |
| 2384 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */ | |
| 2385 unbind_to (depth); | |
| 2386 execute_help_form (command_builder, event); | |
| 2387 depth = begin_dont_check_for_quit (); | |
| 2388 } | |
| 428 | 2389 |
| 2390 RETURN: | |
| 853 | 2391 Vquit_flag = Qnil; /* see begin_dont_check_for_quit() */ |
| 2392 unbind_to (depth); | |
| 2393 | |
| 1292 | 2394 PROFILE_RECORD_EXITING_SECTION (Qnext_event); |
| 2395 | |
| 428 | 2396 UNGCPRO; |
| 853 | 2397 |
| 428 | 2398 return event; |
| 2399 } | |
| 2400 | |
| 2401 DEFUN ("next-command-event", Fnext_command_event, 0, 2, 0, /* | |
| 2402 Return the next available "user" event. | |
| 2403 Pass this object to `dispatch-event' to handle it. | |
| 2404 | |
| 2405 If EVENT is non-nil, it should be an event object and will be filled in | |
| 2406 and returned; otherwise a new event object will be created and returned. | |
| 2407 If PROMPT is non-nil, it should be a string and will be displayed in the | |
| 2408 echo area while this function is waiting for an event. | |
| 2409 | |
| 2410 The event returned will be a keyboard, mouse press, or mouse release event. | |
| 2411 If there are non-command events available (mouse motion, sub-process output, | |
| 2412 etc) then these will be executed (with `dispatch-event') and discarded. This | |
| 2413 function is provided as a convenience; it is roughly equivalent to the lisp code | |
| 2414 | |
| 2415 (while (progn | |
| 2416 (next-event event prompt) | |
| 2417 (not (or (key-press-event-p event) | |
| 2418 (button-press-event-p event) | |
| 2419 (button-release-event-p event) | |
| 2420 (misc-user-event-p event)))) | |
| 2421 (dispatch-event event)) | |
| 2422 | |
| 2423 but it also makes a provision for displaying keystrokes in the echo area. | |
| 2424 */ | |
| 2425 (event, prompt)) | |
| 2426 { | |
| 2427 /* This function can GC */ | |
| 2428 struct gcpro gcpro1; | |
| 2429 GCPRO1 (event); | |
| 934 | 2430 |
| 428 | 2431 maybe_echo_keys (XCOMMAND_BUILDER |
| 2432 (XCONSOLE (Vselected_console)-> | |
|
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|
2433 command_builder), |
|
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|
2434 /* Only snooze displaying keystrokes if we don't have a |
|
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diff
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|
2435 prompt. (If we have a prompt, our callers want us to |
|
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|
2436 show it!) */ |
|
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|
2437 !NILP (prompt)); |
| 853 | 2438 |
| 428 | 2439 for (;;) |
| 2440 { | |
| 2441 event = Fnext_event (event, prompt); | |
| 2442 if (command_event_p (event)) | |
| 2443 break; | |
| 2444 else | |
| 2445 execute_internal_event (event); | |
| 2446 } | |
| 2447 UNGCPRO; | |
| 2448 return event; | |
| 2449 } | |
| 2450 | |
| 442 | 2451 DEFUN ("dispatch-non-command-events", Fdispatch_non_command_events, 0, 0, 0, /* |
| 2452 Dispatch any pending "magic" events. | |
| 2453 | |
| 2454 This function is useful for forcing the redisplay of native | |
| 2455 widgets. Normally these are redisplayed through a native window-system | |
| 2456 event encoded as magic event, rather than by the redisplay code. This | |
| 2457 function does not call redisplay or do any of the other things that | |
| 2458 `next-event' does. | |
| 2459 */ | |
| 2460 ()) | |
| 2461 { | |
| 2462 /* This function can GC */ | |
| 2463 Lisp_Object event = Qnil; | |
| 2464 struct gcpro gcpro1; | |
| 2465 GCPRO1 (event); | |
| 2466 event = Fmake_event (Qnil, Qnil); | |
| 2467 | |
| 2468 /* Make sure that there will be something in the native event queue | |
| 2469 so that externally managed things (e.g. widgets) get some CPU | |
| 2470 time. */ | |
| 2471 event_stream_force_event_pending (selected_frame ()); | |
| 2472 | |
| 2473 while (event_stream_event_pending_p (0)) | |
| 2474 { | |
| 2475 /* We're a generator of the command_event_queue, so we can't be a | |
| 2476 consumer as well. Also, we have no reason to consult the | |
| 2477 command_event_queue; there are only user and eval-events there, | |
| 2478 and we'd just have to put them back anyway. | |
| 2479 */ | |
| 2480 next_event_internal (event, 0); /* blocks */ | |
| 2481 if (XEVENT_TYPE (event) == magic_event || | |
| 2482 XEVENT_TYPE (event) == timeout_event || | |
| 2483 XEVENT_TYPE (event) == process_event || | |
| 2484 XEVENT_TYPE (event) == pointer_motion_event) | |
| 2485 execute_internal_event (event); | |
| 2486 else | |
| 2487 { | |
| 2488 enqueue_command_event_1 (event); | |
| 2489 break; | |
| 2490 } | |
| 2491 } | |
| 2492 | |
| 2493 Fdeallocate_event (event); | |
| 2494 UNGCPRO; | |
| 2495 return Qnil; | |
| 2496 } | |
| 2497 | |
| 428 | 2498 static void |
| 2499 reset_current_events (struct command_builder *command_builder) | |
| 2500 { | |
| 2501 Lisp_Object event = command_builder->current_events; | |
| 2502 reset_command_builder_event_chain (command_builder); | |
| 2503 if (EVENTP (event)) | |
| 2504 deallocate_event_chain (event); | |
| 2505 } | |
| 2506 | |
| 1268 | 2507 static int |
| 2286 | 2508 command_event_p_cb (Lisp_Object ev, void *UNUSED (the_data)) |
| 1268 | 2509 { |
| 2510 return command_event_p (ev); | |
| 2511 } | |
| 2512 | |
| 428 | 2513 DEFUN ("discard-input", Fdiscard_input, 0, 0, 0, /* |
| 2514 Discard any pending "user" events. | |
| 2515 Also cancel any kbd macro being defined. | |
| 2516 A user event is a key press, button press, button release, or | |
| 2517 "misc-user" event (menu selection or scrollbar action). | |
| 2518 */ | |
| 2519 ()) | |
| 2520 { | |
| 1318 | 2521 /* This can call Lisp */ |
| 1268 | 2522 Lisp_Object concons; |
| 2523 | |
| 2524 CONSOLE_LOOP (concons) | |
| 428 | 2525 { |
| 1268 | 2526 struct console *con = XCONSOLE (XCAR (concons)); |
| 2527 | |
| 2528 /* If a macro was being defined then we have to mark the modeline | |
| 2529 has changed to ensure that it gets updated correctly. */ | |
| 2530 if (!NILP (con->defining_kbd_macro)) | |
| 2531 MARK_MODELINE_CHANGED; | |
| 2532 con->defining_kbd_macro = Qnil; | |
| 2533 reset_current_events (XCOMMAND_BUILDER (con->command_builder)); | |
| 428 | 2534 } |
| 2535 | |
| 1268 | 2536 /* This function used to be a lot more complicated. Now, we just |
| 2537 drain the pending queue and discard all user events from the | |
| 2538 command and dispatch queues. */ | |
| 2539 event_stream_drain_queue (); | |
| 2540 | |
| 2541 map_event_chain_remove (command_event_p_cb, | |
| 2542 &dispatch_event_queue, &dispatch_event_queue_tail, | |
| 2543 0, MECR_DEALLOCATE_EVENT); | |
| 2544 map_event_chain_remove (command_event_p_cb, | |
| 2545 &command_event_queue, &command_event_queue_tail, | |
| 2546 0, MECR_DEALLOCATE_EVENT); | |
| 428 | 2547 |
| 2548 return Qnil; | |
| 2549 } | |
| 2550 | |
| 2551 | |
| 2552 /**********************************************************************/ | |
| 2553 /* pausing until an action occurs */ | |
| 2554 /**********************************************************************/ | |
| 2555 | |
| 2556 /* This is used in accept-process-output, sleep-for and sit-for. | |
| 2557 Before running any process_events in these routines, we set | |
| 1268 | 2558 recursive_sit_for to 1, and use this unwind protect to reset it to |
| 2559 Qnil upon exit. When recursive_sit_for is 1, calling sit-for will | |
| 428 | 2560 cause it to return immediately. |
| 2561 | |
| 2562 All of these routines install timeouts, so we clear the installed | |
| 2563 timeout as well. | |
| 2564 | |
| 2565 Note: It's very easy to break the desired behaviors of these | |
| 2566 3 routines. If you make any changes to anything in this area, run | |
| 2567 the regression tests at the bottom of the file. -- dmoore */ | |
| 2568 | |
| 2569 | |
| 2570 static Lisp_Object | |
| 2571 sit_for_unwind (Lisp_Object timeout_id) | |
| 2572 { | |
| 2573 if (!NILP(timeout_id)) | |
| 2574 Fdisable_timeout (timeout_id); | |
| 2575 | |
| 1268 | 2576 recursive_sit_for = 0; |
| 428 | 2577 return Qnil; |
| 2578 } | |
| 2579 | |
| 2580 /* #### Is (accept-process-output nil 3) supposed to be like (sleep-for 3)? | |
| 2581 */ | |
| 2582 | |
| 2583 DEFUN ("accept-process-output", Faccept_process_output, 0, 3, 0, /* | |
| 2584 Allow any pending output from subprocesses to be read by Emacs. | |
| 2585 It is read into the process' buffers or given to their filter functions. | |
| 2586 Non-nil arg PROCESS means do not return until some output has been received | |
| 2587 from PROCESS. Nil arg PROCESS means do not return until some output has | |
| 2588 been received from any process. | |
| 2589 If the second arg is non-nil, it is the maximum number of seconds to wait: | |
| 2590 this function will return after that much time even if no input has arrived | |
| 2591 from PROCESS. This argument may be a float, meaning wait some fractional | |
| 2592 part of a second. | |
| 2593 If the third arg is non-nil, it is a number of milliseconds that is added | |
| 2594 to the second arg. (This exists only for compatibility.) | |
| 2595 Return non-nil iff we received any output before the timeout expired. | |
| 2596 */ | |
| 2597 (process, timeout_secs, timeout_msecs)) | |
| 2598 { | |
| 2599 /* This function can GC */ | |
| 2600 struct gcpro gcpro1, gcpro2; | |
| 2601 Lisp_Object event = Qnil; | |
| 2602 Lisp_Object result = Qnil; | |
| 2603 int timeout_id = -1; | |
| 2604 int timeout_enabled = 0; | |
| 2605 int done = 0; | |
| 2606 struct buffer *old_buffer = current_buffer; | |
| 2607 int count; | |
| 2608 | |
| 2609 /* We preserve the current buffer but nothing else. If a focus | |
| 2610 change alters the selected window then the top level event loop | |
| 2611 will eventually alter current_buffer to match. In the mean time | |
| 2612 we don't want to mess up whatever called this function. */ | |
| 2613 | |
| 2614 if (!NILP (process)) | |
| 2615 CHECK_PROCESS (process); | |
| 2616 | |
| 2617 GCPRO2 (event, process); | |
| 2618 | |
| 2619 if (!NILP (timeout_secs) || !NILP (timeout_msecs)) | |
| 2620 { | |
| 2621 unsigned long msecs = 0; | |
| 2622 if (!NILP (timeout_secs)) | |
| 2623 msecs = lisp_number_to_milliseconds (timeout_secs, 1); | |
| 2624 if (!NILP (timeout_msecs)) | |
| 2625 { | |
|
5307
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
2626 check_integer_range (timeout_msecs, Qzero, |
|
5736
3192994c49ca
Convert C (un)signed long long values to bignums properly.
Jerry James <james@xemacs.org>
parents:
5722
diff
changeset
|
2627 make_fixnum (MOST_POSITIVE_FIXNUM)); |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2628 msecs += XFIXNUM (timeout_msecs); |
| 428 | 2629 } |
| 2630 if (msecs) | |
| 2631 { | |
| 2632 timeout_id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0); | |
| 2633 timeout_enabled = 1; | |
| 2634 } | |
| 2635 } | |
| 2636 | |
| 2637 event = Fmake_event (Qnil, Qnil); | |
| 2638 | |
| 2639 count = specpdl_depth (); | |
| 2640 record_unwind_protect (sit_for_unwind, | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2641 timeout_enabled ? make_fixnum (timeout_id) : Qnil); |
| 1268 | 2642 recursive_sit_for = 1; |
| 428 | 2643 |
| 2644 while (!done && | |
| 2645 ((NILP (process) && timeout_enabled) || | |
| 2646 (NILP (process) && event_stream_event_pending_p (0)) || | |
| 2647 (!NILP (process)))) | |
| 2648 /* Calling detect_input_pending() is the wrong thing here, because | |
| 2649 that considers the Vunread_command_events and command_event_queue. | |
| 2650 We don't need to look at the command_event_queue because we are | |
| 2651 only interested in process events, which don't go on that. In | |
| 2652 fact, we can't read from it anyway, because we put stuff on it. | |
| 2653 | |
| 2654 Note that event_stream->event_pending_p must be called in such | |
| 2655 a way that it says whether any events *of any kind* are ready, | |
| 2656 not just user events, or (accept-process-output nil) will fail | |
| 2657 to dispatch any process events that may be on the queue. It is | |
| 2658 not clear to me that this is important, because the top-level | |
| 2659 loop will process it, and I don't think that there is ever a | |
| 2660 time when one calls accept-process-output with a nil argument | |
| 2661 and really need the processes to be handled. */ | |
| 2662 { | |
| 2663 /* If our timeout has arrived, we move along. */ | |
| 2664 if (timeout_enabled && !event_stream_wakeup_pending_p (timeout_id, 0)) | |
| 2665 { | |
| 2666 timeout_enabled = 0; | |
| 2667 done = 1; /* We're done. */ | |
| 2668 continue; /* Don't call next_event_internal */ | |
| 2669 } | |
| 2670 | |
| 2671 next_event_internal (event, 0); | |
| 2672 switch (XEVENT_TYPE (event)) | |
| 2673 { | |
| 2674 case process_event: | |
| 2675 { | |
| 2676 if (NILP (process) || | |
| 1204 | 2677 EQ (XEVENT_PROCESS_PROCESS (event), process)) |
| 428 | 2678 { |
| 2679 done = 1; | |
| 2680 /* RMS's version always returns nil when proc is nil, | |
| 2681 and only returns t if input ever arrived on proc. */ | |
| 2682 result = Qt; | |
| 2683 } | |
| 2684 | |
| 2685 execute_internal_event (event); | |
| 2686 break; | |
| 2687 } | |
| 2688 case timeout_event: | |
| 2689 /* We execute the event even if it's ours, and notice that it's | |
| 2690 happened above. */ | |
| 2691 case pointer_motion_event: | |
| 2692 case magic_event: | |
| 2693 { | |
| 2694 execute_internal_event (event); | |
| 2695 break; | |
| 2696 } | |
| 2697 default: | |
| 2698 { | |
| 2699 enqueue_command_event_1 (event); | |
| 2700 break; | |
| 2701 } | |
| 2702 } | |
| 2703 } | |
| 2704 | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2705 unbind_to_1 (count, timeout_enabled ? make_fixnum (timeout_id) : Qnil); |
| 428 | 2706 |
| 2707 Fdeallocate_event (event); | |
| 853 | 2708 |
| 2709 status_notify (); | |
| 2710 | |
| 428 | 2711 UNGCPRO; |
| 2712 current_buffer = old_buffer; | |
| 2713 return result; | |
| 2714 } | |
| 2715 | |
| 2716 DEFUN ("sleep-for", Fsleep_for, 1, 1, 0, /* | |
| 444 | 2717 Pause, without updating display, for SECONDS seconds. |
| 2718 SECONDS may be a float, allowing pauses for fractional parts of a second. | |
| 428 | 2719 |
| 2720 It is recommended that you never call sleep-for from inside of a process | |
| 444 | 2721 filter function or timer event (either synchronous or asynchronous). |
| 428 | 2722 */ |
| 2723 (seconds)) | |
| 2724 { | |
| 2725 /* This function can GC */ | |
| 2726 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1); | |
| 2727 int id; | |
| 2728 Lisp_Object event = Qnil; | |
| 2729 int count; | |
| 2730 struct gcpro gcpro1; | |
| 2731 | |
| 2732 GCPRO1 (event); | |
| 2733 | |
| 2734 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0); | |
| 2735 event = Fmake_event (Qnil, Qnil); | |
| 2736 | |
| 2737 count = specpdl_depth (); | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2738 record_unwind_protect (sit_for_unwind, make_fixnum (id)); |
| 1268 | 2739 recursive_sit_for = 1; |
| 428 | 2740 |
| 2741 while (1) | |
| 2742 { | |
| 2743 /* If our timeout has arrived, we move along. */ | |
| 2744 if (!event_stream_wakeup_pending_p (id, 0)) | |
| 2745 goto DONE_LABEL; | |
| 2746 | |
| 2747 /* We're a generator of the command_event_queue, so we can't be a | |
| 2748 consumer as well. We don't care about command and eval-events | |
| 2749 anyway. | |
| 2750 */ | |
| 2751 next_event_internal (event, 0); /* blocks */ | |
| 2752 switch (XEVENT_TYPE (event)) | |
| 2753 { | |
| 2754 case timeout_event: | |
| 2755 /* We execute the event even if it's ours, and notice that it's | |
| 2756 happened above. */ | |
| 2757 case process_event: | |
| 2758 case pointer_motion_event: | |
| 2759 case magic_event: | |
| 2760 { | |
| 2761 execute_internal_event (event); | |
| 2762 break; | |
| 2763 } | |
| 2764 default: | |
| 2765 { | |
| 2766 enqueue_command_event_1 (event); | |
| 2767 break; | |
| 2768 } | |
| 2769 } | |
| 2770 } | |
| 2771 DONE_LABEL: | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2772 unbind_to_1 (count, make_fixnum (id)); |
| 428 | 2773 Fdeallocate_event (event); |
| 2774 UNGCPRO; | |
| 2775 return Qnil; | |
| 2776 } | |
| 2777 | |
| 2778 DEFUN ("sit-for", Fsit_for, 1, 2, 0, /* | |
| 444 | 2779 Perform redisplay, then wait SECONDS seconds or until user input is available. |
| 2780 SECONDS may be a float, meaning a fractional part of a second. | |
| 2781 Optional second arg NODISPLAY non-nil means don't redisplay; just wait. | |
| 428 | 2782 Redisplay is preempted as always if user input arrives, and does not |
| 2783 happen if input is available before it starts. | |
| 2784 Value is t if waited the full time with no input arriving. | |
| 2785 | |
| 2786 If sit-for is called from within a process filter function or timer | |
| 2787 event (either synchronous or asynchronous) it will return immediately. | |
| 2788 */ | |
| 2789 (seconds, nodisplay)) | |
| 2790 { | |
| 2791 /* This function can GC */ | |
| 2792 unsigned long msecs = lisp_number_to_milliseconds (seconds, 1); | |
| 2793 Lisp_Object event, result; | |
| 2794 struct gcpro gcpro1; | |
| 2795 int id; | |
| 2796 int count; | |
| 2797 | |
| 2798 /* The unread-command-events count as pending input */ | |
| 2799 if (!NILP (Vunread_command_events) || !NILP (Vunread_command_event)) | |
| 2800 return Qnil; | |
| 2801 | |
| 2802 /* If the command-builder already has user-input on it (not eval events) | |
| 2803 then that means we're done too. | |
| 2804 */ | |
| 2805 if (!NILP (command_event_queue)) | |
| 2806 { | |
| 2807 EVENT_CHAIN_LOOP (event, command_event_queue) | |
| 2808 { | |
| 2809 if (command_event_p (event)) | |
| 2810 return Qnil; | |
| 2811 } | |
| 2812 } | |
| 2813 | |
| 2814 /* If we're in a macro, or noninteractive, or early in temacs, then | |
| 2815 don't wait. */ | |
| 2816 if (noninteractive || !NILP (Vexecuting_macro)) | |
| 2817 return Qnil; | |
| 2818 | |
| 2819 /* Recursive call from a filter function or timeout handler. */ | |
| 1268 | 2820 if (recursive_sit_for) |
| 428 | 2821 { |
| 2822 if (!event_stream_event_pending_p (1) && NILP (nodisplay)) | |
| 2823 redisplay (); | |
| 2824 return Qnil; | |
| 2825 } | |
| 2826 | |
| 2827 | |
| 2828 /* Otherwise, start reading events from the event_stream. | |
| 2829 Do this loop at least once even if (sit-for 0) so that we | |
| 2830 redisplay when no input pending. | |
| 2831 */ | |
| 2832 GCPRO1 (event); | |
| 2833 event = Fmake_event (Qnil, Qnil); | |
| 2834 | |
| 2835 /* Generate the wakeup even if MSECS is 0, so that existing timeout/etc. | |
| 2836 events get processed. The old (pre-19.12) code special-cased this | |
| 2837 and didn't generate a wakeup, but the resulting behavior was less than | |
| 2838 ideal; viz. the occurrence of (sit-for 0.001) scattered throughout | |
| 2839 the E-Lisp universe. */ | |
| 2840 | |
| 2841 id = event_stream_generate_wakeup (msecs, 0, Qnil, Qnil, 0); | |
| 2842 | |
| 2843 count = specpdl_depth (); | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2844 record_unwind_protect (sit_for_unwind, make_fixnum (id)); |
| 1268 | 2845 recursive_sit_for = 1; |
| 428 | 2846 |
| 2847 while (1) | |
| 2848 { | |
| 2849 /* If there is no user input pending, then redisplay. | |
| 2850 */ | |
| 2851 if (!event_stream_event_pending_p (1) && NILP (nodisplay)) | |
| 2852 redisplay (); | |
| 2853 | |
| 2854 /* If our timeout has arrived, we move along. */ | |
| 2855 if (!event_stream_wakeup_pending_p (id, 0)) | |
| 2856 { | |
| 2857 result = Qt; | |
| 2858 goto DONE_LABEL; | |
| 2859 } | |
| 2860 | |
| 2861 /* We're a generator of the command_event_queue, so we can't be a | |
| 2862 consumer as well. In fact, we know there's nothing on the | |
| 2863 command_event_queue that we didn't just put there. | |
| 2864 */ | |
| 2865 next_event_internal (event, 0); /* blocks */ | |
| 2866 | |
| 2867 if (command_event_p (event)) | |
| 2868 { | |
| 2869 result = Qnil; | |
| 2870 goto DONE_LABEL; | |
| 2871 } | |
| 2872 switch (XEVENT_TYPE (event)) | |
| 2873 { | |
| 2874 case eval_event: | |
| 2875 { | |
| 2876 /* eval-events get delayed until later. */ | |
| 2877 enqueue_command_event (Fcopy_event (event, Qnil)); | |
| 2878 break; | |
| 2879 } | |
| 2880 | |
| 2881 case timeout_event: | |
| 2882 /* We execute the event even if it's ours, and notice that it's | |
| 2883 happened above. */ | |
| 2884 default: | |
| 2885 { | |
| 2886 execute_internal_event (event); | |
| 2887 break; | |
| 2888 } | |
| 2889 } | |
| 2890 } | |
| 2891 | |
| 2892 DONE_LABEL: | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2893 unbind_to_1 (count, make_fixnum (id)); |
| 428 | 2894 |
| 2895 /* Put back the event (if any) that made Fsit_for() exit before the | |
| 2896 timeout. Note that it is being added to the back of the queue, which | |
| 2897 would be inappropriate if there were any user events on the queue | |
| 2898 already: we would be misordering them. But we know that there are | |
| 2899 no user-events on the queue, or else we would not have reached this | |
| 2900 point at all. | |
| 2901 */ | |
| 2902 if (NILP (result)) | |
| 2903 enqueue_command_event (event); | |
| 2904 else | |
| 2905 Fdeallocate_event (event); | |
| 2906 | |
| 2907 UNGCPRO; | |
| 2908 return result; | |
| 2909 } | |
| 2910 | |
| 442 | 2911 /* This handy little function is used by select-x.c to wait for replies |
| 2912 from processes that aren't really processes (e.g. the X server) */ | |
| 428 | 2913 void |
| 2914 wait_delaying_user_input (int (*predicate) (void *arg), void *predicate_arg) | |
| 2915 { | |
| 2916 /* This function can GC */ | |
| 2917 Lisp_Object event = Fmake_event (Qnil, Qnil); | |
| 2918 struct gcpro gcpro1; | |
| 2919 GCPRO1 (event); | |
| 2920 | |
| 2921 while (!(*predicate) (predicate_arg)) | |
| 2922 { | |
| 2923 /* We're a generator of the command_event_queue, so we can't be a | |
| 2924 consumer as well. Also, we have no reason to consult the | |
| 2925 command_event_queue; there are only user and eval-events there, | |
| 2926 and we'd just have to put them back anyway. | |
| 2927 */ | |
| 2928 next_event_internal (event, 0); | |
| 2929 if (command_event_p (event) | |
| 2930 || (XEVENT_TYPE (event) == eval_event) | |
| 2931 || (XEVENT_TYPE (event) == magic_eval_event)) | |
| 2932 enqueue_command_event_1 (event); | |
| 2933 else | |
| 2934 execute_internal_event (event); | |
| 2935 } | |
| 2936 UNGCPRO; | |
| 2937 } | |
| 2938 | |
| 2939 | |
| 2940 /**********************************************************************/ | |
| 2941 /* dispatching events; command builder */ | |
| 2942 /**********************************************************************/ | |
| 2943 | |
| 2944 static void | |
| 2945 execute_internal_event (Lisp_Object event) | |
| 2946 { | |
| 1292 | 2947 PROFILE_DECLARE (); |
| 2948 | |
| 428 | 2949 /* events on dead channels get silently eaten */ |
| 2950 if (object_dead_p (XEVENT (event)->channel)) | |
| 2951 return; | |
| 2952 | |
| 1292 | 2953 PROFILE_RECORD_ENTERING_SECTION (QSexecute_internal_event); |
| 2954 | |
| 428 | 2955 /* This function can GC */ |
| 2956 switch (XEVENT_TYPE (event)) | |
| 2957 { | |
| 2958 case empty_event: | |
| 1292 | 2959 goto done; |
| 428 | 2960 |
| 2961 case eval_event: | |
| 2962 { | |
| 1204 | 2963 call1 (XEVENT_EVAL_FUNCTION (event), |
| 2964 XEVENT_EVAL_OBJECT (event)); | |
| 1292 | 2965 goto done; |
| 428 | 2966 } |
| 2967 | |
| 2968 case magic_eval_event: | |
| 2969 { | |
| 1204 | 2970 XEVENT_MAGIC_EVAL_INTERNAL_FUNCTION (event) |
| 2971 XEVENT_MAGIC_EVAL_OBJECT (event); | |
| 1292 | 2972 goto done; |
| 428 | 2973 } |
| 2974 | |
| 2975 case pointer_motion_event: | |
| 2976 { | |
| 2977 if (!NILP (Vmouse_motion_handler)) | |
| 2978 call1 (Vmouse_motion_handler, event); | |
| 1292 | 2979 goto done; |
| 428 | 2980 } |
| 2981 | |
| 2982 case process_event: | |
| 2983 { | |
| 1204 | 2984 Lisp_Object p = XEVENT_PROCESS_PROCESS (event); |
| 428 | 2985 Charcount readstatus; |
| 853 | 2986 int iter; |
| 2987 | |
| 2988 assert (PROCESSP (p)); | |
| 2989 for (iter = 0; iter < 2; iter++) | |
| 2990 { | |
| 2991 if (iter == 1 && !process_has_separate_stderr (p)) | |
| 2992 break; | |
| 2993 while ((readstatus = read_process_output (p, iter)) > 0) | |
| 2994 ; | |
| 2995 if (readstatus > 0) | |
| 2996 ; /* this clauses never gets executed but | |
| 2997 allows the #ifdefs to work cleanly. */ | |
| 428 | 2998 #ifdef EWOULDBLOCK |
| 853 | 2999 else if (readstatus == -1 && errno == EWOULDBLOCK) |
| 3000 ; | |
| 428 | 3001 #endif /* EWOULDBLOCK */ |
| 3002 #ifdef EAGAIN | |
| 853 | 3003 else if (readstatus == -1 && errno == EAGAIN) |
| 3004 ; | |
| 428 | 3005 #endif /* EAGAIN */ |
| 853 | 3006 else if ((readstatus == 0 && |
| 3007 /* Note that we cannot distinguish between no input | |
| 3008 available now and a closed pipe. | |
| 3009 With luck, a closed pipe will be accompanied by | |
| 3010 subprocess termination and SIGCHLD. */ | |
| 3011 (!network_connection_p (p) || | |
| 3012 /* | |
| 3013 When connected to ToolTalk (i.e. | |
| 3014 connected_via_filedesc_p()), it's not possible to | |
| 3015 reliably determine whether there is a message | |
| 3016 waiting for ToolTalk to receive. ToolTalk expects | |
| 3017 to have tt_message_receive() called exactly once | |
| 3018 every time the file descriptor becomes active, so | |
| 3019 the filter function forces this by returning 0. | |
| 3020 Emacs must not interpret this as a closed pipe. */ | |
| 3021 connected_via_filedesc_p (XPROCESS (p)))) | |
| 3022 | |
| 3023 /* On some OSs with ptys, when the process on one end of | |
| 3024 a pty exits, the other end gets an error reading with | |
| 3025 errno = EIO instead of getting an EOF (0 bytes read). | |
| 3026 Therefore, if we get an error reading and errno = | |
| 3027 EIO, just continue, because the child process has | |
| 3028 exited and should clean itself up soon (e.g. when we | |
| 3029 get a SIGCHLD). */ | |
| 535 | 3030 #ifdef EIO |
| 853 | 3031 || (readstatus == -1 && errno == EIO) |
| 428 | 3032 #endif |
| 535 | 3033 |
| 853 | 3034 ) |
| 3035 { | |
| 3036 /* Currently, we rely on SIGCHLD to indicate that the | |
| 3037 process has terminated. Unfortunately, on some systems | |
| 3038 the SIGCHLD gets missed some of the time. So we put an | |
| 3039 additional check in status_notify() to see whether a | |
| 3040 process has terminated. We must tell status_notify() | |
| 3041 to enable that check, and we do so now. */ | |
| 3042 kick_status_notify (); | |
| 3043 } | |
| 898 | 3044 else |
| 3045 { | |
| 3046 /* Deactivate network connection */ | |
| 3047 Lisp_Object status = Fprocess_status (p); | |
| 3048 if (EQ (status, Qopen) | |
| 3049 /* In case somebody changes the theory of whether to | |
| 3050 return open as opposed to run for network connection | |
| 3051 "processes"... */ | |
| 3052 || EQ (status, Qrun)) | |
| 3053 update_process_status (p, Qexit, 256, 0); | |
| 3054 deactivate_process (p); | |
| 3055 status_notify (); | |
| 3056 } | |
| 853 | 3057 |
| 3058 /* We must call status_notify here to allow the | |
| 3059 event_stream->unselect_process_cb to be run if appropriate. | |
| 3060 Otherwise, dead fds may be selected for, and we will get a | |
| 3061 continuous stream of process events for them. Since we don't | |
| 3062 return until all process events have been flushed, we would | |
| 3063 get stuck here, processing events on a process whose status | |
| 3025 | 3064 was `exit'. Call this after dispatch-event, or the fds will |
| 853 | 3065 have been closed before we read the last data from them. |
| 3066 It's safe for the filter to signal an error because | |
| 3067 status_notify() will be called on return to top-level. | |
| 3068 */ | |
| 3069 status_notify (); | |
| 428 | 3070 } |
| 1292 | 3071 goto done; |
| 428 | 3072 } |
| 3073 | |
| 3074 case timeout_event: | |
| 3075 { | |
| 440 | 3076 Lisp_Event *e = XEVENT (event); |
| 934 | 3077 |
| 1204 | 3078 if (!NILP (EVENT_TIMEOUT_FUNCTION (e))) |
| 3079 call1 (EVENT_TIMEOUT_FUNCTION (e), | |
| 3080 EVENT_TIMEOUT_OBJECT (e)); | |
| 1292 | 3081 goto done; |
| 428 | 3082 } |
| 3083 case magic_event: | |
| 3084 event_stream_handle_magic_event (XEVENT (event)); | |
| 1292 | 3085 goto done; |
| 428 | 3086 default: |
| 2500 | 3087 ABORT (); |
| 428 | 3088 } |
| 1292 | 3089 |
| 3090 done: | |
| 3091 PROFILE_RECORD_EXITING_SECTION (QSexecute_internal_event); | |
| 428 | 3092 } |
| 3093 | |
| 3094 | |
| 3095 | |
| 3096 static void | |
| 3097 this_command_keys_replace_suffix (Lisp_Object suffix, Lisp_Object chain) | |
| 3098 { | |
| 3099 Lisp_Object first_before_suffix = | |
| 3100 event_chain_find_previous (Vthis_command_keys, suffix); | |
| 3101 | |
| 3102 if (NILP (first_before_suffix)) | |
| 3103 Vthis_command_keys = chain; | |
| 3104 else | |
| 3105 XSET_EVENT_NEXT (first_before_suffix, chain); | |
| 3106 deallocate_event_chain (suffix); | |
| 3107 Vthis_command_keys_tail = event_chain_tail (chain); | |
| 3108 } | |
| 3109 | |
| 3110 static void | |
| 3111 command_builder_replace_suffix (struct command_builder *builder, | |
| 3112 Lisp_Object suffix, Lisp_Object chain) | |
| 3113 { | |
| 3114 Lisp_Object first_before_suffix = | |
| 3115 event_chain_find_previous (builder->current_events, suffix); | |
| 3116 | |
| 3117 if (NILP (first_before_suffix)) | |
| 3118 builder->current_events = chain; | |
| 3119 else | |
| 3120 XSET_EVENT_NEXT (first_before_suffix, chain); | |
| 3121 deallocate_event_chain (suffix); | |
| 3122 builder->most_current_event = event_chain_tail (chain); | |
| 3123 } | |
| 3124 | |
| 3125 static Lisp_Object | |
| 3126 command_builder_find_leaf_1 (struct command_builder *builder) | |
| 3127 { | |
| 3128 Lisp_Object event0 = builder->current_events; | |
| 3129 | |
| 3130 if (NILP (event0)) | |
| 3131 return Qnil; | |
| 3132 | |
| 3133 return event_binding (event0, 1); | |
| 3134 } | |
| 3135 | |
| 1268 | 3136 static void |
| 3137 maybe_kbd_translate (Lisp_Object event) | |
| 3138 { | |
| 3139 Ichar c; | |
| 3140 int did_translate = 0; | |
| 3141 | |
| 3142 if (XEVENT_TYPE (event) != key_press_event) | |
| 3143 return; | |
| 3144 if (!HASH_TABLEP (Vkeyboard_translate_table)) | |
| 3145 return; | |
| 3146 if (EQ (Fhash_table_count (Vkeyboard_translate_table), Qzero)) | |
| 3147 return; | |
| 3148 | |
| 2828 | 3149 c = event_to_character (event, 0, 0); |
| 1268 | 3150 if (c != -1) |
| 3151 { | |
| 3152 Lisp_Object traduit = Fgethash (make_char (c), Vkeyboard_translate_table, | |
| 3153 Qnil); | |
| 3154 if (!NILP (traduit) && SYMBOLP (traduit)) | |
| 3155 { | |
| 3156 XSET_EVENT_KEY_KEYSYM (event, traduit); | |
| 3157 XSET_EVENT_KEY_MODIFIERS (event, 0); | |
| 3158 did_translate = 1; | |
| 3159 } | |
| 3160 else if (CHARP (traduit)) | |
| 3161 { | |
| 3162 /* This used to call Fcharacter_to_event() directly into EVENT, | |
| 3163 but that can eradicate timestamps and other such stuff. | |
| 3164 This way is safer. */ | |
| 3165 Lisp_Object ev2 = Fmake_event (Qnil, Qnil); | |
| 3166 | |
| 3167 character_to_event (XCHAR (traduit), XEVENT (ev2), | |
|
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Call character_to_event on characters received from XIM, event-Xt.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
4775
diff
changeset
|
3168 XCONSOLE (XEVENT_CHANNEL (event)), |
|
2fd201d73a92
Call character_to_event on characters received from XIM, event-Xt.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
4775
diff
changeset
|
3169 high_bit_is_meta, 1); |
| 1268 | 3170 XSET_EVENT_KEY_KEYSYM (event, XEVENT_KEY_KEYSYM (ev2)); |
| 3171 XSET_EVENT_KEY_MODIFIERS (event, XEVENT_KEY_MODIFIERS (ev2)); | |
| 3172 Fdeallocate_event (ev2); | |
| 3173 did_translate = 1; | |
| 3174 } | |
| 3175 } | |
| 3176 | |
| 3177 if (!did_translate) | |
| 3178 { | |
| 3179 Lisp_Object traduit = Fgethash (XEVENT_KEY_KEYSYM (event), | |
| 3180 Vkeyboard_translate_table, Qnil); | |
| 3181 if (!NILP (traduit) && SYMBOLP (traduit)) | |
| 3182 { | |
| 3183 XSET_EVENT_KEY_KEYSYM (event, traduit); | |
| 3184 did_translate = 1; | |
| 3185 } | |
| 3186 else if (CHARP (traduit)) | |
| 3187 { | |
| 3188 /* This used to call Fcharacter_to_event() directly into EVENT, | |
| 3189 but that can eradicate timestamps and other such stuff. | |
| 3190 This way is safer. */ | |
| 3191 Lisp_Object ev2 = Fmake_event (Qnil, Qnil); | |
| 3192 | |
| 3193 character_to_event (XCHAR (traduit), XEVENT (ev2), | |
|
4780
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Call character_to_event on characters received from XIM, event-Xt.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
4775
diff
changeset
|
3194 XCONSOLE (XEVENT_CHANNEL (event)), |
|
2fd201d73a92
Call character_to_event on characters received from XIM, event-Xt.c
Aidan Kehoe <kehoea@parhasard.net>
parents:
4775
diff
changeset
|
3195 high_bit_is_meta, 1); |
| 1268 | 3196 XSET_EVENT_KEY_KEYSYM (event, XEVENT_KEY_KEYSYM (ev2)); |
| 3197 XSET_EVENT_KEY_MODIFIERS (event, | |
| 3198 XEVENT_KEY_MODIFIERS (event) | | |
| 3199 XEVENT_KEY_MODIFIERS (ev2)); | |
| 3200 | |
| 3201 Fdeallocate_event (ev2); | |
| 3202 did_translate = 1; | |
| 3203 } | |
| 3204 } | |
| 3205 | |
| 3206 #ifdef DEBUG_XEMACS | |
| 3207 if (did_translate) | |
| 3208 DEBUG_PRINT_EMACS_EVENT ("->keyboard-translate-table", event); | |
| 3209 #endif | |
| 3210 } | |
| 3211 | |
| 428 | 3212 /* See if we can do function-key-map or key-translation-map translation |
| 3213 on the current events in the command builder. If so, do this, and | |
| 771 | 3214 return the resulting binding, if any. |
| 3215 | |
| 3216 DID_MUNGE must be initialized before calling this function. If munging | |
| 3217 happened, DID_MUNGE will be non-zero; otherwise, it will be left alone. | |
| 3218 */ | |
| 428 | 3219 |
| 3220 static Lisp_Object | |
| 3221 munge_keymap_translate (struct command_builder *builder, | |
| 3222 enum munge_me_out_the_door munge, | |
| 771 | 3223 int has_normal_binding_p, int *did_munge) |
| 428 | 3224 { |
| 3225 Lisp_Object suffix; | |
| 3226 | |
| 1204 | 3227 EVENT_CHAIN_LOOP (suffix, builder->first_mungeable_event[munge]) |
| 428 | 3228 { |
| 3229 Lisp_Object result = munging_key_map_event_binding (suffix, munge); | |
| 3230 | |
| 3231 if (NILP (result)) | |
| 3232 continue; | |
| 3233 | |
| 3234 if (KEYMAPP (result)) | |
| 3235 { | |
| 3236 if (NILP (builder->last_non_munged_event) | |
| 3237 && !has_normal_binding_p) | |
| 3238 builder->last_non_munged_event = builder->most_current_event; | |
| 3239 } | |
| 3240 else | |
| 3241 builder->last_non_munged_event = Qnil; | |
| 3242 | |
| 3243 if (!KEYMAPP (result) && | |
| 3244 !VECTORP (result) && | |
| 3245 !STRINGP (result)) | |
| 3246 { | |
| 3247 struct gcpro gcpro1; | |
| 3248 GCPRO1 (suffix); | |
| 3249 result = call1 (result, Qnil); | |
| 3250 UNGCPRO; | |
| 3251 if (NILP (result)) | |
| 3252 return Qnil; | |
| 3253 } | |
| 3254 | |
| 3255 if (KEYMAPP (result)) | |
| 3256 return result; | |
| 3257 | |
| 3258 if (VECTORP (result) || STRINGP (result)) | |
| 3259 { | |
| 3260 Lisp_Object new_chain = key_sequence_to_event_chain (result); | |
| 3261 Lisp_Object tempev; | |
| 3262 | |
| 3263 /* If the first_mungeable_event of the other munger is | |
| 3264 within the events we're munging, then it will point to | |
| 3265 deallocated events afterwards, which is bad -- so make it | |
| 3266 point at the beginning of the munged events. */ | |
| 3267 EVENT_CHAIN_LOOP (tempev, suffix) | |
| 3268 { | |
| 3269 Lisp_Object *mungeable_event = | |
| 1204 | 3270 &builder->first_mungeable_event[1 - munge]; |
| 428 | 3271 if (EQ (tempev, *mungeable_event)) |
| 3272 { | |
| 3273 *mungeable_event = new_chain; | |
| 3274 break; | |
| 3275 } | |
| 3276 } | |
| 3277 | |
| 771 | 3278 /* Now munge the current event chain in the command builder. */ |
| 428 | 3279 command_builder_replace_suffix (builder, suffix, new_chain); |
| 1204 | 3280 builder->first_mungeable_event[munge] = Qnil; |
| 771 | 3281 |
| 3282 *did_munge = 1; | |
| 428 | 3283 |
| 793 | 3284 return command_builder_find_leaf_1 (builder); |
| 428 | 3285 } |
| 3286 | |
| 563 | 3287 signal_error (Qinvalid_key_binding, |
| 3288 (munge == MUNGE_ME_FUNCTION_KEY ? | |
| 3289 "Invalid binding in function-key-map" : | |
| 3290 "Invalid binding in key-translation-map"), | |
| 3291 result); | |
| 428 | 3292 } |
| 3293 | |
| 3294 return Qnil; | |
| 3295 } | |
| 3296 | |
| 2828 | 3297 /* Same as command_builder_find_leaf() below, but without offering the |
| 3298 platform-specific event code the opportunity to give a default binding of | |
| 3299 an unseen keysym to self-insert-command, and without the fallback to | |
| 3300 other keymaps for lookups that allows someone with a Cyrillic keyboard | |
| 3301 to pretend it's Qwerty for C-x C-f, for example. */ | |
| 771 | 3302 |
| 428 | 3303 static Lisp_Object |
| 2828 | 3304 command_builder_find_leaf_no_jit_binding (struct command_builder *builder, |
| 771 | 3305 int allow_misc_user_events_p, |
| 3306 int *did_munge) | |
| 428 | 3307 { |
| 3308 /* This function can GC */ | |
| 3309 Lisp_Object result; | |
| 3310 Lisp_Object evee = builder->current_events; | |
| 3311 | |
| 3312 if (XEVENT_TYPE (evee) == misc_user_event) | |
| 3313 { | |
| 3314 if (allow_misc_user_events_p && (NILP (XEVENT_NEXT (evee)))) | |
| 1204 | 3315 return list2 (XEVENT_EVAL_FUNCTION (evee), |
| 3316 XEVENT_EVAL_OBJECT (evee)); | |
| 428 | 3317 else |
| 3318 return Qnil; | |
| 3319 } | |
| 3320 | |
| 442 | 3321 /* if we're currently in a menu accelerator, check there for further |
| 3322 events */ | |
| 3323 /* #### fuck me! who wrote this crap? think "abstraction", baby. */ | |
| 771 | 3324 /* #### this horribly-written crap can mess with global state, which |
| 3325 this function should not do. i'm not fixing it now. someone | |
| 3326 needs to go and rewrite that shit correctly. --ben */ | |
| 1268 | 3327 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID) |
| 442 | 3328 if (x_kludge_lw_menu_active ()) |
| 428 | 3329 { |
| 3330 return command_builder_operate_menu_accelerator (builder); | |
| 3331 } | |
| 3332 else | |
| 3333 { | |
| 3334 result = Qnil; | |
| 3335 if (EQ (Vmenu_accelerator_enabled, Qmenu_force)) | |
| 3336 result = command_builder_find_menu_accelerator (builder); | |
| 3337 if (NILP (result)) | |
| 3338 #endif | |
| 3339 result = command_builder_find_leaf_1 (builder); | |
| 1268 | 3340 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID) |
| 428 | 3341 if (NILP (result) |
| 3342 && EQ (Vmenu_accelerator_enabled, Qmenu_fallback)) | |
| 3343 result = command_builder_find_menu_accelerator (builder); | |
| 3344 } | |
| 3345 #endif | |
| 3346 | |
| 3347 /* Check to see if we have a potential function-key-map match. */ | |
| 3348 if (NILP (result)) | |
| 771 | 3349 result = munge_keymap_translate (builder, MUNGE_ME_FUNCTION_KEY, 0, |
| 3350 did_munge); | |
| 3351 | |
| 428 | 3352 /* Check to see if we have a potential key-translation-map match. */ |
| 3353 { | |
| 3354 Lisp_Object key_translate_result = | |
| 3355 munge_keymap_translate (builder, MUNGE_ME_KEY_TRANSLATION, | |
| 771 | 3356 !NILP (result), did_munge); |
| 428 | 3357 if (!NILP (key_translate_result)) |
| 771 | 3358 result = key_translate_result; |
| 428 | 3359 } |
| 3360 | |
| 3361 if (!NILP (result)) | |
| 3362 return result; | |
| 3363 | |
| 3364 /* If key-sequence wasn't bound, we'll try some fallbacks. */ | |
| 3365 | |
| 3366 /* If we didn't find a binding, and the last event in the sequence is | |
| 3367 a shifted character, then try again with the lowercase version. */ | |
| 3368 | |
| 3369 if (XEVENT_TYPE (builder->most_current_event) == key_press_event | |
| 3370 && !NILP (Vretry_undefined_key_binding_unshifted)) | |
| 3371 { | |
| 1204 | 3372 if (event_upshifted_p (builder->most_current_event)) |
| 428 | 3373 { |
| 771 | 3374 Lisp_Object neubauten = copy_command_builder (builder, 0); |
| 3375 struct command_builder *neub = XCOMMAND_BUILDER (neubauten); | |
| 3376 struct gcpro gcpro1; | |
| 3377 | |
| 3378 GCPRO1 (neubauten); | |
| 1204 | 3379 downshift_event (event_chain_tail (neub->current_events)); |
| 771 | 3380 result = |
| 2828 | 3381 command_builder_find_leaf_no_jit_binding |
| 771 | 3382 (neub, allow_misc_user_events_p, did_munge); |
| 3383 | |
| 428 | 3384 if (!NILP (result)) |
| 771 | 3385 { |
| 3386 copy_command_builder (neub, builder); | |
| 3387 *did_munge = 1; | |
| 3388 } | |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
3389 free_normal_lisp_object (wrap_command_builder (neub)); |
| 771 | 3390 UNGCPRO; |
| 3391 if (!NILP (result)) | |
| 428 | 3392 return result; |
| 3393 } | |
| 3394 } | |
| 3395 | |
| 3396 /* help-char is `auto-bound' in every keymap */ | |
| 3397 if (!NILP (Vprefix_help_command) && | |
| 1204 | 3398 event_matches_key_specifier_p (builder->most_current_event, Vhelp_char)) |
| 428 | 3399 return Vprefix_help_command; |
| 3400 | |
| 771 | 3401 return Qnil; |
| 3402 } | |
| 3403 | |
| 3404 /* Compare the current state of the command builder against the local and | |
| 3405 global keymaps, and return the binding. If there is no match, try again, | |
| 3406 case-insensitively. The return value will be one of: | |
| 3407 -- nil (there is no binding) | |
| 3408 -- a keymap (part of a command has been specified) | |
| 3409 -- a command (anything that satisfies `commandp'; this includes | |
| 3410 some symbols, lists, subrs, strings, vectors, and | |
| 3411 compiled-function objects) | |
| 3412 | |
| 3413 This may "munge" the current event chain in the command builder; | |
| 3414 i.e. the sequence might be mutated into a different sequence, | |
| 3415 which we then pretend is what the user actually typed instead of | |
| 3416 the passed-in sequence. This happens as a result of: | |
| 3417 | |
| 3418 -- key-translation-map changes | |
| 3419 -- function-key-map changes | |
| 3420 -- retry-undefined-key-binding-unshifted (q.v.) | |
| 3421 -- "Russian C-x problem" changes (see definition of struct key_data, | |
| 3422 events.h) | |
| 3423 | |
| 3424 DID_MUNGE must be initialized before calling this function. If munging | |
| 3425 happened, DID_MUNGE will be non-zero; otherwise, it will be left alone. | |
| 2828 | 3426 |
| 3427 (The above was Ben, I think.) | |
| 3428 | |
| 3429 It might be nice to have lookup-key call this function, directly or | |
| 3430 indirectly. Though it is arguably the right thing if lookup-key fails on | |
| 3431 a keysym that the X11 event code hasn't seen. There's no way to know if | |
| 3432 that keysym is generatable by the keyboard until it's generated, | |
| 3433 therefore there's no reasonable expectation that it be bound before it's | |
| 3434 generated--all the other default bindings depend on our knowing the | |
| 3435 keyboard layout and relying on it. And describe-key works without it, so | |
| 3436 I think we're fine. | |
| 3437 | |
| 3438 Some weirdness with this code--try this on a keyboard where X11 will | |
| 3439 produce ediaeresis with dead-diaeresis and e, but it's not produced by | |
| 3440 any other combination of keys on the keyboard; | |
| 3441 | |
| 3442 (defun ding-command () | |
| 3443 (interactive) | |
| 3444 (ding)) | |
| 3445 | |
| 3446 (define-key global-map 'ediaeresis 'ding-command) | |
| 3447 | |
| 3448 Now, pressing dead-diaeresis and then e will ding. Next; | |
| 3449 | |
| 3450 (define-key global-map 'ediaeresis 'self-insert-command) | |
| 3451 | |
| 3452 and press dead-diaeresis and then e. It'll give you "Invalid argument: | |
| 3453 typed key has no ASCII equivalent" Then; | |
| 3454 | |
| 3455 (define-key global-map 'ediaeresis nil) | |
| 3456 | |
| 3457 and press the combination again; it'll self-insert. The moral of the | |
| 3458 story is, if you want to suppress all bindings to a non-ASCII X11 key, | |
| 3459 bind it to a trivial no-op command, because the automatic mapping to | |
| 3460 self-insert-command will happen if there's no existing binding for the | |
| 3461 symbol. I can't see a way around this. -- Aidan Kehoe, 2005-05-14 */ | |
| 771 | 3462 |
| 3463 static Lisp_Object | |
| 3464 command_builder_find_leaf (struct command_builder *builder, | |
| 3465 int allow_misc_user_events_p, | |
| 3466 int *did_munge) | |
| 3467 { | |
| 3468 Lisp_Object result = | |
| 2828 | 3469 command_builder_find_leaf_no_jit_binding |
| 771 | 3470 (builder, allow_misc_user_events_p, did_munge); |
| 2828 | 3471 Lisp_Object event, console, channel, lookup_res; |
| 3472 int redolookup = 0, i; | |
| 771 | 3473 |
| 3474 if (!NILP (result)) | |
| 3475 return result; | |
| 3476 | |
| 2828 | 3477 /* If some of the events are keyboard events, and this is the first time |
| 3478 the platform event code has seen their keysyms--which will be the case | |
| 3479 the first time we see a composed keysym on X11, for example--offer it | |
| 3480 the chance to define them as a self-insert-command, and do the lookup | |
| 3481 again. | |
| 3482 | |
| 3483 This isn't Mule-specific; in a world where x-iso8859-1.el is gone, it's | |
| 3484 needed for non-Mule too. | |
| 3485 | |
| 3486 Probably this can just be limited to the checking the last | |
| 3487 keypress. */ | |
| 3488 | |
| 3489 EVENT_CHAIN_LOOP (event, builder->current_events) | |
| 3490 { | |
| 3491 /* We can ignore key release events because the preceding presses will | |
| 3492 have initiated the mapping. */ | |
| 3493 if (key_press_event != XEVENT_TYPE (event)) | |
| 3494 continue; | |
| 3495 | |
| 3496 channel = XEVENT_CHANNEL (event); | |
| 3497 if (object_dead_p (channel)) | |
| 3498 continue; | |
| 3499 | |
| 3500 console = CDFW_CONSOLE (channel); | |
| 3501 if (NILP (console)) | |
| 3502 console = Vselected_console; | |
| 3503 | |
| 3504 if (CONSOLE_LIVE_P(XCONSOLE(console))) | |
| 3505 { | |
| 3506 lookup_res = MAYBE_LISP_CONMETH(XCONSOLE(console), | |
| 3507 perhaps_init_unseen_key_defaults, | |
| 3508 (XCONSOLE(console), | |
| 3509 XEVENT_KEY_KEYSYM(event))); | |
| 3510 if (EQ(lookup_res, Qt)) | |
| 3511 { | |
| 3512 redolookup += 1; | |
| 3513 } | |
| 3514 } | |
| 3515 } | |
| 3516 | |
| 3517 if (redolookup) | |
| 428 | 3518 { |
| 2828 | 3519 result = command_builder_find_leaf_no_jit_binding |
| 3520 (builder, allow_misc_user_events_p, did_munge); | |
| 3521 if (!NILP (result)) | |
| 3522 { | |
| 3523 return result; | |
| 3524 } | |
| 3525 } | |
| 3526 | |
| 3527 /* The old composed-character-default-binding handling that used to be | |
| 3528 here was wrong--if a user wants to bind a given key to something other | |
| 3529 than self-insert-command, then they should go ahead and do it, we won't | |
| 3530 override it, and the sane thing to do with any key that has a known | |
| 3531 character correspondence is _always_ to default it to | |
| 3532 self-insert-command, nothing else. | |
| 3533 | |
| 3534 I'm adding the variable to control whether "Russian C-x processing" is | |
| 3535 used because I have a feeling that it's not always the most appropriate | |
| 3536 thing to do--in cases where people are using a non-Qwerty | |
| 3537 Roman-alphabet layout, do they really want C-x with some random letter | |
| 3538 to call `switch-to-buffer'? I can imagine that being very confusing, | |
| 3539 certainly for new users, and it might be that defaulting the value for | |
| 3540 `try-alternate-layouts-for-commands' as part of the language | |
| 3541 environment is the right thing to do, only defaulting to `t' for those | |
| 3542 languages that don't use the Roman alphabet. | |
| 3543 | |
| 3544 Much of that reasoning is tentative on my part, and feel free to change | |
| 3545 this code if you have more experience with the problem and an intuition | |
| 3546 that differs from mine. (Aidan Kehoe, 2005-05-29)*/ | |
| 3547 | |
| 3548 if (!try_alternate_layouts_for_commands) | |
| 3549 { | |
| 3550 return Qnil; | |
| 428 | 3551 } |
| 2828 | 3552 |
| 3553 if (key_press_event == XEVENT_TYPE (builder->most_current_event)) | |
| 3554 { | |
| 3555 Lisp_Object ev = builder->most_current_event, newbuilder; | |
| 3556 Ichar this_alternative; | |
| 3557 | |
| 3558 struct command_builder *newb; | |
| 3559 struct gcpro gcpro1; | |
| 3560 | |
| 3561 /* Ignore the value for CURRENT_LANGENV, because we've checked it | |
| 3562 already, above. */ | |
| 3563 for (i = KEYCHAR_CURRENT_LANGENV, ++i; i < KEYCHAR_LAST; ++i) | |
| 3564 { | |
| 3565 this_alternative = XEVENT_KEY_ALT_KEYCHARS(ev, i); | |
| 3566 | |
| 3567 if (0 == this_alternative) | |
| 3568 continue; | |
| 3569 | |
| 3570 newbuilder = copy_command_builder(builder, 0); | |
| 3571 GCPRO1(newbuilder); | |
| 3572 | |
| 3573 newb = XCOMMAND_BUILDER(newbuilder); | |
| 3574 | |
| 2830 | 3575 XSET_EVENT_KEY_KEYSYM(event_chain_tail |
| 3576 (XCOMMAND_BUILDER(newbuilder)->current_events), | |
| 2828 | 3577 make_char(this_alternative)); |
| 3578 | |
| 3579 result = command_builder_find_leaf_no_jit_binding | |
| 3580 (newb, allow_misc_user_events_p, did_munge); | |
| 3581 | |
| 3582 if (!NILP (result)) | |
| 3583 { | |
| 3584 copy_command_builder (newb, builder); | |
| 3585 *did_munge = 1; | |
| 3586 } | |
| 2830 | 3587 else if (event_upshifted_p |
| 3588 (XCOMMAND_BUILDER(newbuilder)->most_current_event) && | |
| 2828 | 3589 !NILP (Vretry_undefined_key_binding_unshifted) |
| 3590 && isascii(this_alternative)) | |
| 3591 { | |
| 2830 | 3592 downshift_event (event_chain_tail |
| 3593 (XCOMMAND_BUILDER(newbuilder)->current_events)); | |
| 3594 XSET_EVENT_KEY_KEYSYM(event_chain_tail | |
| 3595 (newb->current_events), | |
| 2828 | 3596 make_char(tolower(this_alternative))); |
| 3597 result = command_builder_find_leaf_no_jit_binding | |
| 3598 (newb, allow_misc_user_events_p, did_munge); | |
| 3599 } | |
| 3600 | |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
3601 free_normal_lisp_object (wrap_command_builder (newb)); |
| 2828 | 3602 UNGCPRO; |
| 3603 | |
| 3604 if (!NILP (result)) | |
| 3605 return result; | |
| 3606 } | |
| 3607 } | |
| 428 | 3608 |
| 3609 return Qnil; | |
| 3610 } | |
| 3611 | |
| 771 | 3612 /* Like command_builder_find_leaf but update this-command-keys and the |
| 3613 echo area as necessary when the current event chain was munged. */ | |
| 3614 | |
| 3615 static Lisp_Object | |
| 3616 command_builder_find_leaf_and_update_global_state (struct command_builder * | |
| 3617 builder, | |
| 3618 int | |
| 3619 allow_misc_user_events_p) | |
| 3620 { | |
| 3621 int did_munge = 0; | |
| 3622 int orig_length = event_chain_count (builder->current_events); | |
| 3623 Lisp_Object result = command_builder_find_leaf (builder, | |
| 3624 allow_misc_user_events_p, | |
| 3625 &did_munge); | |
| 3626 | |
| 3627 if (did_munge) | |
| 3628 { | |
| 3629 int tck_length = event_chain_count (Vthis_command_keys); | |
| 3630 | |
| 3631 /* We just assume that the events we just replaced are | |
| 3632 sitting in copied form at the end of this-command-keys. | |
| 3633 If the user did weird things with `dispatch-event' this | |
| 3634 may not be the case, but at least we make sure we won't | |
| 3635 crash. */ | |
| 3636 | |
| 3637 if (tck_length >= orig_length) | |
| 3638 { | |
| 3639 Lisp_Object new_chain = | |
| 3640 copy_event_chain (builder->current_events); | |
| 3641 this_command_keys_replace_suffix | |
| 3642 (event_chain_nth (Vthis_command_keys, tck_length - orig_length), | |
| 3643 new_chain); | |
| 3644 | |
| 3645 regenerate_echo_keys_from_this_command_keys (builder); | |
| 3646 } | |
| 3647 } | |
| 3648 | |
| 3649 if (NILP (result)) | |
| 3650 { | |
| 3651 /* If we read extra events attempting to match a function key but end | |
| 3652 up failing, then we release those events back to the command loop | |
| 3653 and fail on the original lookup. The released events will then be | |
| 3654 reprocessed in the context of the first part having failed. */ | |
| 3655 if (!NILP (builder->last_non_munged_event)) | |
| 3656 { | |
| 3657 Lisp_Object event0 = builder->last_non_munged_event; | |
| 3658 | |
| 3659 /* Put the commands back on the event queue. */ | |
| 3660 enqueue_event_chain (XEVENT_NEXT (event0), | |
| 3661 &command_event_queue, | |
| 3662 &command_event_queue_tail); | |
| 3663 | |
| 3664 /* Then remove them from the command builder. */ | |
| 3665 XSET_EVENT_NEXT (event0, Qnil); | |
| 3666 builder->most_current_event = event0; | |
| 3667 builder->last_non_munged_event = Qnil; | |
| 3668 } | |
| 3669 } | |
| 3670 | |
| 3671 return result; | |
| 3672 } | |
| 428 | 3673 |
| 3674 /* Every time a command-event (a key, button, or menu selection) is read by | |
| 3675 Fnext_event(), it is stored in the recent_keys_ring, in Vlast_input_event, | |
| 3676 and in Vthis_command_keys. (Eval-events are not stored there.) | |
| 3677 | |
| 3678 Every time a command is invoked, Vlast_command_event is set to the last | |
| 3679 event in the sequence. | |
| 3680 | |
| 3681 This means that Vthis_command_keys is really about "input read since the | |
| 3682 last command was executed" rather than about "what keys invoked this | |
| 3683 command." This is a little counterintuitive, but that's the way it | |
| 3684 has always worked. | |
| 3685 | |
| 3686 As an extra kink, the function read-key-sequence resets/updates the | |
| 3687 last-command-event and this-command-keys. It doesn't append to the | |
| 3688 command-keys as read-char does. Such are the pitfalls of having to | |
| 3689 maintain compatibility with a program for which the only specification | |
| 3690 is the code itself. | |
| 3691 | |
| 3692 (We could implement recent_keys_ring and Vthis_command_keys as the same | |
| 3693 data structure.) | |
| 3694 */ | |
| 3695 | |
| 3696 DEFUN ("recent-keys", Frecent_keys, 0, 1, 0, /* | |
| 3697 Return a vector of recent keyboard or mouse button events read. | |
| 3698 If NUMBER is non-nil, not more than NUMBER events will be returned. | |
| 3699 Change number of events stored using `set-recent-keys-ring-size'. | |
| 3700 | |
| 3701 This copies the event objects into a new vector; it is safe to keep and | |
| 3702 modify them. | |
| 3703 */ | |
| 3704 (number)) | |
| 3705 { | |
| 3706 struct gcpro gcpro1; | |
| 3707 Lisp_Object val = Qnil; | |
| 3708 int nwanted; | |
| 3709 int start, nkeys, i, j; | |
| 3710 GCPRO1 (val); | |
| 3711 | |
| 3712 if (NILP (number)) | |
| 3713 nwanted = recent_keys_ring_size; | |
| 3714 else | |
| 3715 { | |
|
5307
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Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
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5191
diff
changeset
|
3716 check_integer_range (number, Qzero, |
|
5736
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Convert C (un)signed long long values to bignums properly.
Jerry James <james@xemacs.org>
parents:
5722
diff
changeset
|
3717 make_fixnum (ARRAY_DIMENSION_LIMIT)); |
|
5581
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3718 nwanted = XFIXNUM (number); |
| 428 | 3719 } |
| 3720 | |
| 3721 /* Create the keys ring vector, if none present. */ | |
| 3722 if (NILP (Vrecent_keys_ring)) | |
| 3723 { | |
| 3724 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil); | |
| 3725 /* And return nothing in particular. */ | |
| 446 | 3726 RETURN_UNGCPRO (make_vector (0, Qnil)); |
| 428 | 3727 } |
| 3728 | |
| 3729 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index])) | |
| 3730 /* This means the vector has not yet wrapped */ | |
| 3731 { | |
| 3732 nkeys = recent_keys_ring_index; | |
| 3733 start = 0; | |
| 3734 } | |
| 3735 else | |
| 3736 { | |
| 3737 nkeys = recent_keys_ring_size; | |
| 3738 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index); | |
| 3739 } | |
| 3740 | |
| 3741 if (nwanted < nkeys) | |
| 3742 { | |
| 3743 start += nkeys - nwanted; | |
| 3744 if (start >= recent_keys_ring_size) | |
| 3745 start -= recent_keys_ring_size; | |
| 3746 nkeys = nwanted; | |
| 3747 } | |
| 3748 else | |
| 3749 nwanted = nkeys; | |
| 3750 | |
| 3751 val = make_vector (nwanted, Qnil); | |
| 3752 | |
| 3753 for (i = 0, j = start; i < nkeys; i++) | |
| 3754 { | |
| 3755 Lisp_Object e = XVECTOR_DATA (Vrecent_keys_ring)[j]; | |
| 3756 | |
|
5050
6f2158fa75ed
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Ben Wing <ben@xemacs.org>
parents:
4976
diff
changeset
|
3757 assert (!NILP (e)); |
| 428 | 3758 XVECTOR_DATA (val)[i] = Fcopy_event (e, Qnil); |
| 3759 if (++j >= recent_keys_ring_size) | |
| 3760 j = 0; | |
| 3761 } | |
| 3762 UNGCPRO; | |
| 3763 return val; | |
| 3764 } | |
| 3765 | |
| 3766 | |
| 3767 DEFUN ("recent-keys-ring-size", Frecent_keys_ring_size, 0, 0, 0, /* | |
| 3768 The maximum number of events `recent-keys' can return. | |
| 3769 */ | |
| 3770 ()) | |
| 3771 { | |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3772 return make_fixnum (recent_keys_ring_size); |
| 428 | 3773 } |
| 3774 | |
| 3775 DEFUN ("set-recent-keys-ring-size", Fset_recent_keys_ring_size, 1, 1, 0, /* | |
| 3776 Set the maximum number of events to be stored internally. | |
| 3777 */ | |
| 3778 (size)) | |
| 3779 { | |
| 3780 Lisp_Object new_vector = Qnil; | |
| 3781 int i, j, nkeys, start, min; | |
| 3782 struct gcpro gcpro1; | |
| 3783 | |
|
5581
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3784 CHECK_FIXNUM (size); |
|
56144c8593a8
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3785 if (XFIXNUM (size) <= 0) |
| 563 | 3786 invalid_argument ("Recent keys ring size must be positive", size); |
|
5581
56144c8593a8
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3787 if (XFIXNUM (size) == recent_keys_ring_size) |
| 428 | 3788 return size; |
| 3789 | |
| 446 | 3790 GCPRO1 (new_vector); |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3791 new_vector = make_vector (XFIXNUM (size), Qnil); |
| 428 | 3792 |
| 3793 if (NILP (Vrecent_keys_ring)) | |
| 3794 { | |
| 3795 Vrecent_keys_ring = new_vector; | |
| 446 | 3796 RETURN_UNGCPRO (size); |
| 428 | 3797 } |
| 3798 | |
| 3799 if (NILP (XVECTOR_DATA (Vrecent_keys_ring)[recent_keys_ring_index])) | |
| 3800 /* This means the vector has not yet wrapped */ | |
| 3801 { | |
| 3802 nkeys = recent_keys_ring_index; | |
| 3803 start = 0; | |
| 3804 } | |
| 3805 else | |
| 3806 { | |
| 3807 nkeys = recent_keys_ring_size; | |
| 3808 start = ((recent_keys_ring_index == nkeys) ? 0 : recent_keys_ring_index); | |
| 3809 } | |
| 3810 | |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3811 if (XFIXNUM (size) > nkeys) |
| 428 | 3812 min = nkeys; |
| 3813 else | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3814 min = XFIXNUM (size); |
| 428 | 3815 |
| 3816 for (i = 0, j = start; i < min; i++) | |
| 3817 { | |
| 3818 XVECTOR_DATA (new_vector)[i] = XVECTOR_DATA (Vrecent_keys_ring)[j]; | |
| 3819 if (++j >= recent_keys_ring_size) | |
| 3820 j = 0; | |
| 3821 } | |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
3822 recent_keys_ring_size = XFIXNUM (size); |
| 428 | 3823 recent_keys_ring_index = (i < recent_keys_ring_size) ? i : 0; |
| 3824 | |
| 3825 Vrecent_keys_ring = new_vector; | |
| 3826 | |
| 3827 UNGCPRO; | |
| 3828 return size; | |
| 3829 } | |
| 3830 | |
| 3831 /* Vthis_command_keys having value Qnil means that the next time | |
| 3832 push_this_command_keys is called, it should start over. | |
| 3833 The times at which the command-keys are reset | |
| 3834 (instead of merely being augmented) are pretty counterintuitive. | |
| 3835 (More specifically: | |
| 3836 | |
| 3837 -- We do not reset this-command-keys when we finish reading a | |
| 3838 command. This is because some commands (e.g. C-u) act | |
| 3839 like command prefixes; they signal this by setting prefix-arg | |
| 3840 to non-nil. | |
| 3841 -- Therefore, we reset this-command-keys when we finish | |
| 3842 executing a command, unless prefix-arg is set. | |
| 3843 -- However, if we ever do a non-local exit out of a command | |
| 3844 loop (e.g. an error in a command), we need to reset | |
| 3845 this-command-keys. We do this by calling reset_this_command_keys() | |
| 3846 from cmdloop.c, whenever an error causes an invocation of the | |
| 3847 default error handler, and whenever there's a throw to top-level.) | |
| 3848 */ | |
| 3849 | |
| 3850 void | |
| 3851 reset_this_command_keys (Lisp_Object console, int clear_echo_area_p) | |
| 3852 { | |
| 757 | 3853 if (!NILP (console)) |
| 3854 { | |
| 3855 /* console is nil if we just deleted the console as a result of C-x 5 | |
| 3856 0. Unfortunately things are currently in a messy situation where | |
| 3857 some stuff is console-local and other stuff isn't, so we need to | |
| 3858 do everything that's not console-local. */ | |
| 3859 struct command_builder *command_builder = | |
| 3860 XCOMMAND_BUILDER (XCONSOLE (console)->command_builder); | |
| 3861 | |
| 3862 reset_key_echo (command_builder, clear_echo_area_p); | |
| 3863 reset_current_events (command_builder); | |
| 3864 } | |
| 3865 else | |
| 3866 reset_key_echo (0, clear_echo_area_p); | |
| 428 | 3867 |
| 3868 deallocate_event_chain (Vthis_command_keys); | |
| 3869 Vthis_command_keys = Qnil; | |
| 3870 Vthis_command_keys_tail = Qnil; | |
| 3871 } | |
| 3872 | |
| 3873 static void | |
| 3874 push_this_command_keys (Lisp_Object event) | |
| 3875 { | |
| 3025 | 3876 Lisp_Object new_ = Fmake_event (Qnil, Qnil); |
| 3877 | |
| 3878 Fcopy_event (event, new_); | |
| 3879 enqueue_event (new_, &Vthis_command_keys, &Vthis_command_keys_tail); | |
| 428 | 3880 } |
| 3881 | |
| 3882 /* The following two functions are used in call-interactively, | |
| 3883 for the @ and e specifications. We used to just use | |
| 3884 `current-mouse-event' (i.e. the last mouse event in this-command-keys), | |
| 3885 but FSF does it more generally so we follow their lead. */ | |
| 3886 | |
| 3887 Lisp_Object | |
| 3888 extract_this_command_keys_nth_mouse_event (int n) | |
| 3889 { | |
| 3890 Lisp_Object event; | |
| 3891 | |
| 3892 EVENT_CHAIN_LOOP (event, Vthis_command_keys) | |
| 3893 { | |
| 3894 if (EVENTP (event) | |
| 3895 && (XEVENT_TYPE (event) == button_press_event | |
| 3896 || XEVENT_TYPE (event) == button_release_event | |
| 3897 || XEVENT_TYPE (event) == misc_user_event)) | |
| 3898 { | |
| 3899 if (!n) | |
| 3900 { | |
| 2500 | 3901 /* must copy to avoid an ABORT() in next_event_internal() */ |
| 428 | 3902 if (!NILP (XEVENT_NEXT (event))) |
| 3903 return Fcopy_event (event, Qnil); | |
| 3904 else | |
| 3905 return event; | |
| 3906 } | |
| 3907 n--; | |
| 3908 } | |
| 3909 } | |
| 3910 | |
| 3911 return Qnil; | |
| 3912 } | |
| 3913 | |
| 3914 Lisp_Object | |
| 3915 extract_vector_nth_mouse_event (Lisp_Object vector, int n) | |
| 3916 { | |
| 3917 int i; | |
| 3918 int len = XVECTOR_LENGTH (vector); | |
| 3919 | |
| 3920 for (i = 0; i < len; i++) | |
| 3921 { | |
| 3922 Lisp_Object event = XVECTOR_DATA (vector)[i]; | |
| 3923 if (EVENTP (event)) | |
| 3924 switch (XEVENT_TYPE (event)) | |
| 3925 { | |
| 3926 case button_press_event : | |
| 3927 case button_release_event : | |
| 3928 case misc_user_event : | |
| 3929 if (n == 0) | |
| 3930 return event; | |
| 3931 n--; | |
| 3932 break; | |
| 3933 default: | |
| 3934 continue; | |
| 3935 } | |
| 3936 } | |
| 3937 | |
| 3938 return Qnil; | |
| 3939 } | |
| 3940 | |
| 3941 static void | |
| 3942 push_recent_keys (Lisp_Object event) | |
| 3943 { | |
| 3944 Lisp_Object e; | |
| 3945 | |
| 3946 if (NILP (Vrecent_keys_ring)) | |
| 3947 Vrecent_keys_ring = make_vector (recent_keys_ring_size, Qnil); | |
| 3948 | |
| 3949 e = XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index]; | |
| 3950 | |
| 3951 if (NILP (e)) | |
| 3952 { | |
| 3953 e = Fmake_event (Qnil, Qnil); | |
| 3954 XVECTOR_DATA (Vrecent_keys_ring) [recent_keys_ring_index] = e; | |
| 3955 } | |
| 3956 Fcopy_event (event, e); | |
| 3957 if (++recent_keys_ring_index == recent_keys_ring_size) | |
| 3958 recent_keys_ring_index = 0; | |
| 3959 } | |
| 3960 | |
| 3961 | |
| 3962 static Lisp_Object | |
| 3963 current_events_into_vector (struct command_builder *command_builder) | |
| 3964 { | |
| 3965 Lisp_Object vector; | |
| 3966 Lisp_Object event; | |
| 3967 int n = event_chain_count (command_builder->current_events); | |
| 3968 | |
| 3969 /* Copy the vector and the events in it. */ | |
| 3970 /* No need to copy the events, since they're already copies, and | |
| 3971 nobody other than the command-builder has pointers to them */ | |
| 3972 vector = make_vector (n, Qnil); | |
| 3973 n = 0; | |
| 3974 EVENT_CHAIN_LOOP (event, command_builder->current_events) | |
| 3975 XVECTOR_DATA (vector)[n++] = event; | |
| 3976 reset_command_builder_event_chain (command_builder); | |
| 3977 return vector; | |
| 3978 } | |
| 3979 | |
| 3980 | |
| 3981 /* | |
| 3982 Given the current state of the command builder and a new command event | |
| 3983 that has just been dispatched: | |
| 3984 | |
| 3985 -- add the event to the event chain forming the current command | |
| 3986 (doing meta-translation as necessary) | |
| 3987 -- return the binding of this event chain; this will be one of: | |
| 3988 -- nil (there is no binding) | |
| 3989 -- a keymap (part of a command has been specified) | |
| 3990 -- a command (anything that satisfies `commandp'; this includes | |
| 3991 some symbols, lists, subrs, strings, vectors, and | |
| 3992 compiled-function objects) | |
| 3993 */ | |
| 3994 static Lisp_Object | |
| 3995 lookup_command_event (struct command_builder *command_builder, | |
| 3996 Lisp_Object event, int allow_misc_user_events_p) | |
| 3997 { | |
| 3998 /* This function can GC */ | |
| 3999 struct frame *f = selected_frame (); | |
| 4000 /* Clear output from previous command execution */ | |
| 4001 if (!EQ (Qcommand, echo_area_status (f)) | |
| 4002 /* but don't let mouse-up clear what mouse-down just printed */ | |
| 4003 && (XEVENT (event)->event_type != button_release_event)) | |
| 4004 clear_echo_area (f, Qnil, 0); | |
| 4005 | |
| 4006 /* Add the given event to the command builder. | |
| 4007 Extra hack: this also updates the recent_keys_ring and Vthis_command_keys | |
| 4008 vectors to translate "ESC x" to "M-x" (for any "x" of course). | |
| 4009 */ | |
| 4010 { | |
| 4011 Lisp_Object recent = command_builder->most_current_event; | |
| 4012 | |
| 4013 if (EVENTP (recent) | |
| 1204 | 4014 && event_matches_key_specifier_p (recent, Vmeta_prefix_char)) |
| 428 | 4015 { |
| 440 | 4016 Lisp_Event *e; |
| 428 | 4017 /* When we see a sequence like "ESC x", pretend we really saw "M-x". |
| 4018 DoubleThink the recent-keys and this-command-keys as well. */ | |
| 4019 | |
| 4020 /* Modify the previous most-recently-pushed event on the command | |
| 4021 builder to be a copy of this one with the meta-bit set instead of | |
| 4022 pushing a new event. | |
| 4023 */ | |
| 4024 Fcopy_event (event, recent); | |
| 4025 e = XEVENT (recent); | |
| 934 | 4026 if (EVENT_TYPE (e) == key_press_event) |
| 1204 | 4027 SET_EVENT_KEY_MODIFIERS (e, EVENT_KEY_MODIFIERS (e) | |
| 4028 XEMACS_MOD_META); | |
| 934 | 4029 else if (EVENT_TYPE (e) == button_press_event |
| 4030 || EVENT_TYPE (e) == button_release_event) | |
| 1204 | 4031 SET_EVENT_BUTTON_MODIFIERS (e, EVENT_BUTTON_MODIFIERS (e) | |
| 4032 XEMACS_MOD_META); | |
| 428 | 4033 else |
| 2500 | 4034 ABORT (); |
| 428 | 4035 |
| 4036 { | |
| 4037 int tckn = event_chain_count (Vthis_command_keys); | |
| 4038 if (tckn >= 2) | |
| 4039 /* ??? very strange if it's < 2. */ | |
| 4040 this_command_keys_replace_suffix | |
| 4041 (event_chain_nth (Vthis_command_keys, tckn - 2), | |
| 4042 Fcopy_event (recent, Qnil)); | |
| 4043 } | |
| 4044 | |
| 4045 regenerate_echo_keys_from_this_command_keys (command_builder); | |
| 4046 } | |
| 4047 else | |
| 771 | 4048 command_builder_append_event (command_builder, event); |
| 428 | 4049 } |
| 4050 | |
| 4051 { | |
| 771 | 4052 Lisp_Object leaf = |
| 4053 command_builder_find_leaf_and_update_global_state | |
| 4054 (command_builder, | |
| 4055 allow_misc_user_events_p); | |
| 428 | 4056 struct gcpro gcpro1; |
| 4057 GCPRO1 (leaf); | |
| 4058 | |
| 4059 if (KEYMAPP (leaf)) | |
| 4060 { | |
| 442 | 4061 #if defined (HAVE_X_WINDOWS) && defined (LWLIB_MENUBARS_LUCID) |
| 4062 if (!x_kludge_lw_menu_active ()) | |
| 4063 #else | |
| 4064 if (1) | |
| 4065 #endif | |
| 428 | 4066 { |
| 4067 Lisp_Object prompt = Fkeymap_prompt (leaf, Qt); | |
| 4068 if (STRINGP (prompt)) | |
| 4069 { | |
| 4070 /* Append keymap prompt to key echo buffer */ | |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4071 int buf_fill_pointer = command_builder->echo_buf_fill_pointer; |
| 428 | 4072 Bytecount len = XSTRING_LENGTH (prompt); |
| 4073 | |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4074 if (len + buf_fill_pointer + 1 |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4075 <= XSTRING_LENGTH (command_builder->echo_buf)) |
| 428 | 4076 { |
|
5803
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4077 memcpy (XSTRING_DATA (command_builder->echo_buf) |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4078 + buf_fill_pointer, |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4079 XSTRING_DATA (prompt), |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4080 len); |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4081 copy_string_extents (command_builder->echo_buf, prompt, |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4082 buf_fill_pointer, 0, len); |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4083 |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4084 init_string_ascii_begin (command_builder->echo_buf); |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4085 bump_string_modiff (command_builder->echo_buf); |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4086 sledgehammer_check_ascii_begin (command_builder->echo_buf); |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4087 |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4088 /* Show the keymap prompt, but don't adjust the fill |
|
b79e1e02bf01
Preserve extent information in the command builder code.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4089 pointer to reflect it. */ |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4090 command_builder->echo_buf_end |
|
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Aidan Kehoe <kehoea@parhasard.net>
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5801
diff
changeset
|
4091 = command_builder->echo_buf_fill_pointer + len; |
| 428 | 4092 } |
| 4093 maybe_echo_keys (command_builder, 1); | |
| 4094 } | |
| 4095 else | |
| 4096 maybe_echo_keys (command_builder, 0); | |
| 4097 } | |
| 853 | 4098 /* #### i don't trust this at all. --ben */ |
| 4099 #if 0 | |
| 442 | 4100 else if (!NILP (Vquit_flag)) |
| 4101 { | |
| 4102 /* if quit happened during menu acceleration, pretend we read it */ | |
| 4103 struct console *con = XCONSOLE (Fselected_console ()); | |
| 1204 | 4104 |
| 4105 enqueue_command_event (Fcopy_event (CONSOLE_QUIT_EVENT (con), | |
| 4106 Qnil)); | |
| 442 | 4107 Vquit_flag = Qnil; |
| 4108 } | |
| 853 | 4109 #endif |
| 428 | 4110 } |
| 4111 else if (!NILP (leaf)) | |
| 4112 { | |
| 4113 if (EQ (Qcommand, echo_area_status (f)) | |
|
5803
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4114 && command_builder->echo_buf_fill_pointer > 0) |
| 428 | 4115 { |
| 4116 /* If we had been echoing keys, echo the last one (without | |
| 4117 the trailing dash) and redisplay before executing the | |
| 4118 command. */ | |
|
5803
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4119 command_builder->echo_buf_end = |
|
b79e1e02bf01
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5801
diff
changeset
|
4120 command_builder->echo_buf_fill_pointer; |
| 428 | 4121 maybe_echo_keys (command_builder, 1); |
| 4122 Fsit_for (Qzero, Qt); | |
| 4123 } | |
| 4124 } | |
| 4125 RETURN_UNGCPRO (leaf); | |
| 4126 } | |
| 4127 } | |
| 4128 | |
| 479 | 4129 static int |
| 4932 | 4130 is_scrollbar_event (Lisp_Object USED_IF_SCROLLBARS (event)) |
| 479 | 4131 { |
| 516 | 4132 #ifdef HAVE_SCROLLBARS |
| 479 | 4133 Lisp_Object fun; |
| 4134 | |
| 934 | 4135 if (XEVENT_TYPE (event) != misc_user_event) |
| 4136 return 0; | |
| 1204 | 4137 fun = XEVENT_MISC_USER_FUNCTION (event); |
| 479 | 4138 |
| 4139 return (EQ (fun, Qscrollbar_line_up) || | |
| 4140 EQ (fun, Qscrollbar_line_down) || | |
| 4141 EQ (fun, Qscrollbar_page_up) || | |
| 4142 EQ (fun, Qscrollbar_page_down) || | |
| 4143 EQ (fun, Qscrollbar_to_top) || | |
| 4144 EQ (fun, Qscrollbar_to_bottom) || | |
| 4145 EQ (fun, Qscrollbar_vertical_drag) || | |
| 4146 EQ (fun, Qscrollbar_char_left) || | |
| 4147 EQ (fun, Qscrollbar_char_right) || | |
| 4148 EQ (fun, Qscrollbar_page_left) || | |
| 4149 EQ (fun, Qscrollbar_page_right) || | |
| 4150 EQ (fun, Qscrollbar_to_left) || | |
| 4151 EQ (fun, Qscrollbar_to_right) || | |
| 4152 EQ (fun, Qscrollbar_horizontal_drag)); | |
| 516 | 4153 #else |
| 4154 return 0; | |
| 4155 #endif /* HAVE_SCROLLBARS */ | |
| 479 | 4156 } |
| 4157 | |
| 428 | 4158 static void |
| 4159 execute_command_event (struct command_builder *command_builder, | |
| 4160 Lisp_Object event) | |
| 4161 { | |
| 4162 /* This function can GC */ | |
| 4163 struct console *con = XCONSOLE (command_builder->console); | |
| 4164 struct gcpro gcpro1; | |
| 4165 | |
| 4166 GCPRO1 (event); /* event may be freshly created */ | |
| 444 | 4167 |
| 479 | 4168 /* #### This call to is_scrollbar_event() isn't quite right, but |
| 4169 fixing properly it requires more work than can go into 21.4. | |
| 4170 (We really need to split out menu, scrollbar, dialog, and other | |
| 4171 types of events from misc-user, and put the remaining ones in a | |
| 4172 new `user-eval' type that behaves like an eval event but is a | |
| 4173 user event and thus has all of its semantics -- e.g. being | |
| 4174 delayed during `accept-process-output' and similar wait states.) | |
| 4175 | |
| 4176 The real issue here is that "user events" and "command events" | |
| 4177 are not the same thing, but are very much confused in | |
| 4178 event-stream.c. User events are, essentially, any event that | |
| 4179 should be delayed by accept-process-output, should terminate a | |
| 4180 sit-for, etc. -- basically, any event that needs to be processed | |
| 4181 synchronously with key and mouse events. Command events are | |
| 4182 those that participate in command building; scrollbar events | |
| 4183 clearly don't belong because they should be transparent in a | |
| 4184 sequence like C-x @ h <scrollbar-drag> x, which used to cause a | |
| 4185 crash before checks similar to the is_scrollbar_event() call were | |
| 4186 added. Do other events belong with scrollbar events? I'm not | |
| 4187 sure; we need to categorize all misc-user events and see what | |
| 4188 their semantics are. | |
| 4189 | |
| 4190 (You might ask, why do scrollbar events need to be user events? | |
| 4191 That's a good question. The answer seems to be that they can | |
| 4192 change point, and having this happen asynchronously would be a | |
| 4193 very bad idea. According to the "proper" functioning of | |
| 4194 scrollbars, this should not happen, but XEmacs does not allow | |
| 4195 point to go outside of the window.) | |
| 4196 | |
| 4197 Scrollbar events and similar non-command events should obviously | |
| 4198 not be recorded in this-command-keys, so we need to check for | |
| 4199 this in next-event. | |
| 4200 | |
| 4201 #### We call reset_current_events() twice in this function -- | |
| 4202 #### here, and later as a result of reset_this_command_keys(). | |
| 4203 #### This is almost certainly wrong; need to figure out what's | |
| 4204 #### correct. | |
| 4205 | |
| 4206 #### We need to figure out what's really correct w.r.t. scrollbar | |
| 4207 #### events. With these new fixes in, it actually works to do | |
| 4208 #### C-x <scrollbar-drag> 5 2, but the key echo gets messed up | |
| 4209 #### (starts over at 5). We really need to be special-casing | |
| 4210 #### scrollbar events at a lower level, and not really passing | |
| 4211 #### them through the command builder at all. (e.g. do scrollbar | |
| 4212 #### events belong in macros??? doubtful; probably only the | |
| 4213 #### point movement, if any, belongs, special-cased as a | |
| 4214 #### pseudo-issued M-x goto-char command). #### Need more work | |
| 4215 #### here. Do this when separating out scrollbar events. | |
| 4216 */ | |
| 4217 | |
| 4218 if (!is_scrollbar_event (event)) | |
| 444 | 4219 reset_current_events (command_builder); |
| 428 | 4220 |
| 4221 switch (XEVENT (event)->event_type) | |
| 4222 { | |
| 4223 case key_press_event: | |
| 4224 Vcurrent_mouse_event = Qnil; | |
| 4225 break; | |
| 4226 case button_press_event: | |
| 4227 case button_release_event: | |
| 4228 case misc_user_event: | |
| 4229 Vcurrent_mouse_event = Fcopy_event (event, Qnil); | |
| 4230 break; | |
| 4231 default: break; | |
| 4232 } | |
| 4233 | |
| 4234 /* Store the last-command-event. The semantics of this is that it | |
| 4235 is the last event most recently involved in command-lookup. */ | |
| 4236 if (!EVENTP (Vlast_command_event)) | |
| 4237 Vlast_command_event = Fmake_event (Qnil, Qnil); | |
| 4238 if (XEVENT (Vlast_command_event)->event_type == dead_event) | |
| 4239 { | |
| 4240 Vlast_command_event = Fmake_event (Qnil, Qnil); | |
| 563 | 4241 invalid_state ("Someone deallocated the last-command-event!", Qunbound); |
| 428 | 4242 } |
| 4243 | |
| 4244 if (! EQ (event, Vlast_command_event)) | |
| 4245 Fcopy_event (event, Vlast_command_event); | |
| 4246 | |
| 4247 /* Note that last-command-char will never have its high-bit set, in | |
| 4248 an effort to sidestep the ambiguity between M-x and oslash. */ | |
| 4249 Vlast_command_char = Fevent_to_character (Vlast_command_event, | |
| 2862 | 4250 Qnil, Qnil, Qnil); |
| 428 | 4251 |
| 4252 /* Actually call the command, with all sorts of hair to preserve or clear | |
| 4253 the echo-area and region as appropriate and call the pre- and post- | |
| 4254 command-hooks. */ | |
| 4255 { | |
| 4256 int old_kbd_macro = con->kbd_macro_end; | |
| 4257 struct window *w = XWINDOW (Fselected_window (Qnil)); | |
| 4258 | |
| 4259 /* We're executing a new command, so the old value is irrelevant. */ | |
| 4260 zmacs_region_stays = 0; | |
| 4261 | |
| 4262 /* If the previous command tried to force a specific window-start, | |
| 4263 reset the flag in case this command moves point far away from | |
| 4264 that position. Also, reset the window's buffer's change | |
| 4265 information so that we don't trigger an incremental update. */ | |
| 4266 if (w->force_start) | |
| 4267 { | |
| 4268 w->force_start = 0; | |
| 4269 buffer_reset_changes (XBUFFER (w->buffer)); | |
| 4270 } | |
| 4271 | |
| 4272 pre_command_hook (); | |
| 4273 | |
| 934 | 4274 if (XEVENT_TYPE (event) == misc_user_event) |
| 4275 { | |
| 1204 | 4276 call1 (XEVENT_MISC_USER_FUNCTION (event), |
| 4277 XEVENT_MISC_USER_OBJECT (event)); | |
| 934 | 4278 } |
| 428 | 4279 else |
| 4280 { | |
| 4281 Fcommand_execute (Vthis_command, Qnil, Qnil); | |
| 4282 } | |
| 4283 | |
| 4284 post_command_hook (); | |
| 4285 | |
| 757 | 4286 /* Console might have been deleted by command */ |
| 4287 if (CONSOLE_LIVE_P (con) && !NILP (con->prefix_arg)) | |
| 428 | 4288 { |
| 4289 /* Commands that set the prefix arg don't update last-command, don't | |
| 4290 reset the echoing state, and don't go into keyboard macros unless | |
| 444 | 4291 followed by another command. Also don't quit here. */ |
| 4292 int speccount = specpdl_depth (); | |
| 4293 specbind (Qinhibit_quit, Qt); | |
| 428 | 4294 maybe_echo_keys (command_builder, 0); |
| 771 | 4295 unbind_to (speccount); |
| 428 | 4296 |
| 4297 /* If we're recording a keyboard macro, and the last command | |
| 4298 executed set a prefix argument, then decrement the pointer to | |
| 4299 the "last character really in the macro" to be just before this | |
| 4300 command. This is so that the ^U in "^U ^X )" doesn't go onto | |
| 4301 the end of macro. */ | |
| 4302 if (!NILP (con->defining_kbd_macro)) | |
| 4303 con->kbd_macro_end = old_kbd_macro; | |
| 4304 } | |
| 4305 else | |
| 4306 { | |
| 4307 /* Start a new command next time */ | |
| 4308 Vlast_command = Vthis_command; | |
| 442 | 4309 Vlast_command_properties = Vthis_command_properties; |
| 4310 Vthis_command_properties = Qnil; | |
| 4311 | |
| 428 | 4312 /* Emacs 18 doesn't unconditionally clear the echoed keystrokes, |
| 4313 so we don't either */ | |
| 479 | 4314 |
| 4315 if (!is_scrollbar_event (event)) | |
| 771 | 4316 reset_this_command_keys (CONSOLE_LIVE_P (con) ? wrap_console (con) |
| 757 | 4317 : Qnil, 0); |
| 428 | 4318 } |
| 4319 } | |
| 4320 | |
| 4321 UNGCPRO; | |
| 4322 } | |
| 4323 | |
| 4324 /* Run the pre command hook. */ | |
| 4325 | |
| 4326 static void | |
| 4327 pre_command_hook (void) | |
| 4328 { | |
| 4329 last_point_position = BUF_PT (current_buffer); | |
| 793 | 4330 last_point_position_buffer = wrap_buffer (current_buffer); |
| 428 | 4331 /* This function can GC */ |
| 853 | 4332 safe_run_hook_trapping_problems |
| 1333 | 4333 (Qcommand, Qpre_command_hook, |
| 4334 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); | |
| 442 | 4335 |
| 4336 /* This is a kludge, but necessary; see simple.el */ | |
| 4337 call0 (Qhandle_pre_motion_command); | |
| 428 | 4338 } |
| 4339 | |
| 4340 /* Run the post command hook. */ | |
| 4341 | |
| 4342 static void | |
| 4343 post_command_hook (void) | |
| 4344 { | |
| 4345 /* This function can GC */ | |
| 4346 /* Turn off region highlighting unless this command requested that | |
| 4347 it be left on, or we're in the minibuffer. We don't turn it off | |
| 4348 when we're in the minibuffer so that things like M-x write-region | |
| 4349 still work! | |
| 4350 | |
| 4351 This could be done via a function on the post-command-hook, but | |
| 4352 we don't want the user to accidentally remove it. | |
| 4353 */ | |
| 4354 | |
| 4355 Lisp_Object win = Fselected_window (Qnil); | |
| 4356 | |
| 4357 /* If the last command deleted the frame, `win' might be nil. | |
| 4358 It seems safest to do nothing in this case. */ | |
| 442 | 4359 /* Note: Someone added the following comment and put #if 0's around |
| 4360 this code, not realizing that doing this invites a crash in the | |
| 4361 line after. */ | |
| 440 | 4362 /* #### This doesn't really fix the problem, |
| 428 | 4363 if delete-frame is called by some hook */ |
| 4364 if (NILP (win)) | |
| 4365 return; | |
| 442 | 4366 |
| 4367 /* This is a kludge, but necessary; see simple.el */ | |
| 4368 call0 (Qhandle_post_motion_command); | |
| 428 | 4369 |
| 4370 if (! zmacs_region_stays | |
| 4371 && (!MINI_WINDOW_P (XWINDOW (win)) | |
| 4372 || EQ (zmacs_region_buffer (), WINDOW_BUFFER (XWINDOW (win))))) | |
| 4373 zmacs_deactivate_region (); | |
| 4374 else | |
| 4375 zmacs_update_region (); | |
| 4376 | |
| 853 | 4377 safe_run_hook_trapping_problems |
| 1333 | 4378 (Qcommand, Qpost_command_hook, |
|
5722
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Mike Sperber <sperber@deinprogramm.de>
parents:
5691
diff
changeset
|
4379 NO_INHIBIT_THROWS); |
| 853 | 4380 |
| 4381 #if 0 /* FSF Emacs */ | |
| 4382 if (!NILP (current_buffer->mark_active)) | |
| 4383 { | |
| 4384 if (!NILP (Vdeactivate_mark) && !NILP (Vtransient_mark_mode)) | |
| 4385 { | |
| 4386 current_buffer->mark_active = Qnil; | |
| 4387 run_hook (intern ("deactivate-mark-hook")); | |
| 4388 } | |
| 4389 else if (current_buffer != prev_buffer || | |
| 4390 BUF_MODIFF (current_buffer) != prev_modiff) | |
| 4391 run_hook (intern ("activate-mark-hook")); | |
| 4392 } | |
| 4393 #endif /* FSF Emacs */ | |
| 428 | 4394 |
| 4395 /* #### Kludge!!! This is necessary to make sure that things | |
| 4396 are properly positioned even if post-command-hook moves point. | |
| 4397 #### There should be a cleaner way of handling this. */ | |
| 4398 call0 (Qauto_show_make_point_visible); | |
| 4399 } | |
| 4400 | |
| 4401 | |
| 4402 DEFUN ("dispatch-event", Fdispatch_event, 1, 1, 0, /* | |
| 444 | 4403 Given an event object EVENT as returned by `next-event', execute it. |
| 428 | 4404 |
| 4405 Key-press, button-press, and button-release events get accumulated | |
| 4406 until a complete key sequence (see `read-key-sequence') is reached, | |
| 4407 at which point the sequence is looked up in the current keymaps and | |
| 4408 acted upon. | |
| 4409 | |
| 4410 Mouse motion events cause the low-level handling function stored in | |
| 4411 `mouse-motion-handler' to be called. (There are very few circumstances | |
| 4412 under which you should change this handler. Use `mode-motion-hook' | |
| 4413 instead.) | |
| 4414 | |
| 4415 Menu, timeout, and eval events cause the associated function or handler | |
| 4416 to be called. | |
| 4417 | |
| 4418 Process events cause the subprocess's output to be read and acted upon | |
| 4419 appropriately (see `start-process'). | |
| 4420 | |
| 4421 Magic events are handled as necessary. | |
| 4422 */ | |
| 4423 (event)) | |
| 4424 { | |
| 4425 /* This function can GC */ | |
| 4426 struct command_builder *command_builder; | |
| 440 | 4427 Lisp_Event *ev; |
| 428 | 4428 Lisp_Object console; |
| 4429 Lisp_Object channel; | |
| 1292 | 4430 PROFILE_DECLARE (); |
| 428 | 4431 |
| 4432 CHECK_LIVE_EVENT (event); | |
| 4433 ev = XEVENT (event); | |
| 4434 | |
| 4435 /* events on dead channels get silently eaten */ | |
| 4436 channel = EVENT_CHANNEL (ev); | |
| 4437 if (object_dead_p (channel)) | |
| 4438 return Qnil; | |
| 4439 | |
| 1292 | 4440 PROFILE_RECORD_ENTERING_SECTION (Qdispatch_event); |
| 4441 | |
| 428 | 4442 /* Some events don't have channels (e.g. eval events). */ |
| 4443 console = CDFW_CONSOLE (channel); | |
| 4444 if (NILP (console)) | |
| 4445 console = Vselected_console; | |
| 4446 else if (!EQ (console, Vselected_console)) | |
| 4447 Fselect_console (console); | |
| 4448 | |
| 4449 command_builder = XCOMMAND_BUILDER (XCONSOLE (console)->command_builder); | |
| 934 | 4450 switch (XEVENT_TYPE (event)) |
| 428 | 4451 { |
| 4452 case button_press_event: | |
| 4453 case button_release_event: | |
| 4454 case key_press_event: | |
| 4455 { | |
| 4456 Lisp_Object leaf = lookup_command_event (command_builder, event, 1); | |
| 4457 | |
|
5371
6f10ac29bf40
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4458 lookedup: |
| 428 | 4459 if (KEYMAPP (leaf)) |
| 4460 /* Incomplete key sequence */ | |
| 4461 break; | |
| 4462 if (NILP (leaf)) | |
| 4463 { | |
| 4464 /* At this point, we know that the sequence is not bound to a | |
| 4465 command. Normally, we beep and print a message informing the | |
| 4466 user of this. But we do not beep or print a message when: | |
| 4467 | |
| 4468 o the last event in this sequence is a mouse-up event; or | |
| 4469 o the last event in this sequence is a mouse-down event and | |
| 4470 there is a binding for the mouse-up version. | |
| 4471 | |
| 4472 That is, if the sequence ``C-x button1'' is typed, and is not | |
| 4473 bound to a command, but the sequence ``C-x button1up'' is bound | |
| 4474 to a command, we do not complain about the ``C-x button1'' | |
| 4475 sequence. If neither ``C-x button1'' nor ``C-x button1up'' is | |
| 4476 bound to a command, then we complain about the ``C-x button1'' | |
| 4477 sequence, but later will *not* complain about the | |
| 4478 ``C-x button1up'' sequence, which would be redundant. | |
| 4479 | |
| 4480 This is pretty hairy, but I think it's the most intuitive | |
| 4481 behavior. | |
| 4482 */ | |
| 4483 Lisp_Object terminal = command_builder->most_current_event; | |
| 4484 | |
| 4485 if (XEVENT_TYPE (terminal) == button_press_event) | |
| 4486 { | |
| 4487 int no_bitching; | |
| 4488 /* Temporarily pretend the last event was an "up" instead of a | |
| 4489 "down", and look up its binding. */ | |
| 4490 XEVENT_TYPE (terminal) = button_release_event; | |
| 4491 /* If the "up" version is bound, don't complain. */ | |
| 4492 no_bitching | |
| 771 | 4493 = !NILP (command_builder_find_leaf_and_update_global_state |
| 4494 (command_builder, 0)); | |
| 428 | 4495 /* Undo the temporary changes we just made. */ |
| 4496 XEVENT_TYPE (terminal) = button_press_event; | |
| 4497 if (no_bitching) | |
| 4498 { | |
| 4499 /* Pretend this press was not seen (treat as a prefix) */ | |
| 4500 if (EQ (command_builder->current_events, terminal)) | |
| 4501 { | |
| 4502 reset_current_events (command_builder); | |
| 4503 } | |
| 4504 else | |
| 4505 { | |
| 4506 Lisp_Object eve; | |
| 4507 | |
| 4508 EVENT_CHAIN_LOOP (eve, command_builder->current_events) | |
| 4509 if (EQ (XEVENT_NEXT (eve), terminal)) | |
| 4510 break; | |
| 4511 | |
| 4512 Fdeallocate_event (command_builder-> | |
| 4513 most_current_event); | |
| 4514 XSET_EVENT_NEXT (eve, Qnil); | |
| 4515 command_builder->most_current_event = eve; | |
| 4516 } | |
| 4517 maybe_echo_keys (command_builder, 1); | |
| 4518 break; | |
| 4519 } | |
| 4520 } | |
| 4521 | |
| 4522 /* Complain that the typed sequence is not defined, if this is the | |
| 4523 kind of sequence that warrants a complaint. */ | |
| 4524 XCONSOLE (console)->defining_kbd_macro = Qnil; | |
| 4525 XCONSOLE (console)->prefix_arg = Qnil; | |
| 4526 /* Don't complain about undefined button-release events */ | |
| 4527 if (XEVENT_TYPE (terminal) != button_release_event) | |
| 4528 { | |
| 4529 Lisp_Object keys = current_events_into_vector (command_builder); | |
| 4530 struct gcpro gcpro1; | |
| 4531 | |
| 4532 /* Run the pre-command-hook before barfing about an undefined | |
| 4533 key. */ | |
| 4534 Vthis_command = Qnil; | |
| 4535 GCPRO1 (keys); | |
| 4536 pre_command_hook (); | |
| 4537 UNGCPRO; | |
|
5371
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4538 |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4539 if (!NILP (Vthis_command)) |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4540 { |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4541 /* Allow pre-command-hook to change the command to |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4542 something more useful, and avoid barfing. */ |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4543 leaf = Vthis_command; |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4544 if (!EQ (command_builder->most_current_event, |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4545 Vlast_command_event)) |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4546 { |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4547 reset_current_events (command_builder); |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4548 command_builder_append_event (command_builder, |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4549 Vlast_command_event); |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4550 } |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4551 goto lookedup; |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4552 } |
|
6f10ac29bf40
Be better about searching for chars typed via XIM and x-compose.el, isearch
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4553 |
| 428 | 4554 /* The post-command-hook doesn't run. */ |
| 4555 Fsignal (Qundefined_keystroke_sequence, list1 (keys)); | |
| 4556 } | |
| 4557 /* Reset the command builder for reading the next sequence. */ | |
| 4558 reset_this_command_keys (console, 1); | |
| 4559 } | |
| 4560 else /* key sequence is bound to a command */ | |
| 4561 { | |
| 430 | 4562 int magic_undo = 0; |
|
5307
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
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5191
diff
changeset
|
4563 Elemcount magic_undo_count = 20; |
| 430 | 4564 |
|
5691
b490ddbd42aa
Back out 7371081ce8f7, I have a better approach.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5689
diff
changeset
|
4565 Vthis_command = leaf; |
|
b490ddbd42aa
Back out 7371081ce8f7, I have a better approach.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5689
diff
changeset
|
4566 |
| 428 | 4567 /* Don't push an undo boundary if the command set the prefix arg, |
| 4568 or if we are executing a keyboard macro, or if in the | |
| 4569 minibuffer. If the command we are about to execute is | |
| 4570 self-insert, it's tricky: up to 20 consecutive self-inserts may | |
| 4571 be done without an undo boundary. This counter is reset as | |
| 4572 soon as a command other than self-insert-command is executed. | |
| 430 | 4573 |
| 442 | 4574 Programmers can also use the `self-insert-defer-undo' |
| 4575 property to install that behavior on functions other | |
| 430 | 4576 than `self-insert-command', or to change the magic |
| 442 | 4577 number 20 to something else. #### DOCUMENT THIS! */ |
| 430 | 4578 |
| 4579 if (SYMBOLP (leaf)) | |
| 4580 { | |
| 4581 Lisp_Object prop = Fget (leaf, Qself_insert_defer_undo, Qnil); | |
| 4582 if (NATNUMP (prop)) | |
|
5307
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
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5191
diff
changeset
|
4583 { |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4584 magic_undo = 1; |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4585 if (FIXNUMP (prop)) |
|
5307
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4586 { |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4587 magic_undo_count = XFIXNUM (prop); |
|
5307
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4588 } |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4589 #ifdef HAVE_BIGNUM |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4590 else if (BIGNUMP (prop) |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4591 && bignum_fits_emacs_int_p (XBIGNUM_DATA (prop))) |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4592 { |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4593 magic_undo_count |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4594 = bignum_to_emacs_int (XBIGNUM_DATA (prop)); |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4595 } |
|
c096d8051f89
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Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4596 #endif |
|
c096d8051f89
Have NATNUMP give t for positive bignums; check limits appropriately.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5191
diff
changeset
|
4597 } |
| 430 | 4598 else if (!NILP (prop)) |
| 4599 magic_undo = 1; | |
| 4600 else if (EQ (leaf, Qself_insert_command)) | |
| 4601 magic_undo = 1; | |
| 4602 } | |
| 4603 | |
| 4604 if (!magic_undo) | |
| 428 | 4605 command_builder->self_insert_countdown = 0; |
| 4606 if (NILP (XCONSOLE (console)->prefix_arg) | |
| 4607 && NILP (Vexecuting_macro) | |
| 4608 && command_builder->self_insert_countdown == 0) | |
| 4609 Fundo_boundary (); | |
| 4610 | |
| 430 | 4611 if (magic_undo) |
| 428 | 4612 { |
| 4613 if (--command_builder->self_insert_countdown < 0) | |
| 430 | 4614 command_builder->self_insert_countdown = magic_undo_count; |
| 428 | 4615 } |
| 4616 execute_command_event | |
| 4617 (command_builder, | |
| 444 | 4618 internal_equal (event, command_builder->most_current_event, 0) |
| 428 | 4619 ? event |
| 4620 /* Use the translated event that was most recently seen. | |
| 4621 This way, last-command-event becomes f1 instead of | |
| 4622 the P from ESC O P. But we must copy it, else we'll | |
| 4623 lose when the command-builder events are deallocated. */ | |
| 444 | 4624 : Fcopy_event (command_builder->most_current_event, Qnil)); |
| 428 | 4625 } |
| 4626 break; | |
| 4627 } | |
| 4628 case misc_user_event: | |
| 4629 { | |
| 4630 /* Jamie said: | |
| 4631 | |
| 4632 We could just always use the menu item entry, whatever it is, but | |
| 4633 this might break some Lisp code that expects `this-command' to | |
| 4634 always contain a symbol. So only store it if this is a simple | |
| 4635 `call-interactively' sort of menu item. | |
| 4636 | |
| 4637 But this is bogus. `this-command' could be a string or vector | |
| 4638 anyway (for keyboard macros). There's even one instance | |
| 4639 (in pending-del.el) of `this-command' getting set to a cons | |
| 4640 (a lambda expression). So in the `eval' case I'll just | |
| 4641 convert it into a lambda expression. | |
| 4642 */ | |
| 1204 | 4643 if (EQ (XEVENT_MISC_USER_FUNCTION (event), Qcall_interactively) |
| 4644 && SYMBOLP (XEVENT_MISC_USER_OBJECT (event))) | |
| 4645 Vthis_command = XEVENT_MISC_USER_OBJECT (event); | |
| 4646 else if (EQ (XEVENT_MISC_USER_FUNCTION (event), Qeval)) | |
| 934 | 4647 Vthis_command = |
| 1204 | 4648 Fcons (Qlambda, Fcons (Qnil, XEVENT_MISC_USER_OBJECT (event))); |
| 4649 else if (SYMBOLP (XEVENT_MISC_USER_FUNCTION (event))) | |
| 934 | 4650 /* A scrollbar command or the like. */ |
| 1204 | 4651 Vthis_command = XEVENT_MISC_USER_FUNCTION (event); |
| 428 | 4652 else |
| 4653 /* Huh? */ | |
| 4654 Vthis_command = Qnil; | |
| 4655 | |
| 4656 /* clear the echo area */ | |
| 4657 reset_key_echo (command_builder, 1); | |
| 4658 | |
| 4659 command_builder->self_insert_countdown = 0; | |
| 4660 if (NILP (XCONSOLE (console)->prefix_arg) | |
| 4661 && NILP (Vexecuting_macro) | |
| 4662 && !EQ (minibuf_window, Fselected_window (Qnil))) | |
| 4663 Fundo_boundary (); | |
| 4664 execute_command_event (command_builder, event); | |
| 4665 break; | |
| 4666 } | |
| 4667 default: | |
| 4668 execute_internal_event (event); | |
| 4669 break; | |
| 4670 } | |
| 1292 | 4671 |
| 4672 PROFILE_RECORD_EXITING_SECTION (Qdispatch_event); | |
| 428 | 4673 return Qnil; |
| 4674 } | |
| 4675 | |
| 4676 DEFUN ("read-key-sequence", Fread_key_sequence, 1, 3, 0, /* | |
| 4677 Read a sequence of keystrokes or mouse clicks. | |
| 4678 Returns a vector of the event objects read. The vector and the event | |
| 444 | 4679 objects it contains are freshly created (and so will not be side-effected |
| 428 | 4680 by subsequent calls to this function). |
| 4681 | |
| 4682 The sequence read is sufficient to specify a non-prefix command starting | |
| 4683 from the current local and global keymaps. A C-g typed while in this | |
| 4684 function is treated like any other character, and `quit-flag' is not set. | |
| 4685 | |
| 4686 First arg PROMPT is a prompt string. If nil, do not prompt specially. | |
| 444 | 4687 |
| 4688 Second optional arg CONTINUE-ECHO non-nil means this key echoes as a | |
| 4689 continuation of the previous key. | |
| 4690 | |
| 4691 Third optional arg DONT-DOWNCASE-LAST non-nil means do not convert the | |
| 4692 last event to lower case. (Normally any upper case event is converted | |
| 4693 to lower case if the original event is undefined and the lower case | |
| 4694 equivalent is defined.) This argument is provided mostly for FSF | |
| 4695 compatibility; the equivalent effect can be achieved more generally by | |
| 4696 binding `retry-undefined-key-binding-unshifted' to nil around the call | |
| 4697 to `read-key-sequence'. | |
| 428 | 4698 |
| 4699 If the user selects a menu item while we are prompting for a key-sequence, | |
| 4700 the returned value will be a vector of a single menu-selection event. | |
| 4701 An error will be signalled if you pass this value to `lookup-key' or a | |
| 4702 related function. | |
| 4703 | |
| 4704 `read-key-sequence' checks `function-key-map' for function key | |
| 444 | 4705 sequences, where they wouldn't conflict with ordinary bindings. |
| 4706 See `function-key-map' for more details. | |
| 428 | 4707 */ |
| 4708 (prompt, continue_echo, dont_downcase_last)) | |
| 4709 { | |
| 4710 /* This function can GC */ | |
| 4711 struct console *con = XCONSOLE (Vselected_console); /* #### correct? | |
| 4712 Probably not -- see | |
| 4713 comment in | |
| 4714 next-event */ | |
| 4715 struct command_builder *command_builder = | |
| 4716 XCOMMAND_BUILDER (con->command_builder); | |
| 4717 Lisp_Object result; | |
| 4718 Lisp_Object event = Fmake_event (Qnil, Qnil); | |
| 4719 int speccount = specpdl_depth (); | |
| 4720 struct gcpro gcpro1; | |
| 4721 GCPRO1 (event); | |
| 4722 | |
| 707 | 4723 record_unwind_protect (Fset_buffer, Fcurrent_buffer ()); |
| 428 | 4724 if (!NILP (prompt)) |
| 4725 CHECK_STRING (prompt); | |
| 4726 /* else prompt = Fkeymap_prompt (current_buffer->keymap); may GC */ | |
| 4727 QUIT; | |
| 4728 | |
| 4729 if (NILP (continue_echo)) | |
| 771 | 4730 reset_this_command_keys (wrap_console (con), 1); |
| 428 | 4731 |
| 4732 if (!NILP (dont_downcase_last)) | |
| 4733 specbind (Qretry_undefined_key_binding_unshifted, Qnil); | |
| 4734 | |
| 4735 for (;;) | |
| 4736 { | |
| 4737 Fnext_event (event, prompt); | |
| 4738 /* restore the selected-console damage */ | |
| 4739 con = event_console_or_selected (event); | |
| 4740 command_builder = XCOMMAND_BUILDER (con->command_builder); | |
| 4741 if (! command_event_p (event)) | |
| 4742 execute_internal_event (event); | |
| 4743 else | |
| 4744 { | |
| 934 | 4745 if (XEVENT_TYPE (event) == misc_user_event) |
| 428 | 4746 reset_current_events (command_builder); |
| 4747 result = lookup_command_event (command_builder, event, 1); | |
| 4748 if (!KEYMAPP (result)) | |
| 4749 { | |
| 4750 result = current_events_into_vector (command_builder); | |
| 4751 reset_key_echo (command_builder, 0); | |
| 4752 break; | |
| 4753 } | |
| 4754 prompt = Qnil; | |
| 4755 } | |
| 4756 } | |
| 4757 | |
| 4758 Fdeallocate_event (event); | |
| 771 | 4759 RETURN_UNGCPRO (unbind_to_1 (speccount, result)); |
| 428 | 4760 } |
| 4761 | |
| 4762 DEFUN ("this-command-keys", Fthis_command_keys, 0, 0, 0, /* | |
| 4763 Return a vector of the keyboard or mouse button events that were used | |
| 4764 to invoke this command. This copies the vector and the events; it is safe | |
| 4765 to keep and modify them. | |
| 4766 */ | |
| 4767 ()) | |
| 4768 { | |
| 4769 Lisp_Object event; | |
| 4770 Lisp_Object result; | |
| 4771 int len; | |
| 4772 | |
| 4773 if (NILP (Vthis_command_keys)) | |
| 4774 return make_vector (0, Qnil); | |
| 4775 | |
| 4776 len = event_chain_count (Vthis_command_keys); | |
| 4777 | |
| 4778 result = make_vector (len, Qnil); | |
| 4779 len = 0; | |
| 4780 EVENT_CHAIN_LOOP (event, Vthis_command_keys) | |
| 4781 XVECTOR_DATA (result)[len++] = Fcopy_event (event, Qnil); | |
| 4782 return result; | |
| 4783 } | |
| 4784 | |
| 4785 DEFUN ("reset-this-command-lengths", Freset_this_command_lengths, 0, 0, 0, /* | |
| 4786 Used for complicated reasons in `universal-argument-other-key'. | |
| 4787 | |
| 4788 `universal-argument-other-key' rereads the event just typed. | |
| 4789 It then gets translated through `function-key-map'. | |
| 4790 The translated event gets included in the echo area and in | |
| 4791 the value of `this-command-keys' in addition to the raw original event. | |
| 4792 That is not right. | |
| 4793 | |
| 4794 Calling this function directs the translated event to replace | |
| 4795 the original event, so that only one version of the event actually | |
| 430 | 4796 appears in the echo area and in the value of `this-command-keys'. |
| 428 | 4797 */ |
| 4798 ()) | |
| 4799 { | |
| 4800 /* #### I don't understand this at all, so currently it does nothing. | |
| 4801 If there is ever a problem, maybe someone should investigate. */ | |
| 4802 return Qnil; | |
| 4803 } | |
| 4804 | |
| 4805 | |
| 4806 static void | |
| 4807 dribble_out_event (Lisp_Object event) | |
| 4808 { | |
| 4809 if (NILP (Vdribble_file)) | |
| 4810 return; | |
| 4811 | |
| 934 | 4812 if (XEVENT_TYPE (event) == key_press_event && |
| 1204 | 4813 !XEVENT_KEY_MODIFIERS (event)) |
| 934 | 4814 { |
| 1204 | 4815 Lisp_Object keysym = XEVENT_KEY_KEYSYM (event); |
| 4816 if (CHARP (XEVENT_KEY_KEYSYM (event))) | |
| 428 | 4817 { |
| 867 | 4818 Ichar ch = XCHAR (keysym); |
| 4819 Ibyte str[MAX_ICHAR_LEN]; | |
| 4820 Bytecount len = set_itext_ichar (str, ch); | |
| 428 | 4821 Lstream_write (XLSTREAM (Vdribble_file), str, len); |
| 4822 } | |
| 826 | 4823 else if (string_char_length (XSYMBOL (keysym)->name) == 1) |
| 428 | 4824 /* one-char key events are printed with just the key name */ |
| 4825 Fprinc (keysym, Vdribble_file); | |
| 4826 else if (EQ (keysym, Qreturn)) | |
| 4827 Lstream_putc (XLSTREAM (Vdribble_file), '\n'); | |
| 4828 else if (EQ (keysym, Qspace)) | |
| 4829 Lstream_putc (XLSTREAM (Vdribble_file), ' '); | |
| 4830 else | |
| 4831 Fprinc (event, Vdribble_file); | |
| 4832 } | |
| 4833 else | |
| 4834 Fprinc (event, Vdribble_file); | |
| 4835 Lstream_flush (XLSTREAM (Vdribble_file)); | |
| 4836 } | |
| 4837 | |
| 4838 DEFUN ("open-dribble-file", Fopen_dribble_file, 1, 1, | |
| 4839 "FOpen dribble file: ", /* | |
| 444 | 4840 Start writing all keyboard characters to a dribble file called FILENAME. |
| 4841 If FILENAME is nil, close any open dribble file. | |
| 428 | 4842 */ |
| 444 | 4843 (filename)) |
| 428 | 4844 { |
| 4845 /* This function can GC */ | |
| 4846 /* XEmacs change: always close existing dribble file. */ | |
| 4847 /* FSFmacs uses FILE *'s here. With lstreams, that's unnecessary. */ | |
| 4848 if (!NILP (Vdribble_file)) | |
| 4849 { | |
| 4850 Lstream_close (XLSTREAM (Vdribble_file)); | |
| 4851 Vdribble_file = Qnil; | |
| 4852 } | |
| 444 | 4853 if (!NILP (filename)) |
| 428 | 4854 { |
| 4855 int fd; | |
| 4856 | |
| 444 | 4857 filename = Fexpand_file_name (filename, Qnil); |
| 771 | 4858 fd = qxe_open (XSTRING_DATA (filename), |
| 4859 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY, | |
| 4860 CREAT_MODE); | |
| 428 | 4861 if (fd < 0) |
| 563 | 4862 report_file_error ("Unable to create dribble file", filename); |
| 428 | 4863 Vdribble_file = make_filedesc_output_stream (fd, 0, 0, LSTR_CLOSING); |
| 4864 #ifdef MULE | |
| 4865 Vdribble_file = | |
| 771 | 4866 make_coding_output_stream |
| 4867 (XLSTREAM (Vdribble_file), | |
| 800 | 4868 Qescape_quoted, CODING_ENCODE, 0); |
| 428 | 4869 #endif |
| 4870 } | |
| 4871 return Qnil; | |
| 4872 } | |
| 4873 | |
| 4874 | |
| 442 | 4875 |
| 4876 DEFUN ("current-event-timestamp", Fcurrent_event_timestamp, 0, 1, 0, /* | |
| 4877 Return the current event timestamp of the window system associated with CONSOLE. | |
| 4878 CONSOLE defaults to the selected console if omitted. | |
| 4879 */ | |
| 4880 (console)) | |
| 4881 { | |
| 4882 struct console *c = decode_console (console); | |
| 4883 int tiempo = event_stream_current_event_timestamp (c); | |
| 4884 | |
| 4885 /* This junk is so that timestamps don't get to be negative, but contain | |
| 4886 as many bits as this particular emacs will allow. | |
| 4887 */ | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4888 return make_fixnum (MOST_POSITIVE_FIXNUM & tiempo); |
| 442 | 4889 } |
| 4890 | |
| 4891 | |
| 428 | 4892 /************************************************************************/ |
| 4893 /* initialization */ | |
| 4894 /************************************************************************/ | |
| 4895 | |
| 4896 void | |
| 4897 syms_of_event_stream (void) | |
| 4898 { | |
|
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4899 INIT_LISP_OBJECT (command_builder); |
|
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|
4900 INIT_LISP_OBJECT (timeout); |
| 442 | 4901 |
| 563 | 4902 DEFSYMBOL (Qdisabled); |
| 4903 DEFSYMBOL (Qcommand_event_p); | |
| 4904 | |
| 4905 DEFERROR_STANDARD (Qundefined_keystroke_sequence, Qsyntax_error); | |
| 4906 DEFERROR_STANDARD (Qinvalid_key_binding, Qinvalid_state); | |
| 428 | 4907 |
| 4908 DEFSUBR (Frecent_keys); | |
| 4909 DEFSUBR (Frecent_keys_ring_size); | |
| 4910 DEFSUBR (Fset_recent_keys_ring_size); | |
| 4911 DEFSUBR (Finput_pending_p); | |
| 4912 DEFSUBR (Fenqueue_eval_event); | |
| 4913 DEFSUBR (Fnext_event); | |
| 4914 DEFSUBR (Fnext_command_event); | |
| 4915 DEFSUBR (Fdiscard_input); | |
| 4916 DEFSUBR (Fsit_for); | |
| 4917 DEFSUBR (Fsleep_for); | |
| 4918 DEFSUBR (Faccept_process_output); | |
| 4919 DEFSUBR (Fadd_timeout); | |
| 4920 DEFSUBR (Fdisable_timeout); | |
| 4921 DEFSUBR (Fadd_async_timeout); | |
| 4922 DEFSUBR (Fdisable_async_timeout); | |
| 4923 DEFSUBR (Fdispatch_event); | |
| 442 | 4924 DEFSUBR (Fdispatch_non_command_events); |
| 428 | 4925 DEFSUBR (Fread_key_sequence); |
| 4926 DEFSUBR (Fthis_command_keys); | |
| 4927 DEFSUBR (Freset_this_command_lengths); | |
| 4928 DEFSUBR (Fopen_dribble_file); | |
| 442 | 4929 DEFSUBR (Fcurrent_event_timestamp); |
| 428 | 4930 |
| 563 | 4931 DEFSYMBOL (Qpre_command_hook); |
| 4932 DEFSYMBOL (Qpost_command_hook); | |
| 4933 DEFSYMBOL (Qunread_command_events); | |
| 4934 DEFSYMBOL (Qunread_command_event); | |
| 4935 DEFSYMBOL (Qpre_idle_hook); | |
| 4936 DEFSYMBOL (Qhandle_pre_motion_command); | |
| 4937 DEFSYMBOL (Qhandle_post_motion_command); | |
| 4938 DEFSYMBOL (Qretry_undefined_key_binding_unshifted); | |
| 4939 DEFSYMBOL (Qauto_show_make_point_visible); | |
| 4940 | |
| 4941 DEFSYMBOL (Qself_insert_defer_undo); | |
| 4942 DEFSYMBOL (Qcancel_mode_internal); | |
| 1292 | 4943 |
| 4944 DEFSYMBOL (Qnext_event); | |
| 4945 DEFSYMBOL (Qdispatch_event); | |
|
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|
4946 |
|
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|
4947 DEFSYMBOL (Qsans_modifiers); |
| 428 | 4948 } |
| 4949 | |
| 4950 void | |
| 4951 reinit_vars_of_event_stream (void) | |
| 4952 { | |
| 4953 recent_keys_ring_index = 0; | |
| 4954 recent_keys_ring_size = 100; | |
| 4955 num_input_chars = 0; | |
| 4956 the_low_level_timeout_blocktype = | |
| 4957 Blocktype_new (struct low_level_timeout_blocktype); | |
| 4958 something_happened = 0; | |
| 1268 | 4959 recursive_sit_for = 0; |
| 4960 in_modal_loop = 0; | |
| 428 | 4961 } |
| 4962 | |
| 4963 void | |
| 4964 vars_of_event_stream (void) | |
| 4965 { | |
| 4966 Vrecent_keys_ring = Qnil; | |
| 4967 staticpro (&Vrecent_keys_ring); | |
| 4968 | |
| 4969 Vthis_command_keys = Qnil; | |
| 4970 staticpro (&Vthis_command_keys); | |
| 4971 Vthis_command_keys_tail = Qnil; | |
| 1204 | 4972 dump_add_root_lisp_object (&Vthis_command_keys_tail); |
| 428 | 4973 |
| 4974 command_event_queue = Qnil; | |
| 4975 staticpro (&command_event_queue); | |
| 4976 command_event_queue_tail = Qnil; | |
| 1204 | 4977 dump_add_root_lisp_object (&command_event_queue_tail); |
| 4978 | |
| 4979 dispatch_event_queue = Qnil; | |
| 4980 staticpro (&dispatch_event_queue); | |
| 4981 dispatch_event_queue_tail = Qnil; | |
| 4982 dump_add_root_lisp_object (&dispatch_event_queue_tail); | |
| 428 | 4983 |
| 4984 Vlast_selected_frame = Qnil; | |
| 4985 staticpro (&Vlast_selected_frame); | |
| 4986 | |
| 4987 pending_timeout_list = Qnil; | |
| 4988 staticpro (&pending_timeout_list); | |
| 4989 | |
| 4990 pending_async_timeout_list = Qnil; | |
| 4991 staticpro (&pending_async_timeout_list); | |
| 4992 | |
| 4993 last_point_position_buffer = Qnil; | |
| 4994 staticpro (&last_point_position_buffer); | |
| 4995 | |
|
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|
4996 QSnext_event_internal = build_ascstring ("next_event_internal()"); |
| 1292 | 4997 staticpro (&QSnext_event_internal); |
|
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|
4998 QSexecute_internal_event = build_ascstring ("execute_internal_event()"); |
| 1292 | 4999 staticpro (&QSexecute_internal_event); |
| 5000 | |
| 428 | 5001 DEFVAR_LISP ("echo-keystrokes", &Vecho_keystrokes /* |
| 5002 *Nonzero means echo unfinished commands after this many seconds of pause. | |
| 5003 */ ); | |
|
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|
5004 Vecho_keystrokes = make_fixnum (1); |
| 428 | 5005 |
| 5006 DEFVAR_INT ("auto-save-interval", &auto_save_interval /* | |
| 5007 *Number of keyboard input characters between auto-saves. | |
| 5008 Zero means disable autosaving due to number of characters typed. | |
| 5009 See also the variable `auto-save-timeout'. | |
| 5010 */ ); | |
| 5011 auto_save_interval = 300; | |
| 5012 | |
| 5013 DEFVAR_LISP ("pre-command-hook", &Vpre_command_hook /* | |
| 5014 Function or functions to run before every command. | |
| 5015 This may examine the `this-command' variable to find out what command | |
| 5016 is about to be run, or may change it to cause a different command to run. | |
| 853 | 5017 Errors while running the hook are caught and turned into warnings. |
| 428 | 5018 */ ); |
| 5019 Vpre_command_hook = Qnil; | |
| 5020 | |
| 5021 DEFVAR_LISP ("post-command-hook", &Vpost_command_hook /* | |
| 5022 Function or functions to run after every command. | |
| 5023 This may examine the `this-command' variable to find out what command | |
| 5024 was just executed. | |
| 5025 */ ); | |
| 5026 Vpost_command_hook = Qnil; | |
| 5027 | |
| 5028 DEFVAR_LISP ("pre-idle-hook", &Vpre_idle_hook /* | |
| 5029 Normal hook run when XEmacs it about to be idle. | |
| 5030 This occurs whenever it is going to block, waiting for an event. | |
| 5031 This generally happens as a result of a call to `next-event', | |
| 5032 `next-command-event', `sit-for', `sleep-for', `accept-process-output', | |
| 853 | 5033 or `get-selection'. Errors while running the hook are caught and |
| 5034 turned into warnings. | |
| 428 | 5035 */ ); |
| 5036 Vpre_idle_hook = Qnil; | |
| 5037 | |
| 5038 DEFVAR_BOOL ("focus-follows-mouse", &focus_follows_mouse /* | |
| 5039 *Variable to control XEmacs behavior with respect to focus changing. | |
| 5040 If this variable is set to t, then XEmacs will not gratuitously change | |
| 5041 the keyboard focus. XEmacs cannot in general detect when this mode is | |
| 5042 used by the window manager, so it is up to the user to set it. | |
| 5043 */ ); | |
| 5044 focus_follows_mouse = 0; | |
| 5045 | |
| 5046 DEFVAR_LISP ("last-command-event", &Vlast_command_event /* | |
| 5047 Last keyboard or mouse button event that was part of a command. This | |
| 5048 variable is off limits: you may not set its value or modify the event that | |
| 5049 is its value, as it is destructively modified by `read-key-sequence'. If | |
| 5050 you want to keep a pointer to this value, you must use `copy-event'. | |
| 5051 */ ); | |
| 5052 Vlast_command_event = Qnil; | |
| 5053 | |
| 5054 DEFVAR_LISP ("last-command-char", &Vlast_command_char /* | |
| 5055 If the value of `last-command-event' is a keyboard event, then | |
| 5056 this is the nearest ASCII equivalent to it. This is the value that | |
| 5057 `self-insert-command' will put in the buffer. Remember that there is | |
| 5058 NOT a 1:1 mapping between keyboard events and ASCII characters: the set | |
| 5059 of keyboard events is much larger, so writing code that examines this | |
| 5060 variable to determine what key has been typed is bad practice, unless | |
| 5061 you are certain that it will be one of a small set of characters. | |
| 5062 */ ); | |
| 5063 Vlast_command_char = Qnil; | |
| 5064 | |
| 5065 DEFVAR_LISP ("last-input-event", &Vlast_input_event /* | |
| 5066 Last keyboard or mouse button event received. This variable is off | |
| 5067 limits: you may not set its value or modify the event that is its value, as | |
| 5068 it is destructively modified by `next-event'. If you want to keep a pointer | |
| 5069 to this value, you must use `copy-event'. | |
| 5070 */ ); | |
| 5071 Vlast_input_event = Qnil; | |
| 5072 | |
| 5073 DEFVAR_LISP ("current-mouse-event", &Vcurrent_mouse_event /* | |
| 5074 The mouse-button event which invoked this command, or nil. | |
| 5075 This is usually what `(interactive "e")' returns. | |
| 5076 */ ); | |
| 5077 Vcurrent_mouse_event = Qnil; | |
| 5078 | |
| 5079 DEFVAR_LISP ("last-input-char", &Vlast_input_char /* | |
| 5080 If the value of `last-input-event' is a keyboard event, then | |
| 5081 this is the nearest ASCII equivalent to it. Remember that there is | |
| 5082 NOT a 1:1 mapping between keyboard events and ASCII characters: the set | |
| 5083 of keyboard events is much larger, so writing code that examines this | |
| 5084 variable to determine what key has been typed is bad practice, unless | |
| 5085 you are certain that it will be one of a small set of characters. | |
| 5086 */ ); | |
| 5087 Vlast_input_char = Qnil; | |
| 5088 | |
| 5089 DEFVAR_LISP ("last-input-time", &Vlast_input_time /* | |
| 5090 The time (in seconds since Jan 1, 1970) of the last-command-event, | |
| 5091 represented as a cons of two 16-bit integers. This is destructively | |
| 5092 modified, so copy it if you want to keep it. | |
| 5093 */ ); | |
| 5094 Vlast_input_time = Qnil; | |
| 5095 | |
| 5096 DEFVAR_LISP ("last-command-event-time", &Vlast_command_event_time /* | |
| 5097 The time (in seconds since Jan 1, 1970) of the last-command-event, | |
| 5098 represented as a list of three integers. The first integer contains | |
| 5099 the most significant 16 bits of the number of seconds, and the second | |
| 5100 integer contains the least significant 16 bits. The third integer | |
| 5101 contains the remainder number of microseconds, if the current system | |
| 5102 supports microsecond clock resolution. This list is destructively | |
| 5103 modified, so copy it if you want to keep it. | |
| 5104 */ ); | |
| 5105 Vlast_command_event_time = Qnil; | |
| 5106 | |
| 5107 DEFVAR_LISP ("unread-command-events", &Vunread_command_events /* | |
| 5108 List of event objects to be read as next command input events. | |
| 5109 This can be used to simulate the receipt of events from the user. | |
| 5110 Normally this is nil. | |
| 5111 Events are removed from the front of this list. | |
| 5112 */ ); | |
| 5113 Vunread_command_events = Qnil; | |
| 5114 | |
| 5115 DEFVAR_LISP ("unread-command-event", &Vunread_command_event /* | |
| 5116 Obsolete. Use `unread-command-events' instead. | |
| 5117 */ ); | |
| 5118 Vunread_command_event = Qnil; | |
| 5119 | |
| 5120 DEFVAR_LISP ("last-command", &Vlast_command /* | |
| 5121 The last command executed. Normally a symbol with a function definition, | |
| 5122 but can be whatever was found in the keymap, or whatever the variable | |
| 5123 `this-command' was set to by that command. | |
| 5124 */ ); | |
| 5125 Vlast_command = Qnil; | |
| 5126 | |
| 5127 DEFVAR_LISP ("this-command", &Vthis_command /* | |
| 5128 The command now being executed. | |
| 5129 The command can set this variable; whatever is put here | |
| 5130 will be in `last-command' during the following command. | |
| 5131 */ ); | |
| 5132 Vthis_command = Qnil; | |
| 5133 | |
| 442 | 5134 DEFVAR_LISP ("last-command-properties", &Vlast_command_properties /* |
| 5135 Value of `this-command-properties' for the last command. | |
| 5136 Used by commands to help synchronize consecutive commands, in preference | |
| 5137 to looking at `last-command' directly. | |
| 5138 */ ); | |
| 5139 Vlast_command_properties = Qnil; | |
| 5140 | |
| 5141 DEFVAR_LISP ("this-command-properties", &Vthis_command_properties /* | |
| 5142 Properties set by the current command. | |
| 5143 At the beginning of each command, the current value of this variable is | |
| 5144 copied to `last-command-properties', and then it is set to nil. Use `putf' | |
| 5145 to add properties to this variable. Commands should use this to communicate | |
| 5146 with pre/post-command hooks, subsequent commands, wrapping commands, etc. | |
| 5147 in preference to looking at and/or setting `this-command'. | |
| 5148 */ ); | |
| 5149 Vthis_command_properties = Qnil; | |
| 5150 | |
| 428 | 5151 DEFVAR_LISP ("help-char", &Vhelp_char /* |
| 5152 Character to recognize as meaning Help. | |
| 5153 When it is read, do `(eval help-form)', and display result if it's a string. | |
| 5154 If the value of `help-form' is nil, this char can be read normally. | |
| 5155 This can be any form recognized as a single key specifier. | |
| 5156 The help-char cannot be a negative number in XEmacs. | |
| 5157 */ ); | |
| 5158 Vhelp_char = make_char (8); /* C-h */ | |
| 5159 | |
| 5160 DEFVAR_LISP ("help-form", &Vhelp_form /* | |
| 5161 Form to execute when character help-char is read. | |
| 5162 If the form returns a string, that string is displayed. | |
| 5163 If `help-form' is nil, the help char is not recognized. | |
| 5164 */ ); | |
| 5165 Vhelp_form = Qnil; | |
| 5166 | |
| 5167 DEFVAR_LISP ("prefix-help-command", &Vprefix_help_command /* | |
| 5168 Command to run when `help-char' character follows a prefix key. | |
| 5169 This command is used only when there is no actual binding | |
| 5170 for that character after that prefix key. | |
| 5171 */ ); | |
| 5172 Vprefix_help_command = Qnil; | |
| 5173 | |
| 5174 DEFVAR_CONST_LISP ("keyboard-translate-table", &Vkeyboard_translate_table /* | |
| 5175 Hash table used as translate table for keyboard input. | |
| 5176 Use `keyboard-translate' to portably add entries to this table. | |
| 5177 Each key-press event is looked up in this table as follows: | |
| 5178 | |
| 5179 -- If an entry maps a symbol to a symbol, then a key-press event whose | |
| 5180 keysym is the former symbol (with any modifiers at all) gets its | |
| 5181 keysym changed and its modifiers left alone. This is useful for | |
| 5182 dealing with non-standard X keyboards, such as the grievous damage | |
| 5183 that Sun has inflicted upon the world. | |
| 442 | 5184 -- If an entry maps a symbol to a character, then a key-press event |
| 5185 whose keysym is the former symbol (with any modifiers at all) gets | |
| 5186 changed into a key-press event matching the latter character, and the | |
| 5187 resulting modifiers are the union of the original and new modifiers. | |
| 428 | 5188 -- If an entry maps a character to a character, then a key-press event |
| 5189 matching the former character gets converted to a key-press event | |
| 5190 matching the latter character. This is useful on ASCII terminals | |
| 5191 for (e.g.) making C-\\ look like C-s, to get around flow-control | |
| 5192 problems. | |
| 5193 -- If an entry maps a character to a symbol, then a key-press event | |
| 5194 matching the character gets converted to a key-press event whose | |
| 5195 keysym is the given symbol and which has no modifiers. | |
| 442 | 5196 |
| 5197 Here's an example: This makes typing parens and braces easier by rerouting | |
| 5198 their positions to eliminate the need to use the Shift key. | |
| 5199 | |
| 5200 (keyboard-translate ?[ ?() | |
| 5201 (keyboard-translate ?] ?)) | |
| 5202 (keyboard-translate ?{ ?[) | |
| 5203 (keyboard-translate ?} ?]) | |
| 5204 (keyboard-translate 'f11 ?{) | |
| 5205 (keyboard-translate 'f12 ?}) | |
| 428 | 5206 */ ); |
| 5207 | |
| 5208 DEFVAR_LISP ("retry-undefined-key-binding-unshifted", | |
| 5209 &Vretry_undefined_key_binding_unshifted /* | |
| 5210 If a key-sequence which ends with a shifted keystroke is undefined | |
| 5211 and this variable is non-nil then the command lookup is retried again | |
| 5212 with the last key unshifted. (e.g. C-X C-F would be retried as C-X C-f.) | |
| 5213 If lookup still fails, a normal error is signalled. In general, | |
| 5214 you should *bind* this, not set it. | |
| 5215 */ ); | |
| 5216 Vretry_undefined_key_binding_unshifted = Qt; | |
| 5217 | |
| 442 | 5218 DEFVAR_BOOL ("modifier-keys-are-sticky", &modifier_keys_are_sticky /* |
| 5219 *Non-nil makes modifier keys sticky. | |
| 5220 This means that you can release the modifier key before pressing down | |
| 5221 the key that you wish to be modified. Although this is non-standard | |
| 5222 behavior, it is recommended because it reduces the strain on your hand, | |
| 5223 thus reducing the incidence of the dreaded Emacs-pinky syndrome. | |
| 444 | 5224 |
| 5225 Modifier keys are sticky within the inverval specified by | |
| 5226 `modifier-keys-sticky-time'. | |
| 442 | 5227 */ ); |
| 5228 modifier_keys_are_sticky = 0; | |
| 5229 | |
| 444 | 5230 DEFVAR_LISP ("modifier-keys-sticky-time", &Vmodifier_keys_sticky_time /* |
| 5231 *Modifier keys are sticky within this many milliseconds. | |
| 5232 If you don't want modifier keys sticking to be bounded, set this to | |
| 5233 non-integer value. | |
| 5234 | |
| 5235 This variable has no effect when `modifier-keys-are-sticky' is nil. | |
| 5236 Currently only implemented under X Window System. | |
| 5237 */ ); | |
|
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|
5238 Vmodifier_keys_sticky_time = make_fixnum (500); |
| 444 | 5239 |
| 428 | 5240 Vcontrolling_terminal = Qnil; |
| 5241 staticpro (&Vcontrolling_terminal); | |
| 5242 | |
| 5243 Vdribble_file = Qnil; | |
| 5244 staticpro (&Vdribble_file); | |
| 5245 | |
| 5246 #ifdef DEBUG_XEMACS | |
| 5247 DEFVAR_INT ("debug-emacs-events", &debug_emacs_events /* | |
| 5248 If non-zero, display debug information about Emacs events that XEmacs sees. | |
| 5249 Information is displayed on stderr. | |
| 5250 | |
| 5251 Before the event, the source of the event is displayed in parentheses, | |
| 5252 and is one of the following: | |
| 5253 | |
| 5254 \(real) A real event from the window system or | |
| 5255 terminal driver, as far as XEmacs can tell. | |
| 5256 | |
| 5257 \(keyboard macro) An event generated from a keyboard macro. | |
| 5258 | |
| 5259 \(unread-command-events) An event taken from `unread-command-events'. | |
| 5260 | |
| 5261 \(unread-command-event) An event taken from `unread-command-event'. | |
| 5262 | |
| 5263 \(command event queue) An event taken from an internal queue. | |
| 5264 Events end up on this queue when | |
| 5265 `enqueue-eval-event' is called or when | |
| 5266 user or eval events are received while | |
| 5267 XEmacs is blocking (e.g. in `sit-for', | |
| 5268 `sleep-for', or `accept-process-output', | |
| 5269 or while waiting for the reply to an | |
| 5270 X selection). | |
| 5271 | |
| 5272 \(->keyboard-translate-table) The result of an event translated through | |
| 5273 keyboard-translate-table. Note that in | |
| 5274 this case, two events are printed even | |
| 5275 though only one is really generated. | |
| 5276 | |
| 5277 \(SIGINT) A faked C-g resulting when XEmacs receives | |
| 5278 a SIGINT (e.g. C-c was pressed in XEmacs' | |
| 5279 controlling terminal or the signal was | |
| 5280 explicitly sent to the XEmacs process). | |
| 5281 */ ); | |
| 5282 debug_emacs_events = 0; | |
| 5283 #endif | |
| 5284 | |
| 2828 | 5285 DEFVAR_BOOL ("inhibit-input-event-recording", |
| 5286 &inhibit_input_event_recording /* | |
| 428 | 5287 Non-nil inhibits recording of input-events to recent-keys ring. |
| 5288 */ ); | |
| 5289 inhibit_input_event_recording = 0; | |
| 771 | 5290 |
| 428 | 5291 Vkeyboard_translate_table = |
|
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5143
diff
changeset
|
5292 make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, Qequal); |
| 2828 | 5293 |
| 5294 DEFVAR_BOOL ("try-alternate-layouts-for-commands", | |
| 5295 &try_alternate_layouts_for_commands /* | |
| 5296 Non-nil means that if looking up a command from a sequence of keys typed by | |
| 5297 the user would otherwise fail, try it again with some other keyboard | |
| 5298 layout. On X11, the only alternative to the default mapping is American | |
| 5299 QWERTY; on Windows, other mappings may be available, depending on things | |
| 5300 like the default language environment for the current user, for the system, | |
| 5301 &c. | |
| 5302 | |
| 5303 With a Russian keyboard layout on X11, for example, this means that | |
| 5304 C-Cyrillic_che C-Cyrillic_a, if you haven't given that sequence a binding | |
| 5305 yourself, will invoke `find-file.' This is because `Cyrillic_che' is | |
| 5306 physically where `x' is, and `Cyrillic_a' is where `f' is, on an American | |
| 5307 Qwerty layout, and, of course, C-x C-f is a default emacs binding for that | |
| 5308 command. | |
| 5309 */ ); | |
| 5310 try_alternate_layouts_for_commands = 1; | |
| 428 | 5311 } |
| 5312 | |
| 5313 void | |
| 5314 init_event_stream (void) | |
| 5315 { | |
| 814 | 5316 /* Normally we don't initialize the event stream when running a bare |
| 5317 temacs (the check for initialized) because it may do various things | |
| 5318 (e.g. under Xt) that we don't want any traces of in a dumped xemacs. | |
| 5319 However, sometimes we need to process events in a bare temacs (in | |
| 5320 particular, when make-docfile.el is executed); so we initialize as | |
| 5321 necessary in check_event_stream_ok(). */ | |
| 428 | 5322 if (initialized) |
| 5323 { | |
| 5324 #ifdef HAVE_UNIXOID_EVENT_LOOP | |
| 5325 init_event_unixoid (); | |
| 5326 #endif | |
| 5327 #ifdef HAVE_X_WINDOWS | |
| 5328 if (!strcmp (display_use, "x")) | |
| 5329 init_event_Xt_late (); | |
| 5330 else | |
| 5331 #endif | |
| 462 | 5332 #ifdef HAVE_GTK |
| 5333 if (!strcmp (display_use, "gtk")) | |
| 5334 init_event_gtk_late (); | |
| 5335 else | |
| 5336 #endif | |
| 428 | 5337 #ifdef HAVE_MS_WINDOWS |
| 5338 if (!strcmp (display_use, "mswindows")) | |
| 5339 init_event_mswindows_late (); | |
| 5340 else | |
| 5341 #endif | |
| 5342 { | |
| 5343 /* For TTY's, use the Xt event loop if we can; it allows | |
| 5344 us to later open an X connection. */ | |
| 5345 #if defined (HAVE_MS_WINDOWS) && (!defined (HAVE_TTY) \ | |
| 5346 || (defined (HAVE_MSG_SELECT) \ | |
| 5347 && !defined (DEBUG_TTY_EVENT_STREAM))) | |
| 5348 init_event_mswindows_late (); | |
| 5349 #elif defined (HAVE_X_WINDOWS) && !defined (DEBUG_TTY_EVENT_STREAM) | |
| 5350 init_event_Xt_late (); | |
| 5351 #elif defined (HAVE_TTY) | |
| 5352 init_event_tty_late (); | |
| 5353 #endif | |
| 5354 } | |
| 5355 init_interrupts_late (); | |
| 5356 } | |
| 5357 } | |
| 5358 | |
| 5359 | |
| 5360 /* | |
| 853 | 5361 #### this comment is at least 8 years old and some may no longer apply. |
| 5362 | |
| 428 | 5363 useful testcases for v18/v19 compatibility: |
| 5364 | |
| 5365 (defun foo () | |
| 5366 (interactive) | |
| 5367 (setq unread-command-event (character-to-event ?A (allocate-event))) | |
| 5368 (setq x (list (read-char) | |
| 5369 ; (read-key-sequence "") ; try it with and without this | |
| 5370 last-command-char last-input-char | |
| 5371 (recent-keys) (this-command-keys)))) | |
| 5372 (global-set-key "\^Q" 'foo) | |
| 5373 | |
| 5374 without the read-key-sequence: | |
| 444 | 5375 ^Q ==> (?A ?\^Q ?A [... ^Q] [^Q]) |
| 5376 ^U^U^Q ==> (?A ?\^Q ?A [... ^U ^U ^Q] [^U ^U ^Q]) | |
| 5377 ^U^U^U^G^Q ==> (?A ?\^Q ?A [... ^U ^U ^U ^G ^Q] [^Q]) | |
| 428 | 5378 |
| 5379 with the read-key-sequence: | |
| 444 | 5380 ^Qb ==> (?A [b] ?\^Q ?b [... ^Q b] [b]) |
| 5381 ^U^U^Qb ==> (?A [b] ?\^Q ?b [... ^U ^U ^Q b] [b]) | |
| 5382 ^U^U^U^G^Qb ==> (?A [b] ?\^Q ?b [... ^U ^U ^U ^G ^Q b] [b]) | |
| 428 | 5383 |
| 5384 ;the evi-mode command "4dlj.j.j.j.j.j." is also a good testcase (gag) | |
| 5385 | |
| 5386 ;(setq x (list (read-char) quit-flag))^J^G | |
| 5387 ;(let ((inhibit-quit t)) (setq x (list (read-char) quit-flag)))^J^G | |
| 5388 ;for BOTH, x should get set to (7 t), but no result should be printed. | |
| 444 | 5389 ;; #### According to the doc of quit-flag, second test should return |
|
5384
3889ef128488
Fix misspelled words, and some grammar, across the entire source tree.
Jerry James <james@xemacs.org>
parents:
5371
diff
changeset
|
5390 ;; (?\^G nil). XEmacs accidentally returns the correct value. However, |
|
3889ef128488
Fix misspelled words, and some grammar, across the entire source tree.
Jerry James <james@xemacs.org>
parents:
5371
diff
changeset
|
5391 ;; XEmacs 21.1.12 and 21.2.36 both fail on the first test. |
| 428 | 5392 |
| 5393 ;also do this: make two frames, one viewing "*scratch*", the other "foo". | |
| 5394 ;in *scratch*, type (sit-for 20)^J | |
| 5395 ;wait a couple of seconds, move cursor to foo, type "a" | |
| 5396 ;a should be inserted in foo. Cursor highlighting should not change in | |
| 5397 ;the meantime. | |
| 5398 | |
| 5399 ;do it with sleep-for. move cursor into foo, then back into *scratch* | |
| 5400 ;before typing. | |
| 5401 ;repeat also with (accept-process-output nil 20) | |
| 5402 | |
| 5403 ;make sure ^G aborts sit-for, sleep-for and accept-process-output: | |
| 5404 | |
| 5405 (defun tst () | |
| 5406 (list (condition-case c | |
| 5407 (sleep-for 20) | |
| 5408 (quit c)) | |
| 5409 (read-char))) | |
| 5410 | |
| 444 | 5411 (tst)^Ja^G ==> ((quit) ?a) with no signal |
| 5412 (tst)^J^Ga ==> ((quit) ?a) with no signal | |
| 5413 (tst)^Jabc^G ==> ((quit) ?a) with no signal, and "bc" inserted in buffer | |
| 428 | 5414 |
| 5415 ; with sit-for only do the 2nd test. | |
| 5416 ; Do all 3 tests with (accept-process-output nil 20) | |
| 5417 | |
| 5418 Do this: | |
| 5419 (setq enable-recursive-minibuffers t | |
| 5420 minibuffer-max-depth nil) | |
| 5421 ESC ESC ESC ESC - there are now two minibuffers active | |
| 5422 C-g C-g C-g - there should be active 0, not 1 | |
| 5423 Similarly: | |
| 5424 C-x C-f ~ / ? - wait for "Making completion list..." to display | |
| 5425 C-g - wait for "Quit" to display | |
| 5426 C-g - minibuffer should not be active | |
| 5427 however C-g before "Quit" is displayed should leave minibuffer active. | |
| 5428 | |
| 5429 ;do it all in both v18 and v19 and make sure all results are the same. | |
| 5430 ;all of these cases matter a lot, but some in quite subtle ways. | |
| 5431 */ | |
| 5432 | |
| 5433 /* | |
| 5434 Additional test cases for accept-process-output, sleep-for, sit-for. | |
| 5435 Be sure you do all of the above checking for C-g and focus, too! | |
| 5436 | |
| 5437 ; Make sure that timer handlers are run during, not after sit-for: | |
| 5438 (defun timer-check () | |
| 5439 (add-timeout 2 '(lambda (ignore) (message "timer ran")) nil) | |
| 5440 (sit-for 5) | |
| 5441 (message "after sit-for")) | |
| 5442 | |
| 5443 ; The first message should appear after 2 seconds, and the final message | |
| 5444 ; 3 seconds after that. | |
| 5445 ; repeat above test with (sleep-for 5) and (accept-process-output nil 5) | |
| 5446 | |
| 5447 | |
| 5448 | |
| 5449 ; Make sure that process filters are run during, not after sit-for. | |
| 5450 (defun fubar () | |
| 5451 (message "sit-for = %s" (sit-for 30))) | |
| 5452 (add-hook 'post-command-hook 'fubar) | |
| 5453 | |
| 5454 ; Now type M-x shell RET | |
| 5455 ; wait for the shell prompt then send: ls RET | |
| 5456 ; the output of ls should fill immediately, and not wait 30 seconds. | |
| 5457 | |
| 5458 ; repeat above test with (sleep-for 30) and (accept-process-output nil 30) | |
| 5459 | |
| 5460 | |
| 5461 | |
| 5462 ; Make sure that recursive invocations return immediately: | |
| 5463 (defmacro test-diff-time (start end) | |
| 5464 `(+ (* (- (car ,end) (car ,start)) 65536.0) | |
| 5465 (- (cadr ,end) (cadr ,start)) | |
| 5466 (/ (- (caddr ,end) (caddr ,start)) 1000000.0))) | |
| 5467 | |
| 5468 (defun testee (ignore) | |
| 5469 (sit-for 10)) | |
| 5470 | |
| 5471 (defun test-them () | |
| 5472 (let ((start (current-time)) | |
| 5473 end) | |
| 5474 (add-timeout 2 'testee nil) | |
| 5475 (sit-for 5) | |
| 5476 (add-timeout 2 'testee nil) | |
| 5477 (sleep-for 5) | |
| 5478 (add-timeout 2 'testee nil) | |
| 5479 (accept-process-output nil 5) | |
| 5480 (setq end (current-time)) | |
| 5481 (test-diff-time start end))) | |
| 5482 | |
| 5483 (test-them) should sit for 15 seconds. | |
| 5484 Repeat with testee set to sleep-for and accept-process-output. | |
| 5485 These should each delay 36 seconds. | |
| 5486 | |
| 5487 */ |