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edfda783 | 1 | /* NeXT/Open/GNUstep / MacOSX Cocoa selection processing for emacs. |
32d235f8 GM |
2 | Copyright (C) 1993, 1994, 2005, 2006, 2008 |
3 | Free Software Foundation, Inc. | |
edfda783 AR |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
32d235f8 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
edfda783 | 8 | it under the terms of the GNU General Public License as published by |
32d235f8 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
edfda783 AR |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
32d235f8 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
edfda783 | 19 | |
32d235f8 | 20 | /* |
edfda783 AR |
21 | Originally by Carl Edman |
22 | Updated by Christian Limpach (chris@nice.ch) | |
23 | OpenStep/Rhapsody port by Scott Bender (sbender@harmony-ds.com) | |
24 | MacOSX/Aqua port by Christophe de Dinechin (descubes@earthlink.net) | |
25 | GNUstep port and post-20 update by Adrian Robert (arobert@cogsci.ucsd.edu) | |
edfda783 AR |
26 | */ |
27 | ||
28 | #include "config.h" | |
29 | #include "lisp.h" | |
30 | #include "nsterm.h" | |
31 | #include "termhooks.h" | |
32 | ||
33 | #define CUT_BUFFER_SUPPORT | |
34 | ||
35 | Lisp_Object QPRIMARY, QSECONDARY, QTEXT, QFILE_NAME; | |
36 | ||
37 | static Lisp_Object Vns_sent_selection_hooks; | |
38 | static Lisp_Object Vns_lost_selection_hooks; | |
39 | static Lisp_Object Vselection_alist; | |
40 | static Lisp_Object Vselection_converter_alist; | |
41 | ||
42 | /* 23: new */ | |
43 | /* Coding system for communicating with other programs. */ | |
44 | static Lisp_Object Vselection_coding_system; | |
45 | /* Coding system for the next communicating with other programs. */ | |
46 | static Lisp_Object Vnext_selection_coding_system; | |
47 | static Lisp_Object Qforeign_selection; | |
48 | ||
49 | NSString *NXSecondaryPboard; | |
50 | ||
51 | ||
52 | ||
53 | /* ========================================================================== | |
54 | ||
55 | Internal utility functions | |
56 | ||
57 | ========================================================================== */ | |
58 | ||
59 | ||
60 | static NSString * | |
61 | symbol_to_nsstring (Lisp_Object sym) | |
62 | { | |
63 | CHECK_SYMBOL (sym); | |
64 | if (EQ (sym, QPRIMARY)) return NSGeneralPboard; | |
65 | if (EQ (sym, QSECONDARY)) return NXSecondaryPboard; | |
66 | if (EQ (sym, QTEXT)) return NSStringPboardType; | |
67 | return [NSString stringWithUTF8String: XSTRING (XSYMBOL (sym)->xname)->data]; | |
68 | } | |
69 | ||
70 | ||
71 | static Lisp_Object | |
72 | ns_string_to_symbol (NSString *t) | |
73 | { | |
74 | if ([t isEqualToString: NSGeneralPboard]) | |
75 | return QPRIMARY; | |
76 | if ([t isEqualToString: NXSecondaryPboard]) | |
77 | return QSECONDARY; | |
78 | if ([t isEqualToString: NSStringPboardType]) | |
79 | return QTEXT; | |
80 | if ([t isEqualToString: NSFilenamesPboardType]) | |
81 | return QFILE_NAME; | |
82 | if ([t isEqualToString: NSTabularTextPboardType]) | |
83 | return QTEXT; | |
84 | return intern ([t UTF8String]); | |
85 | } | |
86 | ||
87 | ||
88 | static Lisp_Object | |
89 | clean_local_selection_data (Lisp_Object obj) | |
90 | { | |
91 | if (CONSP (obj) | |
92 | && INTEGERP (XCAR (obj)) | |
93 | && CONSP (XCDR (obj)) | |
94 | && INTEGERP (XCAR (XCDR (obj))) | |
95 | && NILP (XCDR (XCDR (obj)))) | |
96 | obj = Fcons (XCAR (obj), XCDR (obj)); | |
97 | ||
98 | if (CONSP (obj) | |
99 | && INTEGERP (XCAR (obj)) | |
100 | && INTEGERP (XCDR (obj))) | |
101 | { | |
102 | if (XINT (XCAR (obj)) == 0) | |
103 | return XCDR (obj); | |
104 | if (XINT (XCAR (obj)) == -1) | |
105 | return make_number (- XINT (XCDR (obj))); | |
106 | } | |
107 | ||
108 | if (VECTORP (obj)) | |
109 | { | |
110 | int i; | |
111 | int size = XVECTOR (obj)->size; | |
112 | Lisp_Object copy; | |
113 | ||
114 | if (size == 1) | |
115 | return clean_local_selection_data (XVECTOR (obj)->contents [0]); | |
116 | copy = Fmake_vector (size, Qnil); | |
117 | for (i = 0; i < size; i++) | |
118 | XVECTOR (copy)->contents [i] | |
119 | = clean_local_selection_data (XVECTOR (obj)->contents [i]); | |
120 | return copy; | |
121 | } | |
122 | ||
123 | return obj; | |
124 | } | |
125 | ||
126 | ||
127 | static void | |
128 | ns_declare_pasteboard (id pb) | |
129 | { | |
130 | [pb declareTypes: ns_send_types owner: NSApp]; | |
131 | } | |
132 | ||
133 | ||
134 | static void | |
135 | ns_undeclare_pasteboard (id pb) | |
136 | { | |
137 | [pb declareTypes: [NSArray array] owner: nil]; | |
138 | } | |
139 | ||
140 | ||
141 | static void | |
142 | ns_string_to_pasteboard_internal (id pb, Lisp_Object str, NSString *gtype) | |
143 | { | |
144 | if (EQ (str, Qnil)) | |
145 | { | |
146 | [pb declareTypes: [NSArray array] owner: nil]; | |
147 | } | |
148 | else | |
149 | { | |
150 | char *utfStr; | |
151 | NSString *type, *nsStr; | |
152 | NSEnumerator *tenum; | |
153 | ||
154 | CHECK_STRING (str); | |
155 | ||
156 | utfStr = XSTRING (str)->data; | |
157 | nsStr = [NSString stringWithUTF8String: utfStr]; | |
158 | ||
159 | if (gtype == nil) | |
160 | { | |
161 | [pb declareTypes: ns_send_types owner: nil]; | |
162 | tenum = [ns_send_types objectEnumerator]; | |
163 | while ( (type = [tenum nextObject]) ) | |
164 | [pb setString: nsStr forType: type]; | |
165 | } | |
166 | else | |
167 | { | |
168 | [pb setString: nsStr forType: gtype]; | |
169 | } | |
170 | } | |
171 | } | |
172 | ||
173 | ||
174 | static Lisp_Object | |
175 | ns_get_local_selection (Lisp_Object selection_name, | |
176 | Lisp_Object target_type) | |
177 | { | |
178 | Lisp_Object local_value; | |
179 | Lisp_Object handler_fn, value, type, check; | |
180 | int count; | |
181 | ||
182 | local_value = assq_no_quit (selection_name, Vselection_alist); | |
183 | ||
184 | if (NILP (local_value)) return Qnil; | |
185 | ||
186 | count = specpdl_ptr - specpdl; | |
187 | specbind (Qinhibit_quit, Qt); | |
188 | CHECK_SYMBOL (target_type); | |
189 | handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist)); | |
190 | if (!NILP (handler_fn)) | |
191 | value =call3 (handler_fn, selection_name, target_type, | |
192 | XCAR (XCDR (local_value))); | |
193 | else | |
194 | value =Qnil; | |
195 | unbind_to (count, Qnil); | |
196 | ||
197 | check =value; | |
198 | if (CONSP (value) && SYMBOLP (XCAR (value))) | |
199 | { | |
200 | type = XCAR (value); | |
201 | check = XCDR (value); | |
202 | } | |
203 | ||
204 | if (STRINGP (check) || VECTORP (check) || SYMBOLP (check) | |
205 | || INTEGERP (check) || NILP (value)) | |
206 | return value; | |
207 | ||
208 | if (CONSP (check) | |
209 | && INTEGERP (XCAR (check)) | |
210 | && (INTEGERP (XCDR (check))|| | |
211 | (CONSP (XCDR (check)) | |
212 | && INTEGERP (XCAR (XCDR (check))) | |
213 | && NILP (XCDR (XCDR (check)))))) | |
214 | return value; | |
215 | ||
216 | Fsignal (Qquit, Fcons (build_string ( | |
217 | "invalid data returned by selection-conversion function"), | |
218 | Fcons (handler_fn, Fcons (value, Qnil)))); | |
219 | } | |
220 | ||
221 | ||
222 | static Lisp_Object | |
223 | ns_get_foreign_selection (Lisp_Object symbol, Lisp_Object target) | |
224 | { | |
225 | id pb; | |
226 | pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (symbol)]; | |
227 | return ns_string_from_pasteboard (pb); | |
228 | } | |
229 | ||
230 | ||
231 | static void | |
232 | ns_handle_selection_request (struct input_event *event) | |
233 | { | |
234 | id pb =(id)event->x; | |
235 | NSString *type =(NSString *)event->y; | |
236 | Lisp_Object selection_name, selection_data, target_symbol, data; | |
237 | Lisp_Object successful_p, rest; | |
238 | ||
239 | selection_name =ns_string_to_symbol ([(NSPasteboard *)pb name]); | |
240 | target_symbol =ns_string_to_symbol (type); | |
241 | selection_data = assq_no_quit (selection_name, Vselection_alist); | |
242 | successful_p =Qnil; | |
243 | ||
244 | if (!NILP (selection_data)) | |
245 | { | |
246 | data = ns_get_local_selection (selection_name, target_symbol); | |
247 | if (!NILP (data)) | |
248 | { | |
249 | if (STRINGP (data)) | |
250 | ns_string_to_pasteboard_internal (pb, data, type); | |
251 | successful_p =Qt; | |
252 | } | |
253 | } | |
254 | ||
255 | if (!EQ (Vns_sent_selection_hooks, Qunbound)) | |
256 | { | |
257 | for (rest =Vns_sent_selection_hooks;CONSP (rest); rest =Fcdr (rest)) | |
258 | call3 (Fcar (rest), selection_name, target_symbol, successful_p); | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | static void | |
264 | ns_handle_selection_clear (struct input_event *event) | |
265 | { | |
266 | id pb = (id)event->x; | |
267 | Lisp_Object selection_name, selection_data, rest; | |
268 | ||
269 | selection_name =ns_string_to_symbol ([(NSPasteboard *)pb name]); | |
270 | selection_data =assq_no_quit (selection_name, Vselection_alist); | |
271 | if (NILP (selection_data)) return; | |
272 | ||
273 | if (EQ (selection_data, Fcar (Vselection_alist))) | |
274 | Vselection_alist = Fcdr (Vselection_alist); | |
275 | else | |
276 | { | |
277 | for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest)) | |
278 | if (EQ (selection_data, Fcar (Fcdr (rest)))) | |
279 | Fsetcdr (rest, Fcdr (Fcdr (rest))); | |
280 | } | |
281 | ||
282 | if (!EQ (Vns_lost_selection_hooks, Qunbound)) | |
283 | { | |
284 | for (rest =Vns_lost_selection_hooks;CONSP (rest); rest =Fcdr (rest)) | |
285 | call1 (Fcar (rest), selection_name); | |
286 | } | |
287 | } | |
288 | ||
289 | ||
290 | ||
291 | /* ========================================================================== | |
292 | ||
293 | Functions used externally | |
294 | ||
295 | ========================================================================== */ | |
296 | ||
297 | ||
298 | Lisp_Object | |
299 | ns_string_from_pasteboard (id pb) | |
300 | { | |
301 | NSString *type, *str; | |
302 | const char *utfStr; | |
303 | ||
304 | type = [pb availableTypeFromArray: ns_return_types]; | |
305 | if (type == nil) | |
306 | { | |
307 | Fsignal (Qquit, | |
308 | Fcons (build_string ("empty or unsupported pasteboard type"), | |
309 | Qnil)); | |
310 | return Qnil; | |
311 | } | |
312 | ||
313 | /* get the string */ | |
314 | if (! (str = [pb stringForType: type])) | |
315 | { | |
316 | NSData *data = [pb dataForType: type]; | |
317 | if (data != nil) | |
318 | str = [[NSString alloc] initWithData: data | |
319 | encoding: NSUTF8StringEncoding]; | |
320 | if (str != nil) | |
321 | { | |
322 | [str autorelease]; | |
323 | } | |
324 | else | |
325 | { | |
326 | Fsignal (Qquit, | |
327 | Fcons (build_string ("pasteboard doesn't contain valid data"), | |
328 | Qnil)); | |
329 | return Qnil; | |
330 | } | |
331 | } | |
332 | ||
333 | /* assume UTF8 */ | |
334 | NS_DURING | |
335 | { | |
336 | /* EOL conversion: PENDING- is this too simple? */ | |
337 | NSMutableString *mstr = [[str mutableCopy] autorelease]; | |
338 | [mstr replaceOccurrencesOfString: @"\r\n" withString: @"\n" | |
339 | options: NSLiteralSearch range: NSMakeRange (0, [mstr length])]; | |
340 | [mstr replaceOccurrencesOfString: @"\r" withString: @"\n" | |
341 | options: NSLiteralSearch range: NSMakeRange (0, [mstr length])]; | |
342 | ||
343 | utfStr = [mstr UTF8String]; | |
344 | if (!utfStr) | |
345 | utfStr = [mstr cString]; | |
346 | } | |
347 | NS_HANDLER | |
348 | { | |
349 | message1 ("ns_string_from_pasteboard: UTF8String failed\n"); | |
350 | utfStr = [str lossyCString]; | |
351 | } | |
352 | NS_ENDHANDLER | |
353 | ||
354 | return build_string (utfStr); | |
355 | } | |
356 | ||
357 | ||
358 | void | |
359 | ns_string_to_pasteboard (id pb, Lisp_Object str) | |
360 | { | |
361 | ns_string_to_pasteboard_internal (pb, str, nil); | |
362 | } | |
363 | ||
364 | ||
365 | ||
366 | /* ========================================================================== | |
367 | ||
368 | Lisp Defuns | |
369 | ||
370 | ========================================================================== */ | |
371 | ||
372 | ||
373 | DEFUN ("ns-own-selection-internal", Fns_own_selection_internal, | |
374 | Sns_own_selection_internal, 2, 2, 0, "Assert a selection.") | |
375 | (selection_name, selection_value) | |
376 | Lisp_Object selection_name, selection_value; | |
377 | { | |
378 | id pb; | |
379 | Lisp_Object old_value, new_value; | |
380 | ||
381 | check_ns (); | |
382 | CHECK_SYMBOL (selection_name); | |
383 | if (NILP (selection_value)) | |
384 | error ("selection-value may not be nil."); | |
385 | pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)]; | |
386 | ns_declare_pasteboard (pb); | |
387 | old_value =assq_no_quit (selection_name, Vselection_alist); | |
388 | new_value = Fcons (selection_name, Fcons (selection_value, Qnil)); | |
389 | if (NILP (old_value)) | |
390 | Vselection_alist =Fcons (new_value, Vselection_alist); | |
391 | else | |
392 | Fsetcdr (old_value, Fcdr (new_value)); | |
393 | /* XXX An evil hack, but a necessary one I fear XXX */ | |
394 | { | |
395 | struct input_event ev; | |
396 | ev.kind = SELECTION_REQUEST_EVENT; | |
397 | ev.modifiers = 0; | |
398 | ev.code = 0; | |
399 | ev.x = (int)pb; | |
400 | ev.y = (int)NSStringPboardType; | |
401 | ns_handle_selection_request (&ev); | |
402 | } | |
403 | return selection_value; | |
404 | } | |
405 | ||
406 | ||
407 | DEFUN ("ns-disown-selection-internal", Fns_disown_selection_internal, | |
408 | Sns_disown_selection_internal, 1, 2, 0, | |
409 | "If we own the selection SELECTION, disown it.") | |
410 | (selection_name, time) | |
411 | Lisp_Object selection_name, time; | |
412 | { | |
413 | id pb; | |
414 | check_ns (); | |
415 | CHECK_SYMBOL (selection_name); | |
416 | if (NILP (assq_no_quit (selection_name, Vselection_alist))) return Qnil; | |
417 | ||
418 | pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)]; | |
419 | ns_undeclare_pasteboard (pb); | |
420 | return Qt; | |
421 | } | |
422 | ||
423 | ||
424 | DEFUN ("ns-selection-exists-p", Fns_selection_exists_p, Sns_selection_exists_p, | |
425 | 0, 1, 0, "Whether there is an owner for the given selection.\n\ | |
426 | The arg should be the name of the selection in question, typically one of\n\ | |
427 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
428 | \(Those are literal upper-case symbol names.)\n\ | |
429 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
430 | and t is the same as `SECONDARY'.)") | |
431 | (selection) | |
432 | Lisp_Object selection; | |
433 | { | |
434 | id pb; | |
435 | NSArray *types; | |
436 | ||
437 | check_ns (); | |
438 | CHECK_SYMBOL (selection); | |
439 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
440 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
441 | pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection)]; | |
442 | types =[pb types]; | |
443 | return ([types count] == 0) ? Qnil : Qt; | |
444 | } | |
445 | ||
446 | ||
447 | DEFUN ("ns-selection-owner-p", Fns_selection_owner_p, Sns_selection_owner_p, | |
448 | 0, 1, 0, | |
449 | "Whether the current Emacs process owns the given selection.\n\ | |
450 | The arg should be the name of the selection in question, typically one of\n\ | |
451 | the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
452 | \(Those are literal upper-case symbol names.)\n\ | |
453 | For convenience, the symbol nil is the same as `PRIMARY',\n\ | |
454 | and t is the same as `SECONDARY'.)") | |
455 | (selection) | |
456 | Lisp_Object selection; | |
457 | { | |
458 | check_ns (); | |
459 | CHECK_SYMBOL (selection); | |
460 | if (EQ (selection, Qnil)) selection = QPRIMARY; | |
461 | if (EQ (selection, Qt)) selection = QSECONDARY; | |
462 | return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt; | |
463 | } | |
464 | ||
465 | ||
466 | DEFUN ("ns-get-selection-internal", Fns_get_selection_internal, | |
467 | Sns_get_selection_internal, 2, 2, 0, | |
468 | "Return text selected from some pasteboard.\n\ | |
469 | SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.\n\ | |
470 | \(Those are literal upper-case symbol names.)\n\ | |
471 | TYPE is the type of data desired, typically `STRING'.") | |
472 | (selection_name, target_type) | |
473 | Lisp_Object selection_name, target_type; | |
474 | { | |
475 | Lisp_Object val; | |
476 | ||
477 | check_ns (); | |
478 | CHECK_SYMBOL (selection_name); | |
479 | CHECK_SYMBOL (target_type); | |
480 | val = ns_get_local_selection (selection_name, target_type); | |
481 | if (NILP (val)) | |
482 | val = ns_get_foreign_selection (selection_name, target_type); | |
483 | if (CONSP (val) && SYMBOLP (Fcar (val))) | |
484 | { | |
485 | val = Fcdr (val); | |
486 | if (CONSP (val) && NILP (Fcdr (val))) | |
487 | val = Fcar (val); | |
488 | } | |
489 | val = clean_local_selection_data (val); | |
490 | return val; | |
491 | } | |
492 | ||
493 | ||
494 | #ifdef CUT_BUFFER_SUPPORT | |
495 | DEFUN ("ns-get-cut-buffer-internal", Fns_get_cut_buffer_internal, | |
496 | Sns_get_cut_buffer_internal, 1, 1, 0, | |
497 | "Returns the value of the named cut buffer.") | |
498 | (buffer) | |
499 | Lisp_Object buffer; | |
500 | { | |
501 | id pb; | |
502 | check_ns (); | |
503 | pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)]; | |
504 | return ns_string_from_pasteboard (pb); | |
505 | } | |
506 | ||
507 | ||
508 | DEFUN ("ns-rotate-cut-buffers-internal", Fns_rotate_cut_buffers_internal, | |
509 | Sns_rotate_cut_buffers_internal, 1, 1, 0, | |
510 | "Rotate the values of the cut buffers by the given number of steps;\n\ | |
511 | positive means move values forward, negative means backward. CURRENTLY NOT IMPLEMENTED UNDER NeXTstep.") | |
512 | (n) | |
513 | Lisp_Object n; | |
514 | { | |
515 | /* XXX This function is unimplemented under NeXTstep XXX */ | |
516 | Fsignal (Qquit, Fcons (build_string ( | |
517 | "Warning: ns-rotate-cut-buffers-internal not implemented\n"), Qnil)); | |
518 | return Qnil; | |
519 | } | |
520 | ||
521 | ||
522 | DEFUN ("ns-store-cut-buffer-internal", Fns_store_cut_buffer_internal, | |
523 | Sns_store_cut_buffer_internal, 2, 2, 0, | |
524 | "Sets the value of the named cut buffer (typically CUT_BUFFER0).") | |
525 | (buffer, string) | |
526 | Lisp_Object buffer, string; | |
527 | { | |
528 | id pb; | |
529 | check_ns (); | |
530 | pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)]; | |
531 | ns_string_to_pasteboard (pb, string); | |
532 | return Qnil; | |
533 | } | |
534 | #endif | |
535 | ||
536 | ||
537 | void | |
538 | nxatoms_of_nsselect (void) | |
539 | { | |
540 | NXSecondaryPboard = @"Selection"; | |
541 | } | |
542 | ||
543 | void | |
544 | syms_of_nsselect (void) | |
545 | { | |
546 | QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY); | |
547 | QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY); | |
548 | QTEXT = intern ("TEXT"); staticpro (&QTEXT); | |
549 | QFILE_NAME = intern ("FILE_NAME"); staticpro (&QFILE_NAME); | |
550 | ||
551 | defsubr (&Sns_disown_selection_internal); | |
552 | defsubr (&Sns_get_selection_internal); | |
553 | defsubr (&Sns_own_selection_internal); | |
554 | defsubr (&Sns_selection_exists_p); | |
555 | defsubr (&Sns_selection_owner_p); | |
556 | #ifdef CUT_BUFFER_SUPPORT | |
557 | defsubr (&Sns_get_cut_buffer_internal); | |
558 | defsubr (&Sns_rotate_cut_buffers_internal); | |
559 | defsubr (&Sns_store_cut_buffer_internal); | |
560 | #endif | |
561 | ||
562 | Vselection_alist = Qnil; | |
563 | staticpro (&Vselection_alist); | |
564 | ||
565 | DEFVAR_LISP ("ns-sent-selection-hooks", &Vns_sent_selection_hooks, | |
566 | "A list of functions to be called when Emacs answers a selection request.\n\ | |
567 | The functions are called with four arguments:\n\ | |
568 | - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
569 | - the selection-type which Emacs was asked to convert the\n\ | |
570 | selection into before sending (for example, `STRING' or `LENGTH');\n\ | |
571 | - a flag indicating success or failure for responding to the request.\n\ | |
572 | We might have failed (and declined the request) for any number of reasons,\n\ | |
573 | including being asked for a selection that we no longer own, or being asked\n\ | |
574 | to convert into a type that we don't know about or that is inappropriate.\n\ | |
575 | This hook doesn't let you change the behavior of Emacs's selection replies,\n\ | |
576 | it merely informs you that they have happened."); | |
577 | Vns_sent_selection_hooks = Qnil; | |
578 | ||
579 | DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist, | |
580 | "An alist associating X Windows selection-types with functions.\n\ | |
581 | These functions are called to convert the selection, with three args:\n\ | |
582 | the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\ | |
583 | a desired type to which the selection should be converted;\n\ | |
584 | and the local selection value (whatever was given to `x-own-selection').\n\ | |
585 | \n\ | |
586 | The function should return the value to send to the X server\n\ | |
587 | \(typically a string). A return value of nil\n\ | |
588 | means that the conversion could not be done.\n\ | |
589 | A return value which is the symbol `NULL'\n\ | |
590 | means that a side-effect was executed,\n\ | |
591 | and there is no meaningful selection value."); | |
592 | Vselection_converter_alist = Qnil; | |
593 | ||
594 | DEFVAR_LISP ("ns-lost-selection-hooks", &Vns_lost_selection_hooks, | |
595 | "A list of functions to be called when Emacs loses an X selection.\n\ | |
596 | \(This happens when some other X client makes its own selection\n\ | |
597 | or when a Lisp program explicitly clears the selection.)\n\ | |
598 | The functions are called with one argument, the selection type\n\ | |
599 | \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD')."); | |
600 | Vns_lost_selection_hooks = Qnil; | |
601 | ||
602 | /* 23: { */ | |
603 | DEFVAR_LISP ("selection-coding-system", &Vselection_coding_system, | |
604 | doc: /* Coding system for communicating with other programs. | |
605 | When sending or receiving text via cut_buffer, selection, and clipboard, | |
606 | the text is encoded or decoded by this coding system. | |
607 | The default value is determined by the system script code. */); | |
608 | Vselection_coding_system = Qnil; | |
609 | ||
610 | DEFVAR_LISP ("next-selection-coding-system", &Vnext_selection_coding_system, | |
611 | doc: /* Coding system for the next communication with other programs. | |
612 | Usually, `selection-coding-system' is used for communicating with | |
613 | other programs. But, if this variable is set, it is used for the | |
614 | next communication only. After the communication, this variable is | |
615 | set to nil. */); | |
616 | Vnext_selection_coding_system = Qnil; | |
617 | ||
618 | Qforeign_selection = intern ("foreign-selection"); | |
619 | staticpro (&Qforeign_selection); | |
620 | /* } */ | |
621 | ||
622 | } | |
0ae1e5e5 | 623 | |
2f8e74bb | 624 | // arch-tag: 39d1dde7-06a6-49ff-95a7-0e7af12d2218 |