1 /* NeXT/Open/GNUstep / MacOSX Cocoa selection processing for emacs.
2 Copyright (C) 1993, 1994, 2005, 2006, 2008, 2009, 2010
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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)
28 /* This should be the first include, as it may set up #defines affecting
29 interpretation of even the system includes. */
35 #include "termhooks.h"
37 #define CUT_BUFFER_SUPPORT
39 Lisp_Object QPRIMARY, QSECONDARY, QTEXT, QFILE_NAME;
41 static Lisp_Object Vns_sent_selection_hooks;
42 static Lisp_Object Vns_lost_selection_hooks;
43 static Lisp_Object Vselection_alist;
44 static Lisp_Object Vselection_converter_alist;
46 static Lisp_Object Qforeign_selection;
48 NSString *NXSecondaryPboard;
52 /* ==========================================================================
54 Internal utility functions
56 ========================================================================== */
60 symbol_to_nsstring (Lisp_Object sym)
63 if (EQ (sym, QPRIMARY)) return NSGeneralPboard;
64 if (EQ (sym, QSECONDARY)) return NXSecondaryPboard;
65 if (EQ (sym, QTEXT)) return NSStringPboardType;
66 return [NSString stringWithUTF8String: SDATA (XSYMBOL (sym)->xname)];
71 ns_string_to_symbol (NSString *t)
73 if ([t isEqualToString: NSGeneralPboard])
75 if ([t isEqualToString: NXSecondaryPboard])
77 if ([t isEqualToString: NSStringPboardType])
79 if ([t isEqualToString: NSFilenamesPboardType])
81 if ([t isEqualToString: NSTabularTextPboardType])
83 return intern ([t UTF8String]);
88 clean_local_selection_data (Lisp_Object obj)
91 && INTEGERP (XCAR (obj))
93 && INTEGERP (XCAR (XCDR (obj)))
94 && NILP (XCDR (XCDR (obj))))
95 obj = Fcons (XCAR (obj), XCDR (obj));
98 && INTEGERP (XCAR (obj))
99 && INTEGERP (XCDR (obj)))
101 if (XINT (XCAR (obj)) == 0)
103 if (XINT (XCAR (obj)) == -1)
104 return make_number (- XINT (XCDR (obj)));
110 int size = ASIZE (obj);
114 return clean_local_selection_data (AREF (obj, 0));
115 copy = Fmake_vector (make_number (size), Qnil);
116 for (i = 0; i < size; i++)
117 ASET (copy, i, clean_local_selection_data (AREF (obj, i)));
126 ns_declare_pasteboard (id pb)
128 [pb declareTypes: ns_send_types owner: NSApp];
133 ns_undeclare_pasteboard (id pb)
135 [pb declareTypes: [NSArray array] owner: nil];
140 ns_string_to_pasteboard_internal (id pb, Lisp_Object str, NSString *gtype)
144 [pb declareTypes: [NSArray array] owner: nil];
149 NSString *type, *nsStr;
154 utfStr = SDATA (str);
155 nsStr = [NSString stringWithUTF8String: utfStr];
159 [pb declareTypes: ns_send_types owner: nil];
160 tenum = [ns_send_types objectEnumerator];
161 while ( (type = [tenum nextObject]) )
162 [pb setString: nsStr forType: type];
166 [pb setString: nsStr forType: gtype];
173 ns_get_local_selection (Lisp_Object selection_name,
174 Lisp_Object target_type)
176 Lisp_Object local_value;
177 Lisp_Object handler_fn, value, type, check;
180 local_value = assq_no_quit (selection_name, Vselection_alist);
182 if (NILP (local_value)) return Qnil;
184 count = specpdl_ptr - specpdl;
185 specbind (Qinhibit_quit, Qt);
186 CHECK_SYMBOL (target_type);
187 handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist));
188 if (!NILP (handler_fn))
189 value = call3 (handler_fn, selection_name, target_type,
190 XCAR (XCDR (local_value)));
193 unbind_to (count, Qnil);
196 if (CONSP (value) && SYMBOLP (XCAR (value)))
199 check = XCDR (value);
202 if (STRINGP (check) || VECTORP (check) || SYMBOLP (check)
203 || INTEGERP (check) || NILP (value))
207 && INTEGERP (XCAR (check))
208 && (INTEGERP (XCDR (check))||
209 (CONSP (XCDR (check))
210 && INTEGERP (XCAR (XCDR (check)))
211 && NILP (XCDR (XCDR (check))))))
214 // FIXME: Why `quit' rather than `error'?
215 Fsignal (Qquit, Fcons (build_string (
216 "invalid data returned by selection-conversion function"),
217 Fcons (handler_fn, Fcons (value, Qnil))));
218 // FIXME: Beware, `quit' can return!!
224 ns_get_foreign_selection (Lisp_Object symbol, Lisp_Object target)
227 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (symbol)];
228 return ns_string_from_pasteboard (pb);
233 ns_handle_selection_request (struct input_event *event)
235 // FIXME: BIG UGLY HACK!!!
236 id pb = (id)*(EMACS_INT*)&(event->x);
237 NSString *type = (NSString *)*(EMACS_INT*)&(event->y);
238 Lisp_Object selection_name, selection_data, target_symbol, data;
239 Lisp_Object successful_p, rest;
241 selection_name = ns_string_to_symbol ([(NSPasteboard *)pb name]);
242 target_symbol = ns_string_to_symbol (type);
243 selection_data = assq_no_quit (selection_name, Vselection_alist);
246 if (!NILP (selection_data))
248 data = ns_get_local_selection (selection_name, target_symbol);
252 ns_string_to_pasteboard_internal (pb, data, type);
257 if (!EQ (Vns_sent_selection_hooks, Qunbound))
259 for (rest = Vns_sent_selection_hooks; CONSP (rest); rest = Fcdr (rest))
260 call3 (Fcar (rest), selection_name, target_symbol, successful_p);
266 ns_handle_selection_clear (struct input_event *event)
268 id pb = (id)*(EMACS_INT*)&(event->x);
269 Lisp_Object selection_name, selection_data, rest;
271 selection_name = ns_string_to_symbol ([(NSPasteboard *)pb name]);
272 selection_data = assq_no_quit (selection_name, Vselection_alist);
273 if (NILP (selection_data)) return;
275 if (EQ (selection_data, Fcar (Vselection_alist)))
276 Vselection_alist = Fcdr (Vselection_alist);
279 for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest))
280 if (EQ (selection_data, Fcar (Fcdr (rest))))
281 Fsetcdr (rest, Fcdr (Fcdr (rest)));
284 if (!EQ (Vns_lost_selection_hooks, Qunbound))
286 for (rest = Vns_lost_selection_hooks;CONSP (rest); rest = Fcdr (rest))
287 call1 (Fcar (rest), selection_name);
293 /* ==========================================================================
295 Functions used externally
297 ========================================================================== */
301 ns_string_from_pasteboard (id pb)
303 NSString *type, *str;
306 type = [pb availableTypeFromArray: ns_return_types];
310 Fcons (build_string ("empty or unsupported pasteboard type"),
316 if (! (str = [pb stringForType: type]))
318 NSData *data = [pb dataForType: type];
320 str = [[NSString alloc] initWithData: data
321 encoding: NSUTF8StringEncoding];
329 Fcons (build_string ("pasteboard doesn't contain valid data"),
338 /* EOL conversion: PENDING- is this too simple? */
339 NSMutableString *mstr = [[str mutableCopy] autorelease];
340 [mstr replaceOccurrencesOfString: @"\r\n" withString: @"\n"
341 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
342 [mstr replaceOccurrencesOfString: @"\r" withString: @"\n"
343 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
345 utfStr = [mstr UTF8String];
347 utfStr = [mstr cString];
351 message1 ("ns_string_from_pasteboard: UTF8String failed\n");
352 utfStr = [str lossyCString];
356 return build_string (utfStr);
361 ns_string_to_pasteboard (id pb, Lisp_Object str)
363 ns_string_to_pasteboard_internal (pb, str, nil);
368 /* ==========================================================================
372 ========================================================================== */
375 DEFUN ("x-own-selection-internal", Fx_own_selection_internal,
376 Sx_own_selection_internal, 2, 2, 0,
377 doc: /* Assert a selection.
378 SELECTION-NAME is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
379 VALUE is typically a string, or a cons of two markers, but may be
380 anything that the functions on `selection-converter-alist' know about. */)
381 (selection_name, selection_value)
382 Lisp_Object selection_name, selection_value;
385 Lisp_Object old_value, new_value;
388 CHECK_SYMBOL (selection_name);
389 if (NILP (selection_value))
390 error ("selection-value may not be nil.");
391 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)];
392 ns_declare_pasteboard (pb);
393 old_value = assq_no_quit (selection_name, Vselection_alist);
394 new_value = Fcons (selection_name, Fcons (selection_value, Qnil));
395 if (NILP (old_value))
396 Vselection_alist = Fcons (new_value, Vselection_alist);
398 Fsetcdr (old_value, Fcdr (new_value));
399 /* XXX An evil hack, but a necessary one I fear XXX */
401 struct input_event ev;
402 ev.kind = SELECTION_REQUEST_EVENT;
405 *(EMACS_INT*)(&(ev.x)) = (EMACS_INT)pb; // FIXME: BIG UGLY HACK!!
406 *(EMACS_INT*)(&(ev.y)) = (EMACS_INT)NSStringPboardType;
407 ns_handle_selection_request (&ev);
409 return selection_value;
413 DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal,
414 Sx_disown_selection_internal, 1, 2, 0,
415 doc: /* If we own the selection SELECTION, disown it. */)
416 (selection_name, time)
417 Lisp_Object selection_name, time;
421 CHECK_SYMBOL (selection_name);
422 if (NILP (assq_no_quit (selection_name, Vselection_alist))) return Qnil;
424 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)];
425 ns_undeclare_pasteboard (pb);
430 DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
431 0, 1, 0, doc: /* Whether there is an owner for the given selection.
432 The arg should be the name of the selection in question, typically one of
433 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
434 \(Those are literal upper-case symbol names.)
435 For convenience, the symbol nil is the same as `PRIMARY',
436 and t is the same as `SECONDARY'.) */)
438 Lisp_Object selection;
444 CHECK_SYMBOL (selection);
445 if (EQ (selection, Qnil)) selection = QPRIMARY;
446 if (EQ (selection, Qt)) selection = QSECONDARY;
447 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection)];
449 return ([types count] == 0) ? Qnil : Qt;
453 DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p,
455 doc: /* Whether the current Emacs process owns the given selection.
456 The arg should be the name of the selection in question, typically one of
457 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
458 \(Those are literal upper-case symbol names.)
459 For convenience, the symbol nil is the same as `PRIMARY',
460 and t is the same as `SECONDARY'.) */)
462 Lisp_Object selection;
465 CHECK_SYMBOL (selection);
466 if (EQ (selection, Qnil)) selection = QPRIMARY;
467 if (EQ (selection, Qt)) selection = QSECONDARY;
468 return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt;
472 DEFUN ("x-get-selection-internal", Fx_get_selection_internal,
473 Sx_get_selection_internal, 2, 2, 0,
474 doc: /* Return text selected from some pasteboard.
475 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
476 \(Those are literal upper-case symbol names.)
477 TYPE is the type of data desired, typically `STRING'. */)
478 (selection_name, target_type)
479 Lisp_Object selection_name, target_type;
484 CHECK_SYMBOL (selection_name);
485 CHECK_SYMBOL (target_type);
486 val = ns_get_local_selection (selection_name, target_type);
488 val = ns_get_foreign_selection (selection_name, target_type);
489 if (CONSP (val) && SYMBOLP (Fcar (val)))
492 if (CONSP (val) && NILP (Fcdr (val)))
495 val = clean_local_selection_data (val);
500 #ifdef CUT_BUFFER_SUPPORT
501 DEFUN ("ns-get-cut-buffer-internal", Fns_get_cut_buffer_internal,
502 Sns_get_cut_buffer_internal, 1, 1, 0,
503 doc: /* Returns the value of the named cut buffer. */)
509 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)];
510 return ns_string_from_pasteboard (pb);
514 DEFUN ("ns-rotate-cut-buffers-internal", Fns_rotate_cut_buffers_internal,
515 Sns_rotate_cut_buffers_internal, 1, 1, 0,
516 doc: /* Rotate the values of the cut buffers by N steps.
517 Positive N means move values forward, negative means
518 backward. CURRENTLY NOT IMPLEMENTED UNDER NEXTSTEP. */ )
522 /* XXX This function is unimplemented under NeXTstep XXX */
523 Fsignal (Qquit, Fcons (build_string (
524 "Warning: ns-rotate-cut-buffers-internal not implemented\n"), Qnil));
529 DEFUN ("ns-store-cut-buffer-internal", Fns_store_cut_buffer_internal,
530 Sns_store_cut_buffer_internal, 2, 2, 0,
531 doc: /* Sets the value of the named cut buffer (typically CUT_BUFFER0). */)
533 Lisp_Object buffer, string;
537 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)];
538 ns_string_to_pasteboard (pb, string);
545 nxatoms_of_nsselect (void)
547 NXSecondaryPboard = @"Selection";
551 syms_of_nsselect (void)
553 QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY);
554 QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY);
555 QTEXT = intern ("TEXT"); staticpro (&QTEXT);
556 QFILE_NAME = intern ("FILE_NAME"); staticpro (&QFILE_NAME);
558 defsubr (&Sx_disown_selection_internal);
559 defsubr (&Sx_get_selection_internal);
560 defsubr (&Sx_own_selection_internal);
561 defsubr (&Sx_selection_exists_p);
562 defsubr (&Sx_selection_owner_p);
563 #ifdef CUT_BUFFER_SUPPORT
564 defsubr (&Sns_get_cut_buffer_internal);
565 defsubr (&Sns_rotate_cut_buffers_internal);
566 defsubr (&Sns_store_cut_buffer_internal);
569 Vselection_alist = Qnil;
570 staticpro (&Vselection_alist);
572 DEFVAR_LISP ("ns-sent-selection-hooks", &Vns_sent_selection_hooks,
573 "A list of functions to be called when Emacs answers a selection request.\n\
574 The functions are called with four arguments:\n\
575 - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
576 - the selection-type which Emacs was asked to convert the\n\
577 selection into before sending (for example, `STRING' or `LENGTH');\n\
578 - a flag indicating success or failure for responding to the request.\n\
579 We might have failed (and declined the request) for any number of reasons,\n\
580 including being asked for a selection that we no longer own, or being asked\n\
581 to convert into a type that we don't know about or that is inappropriate.\n\
582 This hook doesn't let you change the behavior of Emacs's selection replies,\n\
583 it merely informs you that they have happened.");
584 Vns_sent_selection_hooks = Qnil;
586 DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist,
587 "An alist associating X Windows selection-types with functions.\n\
588 These functions are called to convert the selection, with three args:\n\
589 the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
590 a desired type to which the selection should be converted;\n\
591 and the local selection value (whatever was given to `x-own-selection').\n\
593 The function should return the value to send to the X server\n\
594 \(typically a string). A return value of nil\n\
595 means that the conversion could not be done.\n\
596 A return value which is the symbol `NULL'\n\
597 means that a side-effect was executed,\n\
598 and there is no meaningful selection value.");
599 Vselection_converter_alist = Qnil;
601 DEFVAR_LISP ("ns-lost-selection-hooks", &Vns_lost_selection_hooks,
602 "A list of functions to be called when Emacs loses an X selection.\n\
603 \(This happens when some other X client makes its own selection\n\
604 or when a Lisp program explicitly clears the selection.)\n\
605 The functions are called with one argument, the selection type\n\
606 \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD').");
607 Vns_lost_selection_hooks = Qnil;
609 Qforeign_selection = intern ("foreign-selection");
610 staticpro (&Qforeign_selection);
613 // arch-tag: 39d1dde7-06a6-49ff-95a7-0e7af12d2218