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 (Lisp_Object selection_name, Lisp_Object selection_value)
384 Lisp_Object old_value, new_value;
387 CHECK_SYMBOL (selection_name);
388 if (NILP (selection_value))
389 error ("selection-value may not be nil.");
390 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)];
391 ns_declare_pasteboard (pb);
392 old_value = assq_no_quit (selection_name, Vselection_alist);
393 new_value = Fcons (selection_name, Fcons (selection_value, Qnil));
394 if (NILP (old_value))
395 Vselection_alist = Fcons (new_value, Vselection_alist);
397 Fsetcdr (old_value, Fcdr (new_value));
398 /* XXX An evil hack, but a necessary one I fear XXX */
400 struct input_event ev;
401 ev.kind = SELECTION_REQUEST_EVENT;
404 *(EMACS_INT*)(&(ev.x)) = (EMACS_INT)pb; // FIXME: BIG UGLY HACK!!
405 *(EMACS_INT*)(&(ev.y)) = (EMACS_INT)NSStringPboardType;
406 ns_handle_selection_request (&ev);
408 return selection_value;
412 DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal,
413 Sx_disown_selection_internal, 1, 2, 0,
414 doc: /* If we own the selection SELECTION, disown it. */)
415 (Lisp_Object selection_name, Lisp_Object time)
419 CHECK_SYMBOL (selection_name);
420 if (NILP (assq_no_quit (selection_name, Vselection_alist))) return Qnil;
422 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)];
423 ns_undeclare_pasteboard (pb);
428 DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
429 0, 1, 0, doc: /* Whether there is an owner for the given selection.
430 The arg should be the name of the selection in question, typically one of
431 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
432 \(Those are literal upper-case symbol names.)
433 For convenience, the symbol nil is the same as `PRIMARY',
434 and t is the same as `SECONDARY'.) */)
435 (Lisp_Object selection)
441 CHECK_SYMBOL (selection);
442 if (EQ (selection, Qnil)) selection = QPRIMARY;
443 if (EQ (selection, Qt)) selection = QSECONDARY;
444 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection)];
446 return ([types count] == 0) ? Qnil : Qt;
450 DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p,
452 doc: /* Whether the current Emacs process owns the given selection.
453 The arg should be the name of the selection in question, typically one of
454 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
455 \(Those are literal upper-case symbol names.)
456 For convenience, the symbol nil is the same as `PRIMARY',
457 and t is the same as `SECONDARY'.) */)
458 (Lisp_Object selection)
461 CHECK_SYMBOL (selection);
462 if (EQ (selection, Qnil)) selection = QPRIMARY;
463 if (EQ (selection, Qt)) selection = QSECONDARY;
464 return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt;
468 DEFUN ("x-get-selection-internal", Fx_get_selection_internal,
469 Sx_get_selection_internal, 2, 2, 0,
470 doc: /* Return text selected from some pasteboard.
471 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
472 \(Those are literal upper-case symbol names.)
473 TYPE is the type of data desired, typically `STRING'. */)
474 (Lisp_Object selection_name, Lisp_Object target_type)
479 CHECK_SYMBOL (selection_name);
480 CHECK_SYMBOL (target_type);
481 val = ns_get_local_selection (selection_name, target_type);
483 val = ns_get_foreign_selection (selection_name, target_type);
484 if (CONSP (val) && SYMBOLP (Fcar (val)))
487 if (CONSP (val) && NILP (Fcdr (val)))
490 val = clean_local_selection_data (val);
495 #ifdef CUT_BUFFER_SUPPORT
496 DEFUN ("ns-get-cut-buffer-internal", Fns_get_cut_buffer_internal,
497 Sns_get_cut_buffer_internal, 1, 1, 0,
498 doc: /* Returns the value of the named cut buffer. */)
503 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)];
504 return ns_string_from_pasteboard (pb);
508 DEFUN ("ns-rotate-cut-buffers-internal", Fns_rotate_cut_buffers_internal,
509 Sns_rotate_cut_buffers_internal, 1, 1, 0,
510 doc: /* Rotate the values of the cut buffers by N steps.
511 Positive N means move values forward, negative means
512 backward. CURRENTLY NOT IMPLEMENTED UNDER NEXTSTEP. */ )
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));
522 DEFUN ("ns-store-cut-buffer-internal", Fns_store_cut_buffer_internal,
523 Sns_store_cut_buffer_internal, 2, 2, 0,
524 doc: /* Sets the value of the named cut buffer (typically CUT_BUFFER0). */)
525 (Lisp_Object buffer, Lisp_Object string)
529 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)];
530 ns_string_to_pasteboard (pb, string);
537 nxatoms_of_nsselect (void)
539 NXSecondaryPboard = @"Selection";
543 syms_of_nsselect (void)
545 QPRIMARY = intern ("PRIMARY"); staticpro (&QPRIMARY);
546 QSECONDARY = intern ("SECONDARY"); staticpro (&QSECONDARY);
547 QTEXT = intern ("TEXT"); staticpro (&QTEXT);
548 QFILE_NAME = intern ("FILE_NAME"); staticpro (&QFILE_NAME);
550 defsubr (&Sx_disown_selection_internal);
551 defsubr (&Sx_get_selection_internal);
552 defsubr (&Sx_own_selection_internal);
553 defsubr (&Sx_selection_exists_p);
554 defsubr (&Sx_selection_owner_p);
555 #ifdef CUT_BUFFER_SUPPORT
556 defsubr (&Sns_get_cut_buffer_internal);
557 defsubr (&Sns_rotate_cut_buffers_internal);
558 defsubr (&Sns_store_cut_buffer_internal);
561 Vselection_alist = Qnil;
562 staticpro (&Vselection_alist);
564 DEFVAR_LISP ("ns-sent-selection-hooks", &Vns_sent_selection_hooks,
565 "A list of functions to be called when Emacs answers a selection request.\n\
566 The functions are called with four arguments:\n\
567 - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
568 - the selection-type which Emacs was asked to convert the\n\
569 selection into before sending (for example, `STRING' or `LENGTH');\n\
570 - a flag indicating success or failure for responding to the request.\n\
571 We might have failed (and declined the request) for any number of reasons,\n\
572 including being asked for a selection that we no longer own, or being asked\n\
573 to convert into a type that we don't know about or that is inappropriate.\n\
574 This hook doesn't let you change the behavior of Emacs's selection replies,\n\
575 it merely informs you that they have happened.");
576 Vns_sent_selection_hooks = Qnil;
578 DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist,
579 "An alist associating X Windows selection-types with functions.\n\
580 These functions are called to convert the selection, with three args:\n\
581 the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
582 a desired type to which the selection should be converted;\n\
583 and the local selection value (whatever was given to `x-own-selection').\n\
585 The function should return the value to send to the X server\n\
586 \(typically a string). A return value of nil\n\
587 means that the conversion could not be done.\n\
588 A return value which is the symbol `NULL'\n\
589 means that a side-effect was executed,\n\
590 and there is no meaningful selection value.");
591 Vselection_converter_alist = Qnil;
593 DEFVAR_LISP ("ns-lost-selection-hooks", &Vns_lost_selection_hooks,
594 "A list of functions to be called when Emacs loses an X selection.\n\
595 \(This happens when some other X client makes its own selection\n\
596 or when a Lisp program explicitly clears the selection.)\n\
597 The functions are called with one argument, the selection type\n\
598 \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD').");
599 Vns_lost_selection_hooks = Qnil;
601 Qforeign_selection = intern ("foreign-selection");
602 staticpro (&Qforeign_selection);
605 // arch-tag: 39d1dde7-06a6-49ff-95a7-0e7af12d2218