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"
38 #define CUT_BUFFER_SUPPORT
40 Lisp_Object QCLIPBOARD, QSECONDARY, QTEXT, QFILE_NAME;
42 static Lisp_Object Vns_sent_selection_hooks;
43 static Lisp_Object Vns_lost_selection_hooks;
44 static Lisp_Object Vselection_alist;
45 static Lisp_Object Vselection_converter_alist;
47 static Lisp_Object Qforeign_selection;
49 /* NSGeneralPboard is pretty much analogous to X11 CLIPBOARD */
50 NSString *NXPrimaryPboard;
51 NSString *NXSecondaryPboard;
55 /* ==========================================================================
57 Internal utility functions
59 ========================================================================== */
63 symbol_to_nsstring (Lisp_Object sym)
66 if (EQ (sym, QCLIPBOARD)) return NSGeneralPboard;
67 if (EQ (sym, QPRIMARY)) return NXPrimaryPboard;
68 if (EQ (sym, QSECONDARY)) return NXSecondaryPboard;
69 if (EQ (sym, QTEXT)) return NSStringPboardType;
70 return [NSString stringWithUTF8String: SDATA (XSYMBOL (sym)->xname)];
75 ns_string_to_symbol (NSString *t)
77 if ([t isEqualToString: NSGeneralPboard])
79 if ([t isEqualToString: NXPrimaryPboard])
81 if ([t isEqualToString: NXSecondaryPboard])
83 if ([t isEqualToString: NSStringPboardType])
85 if ([t isEqualToString: NSFilenamesPboardType])
87 if ([t isEqualToString: NSTabularTextPboardType])
89 return intern ([t UTF8String]);
94 clean_local_selection_data (Lisp_Object obj)
97 && INTEGERP (XCAR (obj))
99 && INTEGERP (XCAR (XCDR (obj)))
100 && NILP (XCDR (XCDR (obj))))
101 obj = Fcons (XCAR (obj), XCDR (obj));
104 && INTEGERP (XCAR (obj))
105 && INTEGERP (XCDR (obj)))
107 if (XINT (XCAR (obj)) == 0)
109 if (XINT (XCAR (obj)) == -1)
110 return make_number (- XINT (XCDR (obj)));
116 int size = ASIZE (obj);
120 return clean_local_selection_data (AREF (obj, 0));
121 copy = Fmake_vector (make_number (size), Qnil);
122 for (i = 0; i < size; i++)
123 ASET (copy, i, clean_local_selection_data (AREF (obj, i)));
132 ns_declare_pasteboard (id pb)
134 [pb declareTypes: ns_send_types owner: NSApp];
139 ns_undeclare_pasteboard (id pb)
141 [pb declareTypes: [NSArray array] owner: nil];
146 ns_string_to_pasteboard_internal (id pb, Lisp_Object str, NSString *gtype)
150 [pb declareTypes: [NSArray array] owner: nil];
155 NSString *type, *nsStr;
160 utfStr = SDATA (str);
161 nsStr = [NSString stringWithUTF8String: utfStr];
165 [pb declareTypes: ns_send_types owner: nil];
166 tenum = [ns_send_types objectEnumerator];
167 while ( (type = [tenum nextObject]) )
168 [pb setString: nsStr forType: type];
172 [pb setString: nsStr forType: gtype];
179 ns_get_local_selection (Lisp_Object selection_name,
180 Lisp_Object target_type)
182 Lisp_Object local_value;
183 Lisp_Object handler_fn, value, type, check;
186 local_value = assq_no_quit (selection_name, Vselection_alist);
188 if (NILP (local_value)) return Qnil;
190 count = specpdl_ptr - specpdl;
191 specbind (Qinhibit_quit, Qt);
192 CHECK_SYMBOL (target_type);
193 handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist));
194 if (!NILP (handler_fn))
195 value = call3 (handler_fn, selection_name, target_type,
196 XCAR (XCDR (local_value)));
199 unbind_to (count, Qnil);
202 if (CONSP (value) && SYMBOLP (XCAR (value)))
205 check = XCDR (value);
208 if (STRINGP (check) || VECTORP (check) || SYMBOLP (check)
209 || INTEGERP (check) || NILP (value))
213 && INTEGERP (XCAR (check))
214 && (INTEGERP (XCDR (check))||
215 (CONSP (XCDR (check))
216 && INTEGERP (XCAR (XCDR (check)))
217 && NILP (XCDR (XCDR (check))))))
220 // FIXME: Why `quit' rather than `error'?
221 Fsignal (Qquit, Fcons (build_string (
222 "invalid data returned by selection-conversion function"),
223 Fcons (handler_fn, Fcons (value, Qnil))));
224 // FIXME: Beware, `quit' can return!!
230 ns_get_foreign_selection (Lisp_Object symbol, Lisp_Object target)
233 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (symbol)];
234 return ns_string_from_pasteboard (pb);
239 ns_handle_selection_request (struct input_event *event)
241 // FIXME: BIG UGLY HACK!!!
242 id pb = (id)*(EMACS_INT*)&(event->x);
243 NSString *type = (NSString *)*(EMACS_INT*)&(event->y);
244 Lisp_Object selection_name, selection_data, target_symbol, data;
245 Lisp_Object successful_p, rest;
247 selection_name = ns_string_to_symbol ([(NSPasteboard *)pb name]);
248 target_symbol = ns_string_to_symbol (type);
249 selection_data = assq_no_quit (selection_name, Vselection_alist);
252 if (!NILP (selection_data))
254 data = ns_get_local_selection (selection_name, target_symbol);
258 ns_string_to_pasteboard_internal (pb, data, type);
263 if (!EQ (Vns_sent_selection_hooks, Qunbound))
265 for (rest = Vns_sent_selection_hooks; CONSP (rest); rest = Fcdr (rest))
266 call3 (Fcar (rest), selection_name, target_symbol, successful_p);
272 ns_handle_selection_clear (struct input_event *event)
274 id pb = (id)*(EMACS_INT*)&(event->x);
275 Lisp_Object selection_name, selection_data, rest;
277 selection_name = ns_string_to_symbol ([(NSPasteboard *)pb name]);
278 selection_data = assq_no_quit (selection_name, Vselection_alist);
279 if (NILP (selection_data)) return;
281 if (EQ (selection_data, Fcar (Vselection_alist)))
282 Vselection_alist = Fcdr (Vselection_alist);
285 for (rest = Vselection_alist; !NILP (rest); rest = Fcdr (rest))
286 if (EQ (selection_data, Fcar (Fcdr (rest))))
287 Fsetcdr (rest, Fcdr (Fcdr (rest)));
290 if (!EQ (Vns_lost_selection_hooks, Qunbound))
292 for (rest = Vns_lost_selection_hooks;CONSP (rest); rest = Fcdr (rest))
293 call1 (Fcar (rest), selection_name);
299 /* ==========================================================================
301 Functions used externally
303 ========================================================================== */
307 ns_string_from_pasteboard (id pb)
309 NSString *type, *str;
312 type = [pb availableTypeFromArray: ns_return_types];
316 Fcons (build_string ("empty or unsupported pasteboard type"),
322 if (! (str = [pb stringForType: type]))
324 NSData *data = [pb dataForType: type];
326 str = [[NSString alloc] initWithData: data
327 encoding: NSUTF8StringEncoding];
335 Fcons (build_string ("pasteboard doesn't contain valid data"),
344 /* EOL conversion: PENDING- is this too simple? */
345 NSMutableString *mstr = [[str mutableCopy] autorelease];
346 [mstr replaceOccurrencesOfString: @"\r\n" withString: @"\n"
347 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
348 [mstr replaceOccurrencesOfString: @"\r" withString: @"\n"
349 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
351 utfStr = [mstr UTF8String];
353 utfStr = [mstr cString];
357 message1 ("ns_string_from_pasteboard: UTF8String failed\n");
358 utfStr = [str lossyCString];
362 return build_string (utfStr);
367 ns_string_to_pasteboard (id pb, Lisp_Object str)
369 ns_string_to_pasteboard_internal (pb, str, nil);
374 /* ==========================================================================
378 ========================================================================== */
381 DEFUN ("x-own-selection-internal", Fx_own_selection_internal,
382 Sx_own_selection_internal, 2, 2, 0,
383 doc: /* Assert a selection.
384 SELECTION-NAME is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
385 VALUE is typically a string, or a cons of two markers, but may be
386 anything that the functions on `selection-converter-alist' know about. */)
387 (Lisp_Object selection_name, Lisp_Object selection_value)
390 Lisp_Object old_value, new_value;
393 CHECK_SYMBOL (selection_name);
394 if (NILP (selection_value))
395 error ("selection-value may not be nil.");
396 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)];
397 ns_declare_pasteboard (pb);
398 old_value = assq_no_quit (selection_name, Vselection_alist);
399 new_value = Fcons (selection_name, Fcons (selection_value, Qnil));
400 if (NILP (old_value))
401 Vselection_alist = Fcons (new_value, Vselection_alist);
403 Fsetcdr (old_value, Fcdr (new_value));
404 /* XXX An evil hack, but a necessary one I fear XXX */
406 struct input_event ev;
407 ev.kind = SELECTION_REQUEST_EVENT;
410 *(EMACS_INT*)(&(ev.x)) = (EMACS_INT)pb; // FIXME: BIG UGLY HACK!!
411 *(EMACS_INT*)(&(ev.y)) = (EMACS_INT)NSStringPboardType;
412 ns_handle_selection_request (&ev);
414 return selection_value;
418 DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal,
419 Sx_disown_selection_internal, 1, 2, 0,
420 doc: /* If we own the selection SELECTION, disown it. */)
421 (Lisp_Object selection_name, Lisp_Object time)
425 CHECK_SYMBOL (selection_name);
426 if (NILP (assq_no_quit (selection_name, Vselection_alist))) return Qnil;
428 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection_name)];
429 ns_undeclare_pasteboard (pb);
434 DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
435 0, 1, 0, doc: /* Whether there is an owner for the given selection.
436 The arg should be the name of the selection in question, typically one of
437 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
438 \(Those are literal upper-case symbol names.)
439 For convenience, the symbol nil is the same as `PRIMARY',
440 and t is the same as `SECONDARY'.) */)
441 (Lisp_Object selection)
447 CHECK_SYMBOL (selection);
448 if (EQ (selection, Qnil)) selection = QPRIMARY;
449 if (EQ (selection, Qt)) selection = QSECONDARY;
450 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (selection)];
452 return ([types count] == 0) ? Qnil : Qt;
456 DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p,
458 doc: /* Whether the current Emacs process owns the given selection.
459 The arg should be the name of the selection in question, typically one of
460 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
461 \(Those are literal upper-case symbol names.)
462 For convenience, the symbol nil is the same as `PRIMARY',
463 and t is the same as `SECONDARY'.) */)
464 (Lisp_Object selection)
467 CHECK_SYMBOL (selection);
468 if (EQ (selection, Qnil)) selection = QPRIMARY;
469 if (EQ (selection, Qt)) selection = QSECONDARY;
470 return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt;
474 DEFUN ("x-get-selection-internal", Fx_get_selection_internal,
475 Sx_get_selection_internal, 2, 2, 0,
476 doc: /* Return text selected from some pasteboard.
477 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
478 \(Those are literal upper-case symbol names.)
479 TYPE is the type of data desired, typically `STRING'. */)
480 (Lisp_Object selection_name, Lisp_Object target_type)
485 CHECK_SYMBOL (selection_name);
486 CHECK_SYMBOL (target_type);
487 val = ns_get_local_selection (selection_name, target_type);
489 val = ns_get_foreign_selection (selection_name, target_type);
490 if (CONSP (val) && SYMBOLP (Fcar (val)))
493 if (CONSP (val) && NILP (Fcdr (val)))
496 val = clean_local_selection_data (val);
501 #ifdef CUT_BUFFER_SUPPORT
502 DEFUN ("ns-get-cut-buffer-internal", Fns_get_cut_buffer_internal,
503 Sns_get_cut_buffer_internal, 1, 1, 0,
504 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. */ )
521 /* XXX This function is unimplemented under NeXTstep XXX */
522 Fsignal (Qquit, Fcons (build_string (
523 "Warning: ns-rotate-cut-buffers-internal not implemented\n"), Qnil));
528 DEFUN ("ns-store-cut-buffer-internal", Fns_store_cut_buffer_internal,
529 Sns_store_cut_buffer_internal, 2, 2, 0,
530 doc: /* Sets the value of the named cut buffer (typically CUT_BUFFER0). */)
531 (Lisp_Object buffer, Lisp_Object string)
535 pb =[NSPasteboard pasteboardWithName: symbol_to_nsstring (buffer)];
536 ns_string_to_pasteboard (pb, string);
543 nxatoms_of_nsselect (void)
545 NXPrimaryPboard = @"Selection";
546 NXSecondaryPboard = @"Secondary";
550 syms_of_nsselect (void)
552 QCLIPBOARD = intern_c_string ("CLIPBOARD"); staticpro (&QCLIPBOARD);
553 QSECONDARY = intern_c_string ("SECONDARY"); staticpro (&QSECONDARY);
554 QTEXT = intern_c_string ("TEXT"); staticpro (&QTEXT);
555 QFILE_NAME = intern_c_string ("FILE_NAME"); staticpro (&QFILE_NAME);
557 defsubr (&Sx_disown_selection_internal);
558 defsubr (&Sx_get_selection_internal);
559 defsubr (&Sx_own_selection_internal);
560 defsubr (&Sx_selection_exists_p);
561 defsubr (&Sx_selection_owner_p);
562 #ifdef CUT_BUFFER_SUPPORT
563 defsubr (&Sns_get_cut_buffer_internal);
564 defsubr (&Sns_rotate_cut_buffers_internal);
565 defsubr (&Sns_store_cut_buffer_internal);
568 Vselection_alist = Qnil;
569 staticpro (&Vselection_alist);
571 DEFVAR_LISP ("ns-sent-selection-hooks", &Vns_sent_selection_hooks,
572 "A list of functions to be called when Emacs answers a selection request.\n\
573 The functions are called with four arguments:\n\
574 - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
575 - the selection-type which Emacs was asked to convert the\n\
576 selection into before sending (for example, `STRING' or `LENGTH');\n\
577 - a flag indicating success or failure for responding to the request.\n\
578 We might have failed (and declined the request) for any number of reasons,\n\
579 including being asked for a selection that we no longer own, or being asked\n\
580 to convert into a type that we don't know about or that is inappropriate.\n\
581 This hook doesn't let you change the behavior of Emacs's selection replies,\n\
582 it merely informs you that they have happened.");
583 Vns_sent_selection_hooks = Qnil;
585 DEFVAR_LISP ("selection-converter-alist", &Vselection_converter_alist,
586 "An alist associating X Windows selection-types with functions.\n\
587 These functions are called to convert the selection, with three args:\n\
588 the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
589 a desired type to which the selection should be converted;\n\
590 and the local selection value (whatever was given to `x-own-selection').\n\
592 The function should return the value to send to the X server\n\
593 \(typically a string). A return value of nil\n\
594 means that the conversion could not be done.\n\
595 A return value which is the symbol `NULL'\n\
596 means that a side-effect was executed,\n\
597 and there is no meaningful selection value.");
598 Vselection_converter_alist = Qnil;
600 DEFVAR_LISP ("ns-lost-selection-hooks", &Vns_lost_selection_hooks,
601 "A list of functions to be called when Emacs loses an X selection.\n\
602 \(This happens when some other X client makes its own selection\n\
603 or when a Lisp program explicitly clears the selection.)\n\
604 The functions are called with one argument, the selection type\n\
605 \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD').");
606 Vns_lost_selection_hooks = Qnil;
608 Qforeign_selection = intern_c_string ("foreign-selection");
609 staticpro (&Qforeign_selection);
612 // arch-tag: 39d1dde7-06a6-49ff-95a7-0e7af12d2218