1 /* NeXT/Open/GNUstep / MacOSX Cocoa selection processing for emacs.
2 Copyright (C) 1993-1994, 2005-2006, 2008-2013 Free Software
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. */
34 #include "termhooks.h"
37 Lisp_Object QCLIPBOARD, QSECONDARY, QTEXT, QFILE_NAME;
39 static Lisp_Object Vselection_alist;
41 static Lisp_Object Qforeign_selection;
43 /* NSGeneralPboard is pretty much analogous to X11 CLIPBOARD */
44 NSString *NXPrimaryPboard;
45 NSString *NXSecondaryPboard;
49 /* ==========================================================================
51 Internal utility functions
53 ========================================================================== */
57 symbol_to_nsstring (Lisp_Object sym)
60 if (EQ (sym, QCLIPBOARD)) return NSGeneralPboard;
61 if (EQ (sym, QPRIMARY)) return NXPrimaryPboard;
62 if (EQ (sym, QSECONDARY)) return NXSecondaryPboard;
63 if (EQ (sym, QTEXT)) return NSStringPboardType;
64 return [NSString stringWithUTF8String: SSDATA (SYMBOL_NAME (sym))];
68 ns_symbol_to_pb (Lisp_Object symbol)
70 return [NSPasteboard pasteboardWithName: symbol_to_nsstring (symbol)];
74 ns_string_to_symbol (NSString *t)
76 if ([t isEqualToString: NSGeneralPboard])
78 if ([t isEqualToString: NXPrimaryPboard])
80 if ([t isEqualToString: NXSecondaryPboard])
82 if ([t isEqualToString: NSStringPboardType])
84 if ([t isEqualToString: NSFilenamesPboardType])
86 if ([t isEqualToString: NSTabularTextPboardType])
88 return intern ([t UTF8String]);
93 clean_local_selection_data (Lisp_Object obj)
96 && INTEGERP (XCAR (obj))
98 && INTEGERP (XCAR (XCDR (obj)))
99 && NILP (XCDR (XCDR (obj))))
100 obj = Fcons (XCAR (obj), XCDR (obj));
103 && INTEGERP (XCAR (obj))
104 && INTEGERP (XCDR (obj)))
106 if (XINT (XCAR (obj)) == 0)
108 if (XINT (XCAR (obj)) == -1)
109 return make_number (- XINT (XCDR (obj)));
115 ptrdiff_t size = ASIZE (obj);
119 return clean_local_selection_data (AREF (obj, 0));
120 copy = make_uninit_vector (size);
121 for (i = 0; i < size; i++)
122 ASET (copy, i, clean_local_selection_data (AREF (obj, i)));
131 ns_declare_pasteboard (id pb)
133 [pb declareTypes: ns_send_types owner: NSApp];
138 ns_undeclare_pasteboard (id pb)
140 [pb declareTypes: [NSArray array] owner: nil];
145 ns_string_to_pasteboard_internal (id pb, Lisp_Object str, NSString *gtype)
149 [pb declareTypes: [NSArray array] owner: nil];
154 NSString *type, *nsStr;
159 utfStr = SSDATA (str);
160 nsStr = [[NSString alloc] initWithBytesNoCopy: utfStr
162 encoding: NSUTF8StringEncoding
166 [pb declareTypes: ns_send_types owner: nil];
167 tenum = [ns_send_types objectEnumerator];
168 while ( (type = [tenum nextObject]) )
169 [pb setString: nsStr forType: type];
173 [pb setString: nsStr forType: gtype];
181 ns_get_local_selection (Lisp_Object selection_name,
182 Lisp_Object target_type)
184 Lisp_Object local_value;
185 Lisp_Object handler_fn, value, check;
188 local_value = assq_no_quit (selection_name, Vselection_alist);
190 if (NILP (local_value)) return Qnil;
192 count = specpdl_ptr - specpdl;
193 specbind (Qinhibit_quit, Qt);
194 CHECK_SYMBOL (target_type);
195 handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist));
196 if (!NILP (handler_fn))
197 value = call3 (handler_fn, selection_name, target_type,
198 XCAR (XCDR (local_value)));
201 unbind_to (count, Qnil);
204 if (CONSP (value) && SYMBOLP (XCAR (value)))
206 check = XCDR (value);
209 if (STRINGP (check) || VECTORP (check) || SYMBOLP (check)
210 || INTEGERP (check) || NILP (value))
214 && INTEGERP (XCAR (check))
215 && (INTEGERP (XCDR (check))||
216 (CONSP (XCDR (check))
217 && INTEGERP (XCAR (XCDR (check)))
218 && NILP (XCDR (XCDR (check))))))
221 // FIXME: Why `quit' rather than `error'?
223 list3 (build_string ("invalid data returned by"
224 " selection-conversion function"),
226 // FIXME: Beware, `quit' can return!!
232 ns_get_foreign_selection (Lisp_Object symbol, Lisp_Object target)
235 pb = ns_symbol_to_pb (symbol);
236 return pb != nil ? ns_string_from_pasteboard (pb) : Qnil;
242 /* ==========================================================================
244 Functions used externally
246 ========================================================================== */
250 ns_string_from_pasteboard (id pb)
252 NSString *type, *str;
256 type = [pb availableTypeFromArray: ns_return_types];
260 list1 (build_string ("empty or unsupported pasteboard type")));
265 if (! (str = [pb stringForType: type]))
267 NSData *data = [pb dataForType: type];
269 str = [[NSString alloc] initWithData: data
270 encoding: NSUTF8StringEncoding];
278 list1 (build_string ("pasteboard doesn't contain"
287 /* EOL conversion: PENDING- is this too simple? */
288 NSMutableString *mstr = [[str mutableCopy] autorelease];
289 [mstr replaceOccurrencesOfString: @"\r\n" withString: @"\n"
290 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
291 [mstr replaceOccurrencesOfString: @"\r" withString: @"\n"
292 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
294 utfStr = [mstr UTF8String];
295 length = [mstr lengthOfBytesUsingEncoding: NSUTF8StringEncoding];
297 #if ! defined (NS_IMPL_COCOA)
300 utfStr = [mstr cString];
301 length = strlen (utfStr);
307 message1 ("ns_string_from_pasteboard: UTF8String failed\n");
308 #if defined (NS_IMPL_COCOA)
309 utfStr = "Conversion failed";
311 utfStr = [str lossyCString];
313 length = strlen (utfStr);
317 return make_string (utfStr, length);
322 ns_string_to_pasteboard (id pb, Lisp_Object str)
324 ns_string_to_pasteboard_internal (pb, str, nil);
329 /* ==========================================================================
333 ========================================================================== */
336 DEFUN ("x-own-selection-internal", Fx_own_selection_internal,
337 Sx_own_selection_internal, 2, 3, 0,
338 doc: /* Assert an X selection of type SELECTION and value VALUE.
339 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
340 \(Those are literal upper-case symbol names, since that's what X expects.)
341 VALUE is typically a string, or a cons of two markers, but may be
342 anything that the functions on `selection-converter-alist' know about.
344 FRAME should be a frame that should own the selection. If omitted or
345 nil, it defaults to the selected frame.
347 On Nextstep, FRAME is unused. */)
348 (Lisp_Object selection, Lisp_Object value, Lisp_Object frame)
351 Lisp_Object old_value, new_value;
353 Lisp_Object successful_p = Qnil, rest;
354 Lisp_Object target_symbol, data;
356 check_window_system (NULL);
357 CHECK_SYMBOL (selection);
359 error ("selection value may not be nil.");
360 pb = ns_symbol_to_pb (selection);
361 if (pb == nil) return Qnil;
363 ns_declare_pasteboard (pb);
364 old_value = assq_no_quit (selection, Vselection_alist);
365 new_value = list2 (selection, value);
367 if (NILP (old_value))
368 Vselection_alist = Fcons (new_value, Vselection_alist);
370 Fsetcdr (old_value, Fcdr (new_value));
372 /* We only support copy of text. */
373 type = NSStringPboardType;
374 target_symbol = ns_string_to_symbol (type);
375 data = ns_get_local_selection (selection, target_symbol);
379 ns_string_to_pasteboard_internal (pb, data, type);
383 if (!EQ (Vns_sent_selection_hooks, Qunbound))
385 for (rest = Vns_sent_selection_hooks; CONSP (rest); rest = Fcdr (rest))
386 call3 (Fcar (rest), selection, target_symbol, successful_p);
393 DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal,
394 Sx_disown_selection_internal, 1, 3, 0,
395 doc: /* If we own the selection SELECTION, disown it.
396 Disowning it means there is no such selection.
398 Sets the last-change time for the selection to TIME-OBJECT (by default
399 the time of the last event).
401 TERMINAL should be a terminal object or a frame specifying the X
402 server to query. If omitted or nil, that stands for the selected
403 frame's display, or the first available X display.
405 On Nextstep, the TIME-OBJECT and TERMINAL arguments are unused.
406 On MS-DOS, all this does is return non-nil if we own the selection. */)
407 (Lisp_Object selection, Lisp_Object time_object, Lisp_Object terminal)
410 check_window_system (NULL);
411 CHECK_SYMBOL (selection);
412 if (NILP (assq_no_quit (selection, Vselection_alist))) return Qnil;
414 pb = ns_symbol_to_pb (selection);
415 if (pb != nil) ns_undeclare_pasteboard (pb);
420 DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
421 0, 2, 0, doc: /* Whether there is an owner for the given X selection.
422 SELECTION should be the name of the selection in question, typically
423 one of the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. (X expects
424 these literal upper-case names.) The symbol nil is the same as
425 `PRIMARY', and t is the same as `SECONDARY'.
427 TERMINAL should be a terminal object or a frame specifying the X
428 server to query. If omitted or nil, that stands for the selected
429 frame's display, or the first available X display.
431 On Nextstep, TERMINAL is unused. */)
432 (Lisp_Object selection, Lisp_Object terminal)
437 check_window_system (NULL);
438 CHECK_SYMBOL (selection);
439 if (EQ (selection, Qnil)) selection = QPRIMARY;
440 if (EQ (selection, Qt)) selection = QSECONDARY;
441 pb = ns_symbol_to_pb (selection);
442 if (pb == nil) return Qnil;
445 return ([types count] == 0) ? Qnil : Qt;
449 DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p,
451 doc: /* Whether the current Emacs process owns the given X Selection.
452 The arg should be the name of the selection in question, typically one of
453 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
454 \(Those are literal upper-case symbol names, since that's what X expects.)
455 For convenience, the symbol nil is the same as `PRIMARY',
456 and t is the same as `SECONDARY'.
458 TERMINAL should be a terminal object or a frame specifying the X
459 server to query. If omitted or nil, that stands for the selected
460 frame's display, or the first available X display.
462 On Nextstep, TERMINAL is unused. */)
463 (Lisp_Object selection, Lisp_Object terminal)
465 check_window_system (NULL);
466 CHECK_SYMBOL (selection);
467 if (EQ (selection, Qnil)) selection = QPRIMARY;
468 if (EQ (selection, Qt)) selection = QSECONDARY;
469 return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt;
473 DEFUN ("x-get-selection-internal", Fx_get_selection_internal,
474 Sx_get_selection_internal, 2, 4, 0,
475 doc: /* Return text selected from some X window.
476 SELECTION-SYMBOL is typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
477 \(Those are literal upper-case symbol names, since that's what X expects.)
478 TARGET-TYPE is the type of data desired, typically `STRING'.
480 TIME-STAMP is the time to use in the XConvertSelection call for foreign
481 selections. If omitted, defaults to the time for the last event.
483 TERMINAL should be a terminal object or a frame specifying the X
484 server to query. If omitted or nil, that stands for the selected
485 frame's display, or the first available X display.
487 On Nextstep, TIME-STAMP and TERMINAL are unused. */)
488 (Lisp_Object selection_name, Lisp_Object target_type,
489 Lisp_Object time_stamp, Lisp_Object terminal)
493 check_window_system (NULL);
494 CHECK_SYMBOL (selection_name);
495 CHECK_SYMBOL (target_type);
496 val = ns_get_local_selection (selection_name, target_type);
498 val = ns_get_foreign_selection (selection_name, target_type);
499 if (CONSP (val) && SYMBOLP (Fcar (val)))
502 if (CONSP (val) && NILP (Fcdr (val)))
505 val = clean_local_selection_data (val);
510 DEFUN ("ns-get-selection-internal", Fns_get_selection_internal,
511 Sns_get_selection_internal, 1, 1, 0,
512 doc: /* Returns the value of SELECTION as a string.
513 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
514 (Lisp_Object selection)
517 check_window_system (NULL);
518 pb = ns_symbol_to_pb (selection);
519 return pb != nil ? ns_string_from_pasteboard (pb) : Qnil;
523 DEFUN ("ns-store-selection-internal", Fns_store_selection_internal,
524 Sns_store_selection_internal, 2, 2, 0,
525 doc: /* Sets the string value of SELECTION.
526 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
527 (Lisp_Object selection, Lisp_Object string)
530 check_window_system (NULL);
531 pb = ns_symbol_to_pb (selection);
532 if (pb != nil) ns_string_to_pasteboard (pb, string);
538 nxatoms_of_nsselect (void)
540 NXPrimaryPboard = @"Selection";
541 NXSecondaryPboard = @"Secondary";
545 syms_of_nsselect (void)
547 QCLIPBOARD = intern_c_string ("CLIPBOARD"); staticpro (&QCLIPBOARD);
548 QSECONDARY = intern_c_string ("SECONDARY"); staticpro (&QSECONDARY);
549 QTEXT = intern_c_string ("TEXT"); staticpro (&QTEXT);
550 QFILE_NAME = intern_c_string ("FILE_NAME"); staticpro (&QFILE_NAME);
552 defsubr (&Sx_disown_selection_internal);
553 defsubr (&Sx_get_selection_internal);
554 defsubr (&Sx_own_selection_internal);
555 defsubr (&Sx_selection_exists_p);
556 defsubr (&Sx_selection_owner_p);
557 defsubr (&Sns_get_selection_internal);
558 defsubr (&Sns_store_selection_internal);
560 Vselection_alist = Qnil;
561 staticpro (&Vselection_alist);
563 DEFVAR_LISP ("ns-sent-selection-hooks", Vns_sent_selection_hooks,
564 "A list of functions to be called when Emacs answers a selection request.\n\
565 The functions are called with four arguments:\n\
566 - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
567 - the selection-type which Emacs was asked to convert the\n\
568 selection into before sending (for example, `STRING' or `LENGTH');\n\
569 - a flag indicating success or failure for responding to the request.\n\
570 We might have failed (and declined the request) for any number of reasons,\n\
571 including being asked for a selection that we no longer own, or being asked\n\
572 to convert into a type that we don't know about or that is inappropriate.\n\
573 This hook doesn't let you change the behavior of Emacs's selection replies,\n\
574 it merely informs you that they have happened.");
575 Vns_sent_selection_hooks = Qnil;
577 DEFVAR_LISP ("selection-converter-alist", Vselection_converter_alist,
578 "An alist associating X Windows selection-types with functions.\n\
579 These functions are called to convert the selection, with three args:\n\
580 the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
581 a desired type to which the selection should be converted;\n\
582 and the local selection value (whatever was given to `x-own-selection').\n\
584 The function should return the value to send to the X server\n\
585 \(typically a string). A return value of nil\n\
586 means that the conversion could not be done.\n\
587 A return value which is the symbol `NULL'\n\
588 means that a side-effect was executed,\n\
589 and there is no meaningful selection value.");
590 Vselection_converter_alist = Qnil;
592 DEFVAR_LISP ("ns-lost-selection-hooks", Vns_lost_selection_hooks,
593 "A list of functions to be called when Emacs loses an X selection.\n\
594 \(This happens when some other X client makes its own selection\n\
595 or when a Lisp program explicitly clears the selection.)\n\
596 The functions are called with one argument, the selection type\n\
597 \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD').");
598 Vns_lost_selection_hooks = Qnil;
600 Qforeign_selection = intern_c_string ("foreign-selection");
601 staticpro (&Qforeign_selection);