1 /* NeXT/Open/GNUstep / MacOSX Cocoa selection processing for emacs.
2 Copyright (C) 1993-1994, 2005-2006, 2008-2012
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 Lisp_Object QCLIPBOARD, QSECONDARY, QTEXT, QFILE_NAME;
40 static Lisp_Object Vselection_alist;
42 static Lisp_Object Qforeign_selection;
44 /* NSGeneralPboard is pretty much analogous to X11 CLIPBOARD */
45 NSString *NXPrimaryPboard;
46 NSString *NXSecondaryPboard;
50 /* ==========================================================================
52 Internal utility functions
54 ========================================================================== */
58 symbol_to_nsstring (Lisp_Object sym)
61 if (EQ (sym, QCLIPBOARD)) return NSGeneralPboard;
62 if (EQ (sym, QPRIMARY)) return NXPrimaryPboard;
63 if (EQ (sym, QSECONDARY)) return NXSecondaryPboard;
64 if (EQ (sym, QTEXT)) return NSStringPboardType;
65 return [NSString stringWithUTF8String: SDATA (XSYMBOL (sym)->xname)];
69 ns_symbol_to_pb (Lisp_Object symbol)
71 return [NSPasteboard pasteboardWithName: symbol_to_nsstring (symbol)];
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 ptrdiff_t 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 alloc] initWithBytesNoCopy: utfStr
163 encoding: NSUTF8StringEncoding
167 [pb declareTypes: ns_send_types owner: nil];
168 tenum = [ns_send_types objectEnumerator];
169 while ( (type = [tenum nextObject]) )
170 [pb setString: nsStr forType: type];
174 [pb setString: nsStr forType: gtype];
182 ns_get_local_selection (Lisp_Object selection_name,
183 Lisp_Object target_type)
185 Lisp_Object local_value;
186 Lisp_Object handler_fn, value, type, check;
189 local_value = assq_no_quit (selection_name, Vselection_alist);
191 if (NILP (local_value)) return Qnil;
193 count = specpdl_ptr - specpdl;
194 specbind (Qinhibit_quit, Qt);
195 CHECK_SYMBOL (target_type);
196 handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist));
197 if (!NILP (handler_fn))
198 value = call3 (handler_fn, selection_name, target_type,
199 XCAR (XCDR (local_value)));
202 unbind_to (count, Qnil);
205 if (CONSP (value) && SYMBOLP (XCAR (value)))
208 check = XCDR (value);
211 if (STRINGP (check) || VECTORP (check) || SYMBOLP (check)
212 || INTEGERP (check) || NILP (value))
216 && INTEGERP (XCAR (check))
217 && (INTEGERP (XCDR (check))||
218 (CONSP (XCDR (check))
219 && INTEGERP (XCAR (XCDR (check)))
220 && NILP (XCDR (XCDR (check))))))
223 // FIXME: Why `quit' rather than `error'?
224 Fsignal (Qquit, Fcons (build_string (
225 "invalid data returned by selection-conversion function"),
226 Fcons (handler_fn, Fcons (value, Qnil))));
227 // FIXME: Beware, `quit' can return!!
233 ns_get_foreign_selection (Lisp_Object symbol, Lisp_Object target)
236 pb = ns_symbol_to_pb (symbol);
237 return pb != nil ? ns_string_from_pasteboard (pb) : Qnil;
243 /* ==========================================================================
245 Functions used externally
247 ========================================================================== */
251 ns_string_from_pasteboard (id pb)
253 NSString *type, *str;
257 type = [pb availableTypeFromArray: ns_return_types];
261 Fcons (build_string ("empty or unsupported pasteboard type"),
267 if (! (str = [pb stringForType: type]))
269 NSData *data = [pb dataForType: type];
271 str = [[NSString alloc] initWithData: data
272 encoding: NSUTF8StringEncoding];
280 Fcons (build_string ("pasteboard doesn't contain valid data"),
289 /* EOL conversion: PENDING- is this too simple? */
290 NSMutableString *mstr = [[str mutableCopy] autorelease];
291 [mstr replaceOccurrencesOfString: @"\r\n" withString: @"\n"
292 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
293 [mstr replaceOccurrencesOfString: @"\r" withString: @"\n"
294 options: NSLiteralSearch range: NSMakeRange (0, [mstr length])];
296 utfStr = [mstr UTF8String];
297 length = [mstr lengthOfBytesUsingEncoding: NSUTF8StringEncoding];
299 #if ! defined (NS_IMPL_COCOA) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_4
302 utfStr = [mstr cString];
303 length = strlen (utfStr);
309 message1 ("ns_string_from_pasteboard: UTF8String failed\n");
310 #if defined (NS_IMPL_COCOA) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
311 utfStr = "Conversion failed";
313 utfStr = [str lossyCString];
315 length = strlen (utfStr);
319 return make_string (utfStr, length);
324 ns_string_to_pasteboard (id pb, Lisp_Object str)
326 ns_string_to_pasteboard_internal (pb, str, nil);
331 /* ==========================================================================
335 ========================================================================== */
338 DEFUN ("x-own-selection-internal", Fx_own_selection_internal,
339 Sx_own_selection_internal, 2, 3, 0,
340 doc: /* Assert an X selection of type SELECTION and value VALUE.
341 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
342 \(Those are literal upper-case symbol names, since that's what X expects.)
343 VALUE is typically a string, or a cons of two markers, but may be
344 anything that the functions on `selection-converter-alist' know about.
346 FRAME should be a frame that should own the selection. If omitted or
347 nil, it defaults to the selected frame.
349 On Nextstep, FRAME is unused. */)
350 (Lisp_Object selection, Lisp_Object value, Lisp_Object frame)
353 Lisp_Object old_value, new_value;
355 Lisp_Object successful_p = Qnil, rest;
356 Lisp_Object target_symbol, data;
360 CHECK_SYMBOL (selection);
362 error ("selection value may not be nil.");
363 pb = ns_symbol_to_pb (selection);
364 if (pb == nil) return Qnil;
366 ns_declare_pasteboard (pb);
367 old_value = assq_no_quit (selection, Vselection_alist);
368 new_value = Fcons (selection, Fcons (value, Qnil));
370 if (NILP (old_value))
371 Vselection_alist = Fcons (new_value, Vselection_alist);
373 Fsetcdr (old_value, Fcdr (new_value));
375 /* We only support copy of text. */
376 type = NSStringPboardType;
377 target_symbol = ns_string_to_symbol (type);
378 data = ns_get_local_selection (selection, target_symbol);
382 ns_string_to_pasteboard_internal (pb, data, type);
386 if (!EQ (Vns_sent_selection_hooks, Qunbound))
388 for (rest = Vns_sent_selection_hooks; CONSP (rest); rest = Fcdr (rest))
389 call3 (Fcar (rest), selection, target_symbol, successful_p);
396 DEFUN ("x-disown-selection-internal", Fx_disown_selection_internal,
397 Sx_disown_selection_internal, 1, 3, 0,
398 doc: /* If we own the selection SELECTION, disown it.
399 Disowning it means there is no such selection.
401 Sets the last-change time for the selection to TIME-OBJECT (by default
402 the time of the last event).
404 TERMINAL should be a terminal object or a frame specifying the X
405 server to query. If omitted or nil, that stands for the selected
406 frame's display, or the first available X display.
408 On Nextstep, the TIME-OBJECT and TERMINAL arguments are unused.
409 On MS-DOS, all this does is return non-nil if we own the selection. */)
410 (Lisp_Object selection, Lisp_Object time_object, Lisp_Object terminal)
414 CHECK_SYMBOL (selection);
415 if (NILP (assq_no_quit (selection, Vselection_alist))) return Qnil;
417 pb = ns_symbol_to_pb (selection);
418 if (pb != nil) ns_undeclare_pasteboard (pb);
423 DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
424 0, 2, 0, doc: /* Whether there is an owner for the given X selection.
425 SELECTION should be the name of the selection in question, typically
426 one of the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. (X expects
427 these literal upper-case names.) The symbol nil is the same as
428 `PRIMARY', and t is the same as `SECONDARY'.
430 TERMINAL should be a terminal object or a frame specifying the X
431 server to query. If omitted or nil, that stands for the selected
432 frame's display, or the first available X display.
434 On Nextstep, TERMINAL is unused. */)
435 (Lisp_Object selection, Lisp_Object terminal)
441 CHECK_SYMBOL (selection);
442 if (EQ (selection, Qnil)) selection = QPRIMARY;
443 if (EQ (selection, Qt)) selection = QSECONDARY;
444 pb = ns_symbol_to_pb (selection);
445 if (pb == nil) return Qnil;
448 return ([types count] == 0) ? Qnil : Qt;
452 DEFUN ("x-selection-owner-p", Fx_selection_owner_p, Sx_selection_owner_p,
454 doc: /* Whether the current Emacs process owns the given X Selection.
455 The arg should be the name of the selection in question, typically one of
456 the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
457 \(Those are literal upper-case symbol names, since that's what X expects.)
458 For convenience, the symbol nil is the same as `PRIMARY',
459 and t is the same as `SECONDARY'.
461 TERMINAL should be a terminal object or a frame specifying the X
462 server to query. If omitted or nil, that stands for the selected
463 frame's display, or the first available X display.
465 On Nextstep, TERMINAL is unused. */)
466 (Lisp_Object selection, Lisp_Object terminal)
469 CHECK_SYMBOL (selection);
470 if (EQ (selection, Qnil)) selection = QPRIMARY;
471 if (EQ (selection, Qt)) selection = QSECONDARY;
472 return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt;
476 DEFUN ("x-get-selection-internal", Fx_get_selection_internal,
477 Sx_get_selection_internal, 2, 4, 0,
478 doc: /* Return text selected from some X window.
479 SELECTION-SYMBOL is typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
480 \(Those are literal upper-case symbol names, since that's what X expects.)
481 TARGET-TYPE is the type of data desired, typically `STRING'.
483 TIME-STAMP is the time to use in the XConvertSelection call for foreign
484 selections. If omitted, defaults to the time for the last event.
486 TERMINAL should be a terminal object or a frame specifying the X
487 server to query. If omitted or nil, that stands for the selected
488 frame's display, or the first available X display.
490 On Nextstep, TIME-STAMP and TERMINAL are unused. */)
491 (Lisp_Object selection_name, Lisp_Object target_type,
492 Lisp_Object time_stamp, Lisp_Object terminal)
497 CHECK_SYMBOL (selection_name);
498 CHECK_SYMBOL (target_type);
499 val = ns_get_local_selection (selection_name, target_type);
501 val = ns_get_foreign_selection (selection_name, target_type);
502 if (CONSP (val) && SYMBOLP (Fcar (val)))
505 if (CONSP (val) && NILP (Fcdr (val)))
508 val = clean_local_selection_data (val);
513 DEFUN ("ns-get-selection-internal", Fns_get_selection_internal,
514 Sns_get_selection_internal, 1, 1, 0,
515 doc: /* Returns the value of SELECTION as a string.
516 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
517 (Lisp_Object selection)
521 pb = ns_symbol_to_pb (selection);
522 return pb != nil ? ns_string_from_pasteboard (pb) : Qnil;
526 DEFUN ("ns-store-selection-internal", Fns_store_selection_internal,
527 Sns_store_selection_internal, 2, 2, 0,
528 doc: /* Sets the string value of SELECTION.
529 SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
530 (Lisp_Object selection, Lisp_Object string)
534 pb = ns_symbol_to_pb (selection);
535 if (pb != nil) ns_string_to_pasteboard (pb, string);
541 nxatoms_of_nsselect (void)
543 NXPrimaryPboard = @"Selection";
544 NXSecondaryPboard = @"Secondary";
548 syms_of_nsselect (void)
550 QCLIPBOARD = intern_c_string ("CLIPBOARD"); staticpro (&QCLIPBOARD);
551 QSECONDARY = intern_c_string ("SECONDARY"); staticpro (&QSECONDARY);
552 QTEXT = intern_c_string ("TEXT"); staticpro (&QTEXT);
553 QFILE_NAME = intern_c_string ("FILE_NAME"); staticpro (&QFILE_NAME);
555 defsubr (&Sx_disown_selection_internal);
556 defsubr (&Sx_get_selection_internal);
557 defsubr (&Sx_own_selection_internal);
558 defsubr (&Sx_selection_exists_p);
559 defsubr (&Sx_selection_owner_p);
560 defsubr (&Sns_get_selection_internal);
561 defsubr (&Sns_store_selection_internal);
563 Vselection_alist = Qnil;
564 staticpro (&Vselection_alist);
566 DEFVAR_LISP ("ns-sent-selection-hooks", Vns_sent_selection_hooks,
567 "A list of functions to be called when Emacs answers a selection request.\n\
568 The functions are called with four arguments:\n\
569 - the selection name (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
570 - the selection-type which Emacs was asked to convert the\n\
571 selection into before sending (for example, `STRING' or `LENGTH');\n\
572 - a flag indicating success or failure for responding to the request.\n\
573 We might have failed (and declined the request) for any number of reasons,\n\
574 including being asked for a selection that we no longer own, or being asked\n\
575 to convert into a type that we don't know about or that is inappropriate.\n\
576 This hook doesn't let you change the behavior of Emacs's selection replies,\n\
577 it merely informs you that they have happened.");
578 Vns_sent_selection_hooks = Qnil;
580 DEFVAR_LISP ("selection-converter-alist", Vselection_converter_alist,
581 "An alist associating X Windows selection-types with functions.\n\
582 These functions are called to convert the selection, with three args:\n\
583 the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
584 a desired type to which the selection should be converted;\n\
585 and the local selection value (whatever was given to `x-own-selection').\n\
587 The function should return the value to send to the X server\n\
588 \(typically a string). A return value of nil\n\
589 means that the conversion could not be done.\n\
590 A return value which is the symbol `NULL'\n\
591 means that a side-effect was executed,\n\
592 and there is no meaningful selection value.");
593 Vselection_converter_alist = Qnil;
595 DEFVAR_LISP ("ns-lost-selection-hooks", Vns_lost_selection_hooks,
596 "A list of functions to be called when Emacs loses an X selection.\n\
597 \(This happens when some other X client makes its own selection\n\
598 or when a Lisp program explicitly clears the selection.)\n\
599 The functions are called with one argument, the selection type\n\
600 \(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD').");
601 Vns_lost_selection_hooks = Qnil;
603 Qforeign_selection = intern_c_string ("foreign-selection");
604 staticpro (&Qforeign_selection);