/* NeXT/Open/GNUstep / MacOSX Cocoa selection processing for emacs.
- Copyright (C) 1993-1994, 2005-2006, 2008-2014 Free Software
+ Copyright (C) 1993-1994, 2005-2006, 2008-2015 Free Software
Foundation, Inc.
This file is part of GNU Emacs.
*/
/* This should be the first include, as it may set up #defines affecting
- interpretation of even the system includes. */
+ interpretation of even the system includes. */
#include <config.h>
#include "lisp.h"
#include "termhooks.h"
#include "keyboard.h"
-Lisp_Object QCLIPBOARD, QSECONDARY, QTEXT, QFILE_NAME;
-
static Lisp_Object Vselection_alist;
-static Lisp_Object Qforeign_selection;
-
/* NSGeneralPboard is pretty much analogous to X11 CLIPBOARD */
-NSString *NXPrimaryPboard;
-NSString *NXSecondaryPboard;
+static NSString *NXPrimaryPboard;
+static NSString *NXSecondaryPboard;
+static NSMutableDictionary *pasteboard_changecount;
/* ==========================================================================
[pb declareTypes: [NSArray array] owner: nil];
}
+static void
+ns_store_pb_change_count (id pb)
+{
+ [pasteboard_changecount
+ setObject: [NSNumber numberWithLong: [pb changeCount]]
+ forKey: [pb name]];
+}
+
+static NSInteger
+ns_get_pb_change_count (Lisp_Object selection)
+{
+ id pb = ns_symbol_to_pb (selection);
+ return pb != nil ? [pb changeCount] : -1;
+}
+
+static NSInteger
+ns_get_our_change_count_for (Lisp_Object selection)
+{
+ NSNumber *num = [pasteboard_changecount
+ objectForKey: symbol_to_nsstring (selection)];
+ return num != nil ? (NSInteger)[num longValue] : -1;
+}
+
static void
ns_string_to_pasteboard_internal (id pb, Lisp_Object str, NSString *gtype)
length: SBYTES (str)
encoding: NSUTF8StringEncoding
freeWhenDone: NO];
+ // FIXME: Why those 2 different code paths?
if (gtype == nil)
{
+ // Used for ns_string_to_pasteboard
[pb declareTypes: ns_send_types owner: nil];
tenum = [ns_send_types objectEnumerator];
while ( (type = [tenum nextObject]) )
}
else
{
+ // Used for ns-own-selection-internal.
+ eassert (gtype == NSStringPboardType);
[pb setString: nsStr forType: gtype];
}
[nsStr release];
+ ns_store_pb_change_count (pb);
}
}
Lisp_Object
ns_get_local_selection (Lisp_Object selection_name,
- Lisp_Object target_type)
+ Lisp_Object target_type)
{
Lisp_Object local_value;
- Lisp_Object handler_fn, value, check;
- ptrdiff_t count;
-
local_value = assq_no_quit (selection_name, Vselection_alist);
-
- if (NILP (local_value)) return Qnil;
-
- count = specpdl_ptr - specpdl;
- specbind (Qinhibit_quit, Qt);
- CHECK_SYMBOL (target_type);
- handler_fn = Fcdr (Fassq (target_type, Vselection_converter_alist));
- if (!NILP (handler_fn))
- value = call3 (handler_fn, selection_name, target_type,
- XCAR (XCDR (local_value)));
- else
- value = Qnil;
- unbind_to (count, Qnil);
-
- check = value;
- if (CONSP (value) && SYMBOLP (XCAR (value)))
- {
- check = XCDR (value);
- }
-
- if (STRINGP (check) || VECTORP (check) || SYMBOLP (check)
- || INTEGERP (check) || NILP (value))
- return value;
-
- if (CONSP (check)
- && INTEGERP (XCAR (check))
- && (INTEGERP (XCDR (check))||
- (CONSP (XCDR (check))
- && INTEGERP (XCAR (XCDR (check)))
- && NILP (XCDR (XCDR (check))))))
- return value;
-
- // FIXME: Why `quit' rather than `error'?
- Fsignal (Qquit,
- list3 (build_string ("invalid data returned by"
- " selection-conversion function"),
- handler_fn, value));
- // FIXME: Beware, `quit' can return!!
- return Qnil;
+ return local_value;
}
Sns_own_selection_internal, 2, 2, 0,
doc: /* Assert an X selection of type SELECTION and value VALUE.
SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
-\(Those are literal upper-case symbol names, since that's what X expects.)
+(Those are literal upper-case symbol names, since that's what X expects.)
VALUE is typically a string, or a cons of two markers, but may be
anything that the functions on `selection-converter-alist' know about. */)
(Lisp_Object selection, Lisp_Object value)
{
id pb;
- Lisp_Object old_value, new_value;
NSString *type;
Lisp_Object successful_p = Qnil, rest;
- Lisp_Object target_symbol, data;
+ Lisp_Object target_symbol;
check_window_system (NULL);
CHECK_SYMBOL (selection);
if (pb == nil) return Qnil;
ns_declare_pasteboard (pb);
- old_value = assq_no_quit (selection, Vselection_alist);
- new_value = list2 (selection, value);
+ {
+ Lisp_Object old_value = assq_no_quit (selection, Vselection_alist);
+ Lisp_Object new_value = list2 (selection, value);
- if (NILP (old_value))
- Vselection_alist = Fcons (new_value, Vselection_alist);
- else
- Fsetcdr (old_value, Fcdr (new_value));
+ if (NILP (old_value))
+ Vselection_alist = Fcons (new_value, Vselection_alist);
+ else
+ Fsetcdr (old_value, Fcdr (new_value));
+ }
/* We only support copy of text. */
type = NSStringPboardType;
target_symbol = ns_string_to_symbol (type);
- data = ns_get_local_selection (selection, target_symbol);
- if (!NILP (data))
+ if (STRINGP (value))
{
- if (STRINGP (data))
- ns_string_to_pasteboard_internal (pb, data, type);
+ ns_string_to_pasteboard_internal (pb, value, type);
successful_p = Qt;
}
if (!EQ (Vns_sent_selection_hooks, Qunbound))
{
+ /* FIXME: Use run-hook-with-args! */
for (rest = Vns_sent_selection_hooks; CONSP (rest); rest = Fcdr (rest))
call3 (Fcar (rest), selection, target_symbol, successful_p);
}
id pb;
check_window_system (NULL);
CHECK_SYMBOL (selection);
- if (NILP (assq_no_quit (selection, Vselection_alist))) return Qnil;
+
+ if (ns_get_pb_change_count (selection)
+ != ns_get_our_change_count_for (selection))
+ return Qnil;
pb = ns_symbol_to_pb (selection);
if (pb != nil) ns_undeclare_pasteboard (pb);
}
-DEFUN ("x-selection-exists-p", Fx_selection_exists_p, Sx_selection_exists_p,
- 0, 2, 0, doc: /* Whether there is an owner for the given X selection.
+DEFUN ("ns-selection-exists-p", Fns_selection_exists_p, Sns_selection_exists_p,
+ 0, 1, 0, doc: /* Whether there is an owner for the given X selection.
SELECTION should be the name of the selection in question, typically
one of the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'. (X expects
these literal upper-case names.) The symbol nil is the same as
-`PRIMARY', and t is the same as `SECONDARY'.
-
-TERMINAL should be a terminal object or a frame specifying the X
-server to query. If omitted or nil, that stands for the selected
-frame's display, or the first available X display.
-
-On Nextstep, TERMINAL is unused. */)
- (Lisp_Object selection, Lisp_Object terminal)
+`PRIMARY', and t is the same as `SECONDARY'. */)
+ (Lisp_Object selection)
{
id pb;
NSArray *types;
DEFUN ("ns-selection-owner-p", Fns_selection_owner_p, Sns_selection_owner_p,
- 0, 2, 0,
+ 0, 1, 0,
doc: /* Whether the current Emacs process owns the given X Selection.
The arg should be the name of the selection in question, typically one of
the symbols `PRIMARY', `SECONDARY', or `CLIPBOARD'.
-\(Those are literal upper-case symbol names, since that's what X expects.)
+(Those are literal upper-case symbol names, since that's what X expects.)
For convenience, the symbol nil is the same as `PRIMARY',
-and t is the same as `SECONDARY'.
-
-TERMINAL should be a terminal object or a frame specifying the X
-server to query. If omitted or nil, that stands for the selected
-frame's display, or the first available X display.
-
-On Nextstep, TERMINAL is unused. */)
- (Lisp_Object selection, Lisp_Object terminal)
+and t is the same as `SECONDARY'. */)
+ (Lisp_Object selection)
{
check_window_system (NULL);
CHECK_SYMBOL (selection);
if (EQ (selection, Qnil)) selection = QPRIMARY;
if (EQ (selection, Qt)) selection = QSECONDARY;
- return (NILP (Fassq (selection, Vselection_alist))) ? Qnil : Qt;
+ return ns_get_pb_change_count (selection)
+ == ns_get_our_change_count_for (selection)
+ ? Qt : Qnil;
}
-DEFUN ("x-get-selection-internal", Fx_get_selection_internal,
- Sx_get_selection_internal, 2, 4, 0,
+DEFUN ("ns-get-selection", Fns_get_selection,
+ Sns_get_selection, 2, 2, 0,
doc: /* Return text selected from some X window.
SELECTION-SYMBOL is typically `PRIMARY', `SECONDARY', or `CLIPBOARD'.
-\(Those are literal upper-case symbol names, since that's what X expects.)
-TARGET-TYPE is the type of data desired, typically `STRING'.
-
-TIME-STAMP is the time to use in the XConvertSelection call for foreign
-selections. If omitted, defaults to the time for the last event.
-
-TERMINAL should be a terminal object or a frame specifying the X
-server to query. If omitted or nil, that stands for the selected
-frame's display, or the first available X display.
-
-On Nextstep, TIME-STAMP and TERMINAL are unused. */)
- (Lisp_Object selection_name, Lisp_Object target_type,
- Lisp_Object time_stamp, Lisp_Object terminal)
+(Those are literal upper-case symbol names, since that's what X expects.)
+TARGET-TYPE is the type of data desired, typically `STRING'. */)
+ (Lisp_Object selection_name, Lisp_Object target_type)
{
- Lisp_Object val;
+ Lisp_Object val = Qnil;
check_window_system (NULL);
CHECK_SYMBOL (selection_name);
CHECK_SYMBOL (target_type);
- val = ns_get_local_selection (selection_name, target_type);
+
+ if (ns_get_pb_change_count (selection_name)
+ == ns_get_our_change_count_for (selection_name))
+ val = ns_get_local_selection (selection_name, target_type);
if (NILP (val))
val = ns_get_foreign_selection (selection_name, target_type);
if (CONSP (val) && SYMBOLP (Fcar (val)))
}
-DEFUN ("ns-get-selection-internal", Fns_get_selection_internal,
- Sns_get_selection_internal, 1, 1, 0,
- doc: /* Returns the value of SELECTION as a string.
-SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
- (Lisp_Object selection)
-{
- id pb;
- check_window_system (NULL);
- pb = ns_symbol_to_pb (selection);
- return pb != nil ? ns_string_from_pasteboard (pb) : Qnil;
-}
-
-
-DEFUN ("ns-store-selection-internal", Fns_store_selection_internal,
- Sns_store_selection_internal, 2, 2, 0,
- doc: /* Sets the string value of SELECTION.
-SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
- (Lisp_Object selection, Lisp_Object string)
-{
- id pb;
- check_window_system (NULL);
- pb = ns_symbol_to_pb (selection);
- if (pb != nil) ns_string_to_pasteboard (pb, string);
- return Qnil;
-}
-
-
void
nxatoms_of_nsselect (void)
{
NXPrimaryPboard = @"Selection";
NXSecondaryPboard = @"Secondary";
+
+ // This is a memory loss, never released.
+ pasteboard_changecount
+ = [[NSMutableDictionary
+ dictionaryWithObjectsAndKeys:
+ [NSNumber numberWithLong:0], NSGeneralPboard,
+ [NSNumber numberWithLong:0], NXPrimaryPboard,
+ [NSNumber numberWithLong:0], NXSecondaryPboard,
+ [NSNumber numberWithLong:0], NSStringPboardType,
+ [NSNumber numberWithLong:0], NSFilenamesPboardType,
+ [NSNumber numberWithLong:0], NSTabularTextPboardType,
+ nil] retain];
}
void
syms_of_nsselect (void)
{
- QCLIPBOARD = intern_c_string ("CLIPBOARD"); staticpro (&QCLIPBOARD);
- QSECONDARY = intern_c_string ("SECONDARY"); staticpro (&QSECONDARY);
- QTEXT = intern_c_string ("TEXT"); staticpro (&QTEXT);
- QFILE_NAME = intern_c_string ("FILE_NAME"); staticpro (&QFILE_NAME);
+ DEFSYM (QCLIPBOARD, "CLIPBOARD");
+ DEFSYM (QSECONDARY, "SECONDARY");
+ DEFSYM (QTEXT, "TEXT");
+ DEFSYM (QFILE_NAME, "FILE_NAME");
defsubr (&Sns_disown_selection_internal);
- defsubr (&Sx_get_selection_internal);
+ defsubr (&Sns_get_selection);
defsubr (&Sns_own_selection_internal);
- defsubr (&Sx_selection_exists_p);
+ defsubr (&Sns_selection_exists_p);
defsubr (&Sns_selection_owner_p);
- defsubr (&Sns_get_selection_internal);
- defsubr (&Sns_store_selection_internal);
Vselection_alist = Qnil;
staticpro (&Vselection_alist);
This hook doesn't let you change the behavior of Emacs's selection replies,\n\
it merely informs you that they have happened.");
Vns_sent_selection_hooks = Qnil;
-
- DEFVAR_LISP ("selection-converter-alist", Vselection_converter_alist,
- "An alist associating X Windows selection-types with functions.\n\
-These functions are called to convert the selection, with three args:\n\
-the name of the selection (typically `PRIMARY', `SECONDARY', or `CLIPBOARD');\n\
-a desired type to which the selection should be converted;\n\
-and the local selection value (whatever was given to `x-own-selection').\n\
-\n\
-The function should return the value to send to the X server\n\
-\(typically a string). A return value of nil\n\
-means that the conversion could not be done.\n\
-A return value which is the symbol `NULL'\n\
-means that a side-effect was executed,\n\
-and there is no meaningful selection value.");
- Vselection_converter_alist = Qnil;
-
- DEFVAR_LISP ("ns-lost-selection-hooks", Vns_lost_selection_hooks,
- "A list of functions to be called when Emacs loses an X selection.\n\
-\(This happens when some other X client makes its own selection\n\
-or when a Lisp program explicitly clears the selection.)\n\
-The functions are called with one argument, the selection type\n\
-\(a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD').");
- Vns_lost_selection_hooks = Qnil;
-
- Qforeign_selection = intern_c_string ("foreign-selection");
- staticpro (&Qforeign_selection);
}