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gtk2/gtk/gtkclipboard-quartz.c
Michael Natterer 9d31a04d12 quartz: fix crash in the recent clipboard "fix", and really fix it 
We must not release the GtkClipboardOwner in pasteboardChangedOwner
becaue we don't own a reference to ourselves (NSPasteboard does).
Instead, release the owner right after setting it, transferring
ownership to NSPasteboard

Also, fix repeated setting of the same owner by keeping the
owner around in GtkCLipboard, and re-use it if "user_data"
doesn't change. To avoid clipboard_unset()ting our own contents
in the process, add an ugly "setting_same_owner" boolean to
GtkClipboardOwner, set it during re-setting the same owner,
and avoid calling clipboard_unset() from pasteboardChangedOwner
if it's TRUE.
(cherry picked from commit 4a8df7a33c)
2012-12-07 12:30:15 +01:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
* Copyright (C) 2004 Nokia Corporation
* Copyright (C) 2006-2008 Imendio AB
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <string.h>
#import <Cocoa/Cocoa.h>
#include "gtkclipboard.h"
#include "gtkinvisible.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkintl.h"
#include "gtktextbuffer.h"
#include "gtkselectionprivate.h"
#include "gtkquartz.h"
enum {
OWNER_CHANGE,
LAST_SIGNAL
};
@interface GtkClipboardOwner : NSObject {
GtkClipboard *clipboard;
gboolean setting_same_owner;
}
@end
typedef struct _GtkClipboardClass GtkClipboardClass;
struct _GtkClipboard
{
GObject parent_instance;
NSPasteboard *pasteboard;
GtkClipboardOwner *owner;
NSInteger change_count;
GdkAtom selection;
GtkClipboardGetFunc get_func;
GtkClipboardClearFunc clear_func;
gpointer user_data;
gboolean have_owner;
GtkTargetList *target_list;
gboolean have_selection;
GdkDisplay *display;
GdkAtom *cached_targets;
gint n_cached_targets;
guint notify_signal_id;
gboolean storing_selection;
GMainLoop *store_loop;
guint store_timeout;
gint n_storable_targets;
GdkAtom *storable_targets;
};
struct _GtkClipboardClass
{
GObjectClass parent_class;
void (*owner_change) (GtkClipboard *clipboard,
GdkEventOwnerChange *event);
};
static void gtk_clipboard_class_init (GtkClipboardClass *class);
static void gtk_clipboard_finalize (GObject *object);
static void gtk_clipboard_owner_change (GtkClipboard *clipboard,
GdkEventOwnerChange *event);
static void clipboard_unset (GtkClipboard *clipboard);
static GtkClipboard *clipboard_peek (GdkDisplay *display,
GdkAtom selection,
gboolean only_if_exists);
@implementation GtkClipboardOwner
-(void)pasteboard:(NSPasteboard *)sender provideDataForType:(NSString *)type
{
GtkSelectionData selection_data;
guint info;
if (!clipboard->target_list)
return;
memset (&selection_data, 0, sizeof (GtkSelectionData));
selection_data.selection = clipboard->selection;
selection_data.target = _gtk_quartz_pasteboard_type_to_atom (type);
selection_data.display = gdk_display_get_default ();
selection_data.length = -1;
if (gtk_target_list_find (clipboard->target_list, selection_data.target, &info))
{
clipboard->get_func (clipboard, &selection_data,
info,
clipboard->user_data);
if (selection_data.length >= 0)
_gtk_quartz_set_selection_data_for_pasteboard (clipboard->pasteboard,
&selection_data);
g_free (selection_data.data);
}
}
/* pasteboardChangedOwner is not called immediately, and it's not called
* reliably. It is somehow documented in the apple api docs, but the docs
* suck and don't really give clear instructions. Therefore we track
* changeCount in several places below and clear the clipboard if it
* changed.
*/
- (void)pasteboardChangedOwner:(NSPasteboard *)sender
{
if (! setting_same_owner)
clipboard_unset (clipboard);
}
- (id)initWithClipboard:(GtkClipboard *)aClipboard
{
self = [super init];
if (self)
{
clipboard = aClipboard;
setting_same_owner = FALSE;
}
return self;
}
@end
static const gchar clipboards_owned_key[] = "gtk-clipboards-owned";
static GQuark clipboards_owned_key_id = 0;
static GObjectClass *parent_class;
static guint clipboard_signals[LAST_SIGNAL] = { 0 };
GType
gtk_clipboard_get_type (void)
{
static GType clipboard_type = 0;
if (!clipboard_type)
{
const GTypeInfo clipboard_info =
{
sizeof (GtkClipboardClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_clipboard_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkClipboard),
0, /* n_preallocs */
(GInstanceInitFunc) NULL,
};
clipboard_type = g_type_register_static (G_TYPE_OBJECT, I_("GtkClipboard"),
&clipboard_info, 0);
}
return clipboard_type;
}
static void
gtk_clipboard_class_init (GtkClipboardClass *class)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class);
parent_class = g_type_class_peek_parent (class);
gobject_class->finalize = gtk_clipboard_finalize;
class->owner_change = gtk_clipboard_owner_change;
clipboard_signals[OWNER_CHANGE] =
g_signal_new (I_("owner-change"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkClipboardClass, owner_change),
NULL, NULL,
_gtk_marshal_VOID__BOXED,
G_TYPE_NONE, 1,
GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
}
static void
gtk_clipboard_finalize (GObject *object)
{
GtkClipboard *clipboard;
GSList *clipboards;
clipboard = GTK_CLIPBOARD (object);
clipboards = g_object_get_data (G_OBJECT (clipboard->display), "gtk-clipboard-list");
if (g_slist_index (clipboards, clipboard) >= 0)
g_warning ("GtkClipboard prematurely finalized");
clipboard_unset (clipboard);
clipboards = g_object_get_data (G_OBJECT (clipboard->display), "gtk-clipboard-list");
clipboards = g_slist_remove (clipboards, clipboard);
g_object_set_data (G_OBJECT (clipboard->display), I_("gtk-clipboard-list"), clipboards);
if (clipboard->store_loop && g_main_loop_is_running (clipboard->store_loop))
g_main_loop_quit (clipboard->store_loop);
if (clipboard->store_timeout != 0)
g_source_remove (clipboard->store_timeout);
g_free (clipboard->storable_targets);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
clipboard_display_closed (GdkDisplay *display,
gboolean is_error,
GtkClipboard *clipboard)
{
GSList *clipboards;
clipboards = g_object_get_data (G_OBJECT (display), "gtk-clipboard-list");
g_object_run_dispose (G_OBJECT (clipboard));
clipboards = g_slist_remove (clipboards, clipboard);
g_object_set_data (G_OBJECT (display), I_("gtk-clipboard-list"), clipboards);
g_object_unref (clipboard);
}
GtkClipboard *
gtk_clipboard_get_for_display (GdkDisplay *display,
GdkAtom selection)
{
g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);
g_return_val_if_fail (!gdk_display_is_closed (display), NULL);
return clipboard_peek (display, selection, FALSE);
}
GtkClipboard *
gtk_clipboard_get (GdkAtom selection)
{
return gtk_clipboard_get_for_display (gdk_display_get_default (), selection);
}
static void
clipboard_owner_destroyed (gpointer data)
{
GSList *clipboards = data;
GSList *tmp_list;
tmp_list = clipboards;
while (tmp_list)
{
GtkClipboard *clipboard = tmp_list->data;
clipboard->get_func = NULL;
clipboard->clear_func = NULL;
clipboard->user_data = NULL;
clipboard->have_owner = FALSE;
if (clipboard->target_list)
{
gtk_target_list_unref (clipboard->target_list);
clipboard->target_list = NULL;
}
gtk_clipboard_clear (clipboard);
tmp_list = tmp_list->next;
}
g_slist_free (clipboards);
}
static void
clipboard_add_owner_notify (GtkClipboard *clipboard)
{
if (!clipboards_owned_key_id)
clipboards_owned_key_id = g_quark_from_static_string (clipboards_owned_key);
if (clipboard->have_owner)
g_object_set_qdata_full (clipboard->user_data, clipboards_owned_key_id,
g_slist_prepend (g_object_steal_qdata (clipboard->user_data,
clipboards_owned_key_id),
clipboard),
clipboard_owner_destroyed);
}
static void
clipboard_remove_owner_notify (GtkClipboard *clipboard)
{
if (clipboard->have_owner)
g_object_set_qdata_full (clipboard->user_data, clipboards_owned_key_id,
g_slist_remove (g_object_steal_qdata (clipboard->user_data,
clipboards_owned_key_id),
clipboard),
clipboard_owner_destroyed);
}
static gboolean
gtk_clipboard_set_contents (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
guint n_targets,
GtkClipboardGetFunc get_func,
GtkClipboardClearFunc clear_func,
gpointer user_data,
gboolean have_owner)
{
GtkClipboardOwner *owner;
NSSet *types;
NSAutoreleasePool *pool;
if (!(clipboard->have_owner && have_owner) ||
clipboard->user_data != user_data)
{
clipboard_unset (clipboard);
if (clipboard->get_func)
{
/* Calling unset() caused the clipboard contents to be reset!
* Avoid leaking and return
*/
if (!(clipboard->have_owner && have_owner) ||
clipboard->user_data != user_data)
{
(*clear_func) (clipboard, user_data);
return FALSE;
}
else
{
return TRUE;
}
}
}
pool = [[NSAutoreleasePool alloc] init];
types = _gtk_quartz_target_entries_to_pasteboard_types (targets, n_targets);
/* call declareTypes before setting the clipboard members because
* declareTypes might clear the clipboard
*/
if (user_data && user_data == clipboard->user_data)
{
owner = [clipboard->owner retain];
owner->setting_same_owner = TRUE;
clipboard->change_count = [clipboard->pasteboard declareTypes: [types allObjects]
owner: owner];
owner->setting_same_owner = FALSE;
}
else
{
owner = [[GtkClipboardOwner alloc] initWithClipboard:clipboard];
clipboard->change_count = [clipboard->pasteboard declareTypes: [types allObjects]
owner: owner];
}
[owner release];
[types release];
[pool release];
clipboard->owner = owner;
clipboard->user_data = user_data;
clipboard->have_owner = have_owner;
if (have_owner)
clipboard_add_owner_notify (clipboard);
clipboard->get_func = get_func;
clipboard->clear_func = clear_func;
if (clipboard->target_list)
gtk_target_list_unref (clipboard->target_list);
clipboard->target_list = gtk_target_list_new (targets, n_targets);
return TRUE;
}
gboolean
gtk_clipboard_set_with_data (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
guint n_targets,
GtkClipboardGetFunc get_func,
GtkClipboardClearFunc clear_func,
gpointer user_data)
{
g_return_val_if_fail (clipboard != NULL, FALSE);
g_return_val_if_fail (targets != NULL, FALSE);
g_return_val_if_fail (get_func != NULL, FALSE);
return gtk_clipboard_set_contents (clipboard, targets, n_targets,
get_func, clear_func, user_data,
FALSE);
}
gboolean
gtk_clipboard_set_with_owner (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
guint n_targets,
GtkClipboardGetFunc get_func,
GtkClipboardClearFunc clear_func,
GObject *owner)
{
g_return_val_if_fail (clipboard != NULL, FALSE);
g_return_val_if_fail (targets != NULL, FALSE);
g_return_val_if_fail (get_func != NULL, FALSE);
g_return_val_if_fail (G_IS_OBJECT (owner), FALSE);
return gtk_clipboard_set_contents (clipboard, targets, n_targets,
get_func, clear_func, owner,
TRUE);
}
GObject *
gtk_clipboard_get_owner (GtkClipboard *clipboard)
{
g_return_val_if_fail (clipboard != NULL, NULL);
if (clipboard->change_count < [clipboard->pasteboard changeCount])
{
clipboard_unset (clipboard);
clipboard->change_count = [clipboard->pasteboard changeCount];
}
if (clipboard->have_owner)
return clipboard->user_data;
else
return NULL;
}
static void
clipboard_unset (GtkClipboard *clipboard)
{
GtkClipboardClearFunc old_clear_func;
gpointer old_data;
gboolean old_have_owner;
gint old_n_storable_targets;
old_clear_func = clipboard->clear_func;
old_data = clipboard->user_data;
old_have_owner = clipboard->have_owner;
old_n_storable_targets = clipboard->n_storable_targets;
if (old_have_owner)
{
clipboard_remove_owner_notify (clipboard);
clipboard->have_owner = FALSE;
}
clipboard->n_storable_targets = -1;
g_free (clipboard->storable_targets);
clipboard->storable_targets = NULL;
clipboard->owner = NULL;
clipboard->get_func = NULL;
clipboard->clear_func = NULL;
clipboard->user_data = NULL;
if (old_clear_func)
old_clear_func (clipboard, old_data);
if (clipboard->target_list)
{
gtk_target_list_unref (clipboard->target_list);
clipboard->target_list = NULL;
}
/* If we've transferred the clipboard data to the manager,
* unref the owner
*/
if (old_have_owner &&
old_n_storable_targets != -1)
g_object_unref (old_data);
}
void
gtk_clipboard_clear (GtkClipboard *clipboard)
{
clipboard_unset (clipboard);
[clipboard->pasteboard declareTypes:nil owner:nil];
}
static void
text_get_func (GtkClipboard *clipboard,
GtkSelectionData *selection_data,
guint info,
gpointer data)
{
gtk_selection_data_set_text (selection_data, data, -1);
}
static void
text_clear_func (GtkClipboard *clipboard,
gpointer data)
{
g_free (data);
}
void
gtk_clipboard_set_text (GtkClipboard *clipboard,
const gchar *text,
gint len)
{
GtkTargetEntry target = { "UTF8_STRING", 0, 0 };
g_return_if_fail (clipboard != NULL);
g_return_if_fail (text != NULL);
if (len < 0)
len = strlen (text);
gtk_clipboard_set_with_data (clipboard,
&target, 1,
text_get_func, text_clear_func,
g_strndup (text, len));
gtk_clipboard_set_can_store (clipboard, NULL, 0);
}
static void
pixbuf_get_func (GtkClipboard *clipboard,
GtkSelectionData *selection_data,
guint info,
gpointer data)
{
gtk_selection_data_set_pixbuf (selection_data, data);
}
static void
pixbuf_clear_func (GtkClipboard *clipboard,
gpointer data)
{
g_object_unref (data);
}
void
gtk_clipboard_set_image (GtkClipboard *clipboard,
GdkPixbuf *pixbuf)
{
GtkTargetList *list;
GList *l;
GtkTargetEntry *targets;
gint n_targets, i;
g_return_if_fail (clipboard != NULL);
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
list = gtk_target_list_new (NULL, 0);
gtk_target_list_add_image_targets (list, 0, TRUE);
n_targets = g_list_length (list->list);
targets = g_new0 (GtkTargetEntry, n_targets);
for (l = list->list, i = 0; l; l = l->next, i++)
{
GtkTargetPair *pair = (GtkTargetPair *)l->data;
targets[i].target = gdk_atom_name (pair->target);
}
gtk_clipboard_set_with_data (clipboard,
targets, n_targets,
pixbuf_get_func, pixbuf_clear_func,
g_object_ref (pixbuf));
gtk_clipboard_set_can_store (clipboard, NULL, 0);
for (i = 0; i < n_targets; i++)
g_free (targets[i].target);
g_free (targets);
gtk_target_list_unref (list);
}
void
gtk_clipboard_request_contents (GtkClipboard *clipboard,
GdkAtom target,
GtkClipboardReceivedFunc callback,
gpointer user_data)
{
GtkSelectionData *data;
data = gtk_clipboard_wait_for_contents (clipboard, target);
callback (clipboard, data, user_data);
gtk_selection_data_free (data);
}
void
gtk_clipboard_request_text (GtkClipboard *clipboard,
GtkClipboardTextReceivedFunc callback,
gpointer user_data)
{
gchar *data = gtk_clipboard_wait_for_text (clipboard);
callback (clipboard, data, user_data);
g_free (data);
}
void
gtk_clipboard_request_rich_text (GtkClipboard *clipboard,
GtkTextBuffer *buffer,
GtkClipboardRichTextReceivedFunc callback,
gpointer user_data)
{
/* FIXME: Implement */
}
guint8 *
gtk_clipboard_wait_for_rich_text (GtkClipboard *clipboard,
GtkTextBuffer *buffer,
GdkAtom *format,
gsize *length)
{
/* FIXME: Implement */
return NULL;
}
void
gtk_clipboard_request_image (GtkClipboard *clipboard,
GtkClipboardImageReceivedFunc callback,
gpointer user_data)
{
GdkPixbuf *pixbuf = gtk_clipboard_wait_for_image (clipboard);
callback (clipboard, pixbuf, user_data);
if (pixbuf)
g_object_unref (pixbuf);
}
void
gtk_clipboard_request_uris (GtkClipboard *clipboard,
GtkClipboardURIReceivedFunc callback,
gpointer user_data)
{
gchar **uris = gtk_clipboard_wait_for_uris (clipboard);
callback (clipboard, uris, user_data);
g_strfreev (uris);
}
void
gtk_clipboard_request_targets (GtkClipboard *clipboard,
GtkClipboardTargetsReceivedFunc callback,
gpointer user_data)
{
GdkAtom *targets;
gint n_targets;
gtk_clipboard_wait_for_targets (clipboard, &targets, &n_targets);
callback (clipboard, targets, n_targets, user_data);
}
GtkSelectionData *
gtk_clipboard_wait_for_contents (GtkClipboard *clipboard,
GdkAtom target)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
GtkSelectionData *selection_data = NULL;
if (clipboard->change_count < [clipboard->pasteboard changeCount])
{
clipboard_unset (clipboard);
clipboard->change_count = [clipboard->pasteboard changeCount];
}
if (target == gdk_atom_intern_static_string ("TARGETS"))
{
NSArray *types = [clipboard->pasteboard types];
int i, length;
GList *atom_list, *l;
GdkAtom *atoms;
length = [types count] * sizeof (GdkAtom);
selection_data = g_slice_new0 (GtkSelectionData);
selection_data->selection = clipboard->selection;
selection_data->target = target;
atoms = g_malloc (length);
atom_list = _gtk_quartz_pasteboard_types_to_atom_list (types);
for (l = atom_list, i = 0; l ; l = l->next, i++)
atoms[i] = GDK_POINTER_TO_ATOM (l->data);
g_list_free (atom_list);
gtk_selection_data_set (selection_data,
GDK_SELECTION_TYPE_ATOM, 32,
(guchar *)atoms, length);
[pool release];
return selection_data;
}
selection_data = _gtk_quartz_get_selection_data_from_pasteboard (clipboard->pasteboard,
target,
clipboard->selection);
[pool release];
return selection_data;
}
gchar *
gtk_clipboard_wait_for_text (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gchar *result;
data = gtk_clipboard_wait_for_contents (clipboard,
gdk_atom_intern_static_string ("UTF8_STRING"));
result = (gchar *)gtk_selection_data_get_text (data);
gtk_selection_data_free (data);
return result;
}
GdkPixbuf *
gtk_clipboard_wait_for_image (GtkClipboard *clipboard)
{
const gchar *priority[] = { "image/png", "image/tiff", "image/jpeg", "image/gif", "image/bmp" };
int i;
GtkSelectionData *data;
for (i = 0; i < G_N_ELEMENTS (priority); i++)
{
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string (priority[i]));
if (data)
{
GdkPixbuf *pixbuf = gtk_selection_data_get_pixbuf (data);
gtk_selection_data_free (data);
return pixbuf;
}
}
return NULL;
}
gchar **
gtk_clipboard_wait_for_uris (GtkClipboard *clipboard)
{
GtkSelectionData *data;
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("text/uri-list"));
if (data)
{
gchar **uris;
uris = gtk_selection_data_get_uris (data);
gtk_selection_data_free (data);
return uris;
}
return NULL;
}
GdkDisplay *
gtk_clipboard_get_display (GtkClipboard *clipboard)
{
g_return_val_if_fail (clipboard != NULL, NULL);
return clipboard->display;
}
gboolean
gtk_clipboard_wait_is_text_available (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gboolean result = FALSE;
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_text (data);
gtk_selection_data_free (data);
}
return result;
}
gboolean
gtk_clipboard_wait_is_rich_text_available (GtkClipboard *clipboard,
GtkTextBuffer *buffer)
{
GtkSelectionData *data;
gboolean result = FALSE;
g_return_val_if_fail (GTK_IS_CLIPBOARD (clipboard), FALSE);
g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_rich_text (data, buffer);
gtk_selection_data_free (data);
}
return result;
}
gboolean
gtk_clipboard_wait_is_image_available (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gboolean result = FALSE;
data = gtk_clipboard_wait_for_contents (clipboard,
gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_image (data, FALSE);
gtk_selection_data_free (data);
}
return result;
}
gboolean
gtk_clipboard_wait_is_uris_available (GtkClipboard *clipboard)
{
GtkSelectionData *data;
gboolean result = FALSE;
data = gtk_clipboard_wait_for_contents (clipboard,
gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
result = gtk_selection_data_targets_include_uri (data);
gtk_selection_data_free (data);
}
return result;
}
gboolean
gtk_clipboard_wait_for_targets (GtkClipboard *clipboard,
GdkAtom **targets,
gint *n_targets)
{
GtkSelectionData *data;
gboolean result = FALSE;
g_return_val_if_fail (clipboard != NULL, FALSE);
/* If the display supports change notification we cache targets */
if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)) &&
clipboard->n_cached_targets != -1)
{
if (n_targets)
*n_targets = clipboard->n_cached_targets;
if (targets)
*targets = g_memdup (clipboard->cached_targets,
clipboard->n_cached_targets * sizeof (GdkAtom));
return TRUE;
}
if (n_targets)
*n_targets = 0;
if (targets)
*targets = NULL;
data = gtk_clipboard_wait_for_contents (clipboard, gdk_atom_intern_static_string ("TARGETS"));
if (data)
{
GdkAtom *tmp_targets;
gint tmp_n_targets;
result = gtk_selection_data_get_targets (data, &tmp_targets, &tmp_n_targets);
if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)))
{
clipboard->n_cached_targets = tmp_n_targets;
clipboard->cached_targets = g_memdup (tmp_targets,
tmp_n_targets * sizeof (GdkAtom));
}
if (n_targets)
*n_targets = tmp_n_targets;
if (targets)
*targets = tmp_targets;
else
g_free (tmp_targets);
gtk_selection_data_free (data);
}
return result;
}
static GtkClipboard *
clipboard_peek (GdkDisplay *display,
GdkAtom selection,
gboolean only_if_exists)
{
GtkClipboard *clipboard = NULL;
GSList *clipboards;
GSList *tmp_list;
if (selection == GDK_NONE)
selection = GDK_SELECTION_CLIPBOARD;
clipboards = g_object_get_data (G_OBJECT (display), "gtk-clipboard-list");
tmp_list = clipboards;
while (tmp_list)
{
clipboard = tmp_list->data;
if (clipboard->selection == selection)
break;
tmp_list = tmp_list->next;
}
if (!tmp_list && !only_if_exists)
{
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
NSString *pasteboard_name;
clipboard = g_object_new (GTK_TYPE_CLIPBOARD, NULL);
if (selection == GDK_SELECTION_CLIPBOARD)
pasteboard_name = NSGeneralPboard;
else
{
char *atom_string = gdk_atom_name (selection);
pasteboard_name = [NSString stringWithFormat:@"_GTK_%@",
[NSString stringWithUTF8String:atom_string]];
g_free (atom_string);
}
clipboard->pasteboard = [NSPasteboard pasteboardWithName:pasteboard_name];
[pool release];
clipboard->selection = selection;
clipboard->display = display;
clipboard->n_cached_targets = -1;
clipboard->n_storable_targets = -1;
clipboards = g_slist_prepend (clipboards, clipboard);
g_object_set_data (G_OBJECT (display), I_("gtk-clipboard-list"), clipboards);
g_signal_connect (display, "closed",
G_CALLBACK (clipboard_display_closed), clipboard);
gdk_display_request_selection_notification (display, selection);
}
return clipboard;
}
static void
gtk_clipboard_owner_change (GtkClipboard *clipboard,
GdkEventOwnerChange *event)
{
if (clipboard->n_cached_targets != -1)
{
clipboard->n_cached_targets = -1;
g_free (clipboard->cached_targets);
}
}
gboolean
gtk_clipboard_wait_is_target_available (GtkClipboard *clipboard,
GdkAtom target)
{
GdkAtom *targets;
gint i, n_targets;
gboolean retval = FALSE;
if (!gtk_clipboard_wait_for_targets (clipboard, &targets, &n_targets))
return FALSE;
for (i = 0; i < n_targets; i++)
{
if (targets[i] == target)
{
retval = TRUE;
break;
}
}
g_free (targets);
return retval;
}
void
_gtk_clipboard_handle_event (GdkEventOwnerChange *event)
{
}
void
gtk_clipboard_set_can_store (GtkClipboard *clipboard,
const GtkTargetEntry *targets,
gint n_targets)
{
/* FIXME: Implement */
}
void
gtk_clipboard_store (GtkClipboard *clipboard)
{
/* FIXME: Implement */
}
void
_gtk_clipboard_store_all (void)
{
/* FIXME: Implement */
}
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