mirror of
https://gitlab.gnome.org/GNOME/nautilus
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137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
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nautilus-clipboard-monitor.c: catch clipboard changes.
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Copyright (C) 2004 Red Hat, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with this program; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Author: Alexander Larsson <alexl@redhat.com>
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*/
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#include <config.h>
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#include "nautilus-clipboard-monitor.h"
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#include <eel/eel-debug.h>
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#include <eel/eel-gtk-macros.h>
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#include <eel/eel-glib-extensions.h>
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#include <eel/eel-glib-extensions.h>
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#include <gtk/gtkclipboard.h>
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/* X11 has a weakness when it comes to clipboard handling,
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* there is no way to get told when the owner of the clipboard
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* changes. This is often needed, for instance to set the
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* sensitivity of the paste menu item. We work around this
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* internally in an app by telling the clipboard monitor when
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* we changed the clipboard. Unfortunately this doesn't give
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* us perfect results, we still don't catch changes made by
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* other clients
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*
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* This is fixed with the XFIXES extensions, which recent versions
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* of Gtk+ supports as the owner_change signal on GtkClipboard. We
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* use this now, but keep the old code since not all X servers support
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* XFIXES.
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*/
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enum {
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CLIPBOARD_CHANGED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL];
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static void nautilus_clipboard_monitor_init (gpointer object,
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gpointer klass);
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static void nautilus_clipboard_monitor_class_init (gpointer klass);
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EEL_CLASS_BOILERPLATE (NautilusClipboardMonitor,
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nautilus_clipboard_monitor,
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G_TYPE_OBJECT)
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static NautilusClipboardMonitor *clipboard_monitor = NULL;
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static void
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destroy_clipboard_monitor (void)
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{
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if (clipboard_monitor != NULL) {
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g_object_unref (clipboard_monitor);
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}
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}
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NautilusClipboardMonitor *
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nautilus_clipboard_monitor_get (void)
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{
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GtkClipboard *clipboard;
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if (clipboard_monitor == NULL) {
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clipboard_monitor = NAUTILUS_CLIPBOARD_MONITOR (g_object_new (NAUTILUS_TYPE_CLIPBOARD_MONITOR, NULL));
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eel_debug_call_at_shutdown (destroy_clipboard_monitor);
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clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
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g_signal_connect (clipboard, "owner_change",
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G_CALLBACK (nautilus_clipboard_monitor_emit_changed), NULL);
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}
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return clipboard_monitor;
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}
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void
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nautilus_clipboard_monitor_emit_changed (void)
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{
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NautilusClipboardMonitor *monitor;
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monitor = nautilus_clipboard_monitor_get ();
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g_signal_emit (monitor, signals[CLIPBOARD_CHANGED], 0);
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}
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static void
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nautilus_clipboard_monitor_init (gpointer object, gpointer klass)
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{
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NautilusClipboardMonitor *monitor;
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monitor = NAUTILUS_CLIPBOARD_MONITOR (object);
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}
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static void
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clipboard_monitor_finalize (GObject *object)
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{
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NautilusClipboardMonitor *monitor;
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monitor = NAUTILUS_CLIPBOARD_MONITOR (object);
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EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
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}
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static void
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nautilus_clipboard_monitor_class_init (gpointer klass)
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{
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GObjectClass *object_class;
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object_class = G_OBJECT_CLASS (klass);
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object_class->finalize = clipboard_monitor_finalize;
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signals[CLIPBOARD_CHANGED] =
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g_signal_new ("clipboard_changed",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (NautilusClipboardMonitorClass, clipboard_changed),
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NULL, NULL,
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g_cclosure_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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