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![Martin Wehner](/assets/img/avatar_default.png)
2006-03-18 Martin Wehner <martin.wehner@gmail.com> * libnautilus-private/*.c: * src/file-manager/*.c: * src/*.c: Use gi18n.h instead of deprecated gnome-i18n.h header. * libnautilus-private/nautilus-query.c: (nautilus_query_to_readable_string): Mark string for translation. * po/POTFILES.in: Add nautilus-query.c Patch from Wouter Bolsterlee <uws+gnome@xs4all.nl>
331 lines
8.1 KiB
C
331 lines
8.1 KiB
C
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
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/* Signal handlers to enable undo in Gtk Widgets.
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*
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* Copyright (C) 2000 Eazel, Inc.
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*
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* Author: Gene Z. Ragan <gzr@eazel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; 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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*/
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#include <config.h>
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#include <gtk/gtk.h>
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#include <glib/gi18n.h>
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#include <libnautilus-private/nautilus-undo.h>
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#include <eel/eel-gtk-macros.h>
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#include <string.h>
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#include "nautilus-undo-signal-handlers.h"
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typedef struct {
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char *undo_text;
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gint position;
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guint selection_start;
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guint selection_end;
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} EditableUndoData;
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typedef struct {
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gboolean undo_registered;
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} EditableUndoObjectData;
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static void restore_editable_from_undo_snapshot_callback (GObject *target,
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gpointer callback_data);
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static void editable_register_edit_undo (GtkEditable *editable);
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static void free_editable_object_data (gpointer data);
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/* nautilus_undo_set_up_nautilus_entry_for_undo
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*
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* Functions and callback methods to handle undo
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* in a NautilusEntry
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*/
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static void
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nautilus_entry_user_changed_callback (NautilusEntry *entry)
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{
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/* Register undo transaction */
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editable_register_edit_undo (GTK_EDITABLE (entry));
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}
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void
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nautilus_undo_set_up_nautilus_entry_for_undo (NautilusEntry *entry)
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{
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EditableUndoObjectData *data;
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if (!NAUTILUS_IS_ENTRY (entry) ) {
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return;
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}
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data = g_new(EditableUndoObjectData, 1);
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data->undo_registered = FALSE;
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g_object_set_data_full (G_OBJECT (entry), "undo_registered",
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data, free_editable_object_data);
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/* Connect to entry signals */
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g_signal_connect (entry, "user_changed",
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G_CALLBACK (nautilus_entry_user_changed_callback),
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NULL);
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}
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void
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nautilus_undo_tear_down_nautilus_entry_for_undo (NautilusEntry *entry)
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{
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if (!NAUTILUS_IS_ENTRY (entry) ) {
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return;
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}
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/* Disconnect from entry signals */
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g_signal_handlers_disconnect_by_func
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(entry, G_CALLBACK (nautilus_entry_user_changed_callback), NULL);
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}
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/* nautilus_undo_set_up_nautilus_entry_for_undo
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*
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* Functions and callback methods to handle undo
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* in a NautilusEntry
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*/
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static void
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free_editable_undo_data (gpointer data)
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{
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EditableUndoData *undo_data;
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undo_data = (EditableUndoData *) data;
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g_free (undo_data->undo_text);
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g_free (undo_data);
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}
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static void
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free_editable_object_data (gpointer data)
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{
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g_free (data);
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}
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static void
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editable_insert_text_callback (GtkEditable *editable)
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{
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/* Register undo transaction */
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editable_register_edit_undo (editable);
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}
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static void
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editable_delete_text_callback (GtkEditable *editable)
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{
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/* Register undo transaction */
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editable_register_edit_undo (editable);
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}
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static void
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editable_register_edit_undo (GtkEditable *editable)
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{
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EditableUndoData *undo_data;
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EditableUndoObjectData *undo_info;
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gpointer data;
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if (!GTK_IS_EDITABLE (editable) ) {
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return;
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}
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/* Check our undo registered flag */
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data = g_object_get_data (G_OBJECT (editable), "undo_registered");
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if (data == NULL) {
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g_warning ("Undo data is NULL");
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return;
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}
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undo_info = (EditableUndoObjectData *)data;
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if (undo_info->undo_registered) {
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return;
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}
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undo_data = g_new0 (EditableUndoData, 1);
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undo_data->undo_text = gtk_editable_get_chars (editable, 0, -1);
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undo_data->position = gtk_editable_get_position (editable);
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gtk_editable_get_selection_bounds (editable,
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&undo_data->selection_start,
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&undo_data->selection_end);
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nautilus_undo_register
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(G_OBJECT (editable),
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restore_editable_from_undo_snapshot_callback,
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undo_data,
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(GDestroyNotify) free_editable_undo_data,
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_("Edit"),
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_("Undo Edit"),
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_("Undo the edit"),
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_("Redo Edit"),
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_("Redo the edit"));
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undo_info->undo_registered = TRUE;
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}
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void
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nautilus_undo_set_up_editable_for_undo (GtkEditable *editable)
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{
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EditableUndoObjectData *data;
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if (!GTK_IS_EDITABLE (editable) ) {
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return;
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}
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/* Connect to editable signals */
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g_signal_connect (editable, "insert_text",
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G_CALLBACK (editable_insert_text_callback), NULL);
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g_signal_connect (editable, "delete_text",
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G_CALLBACK (editable_delete_text_callback), NULL);
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data = g_new (EditableUndoObjectData, 1);
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data->undo_registered = FALSE;
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g_object_set_data_full (G_OBJECT (editable), "undo_registered",
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data, free_editable_object_data);
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}
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void
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nautilus_undo_tear_down_editable_for_undo (GtkEditable *editable)
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{
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if (!GTK_IS_EDITABLE (editable) ) {
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return;
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}
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/* Disconnect from entry signals */
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g_signal_handlers_disconnect_by_func
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(editable, G_CALLBACK (editable_insert_text_callback), NULL);
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g_signal_handlers_disconnect_by_func
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(editable, G_CALLBACK (editable_delete_text_callback), NULL);
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}
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/* restore_editable_from_undo_snapshot_callback
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*
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* Restore edited text.
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*/
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static void
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restore_editable_from_undo_snapshot_callback (GObject *target, gpointer callback_data)
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{
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GtkEditable *editable;
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GtkWindow *window;
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EditableUndoData *undo_data;
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EditableUndoObjectData *data;
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gint position;
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editable = GTK_EDITABLE (target);
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undo_data = (EditableUndoData *) callback_data;
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/* Check our undo registered flag */
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data = g_object_get_data (target, "undo_registered");
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if (data == NULL) {
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g_warning ("Undo regisetred flag not found");
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return;
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}
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/* Reset the registered flag so we get a new item for future editing. */
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data->undo_registered = FALSE;
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/* Register a new undo transaction for redo. */
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editable_register_edit_undo (editable);
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/* Restore the text. */
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position = 0;
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gtk_editable_delete_text (editable, 0, -1);
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gtk_editable_insert_text (editable, undo_data->undo_text,
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strlen (undo_data->undo_text), &position);
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/* Set focus to widget */
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window = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (target)));
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gtk_window_set_focus (window, GTK_WIDGET (editable));
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/* We have to do this call, because the previous call selects all text */
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gtk_editable_select_region (editable, 0, 0);
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/* Restore selection */
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gtk_editable_select_region (editable, undo_data->selection_start,
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undo_data->selection_end);
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/* Set the i-beam to the saved position */
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gtk_editable_set_position (editable, undo_data->position);
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/* Reset the registered flag so we get a new item for future editing. */
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data->undo_registered = FALSE;
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}
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/* editable_set_undo_key
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*
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* Allow the use of ctrl-z from within widget.
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*/
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/* Undo is disabled until we have a better implementation.
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* Both here and in nautilus-shell-ui.xml.
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*/
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/* FIXME bugzilla.gnome.org 43515: Undo doesn't work */
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#ifdef UNDO_ENABLED
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static gboolean
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editable_key_press_event (GtkEditable *editable, GdkEventKey *event, gpointer user_data)
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{
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switch (event->keyval) {
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/* Undo */
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case 'z':
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if ((event->state & GDK_CONTROL_MASK) != 0) {
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nautilus_undo (GTK_OBJECT (editable));
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return TRUE;
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}
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break;
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default:
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break;
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}
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return FALSE;
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}
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#endif
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/* editable_set_undo_key
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*
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* Allow the use of ctrl-z from within widget. This should only be
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* set if there is no menu bar to use to undo the widget.
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*/
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void
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nautilus_undo_editable_set_undo_key (GtkEditable *editable, gboolean value)
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{
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/* FIXME bugzilla.gnome.org 43515: Undo doesn't work */
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#ifdef UNDO_ENABLED
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if (value) {
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/* Connect to entry signals */
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g_signal_connect (editable, "key_press_event",
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G_CALLBACK (editable_key_press_event), NULL);
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} else {
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/* FIXME bugzilla.gnome.org 45092: Warns if the handler
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* is not already connected. We could use object data
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* to prevent that little problem.
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*/
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gtk_signal_disconnect_by_func (editable,
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G_CALLBACK (editable_key_press_event), NULL);
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}
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#endif
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}
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