diff options
Diffstat (limited to 'libcaja-private/caja-undo.c')
| -rw-r--r-- | libcaja-private/caja-undo.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/libcaja-private/caja-undo.c b/libcaja-private/caja-undo.c deleted file mode 100644 index ba946a0a..00000000 --- a/libcaja-private/caja-undo.c +++ /dev/null @@ -1,218 +0,0 @@ -/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ - -/* caja-undo.c - public interface for objects that implement - * undoable actions -- works across components - * - * Copyright (C) 2000 Eazel, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - * Author: Darin Adler <[email protected]> - */ - -#include <config.h> -#include "caja-undo.h" - -#include "caja-undo-private.h" -#include "caja-undo-transaction.h" -#include <gtk/gtk.h> - -#define CAJA_UNDO_MANAGER_DATA "Caja undo manager" - -/* Register a simple undo action by calling caja_undo_register_full. */ -void -caja_undo_register (GObject *target, - CajaUndoCallback callback, - gpointer callback_data, - GDestroyNotify callback_data_destroy_notify, - const char *operation_name, - const char *undo_menu_item_label, - const char *undo_menu_item_hint, - const char *redo_menu_item_label, - const char *redo_menu_item_hint) -{ - CajaUndoAtom atom; - GList single_atom_list; - - g_return_if_fail (G_IS_OBJECT (target)); - g_return_if_fail (callback != NULL); - - /* Make an atom. */ - atom.target = target; - atom.callback = callback; - atom.callback_data = callback_data; - atom.callback_data_destroy_notify = callback_data_destroy_notify; - - /* Make a single-atom list. */ - single_atom_list.data = &atom; - single_atom_list.next = NULL; - single_atom_list.prev = NULL; - - /* Call the full version of the registration function, - * using the undo target as the place to search for the - * undo manager. - */ - caja_undo_register_full (&single_atom_list, - target, - operation_name, - undo_menu_item_label, - undo_menu_item_hint, - redo_menu_item_label, - redo_menu_item_hint); -} - -/* Register an undo action. */ -void -caja_undo_register_full (GList *atoms, - GObject *undo_manager_search_start_object, - const char *operation_name, - const char *undo_menu_item_label, - const char *undo_menu_item_hint, - const char *redo_menu_item_label, - const char *redo_menu_item_hint) -{ - CajaUndoTransaction *transaction; - GList *p; - - g_return_if_fail (atoms != NULL); - g_return_if_fail (G_IS_OBJECT (undo_manager_search_start_object)); - - /* Create an undo transaction */ - transaction = caja_undo_transaction_new (operation_name, - undo_menu_item_label, - undo_menu_item_hint, - redo_menu_item_label, - redo_menu_item_hint); - for (p = atoms; p != NULL; p = p->next) - { - caja_undo_transaction_add_atom (transaction, p->data); - } - caja_undo_transaction_add_to_undo_manager - (transaction, - caja_undo_get_undo_manager (undo_manager_search_start_object)); - - /* Now we are done with the transaction. - * If the undo manager is holding it, then this will not destroy it. - */ - g_object_unref (transaction); -} - -/* Cover for forgetting about all undo relating to a particular target. */ -void -caja_undo_unregister (GObject *target) -{ - /* Perhaps this should also unregister all children if called on a - * GtkContainer? That might be handy. - */ - caja_undo_transaction_unregister_object (target); -} - -void -caja_undo (GObject *undo_manager_search_start_object) -{ - CajaUndoManager *manager; - - g_return_if_fail (G_IS_OBJECT (undo_manager_search_start_object)); - - manager = caja_undo_get_undo_manager (undo_manager_search_start_object); - if (manager != NULL) - { - caja_undo_manager_undo (manager); - } -} - -CajaUndoManager * -caja_undo_get_undo_manager (GObject *start_object) -{ - CajaUndoManager *manager; - GtkWidget *parent; - GtkWindow *transient_parent; - - if (start_object == NULL) - { - return NULL; - } - - g_return_val_if_fail (G_IS_OBJECT (start_object), NULL); - - /* Check for an undo manager right here. */ - manager = g_object_get_data (start_object, CAJA_UNDO_MANAGER_DATA); - if (manager != NULL) - { - return manager; - } - - /* Check for undo manager up the parent chain. */ - if (GTK_IS_WIDGET (start_object)) - { - parent = gtk_widget_get_parent (GTK_WIDGET (start_object)); - if (parent != NULL) - { - manager = caja_undo_get_undo_manager (G_OBJECT (parent)); - if (manager != NULL) - { - return manager; - } - } - - /* Check for undo manager in our window's parent. */ - if (GTK_IS_WINDOW (start_object)) - { - transient_parent = gtk_window_get_transient_for (GTK_WINDOW (start_object)); - if (transient_parent != NULL) - { - manager = caja_undo_get_undo_manager (G_OBJECT (transient_parent)); - if (manager != NULL) - { - return manager; - } - } - } - } - - /* Found nothing. I can live with that. */ - return NULL; -} - -void -caja_undo_attach_undo_manager (GObject *object, - CajaUndoManager *manager) -{ - g_return_if_fail (G_IS_OBJECT (object)); - - if (manager == NULL) - { - g_object_set_data (object, CAJA_UNDO_MANAGER_DATA, NULL); - } - else - { - g_object_ref (manager); - g_object_set_data_full - (object, CAJA_UNDO_MANAGER_DATA, - manager, g_object_unref); - } -} - -/* Copy a reference to the undo manager fromone object to another. */ -void -caja_undo_share_undo_manager (GObject *destination_object, - GObject *source_object) -{ - CajaUndoManager *manager; - - manager = caja_undo_get_undo_manager (source_object); - caja_undo_attach_undo_manager (destination_object, manager); -} |