From 278df62878f2981dea980c5f48e791e047b9d5f1 Mon Sep 17 00:00:00 2001 From: Stefano Karapetsas Date: Thu, 6 Sep 2012 23:34:12 +0200 Subject: remove old undo code --- libcaja-private/caja-undo-signal-handlers.c | 345 ---------------------------- 1 file changed, 345 deletions(-) delete mode 100644 libcaja-private/caja-undo-signal-handlers.c (limited to 'libcaja-private/caja-undo-signal-handlers.c') diff --git a/libcaja-private/caja-undo-signal-handlers.c b/libcaja-private/caja-undo-signal-handlers.c deleted file mode 100644 index f1dfba3c..00000000 --- a/libcaja-private/caja-undo-signal-handlers.c +++ /dev/null @@ -1,345 +0,0 @@ -/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ - -/* Signal handlers to enable undo in Gtk Widgets. - * - * Copyright (C) 2000 Eazel, Inc. - * - * Author: Gene Z. Ragan - * - * 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. - */ - - -#include -#include - -#include -#include - -#include -#include - -#include "caja-undo-signal-handlers.h" - - -typedef struct -{ - char *undo_text; - gint position; - guint selection_start; - guint selection_end; -} EditableUndoData; - -typedef struct -{ - gboolean undo_registered; -} EditableUndoObjectData; - - -static void restore_editable_from_undo_snapshot_callback (GObject *target, - gpointer callback_data); -static void editable_register_edit_undo (GtkEditable *editable); -static void free_editable_object_data (gpointer data); - -/* caja_undo_set_up_caja_entry_for_undo - * - * Functions and callback methods to handle undo - * in a CajaEntry - */ - -static void -caja_entry_user_changed_callback (CajaEntry *entry) -{ - /* Register undo transaction */ - editable_register_edit_undo (GTK_EDITABLE (entry)); -} - -void -caja_undo_set_up_caja_entry_for_undo (CajaEntry *entry) -{ - EditableUndoObjectData *data; - - if (!CAJA_IS_ENTRY (entry) ) - { - return; - } - - data = g_new(EditableUndoObjectData, 1); - data->undo_registered = FALSE; - g_object_set_data_full (G_OBJECT (entry), "undo_registered", - data, free_editable_object_data); - - /* Connect to entry signals */ - g_signal_connect (entry, "user_changed", - G_CALLBACK (caja_entry_user_changed_callback), - NULL); -} - -void -caja_undo_tear_down_caja_entry_for_undo (CajaEntry *entry) -{ - if (!CAJA_IS_ENTRY (entry) ) - { - return; - } - - /* Disconnect from entry signals */ - g_signal_handlers_disconnect_by_func - (entry, G_CALLBACK (caja_entry_user_changed_callback), NULL); - -} - -/* caja_undo_set_up_caja_entry_for_undo - * - * Functions and callback methods to handle undo - * in a CajaEntry - */ - -static void -free_editable_undo_data (gpointer data) -{ - EditableUndoData *undo_data; - - undo_data = (EditableUndoData *) data; - - g_free (undo_data->undo_text); - g_free (undo_data); -} - -static void -free_editable_object_data (gpointer data) -{ - g_free (data); -} - - -static void -editable_insert_text_callback (GtkEditable *editable) -{ - /* Register undo transaction */ - editable_register_edit_undo (editable); -} - -static void -editable_delete_text_callback (GtkEditable *editable) -{ - /* Register undo transaction */ - editable_register_edit_undo (editable); -} - -static void -editable_register_edit_undo (GtkEditable *editable) -{ - EditableUndoData *undo_data; - EditableUndoObjectData *undo_info; - gpointer data; - - if (!GTK_IS_EDITABLE (editable) ) - { - return; - } - - /* Check our undo registered flag */ - data = g_object_get_data (G_OBJECT (editable), "undo_registered"); - if (data == NULL) - { - g_warning ("Undo data is NULL"); - return; - } - - undo_info = (EditableUndoObjectData *)data; - if (undo_info->undo_registered) - { - return; - } - - undo_data = g_new0 (EditableUndoData, 1); - undo_data->undo_text = gtk_editable_get_chars (editable, 0, -1); - undo_data->position = gtk_editable_get_position (editable); - gtk_editable_get_selection_bounds (editable, - &undo_data->selection_start, - &undo_data->selection_end); - - caja_undo_register - (G_OBJECT (editable), - restore_editable_from_undo_snapshot_callback, - undo_data, - (GDestroyNotify) free_editable_undo_data, - _("Edit"), - _("Undo Edit"), - _("Undo the edit"), - _("Redo Edit"), - _("Redo the edit")); - - undo_info->undo_registered = TRUE; -} - -void -caja_undo_set_up_editable_for_undo (GtkEditable *editable) -{ - EditableUndoObjectData *data; - - if (!GTK_IS_EDITABLE (editable) ) - { - return; - } - - /* Connect to editable signals */ - g_signal_connect (editable, "insert_text", - G_CALLBACK (editable_insert_text_callback), NULL); - g_signal_connect (editable, "delete_text", - G_CALLBACK (editable_delete_text_callback), NULL); - - - data = g_new (EditableUndoObjectData, 1); - data->undo_registered = FALSE; - g_object_set_data_full (G_OBJECT (editable), "undo_registered", - data, free_editable_object_data); -} - -void -caja_undo_tear_down_editable_for_undo (GtkEditable *editable) -{ - if (!GTK_IS_EDITABLE (editable) ) - { - return; - } - - /* Disconnect from entry signals */ - g_signal_handlers_disconnect_by_func - (editable, G_CALLBACK (editable_insert_text_callback), NULL); - g_signal_handlers_disconnect_by_func - (editable, G_CALLBACK (editable_delete_text_callback), NULL); -} - -/* restore_editable_from_undo_snapshot_callback - * - * Restore edited text. - */ -static void -restore_editable_from_undo_snapshot_callback (GObject *target, gpointer callback_data) -{ - GtkEditable *editable; - GtkWindow *window; - EditableUndoData *undo_data; - EditableUndoObjectData *data; - gint position; - - editable = GTK_EDITABLE (target); - undo_data = (EditableUndoData *) callback_data; - - /* Check our undo registered flag */ - data = g_object_get_data (target, "undo_registered"); - if (data == NULL) - { - g_warning ("Undo regisetred flag not found"); - return; - } - - /* Reset the registered flag so we get a new item for future editing. */ - data->undo_registered = FALSE; - - /* Register a new undo transaction for redo. */ - editable_register_edit_undo (editable); - - /* Restore the text. */ - position = 0; - gtk_editable_delete_text (editable, 0, -1); - gtk_editable_insert_text (editable, undo_data->undo_text, - strlen (undo_data->undo_text), &position); - - /* Set focus to widget */ - window = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (target))); - gtk_window_set_focus (window, GTK_WIDGET (editable)); - - /* We have to do this call, because the previous call selects all text */ - gtk_editable_select_region (editable, 0, 0); - - /* Restore selection */ - gtk_editable_select_region (editable, undo_data->selection_start, - undo_data->selection_end); - - /* Set the i-beam to the saved position */ - gtk_editable_set_position (editable, undo_data->position); - - /* Reset the registered flag so we get a new item for future editing. */ - data->undo_registered = FALSE; -} - - -/* editable_set_undo_key - * - * Allow the use of ctrl-z from within widget. - */ - -/* Undo is disabled until we have a better implementation. - * Both here and in caja-shell-ui.xml. - */ - -/* FIXME bugzilla.gnome.org 43515: Undo doesn't work */ -#ifdef UNDO_ENABLED - -static gboolean -editable_key_press_event (GtkEditable *editable, GdkEventKey *event, gpointer user_data) -{ - switch (event->keyval) - { - /* Undo */ - case 'z': - if ((event->state & GDK_CONTROL_MASK) != 0) - { - caja_undo (GTK_OBJECT (editable)); - return TRUE; - } - break; - - default: - break; - } - - return FALSE; -} - -#endif - -/* editable_set_undo_key - * - * Allow the use of ctrl-z from within widget. This should only be - * set if there is no menu bar to use to undo the widget. - */ - -void -caja_undo_editable_set_undo_key (GtkEditable *editable, gboolean value) -{ - /* FIXME bugzilla.gnome.org 43515: Undo doesn't work */ -#ifdef UNDO_ENABLED - if (value) - { - /* Connect to entry signals */ - g_signal_connect (editable, "key_press_event", - G_CALLBACK (editable_key_press_event), NULL); - } - else - { - /* FIXME bugzilla.gnome.org 45092: Warns if the handler - * is not already connected. We could use object data - * to prevent that little problem. - */ - g_signal_disconnect_by_func (editable, - G_CALLBACK (editable_key_press_event), NULL); - } -#endif -} -- cgit v1.2.1