forked from AuroraMiddleware/gtk
7650482e46
The accessible implementations should really be folded into gtk proper. Until that happens, we need some more guts exposed...
363 lines
11 KiB
C
363 lines
11 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2002, 2003 Sun Microsystems Inc.
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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 Lesser 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser 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 "gailsubmenuitem.h"
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static void gail_sub_menu_item_class_init (GailSubMenuItemClass *klass);
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static void gail_sub_menu_item_init (GailSubMenuItem *item);
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static void gail_sub_menu_item_real_initialize (AtkObject *obj,
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gpointer data);
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static void atk_selection_interface_init (AtkSelectionIface *iface);
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static gboolean gail_sub_menu_item_add_selection (AtkSelection *selection,
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gint i);
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static gboolean gail_sub_menu_item_clear_selection (AtkSelection *selection);
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static AtkObject* gail_sub_menu_item_ref_selection (AtkSelection *selection,
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gint i);
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static gint gail_sub_menu_item_get_selection_count
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(AtkSelection *selection);
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static gboolean gail_sub_menu_item_is_child_selected
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(AtkSelection *selection,
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gint i);
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static gboolean gail_sub_menu_item_remove_selection (AtkSelection *selection,
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gint i);
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static gint menu_item_add_gtk (GtkContainer *container,
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GtkWidget *widget);
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static gint menu_item_remove_gtk (GtkContainer *container,
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GtkWidget *widget);
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G_DEFINE_TYPE_WITH_CODE (GailSubMenuItem, gail_sub_menu_item, GAIL_TYPE_MENU_ITEM,
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G_IMPLEMENT_INTERFACE (ATK_TYPE_SELECTION, atk_selection_interface_init))
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static void
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gail_sub_menu_item_class_init (GailSubMenuItemClass *klass)
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{
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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class->initialize = gail_sub_menu_item_real_initialize;
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}
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static void
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gail_sub_menu_item_init (GailSubMenuItem *item)
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{
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}
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static void
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gail_sub_menu_item_real_initialize (AtkObject *obj,
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gpointer data)
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{
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GtkWidget *submenu;
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ATK_OBJECT_CLASS (gail_sub_menu_item_parent_class)->initialize (obj, data);
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (data));
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g_return_if_fail (submenu);
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g_signal_connect (submenu,
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"add",
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G_CALLBACK (menu_item_add_gtk),
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NULL);
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g_signal_connect (submenu,
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"remove",
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G_CALLBACK (menu_item_remove_gtk),
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NULL);
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obj->role = ATK_ROLE_MENU;
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}
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AtkObject*
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gail_sub_menu_item_new (GtkWidget *widget)
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{
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GObject *object;
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AtkObject *accessible;
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g_return_val_if_fail (GTK_IS_MENU_ITEM (widget), NULL);
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object = g_object_new (GAIL_TYPE_SUB_MENU_ITEM, NULL);
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accessible = ATK_OBJECT (object);
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atk_object_initialize (accessible, widget);
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return accessible;
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}
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static void
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atk_selection_interface_init (AtkSelectionIface *iface)
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{
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iface->add_selection = gail_sub_menu_item_add_selection;
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iface->clear_selection = gail_sub_menu_item_clear_selection;
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iface->ref_selection = gail_sub_menu_item_ref_selection;
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iface->get_selection_count = gail_sub_menu_item_get_selection_count;
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iface->is_child_selected = gail_sub_menu_item_is_child_selected;
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iface->remove_selection = gail_sub_menu_item_remove_selection;
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/*
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* select_all_selection does not make sense for a submenu of a menu item
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* so no implementation is provided.
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*/
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}
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static gboolean
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gail_sub_menu_item_add_selection (AtkSelection *selection,
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gint i)
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{
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GtkMenuShell *shell;
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GList *kids;
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guint length;
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GtkWidget *widget;
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GtkWidget *submenu;
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GtkWidget *child;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
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if (widget == NULL)
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/* State is defunct */
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return FALSE;
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
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g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
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shell = GTK_MENU_SHELL (submenu);
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kids = gtk_container_get_children (GTK_CONTAINER (shell));
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length = g_list_length (kids);
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if (i < 0 || i > length)
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{
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g_list_free (kids);
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return FALSE;
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}
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child = g_list_nth_data (kids, i);
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g_list_free (kids);
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g_return_val_if_fail (GTK_IS_MENU_ITEM(child), FALSE);
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gtk_menu_shell_select_item (shell, GTK_WIDGET (child));
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return TRUE;
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}
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static gboolean
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gail_sub_menu_item_clear_selection (AtkSelection *selection)
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{
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GtkMenuShell *shell;
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GtkWidget *widget;
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GtkWidget *submenu;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
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if (widget == NULL)
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/* State is defunct */
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return FALSE;
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
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g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
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shell = GTK_MENU_SHELL (submenu);
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gtk_menu_shell_deselect (shell);
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return TRUE;
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}
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static AtkObject*
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gail_sub_menu_item_ref_selection (AtkSelection *selection,
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gint i)
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{
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GtkMenuShell *shell;
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AtkObject *obj;
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GtkWidget *widget;
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GtkWidget *submenu;
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GtkWidget *item;
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if (i != 0)
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return NULL;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
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if (widget == NULL)
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/* State is defunct */
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return NULL;
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
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g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), NULL);
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shell = GTK_MENU_SHELL (submenu);
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item = gtk_menu_shell_get_selected_item (shell);
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if (item != NULL)
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{
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obj = gtk_widget_get_accessible (item);
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g_object_ref (obj);
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return obj;
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}
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else
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{
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return NULL;
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}
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}
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static gint
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gail_sub_menu_item_get_selection_count (AtkSelection *selection)
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{
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GtkMenuShell *shell;
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GtkWidget *widget;
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GtkWidget *submenu;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
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if (widget == NULL)
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/* State is defunct */
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return 0;
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
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g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
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shell = GTK_MENU_SHELL (submenu);
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/*
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* Identifies the currently selected menu item
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*/
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if (gtk_menu_shell_get_selected_item (shell) == NULL)
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return 0;
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else
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return 1;
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}
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static gboolean
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gail_sub_menu_item_is_child_selected (AtkSelection *selection,
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gint i)
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{
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GtkMenuShell *shell;
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gint j;
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GtkWidget *widget;
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GtkWidget *submenu;
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GtkWidget *item;
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GList *kids;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
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if (widget == NULL)
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/* State is defunct */
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return FALSE;
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
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g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
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shell = GTK_MENU_SHELL (submenu);
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item = gtk_menu_shell_get_selected_item (shell);
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if (item == NULL)
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return FALSE;
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kids = gtk_container_get_children (GTK_CONTAINER (shell));
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j = g_list_index (kids, item);
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g_list_free (kids);
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return (j==i);
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}
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static gboolean
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gail_sub_menu_item_remove_selection (AtkSelection *selection,
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gint i)
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{
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GtkMenuShell *shell;
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GtkWidget *widget;
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GtkWidget *submenu;
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GtkWidget *item;
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if (i != 0)
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return FALSE;
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widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
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if (widget == NULL)
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/* State is defunct */
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return FALSE;
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submenu = gtk_menu_item_get_submenu (GTK_MENU_ITEM (widget));
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g_return_val_if_fail (GTK_IS_MENU_SHELL (submenu), FALSE);
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shell = GTK_MENU_SHELL (submenu);
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item = gtk_menu_shell_get_selected_item (shell);
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if (item && gtk_menu_item_get_submenu (GTK_MENU_ITEM (item)))
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{
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/*
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* Menu item contains a menu and it is the selected menu item
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* so deselect it.
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*/
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gtk_menu_shell_deselect (shell);
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}
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return TRUE;
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}
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static gint
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menu_item_add_gtk (GtkContainer *container,
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GtkWidget *widget)
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{
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GtkWidget *parent_widget;
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AtkObject *atk_parent;
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AtkObject *atk_child;
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GailContainer *gail_container;
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gint index;
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g_return_val_if_fail (GTK_IS_MENU (container), 1);
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parent_widget = gtk_menu_get_attach_widget (GTK_MENU (container));
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if (GTK_IS_MENU_ITEM (parent_widget))
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{
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atk_parent = gtk_widget_get_accessible (parent_widget);
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atk_child = gtk_widget_get_accessible (widget);
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gail_container = GAIL_CONTAINER (atk_parent);
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g_object_notify (G_OBJECT (atk_child), "accessible_parent");
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g_list_free (gail_container->children);
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gail_container->children = gtk_container_get_children (container);
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index = g_list_index (gail_container->children, widget);
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g_signal_emit_by_name (atk_parent, "children_changed::add",
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index, atk_child, NULL);
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}
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return 1;
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}
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static gint
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menu_item_remove_gtk (GtkContainer *container,
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GtkWidget *widget)
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{
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GtkWidget *parent_widget;
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AtkObject *atk_parent;
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AtkObject *atk_child;
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GailContainer *gail_container;
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AtkPropertyValues values = { NULL };
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gint index;
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gint list_length;
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g_return_val_if_fail (GTK_IS_MENU (container), 1);
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parent_widget = gtk_menu_get_attach_widget (GTK_MENU (container));
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if (GTK_IS_MENU_ITEM (parent_widget))
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{
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atk_parent = gtk_widget_get_accessible (parent_widget);
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atk_child = gtk_widget_get_accessible (widget);
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gail_container = GAIL_CONTAINER (atk_parent);
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g_value_init (&values.old_value, G_TYPE_POINTER);
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g_value_set_pointer (&values.old_value, atk_parent);
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values.property_name = "accessible-parent";
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g_signal_emit_by_name (atk_child,
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"property_change::accessible-parent", &values, NULL);
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index = g_list_index (gail_container->children, widget);
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list_length = g_list_length (gail_container->children);
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g_list_free (gail_container->children);
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gail_container->children = gtk_container_get_children (container);
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if (index >= 0 && index <= list_length)
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g_signal_emit_by_name (atk_parent, "children_changed::remove",
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index, atk_child, NULL);
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}
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return 1;
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}
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