mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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269 lines
8.6 KiB
C
269 lines
8.6 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2001, 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 <gtk/gtk.h>
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#include "gailcontainer.h"
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static void gail_container_class_init (GailContainerClass *klass);
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static void gail_container_init (GailContainer *container);
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static gint gail_container_get_n_children (AtkObject *obj);
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static AtkObject* gail_container_ref_child (AtkObject *obj,
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gint i);
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static gint gail_container_add_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data);
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static gint gail_container_remove_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data);
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static gint gail_container_real_add_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data);
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static gint gail_container_real_remove_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data);
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static void gail_container_real_initialize (AtkObject *obj,
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gpointer data);
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static void gail_container_finalize (GObject *object);
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G_DEFINE_TYPE (GailContainer, gail_container, GAIL_TYPE_WIDGET)
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static void
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gail_container_class_init (GailContainerClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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gobject_class->finalize = gail_container_finalize;
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class->get_n_children = gail_container_get_n_children;
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class->ref_child = gail_container_ref_child;
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class->initialize = gail_container_real_initialize;
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klass->add_gtk = gail_container_real_add_gtk;
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klass->remove_gtk = gail_container_real_remove_gtk;
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}
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static void
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gail_container_init (GailContainer *container)
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{
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container->children = NULL;
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}
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AtkObject*
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gail_container_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_CONTAINER (widget), NULL);
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object = g_object_new (GAIL_TYPE_CONTAINER, 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 gint
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gail_container_get_n_children (AtkObject* obj)
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{
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GtkWidget *widget;
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GList *children;
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gint count = 0;
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g_return_val_if_fail (GAIL_IS_CONTAINER (obj), count);
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widget = GTK_ACCESSIBLE (obj)->widget;
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if (widget == NULL)
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return 0;
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children = gtk_container_get_children (GTK_CONTAINER(widget));
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count = g_list_length (children);
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g_list_free (children);
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return count;
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}
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static AtkObject*
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gail_container_ref_child (AtkObject *obj,
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gint i)
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{
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GList *children, *tmp_list;
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AtkObject *accessible;
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GtkWidget *widget;
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g_return_val_if_fail (GAIL_IS_CONTAINER (obj), NULL);
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g_return_val_if_fail ((i >= 0), NULL);
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widget = GTK_ACCESSIBLE (obj)->widget;
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if (widget == NULL)
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return NULL;
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children = gtk_container_get_children (GTK_CONTAINER (widget));
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tmp_list = g_list_nth (children, i);
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if (!tmp_list)
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{
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g_list_free (children);
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return NULL;
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}
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accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
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g_list_free (children);
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g_object_ref (accessible);
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return accessible;
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}
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static gint
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gail_container_add_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data)
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{
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GailContainer *gail_container = GAIL_CONTAINER (data);
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GailContainerClass *klass;
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klass = GAIL_CONTAINER_GET_CLASS (gail_container);
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if (klass->add_gtk)
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return klass->add_gtk (container, widget, data);
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else
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return 1;
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}
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static gint
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gail_container_remove_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data)
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{
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GailContainer *gail_container = GAIL_CONTAINER (data);
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GailContainerClass *klass;
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klass = GAIL_CONTAINER_GET_CLASS (gail_container);
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if (klass->remove_gtk)
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return klass->remove_gtk (container, widget, data);
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else
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return 1;
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}
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static gint
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gail_container_real_add_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data)
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{
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AtkObject* atk_parent = ATK_OBJECT (data);
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AtkObject* atk_child = gtk_widget_get_accessible (widget);
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GailContainer *gail_container = GAIL_CONTAINER (atk_parent);
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gint index;
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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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return 1;
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}
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static gint
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gail_container_real_remove_gtk (GtkContainer *container,
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GtkWidget *widget,
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gpointer data)
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{
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AtkPropertyValues values = { NULL };
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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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atk_parent = ATK_OBJECT (data);
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atk_child = gtk_widget_get_accessible (widget);
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if (atk_child)
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{
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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_object_ref (atk_child);
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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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g_object_unref (atk_child);
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}
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gail_container = GAIL_CONTAINER (atk_parent);
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index = g_list_index (gail_container->children, widget);
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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 <= g_list_length (gail_container->children))
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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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return 1;
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}
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static void
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gail_container_real_initialize (AtkObject *obj,
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gpointer data)
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{
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GailContainer *container = GAIL_CONTAINER (obj);
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guint handler_id;
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ATK_OBJECT_CLASS (gail_container_parent_class)->initialize (obj, data);
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container->children = gtk_container_get_children (GTK_CONTAINER (data));
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/*
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* We store the handler ids for these signals in case some objects
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* need to remove these handlers.
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*/
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handler_id = g_signal_connect (data,
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"add",
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G_CALLBACK (gail_container_add_gtk),
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obj);
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g_object_set_data (G_OBJECT (obj), "gail-add-handler-id",
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GUINT_TO_POINTER (handler_id));
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handler_id = g_signal_connect (data,
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"remove",
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G_CALLBACK (gail_container_remove_gtk),
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obj);
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g_object_set_data (G_OBJECT (obj), "gail-remove-handler-id",
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GUINT_TO_POINTER (handler_id));
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if (GTK_IS_TOOLBAR (data))
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obj->role = ATK_ROLE_TOOL_BAR;
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else if (GTK_IS_VIEWPORT (data))
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obj->role = ATK_ROLE_VIEWPORT;
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else
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obj->role = ATK_ROLE_PANEL;
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}
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static void
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gail_container_finalize (GObject *object)
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{
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GailContainer *container = GAIL_CONTAINER (object);
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g_list_free (container->children);
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G_OBJECT_CLASS (gail_container_parent_class)->finalize (object);
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}
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