/* GAIL - The GNOME Accessibility Implementation Library * Copyright 2001, 2002, 2003 Sun Microsystems Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "config.h" #include #include "gailcontainer.h" static void gail_container_class_init (GailContainerClass *klass); static void gail_container_init (GailContainer *container); static gint gail_container_get_n_children (AtkObject *obj); static AtkObject* gail_container_ref_child (AtkObject *obj, gint i); static gint gail_container_add_gtk (GtkContainer *container, GtkWidget *widget, gpointer data); static gint gail_container_remove_gtk (GtkContainer *container, GtkWidget *widget, gpointer data); static gint gail_container_real_add_gtk (GtkContainer *container, GtkWidget *widget, gpointer data); static gint gail_container_real_remove_gtk (GtkContainer *container, GtkWidget *widget, gpointer data); static void gail_container_real_initialize (AtkObject *obj, gpointer data); static void gail_container_finalize (GObject *object); G_DEFINE_TYPE (GailContainer, gail_container, GAIL_TYPE_WIDGET) static void gail_container_class_init (GailContainerClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); AtkObjectClass *class = ATK_OBJECT_CLASS (klass); gobject_class->finalize = gail_container_finalize; class->get_n_children = gail_container_get_n_children; class->ref_child = gail_container_ref_child; class->initialize = gail_container_real_initialize; klass->add_gtk = gail_container_real_add_gtk; klass->remove_gtk = gail_container_real_remove_gtk; } static void gail_container_init (GailContainer *container) { container->children = NULL; } static gint gail_container_get_n_children (AtkObject* obj) { GtkWidget *widget; GList *children; gint count = 0; g_return_val_if_fail (GAIL_IS_CONTAINER (obj), count); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj)); if (widget == NULL) return 0; children = gtk_container_get_children (GTK_CONTAINER(widget)); count = g_list_length (children); g_list_free (children); return count; } static AtkObject* gail_container_ref_child (AtkObject *obj, gint i) { GList *children, *tmp_list; AtkObject *accessible; GtkWidget *widget; g_return_val_if_fail (GAIL_IS_CONTAINER (obj), NULL); g_return_val_if_fail ((i >= 0), NULL); widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj)); if (widget == NULL) return NULL; children = gtk_container_get_children (GTK_CONTAINER (widget)); tmp_list = g_list_nth (children, i); if (!tmp_list) { g_list_free (children); return NULL; } accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data)); g_list_free (children); g_object_ref (accessible); return accessible; } static gint gail_container_add_gtk (GtkContainer *container, GtkWidget *widget, gpointer data) { GailContainer *gail_container = GAIL_CONTAINER (data); GailContainerClass *klass; klass = GAIL_CONTAINER_GET_CLASS (gail_container); if (klass->add_gtk) return klass->add_gtk (container, widget, data); else return 1; } static gint gail_container_remove_gtk (GtkContainer *container, GtkWidget *widget, gpointer data) { GailContainer *gail_container = GAIL_CONTAINER (data); GailContainerClass *klass; klass = GAIL_CONTAINER_GET_CLASS (gail_container); if (klass->remove_gtk) return klass->remove_gtk (container, widget, data); else return 1; } static gint gail_container_real_add_gtk (GtkContainer *container, GtkWidget *widget, gpointer data) { AtkObject* atk_parent = ATK_OBJECT (data); AtkObject* atk_child = gtk_widget_get_accessible (widget); GailContainer *gail_container = GAIL_CONTAINER (atk_parent); gint index; g_object_notify (G_OBJECT (atk_child), "accessible_parent"); g_list_free (gail_container->children); gail_container->children = gtk_container_get_children (container); index = g_list_index (gail_container->children, widget); g_signal_emit_by_name (atk_parent, "children_changed::add", index, atk_child, NULL); return 1; } static gint gail_container_real_remove_gtk (GtkContainer *container, GtkWidget *widget, gpointer data) { AtkPropertyValues values = { NULL }; AtkObject* atk_parent; AtkObject *atk_child; GailContainer *gail_container; gint index; atk_parent = ATK_OBJECT (data); atk_child = gtk_widget_get_accessible (widget); if (atk_child) { g_value_init (&values.old_value, G_TYPE_POINTER); g_value_set_pointer (&values.old_value, atk_parent); values.property_name = "accessible-parent"; g_object_ref (atk_child); g_signal_emit_by_name (atk_child, "property_change::accessible-parent", &values, NULL); g_object_unref (atk_child); } gail_container = GAIL_CONTAINER (atk_parent); index = g_list_index (gail_container->children, widget); g_list_free (gail_container->children); gail_container->children = gtk_container_get_children (container); if (index >= 0 && index <= g_list_length (gail_container->children)) g_signal_emit_by_name (atk_parent, "children_changed::remove", index, atk_child, NULL); return 1; } static void gail_container_real_initialize (AtkObject *obj, gpointer data) { GailContainer *container = GAIL_CONTAINER (obj); guint handler_id; ATK_OBJECT_CLASS (gail_container_parent_class)->initialize (obj, data); container->children = gtk_container_get_children (GTK_CONTAINER (data)); /* * We store the handler ids for these signals in case some objects * need to remove these handlers. */ handler_id = g_signal_connect (data, "add", G_CALLBACK (gail_container_add_gtk), obj); g_object_set_data (G_OBJECT (obj), "gail-add-handler-id", GUINT_TO_POINTER (handler_id)); handler_id = g_signal_connect (data, "remove", G_CALLBACK (gail_container_remove_gtk), obj); g_object_set_data (G_OBJECT (obj), "gail-remove-handler-id", GUINT_TO_POINTER (handler_id)); if (GTK_IS_TOOLBAR (data)) obj->role = ATK_ROLE_TOOL_BAR; else if (GTK_IS_VIEWPORT (data)) obj->role = ATK_ROLE_VIEWPORT; else obj->role = ATK_ROLE_PANEL; } static void gail_container_finalize (GObject *object) { GailContainer *container = GAIL_CONTAINER (object); g_list_free (container->children); G_OBJECT_CLASS (gail_container_parent_class)->finalize (object); }