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/* GTK+ - accessibility implementations
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gtk/gtk.h>
#include "gtkscrolledwindowaccessible.h"
G_DEFINE_TYPE (GtkScrolledWindowAccessible, gtk_scrolled_window_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE)
static void
visibility_changed (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
if (!g_strcmp0 (pspec->name, "visible"))
{
gint index;
gint n_children;
gboolean child_added = FALSE;
GList *children;
AtkObject *child;
GtkWidget *widget;
GtkScrolledWindow *scrolled_window;
GtkWidget *hscrollbar, *vscrollbar;
GtkAccessible *accessible = GTK_ACCESSIBLE (user_data);
widget = gtk_accessible_get_widget (user_data);
if (widget == NULL)
return;
scrolled_window = GTK_SCROLLED_WINDOW (widget);
children = gtk_container_get_children (GTK_CONTAINER (widget));
index = n_children = g_list_length (children);
g_list_free (children);
hscrollbar = gtk_scrolled_window_get_hscrollbar (scrolled_window);
vscrollbar = gtk_scrolled_window_get_vscrollbar (scrolled_window);
if ((gpointer) object == (gpointer) (hscrollbar))
{
if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
child_added = TRUE;
child = gtk_widget_get_accessible (hscrollbar);
}
else if ((gpointer) object == (gpointer) (vscrollbar))
{
if (gtk_scrolled_window_get_vscrollbar (scrolled_window))
child_added = TRUE;
child = gtk_widget_get_accessible (vscrollbar);
if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
index = n_children + 1;
}
else
{
g_assert_not_reached ();
return;
}
if (child_added)
g_signal_emit_by_name (accessible, "children-changed::add", index, child, NULL);
else
g_signal_emit_by_name (accessible, "children-changed::remove", index, child, NULL);
}
}
static void
gtk_scrolled_window_accessible_initialize (AtkObject *obj,
gpointer data)
{
GtkScrolledWindow *window;
ATK_OBJECT_CLASS (gtk_scrolled_window_accessible_parent_class)->initialize (obj, data);
window = GTK_SCROLLED_WINDOW (data);
g_signal_connect_object (gtk_scrolled_window_get_hscrollbar (window), "notify::visible",
G_CALLBACK (visibility_changed),
obj, 0);
g_signal_connect_object (gtk_scrolled_window_get_vscrollbar (window), "notify::visible",
G_CALLBACK (visibility_changed),
obj, 0);
obj->role = ATK_ROLE_SCROLL_PANE;
}
static gint
gtk_scrolled_window_accessible_get_n_children (AtkObject *object)
{
GtkWidget *widget;
GtkScrolledWindow *scrolled_window;
GList *children;
gint n_children;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
if (widget == NULL)
return 0;
scrolled_window = GTK_SCROLLED_WINDOW (widget);
children = gtk_container_get_children (GTK_CONTAINER (widget));
n_children = g_list_length (children);
g_list_free (children);
if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
n_children++;
if (gtk_scrolled_window_get_vscrollbar (scrolled_window))
n_children++;
return n_children;
}
static AtkObject *
gtk_scrolled_window_accessible_ref_child (AtkObject *obj,
gint child)
{
GtkWidget *widget;
GtkScrolledWindow *scrolled_window;
GtkWidget *hscrollbar, *vscrollbar;
GList *children, *tmp_list;
gint n_children;
AtkObject *accessible = NULL;
g_return_val_if_fail (child >= 0, NULL);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget == NULL)
return NULL;
scrolled_window = GTK_SCROLLED_WINDOW (widget);
hscrollbar = gtk_scrolled_window_get_hscrollbar (scrolled_window);
vscrollbar = gtk_scrolled_window_get_vscrollbar (scrolled_window);
children = gtk_container_get_children (GTK_CONTAINER (widget));
n_children = g_list_length (children);
if (child == n_children)
{
if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
accessible = gtk_widget_get_accessible (hscrollbar);
else if (gtk_scrolled_window_get_vscrollbar (scrolled_window))
accessible = gtk_widget_get_accessible (vscrollbar);
}
else if (child == n_children + 1 &&
gtk_scrolled_window_get_hscrollbar (scrolled_window) &&
gtk_scrolled_window_get_vscrollbar (scrolled_window))
accessible = gtk_widget_get_accessible (vscrollbar);
else if (child < n_children)
{
tmp_list = g_list_nth (children, child);
if (tmp_list)
accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
}
g_list_free (children);
if (accessible)
g_object_ref (accessible);
return accessible;
}
static void
gtk_scrolled_window_accessible_class_init (GtkScrolledWindowAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
class->get_n_children = gtk_scrolled_window_accessible_get_n_children;
class->ref_child = gtk_scrolled_window_accessible_ref_child;
class->initialize = gtk_scrolled_window_accessible_initialize;
}
static void
gtk_scrolled_window_accessible_init (GtkScrolledWindowAccessible *window)
{
}
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