1 /* GTK+ - accessibility implementations
2 * Copyright 2001, 2002, 2003 Sun Microsystems Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
21 #include "gtkscrolledwindowaccessible.h"
24 G_DEFINE_TYPE (GtkScrolledWindowAccessible, gtk_scrolled_window_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE)
27 visibility_changed (GObject *object,
31 if (!g_strcmp0 (pspec->name, "visible"))
35 gboolean child_added = FALSE;
39 GtkScrolledWindow *scrolled_window;
40 GtkWidget *hscrollbar, *vscrollbar;
41 GtkAccessible *accessible = GTK_ACCESSIBLE (user_data);
43 widget = gtk_accessible_get_widget (user_data);
47 scrolled_window = GTK_SCROLLED_WINDOW (widget);
48 children = gtk_container_get_children (GTK_CONTAINER (widget));
49 index = n_children = g_list_length (children);
50 g_list_free (children);
52 hscrollbar = gtk_scrolled_window_get_hscrollbar (scrolled_window);
53 vscrollbar = gtk_scrolled_window_get_vscrollbar (scrolled_window);
55 if ((gpointer) object == (gpointer) (hscrollbar))
57 if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
60 child = gtk_widget_get_accessible (hscrollbar);
62 else if ((gpointer) object == (gpointer) (vscrollbar))
64 if (gtk_scrolled_window_get_vscrollbar (scrolled_window))
67 child = gtk_widget_get_accessible (vscrollbar);
68 if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
69 index = n_children + 1;
73 g_assert_not_reached ();
78 g_signal_emit_by_name (accessible, "children-changed::add", index, child, NULL);
80 g_signal_emit_by_name (accessible, "children-changed::remove", index, child, NULL);
86 gtk_scrolled_window_accessible_initialize (AtkObject *obj,
89 GtkScrolledWindow *window;
91 ATK_OBJECT_CLASS (gtk_scrolled_window_accessible_parent_class)->initialize (obj, data);
93 window = GTK_SCROLLED_WINDOW (data);
95 g_signal_connect_data (gtk_scrolled_window_get_hscrollbar (window), "notify::visible",
96 G_CALLBACK (visibility_changed),
98 g_signal_connect_data (gtk_scrolled_window_get_vscrollbar (window), "notify::visible",
99 G_CALLBACK (visibility_changed),
102 obj->role = ATK_ROLE_SCROLL_PANE;
106 gtk_scrolled_window_accessible_get_n_children (AtkObject *object)
109 GtkScrolledWindow *scrolled_window;
113 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
117 scrolled_window = GTK_SCROLLED_WINDOW (widget);
119 children = gtk_container_get_children (GTK_CONTAINER (widget));
120 n_children = g_list_length (children);
121 g_list_free (children);
123 if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
125 if (gtk_scrolled_window_get_vscrollbar (scrolled_window))
132 gtk_scrolled_window_accessible_ref_child (AtkObject *obj,
136 GtkScrolledWindow *scrolled_window;
137 GtkWidget *hscrollbar, *vscrollbar;
138 GList *children, *tmp_list;
140 AtkObject *accessible = NULL;
142 g_return_val_if_fail (child >= 0, NULL);
144 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
148 scrolled_window = GTK_SCROLLED_WINDOW (widget);
149 hscrollbar = gtk_scrolled_window_get_hscrollbar (scrolled_window);
150 vscrollbar = gtk_scrolled_window_get_vscrollbar (scrolled_window);
152 children = gtk_container_get_children (GTK_CONTAINER (widget));
153 n_children = g_list_length (children);
155 if (child == n_children)
157 if (gtk_scrolled_window_get_hscrollbar (scrolled_window))
158 accessible = gtk_widget_get_accessible (hscrollbar);
159 else if (gtk_scrolled_window_get_vscrollbar (scrolled_window))
160 accessible = gtk_widget_get_accessible (vscrollbar);
162 else if (child == n_children + 1 &&
163 gtk_scrolled_window_get_hscrollbar (scrolled_window) &&
164 gtk_scrolled_window_get_vscrollbar (scrolled_window))
165 accessible = gtk_widget_get_accessible (vscrollbar);
166 else if (child < n_children)
168 tmp_list = g_list_nth (children, child);
170 accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
173 g_list_free (children);
175 g_object_ref (accessible);
181 gtk_scrolled_window_accessible_class_init (GtkScrolledWindowAccessibleClass *klass)
183 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
185 class->get_n_children = gtk_scrolled_window_accessible_get_n_children;
186 class->ref_child = gtk_scrolled_window_accessible_ref_child;
187 class->initialize = gtk_scrolled_window_accessible_initialize;
191 gtk_scrolled_window_accessible_init (GtkScrolledWindowAccessible *window)