1 /* GAIL - The GNOME Accessibility Enabling Library
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, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
22 #include "gailscrolledwindow.h"
25 static void gail_scrolled_window_class_init (GailScrolledWindowClass *klass);
26 static void gail_scrolled_window_real_initialize
30 static gint gail_scrolled_window_get_n_children (AtkObject *object);
31 static AtkObject* gail_scrolled_window_ref_child (AtkObject *obj,
33 static void gail_scrolled_window_scrollbar_visibility_changed
38 static GailContainerClass *parent_class = NULL;
41 gail_scrolled_window_get_type (void)
43 static GType type = 0;
47 static const GTypeInfo tinfo =
49 sizeof (GailScrolledWindowClass),
50 (GBaseInitFunc) NULL, /* base init */
51 (GBaseFinalizeFunc) NULL, /* base finalize */
52 (GClassInitFunc) gail_scrolled_window_class_init, /* class init */
53 (GClassFinalizeFunc) NULL, /* class finalize */
54 NULL, /* class data */
55 sizeof (GailScrolledWindow), /* instance size */
57 (GInstanceInitFunc) NULL, /* instance init */
58 NULL /* value table */
61 type = g_type_register_static (GAIL_TYPE_CONTAINER,
62 "GailScrolledWindow", &tinfo, 0);
68 gail_scrolled_window_class_init (GailScrolledWindowClass *klass)
70 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
72 parent_class = g_type_class_peek_parent (klass);
74 class->get_n_children = gail_scrolled_window_get_n_children;
75 class->ref_child = gail_scrolled_window_ref_child;
76 class->initialize = gail_scrolled_window_real_initialize;
80 gail_scrolled_window_new (GtkWidget *widget)
83 AtkObject *accessible;
85 g_return_val_if_fail (GTK_IS_SCROLLED_WINDOW (widget), NULL);
87 object = g_object_new (GAIL_TYPE_SCROLLED_WINDOW, NULL);
89 accessible = ATK_OBJECT (object);
90 atk_object_initialize (accessible, widget);
96 gail_scrolled_window_real_initialize (AtkObject *obj,
99 GtkScrolledWindow *window;
101 ATK_OBJECT_CLASS (parent_class)->initialize (obj, data);
103 window = GTK_SCROLLED_WINDOW (data);
104 g_signal_connect_data (window->hscrollbar, "notify::visible",
105 (GCallback)gail_scrolled_window_scrollbar_visibility_changed,
107 g_signal_connect_data (window->vscrollbar, "notify::visible",
108 (GCallback)gail_scrolled_window_scrollbar_visibility_changed,
111 obj->role = ATK_ROLE_SCROLL_PANE;
115 gail_scrolled_window_get_n_children (AtkObject *object)
118 GtkScrolledWindow *gtk_window;
122 widget = GTK_ACCESSIBLE (object)->widget;
124 /* Object is defunct */
127 gtk_window = GTK_SCROLLED_WINDOW (widget);
129 /* Get the number of children returned by the backing GtkScrolledWindow */
131 children = gtk_container_get_children (GTK_CONTAINER(gtk_window));
132 n_children = g_list_length (children);
133 g_list_free (children);
135 /* Add one to the count for each visible scrollbar */
137 if (gtk_window->hscrollbar_visible)
139 if (gtk_window->vscrollbar_visible)
145 gail_scrolled_window_ref_child (AtkObject *obj,
149 GtkScrolledWindow *gtk_window;
150 GList *children, *tmp_list;
152 AtkObject *accessible = NULL;
154 g_return_val_if_fail (child >= 0, NULL);
156 widget = GTK_ACCESSIBLE (obj)->widget;
158 /* Object is defunct */
161 gtk_window = GTK_SCROLLED_WINDOW (widget);
163 children = gtk_container_get_children (GTK_CONTAINER (gtk_window));
164 n_children = g_list_length (children);
166 if (child == n_children)
168 if (gtk_window->hscrollbar_visible)
169 accessible = gtk_widget_get_accessible (gtk_window->hscrollbar);
170 else if (gtk_window->vscrollbar_visible)
171 accessible = gtk_widget_get_accessible (gtk_window->vscrollbar);
173 else if (child == n_children+1 &&
174 gtk_window->hscrollbar_visible &&
175 gtk_window->vscrollbar_visible)
176 accessible = gtk_widget_get_accessible (gtk_window->vscrollbar);
177 else if (child < n_children)
179 tmp_list = g_list_nth (children, child);
181 accessible = gtk_widget_get_accessible (
182 GTK_WIDGET (tmp_list->data));
185 g_list_free (children);
187 g_object_ref (accessible);
192 gail_scrolled_window_scrollbar_visibility_changed (GObject *object,
196 if (!strcmp (pspec->name, "visible"))
200 gboolean child_added = FALSE;
203 GtkScrolledWindow *gtk_window;
204 GailScrolledWindow *gail_window = GAIL_SCROLLED_WINDOW (user_data);
207 gtk_window = GTK_SCROLLED_WINDOW (GTK_ACCESSIBLE (user_data)->widget);
208 if (gtk_window == NULL)
210 children = gtk_container_get_children (GTK_CONTAINER (gtk_window));
211 index = n_children = g_list_length (children);
212 g_list_free (children);
214 if ((gpointer) object == (gpointer) (gtk_window->hscrollbar))
216 if (gtk_window->hscrollbar_visible)
219 child = gtk_widget_get_accessible (gtk_window->hscrollbar);
221 else if ((gpointer) object == (gpointer) (gtk_window->vscrollbar))
223 if (gtk_window->vscrollbar_visible)
226 child = gtk_widget_get_accessible (gtk_window->vscrollbar);
227 if (gtk_window->hscrollbar_visible)
228 index = n_children+1;
232 g_assert_not_reached ();
237 signal_name = "children_changed::add";
239 signal_name = "children_changed::delete";
241 g_signal_emit_by_name (gail_window, signal_name, index, child, NULL);