1 /* GAIL - The GNOME Accessibility Implementation 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.
27 #include "gailtoplevel.h"
29 static void gail_toplevel_class_init (GailToplevelClass *klass);
30 static void gail_toplevel_init (GailToplevel *toplevel);
31 static void gail_toplevel_initialize (AtkObject *accessible,
33 static void gail_toplevel_object_finalize (GObject *obj);
37 static gint gail_toplevel_get_n_children (AtkObject *obj);
38 static AtkObject* gail_toplevel_ref_child (AtkObject *obj,
40 static AtkObject* gail_toplevel_get_parent (AtkObject *obj);
45 static void gail_toplevel_window_destroyed (GtkWindow *window,
47 static gboolean gail_toplevel_hide_event_watcher (GSignalInvocationHint *ihint,
49 const GValue *param_values,
51 static gboolean gail_toplevel_show_event_watcher (GSignalInvocationHint *ihint,
53 const GValue *param_values,
58 static void _gail_toplevel_remove_child (GailToplevel *toplevel,
60 static gboolean is_attached_menu_window (GtkWidget *widget);
61 static gboolean is_combo_window (GtkWidget *widget);
64 G_DEFINE_TYPE (GailToplevel, gail_toplevel, ATK_TYPE_OBJECT)
67 gail_toplevel_class_init (GailToplevelClass *klass)
69 AtkObjectClass *class = ATK_OBJECT_CLASS(klass);
70 GObjectClass *g_object_class = G_OBJECT_CLASS(klass);
72 class->initialize = gail_toplevel_initialize;
73 class->get_n_children = gail_toplevel_get_n_children;
74 class->ref_child = gail_toplevel_ref_child;
75 class->get_parent = gail_toplevel_get_parent;
77 g_object_class->finalize = gail_toplevel_object_finalize;
81 gail_toplevel_init (GailToplevel *toplevel)
88 l = toplevel->window_list = gtk_window_list_toplevels ();
92 window = GTK_WINDOW (l->data);
93 widget = GTK_WIDGET (window);
95 !gtk_widget_get_visible (widget) ||
96 is_attached_menu_window (widget) ||
97 #ifdef GDK_WINDOWING_X11
98 GTK_IS_PLUG (window) ||
100 gtk_widget_get_parent (GTK_WIDGET (window)))
102 GList *temp_l = l->next;
104 toplevel->window_list = g_list_delete_link (toplevel->window_list, l);
109 g_signal_connect (G_OBJECT (window),
111 G_CALLBACK (gail_toplevel_window_destroyed),
117 g_type_class_ref (GTK_TYPE_WINDOW);
119 signal_id = g_signal_lookup ("show", GTK_TYPE_WINDOW);
120 g_signal_add_emission_hook (signal_id, 0,
121 gail_toplevel_show_event_watcher, toplevel, (GDestroyNotify) NULL);
123 signal_id = g_signal_lookup ("hide", GTK_TYPE_WINDOW);
124 g_signal_add_emission_hook (signal_id, 0,
125 gail_toplevel_hide_event_watcher, toplevel, (GDestroyNotify) NULL);
129 gail_toplevel_initialize (AtkObject *accessible,
132 ATK_OBJECT_CLASS (gail_toplevel_parent_class)->initialize (accessible, data);
134 accessible->role = ATK_ROLE_APPLICATION;
135 accessible->name = g_get_prgname();
136 accessible->accessible_parent = NULL;
140 gail_toplevel_object_finalize (GObject *obj)
142 GailToplevel *toplevel = GAIL_TOPLEVEL (obj);
144 if (toplevel->window_list)
145 g_list_free (toplevel->window_list);
147 G_OBJECT_CLASS (gail_toplevel_parent_class)->finalize (obj);
151 gail_toplevel_get_parent (AtkObject *obj)
157 gail_toplevel_get_n_children (AtkObject *obj)
159 GailToplevel *toplevel = GAIL_TOPLEVEL (obj);
161 gint rc = g_list_length (toplevel->window_list);
166 gail_toplevel_ref_child (AtkObject *obj,
169 GailToplevel *toplevel;
174 toplevel = GAIL_TOPLEVEL (obj);
175 ptr = g_list_nth_data (toplevel->window_list, i);
178 widget = GTK_WIDGET (ptr);
179 atk_obj = gtk_widget_get_accessible (widget);
181 g_object_ref (atk_obj);
186 * Window destroy events on GtkWindow cause a child to be removed
190 gail_toplevel_window_destroyed (GtkWindow *window,
191 GailToplevel *toplevel)
193 _gail_toplevel_remove_child (toplevel, window);
197 * Show events cause a child to be added to the toplevel
200 gail_toplevel_show_event_watcher (GSignalInvocationHint *ihint,
201 guint n_param_values,
202 const GValue *param_values,
205 GailToplevel *toplevel = GAIL_TOPLEVEL (data);
206 AtkObject *atk_obj = ATK_OBJECT (toplevel);
212 object = g_value_get_object (param_values + 0);
214 if (!GTK_IS_WINDOW (object))
217 widget = GTK_WIDGET (object);
218 if (gtk_widget_get_parent (widget) ||
219 is_attached_menu_window (widget) ||
220 #ifdef GDK_WINDOWING_X11
221 GTK_IS_PLUG (widget) ||
223 is_combo_window (widget))
226 child = gtk_widget_get_accessible (widget);
227 if (atk_object_get_role (child) == ATK_ROLE_REDUNDANT_OBJECT)
233 * Add the window to the list & emit the signal.
234 * Don't do this for tooltips (Bug #150649).
236 if (atk_object_get_role (child) == ATK_ROLE_TOOL_TIP)
241 toplevel->window_list = g_list_append (toplevel->window_list, widget);
243 n_children = g_list_length (toplevel->window_list);
246 * Must subtract 1 from the n_children since the index is 0-based
247 * but g_list_length is 1-based.
249 atk_object_set_parent (child, atk_obj);
250 g_signal_emit_by_name (atk_obj, "children-changed::add",
254 /* Connect destroy signal callback */
255 g_signal_connect (G_OBJECT(object),
257 G_CALLBACK (gail_toplevel_window_destroyed),
264 * Hide events on GtkWindow cause a child to be removed from the toplevel
267 gail_toplevel_hide_event_watcher (GSignalInvocationHint *ihint,
268 guint n_param_values,
269 const GValue *param_values,
272 GailToplevel *toplevel = GAIL_TOPLEVEL (data);
275 object = g_value_get_object (param_values + 0);
277 if (!GTK_IS_WINDOW (object))
280 _gail_toplevel_remove_child (toplevel, GTK_WINDOW (object));
285 * Common code used by destroy and hide events on GtkWindow
288 _gail_toplevel_remove_child (GailToplevel *toplevel,
291 AtkObject *atk_obj = ATK_OBJECT (toplevel);
293 guint window_count = 0;
296 if (toplevel->window_list)
298 GtkWindow *tmp_window;
300 /* Must loop through them all */
301 for (l = toplevel->window_list; l; l = l->next)
303 tmp_window = GTK_WINDOW (l->data);
305 if (window == tmp_window)
307 /* Remove the window from the window_list & emit the signal */
308 toplevel->window_list = g_list_remove (toplevel->window_list,
310 child = gtk_widget_get_accessible (GTK_WIDGET (window));
311 g_signal_emit_by_name (atk_obj, "children-changed::remove",
314 atk_object_set_parent (child, NULL);
324 is_attached_menu_window (GtkWidget *widget)
327 gboolean ret = FALSE;
329 child = gtk_bin_get_child (GTK_BIN (widget));
330 if (GTK_IS_MENU (child))
334 attach = gtk_menu_get_attach_widget (GTK_MENU (child));
335 /* Allow for menu belonging to the Panel Menu, which is a GtkButton */
336 if (GTK_IS_MENU_ITEM (attach) ||
337 GTK_IS_BUTTON (attach))
344 is_combo_window (GtkWidget *widget)
349 child = gtk_bin_get_child (GTK_BIN (widget));
351 if (!GTK_IS_EVENT_BOX (child))
354 child = gtk_bin_get_child (GTK_BIN (child));
356 if (!GTK_IS_FRAME (child))
359 child = gtk_bin_get_child (GTK_BIN (child));
361 if (!GTK_IS_SCROLLED_WINDOW (child))
364 obj = gtk_widget_get_accessible (child);
365 obj = atk_object_get_parent (obj);