1 /* GAIL - The GNOME Accessibility Implementation Library
2 * Copyright 2004 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 "gtkcomboboxaccessible.h"
23 struct _GtkComboBoxAccessiblePrivate
30 static void atk_action_interface_init (AtkActionIface *iface);
31 static void atk_selection_interface_init (AtkSelectionIface *iface);
33 G_DEFINE_TYPE_WITH_CODE (GtkComboBoxAccessible, _gtk_combo_box_accessible, GTK_TYPE_CONTAINER_ACCESSIBLE,
34 G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
35 G_IMPLEMENT_INTERFACE (ATK_TYPE_SELECTION, atk_selection_interface_init))
38 changed_cb (GtkWidget *widget)
40 GtkComboBox *combo_box;
42 GtkComboBoxAccessible *accessible;
45 combo_box = GTK_COMBO_BOX (widget);
47 index = gtk_combo_box_get_active (combo_box);
48 obj = gtk_widget_get_accessible (widget);
49 accessible = GTK_COMBO_BOX_ACCESSIBLE (obj);
50 if (accessible->priv->old_selection != index)
52 accessible->priv->old_selection = index;
53 g_object_notify (G_OBJECT (obj), "accessible-name");
54 g_signal_emit_by_name (obj, "selection-changed");
59 gtk_combo_box_accessible_initialize (AtkObject *obj,
62 GtkComboBox *combo_box;
63 GtkComboBoxAccessible *accessible;
66 ATK_OBJECT_CLASS (_gtk_combo_box_accessible_parent_class)->initialize (obj, data);
68 combo_box = GTK_COMBO_BOX (data);
69 accessible = GTK_COMBO_BOX_ACCESSIBLE (obj);
71 g_signal_connect (combo_box, "changed", G_CALLBACK (changed_cb), NULL);
72 accessible->priv->old_selection = gtk_combo_box_get_active (combo_box);
74 popup = gtk_combo_box_get_popup_accessible (combo_box);
77 atk_object_set_parent (popup, obj);
78 accessible->priv->popup_set = TRUE;
80 if (gtk_combo_box_get_has_entry (combo_box))
81 atk_object_set_parent (gtk_widget_get_accessible (gtk_bin_get_child (GTK_BIN (combo_box))), obj);
83 obj->role = ATK_ROLE_COMBO_BOX;
87 gtk_combo_box_accessible_finalize (GObject *object)
89 GtkComboBoxAccessible *combo_box = GTK_COMBO_BOX_ACCESSIBLE (object);
91 g_free (combo_box->priv->name);
93 G_OBJECT_CLASS (_gtk_combo_box_accessible_parent_class)->finalize (object);
97 gtk_combo_box_accessible_get_name (AtkObject *obj)
100 GtkComboBox *combo_box;
101 GtkComboBoxAccessible *accessible;
108 name = ATK_OBJECT_CLASS (_gtk_combo_box_accessible_parent_class)->get_name (obj);
112 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
116 combo_box = GTK_COMBO_BOX (widget);
117 accessible = GTK_COMBO_BOX_ACCESSIBLE (obj);
118 if (gtk_combo_box_get_active_iter (combo_box, &iter))
120 model = gtk_combo_box_get_model (combo_box);
121 n_columns = gtk_tree_model_get_n_columns (model);
122 for (i = 0; i < n_columns; i++)
124 GValue value = G_VALUE_INIT;
126 gtk_tree_model_get_value (model, &iter, i, &value);
127 if (G_VALUE_HOLDS_STRING (&value))
129 g_free (accessible->priv->name);
130 accessible->priv->name = g_strdup (g_value_get_string (&value));
131 g_value_unset (&value);
135 g_value_unset (&value);
138 return accessible->priv->name;
142 gtk_combo_box_accessible_get_n_children (AtkObject* obj)
147 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
152 if (gtk_combo_box_get_has_entry (GTK_COMBO_BOX (widget)))
159 gtk_combo_box_accessible_ref_child (AtkObject *obj,
164 GtkComboBoxAccessible *box;
166 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
172 child = gtk_combo_box_get_popup_accessible (GTK_COMBO_BOX (widget));
173 box = GTK_COMBO_BOX_ACCESSIBLE (obj);
174 if (!box->priv->popup_set)
176 atk_object_set_parent (child, obj);
177 box->priv->popup_set = TRUE;
180 else if (i == 1 && gtk_combo_box_get_has_entry (GTK_COMBO_BOX (widget)))
182 child = gtk_widget_get_accessible (gtk_bin_get_child (GTK_BIN (widget)));
189 return g_object_ref (child);
193 _gtk_combo_box_accessible_class_init (GtkComboBoxAccessibleClass *klass)
195 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
196 AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
198 gobject_class->finalize = gtk_combo_box_accessible_finalize;
200 class->get_name = gtk_combo_box_accessible_get_name;
201 class->get_n_children = gtk_combo_box_accessible_get_n_children;
202 class->ref_child = gtk_combo_box_accessible_ref_child;
203 class->initialize = gtk_combo_box_accessible_initialize;
205 g_type_class_add_private (klass, sizeof (GtkComboBoxAccessiblePrivate));
209 _gtk_combo_box_accessible_init (GtkComboBoxAccessible *combo_box)
211 combo_box->priv = G_TYPE_INSTANCE_GET_PRIVATE (combo_box,
212 GTK_TYPE_COMBO_BOX_ACCESSIBLE,
213 GtkComboBoxAccessiblePrivate);
214 combo_box->priv->old_selection = -1;
215 combo_box->priv->name = NULL;
216 combo_box->priv->popup_set = FALSE;
220 gtk_combo_box_accessible_do_action (AtkAction *action,
223 GtkComboBox *combo_box;
225 gboolean popup_shown;
227 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (action));
231 if (!gtk_widget_get_sensitive (widget) || !gtk_widget_get_visible (widget))
237 combo_box = GTK_COMBO_BOX (widget);
238 g_object_get (combo_box, "popup-shown", &popup_shown, NULL);
240 gtk_combo_box_popdown (combo_box);
242 gtk_combo_box_popup (combo_box);
248 gtk_combo_box_accessible_get_n_actions (AtkAction *action)
254 gtk_combo_box_accessible_get_keybinding (AtkAction *action,
257 GtkComboBoxAccessible *combo_box;
261 AtkRelation *relation;
263 gpointer target_object;
265 gchar *return_value = NULL;
270 combo_box = GTK_COMBO_BOX_ACCESSIBLE (action);
271 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (combo_box));
275 set = atk_object_ref_relation_set (ATK_OBJECT (action));
280 relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
283 target = atk_relation_get_target (relation);
284 target_object = g_ptr_array_index (target, 0);
285 label = gtk_accessible_get_widget (GTK_ACCESSIBLE (target_object));
287 g_object_unref (set);
288 if (GTK_IS_LABEL (label))
290 key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
291 if (key_val != GDK_KEY_VoidSymbol)
292 return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
299 gtk_combo_box_accessible_action_get_name (AtkAction *action,
309 atk_action_interface_init (AtkActionIface *iface)
311 iface->do_action = gtk_combo_box_accessible_do_action;
312 iface->get_n_actions = gtk_combo_box_accessible_get_n_actions;
313 iface->get_keybinding = gtk_combo_box_accessible_get_keybinding;
314 iface->get_name = gtk_combo_box_accessible_action_get_name;
318 gtk_combo_box_accessible_add_selection (AtkSelection *selection,
323 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
327 gtk_combo_box_set_active (GTK_COMBO_BOX (widget), i);
333 gtk_combo_box_accessible_clear_selection (AtkSelection *selection)
337 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
341 gtk_combo_box_set_active (GTK_COMBO_BOX (widget), -1);
347 gtk_combo_box_accessible_ref_selection (AtkSelection *selection,
350 GtkComboBox *combo_box;
355 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
362 combo_box = GTK_COMBO_BOX (widget);
364 obj = gtk_combo_box_get_popup_accessible (combo_box);
365 index = gtk_combo_box_get_active (combo_box);
367 return atk_object_ref_accessible_child (obj, index);
371 gtk_combo_box_accessible_get_selection_count (AtkSelection *selection)
375 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
379 return (gtk_combo_box_get_active (GTK_COMBO_BOX (widget)) == -1) ? 0 : 1;
383 gtk_combo_box_accessible_is_child_selected (AtkSelection *selection,
389 widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
394 j = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
400 gtk_combo_box_accessible_remove_selection (AtkSelection *selection,
403 if (atk_selection_is_child_selected (selection, i))
404 atk_selection_clear_selection (selection);
410 atk_selection_interface_init (AtkSelectionIface *iface)
412 iface->add_selection = gtk_combo_box_accessible_add_selection;
413 iface->clear_selection = gtk_combo_box_accessible_clear_selection;
414 iface->ref_selection = gtk_combo_box_accessible_ref_selection;
415 iface->get_selection_count = gtk_combo_box_accessible_get_selection_count;
416 iface->is_child_selected = gtk_combo_box_accessible_is_child_selected;
417 iface->remove_selection = gtk_combo_box_accessible_remove_selection;