forked from AuroraMiddleware/gtk
680 lines
18 KiB
C
680 lines
18 KiB
C
/* GAIL - The GNOME Accessibility Implementation Library
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* Copyright 2004 Sun Microsystems Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.h>
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#include "gailcombobox.h"
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#if GTK_MINOR_VERSION > 4
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#define GAIL_COMBOX_BOX_A11y_COMPLETE
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#endif
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static void gail_combo_box_class_init (GailComboBoxClass *klass);
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static void gail_combo_box_object_init (GailComboBox *combo_box);
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static void gail_combo_box_real_initialize (AtkObject *obj,
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gpointer data);
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static void gail_combo_box_changed_gtk (GtkWidget *widget);
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static G_CONST_RETURN gchar* gail_combo_box_get_name (AtkObject *obj);
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static gint gail_combo_box_get_n_children (AtkObject *obj);
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static AtkObject* gail_combo_box_ref_child (AtkObject *obj,
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gint i);
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static void gail_combo_box_finalize (GObject *object);
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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static void atk_action_interface_init (AtkActionIface *iface);
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static gboolean gail_combo_box_do_action (AtkAction *action,
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gint i);
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static gboolean idle_do_action (gpointer data);
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static gint gail_combo_box_get_n_actions (AtkAction *action)
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;
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static G_CONST_RETURN gchar* gail_combo_box_get_description(AtkAction *action,
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gint i);
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static G_CONST_RETURN gchar* gail_combo_box_get_keybinding (AtkAction *action,
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gint i);
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static G_CONST_RETURN gchar* gail_combo_box_action_get_name(AtkAction *action,
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gint i);
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static gboolean gail_combo_box_set_description(AtkAction *action,
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gint i,
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const gchar *desc);
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#endif
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static void atk_selection_interface_init (AtkSelectionIface *iface);
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static gboolean gail_combo_box_add_selection (AtkSelection *selection,
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gint i);
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static gboolean gail_combo_box_clear_selection (AtkSelection *selection);
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static AtkObject* gail_combo_box_ref_selection (AtkSelection *selection,
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gint i);
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static gint gail_combo_box_get_selection_count (AtkSelection *selection);
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static gboolean gail_combo_box_is_child_selected (AtkSelection *selection,
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gint i);
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static gboolean gail_combo_box_remove_selection (AtkSelection *selection,
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gint i);
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static gpointer parent_class = NULL;
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GType
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gail_combo_box_get_type (void)
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{
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static GType type = 0;
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if (!type)
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{
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static const GTypeInfo tinfo =
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{
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sizeof (GailComboBoxClass),
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(GBaseInitFunc) NULL, /* base init */
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(GBaseFinalizeFunc) NULL, /* base finalize */
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(GClassInitFunc) gail_combo_box_class_init, /* class init */
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(GClassFinalizeFunc) NULL, /* class finalize */
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NULL, /* class data */
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sizeof (GailComboBox), /* instance size */
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0, /* nb preallocs */
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(GInstanceInitFunc) gail_combo_box_object_init, /* instance init */
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NULL /* value table */
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};
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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static const GInterfaceInfo atk_action_info =
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{
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(GInterfaceInitFunc) atk_action_interface_init,
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(GInterfaceFinalizeFunc) NULL,
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NULL
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};
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#endif
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static const GInterfaceInfo atk_selection_info =
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{
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(GInterfaceInitFunc) atk_selection_interface_init,
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(GInterfaceFinalizeFunc) NULL,
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NULL
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};
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type = g_type_register_static (GAIL_TYPE_CONTAINER,
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"GailComboBox", &tinfo, 0);
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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g_type_add_interface_static (type, ATK_TYPE_ACTION,
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&atk_action_info);
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#endif
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g_type_add_interface_static (type, ATK_TYPE_SELECTION,
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&atk_selection_info);
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}
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return type;
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}
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static void
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gail_combo_box_class_init (GailComboBoxClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
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gobject_class->finalize = gail_combo_box_finalize;
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parent_class = g_type_class_peek_parent (klass);
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class->get_name = gail_combo_box_get_name;
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class->get_n_children = gail_combo_box_get_n_children;
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class->ref_child = gail_combo_box_ref_child;
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class->initialize = gail_combo_box_real_initialize;
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}
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static void
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gail_combo_box_object_init (GailComboBox *combo_box)
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{
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combo_box->press_description = NULL;
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combo_box->press_keybinding = NULL;
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combo_box->old_selection = -1;
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combo_box->name = NULL;
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combo_box->popup_set = FALSE;
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}
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AtkObject*
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gail_combo_box_new (GtkWidget *widget)
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{
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GObject *object;
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AtkObject *accessible;
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g_return_val_if_fail (GTK_IS_COMBO_BOX (widget), NULL);
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object = g_object_new (GAIL_TYPE_COMBO_BOX, NULL);
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accessible = ATK_OBJECT (object);
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atk_object_initialize (accessible, widget);
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return accessible;
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}
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static void
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gail_combo_box_real_initialize (AtkObject *obj,
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gpointer data)
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{
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GtkComboBox *combo_box;
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GailComboBox *gail_combo_box;
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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AtkObject *popup;
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#endif
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ATK_OBJECT_CLASS (parent_class)->initialize (obj, data);
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combo_box = GTK_COMBO_BOX (data);
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gail_combo_box = GAIL_COMBO_BOX (obj);
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g_signal_connect (combo_box,
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"changed",
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G_CALLBACK (gail_combo_box_changed_gtk),
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NULL);
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gail_combo_box->old_selection = gtk_combo_box_get_active (combo_box);
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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popup = gtk_combo_box_get_popup_accessible (combo_box);
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if (popup)
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{
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atk_object_set_parent (popup, obj);
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gail_combo_box->popup_set = TRUE;
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}
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if (GTK_IS_COMBO_BOX_ENTRY (combo_box))
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atk_object_set_parent (gtk_widget_get_accessible (gtk_bin_get_child (GTK_BIN (combo_box))), obj);
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#endif
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obj->role = ATK_ROLE_COMBO_BOX;
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}
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static void
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gail_combo_box_changed_gtk (GtkWidget *widget)
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{
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GtkComboBox *combo_box;
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AtkObject *obj;
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GailComboBox *gail_combo_box;
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gint index;
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combo_box = GTK_COMBO_BOX (widget);
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index = gtk_combo_box_get_active (combo_box);
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obj = gtk_widget_get_accessible (widget);
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gail_combo_box = GAIL_COMBO_BOX (obj);
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if (gail_combo_box->old_selection != index)
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{
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gail_combo_box->old_selection = index;
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g_signal_emit_by_name (obj, "selection_changed");
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}
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}
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static G_CONST_RETURN gchar*
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gail_combo_box_get_name (AtkObject *obj)
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{
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GtkWidget *widget;
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GtkComboBox *combo_box;
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GailComboBox *gail_combo_box;
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GtkTreeIter iter;
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G_CONST_RETURN gchar *name;
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GtkTreeModel *model;
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gint n_columns;
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gint i;
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g_return_val_if_fail (GAIL_IS_COMBO_BOX (obj), NULL);
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name = ATK_OBJECT_CLASS (parent_class)->get_name (obj);
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if (name)
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return name;
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widget = GTK_ACCESSIBLE (obj)->widget;
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if (widget == NULL)
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/*
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* State is defunct
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*/
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return NULL;
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combo_box = GTK_COMBO_BOX (widget);
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gail_combo_box = GAIL_COMBO_BOX (obj);
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if (gtk_combo_box_get_active_iter (combo_box, &iter))
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{
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model = gtk_combo_box_get_model (combo_box);
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n_columns = gtk_tree_model_get_n_columns (model);
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for (i = 0; i < n_columns; i++)
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{
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GValue value = { 0, };
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gtk_tree_model_get_value (model, &iter, i, &value);
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if (G_VALUE_HOLDS_STRING (&value))
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{
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if (gail_combo_box->name) g_free (gail_combo_box->name);
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gail_combo_box->name = g_strdup ((gchar *)
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g_value_get_string (&value));
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g_value_unset (&value);
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break;
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}
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else
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g_value_unset (&value);
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}
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}
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return gail_combo_box->name;
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}
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/*
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* The children of a GailComboBox are the list of items and the entry field
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* if it is editable.
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*/
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static gint
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gail_combo_box_get_n_children (AtkObject* obj)
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{
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gint n_children = 0;
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GtkWidget *widget;
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g_return_val_if_fail (GAIL_IS_COMBO_BOX (obj), 0);
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widget = GTK_ACCESSIBLE (obj)->widget;
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if (widget == NULL)
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/*
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* State is defunct
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*/
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return 0;
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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n_children++;
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if (GTK_IS_COMBO_BOX_ENTRY (widget))
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n_children ++;
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#endif
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return n_children;
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}
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static AtkObject*
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gail_combo_box_ref_child (AtkObject *obj,
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gint i)
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{
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GtkWidget *widget;
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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AtkObject *child;
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GailComboBox *box;
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#endif
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g_return_val_if_fail (GAIL_IS_COMBO_BOX (obj), NULL);
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widget = GTK_ACCESSIBLE (obj)->widget;
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if (widget == NULL)
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/*
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* State is defunct
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*/
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return NULL;
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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if (i == 0)
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{
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child = gtk_combo_box_get_popup_accessible (GTK_COMBO_BOX (widget));
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box = GAIL_COMBO_BOX (obj);
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if (box->popup_set == FALSE)
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{
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atk_object_set_parent (child, obj);
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box->popup_set = TRUE;
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}
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}
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else if (i == 1 && GTK_IS_COMBO_BOX_ENTRY (widget))
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{
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child = gtk_widget_get_accessible (gtk_bin_get_child (GTK_BIN (widget)));
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}
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else
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{
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return NULL;
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}
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return g_object_ref (child);
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#else
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return NULL;
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#endif
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}
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#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
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static void
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atk_action_interface_init (AtkActionIface *iface)
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{
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g_return_if_fail (iface != NULL);
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iface->do_action = gail_combo_box_do_action;
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iface->get_n_actions = gail_combo_box_get_n_actions;
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iface->get_description = gail_combo_box_get_description;
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iface->get_keybinding = gail_combo_box_get_keybinding;
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iface->get_name = gail_combo_box_action_get_name;
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iface->set_description = gail_combo_box_set_description;
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}
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static gboolean
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gail_combo_box_do_action (AtkAction *action,
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gint i)
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{
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GailComboBox *combo_box;
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GtkWidget *widget;
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widget = GTK_ACCESSIBLE (action)->widget;
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if (widget == NULL)
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/*
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* State is defunct
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*/
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return FALSE;
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if (!GTK_WIDGET_SENSITIVE (widget) || !GTK_WIDGET_VISIBLE (widget))
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return FALSE;
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combo_box = GAIL_COMBO_BOX (action);
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if (i == 0)
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{
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if (combo_box->action_idle_handler)
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return FALSE;
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combo_box->action_idle_handler = gdk_threads_add_idle (idle_do_action, combo_box);
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return TRUE;
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}
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else
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return FALSE;
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}
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static gboolean
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idle_do_action (gpointer data)
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{
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GtkComboBox *combo_box;
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GtkWidget *widget;
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GailComboBox *gail_combo_box;
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AtkObject *popup;
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gboolean do_popup;
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gail_combo_box = GAIL_COMBO_BOX (data);
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gail_combo_box->action_idle_handler = 0;
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widget = GTK_ACCESSIBLE (gail_combo_box)->widget;
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if (widget == NULL || /* State is defunct */
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!GTK_WIDGET_SENSITIVE (widget) || !GTK_WIDGET_VISIBLE (widget))
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return FALSE;
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combo_box = GTK_COMBO_BOX (widget);
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popup = gtk_combo_box_get_popup_accessible (combo_box);
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do_popup = !GTK_WIDGET_MAPPED (GTK_ACCESSIBLE (popup)->widget);
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if (do_popup)
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gtk_combo_box_popup (combo_box);
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else
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gtk_combo_box_popdown (combo_box);
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return FALSE;
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}
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static gint
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gail_combo_box_get_n_actions (AtkAction *action)
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{
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/*
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* The default behavior of a combo_box box is to have one action -
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*/
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return 1;
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}
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static G_CONST_RETURN gchar*
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gail_combo_box_get_description (AtkAction *action,
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gint i)
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{
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if (i == 0)
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{
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GailComboBox *combo_box;
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combo_box = GAIL_COMBO_BOX (action);
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return combo_box->press_description;
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}
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else
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return NULL;
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}
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static G_CONST_RETURN gchar*
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gail_combo_box_get_keybinding (AtkAction *action,
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gint i)
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{
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GailComboBox *combo_box;
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gchar *return_value = NULL;
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combo_box = GAIL_COMBO_BOX (action);
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switch (i)
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{
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case 0:
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{
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GtkWidget *widget;
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GtkWidget *label;
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AtkRelationSet *set;
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AtkRelation *relation;
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GPtrArray *target;
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gpointer target_object;
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guint key_val;
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combo_box = GAIL_COMBO_BOX (action);
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widget = GTK_ACCESSIBLE (combo_box)->widget;
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if (widget == NULL)
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return NULL;
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set = atk_object_ref_relation_set (ATK_OBJECT (action));
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if (!set)
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return NULL;
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label = NULL;
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relation = atk_relation_set_get_relation_by_type (set, ATK_RELATION_LABELLED_BY);
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if (relation)
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{
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target = atk_relation_get_target (relation);
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target_object = g_ptr_array_index (target, 0);
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if (GTK_IS_ACCESSIBLE (target_object))
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{
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label = GTK_ACCESSIBLE (target_object)->widget;
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}
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}
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g_object_unref (set);
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if (GTK_IS_LABEL (label))
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{
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key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
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if (key_val != GDK_VoidSymbol)
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return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
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}
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g_free (combo_box->press_keybinding);
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combo_box->press_keybinding = return_value;
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break; }
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default:
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break;
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}
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return return_value;
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}
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static G_CONST_RETURN gchar*
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gail_combo_box_action_get_name (AtkAction *action,
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gint i)
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{
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if (i == 0)
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return "press";
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else
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return NULL;
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}
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static gboolean
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gail_combo_box_set_description (AtkAction *action,
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gint i,
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const gchar *desc)
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{
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if (i == 0)
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{
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GailComboBox *combo_box;
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combo_box = GAIL_COMBO_BOX (action);
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g_free (combo_box->press_description);
|
|
combo_box->press_description = g_strdup (desc);
|
|
return TRUE;
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
#endif
|
|
|
|
static void
|
|
atk_selection_interface_init (AtkSelectionIface *iface)
|
|
{
|
|
g_return_if_fail (iface != NULL);
|
|
|
|
iface->add_selection = gail_combo_box_add_selection;
|
|
iface->clear_selection = gail_combo_box_clear_selection;
|
|
iface->ref_selection = gail_combo_box_ref_selection;
|
|
iface->get_selection_count = gail_combo_box_get_selection_count;
|
|
iface->is_child_selected = gail_combo_box_is_child_selected;
|
|
iface->remove_selection = gail_combo_box_remove_selection;
|
|
/*
|
|
* select_all_selection does not make sense for a combo_box
|
|
* so no implementation is provided.
|
|
*/
|
|
}
|
|
|
|
static gboolean
|
|
gail_combo_box_add_selection (AtkSelection *selection,
|
|
gint i)
|
|
{
|
|
GtkComboBox *combo_box;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_ACCESSIBLE (selection)->widget;
|
|
if (widget == NULL)
|
|
/*
|
|
* State is defunct
|
|
*/
|
|
return FALSE;
|
|
|
|
combo_box = GTK_COMBO_BOX (widget);
|
|
|
|
gtk_combo_box_set_active (combo_box, i);
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gail_combo_box_clear_selection (AtkSelection *selection)
|
|
{
|
|
GtkComboBox *combo_box;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_ACCESSIBLE (selection)->widget;
|
|
if (widget == NULL)
|
|
/*
|
|
* State is defunct
|
|
*/
|
|
return FALSE;
|
|
|
|
combo_box = GTK_COMBO_BOX (widget);
|
|
|
|
gtk_combo_box_set_active (combo_box, -1);
|
|
return TRUE;
|
|
}
|
|
|
|
static AtkObject*
|
|
gail_combo_box_ref_selection (AtkSelection *selection,
|
|
gint i)
|
|
{
|
|
GtkComboBox *combo_box;
|
|
GtkWidget *widget;
|
|
#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
|
|
AtkObject *obj;
|
|
gint index;
|
|
#endif
|
|
|
|
widget = GTK_ACCESSIBLE (selection)->widget;
|
|
if (widget == NULL)
|
|
/*
|
|
* State is defunct
|
|
*/
|
|
return NULL;
|
|
|
|
combo_box = GTK_COMBO_BOX (widget);
|
|
|
|
/*
|
|
* A combo_box box can have only one selection.
|
|
*/
|
|
if (i != 0)
|
|
return NULL;
|
|
|
|
#ifdef GAIL_COMBOX_BOX_A11y_COMPLETE
|
|
obj = gtk_combo_box_get_popup_accessible (combo_box);
|
|
index = gtk_combo_box_get_active (combo_box);
|
|
return atk_object_ref_accessible_child (obj, index);
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
static gint
|
|
gail_combo_box_get_selection_count (AtkSelection *selection)
|
|
{
|
|
GtkComboBox *combo_box;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_ACCESSIBLE (selection)->widget;
|
|
if (widget == NULL)
|
|
/*
|
|
* State is defunct
|
|
*/
|
|
return 0;
|
|
|
|
combo_box = GTK_COMBO_BOX (widget);
|
|
|
|
return (gtk_combo_box_get_active (combo_box) == -1) ? 0 : 1;
|
|
}
|
|
|
|
static gboolean
|
|
gail_combo_box_is_child_selected (AtkSelection *selection,
|
|
gint i)
|
|
{
|
|
GtkComboBox *combo_box;
|
|
gint j;
|
|
GtkWidget *widget;
|
|
|
|
widget = GTK_ACCESSIBLE (selection)->widget;
|
|
if (widget == NULL)
|
|
/*
|
|
* State is defunct
|
|
*/
|
|
return FALSE;
|
|
|
|
combo_box = GTK_COMBO_BOX (widget);
|
|
|
|
j = gtk_combo_box_get_active (combo_box);
|
|
|
|
return (j == i);
|
|
}
|
|
|
|
static gboolean
|
|
gail_combo_box_remove_selection (AtkSelection *selection,
|
|
gint i)
|
|
{
|
|
if (atk_selection_is_child_selected (selection, i))
|
|
atk_selection_clear_selection (selection);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gail_combo_box_finalize (GObject *object)
|
|
{
|
|
GailComboBox *combo_box = GAIL_COMBO_BOX (object);
|
|
|
|
g_free (combo_box->press_description);
|
|
g_free (combo_box->press_keybinding);
|
|
g_free (combo_box->name);
|
|
if (combo_box->action_idle_handler)
|
|
{
|
|
g_source_remove (combo_box->action_idle_handler);
|
|
combo_box->action_idle_handler = 0;
|
|
}
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|