From c51ef797a707f4e2c6f9688d4378f2b0e9898a66 Mon Sep 17 00:00:00 2001
From: Perberos <perberos@gmail.com>
Date: Thu, 1 Dec 2011 22:56:10 -0300
Subject: moving from https://github.com/perberos/mate-desktop-environment

---
 mate-panel/panel-a11y.c | 135 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 mate-panel/panel-a11y.c

(limited to 'mate-panel/panel-a11y.c')

diff --git a/mate-panel/panel-a11y.c b/mate-panel/panel-a11y.c
new file mode 100644
index 00000000..0c308c4d
--- /dev/null
+++ b/mate-panel/panel-a11y.c
@@ -0,0 +1,135 @@
+/*
+ * panel-a11y.c: panel accessibility support module
+ *
+ * Copyright (C) 2002, 2003 Sun Microsystems Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
+ */
+
+#include "panel-a11y.h"
+
+gboolean
+panel_a11y_get_is_a11y_enabled (GtkWidget *widget)
+{
+	static gboolean initialised  = FALSE;
+	static gboolean a11y_enabled = FALSE;
+
+	if (!initialised) {
+		a11y_enabled = GTK_IS_ACCESSIBLE (gtk_widget_get_accessible (widget));
+		initialised = TRUE;
+	}
+
+	return a11y_enabled;
+}
+
+void
+panel_a11y_set_atk_name_desc (GtkWidget  *widget,
+			      const char *name, 
+			      const char *desc)
+{
+	AtkObject *aobj;
+
+	g_return_if_fail (GTK_IS_WIDGET (widget));
+
+	if (!panel_a11y_get_is_a11y_enabled (widget))
+		return;
+
+	aobj = gtk_widget_get_accessible (widget);
+
+	if (name)
+		atk_object_set_name (aobj, name);
+
+	if (desc)
+		atk_object_set_description (aobj, desc);
+}
+
+/**
+ * panel_a11y_set_atk_relation
+ * @widget : The Gtk widget which is labelled by @label
+ * @label : The label for the @widget.
+ *
+ * Description : This function establishes atk relation
+ * between a gtk widget and a label.
+ */
+void
+panel_a11y_set_atk_relation (GtkWidget *widget,
+			     GtkLabel  *label)
+{
+	AtkObject      *aobject;
+	AtkRelationSet *relation_set;
+	AtkRelation    *relation; 
+	AtkObject      *targets [1];
+
+	g_return_if_fail (GTK_IS_WIDGET(widget));
+	g_return_if_fail (GTK_IS_LABEL(label));
+
+	if (!panel_a11y_get_is_a11y_enabled (widget))
+		return;
+
+	aobject = gtk_widget_get_accessible (widget);
+
+	gtk_label_set_mnemonic_widget (label, widget);
+
+	targets [0] = gtk_widget_get_accessible (GTK_WIDGET (label));
+
+	relation_set = atk_object_ref_relation_set (aobject);
+
+	relation = atk_relation_new (targets, 1, ATK_RELATION_LABELLED_BY);
+	atk_relation_set_add (relation_set, relation);
+	g_object_unref (relation);
+}
+
+/**
+ * panel_a11y_query_accessible_parent_type
+ * @type: widget type
+ * @type_info: accessible object type info to complete
+ *
+ * Standard hack which figures out the #GType of the accessible
+ * object for @type's parent type. Also, fills out the class_size
+ * and instance_size of @type_info to match the size of the parent
+ * type.
+ *
+ * Basically, this is the hack to use if you want to derive from
+ * an accessible object implementation in gail.
+ *
+ * Returns: the #GType of @type's parent's accessible peer
+ */
+GType
+panel_a11y_query_accessible_parent_type (GType      type,
+					 GTypeInfo *type_info)
+{
+	AtkObjectFactory *factory;
+	GType             parent_type;
+	GType             accessible_parent_type;
+
+	g_return_val_if_fail (G_TYPE_IS_OBJECT (type), G_TYPE_INVALID);
+
+	parent_type = g_type_parent (type);
+
+	factory = atk_registry_get_factory (atk_get_default_registry (), parent_type);
+
+	accessible_parent_type = atk_object_factory_get_accessible_type (factory);
+
+	if (type_info) {
+		GTypeQuery query;
+
+		g_type_query (accessible_parent_type, &query);
+
+		type_info->class_size    = query.class_size;
+		type_info->instance_size = query.instance_size;
+	}
+
+	return atk_object_factory_get_accessible_type (factory);
+}
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