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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/libgtk2ui/owned_widget_gtk2.h"
#include <gtk/gtk.h>
#include "base/logging.h"
namespace libgtk2ui {
OwnedWidgetGtk::~OwnedWidgetGtk() {
Destroy();
}
void OwnedWidgetGtk::Own(GtkWidget* widget) {
if (!widget)
return;
DCHECK(!widget_);
// We want to make sure that Own() was called properly, right after the
// widget was created. There should be a floating reference.
DCHECK(g_object_is_floating(widget));
// Sink the floating reference, we should now own this reference.
g_object_ref_sink(widget);
widget_ = widget;
}
void OwnedWidgetGtk::Destroy() {
if (!widget_)
return;
GtkWidget* widget = widget_;
widget_ = NULL;
gtk_widget_destroy(widget);
DCHECK(!g_object_is_floating(widget));
// NOTE: Assumes some implementation details about glib internals.
DCHECK_EQ(G_OBJECT(widget)->ref_count, 1U);
g_object_unref(widget);
}
} // namespace libgtk2ui
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