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// Copyright 2014 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.
#ifndef UI_COMPOSITOR_LAYER_TREE_OWNER_H_
#define UI_COMPOSITOR_LAYER_TREE_OWNER_H_
#include "base/basictypes.h"
#include "ui/compositor/compositor_export.h"
namespace ui {
class Layer;
// Scoping object that owns a Layer and all its descendants.
class COMPOSITOR_EXPORT LayerTreeOwner {
public:
explicit LayerTreeOwner(Layer* root);
~LayerTreeOwner();
Layer* release() WARN_UNUSED_RESULT {
Layer* root = root_;
root_ = NULL;
return root;
}
Layer* root() { return root_; }
const Layer* root() const { return root_; }
private:
Layer* root_;
DISALLOW_COPY_AND_ASSIGN(LayerTreeOwner);
};
} // namespace
#endif // UI_COMPOSITOR_LAYER_TREE_OWNER_H_
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