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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.
#ifndef UI_WM_CORE_WINDOW_UTIL_H_
#define UI_WM_CORE_WINDOW_UTIL_H_
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "ui/wm/wm_export.h"
namespace aura {
class Window;
}
namespace ui {
class Layer;
class LayerOwner;
class LayerTreeOwner;
}
namespace wm {
WM_EXPORT void ActivateWindow(aura::Window* window);
WM_EXPORT void DeactivateWindow(aura::Window* window);
WM_EXPORT bool IsActiveWindow(aura::Window* window);
WM_EXPORT bool CanActivateWindow(aura::Window* window);
// Retrieves the activatable window for |window|. The ActivationClient makes
// this determination.
WM_EXPORT aura::Window* GetActivatableWindow(aura::Window* window);
// Retrieves the toplevel window for |window|. The ActivationClient makes this
// determination.
WM_EXPORT aura::Window* GetToplevelWindow(aura::Window* window);
// Returns the existing Layer for |root| (and all its descendants) and creates
// a new layer for |root| and all its descendants. This is intended for
// animations that want to animate between the existing visuals and a new state.
//
// As a result of this |root| has freshly created layers, meaning the layers
// have not yet been painted to.
WM_EXPORT scoped_ptr<ui::LayerTreeOwner> RecreateLayers(
ui::LayerOwner* root);
// Convenience functions that get the TransientWindowManager for the window and
// redirect appropriately. These are preferable to calling functions on
// TransientWindowManager as they handle the appropriate NULL checks.
WM_EXPORT aura::Window* GetTransientParent(aura::Window* window);
WM_EXPORT const aura::Window* GetTransientParent(
const aura::Window* window);
WM_EXPORT const std::vector<aura::Window*>& GetTransientChildren(
const aura::Window* window);
WM_EXPORT void AddTransientChild(aura::Window* parent, aura::Window* child);
WM_EXPORT void RemoveTransientChild(aura::Window* parent, aura::Window* child);
// Returns true if |window| has |ancestor| as a transient ancestor. A transient
// ancestor is found by following the transient parent chain of the window.
WM_EXPORT bool HasTransientAncestor(const aura::Window* window,
const aura::Window* ancestor);
} // namespace wm
#endif // UI_WM_CORE_WINDOW_UTIL_H_
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