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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_
#define ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_
#include <memory>
#include "ash/ash_export.h"
#include "ash/wm/window_state_observer.h"
#include "base/memory/raw_ptr.h"
#include "ui/aura/window_observer.h"
namespace ash {
class WorkspaceLayoutManager;
// AlwaysOnTopController puts window into proper containers based on its
// 'AlwaysOnTop' property. That is, putting a window into the worskpace
// container if its "AlwaysOnTop" property is false. Otherwise, put it in
// |always_on_top_container_|.
class ASH_EXPORT AlwaysOnTopController : public aura::WindowObserver,
WindowStateObserver {
public:
explicit AlwaysOnTopController(aura::Window* always_on_top_container,
aura::Window* pip_container);
AlwaysOnTopController(const AlwaysOnTopController&) = delete;
AlwaysOnTopController& operator=(const AlwaysOnTopController&) = delete;
~AlwaysOnTopController() override;
static void SetDisallowReparent(aura::Window* window);
// Gets container for given |window| based on its "AlwaysOnTop" property.
aura::Window* GetContainer(aura::Window* window) const;
// Clears the layout managers for |always_on_top_container_| and
// |pip_container_|. This should only be called when the RootWindowController
// is shutting down, to prevent the layout managers from doing unnecessary and
// complex work.
void ClearLayoutManagers();
void SetLayoutManagerForTest(
std::unique_ptr<WorkspaceLayoutManager> layout_manager);
private:
void AddWindow(aura::Window* window);
void RemoveWindow(aura::Window* window);
void ReparentWindow(aura::Window* window);
// Overridden from aura::WindowObserver:
void OnWindowHierarchyChanged(const HierarchyChangeParams& params) override;
void OnWindowPropertyChanged(aura::Window* window,
const void* key,
intptr_t old) override;
void OnWindowDestroying(aura::Window* window) override;
// Overridden from WindowStateObserver:
void OnPreWindowStateTypeChange(WindowState* window_state,
chromeos::WindowStateType old_type) override;
raw_ptr<aura::Window, ExperimentalAsh> always_on_top_container_;
raw_ptr<aura::Window, ExperimentalAsh> pip_container_;
};
} // namespace ash
#endif // ASH_WM_ALWAYS_ON_TOP_CONTROLLER_H_
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