ash/wm/root_window_layout_manager.h

// 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 ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_
#define ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_

#include "base/macros.h"
#include "ui/aura/layout_manager.h"

namespace ash {
namespace wm {

// A layout manager for the root window.
// Resizes all of its immediate children and their descendants to fill the
// bounds of the associated window.
class RootWindowLayoutManager : public aura::LayoutManager {
 public:
  explicit RootWindowLayoutManager(aura::Window* owner);
  ~RootWindowLayoutManager() override;

  // Overridden from aura::LayoutManager:
  void OnWindowResized() override;
  void OnWindowAddedToLayout(aura::Window* child) override;
  void OnWillRemoveWindowFromLayout(aura::Window* child) override;
  void OnWindowRemovedFromLayout(aura::Window* child) override;
  void OnChildWindowVisibilityChanged(aura::Window* child,
                                      bool visible) override;
  void SetChildBounds(aura::Window* child,
                      const gfx::Rect& requested_bounds) override;

 private:
  aura::Window* owner_;

  DISALLOW_COPY_AND_ASSIGN(RootWindowLayoutManager);
};

}  // namespace wm
}  // namespace ash

#endif  // ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_