ash/wm/root_window_layout_manager.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_
   6 #define ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_
   7
   8 #include "ash/shell_window_ids.h"
   9 #include "base/basictypes.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "ui/aura/layout_manager.h"
  13
  14 namespace aura {
  15 class Window;
  16 }
  17 namespace gfx {
  18 class Rect;
  19 }
  20 namespace ui {
  21 class Layer;
  22 }
  23 namespace views {
  24 class Widget;
  25 }
  26
  27 namespace ash {
  28
  29 // A layout manager for the root window.
  30 // Resizes all of its immediate children to fill the bounds of the root window.
  31 class RootWindowLayoutManager : public aura::LayoutManager {
  32  public:
  33   explicit RootWindowLayoutManager(aura::Window* owner);
  34   ~RootWindowLayoutManager() override;
  35
  36   // Overridden from aura::LayoutManager:
  37   void OnWindowResized() override;
  38   void OnWindowAddedToLayout(aura::Window* child) override;
  39   void OnWillRemoveWindowFromLayout(aura::Window* child) override;
  40   void OnWindowRemovedFromLayout(aura::Window* child) override;
  41   void OnChildWindowVisibilityChanged(aura::Window* child,
  42                                       bool visible) override;
  43   void SetChildBounds(aura::Window* child,
  44                       const gfx::Rect& requested_bounds) override;
  45
  46  private:
  47   aura::Window* owner_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(RootWindowLayoutManager);
  50 };
  51
  52 }  // namespace ash
  53
  54 #endif  // ASH_WM_ROOT_WINDOW_LAYOUT_MANAGER_H_