ash/wm/status_area_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_STATUS_AREA_LAYOUT_MANAGER_H_
   6 #define ASH_WM_STATUS_AREA_LAYOUT_MANAGER_H_
   7
   8 #include "ash/snap_to_pixel_layout_manager.h"
   9 #include "base/basictypes.h"
  10 #include "base/compiler_specific.h"
  11 #include "ui/aura/layout_manager.h"
  12
  13 namespace ash {
  14 class ShelfWidget;
  15
  16 // StatusAreaLayoutManager is a layout manager responsible for the status area.
  17 // In any case when status area needs relayout it redirects this call to
  18 // ShelfLayoutManager.
  19 class StatusAreaLayoutManager : public SnapToPixelLayoutManager {
  20  public:
  21   StatusAreaLayoutManager(aura::Window* container, ShelfWidget* shelf);
  22   ~StatusAreaLayoutManager() override;
  23
  24   // Overridden from aura::LayoutManager:
  25   void OnWindowResized() override;
  26   void SetChildBounds(aura::Window* child,
  27                       const gfx::Rect& requested_bounds) override;
  28
  29  private:
  30   // Updates layout of the status area. Effectively calls ShelfLayoutManager
  31   // to update layout of the shelf.
  32   void LayoutStatusArea();
  33
  34   // True when inside LayoutStatusArea method.
  35   // Used to prevent calling itself again from SetChildBounds().
  36   bool in_layout_;
  37
  38   ShelfWidget* shelf_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(StatusAreaLayoutManager);
  41 };
  42
  43 }  // namespace ash
  44
  45 #endif  // ASH_WM_STATUS_AREA_LAYOUT_MANAGER_H_