[Aura] Refresh status area widget bounds on StatusAreaView layout

ui/aura_shell/shelf_layout_controller.h

-// Copyright (c) 2011 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_AURA_SHELL_SHELF_LAYOUT_CONTROLLER_H_
-#define UI_AURA_SHELL_SHELF_LAYOUT_CONTROLLER_H_
-#pragma once
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/gfx/compositor/layer_animation_observer.h"
-#include "ui/gfx/insets.h"
-#include "ui/gfx/rect.h"
-
-namespace views {
-class Widget;
-}
-
-namespace aura_shell {
-namespace internal {
-
-// ShelfLayoutController is responsible for showing and hiding the launcher and
-// status area as well as positioning them.
-class ShelfLayoutController : public ui::LayerAnimationObserver {
- public:
-  ShelfLayoutController(views::Widget* launcher,
-                        views::Widget* status);
-  virtual ~ShelfLayoutController();
-
-  // Stops any animations and sets the bounds of the launcher and status
-  // widgets.
-  void LayoutShelf();
-
-  // Sets the visbility of the shelf to |visible|.
-  void SetVisible(bool visible);
-
- private:
-  struct TargetBounds {
-    gfx::Rect launcher_bounds;
-    gfx::Rect status_bounds;
-    gfx::Insets work_area_insets;
-  };
-
-  // Stops any animations.
-  void StopAnimating();
-
-  // Calculates the target bounds assuming visibility of |visibile|.
-  void CalculateTargetBounds(bool visible,
-                             TargetBounds* target_bounds);
-
-  // Animates |widget| to the specified bounds and opacity.
-  void AnimateWidgetTo(views::Widget* widget,
-                       const gfx::Rect& target_bounds,
-                       float target_opacity);
-
-  // LayerAnimationObserver overrides:
-  virtual void OnLayerAnimationEnded(
-      const ui::LayerAnimationSequence* sequence) OVERRIDE;
-  virtual void OnLayerAnimationAborted(
-      const ui::LayerAnimationSequence* sequence) OVERRIDE {}
-  virtual void OnLayerAnimationScheduled(
-      const ui::LayerAnimationSequence* sequence) OVERRIDE {}
-
-  // Are we animating?
-  bool animating_;
-
-  // Current visibility. When the visibility changes this field is reset once
-  // the animation completes.
-  bool visible_;
-
-  // Max height needed.
-  int max_height_;
-
-  views::Widget* launcher_;
-  views::Widget* status_;
-
-  DISALLOW_COPY_AND_ASSIGN(ShelfLayoutController);
-};
-
-}  // namespace internal
-}  // namespace aura_shell
-
-#endif  // UI_AURA_SHELL_SHELF_LAYOUT_CONTROLLER_H_