mash: Move SystemTrayImage and TrayImageItem to //ash/common

ash/system/tray/tray_item_view.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_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_
-#define ASH_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "base/macros.h"
-#include "ui/gfx/animation/animation_delegate.h"
-#include "ui/views/view.h"
-
-namespace gfx {
-class SlideAnimation;
-}
-
-namespace views {
-class ImageView;
-class Label;
-}
-
-namespace ash {
-class SystemTrayItem;
-
-// Base-class for items in the tray. It makes sure the widget is updated
-// correctly when the visibility/size of the tray item changes. It also adds
-// animation when showing/hiding the item in the tray.
-class ASH_EXPORT TrayItemView : public views::View,
-                                public gfx::AnimationDelegate {
- public:
-  explicit TrayItemView(SystemTrayItem* owner);
-  ~TrayItemView() override;
-
-  static void DisableAnimationsForTest();
-
-  // Convenience function for creating a child Label or ImageView.
-  void CreateLabel();
-  void CreateImageView();
-
-  SystemTrayItem* owner() const { return owner_; }
-  views::Label* label() const { return label_; }
-  views::ImageView* image_view() const { return image_view_; }
-
-  // Overridden from views::View.
-  void SetVisible(bool visible) override;
-  gfx::Size GetPreferredSize() const override;
-  int GetHeightForWidth(int width) const override;
-
- protected:
-  // Makes sure the widget relayouts after the size/visibility of the view
-  // changes.
-  void ApplyChange();
-
-  // This should return the desired size of the view. For most views, this
-  // returns GetPreferredSize. But since this class overrides GetPreferredSize
-  // for animation purposes, we allow a different way to get this size, and do
-  // not allow GetPreferredSize to be overridden.
-  virtual gfx::Size DesiredSize() const;
-
-  // The default animation duration is 200ms. But each view can customize this.
-  virtual int GetAnimationDurationMS();
-
- private:
-  // Overridden from views::View.
-  void ChildPreferredSizeChanged(View* child) override;
-
-  // Overridden from gfx::AnimationDelegate.
-  void AnimationProgressed(const gfx::Animation* animation) override;
-  void AnimationEnded(const gfx::Animation* animation) override;
-  void AnimationCanceled(const gfx::Animation* animation) override;
-
-  SystemTrayItem* owner_;
-  std::unique_ptr<gfx::SlideAnimation> animation_;
-  views::Label* label_;
-  views::ImageView* image_view_;
-
-  DISALLOW_COPY_AND_ASSIGN(TrayItemView);
-};
-
-}  // namespace ash
-
-#endif  // ASH_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_