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// 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 "ui/base/animation/animation_delegate.h"
#include "ui/views/view.h"
namespace ui {
class SlideAnimation;
}
namespace views {
class ImageView;
class Label;
}
namespace ash {
namespace internal {
// 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 TrayItemView : public views::View,
public ui::AnimationDelegate {
public:
TrayItemView();
virtual ~TrayItemView();
// Convenience function for creating a child Label or ImageView.
void CreateLabel();
void CreateImageView();
views::Label* label() { return label_; }
views::ImageView* image_view() { return image_view_; }
// Overridden from views::View.
virtual void SetVisible(bool visible) OVERRIDE;
virtual gfx::Size GetPreferredSize() 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();
// The default animation duration is 200ms. But each view can customize this.
virtual int GetAnimationDurationMS();
private:
// Overridden from views::View.
virtual void ChildPreferredSizeChanged(View* child) OVERRIDE;
// Overridden from ui::AnimationDelegate.
virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
virtual void AnimationCanceled(const ui::Animation* animation) OVERRIDE;
scoped_ptr<ui::SlideAnimation> animation_;
views::Label* label_;
views::ImageView* image_view_;
DISALLOW_COPY_AND_ASSIGN(TrayItemView);
};
} // namespace internal
} // namespace ash
#endif // ASH_SYSTEM_TRAY_TRAY_ITEM_VIEW_H_
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