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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_BACKGROUND_VIEW_H_
#define ASH_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_
#pragma once
#include "ash/ash_export.h"
#include "ash/launcher/background_animator.h"
#include "ash/system/tray/tray_views.h"
#include "ash/wm/shelf_auto_hide_behavior.h"
namespace ash {
namespace internal {
class TrayBackground;
// Base class for children of StatusAreaWidget: SystemTray, WebNotificationTray.
// This class handles setting and animating the background when the Launcher
// his shown/hidden. It also inherits from ActionableView so that the tray
// items can override PerformAction when clicked on.
class ASH_EXPORT TrayBackgroundView : public internal::ActionableView,
public BackgroundAnimatorDelegate {
public:
TrayBackgroundView();
virtual ~TrayBackgroundView();
// Overridden from views::View.
virtual void OnMouseEntered(const views::MouseEvent& event) OVERRIDE;
virtual void OnMouseExited(const views::MouseEvent& event) OVERRIDE;
// Overridden from internal::ActionableView.
virtual bool PerformAction(const views::Event& event) OVERRIDE;
// Overridden from internal::BackgroundAnimatorDelegate.
virtual void UpdateBackground(int alpha) OVERRIDE;
// Called whenever the shelf alignment changes.
virtual void SetShelfAlignment(ShelfAlignment alignment);
// Sets |contents| as a child and sets its background to |background_|.
void SetContents(views::View* contents);
// Sets whether the tray paints a background. Default is true, but is set to
// false if a window overlaps the shelf.
void SetPaintsBackground(
bool value,
internal::BackgroundAnimator::ChangeType change_type);
ShelfAlignment shelf_alignment() const { return shelf_alignment_; }
private:
// Shelf alignment.
ShelfAlignment shelf_alignment_;
// Owned by the view passed to SetContents().
internal::TrayBackground* background_;
internal::BackgroundAnimator hide_background_animator_;
internal::BackgroundAnimator hover_background_animator_;
DISALLOW_COPY_AND_ASSIGN(TrayBackgroundView);
};
} // namespace internal
} // namespace ash
#endif // ASH_SYSTEM_TRAY_TRAY_BACKGROUND_VIEW_H_
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