Delete athena/

athena/activity/public/activity_view_model.h

-// Copyright 2014 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 ATHENA_ACTIVITY_PUBLIC_ACTIVITY_VIEW_MODEL_H_
-#define ATHENA_ACTIVITY_PUBLIC_ACTIVITY_VIEW_MODEL_H_
-
-#include "athena/athena_export.h"
-#include "base/strings/string16.h"
-
-typedef unsigned int SkColor;
-
-namespace gfx {
-class ImageSkia;
-}
-
-namespace views {
-class View;
-class Widget;
-}
-
-namespace athena {
-
-class ActivityView;
-
-// The view model for the representation of the activity.
-class ATHENA_EXPORT ActivityViewModel {
- public:
-  virtual ~ActivityViewModel() {}
-
-  // Called after the view model is attached to the widget/window tree and
-  // before it gets registered to the ActivityManager and the ResourceManager.
-  // At this time the Activity can also be moved to a different place in the
-  // Activity history.
-  virtual void Init() = 0;
-
-  // Returns a color most representative of this activity.
-  virtual SkColor GetRepresentativeColor() const = 0;
-
-  // Returns a title for the activity.
-  virtual base::string16 GetTitle() const = 0;
-
-  // Returns an icon for the activity.
-  virtual gfx::ImageSkia GetIcon() const = 0;
-
-  // Sets the ActivityView for the model to update. The model does not take
-  // ownership of the view.
-  virtual void SetActivityView(ActivityView* view) = 0;
-
-  // True if the activity wants to use Widget's frame, or false if the activity
-  // draws its own frame.
-  virtual bool UsesFrame() const = 0;
-
-  // Returns the contents view which might be nullptr if the activity is not
-  // loaded. Note that the caller should not hold on to the view since it can
-  // be deleted by the resource manager.
-  virtual views::View* GetContentsView() = 0;
-
-  // Returns an image which can be used to represent the activity in e.g. the
-  // overview mode. The returned image can have no size if either a view exists
-  // or the activity has not yet been loaded or ever been presented. In that
-  // case GetRepresentativeColor() should be used to clear the preview area.
-  // Note that since the image gets created upon request, and the
-  // ActivityViewModel will hold no reference to the returned image data. As
-  // such it is advisable to hold on to the image as long as needed instead of
-  // calling this function frequently since it will cause time to generate.
-  virtual gfx::ImageSkia GetOverviewModeImage() = 0;
-
-  // Prepares the contents view for overview.
-  virtual void PrepareContentsForOverview() = 0;
-
-  // Undoes any changes done by PrepareContentsForOverview().
-  virtual void ResetContentsView() = 0;
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_ACTIVITY_PUBLIC_ACTIVITY_VIEW_MODEL_H_