Athena: Adding basic resource management framework (un-/re-loading) of V2 applications

athena/activity/public/activity.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_H_
 #define ATHENA_ACTIVITY_PUBLIC_ACTIVITY_H_
 
 #include <string>
 
 #include "athena/athena_export.h"
 
+namespace aura {
+class Window;
+}
+
 namespace athena {
 
 class ActivityViewModel;
 
 // This class is a high level abstraction of an activity (which could be either
 // a web page or a V1/V2 app/extension). Through this class the activity can
 // be controlled (e.g. loaded / unloaded).
 // An Activity gets created with state |ACTIVITY_UNLOADED|.
 // Requesting |ACTIVITY_VISIBLE| or |ACTIVITY_INVISIBLE| will load it.
 // Once an activity was |ACTIVITY_INVISIBLE| for a while it can be transitioned
@@ skipping 43 matching lines @@
   virtual void SetCurrentState(ActivityState state) = 0;
 
   // Returns the current state of the activity.
   virtual ActivityState GetCurrentState() = 0;
 
   // Returns if the activity is visible or not.
   virtual bool IsVisible() = 0;
 
   // Returns the current media state.
   virtual ActivityMediaState GetMediaState() = 0;
+
+  // Returns the window for the activity. This can be used to determine the
+  // stacking order of this activity against others.
+  virtual aura::Window* GetWindow() = 0;
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_ACTIVITY_PUBLIC_ACTIVITY_H_