Decoupling visibility states from webcontent, adding visibility management in ResourceManager

athena/content/app_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_CONTENT_APP_ACTIVITY_H_
 #define ATHENA_CONTENT_APP_ACTIVITY_H_
 
 #include "athena/activity/public/activity.h"
 #include "athena/activity/public/activity_view_model.h"
 #include "content/public/browser/web_contents_observer.h"
@@ skipping 10 matching lines @@
 namespace athena {
 
 class AppActivityRegistry;
 
 // The activity object for a hosted V2 application.
 class AppActivity : public Activity,
                     public ActivityViewModel,
                     public content::WebContentsObserver {
  public:
   explicit AppActivity(const std::string& app_id);
-  virtual ~AppActivity();
 
   // Activity:
   virtual athena::ActivityViewModel* GetActivityViewModel() OVERRIDE;
   virtual void SetCurrentState(Activity::ActivityState state) OVERRIDE;
   virtual ActivityState GetCurrentState() OVERRIDE;
   virtual bool IsVisible() OVERRIDE;
   virtual ActivityMediaState GetMediaState() OVERRIDE;
   virtual aura::Window* GetWindow() OVERRIDE;
 
   // ActivityViewModel:
   virtual void Init() OVERRIDE;
   virtual SkColor GetRepresentativeColor() const OVERRIDE;
   virtual base::string16 GetTitle() const OVERRIDE;
   virtual bool UsesFrame() const OVERRIDE;
   virtual views::View* GetContentsView() OVERRIDE;
   virtual void CreateOverviewModeImage() OVERRIDE;
   virtual gfx::ImageSkia GetOverviewModeImage() OVERRIDE;
 
  protected:
-  // content::WebContentsObserver:
+  virtual ~AppActivity();
+
+ // content::WebContentsObserver:
   virtual void TitleWasSet(content::NavigationEntry* entry,
                            bool explicit_set) OVERRIDE;
   virtual void DidUpdateFaviconURL(
       const std::vector<content::FaviconURL>& candidates) OVERRIDE;
 
- protected:
   virtual content::WebContents* GetWebContents() = 0;
 
  private:
   // Register this activity with its application.
   void RegisterActivity();
 
+  // Make the content visible. This call should only be paired with
+  // MakeInvisible. Note: Upon start the content is visible.
+  // TODO(skuhne): If this can be combined with web_activity, move this into a
+  // separate class.
+  void MakeVisible();
+
+  // Make the content invisible. This call should only be paired with
+  // MakeVisible.
+  // TODO(skuhne): If this can be combined with web_activity, move this into a
+  // separate class.
+  void MakeInvisible();
+
   const std::string app_id_;
 
   views::WebView* web_view_;
 
   // The current state for this activity.
   ActivityState current_state_;
 
   // The image which will be used in overview mode.
   gfx::ImageSkia overview_mode_image_;
 
   // If known the registry which holds all activities for the associated app.
   // This object is owned by |AppRegistry| and will be a valid pointer as long
   // as this object lives.
   AppActivityRegistry* app_activity_registry_;
 
   DISALLOW_COPY_AND_ASSIGN(AppActivity);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_CONTENT_APP_ACTIVITY_H_