| // 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 CHROME_BROWSER_TASK_MANAGER_WEB_CONTENTS_INFORMATION_H_ |
| #define CHROME_BROWSER_TASK_MANAGER_WEB_CONTENTS_INFORMATION_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/callback.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "content/public/browser/notification_observer.h" |
| #include "content/public/browser/notification_registrar.h" |
| |
| namespace content { |
| class WebContents; |
| } |
| |
| namespace task_manager { |
| |
| class RendererResource; |
| |
| // This interface gives a WebContentsResourceProvider information about a |
| // category of WebContentses owned by some service. The instances are expected |
| // to be owned by their WebContentsResourceProvider, which will track and adapt |
| // the WebContentses into TaskManager resources. |
| class WebContentsInformation { |
| public: |
| typedef base::Callback<void(content::WebContents*)> NewWebContentsCallback; |
| |
| WebContentsInformation(); |
| virtual ~WebContentsInformation(); |
| |
| // Retrieve all known WebContents instances from the service we're tracking. |
| // Invoke |callback| on each one. |
| virtual void GetAll(const NewWebContentsCallback& callback) = 0; |
| |
| // Return true if |web_contents| is from the service we're tracking. |
| virtual bool CheckOwnership(content::WebContents* web_contents) = 0; |
| |
| // Start listening to the creation of new WebContents instances from |
| // the service. While listening, invoke |callback| on each new instance. |
| virtual void StartObservingCreation( |
| const NewWebContentsCallback& callback) = 0; |
| |
| // Stop listening to creation of new WebContents instances. |
| virtual void StopObservingCreation() = 0; |
| |
| // Create a new task manager resource for the given WebContents instance. |
| virtual scoped_ptr<RendererResource> MakeResource( |
| content::WebContents* web_contents) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(WebContentsInformation); |
| }; |
| |
| // Implements the observer methods (StartObservingCreation() / |
| // StopObservingCreation()) of WebContentsInformation using |
| // NOTIFICATION_WEB_CONTENTS_CONNECTED. |
| class NotificationObservingWebContentsInformation |
| : public WebContentsInformation, |
| public content::NotificationObserver { |
| public: |
| NotificationObservingWebContentsInformation(); |
| virtual ~NotificationObservingWebContentsInformation(); |
| |
| // WebContentsInformation partial implementation. |
| virtual void StartObservingCreation(const NewWebContentsCallback& callback) |
| OVERRIDE; |
| virtual void StopObservingCreation() OVERRIDE; |
| |
| // content::NotificationObserver implementation. |
| virtual void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) OVERRIDE; |
| |
| private: |
| content::NotificationRegistrar registrar_; |
| NewWebContentsCallback observer_callback_; |
| DISALLOW_COPY_AND_ASSIGN(NotificationObservingWebContentsInformation); |
| }; |
| |
| } // namespace task_manager |
| |
| #endif // CHROME_BROWSER_TASK_MANAGER_WEB_CONTENTS_INFORMATION_H_ |