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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_PROXY_H_ | |
| 6 #define CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_PROXY_H_ | |
| 7 | |
| 8 #include "base/memory/ref_counted.h" | |
| 9 #include "base/sequenced_task_runner_helpers.h" | |
| 10 #include "base/string16.h" | |
| 11 #include "chrome/browser/media/media_internals_observer.h" | |
| 12 #include "content/public/browser/browser_thread.h" | |
| 13 #include "content/public/browser/notification_observer.h" | |
| 14 #include "content/public/browser/notification_registrar.h" | |
| 15 #include "net/base/net_log.h" | |
| 16 | |
| 17 class IOThread; | |
| 18 class MediaInternalsMessageHandler; | |
| 19 | |
| 20 namespace base { | |
| 21 class ListValue; | |
| 22 class Value; | |
| 23 } | |
| 24 | |
| 25 // This class is a proxy between MediaInternals (on the IO thread) and | |
| 26 // MediaInternalsMessageHandler (on the UI thread). | |
| 27 // It is ref_counted to ensure that it completes all pending Tasks on both | |
| 28 // threads before destruction. | |
| 29 class MediaInternalsProxy | |
| 30 : public MediaInternalsObserver, | |
| 31 public base::RefCountedThreadSafe< | |
| 32 MediaInternalsProxy, | |
| 33 content::BrowserThread::DeleteOnUIThread>, | |
| 34 public net::NetLog::ThreadSafeObserver, | |
| 35 public content::NotificationObserver { | |
| 36 public: | |
| 37 MediaInternalsProxy(); | |
| 38 | |
| 39 // content::NotificationObserver implementation. | |
| 40 virtual void Observe(int type, | |
| 41 const content::NotificationSource& source, | |
| 42 const content::NotificationDetails& details) OVERRIDE; | |
| 43 | |
| 44 // Register a Handler and start receiving callbacks from MediaInternals. | |
| 45 void Attach(MediaInternalsMessageHandler* handler); | |
| 46 | |
| 47 // Unregister the same and stop receiving callbacks. | |
| 48 void Detach(); | |
| 49 | |
| 50 // Have MediaInternals send all the data it has. | |
| 51 void GetEverything(); | |
| 52 | |
| 53 // MediaInternalsObserver implementation. Called on the IO thread. | |
| 54 virtual void OnUpdate(const string16& update) OVERRIDE; | |
| 55 | |
| 56 // net::NetLog::ThreadSafeObserver implementation. Callable from any thread: | |
| 57 virtual void OnAddEntry(const net::NetLog::Entry& entry) OVERRIDE; | |
| 58 | |
| 59 private: | |
| 60 friend struct content::BrowserThread::DeleteOnThread< | |
| 61 content::BrowserThread::UI>; | |
| 62 friend class base::DeleteHelper<MediaInternalsProxy>; | |
| 63 virtual ~MediaInternalsProxy(); | |
| 64 | |
| 65 // Build a dictionary mapping constant names to values. | |
| 66 base::Value* GetConstants(); | |
| 67 | |
| 68 void ObserveMediaInternalsOnIOThread(); | |
| 69 void StopObservingMediaInternalsOnIOThread(); | |
| 70 void GetEverythingOnIOThread(); | |
| 71 void UpdateUIOnUIThread(const string16& update); | |
| 72 | |
| 73 // Put |entry| on a list of events to be sent to the page. | |
| 74 void AddNetEventOnUIThread(base::Value* entry); | |
| 75 | |
| 76 // Send all pending events to the page. | |
| 77 void SendNetEventsOnUIThread(); | |
| 78 | |
| 79 // Call a JavaScript function on the page. Takes ownership of |args|. | |
| 80 void CallJavaScriptFunctionOnUIThread(const std::string& function, | |
| 81 base::Value* args); | |
| 82 | |
| 83 MediaInternalsMessageHandler* handler_; | |
| 84 IOThread* io_thread_; | |
| 85 scoped_ptr<base::ListValue> pending_net_updates_; | |
| 86 content::NotificationRegistrar registrar_; | |
| 87 | |
| 88 DISALLOW_COPY_AND_ASSIGN(MediaInternalsProxy); | |
| 89 }; | |
| 90 | |
| 91 #endif // CHROME_BROWSER_UI_WEBUI_MEDIA_MEDIA_INTERNALS_PROXY_H_ | |
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Chromium Code Reviews
Issue 12153002:
Move chrome://media-internals to content. This allows us to hide implementation details from the pu… (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/