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      1 // Copyright 2014 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_INVALIDATIONS_MESSAGE_HANDLER_H_
      6 #define CHROME_BROWSER_UI_WEBUI_INVALIDATIONS_MESSAGE_HANDLER_H_
      7 
      8 #include "base/compiler_specific.h"
      9 #include "base/memory/scoped_ptr.h"
     10 #include "base/memory/weak_ptr.h"
     11 #include "base/values.h"
     12 #include "components/invalidation/invalidation_logger_observer.h"
     13 #include "content/public/browser/web_ui_message_handler.h"
     14 #include "sync/notifier/invalidation_util.h"
     15 
     16 class Profile;
     17 
     18 namespace invalidation {
     19 class InvalidationLogger;
     20 }  // namespace invalidation
     21 
     22 namespace syncer {
     23 class InvalidationHandler;
     24 }  // namespace syncer
     25 
     26 // The implementation for the chrome://invalidations page.
     27 class InvalidationsMessageHandler
     28     : public content::WebUIMessageHandler,
     29       public invalidation::InvalidationLoggerObserver {
     30  public:
     31   InvalidationsMessageHandler();
     32   virtual ~InvalidationsMessageHandler();
     33 
     34   // Implementation of InvalidationLoggerObserver.
     35   virtual void OnRegistrationChange(
     36       const std::multiset<std::string>& registered_handlers) OVERRIDE;
     37   virtual void OnStateChange(const syncer::InvalidatorState& new_state,
     38                              const base::Time& last_change_timestamp)
     39       OVERRIDE;
     40   virtual void OnUpdateIds(const std::string& handler_name,
     41                            const syncer::ObjectIdCountMap& ids_set) OVERRIDE;
     42   virtual void OnDebugMessage(const base::DictionaryValue& details) OVERRIDE;
     43   virtual void OnInvalidation(
     44       const syncer::ObjectIdInvalidationMap& new_invalidations) OVERRIDE;
     45   virtual void OnDetailedStatus(const base::DictionaryValue& network_details)
     46       OVERRIDE;
     47 
     48   // Implementation of WebUIMessageHandler.
     49   virtual void RegisterMessages() OVERRIDE;
     50 
     51   // Triggers the logger to send the current state and objects ids.
     52   void UpdateContent(const base::ListValue* args);
     53 
     54   // Called by the javascript whenever the page is ready to receive messages.
     55   void UIReady(const base::ListValue* args);
     56 
     57   // Calls the InvalidationService for any internal details.
     58   void HandleRequestDetailedStatus(const base::ListValue* args);
     59 
     60  private:
     61   // The pointer to the internal InvalidatorService InvalidationLogger.
     62   // Used to get the information necessary to display to the JS and to
     63   // register ourselves as Observers for any notifications.
     64   invalidation::InvalidationLogger* logger_;
     65 
     66   base::WeakPtrFactory<InvalidationsMessageHandler> weak_ptr_factory_;
     67 
     68   DISALLOW_COPY_AND_ASSIGN(InvalidationsMessageHandler);
     69 };
     70 
     71 #endif  // CHROME_BROWSER_UI_WEBUI_INVALIDATIONS_MESSAGE_HANDLER_H_
     72