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      1 // Copyright 2013 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_MEMORY_INTERNALS_MEMORY_INTERNALS_HANDLER_H_
      6 #define CHROME_BROWSER_UI_WEBUI_MEMORY_INTERNALS_MEMORY_INTERNALS_HANDLER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/ref_counted.h"
     12 #include "content/public/browser/web_ui_message_handler.h"
     13 
     14 namespace base {
     15 class ListValue;
     16 }
     17 
     18 class MemoryInternalsProxy;
     19 
     20 // This class handles messages to and from MemoryInternalsUI.
     21 // It does all its work on the IO thread through the proxy below.
     22 class MemoryInternalsHandler : public content::WebUIMessageHandler {
     23  public:
     24   MemoryInternalsHandler();
     25   virtual ~MemoryInternalsHandler();
     26 
     27   virtual void RegisterMessages() OVERRIDE;
     28 
     29   // JavaScript message handlers.
     30   void OnJSUpdate(const base::ListValue* list);
     31 
     32   // MemoryInternals message handlers.
     33   void OnUpdate(const base::string16& update);
     34 
     35  private:
     36   scoped_refptr<MemoryInternalsProxy> proxy_;
     37 
     38   DISALLOW_COPY_AND_ASSIGN(MemoryInternalsHandler);
     39 };
     40 
     41 #endif  // CHROME_BROWSER_UI_WEBUI_MEMORY_INTERNALS_MEMORY_INTERNALS_HANDLER_H_
     42