content/renderer/web_ui_extension_data.h

   1 // Copyright 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 CONTENT_RENDERER_WEB_UI_EXTENSION_DATA_H_
   6 #define CONTENT_RENDERER_WEB_UI_EXTENSION_DATA_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/basictypes.h"
  12 #include "content/public/renderer/render_view_observer.h"
  13 #include "content/public/renderer/render_view_observer_tracker.h"
  14
  15 namespace content {
  16
  17 class WebUIExtensionData
  18     : public RenderViewObserver,
  19       public RenderViewObserverTracker<WebUIExtensionData> {
  20  public:
  21   explicit WebUIExtensionData(RenderView* render_view);
  22   ~WebUIExtensionData() override;
  23
  24   // Returns value for a given |key|. Will return an empty string if no such key
  25   // exists in the |variable_map_|.
  26   std::string GetValue(const std::string& key) const;
  27
  28  private:
  29   // RenderViewObserver implementation.
  30   bool OnMessageReceived(const IPC::Message& message) override;
  31
  32   void OnSetWebUIProperty(const std::string& name, const std::string& value);
  33
  34   std::map<std::string, std::string> variable_map_;
  35
  36   DISALLOW_IMPLICIT_CONSTRUCTORS(WebUIExtensionData);
  37 };
  38
  39 }  // namespace content
  40
  41 #endif  // CONTENT_RENDERER_WEB_UI_EXTENSION_DATA_H_