content/public/browser/web_ui_controller.h

   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 CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_H_
   6 #define CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/string16.h"
  10 #include "content/common/content_export.h"
  11
  12 class GURL;
  13
  14 namespace base {
  15 class ListValue;
  16 }
  17
  18 namespace content {
  19
  20 class RenderViewHost;
  21 class WebUI;
  22
  23 // A WebUI page is controller by the embedder's WebUIController object. It
  24 // manages the data source and message handlers.
  25 class CONTENT_EXPORT WebUIController {
  26  public:
  27   explicit WebUIController(WebUI* web_ui) : web_ui_(web_ui) {}
  28   virtual ~WebUIController() {}
  29
  30   // Allows the controller to override handling all messages from the page.
  31   // Return true if the message handling was overridden.
  32   virtual bool OverrideHandleWebUIMessage(const GURL& source_url,
  33                                           const std::string& message,
  34                                           const base::ListValue& args);
  35
  36   // Called when RenderView is first created. This is *not* called for every
  37   // page load because in some cases a RenderView will be reused. In those
  38   // cases, RenderViewReused will be called instead.
  39   virtual void RenderViewCreated(RenderViewHost* render_view_host) {}
  40
  41   // Called when a RenderView is reused to display a page.
  42   virtual void RenderViewReused(RenderViewHost* render_view_host) {}
  43
  44   WebUI* web_ui() const { return web_ui_; }
  45
  46  private:
  47   WebUI* web_ui_;
  48 };
  49
  50 }  // namespace content
  51
  52 #endif  // CONTENT_PUBLIC_BROWSER_WEB_UI_CONTROLLER_H_