chrome/browser/extensions/extension_web_contents_observer.h

   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_EXTENSIONS_EXTENSION_WEB_CONTENTS_OBSERVER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_WEB_CONTENTS_OBSERVER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/strings/string16.h"
  10 #include "content/public/browser/web_contents_observer.h"
  11 #include "content/public/browser/web_contents_user_data.h"
  12 #include "extensions/common/stack_frame.h"
  13
  14 namespace content {
  15 class BrowserContext;
  16 }
  17
  18 namespace extensions {
  19 class Extension;
  20 struct Message;
  21
  22 // A web contents observer that's used for WebContents in renderer and extension
  23 // processes. Grants the renderer access to certain URL patterns for extensions,
  24 // notifies the renderer that the extension was loaded and routes messages to
  25 // the MessageService.
  26 class ExtensionWebContentsObserver
  27     : public content::WebContentsObserver,
  28       public content::WebContentsUserData<ExtensionWebContentsObserver> {
  29  public:
  30   virtual ~ExtensionWebContentsObserver();
  31
  32  private:
  33   explicit ExtensionWebContentsObserver(content::WebContents* web_contents);
  34   friend class content::WebContentsUserData<ExtensionWebContentsObserver>;
  35
  36   // content::WebContentsObserver overrides.
  37   virtual void RenderViewCreated(
  38       content::RenderViewHost* render_view_host) OVERRIDE;
  39   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  40
  41   void OnPostMessage(int port_id, const Message& message);
  42   void OnDetailedConsoleMessageAdded(const base::string16& message,
  43                                      const base::string16& source,
  44                                      const StackTrace& stack_trace,
  45                                      int32 severity_level);
  46
  47
  48   // Gets the extension or app (if any) that is associated with a RVH.
  49   const Extension* GetExtension(content::RenderViewHost* render_view_host);
  50
  51   // The browser context for the web contents this is observing.
  52   content::BrowserContext* browser_context_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(ExtensionWebContentsObserver);
  55 };
  56
  57 }  // namespace extensions
  58
  59 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_WEB_CONTENTS_OBSERVER_H_