| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_OBSERVER_H_ |
| #define CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_OBSERVER_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "ipc/ipc_listener.h" |
| #include "ipc/ipc_sender.h" |
| #include "content/common/content_export.h" |
| |
| class GURL; |
| |
| namespace content { |
| |
| class RenderViewHost; |
| class RenderViewHostImpl; |
| |
| // An observer API implemented by classes which want to filter IPC messages from |
| // RenderViewHost. |
| class CONTENT_EXPORT RenderViewHostObserver : public IPC::Listener, |
| public IPC::Sender { |
| public: |
| |
| protected: |
| explicit RenderViewHostObserver(RenderViewHost* render_view_host); |
| |
| virtual ~RenderViewHostObserver(); |
| |
| // Invoked after the RenderViewHost is created in the renderer process. After |
| // this point, messages can be sent to it (or to observers in the renderer). |
| virtual void RenderViewHostInitialized(); |
| |
| // Invoked when the RenderViewHost is being destroyed. Gives subclasses a |
| // chance to cleanup. The base implementation will delete the object. |
| // |render_view_host| is passed as an argument since render_view_host() will |
| // return NULL once this method enters. |
| virtual void RenderViewHostDestroyed(RenderViewHost* render_view_host); |
| |
| // IPC::Listener implementation. |
| virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; |
| |
| // IPC::Sender implementation. |
| virtual bool Send(IPC::Message* message) OVERRIDE; |
| |
| RenderViewHost* render_view_host() const; |
| int routing_id() { return routing_id_; } |
| |
| private: |
| friend class RenderViewHostImpl; |
| |
| // Invoked from RenderViewHost. Invokes RenderViewHostDestroyed and NULL out |
| // |render_view_host_|. |
| void RenderViewHostDestruction(); |
| |
| RenderViewHostImpl* render_view_host_; |
| |
| // The routing ID of the associated RenderViewHost. |
| int routing_id_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RenderViewHostObserver); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_OBSERVER_H_ |