Implemented Browser Plugin (NOT FOR REVIEW)

content/browser/browser_plugin/browser_plugin_web_contents_observer.h

-// 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_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_WEB_CONTENTS_OBSERVER_H__
-#define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_WEB_CONTENTS_OBSERVER_H__
-#pragma once
-
-#include <map>
-
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "ui/gfx/size.h"
-
-class WebContentsImpl;
-
-namespace content {
-
-class BrowserPluginWebContentsObserver: public WebContentsObserver,
-                                        public NotificationObserver {
- public:
-  BrowserPluginWebContentsObserver(WebContentsImpl* web_contents);
-
-  virtual ~BrowserPluginWebContentsObserver();
-
-  // A Host BrowserPluginWebContentsObserver keeps track of
-  // its guests so that if it navigates away, its associated RenderView
-  // crashes or it is hidden, it takes appropriate action on the guest.
-  void AddGuest(WebContentsImpl* guest, int64 frame_id);
-
-  void RemoveGuest(WebContentsImpl* guest);
-
-  WebContentsImpl* host() const { return host_; }
-
-  void set_host(WebContentsImpl* host) { host_ = host; }
-
-  int instance_id() const { return instance_id_; }
-
-  void set_instance_id(int instance_id) { instance_id_ = instance_id; }
-
-  // WebContentObserver implementation.
-
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  virtual void DidCommitProvisionalLoadForFrame(
-      int64 frame_id,
-      bool is_main_frame,
-      const GURL& url,
-      PageTransition transition_type) OVERRIDE;
-
-  virtual void RenderViewDeleted(
-      RenderViewHost* render_view_host) OVERRIDE;
-
-  virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
-
-  virtual void WebContentsDestroyed(WebContents* web_contents) OVERRIDE;
-
- private:
-  typedef std::map<WebContentsImpl*, int64> GuestMap;
-
-  void OnOpenChannelToBrowserPlugin(int32 instance_id,
-                                    long long frame_id,
-                                    const std::string& src,
-                                    const gfx::Size& size);
-
-  void OnGuestReady();
-
-  void OnResizeGuest(int width, int height);
-
-  void OnRendererPluginChannelCreated(const IPC::ChannelHandle& handle);
-
-  void DestroyGuests();
-
-  // NotificationObserver method override.
-  virtual void Observe(int type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details) OVERRIDE;
-
-  // A scoped container for notification registries.
-  NotificationRegistrar registrar_;
-
-  WebContentsImpl* host_;
-
-  // An identifier that uniquely identifies a browser plugin container
-  // within a host.
-  int instance_id_;
-
-  GuestMap guests_;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_WEB_CONTENTS_OBSERVER_H_