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      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 #include "content/public/browser/render_view_host_observer.h"
      6 
      7 #include "content/browser/renderer_host/render_view_host_impl.h"
      8 
      9 namespace content {
     10 
     11 RenderViewHostObserver::RenderViewHostObserver(RenderViewHost* render_view_host)
     12     : render_view_host_(static_cast<RenderViewHostImpl*>(render_view_host)),
     13       routing_id_(render_view_host_->GetRoutingID()) {
     14   render_view_host_->AddObserver(this);
     15 }
     16 
     17 RenderViewHostObserver::~RenderViewHostObserver() {
     18   if (render_view_host_)
     19     render_view_host_->RemoveObserver(this);
     20 }
     21 
     22 void RenderViewHostObserver::RenderViewHostInitialized() {
     23 }
     24 
     25 void RenderViewHostObserver::RenderViewHostDestroyed(RenderViewHost* rvh) {
     26   delete this;
     27 }
     28 
     29 void RenderViewHostObserver::Navigate(const GURL& url) {
     30 }
     31 
     32 bool RenderViewHostObserver::OnMessageReceived(const IPC::Message& message) {
     33   return false;
     34 }
     35 
     36 bool RenderViewHostObserver::Send(IPC::Message* message) {
     37   if (!render_view_host_) {
     38     delete message;
     39     return false;
     40   }
     41 
     42   return render_view_host_->Send(message);
     43 }
     44 
     45 RenderViewHost* RenderViewHostObserver::render_view_host() const {
     46   return render_view_host_;
     47 }
     48 
     49 void RenderViewHostObserver::RenderViewHostDestruction() {
     50   render_view_host_->RemoveObserver(this);
     51   RenderViewHost* rvh = render_view_host_;
     52   render_view_host_ = NULL;
     53   RenderViewHostDestroyed(rvh);
     54 }
     55 
     56 }  // namespace content
     57