content/public/browser/render_view_host_observer.cc

   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