Browser plugin: Implement titleChanged event.

content/browser/browser_plugin/browser_plugin_guest.cc

 // 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.
 
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 
 #include <algorithm>
 
 #include "base/string_util.h"
 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
 #include "content/browser/browser_plugin/browser_plugin_guest_helper.h"
 #include "content/browser/browser_plugin/browser_plugin_host_factory.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/common/browser_plugin_messages.h"
 #include "content/common/view_messages.h"
 #include "content/port/browser/render_view_host_delegate_view.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/browser/resource_request_details.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/common/result_codes.h"
 #include "content/browser/browser_plugin/browser_plugin_host_factory.h"
 #include "net/base/net_errors.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
@@ skipping 27 matching lines @@
           base::TimeDelta::FromMilliseconds(kGuestHangTimeoutMs)),
       focused_(focused),
       visible_(visible) {
   DCHECK(web_contents);
   // |render_view_host| manages the ownership of this BrowserPluginGuestHelper.
   new BrowserPluginGuestHelper(this, render_view_host);
 
   notification_registrar_.Add(
       this, content::NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
       content::Source<content::WebContents>(web_contents));
+  notification_registrar_.Add(
+      this, content::NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED,
+      content::Source<content::WebContents>(web_contents));
 }
 
 BrowserPluginGuest::~BrowserPluginGuest() {
 }
 
 // static
 BrowserPluginGuest* BrowserPluginGuest::Create(
     int instance_id,
     WebContentsImpl* web_contents,
     content::RenderViewHost* render_view_host,
@@ skipping 19 matching lines @@
       DCHECK_EQ(Source<WebContents>(source).ptr(), web_contents());
       ResourceRedirectDetails* resource_redirect_details =
             Details<ResourceRedirectDetails>(details).ptr();
       bool is_top_level =
           resource_redirect_details->resource_type == ResourceType::MAIN_FRAME;
       LoadRedirect(resource_redirect_details->url,
                    resource_redirect_details->new_url,
                    is_top_level);
       break;
     }
+    case NOTIFICATION_WEB_CONTENTS_TITLE_UPDATED: {
+      DCHECK_EQ(Source<WebContents>(source).ptr(), web_contents());
+      std::pair<NavigationEntry*, bool>* title =
+          Details<std::pair<NavigationEntry*, bool> >(details).ptr();
+      if (title->first) {
+        string16 title_text = title->first->GetTitle();
+        TitleChange(title_text);
+      }
+      break;
+    }
     default:
       NOTREACHED() << "Unexpected notification sent.";
       break;
   }
 }
 
 bool BrowserPluginGuest::ViewTakeFocus(bool reverse) {
   SendMessageToEmbedder(
       new BrowserPluginMsg_AdvanceFocus(instance_id(), reverse));
   return true;
@@ skipping 315 matching lines @@
 
 void BrowserPluginGuest::LoadRedirect(
     const GURL& old_url,
     const GURL& new_url,
     bool is_top_level) {
   SendMessageToEmbedder(
       new BrowserPluginMsg_LoadRedirect(
           instance_id(), old_url, new_url, is_top_level));
 }
 
+void BrowserPluginGuest::TitleChange(const string16& title) {
+  SendMessageToEmbedder(
+      new BrowserPluginMsg_TitleChange(instance_id(), title));
+}
+
 void BrowserPluginGuest::DidCommitProvisionalLoadForFrame(
     int64 frame_id,
     bool is_main_frame,
     const GURL& url,
     PageTransition transition_type,
     RenderViewHost* render_view_host) {
   // Inform its embedder of the updated URL.
   BrowserPluginMsg_LoadCommit_Params params;
   params.url = url;
   params.is_top_level = is_main_frame;
   params.process_id = render_view_host->GetProcess()->GetID();
   params.current_entry_index =
       web_contents()->GetController().GetCurrentEntryIndex();
   params.entry_count =
       web_contents()->GetController().GetEntryCount();
   SendMessageToEmbedder(
       new BrowserPluginMsg_LoadCommit(instance_id(), params));
   RecordAction(UserMetricsAction("BrowserPlugin.Guest.DidNavigate"));
+
+  // Also update title on commit, since the notifications only occur for
+  // changes to existing titles, not updates due to back/forward or to
+  // new pages with no titles.
+  TitleChange(web_contents()->GetTitle());
 }
 
 void BrowserPluginGuest::DidStopLoading(RenderViewHost* render_view_host) {
   SendMessageToEmbedder(new BrowserPluginMsg_LoadStop(instance_id()));
 }
 
 void BrowserPluginGuest::RenderViewReady() {
   // TODO(fsamuel): Investigate whether it's possible to update state earlier
   // here (see http://www.crbug.com/158151).
   RenderViewHost* render_view_host = web_contents()->GetRenderViewHost();
@@ skipping 35 matching lines @@
     default:
       break;
   }
 }
 
 void BrowserPluginGuest::SendMessageToEmbedder(IPC::Message* msg) {
   embedder_web_contents_->GetRenderProcessHost()->Send(msg);
 }
 
 }  // namespace content