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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 "chrome/renderer/extensions/tab_finder.h"
      6 
      7 #include "content/public/renderer/render_view.h"
      8 #include "extensions/renderer/extension_helper.h"
      9 #include "third_party/WebKit/public/web/WebFrame.h"
     10 #include "third_party/WebKit/public/web/WebView.h"
     11 
     12 using content::RenderView;
     13 
     14 namespace extensions {
     15 
     16 // static
     17 content::RenderView* TabFinder::Find(int tab_id) {
     18   TabFinder finder(tab_id);
     19   RenderView::ForEach(&finder);
     20   return finder.view_;
     21 }
     22 
     23 TabFinder::TabFinder(int tab_id) : tab_id_(tab_id), view_(NULL) {}
     24 
     25 TabFinder::~TabFinder() {}
     26 
     27 // Note: Visit returns false to terminate the iteration.
     28 bool TabFinder::Visit(RenderView* render_view) {
     29   // Only interested in the top frame.
     30   if (render_view->GetWebView()->mainFrame()->parent())
     31     return true;
     32 
     33   ExtensionHelper* helper = ExtensionHelper::Get(render_view);
     34   if (helper && helper->tab_id() == tab_id_)
     35     view_ = render_view;
     36 
     37   return !view_;
     38 }
     39 
     40 }  // namespace extensions
     41