text: /*
   * Copyright (C) 2006, 2007, 2009 Apple Inc. All rights reserved.
   * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Library General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public License
   * along with this library; see the file COPYING.LIB.  If not, write to
   * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   * Boston, MA 02110-1301, USA.
   */
  
  #include "config.h"
  #include "PageGroupLoadDeferrer.h"
  
  #include "Document.h"
  #include "DocumentParser.h"
  #include "Frame.h"
  #include "Page.h"
  #include "PageGroup.h"
  #include "ScriptRunner.h"
  #include <wtf/HashSet.h>
  
  namespace WebCore {
  
  using namespace std;
  
  PageGroupLoadDeferrer::PageGroupLoadDeferrer(Page* page, bool deferSelf)
  {
      const HashSet<Page*>& pages = page->group().pages();
  
      HashSet<Page*>::const_iterator end = pages.end();
      for (HashSet<Page*>::const_iterator it = pages.begin(); it != end; ++it) {
          Page* otherPage = *it;
          if ((deferSelf || otherPage != page)) {
              if (!otherPage->defersLoading()) {
                  m_deferredFrames.append(otherPage->mainFrame());
  
                  // This code is not logically part of load deferring, but we do not want JS code executed beneath modal
                  // windows or sheets, which is exactly when PageGroupLoadDeferrer is used.
                  for (Frame* frame = otherPage->mainFrame(); frame; frame = frame->tree()->traverseNext())
                      frame->document()->suspendScheduledTasks(ActiveDOMObject::WillDeferLoading);
              }
          }
      }
  
      size_t count = m_deferredFrames.size();
      for (size_t i = 0; i < count; ++i)
          if (Page* page = m_deferredFrames[i]->page())
              page->setDefersLoading(true);
  }
  
  PageGroupLoadDeferrer::~PageGroupLoadDeferrer()
  {
      for (size_t i = 0; i < m_deferredFrames.size(); ++i) {
          if (Page* page = m_deferredFrames[i]->page()) {
              page->setDefersLoading(false);
  
              for (Frame* frame = page->mainFrame(); frame; frame = frame->tree()->traverseNext())
                  frame->document()->resumeScheduledTasks(ActiveDOMObject::WillDeferLoading);
          }
      }
  }
  
  
  } // namespace WebCore
  