text: /**
   * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
   *
   * 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"
  
  #if ENABLE(WML)
  #include "WMLTaskElement.h"
  
  #include "WMLAnchorElement.h"
  #include "WMLDoElement.h"
  #include "WMLNames.h"
  #include "WMLOnEventElement.h"
  #include "WMLPageState.h"
  #include "WMLSetvarElement.h"
  
  namespace WebCore {
  
  using namespace WMLNames;
  
  WMLTaskElement::WMLTaskElement(const QualifiedName& tagName, Document* doc)
      : WMLElement(tagName, doc)
  {
  }
  
  WMLTaskElement::~WMLTaskElement()
  {
  }
  
  void WMLTaskElement::insertedIntoDocument()
  {
      WMLElement::insertedIntoDocument();
  
      Node* parent = parentNode();
      if (!parent || !parent->isWMLElement())
          return;
  
      if (parent->hasTagName(anchorTag))
          static_cast<WMLAnchorElement*>(parent)->registerTask(this);
      else if (parent->hasTagName(doTag))
          static_cast<WMLDoElement*>(parent)->registerTask(this);
      else if (parent->hasTagName(oneventTag))
          static_cast<WMLOnEventElement*>(parent)->registerTask(this);
  }
  
  void WMLTaskElement::removedFromDocument()
  {
      Node* parent = parentNode();
      if (parent && parent->isWMLElement()) {
          if (parent->hasTagName(anchorTag))
              static_cast<WMLAnchorElement*>(parent)->deregisterTask(this);
          else if (parent->hasTagName(doTag))
              static_cast<WMLDoElement*>(parent)->deregisterTask(this);
          else if (parent->hasTagName(oneventTag))
              static_cast<WMLOnEventElement*>(parent)->deregisterTask(this);
      }
  
      WMLElement::removedFromDocument();
  }
  
  void WMLTaskElement::registerVariableSetter(WMLSetvarElement* element)
  {
      ASSERT(m_variableSetterElements.find(element) == WTF::notFound);
      m_variableSetterElements.append(element);
  }
  
  void WMLTaskElement::deregisterVariableSetter(WMLSetvarElement* element)
  {
      size_t position = m_variableSetterElements.find(element);
      ASSERT(position != WTF::notFound);
      m_variableSetterElements.remove(position);
  }
  
  void WMLTaskElement::storeVariableState(WMLPageState* pageState)
  {
      if (!pageState || m_variableSetterElements.isEmpty())
          return;
  
      WMLVariableMap variables;
      Vector<WMLSetvarElement*>::iterator it = m_variableSetterElements.begin();
      Vector<WMLSetvarElement*>::iterator end = m_variableSetterElements.end();
  
      for (; it != end; ++it) {
          WMLSetvarElement* setterElement = (*it);
  
          String name = setterElement->name();
          if (name.isEmpty())
              continue;
  
          String value = setterElement->value();
          variables.set(name, value);
  
          // The next setvar element may depend on this variable value. It's safe to store the current
          // name value pair in the page state, as the whole page state is replaced soon by this new map
          pageState->storeVariable(name, value);
      }
  
      pageState->storeVariables(variables);
  }
  
  }
  
  #endif
  