kjs_binding.cpp

最新Nokia手机浏览器全套源代码完美版。

ScriptInterpreter::~ScriptInterpreter()
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "ScriptInterpreter::~ScriptInterpreter " << this << " for part=" << m_part << endl;
#endif
}

void ScriptInterpreter::forgetDOMObject( void* objectHandle )
{
  deleteDOMObject( objectHandle );
}

DOMNode *ScriptInterpreter::getDOMNodeForDocument(DOM::DocumentImpl *document, DOM::NodeImpl *node)
{
  QPtrDict<DOMNode> *documentDict = (QPtrDict<DOMNode> *)domNodesPerDocument()[document];
  if (documentDict)
    return (*documentDict)[node];

  return NULL;
}

void ScriptInterpreter::forgetDOMNodeForDocument(DOM::DocumentImpl *document, DOM::NodeImpl *node)
{
  QPtrDict<DOMNode> *documentDict = domNodesPerDocument()[document];
  if (documentDict)
    documentDict->remove(node);
}

void ScriptInterpreter::putDOMNodeForDocument(DOM::DocumentImpl *document, DOM::NodeImpl *nodeHandle, DOMNode *nodeWrapper)
{
  QPtrDict<DOMNode> *documentDict = domNodesPerDocument()[document];
  if (!documentDict) {
    documentDict = new QPtrDict<DOMNode>();
    domNodesPerDocument().insert(document, documentDict);
  }

  documentDict->insert(nodeHandle, nodeWrapper);
}

void ScriptInterpreter::forgetAllDOMNodesForDocument(DOM::DocumentImpl *document)
{
  domNodesPerDocument().remove(document);
}

void ScriptInterpreter::mark()
{
  QPtrDictIterator<QPtrDict<DOMNode> > dictIterator(domNodesPerDocument());

  QPtrDict<DOMNode> *nodeDict;
  while ((nodeDict = dictIterator.current())) {
    QPtrDictIterator<DOMNode> nodeIterator(*nodeDict);

    DOMNode *node;
    while ((node = nodeIterator.current())) {
      // don't mark wrappers for nodes that are no longer in the
      // document - they should not be saved if the node is not
      // otherwise reachable from JS.
      DOM::NodeImpl *n = node->toNode().handle();
      if (n && n->inDocument() && !node->marked())
          node->mark();

      ++nodeIterator;
    }
    ++dictIterator;
  }
}

void ScriptInterpreter::updateDOMNodeDocument(DOM::NodeImpl *node, DOM::DocumentImpl *oldDoc, DOM::DocumentImpl *newDoc)
{
  DOMNode *cachedObject = getDOMNodeForDocument(oldDoc, node);
  if (cachedObject) {
    putDOMNodeForDocument(newDoc, node, cachedObject);
    forgetDOMNodeForDocument(oldDoc, node);
  }
}

bool ScriptInterpreter::wasRunByUserGesture() const
{
  if ( m_evt )
  {
    int id = m_evt->handle()->id();
    bool eventOk = ( // mouse events
      id == DOM::EventImpl::CLICK_EVENT || id == DOM::EventImpl::MOUSEDOWN_EVENT ||
      id == DOM::EventImpl::MOUSEUP_EVENT || id == DOM::EventImpl::KHTML_DBLCLICK_EVENT ||
      id == DOM::EventImpl::KHTML_CLICK_EVENT ||
      // keyboard events
      id == DOM::EventImpl::KEYDOWN_EVENT || id == DOM::EventImpl::KEYPRESS_EVENT ||
      id == DOM::EventImpl::KEYUP_EVENT ||
      // other accepted events
      id == DOM::EventImpl::SELECT_EVENT || id == DOM::EventImpl::CHANGE_EVENT ||
      id == DOM::EventImpl::FOCUS_EVENT || id == DOM::EventImpl::BLUR_EVENT ||
      id == DOM::EventImpl::SUBMIT_EVENT );
    kdDebug(6070) << "Window.open, smart policy: id=" << id << " eventOk=" << eventOk << endl;
    if (eventOk)
      return true;
  } else // no event
  {
    if ( m_inlineCode  && !m_timerCallback )
    {
      // This is the <a href="javascript:window.open('...')> case -> we let it through
      return true;
      kdDebug(6070) << "Window.open, smart policy, no event, inline code -> ok" << endl;
    }
    else // This is the <script>window.open(...)</script> case or a timer callback -> block it
      kdDebug(6070) << "Window.open, smart policy, no event, <script> tag -> refused" << endl;
  }
  return false;
}

#if APPLE_CHANGES && !NOKIA_CHANGES
bool ScriptInterpreter::isGlobalObject(const Value &v)
{
    if (v.type() == ObjectType) {
	Object o = v.toObject (globalExec());
	if (o.classInfo() == &Window::info)
	    return true;
    }
    return false;
}

bool ScriptInterpreter::isSafeScript (const Interpreter *_target)
{
    const KJS::ScriptInterpreter *target = static_cast<const ScriptInterpreter *>(_target);

    return KJS::Window::isSafeScript (this, target);
}

Interpreter *ScriptInterpreter::interpreterForGlobalObject (const ValueImp *imp)
{
    const KJS::Window *win = static_cast<const KJS::Window *>(imp);
    return win->interpreter();
}

void *ScriptInterpreter::createLanguageInstanceForValue (ExecState *exec, Bindings::Instance::BindingLanguage language, const Object &value, const Bindings::RootObject *origin, const Bindings::RootObject *current)
{
    void *result = 0;

    if (language == Bindings::Instance::ObjectiveCLanguage)
	result = createObjcInstanceForValue (exec, value, origin, current);

    if (!result)
	result = Interpreter::createLanguageInstanceForValue (exec, language, value, origin, current);

    return result;
}

#endif

//////

UString::UString(const QString &d)
{
  // reinterpret_cast is ugly but in this case safe, since QChar and UChar have the same
  // memory layout
  rep = UString::Rep::createCopying(reinterpret_cast<const UChar *>(d.unicode()), d.length());
}

UString::UString(const DOMString &d)
{
  if (d.isNull()) {
#if NOKIA_CHANGES
    attachNull();
#else
    attach(&Rep::null);
#endif
    return;
  }
  // reinterpret_cast is ugly but in this case safe, since QChar and UChar have the same
  // memory layout
  rep = UString::Rep::createCopying(reinterpret_cast<const UChar *>(d.unicode()), d.length());
}

DOMString UString::string() const
{
  if (isNull())
    return DOMString();
  if (isEmpty())
    return DOMString("");
  return DOMString((QChar*) data(), size());
}

QString UString::qstring() const
{
  if (isNull())
    return QString();
  if (isEmpty())
    return QString("");
  return QString((QChar*) data(), size());
}

QConstString UString::qconststring() const
{
  return QConstString((QChar*) data(), size());
}

DOMString Identifier::string() const
{
  if (isNull())
    return DOMString();
  if (isEmpty())
    return DOMString("");
  return DOMString((QChar*) data(), size());
}

QString Identifier::qstring() const
{
  if (isNull())
    return QString();
  if (isEmpty())
    return QString("");
  return QString((QChar*) data(), size());
}

DOM::Node toNode(const Value& val)
{
  Object obj = Object::dynamicCast(val);
  if (obj.isNull() || !obj.inherits(&DOMNode::info))
    return DOM::Node();

  const DOMNode *dobj = static_cast<const DOMNode*>(obj.imp());
  return dobj->toNode();
}

Value getStringOrNull(DOMString s)
{
  if (s.isNull())
    return Null();
  else
    return String(s);
}

QVariant ValueToVariant(ExecState* exec, const Value &val) {
  QVariant res;
  switch (val.type()) {
  case BooleanType:
    res = QVariant(val.toBoolean(exec), 0);
    break;
  case NumberType:
    res = QVariant(val.toNumber(exec));
    break;
  case StringType:
    res = QVariant(val.toString(exec).qstring());
    break;
  default:
    // everything else will be 'invalid'
    break;
  }
  return res;
}

}