kjs_dom.cpp

konqueror3 embedded版本, KDE环境下的当家浏览器的嵌入式版本源码包.

  case OnChange:
    setListener(exec,DOM::EventImpl::CHANGE_EVENT,value);
    break;
  case OnClick:
    setListener(exec,DOM::EventImpl::KHTML_ECMA_CLICK_EVENT,value);
    break;
  case OnDblClick:
    setListener(exec,DOM::EventImpl::KHTML_ECMA_DBLCLICK_EVENT,value);
    break;
  case OnDragDrop:
    setListener(exec,DOM::EventImpl::KHTML_DRAGDROP_EVENT,value);
    break;
  case OnError:
    setListener(exec,DOM::EventImpl::KHTML_ERROR_EVENT,value);
    break;
  case OnFocus:
    setListener(exec,DOM::EventImpl::FOCUS_EVENT,value);
    break;
  case OnKeyDown:
    setListener(exec,DOM::EventImpl::KEYDOWN_EVENT,value);
    break;
  case OnKeyPress:
    setListener(exec,DOM::EventImpl::KEYPRESS_EVENT,value);
    break;
  case OnKeyUp:
    setListener(exec,DOM::EventImpl::KEYUP_EVENT,value);
    break;
  case OnLoad:
    setListener(exec,DOM::EventImpl::LOAD_EVENT,value);
    break;
  case OnMouseDown:
    setListener(exec,DOM::EventImpl::MOUSEDOWN_EVENT,value);
    break;
  case OnMouseMove:
    setListener(exec,DOM::EventImpl::MOUSEMOVE_EVENT,value);
    break;
  case OnMouseOut:
    setListener(exec,DOM::EventImpl::MOUSEOUT_EVENT,value);
    break;
  case OnMouseOver:
    setListener(exec,DOM::EventImpl::MOUSEOVER_EVENT,value);
    break;
  case OnMouseUp:
    setListener(exec,DOM::EventImpl::MOUSEUP_EVENT,value);
    break;
  case OnMove:
    setListener(exec,DOM::EventImpl::KHTML_MOVE_EVENT,value);
    break;
  case OnReset:
    setListener(exec,DOM::EventImpl::RESET_EVENT,value);
    break;
  case OnResize:
    setListener(exec,DOM::EventImpl::RESIZE_EVENT,value);
    break;
  case OnSelect:
    setListener(exec,DOM::EventImpl::SELECT_EVENT,value);
    break;
  case OnSubmit:
    setListener(exec,DOM::EventImpl::SUBMIT_EVENT,value);
    break;
  case OnUnload:
    setListener(exec,DOM::EventImpl::UNLOAD_EVENT,value);
    break;
  default:
    // Make sure our layout is up to date 
    DOM::DocumentImpl* docimpl = node.handle()->getDocument();
    if (docimpl)
      docimpl->updateLayout();

    khtml::RenderObject *rend = node.handle() ? node.handle()->renderer() : 0L;

    switch (token) {
      case ScrollLeft:
        if (rend && rend->layer()) {
          if (rend->style()->hidesOverflow())
            rend->layer()->scrollToXOffset(value.toInt32(exec));
          else if (rend->isRoot()) {
            QScrollView* sview = node.ownerDocument().view();
            if (sview)
              sview->setContentsPos(value.toInt32(exec), sview->contentsY());
          }
        }
        break;
      case ScrollTop:
        if (rend && rend->layer()) {
          if (rend->style()->hidesOverflow())
            rend->layer()->scrollToYOffset(value.toInt32(exec));
          else if (rend->isRoot()) {
            QScrollView* sview = node.ownerDocument().view();
            if (sview)
              sview->setContentsPos(sview->contentsX(), value.toInt32(exec));
          }
        }
        break;
      default:
      kdDebug(6070) << "WARNING: DOMNode::putValueProperty unhandled token " << token << endl;
    }
  }
}

Value DOMNode::toPrimitive(ExecState *exec, Type /*preferred*/) const
{
  if (node.isNull())
    return Null();

  return String(toString(exec));
}

UString DOMNode::toString(ExecState *) const
{
  if (node.isNull())
    return "null";
  UString s;

  DOM::Element e = node;
  if ( !e.isNull() ) {
    s = e.nodeName().string();
  } else
    s = className(); // fallback

  return "[object " + s + "]";
}

void DOMNode::setListener(ExecState *exec, int eventId, const Value& func) const
{
  node.handle()->setHTMLEventListener(eventId,Window::retrieveActive(exec)->getJSEventListener(func,true));
}

Value DOMNode::getListener(int eventId) const
{
  DOM::EventListener *listener = node.handle()->getHTMLEventListener(eventId);
  JSEventListener *jsListener = static_cast<JSEventListener*>(listener);
  if ( jsListener && jsListener->listenerObjImp() )
    return jsListener->listenerObj();
  else
    return Null();
}

void DOMNode::pushEventHandlerScope(ExecState *, ScopeChain &) const
{
}

Value DOMNodeProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &args)
{
  KJS_CHECK_THIS( DOMNode, thisObj );
  DOM::Node node = static_cast<DOMNode *>( thisObj.imp() )->toNode();
  switch (id) {
    case DOMNode::HasAttributes:
      return Boolean(node.hasAttributes());
    case DOMNode::HasChildNodes:
      return Boolean(node.hasChildNodes());
    case DOMNode::CloneNode:
      return getDOMNode(exec,node.cloneNode(args[0].toBoolean(exec)));
    case DOMNode::Normalize:
      node.normalize();
      return Undefined();
    case DOMNode::IsSupported:
      return Boolean(node.isSupported(args[0].toString(exec).string(),args[1].toString(exec).string()));
    case DOMNode::AddEventListener: {
        JSEventListener *listener = Window::retrieveActive(exec)->getJSEventListener(args[1]);
        node.addEventListener(args[0].toString(exec).string(),listener,args[2].toBoolean(exec));
        return Undefined();
    }
    case DOMNode::RemoveEventListener: {
        JSEventListener *listener = Window::retrieveActive(exec)->getJSEventListener(args[1]);
        node.removeEventListener(args[0].toString(exec).string(),listener,args[2].toBoolean(exec));
        return Undefined();
    }
    case DOMNode::DispatchEvent:
      return Boolean(node.dispatchEvent(toEvent(args[0])));
    case DOMNode::AppendChild:
      return getDOMNode(exec,node.appendChild(toNode(args[0])));
    case DOMNode::RemoveChild:
      return getDOMNode(exec,node.removeChild(toNode(args[0])));
    case DOMNode::InsertBefore:
      return getDOMNode(exec,node.insertBefore(toNode(args[0]), toNode(args[1])));
    case DOMNode::ReplaceChild:
      return getDOMNode(exec,node.replaceChild(toNode(args[0]), toNode(args[1])));
    case DOMNode::Contains:
    {
	DOM::Node other = toNode(args[0]);
	if (!other.isNull() && node.nodeType()==DOM::Node::ELEMENT_NODE)
	{
	    DOM::NodeBaseImpl *impl = static_cast<DOM::NodeBaseImpl *>(node.handle());
	    bool retval = other.handle()->isAncestor(impl);
	    return Boolean(retval);
	}
        return Undefined();
    }
    case DOMNode::InsertAdjacentHTML:
    {
      // see http://www.faqts.com/knowledge_base/view.phtml/aid/5756
      // and http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/insertAdjacentHTML.asp
      Range range = node.ownerDocument().createRange();

      range.setStartBefore(node);

      DocumentFragment docFrag = range.createContextualFragment(args[1].toString(exec).string());

      DOMString where = args[0].toString(exec).string();

      if (where == "beforeBegin" || where == "BeforeBegin")
        node.parentNode().insertBefore(docFrag, node);
      else if (where == "afterBegin" || where == "AfterBegin")
        node.insertBefore(docFrag, node.firstChild());
      else if (where == "beforeEnd" || where == "BeforeEnd")
        return getDOMNode(exec, node.appendChild(docFrag));
      else if (where == "afterEnd" || where == "AfterEnd")
        if (!node.nextSibling().isNull())
	  node.parentNode().insertBefore(docFrag, node.nextSibling());
	else
	  node.parentNode().appendChild(docFrag);

      return Undefined();
    }
    case DOMNode::Item:
      return getDOMNode(exec, node.childNodes().item(static_cast<unsigned long>(args[0].toNumber(exec))));
  }

  return Undefined();
}

// -------------------------------------------------------------------------

/*
@begin DOMNodeListProtoTable 2
  item		DOMNodeList::Item		DontDelete|Function 1
# IE extension (IE treats DOMNodeList like an HTMLCollection)
  namedItem	DOMNodeList::NamedItem		DontDelete|Function 1
@end
*/
DEFINE_PROTOTYPE("DOMNodeList", DOMNodeListProto)
IMPLEMENT_PROTOFUNC_DOM(DOMNodeListProtoFunc)
IMPLEMENT_PROTOTYPE(DOMNodeListProto,DOMNodeListProtoFunc)

const ClassInfo DOMNodeList::info = { "NodeList", 0, 0, 0 };

DOMNodeList::DOMNodeList(ExecState *exec, const DOM::NodeList& l)
 : DOMObject(DOMNodeListProto::self(exec)), list(l) { }

DOMNodeList::~DOMNodeList()
{
  ScriptInterpreter::forgetDOMObject(list.handle());
}

// We have to implement hasProperty since we don't use a hashtable for 'length'
// ## this breaks "for (..in..)" though.
bool DOMNodeList::hasProperty(ExecState *exec, const Identifier &p) const
{
  if (p == lengthPropertyName)
    return true;
  // ## missing: accept p if array index or item id...
  return ObjectImp::hasProperty(exec, p);
}

Value DOMNodeList::tryGet(ExecState *exec, const Identifier &p) const
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "DOMNodeList::tryGet " << p.ascii() << endl;
#endif
  if (p == lengthPropertyName)
    return Number(list.length());

  // Look in the prototype (for functions) before assuming it's an item's name
  Object proto = Object::dynamicCast(prototype());
  if (proto.isValid() && proto.hasProperty(exec,p))
    return proto.get(exec,p);

  Value result;

  // array index ?
  bool ok;
  long unsigned int idx = p.toULong(&ok);
  if (ok)
    result = getDOMNode(exec,list.item(idx));
  else {
    // Find by ID
    DOM::HTMLElement e;
    unsigned long l = list.length();
    bool found = false;

    for ( unsigned long i = 0; i < l; i++ )
      if ( ( e = list.item( i ) ).id() == p.string() ) {
        result = getDOMNode(exec, list.item( i ) );
        found = true;
        break;
      }

    if ( !found )
      result = ObjectImp::get(exec, p);
  }

  return result;
}

// Need to support both get and call, so that list[0] and list(0) work.
Value DOMNodeList::call(ExecState *exec, Object &thisObj, const List &args)
{
  // This code duplication is necessary, DOMNodeList isn't a DOMFunction
  Value val;
  try {
    val = tryCall(exec, thisObj, args);
  }
  // pity there's no way to distinguish between these in JS code
  catch (...) {
    Object err = Error::create(exec, GeneralError, "Exception from DOMNodeList");
    exec->setException(err);
  }
  return val;
}

Value DOMNodeList::tryCall(ExecState *exec, Object &, const List &args)
{
  // Do not use thisObj here. See HTMLCollection.
  UString s = args[0].toString(exec);

  // index-based lookup?
  bool ok;
  unsigned int u = s.toULong(&ok);
  if (ok)
    return getDOMNode(exec,list.item(u));

  // try lookup by name
  // ### NodeList::namedItem() would be cool to have
  // ### do we need to support the same two arg overload as in HTMLCollection?
  Value result = tryGet(exec, Identifier(s));

  if (result.isValid())
    return result;

  return Undefined();
}

// Not a prototype class currently, but should probably be converted to one
Value DOMNodeListProtoFunc::tryCall(ExecState *exec, Object &thisObj, const List &args)
{
  KJS_CHECK_THIS( KJS::DOMNodeList, thisObj );
  DOM::NodeList list = static_cast<DOMNodeList *>(thisObj.imp())->nodeList();
  switch (id) {
  case KJS::DOMNodeList::Item: