kjs_dom.cpp

khtml在gtk上的移植版本

void DOMNode::tryPut(ExecState *exec, const Identifier& propertyName, const Value& value, int attr)
{
#ifdef KJS_VERBOSE
  kdDebug(6070) << "DOMNode::tryPut " << propertyName.qstring() << endl;
#endif
  DOMObjectLookupPut<DOMNode,DOMObject>(exec, propertyName, value, attr,
                                        &DOMNodeTable, this );
}

void DOMNode::putValue(ExecState *exec, int token, const Value& value, int /*attr*/)
{
  switch (token) {
  case NodeValue:
    node.setNodeValue(value.toString(exec).string());
    break;
  case Prefix:
    node.setPrefix(value.toString(exec).string());
    break;
  case OnAbort:
    setListener(exec,DOM::EventImpl::ABORT_EVENT,value);
    break;
  case OnBlur:
    setListener(exec,DOM::EventImpl::BLUR_EVENT,value);
    break;
  case OnChange:
    setListener(exec,DOM::EventImpl::CHANGE_EVENT,value);
    break;
  case OnClick:
    setListener(exec,DOM::EventImpl::KHTML_CLICK_EVENT,value);
    break;
  case OnContextMenu:
    setListener(exec,DOM::EventImpl::CONTEXTMENU_EVENT,value);
    break;
  case OnDblClick:
    setListener(exec,DOM::EventImpl::KHTML_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 OnInput:
    setListener(exec,DOM::EventImpl::INPUT_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 OnBeforeCut:
    setListener(exec,DOM::EventImpl::BEFORECUT_EVENT,value);
    break;
  case OnCut:
    setListener(exec,DOM::EventImpl::CUT_EVENT,value);
    break;
  case OnBeforeCopy:
    setListener(exec,DOM::EventImpl::BEFORECOPY_EVENT,value);
    break;
  case OnCopy:
    setListener(exec,DOM::EventImpl::COPY_EVENT,value);
    break;
  case OnBeforePaste:
    setListener(exec,DOM::EventImpl::BEFOREPASTE_EVENT,value);
    break;
  case OnPaste:
    setListener(exec,DOM::EventImpl::PASTE_EVENT,value);
    break;
  case OnDragEnter:
    setListener(exec,DOM::EventImpl::DRAGENTER_EVENT,value);
    break;
  case OnDragOver:
    setListener(exec,DOM::EventImpl::DRAGOVER_EVENT,value);
    break;
  case OnDragLeave:
    setListener(exec,DOM::EventImpl::DRAGLEAVE_EVENT,value);
    break;
  case OnDrop:
    setListener(exec,DOM::EventImpl::DROP_EVENT,value);
    break;
  case OnDragStart:
    setListener(exec,DOM::EventImpl::DRAGSTART_EVENT,value);
    break;
  case OnDrag:
    setListener(exec,DOM::EventImpl::DRAG_EVENT,value);
    break;
  case OnDragEnd:
    setListener(exec,DOM::EventImpl::DRAGEND_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 OnScroll:
    setListener(exec,DOM::EventImpl::SCROLL_EVENT,value);
#if APPLE_CHANGES
  case OnSearch:
    setListener(exec,DOM::EventImpl::SEARCH_EVENT,value);
    break;
#endif
  case OnSelect:
    setListener(exec,DOM::EventImpl::SELECT_EVENT,value);
    break;
  case OnSelectStart:
    setListener(exec,DOM::EventImpl::SELECTSTART_EVENT,value);
    break;
  case OnSubmit:
    setListener(exec,DOM::EventImpl::SUBMIT_EVENT,value);
    break;
  case OnUnload:
    setListener(exec,DOM::EventImpl::UNLOAD_EVENT,value);
    break;
  case ScrollTop: {
    khtml::RenderObject *rend = node.handle() ? node.handle()->renderer() : 0L;
    if (rend && rend->hasOverflowClip())
        rend->layer()->scrollToYOffset(value.toInt32(exec));
    break;
  }
  case ScrollLeft: {
    khtml::RenderObject *rend = node.handle() ? node.handle()->renderer() : 0L;
    if (rend && rend->hasOverflowClip())
      rend->layer()->scrollToXOffset(value.toInt32(exec));
    break;
  }
  default:
    kdWarning() << "DOMNode::putValue 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 = UString(e.nodeName().string());
  } else
    s = className(); // fallback

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

void DOMNode::setListener(ExecState *exec, int eventId, 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)
{
  if (!thisObj.inherits(&DOMNode::info)) {
    Object err = Error::create(exec,TypeError);
    exec->setException(err);
    return err;
  }
  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]);
        if (listener)
            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]);
        if (listener)
            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:
    {
        int exceptioncode=0;
	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 = !impl->checkNoOwner(other.handle(),exceptioncode);
	    return Boolean(retval && exceptioncode == 0);
	}
        return Undefined();
    }
    case DOMNode::Item:
      return getDOMNode(exec, node.childNodes().item(static_cast<unsigned long>(args[0].toNumber(exec))));
  }

  return Undefined();
}

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

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

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

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

  return String(toString(exec));
}



// We have to implement hasProperty since we don't use a hashtable for 'length' and 'item'
// ## this breaks "for (..in..)" though.
bool DOMNodeList::hasProperty(ExecState *exec, const Identifier &p) const
{
  if (p == lengthPropertyName || p == "item")
    return true;
  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
  Value result;

  if (p == lengthPropertyName)
    result = Number(list.length());
  else if (p == "item") {
    // No need for a complete hashtable for a single func, but we still want
    // to use the caching feature of lookupOrCreateFunction.
    result = lookupOrCreateFunction<DOMNodeListFunc>(exec, p, this, DOMNodeListFunc::Item, 1, DontDelete|Function);
    //result = new DOMNodeListFunc(exec, DOMNodeListFunc::Item, 1);
  }
  else {
    // array index ?
    bool ok;
    long unsigned int idx = p.toULong(&ok);
    if (ok)
      result = getDOMNode(exec,list.item(idx));
    else {
      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;
#ifdef KHTML_NO_EXCEPTIONS
  DOM::_exceptioncode = 0;
  val = tryCall(exec, thisObj, args);
  if (DOM::_exceptioncode) {
    Object err = Error::create(exec, GeneralError, "Exception from DOMNodeList");