m_relatedTarget = relatedTargetArg;
    if (m_relatedTarget)
	m_relatedTarget->ref();
    m_clipboard = clipboardArg;
    if (m_clipboard)
	m_clipboard->ref();
    computeLayerPos();
}

void MouseEventImpl::computeLayerPos()
{
    m_layerX = m_clientX;
    m_layerY = m_clientY;

    DocumentImpl *doc = view()->document();

    if (!doc || !doc->renderer()) {
	return;
    }

    khtml::RenderObject::NodeInfo renderInfo(true, false);
    doc->renderer()->layer()->hitTest(renderInfo, m_clientX, m_clientY);

    NodeImpl *node = renderInfo.innerNonSharedNode();
    while (node && !node->renderer()) {
	node = node->parent();
    }

    if (!node) {
	return;
    }

    node->renderer()->enclosingLayer()->updateLayerPosition();
    
    for (khtml::RenderLayer *layer = node->renderer()->enclosingLayer(); layer != NULL; layer = layer->parent()) {
	m_layerX -= layer->xPos();
	m_layerY -= layer->yPos();
    }
}

MouseEventImpl::~MouseEventImpl()
{
    if (m_relatedTarget)
	m_relatedTarget->deref();
    if (m_clipboard)
	m_clipboard->deref();
}

void MouseEventImpl::initMouseEvent(const DOMString &typeArg,
                                    bool canBubbleArg,
                                    bool cancelableArg,
                                    const AbstractView &viewArg,
                                    long detailArg,
                                    long screenXArg,
                                    long screenYArg,
                                    long clientXArg,
                                    long clientYArg,
                                    bool ctrlKeyArg,
                                    bool altKeyArg,
                                    bool shiftKeyArg,
                                    bool metaKeyArg,
                                    unsigned short buttonArg,
                                    const Node &relatedTargetArg)
{
    UIEventImpl::initUIEvent(typeArg,canBubbleArg,cancelableArg,viewArg,detailArg);

    if (m_relatedTarget)
	m_relatedTarget->deref();

    m_screenX = screenXArg;
    m_screenY = screenYArg;
    m_clientX = clientXArg;
    m_clientY = clientYArg;
    m_ctrlKey = ctrlKeyArg;
    m_altKey = altKeyArg;
    m_shiftKey = shiftKeyArg;
    m_metaKey = metaKeyArg;
    m_button = buttonArg;
    m_relatedTarget = relatedTargetArg.handle();
    if (m_relatedTarget)
	m_relatedTarget->ref();
    computeLayerPos();
}

bool MouseEventImpl::isMouseEvent() const
{
    return true;
}

bool MouseEventImpl::isDragEvent() const
{
    return (m_id == EventImpl::DRAGENTER_EVENT || m_id == EventImpl::DRAGOVER_EVENT
            || m_id == EventImpl::DRAGLEAVE_EVENT || m_id == EventImpl::DROP_EVENT 
            || m_id == EventImpl::DRAGSTART_EVENT || m_id == EventImpl::DRAG_EVENT
            || m_id == EventImpl::DRAGEND_EVENT);
}

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

KeyboardEventImpl::KeyboardEventImpl()
{
  m_keyEvent = 0;
  m_keyIdentifier = 0;
  m_keyLocation = KeyboardEvent::DOM_KEY_LOCATION_STANDARD;
  m_ctrlKey = false;
  m_shiftKey = false;
  m_altKey = false;
  m_metaKey = false;
  m_altGraphKey = false;
}

KeyboardEventImpl::KeyboardEventImpl(QKeyEvent *key, AbstractViewImpl *view)
  : UIEventImpl(key->type() == QEvent::KeyRelease ? KEYUP_EVENT : key->isAutoRepeat() ? KEYPRESS_EVENT : KEYDOWN_EVENT,
                true,true,view,0)
{
#if APPLE_CHANGES
    m_keyEvent = new QKeyEvent(*key);
#else
    m_keyEvent = new QKeyEvent(key->type(), key->key(), key->ascii(), key->state(), key->text(), key->isAutoRepeat(), key->count());
#endif

#if APPLE_CHANGES
    DOMString identifier(key->keyIdentifier());
    m_keyIdentifier = identifier.implementation();
    m_keyIdentifier->ref();
#else
    m_keyIdentifier = 0;
    // need the equivalent of the above for KDE
#endif

    int keyState = key->state();

    m_ctrlKey = keyState & Qt::ControlButton;
    m_shiftKey = keyState & Qt::ShiftButton;
    m_altKey = keyState & Qt::AltButton;
    m_metaKey = keyState & Qt::MetaButton;
    m_altGraphKey = false; // altGraphKey is not supported by Qt.
    
    // Note: we only support testing for num pad
    m_keyLocation = (keyState & Qt::Keypad) ? KeyboardEvent::DOM_KEY_LOCATION_NUMPAD : KeyboardEvent::DOM_KEY_LOCATION_STANDARD;
}

KeyboardEventImpl::KeyboardEventImpl(EventId _id,
                                        bool canBubbleArg,
                                        bool cancelableArg,
                                        AbstractViewImpl *viewArg, 
                                        const DOMString &keyIdentifierArg, 
                                        unsigned long keyLocationArg, 
                                        bool ctrlKeyArg, 
                                        bool shiftKeyArg, 
                                        bool altKeyArg, 
                                        bool metaKeyArg, 
                                        bool altGraphKeyArg)
  : UIEventImpl(_id,canBubbleArg,cancelableArg,viewArg,0)
{
    m_keyEvent = 0;
    m_keyIdentifier = keyIdentifierArg.implementation();
    if (m_keyIdentifier)
        m_keyIdentifier->ref();
    m_keyLocation = keyLocationArg;
    m_ctrlKey = ctrlKeyArg;
    m_shiftKey = shiftKeyArg;
    m_altKey = altKeyArg;
    m_metaKey = metaKeyArg;
    m_altGraphKey = altGraphKeyArg;
}

KeyboardEventImpl::~KeyboardEventImpl()
{
    delete m_keyEvent;
    if (m_keyIdentifier)
        m_keyIdentifier->deref();
}

void KeyboardEventImpl::initKeyboardEvent(const DOMString &typeArg,
                        bool canBubbleArg,
                        bool cancelableArg,
                        const AbstractView &viewArg, 
                        const DOMString &keyIdentifierArg, 
                        unsigned long keyLocationArg, 
                        bool ctrlKeyArg, 
                        bool shiftKeyArg, 
                        bool altKeyArg, 
                        bool metaKeyArg, 
                        bool altGraphKeyArg)
{
    if (m_keyIdentifier)
        m_keyIdentifier->deref();

    UIEventImpl::initUIEvent(typeArg, canBubbleArg, cancelableArg, viewArg, 0);
    m_keyIdentifier = keyIdentifierArg.implementation();
    if (m_keyIdentifier)
        m_keyIdentifier->ref();
    m_keyLocation = keyLocationArg;
    m_ctrlKey = ctrlKeyArg;
    m_shiftKey = shiftKeyArg;
    m_altKey = altKeyArg;
    m_metaKey = metaKeyArg;
    m_altGraphKey = altGraphKeyArg;
}

int KeyboardEventImpl::keyCode() const
{
    if (!m_keyEvent) {
        return 0;
    }
    switch (m_id) {
        case KEYDOWN_EVENT:
        case KEYUP_EVENT:
#if APPLE_CHANGES
            return m_keyEvent->WindowsKeyCode();
#else
            // need the equivalent of the above for KDE
#endif
        default:
            return charCode();
    }
}

int KeyboardEventImpl::charCode() const
{
    if (!m_keyEvent) {
        return 0;
    }
    QString text = m_keyEvent->text();
    if (text.length() != 1) {
        return 0;
    }
    return text[0].unicode();
}

bool KeyboardEventImpl::isKeyboardEvent() const
{
    return true;
}

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

MutationEventImpl::MutationEventImpl()
{
    m_relatedNode = 0;
    m_prevValue = 0;
    m_newValue = 0;
    m_attrName = 0;
    m_attrChange = 0;
}

MutationEventImpl::MutationEventImpl(EventId _id,
				     bool canBubbleArg,
				     bool cancelableArg,
				     const Node &relatedNodeArg,
				     const DOMString &prevValueArg,
				     const DOMString &newValueArg,
				     const DOMString &attrNameArg,
				     unsigned short attrChangeArg)
		      : EventImpl(_id,canBubbleArg,cancelableArg)
{
    m_relatedNode = relatedNodeArg.handle();
    if (m_relatedNode)
	m_relatedNode->ref();
    m_prevValue = prevValueArg.implementation();
    if (m_prevValue)
	m_prevValue->ref();
    m_newValue = newValueArg.implementation();
    if (m_newValue)
	m_newValue->ref();
    m_attrName = attrNameArg.implementation();
    if (m_newValue)
	m_newValue->ref();
    m_attrChange = attrChangeArg;
}

MutationEventImpl::~MutationEventImpl()
{
    if (m_relatedNode)
	m_relatedNode->deref();
    if (m_prevValue)
	m_prevValue->deref();
    if (m_newValue)
	m_newValue->deref();
    if (m_attrName)
	m_attrName->deref();
}

void MutationEventImpl::initMutationEvent(const DOMString &typeArg,
					  bool canBubbleArg,
					  bool cancelableArg,
					  const Node &relatedNodeArg,
					  const DOMString &prevValueArg,
					  const DOMString &newValueArg,
					  const DOMString &attrNameArg,
					  unsigned short attrChangeArg)
{
    EventImpl::initEvent(typeArg,canBubbleArg,cancelableArg);

    if (m_relatedNode)
	m_relatedNode->deref();
    if (m_prevValue)
	m_prevValue->deref();
    if (m_newValue)
	m_newValue->deref();
    if (m_attrName)
	m_attrName->deref();

    m_relatedNode = relatedNodeArg.handle();
    if (m_relatedNode)
	m_relatedNode->ref();
    m_prevValue = prevValueArg.implementation();
    if (m_prevValue)
	m_prevValue->ref();
    m_newValue = newValueArg.implementation();
    if (m_newValue)
	m_newValue->ref();
    m_attrName = attrNameArg.implementation();
    if (m_newValue)
	m_newValue->ref();
    m_attrChange = attrChangeArg;
}

bool MutationEventImpl::isMutationEvent() const
{
    return true;
}

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

ClipboardEventImpl::ClipboardEventImpl()
{
    m_clipboard = 0;
}

ClipboardEventImpl::ClipboardEventImpl(EventId _id, bool canBubbleArg, bool cancelableArg, ClipboardImpl *clipboardArg)
  : EventImpl(_id, canBubbleArg, cancelableArg), m_clipboard(clipboardArg)
{
      if (m_clipboard)
          m_clipboard->ref();
}

ClipboardEventImpl::~ClipboardEventImpl()
{
    if (m_clipboard)
        m_clipboard->deref();
}

bool ClipboardEventImpl::isClipboardEvent() const
{
    return true;
}

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

RegisteredEventListener::RegisteredEventListener(EventImpl::EventId _id, EventListener *_listener, bool _useCapture)
{
    id = _id;
    listener = _listener;
    useCapture = _useCapture;
    listener->ref();
}

RegisteredEventListener::~RegisteredEventListener() {
    listener->deref();
}

bool RegisteredEventListener::operator==(const RegisteredEventListener &other)
{
    return (id == other.id &&
	    listener == other.listener &&
	    useCapture == other.useCapture);
}

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

ClipboardImpl::ClipboardImpl()
{
}

ClipboardImpl::~ClipboardImpl()
{
}