void HTMLSliderThumbElement::defaultEventHandler(Event* event)
{
const AtomicString& eventType = event->type();
if (eventType == eventNames().mousedownEvent && event->isMouseEvent() && static_cast<MouseEvent*>(event)->button() == LeftButton) {
MouseEvent* mouseEvent = static_cast<MouseEvent*>(event);
if (document()->frame() && renderer() && renderer()->parent()
&& static_cast<RenderSlider*>(renderer()->parent())->mouseEventIsInThumb(mouseEvent)) {
// Cache the initial point where the mouse down occurred.
m_initialClickPoint = IntPoint(mouseEvent->pageX(), mouseEvent->pageY());
// Cache the initial position of the thumb.
m_initialPosition = static_cast<RenderSlider*>(renderer()->parent())->currentPosition();
m_inDragMode = true;
document()->frame()->eventHandler()->setCapturingMouseEventsNode(m_shadowParent);
event->setDefaultHandled();
return;
}
} else if (eventType == eventNames().mouseupEvent && event->isMouseEvent() && static_cast<MouseEvent*>(event)->button() == LeftButton) {
if (m_inDragMode) {
if (Frame* frame = document()->frame())
frame->eventHandler()->setCapturingMouseEventsNode(0);
m_inDragMode = false;
event->setDefaultHandled();
return;
}
} else if (eventType == eventNames().mousemoveEvent && event->isMouseEvent()) {
if (m_inDragMode && renderer() && renderer()->parent()) {
// Move the slider
MouseEvent* mouseEvent = static_cast<MouseEvent*>(event);
RenderSlider* slider = static_cast<RenderSlider*>(renderer()->parent());
int newPosition = slider->positionForOffset(
IntPoint(m_initialPosition + mouseEvent->pageX() - m_initialClickPoint.x()
+ (renderer()->width() / 2),
m_initialPosition + mouseEvent->pageY() - m_initialClickPoint.y()
+ (renderer()->height() / 2)));
if (slider->currentPosition() != newPosition) {
slider->setCurrentPosition(newPosition);
slider->valueChanged();
}
event->setDefaultHandled();
return;
}
}
HTMLDivElement::defaultEventHandler(event);
}
