void SliderThumbElement::defaultEventHandler(Event* event)
{
if (!event->isMouseEvent()) {
HTMLDivElement::defaultEventHandler(event);
return;
}
MouseEvent* mouseEvent = static_cast<MouseEvent*>(event);
bool isLeftButton = mouseEvent->button() == LeftButton;
const AtomicString& eventType = event->type();
if (eventType == eventNames().mousedownEvent && isLeftButton) {
if (document()->frame() && renderer()) {
RenderSlider* slider = toRenderSlider(renderer()->parent());
if (slider) {
if (slider->mouseEventIsInThumb(mouseEvent)) {
// We selected the thumb, we want the cursor to always stay at
// the same position relative to the thumb.
m_offsetToThumb = slider->mouseEventOffsetToThumb(mouseEvent);
} else {
// We are outside the thumb, move the thumb to the point were
// we clicked. We'll be exactly at the center of the thumb.
m_offsetToThumb.setX(0);
m_offsetToThumb.setY(0);
}
m_inDragMode = true;
document()->frame()->eventHandler()->setCapturingMouseEventsNode(m_shadowParent);
event->setDefaultHandled();
return;
}
}
} else if (eventType == eventNames().mouseupEvent && isLeftButton) {
if (m_inDragMode) {
if (Frame* frame = document()->frame())
frame->eventHandler()->setCapturingMouseEventsNode(0);
m_inDragMode = false;
event->setDefaultHandled();
return;
}
} else if (eventType == eventNames().mousemoveEvent) {
if (m_inDragMode && renderer() && renderer()->parent()) {
RenderSlider* slider = toRenderSlider(renderer()->parent());
if (slider) {
FloatPoint curPoint = slider->absoluteToLocal(mouseEvent->absoluteLocation(), false, true);
IntPoint eventOffset(curPoint.x() + m_offsetToThumb.x(), curPoint.y() + m_offsetToThumb.y());
slider->setValueForPosition(slider->positionForOffset(eventOffset));
event->setDefaultHandled();
return;
}
}
}
HTMLDivElement::defaultEventHandler(event);
}
