void SliderContainerElement::handleTouchEvent(TouchEvent* event) {
HTMLInputElement* input = hostInput();
if (input->isDisabledOrReadOnly())
return;
if (event->type() == EventTypeNames::touchend) {
input->dispatchFormControlChangeEvent();
event->setDefaultHandled();
m_slidingDirection = NoMove;
m_touchStarted = false;
return;
}
// The direction of this series of touch actions has been determined, which is
// perpendicular to the slider, so no need to adjust the value.
if (!canSlide()) {
return;
}
TouchList* touches = event->targetTouches();
SliderThumbElement* thumb = toSliderThumbElement(
treeScope().getElementById(ShadowElementNames::sliderThumb()));
if (touches->length() == 1) {
if (event->type() == EventTypeNames::touchstart) {
m_startPoint = touches->item(0)->absoluteLocation();
m_slidingDirection = NoMove;
m_touchStarted = true;
thumb->setPositionFromPoint(touches->item(0)->absoluteLocation());
} else if (m_touchStarted) {
LayoutPoint currentPoint = touches->item(0)->absoluteLocation();
if (m_slidingDirection ==
NoMove) { // Still needs to update the direction.
m_slidingDirection = getDirection(currentPoint, m_startPoint);
}
// m_slidingDirection has been updated, so check whether it's okay to
// slide again.
if (canSlide()) {
thumb->setPositionFromPoint(touches->item(0)->absoluteLocation());
event->setDefaultHandled();
}
}
}
}
void RangeInputType::handleTouchEvent(TouchEvent* event)
{
if (element()->isDisabledOrReadOnly())
return;
if (event->type() == eventNames().touchendEvent) {
event->setDefaultHandled();
return;
}
TouchList* touches = event->targetTouches();
if (touches->length() == 1) {
Touch* touch = touches->item(0);
SliderThumbElement* thumb = sliderThumbElementOf(element());
thumb->setPositionFromPoint(touch->absoluteLocation());
event->setDefaultHandled();
}
}
