SliderThumbElement* sliderThumbElementOf(Node* node)
{
ASSERT(node);
ShadowRoot* shadow = node->toInputElement()->shadowTree()->oldestShadowRoot();
ASSERT(shadow);
Node* thumb = shadow->firstChild()->firstChild()->firstChild();
ASSERT(thumb);
return toSliderThumbElement(thumb);
}
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();
}
}
}
}
inline SliderThumbElement* RangeInputType::sliderThumbElement() const
{
return toSliderThumbElement(element().userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb()));
}
SliderThumbElement* RenderSlider::shadowSliderThumb() const
{
Node* shadow = static_cast<Element*>(node())->shadowRoot();
return shadow ? toSliderThumbElement(shadow->firstChild()) : 0;
}
SliderThumbElement* RenderSlider::sliderThumbElement() const
{
return toSliderThumbElement(static_cast<Element*>(node())->shadowRoot());
}
inline SliderThumbElement* RenderSlider::sliderThumbElement() const
{
return toSliderThumbElement(toElement(node())->userAgentShadowRoot()->getElementById(ShadowElementNames::sliderThumb()));
}
