static bool shouldConvertTouchToMouse(Element* element)
{
if (!element)
return false;
if ((element->hasTagName(HTMLNames::objectTag) || element->hasTagName(HTMLNames::embedTag)) && static_cast<HTMLPlugInElement*>(element))
return true;
// Input Range element is a special case that requires natural mouse events
// in order to allow dragging of the slider handle.
// Input Range element might appear in the webpage, or it might appear in the shadow tree,
// like the timeline and volume media controls all use Input Range.
// won't operate on the shadow node of other element type, because the webpages
// aren't able to attach listeners to shadow content.
do {
element = toElement(element->shadowAncestorNode()); // If an element is not in shadow tree, shadowAncestorNode returns itself.
if (isRangeControlElement(element))
return true;
} while (element->isInShadowTree());
// Check if the element has a mouse listener and no touch listener. If so,
// the field will require touch events be converted to mouse events to function properly.
return hasMouseMoveListener(element) && !hasTouchListener(element);
}
static bool elementExpectsMouseEvents(Element* element)
{
// Make sure we are not operating a shadow node here, since the webpages
// aren't able to attach event listeners to shadow content.
ASSERT(element);
while (element->isInShadowTree())
element = toElement(element->shadowAncestorNode());
return hasMouseMoveListener(element) && !hasTouchListener(element);
}