bool FatFingers::isElementClickable(Element* element) const
{
ASSERT(element);
ASSERT(m_matchingApproach != Done);
ASSERT(m_targetType == ClickableElement);
switch (m_matchingApproach) {
case ClickableByDefault: {
ExceptionCode ec = 0;
return element->webkitMatchesSelector("a[href],*:link,*:visited,*[role=button],button,input,select,label[for],area[href],textarea,embed,object", ec)
|| element->isMediaControlElement()
|| element->isContentEditable();
}
case MadeClickableByTheWebpage:
// Elements within a shadow DOM can not be 'made clickable by the webpage', since
// they are not accessible.
if (element->isInShadowTree())
return false;
// FIXME: We fall back to checking for the presence of CSS style "cursor: pointer" to indicate whether the element A
// can be clicked when A neither registers mouse events handlers nor is a hyperlink or form control. This workaround
// ensures that we don't break various Google web apps, including <http://maps.google.com>. Ideally, we should walk
// up the DOM hierarchy to determine the first parent element that accepts mouse events.
// Consider the HTML snippet: <div id="A" onclick="..."><div id="B">Example</div></div>
// Notice, B is not a hyperlink, or form control, and does not register any mouse event handler. Then B cannot
// be clicked. Suppose B specified the CSS property "cursor: pointer". Then, B will be considered as clickable.
return hasMousePressListener(element)
|| CSSComputedStyleDeclaration::create(element)->getPropertyValue(cssPropertyID("cursor")) == "pointer";
default:
ASSERT_NOT_REACHED();
}
return false;
}
bool FatFingers::isElementClickable(Element* element) const
{
ASSERT(element);
ASSERT(m_targetType == ClickableElement);
ExceptionCode ec = 0;
if (element->webkitMatchesSelector("a[href],*:link,*:visited,*[role=button],button,input,select,label[for],area[href],textarea,embed,object", ec)
|| element->isMediaControlElement()
|| element->isContentEditable())
return true;
return hasMousePressListener(element)
|| CSSComputedStyleDeclaration::create(element)->getPropertyValue(cssPropertyID("cursor")) == "pointer";
}
