void RadioButtonGroup::remove(HTMLInputElement* button) {
DCHECK_EQ(button->type(), InputTypeNames::radio);
auto it = m_members.find(button);
if (it == m_members.end())
return;
bool wasValid = isValid();
DCHECK_EQ(it->value, button->isRequired());
updateRequiredButton(*it, false);
m_members.remove(it);
if (m_checkedButton == button)
m_checkedButton = nullptr;
if (m_members.isEmpty()) {
DCHECK(!m_requiredCount);
DCHECK(!m_checkedButton);
} else if (wasValid != isValid()) {
setNeedsValidityCheckForAllButtons();
}
if (!wasValid) {
// A radio button not in a group is always valid. We need to make it
// valid only if the group was invalid.
button->setNeedsValidityCheck();
}
// Send notification to update AX attributes for AXObjects which radiobutton
// group has.
if (!m_members.isEmpty()) {
HTMLInputElement* input = m_members.begin()->key;
if (AXObjectCache* cache = input->document().existingAXObjectCache())
cache->radiobuttonRemovedFromGroup(input);
}
}
void RadioButtonGroup::requiredAttributeChanged(HTMLInputElement* button) {
DCHECK_EQ(button->type(), InputTypeNames::radio);
auto it = m_members.find(button);
DCHECK_NE(it, m_members.end());
bool wasValid = isValid();
// Synchronize the 'required' flag for the button, along with
// updating the overall count.
updateRequiredButton(*it, button->isRequired());
if (wasValid != isValid())
setNeedsValidityCheckForAllButtons();
}