void HTMLLinkElement::setDisabledState(bool disabled)
{
DisabledState oldDisabledState = m_disabledState;
m_disabledState = disabled ? Disabled : EnabledViaScript;
if (oldDisabledState != m_disabledState) {
// If we change the disabled state while the sheet is still loading, then we have to
// perform three checks:
if (styleSheetIsLoading()) {
// Check #1: The sheet becomes disabled while loading.
if (m_disabledState == Disabled)
removePendingSheet();
// Check #2: An alternate sheet becomes enabled while it is still loading.
if (m_relAttribute.m_isAlternate && m_disabledState == EnabledViaScript)
addPendingSheet(Blocking);
// Check #3: A main sheet becomes enabled while it was still loading and
// after it was disabled via script. It takes really terrible code to make this
// happen (a double toggle for no reason essentially). This happens on
// virtualplastic.net, which manages to do about 12 enable/disables on only 3
// sheets. :)
if (!m_relAttribute.m_isAlternate && m_disabledState == EnabledViaScript && oldDisabledState == Disabled)
addPendingSheet(Blocking);
// If the sheet is already loading just bail.
return;
}
// Load the sheet, since it's never been loaded before.
if (!m_sheet && m_disabledState == EnabledViaScript)
process();
else
document()->styleSelectorChanged(DeferRecalcStyle); // Update the style selector.
}
}
void HTMLLinkElement::removedFromDocument()
{
HTMLElement::removedFromDocument();
if (m_isInShadowTree) {
ASSERT(!m_sheet);
return;
}
document()->removeStyleSheetCandidateNode(this);
if (m_sheet)
clearSheet();
if (styleSheetIsLoading())
removePendingSheet();
if (document()->renderer())
document()->styleSelectorChanged(DeferRecalcStyle);
}
