void HTMLLinkElement::UnbindFromTree(bool aDeep, bool aNullParent) {
// Cancel any DNS prefetches
// Note: Must come before ResetLinkState. If called after, it will recreate
// mCachedURI based on data that is invalid - due to a call to GetHostname.
CancelDNSPrefetch(HTML_LINK_DNS_PREFETCH_DEFERRED,
HTML_LINK_DNS_PREFETCH_REQUESTED);
CancelPrefetchOrPreload();
// Without removing the link state we risk a dangling pointer
// in the mStyledLinks hashtable
Link::ResetLinkState(false, Link::ElementHasHref());
// If this is reinserted back into the document it will not be
// from the parser.
Document* oldDoc = GetUncomposedDoc();
ShadowRoot* oldShadowRoot = GetContainingShadow();
// We want to update the localization but only if the
// link is removed from a DOM change, and not
// because the document is going away.
bool ignore;
if (oldDoc && oldDoc->GetScriptHandlingObject(ignore) &&
this->AttrValueIs(kNameSpaceID_None, nsGkAtoms::rel,
nsGkAtoms::localization, eIgnoreCase)) {
oldDoc->LocalizationLinkRemoved(this);
}
CreateAndDispatchEvent(oldDoc, NS_LITERAL_STRING("DOMLinkRemoved"));
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
Unused << UpdateStyleSheetInternal(oldDoc, oldShadowRoot);
}
void
HTMLLinkElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
// Cancel any DNS prefetches
// Note: Must come before ResetLinkState. If called after, it will recreate
// mCachedURI based on data that is invalid - due to a call to GetHostname.
CancelDNSPrefetch(HTML_LINK_DNS_PREFETCH_DEFERRED,
HTML_LINK_DNS_PREFETCH_REQUESTED);
// If this link is ever reinserted into a document, it might
// be under a different xml:base, so forget the cached state now.
Link::ResetLinkState(false, Link::ElementHasHref());
// If this is reinserted back into the document it will not be
// from the parser.
nsCOMPtr<nsIDocument> oldDoc = GetUncomposedDoc();
// Check for a ShadowRoot because link elements are inert in a
// ShadowRoot.
ShadowRoot* oldShadowRoot = GetBindingParent() ?
GetBindingParent()->GetShadowRoot() : nullptr;
OwnerDoc()->UnregisterPendingLinkUpdate(this);
CreateAndDispatchEvent(oldDoc, NS_LITERAL_STRING("DOMLinkRemoved"));
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
UpdateStyleSheetInternal(oldDoc, oldShadowRoot);
UpdateImport();
}
nsresult HTMLLinkElement::BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName,
const nsAttrValueOrString* aValue,
bool aNotify) {
if (aNameSpaceID == kNameSpaceID_None &&
(aName == nsGkAtoms::href || aName == nsGkAtoms::rel)) {
CancelDNSPrefetch(HTML_LINK_DNS_PREFETCH_DEFERRED,
HTML_LINK_DNS_PREFETCH_REQUESTED);
CancelPrefetchOrPreload();
}
return nsGenericHTMLElement::BeforeSetAttr(aNameSpaceID, aName, aValue,
aNotify);
}
nsresult
HTMLAnchorElement::BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValueOrString* aValue,
bool aNotify)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aName == nsGkAtoms::href) {
CancelDNSPrefetch(HTML_ANCHOR_DNS_PREFETCH_DEFERRED,
HTML_ANCHOR_DNS_PREFETCH_REQUESTED);
}
}
return nsGenericHTMLElement::BeforeSetAttr(aNamespaceID, aName, aValue,
aNotify);
}
void
HTMLAnchorElement::UnbindFromTree(bool aDeep, bool aNullParent)
{
// Cancel any DNS prefetches
// Note: Must come before ResetLinkState. If called after, it will recreate
// mCachedURI based on data that is invalid - due to a call to GetHostname.
CancelDNSPrefetch(HTML_ANCHOR_DNS_PREFETCH_DEFERRED,
HTML_ANCHOR_DNS_PREFETCH_REQUESTED);
// If this link is ever reinserted into a document, it might
// be under a different xml:base, so forget the cached state now.
Link::ResetLinkState(false, Link::ElementHasHref());
nsGenericHTMLElement::UnbindFromTree(aDeep, aNullParent);
}
