bool
SVGAElement::IsLink(nsIURI** aURI) const
{
// To be a clickable XLink for styling and interaction purposes, we require:
//
// xlink:href - must be set
// xlink:type - must be unset or set to "" or set to "simple"
// xlink:show - must be unset or set to "", "new" or "replace"
// xlink:actuate - must be unset or set to "" or "onRequest"
//
// For any other values, we're either not a *clickable* XLink, or the end
// result is poorly specified. Either way, we return false.
static nsIContent::AttrValuesArray sTypeVals[] =
{ &nsGkAtoms::_empty, &nsGkAtoms::simple, nullptr };
static nsIContent::AttrValuesArray sShowVals[] =
{ &nsGkAtoms::_empty, &nsGkAtoms::_new, &nsGkAtoms::replace, nullptr };
static nsIContent::AttrValuesArray sActuateVals[] =
{ &nsGkAtoms::_empty, &nsGkAtoms::onRequest, nullptr };
// Optimization: check for href first for early return
bool useXLink = !HasAttr(kNameSpaceID_None, nsGkAtoms::href);
const nsAttrValue* href =
useXLink
? mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_XLink)
: mAttrsAndChildren.GetAttr(nsGkAtoms::href, kNameSpaceID_None);
if (href &&
FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::type,
sTypeVals, eCaseMatters) !=
nsIContent::ATTR_VALUE_NO_MATCH &&
FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show,
sShowVals, eCaseMatters) !=
nsIContent::ATTR_VALUE_NO_MATCH &&
FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::actuate,
sActuateVals, eCaseMatters) !=
nsIContent::ATTR_VALUE_NO_MATCH) {
nsCOMPtr<nsIURI> baseURI = GetBaseURI();
// Get absolute URI
nsAutoString str;
const uint8_t idx = useXLink ? XLINK_HREF : HREF;
mStringAttributes[idx].GetAnimValue(str, this);
nsContentUtils::NewURIWithDocumentCharset(aURI, str, OwnerDoc(), baseURI);
// must promise out param is non-null if we return true
return !!*aURI;
}
*aURI = nullptr;
return false;
}
void
HTMLLinkElement::CreateAndDispatchEvent(nsIDocument* aDoc,
const nsAString& aEventName)
{
if (!aDoc)
return;
// In the unlikely case that both rev is specified *and* rel=stylesheet,
// this code will cause the event to fire, on the principle that maybe the
// page really does want to specify that its author is a stylesheet. Since
// this should never actually happen and the performance hit is minimal,
// doing the "right" thing costs virtually nothing here, even if it doesn't
// make much sense.
static nsIContent::AttrValuesArray strings[] =
{&nsGkAtoms::_empty, &nsGkAtoms::stylesheet, nullptr};
if (!nsContentUtils::HasNonEmptyAttr(this, kNameSpaceID_None,
nsGkAtoms::rev) &&
FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::rel,
strings, eIgnoreCase) != ATTR_VALUE_NO_MATCH)
return;
nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
new AsyncEventDispatcher(this, aEventName, true, true);
// Always run async in order to avoid running script when the content
// sink isn't expecting it.
asyncDispatcher->PostDOMEvent();
}
PRBool
nsXMLElement::IsLink(nsIURI** aURI) const
{
NS_PRECONDITION(aURI, "Must provide aURI out param");
// To be an XLink for styling and interaction purposes, we require:
//
// xlink:href - must be set
// xlink:type - must be set to "simple"
// xlink:_moz_target - must be set, OR
// xlink:show - must be unset or set to "", "new" or "replace"
// xlink:actuate - must be unset or set to "" or "onRequest"
//
// For any other values, we're either not a *clickable* XLink, or the end
// result is poorly specified. Either way, we return PR_FALSE.
static nsIContent::AttrValuesArray sShowVals[] =
{ &nsGkAtoms::_empty, &nsGkAtoms::_new, &nsGkAtoms::replace, nsnull };
static nsIContent::AttrValuesArray sActuateVals[] =
{ &nsGkAtoms::_empty, &nsGkAtoms::onRequest, nsnull };
// Optimization: check for href first for early return
const nsAttrValue* href = mAttrsAndChildren.GetAttr(nsGkAtoms::href,
kNameSpaceID_XLink);
if (href &&
AttrValueIs(kNameSpaceID_XLink, nsGkAtoms::type,
nsGkAtoms::simple, eCaseMatters) &&
(HasAttr(kNameSpaceID_XLink, nsGkAtoms::_moz_target) ||
FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show,
sShowVals, eCaseMatters) !=
nsIContent::ATTR_VALUE_NO_MATCH) &&
FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::actuate,
sActuateVals, eCaseMatters) !=
nsIContent::ATTR_VALUE_NO_MATCH) {
// Get absolute URI
nsCOMPtr<nsIURI> baseURI = GetBaseURI();
nsContentUtils::NewURIWithDocumentCharset(aURI, href->GetStringValue(),
GetOwnerDoc(), baseURI);
return !!*aURI; // must promise out param is non-null if we return true
}
*aURI = nsnull;
return PR_FALSE;
}
void
SVGAElement::GetLinkTarget(nsAString& aTarget)
{
mStringAttributes[TARGET].GetAnimValue(aTarget, this);
if (aTarget.IsEmpty()) {
static Element::AttrValuesArray sShowVals[] =
{ &nsGkAtoms::_new, &nsGkAtoms::replace, nullptr };
switch (FindAttrValueIn(kNameSpaceID_XLink, nsGkAtoms::show,
sShowVals, eCaseMatters)) {
case 0:
aTarget.AssignLiteral("_blank");
return;
case 1:
return;
}
nsIDocument* ownerDoc = OwnerDoc();
if (ownerDoc) {
ownerDoc->GetBaseTarget(aTarget);
}
}
}
