void
nsReferencedElement::ResetWithID(nsIContent* aFromContent, const nsString& aID,
bool aWatch)
{
nsIDocument *doc = aFromContent->GetCurrentDoc();
if (!doc)
return;
// XXX Need to take care of XBL/XBL2
if (aWatch) {
nsCOMPtr<nsIAtom> atom = do_GetAtom(aID);
if (!atom)
return;
atom.swap(mWatchID);
}
mReferencingImage = false;
HaveNewDocument(doc, aWatch, aID);
}
void
nsReferencedElement::Reset(nsIContent* aFromContent, nsIURI* aURI,
bool aWatch, bool aReferenceImage)
{
NS_ABORT_IF_FALSE(aFromContent, "Reset() expects non-null content pointer");
Unlink();
if (!aURI)
return;
nsCAutoString refPart;
aURI->GetRef(refPart);
// Unescape %-escapes in the reference. The result will be in the
// origin charset of the URL, hopefully...
NS_UnescapeURL(refPart);
nsCAutoString charset;
aURI->GetOriginCharset(charset);
nsAutoString ref;
nsresult rv = nsContentUtils::ConvertStringFromCharset(charset, refPart, ref);
if (NS_FAILED(rv)) {
CopyUTF8toUTF16(refPart, ref);
}
if (ref.IsEmpty())
return;
// Get the current document
nsIDocument *doc = aFromContent->GetCurrentDoc();
if (!doc)
return;
nsIContent* bindingParent = aFromContent->GetBindingParent();
if (bindingParent) {
nsXBLBinding* binding = doc->BindingManager()->GetBinding(bindingParent);
if (binding) {
bool isEqualExceptRef;
rv = aURI->EqualsExceptRef(binding->PrototypeBinding()->DocURI(),
&isEqualExceptRef);
if (NS_SUCCEEDED(rv) && isEqualExceptRef) {
// XXX sXBL/XBL2 issue
// Our content is an anonymous XBL element from a binding inside the
// same document that the referenced URI points to. In order to avoid
// the risk of ID collisions we restrict ourselves to anonymous
// elements from this binding; specifically, URIs that are relative to
// the binding document should resolve to the copy of the target
// element that has been inserted into the bound document.
// If the URI points to a different document we don't need this
// restriction.
nsINodeList* anonymousChildren =
doc->BindingManager()->GetAnonymousNodesFor(bindingParent);
if (anonymousChildren) {
PRUint32 length;
anonymousChildren->GetLength(&length);
for (PRUint32 i = 0; i < length && !mElement; ++i) {
mElement =
nsContentUtils::MatchElementId(anonymousChildren->GetNodeAt(i), ref);
}
}
// We don't have watching working yet for XBL, so bail out here.
return;
}
}
}
bool isEqualExceptRef;
rv = aURI->EqualsExceptRef(doc->GetDocumentURI(), &isEqualExceptRef);
if (NS_FAILED(rv) || !isEqualExceptRef) {
nsRefPtr<nsIDocument::ExternalResourceLoad> load;
doc = doc->RequestExternalResource(aURI, aFromContent,
getter_AddRefs(load));
if (!doc) {
if (!load || !aWatch) {
// Nothing will ever happen here
return;
}
DocumentLoadNotification* observer =
new DocumentLoadNotification(this, ref);
mPendingNotification = observer;
if (observer) {
load->AddObserver(observer);
}
// Keep going so we set up our watching stuff a bit
}
}
if (aWatch) {
nsCOMPtr<nsIAtom> atom = do_GetAtom(ref);
if (!atom)
return;
atom.swap(mWatchID);
}
mReferencingImage = aReferenceImage;
HaveNewDocument(doc, aWatch, ref);
}
void
nsReferencedElement::Reset(nsIContent* aFromContent, nsIURI* aURI, PRBool aWatch)
{
Unlink();
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
if (!url)
return;
nsCAutoString refPart;
url->GetRef(refPart);
// Unescape %-escapes in the reference. The result will be in the
// origin charset of the URL, hopefully...
NS_UnescapeURL(refPart);
nsCAutoString charset;
url->GetOriginCharset(charset);
nsAutoString ref;
nsresult rv = nsContentUtils::ConvertStringFromCharset(charset, refPart, ref);
if (NS_FAILED(rv)) {
CopyUTF8toUTF16(refPart, ref);
}
if (ref.IsEmpty())
return;
// Get the current document
nsIDocument *doc = aFromContent->GetCurrentDoc();
if (!doc)
return;
// This will be the URI of the document the content belongs to
// (the URI of the XBL document if the content is anonymous
// XBL content)
nsCOMPtr<nsIURL> documentURL = do_QueryInterface(doc->GetDocumentURI());
nsIContent* bindingParent = aFromContent->GetBindingParent();
PRBool isXBL = PR_FALSE;
if (bindingParent) {
nsXBLBinding* binding = doc->BindingManager()->GetBinding(bindingParent);
if (binding) {
// XXX sXBL/XBL2 issue
// If this is an anonymous XBL element then the URI is
// relative to the binding document. A full fix requires a
// proper XBL2 implementation but for now URIs that are
// relative to the binding document should be resolve to the
// copy of the target element that has been inserted into the
// bound document.
documentURL = do_QueryInterface(binding->PrototypeBinding()->DocURI());
isXBL = PR_TRUE;
}
}
if (!documentURL)
return;
if (!EqualExceptRef(url, documentURL)) {
// Don't take the XBL codepath here, since we'll want to just
// normally set up our external resource document and then watch
// it as needed.
isXBL = PR_FALSE;
nsRefPtr<nsIDocument::ExternalResourceLoad> load;
doc = doc->RequestExternalResource(url, aFromContent, getter_AddRefs(load));
if (!doc) {
if (!load || !aWatch) {
// Nothing will ever happen here
return;
}
DocumentLoadNotification* observer =
new DocumentLoadNotification(this, ref);
mPendingNotification = observer;
if (observer) {
load->AddObserver(observer);
}
// Keep going so we set up our watching stuff a bit
}
}
// Get the element
if (isXBL) {
nsCOMPtr<nsIDOMNodeList> anonymousChildren;
doc->BindingManager()->
GetAnonymousNodesFor(bindingParent, getter_AddRefs(anonymousChildren));
if (anonymousChildren) {
PRUint32 length;
anonymousChildren->GetLength(&length);
for (PRUint32 i = 0; i < length && !mContent; ++i) {
nsCOMPtr<nsIDOMNode> node;
anonymousChildren->Item(i, getter_AddRefs(node));
nsCOMPtr<nsIContent> c = do_QueryInterface(node);
if (c) {
mContent = nsContentUtils::MatchElementId(c, ref);
}
}
}
// We don't have watching working yet for XBL, so bail out here.
return;
}
if (aWatch) {
nsCOMPtr<nsIAtom> atom = do_GetAtom(ref);
if (!atom)
return;
atom.swap(mWatchID);
}
HaveNewDocument(doc, aWatch, ref);
}
