bool
nsXHTMLContentSerializer::SerializeAttributes(nsIContent* aContent,
nsIContent *aOriginalElement,
nsAString& aTagPrefix,
const nsAString& aTagNamespaceURI,
nsIAtom* aTagName,
nsAString& aStr,
uint32_t aSkipAttr,
bool aAddNSAttr)
{
nsresult rv;
uint32_t index, count;
nsAutoString prefixStr, uriStr, valueStr;
nsAutoString xmlnsStr;
xmlnsStr.AssignLiteral(kXMLNS);
int32_t contentNamespaceID = aContent->GetNameSpaceID();
// this method is not called by nsHTMLContentSerializer
// so we don't have to check HTML element, just XHTML
if (mIsCopying && kNameSpaceID_XHTML == contentNamespaceID) {
// Need to keep track of OL and LI elements in order to get ordinal number
// for the LI.
if (aTagName == nsGkAtoms::ol) {
// We are copying and current node is an OL;
// Store its start attribute value in olState->startVal.
nsAutoString start;
int32_t startAttrVal = 0;
aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::start, start);
if (!start.IsEmpty()) {
nsresult rv = NS_OK;
startAttrVal = start.ToInteger(&rv);
//If OL has "start" attribute, first LI element has to start with that value
//Therefore subtracting 1 as all the LI elements are incrementing it before using it;
//In failure of ToInteger(), default StartAttrValue to 0.
if (NS_SUCCEEDED(rv))
--startAttrVal;
else
startAttrVal = 0;
}
olState state (startAttrVal, true);
mOLStateStack.AppendElement(state);
}
else if (aTagName == nsGkAtoms::li) {
mIsFirstChildOfOL = IsFirstChildOfOL(aOriginalElement);
if (mIsFirstChildOfOL) {
// If OL is parent of this LI, serialize attributes in different manner.
NS_ENSURE_TRUE(SerializeLIValueAttribute(aContent, aStr), false);
}
}
}
// If we had to add a new namespace declaration, serialize
// and push it on the namespace stack
if (aAddNSAttr) {
if (aTagPrefix.IsEmpty()) {
// Serialize default namespace decl
NS_ENSURE_TRUE(SerializeAttr(EmptyString(), xmlnsStr,
aTagNamespaceURI,
aStr, true), false);
} else {
// Serialize namespace decl
NS_ENSURE_TRUE(SerializeAttr(xmlnsStr, aTagPrefix,
aTagNamespaceURI,
aStr, true), false);
}
PushNameSpaceDecl(aTagPrefix, aTagNamespaceURI, aOriginalElement);
}
NS_NAMED_LITERAL_STRING(_mozStr, "_moz");
count = aContent->GetAttrCount();
// Now serialize each of the attributes
// XXX Unfortunately we need a namespace manager to get
// attribute URIs.
for (index = 0; index < count; index++) {
if (aSkipAttr == index) {
continue;
}
mozilla::dom::BorrowedAttrInfo info = aContent->GetAttrInfoAt(index);
const nsAttrName* name = info.mName;
int32_t namespaceID = name->NamespaceID();
nsIAtom* attrName = name->LocalName();
nsIAtom* attrPrefix = name->GetPrefix();
// Filter out any attribute starting with [-|_]moz
nsDependentAtomString attrNameStr(attrName);
if (StringBeginsWith(attrNameStr, NS_LITERAL_STRING("_moz")) ||
StringBeginsWith(attrNameStr, NS_LITERAL_STRING("-moz"))) {
continue;
}
if (attrPrefix) {
attrPrefix->ToString(prefixStr);
}
else {
prefixStr.Truncate();
}
bool addNSAttr = false;
if (kNameSpaceID_XMLNS != namespaceID) {
nsContentUtils::NameSpaceManager()->GetNameSpaceURI(namespaceID, uriStr);
addNSAttr = ConfirmPrefix(prefixStr, uriStr, aOriginalElement, true);
}
info.mValue->ToString(valueStr);
nsDependentAtomString nameStr(attrName);
bool isJS = false;
if (kNameSpaceID_XHTML == contentNamespaceID) {
//
// Filter out special case of <br type="_moz"> or <br _moz*>,
// used by the editor. Bug 16988. Yuck.
//
if (namespaceID == kNameSpaceID_None && aTagName == nsGkAtoms::br && attrName == nsGkAtoms::type
&& StringBeginsWith(valueStr, _mozStr)) {
continue;
}
if (mIsCopying && mIsFirstChildOfOL && (aTagName == nsGkAtoms::li)
&& (attrName == nsGkAtoms::value)) {
// This is handled separately in SerializeLIValueAttribute()
continue;
}
isJS = IsJavaScript(aContent, attrName, namespaceID, valueStr);
if (namespaceID == kNameSpaceID_None &&
((attrName == nsGkAtoms::href) ||
(attrName == nsGkAtoms::src))) {
// Make all links absolute when converting only the selection:
if (mFlags & nsIDocumentEncoder::OutputAbsoluteLinks) {
// Would be nice to handle OBJECT tags,
// but that gets more complicated since we have to
// search the tag list for CODEBASE as well.
// For now, just leave them relative.
nsCOMPtr<nsIURI> uri = aContent->GetBaseURI();
if (uri) {
nsAutoString absURI;
rv = NS_MakeAbsoluteURI(absURI, valueStr, uri);
if (NS_SUCCEEDED(rv)) {
valueStr = absURI;
}
}
}
}
if (mRewriteEncodingDeclaration && aTagName == nsGkAtoms::meta &&
attrName == nsGkAtoms::content) {
// If we're serializing a <meta http-equiv="content-type">,
// use the proper value, rather than what's in the document.
nsAutoString header;
aContent->GetAttr(kNameSpaceID_None, nsGkAtoms::httpEquiv, header);
if (header.LowerCaseEqualsLiteral("content-type")) {
valueStr = NS_LITERAL_STRING("text/html; charset=") +
NS_ConvertASCIItoUTF16(mCharset);
}
}
// Expand shorthand attribute.
if (namespaceID == kNameSpaceID_None && IsShorthandAttr(attrName, aTagName) && valueStr.IsEmpty()) {
valueStr = nameStr;
}
}
else {
isJS = IsJavaScript(aContent, attrName, namespaceID, valueStr);
}
NS_ENSURE_TRUE(SerializeAttr(prefixStr, nameStr, valueStr, aStr, !isJS), false);
if (addNSAttr) {
NS_ASSERTION(!prefixStr.IsEmpty(),
"Namespaced attributes must have a prefix");
NS_ENSURE_TRUE(SerializeAttr(xmlnsStr, prefixStr, uriStr, aStr, true), false);
PushNameSpaceDecl(prefixStr, uriStr, aOriginalElement);
}
}
return true;
}
NS_IMETHODIMP
nsXMLContentSerializer::AppendElementStart(nsIDOMElement *aElement,
nsIDOMElement *aOriginalElement,
nsAString& aStr)
{
NS_ENSURE_ARG(aElement);
nsAutoString tagPrefix, tagLocalName, tagNamespaceURI;
nsAutoString xmlnsStr;
xmlnsStr.AssignLiteral(kXMLNS);
nsCOMPtr<nsIContent> content(do_QueryInterface(aElement));
if (!content) return NS_ERROR_FAILURE;
aElement->GetPrefix(tagPrefix);
aElement->GetLocalName(tagLocalName);
aElement->GetNamespaceURI(tagNamespaceURI);
PRUint32 index, count;
nsAutoString nameStr, prefixStr, uriStr, valueStr;
count = content->GetAttrCount();
// First scan for namespace declarations, pushing each on the stack
PRUint32 skipAttr = count;
for (index = 0; index < count; index++) {
const nsAttrName* name = content->GetAttrNameAt(index);
PRInt32 namespaceID = name->NamespaceID();
nsIAtom *attrName = name->LocalName();
if (namespaceID == kNameSpaceID_XMLNS ||
// Also push on the stack attrs named "xmlns" in the null
// namespace... because once we serialize those out they'll look like
// namespace decls. :(
// XXXbz what if we have both "xmlns" in the null namespace and "xmlns"
// in the xmlns namespace?
(namespaceID == kNameSpaceID_None &&
attrName == nsGkAtoms::xmlns)) {
content->GetAttr(namespaceID, attrName, uriStr);
if (!name->GetPrefix()) {
if (tagNamespaceURI.IsEmpty() && !uriStr.IsEmpty()) {
// If the element is in no namespace we need to add a xmlns
// attribute to declare that. That xmlns attribute must not have a
// prefix (see http://www.w3.org/TR/REC-xml-names/#dt-prefix), ie it
// must declare the default namespace. We just found an xmlns
// attribute that declares the default namespace to something
// non-empty. We're going to ignore this attribute, for children we
// will detect that we need to add it again and attributes aren't
// affected by the default namespace.
skipAttr = index;
}
else {
// Default NS attribute does not have prefix (and the name is "xmlns")
PushNameSpaceDecl(EmptyString(), uriStr, aOriginalElement);
}
}
else {
attrName->ToString(nameStr);
PushNameSpaceDecl(nameStr, uriStr, aOriginalElement);
}
}
}
PRBool addNSAttr;
MaybeAddNewline(aStr);
addNSAttr = ConfirmPrefix(tagPrefix, tagNamespaceURI, aOriginalElement,
PR_FALSE);
// Serialize the qualified name of the element
AppendToString(NS_LITERAL_STRING("<"), aStr);
if (!tagPrefix.IsEmpty()) {
AppendToString(tagPrefix, aStr);
AppendToString(NS_LITERAL_STRING(":"), aStr);
}
AppendToString(tagLocalName, aStr);
// If we had to add a new namespace declaration, serialize
// and push it on the namespace stack
if (addNSAttr) {
if (tagPrefix.IsEmpty()) {
// Serialize default namespace decl
SerializeAttr(EmptyString(), xmlnsStr, tagNamespaceURI, aStr, PR_TRUE);
} else {
// Serialize namespace decl
SerializeAttr(xmlnsStr, tagPrefix, tagNamespaceURI, aStr, PR_TRUE);
}
PushNameSpaceDecl(tagPrefix, tagNamespaceURI, aOriginalElement);
}
// Now serialize each of the attributes
// XXX Unfortunately we need a namespace manager to get
// attribute URIs.
for (index = 0; index < count; index++) {
if (skipAttr == index) {
continue;
}
const nsAttrName* name = content->GetAttrNameAt(index);
PRInt32 namespaceID = name->NamespaceID();
nsIAtom* attrName = name->LocalName();
nsIAtom* attrPrefix = name->GetPrefix();
if (attrPrefix) {
attrPrefix->ToString(prefixStr);
}
else {
prefixStr.Truncate();
}
addNSAttr = PR_FALSE;
if (kNameSpaceID_XMLNS != namespaceID) {
nsContentUtils::NameSpaceManager()->GetNameSpaceURI(namespaceID, uriStr);
addNSAttr = ConfirmPrefix(prefixStr, uriStr, aOriginalElement, PR_TRUE);
}
content->GetAttr(namespaceID, attrName, valueStr);
attrName->ToString(nameStr);
// XXX Hack to get around the fact that MathML can add
// attributes starting with '-', which makes them
// invalid XML.
if (!nameStr.IsEmpty() && nameStr.First() == '-')
continue;
if (namespaceID == kNameSpaceID_None) {
if (content->GetNameSpaceID() == kNameSpaceID_XHTML) {
if (IsShorthandAttr(attrName, content->Tag()) &&
valueStr.IsEmpty()) {
valueStr = nameStr;
}
}
}
SerializeAttr(prefixStr, nameStr, valueStr, aStr, PR_TRUE);
if (addNSAttr) {
NS_ASSERTION(!prefixStr.IsEmpty(),
"Namespaced attributes must have a prefix");
SerializeAttr(xmlnsStr, prefixStr, uriStr, aStr, PR_TRUE);
PushNameSpaceDecl(prefixStr, uriStr, aOriginalElement);
}
}
// We don't output a separate end tag for empty element
PRBool hasChildren;
if (NS_FAILED(aOriginalElement->HasChildNodes(&hasChildren)) ||
!hasChildren) {
AppendToString(NS_LITERAL_STRING("/>"), aStr);
MaybeFlagNewline(aElement);
} else {
AppendToString(NS_LITERAL_STRING(">"), aStr);
}
return NS_OK;
}
