void nsCSSSelector::ToStringInternal(nsAString& aString,
nsICSSStyleSheet* aSheet,
PRBool aIsPseudoElem,
PRBool aIsNegated) const
{
nsAutoString temp;
PRBool isPseudoElement = IsPseudoElement(mTag);
// selectors are linked from right-to-left, so the next selector in the linked list
// actually precedes this one in the resulting string
if (mNext) {
mNext->ToStringInternal(aString, aSheet, IsPseudoElement(mTag), 0);
if (!aIsNegated && !isPseudoElement) {
// don't add a leading whitespace if we have a pseudo-element
// or a negated simple selector
aString.Append(PRUnichar(' '));
}
}
// For non-pseudo-element selectors or for lone pseudo-elements, deal with
// namespace prefixes.
PRBool wroteNamespace = PR_FALSE;
if (!isPseudoElement || !mNext) {
// append the namespace prefix if needed
if (mNameSpace == kNameSpaceID_None) {
// The only way to do this in CSS is to have an explicit namespace
// of "none" specified in the sheet by having a '|' with nothing
// before it.
aString.Append(PRUnichar('|'));
wroteNamespace = PR_TRUE;
} else {
if (aSheet) {
nsXMLNameSpaceMap *sheetNS = aSheet->GetNameSpaceMap();
// sheetNS is non-null if and only if we had an @namespace rule. If it's
// null, that means that the only namespaces we could have are the
// wildcard namespace (which can be implicit in this case) and the "none"
// namespace, which we handled above. So no need to output anything when
// sheetNS is null.
if (sheetNS) {
if (mNameSpace != kNameSpaceID_Unknown) {
if (sheetNS->FindNameSpaceID(nsnull) != mNameSpace) {
nsIAtom *prefixAtom = sheetNS->FindPrefix(mNameSpace);
NS_ASSERTION(prefixAtom, "how'd we get a non-default namespace "
"without a prefix?");
nsAutoString prefix;
prefixAtom->ToString(prefix);
aString.Append(prefix);
aString.Append(PRUnichar('|'));
wroteNamespace = PR_TRUE;
}
// otherwise it must be the default namespace
} else {
// A selector for an element in any namespace.
if (// Use explicit "*|" only when it's not implied
sheetNS->FindNameSpaceID(nsnull) != kNameSpaceID_None &&
// :not() is special in that the default namespace is
// not implied for non-type selectors
(!aIsNegated || (!mIDList && !mClassList &&
!mPseudoClassList && !mAttrList))) {
aString.AppendLiteral("*|");
wroteNamespace = PR_TRUE;
}
}
}
}
}
}
if (!mTag) {
// Universal selector: avoid writing the universal selector when we
// can avoid it, especially since we're required to avoid it for the
// inside of :not()
if (wroteNamespace ||
(!mIDList && !mClassList && !mPseudoClassList && !mAttrList &&
(aIsNegated || !mNegations))) {
aString.Append(PRUnichar('*'));
}
} else {
// Append the tag name
if (isPseudoElement) {
if (!mNext) {
// Lone pseudo-element selector -- toss in a wildcard type selector
// XXXldb Why?
aString.Append(PRUnichar('*'));
}
if (!nsCSSPseudoElements::IsCSS2PseudoElement(mTag)) {
aString.Append(PRUnichar(':'));
}
}
nsAutoString prefix;
mTag->ToString(prefix);
aString.Append(prefix);
}
// Append the id, if there is one
if (mIDList) {
nsAtomList* list = mIDList;
while (list != nsnull) {
list->mAtom->ToString(temp);
aString.Append(PRUnichar('#'));
aString.Append(temp);
list = list->mNext;
}
}
// Append each class in the linked list
if (mClassList) {
nsAtomList* list = mClassList;
while (list != nsnull) {
list->mAtom->ToString(temp);
aString.Append(PRUnichar('.'));
aString.Append(temp);
list = list->mNext;
}
}
// Append each attribute selector in the linked list
if (mAttrList) {
nsAttrSelector* list = mAttrList;
while (list != nsnull) {
aString.Append(PRUnichar('['));
// Append the namespace prefix
if (list->mNameSpace > 0) {
if (aSheet) {
nsXMLNameSpaceMap *sheetNS = aSheet->GetNameSpaceMap();
// will return null if namespace was the default
nsIAtom *prefixAtom = sheetNS->FindPrefix(list->mNameSpace);
if (prefixAtom) {
nsAutoString prefix;
prefixAtom->ToString(prefix);
aString.Append(prefix);
aString.Append(PRUnichar('|'));
}
}
}
// Append the attribute name
list->mAttr->ToString(temp);
aString.Append(temp);
if (list->mFunction != NS_ATTR_FUNC_SET) {
// Append the function
if (list->mFunction == NS_ATTR_FUNC_INCLUDES)
aString.Append(PRUnichar('~'));
else if (list->mFunction == NS_ATTR_FUNC_DASHMATCH)
aString.Append(PRUnichar('|'));
else if (list->mFunction == NS_ATTR_FUNC_BEGINSMATCH)
aString.Append(PRUnichar('^'));
else if (list->mFunction == NS_ATTR_FUNC_ENDSMATCH)
aString.Append(PRUnichar('$'));
else if (list->mFunction == NS_ATTR_FUNC_CONTAINSMATCH)
aString.Append(PRUnichar('*'));
aString.Append(PRUnichar('='));
// Append the value
nsAutoString escaped;
nsStyleUtil::EscapeCSSString(list->mValue, escaped);
aString.Append(PRUnichar('\"'));
aString.Append(escaped);
aString.Append(PRUnichar('\"'));
}
aString.Append(PRUnichar(']'));
list = list->mNext;
}
}
// Append each pseudo-class in the linked list
if (mPseudoClassList) {
nsAtomStringList* list = mPseudoClassList;
while (list != nsnull) {
list->mAtom->ToString(temp);
aString.Append(temp);
if (nsnull != list->mString) {
aString.Append(PRUnichar('('));
aString.Append(list->mString);
aString.Append(PRUnichar(')'));
}
list = list->mNext;
}
}
if (!aIsNegated) {
for (nsCSSSelector* negation = mNegations; negation;
negation = negation->mNegations) {
aString.AppendLiteral(":not(");
negation->ToStringInternal(aString, aSheet, PR_FALSE, PR_TRUE);
aString.Append(PRUnichar(')'));
}
}
// Append the operator only if the selector is not negated and is not
// a pseudo-element
if (!aIsNegated && mOperator && !aIsPseudoElem) {
aString.Append(PRUnichar(' '));
aString.Append(mOperator);
}
}
void
nsCSSSelector::AppendToStringWithoutCombinatorsOrNegations
(nsAString& aString, nsCSSStyleSheet* aSheet,
PRBool aIsNegated) const
{
nsAutoString temp;
PRBool isPseudoElement = IsPseudoElement();
// For non-pseudo-element selectors or for lone pseudo-elements, deal with
// namespace prefixes.
PRBool wroteNamespace = PR_FALSE;
if (!isPseudoElement || !mNext) {
// append the namespace prefix if needed
nsXMLNameSpaceMap *sheetNS = aSheet ? aSheet->GetNameSpaceMap() : nsnull;
// sheetNS is non-null if and only if we had an @namespace rule. If it's
// null, that means that the only namespaces we could have are the
// wildcard namespace (which can be implicit in this case) and the "none"
// namespace, which then needs to be explicitly specified.
if (!sheetNS) {
NS_ASSERTION(mNameSpace == kNameSpaceID_Unknown ||
mNameSpace == kNameSpaceID_None,
"How did we get this namespace?");
if (mNameSpace == kNameSpaceID_None) {
aString.Append(PRUnichar('|'));
wroteNamespace = PR_TRUE;
}
} else if (sheetNS->FindNameSpaceID(nsnull) == mNameSpace) {
// We have the default namespace (possibly including the wildcard
// namespace). Do nothing.
NS_ASSERTION(mNameSpace == kNameSpaceID_Unknown ||
CanBeNamespaced(aIsNegated),
"How did we end up with this namespace?");
} else if (mNameSpace == kNameSpaceID_None) {
NS_ASSERTION(CanBeNamespaced(aIsNegated),
"How did we end up with this namespace?");
aString.Append(PRUnichar('|'));
wroteNamespace = PR_TRUE;
} else if (mNameSpace != kNameSpaceID_Unknown) {
NS_ASSERTION(CanBeNamespaced(aIsNegated),
"How did we end up with this namespace?");
nsIAtom *prefixAtom = sheetNS->FindPrefix(mNameSpace);
NS_ASSERTION(prefixAtom, "how'd we get a non-default namespace "
"without a prefix?");
nsStyleUtil::AppendEscapedCSSIdent(nsDependentAtomString(prefixAtom),
aString);
aString.Append(PRUnichar('|'));
wroteNamespace = PR_TRUE;
} else {
// A selector for an element in any namespace, while the default
// namespace is something else. :not() is special in that the default
// namespace is not implied for non-type selectors, so if this is a
// negated non-type selector we don't need to output an explicit wildcard
// namespace here, since those default to a wildcard namespace.
if (CanBeNamespaced(aIsNegated)) {
aString.AppendLiteral("*|");
wroteNamespace = PR_TRUE;
}
}
}
if (!mLowercaseTag) {
// Universal selector: avoid writing the universal selector when we
// can avoid it, especially since we're required to avoid it for the
// inside of :not()
if (wroteNamespace ||
(!mIDList && !mClassList && !mPseudoClassList && !mAttrList &&
(aIsNegated || !mNegations))) {
aString.Append(PRUnichar('*'));
}
} else {
// Append the tag name
nsAutoString tag;
(isPseudoElement ? mLowercaseTag : mCasedTag)->ToString(tag);
if (isPseudoElement) {
if (!mNext) {
// Lone pseudo-element selector -- toss in a wildcard type selector
// XXXldb Why?
aString.Append(PRUnichar('*'));
}
if (!nsCSSPseudoElements::IsCSS2PseudoElement(mLowercaseTag)) {
aString.Append(PRUnichar(':'));
}
// This should not be escaped since (a) the pseudo-element string
// has a ":" that can't be escaped and (b) all pseudo-elements at
// this point are known, and therefore we know they don't need
// escaping.
aString.Append(tag);
} else {
nsStyleUtil::AppendEscapedCSSIdent(tag, aString);
}
}
// Append the id, if there is one
if (mIDList) {
nsAtomList* list = mIDList;
while (list != nsnull) {
list->mAtom->ToString(temp);
aString.Append(PRUnichar('#'));
nsStyleUtil::AppendEscapedCSSIdent(temp, aString);
list = list->mNext;
}
}
// Append each class in the linked list
if (mClassList) {
if (isPseudoElement) {
#ifdef MOZ_XUL
NS_ABORT_IF_FALSE(nsCSSAnonBoxes::IsTreePseudoElement(mLowercaseTag),
"must be tree pseudo-element");
aString.Append(PRUnichar('('));
for (nsAtomList* list = mClassList; list; list = list->mNext) {
nsStyleUtil::AppendEscapedCSSIdent(nsDependentAtomString(list->mAtom), aString);
aString.Append(PRUnichar(','));
}
// replace the final comma with a close-paren
aString.Replace(aString.Length() - 1, 1, PRUnichar(')'));
#else
NS_ERROR("Can't happen");
#endif
} else {
nsAtomList* list = mClassList;
while (list != nsnull) {
list->mAtom->ToString(temp);
aString.Append(PRUnichar('.'));
nsStyleUtil::AppendEscapedCSSIdent(temp, aString);
list = list->mNext;
}
}
}
// Append each attribute selector in the linked list
if (mAttrList) {
nsAttrSelector* list = mAttrList;
while (list != nsnull) {
aString.Append(PRUnichar('['));
// Append the namespace prefix
if (list->mNameSpace == kNameSpaceID_Unknown) {
aString.Append(PRUnichar('*'));
aString.Append(PRUnichar('|'));
} else if (list->mNameSpace != kNameSpaceID_None) {
if (aSheet) {
nsXMLNameSpaceMap *sheetNS = aSheet->GetNameSpaceMap();
nsIAtom *prefixAtom = sheetNS->FindPrefix(list->mNameSpace);
// Default namespaces don't apply to attribute selectors, so
// we must have a useful prefix.
NS_ASSERTION(prefixAtom,
"How did we end up with a namespace if the prefix "
"is unknown?");
nsAutoString prefix;
prefixAtom->ToString(prefix);
nsStyleUtil::AppendEscapedCSSIdent(prefix, aString);
aString.Append(PRUnichar('|'));
}
}
// Append the attribute name
list->mCasedAttr->ToString(temp);
nsStyleUtil::AppendEscapedCSSIdent(temp, aString);
if (list->mFunction != NS_ATTR_FUNC_SET) {
// Append the function
if (list->mFunction == NS_ATTR_FUNC_INCLUDES)
aString.Append(PRUnichar('~'));
else if (list->mFunction == NS_ATTR_FUNC_DASHMATCH)
aString.Append(PRUnichar('|'));
else if (list->mFunction == NS_ATTR_FUNC_BEGINSMATCH)
aString.Append(PRUnichar('^'));
else if (list->mFunction == NS_ATTR_FUNC_ENDSMATCH)
aString.Append(PRUnichar('$'));
else if (list->mFunction == NS_ATTR_FUNC_CONTAINSMATCH)
aString.Append(PRUnichar('*'));
aString.Append(PRUnichar('='));
// Append the value
nsStyleUtil::AppendEscapedCSSString(list->mValue, aString);
}
aString.Append(PRUnichar(']'));
list = list->mNext;
}
}
// Append each pseudo-class in the linked list
for (nsPseudoClassList* list = mPseudoClassList; list; list = list->mNext) {
nsCSSPseudoClasses::PseudoTypeToString(list->mType, temp);
// This should not be escaped since (a) the pseudo-class string
// has a ":" that can't be escaped and (b) all pseudo-classes at
// this point are known, and therefore we know they don't need
// escaping.
aString.Append(temp);
if (list->u.mMemory) {
aString.Append(PRUnichar('('));
if (nsCSSPseudoClasses::HasStringArg(list->mType)) {
nsStyleUtil::AppendEscapedCSSIdent(
nsDependentString(list->u.mString), aString);
} else if (nsCSSPseudoClasses::HasNthPairArg(list->mType)) {
PRInt32 a = list->u.mNumbers[0],
b = list->u.mNumbers[1];
temp.Truncate();
if (a != 0) {
if (a == -1) {
temp.Append(PRUnichar('-'));
} else if (a != 1) {
temp.AppendInt(a);
}
temp.Append(PRUnichar('n'));
}
if (b != 0 || a == 0) {
if (b >= 0 && a != 0) // check a != 0 for whether we printed above
temp.Append(PRUnichar('+'));
temp.AppendInt(b);
}
aString.Append(temp);
} else {
NS_ASSERTION(nsCSSPseudoClasses::HasSelectorListArg(list->mType),
"unexpected pseudo-class");
nsString tmp;
list->u.mSelectors->ToString(tmp, aSheet);
aString.Append(tmp);
}
aString.Append(PRUnichar(')'));
}
}
}
