internal nsresult ParseMediaList(string aBuffer,
Uri aURI, // for error reporting
uint32_t aLineNumber, // for error reporting
nsMediaList aMediaList,
bool aHTMLMode)
{
// XXX Are there cases where the caller wants to keep what it already
// has in case of parser error? If GatherMedia ever changes to return
// a value other than true, we probably should avoid modifying aMediaList.
aMediaList.Clear();
// fake base URI since media lists don't have URIs in them
var scanner = new nsCSSScanner(aBuffer, aLineNumber);
var reporter = new ErrorReporter(scanner, mSheet, mChildLoader, aURI);
InitScanner(scanner, reporter, aURI, aURI, null);
mHTMLMediaMode = aHTMLMode;
// XXXldb We need to make the scanner not skip CSS comments! (Or
// should we?)
// For aHTMLMode, we used to follow the parsing rules in
// http://www.w3.org/TR/1999/REC-html401-19991224/types.html#type-media-descriptors
// which wouldn't work for media queries since they remove all but the
// first word. However, they're changed in
// http://www.whatwg.org/specs/web-apps/current-work/multipage/section-document.html#media2
// (as of 2008-05-29) which says that the media attribute just points
// to a media query. (The main substative difference is the relative
// precedence of commas and paretheses.)
bool parsedOK = GatherMedia(aMediaList, false);
Debug.Assert(parsedOK, "GatherMedia returned false; we probably want to avoid trashing aMediaList");
mReporter.ClearError();
ReleaseScanner();
mHTMLMediaMode = false;
return nsresult.OK;
}
