static void
GetMathMLAttributeStyleSheet(nsPresContext* aPresContext,
nsIStyleSheet** aSheet)
{
static const char kTitle[] = "Internal MathML/CSS Attribute Style Sheet";
*aSheet = nsnull;
// first, look if the attribute stylesheet is already there
nsStyleSet *styleSet = aPresContext->StyleSet();
NS_ASSERTION(styleSet, "no style set");
nsAutoString title;
for (PRInt32 i = styleSet->SheetCount(nsStyleSet::eAgentSheet) - 1;
i >= 0; --i) {
nsIStyleSheet *sheet = styleSet->StyleSheetAt(nsStyleSet::eAgentSheet, i);
nsCOMPtr<nsICSSStyleSheet> cssSheet(do_QueryInterface(sheet));
if (cssSheet) {
cssSheet->GetTitle(title);
if (title.Equals(NS_ConvertASCIItoUCS2(kTitle))) {
*aSheet = sheet;
NS_IF_ADDREF(*aSheet);
return;
}
}
}
// then, create a new one if it isn't yet there
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), "about:internal-mathml-attribute-stylesheet");
if (!uri)
return;
nsCOMPtr<nsICSSStyleSheet_MOZILLA_1_8_BRANCH> cssSheet =
do_CreateInstance(kCSSStyleSheetCID);
if (!cssSheet)
return;
cssSheet->SetURIs18(uri, uri, uri);
cssSheet->SetTitle(NS_ConvertASCIItoUCS2(kTitle));
// all done, no further activity from the net involved, so we better do this
cssSheet->SetComplete();
nsCOMPtr<nsIDOMCSSStyleSheet> domSheet(do_QueryInterface(cssSheet));
if (domSheet) {
PRUint32 index;
domSheet->InsertRule(NS_LITERAL_STRING("@namespace url(http://www.w3.org/1998/Math/MathML);"),
0, &index);
}
// insert the stylesheet into the styleset without notifying observers
// XXX Should this be at a different level?
styleSet->PrependStyleSheet(nsStyleSet::eAgentSheet, cssSheet);
*aSheet = cssSheet;
NS_ADDREF(*aSheet);
}
/* static */ void
nsDOMCSSDeclaration::GetCSSParsingEnvironmentForRule(css::Rule* aRule,
CSSParsingEnvironment& aCSSParseEnv)
{
nsIStyleSheet* sheet = aRule ? aRule->GetStyleSheet() : nsnull;
nsRefPtr<nsCSSStyleSheet> cssSheet(do_QueryObject(sheet));
if (!cssSheet) {
aCSSParseEnv.mPrincipal = nsnull;
return;
}
nsIDocument* document = sheet->GetOwningDocument();
aCSSParseEnv.mSheetURI = sheet->GetSheetURI();
aCSSParseEnv.mBaseURI = sheet->GetBaseURI();
aCSSParseEnv.mPrincipal = cssSheet->Principal();
aCSSParseEnv.mCSSLoader = document ? document->CSSLoader() : nsnull;
}
