static CSSStyleSheet* findStyleSheet(StyleEngine* styleEngine, StyleRule* rule)
{
// FIXME: StyleEngine has a bunch of different accessors for StyleSheet lists, is this the only one we need to care about?
const Vector<RefPtr<CSSStyleSheet> >& stylesheets = styleEngine->activeAuthorStyleSheets();
for (size_t i = 0; i < stylesheets.size(); ++i) {
CSSStyleSheet* sheet = stylesheets[i].get();
for (unsigned j = 0; j < sheet->length(); ++j) {
CSSRule* cssRule = sheet->item(j);
if (cssRule->type() != CSSRule::STYLE_RULE)
continue;
CSSStyleRule* cssStyleRule = toCSSStyleRule(cssRule);
if (cssStyleRule->styleRule() == rule)
return sheet;
}
}
return 0;
}
CSSRule* ElementRuleCollector::findStyleRule(CSSRuleCollection* cssRules, StyleRule* styleRule)
{
if (!cssRules)
return 0;
CSSRule* result = 0;
for (unsigned i = 0; i < cssRules->length() && !result; ++i) {
CSSRule* cssRule = cssRules->item(i);
CSSRule::Type cssRuleType = cssRule->type();
if (cssRuleType == CSSRule::STYLE_RULE) {
CSSStyleRule* cssStyleRule = toCSSStyleRule(cssRule);
if (cssStyleRule->styleRule() == styleRule)
result = cssRule;
} else {
result = findStyleRule(nestedRuleList(cssRule), styleRule);
}
}
return result;
}
CSSRule* ElementRuleCollector::findStyleRule(CSSRuleCollection* cssRules,
StyleRule* styleRule) {
if (!cssRules)
return nullptr;
CSSRule* result = 0;
for (unsigned i = 0; i < cssRules->length() && !result; ++i) {
CSSRule* cssRule = cssRules->item(i);
CSSRule::Type cssRuleType = cssRule->type();
if (cssRuleType == CSSRule::kStyleRule) {
CSSStyleRule* cssStyleRule = toCSSStyleRule(cssRule);
if (cssStyleRule->styleRule() == styleRule)
result = cssRule;
} else if (cssRuleType == CSSRule::kImportRule) {
CSSImportRule* cssImportRule = toCSSImportRule(cssRule);
result = findStyleRule(cssImportRule->styleSheet(), styleRule);
} else {
result = findStyleRule(cssRule->cssRules(), styleRule);
}
}
return result;
}
