void StyleSheetContents::wrapperDeleteRule(unsigned index)
{
ASSERT(m_isMutable);
ASSERT_WITH_SECURITY_IMPLICATION(index < ruleCount());
unsigned childVectorIndex = index;
if (hasCharsetRule()) {
if (childVectorIndex == 0) {
clearCharsetRule();
return;
}
--childVectorIndex;
}
if (childVectorIndex < m_importRules.size()) {
m_importRules[childVectorIndex]->clearParentStyleSheet();
if (m_importRules[childVectorIndex]->isFontFaceRule())
notifyRemoveFontFaceRule(toStyleRuleFontFace(m_importRules[childVectorIndex].get()));
m_importRules.remove(childVectorIndex);
return;
}
childVectorIndex -= m_importRules.size();
if (m_childRules[childVectorIndex]->isFontFaceRule())
notifyRemoveFontFaceRule(toStyleRuleFontFace(m_childRules[childVectorIndex].get()));
m_childRules.remove(childVectorIndex);
}
void CSSStyleSheet::deleteRule(unsigned index, ExceptionCode& ec)
{
if (index >= length()) {
ec = INDEX_SIZE_ERR;
return;
}
ec = 0;
unsigned childVectorIndex = index;
if (hasCharsetRule()) {
if (childVectorIndex == 0) {
clearCharsetRule();
goto success;
}
--childVectorIndex;
}
if (childVectorIndex < m_importRules.size()) {
m_importRules[childVectorIndex]->clearParentStyleSheet();
m_importRules.remove(childVectorIndex);
goto success;
}
childVectorIndex -= m_importRules.size();
m_childRules.remove(childVectorIndex);
success:
if (!m_childRuleCSSOMWrappers.isEmpty()) {
m_childRuleCSSOMWrappers[index]->setParentStyleSheet(0);
m_childRuleCSSOMWrappers.remove(index);
}
styleSheetChanged();
}
void StyleSheetContents::clearRules()
{
for (unsigned i = 0; i < m_importRules.size(); ++i) {
ASSERT(m_importRules.at(i)->parentStyleSheet() == this);
m_importRules[i]->clearParentStyleSheet();
}
m_importRules.clear();
m_childRules.clear();
clearCharsetRule();
}
void CSSStyleSheet::clearRules()
{
// For style rules outside the document, .parentStyleSheet can become null even if the style rule
// is still observable from JavaScript. This matches the behavior of .parentNode for nodes, but
// it's not ideal because it makes the CSSOM's behavior depend on the timing of garbage collection.
for (unsigned i = 0; i < m_childRuleCSSOMWrappers.size(); ++i) {
if (m_childRuleCSSOMWrappers[i])
m_childRuleCSSOMWrappers[i]->setParentStyleSheet(0);
}
m_childRuleCSSOMWrappers.clear();
for (unsigned i = 0; i < m_importRules.size(); ++i) {
ASSERT(m_importRules.at(i)->parentStyleSheet() == this);
m_importRules[i]->clearParentStyleSheet();
}
m_importRules.clear();
m_childRules.clear();
clearCharsetRule();
}
void StyleSheetContents::wrapperDeleteRule(unsigned index)
{
ASSERT(m_isMutable);
ASSERT(index < ruleCount());
unsigned childVectorIndex = index;
if (hasCharsetRule()) {
if (childVectorIndex == 0) {
clearCharsetRule();
return;
}
--childVectorIndex;
}
if (childVectorIndex < m_importRules.size()) {
m_importRules.remove(childVectorIndex);
return;
}
childVectorIndex -= m_importRules.size();
m_childRules.remove(childVectorIndex);
}
void StyleSheetContents::clearRules()
{
m_importRules.clear();
m_childRules.clear();
clearCharsetRule();
}
