void StyleEngine::updateActiveStyleSheets(StyleResolverUpdateMode updateMode)
{
ASSERT(isMaster());
ASSERT(!document().inStyleRecalc());
if (!document().isActive())
return;
if (shouldUpdateDocumentStyleSheetCollection(updateMode))
documentStyleSheetCollection()->updateActiveStyleSheets(this, updateMode);
if (shouldUpdateShadowTreeStyleSheetCollection(updateMode)) {
TreeScopeSet treeScopes = updateMode == FullStyleUpdate ? m_activeTreeScopes : m_dirtyTreeScopes;
HashSet<TreeScope*> treeScopesRemoved;
for (TreeScopeSet::iterator it = treeScopes.begin(); it != treeScopes.end(); ++it) {
TreeScope* treeScope = *it;
ASSERT(treeScope != m_document);
ShadowTreeStyleSheetCollection* collection = static_cast<ShadowTreeStyleSheetCollection*>(styleSheetCollectionFor(*treeScope));
ASSERT(collection);
collection->updateActiveStyleSheets(this, updateMode);
if (!collection->hasStyleSheetCandidateNodes())
treeScopesRemoved.add(treeScope);
}
m_activeTreeScopes.removeAll(treeScopesRemoved);
}
InspectorInstrumentation::activeStyleSheetsUpdated(m_document);
m_usesRemUnits = documentStyleSheetCollection()->usesRemUnits();
m_dirtyTreeScopes.clear();
m_documentScopeDirty = false;
}
void StyleEngine::insertTreeScopeInDocumentOrder(TreeScopeSet& treeScopes, TreeScope* treeScope)
{
if (treeScopes.isEmpty()) {
treeScopes.add(treeScope);
return;
}
if (treeScopes.contains(treeScope))
return;
TreeScopeSet::iterator begin = treeScopes.begin();
TreeScopeSet::iterator end = treeScopes.end();
TreeScopeSet::iterator it = end;
TreeScope* followingTreeScope = 0;
do {
--it;
TreeScope* n = *it;
unsigned short position = n->comparePosition(*treeScope);
if (position & Node::DOCUMENT_POSITION_FOLLOWING) {
treeScopes.insertBefore(followingTreeScope, treeScope);
return;
}
followingTreeScope = n;
} while (it != begin);
treeScopes.insertBefore(followingTreeScope, treeScope);
}
void StyleEngine::clearMediaQueryRuleSetOnTreeScopeStyleSheets(TreeScopeSet treeScopes)
{
for (TreeScopeSet::iterator it = treeScopes.begin(); it != treeScopes.end(); ++it) {
TreeScope& treeScope = **it;
ASSERT(treeScope != m_document);
ShadowTreeStyleSheetCollection* collection = static_cast<ShadowTreeStyleSheetCollection*>(styleSheetCollectionFor(treeScope));
ASSERT(collection);
collection->clearMediaQueryRuleSetStyleSheets();
}
}
bool StyleEngine::updateActiveStyleSheets(StyleResolverUpdateMode updateMode)
{
ASSERT(isMaster());
ASSERT(!m_document.inStyleRecalc());
if (!m_document.isActive())
return false;
bool requiresFullStyleRecalc = false;
if (m_documentScopeDirty || updateMode == FullStyleUpdate)
requiresFullStyleRecalc = m_documentStyleSheetCollection.updateActiveStyleSheets(this, updateMode);
if (shouldUpdateShadowTreeStyleSheetCollection(updateMode)) {
TreeScopeSet treeScopes = updateMode == FullStyleUpdate ? m_activeTreeScopes : m_dirtyTreeScopes;
HashSet<TreeScope*> treeScopesRemoved;
for (TreeScopeSet::iterator it = treeScopes.begin(); it != treeScopes.end(); ++it) {
TreeScope* treeScope = *it;
ASSERT(treeScope != m_document);
ShadowTreeStyleSheetCollection* collection = static_cast<ShadowTreeStyleSheetCollection*>(styleSheetCollectionFor(*treeScope));
ASSERT(collection);
collection->updateActiveStyleSheets(this, updateMode);
if (!collection->hasStyleSheetCandidateNodes())
treeScopesRemoved.add(treeScope);
}
if (!treeScopesRemoved.isEmpty())
for (HashSet<TreeScope*>::iterator it = treeScopesRemoved.begin(); it != treeScopesRemoved.end(); ++it)
m_activeTreeScopes.remove(*it);
}
InspectorInstrumentation::activeStyleSheetsUpdated(&m_document);
m_usesRemUnits = m_documentStyleSheetCollection.usesRemUnits();
m_dirtyTreeScopes.clear();
m_documentScopeDirty = false;
return requiresFullStyleRecalc;
}