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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
* Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
* Copyright (C) Research In Motion Limited 2011. All rights reserved.
* Copyright (C) 2013 Google Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/css/TreeBoundaryCrossingRules.h"
#include "core/css/ElementRuleCollector.h"
#include "core/css/RuleFeature.h"
#include "core/dom/StyleEngine.h"
#include "core/dom/shadow/ShadowRoot.h"
namespace WebCore {
static void addRules(RuleSet* ruleSet, const WillBeHeapVector<MinimalRuleData>& rules)
{
for (unsigned i = 0; i < rules.size(); ++i) {
const MinimalRuleData& info = rules[i];
ruleSet->addRule(info.m_rule, info.m_selectorIndex, info.m_flags);
}
}
void TreeBoundaryCrossingRules::addTreeBoundaryCrossingRules(const RuleSet& authorRules, ContainerNode& scopingNode, CSSStyleSheet* parentStyleSheet)
{
if (authorRules.treeBoundaryCrossingRules().isEmpty() && (scopingNode.isDocumentNode() || authorRules.shadowDistributedRules().isEmpty()))
return;
OwnPtrWillBeRawPtr<RuleSet> ruleSetForScope = RuleSet::create();
addRules(ruleSetForScope.get(), authorRules.treeBoundaryCrossingRules());
if (!scopingNode.isDocumentNode())
addRules(ruleSetForScope.get(), authorRules.shadowDistributedRules());
if (!m_treeBoundaryCrossingRuleSetMap.contains(&scopingNode)) {
m_treeBoundaryCrossingRuleSetMap.add(&scopingNode, adoptPtrWillBeNoop(new CSSStyleSheetRuleSubSet()));
m_scopingNodes.add(&scopingNode);
}
CSSStyleSheetRuleSubSet* ruleSubSet = m_treeBoundaryCrossingRuleSetMap.get(&scopingNode);
ruleSubSet->append(std::make_pair(parentStyleSheet, ruleSetForScope.release()));
}
void TreeBoundaryCrossingRules::collectTreeBoundaryCrossingRules(Element* element, ElementRuleCollector& collector, bool includeEmptyRules)
{
if (m_treeBoundaryCrossingRuleSetMap.isEmpty())
return;
RuleRange ruleRange = collector.matchedResult().ranges.authorRuleRange();
// When comparing rules declared in outer treescopes, outer's rules win.
CascadeOrder outerCascadeOrder = size() + size();
// When comparing rules declared in inner treescopes, inner's rules win.
CascadeOrder innerCascadeOrder = size();
for (DocumentOrderedList::iterator it = m_scopingNodes.begin(); it != m_scopingNodes.end(); ++it) {
const ContainerNode* scopingNode = toContainerNode(*it);
CSSStyleSheetRuleSubSet* ruleSubSet = m_treeBoundaryCrossingRuleSetMap.get(scopingNode);
unsigned boundaryBehavior = SelectorChecker::ScopeContainsLastMatchedElement;
bool isInnerTreeScope = element->treeScope().isInclusiveAncestorOf(scopingNode->treeScope());
// If a given scoping node is a shadow root, we should use ScopeIsShadowRoot.
if (scopingNode && scopingNode->isShadowRoot())
boundaryBehavior |= SelectorChecker::ScopeIsShadowRoot;
CascadeOrder cascadeOrder = isInnerTreeScope ? innerCascadeOrder : outerCascadeOrder;
for (CSSStyleSheetRuleSubSet::iterator it = ruleSubSet->begin(); it != ruleSubSet->end(); ++it) {
CSSStyleSheet* parentStyleSheet = it->first;
RuleSet* ruleSet = it->second.get();
collector.collectMatchingRules(MatchRequest(ruleSet, includeEmptyRules, scopingNode, parentStyleSheet), ruleRange, static_cast<SelectorChecker::BehaviorAtBoundary>(boundaryBehavior), ignoreCascadeScope, cascadeOrder);
}
++innerCascadeOrder;
--outerCascadeOrder;
}
}
void TreeBoundaryCrossingRules::reset(const ContainerNode* scopingNode)
{
m_treeBoundaryCrossingRuleSetMap.remove(scopingNode);
m_scopingNodes.remove(scopingNode);
}
void TreeBoundaryCrossingRules::collectFeaturesFromRuleSubSet(CSSStyleSheetRuleSubSet* ruleSubSet, RuleFeatureSet& features)
{
for (CSSStyleSheetRuleSubSet::iterator it = ruleSubSet->begin(); it != ruleSubSet->end(); ++it)
features.add(it->second->features());
}
void TreeBoundaryCrossingRules::collectFeaturesTo(RuleFeatureSet& features)
{
for (TreeBoundaryCrossingRuleSetMap::iterator::Values it = m_treeBoundaryCrossingRuleSetMap.values().begin(); it != m_treeBoundaryCrossingRuleSetMap.values().end(); ++it)
collectFeaturesFromRuleSubSet(it->get(), features);
}
} // namespace WebCore
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