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29ce4f5a9a
We now store the bits about what was matched inside the SelectorChecker and map them to operations that mutate the style after matching the selector. This eliminates the SelectorChecker::Mode. R=ojan@chromium.org Review URL: https://codereview.chromium.org/840163003
128 lines
4.3 KiB
C++
128 lines
4.3 KiB
C++
/*
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* Copyright (C) 2011 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/config.h"
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#include "sky/engine/core/html/HTMLContentElement.h"
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#include "gen/sky/core/HTMLNames.h"
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#include "gen/sky/platform/RuntimeEnabledFeatures.h"
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#include "sky/engine/core/css/SelectorChecker.h"
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#include "sky/engine/core/css/parser/BisonCSSParser.h"
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#include "sky/engine/core/dom/QualifiedName.h"
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#include "sky/engine/core/dom/shadow/ElementShadow.h"
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#include "sky/engine/core/dom/shadow/ShadowRoot.h"
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namespace blink {
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inline HTMLContentElement::HTMLContentElement(Document& document)
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: InsertionPoint(HTMLNames::contentTag, document)
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, m_shouldParseSelect(false)
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, m_isValidSelector(true)
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{
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}
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DEFINE_NODE_FACTORY(HTMLContentElement)
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HTMLContentElement::~HTMLContentElement()
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{
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}
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void HTMLContentElement::parseSelect()
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{
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ASSERT(m_shouldParseSelect);
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BisonCSSParser parser(CSSParserContext(document(), 0));
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parser.parseSelector(m_select, m_selectorList);
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m_shouldParseSelect = false;
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m_isValidSelector = validateSelect();
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if (!m_isValidSelector) {
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CSSSelectorList emptyList;
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m_selectorList.adopt(emptyList);
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}
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}
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void HTMLContentElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
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{
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if (name == HTMLNames::selectAttr) {
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if (ShadowRoot* root = containingShadowRoot())
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root->owner()->willAffectSelector();
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m_shouldParseSelect = true;
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m_select = value;
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} else {
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InsertionPoint::parseAttribute(name, value);
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}
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}
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static inline bool includesDisallowedPseudoClass(const CSSSelector& selector)
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{
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return selector.match() == CSSSelector::PseudoClass;
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}
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bool HTMLContentElement::validateSelect() const
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{
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ASSERT(!m_shouldParseSelect);
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if (m_select.isNull() || m_select.isEmpty())
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return true;
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if (!m_selectorList.isValid())
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return false;
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// FIXME(sky): Should we allow pseudo classes in select?
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bool allowAnyPseudoClasses = false;
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for (const CSSSelector* selector = m_selectorList.first(); selector; selector = m_selectorList.next(*selector)) {
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if (!selector->isCompound())
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return false;
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if (allowAnyPseudoClasses)
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continue;
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for (const CSSSelector* subSelector = selector; subSelector; subSelector = subSelector->tagHistory()) {
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if (includesDisallowedPseudoClass(*subSelector))
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return false;
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}
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}
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return true;
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}
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static inline bool checkOneSelector(const CSSSelector& selector, const Vector<RawPtr<Node>, 32>& siblings, int nth)
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{
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Element* element = toElement(siblings[nth]);
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SelectorChecker selectorChecker;
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SelectorChecker::SelectorCheckingContext context(selector, element);
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return selectorChecker.match(context);
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}
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bool HTMLContentElement::matchSelector(const Vector<RawPtr<Node>, 32>& siblings, int nth) const
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{
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for (const CSSSelector* selector = selectorList().first(); selector; selector = CSSSelectorList::next(*selector)) {
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if (checkOneSelector(*selector, siblings, nth))
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return true;
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}
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return false;
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}
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}
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