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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
109 lines
4.1 KiB
C++
109 lines
4.1 KiB
C++
/*
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* Copyright (C) 2011, 2013 Apple Inc. All rights reserved.
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* Copyright (C) 2014 Samsung Electronics. 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
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* are met:
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*
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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY 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 OF
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* 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/dom/SelectorQuery.h"
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#include "sky/engine/bindings/core/v8/ExceptionState.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/Document.h"
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#include "sky/engine/core/dom/ElementTraversal.h"
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#include "sky/engine/core/dom/Node.h"
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#include "sky/engine/core/dom/StaticNodeList.h"
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namespace blink {
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PassOwnPtr<SelectorQuery> SelectorQuery::adopt(CSSSelectorList& selectorList)
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{
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return adoptPtr(new SelectorQuery(selectorList));
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}
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SelectorQuery::SelectorQuery(CSSSelectorList& selectorList)
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{
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m_selectors.adopt(selectorList);
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}
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bool SelectorQuery::matches(Element& element) const
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{
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return selectorMatches(element, element);
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}
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PassRefPtr<StaticElementList> SelectorQuery::queryAll(ContainerNode& rootNode) const
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{
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Vector<RefPtr<Element> > result;
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for (Element* element = ElementTraversal::firstWithin(rootNode); element; element = ElementTraversal::next(*element, &rootNode)) {
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if (selectorMatches(rootNode, *element))
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result.append(element);
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}
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return StaticElementList::adopt(result);
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}
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PassRefPtr<Element> SelectorQuery::queryFirst(ContainerNode& rootNode) const
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{
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for (Element* element = ElementTraversal::firstWithin(rootNode); element; element = ElementTraversal::next(*element, &rootNode)) {
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if (selectorMatches(rootNode, *element))
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return element;
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}
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return nullptr;
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}
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bool SelectorQuery::selectorMatches(ContainerNode& rootNode, Element& element) const
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{
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SelectorChecker checker;
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for (const CSSSelector* selector = m_selectors.first(); selector; selector = CSSSelectorList::next(*selector)) {
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SelectorChecker::SelectorCheckingContext context(*selector, &element);
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context.scope = !rootNode.isDocumentNode() ? &rootNode : 0;
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if (checker.match(context))
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return true;
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}
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return false;
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}
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SelectorQuery* SelectorQueryCache::add(const AtomicString& selectors, const Document& document, ExceptionState& exceptionState)
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{
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HashMap<AtomicString, OwnPtr<SelectorQuery> >::iterator it = m_entries.find(selectors);
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if (it != m_entries.end())
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return it->value.get();
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BisonCSSParser parser(CSSParserContext(document, 0));
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CSSSelectorList selectorList;
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parser.parseSelector(selectors, selectorList);
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if (!selectorList.first()) {
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exceptionState.throwDOMException(SyntaxError, "'" + selectors + "' is not a valid selector.");
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return 0;
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}
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const unsigned maximumSelectorQueryCacheSize = 256;
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if (m_entries.size() == maximumSelectorQueryCacheSize)
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m_entries.remove(m_entries.begin());
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return m_entries.add(selectors, SelectorQuery::adopt(selectorList)).storedValue->value.get();
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}
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}
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