105 lines
3.7 KiB
C++
105 lines
3.7 KiB
C++
/*
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* Copyright (C) 2012 Motorola Mobility 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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* 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
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* copyright notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Motorola Mobility Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* 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 "config.h"
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#include "DOMCSSNamespace.h"
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#include "CSSMarkup.h"
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#include "CSSParser.h"
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#include "CSSPropertyParser.h"
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#include "Document.h"
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#include "HighlightRegister.h"
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#include "StyleProperties.h"
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#include <wtf/text/StringBuilder.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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static String valueWithoutImportant(const String& value)
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{
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if (!value.endsWithIgnoringASCIICase("important"))
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return value;
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String newValue = value;
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int bangIndex = newValue.length() - 9 - 1;
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if (newValue[bangIndex] == ' ')
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bangIndex--;
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newValue = newValue.left(bangIndex);
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return newValue;
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}
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bool DOMCSSNamespace::supports(Document& document, const String& property, const String& value)
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{
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CSSPropertyID propertyID = cssPropertyID(property.stripWhiteSpace());
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CSSParserContext parserContext(document);
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if (parserContext.isPropertyRuntimeDisabled(propertyID))
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return false;
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if (isInternalCSSProperty(propertyID))
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return false;
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if (propertyID == CSSPropertyInvalid)
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return false;
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// CSSParser::parseValue() won't work correctly if !important is present,
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// so just get rid of it. It doesn't matter to supports() if it's actually
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// there or not, provided how it's specified in the value is correct.
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String normalizedValue = value.stripWhiteSpace().simplifyWhiteSpace();
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normalizedValue = valueWithoutImportant(normalizedValue);
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if (normalizedValue.isEmpty())
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return false;
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auto dummyStyle = MutableStyleProperties::create();
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return CSSParser::parseValue(dummyStyle, propertyID, normalizedValue, false, parserContext) != CSSParser::ParseResult::Error;
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}
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bool DOMCSSNamespace::supports(Document& document, const String& conditionText)
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{
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CSSParserContext context(document);
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CSSParser parser(context);
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return parser.parseSupportsCondition(conditionText);
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}
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String DOMCSSNamespace::escape(const String& ident)
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{
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StringBuilder builder;
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serializeIdentifier(ident, builder);
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return builder.toString();
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}
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HighlightRegister& DOMCSSNamespace::highlights(Document& document)
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{
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return document.highlightRegister();
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}
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}
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