/* * Copyright (C) 2012 Motorola Mobility Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the distribution. * 3. Neither the name of Motorola Mobility Inc. nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "DOMCSSNamespace.h" #include "CSSMarkup.h" #include "CSSParser.h" #include "CSSPropertyParser.h" #include "Document.h" #include "HighlightMap.h" #include "StyleProperties.h" #include <wtf/text/StringBuilder.h> #include <wtf/text/WTFString.h> namespace WebCore { static String valueWithoutImportant(const String& value) { if (!value.endsWithIgnoringASCIICase("important")) return value; String newValue = value; int bangIndex = newValue.length() - 9 - 1; if (newValue[bangIndex] == ' ') bangIndex--; newValue = newValue.left(bangIndex); return newValue; } bool DOMCSSNamespace::supports(Document& document, const String& property, const String& value) { CSSPropertyID propertyID = cssPropertyID(property.stripWhiteSpace()); if (propertyID == CSSPropertyInvalid) return false; // CSSParser::parseValue() won't work correctly if !important is present, // so just get rid of it. It doesn't matter to supports() if it's actually // there or not, provided how it's specified in the value is correct. String normalizedValue = value.stripWhiteSpace().simplifyWhiteSpace(); normalizedValue = valueWithoutImportant(normalizedValue); if (normalizedValue.isEmpty()) return false; auto dummyStyle = MutableStyleProperties::create(); return CSSParser::parseValue(dummyStyle, propertyID, normalizedValue, false, document) != CSSParser::ParseResult::Error; } bool DOMCSSNamespace::supports(Document& document, const String& conditionText) { CSSParserContext context(document); CSSParser parser(context); return parser.parseSupportsCondition(conditionText); } String DOMCSSNamespace::escape(const String& ident) { StringBuilder builder; serializeIdentifier(ident, builder); return builder.toString(); } HighlightMap& DOMCSSNamespace::highlights(Document& document) { return document.highlightMap(); } }