2 * Copyright (C) 2012 Motorola Mobility Inc. All rights reserved.
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5 * modification, are permitted provided that the following conditions are
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31 #include "core/css/DOMWindowCSS.h"
33 #include "core/css/parser/BisonCSSParser.h"
34 #include "core/css/RuntimeCSSEnabled.h"
35 #include "core/css/StylePropertySet.h"
36 #include "wtf/text/WTFString.h"
40 PassRefPtrWillBeRawPtr<DOMWindowCSS> DOMWindowCSS::create()
42 return adoptRefWillBeNoop(new DOMWindowCSS());
45 static String valueWithoutImportant(const String& value)
47 if (!value.endsWith("important", false))
50 String newValue = value;
51 int bangIndex = newValue.length() - 9 - 1;
52 if (newValue[bangIndex] == ' ')
54 newValue = newValue.left(bangIndex);
59 bool DOMWindowCSS::supports(const String& property, const String& value) const
61 CSSPropertyID propertyID = cssPropertyID(property.stripWhiteSpace());
62 if (propertyID == CSSPropertyInvalid)
65 if (!RuntimeCSSEnabled::isCSSPropertyEnabled(propertyID))
68 // BisonCSSParser::parseValue() won't work correctly if !important is present,
69 // so just get rid of it. It doesn't matter to supports() if it's actually
70 // there or not, provided how it's specified in the value is correct.
71 String normalizedValue = value.stripWhiteSpace().simplifyWhiteSpace();
72 normalizedValue = valueWithoutImportant(normalizedValue);
74 if (normalizedValue.isEmpty())
77 RefPtrWillBeRawPtr<MutableStylePropertySet> dummyStyle = MutableStylePropertySet::create();
78 return BisonCSSParser::parseValue(dummyStyle.get(), propertyID, normalizedValue, false, HTMLStandardMode, 0);
81 bool DOMWindowCSS::supports(const String& conditionText) const
83 CSSParserContext context(HTMLStandardMode, 0);
84 BisonCSSParser parser(context);
85 return parser.parseSupportsCondition(conditionText);