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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "core/css/CSSIdentifierValue.h" |
| 6 |
| 7 #include "core/css/CSSMarkup.h" |
| 8 #include "core/css/CSSValuePool.h" |
| 9 #include "platform/Length.h" |
| 10 #include "wtf/text/StringBuilder.h" |
| 11 #include "wtf/text/WTFString.h" |
| 12 |
| 13 namespace blink { |
| 14 |
| 15 static const AtomicString& valueName(CSSValueID valueID) |
| 16 { |
| 17 DCHECK_GE(valueID, 0); |
| 18 DCHECK_LT(valueID, numCSSValueKeywords); |
| 19 |
| 20 if (valueID < 0) |
| 21 return nullAtom; |
| 22 |
| 23 static AtomicString* keywordStrings = new AtomicString[numCSSValueKeywords];
// Leaked intentionally. |
| 24 AtomicString& keywordString = keywordStrings[valueID]; |
| 25 if (keywordString.isNull()) |
| 26 keywordString = getValueName(valueID); |
| 27 return keywordString; |
| 28 } |
| 29 |
| 30 CSSIdentifierValue* CSSIdentifierValue::create(CSSValueID valueID) |
| 31 { |
| 32 CSSIdentifierValue* cssValue = cssValuePool().identifierCacheValue(valueID); |
| 33 if (!cssValue) |
| 34 cssValue = cssValuePool().setIdentifierCacheValue(valueID, new CSSIdenti
fierValue(valueID)); |
| 35 return cssValue; |
| 36 } |
| 37 |
| 38 String CSSIdentifierValue::customCSSText() const |
| 39 { |
| 40 return valueName(m_valueID); |
| 41 } |
| 42 |
| 43 CSSIdentifierValue::CSSIdentifierValue(CSSValueID valueID) |
| 44 : CSSValue(IdentifierClass) |
| 45 , m_valueID(valueID) |
| 46 { |
| 47 // TODO(sashab): Add a DCHECK_NE(valueID, CSSValueInvalid) once no code path
s |
| 48 // cause this to happen. |
| 49 } |
| 50 |
| 51 CSSIdentifierValue::CSSIdentifierValue(const Length& length) |
| 52 : CSSValue(IdentifierClass) |
| 53 { |
| 54 switch (length.type()) { |
| 55 case Auto: |
| 56 m_valueID = CSSValueAuto; |
| 57 break; |
| 58 case MinContent: |
| 59 m_valueID = CSSValueMinContent; |
| 60 break; |
| 61 case MaxContent: |
| 62 m_valueID = CSSValueMaxContent; |
| 63 break; |
| 64 case FillAvailable: |
| 65 m_valueID = CSSValueWebkitFillAvailable; |
| 66 break; |
| 67 case FitContent: |
| 68 m_valueID = CSSValueFitContent; |
| 69 break; |
| 70 case ExtendToZoom: |
| 71 m_valueID = CSSValueInternalExtendToZoom; |
| 72 case Percent: |
| 73 case Fixed: |
| 74 case Calculated: |
| 75 case DeviceWidth: |
| 76 case DeviceHeight: |
| 77 case MaxSizeNone: |
| 78 NOTREACHED(); |
| 79 break; |
| 80 } |
| 81 } |
| 82 |
| 83 DEFINE_TRACE_AFTER_DISPATCH(CSSIdentifierValue) |
| 84 { |
| 85 CSSValue::traceAfterDispatch(visitor); |
| 86 } |
| 87 |
| 88 } // namespace blink |
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