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| 1 // Copyright 2015 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 #ifndef CSSLengthValue_h | |
| 6 #define CSSLengthValue_h | |
| 7 | |
| 8 #include "core/css/CSSPrimitiveValue.h" | |
| 9 #include "core/css/cssom/CSSStyleValue.h" | |
| 10 | |
| 11 namespace blink { | |
| 12 | |
| 13 class CSSCalcDictionary; | |
| 14 class ExceptionState; | |
| 15 | |
| 16 class CORE_EXPORT CSSLengthValue : public CSSStyleValue { | |
| 17 WTF_MAKE_NONCOPYABLE(CSSLengthValue); | |
| 18 DEFINE_WRAPPERTYPEINFO(); | |
| 19 | |
| 20 public: | |
| 21 static const int kNumSupportedUnits = 15; | |
| 22 | |
| 23 static CSSLengthValue* from(const String& css_text, ExceptionState&); | |
| 24 static CSSLengthValue* from(double value, | |
| 25 const String& type_str, | |
| 26 ExceptionState&); | |
| 27 static CSSLengthValue* from(const CSSCalcDictionary&, ExceptionState&); | |
| 28 | |
| 29 static bool IsSupportedLengthUnit(CSSPrimitiveValue::UnitType unit) { | |
| 30 return (CSSPrimitiveValue::IsLength(unit) || | |
| 31 unit == CSSPrimitiveValue::UnitType::kPercentage) && | |
| 32 unit != CSSPrimitiveValue::UnitType::kQuirkyEms && | |
| 33 unit != CSSPrimitiveValue::UnitType::kUserUnits; | |
| 34 } | |
| 35 static CSSPrimitiveValue::UnitType UnitFromName(const String& name); | |
| 36 static CSSLengthValue* FromCSSValue(const CSSPrimitiveValue&); | |
| 37 | |
| 38 CSSLengthValue* add(const CSSLengthValue* other); | |
| 39 CSSLengthValue* subtract(const CSSLengthValue* other); | |
| 40 CSSLengthValue* multiply(double); | |
| 41 CSSLengthValue* divide(double, ExceptionState&); | |
| 42 | |
| 43 virtual bool ContainsPercent() const = 0; | |
| 44 | |
| 45 protected: | |
| 46 CSSLengthValue() {} | |
| 47 | |
| 48 virtual CSSLengthValue* AddInternal(const CSSLengthValue* other); | |
| 49 virtual CSSLengthValue* SubtractInternal(const CSSLengthValue* other); | |
| 50 virtual CSSLengthValue* MultiplyInternal(double); | |
| 51 virtual CSSLengthValue* DivideInternal(double); | |
| 52 }; | |
| 53 | |
| 54 DEFINE_TYPE_CASTS(CSSLengthValue, | |
| 55 CSSStyleValue, | |
| 56 value, | |
| 57 (value->GetType() == CSSStyleValue::kSimpleLengthType || | |
| 58 value->GetType() == CSSStyleValue::kCalcLengthType), | |
| 59 (value.GetType() == CSSStyleValue::kSimpleLengthType || | |
| 60 value.GetType() == CSSStyleValue::kCalcLengthType)); | |
| 61 | |
| 62 } // namespace blink | |
| 63 | |
| 64 #endif | |
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Chromium Code Reviews
Issue 2867883003:
[CSS Typed OM] Delete obsolete number and length classes from Typed OM (Closed)
