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      1 // Copyright 2014 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 MediaQueryToken_h
      6 #define MediaQueryToken_h
      7 
      8 #include "core/css/CSSPrimitiveValue.h"
      9 #include "wtf/text/WTFString.h"
     10 
     11 namespace blink {
     12 
     13 enum MediaQueryTokenType {
     14     IdentToken = 0,
     15     FunctionToken,
     16     DelimiterToken,
     17     NumberToken,
     18     PercentageToken,
     19     DimensionToken,
     20     WhitespaceToken,
     21     ColonToken,
     22     SemicolonToken,
     23     CommaToken,
     24     LeftParenthesisToken,
     25     RightParenthesisToken,
     26     LeftBracketToken,
     27     RightBracketToken,
     28     LeftBraceToken,
     29     RightBraceToken,
     30     StringToken,
     31     BadStringToken,
     32     EOFToken,
     33     CommentToken,
     34 };
     35 
     36 enum NumericValueType {
     37     IntegerValueType,
     38     NumberValueType,
     39 };
     40 
     41 class MediaQueryToken {
     42 public:
     43     enum BlockType {
     44         NotBlock,
     45         BlockStart,
     46         BlockEnd,
     47     };
     48 
     49     MediaQueryToken(MediaQueryTokenType, BlockType = NotBlock);
     50     MediaQueryToken(MediaQueryTokenType, String value, BlockType = NotBlock);
     51 
     52     MediaQueryToken(MediaQueryTokenType, UChar); // for DelimiterToken
     53     MediaQueryToken(MediaQueryTokenType, double, NumericValueType); // for NumberToken
     54 
     55     // Converts NumberToken to DimensionToken.
     56     void convertToDimensionWithUnit(String);
     57 
     58     // Converts NumberToken to PercentageToken.
     59     void convertToPercentage();
     60 
     61     MediaQueryTokenType type() const { return m_type; }
     62     String value() const { return m_value; }
     63     String textForUnitTests() const;
     64 
     65     UChar delimiter() const;
     66     NumericValueType numericValueType() const;
     67     double numericValue() const;
     68     BlockType blockType() const { return m_blockType; }
     69     CSSPrimitiveValue::UnitType unitType() const { return m_unit; }
     70 
     71 private:
     72     MediaQueryTokenType m_type;
     73     String m_value;
     74 
     75     UChar m_delimiter; // Could be rolled into m_value?
     76 
     77     NumericValueType m_numericValueType;
     78     double m_numericValue;
     79     CSSPrimitiveValue::UnitType m_unit;
     80 
     81     BlockType m_blockType;
     82 };
     83 
     84 typedef Vector<MediaQueryToken>::iterator MediaQueryTokenIterator;
     85 
     86 } // namespace
     87 
     88 #endif // MediaQueryToken_h
     89