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31 #ifndef GridPosition_h
32 #define GridPosition_h
34 #include "wtf/Allocator.h"
35 #include "wtf/text/WTFString.h"
39 enum GridPositionType
{
41 ExplicitPosition
, // [ <integer> || <string> ]
42 SpanPosition
, // span && [ <integer> || <string> ]
43 NamedGridAreaPosition
// <ident>
47 DISALLOW_ALLOCATION();
50 : m_type(AutoPosition
)
51 , m_integerPosition(0)
55 bool isPositive() const { return integerPosition() > 0; }
57 GridPositionType
type() const { return m_type
; }
58 bool isAuto() const { return m_type
== AutoPosition
; }
59 bool isSpan() const { return m_type
== SpanPosition
; }
60 bool isNamedGridArea() const { return m_type
== NamedGridAreaPosition
; }
62 void setExplicitPosition(int position
, const String
& namedGridLine
)
64 m_type
= ExplicitPosition
;
65 m_integerPosition
= position
;
66 m_namedGridLine
= namedGridLine
;
69 void setAutoPosition()
71 m_type
= AutoPosition
;
72 m_integerPosition
= 0;
75 // 'span' values cannot be negative, yet we reuse the <integer> position which can
76 // be. This means that we have to convert the span position to an integer, losing
77 // some precision here. It shouldn't be an issue in practice though.
78 void setSpanPosition(int position
, const String
& namedGridLine
)
80 m_type
= SpanPosition
;
81 m_integerPosition
= position
;
82 m_namedGridLine
= namedGridLine
;
85 void setNamedGridArea(const String
& namedGridArea
)
87 m_type
= NamedGridAreaPosition
;
88 m_namedGridLine
= namedGridArea
;
91 int integerPosition() const
93 ASSERT(type() == ExplicitPosition
);
94 return m_integerPosition
;
97 String
namedGridLine() const
99 ASSERT(type() == ExplicitPosition
|| type() == SpanPosition
|| type() == NamedGridAreaPosition
);
100 return m_namedGridLine
;
103 int spanPosition() const
105 ASSERT(type() == SpanPosition
);
106 return m_integerPosition
;
109 bool operator==(const GridPosition
& other
) const
111 return m_type
== other
.m_type
&& m_integerPosition
== other
.m_integerPosition
&& m_namedGridLine
== other
.m_namedGridLine
;
114 bool shouldBeResolvedAgainstOppositePosition() const
116 return isAuto() || isSpan();
119 GridPositionType m_type
;
120 int m_integerPosition
;
121 String m_namedGridLine
;
126 #endif // GridPosition_h