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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CSSGridAutoRepeatValue_h
#define CSSGridAutoRepeatValue_h
#include "core/CSSValueKeywords.h"
#include "core/css/CSSValueList.h"
namespace blink {
// CSSGridAutoRepeatValue stores the track sizes and line numbers when the
// auto-repeat syntax is used
//
// Right now the auto-repeat syntax is as follows:
// <auto-repeat> = repeat( [ auto-fill | auto-fit ], <line-names>? <fixed-size>
// <line-names>? )
//
// meaning that only one fixed size track is allowed. It could be argued that a
// different class storing two CSSGridLineNamesValue and one CSSValue (for the
// track size) fits better but the CSSWG has left the door open to allow more
// than one track in the future. That's why we're using a list, it's prepared
// for future changes and it also allows us to keep the parsing algorithm almost
// intact.
class CSSGridAutoRepeatValue : public CSSValueList {
public:
static CSSGridAutoRepeatValue* Create(CSSValueID id) {
return new CSSGridAutoRepeatValue(id);
}
String CustomCSSText() const;
CSSValueID AutoRepeatID() const { return auto_repeat_id_; }
void TraceAfterDispatch(blink::Visitor* visitor) {
CSSValueList::TraceAfterDispatch(visitor);
}
private:
CSSGridAutoRepeatValue(CSSValueID id)
: CSSValueList(kGridAutoRepeatClass, kSpaceSeparator),
auto_repeat_id_(id) {
DCHECK(id == CSSValueAutoFill || id == CSSValueAutoFit);
}
const CSSValueID auto_repeat_id_;
};
DEFINE_CSS_VALUE_TYPE_CASTS(CSSGridAutoRepeatValue, IsGridAutoRepeatValue());
} // namespace blink
#endif // CSSGridAutoRepeatValue_h