1/*
2 * Copyright (C) 2021 Tyler Wilcock <twilco.o@protonmail.com>.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "CSSValue.h"
29
30namespace WebCore {
31
32/**
33 * Represents a pair of CSS values.
34 *
35 * Intended to replace Pair.h, which is only capable of containing CSSPrimitiveValues, and is not a sub-class of
36 * CSSValue itself. See https://bugs.webkit.org/show_bug.cgi?id=223204.
37 */
38class CSSValuePair : public CSSValue {
39public:
40 enum class IdenticalValueEncoding : uint8_t {
41 DoNotCoalesce,
42 Coalesce
43 };
44
45 static Ref<CSSValuePair> create(Ref<CSSValue>&& first, Ref<CSSValue>&& second, ValueSeparator separator)
46 {
47 return adoptRef(*new CSSValuePair(WTFMove(first), WTFMove(second), separator));
48 }
49 static Ref<CSSValuePair> create(Ref<CSSValue>&& first, Ref<CSSValue>&& second, ValueSeparator separator, IdenticalValueEncoding encoding)
50 {
51 return adoptRef(*new CSSValuePair(WTFMove(first), WTFMove(second), separator, encoding));
52 }
53
54 Ref<CSSValue> first() const { return m_first; }
55 Ref<CSSValue> second() const { return m_second; }
56
57 String customCSSText() const;
58 bool equals(const CSSValuePair& other) const;
59
60private:
61 explicit CSSValuePair(Ref<CSSValue>&& first, Ref<CSSValue>&& second, ValueSeparator separator)
62 : CSSValue(ValuePairClass)
63 , m_first(WTFMove(first))
64 , m_second(WTFMove(second))
65 {
66 m_valueSeparator = separator;
67 }
68
69 explicit CSSValuePair(Ref<CSSValue>&& first, Ref<CSSValue>&& second, ValueSeparator separator, IdenticalValueEncoding encoding)
70 : CSSValue(ValuePairClass)
71 , m_encoding(encoding)
72 , m_first(WTFMove(first))
73 , m_second(WTFMove(second))
74 {
75 m_valueSeparator = separator;
76 }
77
78 IdenticalValueEncoding m_encoding { IdenticalValueEncoding::Coalesce };
79 Ref<CSSValue> m_first;
80 Ref<CSSValue> m_second;
81};
82
83} // namespace WebCore
84
85SPECIALIZE_TYPE_TRAITS_CSS_VALUE(CSSValuePair, isValuePair())