1/*
2 * Copyright (C) 2016 Igalia S.L. All rights reserved.
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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
15 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
16 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
17 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
19 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY 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#if ENABLE(MATHML)
29
30#include "MathMLOperatorDictionary.h"
31#include "MathMLOperatorElement.h"
32#include "RenderMathMLOperator.h"
33
34namespace WebCore {
35
36class RenderMathMLFencedOperator final : public RenderMathMLOperator {
37 WTF_MAKE_ISO_ALLOCATED(RenderMathMLFencedOperator);
38public:
39 RenderMathMLFencedOperator(Document&, RenderStyle&&, const String& operatorString, MathMLOperatorDictionary::Form, unsigned short flags = 0);
40 void updateOperatorContent(const String&);
41
42private:
43 bool isRenderMathMLFencedOperator() const final { return true; }
44 bool isVertical() const final { return m_operatorChar.isVertical; }
45 UChar32 textContent() const final { return m_operatorChar.character; }
46 LayoutUnit leadingSpace() const final;
47 LayoutUnit trailingSpace() const final;
48
49 // minsize always has the default value "1em".
50 LayoutUnit minSize() const final { return style().fontCascade().size(); }
51
52 // maxsize always has the default value "infinity".
53 LayoutUnit maxSize() const final { return intMaxForLayoutUnit; }
54
55 bool hasOperatorFlag(MathMLOperatorDictionary::Flag flag) const final { return m_operatorFlags & flag; }
56
57 // We always use the MathOperator class for anonymous mfenced operators, since they do not have text content in the DOM.
58 bool useMathOperator() const final { return true; }
59
60 MathMLOperatorElement::OperatorChar m_operatorChar;
61 unsigned short m_leadingSpaceInMathUnit;
62 unsigned short m_trailingSpaceInMathUnit;
63 MathMLOperatorDictionary::Form m_operatorForm;
64 unsigned short m_operatorFlags;
65};
66
67}; // namespace WebCore
68
69SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderMathMLFencedOperator, isRenderMathMLFencedOperator())
70
71#endif // ENABLE(MATHML)
72