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/*
* Copyright (C) 2010 Alex Milowski (alex@milowski.com). All rights reserved.
* Copyright (C) 2013 The MathJax Consortium.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RenderMathMLScripts_h
#define RenderMathMLScripts_h
#if ENABLE(MATHML)
#include "RenderMathMLBlock.h"
namespace WebCore {
class RenderMathMLScripts;
class RenderMathMLScriptsWrapper : public RenderMathMLBlock {
friend class RenderMathMLScripts;
public:
enum WrapperType { Base, SubSupPair };
virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) override;
virtual RenderObject* removeChild(RenderObject&) override;
private:
RenderMathMLScriptsWrapper(Document& document, PassRef<RenderStyle> style, WrapperType kind)
: RenderMathMLBlock(document, WTF::move(style))
, m_kind(kind)
{
}
static RenderMathMLScriptsWrapper* createAnonymousWrapper(RenderMathMLScripts* renderObject, WrapperType);
void addChildInternal(bool normalInsertion, RenderObject* child, RenderObject* beforeChild = 0);
RenderObject* removeChildInternal(bool normalRemoval, RenderObject& child);
virtual const char* renderName() const override { return m_kind == Base ? "Base Wrapper" : "SubSupPair Wrapper"; }
virtual bool isRenderMathMLScriptsWrapper() const override final { return true; }
RenderMathMLScripts* parentMathMLScripts();
WrapperType m_kind;
};
RENDER_OBJECT_TYPE_CASTS(RenderMathMLScriptsWrapper, isRenderMathMLScriptsWrapper())
// Render a base with scripts.
class RenderMathMLScripts : public RenderMathMLBlock {
friend class RenderMathMLScriptsWrapper;
public:
RenderMathMLScripts(Element&, PassRef<RenderStyle>);
virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0) override;
virtual RenderObject* removeChild(RenderObject&) override;
virtual RenderMathMLOperator* unembellishedOperator();
virtual int firstLineBaseline() const override;
protected:
virtual void layout();
private:
void addChildInternal(bool normalInsertion, RenderObject* child, RenderObject* beforeChild = 0);
RenderObject* removeChildInternal(bool normalRemoval, RenderObject& child);
virtual bool isRenderMathMLScripts() const override final { return true; }
virtual const char* renderName() const override { return "RenderMathMLScripts"; }
void fixAnonymousStyleForSubSupPair(RenderObject* subSupPair, bool isPostScript);
void fixAnonymousStyles();
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
// Omit our subscript and/or superscript. This may return 0 for a non-MathML base (which
// won't occur in valid MathML).
RenderBoxModelObject* base() const;
enum ScriptsType { Sub, Super, SubSup, Multiscripts };
ScriptsType m_kind;
RenderMathMLScriptsWrapper* m_baseWrapper;
};
RENDER_OBJECT_TYPE_CASTS(RenderMathMLScripts, isRenderMathMLScripts())
}
#endif // ENABLE(MATHML)
#endif // RenderMathMLScripts_h
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