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/* This file is part of the KDE project
Copyright (C) 2001 Andrea Rizzi <rizzi@kde.org>
Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.de>
Copyright (C) 2006 Martin Pfeiffer <hubipete@gmx.net>
Copyright (C) 2006-2007 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef UNKNOWNELEMENT_H
#define UNKNOWNELEMENT_H
#include "BasicElement.h"
#include "koformula_export.h"
#include <QPainterPath>
class FormulaCursor;
/**
* @short Implementation of an unknown element.
*
* Used when we see a tag that we do not recognise. This element draws nothing, takes up
* no space, and ignores any calls to insert children etc.
*/
class KOFORMULA_EXPORT UnknownElement : public BasicElement {
public:
/// The standard constructor
explicit UnknownElement(BasicElement *parent = 0);
/// The standard destructor
~UnknownElement() override;
/**
* Obtain a list of all child elements of this element
* @return a QList with pointers to all child elements
*/
const QList< BasicElement* > childElements() const override;
/**
* Remove a child element
* @param element The BasicElement to remove
*/
//void removeChild( BasicElement* element );
/**
* Render the element to the given QPainter
* @param painter The QPainter to paint the element to
* @param am The AttributeManager providing information about attributes values
*/
void paint( QPainter& painter, AttributeManager* am ) override;
/**
* Calculate the size of the element and the positions of its children
* @param am The AttributeManager providing information about attributes values
*/
void layout( const AttributeManager* am ) override;
/// inherited from BasicElement
bool acceptCursor ( const FormulaCursor& cursor ) override;
/// @return The element's ElementType
ElementType elementType() const override;
protected:
/// Read all attributes - reimplemented from BasicElement
bool readMathMLAttributes( const KoXmlElement& element ) override;
/// Read root contents - reimplemented from BasicElement
bool readMathMLContent( const KoXmlElement& element ) override;
/// Write element attributes - reimplemented from BasicElement
void writeMathMLAttributes( KoXmlWriter* writer ) const override;
/// Write root contents - reimplemented from BasicElement
void writeMathMLContent( KoXmlWriter* writer, const QString& ns ) const override;
private:
};
#endif // UNKNOWNELEMENT_H
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