/* This file is part of the KDE project
   Copyright (C) 2001 Andrea Rizzi <rizzi@kde.org>
   Copyright (C) 2001 Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.de>
   Copyright (C) 2006 Martin Pfeiffer <hubipete@gmx.net>
   Copyright (C) 2006 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
                 2009 Jeremias Epperlein <jeeree@web.de>

   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 TABLEROWELEMENT_H
#define TABLEROWELEMENT_H

#include "BasicElement.h"
#include "AttributeManager.h"
#include "kformula_export.h"

class TableDataElement;

/**
 * @short Representing the MathML mtr element.
 *
 * Each row is responsible for painting the rowline which is placed over its content.
 * For layouting each row in a table will query a list of height and width values
 * from the parental TableElement which can determine these without hussel.
 */
class KOFORMULA_EXPORT TableRowElement : public BasicElement {
public:
    /// The standard constructor
    TableRowElement( BasicElement* parent = 0 );

    /// The standard destructor
    ~TableRowElement();

    /**
     * Render the element to the given QPainter
     * @param painter The QPainter to paint the element to
     * @param am AttributeManager containing style info
     */
    void paint( QPainter& painter, AttributeManager* am );

    /**
     * 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 );

    /**
     * Obtain a list of all child elements of this element
     * @return a QList with pointers to all child elements
     */
    const QList<BasicElement*> childElements() const;
 
    /**
     * Insert a new child at the cursor position
     * @param cursor The cursor holding the position where to inser
     * @param child A BasicElement to insert
     */
    bool insertChild( int position, BasicElement* child );
    
    /**
     * Remove a child element
     * @param element The BasicElement to remove
     */ 
    bool removeChild( BasicElement* child );

    /**
     * Implement the cursor behaviour for the element
     * @param direction Indicates whether the cursor moves up, down, right or left
     * @return A this pointer if the element accepts if not the element to asked instead
     */
    bool acceptCursor( const FormulaCursor& cursor );
    
    /// inherited from BasicElement
    virtual int positionOfChild(BasicElement* child) const;
    
    /// inherited from BasicElement
    virtual int endPosition() const;
    
    /// inherited from BasicElement
    virtual bool moveCursor(FormulaCursor& newcursor, FormulaCursor& oldcursor);
    
    /// inherited from BasicElement
    virtual bool setCursorTo(FormulaCursor& cursor, QPointF point);
    
    /// inherited from BasicElement
    virtual QLineF cursorLine ( int position ) const;
    
    /// @return The element's ElementType
    ElementType elementType() const;

protected:
    /// Read all content from the node - reimplemented by child elements
    bool readMathMLContent( const KoXmlElement& element );

    /// Write all content to the KoXmlWriter - reimplemented by the child elements
    void writeMathMLContent( KoXmlWriter* writer, const QString& ns ) const;

private:
    /// @return A list of alignments in @p orientation for each element of the table
    QList<Align> alignments( Qt::Orientation orientation );

    /// The list of entries in this row of the table 
    QList<TableDataElement*> m_data;
};

#endif

