/*
  Copyright (c) 2005 Rafal Rzepecki <divide@users.sourceforge.net>

  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 INCIDENCEEDITOR_CATEGORYHIERARCHYREADER_H
#define INCIDENCEEDITOR_CATEGORYHIERARCHYREADER_H

#include "incidenceeditors-ng_export.h"

#include <QVariant>

class KComboBox;

class QTreeWidget;
class QTreeWidgetItem;

namespace IncidenceEditorNG {

class INCIDENCEEDITORS_NG_EXPORT CategoryHierarchyReader
{
  public:
    void read( QStringList categories );
    virtual ~CategoryHierarchyReader() {}
    static QStringList path( QString string );

  protected:
    CategoryHierarchyReader() {}
    virtual void clear() = 0;
    virtual void goUp() = 0;
    virtual void addChild( const QString &label, const QVariant &userData = QVariant() ) = 0;
    virtual int depth() const = 0;
};

class INCIDENCEEDITORS_NG_EXPORT CategoryHierarchyReaderQComboBox : public CategoryHierarchyReader
{
  public:
    CategoryHierarchyReaderQComboBox( KComboBox *box ) : mBox( box ), mCurrentDepth( 0 ) {}
    virtual ~CategoryHierarchyReaderQComboBox() {}

  protected:
    virtual void clear();
    virtual void goUp();
    virtual void addChild( const QString &label, const QVariant &userData = QVariant() );
    virtual int depth() const;

  private:
    KComboBox *mBox;
    int mCurrentDepth;
};

#ifndef QT_NO_TREEWIDGET
class INCIDENCEEDITORS_NG_EXPORT CategoryHierarchyReaderQTreeWidget : public CategoryHierarchyReader
{
  public:
    CategoryHierarchyReaderQTreeWidget( QTreeWidget *tree )
      : mTree( tree ), mItem( 0 ), mCurrentDepth( 0 ) {}
    virtual ~CategoryHierarchyReaderQTreeWidget() {}

  protected:
    virtual void clear();
    virtual void goUp();
    virtual void addChild( const QString &label, const QVariant &userData = QVariant() );
    virtual int depth() const;

  private:
    QTreeWidget *mTree;
    QTreeWidgetItem *mItem;
    int mCurrentDepth;
};
#endif

}

#endif
