/*
  Copyright (c) 2010 Bertjan Broeksema <broeksema@kde.org>
  Copyright (C) 2010 Klaralvdalens Datakonsult AB, a KDAB Group company <info@kdab.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 COMBINEDINCIDENCEEDITOR_H
#define COMBINEDINCIDENCEEDITOR_H

#include "incidenceeditors-ng_export.h"
#include "incidenceeditor-ng.h"

#include <KMessageWidget>

namespace IncidenceEditorNG {

/**
 * The CombinedIncidenceEditor combines optional widgets with zero or more
 * IncidenceEditors. The CombinedIncidenceEditor keeps track of the dirty state
 * of the IncidenceEditors that where combined.
 */
class INCIDENCEEDITORS_NG_EXPORT CombinedIncidenceEditor : public IncidenceEditor
{
  Q_OBJECT
  public:
    explicit CombinedIncidenceEditor( QWidget *parent = 0 );
    /**
     * Deletes this editor as well as all editors which are combined into this
     * one.
     */
    ~CombinedIncidenceEditor();

    void combine( IncidenceEditor *other );

    /**
     * Returns whether or not the current values in the editor differ from the
     * initial values or if one of the combined editors is dirty.
     */
    virtual bool isDirty() const;
    virtual bool isValid() const;

    /**
     * Loads all data from @param inicidence into the combined editors. Note, if
     * you reimplement the load method in a subclass, make sure to call this
     * implementation too.
     */
    virtual void load( const KCalCore::Incidence::Ptr &incidence );
    virtual void save( const KCalCore::Incidence::Ptr &incidence );

  private Q_SLOTS:
    void handleDirtyStatusChange( bool isDirty );

  Q_SIGNALS:
    void showMessage( const QString &reason, KMessageWidget::MessageType ) const;

  private:
    QVector<IncidenceEditor*> mCombinedEditors;
    int mDirtyEditorCount;
};

}

#endif // COMBINEDINCIDENCEEDITOR_H