/****************************************************************************
**
** Copyright (C) 1992-2004 Trolltech AS. All rights reserved.
**
** This file is part of the designer application of the Qt Toolkit.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QPROPERTYEDITOR_MODEL_P_H
#define QPROPERTYEDITOR_MODEL_P_H

#include "qpropertyeditor_items_p.h"
#include <qabstractitemmodel.h>

namespace QPropertyEditor
{

class Model: public QAbstractItemModel
{
    Q_OBJECT
public:
    Model(QObject *parent = 0);
    ~Model();

    inline IProperty *initialInput() const
    { return m_initialInput; }

    inline QModelIndex indexOf(IProperty *property, int column = 0) const
    {
        if (property == m_initialInput)
            return createIndex(0, column, m_initialInput);

        IProperty *parent = parentOf(property);
        if (!parent || parent->kind() != IProperty::Property_Group)
            return QModelIndex();

        int row = static_cast<IPropertyGroup*>(parent)->indexOf(property);
        return createIndex(row, column, property);
    }

    inline IProperty *privateData(const QModelIndex &index) const
    { return static_cast<IProperty*>(index.data()); }

    ItemFlags flags(const QModelIndex &index) const;

signals:
    void propertyChanged(IProperty *property);

public slots:
    void setInitialInput(IProperty *initialInput);
    void propertyAdded(IProperty *property);
    void propertyRemoved(const QModelIndex &index);
    void refresh(IProperty *property);
    void refresh();

public:
//
// QAbstractItemModel interface
//
    virtual QModelIndex index(int row, int column, const QModelIndex &parent) const;

    virtual QModelIndex parent(const QModelIndex &index) const;

    virtual int rowCount(const QModelIndex &parent) const;
    virtual int columnCount(const QModelIndex &parent) const;
    virtual bool hasChildren(const QModelIndex &parent) const
    { return rowCount(parent) > 0; }

    virtual QVariant data(const QModelIndex &index, int role) const;
    virtual bool setData(const QModelIndex &index, const QVariant &value, int role);

    virtual bool isEditable(const QModelIndex &index) const;
    virtual QModelIndex buddy(const QModelIndex &index) const;

    virtual QVariant headerData(int section, Qt::Orientation orientation, int role) const;

protected:
    QString columnText(int column) const;

    inline IProperty *childAt(IProperty *parent, int pos) const
    {
        if (parent && parent->kind() == IProperty::Property_Group)
            return static_cast<IPropertyGroup*>(parent)->propertyAt(pos);

        return 0;
    }

    inline IProperty *parentOf(IProperty *property) const
    { return property ? property->parent() : 0; }

    static IPropertyGroup *toPropertyGroup(IProperty *property)
    {
        if (!property || property->kind() != IProperty::Property_Group)
            return 0;

        return static_cast<IPropertyGroup*>(property);
    }

private:
    IProperty *m_initialInput;
};

} // namespace QPropertyEditor

#endif // QPROPERTYEDITOR_MODEL_P_H
