File indexing completed on 2024-05-12 16:01:33

 /*
  *  SPDX-FileCopyrightText: 2011 Dmitry Kazakov <dimula73@gmail.com>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #ifndef __KIS_MODEL_INDEX_CONVERTER_BASE_H
 #define __KIS_MODEL_INDEX_CONVERTER_BASE_H
 
 
 #include <QModelIndex>
 #include "kritaui_export.h"
 class KisNodeDummy;
 
 /**
  * The base class for converting objects to/from QModelIndex used
  * in KisNodeModel and  KisNodeDummy used in KisDummiesFacadeBase
  * (KisShapeController).
  *
  * This is not a trivial task, because the indexing of nodes is
  * reversed in KisNodeModel.
  */
 
 class KRITAUI_EXPORT KisModelIndexConverterBase
 {
 public:
     virtual ~KisModelIndexConverterBase();
 
     /**
      * Returns the dummy staying in the specified \p row of a \p parent
      * May return null in case of inconsistency
      */
     virtual KisNodeDummy* dummyFromRow(int row, QModelIndex parent) = 0;
 
     /**
      * Returns the dummy associated with the \p index
      * WARNING: \p index must be valid
      * \note cannot return null
      */
     virtual KisNodeDummy* dummyFromIndex(QModelIndex index) = 0;
 
     /**
      * Returns the index corresponding to the position of the \p dummy
      * in the model. Will return invalid index if the dummy should be hidden
      */
     virtual QModelIndex indexFromDummy(KisNodeDummy *dummy) = 0;
 
     /**
      * Calculates the parent and the position in the model for newly created dummy
      * \param parentDummy the dummy parent
      * \param index the dummy index
      * \param newNodeMetaObjectType is a class name of a newly added node
      *        This name is got from Qt's meta object system so you must
      *        compare this value against a corresponding staticMetaObject
      *        object only.
      *        We do not pass a pointer to a real node to limit the access to
      *        real nodes.
      * \param parentIndex the parent index
      * \param row the dummy row
      * \return whether the new dummy will be shown in the model
      */
     virtual bool indexFromAddedDummy(KisNodeDummy *parentDummy, int index, const QString &newNodeMetaObjectType, QModelIndex &parentIndex, int &row) = 0;
 
     /**
      * Returns the number of children of the given index of the model
      */
     virtual int rowCount(QModelIndex parent) = 0;
 };
 
 #endif /* __KIS_MODEL_INDEX_CONVERTER_BASE_H */