pqCustomFilterDefinitionModel.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
// SPDX-License-Identifier: BSD-3-Clause

#ifndef pqCustomFilterDefinitionModel_h
#define pqCustomFilterDefinitionModel_h

#include "pqComponentsModule.h"
#include <QAbstractItemModel>

#include "pqProxySelection.h" // for pqProxySelection.

class pqCustomFilterDefinitionModelItem;
class pqPipelineSource;
class QPixmap;
class vtkCollection;

class PQCOMPONENTS_EXPORT pqCustomFilterDefinitionModel : public QAbstractItemModel
{
public:
  enum ItemType
  {
    Invalid = -1,
    Source = 0,
    Filter,
    CustomFilter,
    Link,
    LastType = Link
  };

  pqCustomFilterDefinitionModel(QObject* parent = nullptr);
  ~pqCustomFilterDefinitionModel() override;


  int rowCount(const QModelIndex& parent = QModelIndex()) const override;

  int columnCount(const QModelIndex& parent = QModelIndex()) const override;

  bool hasChildren(const QModelIndex& parent = QModelIndex()) const override;

  QModelIndex index(int row, int column, const QModelIndex& parent = QModelIndex()) const override;

  QModelIndex parent(const QModelIndex& index) const override;

  QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;

  Qt::ItemFlags flags(const QModelIndex& index) const override;

  void setContents(const pqProxySelection& items);

  QModelIndex getNextIndex(const QModelIndex& index) const;

  pqPipelineSource* getSourceFor(const QModelIndex& index) const;

private:
  pqCustomFilterDefinitionModelItem* getModelItemFor(const QModelIndex& index) const;

  pqCustomFilterDefinitionModelItem* getNextItem(pqCustomFilterDefinitionModelItem* item) const;

  pqCustomFilterDefinitionModelItem* Root; 
  QPixmap* PixmapList;                     
};

#endif