File indexing completed on 2024-06-02 05:15:47 

0001 /*
0002     This file is part of Akonadi Contact.
0003 
0004     SPDX-FileCopyrightText: 2010 KDAB
0005     SPDX-FileContributor: Tobias Koenig <tokoe@kde.org>
0006 
0007     SPDX-License-Identifier: LGPL-2.0-or-later
0008 */
0009 
0010 #pragma once
0011 
0012 #include "akonadi-contact-core_export.h"
0013 #include <QSortFilterProxyModel>
0014 
0015 #include <memory>
0016 
0017 namespace Akonadi
0018 {
0019 class LeafExtensionProxyModelPrivate;
0020 
0021 class AKONADI_CONTACT_CORE_EXPORT LeafExtensionProxyModel : public QSortFilterProxyModel
0022 {
0023     Q_OBJECT
0024 
0025 public:
0026     explicit LeafExtensionProxyModel(QObject *parent = nullptr);
0027     ~LeafExtensionProxyModel() override;
0028 
0029     QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
0030     QModelIndex parent(const QModelIndex &index) const override;
0031     int rowCount(const QModelIndex &index) const override;
0032     int columnCount(const QModelIndex &index) const override;
0033 
0034     QVariant data(const QModelIndex &proxyIndex, int role = Qt::DisplayRole) const override;
0035     Qt::ItemFlags flags(const QModelIndex &index) const override;
0036     bool setData(const QModelIndex &index, const QVariant &data, int role = Qt::EditRole) override;
0037     bool hasChildren(const QModelIndex &parent = QModelIndex()) const override;
0038     QModelIndex buddy(const QModelIndex &index) const override;
0039     void fetchMore(const QModelIndex &index) override;
0040 
0041     void setSourceModel(QAbstractItemModel *sourceModel) override;
0042 
0043 protected:
0044     /**
0045      * This method is called to retrieve the row count for the given leaf @p index.
0046      */
0047     virtual int leafRowCount(const QModelIndex &index) const = 0;
0048 
0049     /**
0050      * This method is called to retrieve the column count for the given leaf @p index.
0051      */
0052     virtual int leafColumnCount(const QModelIndex &index) const = 0;
0053 
0054     /**
0055      * This method is called to retrieve the data of the child of the given leaf @p index
0056      * at @p row and @p column with the given @p role.
0057      */
0058     virtual QVariant leafData(const QModelIndex &index, int row, int column, int role = Qt::DisplayRole) const = 0;
0059 
0060 private:
0061     //@cond PRIVATE
0062     std::unique_ptr<LeafExtensionProxyModelPrivate> const d;
0063 
0064     Q_PRIVATE_SLOT(d, void sourceRowsInserted(const QModelIndex &, int, int))
0065     Q_PRIVATE_SLOT(d, void sourceRowsRemoved(const QModelIndex &, int, int))
0066     //@endcond
0067 };
0068 }