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85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#ifndef COLUMNSORTPROXYMODEL_H
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#define COLUMNSORTPROXYMODEL_H
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#if !defined(Q_MOC_RUN)
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#include <QAbstractProxyModel>
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#include <QVector>
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#endif
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class ColumnGroupProxyModel;
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/*!
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\brief Proxy model used to sort on multiple columns
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It's using a stable sort to sort on multiple columns.
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Every time a value is changed (on one of the sorted columns), it will resort everything.
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THis model does not work with tree models!
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*/
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class ColumnSortProxyModel
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: public QAbstractProxyModel
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{
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Q_OBJECT
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public:
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ColumnSortProxyModel(QObject* parent = nullptr);
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~ColumnSortProxyModel();
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QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override;
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QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
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int rowCount(const QModelIndex& index = QModelIndex()) const override;
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int columnCount(const QModelIndex& index = QModelIndex()) const override;
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QModelIndex index(int row, int column, const QModelIndex& parent = QModelIndex()) const override;
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QModelIndex parent(const QModelIndex& index) const override;
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QModelIndex mapFromSource(const QModelIndex& sourceIndex) const override;
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QModelIndex mapToSource(const QModelIndex& proxyIndex) const override;
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void setSourceModel(QAbstractItemModel* sourceModel) override;
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void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;
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void AddColumn(int column, Qt::SortOrder order = Qt::AscendingOrder);
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void RemoveColumn(int column);
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void SetColumns(const QVector<int>& columns);
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void ClearColumns();
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bool IsColumnSorted(int col) const;
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Qt::SortOrder SortOrder(int col) const;
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signals:
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void SortChanged();
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private:
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friend class ColumnGroupProxyModel;
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void AddColumnWithoutSorting(int column, Qt::SortOrder order = Qt::AscendingOrder);
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void RemoveColumnWithoutSorting(int column);
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private slots:
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void SortModel();
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void SourceDataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight);
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private:
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struct Column
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{
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int column;
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Qt::SortOrder sortOrder;
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};
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int ColumnContains(int col) const;
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QVector<Column> m_columns;
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QVector<int> m_mappingToSource;
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};
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#endif //COLUMNSORTPROXYMODEL_H
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