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140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
/*
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SPDX-FileCopyrightText: 2014 Eike Hein <hein@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef POSITIONER_H
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#define POSITIONER_H
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#include <QAbstractItemModel>
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#include "folderplugin_private_export.h"
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class FolderModel;
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class QTimer;
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class FOLDERPLUGIN_TESTS_EXPORT Positioner : public QAbstractItemModel
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{
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Q_OBJECT
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Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
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Q_PROPERTY(FolderModel *folderModel READ folderModel WRITE setFolderModel NOTIFY folderModelChanged)
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Q_PROPERTY(int perStripe READ perStripe WRITE setPerStripe NOTIFY perStripeChanged)
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Q_PROPERTY(QStringList positions READ positions WRITE setPositions NOTIFY positionsChanged)
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public:
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explicit Positioner(QObject *parent = nullptr);
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~Positioner() override;
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bool enabled() const;
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void setEnabled(bool enabled);
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FolderModel *folderModel() const;
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void setFolderModel(QObject *folderModel);
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int perStripe() const;
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void setPerStripe(int perStripe);
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QStringList positions() const;
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void setPositions(const QStringList &positions);
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Q_INVOKABLE int map(int row) const;
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Q_INVOKABLE int nearestItem(int currentIndex, Qt::ArrowType direction);
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Q_INVOKABLE bool isBlank(int row) const;
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Q_INVOKABLE int indexForUrl(const QUrl &url) const;
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Q_INVOKABLE void setRangeSelected(int anchor, int to);
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Q_INVOKABLE void reset();
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/**
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* Performs the move operation in the underlying model.
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*
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* @param moves List of indexes that were moved. Two
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* consecutive entries correspond to the
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* from and to position.
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*
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* @return The lowest index that was moved. Used to
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* determine the first selected item.
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*/
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Q_INVOKABLE int move(const QVariantList &moves);
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QHash<int, QByteArray> roleNames() 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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QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
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int rowCount(const QModelIndex &parent = QModelIndex()) const override;
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int columnCount(const QModelIndex &parent = QModelIndex()) const override;
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#ifdef BUILD_TESTING
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QHash<int, int> proxyToSourceMapping() const
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{
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return m_proxyToSource;
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}
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QHash<int, int> sourceToProxyMapping() const
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{
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return m_sourceToProxy;
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}
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#endif
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Q_SIGNALS:
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void enabledChanged() const;
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void folderModelChanged() const;
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void perStripeChanged() const;
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void positionsChanged() const;
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private Q_SLOTS:
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void updatePositions();
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void sourceStatusChanged();
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void sourceDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles);
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void sourceModelAboutToBeReset();
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void sourceModelReset();
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void sourceRowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
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void sourceRowsAboutToBeMoved(const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow);
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void sourceRowsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
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void sourceLayoutAboutToBeChanged(const QList<QPersistentModelIndex> &parents, QAbstractItemModel::LayoutChangeHint hint);
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void sourceRowsInserted(const QModelIndex &parent, int first, int last);
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void sourceRowsMoved(const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow);
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void sourceRowsRemoved(const QModelIndex &parent, int first, int last);
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void sourceLayoutChanged(const QList<QPersistentModelIndex> &parents, QAbstractItemModel::LayoutChangeHint hint);
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private:
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void initMaps(int size = -1);
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void updateMaps(int proxyIndex, int sourceIndex);
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int firstRow() const;
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int lastRow() const;
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int firstFreeRow() const;
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void applyPositions();
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void flushPendingChanges();
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void connectSignals(FolderModel *model);
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void disconnectSignals(FolderModel *model);
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bool m_enabled;
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FolderModel *m_folderModel;
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int m_perStripe;
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int m_lastRow;
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QModelIndexList m_pendingChanges;
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bool m_ignoreNextTransaction;
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QStringList m_positions;
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bool m_deferApplyPositions;
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QVariantList m_deferMovePositions;
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QTimer *const m_updatePositionsTimer;
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QHash<int, int> m_proxyToSource;
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QHash<int, int> m_sourceToProxy;
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bool m_beginInsertRowsCalled = false; // used to sync the amount of begin/endInsertRows calls
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};
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#endif
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