126 lines
5.1 KiB
C++
126 lines
5.1 KiB
C++
/***************************************************************************
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* Copyright (C) 2014 by Eike Hein <hein@kde.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
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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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class FolderModel;
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class QTimer;
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class 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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Q_INVOKABLE void 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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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 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 *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 // POSITIONER_H
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