117 lines
3.4 KiB
C++
117 lines
3.4 KiB
C++
/* === This file is part of Calamares - <https://calamares.io> ===
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*
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* SPDX-FileCopyrightText: 2014 Aurélien Gâteau <agateau@kde.org>
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* SPDX-FileCopyrightText: 2017 2019, Adriaan de Groot <groot@kde.org>
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* Calamares is Free Software: see the License-Identifier above.
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*
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*/
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#ifndef PARTITIONMODEL_H
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#define PARTITIONMODEL_H
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#include "OsproberEntry.h"
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// Qt
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#include <QAbstractItemModel>
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#include <QMutex>
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class Device;
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class Partition;
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class PartitionNode;
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/**
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* A Qt tree model which exposes the partitions of a device.
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*
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* Its depth is only more than 1 if the device has extended partitions.
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*
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* Note on updating:
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*
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* The Device class does not notify the outside world of changes on the
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* Partition objects it owns. Since a Qt model must notify its views *before*
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* and *after* making changes, it is important to make use of
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* the PartitionModel::ResetHelper class to wrap changes.
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*
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* This is what PartitionCoreModule does when it create jobs.
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*/
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class PartitionModel : public QAbstractItemModel
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{
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Q_OBJECT
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public:
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/**
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* This helper class must be instantiated on the stack *before* making
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* changes to the device represented by this model. It will cause the model
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* to Q_EMIT modelAboutToBeReset() when instantiated and modelReset() when
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* destructed.
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*/
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class ResetHelper
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{
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public:
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ResetHelper( PartitionModel* model );
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~ResetHelper();
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ResetHelper( const ResetHelper& ) = delete;
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ResetHelper& operator=( const ResetHelper& ) = delete;
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private:
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PartitionModel* m_model;
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};
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enum
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{
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// The raw size, as a qlonglong. This is different from the DisplayRole of
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// SizeColumn, which is a human-readable string.
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SizeRole = Qt::UserRole + 1,
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IsFreeSpaceRole,
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IsPartitionNewRole,
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FileSystemLabelRole,
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FileSystemTypeRole,
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PartitionPathRole,
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PartitionPtrRole, // passed as void*, use sparingly
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OsproberNameRole,
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OsproberPathRole,
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OsproberCanBeResizedRole,
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OsproberRawLineRole,
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OsproberHomePartitionPathRole
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};
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enum Column
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{
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NameColumn,
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FileSystemColumn,
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FileSystemLabelColumn,
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MountPointColumn,
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SizeColumn,
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ColumnCount // Must remain last
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};
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PartitionModel( QObject* parent = nullptr );
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/**
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* device must remain alive for the life of PartitionModel
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*/
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void init( Device* device, const OsproberEntryList& osproberEntries );
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// QAbstractItemModel API
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QModelIndex index( int row, int column, const QModelIndex& parent = QModelIndex() ) const override;
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QModelIndex parent( const QModelIndex& child ) const override;
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int columnCount( const QModelIndex& parent = QModelIndex() ) const override;
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int rowCount( const QModelIndex& parent = QModelIndex() ) const override;
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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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Partition* partitionForIndex( const QModelIndex& index ) const;
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Device* device() const { return m_device; }
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void update();
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private:
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friend class ResetHelper;
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Device* m_device;
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OsproberEntryList m_osproberEntries;
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mutable QMutex m_lock;
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};
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#endif /* PARTITIONMODEL_H */
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