ObjectItemModelBase.h

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/****************************************************************************
 *
 * (c) 2009-2024 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/
 
#pragma once
 
#include <QtCore/QAbstractItemModel>
#include <QtQmlIntegration/QtQmlIntegration>
 
class ObjectItemModelBase : public QAbstractItemModel
{
    Q_OBJECT
 
public:
    explicit ObjectItemModelBase(QObject* parent = nullptr);
    ~ObjectItemModelBase() override;
 
    Q_PROPERTY(int count READ count NOTIFY countChanged)
    Q_PROPERTY(bool dirty READ dirty WRITE setDirty NOTIFY dirtyChanged)
 
    bool dirty() const { return _dirty; }
 
    void beginResetModel();
 
    void endResetModel();
 
    virtual int count() const = 0;
    virtual bool isEmpty() const { return (count() == 0); }
    virtual void setDirty(bool dirty) = 0;
    virtual void clear() = 0;
 
signals:
    void countChanged(int count);
    void dirtyChanged(bool dirty);
 
protected slots:
    void _childDirtyChanged(bool dirty);
 
protected:
    QHash<int, QByteArray> roleNames() const override;
    void _signalCountChangedIfNotNested();
 
    bool _dirty = false;
    uint _resetModelNestingCount = 0;
 
    static constexpr int ObjectRole = Qt::UserRole;
    static constexpr int TextRole = Qt::UserRole + 1;
};