model.cpp Example File | Qt Quick 5.5

- Qt 5.5
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- Models and Views: AbstractItemModel Example
- model.cpp Example File
- Qt 5.5.1 Reference Documentation

# model.cpp Example File

models/abstractitemmodel/model.cpp

    /****************************************************************************
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    ** This file is part of the examples of the Qt Toolkit.
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    #include "model.h"

    Animal::Animal(const QString &type, const QString &size)
        : m_type(type), m_size(size)
    {
    }

    QString Animal::type() const
    {
        return m_type;
    }

    QString Animal::size() const
    {
        return m_size;
    }

    AnimalModel::AnimalModel(QObject *parent)
        : QAbstractListModel(parent)
    {
    }

    void AnimalModel::addAnimal(const Animal &animal)
    {
        beginInsertRows(QModelIndex(), rowCount(), rowCount());
        m_animals << animal;
        endInsertRows();
    }

    int AnimalModel::rowCount(const QModelIndex & parent) const {
        Q_UNUSED(parent);
        return m_animals.count();
    }

    QVariant AnimalModel::data(const QModelIndex & index, int role) const {
        if (index.row() < 0 || index.row() >= m_animals.count())
            return QVariant();

        const Animal &animal = m_animals[index.row()];
        if (role == TypeRole)
            return animal.type();
        else if (role == SizeRole)
            return animal.size();
        return QVariant();
    }

    QHash<int, QByteArray> AnimalModel::roleNames() const {
        QHash<int, QByteArray> roles;
        roles[TypeRole] = "type";
        roles[SizeRole] = "size";
        return roles;
    }