model.cpp Example File

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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;
  }