Qt 5.11 | Qt Quick | Models and Views: AbstractItemModel Example | model.cpp Example File

Qt 5.11.3 Reference Documentation

# model.cpp Example File

models/abstractitemmodel/model.cpp

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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;
      }