tablemodel.cpp Example File

itemviews/addressbook/tablemodel.cpp
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#include "tablemodel.h" TableModel::TableModel(QObject *parent) : QAbstractTableModel(parent) { } TableModel::TableModel(QList<Contact> contacts, QObject *parent) : QAbstractTableModel(parent) , contacts(contacts) { } int TableModel::rowCount(const QModelIndex &parent) const { Q_UNUSED(parent); return contacts.size(); } int TableModel::columnCount(const QModelIndex &parent) const { Q_UNUSED(parent); return 2; } QVariant TableModel::data(const QModelIndex &index, int role) const { if (!index.isValid()) return QVariant(); if (index.row() >= contacts.size() || index.row() < 0) return QVariant(); if (role == Qt::DisplayRole) { const auto &contact = contacts.at(index.row()); if (index.column() == 0) return contact.name; else if (index.column() == 1) return contact.address; } return QVariant(); } QVariant TableModel::headerData(int section, Qt::Orientation orientation, int role) const { if (role != Qt::DisplayRole) return QVariant(); if (orientation == Qt::Horizontal) { switch (section) { case 0: return tr("Name"); case 1: return tr("Address"); default: return QVariant(); } } return QVariant(); } bool TableModel::insertRows(int position, int rows, const QModelIndex &index) { Q_UNUSED(index); beginInsertRows(QModelIndex(), position, position + rows - 1); for (int row = 0; row < rows; ++row) contacts.insert(position, { QString(), QString() }); endInsertRows(); return true; } bool TableModel::removeRows(int position, int rows, const QModelIndex &index) { Q_UNUSED(index); beginRemoveRows(QModelIndex(), position, position + rows - 1); for (int row = 0; row < rows; ++row) contacts.removeAt(position); endRemoveRows(); return true; } bool TableModel::setData(const QModelIndex &index, const QVariant &value, int role) { if (index.isValid() && role == Qt::EditRole) { int row = index.row(); auto contact = contacts.value(row); if (index.column() == 0) contact.name = value.toString(); else if (index.column() == 1) contact.address = value.toString(); else return false; contacts.replace(row, contact); emit dataChanged(index, index, {role}); return true; } return false; } Qt::ItemFlags TableModel::flags(const QModelIndex &index) const { if (!index.isValid()) return Qt::ItemIsEnabled; return QAbstractTableModel::flags(index) | Qt::ItemIsEditable; } QList<Contact> TableModel::getContacts() const { return contacts; }