89 lines
2 KiB
C++
89 lines
2 KiB
C++
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#include "ModelDataExtractor.hxx"
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#include <QAbstractItemModel>
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ModelDataExtractor::ModelDataExtractor(QObject *parent) : QObject(parent)
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{
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}
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QVariant ModelDataExtractor::data() const
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{
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if (m_model) {
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QModelIndex m = m_model->index(m_index, 0);
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if (!m.isValid())
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return {};
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int role = Qt::DisplayRole;
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if (!m_role.isEmpty()) {
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const auto& names = m_model->roleNames();
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role = names.key(m_role.toUtf8(), Qt::DisplayRole);
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}
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return m_model->data(m, role);
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}
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if (m_value.isArray()) {
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return m_value.property(m_index).toVariant();
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}
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return {};
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}
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void ModelDataExtractor::setModel(QJSValue model)
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{
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if (m_value.equals(model))
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return;
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if (m_model) {
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// disconnect from everything
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disconnect(m_model, nullptr, this, nullptr);
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m_model = nullptr;
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}
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m_value = model;
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if (m_value.isQObject()) {
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m_model = qobject_cast<QAbstractItemModel*>(m_value.toQObject());
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if (m_model) {
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connect(m_model, &QAbstractItemModel::modelReset,
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this, &ModelDataExtractor::dataChanged);
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connect(m_model, &QAbstractItemModel::dataChanged,
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this, &ModelDataExtractor::onDataChanged);
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// ToDo: handle rows added / removed
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}
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} else {
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// might be null, or an array
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}
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emit modelChanged();
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emit dataChanged();
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}
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void ModelDataExtractor::setIndex(int index)
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{
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if (m_index == index)
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return;
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m_index = index;
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emit indexChanged(m_index);
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emit dataChanged();
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}
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void ModelDataExtractor::setRole(QString role)
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{
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if (m_role == role)
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return;
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m_role = role;
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emit roleChanged(m_role);
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emit dataChanged();
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}
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void ModelDataExtractor::onDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
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{
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if ((topLeft.row() >= m_index) && (bottomRight.row() <= m_index)) {
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emit dataChanged();
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}
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}
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