Method applyChanges

plugins/timertop/timermodel.cpp:636–719

}

void TimerModel::applyChanges(const TimerIdInfoContainer &changes)
{
    QSet<TimerId> updatedIds;
    QVector<QPair<int, int>> dataChangedRanges; // pair of first/last

    // Update QQmlTimer / QTimer entries
    for (int i = 0; i < m_sourceModel->rowCount(); ++i) {
        const QModelIndex sourceIndex = m_sourceModel->index(i, 0);
        QObject *const timerObject = sourceIndex.data(ObjectModel::ObjectRole).value<QObject *>();

        // The object might have already be deleted even if our index is valid
        if (!timerObject)
            return;

        const TimerId id(timerObject);
        const auto cit = changes.constFind(id);
        auto it = m_timersInfo.find(id);

        if (it == m_timersInfo.end()) {
            it = m_timersInfo.insert(id, TimerIdInfo());

            if (cit == changes.constEnd())
                // safe, validated by the source model
                it.value().update(id);
        }

        if (cit != changes.constEnd()) {
            updatedIds << id;
            it.value() = cit.value();

            if (dataChangedRanges.isEmpty() || dataChangedRanges.last().second != i - 1) {
                dataChangedRanges << qMakePair(i, i);
            } else {
                dataChangedRanges.last().second = i;
            }
        }
    }

    // Update existing free timers entries
    for (auto it = m_freeTimersInfo.begin(), end = m_freeTimersInfo.end(); it != end; ++it) {
        const TimerId id((*it).timerId, (*it).lastReceiverAddress);
        const auto cit = changes.constFind(id);

        if (cit != changes.constEnd()) {
            const int i = m_sourceModel->rowCount() + std::distance(m_freeTimersInfo.begin(), it);
            updatedIds << id;
            (*it) = cit.value();

            if (dataChangedRanges.isEmpty() || dataChangedRanges.last().second != i - 1) {
                dataChangedRanges << qMakePair(i, i);
            } else {
                dataChangedRanges.last().second = i;
            }
        }
    }

    // Fill new free timers to insert
    QVector<TimerIdInfo> freeTimersToInsert;