102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
#include "RecentLocationsModel.hxx"
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#include <QSettings>
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#include <QDebug>
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const int MAX_RECENT_LOCATIONS = 20;
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RecentLocationsModel::RecentLocationsModel(QObject* pr) :
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QAbstractListModel(pr)
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{
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QSettings settings;
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m_data = settings.value("recent-location-sets").toList();
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}
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void RecentLocationsModel::saveToSettings()
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{
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QSettings settings;
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settings.setValue("recent-location-sets", m_data);
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}
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QVariantMap RecentLocationsModel::locationAt(int index) const
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{
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return m_data.at(index).toMap();
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}
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bool RecentLocationsModel::isEmpty() const
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{
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return m_data.empty();
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}
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QVariant RecentLocationsModel::data(const QModelIndex &index, int role) const
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{
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const QVariantMap loc = m_data.at(index.row()).toMap();
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if (role == Qt::DisplayRole) {
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return loc.value("text");
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} else if (role == Qt::UserRole) {
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return loc;
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}
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return {};
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}
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int RecentLocationsModel::rowCount(const QModelIndex &parent) const
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{
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return m_data.size();
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}
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QHash<int, QByteArray> RecentLocationsModel::roleNames() const
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{
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QHash<int, QByteArray> result = QAbstractListModel::roleNames();
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result[Qt::DisplayRole] = "display";
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// result[Qt::UserRole] = "uri";
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return result;
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}
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QVariantMap RecentLocationsModel::mostRecent() const
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{
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if (m_data.empty()) {
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return {};
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}
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return m_data.front().toMap();
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}
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void RecentLocationsModel::insert(QVariant location)
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{
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if (location.toMap().isEmpty())
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return;
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QVariant locDesc = location.toMap().value("text");
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auto it = std::find_if(m_data.begin(), m_data.end(),
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[locDesc](QVariant v) { return v.toMap().value("text") == locDesc; });
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if (!m_data.empty() && (it == m_data.begin())) {
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// special, common case - nothing to do
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// we use the description to determine equality,
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// but it doesn't mention altitude/speed/heading so always
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// update the actual stored value
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*it = location;
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return;
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}
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if (it != m_data.end()) {
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int existingIndex = std::distance(m_data.begin(), it);
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beginRemoveRows(QModelIndex(), existingIndex, existingIndex);
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m_data.erase(it);
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endRemoveRows();
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}
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beginInsertRows(QModelIndex(), 0, 0);
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m_data.push_front(location);
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endInsertRows();
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if (m_data.size() > MAX_RECENT_LOCATIONS) {
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beginRemoveRows(QModelIndex(), MAX_RECENT_LOCATIONS, m_data.size() - 1);
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// truncate the data at the correct size
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m_data = m_data.mid(0, MAX_RECENT_LOCATIONS);
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endRemoveRows();
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}
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emit isEmptyChanged();
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}
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