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#include <Variable/Variable.h>
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#include <Variable/VariableModel.h>
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#include <Data/IDataSeries.h>
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#include <QDateTime>
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#include <QSize>
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#include <unordered_map>
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Q_LOGGING_CATEGORY(LOG_VariableModel, "VariableModel")
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namespace {
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// Column indexes
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const auto NAME_COLUMN = 0;
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const auto TSTART_COLUMN = 1;
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const auto TEND_COLUMN = 2;
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const auto NB_COLUMNS = 3;
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// Column properties
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const auto DEFAULT_HEIGHT = 25;
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const auto DEFAULT_WIDTH = 100;
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struct ColumnProperties {
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ColumnProperties(const QString &name = {}, int width = DEFAULT_WIDTH,
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int height = DEFAULT_HEIGHT)
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: m_Name{name}, m_Width{width}, m_Height{height}
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{
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}
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QString m_Name;
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int m_Width;
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int m_Height;
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};
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const auto COLUMN_PROPERTIES
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= QHash<int, ColumnProperties>{{NAME_COLUMN, {QObject::tr("Name")}},
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{TSTART_COLUMN, {QObject::tr("tStart"), 180}},
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{TEND_COLUMN, {QObject::tr("tEnd"), 180}}};
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/// Format for datetimes
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const auto DATETIME_FORMAT = QStringLiteral("dd/MM/yyyy \nhh:mm:ss:zzz");
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} // namespace
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struct VariableModel::VariableModelPrivate {
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/// Variables created in SciQlop
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std::vector<std::shared_ptr<Variable> > m_Variables;
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std::unordered_map<std::shared_ptr<Variable>, double> m_VariableToProgress;
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/// Return the row index of the variable. -1 if it's not found
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int indexOfVariable(Variable *variable) const noexcept;
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};
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VariableModel::VariableModel(QObject *parent)
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: QAbstractTableModel{parent}, impl{spimpl::make_unique_impl<VariableModelPrivate>()}
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{
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}
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std::shared_ptr<Variable> VariableModel::createVariable(const QString &name,
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const SqpDateTime &dateTime,
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const QVariantHash &metadata) noexcept
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{
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auto insertIndex = rowCount();
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beginInsertRows({}, insertIndex, insertIndex);
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auto variable = std::make_shared<Variable>(name, dateTime, metadata);
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impl->m_Variables.push_back(variable);
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connect(variable.get(), &Variable::updated, this, &VariableModel::onVariableUpdated);
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endInsertRows();
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return variable;
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}
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void VariableModel::deleteVariable(std::shared_ptr<Variable> variable) noexcept
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{
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if (!variable) {
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qCCritical(LOG_Variable()) << "Can't delete a null variable from the model";
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return;
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}
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// Finds variable in the model
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auto begin = impl->m_Variables.cbegin();
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auto end = impl->m_Variables.cend();
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auto it = std::find(begin, end, variable);
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if (it != end) {
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auto removeIndex = std::distance(begin, it);
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// Deletes variable
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beginRemoveRows({}, removeIndex, removeIndex);
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impl->m_Variables.erase(it);
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endRemoveRows();
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}
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else {
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qCritical(LOG_VariableModel())
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<< tr("Can't delete variable %1 from the model: the variable is not in the model")
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.arg(variable->name());
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}
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// Removes variable from progress map
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impl->m_VariableToProgress.erase(variable);
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}
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std::shared_ptr<Variable> VariableModel::variable(int index) const
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{
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return (index >= 0 && index < impl->m_Variables.size()) ? impl->m_Variables[index] : nullptr;
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}
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void VariableModel::setDataProgress(std::shared_ptr<Variable> variable, double progress)
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{
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if (progress > 0.0) {
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impl->m_VariableToProgress[variable] = progress;
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}
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else {
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impl->m_VariableToProgress.erase(variable);
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}
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auto modelIndex = createIndex(impl->indexOfVariable(variable.get()), NAME_COLUMN);
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emit dataChanged(modelIndex, modelIndex);
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}
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int VariableModel::columnCount(const QModelIndex &parent) const
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{
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Q_UNUSED(parent);
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return NB_COLUMNS;
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}
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int VariableModel::rowCount(const QModelIndex &parent) const
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{
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Q_UNUSED(parent);
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return impl->m_Variables.size();
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}
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QVariant VariableModel::data(const QModelIndex &index, int role) const
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{
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if (!index.isValid()) {
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return QVariant{};
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}
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if (index.row() < 0 || index.row() >= rowCount()) {
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return QVariant{};
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}
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if (role == Qt::DisplayRole) {
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if (auto variable = impl->m_Variables.at(index.row()).get()) {
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/// Lambda function that builds the variant to return for a time value
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auto dateTimeVariant = [](double time) {
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auto dateTime = QDateTime::fromMSecsSinceEpoch(time * 1000.);
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return dateTime.toString(DATETIME_FORMAT);
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};
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switch (index.column()) {
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case NAME_COLUMN:
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return variable->name();
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case TSTART_COLUMN:
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return dateTimeVariant(variable->dateTime().m_TStart);
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case TEND_COLUMN:
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return dateTimeVariant(variable->dateTime().m_TEnd);
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default:
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// No action
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break;
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}
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qWarning(LOG_VariableModel())
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<< tr("Can't get data (unknown column %1)").arg(index.column());
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}
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else {
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qWarning(LOG_VariableModel()) << tr("Can't get data (no variable)");
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}
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}
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else if (role == VariableRoles::ProgressRole) {
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if (auto variable = impl->m_Variables.at(index.row())) {
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auto it = impl->m_VariableToProgress.find(variable);
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if (it != impl->m_VariableToProgress.cend()) {
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return it->second;
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}
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}
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}
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return QVariant{};
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}
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QVariant VariableModel::headerData(int section, Qt::Orientation orientation, int role) const
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{
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if (role != Qt::DisplayRole && role != Qt::SizeHintRole) {
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return QVariant{};
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}
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if (orientation == Qt::Horizontal) {
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auto propertiesIt = COLUMN_PROPERTIES.find(section);
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if (propertiesIt != COLUMN_PROPERTIES.cend()) {
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// Role is either DisplayRole or SizeHintRole
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return (role == Qt::DisplayRole)
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? QVariant{propertiesIt->m_Name}
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: QVariant{QSize{propertiesIt->m_Width, propertiesIt->m_Height}};
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}
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else {
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qWarning(LOG_VariableModel())
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<< tr("Can't get header data (unknown column %1)").arg(section);
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}
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}
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return QVariant{};
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}
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void VariableModel::abortProgress(const QModelIndex &index)
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{
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if (auto variable = impl->m_Variables.at(index.row())) {
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emit abortProgessRequested(variable);
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}
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}
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void VariableModel::onVariableUpdated() noexcept
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{
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// Finds variable that has been updated in the model
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if (auto updatedVariable = dynamic_cast<Variable *>(sender())) {
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auto updatedVariableIndex = impl->indexOfVariable(updatedVariable);
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if (updatedVariableIndex > -1) {
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emit dataChanged(createIndex(updatedVariableIndex, 0),
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createIndex(updatedVariableIndex, columnCount() - 1));
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}
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}
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}
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int VariableModel::VariableModelPrivate::indexOfVariable(Variable *variable) const noexcept
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{
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auto begin = std::cbegin(m_Variables);
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auto end = std::cend(m_Variables);
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auto it
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= std::find_if(begin, end, [variable](const auto &var) { return var.get() == variable; });
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if (it != end) {
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// Gets the index of the variable in the model: we assume here that views have the same
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// order as the model
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return std::distance(begin, it);
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}
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else {
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return -1;
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}
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}
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