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1 | #ifndef SCIQLOP_DATASOURCEITEM_H | |
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2 | #define SCIQLOP_DATASOURCEITEM_H | |
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3 | ||
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4 | #include <Common/spimpl.h> | |
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5 | ||
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6 | #include <QVariant> | |
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7 | #include <QVector> | |
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8 | ||
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9 | /** | |
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10 | * @brief The DataSourceItem class aims to represent a structure element of a data source. | |
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11 | * A data source has a tree structure that is made up of a main DataSourceItem object (root) | |
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12 | * containing other DataSourceItem objects (children). | |
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13 | * For each DataSourceItem can be associated a set of data representing it. | |
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14 | */ | |
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15 | class DataSourceItem { | |
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16 | public: | |
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17 | explicit DataSourceItem(QVector<QVariant> data = {}); | |
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18 | ||
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19 | /** | |
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20 | * Adds a child to the item. The item takes ownership of the child. | |
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21 | * @param child the child to add | |
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22 | */ | |
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23 | void appendChild(std::unique_ptr<DataSourceItem> child) noexcept; | |
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24 | ||
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25 | /** | |
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26 | * Returns the item's child associated to an index | |
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27 | * @param childIndex the index to search | |
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28 | * @return a pointer to the child if index is valid, nullptr otherwise | |
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29 | */ | |
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30 | DataSourceItem *child(int childIndex) const noexcept; | |
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31 | ||
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32 | int childCount() const noexcept; | |
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33 | ||
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34 | /** | |
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35 | * Get the data associated to an index | |
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36 | * @param dataIndex the index to search | |
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37 | * @return the data found if index is valid, default QVariant otherwise | |
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38 | */ | |
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39 | QVariant data(int dataIndex) const noexcept; | |
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40 | ||
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41 | /** | |
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42 | * Get the item's parent | |
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43 | * @return a pointer to the parent if it exists, nullptr if the item is a root | |
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44 | */ | |
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45 | DataSourceItem *parentItem() const noexcept; | |
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46 | ||
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47 | private: | |
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48 | class DataSourceItemPrivate; | |
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49 | spimpl::unique_impl_ptr<DataSourceItemPrivate> impl; | |
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50 | }; | |
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51 | ||
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52 | #endif // SCIQLOP_DATASOURCEITEMMODEL_H | |
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1 | #include <DataSource/DataSourceItem.h> | |
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2 | ||
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3 | #include <QVector> | |
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4 | ||
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5 | struct DataSourceItem::DataSourceItemPrivate { | |
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6 | explicit DataSourceItemPrivate(QVector<QVariant> data) | |
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7 | : m_Parent{nullptr}, m_Children{}, m_Data{std::move(data)} | |
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8 | { | |
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9 | } | |
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10 | ||
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11 | DataSourceItem *m_Parent; | |
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12 | std::vector<std::unique_ptr<DataSourceItem> > m_Children; | |
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13 | QVector<QVariant> m_Data; | |
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14 | }; | |
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15 | ||
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16 | DataSourceItem::DataSourceItem(QVector<QVariant> data) | |
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17 | : impl{spimpl::make_unique_impl<DataSourceItemPrivate>(data)} | |
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18 | { | |
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19 | } | |
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20 | ||
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21 | void DataSourceItem::appendChild(std::unique_ptr<DataSourceItem> child) noexcept | |
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22 | { | |
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23 | child->impl->m_Parent = this; | |
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24 | impl->m_Children.push_back(std::move(child)); | |
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25 | } | |
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26 | ||
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27 | DataSourceItem *DataSourceItem::child(int childIndex) const noexcept | |
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28 | { | |
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29 | if (childIndex < 0 || childIndex >= childCount()) { | |
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30 | return nullptr; | |
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31 | } | |
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32 | else { | |
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33 | return impl->m_Children.at(childIndex).get(); | |
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34 | } | |
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35 | } | |
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36 | ||
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37 | int DataSourceItem::childCount() const noexcept | |
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38 | { | |
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39 | return impl->m_Children.size(); | |
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40 | } | |
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41 | ||
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42 | QVariant DataSourceItem::data(int dataIndex) const noexcept | |
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43 | { | |
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44 | return impl->m_Data.value(dataIndex); | |
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45 | } | |
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46 | ||
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47 | DataSourceItem *DataSourceItem::parentItem() const noexcept | |
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48 | { | |
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49 | return impl->m_Parent; | |
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50 | } | |
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