88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
#ifndef FEEDSMODEL_H
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#define FEEDSMODEL_H
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#include <QAbstractItemModel>
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#include <QIcon>
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class FeedsModelRootItem;
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class FeedsModelCategory;
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class FeedsModelFeed;
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typedef QList<QPair<int, FeedsModelCategory*> > CategoryAssignment;
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typedef QPair<int, FeedsModelCategory*> CategoryAssignmentItem;
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typedef QList<QPair<int, FeedsModelFeed*> > FeedAssignment;
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typedef QPair<int, FeedsModelFeed*> FeedAssignmentItem;
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class FeedsModel : public QAbstractItemModel {
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Q_OBJECT
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public:
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// Constructors and destructors.
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explicit FeedsModel(QObject *parent = 0);
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virtual ~FeedsModel();
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// Model implementation.
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QVariant data(const QModelIndex &index, int role) const;
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QVariant headerData(int section, Qt::Orientation orientation, int role) const;
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QModelIndex index(int row, int column, const QModelIndex &parent) const;
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QModelIndex parent(const QModelIndex &child) const;
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int columnCount(const QModelIndex &parent) const;
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int rowCount(const QModelIndex &parent) const;
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// Returns all categories, each pair
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// consists of ID of parent item and pointer to category.
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QHash<int, FeedsModelCategory*> getAllCategories();
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// Returns categories from the subtree with given root node, each pair
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// consists of ID of parent item and pointer to category.
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QHash<int, FeedsModelCategory*> getCategories(FeedsModelRootItem *root);
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// Returns list of all feeds contained in the model.
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QList<FeedsModelFeed*> getAllFeeds();
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// Get list of feeds from tree with particular item
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// as root. If root itself is a feed, then it is returned.
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QList<FeedsModelFeed*> getFeeds(FeedsModelRootItem *root);
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// Returns list of feeds which belong to given indexes.
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// NOTE: If index is "category", then all child feeds are contained in the
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// result.
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// NOTE: This is particularly useful for displaying messages of selected feeds.
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QList<FeedsModelFeed*> feedsForIndexes(const QModelIndexList &indexes);
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// Returns feeds contained within single index.
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QList<FeedsModelFeed*> feedsForIndex(const QModelIndex &index);
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public slots:
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// Signals that properties (probably counts)
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// of ALL items have changed.
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void reloadWholeLayout();
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// Signals that SOME data of this model need
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// to be reloaded by ALL attached views.
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void reloadChangedLayout(QModelIndexList list);
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protected:
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// Returns feed/category which lies at the specified index or
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// null if index is invalid.
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FeedsModelRootItem *itemForIndex(const QModelIndex &index) const;
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// Loads feed/categories from the database.
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void loadFromDatabase();
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// Takes lists of feeds/categories and assembles
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// them into the tree structure.
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void assembleCategories(CategoryAssignment categories);
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void assembleFeeds(FeedAssignment feeds);
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private:
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FeedsModelRootItem *m_rootItem;
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QList<QString> m_headerData;
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QList<QString> m_tooltipData;
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QIcon m_countsIcon;
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};
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#endif // FEEDSMODEL_H
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