Line data    Source code

       1              : #ifndef LISVELFEEDITEM_H
       2              : #define LISVELFEEDITEM_H
       3              : 
       4              : #include "FeedItem.h"
       5              : #include "NewsPosition.h"
       6              : 
       7              : /*!
       8              :     \brief LISVEL is Fang's secret sauce for keeping a stable order of news
       9              :     items as you scroll through the view.
      10              : 
      11              :     LISVEL stands for:
      12              :       Limited
      13              :       Infinite
      14              :       Scrolling
      15              :       Via
      16              :       Exclusion
      17              :       List
      18              : 
      19              :     The NewsList maintains all loaded items in memory with a display window,
      20              :     allowing paging through previously loaded content without re-fetching
      21              :     from the database.
      22              :  */
      23              : class LisvelFeedItem : public FeedItem
      24              : {
      25              :     Q_OBJECT
      26              : public:
      27              :     explicit LisvelFeedItem(const qint64 id, const qint32 ordinal, const QString &title, QObject *parent = nullptr);
      28              : 
      29              :     /*!
      30              :         \param proposedBookmarkID
      31              :         \param allowBackward
      32              :         \return True if this item can be bookmarked.
      33              :      */
      34              :     virtual bool canBookmark(qint64 proposedBookmarkID, bool allowBackward) override;
      35              : 
      36              :     /*!
      37              :         \brief Overrides setBookmark to capture the timestamp for proper ordering.
      38              :      */
      39              :     virtual void setBookmark(qint64 toBookmarkID) override;
      40              : 
      41              :     /*!
      42              :         \brief Gets the current bookmark position (timestamp, id tuple).
      43              :      */
      44           53 :     inline const NewsPosition& getBookmarkPosition() const { return _bookmarkPosition; }
      45              : 
      46              : private:
      47              :     // Position of current bookmark (timestamp, id) for proper ordering comparison
      48              :     NewsPosition _bookmarkPosition;
      49              : };
      50              : 
      51              : #endif // LISVELFEEDITEM_H