[vlc-devel] [PATCH] QT4 playlist: even better DragNDrop policy

Jakob Leben jakob.leben at gmail.com
Mon Aug 10 01:26:36 CEST 2009

In other words: qt playlist model interprets and uses input item IDs just
right. every playlist item has a corresponding input item (id), therefore
PLItem also stores this input item's id for convenience. PLItem of course
also stores playlist item ID: PLItem::i_id.

the trick is that "top" items (playlist, media library, podcasts, radio
listings...) come just as well twice, once under playlist_t->p_root_category
(for tree representation) and second time under playlist_t->p_root_onelevel
(for the list representation). and they have just as well their input items
that 'bind' the two playlist items.

so, it's possible to compare any PLItem with any leaf of the playlist
structure by input items. sometimes you even want that to avoid checking
twice (for both playlist items)
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