aacid added a comment.
The part is created by the shell, see around line 85. The basic idea is that shells and parts don't each other (in this particular case the shell is "cheating" a bit), and just use the query system. For example, ark will say, can i get a part that knows how to show PDF files? And then use that to show you a preview of the file. Now since our shell cheats because it knows specifically it'll get the okular part, it can cast to stuff like okular viewer interface. Basically parts are a plug-in system that can be used in random shells. Does that make sense? REPOSITORY R223 Okular REVISION DETAIL https://phabricator.kde.org/D21281 To: davidhurka, #okular Cc: aacid, okular-devel, joaonetto, tfella, ngraham, darcyshen
