[Differential] [Request, 17 lines] D712: Don't list() if we are creating a new archive from Ark window

[elvisangelaccio (Elvis Angelaccio)]

elvisangelaccio created this revision.
elvisangelaccio added a reviewer: rthomsen.
elvisangelaccio set the repository for this revision to rARK Ark.
elvisangelaccio added a project: Ark.
Herald added a subscriber: kde-utils-devel.

REVISION SUMMARY
  Currently if we create a new archive using the New action, Ark creates a ListJob which is obviously going to fail, since the archive does not exist yet. Previously Ark would just ignore such failing jobs, but with Ark 15.12 the clirar plugin actually parses the error message of unrar as a valid comment (see attached screenshot).
  
  We can solve the problem at the root and only run a ListJob if the archive to be listed actually exists.

TEST PLAN
  Creating a new RAR archive using the New action, does not show anymore the unrar error message as comment.

REPOSITORY
  rARK Ark

REVISION DETAIL
  https://phabricator.kde.org/D712

AFFECTED FILES
  part/archivemodel.cpp
  part/archivemodel.h
  part/part.cpp

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To: elvisangelaccio, rthomsen
Cc: kde-utils-devel