Automatically open roots pane if default dir is empty.

Move drawer fiddling out of DirectoryFragment into respective
    FragmentTuner instance.

Bug: 27084308
Change-Id: Ia13fc2be1442e1a7164c2d67ea6ce4bcfda68bcc
5 files changed
tree: a321054a6ee8a2a449af193b5852b32eb3a25941
  1. res/
  2. src/
  3. tests/
  4. Android.mk
  5. AndroidManifest.xml
  6. lint.xml
  7. wrap_alpha.py