Add File Awareness Information

[tobous]

Saros/I currently does not support file awareness information. This awareness information tells the user which files are currently visible to other participants in the session.

Wanted behavior:

The awareness information has two separate aspects that are displayed through additional symbols on the file/folder icon in the project view.

• Which files are visible to another user (open in an active/visible editor) is shown through a colored dot on the file icon in the project view.
  • If the file is only visible to a single participant, the dot has the color of the participant.
  • If the file is visible to multiple participants, the dot is gray.
• Which files/folders are shared is visible through a double-arrow on the file/folder icon in the project view.

Both of these features are also described with the corresponding icons on the Saros website.

Existing work:

This functionality has already been worked on in the Gerrit change 2796 - [FEATURE][I] Project View Awareness (the old Gerrit instance is no longer publicly available, but if you are interested in working on this issue, we can provide the patch file). The icon modification logic might still be valid, but most of the rest of the logic needs to be rewritten (as it largely relies on hacks).