To ensure a continuous and productive work flow, when a view mode has no files to present, it offers a set of guiding actions with some possible paths to follow.
Initially, when there is no working copy configured the All Files view mode lists the following two actions:

All Files Panel
Information message - Informs you
why there are no resources presented in the currently selected view mode;
Synchronize with Repository - Available only when there is nothing
to present in the Modified and Incoming view
modes;
Switch to Incoming - Selects the Incoming
view mode.
Switch to Outgoing - Selects the Outgoing
view mode.
Switch to Conflicts - Selects the Conflicts
view mode.
Show all changes/incoming/outgoing/conflicts - Depending on the
currently selected view mode, this action presents the corresponding resources after a
synchronize operation was executed only on a part of the working copy resources.