DumbAwareAction

An action allowed to be performed in dumb mode

IntelliJ operates in either smart mode or dumb mode. In dumb mode PSI indexes are not available and certain restrictions apply. These restrictions are managed by the DumbService.

A DumbAwareAction can be used while in dumb mode. This is useful for things that apply to the IDE as a whole or do not require the file contents to be analyzed. (Ex. basic text editing or version control)