Purpose:

To give players a clearer indication of their cc state, in particular stun state and fear state.

Function:

When stunned, "STUNNED" shows up in the middle of screen.

Mechanics:

It uses event EVENT_PLAYER_STUNNED_STATE_CHANGED (eventCode, bool) to find the player stun state.
It uses event EVENT_COMBAT_EVENT, ACTION_RESULT_FEARED, to find the player fear state.
It uses EVENT_REMOVE_ACTIVE_COMBAT_TIP, to indicate end of fear state.

Background:

Stun state and fear state are grouped together where both are represented by the graphical element STUNNED because the resolution method of both states are the same.

Conclusion:

Only limited testing was performed, some abilities might not register. Possible problems when multiple crowd control effects occurring simultaneously.

Acknowledgment:

@Scootsworks for working with me helping me with writing addons and answering my questions.
@deadpool85 for testing the add on
and people in gitter.

Installation:

Drag and drop in Documents/Elder Scrolls Online/live/AddOns folder

Versions:

1.1: Fixed graphical typo where "STUNED" is now "STUNNED"