Help with Hiding Addon except in Main Window

[Nant]

Good day all.

I have followed the tutorials to create my first addon. I am making a simple pane that displays stats such as Max(Mag/Stam), Recovery, SP/WP, SC/WC, etc in real time. I plan on extending the functionality later on, as well as changing to templates for the controls, but for now, I just want the addon to not display unless the character is in the main window. Currently, when I access the game menu, the addon is still visible until I log out etc. Is there an event I need to register for to toggle the view?

I realize my code is pretty ugly at this point, but any help or guidance would be appreciated.

Current lua:

SimpleStats = {}

SimpleStats.name = "SimpleStats"

function SimpleStats.OnWindowMoveStop()

	SimpleStats.savedVariables.left = SimpleStatsWindow:GetLeft()
	SimpleStats.savedVariables.top = SimpleStatsWindow:GetTop()

end

function SimpleStats:RestorePosition()

	local left = self.savedVariables.left
	local top = self.savedVariables.top
	
	SimpleStatsWindow:ClearAnchors()
	SimpleStatsWindow:SetAnchor(TOPLEFT, GuiRoot, TOPLEFT, left, top)

end

function SimpleStats:Initialize()
	
	self.savedVariables = ZO_SavedVars:New("SimpleStatsSavedVariables", 1, nil, {})
	
	self:RestorePosition()

end

function SimpleStats.OnAddOnLoaded(event, addonName)

	if addonName == SimpleStats.name then
		SimpleStats:Initialize()
	end
	
end

EVENT_MANAGER:RegisterForEvent(SimpleStats.name, EVENT_ADD_ON_LOADED, SimpleStats.OnAddOnLoaded)

Current XML:

<GuiXml>
	<Controls>
		<TopLevelControl name="SimpleStatsWindow" mouseEnabled="true" movable="true" clampedToScreen="true">
			<Dimensions x="200" y="150" />
			<Anchor point="TOPLEFT" relativeTo="GuiRoot" relativePoint="TOPLEFT" offsetY="-150" />
			
			<OnMoveStop>
				SimpleStats.OnWindowMoveStop()
			</OnMoveStop>
			
			<Controls>
				<Backdrop name="$(parent)Bg" inherits="ZO_DefaultBackdrop" />
				<Label name="$(parent)Label-Max" width="100" height="5" font="ZoFontGameLarge" inheritAlpha="true" color="FFFFFF" wrapMode="TRUNCATE" text="Max">
					<Anchor point="TOPLEFT" relativeTo="$(parent)" relativePoint="TOPLEFT" />
				</Label>
				<Label name="$(parent)Label-Rec" width="100" height="5" font="ZoFontGameLarge" inheritAlpha="true" color="FFFFFF" wrapMode="TRUNCATE" text="Rec">
					<Anchor point="TOPLEFT" relativeTo="$(parent)Label-Max" relativePoint="BOTTOMLEFT" />
				</Label>
				<Label name="$(parent)Label-Power" width="100" height="5" font="ZoFontGameLarge" inheritAlpha="true" color="FFFFFF" wrapMode="TRUNCATE" text="Pow">
					<Anchor point="TOPLEFT" relativeTo="$(parent)Label-Rec" relativePoint="BOTTOMLEFT" />
				</Label>
				<Label name="$(parent)Label-Crit" width="100" height="5" font="ZoFontGameLarge" inheritAlpha="true" color="FFFFFF" wrapMode="TRUNCATE" text="Cri">
					<Anchor point="TOPLEFT" relativeTo="$(parent)Label-Power" relativePoint="BOTTOMLEFT" />
				</Label>
				<Label name="$(parent)Label-Pen" width="100" height="5" font="ZoFontGameLarge" inheritAlpha="true" color="FFFFFF" wrapMode="TRUNCATE" text="Pen">
					<Anchor point="TOPLEFT" relativeTo="$(parent)Label-Crit" relativePoint="BOTTOMLEFT" />
				</Label>
			</Controls>
		</TopLevelControl>
	</Controls>
</GuiXml>