API GetShapeshiftFormCooldown

From WoWWiki

Returns the number of possible macro item icons. These icons differ from the normal macro icons in that they are icons for various items in the game -- potions, armor, etc., whereas normal macro icons are icons from actions and abilities such as spells or attacks.

startTime, duration, isActive = GetShapeshiftFormCooldown(index)

Parameters

index 

Number - Index of the desired form

Returns

startTime 

Number - The time in seconds (as returned by GetTime()) that the cooldown started

duration 

Number - The duration in seconds of the cooldown

isActive 

Number - Returns 1 if the cooldown is running, nil if it isn't

Example

local index = 1
local startTime, duration, isActive = GetShapeshiftFormCooldown(index)
if isActive then
    DEFAULT_CHAT_FRAME:AddMessage(string.format("Shapeshift %d not active", index))
else
    DEFAULT_CHAT_FRAME:AddMessage(string.format("Shapeshift %d has %f seconds remaining", index, duration - (GetTime() - startTime)))
end

Result

Displays the seconds remaining on the shapeshift form at index 1 or "Not Active" if there's no cooldown on that form