-- panel 
local JGUI = {}

local Widget = {
    -- common properties
    name,                -- name 
    x, y, width, height, -- boundary 
    swallow,             -- swallow event or not by default
    -- event callbacks
    onClick,             -- clicked callback 
    onHover,             -- hover callback 
    -- common functions
    onEvent,
}
function Widget.onEvent(clicked, )

end 

local Panel = {
    widgets = {}, 
} 


------------------------------------
-- 
------------------------------------
JGUI.newButton = function()

end 

JGUI.newPanel = function()

end