ToolTip = {}

-- private variables
local currentToolTip

-- private functions
local function moveToolTip(tooltip)
  local pos = getMouseCursorPos()
  pos.y = pos.y + 1
  local xdif = getScreenSize().width - (pos.x + tooltip:getWidth())
  if xdif < 2 then
    pos.x = pos.x - tooltip:getWidth() - 3
  else
    pos.x = pos.x + 10
  end
  tooltip:moveTo(pos)
end

-- public functions
function ToolTip.display(text)
  ToolTip.hide()
  if text then
    currentToolTip = UI.loadAndDisplay('/core/tooltip/tooltip.otui', UI.root)
    currentToolTip.onMouseMove = moveToolTip
    local label = currentToolTip:getChildById('toolTipText')
    label:setText(text)
    label:resizeToText()
    local size = label:getSize()
    size.width = size.width + 4
    size.height = size.height + 4
    currentToolTip:setSize(size)
    moveToolTip(currentToolTip)
  end
end

function ToolTip.hide()
  if currentToolTip then
    currentToolTip:destroy()
    currentToolTip = nil
  end
end