local Constraints = require "lib.simple_ui.core.constraints"
local SingleChildElement = require "lib.simple_ui.core.single_child_element"

--- @class Center : SingleChildElement
local element = setmetatable({}, SingleChildElement)
element.__index = element
element.type = "Center"

function element:layout()
    self._size_ = Vec3 { self._constraints_.maxWidth, self._constraints_.maxHeight }

    if not self._child_ then return end
    self._child_._constraints_ = Constraints(self._constraints_)
    self._child_:layout()

    self._child_._offset_ = Vec3 {
        (self._size_.x - self._child_._size_.x) / 2,
        (self._size_.y - self._child_._size_.y) / 2,
    }
end

--- @return Center
--- @param values {child: UIElement?}
function element:new(values)
    return SingleChildElement.new(self, values)
end

return element