GUI

--# My base class which is the ground on which every class is buit on

local BaseClass = {}

function BaseClass.new()
    local self = {}
    return setmetatable(self, {__index = BaseClass})
end

BaseClass.__call = function(...)
    return BaseClass.new(...)
end

setmetatable(BaseClass,BaseClass)

function BaseClass.getType()
    return "BaseClass"
end


--# My square class which allows to draw squares

local SquareClass = {__index = BaseClass, col = colors.lime}

function SquareClass.new(sX,sY,length,height,col)
    local self = BaseClass()
    self.l = length
    self.height = height
    self.col = col
    self.sx = sX
    self.sy = sY
    return setmetatable(self, {__index = SquareClass})
end

function SquareClass.getType()
    return "SquareClass"
end

function SquareClass:setLength(length)
    self.length = length
    return self
end

function SquareClass:setWidth(width)
    self.width = width
    return self
end

function SquareClass:getLength()
    return self.length
end

function SquareClass:getWidth()
    return self.height
end

function SquareClass:draw(t)

    if t == "fill" then
        term.setBackgroundColor(self.col)
        for i = self.sy, self.height do
            term.setCursorPos(self.sx,i)
            for j = self.sx, self.length do
                term.write(" ")
            end
        end
    elseif t == "outline" then
        for i = self.sy, self.height do
            if i == self.sy or i == self.height then
                term.setBackgroundColor(self.col)
                for j = self.sx, self.length do
                    term.write(" ")
                end
            else
                for j = self.sx, self.length do
                    if j == self.sx or j == self.l then
                        term.setBackgroundColor(self.col)
                        term.write(" ")
                    else
                        term.setBackgroundColor(colors.black)
                    end
                end
            end
        end
    end
end


function SquareClass.__call(...)
    return SquareClass.new(...)
end

setmetatable(SquareClass, SquareClass)

local sq  = SquareClass(3,3,3,3,null)
sq:draw("fill")