View difference between Paste ID: RKxvF6Ub and Aik4Ld80

 require("class")
 require("engine")
 
 -- GUIElement class
 
 engine.GUIElement = newClass(engine.Entity)
 
 -- GUIElement methods
 
 function engine.GUIElement:setHandler(handler, ...)
 	self.handler = handler
 	self.handleArgs = ...
 end
 
 -- Protected methods
 
 function engine.GUIElement:handle(...)
 	self:action(...)
 	if self.handler then self.handler(self, self.handleArgs) end
 end
 
 -- Virtual methods
 
 function engine.GUIElement:action(...)
 end
 
 -- Container class
 
 engine.Container = newClass(engine.GUIElement)
 
 -- Container methods
 
 function engine.Container:setup(width, height)
 	self:setSize(width or 100, height or 100)
 	self:setBackgroundColor({200, 200, 200})
 	self:setBorderColor()
 	self.borderThickness = 2
 	self.hasBorder = true
 	self.hasBackground = true
 	self.selectable = true
 end
 
 function engine.Container:setBorderColor(color)
 	self.borderColor = color or {50, 50, 50}
 end
 
 function engine.Container:draw()
 	if self.hasBorder then
 		love.graphics.setLineWidth(self.borderThickness)
 		love.graphics.setColor(self.borderColor[1], self.borderColor[2], self.borderColor[3])
 		local a = self.borderThickness / 2
 		love.graphics.polygon("line", a, a, self.width - a, a, self.width - a, self.height - a, a, self.height - a)
 	end
 end
 
 -- Label class
 
 engine.Label = newClass(engine.GUIElement)
 
 -- Label methods
 
 function engine.Label:setup(text)
 	self:setSize(1, 1)
 	self:setTextColor()
 	self:setFont()
 	self:setText(text)
 	self.hasShadow = false
 	self.shadowOffsetX = -2
 	self.shadowOffsetY = 2
 	self.shadowAlpha = 127
 end
 
 function engine.Label:setText(text)
 	self.text = text
 	self:updateSize()
 end
 
 function engine.Label:setTextColor(color)
 	self.textColor = color or {50, 50, 50}
 end
 
 function engine.Label:setFont(font)
 	self.font = font or love.graphics.newFont(12)
 	if self.text then self:updateSize() end
 end
 
 function engine.Label:preDraw()
 	love.graphics.setFont(self.font)
 	if self.hasShadow then
 		love.graphics.setColor(0, 0, 0, self.shadowAlpha)
 		love.graphics.print(self.text, self.shadowOffsetX, self.shadowOffsetY)
 	end
 	love.graphics.setColor(self.textColor[1], self.textColor[2], self.textColor[3])
 	love.graphics.print(self.text, 0, 0)
 end
 
 -- Private methods
 
 function engine.Label:updateSize()
 	self:setSize(self.font:getWidth(self.text), self.font:getHeight())
 end
 
 -- Button class
 
 engine.Button = newClass(engine.Label)
 
 function engine.Button:setup(text, handler, ...)
 	self:setHandler(handler, ...)
 	self.borderThickness = 2
 	self:getSuperClass():setup(text)
 	self:setBackgroundColor({200, 200, 200})
 	self:setBorderColor()
 	self.hasBackground = true
 	self.selectable = true
 end
 
 engine.Button.setBorderColor = engine.Container.setBorderColor
 
 function engine.Button:focus(f)
 	if f then
 		self:setBackgroundColor({150, 150, 255})
 	else
 		self:setBackgroundColor({200, 200, 200})
 	end
 	self:refresh()
 end
 
 function engine.Button:mousepressed(x, y, button)
 	self:refresh()
 end
 
 engine.Button.mousereleased = engine.Button.mousepressed
 
 function engine.Button:mouseclicked(x, y, button)
 	self:handle()
 end
 
 function engine.Button:draw()
 	love.graphics.setBlendMode("alpha")
 	love.graphics.setLineWidth(self.borderThickness)
 	love.graphics.setColor(self.borderColor[1], self.borderColor[2], self.borderColor[3])
 	local a = self.borderThickness / 2
 	love.graphics.polygon("line", a, a, self.width - a, a, self.width - a, self.height - a, a, self.height - a)
 	if love.mouse.isDown("l") and self.selected then
 		love.graphics.setBlendMode("multiplicative")
 		love.graphics.setColor(0, 0, 0, 127)
 		love.graphics.polygon("fill", 0, 0, self.width, 0, self.width, self.height, 0, self.height)
 	end
 end
 
 function engine.Button:preDraw()
 	love.graphics.setColor(self.textColor[1], self.textColor[2], self.textColor[3])
 	love.graphics.setFont(self.font)
 	love.graphics.print(self.text, self.borderThickness * 2, self.borderThickness * 2)
 end
 
 -- Private methods
 
 function engine.Button:updateSize()
 	self:setSize(self.font:getWidth(self.text) + self.borderThickness * 4, self.font:getHeight() + self.borderThickness * 4)
 end
 
 -- TextField class
 
 engine.TextField = newClass(engine.Button)
 
 function engine.TextField:setup(text, width, height, handler, ...)
 	self:setHandler(handler, ...)
 	self.borderThickness = 2
 	self:getSuperClass():getClass():setup(text)
 	self:setBackgroundColor({200, 200, 200})
 	self:setBorderColor()
 	self.hasBackground = true
 	self.selectable = true
 	self:setSize(width or 125, height or 25)
 end
 
 function engine.TextField:keypressed(key, unicode)
 	if key == "return" then
 		self:handle()
 	elseif key == "backspace" then
 		self:setText(string.sub(self.text, 1, #self.text - 1))
 	elseif unicode > 31 and unicode < 127 then
 		self:setText(self.text .. string.char(unicode))
 	end
 	self:refresh()
 end
 
 function engine.TextField:mouseclicked(x, y, button)
 end
 
 -- Private methods
 
 function engine.TextField:updateSize()
 end