0.2.0

--Required Librarys
text = require("text")
term = require("term")
component = require("component")
event = require("event")
gpu = component.gpu

--Variables
uiButton = {}
uiBar = {}
red = 0xFF0000
green = 0x008000
black = 0x000000
white = 0xFFFFFF
lime = 0x00FF00
blue = 0x0000FF
yellow = 0xFFFF00
cyan = 0x00FFFF
magenta = 0xFF00FF
silver = 0xC0C0C0
gray = 0x808080
maroon = 0x800000
olive = 0x808000
purple = 0x800080
teal = 0x008080
navy = 0x000080

--Functions
function addButton(nm, text, func, buttonType, colorOn, colorOff, x, y, width, height, displayed, onState)
  uiButton[nm] = {}
  uiButton[nm]["x"] = x
  uiButton[nm]["y"] = y
  uiButton[nm]["width"] = width
  uiButton[nm]["height"] = height
  uiButton[nm]["buttonType"] = buttonType
  uiButton[nm]["text"] = text
  uiButton[nm]["func"] = func
  uiButton[nm]["colorOn"] = colorOn
  uiButton[nm]["colorOff"] = colorOff
  uiButton[nm]["currentColor"] = colorOff
  uiButton[nm]["displayed"] = displayed
  uiButton[nm]["onState"] = onState
end

function displayUI()
  gpu.setBackground(black)
  term.clear()
  for k, v in pairs(uiButton) do
    if uiButton[k]["displayed"] then
      gpu.setBackground(uiButton[k]["currentColor"])
      gpu.fill(uiButton[k]["x"], uiButton[k]["y"], uiButton[k]["width"], uiButton[k]["height"], "X")
      TPosX = uiButton[k]["width"] / 2 + uiButton[k]["x"] - math.floor(string.len(uiButton[k]["text"]) / 2)
      TPosY = uiButton[k]["height"] / 2 + uiButton[k]["y"]
      print(TPosX .. " " .. TPosY)
      gpu.set(TPosX, TPosY, uiButton[k]["text"])
    end
  end
  for k, v in pairs(uiBar) do
    if uiBar[k]["displayed"] then
      gpu.setBackground(uibar[k]["borderColor"])
      gpu.fill(uiBar[k]["x"], uiBar[k]["y"], uiBar[k]["width"], uiBar[k]["height"], " ")
      gpu.setBackground(uiBar[k]["barColor"])
      gpu.fill(uiBar[k]["x"] + 1, uiBar[k]["y"] + 1, uiBar[k]["width"] - 1, uiBar[k]["height"] - 1, " ")
    end
  end
end

function checkButton(x, y)
  for k, v in pairs(uiButton) do
    if uiButton[k]["displayed"] then
      if x >= uiButton[k]["x"] and x <= uiButton[k]["x"] + uiButton[k]["width"] then
        if y >= uiButton[k]["y"] and y <= uiButton[k]["y"] + uiButton[k]["height"] then
          if uiButton[k]["buttonType"] == "button" then
            uiButton[k]["currentColor"] = uiButton[k]["colorOn"]
            os.sleep(0.1)
            displayUI()
            uiButton[k]["func"]()
            uiButton[k]["currentColor"] = uiButton[k]["colorOff"]
            displayUI()
          elseif uiButton[k]["buttonType"] == "toggle" then
            if uiButton[k]["currentColor"] == uiButton[k]["colorOff"] then
              uiButton[k]["currentColor"] = uiButton[k]["colorOn"]
              uiButton[k]["onState"] = true
            elseif uiButton[k]["currentColor"] == uiButton[k]["colorOn"] then
              uiButton[k]["currentColor"] = uiButton[k]["colorOff"]
              uiButton[k]["onState"] = false
            end
            uiButton[k]["func"]()
          end
        end
      end
    end
  end
end

function addBar(nm, borderColor, barColor, x, y, width, height, displayed, percent)
  uiBar[nm] = {}
  uiBar[nm]["borderColor"] = borderColor
  uiBar[nm]["barColor"] = barColor
  uiBar[nm]["x"] = x
  uiBar[nm]["y"] = y
  uiBar[nm]["width"] = width
  uiBar[nm]["height"] = height
  uiBar[nm]["displayed"] = displayed
  uiBar[nm]["percent"] = percent
end


function exit()
  print("Exiting")
  os.sleep(1)
  gpu.setBackground(black)
  os.exit()
end

function testToggle()
  print("Being Toggled")
  os.sleep(1)
end

function doNothing()
  print("Doing Nothing")
  os.sleep(0.2)
end

function menuSwitch()
  if uiButton["menuSwitch"][onState] then
    uiButton["exit"]["displayed"] = true
  elseif not uiButton["menuSwitch"][onState] then
    uiButton["exit"]["displayed"] = false
  end
end

--Add buttons
addButton("exit", "Exit Button", exit, "button", green, red, 5, 5, 15, 5, true, false)
addButton("testToggle", "Test Toggle", testToggle, "toggle", green, red, 5, 25, 15, 5, true, false)
addButton("example", "Example Button", doNothing, "button", green, red, 5, 35, 15, 5, true, false)
addButton("menuSwitch", "Menu Switcher", menuSwitch, "toggle", green, red, 5, 45, 15, 5, true, false)

addBar("testBar", gray, yellow, 25, 5, 15, 40, true, 50)

--Main Code Block
while true do
  e = {event.pull(1)}
  if e[4] == 207 then
    os.exit()
  elseif e[1] == "touch" then
    checkButton(e[3], e[4])
  end
  displayUI()
end