0.1.0

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

--Variables
uiB = {}
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 = 0x 008080
navy = 0x000080

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

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

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

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

--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