buttonAPI for OC

--By Willa_/WillaRL_

local event = require("event")
local process = require("process")
local component = require("component")
local gpu = component.gpu



local buttonAPI = {}
buttonAPI.__index = buttonAPI
setmetatable(buttonAPI, {__call = function(cls,...) return cls.new(...) end,})


local buttonAPIarr = {}
buttonAPIarr.__index = buttonAPIarr
setmetatable(buttonAPIarr, {__call = function(cls,...) return cls.new(...) end,})




--------------------------
--START CLASS buttonAPIarr
--------------------------

function buttonAPIarr.new()
  local self = setmetatable({}, buttonAPIarr)

  self.buttons = {}
  return self
end

function buttonAPIarr:add(label, behaviour, x2, x1, y2, y1, colourInit, colourClked, length, func)
  local newButton = buttonAPI(label, behaviour, x2, x1, y2, y1, colourInit, colourClked, length, func)
  table.insert(self.buttons, newButton)
end

function buttonAPIarr:click(x,y)
  for i, button in ipairs(self.buttons) do
    button:click(x,y)
  end
end

------------------------
--END CLASS buttonAPIarr
------------------------


-----------------------
--START CLASS buttonAPI
-----------------------

function buttonAPI.new(label, behaviour, x2, x1, y2, y1, colourInit, colourClked, length, func)
  local self = setmetatable({}, buttonAPI)

  self.xMin = x1
  self.yMin = y1
  self.xMax = x2
  self.yMax = y2

  self.colourInit = colourInit
  self.colourClked = colourClked

  self.label = label
  self.behaviour = behaviour
  self.length = length
  self.func = func
  self.clicked = false
  self:draw()

  return self
end


function buttonAPI:draw()
  if(self.clicked) then
    self:__draw(self.colourClked)
  else
    self:__draw(self.colourInit)
  end

end


function buttonAPI:__draw(colour)
  local oldColour = gpu.setBackground(colour, false)
  gpu.fill(self.xMin,self.yMin,self.xMax-self.xMin,self.yMax-self.yMin, " ")

  local midX = math.ceil( (self.xMax - self.xMin-1)/2) + self.xMin
  local midY = math.floor((self.yMax - self.yMin-1)/2) + self.yMin

  local labelLen = string.len(self.label)
  local labelMid = math.ceil(labelLen/2)

  local startPoint = midX-labelLen+labelMid
  gpu.set(startPoint,midY,self.label)

  gpu.setBackground(oldColour)
end


function buttonAPI:check(x,y)
  if(x >= self.xMin and x <= (self.xMax - 1)) and (y >= self.yMin and y <= (self.yMax - 1)) then
    return true
  else
    return false
  end
end


function buttonAPI:clickToggle()
  if (self.clicked) then
    self.clicked = false
    self:draw()
    return true

  else
    self.clicked = true
    self:draw()
    return true
  end
end


function buttonAPI:clickPulse()
  self.clicked = true
  self:draw()
  os.sleep(self.length)
  self.clicked = false
  self:draw()
end

function buttonAPI:click(x,y)
  if(self:check(x,y)) then
    self.func()

    if(self.behaviour == 0) then
      self:clickPulse()
      return true

    elseif(self.behaviour == 1) then
      self:clickToggle()
      return true

    end
  end
  return false
end

---------------------
--END CLASS buttonAPI
---------------------

return buttonAPIarr