browser

local back = colors.blue
local button = colors.green
local text = colors.black
function draw()
  term.setTextColor(text)
  term.setBackgroundColor(back)
  term.clear()
  for i,v in pairs(buttons) do
    term.setBackgroundColor(button)
    term.setCursorPos(v[2],v[3])
    write(v[1])
  end
  term.setBackgroundColor(back)
end
buttons = {}
buttons[1] = {} --create a new button
buttons[1][1] = "Test"-- button title
buttons[1][2] = 3 --button x
buttons[1][3] =10 --buttons y
buttons[1][4] = function() --function if the button is pressed
  print("Button 1 pressed")
end
draw()
while true do
  local evt,b,x,y = os.pullEvent("mouse_click")
  for i,v in pairs(buttons) do
    if v[2] <= x and v[2] + #v[1] >= x and v[3] == y then
      v[4]()
    end
  end
end