CC - Button

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-- BY UPZONE --
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os.loadAPI("builder\\apis\\Paint")
os.loadAPI("builder\\apis\\Colors")

local Button = {
}

function Button.__init__(baseClass, button)
  self = button
  setmetatable (self, {__index=Button})
  return self
end

setmetatable(Button, {__call=Button.__init__})

function Button:getText()
  return self.text
end

function Button:getPosition()
  return self.position
end

function Button:getPositionX()
  return tonumber(self:getPosition()["x"])
end

function Button:getPositionY()
  return tonumber(self:getPosition()["y"])
end

function Button:raiseOnClick()
  self:setHighlighted(true)
  self:onClick()
    sleep(.075)
  self:setHighlighted(false)
end

function Button:getSize()
  return self.size
end

function Button:getSizeWidth()
  return tonumber(self:getSize()["width"])
end

function Button:getSizeHeight()
  return tonumber(self:getSize()["height"])
end

function Button:intersects(posX, posY)
  x = self:getPositionX()
  y = self:getPositionY()
  width = self:getSizeWidth()
  height = self:getSizeHeight()
  endX = x + width - 1
  endY = y + height - 1

  intersectsX = ( posX >= x and posX <= endX )
  intersectsY = ( posY >= y and posY <= endY )

  return ( intersectsX and intersectsY )
end

function Button:getColors()
  return self.colors
end

function Button:getTextColor()
  return self:getColors()["textColor"]
end

function Button:getHighlightedTextColor()
  return self:getColors()["highlightedTextColor"]
end

function Button:getBackgroundColor()
  return self:getColors()["backgroundColor"]
end

function Button:getHighlightedBackgroundColor()
  return self:getColors()["highlightedBackgroundColor"]
end

function Button:setHighlighted(highlighted)
  bgColor = nil
  txtColor = nil

  if highlighted then
    bgColor = self:getHighlightedBackgroundColor()
    txtColor = self:getHighlightedTextColor()
  else
    bgColor = self:getBackgroundColor()
    txtColor = self:getTextColor()
  end

  -- background
  Paint.fill(self:getPositionX(), self:getPositionY(), ( self:getPositionX() + self:getSizeWidth() - 1), ( self:getPositionY() + self:getSizeHeight() - 1), bgColor)

  textLength = string.len(self:getText())
  offsetLeft = math.floor((self:getSizeWidth() - textLength) / 2)
  offsetTop = math.floor((self:getSizeHeight() - 1) / 2)

  -- text
  term.setCursorPos(self:getPositionX() + offsetLeft, self:getPositionY() + offsetTop)
  term.blit(self:getText(), string.rep(txtColor, textLength), string.rep(bgColor, textLength))
end



function Button:draw()
  self:setHighlighted(false)
end

-- Factory
function create(text, x, y, width, height, onClick, textColor, backgroundColor, highlightedTextColor, highlightedBackgroundColor)
  return Button({
    text = text,
    position = {
      x = x,
      y = y
    },
    size = {
      width = width,
      height = height
    },
    onClick = onClick,
    colors = {
      textColor = textColor,
      backgroundColor = backgroundColor,
      highlightedTextColor = highlightedTextColor,
      highlightedBackgroundColor = highlightedBackgroundColor
    }})
end