Variables
@:value(js.Browser.document.body)windowParent:Element = js.Browser.document.body
@:value([KeyCode.LEFT, KeyCode.RIGHT, KeyCode.UP, KeyCode.DOWN, KeyCode.BACKSPACE, KeyCode.TAB, KeyCode.DELETE, KeyCode.SPACE])preventDefaultKeys:Array<KeyCode> = [KeyCode.LEFT, KeyCode.RIGHT, KeyCode.UP, KeyCode.DOWN, KeyCode.BACKSPACE, KeyCode.TAB, KeyCode.DELETE, KeyCode.SPACE]