Controller.java 文件源码

/** @invisible
 * 
 * Prints the available controls and their ranges to the console. Not all
 * Controllers have all of the controls available on them so this is a way to find
 * out what is available.
 * 
 */
public void printControls()
{
  if (controls.length > 0)
  {
    System.out.println("Available controls are:");
    for (int i = 0; i < controls.length; i++)
    {
      Control.Type type = controls[i].getType();
      System.out.print("  " + type.toString());
      if (type == VOLUME || type == GAIN || type == BALANCE || type == PAN)
      {
        FloatControl fc = (FloatControl) controls[i];
        String shiftSupported = "does";
        if (fc.getUpdatePeriod() == -1)
        {
          shiftSupported = "doesn't";
        }
        System.out.println(", which has a range of " + fc.getMaximum() + " to "
            + fc.getMinimum() + " and " + shiftSupported
            + " support shifting.");
      }
      else
      {
        System.out.println("");
      }
    }
  }
  else
  {
    System.out.println("There are no controls available.");
  }
}