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 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 #include "nsISupports.idl"

 /**

  * Used for <scale> to listen to slider changes to avoid mutation listeners

  */

 [scriptable, uuid(e5b3074e-ee18-4538-83b9-2487d90a2a34)]

 interface nsISliderListener : nsISupports

 {

   /**

    * Called when the current, minimum or maximum value has been changed to

    * newValue. The which parameter will either be 'curpos', 'minpos' or 'maxpos'.

    * If userChanged is true, then the user changed ths slider, otherwise it

    * was changed via some other means.

    */

   void valueChanged(in AString which, in long newValue, in boolean userChanged);

   /**

    * Called when the user begins or ends dragging the thumb.

    */

   void dragStateChanged(in boolean isDragging);

 };