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nsIDragService.idl

/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corp.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Mike Pinkerton
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"
#include "nsISupportsArray.idl"
#include "nsIDragSession.idl"
#include "nsIScriptableRegion.idl"


interface nsIDOMNode;


[scriptable, uuid(8B5314BB-DB01-11d2-96CE-0060B0FB9956)]
interface nsIDragService : nsISupports
{
  const long DRAGDROP_ACTION_NONE = 0;
  const long DRAGDROP_ACTION_COPY = 1;
  const long DRAGDROP_ACTION_MOVE = 2;
  const long DRAGDROP_ACTION_LINK = 4;
  
  /**
    * Starts a modal drag session with an array of transaferables 
    *
    * @param  aTransferables - an array of transferables to be dragged
    * @param  aRegion - a region containing rectangles for cursor feedback, 
    *            in window coordinates.
    * @param  aActionType - specified which of copy/move/link are allowed
    */
  void invokeDragSession ( in nsIDOMNode aDOMNode, in nsISupportsArray aTransferables, 
                             in nsIScriptableRegion aRegion, in unsigned long aActionType );

  /**
    * Returns the current Drag Session  
    */
  nsIDragSession getCurrentSession ( ) ;

  /**
    * Tells the Drag Service to start a drag session. This is called when
    * an external drag occurs
    */
  void startDragSession ( ) ;

  /**
    * Tells the Drag Service to end a drag session. This is called when
    * an external drag occurs
    */
  void endDragSession ( ) ;
  
};


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