/* -*- Mode: C++; 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.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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 "nsICommandParams.idl"

/**
 * nsIControllerCommand
 *
 * A generic command interface. You can register an nsIControllerCommand
 * with the nsIControllerCommandTable.
 */

[scriptable, uuid(0eae9a46-1dd2-11b2-aca0-9176f05fe9db)]
interface nsIControllerCommand : nsISupports
{

  /**
   * Returns true if the command is currently enabled. An nsIControllerCommand
   * can implement more than one commands; say, a group of related commands
   * (e.g. delete left/delete right). Because of this, the command name is
   * passed to each method.
   *
   * @param aCommandName  the name of the command for which we want the enabled
   *                      state.
   * @param aCommandContext    a cookie held by the nsIControllerCommandTable,
   *                  allowing the command to get some context information.
   *                  The contents of this cookie are implementation-defined.
   */
  boolean isCommandEnabled(in string aCommandName, in nsISupports aCommandContext);

  void getCommandStateParams(in string aCommandName, in nsICommandParams aParams, in nsISupports aCommandContext);
  
  /**
   * Execute the name command.
   *
   * @param aCommandName  the name of the command to execute.
   * 
   * @param aCommandContext    a cookie held by the nsIControllerCommandTable,
   *                  allowing the command to get some context information.
   *                  The contents of this cookie are implementation-defined.
   */
  void    doCommand(in string aCommandName, in nsISupports aCommandContext);

  void    doCommandParams(in string aCommandName, in nsICommandParams aParams, in nsISupports aCommandContext);
  
};