/* ***** 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) 2003
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *              Simon Fraser <sfraser@netscape.com>
 *
 * 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 "nsIControllerCommand.idl"
#include "nsICommandParams.idl"

/**
 * nsIControllerCommandTable
 * 
 * An interface via which a controller can maintain a series of commands,
 * and efficiently dispatch commands to their respective handlers.
 *
 * Controllers that use an nsIControllerCommandTable should support
 * nsIInterfaceRequestor, and be able to return an interface to their
 * controller command table via getInterface().
 * 
 */

[scriptable, uuid(d1a47834-6ad4-11d7-bfad-000393636592)]
interface nsIControllerCommandTable : nsISupports
{
  /**
   * Make this command table immutable, so that commands cannot
   * be registered or unregistered. Some command tables are made
   * mutable after command registration so that they can be 
   * used as singletons.
   */
  void  makeImmutable();
  
  /**
   * Register and unregister commands with the command table.
   *
   * @param aCommandName  the name of the command under which to register or
   *                      unregister the given command handler.
   *
   * @param aCommand      the handler for this command.
   */
  void    registerCommand(in string aCommandName, in nsIControllerCommand aCommand);
  void    unregisterCommand(in string aCommandName, in nsIControllerCommand aCommand);
  
  /**
   * Find the command handler which has been registered to handle the named command.
   *
   * @param aCommandName  the name of the command to find the handler for.
   */
  nsIControllerCommand findCommandHandler(in string aCommandName);

  /**
   * Get whether the named command is enabled.
   *
   * @param aCommandName    the name of the command to test
   * @param aCommandRefCon  the command context data
   */
	boolean isCommandEnabled(in string aCommandName, in nsISupports aCommandRefCon);

  /**
   * Tell the command to udpate its state (if it is a state updating command)
   *
   * @param aCommandName    the name of the command to update
   * @param aCommandRefCon  the command context data
   */
	void  updateCommandState(in string aCommandName, in nsISupports aCommandRefCon);

  /**
   * Get whether the named command is supported.
   *
   * @param aCommandName    the name of the command to test
   * @param aCommandRefCon  the command context data
   */
	boolean supportsCommand(in string aCommandName, in nsISupports aCommandRefCon);

  /**
   * Execute the named command.
   *
   * @param aCommandName    the name of the command to execute
   * @param aCommandRefCon  the command context data
   */
	void    doCommand(in string aCommandName, in nsISupports aCommandRefCon);

	void    doCommandParams(in string aCommandName, in nsICommandParams aParam, in nsISupports aCommandRefCon);

	void    getCommandState(in string aCommandName, in nsICommandParams aParam, in nsISupports aCommandRefCon);
};



%{C++
// {670ee5da-6ad5-11d7-9950-000393636592}
#define NS_CONTROLLERCOMMANDTABLE_CID \
  {0x670ee5da, 0x6ad5, 0x11d7, \
    { 0x99, 0x50, 0x00, 0x03, 0x93, 0x63, 0x65, 0x92 }}

#define NS_CONTROLLERCOMMANDTABLE_CONTRACTID \
 "@mozilla.org/embedcomp/controller-command-table;1"
%}
