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/* -*- 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):
 *   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"

/*
 * nsICommandParams is used to pass parameters to commands executed
 * via nsICommandManager, and to get command state.
 *
 */

[scriptable, uuid(83f892cf-7ed3-490e-967a-62640f3158e1)]
interface nsICommandParams : nsISupports
{

  /*
   * List of primitive types for parameter values.
   */
  const short eNoType                     = 0;      /* Only used for sanity checking */
  const short eBooleanType                = 1;
  const short eLongType                   = 2;
  const short eDoubleType                 = 3;
  const short eWStringType                = 4;
  const short eISupportsType              = 5;
  const short eStringType                 = 6;

  /*
   * getValueType
   * 
   * Get the type of a specified parameter
   */
  short       getValueType(in string name);

  /*
   * get_Value
   * 
   * Get the value of a specified parameter. Will return
   * an error if the parameter does not exist, or if the value
   * is of the wrong type (no coercion is performed for you).
   * 
   * nsISupports values can contain any XPCOM interface,
   * as documented for the command. It is permissible
   * for it to contain nsICommandParams, but not *this*
   * one (i.e. self-containing is not allowed).
   */
  boolean     getBooleanValue(in string name);
  long        getLongValue(in string name);
  double      getDoubleValue(in string name);
  AString     getStringValue(in string name);
  string      getCStringValue(in string name);
  nsISupports getISupportsValue(in string name);
  
  /*
   * set_Value
   * 
   * Set the value of a specified parameter (thus creating
   * an entry for it).
   * 
   * nsISupports values can contain any XPCOM interface,
   * as documented for the command. It is permissible
   * for it to contain nsICommandParams, but not *this*
   * one (i.e. self-containing is not allowed).
   */
  void        setBooleanValue(in string name, in boolean value);
  void        setLongValue(in string name, in long value);
  void        setDoubleValue(in string name, in double value);
  void        setStringValue(in string name, in AString value);
  void        setCStringValue(in string name, in string value);
  void        setISupportsValue(in string name, in nsISupports value);
  
  /*
   * removeValue
   * 
   * Remove the specified parameter from the list.
   */
  void        removeValue(in string name);
  
  /*
   * Enumeration methods
   * 
   * Use these to enumerate over the contents of a parameter
   * list. For each name that getNext() returns, use 
   * getValueType() and then getMumbleValue to get its
   * value.
   */
  boolean     hasMoreElements();
  void        first();

  /**
   * GetNext()
   * 
   * @return string pointer that will be allocated and is up 
   *         to the caller to free
   */
  string      getNext();

};

// {f7fa4581-238e-11d5-a73c-ab64fb68f2bc}
%{C++
#define NS_COMMAND_PARAMS_CID { 0xf7fa4581, 0x238e, 0x11d5, { 0xa7, 0x3c, 0xab, 0x64, 0xfb, 0x68, 0xf2, 0xbc } }
#define NS_COMMAND_PARAMS_CONTRACTID "@mozilla.org/embedcomp/command-params;1"
%}