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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"

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


%{C++
class nsCommandParams;
%}

[scriptable, builtinclass, uuid(b1fdf3c4-74e3-4f7d-a14d-2b76bcf53482)]
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);
  ACString    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 ACString value);
  void        setISupportsValue(in string name, in nsISupports value);

  /*
   * removeValue
   *
   * Remove the specified parameter from the list.
   */
  void        removeValue(in string name);

%{C++
  /**
   * In order to avoid circular dependency issues, these methods are defined
   * in nsCommandParams.h.  Consumers need to #include that header.
   */
  inline nsCommandParams* AsCommandParams();
  inline const nsCommandParams* AsCommandParams() const;
%}
};