/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */

#ifndef nsIScriptContextOwner_h__
#define nsIScriptContextOwner_h__

#include "nscore.h"
#include "nsISupports.h"
#include "nsIScriptContext.h"

class nsIScriptContext;

#define NS_ISCRIPTCONTEXTOWNER_IID           \
{ /* a94ec640-0bba-11d2-b326-00805f8a3859 */ \
 0xa94ec640, 0x0bba, 0x11d2,                 \
  {0xb3, 0x26, 0x00, 0x80, 0x5f, 0x8a, 0x38, 0x59} }

/**
 * Implemented by any object capable of supplying a nsIScriptContext.
 * The implentor may create the script context on demand and is
 * allowed (though not expected) to throw it away on release.
 */

class nsIScriptContextOwner : public nsISupports {
public:
  static const nsIID& GetIID() { static nsIID iid = NS_ISCRIPTCONTEXTOWNER_IID; return iid; }

  /**
   * Returns a script context. The assumption is that the
   * script context has an associated script global object and
   * is ready for script evaluation.
   */
  NS_IMETHOD  GetScriptContext(nsIScriptContext **aContext) = 0;

  /**
   * Returns the script global object
   */
  NS_IMETHOD  GetScriptGlobalObject(nsIScriptGlobalObject **aGlobal) = 0;

  /**
   * Called to indicate that the script context is no longer needed.
   * The caller should <B>not</B> also call the context's Release()
   * method.
   */
  NS_IMETHOD  ReleaseScriptContext(nsIScriptContext *aContext) = 0;
};

#endif // nsIScriptContextOwner_h__