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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):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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 ***** */

/*
 * interface for rendering objects for replaced elements implemented by
 * a plugin
 */

#ifndef nsIObjectFrame_h___
#define nsIObjectFrame_h___

#include "nsIFrame.h"

class nsNPAPIPluginInstance;

class nsIObjectFrame : public nsQueryFrame
{
public:
  NS_DECL_QUERYFRAME_TARGET(nsIObjectFrame)

  NS_IMETHOD GetPluginInstance(nsNPAPIPluginInstance** aPluginInstance) = 0;

  /**
   * Instantiate a plugin for a channel, returning a stream listener for the
   * data.
   *
   * @note Calling this method can delete the frame, so don't assume
   *       the frame is alive after this call returns.
   */
  virtual nsresult Instantiate(nsIChannel* aChannel, nsIStreamListener** aStreamListener) = 0;

  /**
   * @note Calling this method can delete the frame, so don't assume
   *       the frame is alive after this call returns.
   */
  virtual void TryNotifyContentObjectWrapper() = 0;

  /**
   * Instantiate a plugin that loads the data itself.
   * @param aMimeType Type of the plugin to instantiate. May be null.
   * @param aURI      URI of the plugin data. May be null.
   * @note            Only one of aURI and aMimeType may be null.
   *                  If aURI is null, aMimeType must not be the empty string.
   * @note XXX this method is here only temporarily, until plugins are loaded
   *       from content.
   *
   * @note Calling this method can delete the frame, so don't assume
   *       the frame is alive after this call returns.
   */
  virtual nsresult Instantiate(const char* aMimeType, nsIURI* aURI) = 0;

  /**
   * Stops and unloads the plugin. Makes the frame ready to receive another
   * Instantiate() call. It is safe to call this method even when no plugin
   * is currently active in this frame.
   */
  virtual void StopPlugin() = 0;

  /**
   * Get the native widget for the plugin, if any.
   */
  virtual nsIWidget* GetWidget() = 0;

  /**
   * Update plugin active state. Frame should update if it is on an active tab
   * or not and forward that information to the plugin to make it possible to
   * throttle down plugin instance in non active case.
   */
  virtual void SetIsDocumentActive(bool aIsActive) = 0;
};

#endif /* nsIObjectFrame_h___ */