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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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"
interface nsIRequest;
interface nsIInterfaceRequestor;

[scriptable, uuid(49439df2-b3d2-441c-bf62-866bdaf56fd2)]
interface nsIContentHandler : nsISupports
{
  /**
   * Tells the content handler to take over handling the content. If this
   * function succeeds, the URI Loader will leave this request alone, ignoring
   * progress notifications. Failure of this method will cause the request to be
   * cancelled, unless the error code is NS_ERROR_WONT_HANDLE_CONTENT (see
   * below).
   *
   * @param aWindowContext
   *        Window context, used to get things like the current nsIDOMWindow
   *        for this request. May be null.
   * @param aContentType
   *        The content type of aRequest
   * @param aRequest
   *        A request whose content type is already known.
   *
   * @throw NS_ERROR_WONT_HANDLE_CONTENT Indicates that this handler does not
   *        want to handle this content. A different way for handling this
   *        content should be tried.
   */
  void handleContent(in string aContentType,
                     in nsIInterfaceRequestor aWindowContext,
                     in nsIRequest aRequest);
};