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/gecko_sdk/idl/nsILoadGroup.idl

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IDL | 108 lines | 18 code | 9 blank | 81 comment | 0 complexity | d1e33178af7353f8109881ff1a23367d MD5 | raw file
  1/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
  2/* ***** BEGIN LICENSE BLOCK *****
  3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  4 *
  5 * The contents of this file are subject to the Mozilla Public License Version
  6 * 1.1 (the "License"); you may not use this file except in compliance with
  7 * the License. You may obtain a copy of the License at
  8 * http://www.mozilla.org/MPL/
  9 *
 10 * Software distributed under the License is distributed on an "AS IS" basis,
 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 12 * for the specific language governing rights and limitations under the
 13 * License.
 14 *
 15 * The Original Code is mozilla.org code.
 16 *
 17 * The Initial Developer of the Original Code is
 18 * Netscape Communications Corporation.
 19 * Portions created by the Initial Developer are Copyright (C) 1998
 20 * the Initial Developer. All Rights Reserved.
 21 *
 22 * Contributor(s):
 23 *
 24 * Alternatively, the contents of this file may be used under the terms of
 25 * either the GNU General Public License Version 2 or later (the "GPL"), or
 26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 27 * in which case the provisions of the GPL or the LGPL are applicable instead
 28 * of those above. If you wish to allow use of your version of this file only
 29 * under the terms of either the GPL or the LGPL, and not to allow others to
 30 * use your version of this file under the terms of the MPL, indicate your
 31 * decision by deleting the provisions above and replace them with the notice
 32 * and other provisions required by the GPL or the LGPL. If you do not delete
 33 * the provisions above, a recipient may use your version of this file under
 34 * the terms of any one of the MPL, the GPL or the LGPL.
 35 *
 36 * ***** END LICENSE BLOCK ***** */
 37
 38#include "nsIRequest.idl"
 39
 40interface nsISimpleEnumerator;
 41interface nsIRequestObserver;
 42interface nsIInterfaceRequestor;
 43
 44/**
 45 * A load group maintains a collection of nsIRequest objects. 
 46 *
 47 * @status FROZEN
 48 */
 49[scriptable, uuid(3de0a31c-feaf-400f-9f1e-4ef71f8b20cc)]
 50interface nsILoadGroup : nsIRequest
 51{
 52    /**
 53     * The group observer is notified when requests are added to and removed
 54     * from this load group.  The groupObserver is weak referenced.
 55     */
 56    attribute nsIRequestObserver groupObserver;
 57
 58    /**
 59     * Accesses the default load request for the group.  Each time a number
 60     * of requests are added to a group, the defaultLoadRequest may be set
 61     * to indicate that all of the requests are related to a base request.
 62     *
 63     * The load group inherits its load flags from the default load request.
 64     * If the default load request is NULL, then the group's load flags are
 65     * not changed.
 66     */
 67    attribute nsIRequest defaultLoadRequest;
 68
 69    /**
 70     * Adds a new request to the group.  This will cause the default load
 71     * flags to be applied to the request.  If this is a foreground
 72     * request then the groupObserver's onStartRequest will be called.
 73     *
 74     * If the request is the default load request or if the default load
 75     * request is null, then the load group will inherit its load flags from
 76     * the request.
 77     */
 78    void addRequest(in nsIRequest aRequest,
 79                    in nsISupports aContext);
 80
 81    /**
 82     * Removes a request from the group.  If this is a foreground request
 83     * then the groupObserver's onStopRequest will be called.
 84     *
 85     * By the time this call ends, aRequest will have been removed from the
 86     * loadgroup, even if this function throws an exception.
 87     */
 88    void removeRequest(in nsIRequest aRequest, 
 89                       in nsISupports aContext,
 90                       in nsresult aStatus);
 91
 92    /**
 93     * Returns the requests contained directly in this group.
 94     * Enumerator element type: nsIRequest.
 95     */
 96    readonly attribute nsISimpleEnumerator requests;
 97
 98    /**
 99     * Returns the count of "active" requests (ie. requests without the
100     * LOAD_BACKGROUND bit set).
101     */
102    readonly attribute unsigned long activeCount;
103
104    /**
105     * Notification callbacks for the load group.
106     */
107    attribute nsIInterfaceRequestor notificationCallbacks;
108};