gecko-dev/uriloader/base/nsIWebProgress.idl

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/* -*- Mode: IDL; tab-width: 4; 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 the Mozilla browser.
*
* The Initial Developer of the Original Code is
* Netscape Communications, Inc.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Travis Bogard <travis@netscape.com>
* Darin Fisher <darin@meer.net>
*
* 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 ***** */
#include "nsISupports.idl"
interface nsIDOMWindow;
interface nsIWebProgressListener;
/**
* The nsIWebProgress interface is used to add or remove nsIWebProgressListener
* instances to observe the loading of asynchronous requests (usually in the
* context of a DOM window).
*
* nsIWebProgress instances may be arranged in a parent-child configuration,
* corresponding to the parent-child configuration of their respective DOM
* windows. However, in some cases a nsIWebProgress instance may not have an
* associated DOM window. The parent-child relationship of nsIWebProgress
* instances is not made explicit by this interface, but the relationship may
* exist in some implementations.
*
* A nsIWebProgressListener instance receives notifications for the
* nsIWebProgress instance to which it added itself, and it may also receive
* notifications from any nsIWebProgress instances that are children of that
* nsIWebProgress instance.
*
* @status FROZEN
*/
[scriptable, uuid(570F39D0-EFD0-11d3-B093-00A024FFC08C)]
interface nsIWebProgress : nsISupports
{
/**
* The following flags may be combined to form the aNotifyMask parameter for
* the addProgressListener method. They limit the set of events that are
* delivered to an nsIWebProgressListener instance.
*/
/**
* These flags indicate the state transistions to observe, corresponding to
* nsIWebProgressListener::onStateChange.
*
* NOTIFY_STATE_REQUEST
* Only receive the onStateChange event if the aStateFlags parameter
* includes nsIWebProgressListener::STATE_IS_REQUEST.
*
* NOTIFY_STATE_DOCUMENT
* Only receive the onStateChange event if the aStateFlags parameter
* includes nsIWebProgressListener::STATE_IS_DOCUMENT.
*
* NOTIFY_STATE_NETWORK
* Only receive the onStateChange event if the aStateFlags parameter
* includes nsIWebProgressListener::STATE_IS_NETWORK.
*
* NOTIFY_STATE_WINDOW
* Only receive the onStateChange event if the aStateFlags parameter
* includes nsIWebProgressListener::STATE_IS_WINDOW.
*
* NOTIFY_STATE_ALL
* Receive all onStateChange events.
*/
const unsigned long NOTIFY_STATE_REQUEST = 0x00000001;
const unsigned long NOTIFY_STATE_DOCUMENT = 0x00000002;
const unsigned long NOTIFY_STATE_NETWORK = 0x00000004;
const unsigned long NOTIFY_STATE_WINDOW = 0x00000008;
const unsigned long NOTIFY_STATE_ALL = 0x0000000f;
/**
* These flags indicate the other events to observe, corresponding to the
* other four methods defined on nsIWebProgressListener.
*
* NOTIFY_PROGRESS
* Receive onProgressChange events.
*
* NOTIFY_STATUS
* Receive onStatusChange events.
*
* NOTIFY_SECURITY
* Receive onSecurityChange events.
*
* NOTIFY_LOCATION
* Receive onLocationChange events.
*/
const unsigned long NOTIFY_PROGRESS = 0x00000010;
const unsigned long NOTIFY_STATUS = 0x00000020;
const unsigned long NOTIFY_SECURITY = 0x00000040;
const unsigned long NOTIFY_LOCATION = 0x00000080;
/**
* This flag enables all notifications.
*/
const unsigned long NOTIFY_ALL = 0x000000ff;
/**
* Registers a listener to receive web progress events.
*
* @param aListener
* The listener interface to be called when a progress event occurs.
* This object must also implement nsISupportsWeakReference.
* @param aNotifyMask
* The types of notifications to receive.
*
* @throw NS_ERROR_INVALID_ARG
* Indicates that aListener was either null or that it does not
* support weak references.
* @throw NS_ERROR_FAILURE
* Indicates that aListener was already registered.
*/
void addProgressListener(in nsIWebProgressListener aListener,
in unsigned long aNotifyMask);
/**
* Removes a previously registered listener of progress events.
*
* @param aListener
* The listener interface previously registered with a call to
* addProgressListener.
*
* @throw NS_ERROR_FAILURE
* Indicates that aListener was not registered.
*/
void removeProgressListener(in nsIWebProgressListener aListener);
/**
* The DOM window associated with this nsIWebProgress instance.
*
* @throw NS_ERROR_FAILURE
* Indicates that there is no associated DOM window.
*/
readonly attribute nsIDOMWindow DOMWindow;
/**
* Indicates whether or not a document is currently being loaded
* in the context of this nsIWebProgress instance.
*/
readonly attribute PRBool isLoadingDocument;
};