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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
* The origin of this IDL file is
interface MutationRecord {
readonly attribute DOMString type;
// .target is not nullable per the spec, but in order to prevent crashes,
// if there are GC/CC bugs in Gecko, we let the property to be null.
readonly attribute Node? target;
readonly attribute NodeList addedNodes;
readonly attribute NodeList removedNodes;
readonly attribute Node? previousSibling;
readonly attribute Node? nextSibling;
readonly attribute DOMString? attributeName;
readonly attribute DOMString? attributeNamespace;
readonly attribute DOMString? oldValue;
readonly attribute sequence<Animation> addedAnimations;
readonly attribute sequence<Animation> changedAnimations;
readonly attribute sequence<Animation> removedAnimations;
interface MutationObserver {
constructor(MutationCallback mutationCallback);
[Throws, NeedsSubjectPrincipal]
void observe(Node target, optional MutationObserverInit options = {});
void disconnect();
sequence<MutationRecord> takeRecords();
[ChromeOnly, Throws]
sequence<MutationObservingInfo?> getObservingInfo();
readonly attribute MutationCallback mutationCallback;
attribute boolean mergeAttributeRecords;
callback MutationCallback = void (sequence<MutationRecord> mutations, MutationObserver observer);
dictionary MutationObserverInit {
boolean childList = false;
boolean attributes;
boolean characterData;
boolean subtree = false;
boolean attributeOldValue;
boolean characterDataOldValue;
boolean nativeAnonymousChildList = false;
boolean animations = false;
sequence<DOMString> attributeFilter;
dictionary MutationObservingInfo : MutationObserverInit
Node? observedNode = null;