// GENERATED CONTENT - DO NOT EDIT
// Content was automatically extracted by Reffy into webref
// (https://github.com/w3c/webref)
// Source: Web Animations Level 2 (https://drafts.csswg.org/web-animations-2/)

[Exposed=Window]
partial interface AnimationTimeline {
    Animation play (optional AnimationEffect? effect = null);
};

[Exposed=Window]
partial interface AnimationEffect {
    // Timing hierarchy
    readonly attribute GroupEffect?     parent;
    readonly attribute AnimationEffect? previousSibling;
    readonly attribute AnimationEffect? nextSibling;

    undefined before (AnimationEffect... effects);
    undefined after (AnimationEffect... effects);
    undefined replace (AnimationEffect... effects);
    undefined remove ();
};

partial dictionary EffectTiming {
    double playbackRate = 1.0;
};

partial dictionary OptionalEffectTiming {
    double playbackRate;
};

partial dictionary ComputedEffectTiming {
    double startTime;
};

[Exposed=Window]
interface GroupEffect {
  constructor(sequence<AnimationEffect>? children,
              optional (unrestricted double or EffectTiming) timing = {});

  readonly attribute AnimationNodeList  children;
  readonly attribute AnimationEffect?   firstChild;
  readonly attribute AnimationEffect?   lastChild;
  GroupEffect clone ();

  undefined prepend (AnimationEffect... effects);
  undefined append (AnimationEffect... effects);
};

[Exposed=Window]
interface AnimationNodeList {
    readonly attribute unsigned long length;
    getter AnimationEffect? item (unsigned long index);
};

[Exposed=Window]
interface SequenceEffect : GroupEffect {
  constructor(sequence<AnimationEffect>? children,
              optional (unrestricted double or EffectTiming) timing = {});

  SequenceEffect clone ();
};

partial interface KeyframeEffect {
    attribute IterationCompositeOperation    iterationComposite;
};

partial dictionary KeyframeEffectOptions {
    IterationCompositeOperation iterationComposite = "replace";
};

enum IterationCompositeOperation { "replace", "accumulate" };

callback EffectCallback = undefined (double? progress,
                                (Element or CSSPseudoElement) currentTarget,
                                Animation animation);