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Re: [csswg-drafts] [web-animations-1] Alternative to FillAnimation: replace events (#3689)

From: Brian Birtles via GitHub <sysbot+gh@w3.org>
Date: Tue, 02 Apr 2019 03:51:12 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-478834013-1554177071-sysbot+gh@w3.org>
Incorporating some of the suggestions that have come up on this thread, the proposed IDL might be something like:

```webidl
enum RemoveState {
  "no", // Not yet removed
  "removed",
  "persisted"
};

partial interface Animation {
  attribute EventHandler onremove;
  readonly attribute RemoveState removed;

  void commitComputedStyles(optional sequence<DOMString> propertiesToCommit);
  void persist();
};

[Exposed=Window,
 Constructor (DOMString type, optional AnimationRemoveEvent eventInitDict)]
interface AnimationRemoveEvent : Event {
    readonly attribute double? timelineTime;
    readonly attribute CSSStyleDeclaration computedStyle;
    readonly attribute StylePropertyMapReadOnly computedStyleMap;
};

dictionary AnimationRemoveEventInit : EventInit {
  double? timelineTime = null;
  CSSStyleDeclaration computedStyle;
  StylePropertyMapReadOnly computedStyleMap;
};
```

Or, alternatively:

```webidl
enum CommitKeyword = { "all", "none" };

partial dictionary KeyframeEffectOptions {
  commit: CommitKeyword or sequence<string> = "none";
};

partial interface KeyframeEffect {
  readonly attribute (CommitKeyword or FrozenArray<string>) commit;
};
```

Unfortunately, I don't think the latter alone covers the case where the author wants to persist the full effect so I suspect we would need most of the first part too (but probably minus the `commitComputedStyles` part).

-- 
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Received on Tuesday, 2 April 2019 03:51:13 UTC

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