[css-animations] OM and keyframes having same key

• From: Daniel Glazman <daniel.glazman@disruptive-innovations.com>
• Date: Tue, 11 Mar 2014 11:26:18 +0100
• To: www-style <www-style@w3.org>
• Message-ID: <531EE4CA.2040500@disruptive-innovations.com>

The spec says about CSSKeyframesRule.deleteRule():

   ...deletes the CSSKeyframeRule with the passed key.

But the spec explicitely allows multiple keyframe rules for same key,
saying that in that case the last one specified wins.

Then I assume only the last one specified for a given key is preserved
in the OM. I think it should noted somewhere.

On a similar note, the keyText attribute of CSSKeyframeRule is
read/write. That means it is possible to programmatically assign a
CSSKeyframeRule's key to an existing key in the parent
CSSKeyframesRule... Section 6.2.2 of the spec does not say what happens
in that case and I think it should. In particular, what happens:

- if the assigned keyText is invalid ; should it throw anything?
- if the assigned keyText already exists

Same thing about CSSKeyframeRule.appendRule(). If the key specified by 
the passed string already exists in cssRules, I suppose the existing 
Keyframe should be deleted. This is not specified in the current ED.

</Daniel>

Received on Tuesday, 11 March 2014 10:26:42 UTC