[css-houdini-drafts] [css-typed-om] "get all values from a StylePropertyMap" assumes underlying model might not be list

• From: L. David Baron via GitHub <sysbot+gh@w3.org>
• Date: Fri, 26 Jan 2018 23:00:32 +0000
• To: public-houdini-archive@w3.org
• Message-ID: <issues.opened-292057339-1517007631-sysbot+gh@w3.org>

dbaron has just created a new issue for https://github.com/w3c/css-houdini-drafts:

== [css-typed-om] "get all values from a StylePropertyMap" assumes underlying model might not be list ==
Typed OM defines an [algorithm to get all values from a `StylePropertyMap`](https://drafts.css-houdini.org/css-typed-om-1/#get-all-values-from-a-stylepropertymap).  This says:

> 3. If StylePropertyMap’s property model contains an entry for property:
>
>     1. If property is a list-valued property, return the list of values assigned to that property.
>
>     2. If property is not a list-valued property, let values initially be the empty list and append the value assigned to the property to this list and return values.

However, earlier the spec [says](https://drafts.css-houdini.org/css-typed-om-1/#the-stylepropertymap):

> A StylePropertyMapReadOnly object has an associated property model, which is a list of property - sequence<CSSStyleValue> pairs.

Given this, it's not clear why this distinction between list-valued and non-list-valued properties needs to be made; they're all represented as `sequence<CSSStyleValue>`.

Please view or discuss this issue at https://github.com/w3c/css-houdini-drafts/issues/571 using your GitHub account

Received on Friday, 26 January 2018 23:00:39 UTC