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add TokenStreamValue and VariableReferenceValue #169

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Apr 4, 2016
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add TokenStreamValue and VariableReferenceValue #169

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17 changes: 15 additions & 2 deletions css-typed-om/Overview.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -52,8 +52,21 @@ The <dfn method for=StyleValue>parse(DOMString <var>property</var>, DOMString <v
method attempts to parse <var>cssText</var> as a valid {{StyleValue}} or sequence&lt;{{StyleValue}}> for
<var>property</var>, returning null on failure.

Issue(41): Need to add a section describing values that reference custom properties. Should StyleValue handle
this or should it be a subclass?
{{TokenStreamValue}} objects {#tokenstreamvalue-objects}
----------------------------------------------

<pre class='idl'>
interface TokenStreamValue : StyleValue {
iterable<(DOMString or VariableReferenceValue)>;
};

interface VariableReferenceValue {
attribute string variable;
attribute TokenStreamValue fallback;
};
</pre>

{{TokenStreamValue}} objects represent unsupported values and values that reference custom properties. They represent a list of string fragments and variable references.

The {{StylePropertyMap}} {#the-stylepropertymap}
================================================
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