label-template on ol/li

[opoudjis]

metanorma/firelight#41

As metanorma/metanorma-iso#319 https://github.com/metanorma/metanorma-iso/blob/main/lib/isodoc/iso/html/style-iso.scss will show, changing the rendering in HTML of a ordered list label is convoluted.

The only way this is going to be realisable at all is by providing a separate value for the rendering template: the label needs to be kept alone as a value, which would be the input into any CSS counter, and then styled by the template:

ol[class="roman"] > li::before {
  counter-increment: roman;
  content: counter(roman, lower-roman)") "
}

The CSS would need to be content: %), with % replaced by the counter value derived from label: b.

I will add a label-template attribute to ol/li, which by default will be "%." and in this instance will be "%)".

[ronaldtse]

We should probably generalize this task because an unordered list also have list labels that are customized depending on list levels and indent levels.

[opoudjis]

Do you mean unordered lists? This is as generalised as ordered list labels get.

[ronaldtse]

Yes indeed. Updated the comment.

[opoudjis]

We need to provide list hierarchy / label styling definitions in the presentation XML so that renderers like PDF and Firelight can render them properly:

unordered lists
ordered lists
We do not want individual XML downstream renderers making up their own implementation for list styling, references and labels.