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WIP: Use inner blocks for lists #35870

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WIP: Use inner blocks for lists #35870

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dmsnell
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@dmsnell dmsnell commented Oct 22, 2021

Lists in HTML are more like containers than sequences of paragraphs. How can we make list blocks generic containers?

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Size Change: -848 B (0%)

Total Size: 1.16 MB

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@gziolo
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gziolo commented Oct 25, 2021

There should be some prior work from @ellatrix to bring nested blocks support for the List block. I know that @oandregal worked on the same type of changes to the Query block in #25892 but he put it on hold because of his involvement in the Global Styles project.

@gziolo gziolo added the [Block] List Affects the List Block label Oct 25, 2021
@ellatrix
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Quote should be much, much easier than lists.

A list item also needs to support nesting a whole other list after the text:

<ol>
  <li>item 1
    <ol>...</ol>
  </li>
</ol>

So there could be a list block and a list item block which can be an inner block of the list block. But then inside the list item block it needs to be possible to append another list block. The contents of this sublist are tied to the parent list item's text.

Similarly when moving a list item up or down, the sublist tied to that list item should move up or down with it.

@dmsnell
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dmsnell commented Oct 26, 2021

Quote should be much, much easier than lists.

It's on my TODO list to jump over to #25892 and see if there's any way I can help with that one.

A list item also needs to support nesting a whole other list after the text:

if I understand you properly this is already supported even in this PR (although it's not like the current state of this exploratory PR is something that we could talk about merging). Still, the list-item block in conception is a container like the group block and doesn't have any restriction on what you put in it. The difference in your HTML sample is that we would have a <p> wrapped around that item 1 since it would be a paragraph block. For list titles, on the other hand, I have envisioned providing something more akin to the recommendation in the HTML spec providing a <figure><figcaption>… construction.

@georgeh
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georgeh commented Nov 8, 2021

This would make #31733 significantly easier, since it would be transforming one block tree to another instead of parsing HTML.

@gziolo
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gziolo commented Jul 11, 2022

#39487 added similar functionality. The alternative PR keeps the old and new implementation as it is necessary for the transition period. Let's close this one as a duplicate.

@gziolo gziolo closed this Jul 11, 2022
@gziolo gziolo deleted the dmsnell/nested-lists branch July 11, 2022 09:36
@gziolo gziolo added the [Status] Duplicate Used to indicate that a current issue matches an existing one and can be closed label Jul 11, 2022
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