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Block Comments: Highlight block with new toggleBlockSpotlight private API#72126

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t-hamano merged 10 commits intotrunkfrom
block-comments-spotlight
Oct 8, 2025
Merged

Block Comments: Highlight block with new toggleBlockSpotlight private API#72126
t-hamano merged 10 commits intotrunkfrom
block-comments-spotlight

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@t-hamano t-hamano commented Oct 7, 2025

Closes #71891

What? Why?

This PR highlights the block when a block comment is selected, regardless of whether Spotlight mode is enabled or not.

Currently, blocks with comments are highlighted in two ways:

  1. When a comment is selected, its block is scrolled into view. This is achieved by the selectBlock action with its second parameter set to null.
  2. When the mouse hovers over a comment thread, a blue outline appears around the block. This is achieved by the toggleBlockHighlight action.

To make the blocks linked to the comment more prominent, this PR makes other blocks opaque, similar to Spotlight mode.

How?

  • Introduces the private toggleBlockCommentSelected toggleBlockSpotlight action and isBlockCommentSelected hasBlockSpotlight selector.
  • Triggers toggleBlockCommentSelected toggleBlockSpotlight when a comment is selected. Blocks with selected comments are given the is-block-comment-selected CSS class.
  • This state is reset when the comment is closed, another block is selected, etc.

Testing Instructions

  • Insert multiple blocks and comment on them
  • Open the comment sidebar and click any of the comments.
  • Confirm that the related block is spotlighted.
  • Clicking somewhere other than the block should disable the spotlighted state.
  • Enable Spotlight mode. Comment selection behavior should not affect spotlight mode.

Screenshots or screencast

9c717b808f45c6d36ca66a13e3aa0e9f.1.mp4

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github-actions bot commented Oct 7, 2025

Size Change: +197 B (+0.01%)

Total Size: 1.96 MB

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ℹ️ View Unchanged
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@t-hamano t-hamano added [Type] Enhancement A suggestion for improvement. Needs Design Feedback Needs general design feedback. [Feature] Notes Phase 3 of the Gutenberg roadmap around block commenting labels Oct 7, 2025
@t-hamano t-hamano requested review from a team, Mamaduka, adamsilverstein and ellatrix October 7, 2025 10:05
@t-hamano t-hamano marked this pull request as ready for review October 7, 2025 10:08
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Co-authored-by: t-hamano <wildworks@git.wordpress.org>
Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>
Co-authored-by: jasmussen <joen@git.wordpress.org>
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@Mamaduka
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Mamaduka commented Oct 7, 2025

I know these are private actions/selectors, but terminology is still specific to Block Comments. A more general solution, even if it's private for now, seems more suitable.

What I had in mind:

  • A toggleBlockSpotlight action, which is the same as toggleBlockHighlight, but handles block spotlight. I think the state reducer can be the same.
  • A hasBlockSpotlight selector or whatever you want to call it, which toggles the existing CSS classes.

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t-hamano commented Oct 7, 2025

@Mamaduka Thanks for the review!

Personally, I avoided toggleBlockSpotlight and hasBlockSpotlight because they seemed like they could be confused with spotlight mode. I don't have a strong opinion on the terminology, but what do you think?

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github-actions bot commented Oct 7, 2025

Flaky tests detected in f84928b.
Some tests passed with failed attempts. The failures may not be related to this commit but are still reported for visibility. See the documentation for more information.

🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/18337000273
📝 Reported issues:

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Looks great at a glance. I'm now subscribed to this PR and hope to find time for a more thorough review (e.g. how does it look with the pinned sidebar closed), but it looks on a decidedly good track. Kudos.

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Mamaduka commented Oct 7, 2025

Personally, I avoided toggleBlockSpotlight and hasBlockSpotlight because they seemed like they could be confused with spotlight mode.

This action/selector "puts a spotlight" on a block, which is why I suggested those general names. There might be other features that could benefit from using this method in the future.

It's not a blocker; we can rename them if needed.

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Mamaduka commented Oct 7, 2025

We'll have to modify the selectors' return value, but was there any downside to updating the isFocusMode condition below, vs useBlockProps?

return {
isOutlineMode: outlineMode && ! isTyping(),
isFocusMode: focusMode,
temporarilyEditingAsBlocks: getTemporarilyEditingAsBlocks(),
};

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t-hamano commented Oct 7, 2025

We'll have to modify the selectors' return value, but was there any downside to updating the isFocusMode condition below, vs useBlockProps?

@Mamaduka Sorry, maybe I don't understand the question, but do you mean we will also be incorporating this new API into Spotlight mode?

how does it look with the pinned sidebar closed

@jasmussen It will look like this:

995a639874549a70f23a970c208d3225.mp4

@t-hamano t-hamano changed the title Block Comments: Highlight block with new toggleBlockCommentSelected private API Block Comments: Highlight block with new toggleBlockSpotlight private API Oct 7, 2025
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Mamaduka commented Oct 7, 2025

@t-hamano, I was suggesting reusing the existing condition in the linked file and the CSS styles that are already there. Just a random thought, it's not a blocker.

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This looks good to me! I wonder if we should also fade the unrelated comments, just like we fade the blocks in the canvas.

image

A few other thoughts. They're unrelated to this PR, so please let me know if I should take them elsewhere.

  1. I don't think we need to expand the thread when a comment is selected. It'd get out of hand for longer conversations.
  2. Could we replace the gray background with white for a cleaner look and better readability?
  3. We don't need the user's name and avatar at the end of the thread. It's perfectly fine to display just the input field and their details after they publish the comment.
image

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t-hamano commented Oct 7, 2025

@jarekmorawski Thanks for the feedback!

As for the proposed design change, it might be better to open a new issue. This PR is just to highlight the block, so we won't make any changes to the comment itself.

Some useful links:

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@t-hamano, do you mind rebasing the branch on top of the trunk? Having trouble building it even after multiple npm ci runs.

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A meta thought: @adamsilverstein has been exploring collapsed versions of the comment threads when there isn't room to show them perfectly aligned with the block itself. Not a blocker for this PR, probably not for release either, but it will very probably benefit the particular pattern used in the example here.

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I wonder if we should also fade the unrelated comments, just like we fade the blocks in the canvas.

Nice instincts. Important to balance that also with the gray color in the inactive comments, as well as the contexts for legibility. It may be fine.

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t-hamano commented Oct 8, 2025

I wonder if we should also fade the unrelated comments, just like we fade the blocks in the canvas.

Nice instincts. Important to balance that also with the gray color in the inactive comments, as well as the contexts for legibility. It may be fine.

I see, let's try this in a separate PR.

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Works as expected ✅

@t-hamano t-hamano merged commit 6334bb9 into trunk Oct 8, 2025
70 of 71 checks passed
@t-hamano t-hamano deleted the block-comments-spotlight branch October 8, 2025 07:57
@github-actions github-actions bot added this to the Gutenberg 21.9 milestone Oct 8, 2025
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Just noting that this PR had an impact on "block selection" metric. Any idea what caused this?

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Mamaduka commented Oct 8, 2025

Thanks for pointing that out, @youknowriad!

Yes, that seems like a big jump - https://www.codevitals.run/project/gutenberg/focus.

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t-hamano commented Oct 9, 2025

Is it because hasBlockSpotlight has many actions to unblock the spotlight?

case 'TOGGLE_BLOCK_SPOTLIGHT':
const { clientId, hasBlockSpotlight: _hasBlockSpotlight } = action;
if ( _hasBlockSpotlight ) {
return clientId;
} else if ( state === clientId ) {
return null;
}
return state;
case 'SELECT_BLOCK':
if ( action.clientId !== state ) {
return null;
}
return state;
case 'SELECTION_CHANGE':
if (
action.start?.clientId !== state ||
action.end?.clientId !== state
) {
return null;
}
return state;
case 'CLEAR_SELECTED_BLOCK':
return null;

Can we somehow measure this metric locally or before the merge?

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Mamaduka commented Oct 9, 2025

@t-hamano, the performance test CI job outputs the results, but it's not as reliable as CodeVitals - https://github.com/WordPress/gutenberg/actions/runs/18337000307.

You can also run tests locally for debugging - npm run test:performance -- post-editor.spec.js. Do something like test.describe.only( 'Selecting blocks' to run focused tests.

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Mamaduka commented Oct 9, 2025

@t-hamano, push an experiment for an alternative method - #72194, let's see if it has any effect on block selection performance.

sidharthpandita1 pushed a commit to sidharthpandita1/gutenberg that referenced this pull request Oct 10, 2025
… API (WordPress#72126)

* Block Comments: Highlight block with new toggleBlockCommentSelected private API

* Rename

* Combine useDispatch

* Update Comment

* Use correct CSS selector

* Change conditions for disabling spotlight

* Allow changing text selection for spotlighted block without removing spotlight

Co-authored-by: t-hamano <wildworks@git.wordpress.org>
Co-authored-by: Mamaduka <mamaduka@git.wordpress.org>
Co-authored-by: jasmussen <joen@git.wordpress.org>
Co-authored-by: jarekmorawski <jarekmorawski@git.wordpress.org>
Co-authored-by: jeffpaul <jeffpaul@git.wordpress.org>
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[Feature] Notes Phase 3 of the Gutenberg roadmap around block commenting Needs Design Feedback Needs general design feedback. [Type] Enhancement A suggestion for improvement.

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Block Commenting: Highlight attached block using spotlight scaffolding

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