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[Components - ToggleGroupControlOption]: Calculate width from button content and remove LabelPlaceholderView #39345

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merged 3 commits into from
Mar 11, 2022

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ntsekouras
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@ntsekouras ntsekouras commented Mar 10, 2022

What?

I made a POC for adding icon support in ToggleGroupControl component and saw that we calculate the width of the labels in a weird and not proper way IMO. What we are doing now is having css for the main button that positions absolute the element and centers it with a translate rule, and we use LabelPlaceholderView which is not visible(visibility: hidden;) but still in the document label to calculate the width. This seems wrong to me because:

  1. We now only support showing the label which has the same content with LabelPlaceholderView. If we wanted to change that - like icons support - we cannot do that.
  2. In LabelPlaceholderView we also have aria-hidden which means the element is not exposed to an accessibility API, so it seems that it was just there for width calculation to me..

So to sum up I think LabelPlaceholderView is completely obsolete - but feel free to correct me if I'm missing something. 😄

Why?

Code quality change that will also enable us to add icon support

Testing Instructions

  1. Everything should work just as before with no regressions at all - either visual or a11y.
  2. Check existing usages like FontSizePicker or in PostFeaturedImage when you set a height, etc... Also check the stories in storybook.

@ntsekouras ntsekouras added [Type] Code Quality Issues or PRs that relate to code quality [Package] Components /packages/components labels Mar 10, 2022
@ntsekouras ntsekouras requested a review from ajitbohra as a code owner March 10, 2022 11:14
@ntsekouras ntsekouras self-assigned this Mar 10, 2022
@ntsekouras ntsekouras changed the title [Components - ToggleGroupControlOption]: Calculate widths from button content and remove LabelPlaceholderView [Components - ToggleGroupControlOption]: Calculate width from button content and remove LabelPlaceholderView Mar 10, 2022
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Size Change: -53 B (0%)

Total Size: 1.16 MB

Filename Size Change
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LGTM

So to sum up I think LabelPlaceholderView is completely obsolete

I had also concluded the same and removed it in a stale draft PR (also made for reasons tangential to the LabelPlaceholderView).

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So to sum up I think LabelPlaceholderView is completely obsolete - but feel free to correct me if I'm missing something. 😄

It does look like it. It'd be interesting to see when/why this was introduced, in order to understand this strange layout pattern.

The only difference that I can see is that each ToggleGroupOption now looks slightly narrower:

toggle-group-control-diff.mp4

This is probably caused by the fact that the placeholder view (which was deleted in this PR) had font-weight: bold; among its styles, which consequently made its text take more horizontal space — although I don't see it as an issue.

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Thanks for the reviews!

It does look like it. It'd be interesting to see when/why this was introduced, in order to understand this strange layout pattern.

I think this was just code written quite a long time ago, as part of the initial creation of g2 components and was ported this way. Similar case would be the aspectRatio component that it turned out we didn't need at all right now.

This is probably caused by the fact that the placeholder view (which was deleted in this PR) had font-weight: bold; among its styles, which consequently made its text take more horizontal space — although I don't see it as an issue.

Right! If we want to tweak some styles there we should do it in the visible label and actually I think we discuss this in the icons PR I'm going to make, because we also have some padding right now.

I had also concluded the same and removed it in a stale draft PR

💯

@ntsekouras ntsekouras merged commit e400b90 into trunk Mar 11, 2022
@ntsekouras ntsekouras deleted the update/toggle-group-control-option-styles branch March 11, 2022 06:59
@github-actions github-actions bot added this to the Gutenberg 12.9 milestone Mar 11, 2022
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gziolo commented Mar 11, 2022

I cherry-picked this PR into Gutenberg 12.8 release to prevent issues with the merge conflicts in the CHANGELOG file while publishing to npm with the automated script.

@gziolo gziolo modified the milestones: Gutenberg 12.9, Gutenberg 12.8 Mar 11, 2022
gziolo pushed a commit that referenced this pull request Mar 11, 2022
…content and remove `LabelPlaceholderView` (#39345)

* [Components - ToggleGroupControlOption]: Calculate widths from button content and remove `LabelPlaceholderView`

* update changelog

* fix tests
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