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Try: Remove iframe 100% width rule. #38614

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merged 1 commit into from
Apr 4, 2022
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jasmussen
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Description

Addresses #38586.

The following rule is output in the post editor canvas, but not in the site editor canvas:

	iframe {
		width: 100%;
	}

As discussed in the ticket above, it's creating an inconsistency where it appears to be contained in editor, but not on the frontend. This PR removes the rule, bringing consistency between post editor and frontend, but also post editor and site editor.

Note: this exact same rule was removed in the past as well, in #18240, and then added back again in #18287. Before merging this one, it's worth finding out exactly why it was added back again.

Testing Instructions

  1. Try the code example in Consider enforcing iFrame max width of 100% on the front-end for block themes #38586
  2. Observe the editor showing the same overflowing embed (it would not overflow if the embed block was used)
  3. Try the rest of the post editor with various content and verify no change compared to trunk.

Checklist:

  • My code is tested.
  • My code follows the WordPress code style.
  • My code follows the accessibility standards.
  • I've tested my changes with keyboard and screen readers.
  • My code has proper inline documentation.
  • I've included developer documentation if appropriate.
  • I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).
  • I've updated related schemas if appropriate.

@jasmussen jasmussen added the CSS Styling Related to editor and front end styles, CSS-specific issues. label Feb 8, 2022
@jasmussen jasmussen requested a review from kjellr February 8, 2022 08:54
@jasmussen jasmussen self-assigned this Feb 8, 2022
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github-actions bot commented Feb 8, 2022

Size Change: -17 B (0%)

Total Size: 1.14 MB

Filename Size Change
build/edit-post/style-rtl.css 7.14 kB -9 B (0%)
build/edit-post/style.css 7.13 kB -8 B (0%)
ℹ️ View Unchanged
Filename Size
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build/admin-manifest/index.min.js 1.1 kB
build/annotations/index.min.js 2.75 kB
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compressed-size-action

@jasmussen
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Not at all urgent, but in case you have a cycle to take a look, @MaggieCabrera, I'd love your eyes on this one. If the suggestion is "let's keep it", I'm totally fine with that as well.

@MaggieCabrera
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I've been looking at the back and forth with this rule and overall it seems like the right to go about this is removing it. There's certainly the main issue where frontend and editor don't match, which alone is enough to justify this PR.

I've tested the following on a block theme without extra CSS:


<!-- wp:embed {"url":"https://www.youtube.com/watch?v=Nl6U7UotA-M","type":"video","providerNameSlug":"youtube","responsive":true,"className":"wp-embed-aspect-16-9 wp-has-aspect-ratio"} -->
<figure class="wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio"><div class="wp-block-embed__wrapper">
https://www.youtube.com/watch?v=Nl6U7UotA-M
</div><figcaption>test youtube</figcaption></figure>
<!-- /wp:embed -->

<!-- wp:embed {"url":"https://twitter.com/photomatt/status/868657763970404352","type":"rich","providerNameSlug":"twitter","responsive":true} -->
<figure class="wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter"><div class="wp-block-embed__wrapper">
https://twitter.com/photomatt/status/868657763970404352
</div><figcaption>test tweet</figcaption></figure>
<!-- /wp:embed -->

<!-- wp:embed {"url":"https://make.wordpress.org/core/2017/01/17/editor-technical-overview/","type":"wp-embed","providerNameSlug":"make-wordpress-core"} -->
<figure class="wp-block-embed is-type-wp-embed is-provider-make-wordpress-core wp-block-embed-make-wordpress-core"><div class="wp-block-embed__wrapper">
https://make.wordpress.org/core/2017/01/17/editor-technical-overview/
</div><figcaption>test url</figcaption></figure>
<!-- /wp:embed -->

<!-- wp:code -->
<pre class="wp-block-code"><code>
<iframe src="https://www.youtube.com/embed/OpiH_P9aGhQ" title="YouTube video player" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="" width="1120" height="630" frameborder="0"></iframe></code></pre>
<!-- /wp:code -->

And they work as expected with this PR. The embed block already has a max-width:100% which is what I would expect to avoid the iframes from overflowing. The code example that Kjell mentioned on the original issue would be better solved directly on the block markup if we think we should do so, rather than the blanket rule for all iframes.

@jasmussen
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Thank you, those are excellent thoughts. I agree just syncing up editor and frontend is enough justification. I'll land this and be vigilant about any followups we need to make, including outputting this rule also on the frontend.

@jasmussen jasmussen merged commit 86ed6c5 into trunk Apr 4, 2022
@jasmussen jasmussen deleted the try/remove-iframe-rule branch April 4, 2022 08:50
@github-actions github-actions bot added this to the Gutenberg 13.0 milestone Apr 4, 2022
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