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Block editor: add consolidated styles to store #34156

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@ramonjd ramonjd commented Aug 19, 2021

What this PR does

This is an experimental PR meant to spark discussion and seek guidance only.

It adds consolidated styles (global and theme styles) to the post editor store, and making it accessible to style block supports hooks.

At first, and just to test propositions/ideas, we're working with border styles in order to delay having to parse CSS vars in the consolidated style object. It might be that we can used merged consolidated styles for all properties.

defaults-border

Why would we want to do this?

In the post editor, we can override global and theme styles for specific blocks using sidebar controls for padding, border, margin and so on.

We don't, however, know about the underlying style values – those set in global or theme styles – we're overriding.

Sharing consolidated styles in the post editor would allow us to:

  • fill default/empty controls values to indicate to the user the values they are overriding
  • check for pre-defined values before we set defaults in the post editor. For example, we might like to set a default border style of 'solid' if a user changes the border width value, but use any pre-defined border style value set in global styles or elsewhere.

For relevant context, see the comments in border style default controls and related discussions.

The objective

The PR seeks to answer the following questions:

  1. Is it okay to add consolidated styles to the block editor store? Should we be adding anything else?
  2. Are there valid use cases for doing so?
  3. If yes to 1 and 2, what are the most reasonable steps forward?

Thank you!

@ramonjd ramonjd added [Type] Question Questions about the design or development of the editor. [Status] In Progress Tracking issues with work in progress [Type] Experimental Experimental feature or API. [Type] Discussion For issues that are high-level and not yet ready to implement. labels Aug 19, 2021
@ramonjd ramonjd self-assigned this Aug 19, 2021
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Size Change: +118 B (0%)

Total Size: 1.03 MB

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build/editor/index.min.js 37.5 kB +3 B (0%)
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compressed-size-action

[ styleProperty ]: {
...consolidatedStyles[ styleProperty ],
...userStyles[ styleProperty ],
},
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@ramonjd ramonjd Aug 19, 2021

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This doesn't take into account that some values will be var('--some-var-name').

Nor have I asked the question whether we should take it into account at all.

If yes, we could see if pre-filling with getPropertyValue('--some-var-name') is possible.

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If yes, we could see if pre-filling with getPropertyValue('--some-var-name') is possible.

Turns out we can access CSS var values in presets: https://github.com/WordPress/gutenberg/pull/34178/files#diff-c7f239b002e1dfa2d70dc9ac84af4975a6c1cd63d00f0c14e4510c5a6a9ecc93

@ramonjd ramonjd changed the title Consolidated styles: Block editor: add consolidated styles to store Aug 19, 2021
* const consolidatedStyles = useConsolidatedStyles( props.attributes?.style, 'border' );
* ```
*/
export default function useConsolidatedStyles( userStyles, styleProperty ) {
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TODO: memoize this

@aaronrobertshaw
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Thank you for working on this @ramonjd 🏅

There is currently a second PR tackling this issue. #34178

It might be a good idea to cross-check between the two PRs and make sure whichever we proceed with covers all bases.

@ramonjd
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ramonjd commented Aug 20, 2021

It might be a good idea to cross-check between the two PRs and make sure whichever we proceed with covers all bases.

Thanks for the heads up. 🙇

I plan on having a look at #34178 today. It's a lot further along, so I would guess that I could retire this PR.

#34178 also answered my questions about css vars, and confirms the direction I was heading in was nearly right :)

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ramonjd commented Aug 20, 2021

Closing in favour of #34178

@ramonjd ramonjd closed this Aug 20, 2021
@ramonjd ramonjd deleted the try/add-consolidate-styles-to-editor-store branch August 20, 2021 04:35
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