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Extract a BorderPanel component as a reusable component between Global Styles and Block Inspector #48636

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merged 4 commits into from
Mar 2, 2023

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youknowriad
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@youknowriad youknowriad commented Mar 1, 2023

Related to #37064 and #47348 and similar to #47356 and #48070

What?

A year ago now, I've opened a discussion in #37064 that proposes unifying the components that are used in the block inspector and global styles. The idea is that we'd have components that look like this:

function SomePanel( { value, onChange, inheritedValue } ) {

}

That component would render a panel used to edit a given style (say "typography" or "colors"), the value has a well specified prop (that is mapped over the "style" object of a block or a global style "node" ). The idea is that we could use that exact same panel in both places, the only difference is a wrapper that map the "value" to the right place:

  • block attributes for the block inspector
  • theme.json (global styles) for the global styles UI

Recently we realized this vision for the TypographyPanel and DimensionsPanel and the current PR does the exact same thing for the BorderPanel and uses the new UI component for both inspector controls and global styles.

To do

  • Test properly that there's no unexpected differences in behavior between this PR and trunk. (especially regarding the preset colors...)

Testing Instructions

  • you can test the "border" panels in global styles and ensure that they still work as expected.
  • you can also test the "border" panels in the block inspector.

@youknowriad youknowriad added [Type] Code Quality Issues or PRs that relate to code quality Global Styles Anything related to the broader Global Styles efforts, including Styles Engine and theme.json labels Mar 1, 2023
@youknowriad youknowriad requested a review from ellatrix as a code owner March 1, 2023 13:54
@youknowriad youknowriad self-assigned this Mar 1, 2023
return colorObject ? colorObject.color : colorValue;
},
[ colors ]
);
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Note that I have to encode/decode colors every time in this component. Personally, I think that shouldn't happen in this component but instead it should be built-in in the lower level components BorderBoxControl... until ColorPalette because they all receive the "colors" presets as argument.

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Basically right now, if a user picks a "red" color from a palette, or picks a "red" color with the same value as a custom color, they are considered the same and automatically switched to "palette" colors. The problem is that the user intention might be different.

  • If I pick a palette color, I expect the value to update as I update the palettes
  • If I pick a custom color, I expect the value to be static.

This behavior is broken now and the value is always dynamic but this is how it works in trunk too, so I kept it as is.

return updatedSettings;
}, [ parentSettings, supportedStyles, supports ] );
}

export function useColorsPerOrigin( settings ) {
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This hook already exists but it's dependent on useSetting. I updated it here to have one that is independent of any context... Hopefully by the time we finish these refactors, we should be able to remove the other one.

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Actually I managed to use this in the other one to avoid duplication.

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Size Change: +689 B (0%)

Total Size: 1.34 MB

Filename Size Change
build/block-editor/index.min.js 196 kB +641 B (0%)
build/block-library/index.min.js 201 kB +2 B (0%)
build/components/index.min.js 207 kB +470 B (0%)
build/edit-site/index.min.js 63.5 kB -424 B (-1%)
ℹ️ View Unchanged
Filename Size
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github-actions bot commented Mar 1, 2023

Flaky tests detected in 9c8a744.
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/4304257113
📝 Reported issues:

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Thank you for continuing the efforts to refactor all these panels @youknowriad 👍

The extracted border panel is testing well for me, I didn't spot any regressions comparing it against trunk's behaviour.

The one issue I encountered appeared to be a separate problem preventing global styles from being reset (fixed in #48648 I believe). After rebasing this branch locally it all worked smoothly.

For both Global Styles and the Block Inspector, I tested the following;

✅ Flat borders - single border value for all sides
✅ Flat border radii - single radius value for all corners
✅ Split borders - differing borders per side
✅ Consolidation of split borders - same value for each side gets reduced to flat value
✅ Split border radii - differing radius per corner
✅ Resetting individual controls e.g. border or border radius
✅ Resetting all border controls via reset all
✅ Configuring different default controls for the panel

Looks like you've already fixed the failing native e2e as well. Nice work 🚀

I'm happy to approve this as it LGTM but you're welcome to wait on a second set of eyes on the code changes also.

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Thanks Aaron, let's get this one in and continue on other panels.

@talldan
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talldan commented Apr 5, 2023

@youknowriad it looks like there's a regression from this PR - #49594.

Block border is always serialised now in the longer format that I mentioned in my comment. I had a brief chat to @aaronrobertshaw about it, and it sounds like global styles has always saved border in the longer format, but blocks previously preferred the short format when sides are linked.

It had a look at a fix and considered adding a forceSplitBorders prop that global styles could use. It's my first time seeing this code, so I thought I'd see what ideas you had.

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youknowriad commented Apr 5, 2023

@talldan Thanks for the ping Dan. What about unifying the format between both?

Can we use the long (or short) format in both and have the "engines" understand both for now (backward compatibility)

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talldan commented Apr 5, 2023

Possibly. There was an explanation here about why global styles was always using the long format:

// As we can't conditionally generate styles based on if other
// style properties have been set we need to force split border
// definitions for user set border styles. Border radius is derived
// from the same property i.e. `border.radius` if it is a string
// that is used. The longhand border radii styles are only generated
// if that property is an object.
//
// For borders (color, style, and width) those are all properties on
// the `border` style property. This means if the theme.json defined
// split borders and the user condenses them into a flat border or
// vice-versa we'd get both sets of styles which would conflict.

@aaronrobertshaw knows more.

In the table block, it might be possible to interpret has-individual-borders as when the border sides have differing values, rather than detecting the long format, but that wouldn't be completely backwards compatible.

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That comment explains the gist of it. I'll try and expand more on it shortly but in a few minutes I'll have a potential fix up for the issue Dan raised and another small bug I found in this PR.

The fix is working locally for me and follows Dan's suggestion of a forceSplitBorders prop. Once I get the draft up feel free to change that approach if desired.

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Potential fix is up in #49603

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 // As we can't conditionally generate styles based on if other 
 // style properties have been set we need to force split border 
 // definitions for user set border styles.

I have a vague repressed memory of some issues with shorthand vs longhand styles and their specificity. Forcing global styles to split the border definitions avoided that at the cost of extra CSS. In general, however there was feedback on avoiding bloated CSS which combined with the need to still support the flat borders for BC lead to the current state.

I'm out of time today but will happily dig further into this tomorrow, whether that is getting the full back story, testing alternate approaches e.g. unifying to longhand etc, or iterating on the current PR.

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