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Add preference to switch between AA & AAA levels for color-contrast checks #41363

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Add preference to switch between AA & AAA levels for color-contrast checks #41363

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a1493c8
Use luminance instead of brightness
aristath May 26, 2022
6ca8c9b
Add a strictColorContrastChecks feature
aristath May 26, 2022
6c420b1
Improve help text
aristath May 27, 2022
8c9f361
Improve help text to show the currently checked level
aristath May 27, 2022
edf28c5
tweak checks & regen snapshot
aristath May 27, 2022
b4b5538
use useSelect
aristath Jun 20, 2022
8e24ba2
Update colord to v2.9.3 consistently everywhere
aristath Dec 1, 2023
2fc63ec
Added changelog entry
aristath Dec 1, 2023
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20 changes: 10 additions & 10 deletions package-lock.json
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2 changes: 2 additions & 0 deletions packages/block-editor/CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@

## Unreleased

- Added option to allow switching between AA/AAA color-constrast checks ([41363](https://github.com/WordPress/gutenberg/pull/41363)).

## 12.15.0 (2023-11-29)

## 12.14.0 (2023-11-16)
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2 changes: 1 addition & 1 deletion packages/block-editor/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -66,7 +66,7 @@
"@wordpress/wordcount": "file:../wordcount",
"change-case": "^4.1.2",
"classnames": "^2.3.1",
"colord": "^2.7.0",
"colord": "^2.9.3",
"deepmerge": "^4.3.0",
"diff": "^4.0.2",
"dom-scroll-into-view": "^1.2.1",
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18 changes: 15 additions & 3 deletions packages/block-editor/src/components/contrast-checker/index.js
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Expand Up @@ -11,6 +11,8 @@ import { colord, extend } from 'colord';
import { __, sprintf } from '@wordpress/i18n';
import { Notice } from '@wordpress/components';
import { speak } from '@wordpress/a11y';
import { useSelect } from '@wordpress/data';
import { store as preferencesStore } from '@wordpress/preferences';

extend( [ namesPlugin, a11yPlugin ] );

Expand All @@ -27,6 +29,16 @@ function ContrastChecker( {
} ) {
const currentBackgroundColor = backgroundColor || fallbackBackgroundColor;

const { strictContrastCheck } = useSelect(
( select ) => ( {
strictContrastCheck: select( preferencesStore ).get(
'core/edit-post',
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@talldan talldan Dec 4, 2023 •
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When preferences are saved they're grouped into objects like this:

{
    'core': {
         // preferences shared across editors (there aren't any at the moment)
    },
    'core/edit-post': {
        // preferences that are only for the post editor
    },
    'core/edit-site': {
       // preferences that are only for the site editor
    }
}

So you'd need to decide what the right value here should be. A problem is that this is in the 'block-editor' package which is used across both the post and site editor, so having 'core/edit-post' hardcoded doesn't seem like the right option.

I think it would be good to have the strictContrastCheck passed in as a prop to the component rather than have the preference built-in to solve that. You'd then have more control over whether to use 'core', 'core/edit-post' or 'core/edit-site' as the place to save the preference value.

'strictColorContrastChecks'
),
} ),
[]
);

// Must have a background color.
if ( ! currentBackgroundColor ) {
return null;
Expand All @@ -52,9 +64,9 @@ function ContrastChecker( {
];
const colordBackgroundColor = colord( currentBackgroundColor );
const backgroundColorHasTransparency = colordBackgroundColor.alpha() < 1;
const backgroundColorBrightness = colordBackgroundColor.brightness();
const backgroundColorLuminance = colordBackgroundColor.luminance();
const isReadableOptions = {
level: 'AA',
level: strictContrastCheck ? 'AAA' : 'AA',
size:
isLargeText || ( isLargeText !== false && fontSize >= 24 )
? 'large'
Expand Down Expand Up @@ -82,7 +94,7 @@ function ContrastChecker( {
continue;
}
message =
backgroundColorBrightness < colordTextColor.brightness()
backgroundColorLuminance < colordTextColor.luminance()
? sprintf(
// translators: %s is a type of text color, e.g., "text color" or "link color".
__(
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2 changes: 1 addition & 1 deletion packages/block-library/package.json
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Expand Up @@ -63,7 +63,7 @@
"@wordpress/wordcount": "file:../wordcount",
"change-case": "^4.1.2",
"classnames": "^2.3.1",
"colord": "^2.7.0",
"colord": "^2.9.3",
"escape-html": "^1.0.3",
"fast-average-color": "^9.1.1",
"fast-deep-equal": "^3.1.3",
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2 changes: 1 addition & 1 deletion packages/blocks/package.json
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Expand Up @@ -44,7 +44,7 @@
"@wordpress/private-apis": "file:../private-apis",
"@wordpress/shortcode": "file:../shortcode",
"change-case": "^4.1.2",
"colord": "^2.7.0",
"colord": "^2.9.3",
"fast-deep-equal": "^3.1.3",
"hpq": "^1.3.0",
"is-plain-object": "^5.0.0",
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2 changes: 1 addition & 1 deletion packages/components/package.json
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Expand Up @@ -62,7 +62,7 @@
"@wordpress/warning": "file:../warning",
"change-case": "^4.1.2",
"classnames": "^2.3.1",
"colord": "^2.7.0",
"colord": "^2.9.3",
"date-fns": "^2.28.0",
"deepmerge": "^4.3.0",
"dom-scroll-into-view": "^1.2.1",
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14 changes: 13 additions & 1 deletion packages/edit-post/src/components/preferences-modal/index.js
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Expand Up @@ -2,7 +2,7 @@
* WordPress dependencies
*/

import { __ } from '@wordpress/i18n';
import { __, sprintf } from '@wordpress/i18n';
import { useViewportMatch } from '@wordpress/compose';
import { useSelect, useDispatch } from '@wordpress/data';
import { useMemo } from '@wordpress/element';
Expand Down Expand Up @@ -76,6 +76,10 @@ export default function EditPostPreferencesModal() {
closeGeneralSidebar();
};

const colorContrastCheckAAA = useSelect( ( select ) => {
const { isFeatureActive } = select( editPostStore );
return isFeatureActive( 'strictColorContrastChecks' );
}, [] );
Comment on lines +79 to +82
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This can be selected from the preferences store instead of using isFeatureActive (which I think is deprecated, or should be deprecated).

const sections = useMemo(
() => [
{
Expand Down Expand Up @@ -152,6 +156,14 @@ export default function EditPostPreferencesModal() {
label={ __( 'Display block breadcrumbs' ) }
/>
) }
<EnableFeature
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I mentioned in another issue that it'd make sense to introduce a new Accessibility panel to the settings modal instead of folding everything into appearance.

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Here: #41041 (comment)

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Is this something that would block this PR? I believe that if at some point we introduce an a11y panel, then we can move that option there (if and when that happens)

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It shouldn't block this, just connecting the dots since it's been mentioned in a few PRs adding features but hasn't gotten much attention.

featureName="strictColorContrastChecks"
help={ sprintf(
'Switches the color contrast checker to be comply with WCAG AAA guidelines instead of WCAG AA. Currently checking for: %s.',
colorContrastCheckAAA ? 'AAA' : 'AA'
) }
label={ __( 'Strict color-contrast checker' ) }
/>
</PreferencesModalSection>
</>
),
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1 change: 1 addition & 0 deletions packages/edit-post/src/index.js
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Expand Up @@ -58,6 +58,7 @@ export function initializeEditor(
showIconLabels: false,
showListViewByDefault: false,
themeStyles: true,
strictColorContrastChecks: false,
welcomeGuide: true,
welcomeGuideTemplate: true,
} );
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2 changes: 1 addition & 1 deletion packages/edit-site/package.json
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Expand Up @@ -69,7 +69,7 @@
"@wordpress/wordcount": "file:../wordcount",
"change-case": "^4.1.2",
"classnames": "^2.3.1",
"colord": "^2.9.2",
"colord": "^2.9.3",
"deepmerge": "^4.3.0",
"fast-deep-equal": "^3.1.3",
"is-plain-object": "^5.0.0",
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