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Check for specific whitelisted psuedo classes
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@getdave
getdave committed Jul 1, 2022
1 parent ff68d80 commit ee67b53
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Showing 2 changed files with 23 additions and 13 deletions.
26 changes: 18 additions & 8 deletions lib/compat/wordpress-6.1/class-wp-theme-json-6-1.php
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@
class WP_Theme_JSON_6_1 extends WP_Theme_JSON_6_0 {

/**
* Whitelist which defines which pseudo selectors are enabled for
* Define which defines which pseudo selectors are enabled for
* which elements.
* Note: this will effect both top level and block level elements.
*/
Expand All @@ -31,7 +31,7 @@ class WP_Theme_JSON_6_1 extends WP_Theme_JSON_6_0 {
* @var string[]
*/
const ELEMENTS = array(
'link' => 'a',
'link' => 'a:not(.wp-element-button)',
'h1' => 'h1',
'h2' => 'h2',
'h3' => 'h3',
Expand Down Expand Up @@ -431,7 +431,7 @@ private static function get_block_nodes( $theme_json, $selectors = array() ) {
'selector' => $selectors[ $name ]['elements'][ $element ],
);

// Handle any psuedo selectors for the element.
// Handle any pseudo selectors for the element.
if ( isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] ) ) {
foreach ( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $element ] as $pseudo_selector ) {
if ( isset( $theme_json['styles']['blocks'][ $name ]['elements'][ $element ][ $pseudo_selector ] ) ) {
Expand Down Expand Up @@ -462,11 +462,6 @@ public function get_styles_for_block( $block_metadata ) {
$selector = $block_metadata['selector'];
$settings = _wp_array_get( $this->theme_json, array( 'settings' ) );

// Attempt to parse a pseudo selector (e.g. ":hover") from the $selector ("a:hover").
$pseudo_matches = array();
preg_match( '/:[a-z]+/', $selector, $pseudo_matches );
$pseudo_selector = isset( $pseudo_matches[0] ) ? $pseudo_matches[0] : null;

// Get a reference to element name from path.
// $block_metadata['path'] = array('styles','elements','link');
// Make sure that $block_metadata['path'] describes an element node, like ['styles', 'element', 'link'].
Expand All @@ -475,6 +470,21 @@ public function get_styles_for_block( $block_metadata ) {

$current_element = $is_processing_element ? $block_metadata['path'][ count( $block_metadata['path'] ) - 1 ] : null;

$element_pseudo_allowed = isset( static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] ) ? static::VALID_ELEMENT_PSEUDO_SELECTORS[ $current_element ] : array();

// Check for allowed pseudo classes (e.g. ":hover") from the $selector ("a:hover").
// This also resets the array keys.
$pseudo_matches = array_values(
array_filter(
$element_pseudo_allowed,
function( $pseudo_selector ) use ( $selector ) {
return str_contains( $selector, $pseudo_selector );
}
)
);

$pseudo_selector = isset( $pseudo_matches[0] ) ? $pseudo_matches[0] : null;

// If the current selector is a pseudo selector that's defined in the allow list for the current
// element then compute the style properties for it.
// Otherwise just compute the styles for the default selector as normal.
Expand Down
10 changes: 5 additions & 5 deletions phpunit/class-wp-theme-json-test.php
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ function test_get_stylesheet_handles_whitelisted_element_pseudo_selectors() {

$base_styles = 'body { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';

$element_styles = 'a{background-color: red;color: green;}a:hover{background-color: green;color: red;font-size: 10em;text-transform: uppercase;}a:focus{background-color: black;color: yellow;}';
$element_styles = 'a:not(.wp-element-button){background-color: red;color: green;}a:not(.wp-element-button):hover{background-color: green;color: red;font-size: 10em;text-transform: uppercase;}a:not(.wp-element-button):focus{background-color: black;color: yellow;}';

$expected = $base_styles . $element_styles;

Expand Down Expand Up @@ -82,7 +82,7 @@ function test_get_stylesheet_handles_only_psuedo_selector_rules_for_given_proper

$base_styles = 'body { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';

$element_styles = 'a:hover{background-color: green;color: red;font-size: 10em;text-transform: uppercase;}a:focus{background-color: black;color: yellow;}';
$element_styles = 'a:not(.wp-element-button):hover{background-color: green;color: red;font-size: 10em;text-transform: uppercase;}a:not(.wp-element-button):focus{background-color: black;color: yellow;}';

$expected = $base_styles . $element_styles;

Expand Down Expand Up @@ -160,7 +160,7 @@ function test_get_stylesheet_ignores_non_whitelisted_pseudo_selectors() {

$base_styles = 'body { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';

$element_styles = 'a{background-color: red;color: green;}a:hover{background-color: green;color: red;}';
$element_styles = 'a:not(.wp-element-button){background-color: red;color: green;}a:not(.wp-element-button):hover{background-color: green;color: red;}';

$expected = $base_styles . $element_styles;

Expand Down Expand Up @@ -208,7 +208,7 @@ function test_get_stylesheet_handles_priority_of_elements_vs_block_elements_pseu

$base_styles = 'body { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';

$element_styles = '.wp-block-group a{background-color: red;color: green;}.wp-block-group a:hover{background-color: green;color: red;font-size: 10em;text-transform: uppercase;}.wp-block-group a:focus{background-color: black;color: yellow;}';
$element_styles = '.wp-block-group a:not(.wp-element-button){background-color: red;color: green;}.wp-block-group a:not(.wp-element-button):hover{background-color: green;color: red;font-size: 10em;text-transform: uppercase;}.wp-block-group a:not(.wp-element-button):focus{background-color: black;color: yellow;}';

$expected = $base_styles . $element_styles;

Expand Down Expand Up @@ -255,7 +255,7 @@ function test_get_stylesheet_handles_whitelisted_block_level_element_pseudo_sele

$base_styles = 'body { margin: 0; }.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }';

$element_styles = 'a{background-color: red;color: green;}a:hover{background-color: green;color: red;}.wp-block-group a:hover{background-color: black;color: yellow;}';
$element_styles = 'a:not(.wp-element-button){background-color: red;color: green;}a:not(.wp-element-button):hover{background-color: green;color: red;}.wp-block-group a:not(.wp-element-button):hover{background-color: black;color: yellow;}';

$expected = $base_styles . $element_styles;

Expand Down

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