| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* Server-side rendering of the `core/accordion-item` block. |
| 5 |
* |
| 6 |
* @package WordPress |
| 7 |
* @since 6.9.0 |
| 8 |
* |
| 9 |
* @param array{ openByDefault: bool } $attributes The block attributes. |
| 10 |
* @param string $content The block content. |
| 11 |
* @return string Returns the updated markup. |
| 12 |
*/ |
| 13 |
function gutenberg_block_core_accordion_item_render( array $attributes, string $content ): string { |
| 14 |
if ( '' === $content ) { |
| 15 |
return $content; |
| 16 |
} |
| 17 |
|
| 18 |
$p = new WP_HTML_Tag_Processor( $content ); |
| 19 |
$unique_id = wp_unique_id( 'accordion-item-' ); |
| 20 |
|
| 21 |
// Initialize the state of the item on the server using a closure, |
| 22 |
// since we need to get derived state based on the current context. |
| 23 |
wp_interactivity_state( |
| 24 |
'core/accordion', |
| 25 |
array( |
| 26 |
'isOpen' => function () { |
| 27 |
$context = wp_interactivity_get_context(); |
| 28 |
return $context['openByDefault']; |
| 29 |
}, |
| 30 |
) |
| 31 |
); |
| 32 |
|
| 33 |
if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion-item' ) ) ) { |
| 34 |
$open_by_default = $attributes['openByDefault'] ? 'true' : 'false'; |
| 35 |
$p->set_attribute( 'data-wp-context', '{ "id": "' . $unique_id . '", "openByDefault": ' . $open_by_default . ' }' ); |
| 36 |
$p->set_attribute( 'data-wp-class--is-open', 'state.isOpen' ); |
| 37 |
$p->set_attribute( 'data-wp-init', 'callbacks.initAccordionItems' ); |
| 38 |
$p->set_attribute( 'data-wp-on-window--hashchange', 'callbacks.hashChange' ); |
| 39 |
|
| 40 |
if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion-heading__toggle' ) ) ) { |
| 41 |
$p->set_attribute( 'data-wp-on--click', 'actions.toggle' ); |
| 42 |
$p->set_attribute( 'id', $unique_id ); |
| 43 |
$p->set_attribute( 'aria-controls', $unique_id . '-panel' ); |
| 44 |
$p->set_attribute( 'data-wp-bind--aria-expanded', 'state.isOpen' ); |
| 45 |
|
| 46 |
if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion-panel' ) ) ) { |
| 47 |
$p->set_attribute( 'id', $unique_id . '-panel' ); |
| 48 |
$p->set_attribute( 'aria-labelledby', $unique_id ); |
| 49 |
$p->set_attribute( 'data-wp-bind--inert', '!state.isOpen' ); |
| 50 |
|
| 51 |
// Only modify content if all directives have been set. |
| 52 |
$content = $p->get_updated_html(); |
| 53 |
} |
| 54 |
} |
| 55 |
} |
| 56 |
|
| 57 |
/* |
| 58 |
* If an Accordion Item is collapsed by default, ensure any contained IMG has fetchpriority=low to deprioritize it |
| 59 |
* from contending with resources in the critical rendering path. In contrast, remove the loading attribute to |
| 60 |
* prevent the image from not being available when the item is expanded. |
| 61 |
*/ |
| 62 |
if ( ! $attributes['openByDefault'] ) { |
| 63 |
$processor = new WP_HTML_Tag_Processor( $content ); |
| 64 |
while ( $processor->next_tag( 'IMG' ) ) { |
| 65 |
$processor->set_attribute( 'fetchpriority', 'low' ); |
| 66 |
} |
| 67 |
$content = $processor->get_updated_html(); |
| 68 |
} |
| 69 |
|
| 70 |
return $content; |
| 71 |
} |
| 72 |
|
| 73 |
/** |
| 74 |
* Registers the `core/accordion-item` block on server. |
| 75 |
* |
| 76 |
* @since 6.9.0 |
| 77 |
*/ |
| 78 |
function gutenberg_register_block_core_accordion_item() { |
| 79 |
register_block_type_from_metadata( |
| 80 |
__DIR__ . '/accordion-item', |
| 81 |
array( |
| 82 |
'render_callback' => 'gutenberg_block_core_accordion_item_render', |
| 83 |
) |
| 84 |
); |
| 85 |
} |
| 86 |
add_action( 'init', 'gutenberg_register_block_core_accordion_item', 20 ); |
| 87 |
|
