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<?php
/**
* Server-side rendering of the `core/query` block.
*
* @package WordPress
*/
/**
* Modifies the static `core/query` block on the server.
*
* @since 6.4.0
*
* @param array $attributes Block attributes.
* @param string $content Block default content.
* @param WP_Block $block The block instance.
*
* @return string Returns the modified output of the query block.
*/
function render_block_core_query( $attributes, $content, $block ) {
if ( $attributes['enhancedPagination'] && isset( $attributes['queryId'] ) ) {
$p = new WP_HTML_Tag_Processor( $content );
if ( $p->next_tag() ) {
// Add the necessary directives.
$p->set_attribute( 'data-wp-interactive', true );
$p->set_attribute( 'data-wp-navigation-id', 'query-' . $attributes['queryId'] );
// Use context to send translated strings.
$p->set_attribute(
'data-wp-context',
wp_json_encode(
array(
'core' => array(
'query' => array(
'loadingText' => __( 'Loading page, please wait.' ),
'loadedText' => __( 'Page Loaded.' ),
),
),
),
JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_AMP
)
);
$content = $p->get_updated_html();
// Mark the block as interactive.
$block->block_type->supports['interactivity'] = true;
// Add a div to announce messages using `aria-live`.
$html_tag = 'div';
if ( ! empty( $attributes['tagName'] ) ) {
$html_tag = esc_attr( $attributes['tagName'] );
}
$last_tag_position = strripos( $content, '</' . $html_tag . '>' );
$content = substr_replace(
$content,
'<div
class="screen-reader-text"
aria-live="polite"
data-wp-text="context.core.query.message"
></div>
<div
class="wp-block-query__enhanced-pagination-animation"
data-wp-class--start-animation="selectors.core.query.startAnimation"
data-wp-class--finish-animation="selectors.core.query.finishAnimation"
></div>',
$last_tag_position,
0
);
}
}
$view_asset = 'wp-block-query-view';
if ( ! wp_script_is( $view_asset ) ) {
$script_handles = $block->block_type->view_script_handles;
// If the script is not needed, and it is still in the `view_script_handles`, remove it.
if (
( ! $attributes['enhancedPagination'] || ! isset( $attributes['queryId'] ) )
&& in_array( $view_asset, $script_handles, true )
) {
$block->block_type->view_script_handles = array_diff( $script_handles, array( $view_asset ) );
}
// If the script is needed, but it was previously removed, add it again.
if ( $attributes['enhancedPagination'] && isset( $attributes['queryId'] ) && ! in_array( $view_asset, $script_handles, true ) ) {
$block->block_type->view_script_handles = array_merge( $script_handles, array( $view_asset ) );
}
}
$style_asset = 'wp-block-query';
if ( ! wp_style_is( $style_asset ) ) {
$style_handles = $block->block_type->style_handles;
// If the styles are not needed, and they are still in the `style_handles`, remove them.
if (
( ! $attributes['enhancedPagination'] || ! isset( $attributes['queryId'] ) )
&& in_array( $style_asset, $style_handles, true )
) {
$block->block_type->style_handles = array_diff( $style_handles, array( $style_asset ) );
}
// If the styles are needed, but they were previously removed, add them again.
if ( $attributes['enhancedPagination'] && isset( $attributes['queryId'] ) && ! in_array( $style_asset, $style_handles, true ) ) {
$block->block_type->style_handles = array_merge( $style_handles, array( $style_asset ) );
}
}
return $content;
}
/**
* Ensure that the view script has the `wp-interactivity` dependency.
*
* @since 6.4.0
*
* @global WP_Scripts $wp_scripts
*/
function block_core_query_ensure_interactivity_dependency() {
global $wp_scripts;
if (
isset( $wp_scripts->registered['wp-block-query-view'] ) &&
! in_array( 'wp-interactivity', $wp_scripts->registered['wp-block-query-view']->deps, true )
) {
$wp_scripts->registered['wp-block-query-view']->deps[] = 'wp-interactivity';
}
}
add_action( 'wp_print_scripts', 'block_core_query_ensure_interactivity_dependency' );
/**
* Registers the `core/query` block on the server.
*/
function register_block_core_query() {
register_block_type_from_metadata(
__DIR__ . '/query',
array(
'render_callback' => 'render_block_core_query',
)
);
}
add_action( 'init', 'register_block_core_query' );
/**
* Traverse the tree of blocks looking for any plugin block (i.e., a block from
* an installed plugin) inside a Query block with the enhanced pagination
* enabled. If at least one is found, the enhanced pagination is effectively
* disabled to prevent any potential incompatibilities.
*
* @since 6.4.0
*
* @param array $parsed_block The block being rendered.
* @return string Returns the parsed block, unmodified.
*/
function block_core_query_disable_enhanced_pagination( $parsed_block ) {
static $enhanced_query_stack = array();
static $dirty_enhanced_queries = array();
static $render_query_callback = null;
$block_name = $parsed_block['blockName'];
if (
'core/query' === $block_name &&
isset( $parsed_block['attrs']['enhancedPagination'] ) &&
true === $parsed_block['attrs']['enhancedPagination'] &&
isset( $parsed_block['attrs']['queryId'] )
) {
$enhanced_query_stack[] = $parsed_block['attrs']['queryId'];
if ( ! isset( $render_query_callback ) ) {
/**
* Filter that disables the enhanced pagination feature during block
* rendering when a plugin block has been found inside. It does so
* by adding an attribute called `data-wp-navigation-disabled` which
* is later handled by the front-end logic.
*
* @param string $content The block content.
* @param array $block The full block, including name and attributes.
* @return string Returns the modified output of the query block.
*/
$render_query_callback = static function ( $content, $block ) use ( &$enhanced_query_stack, &$dirty_enhanced_queries, &$render_query_callback ) {
$has_enhanced_pagination =
isset( $block['attrs']['enhancedPagination'] ) &&
true === $block['attrs']['enhancedPagination'] &&
isset( $block['attrs']['queryId'] );
if ( ! $has_enhanced_pagination ) {
return $content;
}
if ( isset( $dirty_enhanced_queries[ $block['attrs']['queryId'] ] ) ) {
$p = new WP_HTML_Tag_Processor( $content );
if ( $p->next_tag() ) {
$p->set_attribute( 'data-wp-navigation-disabled', 'true' );
}
$content = $p->get_updated_html();
$dirty_enhanced_queries[ $block['attrs']['queryId'] ] = null;
}
array_pop( $enhanced_query_stack );
if ( empty( $enhanced_query_stack ) ) {
remove_filter( 'render_block_core/query', $render_query_callback );
$render_query_callback = null;
}
return $content;
};
add_filter( 'render_block_core/query', $render_query_callback, 10, 2 );
}
} elseif (
! empty( $enhanced_query_stack ) &&
isset( $block_name ) &&
( ! str_starts_with( $block_name, 'core/' ) || 'core/post-content' === $block_name )
) {
foreach ( $enhanced_query_stack as $query_id ) {
$dirty_enhanced_queries[ $query_id ] = true;
}
}
return $parsed_block;
}
add_filter( 'render_block_data', 'block_core_query_disable_enhanced_pagination', 10, 1 );
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