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cb7d0efb45
`render_block_{$this->name}`
This complements the existing `render_block` hook and allows for filtering the content of a specific block without having to use conditionals inside the filter callback.
Props manzoorwani.jk, noisysocks, birgire, johnbillion.
Fixes #46187.
Built from https://develop.svn.wordpress.org/trunk@50123
git-svn-id: http://core.svn.wordpress.org/trunk@49802 1a063a9b-81f0-0310-95a4-ce76da25c4cd
263 lines
6.6 KiB
PHP
263 lines
6.6 KiB
PHP
<?php
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/**
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* Blocks API: WP_Block class
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*
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* @package WordPress
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* @since 5.5.0
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*/
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/**
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* Class representing a parsed instance of a block.
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*
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* @since 5.5.0
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* @property array $attributes
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*/
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class WP_Block {
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/**
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* Original parsed array representation of block.
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*
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* @since 5.5.0
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* @var array
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*/
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public $parsed_block;
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/**
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* Name of block.
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*
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* @example "core/paragraph"
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*
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* @since 5.5.0
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* @var string
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*/
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public $name;
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/**
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* Block type associated with the instance.
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*
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* @since 5.5.0
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* @var WP_Block_Type
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*/
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public $block_type;
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/**
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* Block context values.
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*
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* @since 5.5.0
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* @var array
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*/
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public $context = array();
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/**
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* All available context of the current hierarchy.
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*
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* @since 5.5.0
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* @var array
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* @access protected
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*/
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protected $available_context;
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/**
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* List of inner blocks (of this same class)
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*
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* @since 5.5.0
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* @var WP_Block[]
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*/
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public $inner_blocks = array();
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/**
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* Resultant HTML from inside block comment delimiters after removing inner
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* blocks.
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*
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* @example "...Just <!-- wp:test /--> testing..." -> "Just testing..."
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*
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* @since 5.5.0
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* @var string
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*/
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public $inner_html = '';
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/**
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* List of string fragments and null markers where inner blocks were found
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*
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* @example array(
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* 'inner_html' => 'BeforeInnerAfter',
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* 'inner_blocks' => array( block, block ),
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* 'inner_content' => array( 'Before', null, 'Inner', null, 'After' ),
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* )
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*
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* @since 5.5.0
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* @var array
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*/
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public $inner_content = array();
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/**
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* Constructor.
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*
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* Populates object properties from the provided block instance argument.
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*
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* The given array of context values will not necessarily be available on
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* the instance itself, but is treated as the full set of values provided by
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* the block's ancestry. This is assigned to the private `available_context`
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* property. Only values which are configured to consumed by the block via
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* its registered type will be assigned to the block's `context` property.
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*
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* @since 5.5.0
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*
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* @param array $block Array of parsed block properties.
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* @param array $available_context Optional array of ancestry context values.
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* @param WP_Block_Type_Registry $registry Optional block type registry.
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*/
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public function __construct( $block, $available_context = array(), $registry = null ) {
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$this->parsed_block = $block;
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$this->name = $block['blockName'];
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if ( is_null( $registry ) ) {
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$registry = WP_Block_Type_Registry::get_instance();
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}
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$this->block_type = $registry->get_registered( $this->name );
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$this->available_context = $available_context;
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if ( ! empty( $this->block_type->uses_context ) ) {
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foreach ( $this->block_type->uses_context as $context_name ) {
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if ( array_key_exists( $context_name, $this->available_context ) ) {
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$this->context[ $context_name ] = $this->available_context[ $context_name ];
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}
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}
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}
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if ( ! empty( $block['innerBlocks'] ) ) {
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$child_context = $this->available_context;
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if ( ! empty( $this->block_type->provides_context ) ) {
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foreach ( $this->block_type->provides_context as $context_name => $attribute_name ) {
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if ( array_key_exists( $attribute_name, $this->attributes ) ) {
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$child_context[ $context_name ] = $this->attributes[ $attribute_name ];
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}
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}
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}
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$this->inner_blocks = new WP_Block_List( $block['innerBlocks'], $child_context, $registry );
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}
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if ( ! empty( $block['innerHTML'] ) ) {
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$this->inner_html = $block['innerHTML'];
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}
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if ( ! empty( $block['innerContent'] ) ) {
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$this->inner_content = $block['innerContent'];
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}
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}
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/**
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* Returns a value from an inaccessible property.
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*
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* This is used to lazily initialize the `attributes` property of a block,
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* such that it is only prepared with default attributes at the time that
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* the property is accessed. For all other inaccessible properties, a `null`
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* value is returned.
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*
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* @since 5.5.0
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*
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* @param string $name Property name.
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* @return array|null Prepared attributes, or null.
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*/
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public function __get( $name ) {
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if ( 'attributes' === $name ) {
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$this->attributes = isset( $this->parsed_block['attrs'] ) ?
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$this->parsed_block['attrs'] :
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array();
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if ( ! is_null( $this->block_type ) ) {
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$this->attributes = $this->block_type->prepare_attributes_for_render( $this->attributes );
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}
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return $this->attributes;
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}
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return null;
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}
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/**
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* Generates the render output for the block.
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*
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* @since 5.5.0
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*
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* @param array $options {
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* Optional options object.
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*
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* @type bool $dynamic Defaults to 'true'. Optionally set to false to avoid using the block's render_callback.
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* }
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* @return string Rendered block output.
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*/
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public function render( $options = array() ) {
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global $post;
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$options = wp_parse_args(
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$options,
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array(
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'dynamic' => true,
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)
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);
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$is_dynamic = $options['dynamic'] && $this->name && null !== $this->block_type && $this->block_type->is_dynamic();
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$block_content = '';
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if ( ! $options['dynamic'] || empty( $this->block_type->skip_inner_blocks ) ) {
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$index = 0;
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foreach ( $this->inner_content as $chunk ) {
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$block_content .= is_string( $chunk ) ?
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$chunk :
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$this->inner_blocks[ $index++ ]->render();
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}
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}
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if ( $is_dynamic ) {
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$global_post = $post;
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$parent = WP_Block_Supports::$block_to_render;
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WP_Block_Supports::$block_to_render = $this->parsed_block;
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$block_content = (string) call_user_func( $this->block_type->render_callback, $this->attributes, $block_content, $this );
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WP_Block_Supports::$block_to_render = $parent;
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$post = $global_post;
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}
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if ( ! empty( $this->block_type->script ) ) {
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wp_enqueue_script( $this->block_type->script );
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}
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if ( ! empty( $this->block_type->style ) ) {
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wp_enqueue_style( $this->block_type->style );
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}
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/**
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* Filters the content of a single block.
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*
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* @since 5.0.0
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*
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* @param string $block_content The block content about to be appended.
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* @param array $block The full block, including name and attributes.
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*/
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$block_content = apply_filters( 'render_block', $block_content, $this->parsed_block );
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/**
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* Filters the content of a single block.
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*
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* The dynamic portion of the hook name, `$name`, refers to
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* the block name, e.g. "core/paragraph".
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*
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* @since 5.7.0
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*
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* @param string $block_content The block content about to be appended.
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* @param array $block The full block, including name and attributes.
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*/
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$block_content = apply_filters( "render_block_{$this->name}", $block_content, $this->parsed_block );
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return $block_content;
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}
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}
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