315 lines
8.8 KiB
PHP
315 lines
8.8 KiB
PHP
<?php
|
|
/**
|
|
* Functions related to registering and parsing blocks.
|
|
*
|
|
* @package WordPress
|
|
* @subpackage Blocks
|
|
* @since 5.0.0
|
|
*/
|
|
|
|
/**
|
|
* Registers a block type.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively a
|
|
* complete WP_Block_Type instance. In case a WP_Block_Type
|
|
* is provided, the $args parameter will be ignored.
|
|
* @param array $args {
|
|
* Optional. Array of block type arguments. Any arguments may be defined, however the
|
|
* ones described below are supported by default. Default empty array.
|
|
*
|
|
* @type callable $render_callback Callback used to render blocks of this block type.
|
|
* }
|
|
* @return WP_Block_Type|false The registered block type on success, or false on failure.
|
|
*/
|
|
function register_block_type( $name, $args = array() ) {
|
|
return WP_Block_Type_Registry::get_instance()->register( $name, $args );
|
|
}
|
|
|
|
/**
|
|
* Unregisters a block type.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string|WP_Block_Type $name Block type name including namespace, or alternatively a
|
|
* complete WP_Block_Type instance.
|
|
* @return WP_Block_Type|false The unregistered block type on success, or false on failure.
|
|
*/
|
|
function unregister_block_type( $name ) {
|
|
return WP_Block_Type_Registry::get_instance()->unregister( $name );
|
|
}
|
|
|
|
/**
|
|
* Determine whether a post or content string has blocks.
|
|
*
|
|
* This test optimizes for performance rather than strict accuracy, detecting
|
|
* the pattern of a block but not validating its structure. For strict accuracy,
|
|
* you should use the block parser on post content.
|
|
*
|
|
* @since 5.0.0
|
|
* @see parse_blocks()
|
|
*
|
|
* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
|
|
* @return bool Whether the post has blocks.
|
|
*/
|
|
function has_blocks( $post = null ) {
|
|
if ( ! is_string( $post ) ) {
|
|
$wp_post = get_post( $post );
|
|
if ( $wp_post instanceof WP_Post ) {
|
|
$post = $wp_post->post_content;
|
|
}
|
|
}
|
|
|
|
return false !== strpos( (string) $post, '<!-- wp:' );
|
|
}
|
|
|
|
/**
|
|
* Determine whether a $post or a string contains a specific block type.
|
|
*
|
|
* This test optimizes for performance rather than strict accuracy, detecting
|
|
* the block type exists but not validating its structure. For strict accuracy,
|
|
* you should use the block parser on post content.
|
|
*
|
|
* @since 5.0.0
|
|
* @see parse_blocks()
|
|
*
|
|
* @param string $block_type Full Block type to look for.
|
|
* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
|
|
* @return bool Whether the post content contains the specified block.
|
|
*/
|
|
function has_block( $block_type, $post = null ) {
|
|
if ( ! has_blocks( $post ) ) {
|
|
return false;
|
|
}
|
|
|
|
if ( ! is_string( $post ) ) {
|
|
$wp_post = get_post( $post );
|
|
if ( $wp_post instanceof WP_Post ) {
|
|
$post = $wp_post->post_content;
|
|
}
|
|
}
|
|
|
|
return false !== strpos( $post, '<!-- wp:' . $block_type . ' ' );
|
|
}
|
|
|
|
/**
|
|
* Returns an array of the names of all registered dynamic block types.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @return array Array of dynamic block names.
|
|
*/
|
|
function get_dynamic_block_names() {
|
|
$dynamic_block_names = array();
|
|
|
|
$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
|
|
foreach ( $block_types as $block_type ) {
|
|
if ( $block_type->is_dynamic() ) {
|
|
$dynamic_block_names[] = $block_type->name;
|
|
}
|
|
}
|
|
|
|
return $dynamic_block_names;
|
|
}
|
|
|
|
/**
|
|
* Parses blocks out of a content string, and renders those appropriate for the excerpt.
|
|
*
|
|
* As the excerpt should be a small string of text relevant to the full post content,
|
|
* this function renders the blocks that are most likely to contain such text.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string $content The content to parse.
|
|
* @return string The parsed and filtered content.
|
|
*/
|
|
function excerpt_remove_blocks( $content ) {
|
|
$allowed_blocks = array(
|
|
// Classic blocks have their blockName set to null.
|
|
null,
|
|
'core/columns',
|
|
'core/freeform',
|
|
'core/heading',
|
|
'core/html',
|
|
'core/list',
|
|
'core/media-text',
|
|
'core/paragraph',
|
|
'core/preformatted',
|
|
'core/pullquote',
|
|
'core/quote',
|
|
'core/table',
|
|
'core/verse',
|
|
);
|
|
/**
|
|
* Filters the list of blocks that can contribute to the excerpt.
|
|
*
|
|
* If a dynamic block is added to this list, it must not generate another
|
|
* excerpt, as this will cause an infinite loop to occur.
|
|
*
|
|
* @since 4.4.0
|
|
*
|
|
* @param array $allowed_blocks The list of allowed blocks.
|
|
*/
|
|
$allowed_blocks = apply_filters( 'excerpt_allowed_blocks', $allowed_blocks );
|
|
$blocks = parse_blocks( $content );
|
|
$output = '';
|
|
foreach ( $blocks as $block ) {
|
|
if ( in_array( $block['blockName'], $allowed_blocks, true ) ) {
|
|
$output .= render_block( $block );
|
|
}
|
|
}
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Renders a single block into a HTML string.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @global WP_Post $post The post to edit.
|
|
*
|
|
* @param array $block A single parsed block object.
|
|
* @return string String of rendered HTML.
|
|
*/
|
|
function render_block( $block ) {
|
|
global $post;
|
|
|
|
/**
|
|
* Allows render_block() to be shortcircuited, by returning a non-null value.
|
|
*
|
|
* @since 5.1.0
|
|
*
|
|
* @param string $pre_render The pre-rendered content. Default null.
|
|
* @param array $block The block being rendered.
|
|
*/
|
|
$pre_render = apply_filters( 'pre_render_block', null, $block );
|
|
if ( ! is_null( $pre_render ) ) {
|
|
return $pre_render;
|
|
}
|
|
|
|
$source_block = $block;
|
|
|
|
/**
|
|
* Filters the block being rendered in render_block(), before it's processed.
|
|
*
|
|
* @since 5.1.0
|
|
*
|
|
* @param array $block The block being rendered.
|
|
* @param array $source_block An un-modified copy of $block, as it appeared in the source content.
|
|
*/
|
|
$block = apply_filters( 'render_block_data', $block, $source_block );
|
|
|
|
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
|
|
$is_dynamic = $block['blockName'] && null !== $block_type && $block_type->is_dynamic();
|
|
$block_content = '';
|
|
$index = 0;
|
|
|
|
foreach ( $block['innerContent'] as $chunk ) {
|
|
$block_content .= is_string( $chunk ) ? $chunk : render_block( $block['innerBlocks'][ $index++ ] );
|
|
}
|
|
|
|
if ( ! is_array( $block['attrs'] ) ) {
|
|
$block['attrs'] = array();
|
|
}
|
|
|
|
if ( $is_dynamic ) {
|
|
$global_post = $post;
|
|
$block_content = $block_type->render( $block['attrs'], $block_content );
|
|
$post = $global_post;
|
|
}
|
|
|
|
/**
|
|
* Filters the content of a single block.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string $block_content The block content about to be appended.
|
|
* @param array $block The full block, including name and attributes.
|
|
*/
|
|
return apply_filters( 'render_block', $block_content, $block );
|
|
}
|
|
|
|
/**
|
|
* Parses blocks out of a content string.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string $content Post content.
|
|
* @return array Array of parsed block objects.
|
|
*/
|
|
function parse_blocks( $content ) {
|
|
/**
|
|
* Filter to allow plugins to replace the server-side block parser
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string $parser_class Name of block parser class.
|
|
*/
|
|
$parser_class = apply_filters( 'block_parser_class', 'WP_Block_Parser' );
|
|
|
|
$parser = new $parser_class();
|
|
return $parser->parse( $content );
|
|
}
|
|
|
|
/**
|
|
* Parses dynamic blocks out of `post_content` and re-renders them.
|
|
*
|
|
* @since 5.0.0
|
|
* @global WP_Post $post The post to edit.
|
|
*
|
|
* @param string $content Post content.
|
|
* @return string Updated post content.
|
|
*/
|
|
function do_blocks( $content ) {
|
|
$blocks = parse_blocks( $content );
|
|
$output = '';
|
|
|
|
foreach ( $blocks as $block ) {
|
|
$output .= render_block( $block );
|
|
}
|
|
|
|
// If there are blocks in this content, we shouldn't run wpautop() on it later.
|
|
$priority = has_filter( 'the_content', 'wpautop' );
|
|
if ( false !== $priority && doing_filter( 'the_content' ) && has_blocks( $content ) ) {
|
|
remove_filter( 'the_content', 'wpautop', $priority );
|
|
add_filter( 'the_content', '_restore_wpautop_hook', $priority + 1 );
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* If do_blocks() needs to remove wp_autop() from the `the_content` filter, this re-adds it afterwards,
|
|
* for subsequent `the_content` usage.
|
|
*
|
|
* @access private
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string $content The post content running through this filter.
|
|
* @return string The unmodified content.
|
|
*/
|
|
function _restore_wpautop_hook( $content ) {
|
|
$current_priority = has_filter( 'the_content', '_restore_wpautop_hook' );
|
|
|
|
add_filter( 'the_content', 'wpautop', $current_priority - 1 );
|
|
remove_filter( 'the_content', '_restore_wpautop_hook', $current_priority );
|
|
|
|
return $content;
|
|
}
|
|
|
|
/**
|
|
* Returns the current version of the block format that the content string is using.
|
|
*
|
|
* If the string doesn't contain blocks, it returns 0.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @param string $content Content to test.
|
|
* @return int The block format version is 1 if the content contains one or more blocks, 0 otherwise.
|
|
*/
|
|
function block_version( $content ) {
|
|
return has_blocks( $content ) ? 1 : 0;
|
|
}
|