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9f841ea7c3
Follow-up to [47754]. Props ediamin. See #48640. Built from https://develop.svn.wordpress.org/trunk@48629 git-svn-id: http://core.svn.wordpress.org/trunk@48391 1a063a9b-81f0-0310-95a4-ce76da25c4cd
832 lines
25 KiB
PHP
832 lines
25 KiB
PHP
<?php
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/**
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* Functions related to registering and parsing blocks.
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*
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* @package WordPress
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* @subpackage Blocks
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* @since 5.0.0
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*/
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/**
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* Registers a block type.
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*
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* @since 5.0.0
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*
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* @param string|WP_Block_Type $name Block type name including namespace, or alternatively
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* a complete WP_Block_Type instance. In case a WP_Block_Type
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* is provided, the $args parameter will be ignored.
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* @param array $args {
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* Optional. Array of block type arguments. Accepts any public property of `WP_Block_Type`.
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* Any arguments may be defined, however the ones described below are supported by default.
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* Default empty array.
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*
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* @type callable $render_callback Callback used to render blocks of this block type.
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* }
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* @return WP_Block_Type|false The registered block type on success, or false on failure.
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*/
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function register_block_type( $name, $args = array() ) {
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return WP_Block_Type_Registry::get_instance()->register( $name, $args );
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}
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/**
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* Unregisters a block type.
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*
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* @since 5.0.0
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*
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* @param string|WP_Block_Type $name Block type name including namespace, or alternatively
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* a complete WP_Block_Type instance.
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* @return WP_Block_Type|false The unregistered block type on success, or false on failure.
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*/
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function unregister_block_type( $name ) {
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return WP_Block_Type_Registry::get_instance()->unregister( $name );
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}
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/**
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* Removes the block asset's path prefix if provided.
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*
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* @since 5.5.0
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*
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* @param string $asset_handle_or_path Asset handle or prefixed path.
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* @return string Path without the prefix or the original value.
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*/
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function remove_block_asset_path_prefix( $asset_handle_or_path ) {
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$path_prefix = 'file:';
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if ( 0 !== strpos( $asset_handle_or_path, $path_prefix ) ) {
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return $asset_handle_or_path;
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}
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return substr(
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$asset_handle_or_path,
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strlen( $path_prefix )
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);
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}
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/**
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* Generates the name for an asset based on the name of the block
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* and the field name provided.
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*
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* @since 5.5.0
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*
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* @param string $block_name Name of the block.
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* @param string $field_name Name of the metadata field.
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* @return string Generated asset name for the block's field.
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*/
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function generate_block_asset_handle( $block_name, $field_name ) {
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$field_mappings = array(
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'editorScript' => 'editor-script',
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'script' => 'script',
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'editorStyle' => 'editor-style',
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'style' => 'style',
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);
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return str_replace( '/', '-', $block_name ) .
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'-' . $field_mappings[ $field_name ];
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}
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/**
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* Finds a script handle for the selected block metadata field. It detects
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* when a path to file was provided and finds a corresponding asset file
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* with details necessary to register the script under automatically
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* generated handle name. It returns unprocessed script handle otherwise.
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*
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* @since 5.5.0
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*
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* @param array $metadata Block metadata.
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* @param string $field_name Field name to pick from metadata.
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* @return string|bool Script handle provided directly or created through
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* script's registration, or false on failure.
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*/
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function register_block_script_handle( $metadata, $field_name ) {
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if ( empty( $metadata[ $field_name ] ) ) {
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return false;
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}
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$script_handle = $metadata[ $field_name ];
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$script_path = remove_block_asset_path_prefix( $metadata[ $field_name ] );
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if ( $script_handle === $script_path ) {
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return $script_handle;
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}
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$script_handle = generate_block_asset_handle( $metadata['name'], $field_name );
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$script_asset_path = realpath(
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dirname( $metadata['file'] ) . '/' .
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substr_replace( $script_path, '.asset.php', - strlen( '.js' ) )
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);
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if ( ! file_exists( $script_asset_path ) ) {
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$message = sprintf(
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/* translators: %1: field name. %2: block name */
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__( 'The asset file for the "%1$s" defined in "%2$s" block definition is missing.', 'default' ),
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$field_name,
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$metadata['name']
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);
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_doing_it_wrong( __FUNCTION__, $message, '5.5.0' );
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return false;
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}
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$script_asset = require $script_asset_path;
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$result = wp_register_script(
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$script_handle,
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plugins_url( $script_path, $metadata['file'] ),
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$script_asset['dependencies'],
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$script_asset['version']
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);
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return $result ? $script_handle : false;
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}
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/**
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* Finds a style handle for the block metadata field. It detects when a path
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* to file was provided and registers the style under automatically
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* generated handle name. It returns unprocessed style handle otherwise.
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*
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* @since 5.5.0
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*
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* @param array $metadata Block metadata.
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* @param string $field_name Field name to pick from metadata.
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* @return string|boolean Style handle provided directly or created through
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* style's registration, or false on failure.
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*/
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function register_block_style_handle( $metadata, $field_name ) {
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if ( empty( $metadata[ $field_name ] ) ) {
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return false;
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}
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$style_handle = $metadata[ $field_name ];
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$style_path = remove_block_asset_path_prefix( $metadata[ $field_name ] );
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if ( $style_handle === $style_path ) {
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return $style_handle;
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}
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$style_handle = generate_block_asset_handle( $metadata['name'], $field_name );
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$block_dir = dirname( $metadata['file'] );
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$result = wp_register_style(
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$style_handle,
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plugins_url( $style_path, $metadata['file'] ),
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array(),
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filemtime( realpath( "$block_dir/$style_path" ) )
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);
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return $result ? $style_handle : false;
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}
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/**
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* Registers a block type from metadata stored in the `block.json` file.
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*
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* @since 5.5.0
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*
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* @param string $file_or_folder Path to the JSON file with metadata definition for
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* the block or path to the folder where the `block.json` file is located.
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* @param array $args {
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* Optional. Array of block type arguments. Accepts any public property of `WP_Block_Type`.
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* Any arguments may be defined, however the ones described below are supported by default.
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* Default empty array.
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*
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* @type callable $render_callback Callback used to render blocks of this block type.
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* }
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* @return WP_Block_Type|false The registered block type on success, or false on failure.
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*/
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function register_block_type_from_metadata( $file_or_folder, $args = array() ) {
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$filename = 'block.json';
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$metadata_file = ( substr( $file_or_folder, -strlen( $filename ) ) !== $filename ) ?
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trailingslashit( $file_or_folder ) . $filename :
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$file_or_folder;
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if ( ! file_exists( $metadata_file ) ) {
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return false;
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}
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$metadata = json_decode( file_get_contents( $metadata_file ), true );
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if ( ! is_array( $metadata ) || empty( $metadata['name'] ) ) {
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return false;
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}
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$metadata['file'] = $metadata_file;
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$settings = array();
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$property_mappings = array(
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'title' => 'title',
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'category' => 'category',
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'parent' => 'parent',
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'icon' => 'icon',
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'description' => 'description',
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'keywords' => 'keywords',
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'attributes' => 'attributes',
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'providesContext' => 'provides_context',
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'usesContext' => 'uses_context',
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'supports' => 'supports',
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'styles' => 'styles',
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'example' => 'example',
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);
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foreach ( $property_mappings as $key => $mapped_key ) {
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if ( isset( $metadata[ $key ] ) ) {
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$settings[ $mapped_key ] = $metadata[ $key ];
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}
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}
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if ( ! empty( $metadata['editorScript'] ) ) {
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$settings['editor_script'] = register_block_script_handle(
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$metadata,
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'editorScript'
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);
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}
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if ( ! empty( $metadata['script'] ) ) {
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$settings['script'] = register_block_script_handle(
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$metadata,
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'script'
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);
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}
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if ( ! empty( $metadata['editorStyle'] ) ) {
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$settings['editor_style'] = register_block_style_handle(
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$metadata,
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'editorStyle'
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);
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}
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if ( ! empty( $metadata['style'] ) ) {
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$settings['style'] = register_block_style_handle(
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$metadata,
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'style'
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);
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}
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return register_block_type(
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$metadata['name'],
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array_merge(
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$settings,
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$args
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)
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);
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}
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/**
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* Determine whether a post or content string has blocks.
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*
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* This test optimizes for performance rather than strict accuracy, detecting
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* the pattern of a block but not validating its structure. For strict accuracy,
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* you should use the block parser on post content.
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*
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* @since 5.0.0
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*
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* @see parse_blocks()
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*
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* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
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* @return bool Whether the post has blocks.
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*/
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function has_blocks( $post = null ) {
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if ( ! is_string( $post ) ) {
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$wp_post = get_post( $post );
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if ( $wp_post instanceof WP_Post ) {
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$post = $wp_post->post_content;
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}
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}
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return false !== strpos( (string) $post, '<!-- wp:' );
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}
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/**
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* Determine whether a $post or a string contains a specific block type.
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*
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* This test optimizes for performance rather than strict accuracy, detecting
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* the block type exists but not validating its structure. For strict accuracy,
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* you should use the block parser on post content.
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*
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* @since 5.0.0
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*
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* @see parse_blocks()
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*
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* @param string $block_name Full Block type to look for.
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* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
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* @return bool Whether the post content contains the specified block.
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*/
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function has_block( $block_name, $post = null ) {
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if ( ! has_blocks( $post ) ) {
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return false;
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}
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if ( ! is_string( $post ) ) {
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$wp_post = get_post( $post );
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if ( $wp_post instanceof WP_Post ) {
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$post = $wp_post->post_content;
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}
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}
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/*
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* Normalize block name to include namespace, if provided as non-namespaced.
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* This matches behavior for WordPress 5.0.0 - 5.3.0 in matching blocks by
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* their serialized names.
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*/
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if ( false === strpos( $block_name, '/' ) ) {
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$block_name = 'core/' . $block_name;
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}
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// Test for existence of block by its fully qualified name.
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$has_block = false !== strpos( $post, '<!-- wp:' . $block_name . ' ' );
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if ( ! $has_block ) {
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/*
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* If the given block name would serialize to a different name, test for
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* existence by the serialized form.
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*/
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$serialized_block_name = strip_core_block_namespace( $block_name );
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if ( $serialized_block_name !== $block_name ) {
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$has_block = false !== strpos( $post, '<!-- wp:' . $serialized_block_name . ' ' );
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}
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}
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return $has_block;
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}
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/**
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* Returns an array of the names of all registered dynamic block types.
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*
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* @since 5.0.0
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*
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* @return string[] Array of dynamic block names.
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*/
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function get_dynamic_block_names() {
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$dynamic_block_names = array();
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$block_types = WP_Block_Type_Registry::get_instance()->get_all_registered();
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foreach ( $block_types as $block_type ) {
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if ( $block_type->is_dynamic() ) {
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$dynamic_block_names[] = $block_type->name;
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}
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}
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return $dynamic_block_names;
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}
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/**
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* Given an array of attributes, returns a string in the serialized attributes
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* format prepared for post content.
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*
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* The serialized result is a JSON-encoded string, with unicode escape sequence
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* substitution for characters which might otherwise interfere with embedding
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* the result in an HTML comment.
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*
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* @since 5.3.1
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*
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* @param array $block_attributes Attributes object.
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* @return string Serialized attributes.
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*/
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function serialize_block_attributes( $block_attributes ) {
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$encoded_attributes = json_encode( $block_attributes );
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$encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes );
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$encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes );
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$encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes );
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$encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes );
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// Regex: /\\"/
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$encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes );
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return $encoded_attributes;
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}
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/**
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* Returns the block name to use for serialization. This will remove the default
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* "core/" namespace from a block name.
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*
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* @since 5.3.1
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*
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* @param string $block_name Original block name.
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* @return string Block name to use for serialization.
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*/
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function strip_core_block_namespace( $block_name = null ) {
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if ( is_string( $block_name ) && 0 === strpos( $block_name, 'core/' ) ) {
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return substr( $block_name, 5 );
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}
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return $block_name;
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}
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/**
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* Returns the content of a block, including comment delimiters.
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*
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* @since 5.3.1
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*
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* @param string $block_name Block name.
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* @param array $block_attributes Block attributes.
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* @param string $block_content Block save content.
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* @return string Comment-delimited block content.
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*/
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function get_comment_delimited_block_content( $block_name = null, $block_attributes, $block_content ) {
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if ( is_null( $block_name ) ) {
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return $block_content;
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}
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$serialized_block_name = strip_core_block_namespace( $block_name );
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$serialized_attributes = empty( $block_attributes ) ? '' : serialize_block_attributes( $block_attributes ) . ' ';
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if ( empty( $block_content ) ) {
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return sprintf( '<!-- wp:%s %s/-->', $serialized_block_name, $serialized_attributes );
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}
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return sprintf(
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'<!-- wp:%s %s-->%s<!-- /wp:%s -->',
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$serialized_block_name,
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$serialized_attributes,
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$block_content,
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$serialized_block_name
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);
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}
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/**
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* Returns the content of a block, including comment delimiters, serializing all
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* attributes from the given parsed block.
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*
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* This should be used when preparing a block to be saved to post content.
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* Prefer `render_block` when preparing a block for display. Unlike
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* `render_block`, this does not evaluate a block's `render_callback`, and will
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* instead preserve the markup as parsed.
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*
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* @since 5.3.1
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*
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* @param WP_Block_Parser_Block $block A single parsed block object.
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* @return string String of rendered HTML.
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*/
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function serialize_block( $block ) {
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$block_content = '';
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$index = 0;
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foreach ( $block['innerContent'] as $chunk ) {
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$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
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}
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if ( ! is_array( $block['attrs'] ) ) {
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$block['attrs'] = array();
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}
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return get_comment_delimited_block_content(
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$block['blockName'],
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$block['attrs'],
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$block_content
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);
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}
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/**
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* Returns a joined string of the aggregate serialization of the given parsed
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* blocks.
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*
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* @since 5.3.1
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*
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* @param WP_Block_Parser_Block[] $blocks Parsed block objects.
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* @return string String of rendered HTML.
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*/
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function serialize_blocks( $blocks ) {
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return implode( '', array_map( 'serialize_block', $blocks ) );
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}
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/**
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* Filters and sanitizes block content to remove non-allowable HTML from
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* parsed block attribute values.
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*
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* @since 5.3.1
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*
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* @param string $text Text that may contain block content.
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* @param array[]|string $allowed_html An array of allowed HTML elements
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* and attributes, or a context name
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* such as 'post'.
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* @param string[] $allowed_protocols Array of allowed URL protocols.
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* @return string The filtered and sanitized content result.
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*/
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function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) {
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$result = '';
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$blocks = parse_blocks( $text );
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foreach ( $blocks as $block ) {
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$block = filter_block_kses( $block, $allowed_html, $allowed_protocols );
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$result .= serialize_block( $block );
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}
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return $result;
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}
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/**
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* Filters and sanitizes a parsed block to remove non-allowable HTML from block
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* attribute values.
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*
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* @since 5.3.1
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*
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* @param WP_Block_Parser_Block $block The parsed block object.
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* @param array[]|string $allowed_html An array of allowed HTML
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* elements and attributes, or a
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* context name such as 'post'.
|
|
* @param string[] $allowed_protocols Allowed URL protocols.
|
|
* @return array The filtered and sanitized block object result.
|
|
*/
|
|
function filter_block_kses( $block, $allowed_html, $allowed_protocols = array() ) {
|
|
$block['attrs'] = filter_block_kses_value( $block['attrs'], $allowed_html, $allowed_protocols );
|
|
|
|
if ( is_array( $block['innerBlocks'] ) ) {
|
|
foreach ( $block['innerBlocks'] as $i => $inner_block ) {
|
|
$block['innerBlocks'][ $i ] = filter_block_kses( $inner_block, $allowed_html, $allowed_protocols );
|
|
}
|
|
}
|
|
|
|
return $block;
|
|
}
|
|
|
|
/**
|
|
* Filters and sanitizes a parsed block attribute value to remove non-allowable
|
|
* HTML.
|
|
*
|
|
* @since 5.3.1
|
|
*
|
|
* @param string[]|string $value The attribute value to filter.
|
|
* @param array[]|string $allowed_html An array of allowed HTML elements
|
|
* and attributes, or a context name
|
|
* such as 'post'.
|
|
* @param string[] $allowed_protocols Array of allowed URL protocols.
|
|
* @return string[]|string The filtered and sanitized result.
|
|
*/
|
|
function filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array() ) {
|
|
if ( is_array( $value ) ) {
|
|
foreach ( $value as $key => $inner_value ) {
|
|
$filtered_key = filter_block_kses_value( $key, $allowed_html, $allowed_protocols );
|
|
$filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols );
|
|
|
|
if ( $filtered_key !== $key ) {
|
|
unset( $value[ $key ] );
|
|
}
|
|
|
|
$value[ $filtered_key ] = $filtered_value;
|
|
}
|
|
} elseif ( is_string( $value ) ) {
|
|
return wp_kses( $value, $allowed_html, $allowed_protocols );
|
|
}
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* 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_inner_blocks = array(
|
|
// Classic blocks have their blockName set to null.
|
|
null,
|
|
'core/freeform',
|
|
'core/heading',
|
|
'core/html',
|
|
'core/list',
|
|
'core/media-text',
|
|
'core/paragraph',
|
|
'core/preformatted',
|
|
'core/pullquote',
|
|
'core/quote',
|
|
'core/table',
|
|
'core/verse',
|
|
);
|
|
|
|
$allowed_blocks = array_merge( $allowed_inner_blocks, array( 'core/columns' ) );
|
|
|
|
/**
|
|
* 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 5.0.0
|
|
*
|
|
* @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 ) ) {
|
|
if ( ! empty( $block['innerBlocks'] ) ) {
|
|
if ( 'core/columns' === $block['blockName'] ) {
|
|
$output .= _excerpt_render_inner_columns_blocks( $block, $allowed_inner_blocks );
|
|
continue;
|
|
}
|
|
|
|
// Skip the block if it has disallowed or nested inner blocks.
|
|
foreach ( $block['innerBlocks'] as $inner_block ) {
|
|
if (
|
|
! in_array( $inner_block['blockName'], $allowed_inner_blocks, true ) ||
|
|
! empty( $inner_block['innerBlocks'] )
|
|
) {
|
|
continue 2;
|
|
}
|
|
}
|
|
}
|
|
|
|
$output .= render_block( $block );
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Render inner blocks from the `core/columns` block for generating an excerpt.
|
|
*
|
|
* @since 5.2.0
|
|
* @access private
|
|
*
|
|
* @param array $columns The parsed columns block.
|
|
* @param array $allowed_blocks The list of allowed inner blocks.
|
|
* @return string The rendered inner blocks.
|
|
*/
|
|
function _excerpt_render_inner_columns_blocks( $columns, $allowed_blocks ) {
|
|
$output = '';
|
|
|
|
foreach ( $columns['innerBlocks'] as $column ) {
|
|
foreach ( $column['innerBlocks'] as $inner_block ) {
|
|
if ( in_array( $inner_block['blockName'], $allowed_blocks, true ) && empty( $inner_block['innerBlocks'] ) ) {
|
|
$output .= render_block( $inner_block );
|
|
}
|
|
}
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Renders a single block into a HTML string.
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @global WP_Post $post The post to edit.
|
|
* @global WP_Query $wp_query WordPress Query object.
|
|
*
|
|
* @param array $parsed_block A single parsed block object.
|
|
* @return string String of rendered HTML.
|
|
*/
|
|
function render_block( $parsed_block ) {
|
|
global $post, $wp_query;
|
|
|
|
/**
|
|
* Allows render_block() to be short-circuited, by returning a non-null value.
|
|
*
|
|
* @since 5.1.0
|
|
*
|
|
* @param string|null $pre_render The pre-rendered content. Default null.
|
|
* @param array $parsed_block The block being rendered.
|
|
*/
|
|
$pre_render = apply_filters( 'pre_render_block', null, $parsed_block );
|
|
if ( ! is_null( $pre_render ) ) {
|
|
return $pre_render;
|
|
}
|
|
|
|
$source_block = $parsed_block;
|
|
|
|
/**
|
|
* Filters the block being rendered in render_block(), before it's processed.
|
|
*
|
|
* @since 5.1.0
|
|
*
|
|
* @param array $parsed_block The block being rendered.
|
|
* @param array $source_block An un-modified copy of $parsed_block, as it appeared in the source content.
|
|
*/
|
|
$parsed_block = apply_filters( 'render_block_data', $parsed_block, $source_block );
|
|
|
|
$context = array();
|
|
|
|
if ( $post instanceof WP_Post ) {
|
|
$context['postId'] = $post->ID;
|
|
|
|
/*
|
|
* The `postType` context is largely unnecessary server-side, since the ID
|
|
* is usually sufficient on its own. That being said, since a block's
|
|
* manifest is expected to be shared between the server and the client,
|
|
* it should be included to consistently fulfill the expectation.
|
|
*/
|
|
$context['postType'] = $post->post_type;
|
|
}
|
|
|
|
if ( $wp_query instanceof WP_Query && isset( $wp_query->tax_query->queried_terms['category'] ) ) {
|
|
$context['query'] = array( 'categoryIds' => array() );
|
|
foreach ( $wp_query->tax_query->queried_terms['category']['terms'] as $category_slug_or_id ) {
|
|
$context['query']['categoryIds'][] = 'slug' === $wp_query->tax_query->queried_terms['category']['field'] ? get_cat_ID( $category_slug_or_id ) : $category_slug_or_id;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Filters the default context provided to a rendered block.
|
|
*
|
|
* @since 5.5.0
|
|
*
|
|
* @param array $context Default context.
|
|
* @param array $parsed_block Block being rendered, filtered by `render_block_data`.
|
|
*/
|
|
$context = apply_filters( 'render_block_context', $context, $parsed_block );
|
|
|
|
$block = new WP_Block( $parsed_block, $context );
|
|
|
|
return $block->render();
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
* @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 wpautop() 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;
|
|
}
|
|
|
|
/**
|
|
* Registers a new block style.
|
|
*
|
|
* @since 5.3.0
|
|
*
|
|
* @param string $block_name Block type name including namespace.
|
|
* @param array $style_properties Array containing the properties of the style name,
|
|
* label, style (name of the stylesheet to be enqueued),
|
|
* inline_style (string containing the CSS to be added).
|
|
* @return boolean True if the block style was registered with success and false otherwise.
|
|
*/
|
|
function register_block_style( $block_name, $style_properties ) {
|
|
return WP_Block_Styles_Registry::get_instance()->register( $block_name, $style_properties );
|
|
}
|
|
|
|
/**
|
|
* Unregisters a block style.
|
|
*
|
|
* @since 5.3.0
|
|
*
|
|
* @param string $block_name Block type name including namespace.
|
|
* @param array $block_style_name Block style name.
|
|
* @return boolean True if the block style was unregistered with success and false otherwise.
|
|
*/
|
|
function unregister_block_style( $block_name, $block_style_name ) {
|
|
return WP_Block_Styles_Registry::get_instance()->unregister( $block_name, $block_style_name );
|
|
}
|