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327852393a
It aligns with the changes proposed added in Gutenberg: https://github.com/WordPress/gutenberg/pull/33293. The idea here is to split the growing webpack config into two parts: blocks and packages. We need to add handling for JavaScript files that are going to be used with blocks on the frontend. They didn't work quite well with the current setup for entry points created for packages. As part of the effort, it adds support for `viewScript` in `block.json` metadata file that is later translated to `$view_script` in `WP_Block_Type` class and exposed as `view_script` from the REST API endpoint for block types. Props youknowriad, desrosj, aristath. Fixes #53690. Built from https://develop.svn.wordpress.org/trunk@51501 git-svn-id: http://core.svn.wordpress.org/trunk@51112 1a063a9b-81f0-0310-95a4-ce76da25c4cd
374 lines
9.3 KiB
PHP
374 lines
9.3 KiB
PHP
<?php
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/**
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* Blocks API: WP_Block_Type class
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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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* Core class representing a block type.
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*
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* @since 5.0.0
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*
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* @see register_block_type()
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*/
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class WP_Block_Type {
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/**
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* Block API version.
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*
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* @since 5.6.0
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* @var int
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*/
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public $api_version = 1;
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/**
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* Block type key.
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*
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* @since 5.0.0
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* @var string
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*/
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public $name;
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/**
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* Human-readable block type label.
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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 $title = '';
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/**
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* Block type category classification, used in search interfaces
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* to arrange block types by category.
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*
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* @since 5.5.0
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* @var string|null
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*/
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public $category = null;
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/**
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* Setting parent lets a block require that it is only available
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* when nested within the specified blocks.
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*
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* @since 5.5.0
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* @var array|null
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*/
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public $parent = null;
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/**
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* Block type icon.
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*
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* @since 5.5.0
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* @var string|null
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*/
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public $icon = null;
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/**
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* A detailed block type description.
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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 $description = '';
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/**
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* Additional keywords to produce block type as result
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* in search interfaces.
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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 $keywords = array();
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/**
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* The translation textdomain.
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*
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* @since 5.5.0
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* @var string|null
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*/
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public $textdomain = null;
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/**
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* Alternative block styles.
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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 $styles = array();
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/**
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* Block variations.
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*
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* @since 5.8.0
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* @var array
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*/
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public $variations = array();
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/**
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* Supported features.
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*
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* @since 5.5.0
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* @var array|null
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*/
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public $supports = null;
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/**
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* Structured data for the block preview.
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*
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* @since 5.5.0
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* @var array|null
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*/
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public $example = null;
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/**
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* Block type render callback.
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*
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* @since 5.0.0
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* @var callable
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*/
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public $render_callback = null;
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/**
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* Block type attributes property schemas.
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*
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* @since 5.0.0
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* @var array|null
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*/
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public $attributes = null;
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/**
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* Context values inherited by blocks of this type.
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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 $uses_context = array();
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/**
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* Context provided by blocks of this type.
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*
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* @since 5.5.0
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* @var array|null
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*/
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public $provides_context = null;
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/**
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* Block type editor only script handle.
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*
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* @since 5.0.0
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* @var string|null
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*/
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public $editor_script = null;
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/**
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* Block type front end and editor script handle.
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*
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* @since 5.0.0
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* @var string|null
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*/
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public $script = null;
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/**
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* Block type front end only script handle.
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*
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* @since 5.9.0
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* @var string|null
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*/
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public $view_script = null;
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/**
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* Block type editor only style handle.
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*
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* @since 5.0.0
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* @var string|null
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*/
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public $editor_style = null;
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/**
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* Block type front end and editor style handle.
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*
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* @since 5.0.0
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* @var string|null
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*/
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public $style = null;
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/**
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* Constructor.
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*
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* Will populate object properties from the provided arguments.
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*
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* @since 5.0.0
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* @since 5.5.0 Added the `title`, `category`, `parent`, `icon`, `description`,
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* `keywords`, `textdomain`, `styles`, `supports`, `example`,
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* `uses_context`, and `provides_context` properties.
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* @since 5.6.0 Added the `api_version` property.
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* @since 5.8.0 Added the `variations` property.
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* @since 5.9.0 Added the `view_script` property.
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*
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* @see register_block_type()
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*
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* @param string $block_type Block type name including namespace.
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* @param array|string $args {
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* Optional. Array or string of arguments for registering a block type. Any arguments may be defined,
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* however the ones described below are supported by default. Default empty array.
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*
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* @type string $api_version Block API version.
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* @type string $title Human-readable block type label.
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* @type string|null $category Block type category classification, used in
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* search interfaces to arrange block types by category.
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* @type array|null $parent Setting parent lets a block require that it is only
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* available when nested within the specified blocks.
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* @type string|null $icon Block type icon.
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* @type string $description A detailed block type description.
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* @type array $keywords Additional keywords to produce block type as
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* result in search interfaces.
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* @type string|null $textdomain The translation textdomain.
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* @type array $styles Alternative block styles.
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* @type array $variations Block variations.
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* @type array|null $supports Supported features.
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* @type array|null $example Structured data for the block preview.
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* @type callable|null $render_callback Block type render callback.
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* @type array|null $attributes Block type attributes property schemas.
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* @type array $uses_context Context values inherited by blocks of this type.
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* @type array|null $provides_context Context provided by blocks of this type.
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* @type string|null $editor_script Block type editor only script handle.
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* @type string|null $script Block type front end and editor script handle.
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* @type string|null $view_script Block type front end only script handle.
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* @type string|null $editor_style Block type editor only style handle.
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* @type string|null $style Block type front end and editor style handle.
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* }
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*/
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public function __construct( $block_type, $args = array() ) {
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$this->name = $block_type;
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$this->set_props( $args );
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}
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/**
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* Renders the block type output for given attributes.
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*
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* @since 5.0.0
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*
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* @param array $attributes Optional. Block attributes. Default empty array.
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* @param string $content Optional. Block content. Default empty string.
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* @return string Rendered block type output.
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*/
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public function render( $attributes = array(), $content = '' ) {
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if ( ! $this->is_dynamic() ) {
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return '';
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}
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$attributes = $this->prepare_attributes_for_render( $attributes );
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return (string) call_user_func( $this->render_callback, $attributes, $content );
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}
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/**
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* Returns true if the block type is dynamic, or false otherwise. A dynamic
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* block is one which defers its rendering to occur on-demand at runtime.
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*
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* @since 5.0.0
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*
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* @return bool Whether block type is dynamic.
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*/
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public function is_dynamic() {
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return is_callable( $this->render_callback );
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}
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/**
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* Validates attributes against the current block schema, populating
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* defaulted and missing values.
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*
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* @since 5.0.0
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*
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* @param array $attributes Original block attributes.
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* @return array Prepared block attributes.
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*/
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public function prepare_attributes_for_render( $attributes ) {
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// If there are no attribute definitions for the block type, skip
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// processing and return verbatim.
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if ( ! isset( $this->attributes ) ) {
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return $attributes;
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}
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foreach ( $attributes as $attribute_name => $value ) {
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// If the attribute is not defined by the block type, it cannot be
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// validated.
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if ( ! isset( $this->attributes[ $attribute_name ] ) ) {
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continue;
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}
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$schema = $this->attributes[ $attribute_name ];
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// Validate value by JSON schema. An invalid value should revert to
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// its default, if one exists. This occurs by virtue of the missing
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// attributes loop immediately following. If there is not a default
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// assigned, the attribute value should remain unset.
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$is_valid = rest_validate_value_from_schema( $value, $schema, $attribute_name );
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if ( is_wp_error( $is_valid ) ) {
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unset( $attributes[ $attribute_name ] );
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}
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}
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// Populate values of any missing attributes for which the block type
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// defines a default.
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$missing_schema_attributes = array_diff_key( $this->attributes, $attributes );
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foreach ( $missing_schema_attributes as $attribute_name => $schema ) {
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if ( isset( $schema['default'] ) ) {
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$attributes[ $attribute_name ] = $schema['default'];
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}
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}
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return $attributes;
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}
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/**
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* Sets block type properties.
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*
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* @since 5.0.0
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*
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* @param array|string $args Array or string of arguments for registering a block type.
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* See WP_Block_Type::__construct() for information on accepted arguments.
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*/
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public function set_props( $args ) {
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$args = wp_parse_args(
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$args,
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array(
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'render_callback' => null,
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)
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);
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$args['name'] = $this->name;
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/**
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* Filters the arguments for registering a block type.
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*
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* @since 5.5.0
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*
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* @param array $args Array of arguments for registering a block type.
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* @param string $block_type Block type name including namespace.
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*/
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$args = apply_filters( 'register_block_type_args', $args, $this->name );
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foreach ( $args as $property_name => $property_value ) {
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$this->$property_name = $property_value;
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}
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}
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/**
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* Get all available block attributes including possible layout attribute from Columns block.
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*
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* @since 5.0.0
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*
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* @return array Array of attributes.
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*/
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public function get_attributes() {
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return is_array( $this->attributes ) ?
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$this->attributes :
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array();
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}
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}
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