638 lines
17 KiB
PHP
638 lines
17 KiB
PHP
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<?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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#[AllowDynamicProperties]
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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 string[]|null
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*/
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public $parent = null;
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/**
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* Setting ancestor makes a block available only inside the specified
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* block types at any position of the ancestor's block subtree.
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*
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* @since 6.0.0
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* @var string[]|null
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*/
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public $ancestor = null;
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/**
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* Limits which block types can be inserted as children of this block type.
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*
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* @since 6.5.0
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* @var string[]|null
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*/
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public $allowed_blocks = 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 string[]
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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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* @since 6.5.0 Only accessible through magic getter. null by default.
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* @var array[]|null
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*/
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private $variations = null;
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/**
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* Block variations callback.
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*
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* @since 6.5.0
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* @var callable|null
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*/
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public $variation_callback = null;
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/**
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* Custom CSS selectors for theme.json style generation.
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*
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* @since 6.3.0
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* @var array
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*/
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public $selectors = 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 string[]
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*/
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private $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 string[]|null
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*/
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public $provides_context = null;
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/**
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* Block hooks for this block type.
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*
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* A block hook is specified by a block type and a relative position.
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* The hooked block will be automatically inserted in the given position
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* next to the "anchor" block whenever the latter is encountered.
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*
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* @since 6.4.0
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* @var string[]
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*/
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public $block_hooks = array();
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/**
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* Block type editor only script handles.
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*
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* @since 6.1.0
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* @var string[]
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*/
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public $editor_script_handles = array();
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/**
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* Block type front end and editor script handles.
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*
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* @since 6.1.0
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* @var string[]
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*/
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public $script_handles = array();
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/**
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* Block type front end only script handles.
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*
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* @since 6.1.0
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* @var string[]
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*/
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public $view_script_handles = array();
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/**
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* Block type front end only script module IDs.
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*
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* @since 6.5.0
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* @var string[]
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*/
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public $view_script_module_ids = array();
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/**
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* Block type editor only style handles.
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*
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* @since 6.1.0
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* @var string[]
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*/
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public $editor_style_handles = array();
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/**
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* Block type front end and editor style handles.
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*
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* @since 6.1.0
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* @var string[]
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*/
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public $style_handles = array();
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/**
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* Block type front end only style handles.
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*
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* @since 6.5.0
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* @var string[]
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*/
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public $view_style_handles = array();
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/**
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* Deprecated block type properties for script and style handles.
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*
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* @since 6.1.0
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* @var string[]
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*/
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private $deprecated_properties = array(
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'editor_script',
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'script',
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'view_script',
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'editor_style',
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'style',
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);
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/**
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* Attributes supported by every block.
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*
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* @since 6.0.0 Added `lock`.
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* @since 6.5.0 Added `metadata`.
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* @var array
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*/
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const GLOBAL_ATTRIBUTES = array(
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'lock' => array( 'type' => 'object' ),
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'metadata' => array( 'type' => 'object' ),
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);
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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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* @since 6.0.0 Added the `ancestor` property.
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* @since 6.1.0 Added the `editor_script_handles`, `script_handles`, `view_script_handles,
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* `editor_style_handles`, and `style_handles` properties.
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* Deprecated the `editor_script`, `script`, `view_script`, `editor_style`, and `style` properties.
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* @since 6.3.0 Added the `selectors` property.
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* @since 6.4.0 Added the `block_hooks` property.
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* @since 6.5.0 Added the `view_style_handles` 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 string[]|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 $ancestor Setting ancestor makes a block available only inside the specified
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* block types at any position of the ancestor's block subtree.
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* @type string[]|null $allowed_blocks Limits which block types can be inserted as children of this block type.
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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 string[] $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 $selectors Custom CSS selectors for theme.json style generation.
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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 callable|null $variation_callback Block type variations callback.
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* @type array|null $attributes Block type attributes property schemas.
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* @type string[] $uses_context Context values inherited by blocks of this type.
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* @type string[]|null $provides_context Context provided by blocks of this type.
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* @type string[] $block_hooks Block hooks.
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* @type string[] $editor_script_handles Block type editor only script handles.
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* @type string[] $script_handles Block type front end and editor script handles.
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* @type string[] $view_script_handles Block type front end only script handles.
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* @type string[] $editor_style_handles Block type editor only style handles.
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* @type string[] $style_handles Block type front end and editor style handles.
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* @type string[] $view_style_handles Block type front end only style handles.
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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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* Proxies getting values for deprecated properties for script and style handles for backward compatibility.
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* Gets the value for the corresponding new property if the first item in the array provided.
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*
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* @since 6.1.0
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*
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* @param string $name Deprecated property name.
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*
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* @return string|string[]|null|void The value read from the new property if the first item in the array provided,
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* null when value not found, or void when unknown property name provided.
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*/
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public function __get( $name ) {
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if ( 'variations' === $name ) {
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return $this->get_variations();
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}
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if ( 'uses_context' === $name ) {
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return $this->get_uses_context();
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}
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if ( ! in_array( $name, $this->deprecated_properties, true ) ) {
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return;
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}
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$new_name = $name . '_handles';
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if ( ! property_exists( $this, $new_name ) || ! is_array( $this->{$new_name} ) ) {
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return null;
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}
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if ( count( $this->{$new_name} ) > 1 ) {
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return $this->{$new_name};
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}
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return isset( $this->{$new_name}[0] ) ? $this->{$new_name}[0] : null;
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}
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/**
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* Proxies checking for deprecated properties for script and style handles for backward compatibility.
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* Checks whether the corresponding new property has the first item in the array provided.
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*
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* @since 6.1.0
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*
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* @param string $name Deprecated property name.
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*
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* @return bool Returns true when for the new property the first item in the array exists,
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* or false otherwise.
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*/
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public function __isset( $name ) {
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if ( in_array( $name, array( 'variations', 'uses_context' ), true ) ) {
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return true;
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}
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if ( ! in_array( $name, $this->deprecated_properties, true ) ) {
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return false;
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}
|
||
|
|
|
||
|
|
$new_name = $name . '_handles';
|
||
|
|
return isset( $this->{$new_name}[0] );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Proxies setting values for deprecated properties for script and style handles for backward compatibility.
|
||
|
|
* Sets the value for the corresponding new property as the first item in the array.
|
||
|
|
* It also allows setting custom properties for backward compatibility.
|
||
|
|
*
|
||
|
|
* @since 6.1.0
|
||
|
|
*
|
||
|
|
* @param string $name Property name.
|
||
|
|
* @param mixed $value Property value.
|
||
|
|
*/
|
||
|
|
public function __set( $name, $value ) {
|
||
|
|
if ( ! in_array( $name, $this->deprecated_properties, true ) ) {
|
||
|
|
$this->{$name} = $value;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$new_name = $name . '_handles';
|
||
|
|
|
||
|
|
if ( is_array( $value ) ) {
|
||
|
|
$filtered = array_filter( $value, 'is_string' );
|
||
|
|
|
||
|
|
if ( count( $filtered ) !== count( $value ) ) {
|
||
|
|
_doing_it_wrong(
|
||
|
|
__METHOD__,
|
||
|
|
sprintf(
|
||
|
|
/* translators: %s: The '$value' argument. */
|
||
|
|
__( 'The %s argument must be a string or a string array.' ),
|
||
|
|
'<code>$value</code>'
|
||
|
|
),
|
||
|
|
'6.1.0'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->{$new_name} = array_values( $filtered );
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( ! is_string( $value ) ) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$this->{$new_name} = array( $value );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Renders the block type output for given attributes.
|
||
|
|
*
|
||
|
|
* @since 5.0.0
|
||
|
|
*
|
||
|
|
* @param array $attributes Optional. Block attributes. Default empty array.
|
||
|
|
* @param string $content Optional. Block content. Default empty string.
|
||
|
|
* @return string Rendered block type output.
|
||
|
|
*/
|
||
|
|
public function render( $attributes = array(), $content = '' ) {
|
||
|
|
if ( ! $this->is_dynamic() ) {
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
|
||
|
|
$attributes = $this->prepare_attributes_for_render( $attributes );
|
||
|
|
|
||
|
|
return (string) call_user_func( $this->render_callback, $attributes, $content );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns true if the block type is dynamic, or false otherwise. A dynamic
|
||
|
|
* block is one which defers its rendering to occur on-demand at runtime.
|
||
|
|
*
|
||
|
|
* @since 5.0.0
|
||
|
|
*
|
||
|
|
* @return bool Whether block type is dynamic.
|
||
|
|
*/
|
||
|
|
public function is_dynamic() {
|
||
|
|
return is_callable( $this->render_callback );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Validates attributes against the current block schema, populating
|
||
|
|
* defaulted and missing values.
|
||
|
|
*
|
||
|
|
* @since 5.0.0
|
||
|
|
*
|
||
|
|
* @param array $attributes Original block attributes.
|
||
|
|
* @return array Prepared block attributes.
|
||
|
|
*/
|
||
|
|
public function prepare_attributes_for_render( $attributes ) {
|
||
|
|
// If there are no attribute definitions for the block type, skip
|
||
|
|
// processing and return verbatim.
|
||
|
|
if ( ! isset( $this->attributes ) ) {
|
||
|
|
return $attributes;
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ( $attributes as $attribute_name => $value ) {
|
||
|
|
// If the attribute is not defined by the block type, it cannot be
|
||
|
|
// validated.
|
||
|
|
if ( ! isset( $this->attributes[ $attribute_name ] ) ) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
$schema = $this->attributes[ $attribute_name ];
|
||
|
|
|
||
|
|
// Validate value by JSON schema. An invalid value should revert to
|
||
|
|
// its default, if one exists. This occurs by virtue of the missing
|
||
|
|
// attributes loop immediately following. If there is not a default
|
||
|
|
// assigned, the attribute value should remain unset.
|
||
|
|
$is_valid = rest_validate_value_from_schema( $value, $schema, $attribute_name );
|
||
|
|
if ( is_wp_error( $is_valid ) ) {
|
||
|
|
unset( $attributes[ $attribute_name ] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Populate values of any missing attributes for which the block type
|
||
|
|
// defines a default.
|
||
|
|
$missing_schema_attributes = array_diff_key( $this->attributes, $attributes );
|
||
|
|
foreach ( $missing_schema_attributes as $attribute_name => $schema ) {
|
||
|
|
if ( isset( $schema['default'] ) ) {
|
||
|
|
$attributes[ $attribute_name ] = $schema['default'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $attributes;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets block type properties.
|
||
|
|
*
|
||
|
|
* @since 5.0.0
|
||
|
|
*
|
||
|
|
* @param array|string $args Array or string of arguments for registering a block type.
|
||
|
|
* See WP_Block_Type::__construct() for information on accepted arguments.
|
||
|
|
*/
|
||
|
|
public function set_props( $args ) {
|
||
|
|
$args = wp_parse_args(
|
||
|
|
$args,
|
||
|
|
array(
|
||
|
|
'render_callback' => null,
|
||
|
|
)
|
||
|
|
);
|
||
|
|
|
||
|
|
$args['name'] = $this->name;
|
||
|
|
|
||
|
|
// Setup attributes if needed.
|
||
|
|
if ( ! isset( $args['attributes'] ) || ! is_array( $args['attributes'] ) ) {
|
||
|
|
$args['attributes'] = array();
|
||
|
|
}
|
||
|
|
|
||
|
|
// Register core attributes.
|
||
|
|
foreach ( static::GLOBAL_ATTRIBUTES as $attr_key => $attr_schema ) {
|
||
|
|
if ( ! array_key_exists( $attr_key, $args['attributes'] ) ) {
|
||
|
|
$args['attributes'][ $attr_key ] = $attr_schema;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filters the arguments for registering a block type.
|
||
|
|
*
|
||
|
|
* @since 5.5.0
|
||
|
|
*
|
||
|
|
* @param array $args Array of arguments for registering a block type.
|
||
|
|
* @param string $block_type Block type name including namespace.
|
||
|
|
*/
|
||
|
|
$args = apply_filters( 'register_block_type_args', $args, $this->name );
|
||
|
|
|
||
|
|
foreach ( $args as $property_name => $property_value ) {
|
||
|
|
$this->$property_name = $property_value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get all available block attributes including possible layout attribute from Columns block.
|
||
|
|
*
|
||
|
|
* @since 5.0.0
|
||
|
|
*
|
||
|
|
* @return array Array of attributes.
|
||
|
|
*/
|
||
|
|
public function get_attributes() {
|
||
|
|
return is_array( $this->attributes ) ?
|
||
|
|
$this->attributes :
|
||
|
|
array();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get block variations.
|
||
|
|
*
|
||
|
|
* @since 6.5.0
|
||
|
|
*
|
||
|
|
* @return array[]
|
||
|
|
*/
|
||
|
|
public function get_variations() {
|
||
|
|
if ( ! isset( $this->variations ) ) {
|
||
|
|
$this->variations = array();
|
||
|
|
if ( is_callable( $this->variation_callback ) ) {
|
||
|
|
$this->variations = call_user_func( $this->variation_callback );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Filters the registered variations for a block type.
|
||
|
|
*
|
||
|
|
* @since 6.5.0
|
||
|
|
*
|
||
|
|
* @param array $variations Array of registered variations for a block type.
|
||
|
|
* @param WP_Block_Type $block_type The full block type object.
|
||
|
|
*/
|
||
|
|
return apply_filters( 'get_block_type_variations', $this->variations, $this );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get block uses context.
|
||
|
|
*
|
||
|
|
* @since 6.5.0
|
||
|
|
*
|
||
|
|
* @return array[]
|
||
|
|
*/
|
||
|
|
public function get_uses_context() {
|
||
|
|
/**
|
||
|
|
* Filters the registered uses context for a block type.
|
||
|
|
*
|
||
|
|
* @since 6.5.0
|
||
|
|
*
|
||
|
|
* @param array $uses_context Array of registered uses context for a block type.
|
||
|
|
* @param WP_Block_Type $block_type The full block type object.
|
||
|
|
*/
|
||
|
|
return apply_filters( 'get_block_type_uses_context', $this->uses_context, $this );
|
||
|
|
}
|
||
|
|
}
|