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Great Design

Getting a Great Deal on Your Home Plans: Why Buy Direct?

Getting a Great Deal on Your Home Plans: Why Buy Direct?

Numerous influences – from finances to the desire for inter-generational joy, to health monitoring – are fueling the surge in multi-generational households. In our last post we looked at some of our most popular multi-generational home designs, showcasing various bedroom arrangements. Herein we’ll look at designs that also provide separate living areas.

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Exclusively Yours: Why Buy Direct?

Exclusively Yours: Why Buy Direct?

Design Basics values the relationships we have with select companies that also market our home plans. Quite simply, more people have the opportunity to consider our company’s designs when searching for a house plan. Which then begs the question, “Why buy directly from Design Basics?”

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Intelligent Traffic Flow

Intelligent Traffic Flow

TRAFFIC! Just hearing that word can make us cringe. The last thing we need inside our ‘home sweet home’ is issues with traffic! Whether we’re unwinding from the outside world or interacting with family members inside, we need our house design to foster tranquility.

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Designing with Natural Light

Designing with Natural Light

Home designers know natural light is one of the most important elements of residential design. We are drawn to places in our homes that are bathed in natural light and oftentimes we don’t even realize it. But whether we’re having friends over or simply curling up with...

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New Home Cost: Cheaper than Expected?

New Home Cost: Cheaper than Expected?

“When the price is higher, people tend to focus on the things that make it higher. When the price is lower people tend to focus on things explaining why it’s lower,” William Poundstone wrote in his book, Priceless. Which do you want? Prospective buyers touring your...

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A Great Elevation Helps Make the Sale

A Great Elevation Helps Make the Sale

Prospective customers rule you “in” or “out” based on your homes’ exteriors. It’s a fact. Overwhelmed by too many choices, buyers use shortcuts to narrow the number of home builders they will consider. One of those shortcuts is your elevation designs. Photographs can...

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Design Concept: Rear Foyers

Design Concept: Rear Foyers

Problem: Most families enter their home through the garage, but once you get inside, where does your stuff go? Where do you hang your jackets, stash your shoes, backpacks, handbags, etc.? And, when you leave in the morning how can you make it more convenient to get...

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Design Concept: Drop Zone

Design Concept: Drop Zone

Problem: Statements like, "When I get home, everything seems to end up on the kitchen table," or "Everything the kids walk in with gets left on the island," these and similar comments inspired one of our most popular Woman-Centric design innovations, the Drop Zone...

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Viewing: /var/www/designbasics/wp-includes/class-wp-block-bindings-registry.php

<?php
/**
 * Block Bindings API: WP_Block_Bindings_Registry class.
 *
 * Supports overriding content in blocks by connecting them to different sources.
 *
 * @package WordPress
 * @subpackage Block Bindings
 * @since 6.5.0
 */

/**
 * Core class used for interacting with block bindings sources.
 *
 * @since 6.5.0
 */
final class WP_Block_Bindings_Registry {

	/**
	 * Holds the registered block bindings sources, keyed by source identifier.
	 *
	 * @since 6.5.0
	 * @var WP_Block_Bindings_Source[]
	 */
	private $sources = array();

	/**
	 * Container for the main instance of the class.
	 *
	 * @since 6.5.0
	 * @var WP_Block_Bindings_Registry|null
	 */
	private static $instance = null;

	/**
	 * Supported source properties that can be passed to the registered source.
	 *
	 * @since 6.5.0
	 * @var string[]
	 */
	private $allowed_source_properties = array(
		'label',
		'get_value_callback',
		'uses_context',
	);

	/**
	 * Supported blocks that can use the block bindings API.
	 *
	 * @since 6.5.0
	 * @var string[]
	 */
	private $supported_blocks = array(
		'core/paragraph',
		'core/heading',
		'core/image',
		'core/button',
	);

	/**
	 * Registers a new block bindings source.
	 *
	 * This is a low-level method. For most use cases, it is recommended to use
	 * the `register_block_bindings_source()` function instead.
	 *
	 * @see register_block_bindings_source()
	 *
	 * Sources are used to override block's original attributes with a value
	 * coming from the source. Once a source is registered, it can be used by a
	 * block by setting its `metadata.bindings` attribute to a value that refers
	 * to the source.
	 *
	 * @since 6.5.0
	 *
	 * @param string $source_name       The name of the source. It must be a string containing a namespace prefix, i.e.
	 *                                  `my-plugin/my-custom-source`. It must only contain lowercase alphanumeric
	 *                                  characters, the forward slash `/` and dashes.
	 * @param array  $source_properties {
	 *     The array of arguments that are used to register a source.
	 *
	 *     @type string   $label              The label of the source.
	 *     @type callable $get_value_callback A callback executed when the source is processed during block rendering.
	 *                                        The callback should have the following signature:
	 *
	 *                                        `function( $source_args, $block_instance, $attribute_name ): mixed`
	 *                                            - @param array    $source_args    Array containing source arguments
	 *                                                                              used to look up the override value,
	 *                                                                              i.e. {"key": "foo"}.
	 *                                            - @param WP_Block $block_instance The block instance.
	 *                                            - @param string   $attribute_name The name of the target attribute.
	 *                                        The callback has a mixed return type; it may return a string to override
	 *                                        the block's original value, null, false to remove an attribute, etc.
	 *     @type string[] $uses_context       Optional. Array of values to add to block `uses_context` needed by the source.
	 * }
	 * @return WP_Block_Bindings_Source|false Source when the registration was successful, or `false` on failure.
	 */
	public function register( string $source_name, array $source_properties ) {
		if ( ! is_string( $source_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'Block bindings source name must be a string.' ),
				'6.5.0'
			);
			return false;
		}

		if ( preg_match( '/[A-Z]+/', $source_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'Block bindings source names must not contain uppercase characters.' ),
				'6.5.0'
			);
			return false;
		}

		$name_matcher = '/^[a-z0-9-]+\/[a-z0-9-]+$/';
		if ( ! preg_match( $name_matcher, $source_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'Block bindings source names must contain a namespace prefix. Example: my-plugin/my-custom-source' ),
				'6.5.0'
			);
			return false;
		}

		if ( $this->is_registered( $source_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				/* translators: %s: Block bindings source name. */
				sprintf( __( 'Block bindings source "%s" already registered.' ), $source_name ),
				'6.5.0'
			);
			return false;
		}

		// Validates that the source properties contain the label.
		if ( ! isset( $source_properties['label'] ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'The $source_properties must contain a "label".' ),
				'6.5.0'
			);
			return false;
		}

		// Validates that the source properties contain the get_value_callback.
		if ( ! isset( $source_properties['get_value_callback'] ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'The $source_properties must contain a "get_value_callback".' ),
				'6.5.0'
			);
			return false;
		}

		// Validates that the get_value_callback is a valid callback.
		if ( ! is_callable( $source_properties['get_value_callback'] ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'The "get_value_callback" parameter must be a valid callback.' ),
				'6.5.0'
			);
			return false;
		}

		// Validates that the uses_context parameter is an array.
		if ( isset( $source_properties['uses_context'] ) && ! is_array( $source_properties['uses_context'] ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'The "uses_context" parameter must be an array.' ),
				'6.5.0'
			);
			return false;
		}

		if ( ! empty( array_diff( array_keys( $source_properties ), $this->allowed_source_properties ) ) ) {
			_doing_it_wrong(
				__METHOD__,
				__( 'The $source_properties array contains invalid properties.' ),
				'6.5.0'
			);
			return false;
		}

		$source = new WP_Block_Bindings_Source(
			$source_name,
			$source_properties
		);

		$this->sources[ $source_name ] = $source;

		// Adds `uses_context` defined by block bindings sources.
		add_filter(
			'get_block_type_uses_context',
			function ( $uses_context, $block_type ) use ( $source ) {
				if ( ! in_array( $block_type->name, $this->supported_blocks, true ) || empty( $source->uses_context ) ) {
					return $uses_context;
				}
				// Use array_values to reset the array keys.
				return array_values( array_unique( array_merge( $uses_context, $source->uses_context ) ) );
			},
			10,
			2
		);

		return $source;
	}

	/**
	 * Unregisters a block bindings source.
	 *
	 * @since 6.5.0
	 *
	 * @param string $source_name Block bindings source name including namespace.
	 * @return WP_Block_Bindings_Source|false The unregistered block bindings source on success and `false` otherwise.
	 */
	public function unregister( string $source_name ) {
		if ( ! $this->is_registered( $source_name ) ) {
			_doing_it_wrong(
				__METHOD__,
				/* translators: %s: Block bindings source name. */
				sprintf( __( 'Block binding "%s" not found.' ), $source_name ),
				'6.5.0'
			);
			return false;
		}

		$unregistered_source = $this->sources[ $source_name ];
		unset( $this->sources[ $source_name ] );

		return $unregistered_source;
	}

	/**
	 * Retrieves the list of all registered block bindings sources.
	 *
	 * @since 6.5.0
	 *
	 * @return WP_Block_Bindings_Source[] The array of registered sources.
	 */
	public function get_all_registered() {
		return $this->sources;
	}

	/**
	 * Retrieves a registered block bindings source.
	 *
	 * @since 6.5.0
	 *
	 * @param string $source_name The name of the source.
	 * @return WP_Block_Bindings_Source|null The registered block bindings source, or `null` if it is not registered.
	 */
	public function get_registered( string $source_name ) {
		if ( ! $this->is_registered( $source_name ) ) {
			return null;
		}

		return $this->sources[ $source_name ];
	}

	/**
	 * Checks if a block bindings source is registered.
	 *
	 * @since 6.5.0
	 *
	 * @param string $source_name The name of the source.
	 * @return bool `true` if the block bindings source is registered, `false` otherwise.
	 */
	public function is_registered( $source_name ) {
		return isset( $this->sources[ $source_name ] );
	}

	/**
	 * Wakeup magic method.
	 *
	 * @since 6.5.0
	 */
	public function __wakeup() {
		if ( ! $this->sources ) {
			return;
		}
		if ( ! is_array( $this->sources ) ) {
			throw new UnexpectedValueException();
		}
		foreach ( $this->sources as $value ) {
			if ( ! $value instanceof WP_Block_Bindings_Source ) {
				throw new UnexpectedValueException();
			}
		}
	}

	/**
	 * Utility method to retrieve the main instance of the class.
	 *
	 * The instance will be created if it does not exist yet.
	 *
	 * @since 6.5.0
	 *
	 * @return WP_Block_Bindings_Registry The main instance.
	 */
	public static function get_instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}
}

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