<?php

/**

 * Dimensions block support flag.

 *

 * This does not include the `spacing` block support even though that visually

 * appears under the "Dimensions" panel in the editor. It remains in its

 * original `spacing.php` file for compatibility with core.

 *

 * @package WordPress

 * @since 5.9.0

 */

/**

 * Registers the style block attribute for block types that support it.

 *

 * @since 5.9.0

 * @access private

 *

 * @param WP_Block_Type $block_type Block Type.

 */

function wp_register_dimensions_support( $block_type ) {

	// Setup attributes and styles within that if needed.

	if ( ! $block_type->attributes ) {

		$block_type->attributes = array();

	}

	// Check for existing style attribute definition e.g. from block.json.

	if ( array_key_exists( 'style', $block_type->attributes ) ) {

		return;

	}

	$has_dimensions_support = block_has_support( $block_type, array( '__experimentalDimensions' ), false );

	// Future block supports such as height & width will be added here.

	if ( $has_dimensions_support ) {

		$block_type->attributes['style'] = array(

			'type' => 'object',

		);

	}

}

/**

 * Adds CSS classes for block dimensions to the incoming attributes array.

 * This will be applied to the block markup in the front-end.

 *

 * @since 5.9.0

 * @access private

 *

 * @param WP_Block_Type $block_type       Block Type.

 * @param array         $block_attributes Block attributes.

 * @return array Block dimensions CSS classes and inline styles.

 */

function wp_apply_dimensions_support( $block_type, $block_attributes ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable

	if ( wp_should_skip_block_supports_serialization( $block_type, '__experimentalDimensions' ) ) {

		return array();

	}

	$styles = array();

	// Height support to be added in near future.

	// Width support to be added in near future.

	return empty( $styles ) ? array() : array( 'style' => implode( ' ', $styles ) );

}

// Register the block support.

WP_Block_Supports::get_instance()->register(

	'dimensions',

	array(

		'register_attribute' => 'wp_register_dimensions_support',

		'apply'              => 'wp_apply_dimensions_support',

	)

);