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<?php
namespace Automattic\WooCommerce\Internal\Utilities;
/**
* Helper functions for working with blocks.
*/
class BlocksUtil {
/**
* Return blocks with their inner blocks flattened.
*
* @param array $blocks Array of blocks as returned by parse_blocks().
* @return array All blocks.
*/
public static function flatten_blocks( $blocks ) {
return array_reduce(
$blocks,
function( $carry, $block ) {
array_push( $carry, array_diff_key( $block, array_flip( array( 'innerBlocks' ) ) ) );
if ( isset( $block['innerBlocks'] ) ) {
$inner_blocks = self::flatten_blocks( $block['innerBlocks'] );
return array_merge( $carry, $inner_blocks );
}
return $carry;
},
array()
);
}
/**
* Get all instances of the specified block from the widget area.
*
* @param array $block_name The name (id) of a block, e.g. `woocommerce/mini-cart`.
* @return array Array of blocks as returned by parse_blocks().
*/
public static function get_blocks_from_widget_area( $block_name ) {
return array_reduce(
get_option( 'widget_block' ),
function ( $acc, $block ) use ( $block_name ) {
$parsed_blocks = ! empty( $block ) && is_array( $block ) ? parse_blocks( $block['content'] ) : array();
if ( ! empty( $parsed_blocks ) && $block_name === $parsed_blocks[0]['blockName'] ) {
array_push( $acc, $parsed_blocks[0] );
return $acc;
}
return $acc;
},
array()
);
}
/**
* Get all instances of the specified block on a specific template part.
*
* @param string $block_name The name (id) of a block, e.g. `woocommerce/mini-cart`.
* @param string $template_part_slug The woo page to search, e.g. `header`.
* @return array Array of blocks as returned by parse_blocks().
*/
public static function get_block_from_template_part( $block_name, $template_part_slug ) {
$template = get_block_template( get_stylesheet() . '//' . $template_part_slug, 'wp_template_part' );
$blocks = parse_blocks( $template->content );
$flatten_blocks = self::flatten_blocks( $blocks );
return array_values(
array_filter(
$flatten_blocks,
function ( $block ) use ( $block_name ) {
return ( $block_name === $block['blockName'] );
}
)
);
}
}
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