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<?php
/**
* Align block support flag.
*
* @package WordPress
* @since 5.6.0
*/
/**
* Registers the align block attribute for block types that support it.
*
* @since 5.6.0
* @access private
*
* @param WP_Block_Type $block_type Block Type.
*/
function wp_register_alignment_support( $block_type ) {
$has_align_support = block_has_support( $block_type, 'align', false );
if ( $has_align_support ) {
if ( ! $block_type->attributes ) {
$block_type->attributes = array();
}
if ( ! array_key_exists( 'align', $block_type->attributes ) ) {
$block_type->attributes['align'] = array(
'type' => 'string',
'enum' => array( 'left', 'center', 'right', 'wide', 'full', '' ),
);
}
}
}
/**
* Adds CSS classes for block alignment to the incoming attributes array.
* This will be applied to the block markup in the front-end.
*
* @since 5.6.0
* @access private
*
* @param WP_Block_Type $block_type Block Type.
* @param array $block_attributes Block attributes.
* @return array Block alignment CSS classes and inline styles.
*/
function wp_apply_alignment_support( $block_type, $block_attributes ) {
$attributes = array();
$has_align_support = block_has_support( $block_type, 'align', false );
if ( $has_align_support ) {
$has_block_alignment = array_key_exists( 'align', $block_attributes );
if ( $has_block_alignment ) {
$attributes['class'] = sprintf( 'align%s', $block_attributes['align'] );
}
}
return $attributes;
}
// Register the block support.
WP_Block_Supports::get_instance()->register(
'align',
array(
'register_attribute' => 'wp_register_alignment_support',
'apply' => 'wp_apply_alignment_support',
)
);