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Block Hooks: Extract insert_hooked_blocks() function #5609

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Block Hooks: Extract insert_hooked_blocks() function #5609

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b68aeac
Block Hooks: Extract insert_hooked_blocks() function
ockham Nov 1, 2023
a258a01
Remove obsolete block argument
ockham Nov 1, 2023
09bff63
Change argument order
ockham Nov 14, 2023
19ff5d5
Add PHPDoc
ockham Nov 28, 2023
0b0f7cb
Add basic test coverage for insert_hooked_blocks
ockham Nov 28, 2023
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99 changes: 43 additions & 56 deletions src/wp-includes/blocks.php
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Original file line number Diff line number Diff line change
Expand Up @@ -757,6 +757,45 @@ function get_hooked_blocks() {
return $hooked_blocks;
}

/**
* Returns the markup for blocks hooked to the given anchor block in a specific relative position.
*
* @since 6.5.0
*
* @param array $anchor_block The anchor block.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param array $hooked_blocks An array of blocks hooked to the given anchor block.
* @param WP_Block_Template|array $context The block template, template part, or pattern that the anchor block belongs to.
* @return string
*/
function insert_hooked_blocks( &$anchor_block, $relative_position, $hooked_blocks, $context ) {
$anchor_block_type = $anchor_block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();

/**
* Filters the list of hooked block types for a given anchor block type and relative position.
*
* @since 6.4.0
*
* @param string[] $hooked_block_types The list of hooked block types.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param string $anchor_block_type The anchor block type.
* @param WP_Block_Template|array $context The block template, template part, or pattern that the anchor block belongs to.
*/
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );

$markup = '';
foreach ( $hooked_block_types as $hooked_block_type ) {
$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
}

return $markup;
}

/**
* Returns a function that injects the theme attribute into, and hooked blocks before, a given block.
*
Expand Down Expand Up @@ -794,40 +833,10 @@ function make_before_block_visitor( $hooked_blocks, $context ) {

if ( $parent_block && ! $prev ) {
// Candidate for first-child insertion.
$relative_position = 'first_child';
$anchor_block_type = $parent_block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();

/**
* Filters the list of hooked block types for a given anchor block type and relative position.
*
* @since 6.4.0
*
* @param string[] $hooked_block_types The list of hooked block types.
* @param string $relative_position The relative position of the hooked blocks.
* Can be one of 'before', 'after', 'first_child', or 'last_child'.
* @param string $anchor_block_type The anchor block type.
* @param WP_Block_Template|array $context The block template, template part, or pattern that the anchor block belongs to.
*/
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
foreach ( $hooked_block_types as $hooked_block_type ) {
$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
}
$markup .= insert_hooked_blocks( $parent_block, 'first_child', $hooked_blocks, $context );
}

$relative_position = 'before';
$anchor_block_type = $block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();

/** This filter is documented in wp-includes/blocks.php */
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
foreach ( $hooked_block_types as $hooked_block_type ) {
$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
}
$markup .= insert_hooked_blocks( $block, 'before', $hooked_blocks, $context );

return $markup;
};
Expand Down Expand Up @@ -863,33 +872,11 @@ function make_after_block_visitor( $hooked_blocks, $context ) {
* @return string The serialized markup for the given block, with the markup for any hooked blocks appended to it.
*/
return function ( &$block, &$parent_block = null, $next = null ) use ( $hooked_blocks, $context ) {
$markup = '';

$relative_position = 'after';
$anchor_block_type = $block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();

/** This filter is documented in wp-includes/blocks.php */
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
foreach ( $hooked_block_types as $hooked_block_type ) {
$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
}
$markup = insert_hooked_blocks( $block, 'after', $hooked_blocks, $context );

if ( $parent_block && ! $next ) {
// Candidate for last-child insertion.
$relative_position = 'last_child';
$anchor_block_type = $parent_block['blockName'];
$hooked_block_types = isset( $hooked_blocks[ $anchor_block_type ][ $relative_position ] )
? $hooked_blocks[ $anchor_block_type ][ $relative_position ]
: array();

/** This filter is documented in wp-includes/blocks.php */
$hooked_block_types = apply_filters( 'hooked_block_types', $hooked_block_types, $relative_position, $anchor_block_type, $context );
foreach ( $hooked_block_types as $hooked_block_type ) {
$markup .= get_comment_delimited_block_content( $hooked_block_type, array(), '' );
}
$markup .= insert_hooked_blocks( $parent_block, 'last_child', $hooked_blocks, $context );
}

return $markup;
Expand Down
34 changes: 34 additions & 0 deletions tests/phpunit/tests/blocks/insertHookedBlocks.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
<?php
/**
* Tests for the insert_hooked_blocks function.
*
* @package WordPress
* @subpackage Blocks
*
* @since 6.5.0
*
* @group blocks
* @group block-hooks
*/
class Tests_Blocks_InsertHookedBlocks extends WP_UnitTestCase {
/**
* @covers ::insert_hooked_blocks
*/
public function test_insert_hooked_blocks() {
$anchor_block_name = 'tests/anchor-block';
$anchor_block = array(
'blockName' => $anchor_block_name,
);

// Maybe move to class level and include other relative positions?
// And/or data provider?
$hooked_blocks = array(
$anchor_block_name => array(
'after' => array( 'tests/hooked-before' ),
)
);

$actual = insert_hooked_blocks( $anchor_block, 'after', $hooked_blocks, array() );
$this->assertSame( '<!-- wp:tests/hooked-before /-->', $actual );
}
}