1<?php
2/**
3 * Spacing block support flag.
4 *
5 * For backwards compatibility, this remains separate to the dimensions.php
6 * block support despite both belonging under a single panel in the editor.
7 *
8 * @package WordPress
9 * @since 5.8.0
10 */
11
12/**
13 * Registers the style block attribute for block types that support it.
14 *
15 * @since 5.8.0
16 * @access private
17 *
18 * @param WP_Block_Type $block_type Block Type.
19 */
20function wp_register_spacing_support( $block_type ) {
21 $has_spacing_support = block_has_support( $block_type, 'spacing', false );
22
23 // Setup attributes and styles within that if needed.
24 if ( ! $block_type->attributes ) {
25 $block_type->attributes = array();
26 }
27
28 if ( $has_spacing_support && ! array_key_exists( 'style', $block_type->attributes ) ) {
29 $block_type->attributes['style'] = array(
30 'type' => 'object',
31 );
32 }
33}
34
35/**
36 * Adds CSS classes for block spacing to the incoming attributes array.
37 * This will be applied to the block markup in the front-end.
38 *
39 * @since 5.8.0
40 * @since 6.1.0 Implemented the style engine to generate CSS and classnames.
41 * @access private
42 *
43 * @param WP_Block_Type $block_type Block Type.
44 * @param array $block_attributes Block attributes.
45 * @return array Block spacing CSS classes and inline styles.
46 */
47function wp_apply_spacing_support( $block_type, $block_attributes ) {
48 if ( wp_should_skip_block_supports_serialization( $block_type, 'spacing' ) ) {
49 return array();
50 }
51
52 $attributes = array();
53 $has_padding_support = block_has_support( $block_type, array( 'spacing', 'padding' ), false );
54 $has_margin_support = block_has_support( $block_type, array( 'spacing', 'margin' ), false );
55 $block_styles = isset( $block_attributes['style'] ) ? $block_attributes['style'] : null;
56
57 if ( ! $block_styles ) {
58 return $attributes;
59 }
60
61 $skip_padding = wp_should_skip_block_supports_serialization( $block_type, 'spacing', 'padding' );
62 $skip_margin = wp_should_skip_block_supports_serialization( $block_type, 'spacing', 'margin' );
63 $spacing_block_styles = array(
64 'padding' => null,
65 'margin' => null,
66 );
67 if ( $has_padding_support && ! $skip_padding ) {
68 $spacing_block_styles['padding'] = isset( $block_styles['spacing']['padding'] ) ? $block_styles['spacing']['padding'] : null;
69 }
70 if ( $has_margin_support && ! $skip_margin ) {
71 $spacing_block_styles['margin'] = isset( $block_styles['spacing']['margin'] ) ? $block_styles['spacing']['margin'] : null;
72 }
73 $styles = wp_style_engine_get_styles( array( 'spacing' => $spacing_block_styles ) );
74
75 if ( ! empty( $styles['css'] ) ) {
76 $attributes['style'] = $styles['css'];
77 }
78
79 return $attributes;
80}
81
82// Register the block support.
83WP_Block_Supports::get_instance()->register(
84 'spacing',
85 array(
86 'register_attribute' => 'wp_register_spacing_support',
87 'apply' => 'wp_apply_spacing_support',
88 )
89);
90