class-wp-theme-json-schema-gutenberg.php in Gutenberg 23.2.0, at lib/class-wp-theme-json-schema-gutenberg.php

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1	<?php
2	/**
3	* WP_Theme_JSON_Schema_Gutenberg class
4	*
5	* @package gutenberg
6	* @since 5.9.0
7	*/
8
9	if ( class_exists( 'WP_Theme_JSON_Schema_Gutenberg' ) ) {
10	return;
11	}
12
13	/**
14	* Class that migrates a given theme.json structure to the latest schema.
15	*
16	* This class is for internal core usage and is not supposed to be used by extenders (plugins and/or themes).
17	* This is a low-level API that may need to do breaking changes. Please,
18	* use get_global_settings, get_global_styles, and get_global_stylesheet instead.
19	*
20	* @since 5.9.0
21	* @access private
22	*/
23	#[AllowDynamicProperties]
24	class WP_Theme_JSON_Schema_Gutenberg {
25
26	/**
27	* Maps old properties to their new location within the schema's settings.
28	* This will be applied at both the defaults and individual block levels.
29	*/
30	const V1_TO_V2_RENAMED_PATHS = array(
31	'border.customRadius' => 'border.radius',
32	'spacing.customMargin' => 'spacing.margin',
33	'spacing.customPadding' => 'spacing.padding',
34	'typography.customLineHeight' => 'typography.lineHeight',
35	);
36
37	/**
38	* Function that migrates a given theme.json structure to the last version.
39	*
40	* @since 5.9.0
41	* @since 6.6.0 Migrate up to v3.
42	*
43	* @param array $theme_json The structure to migrate.
44	* @param string $origin Optional. What source of data this object represents.
45	* One of 'blocks', 'default', 'theme', or 'custom'. Default 'theme'.
46	*
47	* @return array The structure in the last version.
48	*/
49	public static function migrate( $theme_json, $origin = 'theme' ) {
50	if ( ! isset( $theme_json['version'] ) ) {
51	$theme_json = array(
52	'version' => WP_Theme_JSON_Gutenberg::LATEST_SCHEMA,
53	);
54	}
55
56	// Migrate each version in order starting with the current version.
57	switch ( $theme_json['version'] ) {
58	case 1:
59	$theme_json = self::migrate_v1_to_v2( $theme_json );
60	// Deliberate fall through. Once migrated to v2, also migrate to v3.
61	case 2:
62	$theme_json = self::migrate_v2_to_v3( $theme_json, $origin );
63	}
64
65	return $theme_json;
66	}
67
68	/**
69	* Removes the custom prefixes for a few properties
70	* that were part of v1:
71	*
72	* 'border.customRadius' => 'border.radius',
73	* 'spacing.customMargin' => 'spacing.margin',
74	* 'spacing.customPadding' => 'spacing.padding',
75	* 'typography.customLineHeight' => 'typography.lineHeight',
76	*
77	* @since 5.9.0
78	*
79	* @param array $old Data to migrate.
80	*
81	* @return array Data without the custom prefixes.
82	*/
83	private static function migrate_v1_to_v2( $old ) {
84	// Copy everything.
85	$new = $old;
86
87	// Overwrite the things that changed.
88	if ( isset( $old['settings'] ) ) {
89	$new['settings'] = self::rename_paths( $old['settings'], self::V1_TO_V2_RENAMED_PATHS );
90	}
91
92	// Set the new version.
93	$new['version'] = 2;
94
95	return $new;
96	}
97
98	/**
99	* Migrates from v2 to v3.
100	*
101	* - Sets settings.typography.defaultFontSizes to false if settings.typography.fontSizes are defined.
102	* - Sets settings.spacing.defaultSpacingSizes to false if settings.spacing.spacingSizes are defined.
103	* - Prevents settings.spacing.spacingSizes from merging with settings.spacing.spacingScale by
104	* unsetting spacingScale when spacingSizes are defined.
105	*
106	* @since 6.6.0
107	*
108	* @param array $old Data to migrate.
109	* @param string $origin What source of data this object represents.
110	* One of 'blocks', 'default', 'theme', or 'custom'.
111	* @return array Data with defaultFontSizes set to false.
112	*/
113	private static function migrate_v2_to_v3( $old, $origin ) {
114	// Copy everything.
115	$new = $old;
116
117	// Set the new version.
118	$new['version'] = 3;
119
120	/*
121	* Remaining changes do not need to be applied to the custom origin,
122	* as they should take on the value of the theme origin.
123	*/
124	if ( 'custom' === $origin ) {
125	return $new;
126	}
127
128	/*
129	* Even though defaultFontSizes is a new setting, we need to migrate
130	* it as it controls the PRESETS_METADATA prevent_override which was
131	* previously hardcoded to false. This only needs to happen when the
132	* theme provided font sizes as they could match the default ones and
133	* affect the generated CSS. And in v2 we provided default font sizes
134	* when the theme did not provide any.
135	*/
136	if ( isset( $old['settings']['typography']['fontSizes'] ) ) {
137	$new['settings']['typography']['defaultFontSizes'] = false;
138	}
139
140	/*
141	* Similarly to defaultFontSizes, we need to migrate defaultSpacingSizes
142	* as it controls the PRESETS_METADATA prevent_override which was
143	* previously hardcoded to false. This only needs to happen when the
144	* theme provided spacing sizes via spacingSizes or spacingScale.
145	*/
146	if (
147	isset( $old['settings']['spacing']['spacingSizes'] ) \|\|
148	isset( $old['settings']['spacing']['spacingScale'] )
149	) {
150	$new['settings']['spacing']['defaultSpacingSizes'] = false;
151	}
152
153	/*
154	* In v3 spacingSizes is merged with the generated spacingScale sizes
155	* instead of completely replacing them. The v3 behavior is what was
156	* documented for the v2 schema, but the code never actually did work
157	* that way. Instead of surprising users with a behavior change two
158	* years after the fact at the same time as a v3 update is introduced,
159	* we'll continue using the "bugged" behavior for v2 themes. And treat
160	* the "bug fix" as a breaking change for v3.
161	*/
162	if ( isset( $old['settings']['spacing']['spacingSizes'] ) ) {
163	unset( $new['settings']['spacing']['spacingScale'] );
164	}
165
166	return $new;
167	}
168
169	/**
170	* Processes the settings subtree.
171	*
172	* @since 5.9.0
173	*
174	* @param array $settings Array to process.
175	* @param array $paths_to_rename Paths to rename.
176	*
177	* @return array The settings in the new format.
178	*/
179	private static function rename_paths( $settings, $paths_to_rename ) {
180	$new_settings = $settings;
181
182	// Process any renamed/moved paths within default settings.
183	self::rename_settings( $new_settings, $paths_to_rename );
184
185	// Process individual block settings.
186	if ( isset( $new_settings['blocks'] ) && is_array( $new_settings['blocks'] ) ) {
187	foreach ( $new_settings['blocks'] as &$block_settings ) {
188	self::rename_settings( $block_settings, $paths_to_rename );
189	}
190	}
191
192	return $new_settings;
193	}
194
195	/**
196	* Processes a settings array, renaming or moving properties.
197	*
198	* @since 5.9.0
199	*
200	* @param array $settings Reference to settings either defaults or an individual block's.
201	* @param array $paths_to_rename Paths to rename.
202	*/
203	private static function rename_settings( &$settings, $paths_to_rename ) {
204	foreach ( $paths_to_rename as $original => $renamed ) {
205	$original_path = explode( '.', $original );
206	$renamed_path = explode( '.', $renamed );
207	$current_value = _wp_array_get( $settings, $original_path, null );
208
209	if ( null !== $current_value ) {
210	_wp_array_set( $settings, $renamed_path, $current_value );
211	self::unset_setting_by_path( $settings, $original_path );
212	}
213	}
214	}
215
216	/**
217	* Removes a property from within the provided settings by its path.
218	*
219	* @since 5.9.0
220	*
221	* @param array $settings Reference to the current settings array.
222	* @param array $path Path to the property to be removed.
223	*/
224	private static function unset_setting_by_path( &$settings, $path ) {
225	$tmp_settings = &$settings; // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
226	$last_key = array_pop( $path );
227	foreach ( $path as $key ) {
228	$tmp_settings = &$tmp_settings[ $key ];
229	}
230
231	unset( $tmp_settings[ $last_key ] );
232	}
233	}
234