gutenberg / lib / global-styles.php

global-styles.php in Gutenberg 12.8.1, at lib/global-styles.php

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1	<?php
2	/**
3	* Bootstraps Global Styles.
4	*
5	* @package gutenberg
6	*/
7
8	/**
9	* Sanitizes global styles user content removing unsafe rules.
10	*
11	* @param string $content Post content to filter.
12	* @return string Filtered post content with unsafe rules removed.
13	*/
14	function gutenberg_global_styles_filter_post( $content ) {
15	$decoded_data = json_decode( wp_unslash( $content ), true );
16	$json_decoding_error = json_last_error();
17	if (
18	JSON_ERROR_NONE === $json_decoding_error &&
19	is_array( $decoded_data ) &&
20	isset( $decoded_data['isGlobalStylesUserThemeJSON'] ) &&
21	$decoded_data['isGlobalStylesUserThemeJSON']
22	) {
23	unset( $decoded_data['isGlobalStylesUserThemeJSON'] );
24
25	$data_to_encode = WP_Theme_JSON_Gutenberg::remove_insecure_properties( $decoded_data );
26
27	$data_to_encode['isGlobalStylesUserThemeJSON'] = true;
28	return wp_slash( wp_json_encode( $data_to_encode ) );
29	}
30	return $content;
31	}
32
33	/**
34	* Adds the filters to filter global styles user theme.json.
35	*/
36	function gutenberg_global_styles_kses_init_filters() {
37	// Global Styles filters should be executed before normal post_kses HTML filters which has the default priority of 10.
38	add_filter( 'content_save_pre', 'gutenberg_global_styles_filter_post', 9 );
39	}
40
41	/**
42	* Removes the filters to filter global styles user theme.json.
43	*/
44	function gutenberg_global_styles_kses_remove_filters() {
45	remove_filter( 'content_save_pre', 'gutenberg_global_styles_filter_post', 9 );
46	}
47
48	/**
49	* Register global styles kses filters if the user does not have unfiltered_html capability.
50	*
51	* @uses render_block_core_navigation()
52	* @throws WP_Error An WP_Error exception parsing the block definition.
53	*/
54	function gutenberg_global_styles_kses_init() {
55	gutenberg_global_styles_kses_remove_filters();
56	if ( ! current_user_can( 'unfiltered_html' ) ) {
57	gutenberg_global_styles_kses_init_filters();
58	}
59	}
60
61	/**
62	* This filter is the last being executed on force_filtered_html_on_import.
63	* If the input of the filter is true it means we are in an import situation and should
64	* enable kses, independently of the user capabilities.
65	* So in that case we call gutenberg_global_styles_kses_init_filters;
66	*
67	* @param string $arg Input argument of the filter.
68	* @return string Exactly what was passed as argument.
69	*/
70	function gutenberg_global_styles_force_filtered_html_on_import_filter( $arg ) {
71	// force_filtered_html_on_import is true we need to init the global styles kses filters.
72	if ( $arg ) {
73	gutenberg_global_styles_kses_init_filters();
74	}
75	return $arg;
76	}
77
78	// kses actions&filters.
79	add_action( 'init', 'gutenberg_global_styles_kses_init' );
80	add_action( 'set_current_user', 'gutenberg_global_styles_kses_init' );
81	add_filter( 'force_filtered_html_on_import', 'gutenberg_global_styles_force_filtered_html_on_import_filter', 999 );
82	// This filter needs to be executed last.
83