gutenberg / lib / experimental / disable-tinymce.php

disable-tinymce.php in Gutenberg 22.3.0, at lib/experimental/disable-tinymce.php

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1	<?php
2	/**
3	* Experiment to disable TinyMCE and the Classic block.
4	*
5	* @package gutenberg
6	*/
7
8	// add_action( 'admin_footer', 'gutenberg_test_tinymce_access' ); // Uncomment the following line to force an external TinyMCE usage.
9
10	/**
11	* Render a variable that we'll use to declare that the editor will need the classic block.
12	*/
13	function gutenberg_declare_classic_block_necessary() {
14	if ( ! gutenberg_post_being_edited_requires_classic_block() ) {
15	return;
16	}
17	echo '<script type="text/javascript">window.wp.needsClassicBlock = true;</script>';
18	}
19	add_action( 'admin_print_footer_scripts', 'gutenberg_declare_classic_block_necessary', 20 );
20
21	// If user has already requested TinyMCE, we're ending the experiment.
22	if ( ! empty( $_GET['requiresTinymce'] ) \|\| gutenberg_post_being_edited_requires_classic_block() ) {
23	return;
24	}
25
26
27	/**
28	* Disable TinyMCE by introducing a placeholder `_WP_Editors` class.
29	*/
30	function gutenberg_disable_tinymce() {
31	require __DIR__ . '/class--wp-editors.php';
32	}
33
34	add_action( 'admin_init', 'gutenberg_disable_tinymce' );
35
36	/**
37	* Enqueue TinyMCE proxy script.
38	* Detects TinyMCE usage and sets the `requiresTinymce` query argument to stop disabling TinyMCE loading.
39	*/
40	function gutenberg_enqueue_tinymce_proxy() {
41	wp_enqueue_script( 'gutenberg-tinymce-proxy', plugins_url( 'assets/tinymce-proxy.js', __FILE__ ) );
42	}
43
44	add_action( 'admin_enqueue_scripts', 'gutenberg_enqueue_tinymce_proxy' );
45
46	/**
47	* Dequeue the `mce-view` script as it was only necessary for the Classic block.
48	*/
49	function gutenberg_wp_enqueue_media() {
50	wp_dequeue_script( 'mce-view' );
51	}
52
53	add_action( 'wp_enqueue_media', 'gutenberg_wp_enqueue_media' );
54
55	/**
56	* Example TinyMCE usage used for testing.
57	* Uncomment line 8 in this file to enable.
58	*/
59	function gutenberg_test_tinymce_access() {
60	echo '<script type="text/javascript">const a = window.tinymce.$;</script>';
61	}
62
63	/**
64	* Whether the current editor contains a classic block instance.
65	*
66	* @return bool True if the editor contains a classic block, false otherwise.
67	*/
68	function gutenberg_post_being_edited_requires_classic_block() {
69	if ( ! is_admin() ) {
70	return false;
71	}
72
73	// Continue only if we're in the post editor.
74	if ( empty( $_GET['post'] ) \|\| empty( $_GET['action'] ) \|\| 'edit' !== $_GET['action'] ) {
75	return false;
76	}
77
78	// Bail if for some reason the post isn't found.
79	$current_post = get_post( absint( $_GET['post'] ) );
80	if ( ! $current_post ) {
81	return false;
82	}
83
84	// Check if block editor is disabled by "Classic Editor" or another plugin.
85	if (
86	function_exists( 'use_block_editor_for_post_type' ) &&
87	! use_block_editor_for_post_type( $current_post->post_type )
88	) {
89	return true;
90	}
91
92	$content = $current_post->post_content;
93	if ( empty( $content ) ) {
94	return false;
95	}
96
97	$parsed_blocks = parse_blocks( $content );
98	foreach ( $parsed_blocks as $block ) {
99	$is_freeform_block = empty( $block['blockName'] ) \|\| 'core/freeform' === $block['blockName'];
100	if ( $is_freeform_block && strlen( trim( $block['innerHTML'] ) ) > 0 ) {
101	return true;
102	}
103	}
104
105	return false;
106	}
107