tinymce-filters.md

TinyMCE Filters

Covers the following filters:

• mce_buttons
• mce_buttons_2
• mce_buttons_3
• mce_buttons_4
• tiny_mce_before_init
• tiny_mce_plugins
• tiny_mce_external_plugins

Overview

A variety of filters (listed above) run in the Classic Editor prior to TinyMCE initialization. These filters permit customization of the TinyMCE instance.

Examples

One existing use is the Hawaiian Characters plugin which registers custom characters via the charmap_append setting:

/**
 * add new characters to end of charmap
 */
function hc_tinymce_init( $settings ) {
	$new_chars = json_encode( array(
		array( '0256', 'A - kahako' ),
		array( '0257', 'a - kahako' ),
		array( '0274', 'E - kahako' ),
		array( '0275', 'e - kahako' ),
		array( '0298', 'I - kahako' ),
		array( '0299', 'i - kahako' ),
		array( '0332', 'O - kahako' ),
		array( '0333', 'o - kahako' ),
		array( '0362', 'U - kahako' ),
		array( '0363', 'u - kahako' ),
		array( '0699', 'okina' ),
	) );
	$settings['charmap_append'] = $new_chars;

	return $settings;
}

Please open a new issue to suggest additional examples of existing usage.

Gutenberg Equivalent

All of the listed filters also run when TinyMCE is initialized for Gutenberg.