Elgg-Lorea-Hydra/mod/extended_tinymce/views/default/extended_tinymce/init.php

<?php
/**
 * Initialize the TinyMCE script
 */

echo elgg_view('input/hidden', array('name' => 'extendedtinymcelang', 'value' => extended_tinymce_get_user_language()));

if (elgg_in_context('activity') || elgg_in_context('ajax')) {
	$inline_code = <<<___JS
<script>
	require(['jquery', 'elgg', 'extended_tinymce'], function($) {

		var tinymceLanguage = $('input:hidden[name=extendedtinymcelang]').val();

		$(".elgg-input-longtext").tinymce({
			script_url : elgg.config.wwwroot + '/mod/extended_tinymce/vendor/tinymce/js/tinymce/tinymce.min.js',
			selector: ".elgg-input-longtext",
			theme: "modern",
			skin : "lightgray",
			language : tinymceLanguage,
			relative_urls : false,
			remove_script_host : false,
			document_base_url : elgg.config.wwwroot,
			plugins: "advlist autolink autoresize charmap code colorpicker emoticons fullscreen hr image insertdatetime link lists paste preview print searchreplace table textcolor textpattern wordcount",
			menubar: false,
			toolbar_items_size: "small",
			toolbar: [
				"newdocument preview fullscreen print | searchreplace | styleselect | fontselect | fontsizeselect",
				"undo redo | bullist numlist | outdent indent | bold italic underline | alignleft aligncenter alignright alignjustify | removeformat",
				"pastetext | insertdatetime | charmap | hr | table | forecolor backcolor | link unlink | image | emoticons | blockquote" + (elgg.is_admin_logged_in() ? " | code" : "")
			],
			browser_spellcheck : true,
			image_advtab: true,
			paste_data_images: false,
			autoresize_min_height: 200,
			autoresize_max_height: 450,
			insertdate_formats: ["%I:%M:%S %p", "%H:%M:%S", "%Y-%m-%d", "%d.%m.%Y"],
			content_css: elgg.config.wwwroot + 'mod/extended_tinymce/css/elgg_extended_tinymce.css',
			setup : function(e) {
				e.on('change', function(e) { tinymce.triggerSave(); });
			}
		});
	});
</script>
___JS;

	echo $inline_code;
} else {
	elgg_require_js('jquery');
	elgg_require_js('elgg');
	elgg_require_js('extended_tinymce');
	elgg_require_js('elgg/extended_tinymce_init');
}