canvasContextualizeLinks.user.js

// ==UserScript==
// @name         Canvas TinyMCE Update Contextual Links
// @namespace    https://github.com/tidusx18
// @version      0.0.1
// @match        https://fiu.instructure.com/*/pages/*/edit
// @grant        none
// @noframes     true
// ==/UserScript==

(function() {
	'use strict';

	function contexualizeLinks() {
		window.addEventListener('load', function(event) {
			tinymce.on('AddEditor', function(e) {
				e.editor.on('init', function(editor) {
					// setTimeout( function() {

						// console.log(tinymce.activeEditor);

						let listItems = tinymce.activeEditor.dom.select('li');

						for(let item of listItems) {

							let a = tinymce.activeEditor.dom.select('a', item)[0];
							// console.log(a);

							if(item.innerText.includes('http')) {

								// console.log(item.innerText);
								let itemContent = item.innerText.replace(/ +-\Whttp.+$/ig, '');
								// console.log(itemContent);

								tinymce.activeEditor.dom.setHTML(a, itemContent);
								tinymce.activeEditor.dom.setHTML(item, tinymce.DOM.getOuterHTML(a));
							}
						}

					// }, 2000 );
				});
			});
		});
	}

	try {
		contexualizeLinks();
	} catch(err) {
		console.log('TinyMCE is not defined on this page.');
	}

})();