[ticket/13713] Move function to get textarea element to core.js

PHPBB3-13713

phpBB/assets/javascript/core.js

@@ -1745,6 +1745,31 @@ phpbb.lazyLoadAvatars = function loadAvatars() {
 	});
 };
 
+/**
+ * Get editor text area element
+ *
+ * @param {string} formName Name of form
+ * @param {string} textareaName Textarea name
+ *
+ * @return {HTMLElement|null} Text area element or null if textarea couldn't be found
+ */
+phpbb.getEditorTextArea = function(formName, textareaName) {
+	let doc;
+
+	// find textarea, make sure browser supports necessary functions
+	if (document.forms[formName]) {
+		doc = document;
+	} else {
+		doc = opener.document;
+	}
+
+	if (!doc.forms[formName]) {
+		return;
+	}
+
+	return doc.forms[formName].elements[textareaName];
+}
+
 phpbb.recaptcha = {
 	button: null,
 	ready: false,

phpBB/assets/javascript/editor.js

@@ -384,33 +384,11 @@ function getCaretPosition(txtarea) {
 	return caretPos;
 }
 
-/**
- * Get editor text area element
- *
- * @return {HTMLElement|null} Text area element or null if textarea couldn't be found
- */
-function getEditorTextArea() {
-	let doc;
-
-	// find textarea, make sure browser supports necessary functions
-	if (document.forms[form_name]) {
-		doc = document;
-	} else {
-		doc = opener.document;
-	}
-
-	if (!doc.forms[form_name]) {
-		return;
-	}
-
-	return doc.forms[form_name].elements[text_name];
-}
-
 (function($) {
 	'use strict';
 
-	$(document).ready(function() {
+	$(document).ready(() => {
-		const textarea = getEditorTextArea();
+		const textarea = phpbb.getEditorTextArea(form_name, text_name);
 
 		if (typeof textarea === 'undefined') {
 			return;

phpBB/assets/javascript/mentions.js

@@ -311,7 +311,8 @@
 	phpbb.mentions = new Mentions();
 
 	$(document).ready(() => {
-		const textarea = getEditorTextArea();
+		/* global form_name, text_name */
+		const textarea = phpbb.getEditorTextArea(form_name, text_name);
 
 		if (typeof textarea === 'undefined') {
 			return;