filter dialog: add inline regexp checker

1 files changed, 12 insertions, 1 deletions

diff --git a/js/CommonFilters.js b/js/CommonFilters.js
index c3f5d0712..1538a3fb3 100644
--- a/js/CommonFilters.js
+++ b/js/CommonFilters.js
@@ -3,10 +3,21 @@
 define(["dojo/_base/declare"], function (declare) {
 	Filters = {
 		filterDlgCheckRegExp: function(sender) {
+			const tooltip = dijit.byId("filterDlg_regExp_tip").domNode;
+
 			try {
+				sender.domNode.removeClassName("invalid");
+				sender.domNode.removeClassName("valid");
+
 				new RegExp("/" + sender.value + "/");
+
+				sender.domNode.addClassName("valid");
+				tooltip.innerText = __("Regular expression, without outer delimiters (i.e. slashes)");
+
 			} catch (e) {
-				console.error(e);
+				sender.domNode.addClassName("invalid");
+
+				tooltip.innerText = e.message;
 			}
 		},
 		filterDlgCheckAction: function(sender) {