VisualFilter - check previously set filters were set before highlighting

changedetectionio/static/js/visual-selector.js

@@ -13,7 +13,7 @@ $(document).ready(function() {
     // redline highlight context
     var ctx;
 
-    var current_default_xpath;
+    var current_default_xpath=[];
     var x_scale=1;
     var y_scale=1;
     var selector_image;
@@ -57,21 +57,24 @@ $(document).ready(function() {
     bootstrap_visualselector();
 
 
-
     function bootstrap_visualselector() {
-        if ( 1 ) {
+        if (1) {
             // bootstrap it, this will trigger everything else
             $("img#selector-background").bind('load', function () {
                 console.log("Loaded background...");
-               c = document.getElementById("selector-canvas");
+                c = document.getElementById("selector-canvas");
                 // greyed out fill context
-               xctx = c.getContext("2d");
+                xctx = c.getContext("2d");
                 // redline highlight context
-               ctx = c.getContext("2d");
-               current_default_xpath =$("#include_filters").val().split(/\r?\n/g);
-               fetch_data();
-               $('#selector-canvas').off("mousemove mousedown");
-               // screenshot_url defined in the edit.html template
+                ctx = c.getContext("2d");
+                if ($("#include_filters").val().trim().length) {
+                    current_default_xpath = $("#include_filters").val().split(/\r?\n/g);
+                } else {
+                    current_default_xpath = [];
+                }
+                fetch_data();
+                $('#selector-canvas').off("mousemove mousedown");
+                // screenshot_url defined in the edit.html template
             }).attr("src", screenshot_url);
         }
     }