SOLR-14549: Fix listing of Files in a Directory on Solr Admin UI

* Ensure that jstree can update data behind the scenes
* Fix file jstree object to represent open/closed correctly
* Upgrade jstree to 3.3.10 for compatibility with JQuery 3.5.x

Closes #1989

solr/CHANGES.txt

@@ -274,6 +274,8 @@ Bug Fixes
 
 * SOLR-14483: Fix empty drop down for adding replica in Admin UI (Sayan Das via Eric Pugh)
 
+* SOLR-14549: Fix listing of Files in a Directory on Solr Admin UI (Kevin Risden)
+
 Other Changes
 ---------------------
 

solr/NOTICE.txt

@@ -38,7 +38,7 @@ This product includes jquery.form Javascript library created by Mike Alsup
 Copyright 2006-2014 (c) M. Alsup, https://github.com/malsup/form/
 
 This product includes the jstree Javascript library created by Ivan Bozhanov
-Copyright (c) 2013-2014 Ivan Bozhanov, https://github.com/vakata/jstree
+Copyright (c) 2013-2020 Ivan Bozhanov, https://github.com/vakata/jstree
 
 This product includes jquery.timeago.js Javascript library by Ryan McGeary
 Copyright (c) 2008-2014, Ryan McGeary, https://github.com/rmm5t/jquery-timeago

solr/webapp/web/js/angular/app.js

@@ -315,12 +315,17 @@ solrAdminApp.config([
                   var treeConfig = {
                     'core' : {
                       'animation' : 0,
-                      'data': scope.data,
                       'worker': false
                     }
                   };
 
                   var tree = $(element).jstree(treeConfig);
+
+                  // This is done to ensure that the data can be refreshed if it is updated behind the scenes.
+                  // Putting the data in the treeConfig makes it stack and doesn't update.
+                  $(element).jstree(true).settings.core.data = scope.data;
+                  $(element).jstree(true).refresh();
+
                   $(element).jstree('open_node','li:first');
                   if (tree) {
                       element.bind("select_node.jstree", function (event, data) {

solr/webapp/web/js/angular/controllers/files.js

@@ -31,9 +31,9 @@ solrAdminApp.controller('FilesController',
 
             var process = function (path, tree) {
                 var params = {core: $routeParams.core};
-                if (path.slice(-1) == '/') {
+                if (path.slice(-1) === '/') {
                     params.file = path.slice(0, -1);
-                } else if (path!='') {
+                } else if (path!=='') {
                     params.file = path;
                 }
 
@@ -48,10 +48,10 @@ solrAdminApp.controller('FilesController',
 
                         if (filedata.directory) {
                             file = file + "/";
-                            if ($scope.file && $scope.file.indexOf(path + file) == 0) {
+                            if ($scope.file && $scope.file.indexOf(path + file) === 0) {
-                                state = "open";
+                                state = {"opened": true};
                             } else {
-                                state = "closed";
+                                state = {"opened": false};
                             }
                             children = [];
                             process(path + file, children);
@@ -68,9 +68,9 @@ solrAdminApp.controller('FilesController',
             $scope.tree = [];
             process("", $scope.tree);
 
-            if ($scope.file && $scope.file != '' && $scope.file.split('').pop()!='/') {
+            if ($scope.file && $scope.file !== '' && $scope.file.split('').pop()!=='/') {
                 var extension;
-                if ($scope.file == "managed-schema") {
+                if ($scope.file === "managed-schema") {
                   extension = contentTypeMap['xml'];
                 } else {
                   extension = $scope.file.match( /\.(\w+)$/)[1] || '';