Preserve collapsed FilterEditor subtrees across auto-refreshes

refs #2964

library/Icinga/Web/JavaScript.php

@@ -34,6 +34,7 @@ class JavaScript
         'js/icinga/behavior/actiontable.js',
         'js/icinga/behavior/flyover.js',
         'js/icinga/behavior/expandable.js',
+        'js/icinga/behavior/filtereditor.js',
         'js/icinga/behavior/selectable.js'
     );
 

public/js/icinga/behavior/filtereditor.js

@@ -0,0 +1,69 @@
+/* Icinga Web 2 | (c) 2018 Icinga Development Team | GPLv2+ */
+
+/**
+ * Icinga.Behavior.FilterEditor
+ *
+ * Initially expanded, but collapsable subtrees
+ */
+(function(Icinga, $) {
+
+    'use strict';
+
+    var containerId = /^col(\d+)$/;
+    var filterEditors = {};
+
+    function FilterEditor(icinga) {
+        Icinga.EventListener.call(this, icinga);
+
+        this.on('beforerender', this.beforeRender, this);
+        this.on('rendered', this.onRendered, this);
+    }
+
+    FilterEditor.prototype = new Icinga.EventListener();
+
+    FilterEditor.prototype.beforeRender = function(event) {
+        var $container = $(event.target);
+        var match = containerId.exec($container.attr('id'));
+
+        if (match !== null) {
+            var id = match[1];
+            var subTrees = {};
+            filterEditors[id] = subTrees;
+
+            $container.find('.tree .handle').each(function () {
+                var $li = $(this).closest('li');
+
+                subTrees[$li.find('select').first().attr('name')] = $li.hasClass('collapsed');
+            });
+        }
+    };
+
+    FilterEditor.prototype.onRendered = function(event) {
+        var $container = $(event.target);
+        var match = containerId.exec($container.attr('id'));
+
+        if (match !== null) {
+            var id = match[1];
+
+            if (typeof filterEditors[id] !== "undefined") {
+                var subTrees = filterEditors[id];
+                delete filterEditors[id];
+
+                $container.find('.tree .handle').each(function () {
+                    var $li = $(this).closest('li');
+                    var name = $li.find('select').first().attr('name');
+                    if (typeof subTrees[name] !== "undefined" && subTrees[name] !== $li.hasClass('collapsed')) {
+                        $li.toggleClass('collapsed');
+                    }
+                });
+
+                icinga.ui.fixControls($container);
+            }
+        }
+    };
+
+    Icinga.Behaviors = Icinga.Behaviors || {};
+
+    Icinga.Behaviors.FilterEditor = FilterEditor;
+
+}) (Icinga, jQuery);

public/js/icinga/events.js

@@ -163,6 +163,8 @@
             } else {
                 $parent.addClass('collapsed');
             }
+
+            icinga.ui.fixControls($parent.closest('.container'));
         },
 
         onLoad: function (event) {