Fixed showing child fields as options when sorting an object

src/css/contextmenu.css

@@ -353,6 +353,39 @@ div.jsoneditor-contextmenu button.jsoneditor-type-modes > div.jsoneditor-icon {
   color: #808080;
 }
 
+.jsoneditor-modal .jsoneditor-select-wrapper {
+  position: relative;
+  display: inline-block;
+}
+
+.jsoneditor-modal .jsoneditor-select-wrapper:after {
+  content: "";
+  width: 0;
+  height: 0;
+  border-left: 5px solid transparent;
+  border-right: 5px solid transparent;
+  border-top: 6px solid #666;
+  position: absolute;
+  right: 8px;
+  top: 14px;
+  pointer-events: none;
+}
+
+.jsoneditor-modal select {
+  padding: 3px 24px 3px 10px;
+  min-width: 180px;
+  max-width: 350px;
+
+  -webkit-appearance:none;
+  -moz-appearance:none;
+  appearance: none;
+
+  text-indent: 0;
+  text-overflow: "";
+  font-size: 10pt;
+  line-height: 1.5em;
+}
+
 .jsoneditor-modal select::-ms-expand {
     display: none;
 }

src/js/showSortModal.js

@@ -61,7 +61,9 @@ function showSortModal (node, container) {
         var field = modal.modalElem().querySelector('#field');
         var direction = modal.modalElem().querySelector('#direction');
 
-        var paths = node.getChildPaths();
+        var paths = node.type === 'array'
+            ? node.getChildPaths()
+            : ['.'];
 
         paths.forEach(function (path) {
           var option = document.createElement('option');