getAllNested for collections too. added treenodeobject interface

src/misc/serviceUtils.ts

@@ -0,0 +1,37 @@
+import {
+    ITreeNodeObject,
+    TreeNode,
+} from '../models/domain/treeNode';
+
+export class ServiceUtils {
+    static nestedTraverse(nodeTree: Array<TreeNode<ITreeNodeObject>>, partIndex: number, parts: string[],
+        obj: ITreeNodeObject, delimiter: string) {
+        if (parts.length <= partIndex) {
+            return;
+        }
+
+        const end = partIndex === parts.length - 1;
+        const partName = parts[partIndex];
+
+        for (let i = 0; i < nodeTree.length; i++) {
+            if (nodeTree[i].node.name === parts[partIndex]) {
+                if (end && nodeTree[i].node.id !== obj.id) {
+                    // Another node with the same name.
+                    nodeTree.push(new TreeNode(obj, partName));
+                    return;
+                }
+                this.nestedTraverse(nodeTree[i].children, partIndex + 1, parts, obj, delimiter);
+                return;
+            }
+        }
+
+        if (nodeTree.filter((n) => n.node.name === partName).length === 0) {
+            if (end) {
+                nodeTree.push(new TreeNode(obj, partName));
+                return;
+            }
+            const newPartName = parts[partIndex] + delimiter + parts[partIndex + 1];
+            this.nestedTraverse(nodeTree, 0, [newPartName, ...parts.slice(partIndex + 2)], obj, delimiter);
+        }
+    }
+}