X-Git-Url: https://git.arvados.org/arvados-workbench2.git/blobdiff_plain/486b76baf259d3b83bc551cd0f7dd0c9d4395961..3d93769b1906fd43bade1c053429541877a75cc9:/src/models/tree.ts

diff --git a/src/models/tree.ts b/src/models/tree.ts
index bdcd7309..de2f7b71 100644
--- a/src/models/tree.ts
+++ b/src/models/tree.ts
@@ -27,7 +27,8 @@ export enum TreeNodeStatus {
 export enum TreePickerId {
     PROJECTS = 'Projects',
     SHARED_WITH_ME = 'Shared with me',
-    FAVORITES = 'Favorites'
+    FAVORITES = 'Favorites',
+    PUBLIC_FAVORITES = 'Public Favorites'
 }
 
 export const createTree = <T>(): Tree<T> => ({});
@@ -95,6 +96,12 @@ export const getNodeAncestorsIds = (id: string) => <T>(tree: Tree<T>): string[]
 export const getNodeDescendants = (id: string, limit = Infinity) => <T>(tree: Tree<T>) =>
     mapIdsToNodes(getNodeDescendantsIds(id, limit)(tree))(tree);
 
+export const countNodes = <T>(tree: Tree<T>) =>
+    getNodeDescendantsIds('')(tree).length;
+
+export const countChildren = (id: string) => <T>(tree: Tree<T>) =>
+    getNodeChildren('')(tree).length;
+
 export const getNodeDescendantsIds = (id: string, limit = Infinity) => <T>(tree: Tree<T>): string[] => {
     const node = getNode(id)(tree);
     const children = node ? node.children :
@@ -175,6 +182,10 @@ export const deselectNodes = (id: string | string[]) => <T>(tree: Tree<T>) => {
     return ids.reduce((tree, id) => deselectNode(id)(tree), tree);
 };
 
+export const getSelectedNodes = <T>(tree: Tree<T>) =>
+    getNodeDescendants('')(tree)
+        .filter(node => node.selected);
+
 export const initTreeNode = <T>(data: Pick<TreeNode<T>, 'id' | 'value'> & { parent?: string }): TreeNode<T> => ({
     children: [],
     active: false,
@@ -227,6 +238,9 @@ const getRootNodeChildrenIds = <T>(tree: Tree<T>) =>
 
 
 const addChild = (parentId: string, childId: string) => <T>(tree: Tree<T>): Tree<T> => {
+    if (childId === "") {
+        return tree;
+    }
     const node = getNode(parentId)(tree);
     if (node) {
         const children = node.children.some(id => id === childId)