X-Git-Url: https://git.arvados.org/arvados-workbench2.git/blobdiff_plain/90df34ba0e84b5735c48382362284b5f0382dd0e..ceca6c57cc7d0357ab74abd47b80633a885ec575:/src/models/tree.ts

diff --git a/src/models/tree.ts b/src/models/tree.ts
index a5fb49cf..f0b53b46 100644
--- a/src/models/tree.ts
+++ b/src/models/tree.ts
@@ -2,6 +2,7 @@
 //
 // SPDX-License-Identifier: AGPL-3.0
 
+import { pipe } from 'lodash/fp';
 export type Tree<T> = Record<string, TreeNode<T>>;
 
 export const TREE_ROOT_ID = '';
@@ -11,6 +12,16 @@ export interface TreeNode<T = any> {
     value: T;
     id: string;
     parent: string;
+    active: boolean;
+    selected: boolean;
+    expanded: boolean;
+    status: TreeNodeStatus;
+}
+
+export enum TreeNodeStatus {
+    INITIAL = 'INITIAL',
+    PENDING = 'PENDING',
+    LOADED = 'LOADED',
 }
 
 export const createTree = <T>(): Tree<T> => ({});
@@ -18,12 +29,12 @@ export const createTree = <T>(): Tree<T> => ({});
 export const getNode = (id: string) => <T>(tree: Tree<T>): TreeNode<T> | undefined => tree[id];
 
 export const setNode = <T>(node: TreeNode<T>) => (tree: Tree<T>): Tree<T> => {
-    const [newTree] = [tree]
-        .map(tree => getNode(node.id)(tree) === node
+    return pipe(
+        (tree: Tree<T>) => getNode(node.id)(tree) === node
             ? tree
-            : { ...tree, [node.id]: node })
-        .map(addChild(node.parent, node.id));
-    return newTree;
+            : { ...tree, [node.id]: node },
+        addChild(node.parent, node.id)
+    )(tree);
 };
 
 export const getNodeValue = (id: string) => <T>(tree: Tree<T>) => {
@@ -95,6 +106,104 @@ export const getNodeChildrenIds = (id: string) => <T>(tree: Tree<T>): string[] =
 export const mapIdsToNodes = (ids: string[]) => <T>(tree: Tree<T>) =>
     ids.map(id => getNode(id)(tree)).filter((node): node is TreeNode<T> => node !== undefined);
 
+export const activateNode = (id: string) => <T>(tree: Tree<T>) =>
+    mapTree(node => node.id === id ? { ...node, active: true } : { ...node, active: false })(tree);
+
+export const deactivateNode = <T>(tree: Tree<T>) =>
+    mapTree(node => node.active ? { ...node, active: false } : node)(tree);
+
+export const expandNode = (...ids: string[]) => <T>(tree: Tree<T>) =>
+    mapTree(node => ids.some(id => id === node.id) ? { ...node, expanded: true } : node)(tree);
+
+export const collapseNode = (...ids: string[]) => <T>(tree: Tree<T>) =>
+    mapTree(node => ids.some(id => id === node.id) ? { ...node, expanded: false } : node)(tree);
+
+export const toggleNodeCollapse = (...ids: string[]) => <T>(tree: Tree<T>) =>
+    mapTree(node => ids.some(id => id === node.id) ? { ...node, expanded: !node.expanded } : node)(tree);
+
+export const setNodeStatus = (id: string) => (status: TreeNodeStatus) => <T>(tree: Tree<T>) => {
+    const node = getNode(id)(tree);
+    return node
+        ? setNode({ ...node, status })(tree)
+        : tree;
+};
+
+export const toggleNodeSelection = (id: string) => <T>(tree: Tree<T>) => {
+    const node = getNode(id)(tree);
+    return node
+        ? pipe(
+            setNode({ ...node, selected: !node.selected }),
+            toggleAncestorsSelection(id),
+            toggleDescendantsSelection(id))(tree)
+        : tree;
+
+};
+
+export const selectNode = (id: string) => <T>(tree: Tree<T>) => {
+    const node = getNode(id)(tree);
+    return node && node.selected
+        ? tree
+        : toggleNodeSelection(id)(tree);
+};
+
+export const selectNodes = (id: string | string[]) => <T>(tree: Tree<T>) => {
+    const ids = typeof id === 'string' ? [id] : id;
+    return ids.reduce((tree, id) => selectNode(id)(tree), tree);
+};
+export const deselectNode = (id: string) => <T>(tree: Tree<T>) => {
+    const node = getNode(id)(tree);
+    return node && node.selected
+        ? toggleNodeSelection(id)(tree)
+        : tree;
+};
+
+export const deselectNodes = (id: string | string[]) => <T>(tree: Tree<T>) => {
+    const ids = typeof id === 'string' ? [id] : id;
+    return ids.reduce((tree, id) => deselectNode(id)(tree), tree);
+};
+
+export const initTreeNode = <T>(data: Pick<TreeNode<T>, 'id' | 'value'> & { parent?: string }): TreeNode<T> => ({
+    children: [],
+    active: false,
+    selected: false,
+    expanded: false,
+    status: TreeNodeStatus.INITIAL,
+    parent: '',
+    ...data,
+});
+
+const toggleDescendantsSelection = (id: string) => <T>(tree: Tree<T>) => {
+    const node = getNode(id)(tree);
+    if (node) {
+        return getNodeDescendants(id)(tree)
+            .reduce((newTree, subNode) =>
+                setNode({ ...subNode, selected: node.selected })(newTree),
+                tree);
+    }
+    return tree;
+};
+
+const toggleAncestorsSelection = (id: string) => <T>(tree: Tree<T>) => {
+    const ancestors = getNodeAncestorsIds(id)(tree).reverse();
+    return ancestors.reduce((newTree, parent) => parent ? toggleParentNodeSelection(parent)(newTree) : newTree, tree);
+};
+
+const toggleParentNodeSelection = (id: string) => <T>(tree: Tree<T>) => {
+    const node = getNode(id)(tree);
+    if (node) {
+        const parentNode = getNode(node.id)(tree);
+        if (parentNode) {
+            const selected = parentNode.children
+                .map(id => getNode(id)(tree))
+                .every(node => node !== undefined && node.selected);
+            return setNode({ ...parentNode, selected })(tree);
+        }
+        return setNode(node)(tree);
+    }
+    return tree;
+};
+
+
 const mapNodeValue = <T, R>(mapFn: (value: T) => R) => (node: TreeNode<T>): TreeNode<R> =>
     ({ ...node, value: mapFn(node.value) });