react-native-tree-multi-select/lib/commonjs/helpers/treeNode.helper.js

A super-fast, customizable tree view component for React Native with multi-selection, checkboxes, and search filtering capabilities.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.initializeNodeMaps = initializeNodeMaps;
var _treeView = require("../store/treeView.store");
/**
 * Initialize the maps for tracking tree nodes and their parent-child relationships.
 *
 * This function is intended to be called once, during component initialization,
 * with the initial tree data and any preselected node IDs.
 *
 * @param initialData - An array of TreeNode objects that represent the initial tree structure.
 * @param preselectedIds - An optional array of TreeNode IDs that should be preselected.
 */
function initializeNodeMaps(storeId, initialData) {
  const treeViewStore = (0, _treeView.getTreeViewStore)(storeId);
  const {
    updateNodeMap,
    updateChildToParentMap
  } = treeViewStore.getState();
  const tempNodeMap = new Map();
  const tempChildToParentMap = new Map();

  /**
   * Recursively processes nodes, adding them to the nodeMap and childToParentMap.
   *
   * @param nodes - An array of TreeNode objects to be processed.
   * @param parentId - The ID of the parent node, if applicable.
   */
  const processNodes = (nodes, parentId = null) => {
    nodes.forEach(node => {
      // Each node is added to the nodeMap with its ID as the key
      tempNodeMap.set(node.id, node);
      // If the node has a parent, its ID is mapped to the parent's ID in the childToParentMap
      if (parentId) tempChildToParentMap.set(node.id, parentId);
      // If the node has children, recursively process them
      if (node.children) processNodes(node.children, node.id);
    });
  };

  // Begin processing with the initial tree data
  processNodes(initialData);
  updateNodeMap(tempNodeMap);
  updateChildToParentMap(tempChildToParentMap);
}
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