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import type { InsertNodeParams, KeyType, FieldNames, TreeItem } from '../types/tree'; |
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import type { Ref, ComputedRef } from 'vue'; |
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import type { TreeDataItem } from 'ant-design-vue/es/tree/Tree'; |
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import { cloneDeep } from 'lodash-es'; |
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import { unref } from 'vue'; |
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import { forEach } from '/@/utils/helper/treeHelper'; |
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export function useTree(treeDataRef: Ref<TreeDataItem[]>, getFieldNames: ComputedRef<FieldNames>) { |
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function getAllKeys(list?: TreeDataItem[]) { |
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const keys: string[] = []; |
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const treeData = list || unref(treeDataRef); |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return keys; |
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for (let index = 0; index < treeData.length; index++) { |
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const node = treeData[index]; |
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keys.push(node[keyField]!); |
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const children = node[childrenField]; |
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if (children && children.length) { |
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keys.push(...(getAllKeys(children) as string[])); |
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} |
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} |
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return keys as KeyType[]; |
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} |
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// get keys that can be checked and selected |
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function getEnabledKeys(list?: TreeDataItem[]) { |
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const keys: string[] = []; |
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const treeData = list || unref(treeDataRef); |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return keys; |
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for (let index = 0; index < treeData.length; index++) { |
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const node = treeData[index]; |
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node.disabled !== true && node.selectable !== false && keys.push(node[keyField]!); |
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const children = node[childrenField]; |
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if (children && children.length) { |
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keys.push(...(getEnabledKeys(children) as string[])); |
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} |
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} |
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return keys as KeyType[]; |
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} |
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function getChildrenKeys(nodeKey: string | number, list?: TreeDataItem[]) { |
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const keys: KeyType[] = []; |
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const treeData = list || unref(treeDataRef); |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return keys; |
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for (let index = 0; index < treeData.length; index++) { |
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const node = treeData[index]; |
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const children = node[childrenField]; |
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if (nodeKey === node[keyField]) { |
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keys.push(node[keyField]!); |
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if (children && children.length) { |
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keys.push(...(getAllKeys(children) as string[])); |
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} |
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} else { |
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if (children && children.length) { |
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keys.push(...getChildrenKeys(nodeKey, children)); |
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} |
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} |
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} |
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return keys as KeyType[]; |
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} |
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// Update node |
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function updateNodeByKey(key: string, node: Omit<TreeDataItem, 'key'>, list?: TreeDataItem[]) { |
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if (!key) return; |
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const treeData = list || unref(treeDataRef); |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return; |
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for (let index = 0; index < treeData.length; index++) { |
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const element: any = treeData[index]; |
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const children = element[childrenField]; |
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if (element[keyField] === key) { |
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treeData[index] = { ...treeData[index], ...node }; |
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break; |
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} else if (children && children.length) { |
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updateNodeByKey(key, node, element[childrenField]); |
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} |
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} |
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} |
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// Expand the specified level |
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function filterByLevel(level = 1, list?: TreeDataItem[], currentLevel = 1) { |
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if (!level) { |
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return []; |
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} |
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const res: (string | number)[] = []; |
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const data = list || unref(treeDataRef) || []; |
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for (let index = 0; index < data.length; index++) { |
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const item = data[index]; |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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const key = keyField ? item[keyField] : ''; |
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const children = childrenField ? item[childrenField] : []; |
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res.push(key); |
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if (children && children.length && currentLevel < level) { |
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currentLevel += 1; |
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res.push(...filterByLevel(level, children, currentLevel)); |
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} |
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} |
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return res as string[] | number[]; |
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} |
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/** |
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* 添加节点 |
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*/ |
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function insertNodeByKey({ parentKey = null, node, push = 'push' }: InsertNodeParams) { |
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const treeData: any = cloneDeep(unref(treeDataRef)); |
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if (!parentKey) { |
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treeData[push](node); |
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treeDataRef.value = treeData; |
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return; |
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} |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return; |
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forEach(treeData, (treeItem) => { |
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if (treeItem[keyField] === parentKey) { |
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treeItem[childrenField] = treeItem[childrenField] || []; |
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treeItem[childrenField][push](node); |
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return true; |
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} |
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}); |
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treeDataRef.value = treeData; |
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} |
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/** |
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* 批量添加节点 |
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*/ |
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function insertNodesByKey({ parentKey = null, list, push = 'push' }: InsertNodeParams) { |
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const treeData: any = cloneDeep(unref(treeDataRef)); |
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if (!list || list.length < 1) { |
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return; |
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} |
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if (!parentKey) { |
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for (let i = 0; i < list.length; i++) { |
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treeData[push](list[i]); |
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} |
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treeDataRef.value = treeData; |
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return; |
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} else { |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return; |
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forEach(treeData, (treeItem) => { |
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if (treeItem[keyField] === parentKey) { |
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treeItem[childrenField] = treeItem[childrenField] || []; |
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for (let i = 0; i < list.length; i++) { |
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treeItem[childrenField][push](list[i]); |
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} |
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treeDataRef.value = treeData; |
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return true; |
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} |
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}); |
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} |
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} |
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// Delete node |
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function deleteNodeByKey(key: string, list?: TreeDataItem[]) { |
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if (!key) return; |
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const treeData = list || unref(treeDataRef); |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!childrenField || !keyField) return; |
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for (let index = 0; index < treeData.length; index++) { |
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const element: any = treeData[index]; |
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const children = element[childrenField]; |
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if (element[keyField] === key) { |
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treeData.splice(index, 1); |
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break; |
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} else if (children && children.length) { |
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deleteNodeByKey(key, element[childrenField]); |
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} |
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} |
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} |
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// Get selected node |
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function getSelectedNode(key: KeyType, list?: TreeItem[], selectedNode?: TreeItem | null) { |
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if (!key && key !== 0) return null; |
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const treeData = list || unref(treeDataRef); |
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const { key: keyField, children: childrenField } = unref(getFieldNames); |
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if (!keyField) return null; |
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treeData.forEach((item) => { |
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if (selectedNode?.key || selectedNode?.key === 0) return selectedNode; |
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if (item[keyField] === key) { |
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selectedNode = item; |
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return; |
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} |
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if (item[childrenField!] && item[childrenField!].length) { |
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selectedNode = getSelectedNode(key, item[childrenField!], selectedNode); |
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} |
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}); |
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return selectedNode || null; |
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} |
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return { |
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deleteNodeByKey, |
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insertNodeByKey, |
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insertNodesByKey, |
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filterByLevel, |
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updateNodeByKey, |
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getAllKeys, |
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getChildrenKeys, |
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getEnabledKeys, |
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getSelectedNode, |
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}; |
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} |