element-plus/es/components/tree/src/tree.vue2.mjs

A Component Library for Vue 3

import { defineComponent, ref, getCurrentInstance, computed, watch, provide } from 'vue';
import { isEqual } from 'lodash-unified';
import TreeStore from './model/tree-store.mjs';
import { getNodeKey, handleCurrentChange } from './model/util.mjs';
import ElTreeNode from './tree-node.vue.mjs';
import { useNodeExpandEventBroadcast } from './model/useNodeExpandEventBroadcast.mjs';
import { useDragNodeHandler } from './model/useDragNode.mjs';
import { useKeydown } from './model/useKeydown.mjs';
import { ROOT_TREE_INJECTION_KEY } from './tokens.mjs';
import { treeEmits, treeProps } from './tree.mjs';
import { useLocale } from '../../../hooks/use-locale/index.mjs';
import { useNamespace } from '../../../hooks/use-namespace/index.mjs';
import { formItemContextKey } from '../../form/src/constants.mjs';

var _sfc_main = defineComponent({
  name: "ElTree",
  components: { ElTreeNode },
  props: treeProps,
  emits: treeEmits,
  setup(props, ctx) {
    const { t } = useLocale();
    const ns = useNamespace("tree");
    const store = ref(
      new TreeStore({
        key: props.nodeKey,
        data: props.data,
        lazy: props.lazy,
        props: props.props,
        load: props.load,
        currentNodeKey: props.currentNodeKey,
        checkStrictly: props.checkStrictly,
        checkDescendants: props.checkDescendants,
        defaultCheckedKeys: props.defaultCheckedKeys,
        defaultExpandedKeys: props.defaultExpandedKeys,
        autoExpandParent: props.autoExpandParent,
        defaultExpandAll: props.defaultExpandAll,
        filterNodeMethod: props.filterNodeMethod
      })
    );
    store.value.initialize();
    const root = ref(store.value.root);
    const currentNode = ref(null);
    const el$ = ref(null);
    const dropIndicator$ = ref(null);
    const { broadcastExpanded } = useNodeExpandEventBroadcast(props);
    const { dragState } = useDragNodeHandler({
      props,
      ctx,
      el$,
      dropIndicator$,
      store
    });
    useKeydown({ el$ }, store);
    const instance = getCurrentInstance();
    const isSelectTree = computed(() => {
      let parent = instance == null ? void 0 : instance.parent;
      while (parent) {
        if (parent.type.name === "ElTreeSelect") {
          return true;
        }
        parent = parent.parent;
      }
      return false;
    });
    const isEmpty = computed(() => {
      const { childNodes } = root.value;
      return (!childNodes || childNodes.length === 0 || childNodes.every(({ visible }) => !visible)) && !isSelectTree.value;
    });
    watch(
      () => props.currentNodeKey,
      (newVal) => {
        store.value.setCurrentNodeKey(newVal != null ? newVal : null);
      }
    );
    watch(
      () => props.defaultCheckedKeys,
      (newVal, oldVal) => {
        if (isEqual(newVal, oldVal)) return;
        store.value.setDefaultCheckedKey(newVal != null ? newVal : []);
      }
    );
    watch(
      () => props.defaultExpandedKeys,
      (newVal) => {
        store.value.setDefaultExpandedKeys(newVal != null ? newVal : []);
      }
    );
    watch(
      () => props.data,
      (newVal) => {
        store.value.setData(newVal);
      },
      { deep: true }
    );
    watch(
      () => props.checkStrictly,
      (newVal) => {
        store.value.checkStrictly = newVal;
      }
    );
    const filter = (value) => {
      if (!props.filterNodeMethod)
        throw new Error("[Tree] filterNodeMethod is required when filter");
      store.value.filter(value);
    };
    const getNodeKey$1 = (node) => {
      return getNodeKey(props.nodeKey, node.data);
    };
    const requireNodeKey = (methodName) => {
      if (!props.nodeKey) {
        throw new Error(`[Tree] nodeKey is required in ${methodName}`);
      }
    };
    const getNodePath = (data) => {
      requireNodeKey("getNodePath");
      const node = store.value.getNode(data);
      if (!node) return [];
      const path = [node.data];
      let parent = node.parent;
      while (parent && parent !== root.value) {
        path.push(parent.data);
        parent = parent.parent;
      }
      return path.reverse();
    };
    const getCheckedNodes = (leafOnly, includeHalfChecked) => {
      return store.value.getCheckedNodes(leafOnly, includeHalfChecked);
    };
    const getCheckedKeys = (leafOnly) => {
      return store.value.getCheckedKeys(leafOnly);
    };
    const getCurrentNode = () => {
      const currentNode2 = store.value.getCurrentNode();
      return currentNode2 ? currentNode2.data : null;
    };
    const getCurrentKey = () => {
      requireNodeKey("getCurrentKey");
      const currentNode2 = getCurrentNode();
      return currentNode2 ? currentNode2[props.nodeKey] : null;
    };
    const setCheckedNodes = (nodes, leafOnly) => {
      requireNodeKey("setCheckedNodes");
      store.value.setCheckedNodes(nodes, leafOnly);
    };
    const setCheckedKeys = (keys, leafOnly) => {
      requireNodeKey("setCheckedKeys");
      store.value.setCheckedKeys(keys, leafOnly);
    };
    const setChecked = (data, checked, deep) => {
      store.value.setChecked(data, checked, deep);
    };
    const getHalfCheckedNodes = () => {
      return store.value.getHalfCheckedNodes();
    };
    const getHalfCheckedKeys = () => {
      return store.value.getHalfCheckedKeys();
    };
    const setCurrentNode = (node, shouldAutoExpandParent = true) => {
      requireNodeKey("setCurrentNode");
      handleCurrentChange(store, ctx.emit, () => {
        broadcastExpanded(node);
        store.value.setUserCurrentNode(node, shouldAutoExpandParent);
      });
    };
    const setCurrentKey = (key = null, shouldAutoExpandParent = true) => {
      requireNodeKey("setCurrentKey");
      handleCurrentChange(store, ctx.emit, () => {
        broadcastExpanded();
        store.value.setCurrentNodeKey(key, shouldAutoExpandParent);
      });
    };
    const getNode = (data) => {
      return store.value.getNode(data);
    };
    const remove = (data) => {
      store.value.remove(data);
    };
    const append = (data, parentNode) => {
      store.value.append(data, parentNode);
    };
    const insertBefore = (data, refNode) => {
      store.value.insertBefore(data, refNode);
    };
    const insertAfter = (data, refNode) => {
      store.value.insertAfter(data, refNode);
    };
    const handleNodeExpand = (nodeData, node, instance2) => {
      broadcastExpanded(node);
      ctx.emit("node-expand", nodeData, node, instance2);
    };
    const updateKeyChildren = (key, data) => {
      requireNodeKey("updateKeyChild");
      store.value.updateChildren(key, data);
    };
    provide(ROOT_TREE_INJECTION_KEY, {
      ctx,
      props,
      store,
      root,
      currentNode,
      instance
    });
    provide(formItemContextKey, void 0);
    return {
      ns,
      // ref
      store,
      root,
      currentNode,
      dragState,
      el$,
      dropIndicator$,
      // computed
      isEmpty,
      // methods
      filter,
      getNodeKey: getNodeKey$1,
      getNodePath,
      getCheckedNodes,
      getCheckedKeys,
      getCurrentNode,
      getCurrentKey,
      setCheckedNodes,
      setCheckedKeys,
      setChecked,
      getHalfCheckedNodes,
      getHalfCheckedKeys,
      setCurrentNode,
      setCurrentKey,
      t,
      getNode,
      remove,
      append,
      insertBefore,
      insertAfter,
      handleNodeExpand,
      updateKeyChildren
    };
  }
});

export { _sfc_main as default };
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