Method updateChildren

src/tree/model/node.js:312–336

()

  }

  updateChildren() {
    const newData = this.getChildren() || [];
    const oldData = this.childNodes.map((node) => node.data);

    const newDataMap = {};
    const newNodes = [];

    newData.forEach((item, index) => {
      if (item[NODE_KEY]) {
        newDataMap[item[NODE_KEY]] = { index, data: item };
      } else {
        newNodes.push({ index, data: item });
      }
    });

    oldData.forEach((item) => {
      if (!newDataMap[item[NODE_KEY]]) this.removeChildByData(item);
    });

    newNodes.forEach(({ index, data }) => {
      this.insertChild({ data }, index);
    });

    this.updateLeafState();
  }

  loadData(callback, defaultProps = {}) {
    if (this.store.lazy === true && this.store.load && !this.loaded && !this.loading) {