Method handleExpandIconClick

src/tree/Node.jsx:141–161

(evt: ?SyntheticEvent<any>)

  }

  handleExpandIconClick(evt: ?SyntheticEvent<any>): void {
    if (evt) evt.stopPropagation();

    const { nodeModel, parent } = this.props;
    const {onNodeCollapse, onNodeExpand} = this.props.treeNode.props;

    if (nodeModel.isLeaf) return;

    if (nodeModel.expanded) {
      nodeModel.collapse()
      this.refresh()
      onNodeCollapse(nodeModel.data, nodeModel, this)
    } else {
      nodeModel.expand(() => {
        this.setState({childNodeRendered: true }, () => {
          onNodeExpand(nodeModel.data, nodeModel, this)
        });
        parent.closeSiblings(nodeModel)
      });
    }
  }

  closeSiblings(exclude: any){
    const {treeNode, nodeModel} = this.props;