GoJs分组绘图模板go.Group使用示例详解

//data
nodes: [
    {
      key: "1",
      text: "三国人物志",
      isGroup: true
    },
    {
      key: "1-1",
      text: "魏",
      group: "1",
      isGroup: true
    },
    {
      key: "1-1-1",
      text: "曹丕",
      group: "1-1",
    },
    {
      key: "1-2",
      text: "蜀",
      group: "1",
      isGroup: true
    },
    {
      key: "1-2-1",
      text: "刘备",
      group: "1-2",
    },
    {
      key: "1-3",
      text: "吴",
      group: "1",
      isGroup: true
    },
    {
      key: "1-3-1",
      text: "孙权",
      group: "1-3",
    },
  ],
  links: [
  ],
  //methods
  this.myDiagram = $$(Go.Diagram, "myDiagramDiv", {
  });
  this.myDiagram.nodeTemplate = $$(
    go.Node,
    "Horizontal",
    $$(go.TextBlock,{background:"#67B73C"},new go.Binding("text", "text")),
  );
  this.myDiagram.model = new go.GraphLinksModel(this.nodes, this.links);

handlesDragDropForMembers//是否可以监听子组的拖拽
isSubGraphExpanded//是否显示组内的其他节点
ungroupable//是否可以解除对应组的的分类
wasSubGraphExpanded//是否可以折叠展开组

this.myDiagram.groupTemplate = $$(
        go.Group,
        "Auto",
        {
          isSubGraphExpanded: false,
        },
        $$(go.Shape, "Rectangle", { fill: null, stroke: "#67B73c" }),
        $$(
          go.Panel,
          "Table",
          $$(
            go.TextBlock,
            {
              row: 0,
              column: 1,
              stroke: "#FF9900",
              textAlign: "center",
              stretch: go.GraphObject.Horizontal,
            },
            new go.Binding("text")
          )
        )
      );

this.myDiagram.groupTemplate = $$(
    go.Group,
    "Auto",
    {
      wasSubGraphExpanded:true,
    },
    $$(go.Shape, "Rectangle", { fill: null, stroke: "#67B73c" }),
    $$(
      go.Panel,
      "Table",
      $$("SubGraphExpanderButton", { row: 0, column: 0, margin: 3 }),
      $$(
        go.TextBlock,
        {
          row: 0,
          column: 1,
          stroke: "#FF9900",
          textAlign: "center",
          stretch: go.GraphObject.Horizontal,
        },
        new go.Binding("text")
      ),
      $$(
        go.Placeholder,
        { row: 1, columnSpan: 2, padding: 10, alignment: go.Spot.TopLeft },
        new go.Binding("padding", "isSubGraphExpanded", function (exp) {
          return exp ? 10 : 0;
        })
      )
    )
  );