GoJs中使用HTML方法示例

//data
nodes: [
    { key: "1", color: "#99FFFF", text: "三国", figure: "Rectangle" },
    { key: "1-1", color: "#FF0000", text: "魏", figure: "Circle" },
    { key: "1-2", color: "#FFFF66", text: "蜀", figure: "Circle" },
    { key: "1-3", color: "#0000FF", text: "吴", figure: "Circle" },
],
links: [
    {
      from: "1",
      to: "1-1",
    },
    {
      from: "1",
      to: "1-2",
    },
    {
      from: "1",
      to: "1-3",
    },
],
//methods
this.myDiagram.nodeTemplate = $$(
go.Node,
"Vertical",
{
    toolTip: myToolTip
},
$$(
  go.Shape,
  "Circle",
  { width: 30, height: 30, name: "ICON" },
  // new go.AnimationTrigger('stroke'),
  new go.Binding("fill", "color"),
  new go.Binding("figure", "figure")
),
$$(go.TextBlock, new go.Binding("text", "text"))
);
showToolTip(obj, diagram) {
    let toolTipDIV = document.getElementById('toolTipDIV');
    let pt = diagram.lastInput.viewPoint;
    toolTipDIV.style.left = (pt.x + 10) + "px";
    toolTipDIV.style.top = (pt.y + 10) + "px";
    document.getElementById('toolTipParagraph').textContent = "此节点的key为" + obj.data.key;
    toolTipDIV.style.display = "block";
},
hideToolTip(diagram) {
    let toolTipDIV = document.getElementById('toolTipDIV');
    toolTipDIV.style.display = "none";
}

{
    toolTip: myToolTip,
    contextMenu:myToolTip
}

let customEditor = new go.HTMLInfo();
let customSelectBox = document.createElement("select");
customEditor.show = function(textBlock, diagram, tool) {
if (!(textBlock instanceof go.TextBlock)) return;
customSelectBox.innerHTML = "";
let list = ['三国','魏','蜀','吴'];
for (let i = 0; i < list.length; i++) {
    let op = document.createElement("option");
    op.text = list[i];
    op.value = list[i];
    customSelectBox.add(op, null);
}
customSelectBox.value = textBlock.text;
customSelectBox.addEventListener("keydown", function(e) {
    var keynum = e.which;
    if (keynum == 13) { 
    tool.acceptText(go.TextEditingTool.Enter);
    return;
    } else if (keynum == 9) { 
    tool.acceptText(go.TextEditingTool.Tab);
    e.preventDefault();
    return false;
    } else if (keynum === 27) { 
    tool.doCancel();
    if (tool.diagram) tool.diagram.focus();
    }
}, false);
let loc = textBlock.getDocumentPoint(go.Spot.TopLeft);
let pos = _this.myDiagram.transformDocToView(loc);
customSelectBox.style.left = pos.x + "px";
customSelectBox.style.top  = pos.y+ 30 + "px";
customSelectBox.style.position = 'absolute';
customSelectBox.style.zIndex = 100; 
_this.myDiagram.div.appendChild(customSelectBox);
}
customEditor.hide = function(diagram, tool) {
    diagram.div.removeChild(customSelectBox);
}
customEditor.valueFunction = function() { return customSelectBox.value; }
this.myDiagram.toolManager.textEditingTool.defaultTextEditor = customEditor;