如何从Gojs的滚动表中删除一行？

Question

I'm using Scrolling Table in Gojs to draw links between the rows of two tables (let's say Input and Output tables). Both Input and Output tables are drawn using Scrolling-Table functionality in Gojs.

Now I want to delete a row from Output table but technically I haven't found any way to do this because each table acts a Gojs Node and when I click on a row, it selects the whole table (Node) instead of that particular row.

Here is my code:

var nodeJson;
        var $ = go.GraphObject.make;
        var inputFieldTable = [
            { ID: "001", Name: "Input 1", Text: "Err1" },
            { ID: "002", Name: "Input 2", Text: "Err2" },
            { ID: "003", Name: "Input 3", Text: "Err3" },
            { ID: "004", Name: "Input 4", Text: "Err4" },
            { ID: "005", Name: "Input 5", Text: "Err5" },
            { ID: "006", Name: "Input 6", Text: "Err6" },
            { ID: "007", Name: "Input 7", Text: "Err7" }
        ];

        var outputFieldTable = [
            { ID: "101", Name: "Output 1", Text: "Integer" },
            { ID: "102", Name: "Output 2", Text: "Integer" },
            { ID: "103", Name: "Output 3", Text: "Integer" },
            { ID: "104", Name: "Output 4", Text: "String" },
            { ID: "105", Name: "Output 5", Text: "String" },
            { ID: "106", Name: "Output 6", Text: "Double" },
            { ID: "107", Name: "Output 7", Text: "Multivalue" }
        ];
        myDiagram =
            $(go.Diagram, "myDiagramDiv",
                {
                    initialContentAlignment: go.Spot.Center,
                    "undoManager.isEnabled": true,
                    allowMove: false,
                    allowDelete: true,
                    allowCopy: false,
                    allowDragOut: false,
                    allowDrop: false
                });

        myDiagram.nodeTemplate =
            $(go.Node, "Vertical",
                {
                    selectionObjectName: "SCROLLING",
                    resizable: false, resizeObjectName: "SCROLLING",
                    portSpreading: go.Node.SpreadingNone
                },
                new go.Binding("location").makeTwoWay(),
                $(go.TextBlock,
                    { font: "bold 14px sans-serif" },
                    new go.Binding("text", "key")),
                $(go.Panel, "Auto",
                    $(go.Shape, { fill: "white" }),
                    $("ScrollingTable",
                        { stretch: go.GraphObject.Fill },
                        new go.Binding("TABLE.itemArray", "items"),
                        new go.Binding("TABLE.column", "left", function (left) { return left ? 2 : 0; }),
                        new go.Binding("desiredSize", "size").makeTwoWay(),
                        {
                            name: "SCROLLING",
                            desiredSize: new go.Size(100, 100),
                            "TABLE.itemTemplate":
                            $(go.Panel, "TableRow",
                                {
                                    defaultStretch: go.GraphObject.Horizontal,
                                    fromSpot: go.Spot.LeftRightSides,
                                    toSpot: go.Spot.LeftRightSides,
                                    fromLinkable: true,
                                    toLinkable: true,
                                    //allowDelete: true,
                                    //isGroup: true,
                                },
                                new go.Binding("portId", "Name"),
                                $(go.TextBlock, { column: 1 }, new go.Binding("text", "Name")),
                                $(go.TextBlock, { column: 2 }, new go.Binding("text", "Text"))
                            ),
                            "TABLE.defaultColumnSeparatorStroke": "gray",
                            "TABLE.defaultColumnSeparatorStrokeWidth": 0.5,
                            "TABLE.defaultRowSeparatorStroke": "gray",
                            "TABLE.defaultRowSeparatorStrokeWidth": 0.5,
                            "TABLE.defaultSeparatorPadding": new go.Margin(1, 3, 0, 3)
                        }
                    )
                )
            );

        myDiagram.model = $(go.GraphLinksModel,
            {
                linkFromPortIdProperty: "fromPort",
                linkToPortIdProperty: "toPort",
                nodeDataArray: [
                    {
                        key: "Input", left: true, location: new go.Point(0, 0), size: new go.Size(170, 100),
                        items: inputFieldTable
                    },
                    {
                        key: "Output", location: new go.Point(300, 0), size: new go.Size(170, 100),
                        items: outputFieldTable
                    }
                ]
            });

Answer 1

http://gojs.net/latest/samples/selectableFields.html demonstrates how to do that.

Basically you support highlighting individual fields and keep track of those that are highlighted within a node, effectively forming a collection of all highlighted fields. Then you can override the CommandHandler.deleteSelection method to delete selected fields, if there are any, rather than deleting selected nodes.