gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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HTML
<html>
<head>
<meta charset="UTF-8">
<title>Link Shifting Tool</title>
<meta name="description" content="TypeScript: Allow the user to shift the end of a link that is connected with a rectangular node." />
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
</head>
<body>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
<p>
This sample demonstrates the LinkShiftingTool, which is an extra tool that can be installed in the ToolManager to allow users
to shift the end point of the link to be anywhere along the sides of the port with which it remains connected.
</p>
<p>
This only looks good for ports that occupy the whole of a rectangular node. If you want to restrict the user's permitted
sides, you can adapt the
<code>LinkShiftingTool.doReshape</code> method to do what you want.
</p>
</div>
<script type="module" id="code">
import * as go from "../release/go-module.js";
import { LinkShiftingTool } from './LinkShiftingTool.js';
if (window.goSamples) window.goSamples(); // init for these samples -- you don't need to call this
const $ = go.GraphObject.make;
const myDiagram = $(go.Diagram, 'myDiagramDiv', {
'undoManager.isEnabled': true
});
myDiagram.toolManager.mouseDownTools.add($(LinkShiftingTool));
myDiagram.nodeTemplate =
$(go.Node, 'Auto', {
fromSpot: go.Spot.AllSides, toSpot: go.Spot.AllSides,
fromLinkable: true, toLinkable: true,
locationSpot: go.Spot.Center
}, new go.Binding('location', 'location', go.Point.parse).makeTwoWay(go.Point.stringify), $(go.Shape, { fill: 'lightgray' }), $(go.TextBlock, { margin: 10 }, { fromLinkable: false, toLinkable: false }, new go.Binding('text', 'key')));
myDiagram.linkTemplate =
$(go.Link, {
reshapable: true, resegmentable: true,
relinkableFrom: true, relinkableTo: true,
adjusting: go.Link.Stretch
},
// remember the (potentially) user-modified route
new go.Binding('points').makeTwoWay(),
// remember any spots modified by LinkShiftingTool
new go.Binding('fromSpot', 'fromSpot', go.Spot.parse).makeTwoWay(go.Spot.stringify), new go.Binding('toSpot', 'toSpot', go.Spot.parse).makeTwoWay(go.Spot.stringify), $(go.Shape), $(go.Shape, { toArrow: 'Standard' }));
myDiagram.model = new go.GraphLinksModel([
{ key: 'Alpha', location: '0 0' },
{ key: 'Beta', location: '0 100' }
], [
{ from: 'Alpha', to: 'Beta' }
]);
myDiagram.addDiagramListener('InitialLayoutCompleted', function (e) {
// select the Link in order to show its two additional Adornments, for shifting the ends
const firstlink = myDiagram.links.first();
if (firstlink !== null)
firstlink.isSelected = true;
});
window.myDiagram = myDiagram; // Attach to the window for console debugging
</script>
</body>
</html>