gojs
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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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HTML
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
<meta name="description" content="TypeScript: Allow the user to shift the end of a link that is connected with a rectangular node."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2023 by Northwoods Software Corporation. -->
<title>Link Shifting Tool</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">
<div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
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font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
<h1 class="my-0 p-1 ">GoJS</h1>
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<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">
<path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path>
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<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />
</nav>
<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<div id="allSampleContent" class="p-4 w-full">
<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.
This extension tool is defined in its own file, as <a href="LinkShiftingTool.js" target="_blank">LinkShiftingTool.js</a>.
</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 = new 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', 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>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>