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gojs/extensionsJSM/LinkShifting.html

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1<!DOCTYPE html>
2<html lang="en">
3<head>
4<meta charset="utf-8"/>
5<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
6<meta name="description" content="TypeScript: Allow the user to shift the end of a link that is connected with a rectangular node."/> 
7<link rel="stylesheet" href="../assets/css/style.css"/> 
8<!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
9<title>Link Shifting Tool</title>
10</head>
11
12<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">
    <div class="md:pl-4">
      <a class="text-white hover:text-white no-underline hover:no-underline
      font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
        <h1 class="mb-0 p-1 ">GoJS</h1>
      </a>
    </div>
    <button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">
      <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>
        <path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>
      </svg>
    </button>
    <div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20">
      <ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">
        <li class="p-1 sm:p-0"><a class="topnav-link" href="../learn/">Learn</a></li>
        <li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
        <li class="p-1 sm:p-0"><a class="topnav-link" href="../intro/">Intro</a></li>
        <li class="p-1 sm:p-0"><a class="topnav-link" href="../api/">API</a></li>
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        <li class="p-1 sm:p-0"><a class="topnav-link" href="https://forum.nwoods.com/c/gojs/11">Forum</a></li>
        <li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/contact.html"
         target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/contact.html', 'contact');">Contact</a></li>
        <li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/sales/index.html"
         target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>
      </ul>
    </div>
  </div>
  <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 -->
  
51
  <div 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.
  </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>
65
<script type="module" id="code">
  import * as go from "../release/go-module.js";
  import { LinkShiftingTool } from './LinkShiftingTool.js';
69
  if (window.goSamples) window.goSamples(); // init for these samples -- you don't need to call this
  const $ = go.GraphObject.make;
72
  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;
  });
105
  window.myDiagram = myDiagram; // Attach to the window for console debugging
</script>
  </div>
  <!-- * * * * * * * * * * * * * -->
  <!--  End of GoJS sample code  -->
</div>
112</body>
113<!--  This script is part of the gojs.net website, and is not needed to run the sample -->
114<script src="../assets/js/goSamples.js"></script>
115</html>

1	`<!DOCTYPE html>`
2	`<html lang="en">`
3	`<head>`
4	`<meta charset="utf-8"/>`
5	`<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>`
6	`<meta name="description" content="TypeScript: Allow the user to shift the end of a link that is connected with a rectangular node."/>`
7	`<link rel="stylesheet" href="../assets/css/style.css"/>`
8	`<!-- Copyright 1998-2021 by Northwoods Software Corporation. -->`
9	`<title>Link Shifting Tool</title>`
10	`</head>`
11
12	`<body>`
13	`<!-- This top nav is not part of the sample code -->`
14	`<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">`
15	`<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">`
16	`<div class="md:pl-4">`
17	`<a class="text-white hover:text-white no-underline hover:no-underline`
18	`font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">`
19	`<h1 class="mb-0 p-1 ">GoJS</h1>`
20	`</a>`
21	`</div>`
22	`<button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">`
23	`<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">`
24	`<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>`
25	`<path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>`
26	`</svg>`
27	`</button>`
28	`<div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20">`
29	`<ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">`
30	`<li class="p-1 sm:p-0"><a class="topnav-link" href="../learn/">Learn</a></li>`
31	`<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>`
32	`<li class="p-1 sm:p-0"><a class="topnav-link" href="../intro/">Intro</a></li>`
33	`<li class="p-1 sm:p-0"><a class="topnav-link" href="../api/">API</a></li>`
34	`<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/products/register.html">Register</a></li>`
35	`<li class="p-1 sm:p-0"><a class="topnav-link" href="../download.html">Download</a></li>`
36	`<li class="p-1 sm:p-0"><a class="topnav-link" href="https://forum.nwoods.com/c/gojs/11">Forum</a></li>`
37	`<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/contact.html"`
38	`target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/contact.html', 'contact');">Contact</a></li>`
39	`<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/sales/index.html"`
40	`target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>`
41	`</ul>`
42	`</div>`
43	`</div>`
44	`<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />`
45	`</nav>`
46	`<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">`
47	`<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>`
48	`<!-- * * * * * * * * * * * * * -->`
49	`<!-- Start of GoJS sample code -->`
50
51
52	`<div class="p-4 w-full">`
53	`<div id="sample">`
54	`<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>`
55	`<p>`
56	`This sample demonstrates the LinkShiftingTool, which is an extra tool that can be installed in the ToolManager to allow users`
57	`to shift the end point of the link to be anywhere along the sides of the port with which it remains connected.`
58	`</p>`
59	`<p>`
60	`This only looks good for ports that occupy the whole of a rectangular node. If you want to restrict the user's permitted`
61	`sides, you can adapt the`
62	`<code>LinkShiftingTool.doReshape</code> method to do what you want.`
63	`</p>`
64	`</div>`
65
66	`<script type="module" id="code">`
67	`import * as go from "../release/go-module.js";`
68	`import { LinkShiftingTool } from './LinkShiftingTool.js';`
69
70	`if (window.goSamples) window.goSamples(); // init for these samples -- you don't need to call this`
71	`const $ = go.GraphObject.make;`
72
73	`const myDiagram = $(go.Diagram, 'myDiagramDiv', {`
74	`'undoManager.isEnabled': true`
75	`});`
76	`myDiagram.toolManager.mouseDownTools.add($(LinkShiftingTool));`
77	`myDiagram.nodeTemplate =`
78	`$(go.Node, 'Auto', {`
79	`fromSpot: go.Spot.AllSides, toSpot: go.Spot.AllSides,`
80	`fromLinkable: true, toLinkable: true,`
81	`locationSpot: go.Spot.Center`
82	`}, new go.Binding('location', 'location', go.Point.parse).makeTwoWay(go.Point.stringify), $(go.Shape, { fill: 'lightgray' }), $(go.TextBlock, { margin: 10 }, { fromLinkable: false, toLinkable: false }, new go.Binding('text', 'key')));`
83	`myDiagram.linkTemplate =`
84	`$(go.Link, {`
85	`reshapable: true, resegmentable: true,`
86	`relinkableFrom: true, relinkableTo: true,`
87	`adjusting: go.Link.Stretch`
88	`},`
89	`// remember the (potentially) user-modified route`
90	`new go.Binding('points').makeTwoWay(),`
91	`// remember any spots modified by LinkShiftingTool`
92	`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' }));`
93	`myDiagram.model = new go.GraphLinksModel([`
94	`{ key: 'Alpha', location: '0 0' },`
95	`{ key: 'Beta', location: '0 100' }`
96	`], [`
97	`{ from: 'Alpha', to: 'Beta' }`
98	`]);`
99	`myDiagram.addDiagramListener('InitialLayoutCompleted', function (e) {`
100	`// select the Link in order to show its two additional Adornments, for shifting the ends`
101	`const firstlink = myDiagram.links.first();`
102	`if (firstlink !== null)`
103	`firstlink.isSelected = true;`
104	`});`
105
106	`window.myDiagram = myDiagram; // Attach to the window for console debugging`
107	`</script>`
108	`</div>`
109	`<!-- * * * * * * * * * * * * * -->`
110	`<!-- End of GoJS sample code -->`
111	`</div>`
112	`</body>`
113	`<!-- This script is part of the gojs.net website, and is not needed to run the sample -->`
114	`<script src="../assets/js/goSamples.js"></script>`
115	`</html>`