gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
85 lines (79 loc) • 3.32 kB
HTML
<html>
<head>
<meta charset="UTF-8">
<title>Link Shifting Tool</title>
<meta name="description" content="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="../release/go.js"></script>
<script src="LinkShiftingTool.js"></script>
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
<script id="code">
function init() {
if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
var $ = go.GraphObject.make;
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
myDiagram.links.first().isSelected = true;
});
}
</script>
</head>
<body onload="init()">
<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>
</body>
</html>