create-gojs-kit
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A CLI for downloading GoJS samples, extensions, and docs
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<meta name="description" content="An elaboration of the standard LinkReshapingTool that adds a broad handle to allow the user to easily drag a segment." />
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Reshaping of Orthogonal Links and Adding/Removing Segments | GoJS Diagramming Library
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<!-- Start of GoJS sample code -->
<script src="https://cdn.jsdelivr.net/npm/gojs@3.1.0"></script>
<div id="allSampleContent" class="p-4 w-full">
<script src="../extensions/OrthogonalLinkReshapingTool.js"></script>
<script id="code">
function init() {
myDiagram = new go.Diagram('myDiagramDiv', {
'undoManager.isEnabled': true,
linkReshapingTool: new OrthogonalLinkReshapingTool()
});
myDiagram.nodeTemplate =
new go.Node('Auto', {
width: 80,
height: 50,
locationSpot: go.Spot.Center
})
.add(
new go.Shape({ fill: 'lightgray' }),
new go.TextBlock({ margin: 10 })
.bind('text')
)
.bindTwoWay('location', 'location', go.Point.parse, go.Point.stringify);
myDiagram.linkTemplate =
new go.Link({
routing: go.Routing.AvoidsNodes,
reshapable: true,
resegmentable: true
})
.bindTwoWay('points')
.add(
new go.Shape({ strokeWidth: 2 })
);
myDiagram.model = new go.GraphLinksModel({
pointsDigits: 0,
nodeDataArray:
[
{ key: 1, text: 'Alpha', location: '0 0' },
{ key: 2, text: 'Beta', location: '200 0' },
{ key: 3, text: 'Gamma', location: '100 0' }
],
linkDataArray: [{ from: 1, to: 2 }]
});
myDiagram.addDiagramListener('InitialLayoutCompleted', e => {
// select the Link in order to show its two additional Adornments, for shifting the ends
myDiagram.links.first().isSelected = true;
});
}
function updateRouting() {
var routing = getRadioValue('routing');
var newRouting = routing === 'orthogonal' ? go.Routing.Orthogonal : go.Routing.AvoidsNodes;
myDiagram.startTransaction('update routing');
myDiagram.linkTemplate.routing = newRouting;
myDiagram.links.each(l => {
l.routing = newRouting;
});
myDiagram.commitTransaction('update routing');
}
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var radio = document.getElementsByName(name);
for (var i = 0; i < radio.length; i++) if (radio[i].checked) return radio[i].value;
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width: 100%; height: 600px"></div>
Routing:
<input type="radio" name="routing" id="option1" onclick="updateRouting()" value="orthogonal" />
<label for="option1">Orthogonal</label>
<input type="radio" name="routing" id="option2" onclick="updateRouting()" value="avoidsnodes" checked="checked" />
<label for="option2">AvoidsNodes</label>
<p style="margin-top: 1rem;">
This sample demonstrates the OrthogonalLinkReshapingTool that is defined in its own file, as
<a href="../extensions/OrthogonalLinkReshapingTool.js">OrthogonalLinkReshapingTool.js</a>. This tool allow users to shift the sections of orthogonal links in addition to
resegmenting them. The Diagram's <a>ToolManager.linkReshapingTool</a> and link template's <a>Part.reshapable</a> properties must be set to use this tool.
The <a>Link.resegmentable</a> property can still optionally be used.
</p>
</div>
</div>
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<!-- End of GoJS sample code -->
</div>
<div id="allTagDescriptions" class="p-4 w-full max-w-screen-xl mx-auto">
<hr/>
<h3 class="text-xl">GoJS Features in this sample</h3>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Links</h4>
<p>
The <a href="../api/symbols/Link.html" target="api">Link</a> class is used to implement a visual relationship between nodes.
Links are normally created by the presence of link data objects in the <a href="../api/symbols/GraphLinksModel.html#linkDataArray" target="api">GraphLinksModel.linkDataArray</a>
or by a parent key reference as the value of the <a href="../api/symbols/TreeModel.html#nodeParentKeyProperty" target="api">TreeModel.nodeParentKeyProperty</a> of a node data object
in a <a href="../api/symbols/TreeModel.html" target="api">TreeModel</a>.
More information can be found in the <a href="../intro/links.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#links">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Tools</h4>
<p>
<a href="../api/symbols/Tool.html" target="api">Tool</a>s handle all input events, such as mouse and keyboard interactions, in a Diagram.
There are many kinds of predefined Tool classes that implement all of the common operations that users do.
</p>
<p>
For flexibility and simplicity, all input events are canonicalized as <a href="../api/symbols/InputEvent.html" target="api">InputEvent</a>s and
redirected by the diagram to go to the <a href="../api/symbols/Diagram.html#currentTool" target="api">Diagram.currentTool</a>.
By default the Diagram.currentTool is an instance of <a href="../api/symbols/ToolManager.html" target="api">ToolManager</a> held as the <a href="../api/symbols/Diagram.html#toolManager" target="api">Diagram.toolManager</a>.
The ToolManager implements support for all mode-less tools.
The ToolManager is responsible for finding another tool that is ready to run and then making it the new current tool.
This causes the new tool to process all of the input events (mouse, keyboard, and touch) until the tool decides that it is finished,
at which time the diagram's current tool reverts back to the <a href="../api/symbols/Diagram.html#defaultTool" target="api">Diagram.defaultTool</a>, which is normally the ToolManager, again.
</p>
<p>
More information can be found in the <a href="../intro/tools.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#tools">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>GoJS Extensions</h4>
<p>
<b>GoJS</b> can be extended in a variety of ways.
The most common way to change the standard behavior is to set properties on the <a href="../api/symbols/GraphObject.html" target="api">GraphObject</a>, <a href="../api/symbols/Diagram.html" target="api">Diagram</a>, <a href="../api/symbols/CommandHandler.html" target="api">CommandHandler</a>, <a href="../api/symbols/Tool.html" target="api">Tool</a>, or <a href="../api/symbols/Layout.html" target="api">Layout</a>.
But when the desired property does not exist, you might need to override methods of CommandHandler, Tool, Layout, Link, or Node.
Methods that you can override are documented in the API reference.
Various features of GoJS can be overriden, either by replacing a method on an instance (a feature of JavaScript) or by defining a subclass.
You should not modify the prototypes of any of the <b>GoJS</b> classes.
</p>
<p>
In addition to our samples, <b>GoJS</b> provides an <strong><a href="../samples/#extensions">extensions gallery</a></strong>,
showcasing the creation of custom tools and layouts.
Those classes and samples are written in TypeScript, available at <code>../extensionsJSM/</code>,
as ECMAScript/JavaScript modules -- these use the <code>../release/go-module.js</code> library.
We recommend that you copy the files that you need into your project, so that you can adjust how they refer to the GoJS library
that you choose and so that you can include them into your own building and packaging procedures.
</p>
<p>
More information can be found in the <a href="../intro/extensions.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#extensions">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Geometry Path Strings</h4>
<p>
The <b>GoJS</b> <a href="../api/symbols/Geometry.html" target="api">Geometry</a> class controls the "shape" of a <a href="../api/symbols/Shape.html" target="api">Shape</a>,
whereas the <a href="../api/symbols/Shape.html#fill" target="api">Shape.fill</a> and <a href="../api/symbols/Shape.html#stroke" target="api">Shape.stroke</a> and other shape properties control the colors and appearance of the shape.
For common shape figures, there are predefined geometries that can be used by setting <a href="../api/symbols/Shape.html#figure" target="api">Shape.figure</a>.
However one can also define custom geometries.
</p>
<p>
One can construct any Geometry by allocating and initializing a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> of at least one <a href="../api/symbols/PathFigure.html" target="api">PathFigure</a> holding some <a href="../api/symbols/PathSegment.html" target="api">PathSegment</a>s.
But you may find that using the string representation of a Geometry is easier to write and save in a database.
Use the static method <a href="../api/symbols/Geometry.html#parse" target="api">Geometry.parse</a> or the <a href="../api/symbols/Shape.html#geometryString" target="api">Shape.geometryString</a> property to transform a geometry path string into a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> object.
</p>
<p>
More information can be found in the <a href="../intro/geometry.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#geometries">Related samples</a>
</p>
<hr>
</div>
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</body>
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