94 lines
3.7 KiB
HTML
94 lines
3.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Minimal XML GoJS Sample</title>
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<meta name="description" content="The Minimal sample, loading the model from an XML data source and binding to XML DOM elements." />
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<!-- Copyright 1998-2017 by Northwoods Software Corporation. -->
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<meta charset="UTF-8">
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<script src="../assets/js/jquery.min.js"></script>
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<script src="../release/go.js"></script>
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<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
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<script id="code">
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function init() {
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if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
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var $$ = go.GraphObject.make; // for conciseness in defining templates, avoid $ due to jQuery
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myDiagram = $$(go.Diagram, "myDiagramDiv", // create a Diagram for the DIV HTML element
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{
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initialContentAlignment: go.Spot.Center // center the content
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});
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// define a simple Node template
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myDiagram.nodeTemplate =
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$$(go.Node, "Auto", // the Shape will go around the TextBlock
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$$(go.Shape, "RoundedRectangle", { strokeWidth: 0},
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// Shape.fill is bound to Node.data.color
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new go.Binding("fill", "color")),
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$$(go.TextBlock,
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{ margin: 8 }, // some room around the text
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// TextBlock.text is bound to Node.data.key
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new go.Binding("text", "key"))
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);
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// but use the default Link template, by not setting Diagram.linkTemplate
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// The previous initialization is the same as the minimal.html sample.
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// Here we request XML-format text data from the server, in this case from a static file.
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jQuery.ajax({
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url: "minimal.xml",
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success: load,
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dataType: "xml"
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});
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}
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function load(x) {
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// ought to handle parse errors here:
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var xml = jQuery(x.xml ? x.xml : x);
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// this does direct binding to XML DOM elements:
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myDiagram.model = new go.GraphLinksModel(xml.find("node").toArray(), xml.find("link").toArray());
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// such binding is read-only at the current time
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}
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</script>
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</head>
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<body onload="init()">
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<div id="sample">
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<p>Minimal <b>GoJS</b> Sample, reading XML data</p>
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<!-- The DIV for the Diagram needs an explicit size or else we won't see anything.
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Also add a border to help see the edges. -->
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<div id="myDiagramDiv" style="border: solid 1px black; width:400px; height:400px"></div>
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<p>
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This is just like the <a href="minimal.html">Minimal</a> sample, but this reads XML data from the server.
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</p>
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<p>
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Here are the contents of the <code>minimal.xml</code> file:
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</p>
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<pre>
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<?xml version="1.0" encoding="UTF-8"?>
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<graph>
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<node key="Alpha" color="lightblue" />
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<node key="Beta" color="orange" />
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<node key="Gamma" color="lightgreen" />
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<node key="Delta" color="pink" />
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<link from="Alpha" to="Beta" />
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<link from="Alpha" to="Gamma" />
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<link from="Beta" to="Beta" />
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<link from="Gamma" to="Delta" />
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<link from="Delta" to="Alpha" />
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</graph>
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</pre>
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<p>
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This sample uses direct binding to XML DOM elements --
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the Model's <a>Model.nodeDataArray</a> is actually an XML DOM object,
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and each Node has data <a>Binding</a>s directly to XML DOM elements.
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</p>
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<p>
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Such direct binding at the current time only supports read-only models.
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If you want to read <i>and write</i> XML you need to use regular JavaScript Objects and
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implement your own persistence from and to XML.
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Of course even if <b>GoJS</b> supported updating XML DOM directly,
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this "minimal" sample has no way to update the data on the server.
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</p>
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</div>
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</body>
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</html> |