simonsarris · April 30, 2014 13:54
diff --git a/nodeKeyPropertyandmakeUniqueKeyFunction.html b/nodeKeyPropertyandmakeUniqueKeyFunction.html
 <!doctype html>
 <html>
 <head>
 <title>Minimal GoJS Sample</title>
 <!-- Copyright 1998-2014 by Northwoods Software Corporation. -->
 <link href="goSamples.css" rel="stylesheet" type="text/css"/>
 <script src="http://www.gojs.net/latest/release/go.js"></script>
 <script id="code">
  function init() {
    var $ = go.GraphObject.make;  // for conciseness in defining templates

    myDiagram = $(go.Diagram, "myDiagram",  // create a Diagram for the DIV HTML element
                  {
                    initialContentAlignment: go.Spot.Center,  // center the content
                    "undoManager.isEnabled": true,  // enable undo & redo
                    "clickCreatingTool.archetypeNodeData": { color: "lime" }
                  });

    // define a simple Node template
    myDiagram.nodeTemplate =
      $(go.Node, "Auto",  // the Shape will go around the TextBlock
        $(go.Shape, "RoundedRectangle",
          // Shape.fill is bound to Node.data.color
          new go.Binding("fill", "color")),
        $(go.TextBlock,
          { margin: 3 },  // some room around the text
          // TextBlock.text is bound to Node.data.id
          new go.Binding("text", "id"))
      );


    var currentID = 0;
    // returns a unique key
    function makeUnique(model, nodedata) {
      // really simple, just returns a number (skipping odd numbers)
      if (currentID % 2 !== 0) currentID++;
      return currentID++;
    }

    // create the model data that will be represented by Nodes and Links
    myDiagram.model = $(go.GraphLinksModel, {
      nodeKeyProperty: "id",
      makeUniqueKeyFunction: makeUnique,
      nodeDataArray:
      [
        { id: "Alpha", color: "lightblue" },
        { id: "Beta", color: "orange" },
        { id: "Gamma", color: "lightgreen" },
        { id: "Delta", color: "pink" }
      ],
      linkDataArray:
        [
          { from: "Alpha", to: "Beta" },
          { from: "Alpha", to: "Gamma" },
          { from: "Beta", to: "Beta" },
          { from: "Gamma", to: "Delta" },
          { from: "Delta", to: "Alpha" }
        ] }
    );

  }

  // Show the diagram's model in JSON format that the user may edit
  function save() {
    myDiagram.model.nodeKeyProperty = "id";
    document.getElementById("mySavedModel").value = myDiagram.model.toJson();
    myDiagram.isModified = false;
  }
  function load() {
    myDiagram.model = go.Model.fromJson(document.getElementById("mySavedModel").value);
  }

 </script>
 </head>
 <body onload="init()">
 <div id="sample">
  <p>Minimal <b>GoJS</b> Sample</p>
  <!-- The DIV for the Diagram needs an explicit size or else we won't see anything.
       Also add a border to help see the edges. -->
  <div id="myDiagram" style="border: solid 1px black; width:400px; height:400px"></div>
  <button id="SaveButton" onclick="save()">Save</button>
  <button onclick="load()">Load</button>
  <textarea id="mySavedModel" style="width:100%;height:300px">
 Press save
  </textarea>
 </div>
 </body>
 </html>
	<!doctype html>
	<html>
	<head>
	<title>Minimal GoJS Sample</title>
	<!-- Copyright 1998-2014 by Northwoods Software Corporation. -->
	<link href="goSamples.css" rel="stylesheet" type="text/css"/>
	<script src="http://www.gojs.net/latest/release/go.js"></script>
	<script id="code">
	function init() {
	var $ = go.GraphObject.make; // for conciseness in defining templates

	myDiagram = $(go.Diagram, "myDiagram", // create a Diagram for the DIV HTML element
	{
	initialContentAlignment: go.Spot.Center, // center the content
	"undoManager.isEnabled": true, // enable undo & redo
	"clickCreatingTool.archetypeNodeData": { color: "lime" }
	});

	// define a simple Node template
	myDiagram.nodeTemplate =
	$(go.Node, "Auto", // the Shape will go around the TextBlock
	$(go.Shape, "RoundedRectangle",
	// Shape.fill is bound to Node.data.color
	new go.Binding("fill", "color")),
	$(go.TextBlock,
	{ margin: 3 }, // some room around the text
	// TextBlock.text is bound to Node.data.id
	new go.Binding("text", "id"))
	);


	var currentID = 0;
	// returns a unique key
	function makeUnique(model, nodedata) {
	// really simple, just returns a number (skipping odd numbers)
	if (currentID % 2 !== 0) currentID++;
	return currentID++;
	}

	// create the model data that will be represented by Nodes and Links
	myDiagram.model = $(go.GraphLinksModel, {
	nodeKeyProperty: "id",
	makeUniqueKeyFunction: makeUnique,
	nodeDataArray:
	[
	{ id: "Alpha", color: "lightblue" },
	{ id: "Beta", color: "orange" },
	{ id: "Gamma", color: "lightgreen" },
	{ id: "Delta", color: "pink" }
	],
	linkDataArray:
	[
	{ from: "Alpha", to: "Beta" },
	{ from: "Alpha", to: "Gamma" },
	{ from: "Beta", to: "Beta" },
	{ from: "Gamma", to: "Delta" },
	{ from: "Delta", to: "Alpha" }
	] }
	);

	}

	// Show the diagram's model in JSON format that the user may edit
	function save() {
	myDiagram.model.nodeKeyProperty = "id";
	document.getElementById("mySavedModel").value = myDiagram.model.toJson();
	myDiagram.isModified = false;
	}
	function load() {
	myDiagram.model = go.Model.fromJson(document.getElementById("mySavedModel").value);
	}

	</script>
	</head>
	<body onload="init()">
	<div id="sample">
	<p>Minimal <b>GoJS</b> Sample</p>
	<!-- The DIV for the Diagram needs an explicit size or else we won't see anything.
	Also add a border to help see the edges. -->
	<div id="myDiagram" style="border: solid 1px black; width:400px; height:400px"></div>
	<button id="SaveButton" onclick="save()">Save</button>
	<button onclick="load()">Load</button>
	<textarea id="mySavedModel" style="width:100%;height:300px">
	Press save
	</textarea>
	</div>
	</body>
	</html>