259 lines
8.9 KiB
HTML
259 lines
8.9 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>Shared States</title>
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<meta name="description" content="A diagram where nodes may belong to multiple groups." />
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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="../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
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myDiagram =
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$(go.Diagram, "myDiagramDiv", // must name or refer to the DIV HTML element
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{
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// start everything in the middle of the viewport
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initialContentAlignment: go.Spot.Center,
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allowCopy: false,
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allowDelete: false,
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draggingTool: $(CustomDraggingTool),
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layout: $(CustomLayout),
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// enable undo & redo
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"undoManager.isEnabled": true
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});
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// define the Node template
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myDiagram.nodeTemplate =
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$(go.Node, "Auto",
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new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
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// define the node's outer shape, which will surround the TextBlock
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$(go.Shape, "RoundedRectangle",
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{
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fill: "rgb(254, 201, 0)", stroke: "black", parameter1: 20, // the corner has a large radius
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portId: "", fromSpot: go.Spot.AllSides, toSpot: go.Spot.AllSides
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}),
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$(go.TextBlock,
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new go.Binding("text", "text").makeTwoWay())
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);
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myDiagram.nodeTemplateMap.add("Super",
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$(go.Node, "Auto",
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{ locationObjectName: "BODY" },
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$(go.Shape, "RoundedRectangle",
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{
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fill: "rgba(128, 128, 64, 0.5)", strokeWidth: 1.5, parameter1: 20,
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spot1: go.Spot.TopLeft, spot2: go.Spot.BottomRight, minSize: new go.Size(30, 30)
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}),
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$(go.Panel, "Vertical",
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{ margin: 10 },
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$(go.TextBlock,
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{ font: "bold 10pt sans-serif", margin: new go.Margin(0, 0, 5, 0) },
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new go.Binding("text")),
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$(go.Shape,
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{ name: "BODY", opacity: 0 })
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)
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));
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// replace the default Link template in the linkTemplateMap
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myDiagram.linkTemplate =
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$(go.Link, // the whole link panel
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{ routing: go.Link.Orthogonal, corner: 10 },
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$(go.Shape, // the link shape
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{ strokeWidth: 1.5 }),
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$(go.Shape, // the arrowhead
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{ toArrow: "Standard", stroke: null })
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);
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// read in the JSON-format data from the "mySavedModel" element
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load();
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}
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// A custom layout that sizes each "Super" node to be big enough to cover all of it member nodes
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function CustomLayout() {
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go.Layout.call(this);
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}
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go.Diagram.inherit(CustomLayout, go.Layout);
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/** @override */
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CustomLayout.prototype.doLayout = function(coll) {
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coll = this.collectParts(coll);
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var supers = new go.Set(go.Node);
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coll.each(function(p) {
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if (p instanceof go.Node && p.category === "Super") supers.add(p);
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});
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function membersOf(sup, diag) {
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var set = new go.Set(go.Part);
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var arr = sup.data._members;
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for (var i = 0; i < arr.length; i++) {
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var d = arr[i];
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set.add(diag.findNodeForData(d));
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}
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return set;
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}
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function isReady(sup, supers, diag) {
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var arr = sup.data._members;
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for (var i = 0; i < arr.length; i++) {
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var d = arr[i];
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if (d.category !== "Super") continue;
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var n = diag.findNodeForData(d);
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if (supers.contains(n)) return false;
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}
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return true;
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}
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// implementations of doLayout that do not make use of a LayoutNetwork
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// need to perform their own transactions
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this.diagram.startTransaction("Custom Layout");
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while (supers.count > 0) {
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var ready = null;
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var it = supers.iterator;
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while (it.next()) {
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if (isReady(it.value, supers, this.diagram)) {
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ready = it.value;
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break;
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}
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}
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supers.remove(ready);
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var b = this.diagram.computePartsBounds(membersOf(ready, this.diagram));
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ready.location = b.position;
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var body = ready.findObject("BODY");
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if (body) body.desiredSize = b.size;
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}
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this.diagram.commitTransaction("Custom Layout");
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};
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// end CustomLayout
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// Define a custom DraggingTool
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function CustomDraggingTool() {
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go.DraggingTool.call(this);
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}
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go.Diagram.inherit(CustomDraggingTool, go.DraggingTool);
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/** @override */
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CustomDraggingTool.prototype.moveParts = function(parts, offset, check) {
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go.DraggingTool.prototype.moveParts.call(this, parts, offset, check);
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this.diagram.layoutDiagram(true);
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};
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/** @override */
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CustomDraggingTool.prototype.computeEffectiveCollection = function(parts) {
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var coll = new go.Set(go.Part).addAll(parts);
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var tool = this;
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parts.each(function(p) {
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tool.walkSubTree(p, coll);
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});
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return go.DraggingTool.prototype.computeEffectiveCollection.call(this, coll);
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};
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// Find other attached nodes.
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CustomDraggingTool.prototype.walkSubTree = function(sup, coll) {
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if (sup === null) return;
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coll.add(sup);
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if (sup.category !== "Super") return;
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// recurse through this super state's members
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var model = this.diagram.model;
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var mems = sup.data._members;
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if (mems) {
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for (var i = 0; i < mems.length; i++) {
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var mdata = mems[i];
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this.walkSubTree(this.diagram.findNodeForData(mdata), coll);
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}
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}
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};
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// end CustomDraggingTool class
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// Show the diagram's model in JSON format
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function save() {
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document.getElementById("mySavedModel").value = myDiagram.model.toJson();
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myDiagram.isModified = false;
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}
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function load() {
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myDiagram.model = go.Model.fromJson(document.getElementById("mySavedModel").value);
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// make sure all data have up-to-date "members" collections
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// this does not prevent any "cycles" of membership, which would result in undefined behavior
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var arr = myDiagram.model.nodeDataArray;
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for (var i = 0; i < arr.length; i++) {
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var data = arr[i];
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var supers = data.supers;
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if (supers) {
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for (var j = 0; j < supers.length; j++) {
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var sdata = myDiagram.model.findNodeDataForKey(supers[j]);
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if (sdata) {
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// update _supers to be an Array of references to node data
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if (!data._supers) {
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data._supers = [sdata];
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} else {
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data._supers.push(sdata);
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}
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// update _members to be an Array of references to node data
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if (!sdata._members) {
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sdata._members = [data];
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} else {
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sdata._members.push(data);
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}
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}
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}
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}
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}
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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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<div id="myDiagramDiv" style="border: solid 1px black; width: 100%; height: 400px"></div>
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<p>
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This demonstrates the ability to simulate having nodes be members of multiple "groups".
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Regular <a>Group</a>s only support a single <a>Part.containingGroup</a> for nodes.
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This sample does not make use of <a>Group</a>s at all, but simulates one possible "grouping" relationship
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using a custom <a>Layout</a> and a custom <a>DraggingTool</a>.
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</p>
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<p>
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The CustomLayout assumes regular nodes already have real locations, and only assigns <a>Part.location</a> to "Super" nodes.
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It also sets the <a>GraphObject.desiredSize</a> on the "BODY" element of each "Super" node, based on the area occupied by all of its member nodes.
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The CustomDraggingTool overrides the <a>DraggingTool.computeEffectiveCollection</a> method to determine what nodes to drag around.
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</p>
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<p>
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This sample does not support dynamic restructuring of the relationships in the graph.
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</p>
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<button id="SaveButton" onclick="save()">Save</button>
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<button onclick="load()">Load</button>
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Diagram Model saved in JSON format:
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<br />
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<textarea id="mySavedModel" style="width:100%;height:300px">
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{ "nodeDataArray": [
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{ "key": -1, "text": "Operating", "category": "Super" },
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{ "key": -2, "text": "Drying", "category": "Super", "supers": [-1] },
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{ "key": -3, "text": "Non Drying", "category": "Super" },
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{ "key": 1, "loc": "100 100", "text": "Starting.End", "supers": [-2] },
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{ "key": 2, "loc": "250 100", "text": "Running", "supers": [-2] },
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{ "key": 3, "loc": "100 200", "text": "Starting.Init", "supers": [-1, -3] },
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{ "key": 4, "loc": "250 200", "text": "Washing", "supers": [-1, -3] },
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{ "key": 5, "loc": "100 300", "text": "Stopped", "supers": [-3] },
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{ "key": 6, "loc": "250 300", "text": "Stopping", "supers": [-3] }
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],
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"linkDataArray": [
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{ "from": 1, "to": 2 },
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{ "from": 3, "to": 1 },
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{ "from": 4, "to": 2 },
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{ "from": -2, "to": 4 },
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{ "from": 5, "to": 3 },
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{ "from": 6, "to": 5 },
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{ "from": -1, "to": 5 }
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]
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}
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</textarea></div>
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</body>
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</html>
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