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176 lines
6.9 KiB
HTML
Executable File
176 lines
6.9 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<title>Adding a Custom Node to a Palette</title>
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<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
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<meta name="description" content="An example of having the user customize a Palette by adding copies of Diagram nodes to the Palette's Model." />
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<script src="../release/go.js"></script>
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<script src="../extensions/Figures.js"></script>
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<link rel='stylesheet' href='../extensions/DataInspector.css' />
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<script src="../extensions/DataInspector.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;
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// initialize main Diagram
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myDiagram =
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$(go.Diagram, "myDiagramDiv",
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{
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"undoManager.isEnabled": true
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});
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myDiagram.nodeTemplate =
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$(go.Node, "Auto",
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{ locationSpot: go.Spot.Center },
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new go.Binding("location", "location", go.Point.parse).makeTwoWay(go.Point.stringify),
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$(go.Shape, "Circle",
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{
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fill: "white", stroke: "gray", strokeWidth: 2,
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portId: "", fromLinkable: true, toLinkable: true,
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fromLinkableDuplicates: true, toLinkableDuplicates: true,
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fromLinkableSelfNode: true, toLinkableSelfNode: true
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},
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new go.Binding("stroke", "color"),
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new go.Binding("figure")),
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$(go.TextBlock,
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{
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margin: new go.Margin(5, 5, 3, 5), font: "10pt sans-serif",
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minSize: new go.Size(16, 16), maxSize: new go.Size(120, NaN),
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textAlign: "center", editable: true
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},
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new go.Binding("text").makeTwoWay())
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);
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// initialize Palette
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myPalette =
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$(go.Palette, "myPaletteDiv",
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{
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nodeTemplate: myDiagram.nodeTemplate,
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contentAlignment: go.Spot.Center,
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layout:
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$(go.GridLayout,
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{ wrappingColumn: 1, cellSize: new go.Size(2, 2) }),
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"ModelChanged": function(e) { // just for demonstration purposes,
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if (e.isTransactionFinished) { // show the model data in the page's TextArea
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document.getElementById("mySavedPaletteModel").textContent = e.model.toJson();
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}
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}
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});
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// now add the initial contents of the Palette
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myPalette.model.nodeDataArray = [
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{ text: "Circle", color: "blue", figure: "Circle" },
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{ text: "Square", color: "purple", figure: "Square" },
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{ text: "Ellipse", color: "orange", figure: "Ellipse" },
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{ text: "Rectangle", color: "red", figure: "Rectangle" },
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{ text: "Rounded\nRectangle", color: "green", figure: "RoundedRectangle" },
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{ text: "Triangle", color: "purple", figure: "Triangle" },
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];
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// initialize Overview
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myOverview =
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$(go.Overview, "myOverviewDiv",
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{
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observed: myDiagram,
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contentAlignment: go.Spot.Center
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});
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var inspector = new Inspector('myInspectorDiv', myDiagram,
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{
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// uncomment this line to only inspect the named properties below instead of all properties on each object:
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// includesOwnProperties: false,
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properties: {
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"text": {},
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// key would be automatically added for nodes, but we want to declare it read-only also:
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"key": { readOnly: true, show: Inspector.showIfPresent },
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// color would be automatically added for nodes, but we want to declare it a color also:
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"color": { type: 'color' },
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"figure": {}
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}
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});
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load();
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}
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// save a model to and load a model from Json text, displayed below the Diagram
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function save() {
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var str = myDiagram.model.toJson();
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document.getElementById("mySavedModel").value = str;
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}
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function load() {
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var str = document.getElementById("mySavedModel").value;
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myDiagram.model = go.Model.fromJson(str);
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}
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function addToPalette() {
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var node = myDiagram.selection.filter(function(p) { return p instanceof go.Node; }).first();
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if (node !== null) {
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myPalette.startTransaction();
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var item = myPalette.model.copyNodeData(node.data);
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myPalette.model.addNodeData(item);
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myPalette.commitTransaction("added item to palette");
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}
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}
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// The user cannot delete selected nodes in the Palette with the Delete key or Control-X,
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// but they can if they do so programmatically.
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function removeFromPalette() {
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myPalette.commandHandler.deleteSelection();
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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 style="width:100%; white-space:nowrap;">
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<span style="display: inline-block; vertical-align: top; padding: 2px; width:140px">
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<div id="myPaletteDiv" style="background-color: whitesmoke; border: solid 1px black; height: 400px"></div>
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<div id="myOverviewDiv" style="border: solid 1px black; height: 100px"></div>
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</span>
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<span style="display: inline-block; vertical-align: top; padding: 2px; width:500px">
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<div id="myDiagramDiv" style="border: solid 1px black; height: 500px"></div>
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</span>
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<span style="display: inline-block; vertical-align: top; padding: 2px; width:200px">
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<div id="myInspectorDiv" class="inspector"></div>
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</span>
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</div>
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<p>
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This sample supports the normal kind of drag-and-drop from a <a>Palette</a> to a <a>Diagram</a>.
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The Data <a>Inspector</a> allows you to edit the properties of a selected node in the diagram.
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</p>
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<p>
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This sample also supports dynamically adding a copy of a selected node in the diagram to the
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palette by the "Add To Palette" button.
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See the current state of the palette's model in the top textarea.
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The palette is <a>Diagram.isReadOnly</a>, so the user cannot delete selected nodes from the palette.
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But the "Delete From Palette" button removes any selected nodes from the palette.
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</p>
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<div>
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<button onclick="addToPalette()">Add To Palette</button>
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<button onclick="removeFromPalette()">Delete From Palette</button>
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Palette model:
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</div>
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<textarea id="mySavedPaletteModel" style="width:100%;height:200px"></textarea>
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<div>
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<button id="loadModel" onclick="load()">Load</button>
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<button id="saveModel" onclick="save()">Save</button>
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Diagram model:
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</div>
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<textarea id="mySavedModel" style="width:100%;height:200px">
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{ "class": "go.GraphLinksModel",
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"nodeDataArray": [
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{ "key": 1, "text": "hello", "figure":"Circle", "color":"green", "location":"0 0" },
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{ "key": 2, "text": "world", "figure":"Rectangle", "color":"red", "location":"100 0" }
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],
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"linkDataArray": [
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{ "from":1, "to":2 }
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]}
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</textarea>
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</div>
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</body>
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</html>
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