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224 lines
9.9 KiB
HTML
Executable File
224 lines
9.9 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<title>Buttons in a Circular Adornment</title>
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<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
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<meta name="description" content="When a diagram node is selected show a selection Adornment holding buttons on which a click invokes a command or a drag starts a tool">
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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="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
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<script id="code">
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// Produce a "Button" that is shaped as the intersection of a circular sector and an annular ring.
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// The first argument is the angle at which the button will be placed relative to the center.
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// The second argument is the sweep angle over which the button will extend;
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// by default this is 90 degrees, as if there are exactly four buttons around the whole circle.
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go.GraphObject.defineBuilder("SectorButton", function(args) {
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var angle = go.GraphObject.takeBuilderArgument(args, 0.0, function(a) { return typeof a === "number"; });
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var sweep = go.GraphObject.takeBuilderArgument(args, 90.0, function(a) { return typeof a === "number"; });
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// default brushes for "Button" shape
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var buttonFillNormal = "whitesmoke";
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var buttonStrokeNormal = "gray";
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var buttonFillOver = "dodgerblue";
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var buttonStrokeOver = "blue";
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var buttonFillDisabled = "darkgray";
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function makeAnnularWedge(angle, sweep, outer, inner) {
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// the Geometry will be centered about (0,0)
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var p = new go.Point(outer, 0).rotate(angle - sweep / 2);
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var q = new go.Point(inner, 0).rotate(angle + sweep / 2);
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var geo = new go.Geometry()
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.add(new go.PathFigure(-outer, -outer)) // always make sure the Geometry includes the top left corner
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.add(new go.PathFigure(outer, outer)) // and the bottom right corner of the whole circular area
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.add(new go.PathFigure(p.x, p.y) // start at outer corner, go clockwise
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.add(new go.PathSegment(go.PathSegment.Arc, angle - sweep / 2, sweep, 0, 0, outer, outer))
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.add(new go.PathSegment(go.PathSegment.Line, q.x, q.y)) // to opposite inner corner, then anticlockwise
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.add(new go.PathSegment(go.PathSegment.Arc, angle + sweep / 2, -sweep, 0, 0, inner, inner).close()));
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return geo;
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}
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var geo = makeAnnularWedge(angle, sweep, 80, 40);
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var pt = new go.Point(60, 0).rotate(angle);
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var align = new go.Spot(0.5, 0.5, pt.x, pt.y);
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args.forEach(function(obj) { if (obj instanceof go.GraphObject) obj.alignment = align; });
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var button =
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go.GraphObject.make(go.Panel, "Spot",
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{
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isActionable: true, // needed so that the ActionTool intercepts mouse events
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enabledChanged: function(button, enabled) {
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var shape = button.findObject("ButtonBorder");
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if (shape !== null) {
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shape.fill = enabled ? button["_buttonFillNormal"] : button["_buttonFillDisabled"];
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}
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},
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// save these values for the mouseEnter and mouseLeave event handlers
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"_buttonFillNormal": buttonFillNormal,
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"_buttonStrokeNormal": buttonStrokeNormal,
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"_buttonFillOver": buttonFillOver,
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"_buttonStrokeOver": buttonStrokeOver,
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"_buttonFillDisabled": buttonFillDisabled
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},
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go.GraphObject.make(go.Shape, // the border
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{
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name: "ButtonBorder",
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fill: buttonFillNormal,
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stroke: buttonStrokeNormal,
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geometry: geo
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})
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);
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// There's no GraphObject inside the button shape -- it must be added as part of the button definition.
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// This way the object could be a TextBlock or a Shape or a Picture or arbitrarily complex Panel.
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// mouse-over behavior
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button.mouseEnter = function(e, button, prev) {
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var shape = button.findObject("ButtonBorder"); // the border Shape
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if (shape instanceof go.Shape) {
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var brush = button["_buttonFillOver"];
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button["_buttonFillNormal"] = shape.fill;
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shape.fill = brush;
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brush = button["_buttonStrokeOver"];
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button["_buttonStrokeNormal"] = shape.stroke;
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shape.stroke = brush;
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}
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};
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button.mouseLeave = function(e, button, prev) {
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var shape = button.findObject("ButtonBorder"); // the border Shape
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if (shape instanceof go.Shape) {
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shape.fill = button["_buttonFillNormal"];
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shape.stroke = button["_buttonStrokeNormal"];
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}
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};
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return button;
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});
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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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myDiagram =
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$(go.Diagram, "myDiagramDiv",
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{ // show the selection Adornment only on the first selection if it is a Node
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"ChangedSelection": function(e) {
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var node = e.diagram.selection.first();
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if (node === null) {
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var oldnode = selectionAdornment.adornedPart;
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if (oldnode) oldnode.removeAdornment("Radial");
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selectionAdornment.adornedObject = null;
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} else if (node instanceof go.Node) {
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selectionAdornment.adornedObject = node;
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node.addAdornment("Radial", selectionAdornment);
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}
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},
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"InitialLayoutCompleted": function(e) {
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// show the adornment on the "Beta" node
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e.diagram.select(e.diagram.findNodeForKey(2));
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},
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"undoManager.isEnabled": true
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});
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myDiagram.nodeTemplate =
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$(go.Node, "Auto",
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{ resizable: true },
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new go.Binding("desiredSize", "size", go.Size.parse).makeTwoWay(go.Size.stringify),
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$(go.Shape,
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{ portId: "", fromLinkable: true, toLinkable: true, cursor: "pointer" },
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new go.Binding("fill", "color")),
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$(go.TextBlock,
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{ margin: 8, editable: true },
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new go.Binding("text").makeTwoWay())
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);
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// Show a radial Adornment holding buttons when a node is selected.
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// This is not a template, so there is only one instance of it that can be shown at a time.
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// If you want every selected node to have their own copy of this adornment,
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// set Node.selectionAdornmentTemplate to this and remove the "ChangedSelection" DiagramEvent listener.
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var selectionAdornment =
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$(go.Adornment, "Spot",
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{ layerName: "Tool" }, // so that it's in front of other Adornments
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$(go.Panel, "Auto",
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$(go.Shape, { fill: null, stroke: "dodgerblue", strokeWidth: 4, pickable: false }),
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$(go.Placeholder, { margin: 2 })
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),
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$(go.Panel,
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$("SectorButton", 0, 90, // start angle, sweep angle,
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$(go.TextBlock, "New\nLink"),
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{ // start drawing a new link from this node
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click: function(e, button) {
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var node = button.part.adornedPart; // this Node
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e.diagram.clearSelection(); // hide all Adornments for clarity
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var tool = e.diagram.toolManager.linkingTool; // the LinkingTool
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tool.startObject = node.port; // the default port of the Node
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e.diagram.currentTool = tool; // start the LinkingTool
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tool.doActivate(); // and activate it
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}
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}),
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$("SectorButton", 90, 90,
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$(go.Shape, { geometryString: "F1 M29.181 19.070c-1.679-2.908-0.669-6.634 2.255-8.328l-3.145-5.447c-0.898 0.527-1.943 0.829-3.058 0.829-3.361 0-6.085-2.742-6.085-6.125h-6.289c0.008 1.044-0.252 2.103-0.811 3.070-1.679 2.908-5.411 3.897-8.339 2.211l-3.144 5.447c0.905 0.515 1.689 1.268 2.246 2.234 1.676 2.903 0.672 6.623-2.241 8.319l3.145 5.447c0.895-0.522 1.935-0.82 3.044-0.82 3.35 0 6.067 2.725 6.084 6.092h6.289c-0.003-1.034 0.259-2.080 0.811-3.038 1.676-2.903 5.399-3.894 8.325-2.219l3.145-5.447c-0.899-0.515-1.678-1.266-2.232-2.226zM16 22.479c-3.578 0-6.479-2.901-6.479-6.479s2.901-6.479 6.479-6.479c3.578 0 6.479 2.901 6.479 6.479s-2.901 6.479-6.479 6.479z" }),
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{
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click: function(e, button) {
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// maybe use a DataInspector?
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alert("Show Settings for " + button.part.adornedPart.data.text);
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}
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}),
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$("SectorButton", 180, 90,
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$(go.TextBlock, "?", { font: "bold 14pt sans-serif" }),
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{
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click: function(e, button) {
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// maybe show some info in HTML?
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alert("Show Information about " + button.part.adornedPart.data.text);
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}
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}),
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$("SectorButton", 270, 90,
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$(go.Shape, "XLine", { stroke: "red", strokeWidth: 4, width: 16, height: 16 }),
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{
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click: function(e, button) {
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// this is different from CommandHandler.deleteSelection because this
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// only deletes the one node, not all selected parts
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e.diagram.commit(function(d) {
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d.remove(button.part.adornedPart);
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}, "deleted node");
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}
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})
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)
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);
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myDiagram.model = new go.GraphLinksModel(
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[
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{ key: 1, text: "Alpha", color: "lightblue" },
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{ key: 2, text: "Beta", color: "orange" },
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{ key: 3, text: "Gamma", color: "lightgreen" },
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{ key: 4, text: "Delta", color: "pink" },
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],
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[
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{ from: 1, to: 2 },
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{ from: 1, to: 3 },
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{ from: 2, to: 2 },
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{ from: 3, to: 4 },
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{ from: 4, to: 1 }
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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:500px"></div>
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<p>
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Selecting a Node shows not only a dodgerblue rectangle around the selected node,
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but also a circular arrangement of Buttons.
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The red "X" deletes the node.
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The "?" and cog/gear Shape currently just call `alert`, but they could do anything that you want.
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The "New Link" starts the <a>LinkingTool</a> drawing a new Link from that Node.
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</p>
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</div>
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</body>
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</html> |