138 lines
5.1 KiB
HTML
138 lines
5.1 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>GoJS Visual Tree Using Nested Groups</title>
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<meta name="description" content="Show the visual elements of a simple diagram as a nested grouping diagram -- each Group is data bound to an element of the other Diagram." />
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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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$(go.Diagram, "myDiagramDiv",
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{ // start everything in the middle of the viewport
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initialContentAlignment: go.Spot.Center,
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"undoManager.isEnabled": true
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});
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// define the "sample" Node template
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myDiagram.nodeTemplate =
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$(go.Node, "Auto",
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$(go.Shape, "RoundedRectangle", // define the node's outer shape
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{ fill: "white", stroke: "black" },
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new go.Binding("fill", "color")),
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$(go.TextBlock, // define the node's text
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{ margin: 5 },
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new go.Binding("text", "key"))
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);
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// use the default link template
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myDiagram.model = new go.GraphLinksModel([
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{ key: "Alpha", color: "lightblue" },
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{ key: "Beta", color: "pink" }
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],[
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{ from: "Alpha", to: "Beta" }
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]);
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// Now we can initialize a Diagram that looks at the visual tree that constitutes the Diagram above.
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myVisualTree =
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$(go.Diagram, "myVisualTree",
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{
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isReadOnly: true, // do not allow users to modify or select in this view
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allowSelect: false,
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layout: $(go.TreeLayout, { nodeSpacing: 5 }) // automatically laid out as a tree
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});
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// use Groups, not regular Nodes or Links, to show relationship of GraphObjects in myDiagram
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myVisualTree.groupTemplate =
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$(go.Group, "Auto",
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{
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layout: $(go.GridLayout,
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{
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wrappingColumn: 2,
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alignment: go.GridLayout.Position,
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cellSize: new go.Size(1, 1)
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})
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},
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$(go.Shape, { fill: "rgba(99,99,99,0.1)", strokeWidth: 0.5 }),
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$(go.Panel, "Spot",
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$(go.Placeholder,
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{ padding: new go.Margin(15,5,5,5) }),
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$(go.TextBlock,
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{
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font: "bold 13px Helvetica, bold Arial, sans-serif",
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stroke: "black",
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margin: 3,
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alignment: go.Spot.Top, alignmentFocus: go.Spot.Top
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},
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// bind the text to the Diagram/Layer/Part/GraphObject converted to a string
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new go.Binding("text", "", function(x) { return x.toString(); } ))
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)
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);
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drawVisualTree();
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}
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function drawVisualTree() {
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var visualNodeDataArray = [];
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// recursively walk the visual tree, collecting objects as we go
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function traverseVisualTree(obj, parent) {
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obj.vtkey = visualNodeDataArray.length;
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visualNodeDataArray.push(obj);
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if (parent) {
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obj.parentKey = parent.vtkey;
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}
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if (obj instanceof go.Diagram) {
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var lit = obj.layers;
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while (lit.next()) traverseVisualTree(lit.value, obj);
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} else if (obj instanceof go.Layer) {
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var pit = obj.parts;
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while (pit.next()) traverseVisualTree(pit.value, obj);
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} else if (obj instanceof go.Panel) {
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var eit = obj.elements;
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while (eit.next()) traverseVisualTree(eit.value, obj);
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}
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}
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traverseVisualTree(myDiagram, null);
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myVisualTree.model =
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go.GraphObject.make(go.GraphLinksModel,
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{
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nodeKeyProperty: "vtkey",
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nodeGroupKeyProperty: "parentKey",
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// always return true so that all node data is represented by groups
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nodeIsGroupProperty: function(data) { return true; },
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nodeDataArray: visualNodeDataArray
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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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<b>myDiagram</b>, the diagram being inspected:<br />
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<div id="myDiagramDiv" style="border: 1px solid black; width: 300px; height: 200px"></div>
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<br />
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<input type="button" onclick="drawVisualTree()" value="Draw Visual Tree" />
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<br />
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<br />
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<b>myVisualTree</b>, showing the Layers, Nodes and Links that are in <b>myDiagram</b> above:<br />
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<div id="myVisualTree" style="border: 1px solid black; width: 100%; height: 400px"></div>
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<p>
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You can also try selecting, copying, and deleting parts in <b>myDiagram</b>
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and then click on "Draw Visual Tree" again to see how the visual tree in <b>myDiagram</b> changes.
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</p>
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<p>See also the <a href="visualTree.html">Visual Tree</a> sample,
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to show the same visual tree using nodes and links in a traditional tree structure.</p>
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</div>
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</body>
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</html>
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