gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
186 lines (175 loc) • 9.3 kB
HTML
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
<meta name="description" content="Custom policy for collapsing and expanding subtrees, different than TreeExpanderButton."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2023 by Northwoods Software Corporation. -->
<title>Different Criteria for Hiding "Children" of Collapsed Nodes</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">
<div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
<div class="md:pl-4">
<a class="text-white hover:text-white no-underline hover:no-underline
font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
<h1 class="my-0 p-1 ">GoJS</h1>
</a>
</div>
<button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">
<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">
<path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path>
<path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>
</svg>
</button>
<div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20">
<ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">
<li class="p-1 sm:p-0"><a class="topnav-link" href="../learn/">Learn</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../intro/">Intro</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../api/">API</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/products/register.html">Register</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="../download.html">Download</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://forum.nwoods.com/c/gojs/11">Forum</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/contact.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/contact.html', 'contact');">Contact</a></li>
<li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/sales/index.html"
target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>
</ul>
</div>
</div>
<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />
</nav>
<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="../release/go.js"></script>
<div id="allSampleContent" class="p-4 w-full">
<script id="code">
function init() {
// Since 2.2 you can also author concise templates with method chaining instead of GraphObject.make
// For details, see https://gojs.net/latest/intro/buildingObjects.html
const $ = go.GraphObject.make;
myDiagram =
new go.Diagram("myDiagramDiv",
{
padding: 10,
layout: $(go.LayeredDigraphLayout,
{
direction: 90,
layeringOption: go.LayeredDigraphLayout.LayerLongestPathSource,
alignOption: go.LayeredDigraphLayout.AlignAll
}),
"undoManager.isEnabled": true
});
myDiagram.nodeTemplate =
$(go.Node, go.Panel.Vertical,
{ portId: "", fromLinkable: true, toLinkable: true },
new go.Binding("visible"),
$(go.Panel, go.Panel.Auto,
$(go.Shape,
{ fill: "white", minSize: new go.Size(30, 30), strokeWidth: 0 },
{ cursor: "pointer" }, // indicate that linking may start here
new go.Binding("fill", "color")),
$(go.TextBlock,
{ margin: 2 },
{ fromLinkable: false, toLinkable: false }, // don't start drawing a link from the text
new go.Binding("text", "key"))),
$("Button", // a replacement for "TreeExpanderButton" that works for non-tree-structured graphs
// assume initially not visible because there are no links coming out
{ visible: false },
// bind the button visibility to whether it's not a leaf node
new go.Binding("visible", "isTreeLeaf", leaf => !leaf).ofObject(),
$(go.Shape,
{
name: "ButtonIcon",
figure: "MinusLine",
desiredSize: new go.Size(6, 6)
},
new go.Binding("figure", "isCollapsed", // data.isCollapsed remembers "collapsed" or "expanded"
collapsed => collapsed ? "PlusLine" : "MinusLine")),
{
click: (e, obj) => {
e.diagram.startTransaction();
var node = obj.part;
if (node.data.isCollapsed) {
expandFrom(node, node);
} else {
collapseFrom(node, node);
}
e.diagram.commitTransaction("toggled visibility of dependencies");
}
})
);
function collapseFrom(node, start) {
if (node.data.isCollapsed) return;
node.diagram.model.setDataProperty(node.data, "isCollapsed", true);
if (node !== start) node.diagram.model.setDataProperty(node.data, "visible", false);
node.findNodesOutOf().each(collapseFrom);
}
function expandFrom(node, start) {
if (!node.data.isCollapsed) return;
node.diagram.model.setDataProperty(node.data, "isCollapsed", false);
if (node !== start) node.diagram.model.setDataProperty(node.data, "visible", true);
node.findNodesOutOf().each(expandFrom);
}
myDiagram.linkTemplate =
$(go.Link,
{ relinkableFrom: true, relinkableTo: true, corner: 10 },
$(go.Shape),
$(go.Shape, { toArrow: "Standard" }));
myDiagram.model = new go.GraphLinksModel([
{ key: "A", color: "lightgreen" },
{ key: "B1", color: "yellow" },
{ key: "B2", color: "yellow" },
{ key: "C", color: "lightblue" },
{ key: "D1", color: "orange" },
{ key: "D2", color: "orange" },
{ key: "E", color: "pink" },
{ key: "F", color: "lightgreen" },
{ key: "Z1", color: "lightgreen" },
{ key: "Z2", color: "yellow" },
{ key: "Z3", color: "orange" },
{ key: "Z4", color: "pink" }
], [
{ from: "A", to: "B1" },
{ from: "B1", to: "C" },
{ from: "A", to: "B2" },
{ from: "B2", to: "D2" },
{ from: "C", to: "D1" },
{ from: "C", to: "D2" },
{ from: "D1", to: "E" },
{ from: "D2", to: "E" },
{ from: "D2", to: "F" },
{ from: "Z1", to: "Z2" },
{ from: "Z2", to: "Z3" },
{ from: "Z3", to: "Z4" },
{ from: "Z4", to: "Z1" }
]);
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:600px; height:700px"></div>
<p>
The "TreeExpanderButton", which changes the <a>Node.isTreeExpanded</a> property, really only works with tree structures.
When you want to hide/show the "downstream" nodes from a given node, using the "TreeExpanderButton" might not do what you like,
especially when there are cycles in the graph structure.
</p>
<p>
Instead, this sample implements a "Button" with custom behavior to modify the visibility of each Node.
If this behavior is still not quite right for your app, you can adapt the behavior implemented in the
<code>collapseFrom</code> and <code>expandFrom</code> functions to use different criteria for when to stop recursion.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>