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demo.html
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<!DOCTYPE>
<html>
<head>
<title>cytoscape-elk.js demo</title>
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1, maximum-scale=1">
<script src="https://unpkg.com/cytoscape/dist/cytoscape.min.js"></script>
<!-- for testing with local version of cytoscape.js -->
<!--<script src="../cytoscape.js/build/cytoscape.js"></script>-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.10/lodash.min.js"></script>
<script src="dist/cytoscape-elk.js"></script>
<style>
body {
font-family: helvetica neue, helvetica, liberation sans, arial, sans-serif;
font-size: 14px;
}
#cy {
position: absolute;
left: 0;
top: 0;
bottom: 0;
right: 0;
z-index: 999;
}
h1 {
opacity: 0.5;
font-size: 1em;
font-weight: bold;
}
</style>
<script>
document.addEventListener('DOMContentLoaded', function () {
let cyLayout;
function addOrphans() {
let count = 1;
setInterval(() => {
let newNode = createNode((1000 + count) + '', 'orphan' + count, 3);
nodes.push(newNode);
cy.add(_.defaults({ group: 'nodes' }, newNode));
refreshLayout();
count++;
}, 2000);
}
function createNode(id, name, age, childIds) {
childIds = childIds || [];
return {
data: {
id: id,
name: name,
age: age,
childIds: childIds,
parentIds: []
}
};
}
function generateLinks(nodes) {
let links = [];
_.forEach(nodes, (parentNode) => {
_.forEach(parentNode.data.childIds, (childNodeId) => {
links.push({
data: {
source: parentNode.data.id,
target: childNodeId,
bendPoints: []
},
bendPoints: []
});
});
});
return links;
}
function refreshLayout(initial) {
nodesMapById = _.keyBy(nodes, 'data.id');
if (cyLayout) {
cyLayout.stop();
}
if (initial) {
cy.json({
elements: {
nodes: nodes,
edges: links
}
});
cyLayout = cy.layout(layoutOptions);
}
else {
layoutOptions.fit = false;
cyLayout = cy.elements().makeLayout(layoutOptions);
}
cyLayout.run();
}
var nodes = [
createNode('1', 'child1-1-1', 12),
createNode('2', 'child1-2-1', 13),
createNode('3', 'child1-2-2', 14),
createNode('4', 'child1-2-3', 15),
createNode('11', 'child1-1-1', 12),
createNode('12', 'child1-2-1', 13),
createNode('13', 'child1-2-2', 14),
createNode('14', 'child1-2-3', 15),
createNode('15', 'child2-1-1', 9),
createNode('16', 'parent1-1', 45, ['11']),
createNode('17', 'parent1-2', 20, ['12', '13', '14']),
createNode('19', 'grandparent1', 74, ['16', '17']),
createNode('6', 'parent1-1', 45, ['1', '11']),
createNode('7', 'parent1-2', 20, ['2', '3', '4']),
createNode('9', 'grandparent1', 74, ['6', '7']),
createNode('18', 'parent2-1', 33, ['15']),
createNode('110', 'grandparent2', 66, ['18']),
createNode('21', 'child1-1-1', 12),
createNode('22', 'child1-2-1', 13),
createNode('23', 'child1-2-2', 14),
createNode('24', 'child1-2-3', 15),
createNode('25', 'child2-1-1', 9),
createNode('26', 'parent1-1', 45, ['21']),
createNode('27', 'parent1-2', 20, ['22', '23', '24']),
createNode('28', 'parent2-1', 33, ['25']),
createNode('29', 'grandparent1', 74, ['26', '27']),
createNode('210', 'grandparent2', 66, ['28']),
];
var links = generateLinks(nodes);
let elements = {
nodes: nodes,
edges: links
};
let layoutOptions = {
name: 'elk',
fit: true,
ranker: 'longest-path',
animate: true,
animationDuration: 300,
animationEasing: 'ease-in-out-cubic',
elk: {
'zoomToFit': true,
'algorithm': 'mrtree',
'separateConnectedComponents': false
}
};
var cy = window.cy = cytoscape({
container: document.getElementById('cy'),
layout: undefined,
style: [
{
selector: 'node',
style: {
'background-color': '#dd4de2'
}
},
{
selector: 'edge',
style: {
'curve-style': 'bezier',
'target-arrow-shape': 'triangle',
'line-color': '#dd4de2',
'target-arrow-color': '#dd4de2',
'opacity': 0.5
}
}
],
elements: elements
});
refreshLayout(true);
addOrphans();
});
</script>
</head>
<body>
<h1>cytoscape-elk demo</h1>
<div id="cy"></div>
</body>
</html>