dagre-d3 how to click node and run an event after that - d3.js

Question

I am using dagre-d3.js to create hierarchical graph. Now I have a requirement to make the node clickable and perform a function. I am unable to achieve that.
current some of my code looks like
var g = new dagreD3.graphlib.Graph().setGraph({});
g.setNode("TEST", { label: "TEST"})
g.setNode("TEST1", { label: "TEST1"})
g.setEdge("TEST", "TEST1", { label: "open", style: "stroke: green; stroke-width: 2px;fill: none", arrowheadStyle: "fill: green" });
var svg = d3.select("svg"),
inner = svg.select("g");
var render = new dagreD3.render();
render(inner, g);
var initialScale = 0.75;
zoom
.translate([(svg.attr("width") - g.graph().width * initialScale) / 2, 20])
.scale(initialScale)
.event(svg);
svg.attr('height', g.graph().height * initialScale + 40);
I just need to be able to click on TEST or TEST1 and run a function that I wrote to go to that div with same name on page(TEST, TEST1)
I have looked through this, but it doesn't help me.
https://github.com/cpettitt/dagre-d3/issues/13
Also this seems to use different method which is not available to me.
Please guide me
Thanks,
Nihir

Answer 1

Here are 4 mouse events:
d3.selectAll('svg g.comp')
.on('mouseover', function(d) {
console.log('mouseover');
})
.on('mouseout', function(d) {
console.log('mouseout');
})
.on('mousedown', function(d) {
console.log('mousedown');
})
.on('mouseup', function(d) {
console.log('mouseup');
});

Answer 2

This sounds like an interesting approach.
But there were some inbuilt method available to which I just figured out
here is my solution
var selections = inner.selectAll("g.node");
selections
.on('click', function (d) { ScrollToID(d); });

Answer 3

You can use jquery to select the node tag on click, then parse out the node name and pass it into your function. Something like this:
$(document).ready(function() {
$('.node').click(function() {
// This gets the node name from the 'class' attribute
var class_header = $(this).attr('class').split(' ');
var node_name = class_header[class_header.length - 1]
// Execute your function
myFunction(node_name)
})
})

Answer 4

var json = {"nodes": [{"name": "Node1", "group": 2},{"name": "Node2","group": 1},{"name": "Node3","group": 1}],
"links": [{"source": 0,"target": 1,"value": 2},{"source": 0,"target": 2,"value": 2}]};
var width = 960,
height = 500;
var color = d3.scale.category20();
var force = d3.layout.force()
.charge(-120)
.linkDistance(30)
.size([width, height]);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
force.nodes(json.nodes)
.links(json.links)
.start();
var link = svg.selectAll(".link")
.data(json.links)
.enter().append("line")
.attr("class", function(d){ return ["link", d.source.name, d.target.name].join(" "); })
.style("stroke-width", function(d) { return Math.sqrt(d.value); });
// Set up dictionary of neighbors
var node2neighbors = {};
for (var i =0; i < json.nodes.length; i++){
var name = json.nodes[i].name;
node2neighbors[name] = json.links.filter(function(d){
return d.source.name == name || d.target.name == name;
}).map(function(d){
return d.source.name == name ? d.target.name : d.source.name;
});
}
var clickableNodes = ["Node1"];
var nodes = svg.selectAll(".node")
.data(json.nodes)
.enter().append("circle")
.attr("class", "node")
.attr("id", function(n){ return n.name; })
.attr("r", 5)
.style("fill", function(d) { return color(d.group); })
.call(force.drag)
nodes.filter(function(n){ return clickableNodes.indexOf(n.name) != -1; })
.on("click", function(n){
// Determine if current node's neighbors and their links are visible
var active = n.active ? false : true // toggle whether node is active
, newOpacity = active ? 0 : 1;
// Extract node's name and the names of its neighbors
var name = n.name
, neighbors = node2neighbors[name];
// Hide the neighbors and their links
for (var i = 0; i < neighbors.length; i++){
d3.select("circle#" + neighbors[i]).style("opacity", newOpacity);
d3.selectAll("line." + neighbors[i]).style("opacity", newOpacity);
}
// Update whether or not the node is active
n.active = active;
});
nodes.append("title")
.text(function(d) { return d.name; });
force.on("tick", function() {
link.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
nodes.attr("cx", function(d) { return d.x; })
.attr("cy", function(d) { return d.y; });
});