I am creating a collapsible tree diagram on the basis of the source code in here http://mbostock.github.io/d3/talk/20111018/tree.html
It is working perfect, but I would like to add checkbox into the tree next to each node text. Please see below image for the desired outlook. I was searching forums, and I have seen that I should append the "foreignObjects" (source). Since I am very new to d3.js and coding, i can not figure out how to modify my existing script.
I would really appreciate any help!
Here is my current code with no checkbox:
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
background-color: #f9f9f9;
}
.node {
cursor: pointer
;
}
.node circle {
fill: #1a5276;
stroke: #444444;
stroke-width: 3px;
}
.node text {
font: 10px sans-serif;
}
.link {
fill: none;
stroke: #805e4b ;
stroke-width: 1px;
stroke-dasharray: 2;
}
.link:hover {
stroke:red;
}
div#tooltip{
color:#505050;
width: 300px;
height: relative;
opacity:1;
padding: 5px;
font: 10px sans-serif;
background: #f0ecec;
border: 0px;
border-radius: 10px;
}
div#hint {
position: absolute;
left: 30px;
top: 30px;
width: 1280px;
font: 14px sans-serif;
color: #999;
}
</style>
<div id="hint">ACTIVITY TYPES AND THEIR DEFINITIONS<br>click to expand or collapse a class of activity / mouse over to see the definitions and examples.</div>
<body>
<script src="d3.v3.min.js"></script>
<div id="tooltip" style="display:none"></div>
<script>
//create tree diagram on the basis of http://mbostock.github.io/d3/talk/20111018/tree.html
var margin = {top: 20, right: 120, bottom: 20, left: 120},
width = 1500 - margin.right - margin.left,
height = 800 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.json("activity.json", function(error, flare) {
if (error) throw error;
root = flare;
root.x0 = height / 2;
root.y0 = 0;
function collapse(d) {
if (d.children) {
d._children = d.children;
d._children.forEach(collapse);
d.children = null;
}
}
root.children.forEach(collapse);
update(root);
});
d3.select(self.frameElement).style("height", "800px");
d3.selectAll("text")
.style("fill", "black");
d3.select(this).select("text")
.style("fill", "red");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) { d.y = d.depth * 180; });
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter any new nodes at the parent's previous position.
var nodeEnter = node.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
.on("click", click)
nodeEnter.append("circle")
.attr("r", 1e-6)
//modification-1 according to color requirements
//see source: https://stackoverflow.com/questions/33524668/d3-collapsible-tree-different-node-colors
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("stroke", function(d) {
if(d.type == "activity_DataCollection") return "#aa1008";
if(d.type == "main_DataCollection") return "#aa1008";
if(d.type == "activity_DataAnalysis") return "#e0a90e";
if(d.type == "main_DataAnalysis") return "#e0a90e";
if(d.type == "activity_DataFiltering") return "#336600";
if(d.type == "main_DataFiltering") return "#336600";
if(d.type == "activity_AddedValue") return "#805e4b";
if(d.type == "main_AddedValue") return "#805e4b";
if(d.type == "activity_Finalisation") return "#8996b9";
if(d.type == "main_Finalisation") return "#8996b9";
})
.style("fill", function(d) {
if(d.type == "activity") return "#805e4b";
if(d.type == "activity_DataCollection") return "#aa1008";
if(d.type == "main_DataCollection") return "white";
if(d.type == "activity_DataAnalysis") return "#e0a90e";
if(d.type == "main_DataAnalysis") return "white";
if(d.type == "activity_DataFiltering") return "#336600";
if(d.type == "main_DataFiltering") return "white";
if(d.type == "activity_AddedValue") return "#805e4b";
if(d.type == "main_AddedValue") return "white";
if(d.type == "activity_Finalisation") return "#8996b9";
if(d.type == "main_Finalisation") return "white";
});
//modification-1 end according to color requirements
//adding tooltips is slightly more complicated.
//see source: https://stackoverflow.com/questions/26790124/modify-lines-tooltip-on-hover
//One way is to have a hidden <div> on your page that becomes visible and moves to the <text> you are mousing over.
//<div id="tooltip" style="display:none"></div> It will then be hidden when you mouse out.
nodeEnter.append("text")
.attr("x", function (d) {
return d.children || d._children ? -10 : 10;
})
.attr("dy", ".35em")
.attr("text-anchor", function (d) {
return d.children || d._children ? "end" : "start";
})
.text(function (d) {
return d.name;
})
.style("fill-opacity", 1e-6)
.on("mouseover", function (d) {
var r = d3.select(this).node().getBoundingClientRect();
d3.select("div#tooltip")
.style("display", "inline")
.style("top", (r.top+15) + "px")
.style("left", r.left + "px")
.style("position", "absolute")
.text(d.definition+" "+d.example);
})
.on("mouseout", function(){
d3.select("div#tooltip").style("display", "none")
});
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
//modification-2 according to color requirements
nodeUpdate.select("circle")
.attr("r", 5)
.style("stroke", function(d) {
if(d.type == "activity_DataCollection") return "#aa1008";
if(d.type == "main_DataCollection") return "#aa1008";
if(d.type == "activity_DataAnalysis") return "#e0a90e";
if(d.type == "main_DataAnalysis") return "#e0a90e";
if(d.type == "activity_DataFiltering") return "#336600";
if(d.type == "main_DataFiltering") return "#336600";
if(d.type == "activity_AddedValue") return "#805e4b";
if(d.type == "main_AddedValue") return "#805e4b";
if(d.type == "activity_Finalisation") return "#8996b9";
if(d.type == "main_Finalisation") return "#8996b9";
})
.style("fill", function(d) {
if(d.type == "activity") return "#805e4b";
if(d.type == "main") return "white";
if(d.type == "activity_DataCollection") return "#aa1008";
if(d.type == "main_DataCollection") return "white";
if(d.type == "activity_DataAnalysis") return "#e0a90e";
if(d.type == "main_DataAnalysis") return "white";
if(d.type == "activity_DataFiltering") return "#336600";
if(d.type == "main_DataFiltering") return "white";
if(d.type == "activity_AddedValue") return "#805e4b";
if(d.type == "main_AddedValue") return "white";
if(d.type == "activity_Finalisation") return "#8996b9";
if(d.type == "main_Finalisation") return "white";
});
//modification-2 end according to color requirements
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(links, function(d) { return d.target.id; });
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
.attr("class", "link")
.attr("d", function(d) {
var o = {x: source.x0, y: source.y0};
return diagonal({source: o, target: o});
});
// Transition links to their new position.
link.transition()
.duration(duration)
.attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
.duration(duration)
.attr("d", function(d) {
var o = {x: source.x, y: source.y};
return diagonal({source: o, target: o});
})
.remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
// Toggle children on click.
function collapse(d) {
if (d.children) {
d._children = d.children;
d._children.forEach(collapse);
d.children = null;
}
}
</script>
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