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<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="https://d3js.org/d3.v5.min.js"></script>
<script src="https://unpkg.com/@hpcc-js/wasm@0.3.11/dist/index.min.js"></script>
<script src="https://unpkg.com/d3-graphviz@3.0.5/build/d3-graphviz.js"></script>
<div id="graph" style="text-align: center;"></div>
<script>
var dotSrc = `
<INSERT_DOT>
`;
var dotSrcLines;
// Label to assembly line mapping
var labelAsm = {};
// regex to find node label line
const re = /^"(?<node>[^"]+)" \[label="\1/;
var graphviz = d3.select("#graph").graphviz();
function render() {
var t = d3.transition().delay(100).duration(500);
graphviz.transition(t).renderDot(dotSrc).on("end", interactive);
}
function setup() {
dotSrcLines = dotSrc.split('\n');
console.log("Removing assembly lines from nodes");
// find the assembly line for each label and preserve it in labelAsm
for (i = 0; i < dotSrcLines.length;) {
console.log("checking line %d: %s", i, dotSrcLines[i]);
match = dotSrcLines[i].match(re);
if (match && dotSrcLines[i+2].startsWith(' ')) {
console.log(match);
node = match.groups['node'];
console.log('Found node "%s" on line %d', node, i);
labelAsm[node] = dotSrcLines[i+2];
console.log(labelAsm);
console.log('Deleting line %d: %s', i+2, dotSrcLines[i+2]);
dotSrcLines.splice(i+2, 1);
i = i+3;
} else {
i++;
}
}
dotSrc = dotSrcLines.join('\n');
render();
}
function interactive() {
nodes = d3.selectAll('.node');
nodes.on("click", function () {
var title = d3.select(this).selectAll('title').text().trim();
var text = d3.select(this).selectAll('text').text();
var id = d3.select(this).attr('id');
var class1 = d3.select(this).attr('class');
dotElement = title.replace('->',' -> ');
console.log('Element id="%s" class="%s" title="%s" text="%s" dotElement="%s"', id, class1, title, text, dotElement);
console.log('Inserting assembly line for "%s"', dotElement);
for (i = 0; i < dotSrcLines.length;) {
var match = dotSrcLines[i].match(re);
if (match) {
var node = match.groups['node'];
if (node === dotElement) {
// check if we have an assembly line
var asm = labelAsm[node];
if (asm) {
// toggle the assembly line
if (dotSrcLines[i+2].startsWith(' ')) {
dotSrcLines.splice(i+2, 1);
} else {
dotSrcLines.splice(i+2, 0, asm);
}
break;
}
}
}
i++;
}
dotSrc = dotSrcLines.join('\n');
render();
});
}
setup();
</script>
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