Move the content graph layout into theme

layouts/graph/single.html

@@ -0,0 +1,16 @@
+{{ define "main" }}
+<h2>{{ .Title }} </h2>
+<script src="//unpkg.com/vis-network@9.1.0/dist/vis-network.min.js"></script>
+<script type="module" src="{{ .Site.BaseURL }}/graph/graph.js"></script>
+<style>
+#graph-container {
+    width: 100%;
+    height: 50vh;
+    border-radius: 0.2rem;
+    border: .075rem solid #bfbfbf
+}
+</style>
+{{ .Content }}
+<div id="graph-container">
+</div>
+{{ end }}

static/graph/graph.js

@@ -0,0 +1,53 @@
+import { nodes, edges } from "./graph.gen.js";
+
+var container = document.getElementById("graph-container");
+var options = {
+    interaction: {
+        hover: true
+    },
+    nodes: {
+        shape: "dot",
+        size: 16,
+    },
+    physics: {
+        forceAtlas2Based: {
+            gravitationalConstant: -10,
+            centralGravity: 0.005,
+            springLength: 230,
+            springConstant: 0.18,
+        },
+        maxVelocity: 146,
+        solver: "forceAtlas2Based",
+        timestep: 0.35,
+        stabilization: { iterations: 150 },
+    },
+};
+
+var nodesDs = new vis.DataSet();
+nodesDs.add(nodes);
+var edgesDs = new vis.DataSet();
+edgesDs.add(edges);
+var network = new vis.Network(container, { nodes: nodesDs, edges: edgesDs }, options);
+
+network.on("doubleClick", function (params) {
+    params.event = "[original event]";
+    if (params.nodes.length !== 1) return;
+    window.open(nodesDs.get(params.nodes[0]).url, "_blank")
+});
+network.on("hoverNode", function (params) {
+    nodesDs.update({ id: params.node, label: nodesDs.get(params.node).name });
+});
+network.on("blurNode", function (params) {
+    nodesDs.update({ id: params.node, label: undefined });
+});
+// network.on("selectNode", function (params) {
+//     for (const node of params.nodes) {
+//         nodesDs.update({ id: node, label: nodesDs.get(node).name });
+//     }
+// });
+// network.on("deselectNode", function (params) {
+//     for (const node of params.previousSelection.nodes) {
+//         if (params.nodes.some(n => n === node)) continue;
+//         nodesDs.update({ id: node, label: undefined });
+//     }
+// });