Serialization work in progress

js/graph/GraphEntity.js

@@ -0,0 +1,25 @@
+/**
+ * A Graph Entity is an element that can stay directly (as a first child) on the blueprint grid. Those entities are either nodes or links
+ */
+export default class GraphEntity extends HTMLElement {
+    /**
+     * 
+     * @param {import("../template/Template").default} template The template to render this node
+     */
+    constructor(template) {
+        super()
+        /** @type {import("../Blueprint").Blueprint}" */
+        this.blueprint = null
+        this.template = template
+    }
+
+    connectedCallback() {
+        this.blueprint = this.closest('u-blueprint')
+        this.append(...this.template.getElements(this))
+    }
+
+    // Subclasses want to rewrite this
+    render() {
+        return ''
+    }
+}