Added template concept

js/GraphEntity.js

@@ -2,21 +2,24 @@
  * 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 {
-    constructor() {
+    /**
+     * 
+     * @param {import("./template/Template").default} template The template to render this node
+     */
+    constructor(template) {
         super()
         /** @type {import("./UEBlueprint").EBlueprint}" */
         this.blueprint = null
+        this.template = template
     }
 
     connectedCallback() {
         this.blueprint = this.closest('u-blueprint')
-        let aDiv = document.createElement('div')
-        aDiv.innerHTML = this.render()
-        this.appendChild(aDiv.firstElementChild)
+        this.append(...this.template.getElements(this))
     }
 
     // Subclasses want to rewrite this
     render() {
-        return ""
+        return ''
     }
 }