Paste event handling WIP

js/input/Paste.js

@@ -0,0 +1,29 @@
+import GraphNode from "../graph/GraphNode"
+import ObjectSerializer from "../serialization/ObjectSerializer"
+
+export default class Paste {
+
+    constructor(target, blueprint, options) {
+        /** @type {HTMLElement} */
+        this.target = target
+        /** @type {import("../Blueprint").default}" */
+        this.blueprint = blueprint
+        this.serializer = new ObjectSerializer()
+
+        let self = this
+        this.pasteHandler = e => {
+            self.pasted(e.clipboardData.getData("text"))
+        }
+        this.target.addEventListener("paste", this.pasteHandler)
+    }
+
+    pasted(value) {
+        let nodes = this.serializer.readMultiple(value).map(entity => new GraphNode(entity))
+        this.blueprint.addNode(...nodes)
+    }
+
+    unlistenDOMElement() {
+        this.target.removeEventListener("paste", this.pasteHandler)
+    }
+
+}