Organizing input actions in device folders

js/input/common/Copy.js

@@ -0,0 +1,26 @@
+import Context from "../Context"
+import ObjectSerializer from "../../serialization/ObjectSerializer"
+
+export default class Copy extends Context {
+
+    constructor(target, blueprint, options = {}) {
+        options.wantsFocusCallback = true
+        super(target, blueprint, options)
+        this.serializer = new ObjectSerializer()
+        let self = this
+        this.copyHandler = _ => self.copied()
+    }
+
+    blueprintFocused() {
+        document.body.addEventListener("copy", this.copyHandler)
+    }
+
+    blueprintUnfocused() {
+        document.body.removeEventListener("copy", this.copyHandler)
+    }
+
+    copied() {
+        const value = this.blueprint.getNodes(true).map(node => this.serializer.write(node.entity)).join("\n")
+        navigator.clipboard.writeText(value)
+    }
+}