Blueprint focusable

js/input/Context.js

@@ -0,0 +1,23 @@
+export default class Context {
+
+    constructor(target, blueprint, options) {
+        /** @type {HTMLElement} */
+        this.target = target
+        /** @type {import("../Blueprint").default}" */
+        this.blueprint = blueprint
+        this.options = options
+        if (options?.wantsFocusCallback ?? false) {
+            let self = this
+            this.blueprint.addEventListener("blueprintfocus", _ => self.blueprintFocused())
+            this.blueprint.addEventListener("blueprintunfocus", _ => self.blueprintUnfocused())
+        }
+    }
+
+    blueprintFocused() {
+        console.log("focused")
+    }
+
+    blueprintUnfocused() {
+    }
+
+}