Refactoring, various fixes

js/input/IContext.js

@@ -1,14 +1,36 @@
 export default class IContext {
 
+    /** @type {HTMLElement} */
+    target
+
+    /** @type {import("../Blueprint").default}" */
+    blueprint
+
+    /** @type {Object} */
+    options
+
+    #hasFocus = false
+
+    get hasFocus() {
+        return this.#hasFocus
+    }
+
+    set hasFocus(_) {
+    }
+
     constructor(target, blueprint, options) {
-        /** @type {HTMLElement} */
         this.target = target
-        /** @type {import("../Blueprint").default}" */
         this.blueprint = blueprint
         this.options = options
         let self = this
-        this.blueprintFocusHandler = _ => self.listenEvents()
-        this.blueprintUnfocusHandler = _ => self.unlistenEvents()
+        this.blueprintFocusHandler = _ => {
+            this.#hasFocus = true
+            self.listenEvents()
+        }
+        this.blueprintUnfocusHandler = _ => {
+            self.unlistenEvents()
+            this.#hasFocus = false
+        }
         if (options?.wantsFocusCallback ?? false) {
             this.blueprint.addEventListener("blueprint-focus", this.blueprintFocusHandler)
             this.blueprint.addEventListener("blueprint-unfocus", this.blueprintUnfocusHandler)