refactor(renderer): extract modal registry for open/dismiss/active queries (#166)

src/renderer/modal-registry.ts

@@ -0,0 +1,24 @@
+export type ModalDescriptor<TId extends string> = {
+  id: TId;
+  isOpen: () => boolean;
+  close: () => void;
+  suppressesSubtitles: boolean;
+};
+
+export function createModalRegistry<TId extends string>(
+  descriptors: readonly ModalDescriptor<TId>[],
+) {
+  return {
+    isAnyOpen: (): boolean => descriptors.some((descriptor) => descriptor.isOpen()),
+    isAnySuppressingSubtitlesOpen: (): boolean =>
+      descriptors.some((descriptor) => descriptor.suppressesSubtitles && descriptor.isOpen()),
+    getActive: (): TId | null => descriptors.find((descriptor) => descriptor.isOpen())?.id ?? null,
+    dismissOpen: (): void => {
+      for (const descriptor of descriptors) {
+        if (descriptor.isOpen()) {
+          descriptor.close();
+        }
+      }
+    },
+  };
+}