rename: client -> frontend

packages/frontend/src/scripts/page-metadata.ts

@@ -0,0 +1,41 @@
+import * as misskey from 'misskey-js';
+import { ComputedRef, inject, isRef, onActivated, onMounted, provide, ref, Ref } from 'vue';
+
+export const setPageMetadata = Symbol('setPageMetadata');
+export const pageMetadataProvider = Symbol('pageMetadataProvider');
+
+export type PageMetadata = {
+	title: string;
+	subtitle?: string;
+	icon?: string | null;
+	avatar?: misskey.entities.User | null;
+	userName?: misskey.entities.User | null;
+	bg?: string;
+};
+
+export function definePageMetadata(metadata: PageMetadata | null | Ref<PageMetadata | null> | ComputedRef<PageMetadata | null>): void {
+	const _metadata = isRef(metadata) ? metadata : ref(metadata);
+
+	provide(pageMetadataProvider, _metadata);
+
+	const set = inject(setPageMetadata) as any;
+	if (set) {
+		set(_metadata);
+
+		onMounted(() => {
+			set(_metadata);
+		});
+
+		onActivated(() => {
+			set(_metadata);
+		});
+	}
+}
+
+export function provideMetadataReceiver(callback: (info: ComputedRef<PageMetadata>) => void): void {
+	provide(setPageMetadata, callback);
+}
+
+export function injectPageMetadata(): PageMetadata | undefined {
+	return inject(pageMetadataProvider);
+}