53 lines
1.4 KiB
TypeScript
53 lines
1.4 KiB
TypeScript
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/**
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* Theme runtime actions produced by TerminalHost (`useThemeRuntime`).
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* AppSideEffects handlers (default/follow theme changes) call through this
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* bridge instead of co-hosting the hook.
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*/
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type Listener = () => void;
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export type ThemeRuntimeBridgeActions = {
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clearThemeIntent: () => void;
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settleManualThemeIntent: () => void;
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pickTerminalTheme: (themeId: string) => void;
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resolveFocusedAppearance: (...args: never[]) => unknown;
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currentTerminalTheme: unknown;
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globalAppearance: unknown;
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};
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class ThemeRuntimeBridge {
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private actions: ThemeRuntimeBridgeActions | null = null;
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private listeners = new Set<Listener>();
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get = (): ThemeRuntimeBridgeActions | null => this.actions;
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subscribe = (listener: Listener): (() => void) => {
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this.listeners.add(listener);
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return () => {
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this.listeners.delete(listener);
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};
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};
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set(next: ThemeRuntimeBridgeActions | null): void {
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if (this.actions === next) return;
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this.actions = next;
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for (const listener of this.listeners) listener();
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}
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}
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const bridge = new ThemeRuntimeBridge();
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export function registerThemeRuntimeActions(
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actions: ThemeRuntimeBridgeActions | null,
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): void {
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bridge.set(actions);
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}
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export function getThemeRuntimeActions(): ThemeRuntimeBridgeActions | null {
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return bridge.get();
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}
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export function subscribeThemeRuntimeActions(listener: Listener): () => void {
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return bridge.subscribe(listener);
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}
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