mirror of
https://github.com/vector-im/element-web.git
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2598e4ea22
* Remove vm related code from element-web/src * Add and export view model code from package * Update imports * Rewrite vm tests using vitest * Add github action to run vm tests * Fix lint errors * Mvoe tests over to jest * Try fixing code coverage * Second attempt at fixing code coverage
35 lines
939 B
TypeScript
35 lines
939 B
TypeScript
/*
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Copyright 2025 New Vector Ltd.
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SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
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Please see LICENSE files in the repository root for full details.
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*/
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/**
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* Utility class for view models to manage subscriptions to their updates
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*/
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export class ViewModelSubscriptions {
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private listeners = new Set<() => void>();
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/**
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* Subscribe to changes in the view model.
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* @param listener Will be called whenever the snapshot changes.
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* @returns A function to unsubscribe from the view model updates.
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*/
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public add = (listener: () => void): (() => 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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/**
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* Emit an update to all subscribed listeners.
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*/
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public emit = (): void => {
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for (const listener of this.listeners) {
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listener();
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}
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};
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}
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