R Midhun Suresh
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
52 lines
1.4 KiB
TypeScript
52 lines
1.4 KiB
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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import { type ViewModel } from "./ViewModel";
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import { Disposables } from "./Disposables";
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import { Snapshot } from "./Snapshot";
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import { ViewModelSubscriptions } from "./ViewModelSubscriptions";
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export abstract class BaseViewModel<T, P> implements ViewModel<T> {
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protected subs: ViewModelSubscriptions;
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protected snapshot: Snapshot<T>;
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protected props: P;
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protected disposables = new Disposables();
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protected constructor(props: P, initialSnapshot: T) {
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this.props = props;
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this.subs = new ViewModelSubscriptions();
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this.snapshot = new Snapshot(initialSnapshot, () => {
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this.subs.emit();
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});
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}
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public subscribe = (listener: () => void): (() => void) => {
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return this.subs.add(listener);
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};
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/**
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* Returns the current snapshot of the view model.
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*/
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public getSnapshot = (): T => {
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return this.snapshot.current;
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};
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/**
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* Relinquish any resources held by this view-model.
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*/
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public dispose(): void {
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this.disposables.dispose();
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}
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/**
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* Whether this view-model has been disposed.
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*/
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public get isDisposed(): boolean {
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return this.disposables.isDisposed;
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}
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}
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