69ee8fd96a
* Add commercial licence and update config files
* Update license in headers
* Revert "Update license in headers"
This reverts commit 7ed7949485.
* Update only spdx id
* Remove LicenseRef- from package.json
LicenseRef- no longer allowed in npm v3 package.json
This fixes the warning in the logs and failing build check.
54 lines
1.5 KiB
TypeScript
54 lines
1.5 KiB
TypeScript
/*
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Copyright 2024 New Vector Ltd.
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Copyright 2020 The Matrix.org Foundation C.I.C.
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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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* A utility to ensure that a function is only called once triggered with
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* a mark applied. Multiple marks can be applied to the function, however
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* the function will only be called once upon trigger().
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*
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* The function starts unmarked.
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*/
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export class MarkedExecution {
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private marked = false;
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/**
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* Creates a MarkedExecution for the provided function.
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* @param {Function} fn The function to be called upon trigger if marked.
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* @param {Function} onMarkCallback A function that is called when a new mark is made. Not
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* called if a mark is already flagged.
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*/
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public constructor(
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private fn: () => void,
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private onMarkCallback?: () => void,
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) {}
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/**
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* Resets the mark without calling the function.
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*/
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public reset(): void {
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this.marked = false;
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}
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/**
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* Marks the function to be called upon trigger().
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*/
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public mark(): void {
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if (!this.marked) this.onMarkCallback?.();
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this.marked = true;
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}
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/**
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* If marked, the function will be called, otherwise this does nothing.
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*/
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public trigger(): void {
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if (!this.marked) return;
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this.reset(); // reset first just in case the fn() causes a trigger()
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this.fn();
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}
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}
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