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57 lines
1.9 KiB
TypeScript
57 lines
1.9 KiB
TypeScript
/**
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* Copyright (c) 2021 OpenLens Authors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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// Helper for working with time updates / data-polling callbacks
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type IntervalCallback = (count: number) => void;
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export function interval(timeSec = 1, callback: IntervalCallback, autoRun = false) {
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let count = 0;
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let timer = -1;
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let isRunning = false;
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const intervalManager = {
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start(runImmediately = false) {
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if (isRunning) return;
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const tick = () => callback(++count);
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isRunning = true;
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timer = window.setInterval(tick, 1000 * timeSec);
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if (runImmediately) tick();
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},
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stop() {
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count = 0;
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isRunning = false;
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clearInterval(timer);
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},
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restart(runImmediately = false) {
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this.stop();
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this.start(runImmediately);
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},
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get isRunning() {
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return isRunning;
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},
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};
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if (autoRun) intervalManager.start();
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return intervalManager;
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}
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