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client/refactor: extract the debouncer to a separate module
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@ -2,6 +2,7 @@ import "./NoteColorPickerMenuItem.css";
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import { useEffect, useRef, useState} from "preact/hooks";
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import {ComponentChildren} from "preact";
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import attributes from "../../services/attributes";
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import Debouncer from "../../utils/debouncer";
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import FNote from "../../entities/fnote";
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import froca from "../../services/froca";
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@ -107,36 +108,3 @@ function CustomColorCell(props: ColorCellProps) {
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</ColorCell>
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</>
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}
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type DebouncerCallback<T> = (value: T) => void;
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class Debouncer<T> {
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private debounceInterval: number;
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private callback: DebouncerCallback<T>;
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private lastValue: T | undefined;
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private timeoutId: any | null = null;
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constructor(debounceInterval: number, onUpdate: DebouncerCallback<T>) {
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this.debounceInterval = debounceInterval;
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this.callback = onUpdate;
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}
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updateValue(value: T) {
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this.lastValue = value;
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this.destroy();
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this.timeoutId = setTimeout(this.reportUpdate.bind(this), this.debounceInterval);
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}
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destroy() {
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if (this.timeoutId !== null) {
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clearTimeout(this.timeoutId);
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}
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}
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private reportUpdate() {
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if (this.lastValue !== undefined) {
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this.callback(this.lastValue);
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}
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}
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}
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32
apps/client/src/utils/debouncer.ts
Normal file
32
apps/client/src/utils/debouncer.ts
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@ -0,0 +1,32 @@
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export type DebouncerCallback<T> = (value: T) => void;
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export default class Debouncer<T> {
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private debounceInterval: number;
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private callback: DebouncerCallback<T>;
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private lastValue: T | undefined;
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private timeoutId: any | null = null;
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constructor(debounceInterval: number, onUpdate: DebouncerCallback<T>) {
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this.debounceInterval = debounceInterval;
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this.callback = onUpdate;
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}
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updateValue(value: T) {
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this.lastValue = value;
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this.destroy();
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this.timeoutId = setTimeout(this.reportUpdate.bind(this), this.debounceInterval);
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}
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destroy() {
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if (this.timeoutId !== null) {
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clearTimeout(this.timeoutId);
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}
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}
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private reportUpdate() {
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if (this.lastValue !== undefined) {
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this.callback(this.lastValue);
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}
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}
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}
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