78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// @ts-check
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/**
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* @typedef {import("../../@types/perf").ScaleFunctions} ScaleFunctions
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*/
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/**
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* @typedef {Object} Props
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* @property {number} value
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* @property {React.ReactNode} label
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* @property {string} id
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* @property {ScaleFunctions} scale
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* @property {(value: number) => unknown} onChange
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* @property {(value: number) => React.ReactNode} display
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*/
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"use strict";
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const {
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PureComponent,
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} = require("resource://devtools/client/shared/vendor/react.mjs");
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const {
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div,
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input,
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label,
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} = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
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/**
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* Provide a numeric range slider UI that works off of custom numeric scales.
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* @extends React.PureComponent<Props>
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*/
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class Range extends PureComponent {
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/**
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* @param {React.ChangeEvent<HTMLInputElement>} event
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*/
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handleInput = event => {
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event.preventDefault();
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const { scale, onChange } = this.props;
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const frac = Number(event.target.value) / scale.steps;
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onChange(scale.fromFractionToSingleDigitValue(frac));
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};
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render() {
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const { label: labelText, scale, id, value, display } = this.props;
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const min = "0";
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const max = scale.steps;
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// Convert the value to the current range.
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const rangeValue = scale.fromValueToFraction(value) * max;
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return div(
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{ className: "perf-settings-range-row" },
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label(
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{
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className: "perf-settings-label",
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htmlFor: id,
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},
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labelText
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),
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input({
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type: "range",
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className: `perf-settings-range-input`,
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min,
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"aria-valuemin": scale.fromFractionToValue(0),
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max,
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"aria-valuemax": scale.fromFractionToValue(1),
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value: rangeValue,
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"aria-valuenow": value,
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onChange: this.handleInput,
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id,
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}),
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div({ className: `perf-settings-range-value` }, display(value))
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);
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}
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}
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module.exports = Range;
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