112 строки
2.5 KiB
JavaScript
112 строки
2.5 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow
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* @jsdoc
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*/
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'use strict';
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import NativeVibration from './NativeVibration';
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const Platform = require('../Utilities/Platform');
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/**
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* Vibration API
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*
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* See https://facebook.github.io/react-native/docs/vibration.html
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*/
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let _vibrating: boolean = false;
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let _id: number = 0; // _id is necessary to prevent race condition.
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function vibrateByPattern(pattern: Array<number>, repeat: boolean = false) {
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if (_vibrating) {
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return;
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}
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_vibrating = true;
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if (pattern[0] === 0) {
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NativeVibration.vibrate();
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pattern = pattern.slice(1);
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}
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if (pattern.length === 0) {
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_vibrating = false;
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return;
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}
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setTimeout(() => vibrateScheduler(++_id, pattern, repeat, 1), pattern[0]);
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}
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function vibrateScheduler(
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id,
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pattern: Array<number>,
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repeat: boolean,
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nextIndex: number,
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) {
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if (!_vibrating || id !== _id) {
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return;
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}
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NativeVibration.vibrate();
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if (nextIndex >= pattern.length) {
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if (repeat) {
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nextIndex = 0;
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} else {
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_vibrating = false;
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return;
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}
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}
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setTimeout(
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() => vibrateScheduler(id, pattern, repeat, nextIndex + 1),
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pattern[nextIndex],
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);
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}
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const Vibration = {
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/**
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* Trigger a vibration with specified `pattern`.
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*
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* See https://facebook.github.io/react-native/docs/vibration.html#vibrate
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*/
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vibrate: function(
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pattern: number | Array<number> = 400,
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repeat: boolean = false,
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) {
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if (Platform.OS === 'android') {
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if (typeof pattern === 'number') {
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NativeVibration.vibrate(pattern);
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} else if (Array.isArray(pattern)) {
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NativeVibration.vibrateByPattern(pattern, repeat ? 0 : -1);
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} else {
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throw new Error('Vibration pattern should be a number or array');
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}
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} else {
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if (_vibrating) {
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return;
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}
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if (typeof pattern === 'number') {
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NativeVibration.vibrate();
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} else if (Array.isArray(pattern)) {
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vibrateByPattern(pattern, repeat);
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} else {
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throw new Error('Vibration pattern should be a number or array');
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}
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}
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},
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/**
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* Stop vibration
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*
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* See https://facebook.github.io/react-native/docs/vibration.html#cancel
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*/
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cancel: function() {
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if (Platform.OS === 'ios') {
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_vibrating = false;
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} else {
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NativeVibration.cancel();
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}
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},
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};
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module.exports = Vibration;
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