GT2/Ejectable/node_modules/react-native/Libraries/Vibration/Vibration.js

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2021-08-16 00:14:59 +00:00
/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @format
* @flow
* @jsdoc
*/
'use strict';
import NativeVibration from './NativeVibration';
const Platform = require('../Utilities/Platform');
/**
* Vibration API
*
* See https://reactnative.dev/docs/vibration.html
*/
let _vibrating: boolean = false;
let _id: number = 0; // _id is necessary to prevent race condition.
const _default_vibration_length = 400;
function vibrateByPattern(pattern: Array<number>, repeat: boolean = false) {
if (_vibrating) {
return;
}
_vibrating = true;
if (pattern[0] === 0) {
NativeVibration.vibrate(_default_vibration_length);
pattern = pattern.slice(1);
}
if (pattern.length === 0) {
_vibrating = false;
return;
}
setTimeout(() => vibrateScheduler(++_id, pattern, repeat, 1), pattern[0]);
}
function vibrateScheduler(
id,
pattern: Array<number>,
repeat: boolean,
nextIndex: number,
) {
if (!_vibrating || id !== _id) {
return;
}
NativeVibration.vibrate(_default_vibration_length);
if (nextIndex >= pattern.length) {
if (repeat) {
nextIndex = 0;
} else {
_vibrating = false;
return;
}
}
setTimeout(
() => vibrateScheduler(id, pattern, repeat, nextIndex + 1),
pattern[nextIndex],
);
}
const Vibration = {
/**
* Trigger a vibration with specified `pattern`.
*
* See https://reactnative.dev/docs/vibration.html#vibrate
*/
vibrate: function(
pattern: number | Array<number> = _default_vibration_length,
repeat: boolean = false,
) {
if (Platform.OS === 'android') {
if (typeof pattern === 'number') {
NativeVibration.vibrate(pattern);
} else if (Array.isArray(pattern)) {
NativeVibration.vibrateByPattern(pattern, repeat ? 0 : -1);
} else {
throw new Error('Vibration pattern should be a number or array');
}
} else {
if (_vibrating) {
return;
}
if (typeof pattern === 'number') {
NativeVibration.vibrate(pattern);
} else if (Array.isArray(pattern)) {
vibrateByPattern(pattern, repeat);
} else {
throw new Error('Vibration pattern should be a number or array');
}
}
},
/**
* Stop vibration
*
* See https://reactnative.dev/docs/vibration.html#cancel
*/
cancel: function() {
if (Platform.OS === 'ios') {
_vibrating = false;
} else {
NativeVibration.cancel();
}
},
};
module.exports = Vibration;