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| import {
| onMethod,
| invokeMethod
| } from '../../platform'
|
| const eventNames = [
| 'canplay',
| 'play',
| 'pause',
| 'stop',
| 'ended',
| 'timeUpdate',
| 'prev',
| 'next',
| 'error',
| 'waiting'
| ]
| const callbacks = {}
| eventNames.forEach(name => {
| callbacks[name] = []
| })
|
| const props = [
| {
| name: 'duration',
| readonly: true
| },
| {
| name: 'currentTime',
| readonly: true
| },
| {
| name: 'paused',
| readonly: true
| },
| {
| name: 'src',
| cache: true
| },
| {
| name: 'startTime',
| default: 0,
| cache: true
| },
| {
| name: 'buffered',
| readonly: true
| },
| {
| name: 'title',
| cache: true
| },
| {
| name: 'epname',
| cache: true
| },
| {
| name: 'singer',
| cache: true
| },
| {
| name: 'coverImgUrl',
| cache: true
| },
| {
| name: 'webUrl',
| cache: true
| },
| {
| name: 'protocol',
| readonly: true,
| default: 'http'
| },
| {
| name: 'playbackRate',
| default: 1,
| cache: true
| }
| ]
|
| const backgroundEvents = ['prev', 'next']
|
| class BackgroundAudioManager {
| constructor () {
| this._options = {}
| onMethod('onBackgroundAudioStateChange', ({
| state,
| errMsg,
| errCode
| }) => {
| callbacks[state].forEach(callback => {
| if (typeof callback === 'function') {
| callback(state === 'error' ? {
| errMsg,
| errCode
| } : {})
| }
| })
| })
| backgroundEvents.forEach((name) => {
| onMethod(`onBackgroundAudio${name[0].toUpperCase() + name.substr(1)}`, () => {
| callbacks[name].forEach(callback => {
| if (typeof callback === 'function') {
| callback({})
| }
| })
| })
| })
| props.forEach(item => {
| const name = item.name
| const data = {
| get () {
| const result = item.cache ? this._options : invokeMethod('getBackgroundAudioState')
| return name in result ? result[name] : item.default
| }
| }
| if (!item.readonly) {
| data.set = function (value) {
| this._options[name] = value
| invokeMethod('setBackgroundAudioState', Object.assign({}, this._options, {
| audioId: this.id
| }), name)
| }
| }
| Object.defineProperty(this, name, data)
| })
| }
|
| play () {
| this._operate('play')
| }
|
| pause () {
| this._operate('pause')
| }
|
| stop () {
| this._operate('stop')
| }
|
| seek (position) {
| this._operate('seek', {
| currentTime: position
| })
| }
|
| _operate (type, options) {
| invokeMethod('operateBackgroundAudio', Object.assign({}, options, {
| operationType: type
| }))
| }
| }
|
| eventNames.forEach(item => {
| const name = item[0].toUpperCase() + item.substr(1)
| BackgroundAudioManager.prototype[`on${name}`] = function (callback) {
| callbacks[item].push(callback)
| }
| })
|
| let backgroundAudioManager
|
| export function getBackgroundAudioManager () {
| return backgroundAudioManager || (backgroundAudioManager = new BackgroundAudioManager())
| }
|
|
