464 lines
15 KiB
JavaScript
464 lines
15 KiB
JavaScript
/* global angular */
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/**
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* Created by intelWorx on 19/11/2015.
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*/
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(function() {
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'use strict';
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/**
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* Main module, your application should depend on this
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* @module {mdWavesurfer}
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*/
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let app = angular.module('mdWavesurfer', ['ngMaterial']);
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/**
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* @ngdoc service
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* @name $mdWavesurferUtils
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*
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* @description
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*
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* Utility service for this directive, exposes method:
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* - getLength(url), which returns a promise for the length of the audio specified by URL
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*
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* ```js
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* app.directive('myFancyDirective', function(mdWavesurferUtils) {
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* return {
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* restrict: 'e',
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* link: function(scope, el, attrs) {
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* mdWavesurferUtils(attrs.url)
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* .then(function(l){
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* scope.length = l;
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* }, function(){
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* someErrorhandler()
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* })
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* ;
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* }
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* };
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* });
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* ```
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*/
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app.factory('mdWavesurferUtils', [
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'$q',
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'$document',
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'$timeout',
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function($q, $document, $timeout) {
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return {
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getLength: function(object) {
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let deferred = $q.defer();
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let estimateLength = function(url) {
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let audio = $document[0].createElement('audio');
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audio.src = url;
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audio.addEventListener(
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'loadeddata',
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function listener() {
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deferred.resolve(this.duration);
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audio.removeEventListener(
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'loadeddata',
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listener
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);
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audio.src = 'data:audio/mpeg,0'; //destroy loading.
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}
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);
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audio.addEventListener('error', function(e) {
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deferred.resolve(e.target.error);
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});
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};
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if (typeof object === 'string') {
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//this is a URL
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estimateLength(object);
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} else {
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$timeout(function() {
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deferred.reject(
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new DOMError(
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'NotSupportedError',
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'Specified argument is not supported'
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)
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);
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});
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}
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return deferred.promise;
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}
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};
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}
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]);
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/**
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* @ngdoc filter
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* @name mdWavesurferTimeFormat
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*
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* Simple filter to convert value in seconds to MM:SS format
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*
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* @param Number duration in seconds
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*/
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app.filter('mdWavesurferTimeFormat', function() {
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return function(input) {
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if (!input) {
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return '00:00';
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}
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const minutes = Math.floor(input / 60);
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const seconds = Math.floor(input) % 60;
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return (
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(minutes < 10 ? '0' : '') +
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minutes +
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':' +
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(seconds < 10 ? '0' : '') +
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seconds
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);
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};
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});
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app.controller('mdWavesurferAudioController', [
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'$attrs',
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'$element',
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function(attributes, $element) {
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let audio = this;
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audio.tracks = [];
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audio.selectedIndex = audio.selectedIndex || 0;
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audio.currentTrack = null;
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//adds to an audio track
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audio.addTrack = function(trackScope) {
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if (audio.tracks.indexOf(trackScope) < 0) {
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audio.tracks.push(trackScope);
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}
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if (!audio.currentTrack) {
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audio.currentTrack = audio.tracks[audio.selectedIndex];
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}
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};
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//remove audio track
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audio.removeTrack = function(trackScope) {
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const idx = audio.tracks.indexOf(trackScope);
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if (idx >= 0) {
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audio.tracks.splice(idx, 1);
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}
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};
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audio.playerProperties = {};
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let nKey;
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for (let attr in attributes) {
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if (attr.match(/^player/)) {
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nKey = attr.replace(/^player([A-Z])/, function(m, $1) {
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return $1.toLowerCase();
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});
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audio.playerProperties[nKey] = attributes[attr];
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}
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}
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let getPlayer = function() {
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return $element
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.find('md-wavesurfer-player')
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.controller('mdWavesurferPlayer');
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};
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let setAutoPlay = function(forcePlay) {
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let controller = getPlayer();
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if (
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controller &&
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(forcePlay || controller.surfer.isPlaying())
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) {
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controller.autoPlay = true;
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}
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};
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audio.setTrack = function(idx, forcePlay) {
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if (audio.tracks.length > idx) {
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if (audio.selectedIndex === idx) {
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let ctrl = getPlayer();
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ctrl.surfer.playPause();
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} else {
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setAutoPlay(forcePlay);
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audio.currentTrack = audio.tracks[idx];
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audio.selectedIndex = idx;
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}
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}
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};
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audio.extraButtons = [
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{
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icon: 'zmdi zmdi-skip-previous',
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title: 'Previous',
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action: function($event) {
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if (audio.selectedIndex > 0) {
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audio.setTrack(audio.selectedIndex - 1);
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}
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},
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class: ''
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},
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{
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icon: 'zmdi zmdi-skip-next',
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title: 'Next',
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action: function($event) {
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if (audio.selectedIndex < audio.tracks.length - 1) {
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audio.setTrack(audio.selectedIndex + 1);
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}
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},
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class: ''
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}
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];
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}
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]);
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/**
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* @ngdoc directive
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* @name md-wavesurfer-audio
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*
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* Directive for playing a set of audio files. This directive is analogous to `<audio>` HTML tag.
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* The audio files, should be specified using the `md-wavesurfer-source`
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*
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* WaveSurfer properties can be passed in using the prefix : player-* for attributes, e.g. `player-wave-color` is
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* equivalent to WaveSurfer's waveColor option.
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*
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* Must be used as an element.
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*
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* @usage
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* ```html
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* <md-wavesurfer-audio player-wave-color="gray" player-progress-color="black" player-backend="MediaElement">
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* <md-wavesurfer-source src="source1" title="Title-1"></md-wavesurfer-source>
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* <md-wavesurfer-source src="source2" title="Title-2"></md-wavesurfer-source>
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* <md-wavesurfer-source src="source3" title="Title-3"></md-wavesurfer-source>
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* ...
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* <md-wavesurfer-source src="sourceN" title="Рассказы о сновидениях"></md-wavesurfer-source>
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* </md-wavesurfer-audio>
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* ```
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*
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* @param string player-* specifies WaveSurfer properties.
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*
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*/
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app.directive('mdWavesurferAudio', [
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function() {
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return {
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restrict: 'E',
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templateUrl: 'md-player-audio.partial.html',
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transclude: true,
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controller: 'mdWavesurferAudioController',
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controllerAs: 'audio'
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};
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}
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]);
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/**
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* @ngdoc directive
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*
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* @name md-wavesurfer-source
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*
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* This directive is used within the `md-wavesurfer-audio` directive to specify an audio file source, it is
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* synonymous to `<source>` tag in HTML
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*
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* The directive cannot be used as standalone.
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*
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* @usage
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*
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* ```html
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* <md-wavesurfer-source src="source3" title="Title-3" album-art="Album-Art-Url" duration=""></md-wavesurfer-source>
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* ```
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* @param String src the URL to the audio file, this is required.
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* @param String title track title
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* @param String album-art the album art URL
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* @param Number duration the length of the audio file in seconds, will be auto-detected if not specified.
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*
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*/
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app.directive('mdWavesurferSource', [
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'mdWavesurferUtils',
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function(mdWavesurferUtils) {
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return {
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restrict: 'E',
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require: '^mdWavesurferAudio',
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scope: {
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src: '@',
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albumArt: '@',
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title: '@',
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duration: '='
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},
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link: function(scope, element, attrs, audio) {
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audio.addTrack(scope);
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if (!scope.duration) {
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mdWavesurferUtils.getLength(scope.src).then(
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function(dur) {
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scope.duration = dur;
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},
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function(e) {
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scope.duration = 0;
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console.log(
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'Failed to get audio length, reason: ',
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e.message
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);
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}
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);
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}
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element.on('$destroy', function() {
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audio.removeTrack(audio);
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});
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}
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};
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}
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]);
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app.controller('mdWavesurferPlayerController', [
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'$element',
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'$scope',
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'$attrs',
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'$interval',
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'$mdTheming',
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function($element, $scope, attributes, $interval, $mdTheme) {
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let control = this,
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timeInterval;
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control.themeClass = 'md-' + $mdTheme.defaultTheme() + '-theme';
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control.isReady = false;
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control.surfer = null;
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control.toggleMute = function() {
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if (control.surfer) {
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control.surfer.toggleMute();
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control.isMute = !control.isMute;
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}
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};
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let initWaveSurfer = function() {
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control.isReady = false;
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control.currentTime = 0;
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if (!control.surfer) {
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let options = {
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container: $element[0].querySelector(
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'.waveSurferWave'
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)
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},
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defaults = {
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scrollParent: true,
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waveColor: 'violet',
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progressColor: 'purple'
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};
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options = angular.extend(
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defaults,
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attributes,
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control.properties || {},
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options
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);
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control.surfer = WaveSurfer.create(options);
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control.surfer.on('ready', function() {
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control.isReady = true;
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if (control.autoPlay) {
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control.surfer.play();
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}
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$scope.$apply();
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});
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control.surfer.on('pause', function() {
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stopInterval();
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});
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control.surfer.on('finish', function() {
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stopInterval();
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});
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control.surfer.on('play', function() {
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startInterval();
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});
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}
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control.title = control.title || control.src.split('/').pop();
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control.surfer.load(control.src);
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};
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let startInterval = function() {
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timeInterval = $interval(function() {
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control.currentTime = control.isReady
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? control.surfer.getCurrentTime()
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: 0;
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}, 1000);
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},
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stopInterval = function() {
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$interval.cancel(timeInterval);
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};
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initWaveSurfer();
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$scope.$watch('control.src', function(src1, src2) {
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if (src1 != src2) {
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initWaveSurfer();
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}
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});
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$element.on('$destroy', function() {
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if (control.surfer) {
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control.surfer.destroy();
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}
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stopInterval();
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});
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$scope.$watch(
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function() {
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let div = $element[0].querySelector('.audioPlayerWrapper');
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return div ? div.offsetWidth : 0;
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},
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function(width) {
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if (width < 1) {
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//hidden
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control.surfer.pause();
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}
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}
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);
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}
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]);
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/**
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* @ngdoc directive
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*
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* @name md-wavesurfer-player
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*
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* @usage
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* This directive can be used as a stand-alone directive to display Audio WaveSurfer with a few controls, by default
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* this will only display play/pause, fast-forward, rewind and mute toggle buttons, however, you can add extra
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* buttons using the `extra-buttons` parameters.
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*
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* ```html
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* <md-wavesurfer-player url="trackUrl" title="Track Title"
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* extra-buttons="extraButtons" properties="properties">
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* </md-wavesurfer-player>
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* ```
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*
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* @param {string} url the URL of the audio file
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* @param {string} title title of the audio track
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* @param {object} properties an object specifying init options for WaveSurfer
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* @param {boolean} auto-play specifies if the player should start as soon as it's loaded.
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* @param {object[]} extra-buttons a list of extra buttons to add to the control panel
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* each button should be an object with the following properties:
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* {
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* title: "button title"
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* action: "call back to call when button is clicked, executed in parent scope",
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* icon: "md-font-icon parameter for the button"
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* class: "extra classes to add to the button."
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* }
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*
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* Every other attribute passed to this directive is assumed to a WaveSurver init parameter.
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*/
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app.directive('mdWavesurferPlayer', function() {
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return {
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restrict: 'E',
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templateUrl: 'md-player.partial.html',
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scope: {
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src: '@url',
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title: '@',
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extraButtons: '=',
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toolbarClass: '@',
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autoPlay: '=',
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properties: '='
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},
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controller: 'mdWavesurferPlayerController',
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controllerAs: 'control',
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bindToController: true
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};
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});
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})();
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