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/*
Example: https://www.codehim.com/demo/javascript-audio-player-with-playlist/
*/
// Multiple events to a listener
function addEventListener_multi(element, eventNames, handler) {
var events = eventNames.split(' ');
events.forEach(e => element.addEventListener(e, handler, false));
}
// Random numbers in a specific range
function getRandom(min, max) {
min = Math.ceil(min);
max = Math.floor(max);
return Math.floor(Math.random() * (max - min + 1)) + min;
}
// Position element inside element
function getRelativePos(elm) {
var pPos = elm.parentNode.getBoundingClientRect(); // parent pos
var cPos = elm.getBoundingClientRect(); // target pos
var pos = {};
pos.top = cPos.top - pPos.top + elm.parentNode.scrollTop,
pos.right = cPos.right - pPos.right,
pos.bottom = cPos.bottom - pPos.bottom,
pos.left = cPos.left - pPos.left;
return pos;
}
function formatTime(val) {
var h = 0, m = 0, s;
val = parseInt(val, 10);
if (val > 60 * 60) {
h = parseInt(val / (60 * 60), 10);
val -= h * 60 * 60;
}
if (val > 60) {
m = parseInt(val / 60, 10);
val -= m * 60;
}
s = val;
val = (h > 0)? h + ':' : '';
val += (m > 0)? ((m < 10 && h > 0)? '0' : '') + m + ':' : '0:';
val += ((s < 10)? '0' : '') + s;
return val;
}
function simp_initTime() {
simp_controls.querySelector('.start-time').innerHTML = formatTime(simp_audio.currentTime); //calculate current value time
if (!simp_isStream) {
simp_controls.querySelector('.end-time').innerHTML = formatTime(simp_audio.duration); //calculate total value time
simp_progress.value = simp_audio.currentTime / simp_audio.duration * 100; //progress bar
}
// ended of the audio
if (simp_audio.currentTime == simp_audio.duration) {
simp_controls.querySelector('.simp-plause').classList.remove('fa-pause');
simp_controls.querySelector('.simp-plause').classList.add('fa-play');
simp_audio.removeEventListener('timeupdate', simp_initTime);
if (simp_isNext) { //auto load next audio
var elem;
simp_a_index++;
if (simp_a_index == simp_a_url.length) { //repeat all audio
simp_a_index = 0;
elem = simp_a_url[0];
} else {
elem = simp_a_url[simp_a_index];
}
simp_changeAudio(elem);
simp_setAlbum(simp_a_index);
} else {
simp_isPlaying = false;
}
}
}
function simp_initAudio() {
// if readyState more than 2, audio file has loaded
simp_isLoaded = simp_audio.readyState == 4 ? true : false;
simp_isStream = simp_audio.duration == 'Infinity' ? true : false;
simp_controls.querySelector('.simp-plause').disabled = false;
simp_progress.disabled = simp_isStream ? true : false;
if (!simp_isStream) {
simp_progress.parentNode.classList.remove('simp-load','simp-loading');
simp_controls.querySelector('.end-time').innerHTML = formatTime(simp_audio.duration);
}
simp_audio.addEventListener('timeupdate', simp_initTime); //tracking load progress
if (simp_isLoaded && simp_isPlaying) simp_audio.play();
// progress bar click event
addEventListener_multi(simp_progress, 'touchstart mousedown', function(e) {
if (simp_isStream) {
e.stopPropagation();
return false;
}
if (simp_audio.readyState == 4) {
simp_audio.removeEventListener('timeupdate', simp_initTime);
simp_audio.pause();
}
});
addEventListener_multi(simp_progress, 'touchend mouseup', function(e) {
if (simp_isStream) {
e.stopPropagation();
return false;
}
if (simp_audio.readyState == 4) {
simp_audio.currentTime = simp_progress.value * simp_audio.duration / 100;
simp_audio.addEventListener('timeupdate', simp_initTime);
if (simp_isPlaying) simp_audio.play();
}
});
}
function simp_loadAudio(elem) {
simp_progress.parentNode.classList.add('simp-loading');
simp_controls.querySelector('.simp-plause').disabled = true;
simp_audio.querySelector('source').src = elem.dataset.src;
simp_audio.load();
simp_audio.volume = parseFloat(simp_v_num / 100); //based on valume input value
simp_audio.addEventListener('canplaythrough', simp_initAudio); //play audio without stop for buffering
// if audio fails to load, only IE/Edge 9.0 or above
simp_audio.addEventListener('error', function() {
alert('Please reload the page.');
});
}
function simp_setAlbum(index) {
simp_cover.innerHTML = simp_a_url[index].dataset.cover ? '
' : '
';
simp_title.innerHTML = simp_source[index].querySelector('.simp-source').innerHTML;
simp_artist.innerHTML = simp_source[index].querySelector('.simp-desc') ? simp_source[index].querySelector('.simp-desc').innerHTML : '';
}
function simp_changeAudio(elem) {
simp_isLoaded = false;
simp_controls.querySelector('.simp-prev').disabled = simp_a_index == 0 ? true : false;
simp_controls.querySelector('.simp-plause').disabled = simp_auto_load ? true : false;
simp_controls.querySelector('.simp-next').disabled = simp_a_index == simp_a_url.length-1 ? true : false;
simp_progress.parentNode.classList.add('simp-load');
simp_progress.disabled = true;
simp_progress.value = 0;
simp_controls.querySelector('.start-time').innerHTML = '00:00';
simp_controls.querySelector('.end-time').innerHTML = '00:00';
elem = simp_isRandom && simp_isNext ? simp_a_url[getRandom(0, simp_a_url.length-1)] : elem;
// playlist, audio is running
for (var i = 0; i < simp_a_url.length; i++) {
simp_a_url[i].parentNode.classList.remove('simp-active');
if (simp_a_url[i] == elem) {
simp_a_index = i;
simp_a_url[i].parentNode.classList.add('simp-active');
}
}
// scrolling to element inside element
var simp_active = getRelativePos(simp_source[simp_a_index]);
simp_source[simp_a_index].parentNode.scrollTop = simp_active.top;
if (simp_auto_load || simp_isPlaying) simp_loadAudio(elem);
if (simp_isPlaying) {
simp_controls.querySelector('.simp-plause').classList.remove('fa-play');
simp_controls.querySelector('.simp-plause').classList.add('fa-pause');
}
}
function simp_startScript() {
ap_simp = document.querySelector('#simp');
simp_audio = ap_simp.querySelector('#audio');
simp_album = ap_simp.querySelector('.simp-album');
simp_cover = simp_album.querySelector('.simp-cover');
simp_title = simp_album.querySelector('.simp-title');
simp_artist = simp_album.querySelector('.simp-artist');
simp_controls = ap_simp.querySelector('.simp-controls');
simp_progress = simp_controls.querySelector('.simp-progress');
simp_volume = simp_controls.querySelector('.simp-volume');
simp_v_slider = simp_volume.querySelector('.simp-v-slider');
simp_v_num = simp_v_slider.value; //default volume
simp_others = simp_controls.querySelector('.simp-others');
simp_auto_load = simp_config.auto_load; //auto load audio file
if (simp_config.shide_top) simp_album.parentNode.classList.toggle('simp-hide');
if (simp_config.shide_btm) {
simp_playlist.classList.add('simp-display');
simp_playlist.classList.toggle('simp-hide');
}
if (simp_a_url.length <= 1) {
simp_controls.querySelector('.simp-prev').style.display = 'none';
simp_controls.querySelector('.simp-next').style.display = 'none';
simp_others.querySelector('.simp-plext').style.display = 'none';
simp_others.querySelector('.simp-random').style.display = 'none';
}
// Playlist listeners
simp_source.forEach(function(item, index) {
if (item.classList.contains('simp-active')) simp_a_index = index; //playlist contains '.simp-active'
item.addEventListener('click', function() {
simp_audio.removeEventListener('timeupdate', simp_initTime);
simp_a_index = index;
simp_changeAudio(this.querySelector('.simp-source'));
simp_setAlbum(simp_a_index);
});
});
// FIRST AUDIO LOAD =======
simp_changeAudio(simp_a_url[simp_a_index]);
simp_setAlbum(simp_a_index);
// FIRST AUDIO LOAD =======
// Controls listeners
simp_controls.querySelector('.simp-plauseward').addEventListener('click', function(e) {
var eles = e.target.classList;
if (eles.contains('simp-plause')) {
if (simp_audio.paused) {
if (!simp_isLoaded) simp_loadAudio(simp_a_url[simp_a_index]);
simp_audio.play();
simp_isPlaying = true;
eles.remove('fa-play');
eles.add('fa-pause');
} else {
simp_audio.pause();
simp_isPlaying = false;
eles.remove('fa-pause');
eles.add('fa-play');
}
} else {
if (eles.contains('simp-prev') && simp_a_index != 0) {
simp_a_index = simp_a_index-1;
e.target.disabled = simp_a_index == 0 ? true : false;
} else if (eles.contains('simp-next') && simp_a_index != simp_a_url.length-1) {
simp_a_index = simp_a_index+1;
e.target.disabled = simp_a_index == simp_a_url.length-1 ? true : false;
}
simp_audio.removeEventListener('timeupdate', simp_initTime);
simp_changeAudio(simp_a_url[simp_a_index]);
simp_setAlbum(simp_a_index);
}
});
// Audio volume
simp_volume.addEventListener('click', function(e) {
var eles = e.target.classList;
if (eles.contains('simp-mute')) {
if (eles.contains('fa-volume-up')) {
eles.remove('fa-volume-up');
eles.add('fa-volume-off');
simp_v_slider.value = 0;
} else {
eles.remove('fa-volume-off');
eles.add('fa-volume-up');
simp_v_slider.value = simp_v_num;
}
} else {
simp_v_num = simp_v_slider.value;
if (simp_v_num != 0) {
simp_controls.querySelector('.simp-mute').classList.remove('fa-volume-off');
simp_controls.querySelector('.simp-mute').classList.add('fa-volume-up');
}
}
simp_audio.volume = parseFloat(simp_v_slider.value / 100);
});
// Others
simp_others.addEventListener('click', function(e) {
var eles = e.target.classList;
if (eles.contains('simp-plext')) {
simp_isNext = simp_isNext && !simp_isRandom ? false : true;
if (!simp_isRandom) simp_isRanext = simp_isRanext ? false : true;
eles.contains('simp-active') && !simp_isRandom ? eles.remove('simp-active') : eles.add('simp-active');
} else if (eles.contains('simp-random')) {
simp_isRandom = simp_isRandom ? false : true;
if (simp_isNext && !simp_isRanext) {
simp_isNext = false;
simp_others.querySelector('.simp-plext').classList.remove('simp-active');
} else {
simp_isNext = true;
simp_others.querySelector('.simp-plext').classList.add('simp-active');
}
eles.contains('simp-active') ? eles.remove('simp-active') : eles.add('simp-active');
} else if (eles.contains('simp-shide-top')) {
simp_album.parentNode.classList.toggle('simp-hide');
} else if (eles.contains('simp-shide-bottom')) {
simp_playlist.classList.add('simp-display');
simp_playlist.classList.toggle('simp-hide');
}
});
}
// Start simple player
if (document.querySelector('#simp')) {
var simp_auto_load, simp_audio, simp_album, simp_cover, simp_title, simp_artist, simp_controls, simp_progress, simp_volume, simp_v_slider, simp_v_num, simp_others;
var ap_simp = document.querySelector('#simp');
var simp_playlist = ap_simp.querySelector('.simp-playlist');
var simp_source = simp_playlist.querySelectorAll('li');
var simp_a_url = simp_playlist.querySelectorAll('[data-src]');
var simp_a_index = 0;
var simp_isPlaying = false;
var simp_isNext = true; //auto play
var simp_isRandom = false; //play random
var simp_isRanext = false; //check if before random starts, simp_isNext value is true
var simp_isStream = false; //radio streaming
var simp_isLoaded = false; //audio file has loaded
var simp_config = ap_simp.dataset.config ? JSON.parse(ap_simp.dataset.config) : {
shide_top: false, //show/hide album
shide_btm: false, //show/hide playlist
auto_load: false //auto load audio file
};
var simp_elem = '';
simp_elem += '
';
simp_elem += '
';
simp_elem += '
';
simp_elem += '
';
simp_elem += '
';
simp_elem += '
00:00 / 00:00
';
simp_elem += '
';
simp_elem += '
';
simp_elem += '
'; //simp-controls
var simp_player = document.createElement('div');
simp_player.classList.add('simp-player');
simp_player.innerHTML = simp_elem;
ap_simp.insertBefore(simp_player, simp_playlist);
simp_startScript();
}
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