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negromate/web/static/js/videojs-playlist/dist/videojs-playlist.js

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/*! @name videojs-playlist @version 4.2.6 @license Apache-2.0 */
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('video.js')) :
typeof define === 'function' && define.amd ? define(['video.js'], factory) :
(global.videojsPlaylist = factory(global.videojs));
}(this, (function (videojs) { 'use strict';
videojs = videojs && videojs.hasOwnProperty('default') ? videojs['default'] : videojs;
/**
* Validates a number of seconds to use as the auto-advance delay.
*
* @private
* @param {number} s
* The number to check
*
* @return {boolean}
* Whether this is a valid second or not
*/
var validSeconds = function validSeconds(s) {
return typeof s === 'number' && !isNaN(s) && s >= 0 && s < Infinity;
};
/**
* Resets the auto-advance behavior of a player.
*
* @param {Player} player
* The player to reset the behavior on
*/
var reset = function reset(player) {
var aa = player.playlist.autoadvance_;
if (aa.timeout) {
player.clearTimeout(aa.timeout);
}
if (aa.trigger) {
player.off('ended', aa.trigger);
}
aa.timeout = null;
aa.trigger = null;
};
/**
* Sets up auto-advance behavior on a player.
*
* @param {Player} player
* the current player
*
* @param {number} delay
* The number of seconds to wait before each auto-advance.
*
* @return {undefined}
* Used to short circuit function logic
*/
var setup = function setup(player, delay) {
reset(player); // Before queuing up new auto-advance behavior, check if `seconds` was
// called with a valid value.
if (!validSeconds(delay)) {
player.playlist.autoadvance_.delay = null;
return;
}
player.playlist.autoadvance_.delay = delay;
player.playlist.autoadvance_.trigger = function () {
// This calls setup again, which will reset the existing auto-advance and
// set up another auto-advance for the next "ended" event.
var cancelOnPlay = function cancelOnPlay() {
return setup(player, delay);
}; // If there is a "play" event while we're waiting for an auto-advance,
// we need to cancel the auto-advance. This could mean the user seeked
// back into the content or restarted the content. This is reproducible
// with an auto-advance > 0.
player.one('play', cancelOnPlay);
player.playlist.autoadvance_.timeout = player.setTimeout(function () {
reset(player);
player.off('play', cancelOnPlay);
player.playlist.next();
}, delay * 1000);
};
player.one('ended', player.playlist.autoadvance_.trigger);
};
/**
* Removes all remote text tracks from a player.
*
* @param {Player} player
* The player to clear tracks on
*/
var clearTracks = function clearTracks(player) {
var tracks = player.remoteTextTracks();
var i = tracks && tracks.length || 0; // This uses a `while` loop rather than `forEach` because the
// `TextTrackList` object is a live DOM list (not an array).
while (i--) {
player.removeRemoteTextTrack(tracks[i]);
}
};
/**
* Plays an item on a player's playlist.
*
* @param {Player} player
* The player to play the item on
*
* @param {Object} item
* A source from the playlist.
*
* @return {Player}
* The player that is now playing the item
*/
var playItem = function playItem(player, item) {
var replay = !player.paused() || player.ended();
player.trigger('beforeplaylistitem', item);
player.poster(item.poster || '');
player.src(item.sources);
clearTracks(player);
player.ready(function () {
(item.textTracks || []).forEach(player.addRemoteTextTrack.bind(player));
player.trigger('playlistitem', item);
if (replay) {
var playPromise = player.play(); // silence error when a pause interrupts a play request
// on browsers which return a promise
if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {
playPromise.then(null, function (e) {});
}
}
setup(player, player.playlist.autoadvance_.delay);
});
return player;
};
/**
* Given two sources, check to see whether the two sources are equal.
* If both source urls have a protocol, the protocols must match, otherwise, protocols
* are ignored.
*
* @private
* @param {string|Object} source1
* The first source
*
* @param {string|Object} source2
* The second source
*
* @return {boolean}
* The result
*/
var sourceEquals = function sourceEquals(source1, source2) {
var src1 = source1;
var src2 = source2;
if (typeof source1 === 'object') {
src1 = source1.src;
}
if (typeof source2 === 'object') {
src2 = source2.src;
}
if (/^\/\//.test(src1)) {
src2 = src2.slice(src2.indexOf('//'));
}
if (/^\/\//.test(src2)) {
src1 = src1.slice(src1.indexOf('//'));
}
return src1 === src2;
};
/**
* Look through an array of playlist items for a specific `source`;
* checking both the value of elements and the value of their `src`
* property.
*
* @private
* @param {Array} arr
* An array of playlist items to look through
*
* @param {string} src
* The source to look for
*
* @return {number}
* The index of that source or -1
*/
var indexInSources = function indexInSources(arr, src) {
for (var i = 0; i < arr.length; i++) {
var sources = arr[i].sources;
if (Array.isArray(sources)) {
for (var j = 0; j < sources.length; j++) {
var source = sources[j];
if (source && sourceEquals(source, src)) {
return i;
}
}
}
}
return -1;
};
/**
* Randomize the contents of an array.
*
* @private
* @param {Array} arr
* An array.
*
* @return {Array}
* The same array that was passed in.
*/
var randomize = function randomize(arr) {
var index = -1;
var lastIndex = arr.length - 1;
while (++index < arr.length) {
var rand = index + Math.floor(Math.random() * (lastIndex - index + 1));
var value = arr[rand];
arr[rand] = arr[index];
arr[index] = value;
}
return arr;
};
/**
* Factory function for creating new playlist implementation on the given player.
*
* API summary:
*
* playlist(['a', 'b', 'c']) // setter
* playlist() // getter
* playlist.currentItem() // getter, 0
* playlist.currentItem(1) // setter, 1
* playlist.next() // 'c'
* playlist.previous() // 'b'
* playlist.first() // 'a'
* playlist.last() // 'c'
* playlist.autoadvance(5) // 5 second delay
* playlist.autoadvance() // cancel autoadvance
*
* @param {Player} player
* The current player
*
* @param {Array=} initialList
* If given, an initial list of sources with which to populate
* the playlist.
*
* @param {number=} initialIndex
* If given, the index of the item in the list that should
* be loaded first. If -1, no video is loaded. If omitted, The
* the first video is loaded.
*
* @return {Function}
* Returns the playlist function specific to the given player.
*/
function factory(player, initialList, initialIndex) {
if (initialIndex === void 0) {
initialIndex = 0;
}
var list = null;
var changing = false;
/**
* Get/set the playlist for a player.
*
* This function is added as an own property of the player and has its
* own methods which can be called to manipulate the internal state.
*
* @param {Array} [newList]
* If given, a new list of sources with which to populate the
* playlist. Without this, the function acts as a getter.
*
* @param {number} [newIndex]
* If given, the index of the item in the list that should
* be loaded first. If -1, no video is loaded. If omitted, The
* the first video is loaded.
*
* @return {Array}
* The playlist
*/
var playlist = player.playlist = function (newList, newIndex) {
if (newIndex === void 0) {
newIndex = 0;
}
if (changing) {
throw new Error('do not call playlist() during a playlist change');
}
if (Array.isArray(newList)) {
// @todo - Simplify this to `list.slice()` for v5.
var previousPlaylist = Array.isArray(list) ? list.slice() : null;
list = newList.slice(); // Mark the playlist as changing during the duringplaylistchange lifecycle.
changing = true;
player.trigger({
type: 'duringplaylistchange',
nextIndex: newIndex,
nextPlaylist: list,
previousIndex: playlist.currentIndex_,
// @todo - Simplify this to simply pass along `previousPlaylist` for v5.
previousPlaylist: previousPlaylist || []
});
changing = false;
if (newIndex !== -1) {
playlist.currentItem(newIndex);
} // The only time the previous playlist is null is the first call to this
// function. This allows us to fire the `duringplaylistchange` event
// every time the playlist is populated and to maintain backward
// compatibility by not firing the `playlistchange` event on the initial
// population of the list.
//
// @todo - Remove this condition in preparation for v5.
if (previousPlaylist) {
player.setTimeout(function () {
player.trigger('playlistchange');
}, 0);
}
} // Always return a shallow clone of the playlist list.
return list.slice();
}; // On a new source, if there is no current item, disable auto-advance.
player.on('loadstart', function () {
if (playlist.currentItem() === -1) {
reset(player);
}
});
playlist.currentIndex_ = -1;
playlist.player_ = player;
playlist.autoadvance_ = {};
playlist.repeat_ = false;
/**
* Get or set the current item in the playlist.
*
* During the duringplaylistchange event, acts only as a getter.
*
* @param {number} [index]
* If given as a valid value, plays the playlist item at that index.
*
* @return {number}
* The current item index.
*/
playlist.currentItem = function (index) {
// If the playlist is changing, only act as a getter.
if (changing) {
return playlist.currentIndex_;
}
if (typeof index === 'number' && playlist.currentIndex_ !== index && index >= 0 && index < list.length) {
playlist.currentIndex_ = index;
playItem(playlist.player_, list[playlist.currentIndex_]);
} else {
playlist.currentIndex_ = playlist.indexOf(playlist.player_.currentSrc() || '');
}
return playlist.currentIndex_;
};
/**
* Checks if the playlist contains a value.
*
* @param {string|Object|Array} value
* The value to check
*
* @return {boolean}
* The result
*/
playlist.contains = function (value) {
return playlist.indexOf(value) !== -1;
};
/**
* Gets the index of a value in the playlist or -1 if not found.
*
* @param {string|Object|Array} value
* The value to find the index of
*
* @return {number}
* The index or -1
*/
playlist.indexOf = function (value) {
if (typeof value === 'string') {
return indexInSources(list, value);
}
var sources = Array.isArray(value) ? value : value.sources;
for (var i = 0; i < sources.length; i++) {
var source = sources[i];
if (typeof source === 'string') {
return indexInSources(list, source);
} else if (source.src) {
return indexInSources(list, source.src);
}
}
return -1;
};
/**
* Get the index of the current item in the playlist. This is identical to
* calling `currentItem()` with no arguments.
*
* @return {number}
* The current item index.
*/
playlist.currentIndex = function () {
return playlist.currentItem();
};
/**
* Get the index of the last item in the playlist.
*
* @return {number}
* The index of the last item in the playlist or -1 if there are no
* items.
*/
playlist.lastIndex = function () {
return list.length - 1;
};
/**
* Get the index of the next item in the playlist.
*
* @return {number}
* The index of the next item in the playlist or -1 if there is no
* current item.
*/
playlist.nextIndex = function () {
var current = playlist.currentItem();
if (current === -1) {
return -1;
}
var lastIndex = playlist.lastIndex(); // When repeating, loop back to the beginning on the last item.
if (playlist.repeat_ && current === lastIndex) {
return 0;
} // Don't go past the end of the playlist.
return Math.min(current + 1, lastIndex);
};
/**
* Get the index of the previous item in the playlist.
*
* @return {number}
* The index of the previous item in the playlist or -1 if there is
* no current item.
*/
playlist.previousIndex = function () {
var current = playlist.currentItem();
if (current === -1) {
return -1;
} // When repeating, loop back to the end of the playlist.
if (playlist.repeat_ && current === 0) {
return playlist.lastIndex();
} // Don't go past the beginning of the playlist.
return Math.max(current - 1, 0);
};
/**
* Plays the first item in the playlist.
*
* @return {Object|undefined}
* Returns undefined and has no side effects if the list is empty.
*/
playlist.first = function () {
if (changing) {
return;
}
if (list.length) {
return list[playlist.currentItem(0)];
}
playlist.currentIndex_ = -1;
};
/**
* Plays the last item in the playlist.
*
* @return {Object|undefined}
* Returns undefined and has no side effects if the list is empty.
*/
playlist.last = function () {
if (changing) {
return;
}
if (list.length) {
return list[playlist.currentItem(playlist.lastIndex())];
}
playlist.currentIndex_ = -1;
};
/**
* Plays the next item in the playlist.
*
* @return {Object|undefined}
* Returns undefined and has no side effects if on last item.
*/
playlist.next = function () {
if (changing) {
return;
}
var index = playlist.nextIndex();
if (index !== playlist.currentIndex_) {
return list[playlist.currentItem(index)];
}
};
/**
* Plays the previous item in the playlist.
*
* @return {Object|undefined}
* Returns undefined and has no side effects if on first item.
*/
playlist.previous = function () {
if (changing) {
return;
}
var index = playlist.previousIndex();
if (index !== playlist.currentIndex_) {
return list[playlist.currentItem(index)];
}
};
/**
* Set up auto-advance on the playlist.
*
* @param {number} [delay]
* The number of seconds to wait before each auto-advance.
*/
playlist.autoadvance = function (delay) {
setup(playlist.player_, delay);
};
/**
* Sets `repeat` option, which makes the "next" video of the last video in
* the playlist be the first video in the playlist.
*
* @param {boolean} [val]
* The value to set repeat to
*
* @return {boolean}
* The current value of repeat
*/
playlist.repeat = function (val) {
if (val === undefined) {
return playlist.repeat_;
}
if (typeof val !== 'boolean') {
videojs.log.error('videojs-playlist: Invalid value for repeat', val);
return;
}
playlist.repeat_ = !!val;
return playlist.repeat_;
};
/**
* Sorts the playlist array.
*
* @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort}
* @fires playlistsorted
*
* @param {Function} compare
* A comparator function as per the native Array method.
*/
playlist.sort = function (compare) {
// Bail if the array is empty.
if (!list.length) {
return;
}
list.sort(compare); // If the playlist is changing, don't trigger events.
if (changing) {
return;
}
/**
* Triggered after the playlist is sorted internally.
*
* @event playlistsorted
* @type {Object}
*/
player.trigger('playlistsorted');
};
/**
* Reverses the playlist array.
*
* @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse}
* @fires playlistsorted
*/
playlist.reverse = function () {
// Bail if the array is empty.
if (!list.length) {
return;
}
list.reverse(); // If the playlist is changing, don't trigger events.
if (changing) {
return;
}
/**
* Triggered after the playlist is sorted internally.
*
* @event playlistsorted
* @type {Object}
*/
player.trigger('playlistsorted');
};
/**
* Shuffle the contents of the list randomly.
*
* @see {@link https://github.com/lodash/lodash/blob/40e096b6d5291a025e365a0f4c010d9a0efb9a69/shuffle.js}
* @fires playlistsorted
* @todo Make the `rest` option default to `true` in v5.0.0.
* @param {Object} [options]
* An object containing shuffle options.
*
* @param {boolean} [options.rest = false]
* By default, the entire playlist is randomized. However, this may
* not be desirable in all cases, such as when a user is already
* watching a video.
*
* When `true` is passed for this option, it will only shuffle
* playlist items after the current item. For example, when on the
* first item, will shuffle the second item and beyond.
*/
playlist.shuffle = function (_temp) {
var _ref = _temp === void 0 ? {} : _temp,
rest = _ref.rest;
var index = 0;
var arr = list; // When options.rest is true, start randomization at the item after the
// current item.
if (rest) {
index = playlist.currentIndex_ + 1;
arr = list.slice(index);
} // Bail if the array is empty or too short to shuffle.
if (arr.length <= 1) {
return;
}
randomize(arr); // When options.rest is true, splice the randomized sub-array back into
// the original array.
if (rest) {
var _list;
(_list = list).splice.apply(_list, [index, arr.length].concat(arr));
} // If the playlist is changing, don't trigger events.
if (changing) {
return;
}
/**
* Triggered after the playlist is sorted internally.
*
* @event playlistsorted
* @type {Object}
*/
player.trigger('playlistsorted');
}; // If an initial list was given, populate the playlist with it.
if (Array.isArray(initialList)) {
playlist(initialList.slice(), initialIndex); // If there is no initial list given, silently set an empty array.
} else {
list = [];
}
return playlist;
}
var version = "4.2.6";
var registerPlugin = videojs.registerPlugin || videojs.plugin;
/**
* The video.js playlist plugin. Invokes the playlist-maker to create a
* playlist function on the specific player.
*
* @param {Array} list
* a list of sources
*
* @param {number} item
* The index to start at
*/
var plugin = function plugin(list, item) {
factory(this, list, item);
};
registerPlugin('playlist', plugin);
plugin.VERSION = version;
return plugin;
})));
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