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popcorn.js
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popcorn.js
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(function(global, document) {
// Popcorn.js does not support archaic browsers
if ( !document.addEventListener ) {
global.Popcorn = {
isSupported: false
};
var methods = ( "byId forEach extend effects error guid sizeOf isArray nop position disable enable destroy" +
"addTrackEvent removeTrackEvent getTrackEvents getTrackEvent getLastTrackEventId " +
"timeUpdate plugin removePlugin compose effect xhr getJSONP getScript" ).split(/\s+/);
while ( methods.length ) {
global.Popcorn[ methods.shift() ] = function() {};
}
return;
}
var
AP = Array.prototype,
OP = Object.prototype,
forEach = AP.forEach,
slice = AP.slice,
hasOwn = OP.hasOwnProperty,
toString = OP.toString,
// Copy global Popcorn (may not exist)
_Popcorn = global.Popcorn,
// Ready fn cache
readyStack = [],
readyBound = false,
readyFired = false,
// Non-public internal data object
internal = {
events: {
hash: {},
apis: {}
}
},
// Non-public `requestAnimFrame`
// http://paulirish.com/2011/requestanimationframe-for-smart-animating/
requestAnimFrame = (function(){
return global.requestAnimationFrame ||
global.webkitRequestAnimationFrame ||
global.mozRequestAnimationFrame ||
global.oRequestAnimationFrame ||
global.msRequestAnimationFrame ||
function( callback, element ) {
global.setTimeout( callback, 0 );
};
}()),
// Non-public `getKeys`, return an object's keys as an array
getKeys = function( obj ) {
return Object.keys ? Object.keys( obj ) : (function( obj ) {
var item,
list = [];
for ( item in obj ) {
if ( hasOwn.call( obj, item ) ) {
list.push( item );
}
}
return list;
})( obj );
},
Abstract = {
// [[Put]] props from dictionary onto |this|
// MUST BE CALLED FROM WITHIN A CONSTRUCTOR:
// Abstract.put.call( this, dictionary );
put: function( dictionary ) {
// For each own property of src, let key be the property key
// and desc be the property descriptor of the property.
for ( var key in dictionary ) {
if ( dictionary.hasOwnProperty( key ) ) {
this[ key ] = dictionary[ key ];
}
}
}
},
// Declare constructor
// Returns an instance object.
Popcorn = function( entity, options ) {
// Return new Popcorn object
return new Popcorn.p.init( entity, options || null );
};
// Popcorn API version, automatically inserted via build system.
Popcorn.version = "@VERSION";
// Boolean flag allowing a client to determine if Popcorn can be supported
Popcorn.isSupported = true;
// Instance caching
Popcorn.instances = [];
// Declare a shortcut (Popcorn.p) to and a definition of
// the new prototype for our Popcorn constructor
Popcorn.p = Popcorn.prototype = {
get interactive() {
return this.data.interactive;
},
set interactive(val) {
this.data.interactive = val;
},
init: function( entity, options ) {
var matches, nodeName,
self = this;
// Supports Popcorn(function () { /../ })
// Originally proposed by Daniel Brooks
if ( typeof entity === "function" ) {
// If document ready has already fired
if ( document.readyState === "complete" ) {
entity( document, Popcorn );
return;
}
// Add `entity` fn to ready stack
readyStack.push( entity );
// This process should happen once per page load
if ( !readyBound ) {
// set readyBound flag
readyBound = true;
var DOMContentLoaded = function() {
readyFired = true;
// Remove global DOM ready listener
document.removeEventListener( "DOMContentLoaded", DOMContentLoaded, false );
// Execute all ready function in the stack
for ( var i = 0, readyStackLength = readyStack.length; i < readyStackLength; i++ ) {
readyStack[ i ].call( document, Popcorn );
}
// GC readyStack
readyStack = null;
};
// Register global DOM ready listener
document.addEventListener( "DOMContentLoaded", DOMContentLoaded, false );
}
return;
}
if ( typeof entity === "string" ) {
try {
matches = document.querySelector( entity );
} catch( e ) {
throw new Error( "Popcorn.js Error: Invalid media element selector: " + entity );
}
}
// Get media element by id or object reference
this.media = matches || entity;
// inner reference to this media element's nodeName string value
nodeName = ( this.media.nodeName && this.media.nodeName.toLowerCase() ) || "video";
// Create an audio or video element property reference
this[ nodeName ] = this.media;
this.options = Popcorn.extend( {}, options ) || {};
// Resolve custom ID or default prefixed ID
this.id = this.options.id || Popcorn.guid( nodeName );
// Throw if an attempt is made to use an ID that already exists
// TODO: resolve this issue correctly
/*
if ( Popcorn.byId( this.id ) ) {
throw new Error( "Popcorn.js Error: Cannot use duplicate ID (" + this.id + ")" );
}
*/
this.isDestroyed = false;
this.data = {
// to allow user interact with popcorn instance with play/pause
interactive: true,
// data structure of all
running: {
cue: []
},
// Executed by either timeupdate event or in rAF loop
timeUpdate: Popcorn.nop,
// Allows disabling a plugin per instance
disabled: {},
// Stores DOM event queues by type
events: {},
// Stores Special event hooks data
hooks: {},
// Store track event history data
history: [],
// Stores ad-hoc state related data]
state: {
volume: this.media.volume
},
// Store track event object references by trackId
trackRefs: {},
// Playback track event queues
trackEvents: new TrackEvents( this )
};
// Register new instance
Popcorn.instances.push( this );
// function to fire when video is ready
var isReady = function() {
// chrome bug: http://code.google.com/p/chromium/issues/detail?id=119598
// it is possible the video's time is less than 0
// this has the potential to call track events more than once, when they should not
// start: 0, end: 1 will start, end, start again, when it should just start
// just setting it to 0 if it is below 0 fixes this issue
if ( self.media.currentTime < 0 ) {
self.media.currentTime = 0;
}
self.media.removeEventListener( "loadedmetadata", isReady, false );
var duration, videoDurationPlus,
runningPlugins, runningPlugin, rpLength, rpNatives;
// Adding padding to the front and end of the arrays
// this is so we do not fall off either end
duration = self.media.duration;
// Check for no duration info (NaN)
videoDurationPlus = duration != duration ? Number.MAX_VALUE : duration + 1;
Popcorn.addTrackEvent( self, {
start: videoDurationPlus,
end: videoDurationPlus
});
if ( !self.isDestroyed ) {
self.data.durationChange = function() {
var newDuration = self.media.duration,
newDurationPlus = newDuration + 1,
byStart = self.data.trackEvents.byStart,
byEnd = self.data.trackEvents.byEnd;
// Remove old padding events
byStart.pop();
byEnd.pop();
// Remove any internal tracking of events that have end times greater than duration
// otherwise their end events will never be hit.
for ( var k = byEnd.length - 1; k > 0; k-- ) {
if ( byEnd[ k ].end > newDuration ) {
self.removeTrackEvent( byEnd[ k ]._id );
}
}
// Remove any internal tracking of events that have end times greater than duration
// otherwise their end events will never be hit.
for ( var i = 0; i < byStart.length; i++ ) {
if ( byStart[ i ].end > newDuration ) {
self.removeTrackEvent( byStart[ i ]._id );
}
}
// References to byEnd/byStart are reset, so accessing it this way is
// forced upon us.
self.data.trackEvents.byEnd.push({
start: newDurationPlus,
end: newDurationPlus
});
self.data.trackEvents.byStart.push({
start: newDurationPlus,
end: newDurationPlus
});
};
// Listen for duration changes and adjust internal tracking of event timings
self.media.addEventListener( "durationchange", self.data.durationChange, false );
}
if ( self.options.frameAnimation ) {
// if Popcorn is created with frameAnimation option set to true,
// requestAnimFrame is used instead of "timeupdate" media event.
// This is for greater frame time accuracy, theoretically up to
// 60 frames per second as opposed to ~4 ( ~every 15-250ms)
self.data.timeUpdate = function () {
Popcorn.timeUpdate( self, {} );
// fire frame for each enabled active plugin of every type
Popcorn.forEach( Popcorn.manifest, function( key, val ) {
runningPlugins = self.data.running[ val ];
// ensure there are running plugins on this type on this instance
if ( runningPlugins ) {
rpLength = runningPlugins.length;
for ( var i = 0; i < rpLength; i++ ) {
runningPlugin = runningPlugins[ i ];
rpNatives = runningPlugin._natives;
rpNatives && rpNatives.frame &&
rpNatives.frame.call( self, {}, runningPlugin, self.currentTime() );
}
}
});
self.emit( "timeupdate" );
!self.isDestroyed && requestAnimFrame( self.data.timeUpdate );
};
!self.isDestroyed && requestAnimFrame( self.data.timeUpdate );
} else {
self.data.timeUpdate = function( event ) {
Popcorn.timeUpdate( self, event );
};
if ( !self.isDestroyed ) {
self.media.addEventListener( "timeupdate", self.data.timeUpdate, false );
}
}
};
self.media.addEventListener( "error", function() {
self.error = self.media.error;
}, false );
// http://www.whatwg.org/specs/web-apps/current-work/#dom-media-readystate
//
// If media is in readyState (rS) >= 1, we know the media's duration,
// which is required before running the isReady function.
// If rS is 0, attach a listener for "loadedmetadata",
// ( Which indicates that the media has moved from rS 0 to 1 )
//
// This has been changed from a check for rS 2 because
// in certain conditions, Firefox can enter this code after dropping
// to rS 1 from a higher state such as 2 or 3. This caused a "loadeddata"
// listener to be attached to the media object, an event that had
// already triggered and would not trigger again. This left Popcorn with an
// instance that could never start a timeUpdate loop.
if ( self.media.readyState >= 1 ) {
isReady();
} else {
self.media.addEventListener( "loadedmetadata", isReady, false );
}
return this;
}
};
// Extend constructor prototype to instance prototype
// Allows chaining methods to instances
Popcorn.p.init.prototype = Popcorn.p;
Popcorn.byId = function( str ) {
var instances = Popcorn.instances,
length = instances.length,
i = 0;
for ( ; i < length; i++ ) {
if ( instances[ i ].id === str ) {
return instances[ i ];
}
}
return null;
};
Popcorn.forEach = function( obj, fn, context ) {
if ( !obj || !fn ) {
return {};
}
context = context || this;
var key, len;
// Use native whenever possible
if ( forEach && obj.forEach === forEach ) {
return obj.forEach( fn, context );
}
if ( toString.call( obj ) === "[object NodeList]" ) {
for ( key = 0, len = obj.length; key < len; key++ ) {
fn.call( context, obj[ key ], key, obj );
}
return obj;
}
for ( key in obj ) {
if ( hasOwn.call( obj, key ) ) {
fn.call( context, obj[ key ], key, obj );
}
}
return obj;
};
Popcorn.extend = function( obj ) {
var dest = obj, src = slice.call( arguments, 1 );
Popcorn.forEach( src, function( copy ) {
for ( var prop in copy ) {
dest[ prop ] = copy[ prop ];
}
});
return dest;
};
// A Few reusable utils, memoized onto Popcorn
Popcorn.extend( Popcorn, {
noConflict: function( deep ) {
if ( deep ) {
global.Popcorn = _Popcorn;
}
return Popcorn;
},
error: function( msg ) {
throw new Error( msg );
},
guid: function( prefix ) {
Popcorn.guid.counter++;
return ( prefix ? prefix : "" ) + ( +new Date() + Popcorn.guid.counter );
},
sizeOf: function( obj ) {
var size = 0;
for ( var prop in obj ) {
size++;
}
return size;
},
isArray: Array.isArray || function( array ) {
return toString.call( array ) === "[object Array]";
},
nop: function() {},
position: function( elem ) {
if ( !elem.parentNode ) {
return null;
}
var clientRect = elem.getBoundingClientRect(),
bounds = {},
doc = elem.ownerDocument,
docElem = document.documentElement,
body = document.body,
clientTop, clientLeft, scrollTop, scrollLeft, top, left;
// Determine correct clientTop/Left
clientTop = docElem.clientTop || body.clientTop || 0;
clientLeft = docElem.clientLeft || body.clientLeft || 0;
// Determine correct scrollTop/Left
scrollTop = ( global.pageYOffset && docElem.scrollTop || body.scrollTop );
scrollLeft = ( global.pageXOffset && docElem.scrollLeft || body.scrollLeft );
// Temp top/left
top = Math.ceil( clientRect.top + scrollTop - clientTop );
left = Math.ceil( clientRect.left + scrollLeft - clientLeft );
for ( var p in clientRect ) {
bounds[ p ] = Math.round( clientRect[ p ] );
}
return Popcorn.extend({}, bounds, { top: top, left: left });
},
disable: function( instance, plugin ) {
if ( instance.data.disabled[ plugin ] ) {
return;
}
instance.data.disabled[ plugin ] = true;
if ( plugin in Popcorn.registryByName &&
instance.data.running[ plugin ] ) {
for ( var i = instance.data.running[ plugin ].length - 1, event; i >= 0; i-- ) {
event = instance.data.running[ plugin ][ i ];
event._natives.end.call( instance, null, event );
instance.emit( "trackend",
Popcorn.extend({}, event, {
plugin: event.type,
type: "trackend"
})
);
}
}
return instance;
},
enable: function( instance, plugin ) {
if ( !instance.data.disabled[ plugin ] ) {
return;
}
instance.data.disabled[ plugin ] = false;
if ( plugin in Popcorn.registryByName &&
instance.data.running[ plugin ] ) {
for ( var i = instance.data.running[ plugin ].length - 1, event; i >= 0; i-- ) {
event = instance.data.running[ plugin ][ i ];
event._natives.start.call( instance, null, event );
instance.emit( "trackstart",
Popcorn.extend({}, event, {
plugin: event.type,
type: "trackstart",
track: event
})
);
}
}
return instance;
},
destroy: function( instance ) {
var events = instance.data.events,
trackEvents = instance.data.trackEvents,
singleEvent, item, fn, plugin;
// Iterate through all events and remove them
for ( item in events ) {
singleEvent = events[ item ];
for ( fn in singleEvent ) {
delete singleEvent[ fn ];
}
events[ item ] = null;
}
// remove all plugins off the given instance
for ( plugin in Popcorn.registryByName ) {
Popcorn.removePlugin( instance, plugin );
}
// Remove all data.trackEvents #1178
trackEvents.byStart.length = 0;
trackEvents.byEnd.length = 0;
if ( !instance.isDestroyed ) {
instance.data.timeUpdate && instance.media.removeEventListener( "timeupdate", instance.data.timeUpdate, false );
instance.isDestroyed = true;
}
Popcorn.instances.splice( Popcorn.instances.indexOf( instance ), 1 );
}
});
// Memoized GUID Counter
Popcorn.guid.counter = 1;
// Factory to implement getters, setters and controllers
// as Popcorn instance methods. The IIFE will create and return
// an object with defined methods
Popcorn.extend(Popcorn.p, (function() {
var methods = "load play pause currentTime playbackRate volume duration preload playbackRate " +
"autoplay loop controls muted buffered readyState seeking paused played seekable ended",
ret = {};
var allowedPause = true;
// Build methods, store in object that is returned and passed to extend
Popcorn.forEach( methods.split( /\s+/g ), function( name ) {
ret[ name ] = function( arg ) {
if (name === 'play' && !this.interactive) {
return;
}
var previous;
if ( typeof this.media[ name ] === "function" ) {
// Support for shorthanded play(n)/pause(n) jump to currentTime
// If arg is not null or undefined and called by one of the
// allowed shorthandable methods, then set the currentTime
// Supports time as seconds or SMPTE
if ( arg != null && /play|pause/.test( name ) ) {
this.media.currentTime = Popcorn.util.toSeconds( arg );
}
const _this = this;
if (/play/.test(name) ) {
allowedPause = false;
const promise = this.media[ name ]();
if (promise) {
promise.then(function () {
allowedPause = true;
console.info('play');
return _this;
}).catch(function (error) {
allowedPause = true;
_this.media.pause();
console.error(error);
return _this;
})
} else {
allowedPause = true;
return this;
}
} else if (/pause/.test(name) && !allowedPause) {
return this;
}
this.media[ name ]();
return this;
}
if ( arg != null ) {
// Capture the current value of the attribute property
previous = this.media[ name ];
// Set the attribute property with the new value
this.media[ name ] = arg;
// If the new value is not the same as the old value
// emit an "attrchanged event"
if ( previous !== arg ) {
this.emit( "attrchange", {
attribute: name,
previousValue: previous,
currentValue: arg
});
}
return this;
}
return this.media[ name ];
};
});
return ret;
})()
);
Popcorn.forEach( "enable disable".split(" "), function( method ) {
Popcorn.p[ method ] = function( plugin ) {
return Popcorn[ method ]( this, plugin );
};
});
Popcorn.extend(Popcorn.p, {
// Rounded currentTime
roundTime: function() {
return Math.round( this.media.currentTime );
},
// Attach an event to a single point in time
exec: function( id, time, fn ) {
var length = arguments.length,
eventType = "trackadded",
trackEvent, sec, options;
// Check if first could possibly be a SMPTE string
// p.cue( "smpte string", fn );
// try/catch avoid awful throw in Popcorn.util.toSeconds
// TODO: Get rid of that, replace with NaN return?
try {
sec = Popcorn.util.toSeconds( id );
} catch ( e ) {}
// If it can be converted into a number then
// it's safe to assume that the string was SMPTE
if ( typeof sec === "number" ) {
id = sec;
}
// Shift arguments based on use case
//
// Back compat for:
// p.cue( time, fn );
if ( typeof id === "number" && length === 2 ) {
fn = time;
time = id;
id = Popcorn.guid( "cue" );
} else {
// Support for new forms
// p.cue( "empty-cue" );
if ( length === 1 ) {
// Set a time for an empty cue. It's not important what
// the time actually is, because the cue is a no-op
time = -1;
} else {
// Get the TrackEvent that matches the given id.
trackEvent = this.getTrackEvent( id );
if ( trackEvent ) {
// remove existing cue so a new one can be added via trackEvents.add
this.data.trackEvents.remove( id );
TrackEvent.end( this, trackEvent );
// Update track event references
Popcorn.removeTrackEvent.ref( this, id );
eventType = "cuechange";
// p.cue( "my-id", 12 );
// p.cue( "my-id", function() { ... });
if ( typeof id === "string" && length === 2 ) {
// p.cue( "my-id", 12 );
// The path will update the cue time.
if ( typeof time === "number" ) {
// Re-use existing TrackEvent start callback
fn = trackEvent._natives.start;
}
// p.cue( "my-id", function() { ... });
// The path will update the cue function
if ( typeof time === "function" ) {
fn = time;
// Re-use existing TrackEvent start time
time = trackEvent.start;
}
}
} else {
if ( length >= 2 ) {
// p.cue( "a", "00:00:00");
if ( typeof time === "string" ) {
try {
sec = Popcorn.util.toSeconds( time );
} catch ( e ) {}
time = sec;
}
// p.cue( "b", 11 );
// p.cue( "b", 11, function() {} );
if ( typeof time === "number" ) {
fn = fn || Popcorn.nop();
}
// p.cue( "c", function() {});
if ( typeof time === "function" ) {
fn = time;
time = -1;
}
}
}
}
}
options = {
id: id,
start: time,
end: time + 1,
_running: false,
_natives: {
start: fn || Popcorn.nop,
end: Popcorn.nop,
type: "cue"
}
};
if ( trackEvent ) {
options = Popcorn.extend( trackEvent, options );
}
if ( eventType === "cuechange" ) {
// Supports user defined track event id
options._id = options.id || options._id || Popcorn.guid( options._natives.type );
this.data.trackEvents.add( options );
TrackEvent.start( this, options );
this.timeUpdate( this, null, true );
// Store references to user added trackevents in ref table
Popcorn.addTrackEvent.ref( this, options );
this.emit( eventType, Popcorn.extend({}, options, {
id: id,
type: eventType,
previousValue: {
time: trackEvent.start,
fn: trackEvent._natives.start
},
currentValue: {
time: time,
fn: fn || Popcorn.nop
},
track: trackEvent
}));
} else {
// Creating a one second track event with an empty end
Popcorn.addTrackEvent( this, options );
}
return this;
},
// Mute the calling media, optionally toggle
mute: function( toggle ) {
var event = toggle == null || toggle === true ? "muted" : "unmuted";
// If `toggle` is explicitly `false`,
// unmute the media and restore the volume level
if ( event === "unmuted" ) {
this.media.muted = false;
this.media.volume = this.data.state.volume;
}
// If `toggle` is either null or undefined,
// save the current volume and mute the media element
if ( event === "muted" ) {
this.data.state.volume = this.media.volume;
this.media.muted = true;
}
// Trigger either muted|unmuted event
this.emit( event );
return this;
},
// Convenience method, unmute the calling media
unmute: function( toggle ) {
return this.mute( toggle == null ? false : !toggle );
},
// Get the client bounding box of an instance element
position: function() {
return Popcorn.position( this.media );
},
// Toggle a plugin's playback behaviour (on or off) per instance
toggle: function( plugin ) {
return Popcorn[ this.data.disabled[ plugin ] ? "enable" : "disable" ]( this, plugin );
},
// Set default values for plugin options objects per instance
defaults: function( plugin, defaults ) {
// If an array of default configurations is provided,
// iterate and apply each to this instance
if ( Popcorn.isArray( plugin ) ) {
Popcorn.forEach( plugin, function( obj ) {
for ( var name in obj ) {
this.defaults( name, obj[ name ] );
}
}, this );
return this;
}
if ( !this.options.defaults ) {
this.options.defaults = {};
}
if ( !this.options.defaults[ plugin ] ) {
this.options.defaults[ plugin ] = {};
}
Popcorn.extend( this.options.defaults[ plugin ], defaults );
return this;
}
});
Popcorn.Events = {
UIEvents: "blur focus focusin focusout load resize scroll unload",
MouseEvents: "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave click dblclick",
Events: "loadstart progress suspend emptied stalled play pause error " +
"loadedmetadata loadeddata waiting playing canplay canplaythrough " +
"seeking seeked timeupdate ended ratechange durationchange volumechange bitrateloaded"
};
Popcorn.Events.Natives = Popcorn.Events.UIEvents + " " +
Popcorn.Events.MouseEvents + " " +
Popcorn.Events.Events;
internal.events.apiTypes = [ "UIEvents", "MouseEvents", "Events" ];
// Privately compile events table at load time
(function( events, data ) {
var apis = internal.events.apiTypes,
eventsList = events.Natives.split( /\s+/g ),
idx = 0, len = eventsList.length, prop;
for( ; idx < len; idx++ ) {
data.hash[ eventsList[idx] ] = true;
}
apis.forEach(function( val, idx ) {
data.apis[ val ] = {};
var apiEvents = events[ val ].split( /\s+/g ),
len = apiEvents.length,
k = 0;
for ( ; k < len; k++ ) {
data.apis[ val ][ apiEvents[ k ] ] = true;
}
});
})( Popcorn.Events, internal.events );
Popcorn.events = {
isNative: function( type ) {
return !!internal.events.hash[ type ];
},
getInterface: function( type ) {
if ( !Popcorn.events.isNative( type ) ) {
return false;
}
var eventApi = internal.events,
apis = eventApi.apiTypes,
apihash = eventApi.apis,
idx = 0, len = apis.length, api, tmp;
for ( ; idx < len; idx++ ) {
tmp = apis[ idx ];
if ( apihash[ tmp ][ type ] ) {
api = tmp;
break;
}
}
return api;
},
// Compile all native events to single array
all: Popcorn.Events.Natives.split( /\s+/g ),
// Defines all Event handling static functions
fn: {
trigger: function( type, data ) {
var eventInterface, evt, clonedEvents,
events = this.data.events[ type ];
// setup checks for custom event system