|
// Init style shamelessly stolen from jQuery http://jquery.com |
|
var Froogaloop = (function(){ |
|
// Define a local copy of Froogaloop |
|
function Froogaloop(iframe) { |
|
// The Froogaloop object is actually just the init constructor |
|
return new Froogaloop.fn.init(iframe); |
|
} |
|
|
|
var eventCallbacks = {}, |
|
hasWindowEvent = false, |
|
isReady = false, |
|
slice = Array.prototype.slice, |
|
playerDomain = ''; |
|
|
|
Froogaloop.fn = Froogaloop.prototype = { |
|
element: null, |
|
|
|
init: function(iframe) { |
|
if (typeof iframe === "string") { |
|
iframe = document.getElementById(iframe); |
|
} |
|
|
|
this.element = iframe; |
|
|
|
// Register message event listeners |
|
playerDomain = getDomainFromUrl(this.element.getAttribute('src')); |
|
|
|
return this; |
|
}, |
|
|
|
/* |
|
* Calls a function to act upon the player. |
|
* |
|
* @param {string} method The name of the Javascript API method to call. Eg: 'play'. |
|
* @param {Array|Function} valueOrCallback params Array of parameters to pass when calling an API method |
|
* or callback function when the method returns a value. |
|
*/ |
|
api: function(method, valueOrCallback) { |
|
if (!this.element || !method) { |
|
return false; |
|
} |
|
|
|
var self = this, |
|
element = self.element, |
|
target_id = element.id !== '' ? element.id : null, |
|
params = !isFunction(valueOrCallback) ? valueOrCallback : null, |
|
callback = isFunction(valueOrCallback) ? valueOrCallback : null; |
|
|
|
// Store the callback for get functions |
|
if (callback) { |
|
storeCallback(method, callback, target_id); |
|
} |
|
|
|
postMessage(method, params, element); |
|
return self; |
|
}, |
|
|
|
/* |
|
* Registers an event listener and a callback function that gets called when the event fires. |
|
* |
|
* @param eventName (String): Name of the event to listen for. |
|
* @param callback (Function): Function that should be called when the event fires. |
|
*/ |
|
addEvent: function(eventName, callback) { |
|
if (!this.element) { |
|
return false; |
|
} |
|
|
|
var self = this, |
|
element = self.element, |
|
target_id = element.id !== '' ? element.id : null; |
|
|
|
|
|
storeCallback(eventName, callback, target_id); |
|
|
|
// The ready event is not registered via postMessage. It fires regardless. |
|
if (eventName != 'ready') { |
|
postMessage('addEventListener', eventName, element); |
|
} |
|
else if (eventName == 'ready' && isReady) { |
|
callback.call(null, target_id); |
|
} |
|
|
|
return self; |
|
}, |
|
|
|
/* |
|
* Unregisters an event listener that gets called when the event fires. |
|
* |
|
* @param eventName (String): Name of the event to stop listening for. |
|
*/ |
|
removeEvent: function(eventName) { |
|
if (!this.element) { |
|
return false; |
|
} |
|
|
|
var self = this, |
|
element = self.element, |
|
target_id = element.id !== '' ? element.id : null, |
|
removed = removeCallback(eventName, target_id); |
|
|
|
// The ready event is not registered |
|
if (eventName != 'ready' && removed) { |
|
postMessage('removeEventListener', eventName, element); |
|
} |
|
} |
|
}; |
|
|
|
/** |
|
* Handles posting a message to the parent window. |
|
* |
|
* @param method (String): name of the method to call inside the player. For api calls |
|
* this is the name of the api method (api_play or api_pause) while for events this method |
|
* is api_addEventListener. |
|
* @param params (Object or Array): List of parameters to submit to the method. Can be either |
|
* a single param or an array list of parameters. |
|
* @param target (HTMLElement): Target iframe to post the message to. |
|
*/ |
|
function postMessage(method, params, target) { |
|
if (!target.contentWindow.postMessage) { |
|
return false; |
|
} |
|
|
|
var url = target.getAttribute('src').split('?')[0], |
|
data = JSON.stringify({ |
|
method: method, |
|
value: params |
|
}); |
|
|
|
target.contentWindow.postMessage(data, url); |
|
} |
|
|
|
/** |
|
* Event that fires whenever the window receives a message from its parent |
|
* via window.postMessage. |
|
*/ |
|
function onMessageReceived(event) { |
|
var data, method; |
|
|
|
try { |
|
data = JSON.parse(event.data); |
|
method = data.event || data.method; |
|
} |
|
catch(e) { |
|
//fail silently... like a ninja! |
|
} |
|
|
|
if (method == 'ready' && !isReady) { |
|
isReady = true; |
|
} |
|
|
|
// Handles messages from moogaloop only |
|
if (event.origin != playerDomain) { |
|
return false; |
|
} |
|
|
|
var value = data.value, |
|
eventData = data.data, |
|
target_id = target_id === '' ? null : data.player_id, |
|
|
|
callback = getCallback(method, target_id), |
|
params = []; |
|
|
|
if (!callback) { |
|
return false; |
|
} |
|
|
|
if (value !== undefined) { |
|
params.push(value); |
|
} |
|
|
|
if (eventData) { |
|
params.push(eventData); |
|
} |
|
|
|
if (target_id) { |
|
params.push(target_id); |
|
} |
|
|
|
return params.length > 0 ? callback.apply(null, params) : callback.call(); |
|
} |
|
|
|
|
|
/** |
|
* Stores submitted callbacks for each iframe being tracked and each |
|
* event for that iframe. |
|
* |
|
* @param eventName (String): Name of the event. Eg. api_onPlay |
|
* @param callback (Function): Function that should get executed when the |
|
* event is fired. |
|
* @param target_id (String) [Optional]: If handling more than one iframe then |
|
* it stores the different callbacks for different iframes based on the iframe's |
|
* id. |
|
*/ |
|
function storeCallback(eventName, callback, target_id) { |
|
if (target_id) { |
|
if (!eventCallbacks[target_id]) { |
|
eventCallbacks[target_id] = {}; |
|
} |
|
eventCallbacks[target_id][eventName] = callback; |
|
} |
|
else { |
|
eventCallbacks[eventName] = callback; |
|
} |
|
} |
|
|
|
/** |
|
* Retrieves stored callbacks. |
|
*/ |
|
function getCallback(eventName, target_id) { |
|
if (target_id) { |
|
return eventCallbacks[target_id][eventName]; |
|
} |
|
else { |
|
return eventCallbacks[eventName]; |
|
} |
|
} |
|
|
|
function removeCallback(eventName, target_id) { |
|
if (target_id && eventCallbacks[target_id]) { |
|
if (!eventCallbacks[target_id][eventName]) { |
|
return false; |
|
} |
|
eventCallbacks[target_id][eventName] = null; |
|
} |
|
else { |
|
if (!eventCallbacks[eventName]) { |
|
return false; |
|
} |
|
eventCallbacks[eventName] = null; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
/** |
|
* Returns a domain's root domain. |
|
* Eg. returns http://vimeo.com when http://vimeo.com/channels is sbumitted |
|
* |
|
* @param url (String): Url to test against. |
|
* @return url (String): Root domain of submitted url |
|
*/ |
|
function getDomainFromUrl(url) { |
|
var url_pieces = url.split('/'), |
|
domain_str = ''; |
|
|
|
for(var i = 0, length = url_pieces.length; i < length; i++) { |
|
if(i<3) {domain_str += url_pieces[i];} |
|
else {break;} |
|
if(i<2) {domain_str += '/';} |
|
} |
|
|
|
return domain_str; |
|
} |
|
|
|
function isFunction(obj) { |
|
return !!(obj && obj.constructor && obj.call && obj.apply); |
|
} |
|
|
|
function isArray(obj) { |
|
return toString.call(obj) === '[object Array]'; |
|
} |
|
|
|
// Give the init function the Froogaloop prototype for later instantiation |
|
Froogaloop.fn.init.prototype = Froogaloop.fn; |
|
|
|
// Listens for the message event. |
|
// W3C |
|
if (window.addEventListener) { |
|
window.addEventListener('message', onMessageReceived, false); |
|
} |
|
// IE |
|
else { |
|
window.attachEvent('onmessage', onMessageReceived, false); |
|
} |
|
|
|
// Expose froogaloop to the global object |
|
return (window.Froogaloop = window.$f = Froogaloop); |
|
|
|
})(); |
258 inscritos
