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if (url.substr(0, 2) === '//') {
url = window.location.protocol + url;
}
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;