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/*! elementor - v0.7.1 - 18-08-2016 */
// Backbone.Radio v1.0.4
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('underscore'), require('backbone')) :
typeof define === 'function' && define.amd ? define(['underscore', 'backbone'], factory) :
(global.Backbone = global.Backbone || {}, global.Backbone.Radio = factory(global._,global.Backbone));
}(this, function (_,Backbone) { 'use strict';
_ = 'default' in _ ? _['default'] : _;
Backbone = 'default' in Backbone ? Backbone['default'] : Backbone;
var babelHelpers = {};
babelHelpers.typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
return typeof obj;
} : function (obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj;
};
babelHelpers;
var previousRadio = Backbone.Radio;
var Radio = Backbone.Radio = {};
Radio.VERSION = '1.0.4';
// This allows you to run multiple instances of Radio on the same
// webapp. After loading the new version, call `noConflict()` to
// get a reference to it. At the same time the old version will be
// returned to Backbone.Radio.
Radio.noConflict = function () {
Backbone.Radio = previousRadio;
return this;
};
// Whether or not we're in DEBUG mode or not. DEBUG mode helps you
// get around the issues of lack of warnings when events are mis-typed.
Radio.DEBUG = false;
// Format debug text.
Radio._debugText = function (warning, eventName, channelName) {
return warning + (channelName ? ' on the ' + channelName + ' channel' : '') + ': "' + eventName + '"';
};
// This is the method that's called when an unregistered event was called.
// By default, it logs warning to the console. By overriding this you could
// make it throw an Error, for instance. This would make firing a nonexistent event
// have the same consequence as firing a nonexistent method on an Object.
Radio.debugLog = function (warning, eventName, channelName) {
if (Radio.DEBUG && console && console.warn) {
console.warn(Radio._debugText(warning, eventName, channelName));
}
};
var eventSplitter = /\s+/;
// An internal method used to handle Radio's method overloading for Requests.
// It's borrowed from Backbone.Events. It differs from Backbone's overload
// API (which is used in Backbone.Events) in that it doesn't support space-separated
// event names.
Radio._eventsApi = function (obj, action, name, rest) {
if (!name) {
return false;
}
var results = {};
// Handle event maps.
if ((typeof name === 'undefined' ? 'undefined' : babelHelpers.typeof(name)) === 'object') {
for (var key in name) {
var result = obj[action].apply(obj, [key, name[key]].concat(rest));
eventSplitter.test(key) ? _.extend(results, result) : results[key] = result;
}
return results;
}
// Handle space separated event names.
if (eventSplitter.test(name)) {
var names = name.split(eventSplitter);
for (var i = 0, l = names.length; i < l; i++) {
results[names[i]] = obj[action].apply(obj, [names[i]].concat(rest));
}
return results;
}
return false;
};
// An optimized way to execute callbacks.
Radio._callHandler = function (callback, context, args) {
var a1 = args[0],
a2 = args[1],
a3 = args[2];
switch (args.length) {
case 0:
return callback.call(context);
case 1:
return callback.call(context, a1);
case 2:
return callback.call(context, a1, a2);
case 3:
return callback.call(context, a1, a2, a3);
default:
return callback.apply(context, args);
}
};
// A helper used by `off` methods to the handler from the store
function removeHandler(store, name, callback, context) {
var event = store[name];
if ((!callback || callback === event.callback || callback === event.callback._callback) && (!context || context === event.context)) {
delete store[name];
return true;
}
}
function removeHandlers(store, name, callback, context) {
store || (store = {});
var names = name ? [name] : _.keys(store);
var matched = false;
for (var i = 0, length = names.length; i < length; i++) {
name = names[i];
// If there's no event by this name, log it and continue
// with the loop
if (!store[name]) {
continue;
}
if (removeHandler(store, name, callback, context)) {
matched = true;
}
}
return matched;
}
/*
* tune-in
* -------
* Get console logs of a channel's activity
*
*/
var _logs = {};
// This is to produce an identical function in both tuneIn and tuneOut,
// so that Backbone.Events unregisters it.
function _partial(channelName) {
return _logs[channelName] || (_logs[channelName] = _.partial(Radio.log, channelName));
}
_.extend(Radio, {
// Log information about the channel and event
log: function log(channelName, eventName) {
if (typeof console === 'undefined') {
return;
}
var args = _.drop(arguments, 2);
console.log('[' + channelName + '] "' + eventName + '"', args);
},
// Logs all events on this channel to the console. It sets an
// internal value on the channel telling it we're listening,
// then sets a listener on the Backbone.Events
tuneIn: function tuneIn(channelName) {
var channel = Radio.channel(channelName);
channel._tunedIn = true;
channel.on('all', _partial(channelName));
return this;
},
// Stop logging all of the activities on this channel to the console
tuneOut: function tuneOut(channelName) {
var channel = Radio.channel(channelName);
channel._tunedIn = false;
channel.off('all', _partial(channelName));
delete _logs[channelName];
return this;
}
});
/*
* Backbone.Radio.Requests
* -----------------------
* A messaging system for requesting data.
*
*/
function makeCallback(callback) {
return _.isFunction(callback) ? callback : function () {
return callback;
};
}
Radio.Requests = {
// Make a request
request: function request(name) {
var args = _.rest(arguments);
var results = Radio._eventsApi(this, 'request', name, args);
if (results) {
return results;
}
var channelName = this.channelName;
var requests = this._requests;
// Check if we should log the request, and if so, do it
if (channelName && this._tunedIn) {
Radio.log.apply(this, [channelName, name].concat(args));
}
// If the request isn't handled, log it in DEBUG mode and exit
if (requests && (requests[name] || requests['default'])) {
var handler = requests[name] || requests['default'];
args = requests[name] ? args : arguments;
return Radio._callHandler(handler.callback, handler.context, args);
} else {
Radio.debugLog('An unhandled request was fired', name, channelName);
}
},
// Set up a handler for a request
reply: function reply(name, callback, context) {
if (Radio._eventsApi(this, 'reply', name, [callback, context])) {
return this;
}
this._requests || (this._requests = {});
if (this._requests[name]) {
Radio.debugLog('A request was overwritten', name, this.channelName);
}
this._requests[name] = {
callback: makeCallback(callback),
context: context || this
};
return this;
},
// Set up a handler that can only be requested once
replyOnce: function replyOnce(name, callback, context) {
if (Radio._eventsApi(this, 'replyOnce', name, [callback, context])) {
return this;
}
var self = this;
var once = _.once(function () {
self.stopReplying(name);
return makeCallback(callback).apply(this, arguments);
});
return this.reply(name, once, context);
},
// Remove handler(s)
stopReplying: function stopReplying(name, callback, context) {
if (Radio._eventsApi(this, 'stopReplying', name)) {
return this;
}
// Remove everything if there are no arguments passed
if (!name && !callback && !context) {
delete this._requests;
} else if (!removeHandlers(this._requests, name, callback, context)) {
Radio.debugLog('Attempted to remove the unregistered request', name, this.channelName);
}
return this;
}
};
/*
* Backbone.Radio.channel
* ----------------------
* Get a reference to a channel by name.
*
*/
Radio._channels = {};
Radio.channel = function (channelName) {
if (!channelName) {
throw new Error('You must provide a name for the channel.');
}
if (Radio._channels[channelName]) {
return Radio._channels[channelName];
} else {
return Radio._channels[channelName] = new Radio.Channel(channelName);
}
};
/*
* Backbone.Radio.Channel
* ----------------------
* A Channel is an object that extends from Backbone.Events,
* and Radio.Requests.
*
*/
Radio.Channel = function (channelName) {
this.channelName = channelName;
};
_.extend(Radio.Channel.prototype, Backbone.Events, Radio.Requests, {
// Remove all handlers from the messaging systems of this channel
reset: function reset() {
this.off();
this.stopListening();
this.stopReplying();
return this;
}
});
/*
* Top-level API
* -------------
* Supplies the 'top-level API' for working with Channels directly
* from Backbone.Radio.
*
*/
var channel;
var args;
var systems = [Backbone.Events, Radio.Requests];
_.each(systems, function (system) {
_.each(system, function (method, methodName) {
Radio[methodName] = function (channelName) {
args = _.rest(arguments);
channel = this.channel(channelName);
return channel[methodName].apply(channel, args);
};
});
});
Radio.reset = function (channelName) {
var channels = !channelName ? this._channels : [this._channels[channelName]];
_.invoke(channels, 'reset');
};
return Radio;
}));