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| var mediator = (function(){ | |
| var subscribe = function(channel, fn){ | |
| if (!mediator.channels[channel]) mediator.channels[channel] = []; | |
| mediator.channels[channel].push({ context: this, callback: fn }); | |
| return this; | |
| }, | |
| publish = function(channel){ | |
| if (!mediator.channels[channel]) return false; | |
| var args = Array.prototype.slice.call(arguments, 1); | |
| for (var i = 0, l = mediator.channels[channel].length; i < l; i++) { | |
| var subscription = mediator.channels[channel][i]; | |
| subscription.callback.apply(subscription.context, args); | |
| } | |
| return this; | |
| }; | |
| return { | |
| channels: {}, | |
| publish: publish, | |
| subscribe: subscribe, | |
| installTo: function(obj){ | |
| obj.subscribe = subscribe; | |
| obj.publish = publish; | |
| } | |
| }; | |
| }()); |
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