Created
November 27, 2013 08:05
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A simple class for managing events.
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var Dispatcher = function(componentName) { | |
var listeners = []; | |
return { | |
on: function(eventName, callback) { | |
if(!listeners[eventName]) { | |
listeners[eventName] = []; | |
} | |
listeners[eventName].push(callback); | |
return this; | |
}, | |
off: function(eventName, handler) { | |
if(!listeners[eventName]) return this; | |
if(!handler) listeners[eventName] = []; return this; | |
var newArr = []; | |
for(var i=0; i<listeners[eventName].length; i++) { | |
if(listeners[eventName][i] !== handler) { | |
newArr.push(listeners[eventName][i]); | |
} | |
} | |
listeners[eventName] = newArr; | |
return this; | |
}, | |
dispatch: function(eventName, data) { | |
console.log("%c" + componentName + ": " + eventName, "color: #29A0D3;"); | |
if(listeners[eventName]) { | |
for(var i=0; i<listeners[eventName].length; i++) { | |
var callback = listeners[eventName][i]; | |
callback(data); | |
} | |
} | |
return this; | |
} | |
} | |
} |
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