79 lines
1.5 KiB
JavaScript
79 lines
1.5 KiB
JavaScript
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/**
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* dependencies.
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*/
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var Emitter = require('events').EventEmitter
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, proto = Emitter.prototype;
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/**
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* expsoe `mixin`
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*
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* @param {Object} obj
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*/
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module.exports = function (obj) {
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// mixin
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for (var k in proto) {
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obj[k] = proto[k];
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}
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// events getter.
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obj.__defineGetter__('_events', function () {
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return this.__events || (this.__events = {});
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});
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// events setter.
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obj.__defineSetter__('_events', function (val) {
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this.__events = val;
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});
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/**
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* Remove all listeners for `event`.
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*
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* if the method is executed without
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* arguments it will remove all listeners,
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* otherwise you can supply `event` or
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* `event` with `fn` for more specific stuff.
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*
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* example:
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*
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* obj.on('foo', console.log)._events;
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* // > { foo: fn, }
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* obj.on('foo', console.dir)._events;
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* // > { foo: [fn, fn] }
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* obj.off('foo', console.log)._events;
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* // > { foo: [fn] }
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* obj.off('foo');
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* // > {}
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* obj.off();
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* // > {}
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*
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* @param {String} event
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* @param {Function} fn
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* @return {self}
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*/
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obj.off = function (event, fn) {
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switch (arguments.length) {
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case 2:
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this.removeListener(event, fn);
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return this;
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case 1:
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this.removeAllListeners(event);
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return this;
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case 0:
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this.removeAllListeners();
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return this;
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}
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};
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// all done
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return obj;
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};
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