69 lines
2.2 KiB
JavaScript
69 lines
2.2 KiB
JavaScript
/**
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* MicroEvent - to make any js object an event emitter (server or browser)
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*
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* - pure javascript - server compatible, browser compatible
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* - dont rely on the browser doms
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* - super simple - you get it immediatly, no mistery, no magic involved
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*
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* - create a MicroEventDebug with goodies to debug
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* - make it safer to use
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*/
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define(function(require, exports, module){
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var MicroEvent = function(){}
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MicroEvent.prototype = {
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bind : function(event, fct){
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this._events = this._events || {};
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this._events[event] = this._events[event] || [];
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this._events[event].push(fct);
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},
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once : function(event, fct){
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this._onceEvents = this._onceEvents || {};
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this._onceEvents[event] = this._onceEvents[event] || [];
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this._onceEvents[event].push(fct);
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},
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unbind : function(event, fct){
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this._events = this._events || {};
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if( event in this._events === false ) return;
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this._events[event].splice(this._events[event].indexOf(fct), 1);
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},
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trigger : function(event /* , args... */){
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this._events = this._events || {};
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this._onceEvents = this._onceEvents || {};
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var i;
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if (!( event in this._events === false ))
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for(i = 0; i < this._events[event].length; i++){
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this._events[event][i].apply(this, Array.prototype.slice.call(arguments, 1))
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}
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if (!( event in this._onceEvents === false ))
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{
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for(i = 0; i < this._onceEvents[event].length; i++){
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this._onceEvents[event][i].apply(this, Array.prototype.slice.call(arguments, 1))
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}
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this._onceEvents[event].splice(0, this._onceEvents[event].length);
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}
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}
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};
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/**
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* mixin will delegate all MicroEvent.js function in the destination object
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*
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* - require('MicroEvent').mixin(Foobar) will make Foobar able to use MicroEvent
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*
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* @param {Object} the object which will support MicroEvent
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*/
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MicroEvent.mixin = function(destObject){
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var props = ['bind', 'unbind', 'trigger', 'once'];
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for(var i = 0; i < props.length; i ++){
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destObject.prototype[props[i]] = MicroEvent.prototype[props[i]];
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}
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}
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// export in common js
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if( typeof module !== "undefined" && ('exports' in module)){
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module.exports = MicroEvent
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}
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}); |