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keksAccountGUI/node_modulesOLD/event-pubsub/es5.js
2019-08-11 20:48:02 +02:00

143 lines
3.1 KiB
JavaScript

'use strict';
function EventPubSub() {
this._events_={};
this.publish=this.trigger=this.emit=emit;
this.subscribe=this.on=on;
this.once=once;
this.unSubscribe=this.off=off;
this.emit$=emit$;
function on(type,handler,once){
if(!handler){
throw new ReferenceError('handler not defined.');
}
if(!this._events_[type]){
this._events_[type]=[];
}
if(once){
handler._once_ = once;
}
this._events_[type].push(handler);
return this;
}
function once(type,handler){
return this.on(type, handler, true);
}
function off(type,handler){
if(!this._events_[type]){
return this;
}
if(!handler){
throw new ReferenceError('handler not defined. if you wish to remove all handlers from the event please pass "*" as the handler');
}
if(handler=='*'){
delete this._events_[type];
return this;
}
var handlers=this._events_[type];
while(handlers.includes(handler)){
handlers.splice(
handlers.indexOf(handler),
1
);
}
if(handlers.length<1){
delete this._events_[type];
}
return this;
}
function emit(type){
this.emit$.apply(this, arguments);
if(!this._events_[type]){
return this;
}
arguments.splice=Array.prototype.splice;
arguments.splice(0,1);
var handlers=this._events_[type];
var onceHandled=[];
for(var i in handlers){
var handler=handlers[i];
handler.apply(this, arguments);
if(handler._once_){
onceHandled.push(handler);
}
}
for(var i in onceHandled){
this.off(
type,
onceHandled[i]
);
}
return this;
}
function emit$(type, args){
if(!this._events_['*']){
return this;
}
var catchAll=this._events_['*'];
args.shift=Array.prototype.shift;
args.shift(type);
for(var handler of catchAll){
handler.apply(this, args);
}
return this;
}
return this;
}
if (!Array.prototype.includes) {
Array.prototype.includes = function(searchElement /*, fromIndex*/) {
'use strict';
if (this == null) {
throw new TypeError('Array.prototype.includes called on null or undefined');
}
var O = Object(this);
var len = parseInt(O.length, 10) || 0;
if (len === 0) {
return false;
}
var n = parseInt(arguments[1], 10) || 0;
var k;
if (n >= 0) {
k = n;
} else {
k = len + n;
if (k < 0) {k = 0;}
}
var currentElement;
while (k < len) {
currentElement = O[k];
if (searchElement === currentElement ||
(searchElement !== searchElement && currentElement !== currentElement)) { // NaN !== NaN
return true;
}
k++;
}
return false;
};
}
module.exports=EventPubSub;