Eventful.js
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var Eventful = (function () {
function Eventful(eventProcessors) {
if (eventProcessors) {
this._$eventProcessor = eventProcessors;
}
}
Eventful.prototype.on = function (event, query, handler, context) {
if (!this._$handlers) {
this._$handlers = {};
}
var _h = this._$handlers;
if (typeof query === 'function') {
context = handler;
handler = query;
query = null;
}
if (!handler || !event) {
return this;
}
var eventProcessor = this._$eventProcessor;
if (query != null && eventProcessor && eventProcessor.normalizeQuery) {
query = eventProcessor.normalizeQuery(query);
}
if (!_h[event]) {
_h[event] = [];
}
for (var i = 0; i < _h[event].length; i++) {
if (_h[event][i].h === handler) {
return this;
}
}
var wrap = {
h: handler,
query: query,
ctx: (context || this),
callAtLast: handler.zrEventfulCallAtLast
};
var lastIndex = _h[event].length - 1;
var lastWrap = _h[event][lastIndex];
(lastWrap && lastWrap.callAtLast)
? _h[event].splice(lastIndex, 0, wrap)
: _h[event].push(wrap);
return this;
};
Eventful.prototype.isSilent = function (eventName) {
var _h = this._$handlers;
return !_h || !_h[eventName] || !_h[eventName].length;
};
Eventful.prototype.off = function (eventType, handler) {
var _h = this._$handlers;
if (!_h) {
return this;
}
if (!eventType) {
this._$handlers = {};
return this;
}
if (handler) {
if (_h[eventType]) {
var newList = [];
for (var i = 0, l = _h[eventType].length; i < l; i++) {
if (_h[eventType][i].h !== handler) {
newList.push(_h[eventType][i]);
}
}
_h[eventType] = newList;
}
if (_h[eventType] && _h[eventType].length === 0) {
delete _h[eventType];
}
}
else {
delete _h[eventType];
}
return this;
};
Eventful.prototype.trigger = function (eventType) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
if (!this._$handlers) {
return this;
}
var _h = this._$handlers[eventType];
var eventProcessor = this._$eventProcessor;
if (_h) {
var argLen = args.length;
var len = _h.length;
for (var i = 0; i < len; i++) {
var hItem = _h[i];
if (eventProcessor
&& eventProcessor.filter
&& hItem.query != null
&& !eventProcessor.filter(eventType, hItem.query)) {
continue;
}
switch (argLen) {
case 0:
hItem.h.call(hItem.ctx);
break;
case 1:
hItem.h.call(hItem.ctx, args[0]);
break;
case 2:
hItem.h.call(hItem.ctx, args[0], args[1]);
break;
default:
hItem.h.apply(hItem.ctx, args);
break;
}
}
}
eventProcessor && eventProcessor.afterTrigger
&& eventProcessor.afterTrigger(eventType);
return this;
};
Eventful.prototype.triggerWithContext = function (type) {
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
if (!this._$handlers) {
return this;
}
var _h = this._$handlers[type];
var eventProcessor = this._$eventProcessor;
if (_h) {
var argLen = args.length;
var ctx = args[argLen - 1];
var len = _h.length;
for (var i = 0; i < len; i++) {
var hItem = _h[i];
if (eventProcessor
&& eventProcessor.filter
&& hItem.query != null
&& !eventProcessor.filter(type, hItem.query)) {
continue;
}
switch (argLen) {
case 0:
hItem.h.call(ctx);
break;
case 1:
hItem.h.call(ctx, args[0]);
break;
case 2:
hItem.h.call(ctx, args[0], args[1]);
break;
default:
hItem.h.apply(ctx, args.slice(1, argLen - 1));
break;
}
}
}
eventProcessor && eventProcessor.afterTrigger
&& eventProcessor.afterTrigger(type);
return this;
};
return Eventful;
}());
export default Eventful;