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Mini Shell
Mini Shell
/* eslint-disable no-underscore-dangle */
export default {
on(events, handler, priority) {
const self = this;
if (typeof handler !== 'function') return self;
const method = priority ? 'unshift' : 'push';
events.split(' ').forEach(event => {
if (!self.eventsListeners[event]) self.eventsListeners[event] = [];
self.eventsListeners[event][method](handler);
});
return self;
},
once(events, handler, priority) {
const self = this;
if (typeof handler !== 'function') return self;
function onceHandler() {
self.off(events, onceHandler);
if (onceHandler.__emitterProxy) {
delete onceHandler.__emitterProxy;
}
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
handler.apply(self, args);
}
onceHandler.__emitterProxy = handler;
return self.on(events, onceHandler, priority);
},
onAny(handler, priority) {
const self = this;
if (typeof handler !== 'function') return self;
const method = priority ? 'unshift' : 'push';
if (self.eventsAnyListeners.indexOf(handler) < 0) {
self.eventsAnyListeners[method](handler);
}
return self;
},
offAny(handler) {
const self = this;
if (!self.eventsAnyListeners) return self;
const index = self.eventsAnyListeners.indexOf(handler);
if (index >= 0) {
self.eventsAnyListeners.splice(index, 1);
}
return self;
},
off(events, handler) {
const self = this;
if (!self.eventsListeners) return self;
events.split(' ').forEach(event => {
if (typeof handler === 'undefined') {
self.eventsListeners[event] = [];
} else if (self.eventsListeners[event]) {
self.eventsListeners[event].forEach((eventHandler, index) => {
if (eventHandler === handler || eventHandler.__emitterProxy && eventHandler.__emitterProxy === handler) {
self.eventsListeners[event].splice(index, 1);
}
});
}
});
return self;
},
emit() {
const self = this;
if (!self.eventsListeners) return self;
let events;
let data;
let context;
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
}
if (typeof args[0] === 'string' || Array.isArray(args[0])) {
events = args[0];
data = args.slice(1, args.length);
context = self;
} else {
events = args[0].events;
data = args[0].data;
context = args[0].context || self;
}
data.unshift(context);
const eventsArray = Array.isArray(events) ? events : events.split(' ');
eventsArray.forEach(event => {
if (self.eventsAnyListeners && self.eventsAnyListeners.length) {
self.eventsAnyListeners.forEach(eventHandler => {
eventHandler.apply(context, [event, ...data]);
});
}
if (self.eventsListeners && self.eventsListeners[event]) {
self.eventsListeners[event].forEach(eventHandler => {
eventHandler.apply(context, data);
});
}
});
return self;
}
};
Zerion Mini Shell 1.0