@mlightcad/common
Version:
[](https://opensource.org/licenses/MIT) [](https://www.npmjs.com/package/@mlightcad/common)
133 lines • 4.37 kB
JavaScript
/**
* @fileoverview Simple event manager implementation for the AutoCAD Common library.
*
* This module provides a lightweight event management system for handling
* listeners and dispatching events with type-safe payload support.
*
* @module AcCmEventManager
* @version 1.0.0
*/
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
if (ar || !(i in from)) {
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
ar[i] = from[i];
}
}
return to.concat(ar || Array.prototype.slice.call(from));
};
/**
* Simple event manager for handling event listeners and dispatching events.
*
* Provides a lightweight alternative to the more complex AcCmEventDispatcher
* for cases where you need basic event handling with type-safe payloads.
*
* @template T - The type of the event payload.
*
* @example
* ```typescript
* // Create an event manager for string payloads
* const manager = new AcCmEventManager<string>()
*
* // Add a listener
* manager.addEventListener((message) => {
* console.log('Received:', message)
* })
*
* // Dispatch an event
* manager.dispatch('Hello, World!')
*
* // For complex payloads
* interface LoadEvent {
* url: string
* progress: number
* }
*
* const loadManager = new AcCmEventManager<LoadEvent>()
* loadManager.addEventListener(({ url, progress }) => {
* console.log(`Loading ${url}: ${progress}%`)
* })
* ```
*/
var AcCmEventManager = /** @class */ (function () {
function AcCmEventManager() {
this.listeners = [];
}
/**
* Add the event listener
* @param listener Input listener to be added
*/
AcCmEventManager.prototype.addEventListener = function (listener) {
this.listeners.push(listener);
};
/**
* Remove the listener
* @param listener Input listener to be removed
*/
AcCmEventManager.prototype.removeEventListener = function (listener) {
this.listeners = this.listeners.filter(function (s) { return s !== listener; });
};
/**
* Remove all listeners bound to the target and add one new listener
* @param listener Input listener to be added
*/
AcCmEventManager.prototype.replaceEventListener = function (listener) {
this.removeEventListener(listener);
this.addEventListener(listener);
};
/**
* Notify all listeners
* @param payload Input payload passed to listener
*/
AcCmEventManager.prototype.dispatch = function (payload) {
var e_1, _a;
var args = [];
for (var _i = 1; _i < arguments.length; _i++) {
args[_i - 1] = arguments[_i];
}
try {
for (var _b = __values(this.listeners), _c = _b.next(); !_c.done; _c = _b.next()) {
var item = _c.value;
var listener = item;
listener.call.apply(listener, __spreadArray([null, payload], __read(args), false));
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
}
finally { if (e_1) throw e_1.error; }
}
};
return AcCmEventManager;
}());
export { AcCmEventManager };
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