@mlightcad/common/lib/AcCmEventDispatcher.js

The common package provides shared utilities and base classes that are used across the RealDWG-Web ecosystem. This package contains fundamental components for color management, event handling, logging, performance monitoring, and file loading operations.

// eslint-disable-next-line
var AcCmEventDispatcher = /** @class */ (function () {
    /**
     * Creates {@link AcCmEventDispatcher} object.
     */
    function AcCmEventDispatcher() {
        this._listeners = {};
    }
    AcCmEventDispatcher.prototype.addEventListener = function (type, listener) {
        if (this._listeners === undefined)
            this._listeners = {};
        var listeners = this._listeners;
        if (listeners[type] === undefined) {
            listeners[type] = [];
        }
        if (listeners[type].indexOf(listener) === -1) {
            listeners[type].push(listener);
        }
    };
    AcCmEventDispatcher.prototype.hasEventListener = function (type, listener) {
        if (this._listeners === undefined)
            return false;
        var listeners = this._listeners;
        return (listeners[type] !== undefined && listeners[type].indexOf(listener) !== -1);
    };
    AcCmEventDispatcher.prototype.removeEventListener = function (type, listener) {
        if (this._listeners === undefined)
            return;
        var listeners = this._listeners;
        var listenerArray = listeners[type];
        if (listenerArray !== undefined) {
            var index = listenerArray.indexOf(listener);
            if (index !== -1) {
                listenerArray.splice(index, 1);
            }
        }
    };
    /**
     * Fire an event type.
     * @param event The event that gets fired.
     */
    AcCmEventDispatcher.prototype.dispatchEvent = function (event) {
        if (this._listeners === undefined)
            return;
        var listeners = this._listeners;
        var listenerArray = listeners[event.type];
        if (listenerArray !== undefined) {
            // @ts-expect-error add target property
            event.target = this;
            // Make a copy, in case listeners are removed while iterating.
            var array = listenerArray.slice(0);
            for (var i = 0, l = array.length; i < l; i++) {
                array[i].call(this, event);
            }
        }
    };
    return AcCmEventDispatcher;
}());
export { AcCmEventDispatcher };
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