@needle-tools/engine/lib/engine/engine_components_internal.js

Needle Engine is a web-based runtime for 3D apps. It runs on your machine for development with great integrations into editors like Unity or Blender - and can be deployed onto any device! It is flexible, extensible and networking and XR are built-in.

import { getParam } from "./engine_utils.js";
const debug = getParam("debugcomponentevents");
export class ComponentLifecycleEvents {
    static eventListeners = new Map();
    static addComponentLifecylceEventListener(evt, cb) {
        if (this.eventListeners.has(evt)) {
            this.eventListeners.set(evt, []);
        }
        let arr = this.eventListeners.get(evt);
        if (!arr)
            arr = [];
        arr.push(cb);
        this.eventListeners.set(evt, arr);
        if (debug)
            console.log("Added event listener for " + evt, this.eventListeners);
    }
    static removeComponentLifecylceEventListener(evt, cb) {
        const listeners = this.eventListeners.get(evt);
        if (!listeners)
            return;
        const index = listeners.indexOf(cb);
        if (index < 0)
            return;
        listeners.splice(index, 1);
    }
    static dispatchComponentLifecycleEvent(evt, data) {
        const listeners = this.eventListeners.get(evt);
        if (debug)
            console.log("Dispatching event " + evt, listeners);
        if (!listeners)
            return;
        for (const listener of listeners) {
            listener(data);
        }
    }
}
//# sourceMappingURL=engine_components_internal.js.map