/*! @azure/msal-browser v5.7.0 2026-04-16 */
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'use strict';
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import { Logger } from '@azure/msal-common/browser';
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import { EventType } from './EventType.mjs';
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import { createGuid } from '../utils/BrowserUtils.mjs';
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/*
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License.
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*/
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const BROADCAST_CHANNEL_NAME = "msal.broadcast.event";
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class EventHandler {
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constructor(logger) {
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this.eventCallbacks = new Map();
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this.logger = logger || new Logger({});
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if (typeof BroadcastChannel !== "undefined") {
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this.broadcastChannel = new BroadcastChannel(BROADCAST_CHANNEL_NAME);
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}
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this.invokeCrossTabCallbacks = this.invokeCrossTabCallbacks.bind(this);
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}
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/**
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* Adds event callbacks to array
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* @param callback - callback to be invoked when an event is raised
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* @param eventTypes - list of events that this callback will be invoked for, if not provided callback will be invoked for all events
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* @param callbackId - Identifier for the callback, used to locate and remove the callback when no longer required
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*/
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addEventCallback(callback, eventTypes, callbackId) {
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if (typeof window !== "undefined") {
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const id = callbackId || createGuid();
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if (this.eventCallbacks.has(id)) {
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this.logger.error("1578i0", "");
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return null;
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}
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this.eventCallbacks.set(id, [callback, eventTypes || []]);
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this.logger.verbose("1cnec4", "");
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return id;
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}
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return null;
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}
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/**
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* Removes callback with provided id from callback array
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* @param callbackId
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*/
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removeEventCallback(callbackId) {
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this.eventCallbacks.delete(callbackId);
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this.logger.verbose("12zotd", "");
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}
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/**
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* Emits events by calling callback with event message
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* @param eventType
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* @param interactionType
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* @param payload
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* @param error
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*/
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emitEvent(eventType, correlationId, interactionType, payload, error) {
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const message = {
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eventType: eventType,
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interactionType: interactionType || null,
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payload: payload || null,
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error: error || null,
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correlationId: correlationId,
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timestamp: Date.now(),
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};
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switch (eventType) {
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case EventType.LOGIN_SUCCESS:
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case EventType.LOGOUT_SUCCESS:
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case EventType.ACTIVE_ACCOUNT_CHANGED:
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// Send event to other open tabs / MSAL instances on same domain
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this.broadcastChannel?.postMessage(message);
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}
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// Emit event to callbacks registered in this instance
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this.invokeCallbacks(message);
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}
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/**
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* Invoke registered callbacks
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* @param message
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*/
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invokeCallbacks(message) {
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this.eventCallbacks.forEach(([callback, eventTypes], callbackId) => {
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if (eventTypes.length === 0 ||
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eventTypes.includes(message.eventType)) {
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this.logger.verbose("15jpwk", "");
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callback.apply(null, [message]);
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}
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});
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}
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/**
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* Wrapper around invokeCallbacks to handle broadcast events received from other tabs/instances
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* @param event
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*/
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invokeCrossTabCallbacks(event) {
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const message = event.data;
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this.invokeCallbacks(message);
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}
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/**
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* Listen for events broadcasted from other tabs/instances
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*/
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subscribeCrossTab() {
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this.broadcastChannel?.addEventListener("message", this.invokeCrossTabCallbacks);
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}
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/**
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* Unsubscribe from broadcast events
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*/
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unsubscribeCrossTab() {
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this.broadcastChannel?.removeEventListener("message", this.invokeCrossTabCallbacks);
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}
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}
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export { EventHandler };
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//# sourceMappingURL=EventHandler.mjs.map
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