@azure/msal-browser
Version:
Microsoft Authentication Library for js
111 lines (108 loc) • 4 kB
JavaScript
/*! @azure/msal-browser v5.6.3 2026-04-01 */
;
import { Logger } from '@azure/msal-common/browser';
import { EventType } from './EventType.mjs';
import { createGuid } from '../utils/BrowserUtils.mjs';
/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
const BROADCAST_CHANNEL_NAME = "msal.broadcast.event";
class EventHandler {
constructor(logger) {
this.eventCallbacks = new Map();
this.logger = logger || new Logger({});
if (typeof BroadcastChannel !== "undefined") {
this.broadcastChannel = new BroadcastChannel(BROADCAST_CHANNEL_NAME);
}
this.invokeCrossTabCallbacks = this.invokeCrossTabCallbacks.bind(this);
}
/**
* Adds event callbacks to array
* @param callback - callback to be invoked when an event is raised
* @param eventTypes - list of events that this callback will be invoked for, if not provided callback will be invoked for all events
* @param callbackId - Identifier for the callback, used to locate and remove the callback when no longer required
*/
addEventCallback(callback, eventTypes, callbackId) {
if (typeof window !== "undefined") {
const id = callbackId || createGuid();
if (this.eventCallbacks.has(id)) {
this.logger.error("1578i0", "");
return null;
}
this.eventCallbacks.set(id, [callback, eventTypes || []]);
this.logger.verbose("1cnec4", "");
return id;
}
return null;
}
/**
* Removes callback with provided id from callback array
* @param callbackId
*/
removeEventCallback(callbackId) {
this.eventCallbacks.delete(callbackId);
this.logger.verbose("12zotd", "");
}
/**
* Emits events by calling callback with event message
* @param eventType
* @param interactionType
* @param payload
* @param error
*/
emitEvent(eventType, correlationId, interactionType, payload, error) {
const message = {
eventType: eventType,
interactionType: interactionType || null,
payload: payload || null,
error: error || null,
correlationId: correlationId,
timestamp: Date.now(),
};
switch (eventType) {
case EventType.LOGIN_SUCCESS:
case EventType.LOGOUT_SUCCESS:
case EventType.ACTIVE_ACCOUNT_CHANGED:
// Send event to other open tabs / MSAL instances on same domain
this.broadcastChannel?.postMessage(message);
}
// Emit event to callbacks registered in this instance
this.invokeCallbacks(message);
}
/**
* Invoke registered callbacks
* @param message
*/
invokeCallbacks(message) {
this.eventCallbacks.forEach(([callback, eventTypes], callbackId) => {
if (eventTypes.length === 0 ||
eventTypes.includes(message.eventType)) {
this.logger.verbose("15jpwk", "");
callback.apply(null, [message]);
}
});
}
/**
* Wrapper around invokeCallbacks to handle broadcast events received from other tabs/instances
* @param event
*/
invokeCrossTabCallbacks(event) {
const message = event.data;
this.invokeCallbacks(message);
}
/**
* Listen for events broadcasted from other tabs/instances
*/
subscribeCrossTab() {
this.broadcastChannel?.addEventListener("message", this.invokeCrossTabCallbacks);
}
/**
* Unsubscribe from broadcast events
*/
unsubscribeCrossTab() {
this.broadcastChannel?.removeEventListener("message", this.invokeCrossTabCallbacks);
}
}
export { EventHandler };
//# sourceMappingURL=EventHandler.mjs.map