Notifications Framework

Notifications Framework provides a client-side API to manage notifications in Flex UI

What is a notification in Flex?

A notification is an alert that tells the user what state change or error has occurred to a component or page when they are no longer viewing that component or page

Users can be notified in Flex using a Notification Bar or Browser notifications or both.

What are notification framework capabilities?

Register custom notifications including browser notifications
Customize standard notifications
Turn off standard UI notifications
Override standard notifications per Task Channel Definition
Customize how standard UI notifications are displayed
Register your custom UI notifications and specify how to render them

NotificationBar

NotificationBar is an in-app way to alert user. NotificationBar has a variety of options like icon, actions, timeout. Learn more in Notification Object properties

Browser Notifications

We are using the standard Browser Notification API for Flex Notifications Framework browser notifications implementation.

Browser notifications are shown if Flex is not in focus or is minimized.

Requesting permissions

To start showing browser notifications user needs to first grand permissions. By default, Flex will request user for permissions if they are not granted or blocked.

If you want to add custom logic around requesting permissions, like request it based on some user action in the UI, then you can dispatch Notification.requestPermission() from your custom code.

Available methods of Notification Framework

Method	概要
registerNotification(notification: Notification)	Register a custom notification
showNotification(id: string, context?: Object): Notification	Dispatch a notification
addListener(event: string, handler: Function)	Listen for a Notification event
dismissNotification(notification: Notification)	Dismiss a notification
dismissNotificationById(id: string)	Dismiss a notification by Id
dismissAll()	Dismiss all notifications
registerHandler(handler)	Register notification handler. Use to expose your notification handler.
isNotificationHandlerEnabled()	Returns whether the notification handler for the given id is enabled or not
toggleNotificationHandler(id, enabled)	Enable or disable notification handler Available handlers: `browser` `inapp`

Available Properties for Notifications

プロパティ	Type	概要
id	文字列	notification Id Must be unique. An error will be thrown if another notification is already registered with the same id.
content	string \| React.ReactChild \| React.ReactElement<NotificationContentProps>	content of the notification. Can be a text, a template or custom React component
タイプ	文字列	notification type. Possible values: information = "information", success = "success", warning = "warning", error = "error"
backgroundColor?	文字列	background color for notification bar
icon?	文字列	notification icon for notification bar
timeout?	番号	time in milliseconds that notification bar is visible before automatically dismissed; default is 3000 milliseconds; if set to 0, the notification bar will not be automatically dismissed
closeButton?	boolean	if set to false, the notification bar will not have a close button to be dismissed manually
context?	オブジェクト	context variables that can be used in content templates.
isApplicable	callback function	callback determining whether particular notification instance should be shown
options	オブジェクト	Options for the notification handlers Available options - browser notifications handler (add link)
actions	Array<React.ReactElement>	List of custom clickable elements on the notification
onClick	callback function	If set and the internal notification bar shows hyperlinks then this callback is called when any of the links are clicked.

Available Events for Notifications

イベント	概要
`beforeAddNotification`	Event fired before notification is added
`notificationAdded`	Event fired when notification is added
`notificationDismissed`	Event fired when notification is dismissed

NotificationBar actions

A helper component NotificationBar.Action, that can be used for providing clickable action to notification definition.

interface NotificationBarActionProps {
    label: React.ReactText; // Can be simple text string or a template string
    onClick: NotificationBarActionCallback;
    icon?: string;
}

Browser notifications handler

if you want to display a browser notification, you shall use options key with a browser tag in it. Here is the exhaustive list of properties that forms the browser object:

BrowserNotificationOptions {
    title?: string;
    body?: string;
    onClick?: (notification: Notification, event: Event) => void;
    onClose?: (notification: Notification, event: Event) => void;
    onShow?: (notification: Notification, event: Event) => void;
    onError?: (notification: Notification, event: Event) => void;
    options?: NotificationOptions;
}

If no browser key is passed to options, Flex will not show any browser notifications.

Default standard notifications

NotificationId	Notification type	概要	Default text of the notification	UI template code
PendingReservationsOnLogout	error	A logout is forbidden while a worker has pending reservations	You cannot logout while you have a pending task/reservation	PendingReservationsOnLogoutNotification
PendingReservationsOnActivityStateChange	error	Actitivity state cannot be changed while a worker has pending reservations	You cannot update your activity while you have a pending task/reservation	PendingReservationsOnActivityStateChangeNotification
TransferFailed	error	Task transfer failed due to recipient worker being unavailable	Agent unavailable	TransferFailedNotification
BrowserVoiceDisabled	error	Voice task accept failed due to Voice SDK being disabled	Call cannot be accepted. Twilio Voice SDK has been disabled.	BrowserVoiceDisabledNotification
MicTaken	error	Accessing the microphone has failed	Unable to access microphone, please check browser settings.	MicNotAvailableNotification
CannotChangeOtherWorkerActivity	error	Changing a worker's activity by the supervisor has failed due to the worker having pending reservations	You cannot change an agent’s activity while they have a pending task/reservation.	CannotChangeOtherWorkerActivity
MonitoringFailed	error	Initiating call monitoring has failed	Monitoring attempt has failed	MonitoringFailedNotification
MessageSizeExceeded	error	Sending chat message has failed due to an exceeded character limit	The entered character number exceeds the limit - {{currentCharCount}}/{{maxCharCount}}	MessageSizeExceeded
ChatOrchestrationAddToChatChannelFailed	error	The worker could not be added to the chat channel after accepting chat based task	Failed to add worker to the chat channel.	ChatOrchestrationAddToChatChannelFailed
ChatOrchestrationDeactivateChatChannelFailed	error	Chat channel could not be deactivated during wrapping up of chat based task	Failed to deactivate the chat channel.	ChatOrchestrationDeactivateChatChannelFailed
ChatOrchestrationLeaveChatChannelFailed	error	Could not remove worker from chat channel during wrapping up of chat based task	Failed to remove worker from the chat channel.	ChatOrchestrationLeaveChatChannelFailed
IncomingTask	info	Notification for incoming task, with most properties dependent on task channel in question	Content depends on the type of task	Various templates depending on type of task
RequestBrowserNotificationPermissions	Warning	Notification for asking for browser notification rights	We need your permission to <a href='#'>enable browser notifications</a>	RequestBrowserNotificationPermissions
NewChatMessage	only browser	Notification shown when new chat message is received	Content depends on the type of task	NewChatMessageNotificationTitle NewChatMessageNotificationBody

Working with Notifications

Register a custom notification with Browser notification handler

Flex.Notifications.registerNotification({
    id: "customNotification",
    closeButton: true,
    content: "Custom Notification",
    timeout: 0,
    type: NotificationType.warning,
    actions: [
        <NotificationBar.Action
            onClick={(_, notification) => {
                Flex.Notifications.dismissNotification(notification);
            }}
            label="Hello"
            icon="Bell"
        />
    ],
    options: {
      browser: {
          title: "Custom Notification",
          body: "Hello World!"
      }
  }
});

Override standard notifications for a specific task type using Task Channel Definitions API

Use custom notification for new reservation of a Call task

Flex.DefaultTaskChannels.Call.notifications.override.IncomingTask = () => {
  Flex.Notifications.showNotification("customNotification");
}

Change content of a standard notification for incoming call task

Flex.DefaultTaskChannels.Call.notifications.override.IncomingTask = (notification) => {
  notification.content: "Hello, world!";
};

Change content of a standard notification for new chat message

Flex.DefaultTaskChannels.Call.notifications.override.NewChatMessage = (notification) => {
  notification.content = "Hello, world!";
};

Turn off Standard Notifications

Do not show notificationBar notifications

MainContainer.defaultProps.showNotificationBar = false;

Disable notification by ID

Notifications.registeredNotifications.delete("notification_id");

Customize Standard Notifications

Change text of the notification

const notification = Notifications.registeredNotifications.get("notificationId");
notification.content = "Display some text";

Change text of the notification with template

manager.strings.myNotification = "Current time: {{time}}"
const notification = Notifications.registeredNotifications.get("notificationId");
notification.content = "myNotification";
Notifications.showNotification("notificationId", {time: Date.now()})

Read more about templates in Localization and UI templating

Render custom component in a notification

const notification = Notifications.registeredNotifications.get("notificationId");
notification.content = <MyAwesomePopup/>;

Change props of the notification

const notification = Notifications.registeredNotifications.get("PendingReservationsOnActivityStateChange");
notification.content = "Some text to display";
notification.backgroundColor = "blue";
notification.closeButton = false;

Register Custom Notifications

Option 1: string

Notifications.registerNotification({
id: "myNotificationId",
content: "Custom content", // string
type: NotificationType.error
});

Option 2: template

Notifications.registerNotification({
id: "myNotificationId",
content: "NotificationMessage", // template
type: NotificationType.error
});

Read more about templates in Localization and UI templating

Option 3: custom React component

interface CustomNotificationProps extends NotificationContentProps {
   customProp?: string;
   notificationContext?: any;
}

export class CustomNotificationElement extends React.Component<CustomNotificationProps, undefined> {
   render() {
       const { customProp, notificationContext } = this.props;
       return(
           <div>
               {notificationContext.message}
               <div />
               {customProp}
           </div>
       );
   }
}


Notifications.registerNotification({
    id: "myNotificationId",
    content: <CustomNotificationElement customProp="custom prop" />,
    type: NotificationType.error
    } 
);

Dispatch Custom Notifications

Option 1: string

Notifications.showNotification("myNotificationId", null);

Option 2 & 3: template & custom React component

Notifications.showNotification("myNotificationId", { message: "custom context" } );

Add Custom Notification Event Listeners

import * as Flex from "@twilio/flex-ui";

Flex.Notifications.addListener("beforeAddNotification", (payload) => {
  console.log("<---beforeTransferTask Listener--->", payload);
});

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