@tef-novum/webview-bridge

JavaScript library to access to native functionality. Requires a webview with a postMessage bridge.

Library size ~1.2 Kb (min + gzip)

AMD, UMD, IIFE, ES Module builds available (see package dist folder). Open an issue if you need a different build.

Usage

NPM

We recommend to manage your dependencies using npm or yarn and use a bundler like webpack or parcel. Once configured, you can use ES imports.

Install using npm:

npm i @tef-novum/webview-bridge

Install using yarn:

yarn add @tef-novum/webview-bridge

Import required function and use it:

import {setWebViewTitle} from '@tef-novum/webview-bridge';

setWebViewTitle('Hello, world');

CDN

Alternatively, you can import the library directly from a CDN:

<script src="https://unpkg.com/@tef-novum/webview-bridge/dist/webview-bridge-iife.min.js"></script>

<script>
    webviewBridge.setWebViewTitle('Hello, world');
</script>

API

• isWebViewBridgeAvailable
• requestContact
• createCalendarEvent
• share
• updateNavigationBar
• nativeConfirm
• nativeAlert
• nativeMessage
• logEvent
• setScreenName
• setUserProperty
• reportStatus
• checkPermissionStatus
• internalNavigation
• dismiss
• fetchContactsByPhone
• getAppMetadata
• setCustomerHash
• getDiskSpaceInfo
• getEsimInfo
• setTrackingProperty
• setActionBehavior

isWebViewBridgeAvailable

Returns true if WebView Bridge is available. Use this function to implement fallbacks in case the bridge is not available.

isWebViewBridgeAvailable: () => boolean;

Inside an iframe

By default, the bridge will be disabled inside an iframe. If you want to enable it, add a data-enable-webview-bridge attribute to the host iframe element.

Example

import {isWebViewBridgeAvailable, nativeAlert} from '@tef-novum/webview-bridge';

if (isWebViewBridgeAvailable()) {
    nativeAlert('Hello'); // use bridge
} else {
    myCustomAlert('Hello'); // use alternative implementation
}

You may want to detect if the page is displayed inside a regular browser or an Android or iOS WebView.

import {isWebViewBridgeAvailable} from '@tef-novum/webview-bridge';

/** Returns true if application is running inside a Novum App WebView */
const isWebView = () => isWebViewBridgeAvailable();

/** Returns true if application is running inside a Novum App WebView running on Android */
const isAndroidWebView = () =>
    isWebViewBridgeAvailable() && navigator.userAgent.includes('Android');

/** Returns true if application is running inside a Novum App WebView running on iOS */
const isIOSWebView = () =>
    isWebViewBridgeAvailable() && !navigator.userAgent.includes('Android');

requestContact

Show native picker UI in order to let the user select a contact.

• Android only: picker UI elements can be filtered by available phones (default) or emails. filter property is ignored by iOS devices

requestContact: ({filter?: 'phone' | 'email'}) => Promise<{
    name?: string;
    email?: string;
    phoneNumber?: string;
    address?: {
        street?: string;
        city?: string;
        country?: string;
        postalCode?: string;
    };
}>;

All fields in response object are optional

Example

import {requestContact} from '@tef-novum/webview-bridge';

requestContact({filter: 'phone'}).then((contact) => {
    console.log(contact);
}).catch(err => {
    console.error(err);
};

createCalendarEvent

Inserts an event in calendar

createCalendarEvent: ({
    beginTime: number,
    endTime: number,
    title: string
}) => Promise<void>;

beginTime and endTime are timestamps with millisecond precision

Example

import {createCalendarEvent} from '@tef-novum/webview-bridge';

createCalendarEvent({
    beginTime: new Date(2019, 10, 06).getTime(),
    endTime: new Date(2019, 10, 07).getTime(),
    title: "Peter's birthday",
}).then(() => {
    console.log('event created');
}).catch(err => {
    console.error(err);
};

share

Invokes the native sharing mechanism of the device.

• Available for app versions 10.7 and higher
• Returning promise will be rejected if not supported (app versions lower than 10.7)

type ShareOptions =
    | {
          text: string;
      }
    | {
          url: string;
          fileName: string;
          text?: string;
      };

share: (options: ShareOptions) => Promise<void>;

• If no url is present, text is used as item to share
• If url param is present, it contains the URL to the shared file
• fileName param is mandatory if url is set
• If url and text are set, text is used as Intent BODY (if platform allows it)

Example

import {share} from '@tef-novum/webview-bridge';

// sharing a text string
share({text: 'Hello, world!'});

// sharing a file
share({url: 'https://path/to/file', fileName: 'lolcats.png'});

updateNavigationBar

Customize WebView NavigationBar properties

• You can set one or more properties in a single call
• Available for app versions 10.7 and higher
• Returning promise will be rejected if not supported (app versions lower than 10.7)

updateNavigationBar = ({
    title?: string;
    expandedTitle?: string;
    showBackButton?: boolean;
    showReloadButton?: boolean;
    showProfileButton?: boolean;
    backgroundColor?: string;
}) => Promise<void>

• title: updates NavigationBar title
• expandedTitle: updates NavigationBar expandedTitle. If the value is an empty string, the expanded navigation bar will not be shown. Only available in native app versions >= 11.8
• showBackButton: shows or hides back icon in NavigationBar
• showReloadButton: shows or hides NavigationBar Reload button
• showProfileButton: shows or hides NavigationBar Profile button (which navigates to user profile). Only available in native app versions >= 11.7
• backgroundColor: change NavigationBar background color, use a hex color string (for example: '#FF128A')

Examples

import {updateNavigationBar} from '@tef-novum/webview-bridge';

// updates WebView NavigationBar title
updateNavigationBar({title: 'Hello, World!'});

// full featured example
updateNavigationBar({
    title: 'Hello',
    expandedTitle: 'Hello, World!',
    showBackButton: true,
    showReloadButton: false,
    showProfileButton: false,
    backgroundColor: '#FF0000', // red
});

isABTestingAvailable

Returns true if A/B testing named with the key is available.

• Available for app versions 10.8 and higher
• Returning promise will be rejected if not supported (app versions lower than 10.8)

isABTestingAvailable: (key: string) => Promise<boolean>;

Example

import {isABTestingAvailable} from '@tef-novum/webview-bridge';

isABTestingAvailable('key').then((isAvailable) => {
    console.log(isAvailable);
}).catch(err => {
    console.error(err);
};

nativeConfirm

Show a native confirm dialog.

If the bridge is not present (eg. showing the page in browser), fallbacks to a browser confirm.

nativeConfirm: ({
    message: string;
    title?: string;
    acceptText: string;
    cancelText: string;
}) => Promise<boolean>;

Example

import {nativeConfirm} from '@tef-novum/webview-bridge';

nativeConfirm({
    title: 'Confirm',
    message: 'Send message?',
    acceptText: 'Yes',
    cancelText: 'No',
}).then((res) => {
    if (res) {
        console.log('message sent');
    }
});

nativeAlert

Show a native alert dialog.

If the bridge is not present (eg. showing the page in browser), fallbacks to a browser alert.

nativeAlert: ({
    message: string;
    title?: string;
    buttonText: string;
}) => Promise<void>;

Example

import {nativeAlert} from '@tef-novum/webview-bridge';

nativeAlert({
    message: 'Purchase completed!',
    title: 'Ok!',
}).then((res) => {
    console.log('alert closed');
});

nativeMessage

Show a native message dialog. Use it to display feedback messages.

If the bridge is not present (eg. showing the page in browser), fallbacks to a browser alert.

• buttonText property is ignored in iOS.

nativeMessage: ({
        message: string;
        duration?: number; // milliseconds
        buttonText?: string; // Android only
        type?: 'INFORMATIVE' | 'CRITICAL' | 'SUCCESS';
}) => Promise<void>;

Example

Show a native "snackbar" with a configurable duration and optional close button

import {nativeMessage} from '@tef-novum/webview-bridge';

nativeMessage({
    message: 'Operation finished!',
    buttonText: 'Ok',
    duration: 5000, // 5 seconds
}).then((res) => {
    console.log('alert closed');
});

logEvent

Log an event to firebase

logEvent: ({
    category: string; // Typically the object that was interacted with (e.g. 'Video')
    action: string; // The type of interaction (e.g. 'play')
    label?: string; // Useful for categorizing events (e.g. 'Fall Campaign')
    value?: number; // A numeric value associated with the event (e.g. 43)
}) => Promise<void>;

Example

import {logEvent} from '@tef-novum/webview-bridge';

logEvent({
    category: 'topup-flow',
    action: 'topup',
}).then(() => {
    console.log('event logged');
});

setScreenName

Log the current screen name (or page name) to firebase

setScreenName: (screenName: string) => Promise<void>;

Example

import {setScreenName} from '@tef-novum/webview-bridge';

setScreenName('Topup Flow').then(() => {
    console.log('screen name logged');
});

setUserProperty

Set a user property to firebase

setUserProperty: ({
    name: string;
    value: string;
}) => Promise<void>;

Example

import {setUserProperty} from '@tef-novum/webview-bridge';

setUserProperty({
    name: 'obIds',
    value: 'any-value',
}).then(() => {
    console.log('User property logged');
});

reportStatus

Report a given feature status

• Available for app versions 11.2 and higher

reportStatus: ({feature: 'ACCOUNT', status: 'CRITICAL' | 'GOOD' | 'BAD', reason: string}) => Promise<void>;

Example

import {reportStatus} from '@tef-novum/webview-bridge';

reportStatus({feature: 'ACCOUNT', status: 'GOOD', reason: 'whatever'});

onNativeEvent

Listens to native app events

• Available for app versions 11.3 and higher

type NativeEventHandler = ({ event }: {event: string}) => {action: 'default'};

onNativeEvent: (handler: NativeEventHandler) => () => void;

Example

onNativeEvent(({event}) => {
    if (event === 'tappedNavigationBarBackButton') {
        // do something
    }
    return {action: 'default'};
});

Available events

• tappedNavigationBarBackButton: fired when the user taps on the back button of the native Navigation Bar. Allowed response actions: default

checkPermissionStatus

Returns true if the app has the specific notifications permissions. You have to pass feature and required params for this request.

• Available for app versions 11.4 and higher

Avalaible features:

• notifications

checkPermissionStatus: (feature: string, params?: {[key: string]: string}) => Promise<boolean>;

Example

import {checkPermissionStatus} from '@tef-novum/webview-bridge';

checkPermissionStatus('notifications', {channelId: 'default'}).then(
    (hasPermissions) => {
        console.log(hasPermissions);
    },
);

internalNavigation

Init an internal and native navigation to a device specific feature

• Available for app versions 11.4 and higher

Avalaible features:

• notification-settings

internalNavigation: (feature: string) => Promise<void>;

Example

import {internalNavigation} from '@tef-novum/webview-bridge';

internalNavigation('notification-settings');

dismiss

Dismiss the current webview and optionally navigate to another url

• Available for app versions 11.5 and higher

dismiss: (onCompletionUrl?: string) => Promise<void>;

Example

import {dismiss} from '@tef-novum/webview-bridge';

dismiss('http://example.com');

requestVibration

Requests the phone to vibrate. Options are 'error' or 'success'.

import {requestVibration} from '@tef-novum/webview-bridge';

requestVibration('error');

fetchContactsByPhone

Returns contacts info given an array of phone numbers.

fetchContactsByPhone: (phoneNumbers: Array<string>) => Promise<Array<{
    phoneNumber: string;
    firstName?: string;
    middleName?: string;
    lastName?: string;
    encodedAvatar?: string;
}>>;

getAppMetadata

Check if an app is installed in the phone

• Available for app versions 11.8 and higher

getAppMetadata: (appToken: string) => Promise<{isInstalled: boolean; marketUrl: string; appUrl: string}>;

Example

import {getAppMetadata} from '@tef-novum/webview-bridge';

getAppMetadata('tokenAppToCheck').then(({isInstalled, marketUrl, appUrl}) => { ... });

• appToken: token that refers to a "friend" application
• appUrl: string url to launch an app installed on the phone
• marketUrl: string url to launch the store in a specific application

setCustomerHash

Sets the hash of the current subscription for the customer, which is used for tracking purposes.

import {setCustomerHash} from '@tef-novum/webview-bridge';

setCustomerHash(
    'e658ad63bef9b86863b487697dfb75d64bddb6191ec14099abe443655f6b7cc6',
);

getCustomerHash

Gets the hash of the current subscription for the customer, which is used for tracking purposes.

import {getCustomerHash} from '@tef-novum/webview-bridge';

getCustomerHash().then(({hash}) => { ... });

getDiskSpaceInfo

Return info about how much free disk space the device has

• Available for app versions 11.10 and higher

getDiskSpaceInfo: () => Promise<{availableBytes: number, totalBytes: number}>;

Example

import {getDiskSpaceInfo} from '@tef-novum/webview-bridge';

getDiskSpaceInfo().then(({availableBytes, totalBytes}) => { ... });

• availableBytes: number to see available bytes in the device
• totalBytes: number to see the total bytes in the device

getEsimInfo

Return info about the esim capabilities of the device

• Available for app versions 12.3 and higher

getEsimInfo: () => Promise<{supportsEsim: boolean}>;

Example

import {getEsimInfo} from '@tef-novum/webview-bridge';

getEsimInfo().then(({supportsEsim}) => { ... });

• supportsEsim: true if the device supports eSIM, false otherwise

setTrackingProperty

Sets a property related to some specific tracking system

• Available for app versions 12.4 and higher

setTrackingProperty: (system: 'palitagem' | 'medallia', name: string, value?: string) => Promise<void>;

• system: Tracking system that will handle the property
• name: name of the property
• value: value of the property (nullable)

setActionBehavior

Method that allows defining an specific behavior (such as showing a confirmation) before the specific native actions are executed. This method also allows disabling any previous behaviors set.

• Available for app versions 12.7 and higher

type ActionBehavior =
    | {
        behavior: 'confirm';
        title: string;
        message: string;
        acceptText: string;
        cancelText: string;
    }
    | {
        behavior: 'default';
    }
    | {
        behavior: 'cancel';
    };

setActionBehavior: (actions: {webviewClose?: ActionBehavior, navigationBack?: ActionBehavior}) => Promise<void>;

navigationBack and webviewClose actions are currently available:

• navigationBack: Action bar back button pressed (also for physical back button in android but not swipe back gesture in iOS, which will be disabled).
• webviewClose: Action bar close button pressed. Includes both "X" and "Close" buttons (but not swipe down gesture in iOS, which will be disabled).

Both have same allowed json parameters, and 3 allowed behaviors:

• confirm Show a confirmation dialog with the required title, message and buttons.
• cancel Prevent action from being performed, just ignoring it.
• default Set default behavior for the action. (Usually to reset any previously specified behavior).

Actions can be optionally included in the payload. Any not included action won’t change its current behavior set.

All actions behaviors will be automatically set to default on full page loads.

Example

import {setTrackingProperty} from '@tef-novum/webview-bridge';

setTrackingProperty('some_system', 'some_property_name', 'some_property_value');

Error handling

If an error occurs, promise will be rejected with an error object:

{code: number, description: string}

License

This project is licensed under the terms of the MIT license. See the LICENSE file.

Changelog

v.3.6.0 - 2022-05-23

• BRIDGE_READY message