Introduction

With the @consenlabs-fe/webview, you can easily access and use the various interfaces built into the imToken WebView environment. Whether you're migrating a DApp to imToken or adapting a Web application, you can quickly solve it with minimal code and minimal invasiveness.

The SDK includes functions to obtain the language environment, common native UI, route navigation, scan QR codes, etc. The SDK itself does not contain dependencies and is only used as a tool to bond the host environment and will not cause any invasive damage to your project.

Features

Complete TypeScript support

All interfaces and methods have full type support.

Multi-module support

In modern front-end projects, the esm mode is used by default, but we also provide cjs umd and ways.

Promise

Based on v1, all our asynchronous interfaces support promise by default.

Community

We've added support for the community, where you can create a discussion for any questions about the API or tools.

Getting started

If you are looking for a complete project example, please check out the sample applications we have prepared:

• React project sample: examples/react-app​

• Vue project sample: examples/vue-app​

• UMD project sample: examples/umd​

Install

You can use the package management tool to install @consenlabs-fe/webview , this is the recommended way. For this, your project may need the NodeJS environment with the NPM management tool. (or Yarn)

NPM: (recommended installation)

npm i @consenlabs-fe/webview

Yarn:

yarn add @consenlabs-fe/webview

CDN:

@consenlabs-fe/webview is available on unpkg and jsdelivr. (the CDN may require some time synchronization, please note the version you are using)

<script src="https://cdn.jsdelivr.net/npm/@consenlabs-fe/webview/dist/index.min.js" />

Import and usage

Before you can use it, you need to import the module:

import TokenWebView from '@consenlabs-fe/webview'

As a suggestion to maintain compatibility, we recommend that you always check the current environment first:

if (TokenWebView.isTokenEnv()) {
  TokenWebView.apis.navigator.setTitle('hello world')
}

​

API References

All API interfaces, types, and examples are listed here. In fact, if you are using TypeScript, you can already get good type hints in your project.

General

This is the API that comes with the root module and is usually used to check the environment and the processing of generic scenarios.

isTokenEnv

Check if the current context is imToken WebView and return a boolean value.

Types

type isTokenEnv = () => boolean 

Usage Example

console.log('Currently in imToken: ', TokenWebView.isTokenEnv())

​

getVersion

Get the current version of the imToken App.

Types

type getVersion = () => string

Usage Example

console.log('Currently version: ', TokenWebView.getVersion())
​
// output -> 'Currently version: 2.4.0'

​

isGreaterThanOrEqualVersion

The current App version is greater than or equal to the specified value.

Types

type isGreaterThanOrEqualVersion = (version: string) => boolean

Usage Example

const state = TokenWebView.isGreaterThanOrEqualVersion('2.1.0')
console.log('Version greater than or equal to 2.1.0: ', state )
​
// output -> 'Version greater than or equal to 2.1.0: true'

​

compareSemver

Compare the two versions of the value and return the number.

Requires that the comparison value must be a semantic version of the string. The return value rules are the same as for the JavaScript sort function.

Types

type compareSemver = (versionA: string, versionB: string) => number

Usage Example

const state = TokenWebView.compareSemver('2.1.0', '2.2.0')
console.log(state)
​
// output -> '0'

​

isCancelError

Check if the current error was caused by a user cancellation.

Types

type isCancelError = (error: Error) => boolean

Usage Example

try {
  // ...
} catch (err) {
  if (TokenWebView.isCancelError(err)) {
    console.log('User cancelled the operation')
  }
}

​

ERRORS

Error constants. The source of the error message, most of the time you do not need to compare this constant.

Types

type ERRORS = Record<string, string>

​

apis

API for communicating with the host environment, please see below for details.

​

device API

getCurrentLanguage

Get the current language environment, which usually comes from the user's settings within the imToken application.

Types

type getCurrentLanguage = () => Promise<string>

Usage Example

const language = await TokenWebView.apis.device.getCurrentLanguage()
console.log(language)
​
// output -> 'en-us'

​

getCurrentCurrency

Get the current currency, returns the currency string.

Types

type getCurrentCurrency = () => Promise<string>

Usage Example

const currency = await TokenWebView.apis.device.getCurrentCurrency()
console.log(currency)
​
// output -> 'CNY'

​

native API

Provide native platform UI and interaction capabilities.

alert

Display the string as an alert box.

Types

type alert = (content: string) => void

Usage Example

TokenWebView.apis.native.alert('hello world!')

​

confirm

Display the string as a confirm box.

A user clicks on the confirm or cancel button action will be returned as a Boolean value.

Types

type confirm = (content: {
  title: string
  message: string
  cancelText: string
  confirmText: string
}) => Promise<boolean>

Usage Example

const isConfirmDeletion = await TokenWebView.apis.native.confirm({
  title: 'Second Confirmation',
  message: 'Remove current connection?',
  confirmText: 'ok',
  cancelText: 'NO',
})

​

setLoading

Set the entire WebView to the loading state.

Types

type setLoading = (visible: boolean) => void

Usage Example

if (myTaskLoading) {
  TokenWebView.apis.native.setLoading(true)
}

​

share

Share a link or picture.

If the shared content is an image, it needs to be pre-converted to base64 format.

The success of the sharing depends on the user's confirmation and whether the user allows permissions.

Types

type ShareParamsDefault = {
  title: string
  message: string
  url: string
}
​
type ShareParamsImage = {
  title: string
  image: string
}
​
type share = (params: ShareParamsDefault & ShareParamsImage) => Promise<boolean>

Usage Example

const isSuccess = await TokenWebView.apis.native.share({
  title: 'Share',
  message: 'Share this page with others',
  url: location.href,
})

​

scanQRCode

Evoke the camera to scan the QR code, if the scan is successful, the parsed string will be returned.

Types

type scanQRCode = () => Promise<string>

Usage Example

try {
  const text = await TokenWebView.apis.native.scanQRCode()
} catch (err) {
  console.log('scan failed.')
}
​

​

setClipboard

Filling the user's clipboard with strings.

Types

type setClipboard = (text: string) => void

Usage Example

TokenWebView.apis.native.setClipboard('address')
​

​

navigator API

Routing navigation and settings page.

closeDapp

Close the current DApp.

Types

type closeDapp = () => void

Usage Example

TokenWebView.apis.navigator.closeDapp()

​

goBack

Returns the previous level of routing, or closes the app if there is no routing stack.

Types

type goBack = () => void

Usage Example

TokenWebView.apis.navigator.goBack()

​

routeTo

Navigate to a specific screen.

Types

type RouteToParams = {
  screen: string 
  props: {
    title: string
    url: string
  }
}
​
type routeTo = (params: RouteToParams) => void

Usage Example

// Jump to other DApps
​
TokenWebView.apis.navigator.routeTo({
  screen: 'DappView',
  props: {
    title: 'DApp API Examples',
    url: 'https://consenlabs.github.io/',
  },
})

​

getOrientation

Get the direction of the current device.

Types

type Orientation = 'LANDSCAPE' | 'PORTRAIT'
​
type getOrientation = () => Promise<Orientation>

Usage Example

const orientation = await TokenWebView.apis.navigator.getOrientation()
console.log(orientation)
​
// output -> 'LANDSCAPE'

​

setOrientation

Set the orientation of the current device, which can be very helpful when playing multimedia messages.

Types

type Orientation = 'LANDSCAPE' | 'PORTRAIT'
​
type setOrientation = (orientation: Orientation) => void

Usage Example

TokenWebView.apis.navigator.setOrientation('LANDSCAPE')

​

setTitle

Dynamically set DApp title. No effect to document.title.

Types

type setTitle = (title: string) => void

Usage Example

TokenWebView.apis.navigator.setTitle('MY DAPP')

​

user API

showAccountSwitch

Show switchable user wallets. If the switch is successful, the new address will be returned.

Types

type ChainType =
  | 'ETHEREUM'
  | 'BITCOIN'
  | 'LITECOIN'
  | 'EOS'
  | 'COSMOS'
  | 'TRON'
  | 'BITCOINCASH'
  | 'NERVOS'
  | 'KUSAMA'
  | 'POLKADOT'
  | 'FILECOIN'
  
type showAccountSwitch = (chainType: ChainType | null) => Promise<string>

Usage Example

const address = await TokenWebView.apis.user.showAccountSwitch('ETHEREUM')
console.log(address)
​
// output -> '0x...'

​

layout API

setOptions

Set the frame layout style of the WebView.

This updates the layout of the current WebView synchronously and can only be applied after the page has been loaded and parsed. If you want to make changes to the layout while the page is loading, please refer to our preload configuration documentation.

Types

type HexColor = `#${string}`
type StatusBarStyle = 0 | 1 | 2
​
type WebViewLayoutOptions = {
  background?: HexColor | Array<HexColor>
  foreground?: HexColor
  isTitleLeft?: boolean
  titleSize?: number
  isTransparent?: boolean
  transparentScrollY?: number
  loadingBackground?: HexColor
  loadingForeground?: HexColor
  bodyBackground?: HexColor
  bodyForeground?: HexColor
  statusBarStyle?: StatusBarStyle
}
​
type setOptions = (options: WebViewLayoutOptions) => void

Usage Example

TokenWebView.apis.layout.setOptions({
  background: '#000000',
  titleSize: 20,
})

​

internal API

Unstable API, mainly for advanced user custom development and debugging.