Implementing Custom Wallet Selection for a Decentralized Application (DAPP)

As decentralized developers (Dapps), we usually want to provide users with the flexibility of choosing their favorite portfolio when interacting with our platform. In this article, we will explore how to achieve this using the Metamask Web3 library and its window.ethereum.enable () function.

Understanding the Web3 Library

Before diving into implementation, it is essential to understand how the Metamask Library interacts with Blockchain Ethereum. The window.ethereum object provides an interface to interact with the user’s wallet, which is stored in the browser as a web encryption provider (Web3).

The window.ethereum.enable () function () allows users to select their favorite portfolio from the supported suppliers list. This includes popular wallets like Metamask, Coinbase Wallet and others.

Implementing Personalized Wallet Selection

To implement the personalized portfolio selection for your Dapp, you can use the following approach:

  • Get the user’s web3 provider

    Metamask: As a developer how to let user of your DAPP choose the preferred wallet

    : Use window.ethereum.enable () To get the object of the user’s web3 provider (eg metamask).

  • Get supported wallets : Recover a list of supported portfolio providers from the window.ethereum usingWindow.ethereum.supportedwallets.

  • Select the preferred wallet : Use the recovered list to select the favorite wallet and inject -a in your DAPP.

Here is an example of implementation:

`JavaScript

GetPreFerredwallet () {

CONST Ethereum = Window.ethereum;

Constt Supportdwallets = Ethereum.supportedwallets;

// Filter Wallets by User’s favorite provider (eg metamask)

CONST PREFERREDWALLETS = Supportdwallets.filter ((provider) => provider.name === ‘metamask’);

Return Preferredwallets;

}

// Call the function to obtain the preferred wallet

CONST PREFERREDWALLET = GETPREFEREDWALLET ();

IF (Preferredwallet.length> 0) {

// Inject the selected wallet into your DAPP

CONST WALLETPROVIDER = Window.ethereum.currentProvider;

IF (WalletProvider) {

Window.ethereum.currentProvider.on (“Connected”, () => {

console.log (connected to $ {WalletProvider.Name});

});

}

}

`

Example of case use

Suppose you are building a DAPP that uses the metamask portfolio provider. In this case, your code would be like this:

`JavaScript

Import Web3 of “Web3”;

CONST Web3 = new Web3 (Window.ethereum);

// Function to obtain the preferred wallet

GetPreFerredwallet () {

CONST Ethereum = Window.ethereum;

CONST SUPPORTDWALLETS = ETHERUM.supportedwallets;

// Filter Wallets by User’s favorite provider (eg metamask)

CONST PREFERREDWALLETS = Supportdwallets.filter ((provider) => provider.name === ‘metamask’);

Return Preferredwallets;

}

// Call the function to obtain the preferred wallet

CONST PREFERREDWALLET = GETPREFEREDWALLET ();

IF (Preferredwallet.length> 0) {

// Inject the selected wallet into your DAPP

Window.ethereum.currentProvider.on (“Connected”, () => {

console.log (connected to $ {window.ethereum.currentProvider.Name});

});

}

`

In this example, when a user login with the metamask portfolio provider, their code will detect the preferred wallet and inject it into its DAPP.

Conclusion

Implementing the personalized portfolio selection for your Dapps can help provide users’ flexibility and control over their portfolio providers. By using the window.ethereum object and filtering the portfolios supported by the user’s favorite provider (for example, metamask), you can create a perfect experience for your users. Remember to call the getpreferredwallet () `to get the favorite wallet and inject it into your Dapp.

دسته‌ها: CRYPTOCURRENCY