101 lines
2.7 KiB
TypeScript
101 lines
2.7 KiB
TypeScript
import EventEmitter from 'eventemitter3';
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import { PublicKey, Transaction } from '@solana/web3.js';
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import { notify } from '../../utils/notifications';
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import { DEFAULT_PUBLIC_KEY, WalletAdapter } from '../types';
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type SolflareExtensionEvent = 'disconnect' | 'connect';
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type SolflareExtensionRequestMethod =
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| 'connect'
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| 'disconnect'
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| 'signTransaction'
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| 'signAllTransactions';
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interface SolflareExtensionProvider {
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publicKey?: PublicKey;
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isConnected?: boolean;
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autoApprove?: boolean;
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signTransaction: (transaction: Transaction) => Promise<Transaction>;
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signAllTransactions: (transactions: Transaction[]) => Promise<Transaction[]>;
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connect: () => Promise<void>;
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disconnect: () => Promise<void>;
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on: (event: SolflareExtensionEvent, handler: (args: any) => void) => void;
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off: (event: SolflareExtensionEvent, handler: (args: any) => void) => void;
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request: (method: SolflareExtensionRequestMethod, params: any) => Promise<any>;
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}
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export class SolflareExtensionWalletAdapter
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extends EventEmitter
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implements WalletAdapter {
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constructor() {
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super();
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this.connect = this.connect.bind(this);
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}
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private get _provider(): SolflareExtensionProvider | undefined {
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if ((window as any)?.solflare?.isSolflare) {
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return (window as any).solflare;
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}
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return undefined;
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}
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private _handleConnect = (...args) => {
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this.emit('connect', ...args);
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}
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private _handleDisconnect = (...args) => {
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this._provider?.off('connect', this._handleConnect);
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this._provider?.off('disconnect', this._handleDisconnect);
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this.emit('disconnect', ...args);
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}
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get connected() {
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return this._provider?.isConnected || false;
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}
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get autoApprove() {
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return this._provider?.autoApprove || false;
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}
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async signAllTransactions(
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transactions: Transaction[],
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): Promise<Transaction[]> {
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if (!this._provider) {
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return transactions;
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}
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return this._provider.signAllTransactions(transactions);
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}
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get publicKey() {
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return this._provider?.publicKey || DEFAULT_PUBLIC_KEY;
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}
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async signTransaction(transaction: Transaction) {
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if (!this._provider) {
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return transaction;
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}
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return this._provider.signTransaction(transaction);
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}
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async connect() {
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if (!this._provider) {
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window.open('https://solflare.com/', '_blank');
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notify({
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message: 'Connection Error',
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description: 'Please install Solflare extension',
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});
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return;
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}
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this._provider?.on('connect', this._handleConnect);
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this._provider?.on('disconnect', this._handleDisconnect);
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return this._provider?.connect();
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}
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async disconnect() {
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if (this._provider) {
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this._provider.disconnect();
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}
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}
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}
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