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				// Copyright (c) 2018 The Bitcoin Core developers
				// Distributed under the MIT software license, see the accompanying
				// file COPYING or http://www.opensource.org/licenses/mit-license.php.

				#ifndef BITCOIN_INTERFACES_WALLET_H
				#define BITCOIN_INTERFACES_WALLET_H

				#include <functional>
				#include <memory>
				#include <string>

				class CWallet;

				namespace interfaces {

				class Handler;

				//! Interface for accessing a wallet.
				class Wallet {
				public:
				virtual ~Wallet() {}

				//! Register handler for show progress messages.
				using ShowProgressFn =
				std::function<void(const std::string &title, int progress)>;
				virtual std::unique_ptr<Handler> handleShowProgress(ShowProgressFn fn) = 0;
				};

				//! Return implementation of Wallet interface. This function will be undefined
				//! in builds where ENABLE_WALLET is false.
				std::unique_ptr<Wallet> MakeWallet(CWallet &wallet);

				} // namespace interfaces

				#endif // BITCOIN_INTERFACES_WALLET_H