// Copyright (c) 2011-2013 The Bitcoin developers // Distributed under the MIT/X11 software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. #ifndef WALLETMODEL_H #define WALLETMODEL_H #include "paymentrequestplus.h" #include "walletmodeltransaction.h" #include "allocators.h" /* for SecureString */ #include #include #include class AddressTableModel; class OptionsModel; class TransactionTableModel; class WalletModelTransaction; class CCoinControl; class CKeyID; class COutPoint; class COutput; class CPubKey; class CWallet; class uint256; QT_BEGIN_NAMESPACE class QTimer; QT_END_NAMESPACE class SendCoinsRecipient { public: explicit SendCoinsRecipient() : amount(0) { } explicit SendCoinsRecipient(const QString &addr, const QString &label, quint64 amount, const QString &message): address(addr), label(label), amount(amount), message(message) {} // If from an insecure payment request, this is used for storing // the addresses, e.g. address-A
address-B
address-C. // Info: As we don't need to process addresses in here when using // payment requests, we can abuse it for displaying an address list. // Todo: This is a hack, should be replaced with a cleaner solution! QString address; QString label; qint64 amount; // If from a payment request, this is used for storing the memo QString message; // If from a payment request, paymentRequest.IsInitialized() will be true PaymentRequestPlus paymentRequest; // Empty if no authentication or invalid signature/cert/etc. QString authenticatedMerchant; }; /** Interface to Bitcoin wallet from Qt view code. */ class WalletModel : public QObject { Q_OBJECT public: explicit WalletModel(CWallet *wallet, OptionsModel *optionsModel, QObject *parent = 0); ~WalletModel(); enum StatusCode // Returned by sendCoins { OK, InvalidAmount, InvalidAddress, AmountExceedsBalance, AmountWithFeeExceedsBalance, DuplicateAddress, TransactionCreationFailed, // Error returned when wallet is still locked TransactionCommitFailed, Aborted }; enum EncryptionStatus { Unencrypted, // !wallet->IsCrypted() Locked, // wallet->IsCrypted() && wallet->IsLocked() Unlocked // wallet->IsCrypted() && !wallet->IsLocked() }; OptionsModel *getOptionsModel(); AddressTableModel *getAddressTableModel(); TransactionTableModel *getTransactionTableModel(); qint64 getBalance(const CCoinControl *coinControl = NULL) const; qint64 getUnconfirmedBalance() const; qint64 getImmatureBalance() const; int getNumTransactions() const; EncryptionStatus getEncryptionStatus() const; // Check address for validity bool validateAddress(const QString &address); // Return status record for SendCoins, contains error id + information struct SendCoinsReturn { SendCoinsReturn(StatusCode status = Aborted): status(status) {} StatusCode status; }; // prepare transaction for getting txfee before sending coins SendCoinsReturn prepareTransaction(WalletModelTransaction &transaction, const CCoinControl *coinControl = NULL); // Send coins to a list of recipients SendCoinsReturn sendCoins(WalletModelTransaction &transaction); // Wallet encryption bool setWalletEncrypted(bool encrypted, const SecureString &passphrase); // Passphrase only needed when unlocking bool setWalletLocked(bool locked, const SecureString &passPhrase=SecureString()); bool changePassphrase(const SecureString &oldPass, const SecureString &newPass); // Wallet backup bool backupWallet(const QString &filename); // RAI object for unlocking wallet, returned by requestUnlock() class UnlockContext { public: UnlockContext(WalletModel *wallet, bool valid, bool relock); ~UnlockContext(); bool isValid() const { return valid; } // Copy operator and constructor transfer the context UnlockContext(const UnlockContext& obj) { CopyFrom(obj); } UnlockContext& operator=(const UnlockContext& rhs) { CopyFrom(rhs); return *this; } private: WalletModel *wallet; bool valid; mutable bool relock; // mutable, as it can be set to false by copying void CopyFrom(const UnlockContext& rhs); }; UnlockContext requestUnlock(); bool getPubKey(const CKeyID &address, CPubKey& vchPubKeyOut) const; void getOutputs(const std::vector& vOutpoints, std::vector& vOutputs); void listCoins(std::map >& mapCoins) const; bool isLockedCoin(uint256 hash, unsigned int n) const; void lockCoin(COutPoint& output); void unlockCoin(COutPoint& output); void listLockedCoins(std::vector& vOutpts); private: CWallet *wallet; // Wallet has an options model for wallet-specific options // (transaction fee, for example) OptionsModel *optionsModel; AddressTableModel *addressTableModel; TransactionTableModel *transactionTableModel; // Cache some values to be able to detect changes qint64 cachedBalance; qint64 cachedUnconfirmedBalance; qint64 cachedImmatureBalance; qint64 cachedNumTransactions; EncryptionStatus cachedEncryptionStatus; int cachedNumBlocks; QTimer *pollTimer; void subscribeToCoreSignals(); void unsubscribeFromCoreSignals(); void checkBalanceChanged(); signals: // Signal that balance in wallet changed void balanceChanged(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance); // Number of transactions in wallet changed void numTransactionsChanged(int count); // Encryption status of wallet changed void encryptionStatusChanged(int status); // Signal emitted when wallet needs to be unlocked // It is valid behaviour for listeners to keep the wallet locked after this signal; // this means that the unlocking failed or was cancelled. void requireUnlock(); // Fired when a message should be reported to the user void message(const QString &title, const QString &message, unsigned int style); // Coins sent: from wallet, to recipient, in (serialized) transaction: void coinsSent(CWallet* wallet, SendCoinsRecipient recipient, QByteArray transaction); public slots: /* Wallet status might have changed */ void updateStatus(); /* New transaction, or transaction changed status */ void updateTransaction(const QString &hash, int status); /* New, updated or removed address book entry */ void updateAddressBook(const QString &address, const QString &label, bool isMine, const QString &purpose, int status); /* Current, immature or unconfirmed balance might have changed - emit 'balanceChanged' if so */ void pollBalanceChanged(); }; #endif // WALLETMODEL_H