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annotate src/qt/walletmodel.h @ 3679:1e67262f9a28 draft default tip master

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Mention that Qt3 tools can cause build problems
author Jordi Gutiérrez Hermoso <jordigh@octave.org>
date Tue, 23 Oct 2012 13:17:23 -0400
parents 0f0aad98e2a6
children
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1 #ifndef WALLETMODEL_H
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2 #define WALLETMODEL_H
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3
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4 #include <QObject>
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5
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6 #include "allocators.h" /* for SecureString */
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7
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8 class OptionsModel;
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9 class AddressTableModel;
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10 class TransactionTableModel;
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11 class CWallet;
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12
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13 QT_BEGIN_NAMESPACE
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14 class QTimer;
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15 QT_END_NAMESPACE
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16
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17 class SendCoinsRecipient
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18 {
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19 public:
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20 QString address;
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21 QString label;
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22 qint64 amount;
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23 };
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24
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25 /** Interface to Bitcoin wallet from Qt view code. */
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26 class WalletModel : public QObject
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27 {
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28 Q_OBJECT
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29 public:
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30 explicit WalletModel(CWallet *wallet, OptionsModel *optionsModel, QObject *parent = 0);
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31 ~WalletModel();
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32
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33 enum StatusCode // Returned by sendCoins
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34 {
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35 OK,
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36 InvalidAmount,
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37 InvalidAddress,
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38 AmountExceedsBalance,
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39 AmountWithFeeExceedsBalance,
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40 DuplicateAddress,
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41 TransactionCreationFailed, // Error returned when wallet is still locked
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42 TransactionCommitFailed,
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43 Aborted
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44 };
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45
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46 enum EncryptionStatus
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47 {
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48 Unencrypted, // !wallet->IsCrypted()
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49 Locked, // wallet->IsCrypted() && wallet->IsLocked()
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50 Unlocked // wallet->IsCrypted() && !wallet->IsLocked()
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51 };
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52
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53 OptionsModel *getOptionsModel();
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54 AddressTableModel *getAddressTableModel();
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55 TransactionTableModel *getTransactionTableModel();
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56
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57 qint64 getBalance() const;
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58 qint64 getUnconfirmedBalance() const;
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59 qint64 getImmatureBalance() const;
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60 int getNumTransactions() const;
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61 EncryptionStatus getEncryptionStatus() const;
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62
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63 // Check address for validity
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64 bool validateAddress(const QString &address);
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65
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66 // Return status record for SendCoins, contains error id + information
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67 struct SendCoinsReturn
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68 {
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69 SendCoinsReturn(StatusCode status,
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70 qint64 fee=0,
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71 QString hex=QString()):
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72 status(status), fee(fee), hex(hex) {}
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73 StatusCode status;
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74 qint64 fee; // is used in case status is "AmountWithFeeExceedsBalance"
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75 QString hex; // is filled with the transaction hash if status is "OK"
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76 };
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77
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78 // Send coins to a list of recipients
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79 SendCoinsReturn sendCoins(const QList<SendCoinsRecipient> &recipients);
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80
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81 // Wallet encryption
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82 bool setWalletEncrypted(bool encrypted, const SecureString &passphrase);
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83 // Passphrase only needed when unlocking
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84 bool setWalletLocked(bool locked, const SecureString &passPhrase=SecureString());
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85 bool changePassphrase(const SecureString &oldPass, const SecureString &newPass);
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86 // Wallet backup
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87 bool backupWallet(const QString &filename);
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88
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89 // RAI object for unlocking wallet, returned by requestUnlock()
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90 class UnlockContext
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91 {
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92 public:
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93 UnlockContext(WalletModel *wallet, bool valid, bool relock);
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94 ~UnlockContext();
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95
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96 bool isValid() const { return valid; }
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97
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98 // Copy operator and constructor transfer the context
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99 UnlockContext(const UnlockContext& obj) { CopyFrom(obj); }
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100 UnlockContext& operator=(const UnlockContext& rhs) { CopyFrom(rhs); return *this; }
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101 private:
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102 WalletModel *wallet;
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103 bool valid;
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104 mutable bool relock; // mutable, as it can be set to false by copying
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105
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106 void CopyFrom(const UnlockContext& rhs);
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107 };
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108
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109 UnlockContext requestUnlock();
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110
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111 private:
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112 CWallet *wallet;
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113
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114 // Wallet has an options model for wallet-specific options
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115 // (transaction fee, for example)
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116 OptionsModel *optionsModel;
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117
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118 AddressTableModel *addressTableModel;
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119 TransactionTableModel *transactionTableModel;
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120
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121 // Cache some values to be able to detect changes
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122 qint64 cachedBalance;
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123 qint64 cachedUnconfirmedBalance;
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124 qint64 cachedImmatureBalance;
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125 qint64 cachedNumTransactions;
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126 EncryptionStatus cachedEncryptionStatus;
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127 int cachedNumBlocks;
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128
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129 QTimer *pollTimer;
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130
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131 void subscribeToCoreSignals();
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132 void unsubscribeFromCoreSignals();
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133 void checkBalanceChanged();
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134
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135 signals:
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136 // Signal that balance in wallet changed
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137 void balanceChanged(qint64 balance, qint64 unconfirmedBalance, qint64 immatureBalance);
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138
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139 // Number of transactions in wallet changed
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140 void numTransactionsChanged(int count);
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141
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142 // Encryption status of wallet changed
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143 void encryptionStatusChanged(int status);
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144
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145 // Signal emitted when wallet needs to be unlocked
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146 // It is valid behaviour for listeners to keep the wallet locked after this signal;
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147 // this means that the unlocking failed or was cancelled.
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148 void requireUnlock();
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149
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150 // Asynchronous error notification
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151 void error(const QString &title, const QString &message, bool modal);
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152
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153 public slots:
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154 /* Wallet status might have changed */
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155 void updateStatus();
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156 /* New transaction, or transaction changed status */
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157 void updateTransaction(const QString &hash, int status);
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158 /* New, updated or removed address book entry */
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159 void updateAddressBook(const QString &address, const QString &label, bool isMine, int status);
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160 /* Current, immature or unconfirmed balance might have changed - emit 'balanceChanged' if so */
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161 void pollBalanceChanged();
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162 };
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163
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164
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165 #endif // WALLETMODEL_H