src/qt/walletmodel.cpp

   1 #include "walletmodel.h"
   2 #include "guiconstants.h"
   3 #include "optionsmodel.h"
   4 #include "addresstablemodel.h"
   5 #include "transactiontablemodel.h"
   6
   7 #include "headers.h"
   8
   9 #include <QTimer>
  10 #include <QSet>
  11
  12 WalletModel::WalletModel(CWallet *wallet, QObject *parent) :
  13     QObject(parent), wallet(wallet), optionsModel(0), addressTableModel(0),
  14     transactionTableModel(0),
  15     cachedBalance(0), cachedUnconfirmedBalance(0), cachedNumTransactions(0)
  16 {
  17     // Until signal notifications is built into the bitcoin core,
  18     //  simply update everything after polling using a timer.
  19     QTimer *timer = new QTimer(this);
  20     connect(timer, SIGNAL(timeout()), this, SLOT(update()));
  21     timer->start(MODEL_UPDATE_DELAY);
  22
  23     optionsModel = new OptionsModel(wallet, this);
  24     addressTableModel = new AddressTableModel(wallet, this);
  25     transactionTableModel = new TransactionTableModel(wallet, this);
  26 }
  27
  28 qint64 WalletModel::getBalance() const
  29 {
  30     return wallet->GetBalance();
  31 }
  32
  33 qint64 WalletModel::getUnconfirmedBalance() const
  34 {
  35     return wallet->GetUnconfirmedBalance();
  36 }
  37
  38 int WalletModel::getNumTransactions() const
  39 {
  40     int numTransactions = 0;
  41     CRITICAL_BLOCK(wallet->cs_mapWallet)
  42     {
  43         numTransactions = wallet->mapWallet.size();
  44     }
  45     return numTransactions;
  46 }
  47
  48 void WalletModel::update()
  49 {
  50     qint64 newBalance = getBalance();
  51     qint64 newUnconfirmedBalance = getUnconfirmedBalance();
  52     int newNumTransactions = getNumTransactions();
  53
  54     if(cachedBalance != newBalance || cachedUnconfirmedBalance != newUnconfirmedBalance)
  55         emit balanceChanged(newBalance, newUnconfirmedBalance);
  56
  57     if(cachedNumTransactions != newNumTransactions)
  58         emit numTransactionsChanged(newNumTransactions);
  59
  60     cachedBalance = newBalance;
  61     cachedUnconfirmedBalance = newUnconfirmedBalance;
  62     cachedNumTransactions = newNumTransactions;
  63
  64     addressTableModel->update();
  65 }
  66
  67 bool WalletModel::validateAddress(const QString &address)
  68 {
  69     CBitcoinAddress addressParsed(address.toStdString());
  70     return addressParsed.IsValid();
  71 }
  72
  73 WalletModel::SendCoinsReturn WalletModel::sendCoins(const QList<SendCoinsRecipient> &recipients)
  74 {
  75     qint64 total = 0;
  76     QSet<QString> setAddress;
  77     QString hex;
  78
  79     if(recipients.empty())
  80     {
  81         return OK;
  82     }
  83
  84     // Pre-check input data for validity
  85     foreach(const SendCoinsRecipient &rcp, recipients)
  86     {
  87         uint160 hash160 = 0;
  88
  89         if(!validateAddress(rcp.address))
  90         {
  91             return InvalidAddress;
  92         }
  93         setAddress.insert(rcp.address);
  94
  95         if(rcp.amount <= 0)
  96         {
  97             return InvalidAmount;
  98         }
  99         total += rcp.amount;
 100     }
 101
 102     if(recipients.size() > setAddress.size())
 103     {
 104         return DuplicateAddress;
 105     }
 106
 107     if(total > getBalance())
 108     {
 109         return AmountExceedsBalance;
 110     }
 111
 112     if((total + nTransactionFee) > getBalance())
 113     {
 114         return SendCoinsReturn(AmountWithFeeExceedsBalance, nTransactionFee);
 115     }
 116
 117     CRITICAL_BLOCK(cs_main)
 118     CRITICAL_BLOCK(wallet->cs_mapWallet)
 119     {
 120         // Sendmany
 121         std::vector<std::pair<CScript, int64> > vecSend;
 122         foreach(const SendCoinsRecipient &rcp, recipients)
 123         {
 124             CScript scriptPubKey;
 125             scriptPubKey.SetBitcoinAddress(rcp.address.toStdString());
 126             vecSend.push_back(make_pair(scriptPubKey, rcp.amount));
 127         }
 128
 129         CWalletTx wtx;
 130         CReserveKey keyChange(wallet);
 131         int64 nFeeRequired = 0;
 132         bool fCreated = wallet->CreateTransaction(vecSend, wtx, keyChange, nFeeRequired);
 133
 134         if(!fCreated)
 135         {
 136             if((total + nFeeRequired) > wallet->GetBalance())
 137             {
 138                 return SendCoinsReturn(AmountWithFeeExceedsBalance, nFeeRequired);
 139             }
 140             return TransactionCreationFailed;
 141         }
 142         if(!ThreadSafeAskFee(nFeeRequired, tr("Sending...").toStdString(), NULL))
 143         {
 144             return Aborted;
 145         }
 146         if(!wallet->CommitTransaction(wtx, keyChange))
 147         {
 148             return TransactionCommitFailed;
 149         }
 150         hex = QString::fromStdString(wtx.GetHash().GetHex());
 151     }
 152
 153     // Add addresses that we've sent to to the address book
 154     foreach(const SendCoinsRecipient &rcp, recipients)
 155     {
 156         std::string strAddress = rcp.address.toStdString();
 157         CRITICAL_BLOCK(wallet->cs_mapAddressBook)
 158         {
 159             if (!wallet->mapAddressBook.count(strAddress))
 160                 wallet->SetAddressBookName(strAddress, rcp.label.toStdString());
 161         }
 162     }
 163
 164     return SendCoinsReturn(OK, 0, hex);
 165 }
 166
 167 OptionsModel *WalletModel::getOptionsModel()
 168 {
 169     return optionsModel;
 170 }
 171
 172 AddressTableModel *WalletModel::getAddressTableModel()
 173 {
 174     return addressTableModel;
 175 }
 176
 177 TransactionTableModel *WalletModel::getTransactionTableModel()
 178 {
 179     return transactionTableModel;
 180 }
 181
 182