Merge pull request #521 from laanwj/qt

Qt GUI

1 files changed, 277 insertions, 0 deletions

diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
new file mode 100644
index 0000000000..2f989661f0
--- /dev/null
+++ b/src/qt/walletmodel.cpp
@@ -0,0 +1,277 @@
+#include "walletmodel.h"
+#include "guiconstants.h"
+#include "optionsmodel.h"
+#include "addresstablemodel.h"
+#include "transactiontablemodel.h"
+
+#include "headers.h"
+
+#include <QTimer>
+#include <QSet>
+
+WalletModel::WalletModel(CWallet *wallet, OptionsModel *optionsModel, QObject *parent) :
+    QObject(parent), wallet(wallet), optionsModel(optionsModel), addressTableModel(0),
+    transactionTableModel(0),
+    cachedBalance(0), cachedUnconfirmedBalance(0), cachedNumTransactions(0),
+    cachedEncryptionStatus(Unencrypted)
+{
+    // Until signal notifications is built into the bitcoin core,
+    //  simply update everything after polling using a timer.
+    QTimer *timer = new QTimer(this);
+    connect(timer, SIGNAL(timeout()), this, SLOT(update()));
+    timer->start(MODEL_UPDATE_DELAY);
+
+    addressTableModel = new AddressTableModel(wallet, this);
+    transactionTableModel = new TransactionTableModel(wallet, this);
+}
+
+qint64 WalletModel::getBalance() const
+{
+    return wallet->GetBalance();
+}
+
+qint64 WalletModel::getUnconfirmedBalance() const
+{
+    return wallet->GetUnconfirmedBalance();
+}
+
+int WalletModel::getNumTransactions() const
+{
+    int numTransactions = 0;
+    CRITICAL_BLOCK(wallet->cs_wallet)
+    {
+        numTransactions = wallet->mapWallet.size();
+    }
+    return numTransactions;
+}
+
+void WalletModel::update()
+{
+    qint64 newBalance = getBalance();
+    qint64 newUnconfirmedBalance = getUnconfirmedBalance();
+    int newNumTransactions = getNumTransactions();
+    EncryptionStatus newEncryptionStatus = getEncryptionStatus();
+
+    if(cachedBalance != newBalance || cachedUnconfirmedBalance != newUnconfirmedBalance)
+        emit balanceChanged(newBalance, newUnconfirmedBalance);
+
+    if(cachedNumTransactions != newNumTransactions)
+        emit numTransactionsChanged(newNumTransactions);
+
+    if(cachedEncryptionStatus != newEncryptionStatus)
+        emit encryptionStatusChanged(newEncryptionStatus);
+
+    cachedBalance = newBalance;
+    cachedUnconfirmedBalance = newUnconfirmedBalance;
+    cachedNumTransactions = newNumTransactions;
+
+    addressTableModel->update();
+}
+
+bool WalletModel::validateAddress(const QString &address)
+{
+    CBitcoinAddress addressParsed(address.toStdString());
+    return addressParsed.IsValid();
+}
+
+WalletModel::SendCoinsReturn WalletModel::sendCoins(const QList<SendCoinsRecipient> &recipients)
+{
+    qint64 total = 0;
+    QSet<QString> setAddress;
+    QString hex;
+
+    if(recipients.empty())
+    {
+        return OK;
+    }
+
+    // Pre-check input data for validity
+    foreach(const SendCoinsRecipient &rcp, recipients)
+    {
+        if(!validateAddress(rcp.address))
+        {
+            return InvalidAddress;
+        }
+        setAddress.insert(rcp.address);
+
+        if(rcp.amount <= 0)
+        {
+            return InvalidAmount;
+        }
+        total += rcp.amount;
+    }
+
+    if(recipients.size() > setAddress.size())
+    {
+        return DuplicateAddress;
+    }
+
+    if(total > getBalance())
+    {
+        return AmountExceedsBalance;
+    }
+
+    if((total + nTransactionFee) > getBalance())
+    {
+        return SendCoinsReturn(AmountWithFeeExceedsBalance, nTransactionFee);
+    }
+
+    CRITICAL_BLOCK(cs_main)
+    CRITICAL_BLOCK(wallet->cs_wallet)
+    {
+        // Sendmany
+        std::vector<std::pair<CScript, int64> > vecSend;
+        foreach(const SendCoinsRecipient &rcp, recipients)
+        {
+            CScript scriptPubKey;
+            scriptPubKey.SetBitcoinAddress(rcp.address.toStdString());
+            vecSend.push_back(make_pair(scriptPubKey, rcp.amount));
+        }
+
+        CWalletTx wtx;
+        CReserveKey keyChange(wallet);
+        int64 nFeeRequired = 0;
+        bool fCreated = wallet->CreateTransaction(vecSend, wtx, keyChange, nFeeRequired);
+
+        if(!fCreated)
+        {
+            if((total + nFeeRequired) > wallet->GetBalance())
+            {
+                return SendCoinsReturn(AmountWithFeeExceedsBalance, nFeeRequired);
+            }
+            return TransactionCreationFailed;
+        }
+        if(!ThreadSafeAskFee(nFeeRequired, tr("Sending...").toStdString(), NULL))
+        {
+            return Aborted;
+        }
+        if(!wallet->CommitTransaction(wtx, keyChange))
+        {
+            return TransactionCommitFailed;
+        }
+        hex = QString::fromStdString(wtx.GetHash().GetHex());
+    }
+
+    // Add addresses that we've sent to to the address book
+    foreach(const SendCoinsRecipient &rcp, recipients)
+    {
+        std::string strAddress = rcp.address.toStdString();
+        CRITICAL_BLOCK(wallet->cs_wallet)
+        {
+            if (!wallet->mapAddressBook.count(strAddress))
+                wallet->SetAddressBookName(strAddress, rcp.label.toStdString());
+        }
+    }
+
+    // Update our model of the address table
+    addressTableModel->updateList();
+
+    return SendCoinsReturn(OK, 0, hex);
+}
+
+OptionsModel *WalletModel::getOptionsModel()
+{
+    return optionsModel;
+}
+
+AddressTableModel *WalletModel::getAddressTableModel()
+{
+    return addressTableModel;
+}
+
+TransactionTableModel *WalletModel::getTransactionTableModel()
+{
+    return transactionTableModel;
+}
+
+WalletModel::EncryptionStatus WalletModel::getEncryptionStatus() const
+{
+    if(!wallet->IsCrypted())
+    {
+        return Unencrypted;
+    }
+    else if(wallet->IsLocked())
+    {
+        return Locked;
+    }
+    else
+    {
+        return Unlocked;
+    }
+}
+
+bool WalletModel::setWalletEncrypted(bool encrypted, const std::string &passphrase)
+{
+    if(encrypted)
+    {
+        // Encrypt
+        return wallet->EncryptWallet(passphrase);
+    }
+    else
+    {
+        // Decrypt -- TODO; not supported yet
+        return false;
+    }
+}
+
+bool WalletModel::setWalletLocked(bool locked, const std::string &passPhrase)
+{
+    if(locked)
+    {
+        // Lock
+        return wallet->Lock();
+    }
+    else
+    {
+        // Unlock
+        return wallet->Unlock(passPhrase);
+    }
+}
+
+bool WalletModel::changePassphrase(const std::string &oldPass, const std::string &newPass)
+{
+    bool retval;
+    CRITICAL_BLOCK(wallet->cs_wallet)
+    {
+        wallet->Lock(); // Make sure wallet is locked before attempting pass change
+        retval = wallet->ChangeWalletPassphrase(oldPass, newPass);
+    }
+    return retval;
+}
+
+// WalletModel::UnlockContext implementation
+WalletModel::UnlockContext WalletModel::requestUnlock()
+{
+    bool was_locked = getEncryptionStatus() == Locked;
+    if(was_locked)
+    {
+        // Request UI to unlock wallet
+        emit requireUnlock();
+    }
+    // If wallet is still locked, unlock was failed or cancelled, mark context as invalid
+    bool valid = getEncryptionStatus() != Locked;
+
+    return UnlockContext(this, valid, was_locked);
+}
+
+WalletModel::UnlockContext::UnlockContext(WalletModel *wallet, bool valid, bool relock):
+        wallet(wallet),
+        valid(valid),
+        relock(relock)
+{
+}
+
+WalletModel::UnlockContext::~UnlockContext()
+{
+    if(valid && relock)
+    {
+        wallet->setWalletLocked(true);
+    }
+}
+
+void WalletModel::UnlockContext::CopyFrom(const UnlockContext& rhs)
+{
+    // Transfer context; old object no longer relocks wallet
+    *this = rhs;
+    rhs.relock = false;
+}