src/qt/addresstablemodel.cpp

   1 // Copyright (c) 2011-2016 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #include "addresstablemodel.h"
   6
   7 #include "guiutil.h"
   8 #include "walletmodel.h"
   9
  10 #include "base58.h"
  11 #include "wallet/wallet.h"
  12
  13
  14 #include <QFont>
  15 #include <QDebug>
  16
  17 const QString AddressTableModel::Send = "S";
  18 const QString AddressTableModel::Receive = "R";
  19
  20 struct AddressTableEntry
  21 {
  22     enum Type {
  23         Sending,
  24         Receiving,
  25         Hidden /* QSortFilterProxyModel will filter these out */
  26     };
  27
  28     Type type;
  29     QString label;
  30     QString address;
  31
  32     AddressTableEntry() {}
  33     AddressTableEntry(Type _type, const QString &_label, const QString &_address):
  34         type(_type), label(_label), address(_address) {}
  35 };
  36
  37 struct AddressTableEntryLessThan
  38 {
  39     bool operator()(const AddressTableEntry &a, const AddressTableEntry &b) const
  40     {
  41         return a.address < b.address;
  42     }
  43     bool operator()(const AddressTableEntry &a, const QString &b) const
  44     {
  45         return a.address < b;
  46     }
  47     bool operator()(const QString &a, const AddressTableEntry &b) const
  48     {
  49         return a < b.address;
  50     }
  51 };
  52
  53 /* Determine address type from address purpose */
  54 static AddressTableEntry::Type translateTransactionType(const QString &strPurpose, bool isMine)
  55 {
  56     AddressTableEntry::Type addressType = AddressTableEntry::Hidden;
  57     // "refund" addresses aren't shown, and change addresses aren't in mapAddressBook at all.
  58     if (strPurpose == "send")
  59         addressType = AddressTableEntry::Sending;
  60     else if (strPurpose == "receive")
  61         addressType = AddressTableEntry::Receiving;
  62     else if (strPurpose == "unknown" || strPurpose == "") // if purpose not set, guess
  63         addressType = (isMine ? AddressTableEntry::Receiving : AddressTableEntry::Sending);
  64     return addressType;
  65 }
  66
  67 // Private implementation
  68 class AddressTablePriv
  69 {
  70 public:
  71     CWallet *wallet;
  72     QList<AddressTableEntry> cachedAddressTable;
  73     AddressTableModel *parent;
  74
  75     AddressTablePriv(CWallet *_wallet, AddressTableModel *_parent):
  76         wallet(_wallet), parent(_parent) {}
  77
  78     void refreshAddressTable()
  79     {
  80         cachedAddressTable.clear();
  81         {
  82             LOCK(wallet->cs_wallet);
  83             for (const std::pair<CTxDestination, CAddressBookData>& item : wallet->mapAddressBook)
  84             {
  85                 const CTxDestination& address = item.first;
  86                 bool fMine = IsMine(*wallet, address);
  87                 AddressTableEntry::Type addressType = translateTransactionType(
  88                         QString::fromStdString(item.second.purpose), fMine);
  89                 const std::string& strName = item.second.name;
  90                 cachedAddressTable.append(AddressTableEntry(addressType,
  91                                   QString::fromStdString(strName),
  92                                   QString::fromStdString(EncodeDestination(address))));
  93             }
  94         }
  95         // qLowerBound() and qUpperBound() require our cachedAddressTable list to be sorted in asc order
  96         // Even though the map is already sorted this re-sorting step is needed because the originating map
  97         // is sorted by binary address, not by base58() address.
  98         qSort(cachedAddressTable.begin(), cachedAddressTable.end(), AddressTableEntryLessThan());
  99     }
 100
 101     void updateEntry(const QString &address, const QString &label, bool isMine, const QString &purpose, int status)
 102     {
 103         // Find address / label in model
 104         QList<AddressTableEntry>::iterator lower = qLowerBound(
 105             cachedAddressTable.begin(), cachedAddressTable.end(), address, AddressTableEntryLessThan());
 106         QList<AddressTableEntry>::iterator upper = qUpperBound(
 107             cachedAddressTable.begin(), cachedAddressTable.end(), address, AddressTableEntryLessThan());
 108         int lowerIndex = (lower - cachedAddressTable.begin());
 109         int upperIndex = (upper - cachedAddressTable.begin());
 110         bool inModel = (lower != upper);
 111         AddressTableEntry::Type newEntryType = translateTransactionType(purpose, isMine);
 112
 113         switch(status)
 114         {
 115         case CT_NEW:
 116             if(inModel)
 117             {
 118                 qWarning() << "AddressTablePriv::updateEntry: Warning: Got CT_NEW, but entry is already in model";
 119                 break;
 120             }
 121             parent->beginInsertRows(QModelIndex(), lowerIndex, lowerIndex);
 122             cachedAddressTable.insert(lowerIndex, AddressTableEntry(newEntryType, label, address));
 123             parent->endInsertRows();
 124             break;
 125         case CT_UPDATED:
 126             if(!inModel)
 127             {
 128                 qWarning() << "AddressTablePriv::updateEntry: Warning: Got CT_UPDATED, but entry is not in model";
 129                 break;
 130             }
 131             lower->type = newEntryType;
 132             lower->label = label;
 133             parent->emitDataChanged(lowerIndex);
 134             break;
 135         case CT_DELETED:
 136             if(!inModel)
 137             {
 138                 qWarning() << "AddressTablePriv::updateEntry: Warning: Got CT_DELETED, but entry is not in model";
 139                 break;
 140             }
 141             parent->beginRemoveRows(QModelIndex(), lowerIndex, upperIndex-1);
 142             cachedAddressTable.erase(lower, upper);
 143             parent->endRemoveRows();
 144             break;
 145         }
 146     }
 147
 148     int size()
 149     {
 150         return cachedAddressTable.size();
 151     }
 152
 153     AddressTableEntry *index(int idx)
 154     {
 155         if(idx >= 0 && idx < cachedAddressTable.size())
 156         {
 157             return &cachedAddressTable[idx];
 158         }
 159         else
 160         {
 161             return 0;
 162         }
 163     }
 164 };
 165
 166 AddressTableModel::AddressTableModel(CWallet *_wallet, WalletModel *parent) :
 167     QAbstractTableModel(parent),walletModel(parent),wallet(_wallet),priv(0)
 168 {
 169     columns << tr("Label") << tr("Address");
 170     priv = new AddressTablePriv(wallet, this);
 171     priv->refreshAddressTable();
 172 }
 173
 174 AddressTableModel::~AddressTableModel()
 175 {
 176     delete priv;
 177 }
 178
 179 int AddressTableModel::rowCount(const QModelIndex &parent) const
 180 {
 181     Q_UNUSED(parent);
 182     return priv->size();
 183 }
 184
 185 int AddressTableModel::columnCount(const QModelIndex &parent) const
 186 {
 187     Q_UNUSED(parent);
 188     return columns.length();
 189 }
 190
 191 QVariant AddressTableModel::data(const QModelIndex &index, int role) const
 192 {
 193     if(!index.isValid())
 194         return QVariant();
 195
 196     AddressTableEntry *rec = static_cast<AddressTableEntry*>(index.internalPointer());
 197
 198     if(role == Qt::DisplayRole || role == Qt::EditRole)
 199     {
 200         switch(index.column())
 201         {
 202         case Label:
 203             if(rec->label.isEmpty() && role == Qt::DisplayRole)
 204             {
 205                 return tr("(no label)");
 206             }
 207             else
 208             {
 209                 return rec->label;
 210             }
 211         case Address:
 212             return rec->address;
 213         }
 214     }
 215     else if (role == Qt::FontRole)
 216     {
 217         QFont font;
 218         if(index.column() == Address)
 219         {
 220             font = GUIUtil::fixedPitchFont();
 221         }
 222         return font;
 223     }
 224     else if (role == TypeRole)
 225     {
 226         switch(rec->type)
 227         {
 228         case AddressTableEntry::Sending:
 229             return Send;
 230         case AddressTableEntry::Receiving:
 231             return Receive;
 232         default: break;
 233         }
 234     }
 235     return QVariant();
 236 }
 237
 238 bool AddressTableModel::setData(const QModelIndex &index, const QVariant &value, int role)
 239 {
 240     if(!index.isValid())
 241         return false;
 242     AddressTableEntry *rec = static_cast<AddressTableEntry*>(index.internalPointer());
 243     std::string strPurpose = (rec->type == AddressTableEntry::Sending ? "send" : "receive");
 244     editStatus = OK;
 245
 246     if(role == Qt::EditRole)
 247     {
 248         LOCK(wallet->cs_wallet); /* For SetAddressBook / DelAddressBook */
 249         CTxDestination curAddress = DecodeDestination(rec->address.toStdString());
 250         if(index.column() == Label)
 251         {
 252             // Do nothing, if old label == new label
 253             if(rec->label == value.toString())
 254             {
 255                 editStatus = NO_CHANGES;
 256                 return false;
 257             }
 258             wallet->SetAddressBook(curAddress, value.toString().toStdString(), strPurpose);
 259         } else if(index.column() == Address) {
 260             CTxDestination newAddress = DecodeDestination(value.toString().toStdString());
 261             // Refuse to set invalid address, set error status and return false
 262             if(boost::get<CNoDestination>(&newAddress))
 263             {
 264                 editStatus = INVALID_ADDRESS;
 265                 return false;
 266             }
 267             // Do nothing, if old address == new address
 268             else if(newAddress == curAddress)
 269             {
 270                 editStatus = NO_CHANGES;
 271                 return false;
 272             }
 273             // Check for duplicate addresses to prevent accidental deletion of addresses, if you try
 274             // to paste an existing address over another address (with a different label)
 275             else if(wallet->mapAddressBook.count(newAddress))
 276             {
 277                 editStatus = DUPLICATE_ADDRESS;
 278                 return false;
 279             }
 280             // Double-check that we're not overwriting a receiving address
 281             else if(rec->type == AddressTableEntry::Sending)
 282             {
 283                 // Remove old entry
 284                 wallet->DelAddressBook(curAddress);
 285                 // Add new entry with new address
 286                 wallet->SetAddressBook(newAddress, rec->label.toStdString(), strPurpose);
 287             }
 288         }
 289         return true;
 290     }
 291     return false;
 292 }
 293
 294 QVariant AddressTableModel::headerData(int section, Qt::Orientation orientation, int role) const
 295 {
 296     if(orientation == Qt::Horizontal)
 297     {
 298         if(role == Qt::DisplayRole && section < columns.size())
 299         {
 300             return columns[section];
 301         }
 302     }
 303     return QVariant();
 304 }
 305
 306 Qt::ItemFlags AddressTableModel::flags(const QModelIndex &index) const
 307 {
 308     if(!index.isValid())
 309         return 0;
 310     AddressTableEntry *rec = static_cast<AddressTableEntry*>(index.internalPointer());
 311
 312     Qt::ItemFlags retval = Qt::ItemIsSelectable | Qt::ItemIsEnabled;
 313     // Can edit address and label for sending addresses,
 314     // and only label for receiving addresses.
 315     if(rec->type == AddressTableEntry::Sending ||
 316       (rec->type == AddressTableEntry::Receiving && index.column()==Label))
 317     {
 318         retval |= Qt::ItemIsEditable;
 319     }
 320     return retval;
 321 }
 322
 323 QModelIndex AddressTableModel::index(int row, int column, const QModelIndex &parent) const
 324 {
 325     Q_UNUSED(parent);
 326     AddressTableEntry *data = priv->index(row);
 327     if(data)
 328     {
 329         return createIndex(row, column, priv->index(row));
 330     }
 331     else
 332     {
 333         return QModelIndex();
 334     }
 335 }
 336
 337 void AddressTableModel::updateEntry(const QString &address,
 338         const QString &label, bool isMine, const QString &purpose, int status)
 339 {
 340     // Update address book model from Bitcoin core
 341     priv->updateEntry(address, label, isMine, purpose, status);
 342 }
 343
 344 QString AddressTableModel::addRow(const QString &type, const QString &label, const QString &address)
 345 {
 346     std::string strLabel = label.toStdString();
 347     std::string strAddress = address.toStdString();
 348
 349     editStatus = OK;
 350
 351     if(type == Send)
 352     {
 353         if(!walletModel->validateAddress(address))
 354         {
 355             editStatus = INVALID_ADDRESS;
 356             return QString();
 357         }
 358         // Check for duplicate addresses
 359         {
 360             LOCK(wallet->cs_wallet);
 361             if(wallet->mapAddressBook.count(DecodeDestination(strAddress)))
 362             {
 363                 editStatus = DUPLICATE_ADDRESS;
 364                 return QString();
 365             }
 366         }
 367     }
 368     else if(type == Receive)
 369     {
 370         // Generate a new address to associate with given label
 371         CPubKey newKey;
 372         if(!wallet->GetKeyFromPool(newKey))
 373         {
 374             WalletModel::UnlockContext ctx(walletModel->requestUnlock());
 375             if(!ctx.isValid())
 376             {
 377                 // Unlock wallet failed or was cancelled
 378                 editStatus = WALLET_UNLOCK_FAILURE;
 379                 return QString();
 380             }
 381             if(!wallet->GetKeyFromPool(newKey))
 382             {
 383                 editStatus = KEY_GENERATION_FAILURE;
 384                 return QString();
 385             }
 386         }
 387         strAddress = EncodeDestination(newKey.GetID());
 388     }
 389     else
 390     {
 391         return QString();
 392     }
 393
 394     // Add entry
 395     {
 396         LOCK(wallet->cs_wallet);
 397         wallet->SetAddressBook(DecodeDestination(strAddress), strLabel,
 398                                (type == Send ? "send" : "receive"));
 399     }
 400     return QString::fromStdString(strAddress);
 401 }
 402
 403 bool AddressTableModel::removeRows(int row, int count, const QModelIndex &parent)
 404 {
 405     Q_UNUSED(parent);
 406     AddressTableEntry *rec = priv->index(row);
 407     if(count != 1 || !rec || rec->type == AddressTableEntry::Receiving)
 408     {
 409         // Can only remove one row at a time, and cannot remove rows not in model.
 410         // Also refuse to remove receiving addresses.
 411         return false;
 412     }
 413     {
 414         LOCK(wallet->cs_wallet);
 415         wallet->DelAddressBook(DecodeDestination(rec->address.toStdString()));
 416     }
 417     return true;
 418 }
 419
 420 /* Look up label for address in address book, if not found return empty string.
 421  */
 422 QString AddressTableModel::labelForAddress(const QString &address) const
 423 {
 424     {
 425         LOCK(wallet->cs_wallet);
 426         CTxDestination destination = DecodeDestination(address.toStdString());
 427         std::map<CTxDestination, CAddressBookData>::iterator mi = wallet->mapAddressBook.find(destination);
 428         if (mi != wallet->mapAddressBook.end())
 429         {
 430             return QString::fromStdString(mi->second.name);
 431         }
 432     }
 433     return QString();
 434 }
 435
 436 int AddressTableModel::lookupAddress(const QString &address) const
 437 {
 438     QModelIndexList lst = match(index(0, Address, QModelIndex()),
 439                                 Qt::EditRole, address, 1, Qt::MatchExactly);
 440     if(lst.isEmpty())
 441     {
 442         return -1;
 443     }
 444     else
 445     {
 446         return lst.at(0).row();
 447     }
 448 }
 449
 450 void AddressTableModel::emitDataChanged(int idx)
 451 {
 452     Q_EMIT dataChanged(index(idx, 0, QModelIndex()), index(idx, columns.length()-1, QModelIndex()));
 453 }