src/qt/coincontroldialog.cpp

   1 // Copyright (c) 2011-2017 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 <qt/coincontroldialog.h>
   6 #include <qt/forms/ui_coincontroldialog.h>
   7
   8 #include <qt/addresstablemodel.h>
   9 #include <qt/bitcoinunits.h>
  10 #include <qt/guiutil.h>
  11 #include <qt/optionsmodel.h>
  12 #include <qt/platformstyle.h>
  13 #include <txmempool.h>
  14 #include <qt/walletmodel.h>
  15
  16 #include <wallet/coincontrol.h>
  17 #include <init.h>
  18 #include <policy/fees.h>
  19 #include <policy/policy.h>
  20 #include <validation.h> // For mempool
  21 #include <wallet/fees.h>
  22 #include <wallet/wallet.h>
  23
  24 #include <QApplication>
  25 #include <QCheckBox>
  26 #include <QCursor>
  27 #include <QDialogButtonBox>
  28 #include <QFlags>
  29 #include <QIcon>
  30 #include <QSettings>
  31 #include <QTreeWidget>
  32
  33 QList<CAmount> CoinControlDialog::payAmounts;
  34 CCoinControl* CoinControlDialog::coinControl = new CCoinControl();
  35 bool CoinControlDialog::fSubtractFeeFromAmount = false;
  36
  37 bool CCoinControlWidgetItem::operator<(const QTreeWidgetItem &other) const {
  38     int column = treeWidget()->sortColumn();
  39     if (column == CoinControlDialog::COLUMN_AMOUNT || column == CoinControlDialog::COLUMN_DATE || column == CoinControlDialog::COLUMN_CONFIRMATIONS)
  40         return data(column, Qt::UserRole).toLongLong() < other.data(column, Qt::UserRole).toLongLong();
  41     return QTreeWidgetItem::operator<(other);
  42 }
  43
  44 CoinControlDialog::CoinControlDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
  45     QDialog(parent),
  46     ui(new Ui::CoinControlDialog),
  47     model(0),
  48     platformStyle(_platformStyle)
  49 {
  50     ui->setupUi(this);
  51
  52     // context menu actions
  53     QAction *copyAddressAction = new QAction(tr("Copy address"), this);
  54     QAction *copyLabelAction = new QAction(tr("Copy label"), this);
  55     QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
  56              copyTransactionHashAction = new QAction(tr("Copy transaction ID"), this);  // we need to enable/disable this
  57              lockAction = new QAction(tr("Lock unspent"), this);                        // we need to enable/disable this
  58              unlockAction = new QAction(tr("Unlock unspent"), this);                    // we need to enable/disable this
  59
  60     // context menu
  61     contextMenu = new QMenu(this);
  62     contextMenu->addAction(copyAddressAction);
  63     contextMenu->addAction(copyLabelAction);
  64     contextMenu->addAction(copyAmountAction);
  65     contextMenu->addAction(copyTransactionHashAction);
  66     contextMenu->addSeparator();
  67     contextMenu->addAction(lockAction);
  68     contextMenu->addAction(unlockAction);
  69
  70     // context menu signals
  71     connect(ui->treeWidget, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showMenu(QPoint)));
  72     connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
  73     connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
  74     connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
  75     connect(copyTransactionHashAction, SIGNAL(triggered()), this, SLOT(copyTransactionHash()));
  76     connect(lockAction, SIGNAL(triggered()), this, SLOT(lockCoin()));
  77     connect(unlockAction, SIGNAL(triggered()), this, SLOT(unlockCoin()));
  78
  79     // clipboard actions
  80     QAction *clipboardQuantityAction = new QAction(tr("Copy quantity"), this);
  81     QAction *clipboardAmountAction = new QAction(tr("Copy amount"), this);
  82     QAction *clipboardFeeAction = new QAction(tr("Copy fee"), this);
  83     QAction *clipboardAfterFeeAction = new QAction(tr("Copy after fee"), this);
  84     QAction *clipboardBytesAction = new QAction(tr("Copy bytes"), this);
  85     QAction *clipboardLowOutputAction = new QAction(tr("Copy dust"), this);
  86     QAction *clipboardChangeAction = new QAction(tr("Copy change"), this);
  87
  88     connect(clipboardQuantityAction, SIGNAL(triggered()), this, SLOT(clipboardQuantity()));
  89     connect(clipboardAmountAction, SIGNAL(triggered()), this, SLOT(clipboardAmount()));
  90     connect(clipboardFeeAction, SIGNAL(triggered()), this, SLOT(clipboardFee()));
  91     connect(clipboardAfterFeeAction, SIGNAL(triggered()), this, SLOT(clipboardAfterFee()));
  92     connect(clipboardBytesAction, SIGNAL(triggered()), this, SLOT(clipboardBytes()));
  93     connect(clipboardLowOutputAction, SIGNAL(triggered()), this, SLOT(clipboardLowOutput()));
  94     connect(clipboardChangeAction, SIGNAL(triggered()), this, SLOT(clipboardChange()));
  95
  96     ui->labelCoinControlQuantity->addAction(clipboardQuantityAction);
  97     ui->labelCoinControlAmount->addAction(clipboardAmountAction);
  98     ui->labelCoinControlFee->addAction(clipboardFeeAction);
  99     ui->labelCoinControlAfterFee->addAction(clipboardAfterFeeAction);
 100     ui->labelCoinControlBytes->addAction(clipboardBytesAction);
 101     ui->labelCoinControlLowOutput->addAction(clipboardLowOutputAction);
 102     ui->labelCoinControlChange->addAction(clipboardChangeAction);
 103
 104     // toggle tree/list mode
 105     connect(ui->radioTreeMode, SIGNAL(toggled(bool)), this, SLOT(radioTreeMode(bool)));
 106     connect(ui->radioListMode, SIGNAL(toggled(bool)), this, SLOT(radioListMode(bool)));
 107
 108     // click on checkbox
 109     connect(ui->treeWidget, SIGNAL(itemChanged(QTreeWidgetItem*, int)), this, SLOT(viewItemChanged(QTreeWidgetItem*, int)));
 110
 111     // click on header
 112 #if QT_VERSION < 0x050000
 113     ui->treeWidget->header()->setClickable(true);
 114 #else
 115     ui->treeWidget->header()->setSectionsClickable(true);
 116 #endif
 117     connect(ui->treeWidget->header(), SIGNAL(sectionClicked(int)), this, SLOT(headerSectionClicked(int)));
 118
 119     // ok button
 120     connect(ui->buttonBox, SIGNAL(clicked( QAbstractButton*)), this, SLOT(buttonBoxClicked(QAbstractButton*)));
 121
 122     // (un)select all
 123     connect(ui->pushButtonSelectAll, SIGNAL(clicked()), this, SLOT(buttonSelectAllClicked()));
 124
 125     // change coin control first column label due Qt4 bug.
 126     // see https://github.com/bitcoin/bitcoin/issues/5716
 127     ui->treeWidget->headerItem()->setText(COLUMN_CHECKBOX, QString());
 128
 129     ui->treeWidget->setColumnWidth(COLUMN_CHECKBOX, 84);
 130     ui->treeWidget->setColumnWidth(COLUMN_AMOUNT, 110);
 131     ui->treeWidget->setColumnWidth(COLUMN_LABEL, 190);
 132     ui->treeWidget->setColumnWidth(COLUMN_ADDRESS, 320);
 133     ui->treeWidget->setColumnWidth(COLUMN_DATE, 130);
 134     ui->treeWidget->setColumnWidth(COLUMN_CONFIRMATIONS, 110);
 135     ui->treeWidget->setColumnHidden(COLUMN_TXHASH, true);         // store transaction hash in this column, but don't show it
 136     ui->treeWidget->setColumnHidden(COLUMN_VOUT_INDEX, true);     // store vout index in this column, but don't show it
 137
 138     // default view is sorted by amount desc
 139     sortView(COLUMN_AMOUNT, Qt::DescendingOrder);
 140
 141     // restore list mode and sortorder as a convenience feature
 142     QSettings settings;
 143     if (settings.contains("nCoinControlMode") && !settings.value("nCoinControlMode").toBool())
 144         ui->radioTreeMode->click();
 145     if (settings.contains("nCoinControlSortColumn") && settings.contains("nCoinControlSortOrder"))
 146         sortView(settings.value("nCoinControlSortColumn").toInt(), ((Qt::SortOrder)settings.value("nCoinControlSortOrder").toInt()));
 147 }
 148
 149 CoinControlDialog::~CoinControlDialog()
 150 {
 151     QSettings settings;
 152     settings.setValue("nCoinControlMode", ui->radioListMode->isChecked());
 153     settings.setValue("nCoinControlSortColumn", sortColumn);
 154     settings.setValue("nCoinControlSortOrder", (int)sortOrder);
 155
 156     delete ui;
 157 }
 158
 159 void CoinControlDialog::setModel(WalletModel *_model)
 160 {
 161     this->model = _model;
 162
 163     if(_model && _model->getOptionsModel() && _model->getAddressTableModel())
 164     {
 165         updateView();
 166         updateLabelLocked();
 167         CoinControlDialog::updateLabels(_model, this);
 168     }
 169 }
 170
 171 // ok button
 172 void CoinControlDialog::buttonBoxClicked(QAbstractButton* button)
 173 {
 174     if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::AcceptRole)
 175         done(QDialog::Accepted); // closes the dialog
 176 }
 177
 178 // (un)select all
 179 void CoinControlDialog::buttonSelectAllClicked()
 180 {
 181     Qt::CheckState state = Qt::Checked;
 182     for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
 183     {
 184         if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != Qt::Unchecked)
 185         {
 186             state = Qt::Unchecked;
 187             break;
 188         }
 189     }
 190     ui->treeWidget->setEnabled(false);
 191     for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
 192             if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != state)
 193                 ui->treeWidget->topLevelItem(i)->setCheckState(COLUMN_CHECKBOX, state);
 194     ui->treeWidget->setEnabled(true);
 195     if (state == Qt::Unchecked)
 196         coinControl->UnSelectAll(); // just to be sure
 197     CoinControlDialog::updateLabels(model, this);
 198 }
 199
 200 // context menu
 201 void CoinControlDialog::showMenu(const QPoint &point)
 202 {
 203     QTreeWidgetItem *item = ui->treeWidget->itemAt(point);
 204     if(item)
 205     {
 206         contextMenuItem = item;
 207
 208         // disable some items (like Copy Transaction ID, lock, unlock) for tree roots in context menu
 209         if (item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
 210         {
 211             copyTransactionHashAction->setEnabled(true);
 212             if (model->isLockedCoin(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt()))
 213             {
 214                 lockAction->setEnabled(false);
 215                 unlockAction->setEnabled(true);
 216             }
 217             else
 218             {
 219                 lockAction->setEnabled(true);
 220                 unlockAction->setEnabled(false);
 221             }
 222         }
 223         else // this means click on parent node in tree mode -> disable all
 224         {
 225             copyTransactionHashAction->setEnabled(false);
 226             lockAction->setEnabled(false);
 227             unlockAction->setEnabled(false);
 228         }
 229
 230         // show context menu
 231         contextMenu->exec(QCursor::pos());
 232     }
 233 }
 234
 235 // context menu action: copy amount
 236 void CoinControlDialog::copyAmount()
 237 {
 238     GUIUtil::setClipboard(BitcoinUnits::removeSpaces(contextMenuItem->text(COLUMN_AMOUNT)));
 239 }
 240
 241 // context menu action: copy label
 242 void CoinControlDialog::copyLabel()
 243 {
 244     if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_LABEL).length() == 0 && contextMenuItem->parent())
 245         GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_LABEL));
 246     else
 247         GUIUtil::setClipboard(contextMenuItem->text(COLUMN_LABEL));
 248 }
 249
 250 // context menu action: copy address
 251 void CoinControlDialog::copyAddress()
 252 {
 253     if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_ADDRESS).length() == 0 && contextMenuItem->parent())
 254         GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_ADDRESS));
 255     else
 256         GUIUtil::setClipboard(contextMenuItem->text(COLUMN_ADDRESS));
 257 }
 258
 259 // context menu action: copy transaction id
 260 void CoinControlDialog::copyTransactionHash()
 261 {
 262     GUIUtil::setClipboard(contextMenuItem->text(COLUMN_TXHASH));
 263 }
 264
 265 // context menu action: lock coin
 266 void CoinControlDialog::lockCoin()
 267 {
 268     if (contextMenuItem->checkState(COLUMN_CHECKBOX) == Qt::Checked)
 269         contextMenuItem->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 270
 271     COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
 272     model->lockCoin(outpt);
 273     contextMenuItem->setDisabled(true);
 274     contextMenuItem->setIcon(COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
 275     updateLabelLocked();
 276 }
 277
 278 // context menu action: unlock coin
 279 void CoinControlDialog::unlockCoin()
 280 {
 281     COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
 282     model->unlockCoin(outpt);
 283     contextMenuItem->setDisabled(false);
 284     contextMenuItem->setIcon(COLUMN_CHECKBOX, QIcon());
 285     updateLabelLocked();
 286 }
 287
 288 // copy label "Quantity" to clipboard
 289 void CoinControlDialog::clipboardQuantity()
 290 {
 291     GUIUtil::setClipboard(ui->labelCoinControlQuantity->text());
 292 }
 293
 294 // copy label "Amount" to clipboard
 295 void CoinControlDialog::clipboardAmount()
 296 {
 297     GUIUtil::setClipboard(ui->labelCoinControlAmount->text().left(ui->labelCoinControlAmount->text().indexOf(" ")));
 298 }
 299
 300 // copy label "Fee" to clipboard
 301 void CoinControlDialog::clipboardFee()
 302 {
 303     GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 304 }
 305
 306 // copy label "After fee" to clipboard
 307 void CoinControlDialog::clipboardAfterFee()
 308 {
 309     GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 310 }
 311
 312 // copy label "Bytes" to clipboard
 313 void CoinControlDialog::clipboardBytes()
 314 {
 315     GUIUtil::setClipboard(ui->labelCoinControlBytes->text().replace(ASYMP_UTF8, ""));
 316 }
 317
 318 // copy label "Dust" to clipboard
 319 void CoinControlDialog::clipboardLowOutput()
 320 {
 321     GUIUtil::setClipboard(ui->labelCoinControlLowOutput->text());
 322 }
 323
 324 // copy label "Change" to clipboard
 325 void CoinControlDialog::clipboardChange()
 326 {
 327     GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 328 }
 329
 330 // treeview: sort
 331 void CoinControlDialog::sortView(int column, Qt::SortOrder order)
 332 {
 333     sortColumn = column;
 334     sortOrder = order;
 335     ui->treeWidget->sortItems(column, order);
 336     ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
 337 }
 338
 339 // treeview: clicked on header
 340 void CoinControlDialog::headerSectionClicked(int logicalIndex)
 341 {
 342     if (logicalIndex == COLUMN_CHECKBOX) // click on most left column -> do nothing
 343     {
 344         ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
 345     }
 346     else
 347     {
 348         if (sortColumn == logicalIndex)
 349             sortOrder = ((sortOrder == Qt::AscendingOrder) ? Qt::DescendingOrder : Qt::AscendingOrder);
 350         else
 351         {
 352             sortColumn = logicalIndex;
 353             sortOrder = ((sortColumn == COLUMN_LABEL || sortColumn == COLUMN_ADDRESS) ? Qt::AscendingOrder : Qt::DescendingOrder); // if label or address then default => asc, else default => desc
 354         }
 355
 356         sortView(sortColumn, sortOrder);
 357     }
 358 }
 359
 360 // toggle tree mode
 361 void CoinControlDialog::radioTreeMode(bool checked)
 362 {
 363     if (checked && model)
 364         updateView();
 365 }
 366
 367 // toggle list mode
 368 void CoinControlDialog::radioListMode(bool checked)
 369 {
 370     if (checked && model)
 371         updateView();
 372 }
 373
 374 // checkbox clicked by user
 375 void CoinControlDialog::viewItemChanged(QTreeWidgetItem* item, int column)
 376 {
 377     if (column == COLUMN_CHECKBOX && item->text(COLUMN_TXHASH).length() == 64) // transaction hash is 64 characters (this means its a child node, so its not a parent node in tree mode)
 378     {
 379         COutPoint outpt(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());
 380
 381         if (item->checkState(COLUMN_CHECKBOX) == Qt::Unchecked)
 382             coinControl->UnSelect(outpt);
 383         else if (item->isDisabled()) // locked (this happens if "check all" through parent node)
 384             item->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 385         else
 386             coinControl->Select(outpt);
 387
 388         // selection changed -> update labels
 389         if (ui->treeWidget->isEnabled()) // do not update on every click for (un)select all
 390             CoinControlDialog::updateLabels(model, this);
 391     }
 392
 393     // TODO: Remove this temporary qt5 fix after Qt5.3 and Qt5.4 are no longer used.
 394     //       Fixed in Qt5.5 and above: https://bugreports.qt.io/browse/QTBUG-43473
 395 #if QT_VERSION >= 0x050000
 396     else if (column == COLUMN_CHECKBOX && item->childCount() > 0)
 397     {
 398         if (item->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked && item->child(0)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
 399             item->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
 400     }
 401 #endif
 402 }
 403
 404 // shows count of locked unspent outputs
 405 void CoinControlDialog::updateLabelLocked()
 406 {
 407     std::vector<COutPoint> vOutpts;
 408     model->listLockedCoins(vOutpts);
 409     if (vOutpts.size() > 0)
 410     {
 411        ui->labelLocked->setText(tr("(%1 locked)").arg(vOutpts.size()));
 412        ui->labelLocked->setVisible(true);
 413     }
 414     else ui->labelLocked->setVisible(false);
 415 }
 416
 417 void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
 418 {
 419     if (!model)
 420         return;
 421
 422     // nPayAmount
 423     CAmount nPayAmount = 0;
 424     bool fDust = false;
 425     CMutableTransaction txDummy;
 426     for (const CAmount &amount : CoinControlDialog::payAmounts)
 427     {
 428         nPayAmount += amount;
 429
 430         if (amount > 0)
 431         {
 432             CTxOut txout(amount, (CScript)std::vector<unsigned char>(24, 0));
 433             txDummy.vout.push_back(txout);
 434             fDust |= IsDust(txout, ::dustRelayFee);
 435         }
 436     }
 437
 438     CAmount nAmount             = 0;
 439     CAmount nPayFee             = 0;
 440     CAmount nAfterFee           = 0;
 441     CAmount nChange             = 0;
 442     unsigned int nBytes         = 0;
 443     unsigned int nBytesInputs   = 0;
 444     unsigned int nQuantity      = 0;
 445     bool fWitness               = false;
 446
 447     std::vector<COutPoint> vCoinControl;
 448     std::vector<COutput>   vOutputs;
 449     coinControl->ListSelected(vCoinControl);
 450     model->getOutputs(vCoinControl, vOutputs);
 451
 452     for (const COutput& out : vOutputs) {
 453         // unselect already spent, very unlikely scenario, this could happen
 454         // when selected are spent elsewhere, like rpc or another computer
 455         uint256 txhash = out.tx->GetHash();
 456         COutPoint outpt(txhash, out.i);
 457         if (model->isSpent(outpt))
 458         {
 459             coinControl->UnSelect(outpt);
 460             continue;
 461         }
 462
 463         // Quantity
 464         nQuantity++;
 465
 466         // Amount
 467         nAmount += out.tx->tx->vout[out.i].nValue;
 468
 469         // Bytes
 470         CTxDestination address;
 471         int witnessversion = 0;
 472         std::vector<unsigned char> witnessprogram;
 473         if (out.tx->tx->vout[out.i].scriptPubKey.IsWitnessProgram(witnessversion, witnessprogram))
 474         {
 475             nBytesInputs += (32 + 4 + 1 + (107 / WITNESS_SCALE_FACTOR) + 4);
 476             fWitness = true;
 477         }
 478         else if(ExtractDestination(out.tx->tx->vout[out.i].scriptPubKey, address))
 479         {
 480             CPubKey pubkey;
 481             CKeyID *keyid = boost::get<CKeyID>(&address);
 482             if (keyid && model->getPubKey(*keyid, pubkey))
 483             {
 484                 nBytesInputs += (pubkey.IsCompressed() ? 148 : 180);
 485             }
 486             else
 487                 nBytesInputs += 148; // in all error cases, simply assume 148 here
 488         }
 489         else nBytesInputs += 148;
 490     }
 491
 492     // calculation
 493     if (nQuantity > 0)
 494     {
 495         // Bytes
 496         nBytes = nBytesInputs + ((CoinControlDialog::payAmounts.size() > 0 ? CoinControlDialog::payAmounts.size() + 1 : 2) * 34) + 10; // always assume +1 output for change here
 497         if (fWitness)
 498         {
 499             // there is some fudging in these numbers related to the actual virtual transaction size calculation that will keep this estimate from being exact.
 500             // usually, the result will be an overestimate within a couple of satoshis so that the confirmation dialog ends up displaying a slightly smaller fee.
 501             // also, the witness stack size value is a variable sized integer. usually, the number of stack items will be well under the single byte var int limit.
 502             nBytes += 2; // account for the serialized marker and flag bytes
 503             nBytes += nQuantity; // account for the witness byte that holds the number of stack items for each input.
 504         }
 505
 506         // in the subtract fee from amount case, we can tell if zero change already and subtract the bytes, so that fee calculation afterwards is accurate
 507         if (CoinControlDialog::fSubtractFeeFromAmount)
 508             if (nAmount - nPayAmount == 0)
 509                 nBytes -= 34;
 510
 511         // Fee
 512         nPayFee = GetMinimumFee(nBytes, *coinControl, ::mempool, ::feeEstimator, nullptr /* FeeCalculation */);
 513
 514         if (nPayAmount > 0)
 515         {
 516             nChange = nAmount - nPayAmount;
 517             if (!CoinControlDialog::fSubtractFeeFromAmount)
 518                 nChange -= nPayFee;
 519
 520             // Never create dust outputs; if we would, just add the dust to the fee.
 521             if (nChange > 0 && nChange < MIN_CHANGE)
 522             {
 523                 CTxOut txout(nChange, (CScript)std::vector<unsigned char>(24, 0));
 524                 if (IsDust(txout, ::dustRelayFee))
 525                 {
 526                     nPayFee += nChange;
 527                     nChange = 0;
 528                     if (CoinControlDialog::fSubtractFeeFromAmount)
 529                         nBytes -= 34; // we didn't detect lack of change above
 530                 }
 531             }
 532
 533             if (nChange == 0 && !CoinControlDialog::fSubtractFeeFromAmount)
 534                 nBytes -= 34;
 535         }
 536
 537         // after fee
 538         nAfterFee = std::max<CAmount>(nAmount - nPayFee, 0);
 539     }
 540
 541     // actually update labels
 542     int nDisplayUnit = BitcoinUnits::BTC;
 543     if (model && model->getOptionsModel())
 544         nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
 545
 546     QLabel *l1 = dialog->findChild<QLabel *>("labelCoinControlQuantity");
 547     QLabel *l2 = dialog->findChild<QLabel *>("labelCoinControlAmount");
 548     QLabel *l3 = dialog->findChild<QLabel *>("labelCoinControlFee");
 549     QLabel *l4 = dialog->findChild<QLabel *>("labelCoinControlAfterFee");
 550     QLabel *l5 = dialog->findChild<QLabel *>("labelCoinControlBytes");
 551     QLabel *l7 = dialog->findChild<QLabel *>("labelCoinControlLowOutput");
 552     QLabel *l8 = dialog->findChild<QLabel *>("labelCoinControlChange");
 553
 554     // enable/disable "dust" and "change"
 555     dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setEnabled(nPayAmount > 0);
 556     dialog->findChild<QLabel *>("labelCoinControlLowOutput")    ->setEnabled(nPayAmount > 0);
 557     dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setEnabled(nPayAmount > 0);
 558     dialog->findChild<QLabel *>("labelCoinControlChange")       ->setEnabled(nPayAmount > 0);
 559
 560     // stats
 561     l1->setText(QString::number(nQuantity));                                 // Quantity
 562     l2->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAmount));        // Amount
 563     l3->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nPayFee));        // Fee
 564     l4->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAfterFee));      // After Fee
 565     l5->setText(((nBytes > 0) ? ASYMP_UTF8 : "") + QString::number(nBytes));        // Bytes
 566     l7->setText(fDust ? tr("yes") : tr("no"));                               // Dust
 567     l8->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nChange));        // Change
 568     if (nPayFee > 0)
 569     {
 570         l3->setText(ASYMP_UTF8 + l3->text());
 571         l4->setText(ASYMP_UTF8 + l4->text());
 572         if (nChange > 0 && !CoinControlDialog::fSubtractFeeFromAmount)
 573             l8->setText(ASYMP_UTF8 + l8->text());
 574     }
 575
 576     // turn label red when dust
 577     l7->setStyleSheet((fDust) ? "color:red;" : "");
 578
 579     // tool tips
 580     QString toolTipDust = tr("This label turns red if any recipient receives an amount smaller than the current dust threshold.");
 581
 582     // how many satoshis the estimated fee can vary per byte we guess wrong
 583     double dFeeVary = (nBytes != 0) ? (double)nPayFee / nBytes : 0;
 584
 585     QString toolTip4 = tr("Can vary +/- %1 satoshi(s) per input.").arg(dFeeVary);
 586
 587     l3->setToolTip(toolTip4);
 588     l4->setToolTip(toolTip4);
 589     l7->setToolTip(toolTipDust);
 590     l8->setToolTip(toolTip4);
 591     dialog->findChild<QLabel *>("labelCoinControlFeeText")      ->setToolTip(l3->toolTip());
 592     dialog->findChild<QLabel *>("labelCoinControlAfterFeeText") ->setToolTip(l4->toolTip());
 593     dialog->findChild<QLabel *>("labelCoinControlBytesText")    ->setToolTip(l5->toolTip());
 594     dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setToolTip(l7->toolTip());
 595     dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setToolTip(l8->toolTip());
 596
 597     // Insufficient funds
 598     QLabel *label = dialog->findChild<QLabel *>("labelCoinControlInsuffFunds");
 599     if (label)
 600         label->setVisible(nChange < 0);
 601 }
 602
 603 void CoinControlDialog::updateView()
 604 {
 605     if (!model || !model->getOptionsModel() || !model->getAddressTableModel())
 606         return;
 607
 608     bool treeMode = ui->radioTreeMode->isChecked();
 609
 610     ui->treeWidget->clear();
 611     ui->treeWidget->setEnabled(false); // performance, otherwise updateLabels would be called for every checked checkbox
 612     ui->treeWidget->setAlternatingRowColors(!treeMode);
 613     QFlags<Qt::ItemFlag> flgCheckbox = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
 614     QFlags<Qt::ItemFlag> flgTristate = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable | Qt::ItemIsTristate;
 615
 616     int nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
 617
 618     std::map<QString, std::vector<COutput> > mapCoins;
 619     model->listCoins(mapCoins);
 620
 621     for (const std::pair<QString, std::vector<COutput>>& coins : mapCoins) {
 622         CCoinControlWidgetItem *itemWalletAddress = new CCoinControlWidgetItem();
 623         itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 624         QString sWalletAddress = coins.first;
 625         QString sWalletLabel = model->getAddressTableModel()->labelForAddress(sWalletAddress);
 626         if (sWalletLabel.isEmpty())
 627             sWalletLabel = tr("(no label)");
 628
 629         if (treeMode)
 630         {
 631             // wallet address
 632             ui->treeWidget->addTopLevelItem(itemWalletAddress);
 633
 634             itemWalletAddress->setFlags(flgTristate);
 635             itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 636
 637             // label
 638             itemWalletAddress->setText(COLUMN_LABEL, sWalletLabel);
 639
 640             // address
 641             itemWalletAddress->setText(COLUMN_ADDRESS, sWalletAddress);
 642         }
 643
 644         CAmount nSum = 0;
 645         int nChildren = 0;
 646         for (const COutput& out : coins.second) {
 647             nSum += out.tx->tx->vout[out.i].nValue;
 648             nChildren++;
 649
 650             CCoinControlWidgetItem *itemOutput;
 651             if (treeMode)    itemOutput = new CCoinControlWidgetItem(itemWalletAddress);
 652             else             itemOutput = new CCoinControlWidgetItem(ui->treeWidget);
 653             itemOutput->setFlags(flgCheckbox);
 654             itemOutput->setCheckState(COLUMN_CHECKBOX,Qt::Unchecked);
 655
 656             // address
 657             CTxDestination outputAddress;
 658             QString sAddress = "";
 659             if(ExtractDestination(out.tx->tx->vout[out.i].scriptPubKey, outputAddress))
 660             {
 661                 sAddress = QString::fromStdString(EncodeDestination(outputAddress));
 662
 663                 // if listMode or change => show bitcoin address. In tree mode, address is not shown again for direct wallet address outputs
 664                 if (!treeMode || (!(sAddress == sWalletAddress)))
 665                     itemOutput->setText(COLUMN_ADDRESS, sAddress);
 666             }
 667
 668             // label
 669             if (!(sAddress == sWalletAddress)) // change
 670             {
 671                 // tooltip from where the change comes from
 672                 itemOutput->setToolTip(COLUMN_LABEL, tr("change from %1 (%2)").arg(sWalletLabel).arg(sWalletAddress));
 673                 itemOutput->setText(COLUMN_LABEL, tr("(change)"));
 674             }
 675             else if (!treeMode)
 676             {
 677                 QString sLabel = model->getAddressTableModel()->labelForAddress(sAddress);
 678                 if (sLabel.isEmpty())
 679                     sLabel = tr("(no label)");
 680                 itemOutput->setText(COLUMN_LABEL, sLabel);
 681             }
 682
 683             // amount
 684             itemOutput->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, out.tx->tx->vout[out.i].nValue));
 685             itemOutput->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)out.tx->tx->vout[out.i].nValue)); // padding so that sorting works correctly
 686
 687             // date
 688             itemOutput->setText(COLUMN_DATE, GUIUtil::dateTimeStr(out.tx->GetTxTime()));
 689             itemOutput->setData(COLUMN_DATE, Qt::UserRole, QVariant((qlonglong)out.tx->GetTxTime()));
 690
 691             // confirmations
 692             itemOutput->setText(COLUMN_CONFIRMATIONS, QString::number(out.nDepth));
 693             itemOutput->setData(COLUMN_CONFIRMATIONS, Qt::UserRole, QVariant((qlonglong)out.nDepth));
 694
 695             // transaction hash
 696             uint256 txhash = out.tx->GetHash();
 697             itemOutput->setText(COLUMN_TXHASH, QString::fromStdString(txhash.GetHex()));
 698
 699             // vout index
 700             itemOutput->setText(COLUMN_VOUT_INDEX, QString::number(out.i));
 701
 702              // disable locked coins
 703             if (model->isLockedCoin(txhash, out.i))
 704             {
 705                 COutPoint outpt(txhash, out.i);
 706                 coinControl->UnSelect(outpt); // just to be sure
 707                 itemOutput->setDisabled(true);
 708                 itemOutput->setIcon(COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
 709             }
 710
 711             // set checkbox
 712             if (coinControl->IsSelected(COutPoint(txhash, out.i)))
 713                 itemOutput->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
 714         }
 715
 716         // amount
 717         if (treeMode)
 718         {
 719             itemWalletAddress->setText(COLUMN_CHECKBOX, "(" + QString::number(nChildren) + ")");
 720             itemWalletAddress->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, nSum));
 721             itemWalletAddress->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)nSum));
 722         }
 723     }
 724
 725     // expand all partially selected
 726     if (treeMode)
 727     {
 728         for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
 729             if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
 730                 ui->treeWidget->topLevelItem(i)->setExpanded(true);
 731     }
 732
 733     // sort view
 734     sortView(sortColumn, sortOrder);
 735     ui->treeWidget->setEnabled(true);
 736 }