src/qt/coincontroldialog.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 "coincontroldialog.h"
   6 #include "ui_coincontroldialog.h"
   7
   8 #include "addresstablemodel.h"
   9 #include "bitcoinunits.h"
  10 #include "guiutil.h"
  11 #include "optionsmodel.h"
  12 #include "platformstyle.h"
  13 #include "txmempool.h"
  14 #include "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 <QString>
  32 #include <QTreeWidget>
  33 #include <QTreeWidgetItem>
  34
  35 QList<CAmount> CoinControlDialog::payAmounts;
  36 CCoinControl* CoinControlDialog::coinControl = new CCoinControl();
  37 bool CoinControlDialog::fSubtractFeeFromAmount = false;
  38
  39 bool CCoinControlWidgetItem::operator<(const QTreeWidgetItem &other) const {
  40     int column = treeWidget()->sortColumn();
  41     if (column == CoinControlDialog::COLUMN_AMOUNT || column == CoinControlDialog::COLUMN_DATE || column == CoinControlDialog::COLUMN_CONFIRMATIONS)
  42         return data(column, Qt::UserRole).toLongLong() < other.data(column, Qt::UserRole).toLongLong();
  43     return QTreeWidgetItem::operator<(other);
  44 }
  45
  46 CoinControlDialog::CoinControlDialog(const PlatformStyle *_platformStyle, QWidget *parent) :
  47     QDialog(parent),
  48     ui(new Ui::CoinControlDialog),
  49     model(0),
  50     platformStyle(_platformStyle)
  51 {
  52     ui->setupUi(this);
  53
  54     // context menu actions
  55     QAction *copyAddressAction = new QAction(tr("Copy address"), this);
  56     QAction *copyLabelAction = new QAction(tr("Copy label"), this);
  57     QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
  58              copyTransactionHashAction = new QAction(tr("Copy transaction ID"), this);  // we need to enable/disable this
  59              lockAction = new QAction(tr("Lock unspent"), this);                        // we need to enable/disable this
  60              unlockAction = new QAction(tr("Unlock unspent"), this);                    // we need to enable/disable this
  61
  62     // context menu
  63     contextMenu = new QMenu(this);
  64     contextMenu->addAction(copyAddressAction);
  65     contextMenu->addAction(copyLabelAction);
  66     contextMenu->addAction(copyAmountAction);
  67     contextMenu->addAction(copyTransactionHashAction);
  68     contextMenu->addSeparator();
  69     contextMenu->addAction(lockAction);
  70     contextMenu->addAction(unlockAction);
  71
  72     // context menu signals
  73     connect(ui->treeWidget, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(showMenu(QPoint)));
  74     connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
  75     connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
  76     connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
  77     connect(copyTransactionHashAction, SIGNAL(triggered()), this, SLOT(copyTransactionHash()));
  78     connect(lockAction, SIGNAL(triggered()), this, SLOT(lockCoin()));
  79     connect(unlockAction, SIGNAL(triggered()), this, SLOT(unlockCoin()));
  80
  81     // clipboard actions
  82     QAction *clipboardQuantityAction = new QAction(tr("Copy quantity"), this);
  83     QAction *clipboardAmountAction = new QAction(tr("Copy amount"), this);
  84     QAction *clipboardFeeAction = new QAction(tr("Copy fee"), this);
  85     QAction *clipboardAfterFeeAction = new QAction(tr("Copy after fee"), this);
  86     QAction *clipboardBytesAction = new QAction(tr("Copy bytes"), this);
  87     QAction *clipboardLowOutputAction = new QAction(tr("Copy dust"), this);
  88     QAction *clipboardChangeAction = new QAction(tr("Copy change"), this);
  89
  90     connect(clipboardQuantityAction, SIGNAL(triggered()), this, SLOT(clipboardQuantity()));
  91     connect(clipboardAmountAction, SIGNAL(triggered()), this, SLOT(clipboardAmount()));
  92     connect(clipboardFeeAction, SIGNAL(triggered()), this, SLOT(clipboardFee()));
  93     connect(clipboardAfterFeeAction, SIGNAL(triggered()), this, SLOT(clipboardAfterFee()));
  94     connect(clipboardBytesAction, SIGNAL(triggered()), this, SLOT(clipboardBytes()));
  95     connect(clipboardLowOutputAction, SIGNAL(triggered()), this, SLOT(clipboardLowOutput()));
  96     connect(clipboardChangeAction, SIGNAL(triggered()), this, SLOT(clipboardChange()));
  97
  98     ui->labelCoinControlQuantity->addAction(clipboardQuantityAction);
  99     ui->labelCoinControlAmount->addAction(clipboardAmountAction);
 100     ui->labelCoinControlFee->addAction(clipboardFeeAction);
 101     ui->labelCoinControlAfterFee->addAction(clipboardAfterFeeAction);
 102     ui->labelCoinControlBytes->addAction(clipboardBytesAction);
 103     ui->labelCoinControlLowOutput->addAction(clipboardLowOutputAction);
 104     ui->labelCoinControlChange->addAction(clipboardChangeAction);
 105
 106     // toggle tree/list mode
 107     connect(ui->radioTreeMode, SIGNAL(toggled(bool)), this, SLOT(radioTreeMode(bool)));
 108     connect(ui->radioListMode, SIGNAL(toggled(bool)), this, SLOT(radioListMode(bool)));
 109
 110     // click on checkbox
 111     connect(ui->treeWidget, SIGNAL(itemChanged(QTreeWidgetItem*, int)), this, SLOT(viewItemChanged(QTreeWidgetItem*, int)));
 112
 113     // click on header
 114 #if QT_VERSION < 0x050000
 115     ui->treeWidget->header()->setClickable(true);
 116 #else
 117     ui->treeWidget->header()->setSectionsClickable(true);
 118 #endif
 119     connect(ui->treeWidget->header(), SIGNAL(sectionClicked(int)), this, SLOT(headerSectionClicked(int)));
 120
 121     // ok button
 122     connect(ui->buttonBox, SIGNAL(clicked( QAbstractButton*)), this, SLOT(buttonBoxClicked(QAbstractButton*)));
 123
 124     // (un)select all
 125     connect(ui->pushButtonSelectAll, SIGNAL(clicked()), this, SLOT(buttonSelectAllClicked()));
 126
 127     // change coin control first column label due Qt4 bug.
 128     // see https://github.com/bitcoin/bitcoin/issues/5716
 129     ui->treeWidget->headerItem()->setText(COLUMN_CHECKBOX, QString());
 130
 131     ui->treeWidget->setColumnWidth(COLUMN_CHECKBOX, 84);
 132     ui->treeWidget->setColumnWidth(COLUMN_AMOUNT, 110);
 133     ui->treeWidget->setColumnWidth(COLUMN_LABEL, 190);
 134     ui->treeWidget->setColumnWidth(COLUMN_ADDRESS, 320);
 135     ui->treeWidget->setColumnWidth(COLUMN_DATE, 130);
 136     ui->treeWidget->setColumnWidth(COLUMN_CONFIRMATIONS, 110);
 137     ui->treeWidget->setColumnHidden(COLUMN_TXHASH, true);         // store transaction hash in this column, but don't show it
 138     ui->treeWidget->setColumnHidden(COLUMN_VOUT_INDEX, true);     // store vout index in this column, but don't show it
 139
 140     // default view is sorted by amount desc
 141     sortView(COLUMN_AMOUNT, Qt::DescendingOrder);
 142
 143     // restore list mode and sortorder as a convenience feature
 144     QSettings settings;
 145     if (settings.contains("nCoinControlMode") && !settings.value("nCoinControlMode").toBool())
 146         ui->radioTreeMode->click();
 147     if (settings.contains("nCoinControlSortColumn") && settings.contains("nCoinControlSortOrder"))
 148         sortView(settings.value("nCoinControlSortColumn").toInt(), ((Qt::SortOrder)settings.value("nCoinControlSortOrder").toInt()));
 149 }
 150
 151 CoinControlDialog::~CoinControlDialog()
 152 {
 153     QSettings settings;
 154     settings.setValue("nCoinControlMode", ui->radioListMode->isChecked());
 155     settings.setValue("nCoinControlSortColumn", sortColumn);
 156     settings.setValue("nCoinControlSortOrder", (int)sortOrder);
 157
 158     delete ui;
 159 }
 160
 161 void CoinControlDialog::setModel(WalletModel *_model)
 162 {
 163     this->model = _model;
 164
 165     if(_model && _model->getOptionsModel() && _model->getAddressTableModel())
 166     {
 167         updateView();
 168         updateLabelLocked();
 169         CoinControlDialog::updateLabels(_model, this);
 170     }
 171 }
 172
 173 // ok button
 174 void CoinControlDialog::buttonBoxClicked(QAbstractButton* button)
 175 {
 176     if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::AcceptRole)
 177         done(QDialog::Accepted); // closes the dialog
 178 }
 179
 180 // (un)select all
 181 void CoinControlDialog::buttonSelectAllClicked()
 182 {
 183     Qt::CheckState state = Qt::Checked;
 184     for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
 185     {
 186         if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != Qt::Unchecked)
 187         {
 188             state = Qt::Unchecked;
 189             break;
 190         }
 191     }
 192     ui->treeWidget->setEnabled(false);
 193     for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
 194             if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) != state)
 195                 ui->treeWidget->topLevelItem(i)->setCheckState(COLUMN_CHECKBOX, state);
 196     ui->treeWidget->setEnabled(true);
 197     if (state == Qt::Unchecked)
 198         coinControl->UnSelectAll(); // just to be sure
 199     CoinControlDialog::updateLabels(model, this);
 200 }
 201
 202 // context menu
 203 void CoinControlDialog::showMenu(const QPoint &point)
 204 {
 205     QTreeWidgetItem *item = ui->treeWidget->itemAt(point);
 206     if(item)
 207     {
 208         contextMenuItem = item;
 209
 210         // disable some items (like Copy Transaction ID, lock, unlock) for tree roots in context menu
 211         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)
 212         {
 213             copyTransactionHashAction->setEnabled(true);
 214             if (model->isLockedCoin(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt()))
 215             {
 216                 lockAction->setEnabled(false);
 217                 unlockAction->setEnabled(true);
 218             }
 219             else
 220             {
 221                 lockAction->setEnabled(true);
 222                 unlockAction->setEnabled(false);
 223             }
 224         }
 225         else // this means click on parent node in tree mode -> disable all
 226         {
 227             copyTransactionHashAction->setEnabled(false);
 228             lockAction->setEnabled(false);
 229             unlockAction->setEnabled(false);
 230         }
 231
 232         // show context menu
 233         contextMenu->exec(QCursor::pos());
 234     }
 235 }
 236
 237 // context menu action: copy amount
 238 void CoinControlDialog::copyAmount()
 239 {
 240     GUIUtil::setClipboard(BitcoinUnits::removeSpaces(contextMenuItem->text(COLUMN_AMOUNT)));
 241 }
 242
 243 // context menu action: copy label
 244 void CoinControlDialog::copyLabel()
 245 {
 246     if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_LABEL).length() == 0 && contextMenuItem->parent())
 247         GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_LABEL));
 248     else
 249         GUIUtil::setClipboard(contextMenuItem->text(COLUMN_LABEL));
 250 }
 251
 252 // context menu action: copy address
 253 void CoinControlDialog::copyAddress()
 254 {
 255     if (ui->radioTreeMode->isChecked() && contextMenuItem->text(COLUMN_ADDRESS).length() == 0 && contextMenuItem->parent())
 256         GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_ADDRESS));
 257     else
 258         GUIUtil::setClipboard(contextMenuItem->text(COLUMN_ADDRESS));
 259 }
 260
 261 // context menu action: copy transaction id
 262 void CoinControlDialog::copyTransactionHash()
 263 {
 264     GUIUtil::setClipboard(contextMenuItem->text(COLUMN_TXHASH));
 265 }
 266
 267 // context menu action: lock coin
 268 void CoinControlDialog::lockCoin()
 269 {
 270     if (contextMenuItem->checkState(COLUMN_CHECKBOX) == Qt::Checked)
 271         contextMenuItem->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 272
 273     COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
 274     model->lockCoin(outpt);
 275     contextMenuItem->setDisabled(true);
 276     contextMenuItem->setIcon(COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
 277     updateLabelLocked();
 278 }
 279
 280 // context menu action: unlock coin
 281 void CoinControlDialog::unlockCoin()
 282 {
 283     COutPoint outpt(uint256S(contextMenuItem->text(COLUMN_TXHASH).toStdString()), contextMenuItem->text(COLUMN_VOUT_INDEX).toUInt());
 284     model->unlockCoin(outpt);
 285     contextMenuItem->setDisabled(false);
 286     contextMenuItem->setIcon(COLUMN_CHECKBOX, QIcon());
 287     updateLabelLocked();
 288 }
 289
 290 // copy label "Quantity" to clipboard
 291 void CoinControlDialog::clipboardQuantity()
 292 {
 293     GUIUtil::setClipboard(ui->labelCoinControlQuantity->text());
 294 }
 295
 296 // copy label "Amount" to clipboard
 297 void CoinControlDialog::clipboardAmount()
 298 {
 299     GUIUtil::setClipboard(ui->labelCoinControlAmount->text().left(ui->labelCoinControlAmount->text().indexOf(" ")));
 300 }
 301
 302 // copy label "Fee" to clipboard
 303 void CoinControlDialog::clipboardFee()
 304 {
 305     GUIUtil::setClipboard(ui->labelCoinControlFee->text().left(ui->labelCoinControlFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 306 }
 307
 308 // copy label "After fee" to clipboard
 309 void CoinControlDialog::clipboardAfterFee()
 310 {
 311     GUIUtil::setClipboard(ui->labelCoinControlAfterFee->text().left(ui->labelCoinControlAfterFee->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 312 }
 313
 314 // copy label "Bytes" to clipboard
 315 void CoinControlDialog::clipboardBytes()
 316 {
 317     GUIUtil::setClipboard(ui->labelCoinControlBytes->text().replace(ASYMP_UTF8, ""));
 318 }
 319
 320 // copy label "Dust" to clipboard
 321 void CoinControlDialog::clipboardLowOutput()
 322 {
 323     GUIUtil::setClipboard(ui->labelCoinControlLowOutput->text());
 324 }
 325
 326 // copy label "Change" to clipboard
 327 void CoinControlDialog::clipboardChange()
 328 {
 329     GUIUtil::setClipboard(ui->labelCoinControlChange->text().left(ui->labelCoinControlChange->text().indexOf(" ")).replace(ASYMP_UTF8, ""));
 330 }
 331
 332 // treeview: sort
 333 void CoinControlDialog::sortView(int column, Qt::SortOrder order)
 334 {
 335     sortColumn = column;
 336     sortOrder = order;
 337     ui->treeWidget->sortItems(column, order);
 338     ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
 339 }
 340
 341 // treeview: clicked on header
 342 void CoinControlDialog::headerSectionClicked(int logicalIndex)
 343 {
 344     if (logicalIndex == COLUMN_CHECKBOX) // click on most left column -> do nothing
 345     {
 346         ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
 347     }
 348     else
 349     {
 350         if (sortColumn == logicalIndex)
 351             sortOrder = ((sortOrder == Qt::AscendingOrder) ? Qt::DescendingOrder : Qt::AscendingOrder);
 352         else
 353         {
 354             sortColumn = logicalIndex;
 355             sortOrder = ((sortColumn == COLUMN_LABEL || sortColumn == COLUMN_ADDRESS) ? Qt::AscendingOrder : Qt::DescendingOrder); // if label or address then default => asc, else default => desc
 356         }
 357
 358         sortView(sortColumn, sortOrder);
 359     }
 360 }
 361
 362 // toggle tree mode
 363 void CoinControlDialog::radioTreeMode(bool checked)
 364 {
 365     if (checked && model)
 366         updateView();
 367 }
 368
 369 // toggle list mode
 370 void CoinControlDialog::radioListMode(bool checked)
 371 {
 372     if (checked && model)
 373         updateView();
 374 }
 375
 376 // checkbox clicked by user
 377 void CoinControlDialog::viewItemChanged(QTreeWidgetItem* item, int column)
 378 {
 379     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)
 380     {
 381         COutPoint outpt(uint256S(item->text(COLUMN_TXHASH).toStdString()), item->text(COLUMN_VOUT_INDEX).toUInt());
 382
 383         if (item->checkState(COLUMN_CHECKBOX) == Qt::Unchecked)
 384             coinControl->UnSelect(outpt);
 385         else if (item->isDisabled()) // locked (this happens if "check all" through parent node)
 386             item->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 387         else
 388             coinControl->Select(outpt);
 389
 390         // selection changed -> update labels
 391         if (ui->treeWidget->isEnabled()) // do not update on every click for (un)select all
 392             CoinControlDialog::updateLabels(model, this);
 393     }
 394
 395     // TODO: Remove this temporary qt5 fix after Qt5.3 and Qt5.4 are no longer used.
 396     //       Fixed in Qt5.5 and above: https://bugreports.qt.io/browse/QTBUG-43473
 397 #if QT_VERSION >= 0x050000
 398     else if (column == COLUMN_CHECKBOX && item->childCount() > 0)
 399     {
 400         if (item->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked && item->child(0)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
 401             item->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
 402     }
 403 #endif
 404 }
 405
 406 // shows count of locked unspent outputs
 407 void CoinControlDialog::updateLabelLocked()
 408 {
 409     std::vector<COutPoint> vOutpts;
 410     model->listLockedCoins(vOutpts);
 411     if (vOutpts.size() > 0)
 412     {
 413        ui->labelLocked->setText(tr("(%1 locked)").arg(vOutpts.size()));
 414        ui->labelLocked->setVisible(true);
 415     }
 416     else ui->labelLocked->setVisible(false);
 417 }
 418
 419 void CoinControlDialog::updateLabels(WalletModel *model, QDialog* dialog)
 420 {
 421     if (!model)
 422         return;
 423
 424     // nPayAmount
 425     CAmount nPayAmount = 0;
 426     bool fDust = false;
 427     CMutableTransaction txDummy;
 428     for (const CAmount &amount : CoinControlDialog::payAmounts)
 429     {
 430         nPayAmount += amount;
 431
 432         if (amount > 0)
 433         {
 434             CTxOut txout(amount, (CScript)std::vector<unsigned char>(24, 0));
 435             txDummy.vout.push_back(txout);
 436             fDust |= IsDust(txout, ::dustRelayFee);
 437         }
 438     }
 439
 440     CAmount nAmount             = 0;
 441     CAmount nPayFee             = 0;
 442     CAmount nAfterFee           = 0;
 443     CAmount nChange             = 0;
 444     unsigned int nBytes         = 0;
 445     unsigned int nBytesInputs   = 0;
 446     unsigned int nQuantity      = 0;
 447     bool fWitness               = false;
 448
 449     std::vector<COutPoint> vCoinControl;
 450     std::vector<COutput>   vOutputs;
 451     coinControl->ListSelected(vCoinControl);
 452     model->getOutputs(vCoinControl, vOutputs);
 453
 454     for (const COutput& out : vOutputs) {
 455         // unselect already spent, very unlikely scenario, this could happen
 456         // when selected are spent elsewhere, like rpc or another computer
 457         uint256 txhash = out.tx->GetHash();
 458         COutPoint outpt(txhash, out.i);
 459         if (model->isSpent(outpt))
 460         {
 461             coinControl->UnSelect(outpt);
 462             continue;
 463         }
 464
 465         // Quantity
 466         nQuantity++;
 467
 468         // Amount
 469         nAmount += out.tx->tx->vout[out.i].nValue;
 470
 471         // Bytes
 472         CTxDestination address;
 473         int witnessversion = 0;
 474         std::vector<unsigned char> witnessprogram;
 475         if (out.tx->tx->vout[out.i].scriptPubKey.IsWitnessProgram(witnessversion, witnessprogram))
 476         {
 477             nBytesInputs += (32 + 4 + 1 + (107 / WITNESS_SCALE_FACTOR) + 4);
 478             fWitness = true;
 479         }
 480         else if(ExtractDestination(out.tx->tx->vout[out.i].scriptPubKey, address))
 481         {
 482             CPubKey pubkey;
 483             CKeyID *keyid = boost::get<CKeyID>(&address);
 484             if (keyid && model->getPubKey(*keyid, pubkey))
 485             {
 486                 nBytesInputs += (pubkey.IsCompressed() ? 148 : 180);
 487             }
 488             else
 489                 nBytesInputs += 148; // in all error cases, simply assume 148 here
 490         }
 491         else nBytesInputs += 148;
 492     }
 493
 494     // calculation
 495     if (nQuantity > 0)
 496     {
 497         // Bytes
 498         nBytes = nBytesInputs + ((CoinControlDialog::payAmounts.size() > 0 ? CoinControlDialog::payAmounts.size() + 1 : 2) * 34) + 10; // always assume +1 output for change here
 499         if (fWitness)
 500         {
 501             // there is some fudging in these numbers related to the actual virtual transaction size calculation that will keep this estimate from being exact.
 502             // usually, the result will be an overestimate within a couple of satoshis so that the confirmation dialog ends up displaying a slightly smaller fee.
 503             // 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.
 504             nBytes += 2; // account for the serialized marker and flag bytes
 505             nBytes += nQuantity; // account for the witness byte that holds the number of stack items for each input.
 506         }
 507
 508         // 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
 509         if (CoinControlDialog::fSubtractFeeFromAmount)
 510             if (nAmount - nPayAmount == 0)
 511                 nBytes -= 34;
 512
 513         // Fee
 514         nPayFee = GetMinimumFee(nBytes, *coinControl, ::mempool, ::feeEstimator, nullptr /* FeeCalculation */);
 515
 516         if (nPayAmount > 0)
 517         {
 518             nChange = nAmount - nPayAmount;
 519             if (!CoinControlDialog::fSubtractFeeFromAmount)
 520                 nChange -= nPayFee;
 521
 522             // Never create dust outputs; if we would, just add the dust to the fee.
 523             if (nChange > 0 && nChange < MIN_CHANGE)
 524             {
 525                 CTxOut txout(nChange, (CScript)std::vector<unsigned char>(24, 0));
 526                 if (IsDust(txout, ::dustRelayFee))
 527                 {
 528                     nPayFee += nChange;
 529                     nChange = 0;
 530                     if (CoinControlDialog::fSubtractFeeFromAmount)
 531                         nBytes -= 34; // we didn't detect lack of change above
 532                 }
 533             }
 534
 535             if (nChange == 0 && !CoinControlDialog::fSubtractFeeFromAmount)
 536                 nBytes -= 34;
 537         }
 538
 539         // after fee
 540         nAfterFee = std::max<CAmount>(nAmount - nPayFee, 0);
 541     }
 542
 543     // actually update labels
 544     int nDisplayUnit = BitcoinUnits::BTC;
 545     if (model && model->getOptionsModel())
 546         nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
 547
 548     QLabel *l1 = dialog->findChild<QLabel *>("labelCoinControlQuantity");
 549     QLabel *l2 = dialog->findChild<QLabel *>("labelCoinControlAmount");
 550     QLabel *l3 = dialog->findChild<QLabel *>("labelCoinControlFee");
 551     QLabel *l4 = dialog->findChild<QLabel *>("labelCoinControlAfterFee");
 552     QLabel *l5 = dialog->findChild<QLabel *>("labelCoinControlBytes");
 553     QLabel *l7 = dialog->findChild<QLabel *>("labelCoinControlLowOutput");
 554     QLabel *l8 = dialog->findChild<QLabel *>("labelCoinControlChange");
 555
 556     // enable/disable "dust" and "change"
 557     dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setEnabled(nPayAmount > 0);
 558     dialog->findChild<QLabel *>("labelCoinControlLowOutput")    ->setEnabled(nPayAmount > 0);
 559     dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setEnabled(nPayAmount > 0);
 560     dialog->findChild<QLabel *>("labelCoinControlChange")       ->setEnabled(nPayAmount > 0);
 561
 562     // stats
 563     l1->setText(QString::number(nQuantity));                                 // Quantity
 564     l2->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAmount));        // Amount
 565     l3->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nPayFee));        // Fee
 566     l4->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAfterFee));      // After Fee
 567     l5->setText(((nBytes > 0) ? ASYMP_UTF8 : "") + QString::number(nBytes));        // Bytes
 568     l7->setText(fDust ? tr("yes") : tr("no"));                               // Dust
 569     l8->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nChange));        // Change
 570     if (nPayFee > 0)
 571     {
 572         l3->setText(ASYMP_UTF8 + l3->text());
 573         l4->setText(ASYMP_UTF8 + l4->text());
 574         if (nChange > 0 && !CoinControlDialog::fSubtractFeeFromAmount)
 575             l8->setText(ASYMP_UTF8 + l8->text());
 576     }
 577
 578     // turn label red when dust
 579     l7->setStyleSheet((fDust) ? "color:red;" : "");
 580
 581     // tool tips
 582     QString toolTipDust = tr("This label turns red if any recipient receives an amount smaller than the current dust threshold.");
 583
 584     // how many satoshis the estimated fee can vary per byte we guess wrong
 585     double dFeeVary = (double)nPayFee / nBytes;
 586
 587     QString toolTip4 = tr("Can vary +/- %1 satoshi(s) per input.").arg(dFeeVary);
 588
 589     l3->setToolTip(toolTip4);
 590     l4->setToolTip(toolTip4);
 591     l7->setToolTip(toolTipDust);
 592     l8->setToolTip(toolTip4);
 593     dialog->findChild<QLabel *>("labelCoinControlFeeText")      ->setToolTip(l3->toolTip());
 594     dialog->findChild<QLabel *>("labelCoinControlAfterFeeText") ->setToolTip(l4->toolTip());
 595     dialog->findChild<QLabel *>("labelCoinControlBytesText")    ->setToolTip(l5->toolTip());
 596     dialog->findChild<QLabel *>("labelCoinControlLowOutputText")->setToolTip(l7->toolTip());
 597     dialog->findChild<QLabel *>("labelCoinControlChangeText")   ->setToolTip(l8->toolTip());
 598
 599     // Insufficient funds
 600     QLabel *label = dialog->findChild<QLabel *>("labelCoinControlInsuffFunds");
 601     if (label)
 602         label->setVisible(nChange < 0);
 603 }
 604
 605 void CoinControlDialog::updateView()
 606 {
 607     if (!model || !model->getOptionsModel() || !model->getAddressTableModel())
 608         return;
 609
 610     bool treeMode = ui->radioTreeMode->isChecked();
 611
 612     ui->treeWidget->clear();
 613     ui->treeWidget->setEnabled(false); // performance, otherwise updateLabels would be called for every checked checkbox
 614     ui->treeWidget->setAlternatingRowColors(!treeMode);
 615     QFlags<Qt::ItemFlag> flgCheckbox = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
 616     QFlags<Qt::ItemFlag> flgTristate = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable | Qt::ItemIsTristate;
 617
 618     int nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
 619
 620     std::map<QString, std::vector<COutput> > mapCoins;
 621     model->listCoins(mapCoins);
 622
 623     for (const std::pair<QString, std::vector<COutput>>& coins : mapCoins) {
 624         CCoinControlWidgetItem *itemWalletAddress = new CCoinControlWidgetItem();
 625         itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 626         QString sWalletAddress = coins.first;
 627         QString sWalletLabel = model->getAddressTableModel()->labelForAddress(sWalletAddress);
 628         if (sWalletLabel.isEmpty())
 629             sWalletLabel = tr("(no label)");
 630
 631         if (treeMode)
 632         {
 633             // wallet address
 634             ui->treeWidget->addTopLevelItem(itemWalletAddress);
 635
 636             itemWalletAddress->setFlags(flgTristate);
 637             itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
 638
 639             // label
 640             itemWalletAddress->setText(COLUMN_LABEL, sWalletLabel);
 641
 642             // address
 643             itemWalletAddress->setText(COLUMN_ADDRESS, sWalletAddress);
 644         }
 645
 646         CAmount nSum = 0;
 647         int nChildren = 0;
 648         for (const COutput& out : coins.second) {
 649             nSum += out.tx->tx->vout[out.i].nValue;
 650             nChildren++;
 651
 652             CCoinControlWidgetItem *itemOutput;
 653             if (treeMode)    itemOutput = new CCoinControlWidgetItem(itemWalletAddress);
 654             else             itemOutput = new CCoinControlWidgetItem(ui->treeWidget);
 655             itemOutput->setFlags(flgCheckbox);
 656             itemOutput->setCheckState(COLUMN_CHECKBOX,Qt::Unchecked);
 657
 658             // address
 659             CTxDestination outputAddress;
 660             QString sAddress = "";
 661             if(ExtractDestination(out.tx->tx->vout[out.i].scriptPubKey, outputAddress))
 662             {
 663                 sAddress = QString::fromStdString(EncodeDestination(outputAddress));
 664
 665                 // if listMode or change => show bitcoin address. In tree mode, address is not shown again for direct wallet address outputs
 666                 if (!treeMode || (!(sAddress == sWalletAddress)))
 667                     itemOutput->setText(COLUMN_ADDRESS, sAddress);
 668             }
 669
 670             // label
 671             if (!(sAddress == sWalletAddress)) // change
 672             {
 673                 // tooltip from where the change comes from
 674                 itemOutput->setToolTip(COLUMN_LABEL, tr("change from %1 (%2)").arg(sWalletLabel).arg(sWalletAddress));
 675                 itemOutput->setText(COLUMN_LABEL, tr("(change)"));
 676             }
 677             else if (!treeMode)
 678             {
 679                 QString sLabel = model->getAddressTableModel()->labelForAddress(sAddress);
 680                 if (sLabel.isEmpty())
 681                     sLabel = tr("(no label)");
 682                 itemOutput->setText(COLUMN_LABEL, sLabel);
 683             }
 684
 685             // amount
 686             itemOutput->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, out.tx->tx->vout[out.i].nValue));
 687             itemOutput->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)out.tx->tx->vout[out.i].nValue)); // padding so that sorting works correctly
 688
 689             // date
 690             itemOutput->setText(COLUMN_DATE, GUIUtil::dateTimeStr(out.tx->GetTxTime()));
 691             itemOutput->setData(COLUMN_DATE, Qt::UserRole, QVariant((qlonglong)out.tx->GetTxTime()));
 692
 693             // confirmations
 694             itemOutput->setText(COLUMN_CONFIRMATIONS, QString::number(out.nDepth));
 695             itemOutput->setData(COLUMN_CONFIRMATIONS, Qt::UserRole, QVariant((qlonglong)out.nDepth));
 696
 697             // transaction hash
 698             uint256 txhash = out.tx->GetHash();
 699             itemOutput->setText(COLUMN_TXHASH, QString::fromStdString(txhash.GetHex()));
 700
 701             // vout index
 702             itemOutput->setText(COLUMN_VOUT_INDEX, QString::number(out.i));
 703
 704              // disable locked coins
 705             if (model->isLockedCoin(txhash, out.i))
 706             {
 707                 COutPoint outpt(txhash, out.i);
 708                 coinControl->UnSelect(outpt); // just to be sure
 709                 itemOutput->setDisabled(true);
 710                 itemOutput->setIcon(COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
 711             }
 712
 713             // set checkbox
 714             if (coinControl->IsSelected(COutPoint(txhash, out.i)))
 715                 itemOutput->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
 716         }
 717
 718         // amount
 719         if (treeMode)
 720         {
 721             itemWalletAddress->setText(COLUMN_CHECKBOX, "(" + QString::number(nChildren) + ")");
 722             itemWalletAddress->setText(COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, nSum));
 723             itemWalletAddress->setData(COLUMN_AMOUNT, Qt::UserRole, QVariant((qlonglong)nSum));
 724         }
 725     }
 726
 727     // expand all partially selected
 728     if (treeMode)
 729     {
 730         for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++)
 731             if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) == Qt::PartiallyChecked)
 732                 ui->treeWidget->topLevelItem(i)->setExpanded(true);
 733     }
 734
 735     // sort view
 736     sortView(sortColumn, sortOrder);
 737     ui->treeWidget->setEnabled(true);
 738 }