text: // Copyright (c) 2011-2016 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #if defined(HAVE_CONFIG_H)
  #include <config/bitcoin-config.h>
  #endif
  
  #include <qt/coincontroldialog.h>
  #include <qt/forms/ui_coincontroldialog.h>
  
  #include <cashaddrenc.h>
  #include <interfaces/node.h>
  #include <key_io.h>
  #include <policy/policy.h>
  #include <qt/addresstablemodel.h>
  #include <qt/bitcoinunits.h>
  #include <qt/guiutil.h>
  #include <qt/optionsmodel.h>
  #include <qt/platformstyle.h>
  #include <qt/walletmodel.h>
  #include <wallet/coincontrol.h>
  #include <wallet/wallet.h>
  
  #include <QApplication>
  #include <QCheckBox>
  #include <QCursor>
  #include <QDialogButtonBox>
  #include <QFlags>
  #include <QIcon>
  #include <QSettings>
  #include <QTreeWidget>
  
  QList<Amount> CoinControlDialog::payAmounts;
  bool CoinControlDialog::fSubtractFeeFromAmount = false;
  
  bool CCoinControlWidgetItem::operator<(const QTreeWidgetItem &other) const {
      int column = treeWidget()->sortColumn();
      if (column == CoinControlDialog::COLUMN_AMOUNT ||
          column == CoinControlDialog::COLUMN_DATE ||
          column == CoinControlDialog::COLUMN_CONFIRMATIONS) {
          return data(column, Qt::UserRole).toLongLong() <
                 other.data(column, Qt::UserRole).toLongLong();
      }
      return QTreeWidgetItem::operator<(other);
  }
  
  CoinControlDialog::CoinControlDialog(CCoinControl &coin_control,
                                       WalletModel *_model,
                                       const PlatformStyle *_platformStyle,
                                       QWidget *parent)
      : QDialog(parent), ui(new Ui::CoinControlDialog),
        m_coin_control(coin_control), model(_model),
        platformStyle(_platformStyle) {
      ui->setupUi(this);
  
      // context menu actions
      QAction *copyAddressAction = new QAction(tr("Copy address"), this);
      QAction *copyLabelAction = new QAction(tr("Copy label"), this);
      QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
      // we need to enable/disable this
      copyTransactionHashAction = new QAction(tr("Copy transaction ID"), this);
      // we need to enable/disable this
      lockAction = new QAction(tr("Lock unspent"), this);
      // we need to enable/disable this
      unlockAction = new QAction(tr("Unlock unspent"), this);
  
      // context menu
      contextMenu = new QMenu(this);
      contextMenu->addAction(copyAddressAction);
      contextMenu->addAction(copyLabelAction);
      contextMenu->addAction(copyAmountAction);
      contextMenu->addAction(copyTransactionHashAction);
      contextMenu->addSeparator();
      contextMenu->addAction(lockAction);
      contextMenu->addAction(unlockAction);
  
      // context menu signals
      connect(ui->treeWidget, &QWidget::customContextMenuRequested, this,
              &CoinControlDialog::showMenu);
      connect(copyAddressAction, &QAction::triggered, this,
              &CoinControlDialog::copyAddress);
      connect(copyLabelAction, &QAction::triggered, this,
              &CoinControlDialog::copyLabel);
      connect(copyAmountAction, &QAction::triggered, this,
              &CoinControlDialog::copyAmount);
      connect(copyTransactionHashAction, &QAction::triggered, this,
              &CoinControlDialog::copyTransactionHash);
      connect(lockAction, &QAction::triggered, this,
              &CoinControlDialog::lockCoin);
      connect(unlockAction, &QAction::triggered, this,
              &CoinControlDialog::unlockCoin);
  
      // clipboard actions
      QAction *clipboardQuantityAction = new QAction(tr("Copy quantity"), this);
      QAction *clipboardAmountAction = new QAction(tr("Copy amount"), this);
      QAction *clipboardFeeAction = new QAction(tr("Copy fee"), this);
      QAction *clipboardAfterFeeAction = new QAction(tr("Copy after fee"), this);
      QAction *clipboardBytesAction = new QAction(tr("Copy bytes"), this);
      QAction *clipboardLowOutputAction = new QAction(tr("Copy dust"), this);
      QAction *clipboardChangeAction = new QAction(tr("Copy change"), this);
  
      connect(clipboardQuantityAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardQuantity);
      connect(clipboardAmountAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardAmount);
      connect(clipboardFeeAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardFee);
      connect(clipboardAfterFeeAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardAfterFee);
      connect(clipboardBytesAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardBytes);
      connect(clipboardLowOutputAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardLowOutput);
      connect(clipboardChangeAction, &QAction::triggered, this,
              &CoinControlDialog::clipboardChange);
  
      ui->labelCoinControlQuantity->addAction(clipboardQuantityAction);
      ui->labelCoinControlAmount->addAction(clipboardAmountAction);
      ui->labelCoinControlFee->addAction(clipboardFeeAction);
      ui->labelCoinControlAfterFee->addAction(clipboardAfterFeeAction);
      ui->labelCoinControlBytes->addAction(clipboardBytesAction);
      ui->labelCoinControlLowOutput->addAction(clipboardLowOutputAction);
      ui->labelCoinControlChange->addAction(clipboardChangeAction);
  
      // toggle tree/list mode
      connect(ui->radioTreeMode, &QRadioButton::toggled, this,
              &CoinControlDialog::radioTreeMode);
      connect(ui->radioListMode, &QRadioButton::toggled, this,
              &CoinControlDialog::radioListMode);
  
      // click on checkbox
      connect(ui->treeWidget, &QTreeWidget::itemChanged, this,
              &CoinControlDialog::viewItemChanged);
  
      // click on header
      ui->treeWidget->header()->setSectionsClickable(true);
      connect(ui->treeWidget->header(), &QHeaderView::sectionClicked, this,
              &CoinControlDialog::headerSectionClicked);
  
      // ok button
      connect(ui->buttonBox, &QDialogButtonBox::clicked, this,
              &CoinControlDialog::buttonBoxClicked);
  
      // (un)select all
      connect(ui->pushButtonSelectAll, &QPushButton::clicked, this,
              &CoinControlDialog::buttonSelectAllClicked);
  
      ui->treeWidget->setColumnWidth(COLUMN_CHECKBOX, 84);
      ui->treeWidget->setColumnWidth(COLUMN_AMOUNT, 110);
      ui->treeWidget->setColumnWidth(COLUMN_LABEL, 190);
      ui->treeWidget->setColumnWidth(COLUMN_ADDRESS, 320);
      ui->treeWidget->setColumnWidth(COLUMN_DATE, 130);
      ui->treeWidget->setColumnWidth(COLUMN_CONFIRMATIONS, 110);
  
      // default view is sorted by amount desc
      sortView(COLUMN_AMOUNT, Qt::DescendingOrder);
  
      // restore list mode and sortorder as a convenience feature
      QSettings settings;
      if (settings.contains("nCoinControlMode") &&
          !settings.value("nCoinControlMode").toBool()) {
          ui->radioTreeMode->click();
      }
      if (settings.contains("nCoinControlSortColumn") &&
          settings.contains("nCoinControlSortOrder")) {
          sortView(settings.value("nCoinControlSortColumn").toInt(),
                   (static_cast<Qt::SortOrder>(
                       settings.value("nCoinControlSortOrder").toInt())));
      }
  
      GUIUtil::handleCloseWindowShortcut(this);
  
      if (_model->getOptionsModel() && _model->getAddressTableModel()) {
          updateView();
          updateLabelLocked();
          CoinControlDialog::updateLabels(m_coin_control, _model, this);
      }
  }
  
  CoinControlDialog::~CoinControlDialog() {
      QSettings settings;
      settings.setValue("nCoinControlMode", ui->radioListMode->isChecked());
      settings.setValue("nCoinControlSortColumn", sortColumn);
      settings.setValue("nCoinControlSortOrder", (int)sortOrder);
  
      delete ui;
  }
  
  // ok button
  void CoinControlDialog::buttonBoxClicked(QAbstractButton *button) {
      if (ui->buttonBox->buttonRole(button) == QDialogButtonBox::AcceptRole) {
          // closes the dialog
          done(QDialog::Accepted);
      }
  }
  
  // (un)select all
  void CoinControlDialog::buttonSelectAllClicked() {
      Qt::CheckState state = Qt::Checked;
      for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++) {
          if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) !=
              Qt::Unchecked) {
              state = Qt::Unchecked;
              break;
          }
      }
      ui->treeWidget->setEnabled(false);
      for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++) {
          if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) !=
              state) {
              ui->treeWidget->topLevelItem(i)->setCheckState(COLUMN_CHECKBOX,
                                                             state);
          }
      }
      ui->treeWidget->setEnabled(true);
      if (state == Qt::Unchecked) {
          // just to be sure
          m_coin_control.UnSelectAll();
      }
      CoinControlDialog::updateLabels(m_coin_control, model, this);
  }
  
  // context menu
  void CoinControlDialog::showMenu(const QPoint &point) {
      QTreeWidgetItem *item = ui->treeWidget->itemAt(point);
      if (item) {
          contextMenuItem = item;
  
          // disable some items (like Copy Transaction ID, lock, unlock) for tree
          // roots in context menu
          if (item->data(COLUMN_ADDRESS, TxIdRole).toString().length() == 64) {
              COutPoint outpoint = buildOutPoint(item);
  
              // transaction hash is 64 characters (this means it is a child node,
              // so it is not a parent node in tree mode)
              copyTransactionHashAction->setEnabled(true);
              if (model->wallet().isLockedCoin(outpoint)) {
                  lockAction->setEnabled(false);
                  unlockAction->setEnabled(true);
              } else {
                  lockAction->setEnabled(true);
                  unlockAction->setEnabled(false);
              }
          } else {
              // this means click on parent node in tree mode -> disable all
              copyTransactionHashAction->setEnabled(false);
              lockAction->setEnabled(false);
              unlockAction->setEnabled(false);
          }
  
          // show context menu
          contextMenu->exec(QCursor::pos());
      }
  }
  
  // context menu action: copy amount
  void CoinControlDialog::copyAmount() {
      GUIUtil::setClipboard(
          BitcoinUnits::removeSpaces(contextMenuItem->text(COLUMN_AMOUNT)));
  }
  
  // context menu action: copy label
  void CoinControlDialog::copyLabel() {
      if (ui->radioTreeMode->isChecked() &&
          contextMenuItem->text(COLUMN_LABEL).length() == 0 &&
          contextMenuItem->parent()) {
          GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_LABEL));
      } else {
          GUIUtil::setClipboard(contextMenuItem->text(COLUMN_LABEL));
      }
  }
  
  // context menu action: copy address
  void CoinControlDialog::copyAddress() {
      if (ui->radioTreeMode->isChecked() &&
          contextMenuItem->text(COLUMN_ADDRESS).length() == 0 &&
          contextMenuItem->parent()) {
          GUIUtil::setClipboard(contextMenuItem->parent()->text(COLUMN_ADDRESS));
      } else {
          GUIUtil::setClipboard(contextMenuItem->text(COLUMN_ADDRESS));
      }
  }
  
  // context menu action: copy transaction id
  void CoinControlDialog::copyTransactionHash() {
      GUIUtil::setClipboard(
          contextMenuItem->data(COLUMN_ADDRESS, TxIdRole).toString());
  }
  
  // context menu action: lock coin
  void CoinControlDialog::lockCoin() {
      if (contextMenuItem->checkState(COLUMN_CHECKBOX) == Qt::Checked) {
          contextMenuItem->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
      }
  
      COutPoint outpoint = buildOutPoint(contextMenuItem);
      model->wallet().lockCoin(outpoint);
      contextMenuItem->setDisabled(true);
      contextMenuItem->setIcon(
          COLUMN_CHECKBOX, platformStyle->SingleColorIcon(":/icons/lock_closed"));
      updateLabelLocked();
  }
  
  // context menu action: unlock coin
  void CoinControlDialog::unlockCoin() {
      COutPoint outpoint = buildOutPoint(contextMenuItem);
      model->wallet().unlockCoin(outpoint);
      contextMenuItem->setDisabled(false);
      contextMenuItem->setIcon(COLUMN_CHECKBOX, QIcon());
      updateLabelLocked();
  }
  
  // copy label "Quantity" to clipboard
  void CoinControlDialog::clipboardQuantity() {
      GUIUtil::setClipboard(ui->labelCoinControlQuantity->text());
  }
  
  // copy label "Amount" to clipboard
  void CoinControlDialog::clipboardAmount() {
      GUIUtil::setClipboard(ui->labelCoinControlAmount->text().left(
          ui->labelCoinControlAmount->text().indexOf(" ")));
  }
  
  // copy label "Fee" to clipboard
  void CoinControlDialog::clipboardFee() {
      GUIUtil::setClipboard(
          ui->labelCoinControlFee->text()
              .left(ui->labelCoinControlFee->text().indexOf(" "))
              .replace(ASYMP_UTF8, ""));
  }
  
  // copy label "After fee" to clipboard
  void CoinControlDialog::clipboardAfterFee() {
      GUIUtil::setClipboard(
          ui->labelCoinControlAfterFee->text()
              .left(ui->labelCoinControlAfterFee->text().indexOf(" "))
              .replace(ASYMP_UTF8, ""));
  }
  
  // copy label "Bytes" to clipboard
  void CoinControlDialog::clipboardBytes() {
      GUIUtil::setClipboard(
          ui->labelCoinControlBytes->text().replace(ASYMP_UTF8, ""));
  }
  
  // copy label "Dust" to clipboard
  void CoinControlDialog::clipboardLowOutput() {
      GUIUtil::setClipboard(ui->labelCoinControlLowOutput->text());
  }
  
  // copy label "Change" to clipboard
  void CoinControlDialog::clipboardChange() {
      GUIUtil::setClipboard(
          ui->labelCoinControlChange->text()
              .left(ui->labelCoinControlChange->text().indexOf(" "))
              .replace(ASYMP_UTF8, ""));
  }
  
  // treeview: sort
  void CoinControlDialog::sortView(int column, Qt::SortOrder order) {
      sortColumn = column;
      sortOrder = order;
      ui->treeWidget->sortItems(column, order);
      ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
  }
  
  // treeview: clicked on header
  void CoinControlDialog::headerSectionClicked(int logicalIndex) {
      // click on most left column -> do nothing
      if (logicalIndex == COLUMN_CHECKBOX) {
          ui->treeWidget->header()->setSortIndicator(sortColumn, sortOrder);
      } else {
          if (sortColumn == logicalIndex) {
              sortOrder =
                  ((sortOrder == Qt::AscendingOrder) ? Qt::DescendingOrder
                                                     : Qt::AscendingOrder);
          } else {
              sortColumn = logicalIndex;
              // if label or address then default => asc, else default => desc
              sortOrder =
                  ((sortColumn == COLUMN_LABEL || sortColumn == COLUMN_ADDRESS)
                       ? Qt::AscendingOrder
                       : Qt::DescendingOrder);
          }
  
          sortView(sortColumn, sortOrder);
      }
  }
  
  // toggle tree mode
  void CoinControlDialog::radioTreeMode(bool checked) {
      if (checked && model) {
          updateView();
      }
  }
  
  // toggle list mode
  void CoinControlDialog::radioListMode(bool checked) {
      if (checked && model) {
          updateView();
      }
  }
  
  // checkbox clicked by user
  void CoinControlDialog::viewItemChanged(QTreeWidgetItem *item, int column) {
      // transaction hash is 64 characters (this means it is a child node, so it
      // is not a parent node in tree mode)
      if (column == COLUMN_CHECKBOX &&
          item->data(COLUMN_ADDRESS, TxIdRole).toString().length() == 64) {
          COutPoint outpoint = buildOutPoint(item);
  
          if (item->checkState(COLUMN_CHECKBOX) == Qt::Unchecked) {
              m_coin_control.UnSelect(outpoint);
          } else if (item->isDisabled()) {
              // locked (this happens if "check all" through parent node)
              item->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
          } else {
              m_coin_control.Select(outpoint);
          }
  
          // selection changed -> update labels
          if (ui->treeWidget->isEnabled()) {
              // do not update on every click for (un)select all
              CoinControlDialog::updateLabels(m_coin_control, model, this);
          }
      }
  }
  
  // shows count of locked unspent outputs
  void CoinControlDialog::updateLabelLocked() {
      std::vector<COutPoint> vOutpts;
      model->wallet().listLockedCoins(vOutpts);
      if (vOutpts.size() > 0) {
          ui->labelLocked->setText(tr("(%1 locked)").arg(vOutpts.size()));
          ui->labelLocked->setVisible(true);
      } else {
          ui->labelLocked->setVisible(false);
      }
  }
  
  void CoinControlDialog::updateLabels(CCoinControl &m_coin_control,
                                       WalletModel *model, QDialog *dialog) {
      if (!model) {
          return;
      }
  
      // nPayAmount
      Amount nPayAmount = Amount::zero();
      bool fDust = false;
      for (const Amount &amount : CoinControlDialog::payAmounts) {
          nPayAmount += amount;
  
          if (amount > Amount::zero()) {
              // Assumes a p2pkh script size
              CTxOut txout(amount, CScript() << std::vector<uint8_t>(24, 0));
              fDust |= IsDust(txout, model->node().getDustRelayFee());
          }
      }
  
      Amount nAmount = Amount::zero();
      Amount nPayFee = Amount::zero();
      Amount nAfterFee = Amount::zero();
      Amount nChange = Amount::zero();
      unsigned int nBytes = 0;
      unsigned int nBytesInputs = 0;
      unsigned int nQuantity = 0;
  
      std::vector<COutPoint> vCoinControl;
      m_coin_control.ListSelected(vCoinControl);
  
      size_t i = 0;
      for (const auto &out : model->wallet().getCoins(vCoinControl)) {
          if (out.depth_in_main_chain < 0) {
              continue;
          }
  
          // unselect already spent, very unlikely scenario, this could happen
          // when selected are spent elsewhere, like rpc or another computer
          const COutPoint &output = vCoinControl[i++];
          if (out.is_spent) {
              m_coin_control.UnSelect(output);
              continue;
          }
  
          // Quantity
          nQuantity++;
  
          // Amount
          nAmount += out.txout.nValue;
  
          // Bytes
          CTxDestination address;
          if (ExtractDestination(out.txout.scriptPubKey, address)) {
              CPubKey pubkey;
              PKHash *pkhash = boost::get<PKHash>(&address);
              if (pkhash && model->wallet().getPubKey(out.txout.scriptPubKey,
                                                      ToKeyID(*pkhash), pubkey)) {
                  nBytesInputs += (pubkey.IsCompressed() ? 148 : 180);
              } else {
                  // in all error cases, simply assume 148 here
                  nBytesInputs += 148;
              }
          } else {
              nBytesInputs += 148;
          }
      }
  
      // calculation
      if (nQuantity > 0) {
          // Bytes
          // always assume +1 output for change here
          nBytes = nBytesInputs +
                   ((CoinControlDialog::payAmounts.size() > 0
                         ? CoinControlDialog::payAmounts.size() + 1
                         : 2) *
                    34) +
                   10;
  
          // 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
          if (CoinControlDialog::fSubtractFeeFromAmount) {
              if (nAmount - nPayAmount == Amount::zero()) {
                  nBytes -= 34;
              }
          }
  
          // Fee
          nPayFee = model->wallet().getMinimumFee(nBytes, m_coin_control);
  
          if (nPayAmount > Amount::zero()) {
              nChange = nAmount - nPayAmount;
              if (!CoinControlDialog::fSubtractFeeFromAmount) {
                  nChange -= nPayFee;
              }
  
              // Never create dust outputs; if we would, just add the dust to the
              // fee.
              if (nChange > Amount::zero() && nChange < MIN_CHANGE) {
                  // Assumes a p2pkh script size
                  CTxOut txout(nChange, CScript() << std::vector<uint8_t>(24, 0));
                  if (IsDust(txout, model->node().getDustRelayFee())) {
                      nPayFee += nChange;
                      nChange = Amount::zero();
                      if (CoinControlDialog::fSubtractFeeFromAmount) {
                          // we didn't detect lack of change above
                          nBytes -= 34;
                      }
                  }
              }
  
              if (nChange == Amount::zero() &&
                  !CoinControlDialog::fSubtractFeeFromAmount) {
                  nBytes -= 34;
              }
          }
  
          // after fee
          nAfterFee = std::max(nAmount - nPayFee, Amount::zero());
      }
  
      // actually update labels
      int nDisplayUnit = BitcoinUnits::base;
      if (model && model->getOptionsModel()) {
          nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
      }
  
      QLabel *l1 = dialog->findChild<QLabel *>("labelCoinControlQuantity");
      QLabel *l2 = dialog->findChild<QLabel *>("labelCoinControlAmount");
      QLabel *l3 = dialog->findChild<QLabel *>("labelCoinControlFee");
      QLabel *l4 = dialog->findChild<QLabel *>("labelCoinControlAfterFee");
      QLabel *l5 = dialog->findChild<QLabel *>("labelCoinControlBytes");
      QLabel *l7 = dialog->findChild<QLabel *>("labelCoinControlLowOutput");
      QLabel *l8 = dialog->findChild<QLabel *>("labelCoinControlChange");
  
      // enable/disable "dust" and "change"
      dialog->findChild<QLabel *>("labelCoinControlLowOutputText")
          ->setEnabled(nPayAmount > Amount::zero());
      dialog->findChild<QLabel *>("labelCoinControlLowOutput")
          ->setEnabled(nPayAmount > Amount::zero());
      dialog->findChild<QLabel *>("labelCoinControlChangeText")
          ->setEnabled(nPayAmount > Amount::zero());
      dialog->findChild<QLabel *>("labelCoinControlChange")
          ->setEnabled(nPayAmount > Amount::zero());
  
      // stats
      // Quantity
      l1->setText(QString::number(nQuantity));
      // Amount
      l2->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAmount));
      // Fee
      l3->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nPayFee));
      // After Fee
      l4->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nAfterFee));
      // Bytes
      l5->setText(((nBytes > 0) ? ASYMP_UTF8 : "") + QString::number(nBytes));
      // Dust
      l7->setText(fDust ? tr("yes") : tr("no"));
      // Change
      l8->setText(BitcoinUnits::formatWithUnit(nDisplayUnit, nChange));
      if (nPayFee > Amount::zero()) {
          l3->setText(ASYMP_UTF8 + l3->text());
          l4->setText(ASYMP_UTF8 + l4->text());
          if (nChange > Amount::zero() &&
              !CoinControlDialog::fSubtractFeeFromAmount) {
              l8->setText(ASYMP_UTF8 + l8->text());
          }
      }
  
      // turn label red when dust
      l7->setStyleSheet((fDust) ? "color:red;" : "");
  
      // tool tips
      QString toolTipDust =
          tr("This label turns red if any recipient receives an amount smaller "
             "than the current dust threshold.");
  
      // how many satoshis the estimated fee can vary per byte we guess wrong
      double dFeeVary = (nBytes != 0) ? double(nPayFee / SATOSHI) / nBytes : 0;
  
      QString toolTip4 =
          tr("Can vary +/- %1 satoshi(s) per input.").arg(dFeeVary);
  
      l3->setToolTip(toolTip4);
      l4->setToolTip(toolTip4);
      l7->setToolTip(toolTipDust);
      l8->setToolTip(toolTip4);
      dialog->findChild<QLabel *>("labelCoinControlFeeText")
          ->setToolTip(l3->toolTip());
      dialog->findChild<QLabel *>("labelCoinControlAfterFeeText")
          ->setToolTip(l4->toolTip());
      dialog->findChild<QLabel *>("labelCoinControlBytesText")
          ->setToolTip(l5->toolTip());
      dialog->findChild<QLabel *>("labelCoinControlLowOutputText")
          ->setToolTip(l7->toolTip());
      dialog->findChild<QLabel *>("labelCoinControlChangeText")
          ->setToolTip(l8->toolTip());
  
      // Insufficient funds
      QLabel *label = dialog->findChild<QLabel *>("labelCoinControlInsuffFunds");
      if (label) {
          label->setVisible(nChange < Amount::zero());
      }
  }
  
  COutPoint CoinControlDialog::buildOutPoint(const QTreeWidgetItem *item) {
      TxId txid;
      txid.SetHex(item->data(COLUMN_ADDRESS, TxIdRole).toString().toStdString());
      return COutPoint(txid, item->data(COLUMN_ADDRESS, VOutRole).toUInt());
  }
  
  void CoinControlDialog::updateView() {
      if (!model || !model->getOptionsModel() || !model->getAddressTableModel()) {
          return;
      }
  
      bool treeMode = ui->radioTreeMode->isChecked();
  
      ui->treeWidget->clear();
      // performance, otherwise updateLabels would be called for every checked
      // checkbox
      ui->treeWidget->setEnabled(false);
      ui->treeWidget->setAlternatingRowColors(!treeMode);
      QFlags<Qt::ItemFlag> flgCheckbox =
          Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable;
      QFlags<Qt::ItemFlag> flgTristate =
          Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsUserCheckable |
          Qt::ItemIsTristate;
  
      int nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
  
      for (const auto &coins : model->wallet().listCoins()) {
          CCoinControlWidgetItem *itemWalletAddress{nullptr};
          QString sWalletAddress = QString::fromStdString(
              EncodeCashAddr(coins.first, model->getChainParams()));
          QString sWalletLabel =
              model->getAddressTableModel()->labelForAddress(sWalletAddress);
          if (sWalletLabel.isEmpty()) {
              sWalletLabel = tr("(no label)");
          }
  
          if (treeMode) {
              // wallet address
              itemWalletAddress = new CCoinControlWidgetItem(ui->treeWidget);
  
              itemWalletAddress->setFlags(flgTristate);
              itemWalletAddress->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
  
              // label
              itemWalletAddress->setText(COLUMN_LABEL, sWalletLabel);
  
              // address
              itemWalletAddress->setText(COLUMN_ADDRESS, sWalletAddress);
          }
  
          Amount nSum = Amount::zero();
          int nChildren = 0;
          for (const auto &outpair : coins.second) {
              const COutPoint &output = std::get<0>(outpair);
              const interfaces::WalletTxOut &out = std::get<1>(outpair);
              nSum += out.txout.nValue;
              nChildren++;
  
              CCoinControlWidgetItem *itemOutput;
              if (treeMode) {
                  itemOutput = new CCoinControlWidgetItem(itemWalletAddress);
              } else {
                  itemOutput = new CCoinControlWidgetItem(ui->treeWidget);
              }
              itemOutput->setFlags(flgCheckbox);
              itemOutput->setCheckState(COLUMN_CHECKBOX, Qt::Unchecked);
  
              // address
              CTxDestination outputAddress;
              QString sAddress = "";
              if (ExtractDestination(out.txout.scriptPubKey, outputAddress)) {
                  sAddress = QString::fromStdString(
                      EncodeCashAddr(outputAddress, model->getChainParams()));
  
                  // if listMode or change => show bitcoin address. In tree mode,
                  // address is not shown again for direct wallet address outputs
                  if (!treeMode || (!(sAddress == sWalletAddress))) {
                      itemOutput->setText(COLUMN_ADDRESS, sAddress);
                  }
              }
  
              // label
              if (!(sAddress == sWalletAddress)) {
                  // change tooltip from where the change comes from
                  itemOutput->setToolTip(COLUMN_LABEL, tr("change from %1 (%2)")
                                                           .arg(sWalletLabel)
                                                           .arg(sWalletAddress));
                  itemOutput->setText(COLUMN_LABEL, tr("(change)"));
              } else if (!treeMode) {
                  QString sLabel =
                      model->getAddressTableModel()->labelForAddress(sAddress);
                  if (sLabel.isEmpty()) {
                      sLabel = tr("(no label)");
                  }
                  itemOutput->setText(COLUMN_LABEL, sLabel);
              }
  
              // amount
              itemOutput->setText(
                  COLUMN_AMOUNT,
                  BitcoinUnits::format(nDisplayUnit, out.txout.nValue));
              // padding so that sorting works correctly
              itemOutput->setData(
                  COLUMN_AMOUNT, Qt::UserRole,
                  QVariant(qlonglong(out.txout.nValue / SATOSHI)));
  
              // date
              itemOutput->setText(COLUMN_DATE, GUIUtil::dateTimeStr(out.time));
              itemOutput->setData(COLUMN_DATE, Qt::UserRole,
                                  QVariant((qlonglong)out.time));
  
              // confirmations
              itemOutput->setText(COLUMN_CONFIRMATIONS,
                                  QString::number(out.depth_in_main_chain));
              itemOutput->setData(COLUMN_CONFIRMATIONS, Qt::UserRole,
                                  QVariant((qlonglong)out.depth_in_main_chain));
  
              // transaction id
              itemOutput->setData(
                  COLUMN_ADDRESS, TxIdRole,
                  QString::fromStdString(output.GetTxId().GetHex()));
  
              // vout index
              itemOutput->setData(COLUMN_ADDRESS, VOutRole, output.GetN());
  
              // disable locked coins
              if (model->wallet().isLockedCoin(output)) {
                  // just to be sure
                  m_coin_control.UnSelect(output);
                  itemOutput->setDisabled(true);
                  itemOutput->setIcon(
                      COLUMN_CHECKBOX,
                      platformStyle->SingleColorIcon(":/icons/lock_closed"));
              }
  
              // set checkbox
              if (m_coin_control.IsSelected(output)) {
                  itemOutput->setCheckState(COLUMN_CHECKBOX, Qt::Checked);
              }
          }
  
          // amount
          if (treeMode) {
              itemWalletAddress->setText(COLUMN_CHECKBOX,
                                         "(" + QString::number(nChildren) + ")");
              itemWalletAddress->setText(
                  COLUMN_AMOUNT, BitcoinUnits::format(nDisplayUnit, nSum));
              itemWalletAddress->setData(COLUMN_AMOUNT, Qt::UserRole,
                                         QVariant(qlonglong(nSum / SATOSHI)));
          }
      }
  
      // expand all partially selected
      if (treeMode) {
          for (int i = 0; i < ui->treeWidget->topLevelItemCount(); i++) {
              if (ui->treeWidget->topLevelItem(i)->checkState(COLUMN_CHECKBOX) ==
                  Qt::PartiallyChecked) {
                  ui->treeWidget->topLevelItem(i)->setExpanded(true);
              }
          }
      }
  
      // sort view
      sortView(sortColumn, sortOrder);
      ui->treeWidget->setEnabled(true);
  }
  