text: // Copyright (c) 2011-2015 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <qt/transactionview.h>
  
  #include <qt/addresstablemodel.h>
  #include <qt/bitcoinunits.h>
  #include <qt/csvmodelwriter.h>
  #include <qt/editaddressdialog.h>
  #include <qt/optionsmodel.h>
  #include <qt/qrdialog.h>
  #include <qt/transactiondescdialog.h>
  #include <qt/transactionfilterproxy.h>
  #include <qt/transactionrecord.h>
  #include <qt/transactiontablemodel.h>
  #include <qt/walletmodel.h>
  
  #include <privatesend/privatesend-client.h>
  #include <ui_interface.h>
  
  #include <QCalendarWidget>
  #include <QComboBox>
  #include <QDateTimeEdit>
  #include <QDesktopServices>
  #include <QDoubleValidator>
  #include <QHBoxLayout>
  #include <QHeaderView>
  #include <QLabel>
  #include <QLineEdit>
  #include <QListView>
  #include <QMenu>
  #include <QPoint>
  #include <QScrollBar>
  #include <QSettings>
  #include <QSignalMapper>
  #include <QTableView>
  #include <QTextCharFormat>
  #include <QTimer>
  #include <QUrl>
  #include <QVBoxLayout>
  
  /** Date format for persistence */
  static const char* PERSISTENCE_DATE_FORMAT = "yyyy-MM-dd";
  
  TransactionView::TransactionView(QWidget* parent) :
      QWidget(parent), model(0), transactionProxyModel(0),
      transactionView(0), abandonAction(0), columnResizingFixer(0)
  {
      QSettings settings;
      // Build filter row
      setContentsMargins(0,0,0,0);
  
      QHBoxLayout *hlayout = new QHBoxLayout();
      hlayout->setContentsMargins(0,0,0,0);
      hlayout->setSpacing(1);
      hlayout->addSpacing(STATUS_COLUMN_WIDTH - 2);
  
      watchOnlyWidget = new QComboBox(this);
      watchOnlyWidget->setFixedWidth(24);
      watchOnlyWidget->addItem("", TransactionFilterProxy::WatchOnlyFilter_All);
      watchOnlyWidget->addItem(QIcon(":/icons/eye_plus"), "", TransactionFilterProxy::WatchOnlyFilter_Yes);
      watchOnlyWidget->addItem(QIcon(":/icons/eye_minus"), "", TransactionFilterProxy::WatchOnlyFilter_No);
      hlayout->addWidget(watchOnlyWidget);
  
      instantsendWidget = new QComboBox(this);
      instantsendWidget->setFixedWidth(24);
      instantsendWidget->addItem(tr("All"), TransactionFilterProxy::InstantSendFilter_All);
      instantsendWidget->addItem(tr("Locked by InstantSend"), TransactionFilterProxy::InstantSendFilter_Yes);
      instantsendWidget->addItem(tr("Not locked by InstantSend"), TransactionFilterProxy::InstantSendFilter_No);
      instantsendWidget->setObjectName("instantsendWidget");
      hlayout->addWidget(instantsendWidget);
  
      dateWidget = new QComboBox(this);
      dateWidget->setFixedWidth(120);
      dateWidget->addItem(tr("All"), All);
      dateWidget->addItem(tr("Today"), Today);
      dateWidget->addItem(tr("This week"), ThisWeek);
      dateWidget->addItem(tr("This month"), ThisMonth);
      dateWidget->addItem(tr("Last month"), LastMonth);
      dateWidget->addItem(tr("This year"), ThisYear);
      dateWidget->addItem(tr("Range..."), Range);
      dateWidget->setCurrentIndex(settings.value("transactionDate").toInt());
      hlayout->addWidget(dateWidget);
  
      typeWidget = new QComboBox(this);
      typeWidget->setFixedWidth(TYPE_COLUMN_WIDTH - 1);
      typeWidget->addItem(tr("All"), TransactionFilterProxy::ALL_TYPES);
      typeWidget->addItem(tr("Most Common"), TransactionFilterProxy::COMMON_TYPES);
      typeWidget->addItem(tr("Received with"), TransactionFilterProxy::TYPE(TransactionRecord::RecvWithAddress) |
                                          TransactionFilterProxy::TYPE(TransactionRecord::RecvFromOther));
      typeWidget->addItem(tr("Sent to"), TransactionFilterProxy::TYPE(TransactionRecord::SendToAddress) |
                                    TransactionFilterProxy::TYPE(TransactionRecord::SendToOther));
      typeWidget->addItem("PrivateSend", TransactionFilterProxy::TYPE(TransactionRecord::PrivateSend));
      typeWidget->addItem(tr("PrivateSend Make Collateral Inputs"), TransactionFilterProxy::TYPE(TransactionRecord::PrivateSendMakeCollaterals));
      typeWidget->addItem(tr("PrivateSend Create Denominations"), TransactionFilterProxy::TYPE(TransactionRecord::PrivateSendCreateDenominations));
      typeWidget->addItem(tr("PrivateSend Denominate"), TransactionFilterProxy::TYPE(TransactionRecord::PrivateSendDenominate));
      typeWidget->addItem(tr("PrivateSend Collateral Payment"), TransactionFilterProxy::TYPE(TransactionRecord::PrivateSendCollateralPayment));
      typeWidget->addItem(tr("To yourself"), TransactionFilterProxy::TYPE(TransactionRecord::SendToSelf));
      typeWidget->addItem(tr("Mined"), TransactionFilterProxy::TYPE(TransactionRecord::Generated));
      typeWidget->addItem(tr("Other"), TransactionFilterProxy::TYPE(TransactionRecord::Other));
      typeWidget->setCurrentIndex(settings.value("transactionType").toInt());
  
      hlayout->addWidget(typeWidget);
  
      search_widget = new QLineEdit(this);
      search_widget->setPlaceholderText(tr("Enter address, transaction id, or label to search"));
      search_widget->setObjectName("search_widget");
      hlayout->addWidget(search_widget);
  
      amountWidget = new QLineEdit(this);
      amountWidget->setPlaceholderText(tr("Min amount"));
      amountWidget->setFixedWidth(125);
      amountWidget->setValidator(new QDoubleValidator(0, 1e20, 8, this));
      amountWidget->setObjectName("amountWidget");
      hlayout->addWidget(amountWidget);
  
      // Delay before filtering transactions in ms
      static const int input_filter_delay = 200;
  
      QTimer* amount_typing_delay = new QTimer(this);
      amount_typing_delay->setSingleShot(true);
      amount_typing_delay->setInterval(input_filter_delay);
  
      QTimer* prefix_typing_delay = new QTimer(this);
      prefix_typing_delay->setSingleShot(true);
      prefix_typing_delay->setInterval(input_filter_delay);
  
      QVBoxLayout *vlayout = new QVBoxLayout(this);
      vlayout->setContentsMargins(0,0,0,0);
      vlayout->setSpacing(0);
  
      QTableView *view = new QTableView(this);
      vlayout->addLayout(hlayout);
      vlayout->addWidget(createDateRangeWidget());
      vlayout->addWidget(view);
      vlayout->setSpacing(0);
  #ifndef Q_OS_MAC
      int width = view->verticalScrollBar()->sizeHint().width();
      // Cover scroll bar width with spacing
      hlayout->addSpacing(width);
      // Always show scroll bar
      view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
  #endif
      view->setTabKeyNavigation(false);
      view->setContextMenuPolicy(Qt::CustomContextMenu);
  
      view->installEventFilter(this);
  
      transactionView = view;
      transactionView->setObjectName("transactionView");
  
      // Actions
      abandonAction = new QAction(tr("Abandon transaction"), this);
      QAction *copyAddressAction = new QAction(tr("Copy address"), this);
      QAction *copyLabelAction = new QAction(tr("Copy label"), this);
      QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
      QAction *copyTxIDAction = new QAction(tr("Copy transaction ID"), this);
      QAction *copyTxHexAction = new QAction(tr("Copy raw transaction"), this);
      QAction *copyTxPlainText = new QAction(tr("Copy full transaction details"), this);
      QAction *editLabelAction = new QAction(tr("Edit label"), this);
      QAction *showDetailsAction = new QAction(tr("Show transaction details"), this);
      QAction *showAddressQRCodeAction = new QAction(tr("Show address QR code"), this);
  
      contextMenu = new QMenu(this);
      contextMenu->setObjectName("contextMenu");
      contextMenu->addAction(copyAddressAction);
      contextMenu->addAction(copyLabelAction);
      contextMenu->addAction(copyAmountAction);
      contextMenu->addAction(copyTxIDAction);
      contextMenu->addAction(copyTxHexAction);
      contextMenu->addAction(copyTxPlainText);
      contextMenu->addAction(showDetailsAction);
      contextMenu->addAction(showAddressQRCodeAction);
      contextMenu->addSeparator();
      contextMenu->addAction(abandonAction);
      contextMenu->addAction(editLabelAction);
  
      mapperThirdPartyTxUrls = new QSignalMapper(this);
  
      // Connect actions
      connect(mapperThirdPartyTxUrls, SIGNAL(mapped(QString)), this, SLOT(openThirdPartyTxUrl(QString)));
  
      connect(dateWidget, SIGNAL(activated(int)), this, SLOT(chooseDate(int)));
      connect(typeWidget, SIGNAL(activated(int)), this, SLOT(chooseType(int)));
      connect(watchOnlyWidget, SIGNAL(activated(int)), this, SLOT(chooseWatchonly(int)));
      connect(instantsendWidget, SIGNAL(activated(int)), this, SLOT(chooseInstantSend(int)));
      connect(amountWidget, SIGNAL(textChanged(QString)), amount_typing_delay, SLOT(start()));
      connect(amount_typing_delay, SIGNAL(timeout()), this, SLOT(changedAmount()));
      connect(search_widget, SIGNAL(textChanged(QString)), prefix_typing_delay, SLOT(start()));
      connect(prefix_typing_delay, SIGNAL(timeout()), this, SLOT(changedSearch()));
  
      connect(view, SIGNAL(doubleClicked(QModelIndex)), this, SIGNAL(doubleClicked(QModelIndex)));
      connect(view, SIGNAL(clicked(QModelIndex)), this, SLOT(computeSum()));
      connect(view, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextualMenu(QPoint)));
  
      connect(abandonAction, SIGNAL(triggered()), this, SLOT(abandonTx()));
      connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
      connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
      connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
      connect(copyTxIDAction, SIGNAL(triggered()), this, SLOT(copyTxID()));
      connect(copyTxHexAction, SIGNAL(triggered()), this, SLOT(copyTxHex()));
      connect(copyTxPlainText, SIGNAL(triggered()), this, SLOT(copyTxPlainText()));
      connect(editLabelAction, SIGNAL(triggered()), this, SLOT(editLabel()));
      connect(showDetailsAction, SIGNAL(triggered()), this, SLOT(showDetails()));
      connect(showAddressQRCodeAction, SIGNAL(triggered()), this, SLOT(showAddressQRCode()));
  
      updatePrivateSendVisibility();
  }
  
  void TransactionView::setModel(WalletModel *_model)
  {
      QSettings settings;
      this->model = _model;
      if(_model)
      {
          transactionProxyModel = new TransactionFilterProxy(this);
          transactionProxyModel->setSourceModel(_model->getTransactionTableModel());
          transactionProxyModel->setDynamicSortFilter(true);
          transactionProxyModel->setSortCaseSensitivity(Qt::CaseInsensitive);
          transactionProxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
  
          transactionProxyModel->setSortRole(Qt::EditRole);
  
          transactionView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
          transactionView->setModel(transactionProxyModel);
          transactionView->setAlternatingRowColors(true);
          transactionView->setSelectionBehavior(QAbstractItemView::SelectRows);
          transactionView->setSelectionMode(QAbstractItemView::ExtendedSelection);
          transactionView->setSortingEnabled(true);
          transactionView->sortByColumn(TransactionTableModel::Date, Qt::DescendingOrder);
          transactionView->verticalHeader()->hide();
  
          transactionView->setColumnWidth(TransactionTableModel::Status, STATUS_COLUMN_WIDTH);
          transactionView->setColumnWidth(TransactionTableModel::Watchonly, WATCHONLY_COLUMN_WIDTH);
          transactionView->setColumnWidth(TransactionTableModel::InstantSend, INSTANTSEND_COLUMN_WIDTH);
          transactionView->setColumnWidth(TransactionTableModel::Date, DATE_COLUMN_WIDTH);
          transactionView->setColumnWidth(TransactionTableModel::Type, TYPE_COLUMN_WIDTH);
          transactionView->setColumnWidth(TransactionTableModel::Amount, AMOUNT_MINIMUM_COLUMN_WIDTH);
  
          // Note: it's a good idea to connect this signal AFTER the model is set
          connect(transactionView->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this, SLOT(computeSum()));
  
          columnResizingFixer = new GUIUtil::TableViewLastColumnResizingFixer(transactionView, AMOUNT_MINIMUM_COLUMN_WIDTH, MINIMUM_COLUMN_WIDTH, this);
  
          if (_model->getOptionsModel())
          {
              // Add third party transaction URLs to context menu
              QStringList listUrls = _model->getOptionsModel()->getThirdPartyTxUrls().split("|", QString::SkipEmptyParts);
              for (int i = 0; i < listUrls.size(); ++i)
              {
                  QString host = QUrl(listUrls[i].trimmed(), QUrl::StrictMode).host();
                  if (!host.isEmpty())
                  {
                      QAction *thirdPartyTxUrlAction = new QAction(host, this); // use host as menu item label
                      if (i == 0)
                          contextMenu->addSeparator();
                      contextMenu->addAction(thirdPartyTxUrlAction);
                      connect(thirdPartyTxUrlAction, SIGNAL(triggered()), mapperThirdPartyTxUrls, SLOT(map()));
                      mapperThirdPartyTxUrls->setMapping(thirdPartyTxUrlAction, listUrls[i].trimmed());
                  }
              }
          }
  
          // show/hide column Watch-only
          updateWatchOnlyColumn(_model->haveWatchOnly());
  
          // Watch-only signal
          connect(_model, SIGNAL(notifyWatchonlyChanged(bool)), this, SLOT(updateWatchOnlyColumn(bool)));
  
          // Update transaction list with persisted settings
          chooseType(settings.value("transactionType").toInt());
          chooseDate(settings.value("transactionDate").toInt());
      }
  }
  
  void TransactionView::chooseDate(int idx)
  {
      if (!transactionProxyModel) return;
  
      QSettings settings;
      QDate current = QDate::currentDate();
      dateRangeWidget->setVisible(false);
      switch(dateWidget->itemData(idx).toInt())
      {
      case All:
          transactionProxyModel->setDateRange(
                  TransactionFilterProxy::MIN_DATE,
                  TransactionFilterProxy::MAX_DATE);
          break;
      case Today:
          transactionProxyModel->setDateRange(
                  QDateTime(current),
                  TransactionFilterProxy::MAX_DATE);
          break;
      case ThisWeek: {
          // Find last Monday
          QDate startOfWeek = current.addDays(-(current.dayOfWeek()-1));
          transactionProxyModel->setDateRange(
                  QDateTime(startOfWeek),
                  TransactionFilterProxy::MAX_DATE);
  
          } break;
      case ThisMonth:
          transactionProxyModel->setDateRange(
                  QDateTime(QDate(current.year(), current.month(), 1)),
                  TransactionFilterProxy::MAX_DATE);
          break;
      case LastMonth:
          transactionProxyModel->setDateRange(
                  QDateTime(QDate(current.year(), current.month(), 1).addMonths(-1)),
                  QDateTime(QDate(current.year(), current.month(), 1)));
          break;
      case ThisYear:
          transactionProxyModel->setDateRange(
                  QDateTime(QDate(current.year(), 1, 1)),
                  TransactionFilterProxy::MAX_DATE);
          break;
      case Range:
          dateRangeWidget->setVisible(true);
          dateRangeChanged();
          break;
      }
      // Persist new date settings
      settings.setValue("transactionDate", idx);
      if (dateWidget->itemData(idx).toInt() == Range){
          settings.setValue("transactionDateFrom", dateFrom->date().toString(PERSISTENCE_DATE_FORMAT));
          settings.setValue("transactionDateTo", dateTo->date().toString(PERSISTENCE_DATE_FORMAT));
      }
  }
  
  void TransactionView::chooseType(int idx)
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setTypeFilter(
          typeWidget->itemData(idx).toInt());
      // Persist settings
      QSettings settings;
      settings.setValue("transactionType", idx);
  }
  
  void TransactionView::chooseWatchonly(int idx)
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setWatchOnlyFilter(
          static_cast<TransactionFilterProxy::WatchOnlyFilter>(watchOnlyWidget->itemData(idx).toInt()));
  }
  
  void TransactionView::chooseInstantSend(int idx)
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setInstantSendFilter(
          (TransactionFilterProxy::InstantSendFilter)instantsendWidget->itemData(idx).toInt());
  }
  
  void TransactionView::changedSearch()
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setSearchString(search_widget->text());
  }
  
  void TransactionView::changedAmount()
  {
      if(!transactionProxyModel)
          return;
      CAmount amount_parsed = 0;
  
      // Replace "," by "." so BitcoinUnits::parse will not fail for users entering "," as decimal separator
      QString newAmount = amountWidget->text();
      newAmount.replace(QString(","), QString("."));
  
      if (BitcoinUnits::parse(model->getOptionsModel()->getDisplayUnit(), newAmount, &amount_parsed)) {
          transactionProxyModel->setMinAmount(amount_parsed);
      }
      else
      {
          transactionProxyModel->setMinAmount(0);
      }
  }
  
  void TransactionView::exportClicked()
  {
      if (!model || !model->getOptionsModel()) {
          return;
      }
  
      // CSV is currently the only supported format
      QString filename = GUIUtil::getSaveFileName(this,
          tr("Export Transaction History"), QString(),
          tr("Comma separated file (*.csv)"), nullptr);
  
      if (filename.isNull())
          return;
  
      CSVModelWriter writer(filename);
  
      // name, column, role
      writer.setModel(transactionProxyModel);
      writer.addColumn(tr("Confirmed"), 0, TransactionTableModel::ConfirmedRole);
      if (model->haveWatchOnly())
          writer.addColumn(tr("Watch-only"), TransactionTableModel::Watchonly);
      writer.addColumn(tr("Date"), 0, TransactionTableModel::DateRole);
      writer.addColumn(tr("Type"), TransactionTableModel::Type, Qt::EditRole);
      writer.addColumn(tr("Label"), 0, TransactionTableModel::LabelRole);
      writer.addColumn(tr("Address"), 0, TransactionTableModel::AddressRole);
      writer.addColumn(BitcoinUnits::getAmountColumnTitle(model->getOptionsModel()->getDisplayUnit()), 0, TransactionTableModel::FormattedAmountRole);
      writer.addColumn(tr("ID"), 0, TransactionTableModel::TxHashRole);
  
      if(!writer.write()) {
          Q_EMIT message(tr("Exporting Failed"), tr("There was an error trying to save the transaction history to %1.").arg(filename),
              CClientUIInterface::MSG_ERROR);
      }
      else {
          Q_EMIT message(tr("Exporting Successful"), tr("The transaction history was successfully saved to %1.").arg(filename),
              CClientUIInterface::MSG_INFORMATION);
      }
  }
  
  void TransactionView::contextualMenu(const QPoint &point)
  {
      if (!transactionView || !transactionView->selectionModel())
          return;
      QModelIndex index = transactionView->indexAt(point);
      QModelIndexList selection = transactionView->selectionModel()->selectedRows(0);
      if (selection.empty())
          return;
  
      // check if transaction can be abandoned, disable context menu action in case it doesn't
      uint256 hash;
      hash.SetHex(selection.at(0).data(TransactionTableModel::TxHashRole).toString().toStdString());
      abandonAction->setEnabled(model->transactionCanBeAbandoned(hash));
  
      if(index.isValid())
      {
          contextMenu->popup(transactionView->viewport()->mapToGlobal(point));
      }
  }
  
  void TransactionView::abandonTx()
  {
      if(!transactionView || !transactionView->selectionModel())
          return;
      QModelIndexList selection = transactionView->selectionModel()->selectedRows(0);
  
      // get the hash from the TxHashRole (QVariant / QString)
      uint256 hash;
      QString hashQStr = selection.at(0).data(TransactionTableModel::TxHashRole).toString();
      hash.SetHex(hashQStr.toStdString());
  
      // Abandon the wallet transaction over the walletModel
      model->abandonTransaction(hash);
  
      // Update the table
      model->getTransactionTableModel()->updateTransaction(hashQStr, CT_UPDATED, false);
  }
  
  void TransactionView::copyAddress()
  {
      GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::AddressRole);
  }
  
  void TransactionView::copyLabel()
  {
      GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::LabelRole);
  }
  
  void TransactionView::copyAmount()
  {
      GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::FormattedAmountRole);
  }
  
  void TransactionView::copyTxID()
  {
      GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::TxHashRole);
  }
  
  void TransactionView::copyTxHex()
  {
      GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::TxHexRole);
  }
  
  void TransactionView::copyTxPlainText()
  {
      GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::TxPlainTextRole);
  }
  
  void TransactionView::editLabel()
  {
      if(!transactionView->selectionModel() ||!model)
          return;
      QModelIndexList selection = transactionView->selectionModel()->selectedRows();
      if(!selection.isEmpty())
      {
          AddressTableModel *addressBook = model->getAddressTableModel();
          if(!addressBook)
              return;
          QString address = selection.at(0).data(TransactionTableModel::AddressRole).toString();
          if(address.isEmpty())
          {
              // If this transaction has no associated address, exit
              return;
          }
          // Is address in address book? Address book can miss address when a transaction is
          // sent from outside the UI.
          int idx = addressBook->lookupAddress(address);
          if(idx != -1)
          {
              // Edit sending / receiving address
              QModelIndex modelIdx = addressBook->index(idx, 0, QModelIndex());
              // Determine type of address, launch appropriate editor dialog type
              QString type = modelIdx.data(AddressTableModel::TypeRole).toString();
  
              EditAddressDialog dlg(
                  type == AddressTableModel::Receive
                  ? EditAddressDialog::EditReceivingAddress
                  : EditAddressDialog::EditSendingAddress, this);
              dlg.setModel(addressBook);
              dlg.loadRow(idx);
              dlg.exec();
          }
          else
          {
              // Add sending address
              EditAddressDialog dlg(EditAddressDialog::NewSendingAddress,
                  this);
              dlg.setModel(addressBook);
              dlg.setAddress(address);
              dlg.exec();
          }
      }
  }
  
  void TransactionView::showDetails()
  {
      if(!transactionView->selectionModel())
          return;
      QModelIndexList selection = transactionView->selectionModel()->selectedRows();
      if(!selection.isEmpty())
      {
          TransactionDescDialog* dlg = new TransactionDescDialog(selection.at(0), this);
          dlg->setAttribute(Qt::WA_DeleteOnClose);
          dlg->show();
      }
  }
  
  void TransactionView::showAddressQRCode()
  {
      QList<QModelIndex> entries = GUIUtil::getEntryData(transactionView, 0);
      if (entries.empty()) {
          return;
      }
  
      QString strAddress = entries.at(0).data(TransactionTableModel::AddressRole).toString();
      QRDialog* dialog = new QRDialog(this);
      OptionsModel *model = new OptionsModel(nullptr, false);
  
      dialog->setModel(model);
      dialog->setAttribute(Qt::WA_DeleteOnClose);
      dialog->setInfo(tr("QR code"), "scc:"+strAddress, "", strAddress);
      dialog->show();
  }
  
  /** Compute sum of all selected transactions */
  void TransactionView::computeSum()
  {
      qint64 amount = 0;
      int nDisplayUnit = model->getOptionsModel()->getDisplayUnit();
      if(!transactionView->selectionModel())
          return;
      QModelIndexList selection = transactionView->selectionModel()->selectedRows();
  
      for (QModelIndex index : selection){
          amount += index.data(TransactionTableModel::AmountRole).toLongLong();
      }
      QString strAmount(BitcoinUnits::formatWithUnit(nDisplayUnit, amount, true, BitcoinUnits::separatorAlways));
      if (amount < 0) strAmount = "<span style='" + GUIUtil::getThemedStyleQString(GUIUtil::ThemedStyle::TS_ERROR) + "'>" + strAmount + "</span>";
      Q_EMIT trxAmount(strAmount);
  }
  
  void TransactionView::openThirdPartyTxUrl(QString url)
  {
      if(!transactionView || !transactionView->selectionModel())
          return;
      QModelIndexList selection = transactionView->selectionModel()->selectedRows(0);
      if(!selection.isEmpty())
           QDesktopServices::openUrl(QUrl::fromUserInput(url.replace("%s", selection.at(0).data(TransactionTableModel::TxHashRole).toString())));
  }
  
  QWidget *TransactionView::createDateRangeWidget()
  {
      // Create default dates in case nothing is persisted
      QString defaultDateFrom = QDate::currentDate().toString(PERSISTENCE_DATE_FORMAT);
      QString defaultDateTo = QDate::currentDate().addDays(1).toString(PERSISTENCE_DATE_FORMAT);
      QSettings settings;
  
      dateRangeWidget = new QFrame();
      dateRangeWidget->setFrameStyle(QFrame::Panel | QFrame::Raised);
      dateRangeWidget->setContentsMargins(1,1,1,1);
      QHBoxLayout *layout = new QHBoxLayout(dateRangeWidget);
      layout->setContentsMargins(0,0,0,0);
      layout->addSpacing(23);
      layout->addWidget(new QLabel(tr("Range:")));
  
      dateFrom = new QDateTimeEdit(this);
      dateFrom->setCalendarPopup(true);
      dateFrom->setMinimumWidth(100);
      // Load persisted FROM date
      dateFrom->setDate(QDate::fromString(settings.value("transactionDateFrom", defaultDateFrom).toString(), PERSISTENCE_DATE_FORMAT));
  
      layout->addWidget(dateFrom);
      layout->addWidget(new QLabel(tr("to")));
  
      dateTo = new QDateTimeEdit(this);
      dateTo->setCalendarPopup(true);
      dateTo->setMinimumWidth(100);
      // Load persisted TO date
      dateTo->setDate(QDate::fromString(settings.value("transactionDateTo", defaultDateTo).toString(), PERSISTENCE_DATE_FORMAT));
  
      layout->addWidget(dateTo);
      layout->addStretch();
  
      // Hide by default
      dateRangeWidget->setVisible(false);
  
      // Notify on change
      connect(dateFrom, SIGNAL(dateChanged(QDate)), this, SLOT(dateRangeChanged()));
      connect(dateTo, SIGNAL(dateChanged(QDate)), this, SLOT(dateRangeChanged()));
  
      updateCalendarWidgets();
  
      return dateRangeWidget;
  }
  
  void TransactionView::updateCalendarWidgets()
  {
      auto adjustWeekEndColors = [](QCalendarWidget* w) {
          QTextCharFormat format = w->weekdayTextFormat(Qt::Saturday);
          format.setForeground(QBrush(GUIUtil::getThemedQColor(GUIUtil::ThemedColor::DEFAULT), Qt::SolidPattern));
  
          w->setWeekdayTextFormat(Qt::Saturday, format);
          w->setWeekdayTextFormat(Qt::Sunday, format);
      };
  
      adjustWeekEndColors(dateFrom->calendarWidget());
      adjustWeekEndColors(dateTo->calendarWidget());
  }
  
  void TransactionView::dateRangeChanged()
  {
      if(!transactionProxyModel)
          return;
  
      // Persist new date range
      QSettings settings;
      settings.setValue("transactionDateFrom", dateFrom->date().toString(PERSISTENCE_DATE_FORMAT));
      settings.setValue("transactionDateTo", dateTo->date().toString(PERSISTENCE_DATE_FORMAT));
  
      transactionProxyModel->setDateRange(
              QDateTime(dateFrom->date()),
              QDateTime(dateTo->date()));
  }
  
  void TransactionView::focusTransaction(const QModelIndex &idx)
  {
      if(!transactionProxyModel)
          return;
      QModelIndex targetIdx = transactionProxyModel->mapFromSource(idx);
      transactionView->selectRow(targetIdx.row());
      computeSum();
      transactionView->scrollTo(targetIdx);
      transactionView->setCurrentIndex(targetIdx);
      transactionView->setFocus();
  }
  
  void TransactionView::focusTransaction(const uint256& txid)
  {
      if (!transactionProxyModel)
          return;
  
      const QModelIndexList results = this->model->getTransactionTableModel()->match(
          this->model->getTransactionTableModel()->index(0,0),
          TransactionTableModel::TxHashRole,
          QString::fromStdString(txid.ToString()), -1);
  
      transactionView->setFocus();
      transactionView->selectionModel()->clearSelection();
      for (const QModelIndex& index : results) {
          const QModelIndex targetIndex = transactionProxyModel->mapFromSource(index);
          transactionView->selectionModel()->select(
              targetIndex,
              QItemSelectionModel::Rows | QItemSelectionModel::Select);
          // Called once per destination to ensure all results are in view, unless
          // transactions are not ordered by (ascending or descending) date.
          transactionView->scrollTo(targetIndex);
          // scrollTo() does not scroll far enough the first time when transactions
          // are ordered by ascending date.
          if (index == results[0]) transactionView->scrollTo(targetIndex);
      }
  }
  
  // We override the virtual resizeEvent of the QWidget to adjust tables column
  // sizes as the tables width is proportional to the dialogs width.
  void TransactionView::resizeEvent(QResizeEvent* event)
  {
      QWidget::resizeEvent(event);
      columnResizingFixer->stretchColumnWidth(TransactionTableModel::ToAddress);
  }
  
  void TransactionView::changeEvent(QEvent* e)
  {
      if (e->type() == QEvent::StyleChange) {
          updateCalendarWidgets();
      }
  }
  
  // Need to override default Ctrl+C action for amount as default behaviour is just to copy DisplayRole text
  bool TransactionView::eventFilter(QObject *obj, QEvent *event)
  {
      if (event->type() == QEvent::KeyPress)
      {
          QKeyEvent *ke = static_cast<QKeyEvent *>(event);
          if (ke->key() == Qt::Key_C && ke->modifiers().testFlag(Qt::ControlModifier))
          {
               GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::TxPlainTextRole);
               return true;
          }
      }
      if (event->type() == QEvent::Show) {
          // Give the search field the first focus on startup
          static bool fGotFirstFocus = false;
          if (!fGotFirstFocus) {
              search_widget->setFocus();
              fGotFirstFocus = true;
          }
      }
      return QWidget::eventFilter(obj, event);
  }
  
  // show/hide column Watch-only
  void TransactionView::updateWatchOnlyColumn(bool fHaveWatchOnly)
  {
      watchOnlyWidget->setVisible(fHaveWatchOnly);
      transactionView->setColumnHidden(TransactionTableModel::Watchonly, !fHaveWatchOnly);
  }
  
  void TransactionView::updatePrivateSendVisibility()
  {
      bool fEnabled = CPrivateSendClientOptions::IsEnabled();
      // If PrivateSend gets enabled use "All" else "Most common"
      typeWidget->setCurrentIndex(fEnabled ? 0 : 1);
      // Hide all PrivateSend related filters
      QListView* typeList = qobject_cast<QListView*>(typeWidget->view());
      std::vector<int> vecRows{4, 5, 6, 7, 8};
      for (auto nRow : vecRows) {
          typeList->setRowHidden(nRow, !fEnabled);
      }
  }