text: // Copyright (c) 2011-2013 The Bitcoin developers
  // Copyright (c) 2017 The PIVX developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "transactionfilterproxy.h"
  
  #include "transactionrecord.h"
  #include "transactiontablemodel.h"
  
  #include <cstdlib>
  
  #include <QDateTime>
  
  // Earliest date that can be represented (far in the past)
  const QDateTime TransactionFilterProxy::MIN_DATE = QDateTime::fromTime_t(0);
  // Last date that can be represented (far in the future)
  const QDateTime TransactionFilterProxy::MAX_DATE = QDateTime::fromTime_t(0xFFFFFFFF);
  
  TransactionFilterProxy::TransactionFilterProxy(QObject* parent) : QSortFilterProxyModel(parent),
                                                                    dateFrom(MIN_DATE),
                                                                    dateTo(MAX_DATE),
                                                                    addrPrefix(),
                                                                    typeFilter(COMMON_TYPES),
                                                                    watchOnlyFilter(WatchOnlyFilter_All),
                                                                    minAmount(0),
                                                                    limitRows(-1),
                                                                    showInactive(true),
                                                                    fHideOrphans(false)
  {
  }
  
  bool TransactionFilterProxy::filterAcceptsRow(int sourceRow, const QModelIndex& sourceParent) const
  {
      QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
  
      int type = index.data(TransactionTableModel::TypeRole).toInt();
      QDateTime datetime = index.data(TransactionTableModel::DateRole).toDateTime();
      bool involvesWatchAddress = index.data(TransactionTableModel::WatchonlyRole).toBool();
      QString address = index.data(TransactionTableModel::AddressRole).toString();
      QString label = index.data(TransactionTableModel::LabelRole).toString();
      qint64 amount = llabs(index.data(TransactionTableModel::AmountRole).toLongLong());
      int status = index.data(TransactionTableModel::StatusRole).toInt();
  
      if (!showInactive && status == TransactionStatus::Conflicted)
          return false;
      if (fHideOrphans && isOrphan(status, type))
          return false;
      if (!(TYPE(type) & typeFilter))
          return false;
      if (involvesWatchAddress && watchOnlyFilter == WatchOnlyFilter_No)
          return false;
      if (!involvesWatchAddress && watchOnlyFilter == WatchOnlyFilter_Yes)
          return false;
      if (datetime < dateFrom || datetime > dateTo)
          return false;
      if (!address.contains(addrPrefix, Qt::CaseInsensitive) && !label.contains(addrPrefix, Qt::CaseInsensitive))
          return false;
      if (amount < minAmount)
          return false;
  
      return true;
  }
  
  void TransactionFilterProxy::setDateRange(const QDateTime& from, const QDateTime& to)
  {
      this->dateFrom = from;
      this->dateTo = to;
      invalidateFilter();
  }
  
  void TransactionFilterProxy::setAddressPrefix(const QString& addrPrefix)
  {
      this->addrPrefix = addrPrefix;
      invalidateFilter();
  }
  
  void TransactionFilterProxy::setTypeFilter(quint32 modes)
  {
      this->typeFilter = modes;
      invalidateFilter();
  }
  
  void TransactionFilterProxy::setMinAmount(const CAmount& minimum)
  {
      this->minAmount = minimum;
      invalidateFilter();
  }
  
  void TransactionFilterProxy::setWatchOnlyFilter(WatchOnlyFilter filter)
  {
      this->watchOnlyFilter = filter;
      invalidateFilter();
  }
  
  void TransactionFilterProxy::setLimit(int limit)
  {
      this->limitRows = limit;
  }
  
  void TransactionFilterProxy::setShowInactive(bool showInactive)
  {
      this->showInactive = showInactive;
      invalidateFilter();
  }
  
  void TransactionFilterProxy::setHideOrphans(bool fHide)
  {
      this->fHideOrphans = fHide;
      invalidateFilter();
  }
  
  int TransactionFilterProxy::rowCount(const QModelIndex& parent) const
  {
      if (limitRows != -1) {
          return std::min(QSortFilterProxyModel::rowCount(parent), limitRows);
      } else {
          return QSortFilterProxyModel::rowCount(parent);
      }
  }
  
  bool TransactionFilterProxy::isOrphan(const int status, const int type)
  {
      return ( (type == TransactionRecord::Generated || type == TransactionRecord::StakeMint ||
              type == TransactionRecord::StakezLUM || type == TransactionRecord::MNReward)
              && (status == TransactionStatus::Conflicted || status == TransactionStatus::NotAccepted) );
  }
  