text: #include "transactionview.h"
  
  #include "transactionfilterproxy.h"
  #include "transactionrecord.h"
  #include "walletmodel.h"
  #include "addresstablemodel.h"
  #include "transactiontablemodel.h"
  #include "bitcoinunits.h"
  #include "csvmodelwriter.h"
  #include "transactiondescdialog.h"
  #include "editaddressdialog.h"
  #include "optionsmodel.h"
  #include "guiutil.h"
  
  #include <QScrollBar>
  #include <QComboBox>
  #include <QDoubleValidator>
  #include <QHBoxLayout>
  #include <QVBoxLayout>
  #include <QLineEdit>
  #include <QTableView>
  #include <QHeaderView>
  #include <QPushButton>
  #include <QMessageBox>
  #include <QPoint>
  #include <QMenu>
  #include <QApplication>
  #include <QClipboard>
  #include <QLabel>
  #include <QDateTimeEdit>
  
  TransactionView::TransactionView(QWidget *parent) :
      QWidget(parent), model(0), transactionProxyModel(0),
      transactionView(0)
  {
      // Build filter row
      setContentsMargins(0,0,0,0);
  
      QHBoxLayout *hlayout = new QHBoxLayout();
      hlayout->setContentsMargins(0,0,0,0);
  #ifdef Q_OS_MAC
      hlayout->setSpacing(5);
      hlayout->addSpacing(26);
  #else
      hlayout->setSpacing(0);
      hlayout->addSpacing(23);
  #endif
  
      dateWidget = new QComboBox(this);
  #ifdef Q_OS_MAC
      dateWidget->setFixedWidth(121);
  #else
      dateWidget->setFixedWidth(120);
  #endif
      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);
      hlayout->addWidget(dateWidget);
  
      typeWidget = new QComboBox(this);
  #ifdef Q_OS_MAC
      typeWidget->setFixedWidth(121);
  #else
      typeWidget->setFixedWidth(120);
  #endif
  
      typeWidget->addItem(tr("All"), TransactionFilterProxy::ALL_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(tr("To yourself"), TransactionFilterProxy::TYPE(TransactionRecord::SendToSelf));
      typeWidget->addItem(tr("Mined"), TransactionFilterProxy::TYPE(TransactionRecord::Generated));
      typeWidget->addItem(tr("Other"), TransactionFilterProxy::TYPE(TransactionRecord::Other));
  
      hlayout->addWidget(typeWidget);
  
      addressWidget = new QLineEdit(this);
  #if QT_VERSION >= 0x040700
      /* Do not move this to the XML file, Qt before 4.7 will choke on it */
      addressWidget->setPlaceholderText(tr("Enter address or label to search"));
  #endif
      hlayout->addWidget(addressWidget);
  
      amountWidget = new QLineEdit(this);
  #if QT_VERSION >= 0x040700
      /* Do not move this to the XML file, Qt before 4.7 will choke on it */
      amountWidget->setPlaceholderText(tr("Min amount"));
  #endif
  #ifdef Q_OS_MAC
      amountWidget->setFixedWidth(97);
  #else
      amountWidget->setFixedWidth(100);
  #endif
      amountWidget->setValidator(new QDoubleValidator(0, 1e20, 8, this));
      hlayout->addWidget(amountWidget);
  
      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);
      int width = view->verticalScrollBar()->sizeHint().width();
      // Cover scroll bar width with spacing
  #ifdef Q_OS_MAC
      hlayout->addSpacing(width+2);
  #else
      hlayout->addSpacing(width);
  #endif
      // Always show scroll bar
      view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
      view->setTabKeyNavigation(false);
      view->setContextMenuPolicy(Qt::CustomContextMenu);
  
      transactionView = view;
  
      // 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);
      QAction *copyTxIDAction = new QAction(tr("Copy transaction ID"), this);
      QAction *editLabelAction = new QAction(tr("Edit label"), this);
      QAction *showDetailsAction = new QAction(tr("Show transaction details"), this);
  
      contextMenu = new QMenu();
      contextMenu->addAction(copyAddressAction);
      contextMenu->addAction(copyLabelAction);
      contextMenu->addAction(copyAmountAction);
      contextMenu->addAction(copyTxIDAction);
      contextMenu->addAction(editLabelAction);
      contextMenu->addAction(showDetailsAction);
  
      // Connect actions
      connect(dateWidget, SIGNAL(activated(int)), this, SLOT(chooseDate(int)));
      connect(typeWidget, SIGNAL(activated(int)), this, SLOT(chooseType(int)));
      connect(addressWidget, SIGNAL(textChanged(QString)), this, SLOT(changedPrefix(QString)));
      connect(amountWidget, SIGNAL(textChanged(QString)), this, SLOT(changedAmount(QString)));
  
      connect(view, SIGNAL(doubleClicked(QModelIndex)), this, SIGNAL(doubleClicked(QModelIndex)));
      connect(view, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextualMenu(QPoint)));
  
      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(editLabelAction, SIGNAL(triggered()), this, SLOT(editLabel()));
      connect(showDetailsAction, SIGNAL(triggered()), this, SLOT(showDetails()));
  }
  
  void TransactionView::setModel(WalletModel *model)
  {
      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->setStyleSheet("QTableView {background: transparent; border-width:1;}");
  
          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->horizontalHeader()->resizeSection(
                  TransactionTableModel::Status, 23);
          transactionView->horizontalHeader()->resizeSection(
                  TransactionTableModel::Date, 120);
          transactionView->horizontalHeader()->resizeSection(
                  TransactionTableModel::Type, 120);
          transactionView->horizontalHeader()->setResizeMode(
                  TransactionTableModel::ToAddress, QHeaderView::Stretch);
          transactionView->horizontalHeader()->resizeSection(
                  TransactionTableModel::Amount, 100);
          transactionView->horizontalHeader()->setStyleSheet( "QHeaderView::section { background-color: #1D66A8; color:white; border-bottom: 1px solid black; border-width: 1;}" );
  
      }
  }
  
  void TransactionView::chooseDate(int idx)
  {
      if(!transactionProxyModel)
          return;
      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, 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;
      }
  }
  
  void TransactionView::chooseType(int idx)
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setTypeFilter(
          typeWidget->itemData(idx).toInt());
  }
  
  void TransactionView::changedPrefix(const QString &prefix)
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setAddressPrefix(prefix);
  }
  
  void TransactionView::changedAmount(const QString &amount)
  {
      if(!transactionProxyModel)
          return;
      qint64 amount_parsed = 0;
      if(BitcoinUnits::parse(model->getOptionsModel()->getDisplayUnit(), amount, &amount_parsed))
      {
          transactionProxyModel->setMinAmount(amount_parsed);
      }
      else
      {
          transactionProxyModel->setMinAmount(0);
      }
  }
  
  void TransactionView::exportClicked()
  {
      // CSV is currently the only supported format
      QString filename = GUIUtil::getSaveFileName(
              this,
              tr("Export Transaction Data"), QString(),
              tr("Comma separated file (*.csv)"));
  
      if (filename.isNull()) return;
  
      CSVModelWriter writer(filename);
  
      // name, column, role
      writer.setModel(transactionProxyModel);
      writer.addColumn(tr("Confirmed"), 0, TransactionTableModel::ConfirmedRole);
      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(tr("Amount"), 0, TransactionTableModel::FormattedAmountRole);
      writer.addColumn(tr("ID"), 0, TransactionTableModel::TxIDRole);
  
      if(!writer.write())
      {
          QMessageBox::critical(this, tr("Error exporting"), tr("Could not write to file %1.").arg(filename),
                                QMessageBox::Abort, QMessageBox::Abort);
      }
  }
  
  void TransactionView::contextualMenu(const QPoint &point)
  {
      QModelIndex index = transactionView->indexAt(point);
      if(index.isValid())
      {
          contextMenu->exec(QCursor::pos());
      }
  }
  
  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::TxIDRole);
  }
  
  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(selection.at(0));
          dlg.exec();
      }
  }
  
  QWidget *TransactionView::createDateRangeWidget()
  {
      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->setDisplayFormat("dd/MM/yy");
      dateFrom->setCalendarPopup(true);
      dateFrom->setMinimumWidth(100);
      dateFrom->setDate(QDate::currentDate().addDays(-7));
      layout->addWidget(dateFrom);
      layout->addWidget(new QLabel(tr("to")));
  
      dateTo = new QDateTimeEdit(this);
      dateTo->setDisplayFormat("dd/MM/yy");
      dateTo->setCalendarPopup(true);
      dateTo->setMinimumWidth(100);
      dateTo->setDate(QDate::currentDate());
      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()));
  
      return dateRangeWidget;
  }
  
  void TransactionView::dateRangeChanged()
  {
      if(!transactionProxyModel)
          return;
      transactionProxyModel->setDateRange(
              QDateTime(dateFrom->date()),
              QDateTime(dateTo->date()).addDays(1));
  }
  
  void TransactionView::focusTransaction(const QModelIndex &idx)
  {
      if(!transactionProxyModel)
          return;
      QModelIndex targetIdx = transactionProxyModel->mapFromSource(idx);
      transactionView->scrollTo(targetIdx);
      transactionView->setCurrentIndex(targetIdx);
      transactionView->setFocus();
  }
  