text: // Copyright (c) 2011-2014 The Bitcoin developers
  // Copyright (c) 2014-2015 The Dash developers
  // Copyright (c) 2015-2017 The PIVX developers
  // Copyright (c) 2018 The mtap developers
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #if defined(HAVE_CONFIG_H)
  #include "config/mtap-config.h"
  #endif
  
  #include "addressbookpage.h"
  #include "ui_addressbookpage.h"
  
  #include "addresstablemodel.h"
  #include "bitcoingui.h"
  #include "csvmodelwriter.h"
  #include "editaddressdialog.h"
  #include "guiutil.h"
  
  #include <QIcon>
  #include <QMenu>
  #include <QMessageBox>
  #include <QSortFilterProxyModel>
  
  AddressBookPage::AddressBookPage(Mode mode, Tabs tab, QWidget* parent) : QDialog(parent),
                                                                           ui(new Ui::AddressBookPage),
                                                                           model(0),
                                                                           mode(mode),
                                                                           tab(tab)
  {
      ui->setupUi(this);
  
  #ifdef Q_OS_MAC // Icons on push buttons are very uncommon on Mac
      ui->newAddress->setIcon(QIcon());
      ui->copyAddress->setIcon(QIcon());
      ui->deleteAddress->setIcon(QIcon());
      ui->exportButton->setIcon(QIcon());
  #endif
  
      switch (mode) {
      case ForSelection:
          switch (tab) {
          case SendingTab:
              setWindowTitle(tr("Choose the address to send coins to"));
              break;
          case ReceivingTab:
              setWindowTitle(tr("Choose the address to receive coins with"));
              break;
          }
          connect(ui->tableView, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(accept()));
          ui->tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);
          ui->tableView->setFocus();
          ui->closeButton->setText(tr("C&hoose"));
          ui->exportButton->hide();
          break;
      case ForEditing:
          switch (tab) {
          case SendingTab:
              setWindowTitle(tr("Sending addresses"));
              break;
          case ReceivingTab:
              setWindowTitle(tr("Receiving addresses"));
              break;
          }
          break;
      }
      switch (tab) {
      case SendingTab:
          ui->labelExplanation->setText(tr("These are your mtap addresses for sending payments. Always check the amount and the receiving address before sending coins."));
          ui->deleteAddress->setVisible(true);
          break;
      case ReceivingTab:
          ui->labelExplanation->setText(tr("These are your mtap addresses for receiving payments. It is recommended to use a new receiving address for each transaction."));
          ui->deleteAddress->setVisible(false);
          break;
      }
  
      // Context menu actions
      QAction* copyAddressAction = new QAction(tr("&Copy Address"), this);
      QAction* copyLabelAction = new QAction(tr("Copy &Label"), this);
      QAction* editAction = new QAction(tr("&Edit"), this);
      deleteAction = new QAction(ui->deleteAddress->text(), this);
  
      // Build context menu
      contextMenu = new QMenu();
      contextMenu->addAction(copyAddressAction);
      contextMenu->addAction(copyLabelAction);
      contextMenu->addAction(editAction);
      if (tab == SendingTab)
          contextMenu->addAction(deleteAction);
      contextMenu->addSeparator();
  
      // Connect signals for context menu actions
      connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(on_copyAddress_clicked()));
      connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(onCopyLabelAction()));
      connect(editAction, SIGNAL(triggered()), this, SLOT(onEditAction()));
      connect(deleteAction, SIGNAL(triggered()), this, SLOT(on_deleteAddress_clicked()));
  
      connect(ui->tableView, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextualMenu(QPoint)));
  
      connect(ui->closeButton, SIGNAL(clicked()), this, SLOT(accept()));
  }
  
  AddressBookPage::~AddressBookPage()
  {
      delete ui;
  }
  
  void AddressBookPage::setModel(AddressTableModel* model)
  {
      this->model = model;
      if (!model)
          return;
  
      proxyModel = new QSortFilterProxyModel(this);
      proxyModel->setSourceModel(model);
      proxyModel->setDynamicSortFilter(true);
      proxyModel->setSortCaseSensitivity(Qt::CaseInsensitive);
      proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
      switch (tab) {
      case ReceivingTab:
          // Receive filter
          proxyModel->setFilterRole(AddressTableModel::TypeRole);
          proxyModel->setFilterFixedString(AddressTableModel::Receive);
          break;
      case SendingTab:
          // Send filter
          proxyModel->setFilterRole(AddressTableModel::TypeRole);
          proxyModel->setFilterFixedString(AddressTableModel::Send);
          break;
      }
      ui->tableView->setModel(proxyModel);
      ui->tableView->sortByColumn(0, Qt::AscendingOrder);
  
  // Set column widths
  #if QT_VERSION < 0x050000
      ui->tableView->horizontalHeader()->setResizeMode(AddressTableModel::Label, QHeaderView::Stretch);
      ui->tableView->horizontalHeader()->setResizeMode(AddressTableModel::Address, QHeaderView::ResizeToContents);
  #else
      ui->tableView->horizontalHeader()->setSectionResizeMode(AddressTableModel::Label, QHeaderView::Stretch);
      ui->tableView->horizontalHeader()->setSectionResizeMode(AddressTableModel::Address, QHeaderView::ResizeToContents);
  #endif
  
      connect(ui->tableView->selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)),
          this, SLOT(selectionChanged()));
  
      // Select row for newly created address
      connect(model, SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(selectNewAddress(QModelIndex, int, int)));
  
      selectionChanged();
  }
  
  void AddressBookPage::on_copyAddress_clicked()
  {
      GUIUtil::copyEntryData(ui->tableView, AddressTableModel::Address);
  }
  
  void AddressBookPage::onCopyLabelAction()
  {
      GUIUtil::copyEntryData(ui->tableView, AddressTableModel::Label);
  }
  
  void AddressBookPage::onEditAction()
  {
      if (!model)
          return;
  
      if (!ui->tableView->selectionModel())
          return;
      QModelIndexList indexes = ui->tableView->selectionModel()->selectedRows();
      if (indexes.isEmpty())
          return;
  
      EditAddressDialog dlg(
          tab == SendingTab ?
              EditAddressDialog::EditSendingAddress :
              EditAddressDialog::EditReceivingAddress,
          this);
      dlg.setModel(model);
      QModelIndex origIndex = proxyModel->mapToSource(indexes.at(0));
      dlg.loadRow(origIndex.row());
      dlg.exec();
  }
  
  void AddressBookPage::on_newAddress_clicked()
  {
      if (!model)
          return;
  
      EditAddressDialog dlg(
          tab == SendingTab ?
              EditAddressDialog::NewSendingAddress :
              EditAddressDialog::NewReceivingAddress,
          this);
      dlg.setModel(model);
      if (dlg.exec()) {
          newAddressToSelect = dlg.getAddress();
      }
  }
  
  void AddressBookPage::on_deleteAddress_clicked()
  {
      QTableView* table = ui->tableView;
      if (!table->selectionModel())
          return;
  
      QModelIndexList indexes = table->selectionModel()->selectedRows();
      if (!indexes.isEmpty()) {
          table->model()->removeRow(indexes.at(0).row());
      }
  }
  
  void AddressBookPage::selectionChanged()
  {
      // Set button states based on selected tab and selection
      QTableView* table = ui->tableView;
      if (!table->selectionModel())
          return;
  
      if (table->selectionModel()->hasSelection()) {
          switch (tab) {
          case SendingTab:
              // In sending tab, allow deletion of selection
              ui->deleteAddress->setEnabled(true);
              ui->deleteAddress->setVisible(true);
              deleteAction->setEnabled(true);
              break;
          case ReceivingTab:
              // Deleting receiving addresses, however, is not allowed
              ui->deleteAddress->setEnabled(false);
              ui->deleteAddress->setVisible(false);
              deleteAction->setEnabled(false);
              break;
          }
          ui->copyAddress->setEnabled(true);
      } else {
          ui->deleteAddress->setEnabled(false);
          ui->copyAddress->setEnabled(false);
      }
  }
  
  void AddressBookPage::done(int retval)
  {
      QTableView* table = ui->tableView;
      if (!table->selectionModel() || !table->model())
          return;
  
      // Figure out which address was selected, and return it
      QModelIndexList indexes = table->selectionModel()->selectedRows(AddressTableModel::Address);
  
      foreach (QModelIndex index, indexes) {
          QVariant address = table->model()->data(index);
          returnValue = address.toString();
      }
  
      if (returnValue.isEmpty()) {
          // If no address entry selected, return rejected
          retval = Rejected;
      }
  
      QDialog::done(retval);
  }
  
  void AddressBookPage::on_exportButton_clicked()
  {
      // CSV is currently the only supported format
      QString filename = GUIUtil::getSaveFileName(this,
          tr("Export Address List"), QString(),
          tr("Comma separated file (*.csv)"), NULL);
  
      if (filename.isNull())
          return;
  
      CSVModelWriter writer(filename);
  
      // name, column, role
      writer.setModel(proxyModel);
      writer.addColumn("Label", AddressTableModel::Label, Qt::EditRole);
      writer.addColumn("Address", AddressTableModel::Address, Qt::EditRole);
  
      if (!writer.write()) {
          QMessageBox::critical(this, tr("Exporting Failed"),
              tr("There was an error trying to save the address list to %1. Please try again.").arg(filename));
      }
  }
  
  void AddressBookPage::contextualMenu(const QPoint& point)
  {
      QModelIndex index = ui->tableView->indexAt(point);
      if (index.isValid()) {
          contextMenu->exec(QCursor::pos());
      }
  }
  
  void AddressBookPage::selectNewAddress(const QModelIndex& parent, int begin, int /*end*/)
  {
      QModelIndex idx = proxyModel->mapFromSource(model->index(begin, AddressTableModel::Address, parent));
      if (idx.isValid() && (idx.data(Qt::EditRole).toString() == newAddressToSelect)) {
          // Select row of newly created address, once
          ui->tableView->setFocus();
          ui->tableView->selectRow(idx.row());
          newAddressToSelect.clear();
      }
  }
  