addresswidget.cpp Example File

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  #include "adddialog.h"
  #include "addresswidget.h"

  #include <QtWidgets>

  AddressWidget::AddressWidget(QWidget *parent)
      : QTabWidget(parent)
  {
      table = new TableModel(this);
      newAddressTab = new NewAddressTab(this);
      connect(newAddressTab, &NewAddressTab::sendDetails,
          this, &AddressWidget::addEntry);

      addTab(newAddressTab, "Address Book");

      setupTabs();
  }

  void AddressWidget::showAddEntryDialog()
  {
      AddDialog aDialog;

      if (aDialog.exec()) {
          QString name = aDialog.nameText->text();
          QString address = aDialog.addressText->toPlainText();

          addEntry(name, address);
      }
  }

  void AddressWidget::addEntry(QString name, QString address)
  {
      QList<QPair<QString, QString> >list = table->getList();
      QPair<QString, QString> pair(name, address);

      if (!list.contains(pair)) {
          table->insertRows(0, 1, QModelIndex());

          QModelIndex index = table->index(0, 0, QModelIndex());
          table->setData(index, name, Qt::EditRole);
          index = table->index(0, 1, QModelIndex());
          table->setData(index, address, Qt::EditRole);
          removeTab(indexOf(newAddressTab));
      } else {
          QMessageBox::information(this, tr("Duplicate Name"),
              tr("The name \"%1\" already exists.").arg(name));
      }
  }

  void AddressWidget::editEntry()
  {
      QTableView *temp = static_cast<QTableView*>(currentWidget());
      QSortFilterProxyModel *proxy = static_cast<QSortFilterProxyModel*>(temp->model());
      QItemSelectionModel *selectionModel = temp->selectionModel();

      QModelIndexList indexes = selectionModel->selectedRows();
      QString name;
      QString address;
      int row = -1;

      foreach (QModelIndex index, indexes) {
          row = proxy->mapToSource(index).row();
          QModelIndex nameIndex = table->index(row, 0, QModelIndex());
          QVariant varName = table->data(nameIndex, Qt::DisplayRole);
          name = varName.toString();

          QModelIndex addressIndex = table->index(row, 1, QModelIndex());
          QVariant varAddr = table->data(addressIndex, Qt::DisplayRole);
          address = varAddr.toString();
      }

      AddDialog aDialog;
      aDialog.setWindowTitle(tr("Edit a Contact"));

      aDialog.nameText->setReadOnly(true);
      aDialog.nameText->setText(name);
      aDialog.addressText->setText(address);

      if (aDialog.exec()) {
          QString newAddress = aDialog.addressText->toPlainText();
          if (newAddress != address) {
              QModelIndex index = table->index(row, 1, QModelIndex());
              table->setData(index, newAddress, Qt::EditRole);
          }
      }
  }

  void AddressWidget::removeEntry()
  {
      QTableView *temp = static_cast<QTableView*>(currentWidget());
      QSortFilterProxyModel *proxy = static_cast<QSortFilterProxyModel*>(temp->model());
      QItemSelectionModel *selectionModel = temp->selectionModel();

      QModelIndexList indexes = selectionModel->selectedRows();

      foreach (QModelIndex index, indexes) {
          int row = proxy->mapToSource(index).row();
          table->removeRows(row, 1, QModelIndex());
      }

      if (table->rowCount(QModelIndex()) == 0) {
          insertTab(0, newAddressTab, "Address Book");
      }
  }

  void AddressWidget::setupTabs()
  {
      QStringList groups;
      groups << "ABC" << "DEF" << "GHI" << "JKL" << "MNO" << "PQR" << "STU" << "VW" << "XYZ";

      for (int i = 0; i < groups.size(); ++i) {
          QString str = groups.at(i);
          QString regExp = QString("^[%1].*").arg(str);

          proxyModel = new QSortFilterProxyModel(this);
          proxyModel->setSourceModel(table);
          proxyModel->setFilterRegExp(QRegExp(regExp, Qt::CaseInsensitive));
          proxyModel->setFilterKeyColumn(0);

          QTableView *tableView = new QTableView;
          tableView->setModel(proxyModel);

          tableView->setSelectionBehavior(QAbstractItemView::SelectRows);
          tableView->horizontalHeader()->setStretchLastSection(true);
          tableView->verticalHeader()->hide();
          tableView->setEditTriggers(QAbstractItemView::NoEditTriggers);
          tableView->setSelectionMode(QAbstractItemView::SingleSelection);

          tableView->setSortingEnabled(true);

          connect(tableView->selectionModel(),
              &QItemSelectionModel::selectionChanged,
              this, &AddressWidget::selectionChanged);

          addTab(tableView, str);
      }
  }

  void AddressWidget::readFromFile(const QString &fileName)
  {
      QFile file(fileName);

      if (!file.open(QIODevice::ReadOnly)) {
          QMessageBox::information(this, tr("Unable to open file"),
              file.errorString());
          return;
      }

      QList<QPair<QString, QString> > pairs = table->getList();
      QDataStream in(&file);
      in >> pairs;

      if (pairs.isEmpty()) {
          QMessageBox::information(this, tr("No contacts in file"),
                                   tr("The file you are attempting to open contains no contacts."));
      } else {
          for (int i=0; i<pairs.size(); ++i) {
              QPair<QString, QString> p = pairs.at(i);
              addEntry(p.first, p.second);
          }
      }
  }

  void AddressWidget::writeToFile(const QString &fileName)
  {
      QFile file(fileName);

      if (!file.open(QIODevice::WriteOnly)) {
          QMessageBox::information(this, tr("Unable to open file"), file.errorString());
          return;
      }

      QList<QPair<QString, QString> > pairs = table->getList();
      QDataStream out(&file);
      out << pairs;
  }