text: #include "optionsdialog.h"
  #include "ui_optionsdialog.h"
  
  #include "bitcoinunits.h"
  #include "monitoreddatamapper.h"
  #include "netbase.h"
  #include "optionsmodel.h"
  
  #include <QDir>
  #include <QIntValidator>
  #include <QLocale>
  #include <QMessageBox>
  #include <QRegExp>
  #include <QRegExpValidator>
  
  OptionsDialog::OptionsDialog(QWidget *parent) :
      QDialog(parent),
      ui(new Ui::OptionsDialog),
      model(0),
      mapper(0),
      fRestartWarningDisplayed_Proxy(false),
      fRestartWarningDisplayed_Lang(false),
      fProxyIpValid(true)
  {
      ui->setupUi(this);
  
      /* Network elements init */
  #ifndef USE_UPNP
      ui->mapPortUpnp->setEnabled(false);
  #endif
  
      ui->proxyIp->setEnabled(false);
      ui->proxyPort->setEnabled(false);
      ui->proxyPort->setValidator(new QIntValidator(1, 65535, this));
  
      ui->socksVersion->setEnabled(false);
      ui->socksVersion->addItem("5", 5);
      ui->socksVersion->addItem("4", 4);
      ui->socksVersion->setCurrentIndex(0);
  
      connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->proxyIp, SLOT(setEnabled(bool)));
      connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->proxyPort, SLOT(setEnabled(bool)));
      connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->socksVersion, SLOT(setEnabled(bool)));
      connect(ui->connectSocks, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning_Proxy()));
  
      ui->proxyIp->installEventFilter(this);
  
      /* Window elements init */
  #ifdef Q_OS_MAC
      ui->tabWindow->setVisible(false);
  #endif
  
      /* Display elements init */
      QDir translations(":translations");
      ui->lang->addItem(QString("(") + tr("default") + QString(")"), QVariant(""));
      foreach(const QString &langStr, translations.entryList())
      {
          QLocale locale(langStr);
  
          /** check if the locale name consists of 2 parts (language_country) */
          if(langStr.contains("_"))
          {
  #if QT_VERSION >= 0x040800
              /** display language strings as "native language - native country (locale name)", e.g. "Deutsch - Deutschland (de)" */
              ui->lang->addItem(locale.nativeLanguageName() + QString(" - ") + locale.nativeCountryName() + QString(" (") + langStr + QString(")"), QVariant(langStr));
  #else
              /** display language strings as "language - country (locale name)", e.g. "German - Germany (de)" */
              ui->lang->addItem(QLocale::languageToString(locale.language()) + QString(" - ") + QLocale::countryToString(locale.country()) + QString(" (") + langStr + QString(")"), QVariant(langStr));
  #endif
          }
          else
          {
  #if QT_VERSION >= 0x040800
              /** display language strings as "native language (locale name)", e.g. "Deutsch (de)" */
              ui->lang->addItem(locale.nativeLanguageName() + QString(" (") + langStr + QString(")"), QVariant(langStr));
  #else
              /** display language strings as "language (locale name)", e.g. "German (de)" */
              ui->lang->addItem(QLocale::languageToString(locale.language()) + QString(" (") + langStr + QString(")"), QVariant(langStr));
  #endif
          }
      }
  
      ui->unit->setModel(new BitcoinUnits(this));
  
      /* Widget-to-option mapper */
      mapper = new MonitoredDataMapper(this);
      mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
      mapper->setOrientation(Qt::Vertical);
  
      /* enable apply button when data modified */
      connect(mapper, SIGNAL(viewModified()), this, SLOT(enableApplyButton()));
      /* disable apply button when new data loaded */
      connect(mapper, SIGNAL(currentIndexChanged(int)), this, SLOT(disableApplyButton()));
      /* setup/change UI elements when proxy IP is invalid/valid */
      connect(this, SIGNAL(proxyIpValid(QValidatedLineEdit *, bool)), this, SLOT(handleProxyIpValid(QValidatedLineEdit *, bool)));
  }
  
  OptionsDialog::~OptionsDialog()
  {
      delete ui;
  }
  
  void OptionsDialog::setModel(OptionsModel *model)
  {
      this->model = model;
  
      if(model)
      {
          connect(model, SIGNAL(displayUnitChanged(int)), this, SLOT(updateDisplayUnit()));
  
          mapper->setModel(model);
          setMapper();
          mapper->toFirst();
      }
  
      /* update the display unit, to not use the default ("BTC") */
      updateDisplayUnit();
  
      /* warn only when language selection changes by user action (placed here so init via mapper doesn't trigger this) */
      connect(ui->lang, SIGNAL(valueChanged()), this, SLOT(showRestartWarning_Lang()));
  
      /* disable apply button after settings are loaded as there is nothing to save */
      disableApplyButton();
  }
  
  void OptionsDialog::setMapper()
  {
      /* Main */
      mapper->addMapping(ui->transactionFee, OptionsModel::Fee);
      mapper->addMapping(ui->reserveBalance, OptionsModel::ReserveBalance);
      mapper->addMapping(ui->bitcoinAtStartup, OptionsModel::StartAtStartup);
  
      /* Network */
      mapper->addMapping(ui->mapPortUpnp, OptionsModel::MapPortUPnP);
  
      mapper->addMapping(ui->connectSocks, OptionsModel::ProxyUse);
      mapper->addMapping(ui->proxyIp, OptionsModel::ProxyIP);
      mapper->addMapping(ui->proxyPort, OptionsModel::ProxyPort);
      mapper->addMapping(ui->socksVersion, OptionsModel::ProxySocksVersion);
  
      /* Window */
  #ifndef Q_OS_MAC
      mapper->addMapping(ui->minimizeToTray, OptionsModel::MinimizeToTray);
      mapper->addMapping(ui->minimizeOnClose, OptionsModel::MinimizeOnClose);
  #endif
  
      /* Display */
      mapper->addMapping(ui->lang, OptionsModel::Language);
      mapper->addMapping(ui->unit, OptionsModel::DisplayUnit);
      mapper->addMapping(ui->displayAddresses, OptionsModel::DisplayAddresses);
      mapper->addMapping(ui->coinControlFeatures, OptionsModel::CoinControlFeatures);
  }
  
  void OptionsDialog::enableApplyButton()
  {
      ui->applyButton->setEnabled(true);
  }
  
  void OptionsDialog::disableApplyButton()
  {
      ui->applyButton->setEnabled(false);
  }
  
  void OptionsDialog::enableSaveButtons()
  {
      /* prevent enabling of the save buttons when data modified, if there is an invalid proxy address present */
      if(fProxyIpValid)
          setSaveButtonState(true);
  }
  
  void OptionsDialog::disableSaveButtons()
  {
      setSaveButtonState(false);
  }
  
  void OptionsDialog::setSaveButtonState(bool fState)
  {
      ui->applyButton->setEnabled(fState);
      ui->okButton->setEnabled(fState);
  }
  
  void OptionsDialog::on_okButton_clicked()
  {
      mapper->submit();
      accept();
  }
  
  void OptionsDialog::on_cancelButton_clicked()
  {
      reject();
  }
  
  void OptionsDialog::on_applyButton_clicked()
  {
      mapper->submit();
      disableApplyButton();
  }
  
  void OptionsDialog::showRestartWarning_Proxy()
  {
      if(!fRestartWarningDisplayed_Proxy)
      {
          QMessageBox::warning(this, tr("Warning"), tr("This setting will take effect after restarting iBank."), QMessageBox::Ok);
          fRestartWarningDisplayed_Proxy = true;
      }
  }
  
  void OptionsDialog::showRestartWarning_Lang()
  {
      if(!fRestartWarningDisplayed_Lang)
      {
          QMessageBox::warning(this, tr("Warning"), tr("This setting will take effect after restarting iBank."), QMessageBox::Ok);
          fRestartWarningDisplayed_Lang = true;
      }
  }
  
  void OptionsDialog::updateDisplayUnit()
  {
      if(model)
      {
          /* Update transactionFee with the current unit */
          ui->transactionFee->setDisplayUnit(model->getDisplayUnit());
      }
  }
  
  void OptionsDialog::handleProxyIpValid(QValidatedLineEdit *object, bool fState)
  {
      // this is used in a check before re-enabling the save buttons
      fProxyIpValid = fState;
  
      if(fProxyIpValid)
      {
          enableSaveButtons();
          ui->statusLabel->clear();
      }
      else
      {
          disableSaveButtons();
          object->setValid(fProxyIpValid);
          ui->statusLabel->setStyleSheet("QLabel { color: red; }");
          ui->statusLabel->setText(tr("The supplied proxy address is invalid."));
      }
  }
  
  bool OptionsDialog::eventFilter(QObject *object, QEvent *event)
  {
      if(event->type() == QEvent::FocusOut)
      {
          if(object == ui->proxyIp)
          {
              CService addr;
              /* Check proxyIp for a valid IPv4/IPv6 address and emit the proxyIpValid signal */
              emit proxyIpValid(ui->proxyIp, LookupNumeric(ui->proxyIp->text().toStdString().c_str(), addr));
          }
      }
      return QDialog::eventFilter(object, event);
  }
  