text: // Copyright (c) 2011-2013 The Bitcoin developers
  // Copyright (c) 2015-2017 The PIVX developers
  // Copyright (c) 2017-2018 The putin & Bitfineon 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/putin-config.h"
  #endif
  
  #include "optionsdialog.h"
  #include "ui_optionsdialog.h"
  
  #include "bitcoinunits.h"
  #include "guiutil.h"
  #include "obfuscation.h"
  #include "optionsmodel.h"
  
  #include "main.h" // for MAX_SCRIPTCHECK_THREADS
  #include "netbase.h"
  #include "txdb.h" // for -dbcache defaults
  
  #ifdef ENABLE_WALLET
  #include "wallet.h" // for CWallet::minTxFee
  #endif
  
  #include <boost/thread.hpp>
  
  #include <QDataWidgetMapper>
  #include <QDir>
  #include <QIntValidator>
  #include <QLocale>
  #include <QMessageBox>
  #include <QTimer>
  
  OptionsDialog::OptionsDialog(QWidget* parent, bool enableWallet) : QDialog(parent, Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowCloseButtonHint),
                                                                     ui(new Ui::OptionsDialog),
                                                                     model(0),
                                                                     mapper(0),
                                                                     fProxyIpValid(true)
  {
      ui->setupUi(this);
      GUIUtil::restoreWindowGeometry("nOptionsDialogWindow", this->size(), this);
  
      /* Main elements init */
      ui->databaseCache->setMinimum(nMinDbCache);
      ui->databaseCache->setMaximum(nMaxDbCache);
      ui->threadsScriptVerif->setMinimum(-(int)boost::thread::hardware_concurrency());
      ui->threadsScriptVerif->setMaximum(MAX_SCRIPTCHECK_THREADS);
  
  /* 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));
  
      connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->proxyIp, SLOT(setEnabled(bool)));
      connect(ui->connectSocks, SIGNAL(toggled(bool)), ui->proxyPort, SLOT(setEnabled(bool)));
  
      ui->proxyIp->installEventFilter(this);
      ui->proxyPort->installEventFilter(this);
  
  /* Window elements init */
  #ifdef Q_OS_MAC
      /* remove Window tab on Mac */
      ui->tabWidget->removeTab(ui->tabWidget->indexOf(ui->tabWindow));
  #endif
  
      /* remove Wallet tab in case of -disablewallet */
      if (!enableWallet) {
          ui->tabWidget->removeTab(ui->tabWidget->indexOf(ui->tabWallet));
      }
  
      /* Display elements init */
  
      /* Number of displayed decimal digits selector */
      QString digits;
      for (int index = 2; index <= 8; index++) {
          digits.setNum(index);
          ui->digits->addItem(digits, digits);
      }
      
      /* Theme selector static themes */
      ui->theme->addItem(QString("Default"), QVariant("default"));
  
      /* Preferred Zerocoin Denominations */
      ui->preferredDenom->addItem(QString(tr("Any")), QVariant("0"));
      ui->preferredDenom->addItem(QString("1"), QVariant("1"));
      ui->preferredDenom->addItem(QString("5"), QVariant("5"));
      ui->preferredDenom->addItem(QString("10"), QVariant("10"));
      ui->preferredDenom->addItem(QString("50"), QVariant("50"));
      ui->preferredDenom->addItem(QString("100"), QVariant("100"));
      ui->preferredDenom->addItem(QString("500"), QVariant("500"));
      ui->preferredDenom->addItem(QString("1000"), QVariant("1000"));
      ui->preferredDenom->addItem(QString("5000"), QVariant("5000"));
  
      /* Theme selector external themes */
      boost::filesystem::path pathAddr = GetDataDir() / "themes";
      QDir dir(pathAddr.string().c_str());
      dir.setFilter(QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot);
      QFileInfoList list = dir.entryInfoList();
  
      for (int i = 0; i < list.size(); ++i) {
          QFileInfo fileInfo = list.at(i);
          ui->theme->addItem(fileInfo.fileName(), QVariant(fileInfo.fileName()));
      }
  
      /* Language selector */
      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
          }
      }
  #if QT_VERSION >= 0x040700
      ui->thirdPartyTxUrls->setPlaceholderText("https://example.com/tx/%s");
  #endif
  
      ui->unit->setModel(new BitcoinUnits(this));
  
      /* Widget-to-option mapper */
      mapper = new QDataWidgetMapper(this);
      mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
      mapper->setOrientation(Qt::Vertical);
  
      /* setup/change UI elements when proxy IP is invalid/valid */
      connect(this, SIGNAL(proxyIpChecks(QValidatedLineEdit*, QLineEdit*)), this, SLOT(doProxyIpChecks(QValidatedLineEdit*, QLineEdit*)));
  }
  
  OptionsDialog::~OptionsDialog()
  {
      GUIUtil::saveWindowGeometry("nOptionsDialogWindow", this);
      delete ui;
  }
  
  void OptionsDialog::setModel(OptionsModel* model)
  {
      this->model = model;
  
      if (model) {
          /* check if client restart is needed and show persistent message */
          if (model->isRestartRequired())
              showRestartWarning(true);
  
          QString strLabel = model->getOverriddenByCommandLine();
          if (strLabel.isEmpty())
              strLabel = tr("none");
          ui->overriddenByCommandLineLabel->setText(strLabel);
  
          mapper->setModel(model);
          setMapper();
          mapper->toFirst();
      }
  
      /* warn when one of the following settings changes by user action (placed here so init via mapper doesn't trigger them) */
  
      /* Main */
      connect(ui->databaseCache, SIGNAL(valueChanged(int)), this, SLOT(showRestartWarning()));
      connect(ui->threadsScriptVerif, SIGNAL(valueChanged(int)), this, SLOT(showRestartWarning()));
      /* Wallet */
      connect(ui->spendZeroConfChange, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning()));
      /* Network */
      connect(ui->allowIncoming, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning()));
      connect(ui->connectSocks, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning()));
      /* Display */
      connect(ui->digits, SIGNAL(valueChanged()), this, SLOT(showRestartWarning()));
      connect(ui->theme, SIGNAL(valueChanged()), this, SLOT(showRestartWarning()));
      connect(ui->lang, SIGNAL(valueChanged()), this, SLOT(showRestartWarning()));
      connect(ui->thirdPartyTxUrls, SIGNAL(textChanged(const QString&)), this, SLOT(showRestartWarning()));
      connect(ui->showMasternodesTab, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning()));
  }
  
  void OptionsDialog::setMapper()
  {
      /* Main */
      mapper->addMapping(ui->bitcoinAtStartup, OptionsModel::StartAtStartup);
      mapper->addMapping(ui->threadsScriptVerif, OptionsModel::ThreadsScriptVerif);
      mapper->addMapping(ui->databaseCache, OptionsModel::DatabaseCache);
      // Zeromint Enabled
      mapper->addMapping(ui->checkBoxZeromintEnable, OptionsModel::ZeromintEnable);
      // Zerocoin mint percentage
      mapper->addMapping(ui->zeromintPercentage, OptionsModel::ZeromintPercentage);
      // Zerocoin preferred denomination
      mapper->addMapping(ui->preferredDenom, OptionsModel::ZeromintPrefDenom);
  
      /* Wallet */
      mapper->addMapping(ui->spendZeroConfChange, OptionsModel::SpendZeroConfChange);
      mapper->addMapping(ui->coinControlFeatures, OptionsModel::CoinControlFeatures);
      mapper->addMapping(ui->spinBoxStakeSplitThreshold, OptionsModel::StakeSplitThreshold);
  
      /* Network */
      mapper->addMapping(ui->mapPortUpnp, OptionsModel::MapPortUPnP);
      mapper->addMapping(ui->allowIncoming, OptionsModel::Listen);
  
      mapper->addMapping(ui->connectSocks, OptionsModel::ProxyUse);
      mapper->addMapping(ui->proxyIp, OptionsModel::ProxyIP);
      mapper->addMapping(ui->proxyPort, OptionsModel::ProxyPort);
  
      /* Window */
  #ifndef Q_OS_MAC
      mapper->addMapping(ui->minimizeToTray, OptionsModel::MinimizeToTray);
      mapper->addMapping(ui->minimizeOnClose, OptionsModel::MinimizeOnClose);
  #endif
  
      /* Display */
      mapper->addMapping(ui->digits, OptionsModel::Digits);
      mapper->addMapping(ui->theme, OptionsModel::Theme);
      mapper->addMapping(ui->theme, OptionsModel::Theme);
      mapper->addMapping(ui->lang, OptionsModel::Language);
      mapper->addMapping(ui->unit, OptionsModel::DisplayUnit);
      mapper->addMapping(ui->thirdPartyTxUrls, OptionsModel::ThirdPartyTxUrls);
      mapper->addMapping(ui->checkBoxHideZeroBalances, OptionsModel::HideZeroBalances);
  
      /* Masternode Tab */
      mapper->addMapping(ui->showMasternodesTab, OptionsModel::ShowMasternodesTab);
  }
  
  void OptionsDialog::enableOkButton()
  {
      /* prevent enabling of the OK button when data modified, if there is an invalid proxy address present */
      if (fProxyIpValid)
          setOkButtonState(true);
  }
  
  void OptionsDialog::disableOkButton()
  {
      setOkButtonState(false);
  }
  
  void OptionsDialog::setOkButtonState(bool fState)
  {
      ui->okButton->setEnabled(fState);
  }
  
  void OptionsDialog::on_resetButton_clicked()
  {
      if (model) {
          // confirmation dialog
          QMessageBox::StandardButton btnRetVal = QMessageBox::question(this, tr("Confirm options reset"),
              tr("Client restart required to activate changes.") + "<br><br>" + tr("Client will be shutdown, do you want to proceed?"),
              QMessageBox::Yes | QMessageBox::Cancel, QMessageBox::Cancel);
  
          if (btnRetVal == QMessageBox::Cancel)
              return;
  
          /* reset all options and close GUI */
          model->Reset();
          QApplication::quit();
      }
  }
  
  void OptionsDialog::on_okButton_clicked()
  {
      mapper->submit();
      obfuScationPool.cachedNumBlocks = std::numeric_limits<int>::max();
      pwalletMain->MarkDirty();
      accept();
  }
  
  void OptionsDialog::on_cancelButton_clicked()
  {
      reject();
  }
  
  void OptionsDialog::showRestartWarning(bool fPersistent)
  {
      ui->statusLabel->setStyleSheet("QLabel { color: red; }");
  
      if (fPersistent) {
          ui->statusLabel->setText(tr("Client restart required to activate changes."));
      } else {
          ui->statusLabel->setText(tr("This change would require a client restart."));
          // clear non-persistent status label after 10 seconds
          // Todo: should perhaps be a class attribute, if we extend the use of statusLabel
          QTimer::singleShot(10000, this, SLOT(clearStatusLabel()));
      }
  }
  
  void OptionsDialog::clearStatusLabel()
  {
      ui->statusLabel->clear();
  }
  
  void OptionsDialog::doProxyIpChecks(QValidatedLineEdit* pUiProxyIp, QLineEdit* pUiProxyPort)
  {
      const std::string strAddrProxy = pUiProxyIp->text().toStdString();
      CService addrProxy;
  
      // Check for a valid IPv4 / IPv6 address
      if (!(fProxyIpValid = LookupNumeric(strAddrProxy.c_str(), addrProxy))) {
          disableOkButton();
          pUiProxyIp->setValid(false);
          ui->statusLabel->setStyleSheet("QLabel { color: red; }");
          ui->statusLabel->setText(tr("The supplied proxy address is invalid."));
          return;
      }
      // Check proxy port
      if (!pUiProxyPort->hasAcceptableInput()){
          disableOkButton();
          ui->statusLabel->setStyleSheet("QLabel { color: red; }");
          ui->statusLabel->setText(tr("The supplied proxy port is invalid."));
          return;
      }
  
      proxyType checkProxy = proxyType(addrProxy);
      if (!checkProxy.IsValid()) {
          disableOkButton();
          ui->statusLabel->setStyleSheet("QLabel { color: red; }");
          ui->statusLabel->setText(tr("The supplied proxy settings are invalid."));
          return;
      }
  
      enableOkButton();
      ui->statusLabel->clear();
  }
  
  bool OptionsDialog::eventFilter(QObject* object, QEvent* event)
  {
      if (event->type() == QEvent::FocusOut) {
          if (object == ui->proxyIp || object == ui->proxyPort) {
              emit proxyIpChecks(ui->proxyIp, ui->proxyPort);
          }
      }
      return QDialog::eventFilter(object, event);
  }
  