text: // Copyright (c) 2010-2020 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <node/ui_interface.h>
  
  #include <util/translation.h>
  
  #include <boost/signals2/optional_last_value.hpp>
  #include <boost/signals2/signal.hpp>
  // SYSCOIN
  #include <evo/deterministicmns.h>
  CClientUIInterface uiInterface;
  
  struct UISignals {
      boost::signals2::signal<CClientUIInterface::ThreadSafeMessageBoxSig, boost::signals2::optional_last_value<bool>> ThreadSafeMessageBox;
      boost::signals2::signal<CClientUIInterface::ThreadSafeQuestionSig, boost::signals2::optional_last_value<bool>> ThreadSafeQuestion;
      boost::signals2::signal<CClientUIInterface::InitMessageSig> InitMessage;
      boost::signals2::signal<CClientUIInterface::InitWalletSig> InitWallet;
      boost::signals2::signal<CClientUIInterface::NotifyNumConnectionsChangedSig> NotifyNumConnectionsChanged;
      boost::signals2::signal<CClientUIInterface::NotifyNetworkActiveChangedSig> NotifyNetworkActiveChanged;
      boost::signals2::signal<CClientUIInterface::NotifyAlertChangedSig> NotifyAlertChanged;
      boost::signals2::signal<CClientUIInterface::ShowProgressSig> ShowProgress;
      boost::signals2::signal<CClientUIInterface::NotifyBlockTipSig> NotifyBlockTip;
      boost::signals2::signal<CClientUIInterface::NotifyHeaderTipSig> NotifyHeaderTip;
      boost::signals2::signal<CClientUIInterface::BannedListChangedSig> BannedListChanged;
      boost::signals2::signal<CClientUIInterface::NotifyAdditionalDataSyncProgressChangedSig> NotifyAdditionalDataSyncProgressChanged;
      boost::signals2::signal<CClientUIInterface::NotifyMasternodeListChangedSig> NotifyMasternodeListChanged;
  };
  static UISignals g_ui_signals;
  
  #define ADD_SIGNALS_IMPL_WRAPPER(signal_name)                                                                 \
      boost::signals2::connection CClientUIInterface::signal_name##_connect(std::function<signal_name##Sig> fn) \
      {                                                                                                         \
          return g_ui_signals.signal_name.connect(fn);                                                          \
      }
  
  ADD_SIGNALS_IMPL_WRAPPER(ThreadSafeMessageBox);
  ADD_SIGNALS_IMPL_WRAPPER(ThreadSafeQuestion);
  ADD_SIGNALS_IMPL_WRAPPER(InitMessage);
  ADD_SIGNALS_IMPL_WRAPPER(InitWallet);
  ADD_SIGNALS_IMPL_WRAPPER(NotifyNumConnectionsChanged);
  ADD_SIGNALS_IMPL_WRAPPER(NotifyNetworkActiveChanged);
  ADD_SIGNALS_IMPL_WRAPPER(NotifyAlertChanged);
  ADD_SIGNALS_IMPL_WRAPPER(ShowProgress);
  ADD_SIGNALS_IMPL_WRAPPER(NotifyBlockTip);
  ADD_SIGNALS_IMPL_WRAPPER(NotifyHeaderTip);
  ADD_SIGNALS_IMPL_WRAPPER(BannedListChanged);
  // SYSCOIN
  ADD_SIGNALS_IMPL_WRAPPER(NotifyAdditionalDataSyncProgressChanged);
  ADD_SIGNALS_IMPL_WRAPPER(NotifyMasternodeListChanged);
  
  bool CClientUIInterface::ThreadSafeMessageBox(const bilingual_str& message, const std::string& caption, unsigned int style) { return g_ui_signals.ThreadSafeMessageBox(message, caption, style).value_or(false);}
  bool CClientUIInterface::ThreadSafeQuestion(const bilingual_str& message, const std::string& non_interactive_message, const std::string& caption, unsigned int style) { return g_ui_signals.ThreadSafeQuestion(message, non_interactive_message, caption, style).value_or(false);}
  void CClientUIInterface::InitMessage(const std::string& message) { return g_ui_signals.InitMessage(message); }
  void CClientUIInterface::InitWallet() { return g_ui_signals.InitWallet(); }
  void CClientUIInterface::NotifyNumConnectionsChanged(int newNumConnections) { return g_ui_signals.NotifyNumConnectionsChanged(newNumConnections); }
  void CClientUIInterface::NotifyNetworkActiveChanged(bool networkActive) { return g_ui_signals.NotifyNetworkActiveChanged(networkActive); }
  void CClientUIInterface::NotifyAlertChanged() { return g_ui_signals.NotifyAlertChanged(); }
  void CClientUIInterface::ShowProgress(const std::string& title, int nProgress, bool resume_possible) { return g_ui_signals.ShowProgress(title, nProgress, resume_possible); }
  void CClientUIInterface::NotifyBlockTip(SynchronizationState s, const CBlockIndex* i) { return g_ui_signals.NotifyBlockTip(s, i); }
  void CClientUIInterface::NotifyHeaderTip(SynchronizationState s, const CBlockIndex* i) { return g_ui_signals.NotifyHeaderTip(s, i); }
  void CClientUIInterface::BannedListChanged() { return g_ui_signals.BannedListChanged(); }
  void CClientUIInterface::NotifyAdditionalDataSyncProgressChanged(double nSyncProgress) { return g_ui_signals.NotifyAdditionalDataSyncProgressChanged(nSyncProgress); }
  void CClientUIInterface::NotifyMasternodeListChanged(const CDeterministicMNList& mnList) { return g_ui_signals.NotifyMasternodeListChanged(mnList); }
  
  bool InitError(const bilingual_str& str)
  {
      uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_ERROR);
      return false;
  }
  
  void InitWarning(const bilingual_str& str)
  {
      uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_WARNING);
  }
  