qtui.h/noui.h interface cleanup

- rename wxMessageBox, remove redundant arguments to noui/qtui calls
- also, add flag to force blocking, modal dialog box for disk space warning etc
- clarify function naming
- no more special MessageBox needed from AppInit2, as window object is created before calling AppInit2

src/init.cpp

@@ -237,7 +237,7 @@ bool AppInit2(int argc, char* argv[])
         strUsage.erase(std::remove(strUsage.begin(), strUsage.end(), '\t'), strUsage.end());
 #if defined(QT_GUI) && defined(WIN32)
         // On windows, show a message box, as there is no stderr
-        wxMessageBox(strUsage, "Usage");
+        ThreadSafeMessageBox(strUsage, _("Usage"), wxOK | wxMODAL);
 #else
         fprintf(stderr, "%s", strUsage.c_str());
 #endif
@@ -326,7 +326,7 @@ bool AppInit2(int argc, char* argv[])
     static boost::interprocess::file_lock lock(strLockFile.c_str());
     if (!lock.try_lock())
     {
-        wxMessageBox(strprintf(_("Cannot obtain a lock on data directory %s.  Bitcoin is probably already running."), GetDataDir().c_str()), "Bitcoin");
+        ThreadSafeMessageBox(strprintf(_("Cannot obtain a lock on data directory %s.  Bitcoin is probably already running."), GetDataDir().c_str()), _("Bitcoin"), wxOK|wxMODAL);
         return false;
     }
 
@@ -368,7 +368,7 @@ bool AppInit2(int argc, char* argv[])
         {
             strErrors << _("Wallet needed to be rewritten: restart Bitcoin to complete") << "\n";
             printf("%s", strErrors.str().c_str());
-            wxMessageBox(strErrors.str(), "Bitcoin", wxOK | wxICON_ERROR);
+            ThreadSafeMessageBox(strErrors.str(), _("Bitcoin"), wxOK | wxICON_ERROR | wxMODAL);
             return false;
         }
         else
@@ -440,7 +440,7 @@ bool AppInit2(int argc, char* argv[])
 
     if (!strErrors.str().empty())
     {
-        wxMessageBox(strErrors.str(), "Bitcoin", wxOK | wxICON_ERROR);
+        ThreadSafeMessageBox(strErrors.str(), _("Bitcoin"), wxOK | wxICON_ERROR | wxMODAL);
         return false;
     }
 
@@ -496,7 +496,7 @@ bool AppInit2(int argc, char* argv[])
         addrProxy = CService(mapArgs["-proxy"], 9050);
         if (!addrProxy.IsValid())
         {
-            wxMessageBox(_("Invalid -proxy address"), "Bitcoin");
+            ThreadSafeMessageBox(_("Invalid -proxy address"), _("Bitcoin"), wxOK | wxMODAL);
             return false;
         }
     }
@@ -527,7 +527,7 @@ bool AppInit2(int argc, char* argv[])
         std::string strError;
         if (!BindListenPort(strError))
         {
-            wxMessageBox(strError, "Bitcoin");
+            ThreadSafeMessageBox(strError, _("Bitcoin"), wxOK | wxMODAL);
             return false;
         }
     }
@@ -547,11 +547,11 @@ bool AppInit2(int argc, char* argv[])
     {
         if (!ParseMoney(mapArgs["-paytxfee"], nTransactionFee))
         {
-            wxMessageBox(_("Invalid amount for -paytxfee=<amount>"), "Bitcoin");
+            ThreadSafeMessageBox(_("Invalid amount for -paytxfee=<amount>"), _("Bitcoin"), wxOK | wxMODAL);
             return false;
         }
         if (nTransactionFee > 0.25 * COIN)
-            wxMessageBox(_("Warning: -paytxfee is set very high.  This is the transaction fee you will pay if you send a transaction."), "Bitcoin", wxOK | wxICON_EXCLAMATION);
+            ThreadSafeMessageBox(_("Warning: -paytxfee is set very high.  This is the transaction fee you will pay if you send a transaction."), _("Bitcoin"), wxOK | wxICON_EXCLAMATION | wxMODAL);
     }
 
     //
@@ -563,7 +563,7 @@ bool AppInit2(int argc, char* argv[])
     RandAddSeedPerfmon();
 
     if (!CreateThread(StartNode, NULL))
-        wxMessageBox(_("Error: CreateThread(StartNode) failed"), "Bitcoin");
+        ThreadSafeMessageBox(_("Error: CreateThread(StartNode) failed"), _("Bitcoin"), wxOK | wxMODAL);
 
     if (fServer)
         CreateThread(ThreadRPCServer, NULL);

src/main.cpp

@@ -1811,7 +1811,7 @@ bool CheckDiskSpace(uint64 nAdditionalBytes)
         string strMessage = _("Warning: Disk space is low  ");
         strMiscWarning = strMessage;
         printf("*** %s\n", strMessage.c_str());
-        ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
+        ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION | wxMODAL);
         QueueShutdown();
         return false;
     }

src/noui.h

@@ -9,7 +9,6 @@
 #include "wallet.h"
 #include "init.h"
 
-typedef void wxWindow;
 #define wxYES                   0x00000002
 #define wxOK                    0x00000004
 #define wxNO                    0x00000008
@@ -36,21 +35,17 @@ typedef void wxWindow;
 #define wxHELP                  0x00008000
 #define wxMORE                  0x00010000
 #define wxSETUP                 0x00020000
+// Force blocking, modal message box dialog (not just notification)
+#define wxMODAL                 0x00040000
 
-inline int MyMessageBox(const std::string& message, const std::string& caption="Message", int style=wxOK, wxWindow* parent=NULL, int x=-1, int y=-1)
+inline int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style=wxOK)
 {
     printf("%s: %s\n", caption.c_str(), message.c_str());
     fprintf(stderr, "%s: %s\n", caption.c_str(), message.c_str());
     return 4;
 }
-#define wxMessageBox  MyMessageBox
 
-inline int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style=wxOK, wxWindow* parent=NULL, int x=-1, int y=-1)
-{
-    return MyMessageBox(message, caption, style, parent, x, y);
-}
-
-inline bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption, wxWindow* parent)
+inline bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption)
 {
     return true;
 }

src/qt/bitcoin.cpp

@@ -38,23 +38,18 @@ static QSplashScreen *splashref;
 static WalletModel *walletmodel;
 static ClientModel *clientmodel;
 
-int MyMessageBox(const std::string& message, const std::string& caption, int style, wxWindow* parent, int x, int y)
-{
-    // Message from AppInit2(), always in main thread before main window is constructed
-    QMessageBox::critical(0, QString::fromStdString(caption),
-        QString::fromStdString(message),
-        QMessageBox::Ok, QMessageBox::Ok);
-    return 4;
-}
-
-int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style, wxWindow* parent, int x, int y)
+int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style)
 {
     // Message from network thread
     if(guiref)
     {
-        QMetaObject::invokeMethod(guiref, "error", Qt::QueuedConnection,
+        bool modal = (style & wxMODAL);
+        // in case of modal message, use blocking connection to wait for user to click OK
+        QMetaObject::invokeMethod(guiref, "error",
+                                   modal ? GUIUtil::blockingGUIThreadConnection() : Qt::QueuedConnection,
                                    Q_ARG(QString, QString::fromStdString(caption)),
-                                   Q_ARG(QString, QString::fromStdString(message)));
+                                   Q_ARG(QString, QString::fromStdString(message)),
+                                   Q_ARG(bool, modal));
     }
     else
     {
@@ -64,7 +59,7 @@ int ThreadSafeMessageBox(const std::string& message, const std::string& caption,
     return 4;
 }
 
-bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption, wxWindow* parent)
+bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption)
 {
     if(!guiref)
         return false;
@@ -222,15 +217,16 @@ int main(int argc, char *argv[])
 
     try
     {
+        BitcoinGUI window;
+        guiref = &window;
         if(AppInit2(argc, argv))
         {
             {
-                // Put this in a block, so that BitcoinGUI is cleaned up properly before
-                // calling Shutdown() in case of exceptions.
+                // Put this in a block, so that the Model objects are cleaned up before
+                // calling Shutdown().
 
                 optionsModel.Upgrade(); // Must be done after AppInit2
 
-                BitcoinGUI window;
                 if (splashref)
                     splash.finish(&window);
 
@@ -239,7 +235,6 @@ int main(int argc, char *argv[])
                 WalletModel walletModel(pwalletMain, &optionsModel);
                 walletmodel = &walletModel;
 
-                guiref = &window;
                 window.setClientModel(&clientModel);
                 window.setWalletModel(&walletModel);
 
@@ -276,6 +271,8 @@ int main(int argc, char *argv[])
 #endif
                 app.exec();
 
+                window.setClientModel(0);
+                window.setWalletModel(0);
                 guiref = 0;
                 clientmodel = 0;
                 walletmodel = 0;

src/qt/bitcoingui.cpp

@@ -336,7 +336,7 @@ void BitcoinGUI::setClientModel(ClientModel *clientModel)
         connect(clientModel, SIGNAL(numBlocksChanged(int)), this, SLOT(setNumBlocks(int)));
 
         // Report errors from network/worker thread
-        connect(clientModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
+        connect(clientModel, SIGNAL(error(QString,QString, bool)), this, SLOT(error(QString,QString,bool)));
     }
 }
 
@@ -346,7 +346,7 @@ void BitcoinGUI::setWalletModel(WalletModel *walletModel)
     if(walletModel)
     {
         // Report errors from wallet thread
-        connect(walletModel, SIGNAL(error(QString,QString)), this, SLOT(error(QString,QString)));
+        connect(walletModel, SIGNAL(error(QString,QString,bool)), this, SLOT(error(QString,QString,bool)));
 
         // Put transaction list in tabs
         transactionView->setModel(walletModel);
@@ -538,10 +538,15 @@ void BitcoinGUI::setNumBlocks(int count)
     progressBar->setToolTip(tooltip);
 }
 
-void BitcoinGUI::error(const QString &title, const QString &message)
+void BitcoinGUI::error(const QString &title, const QString &message, bool modal)
 {
     // Report errors from network/worker thread
-    notificator->notify(Notificator::Critical, title, message);
+    if(modal)
+    {
+        QMessageBox::critical(this, title, message, QMessageBox::Ok, QMessageBox::Ok);
+    } else {
+        notificator->notify(Notificator::Critical, title, message);
+    }
 }
 
 void BitcoinGUI::changeEvent(QEvent *e)

src/qt/bitcoingui.h

@@ -115,7 +115,7 @@ public slots:
     void setEncryptionStatus(int status);
 
     /** Notify the user of an error in the network or transaction handling code. */
-    void error(const QString &title, const QString &message);
+    void error(const QString &title, const QString &message, bool modal);
     /** Asks the user whether to pay the transaction fee or to cancel the transaction.
        It is currently not possible to pass a return value to another thread through
        BlockingQueuedConnection, so an indirected pointer is used.

src/qt/clientmodel.h

@@ -52,7 +52,7 @@ signals:
     void numBlocksChanged(int count);
 
     //! Asynchronous error notification
-    void error(const QString &title, const QString &message);
+    void error(const QString &title, const QString &message, bool modal);
 
 public slots:
 

src/qt/walletmodel.cpp

@@ -140,7 +140,7 @@ WalletModel::SendCoinsReturn WalletModel::sendCoins(const QList<SendCoinsRecipie
             }
             return TransactionCreationFailed;
         }
-        if(!ThreadSafeAskFee(nFeeRequired, tr("Sending...").toStdString(), NULL))
+        if(!ThreadSafeAskFee(nFeeRequired, tr("Sending...").toStdString()))
         {
             return Aborted;
         }

src/qt/walletmodel.h

@@ -135,7 +135,7 @@ signals:
     void requireUnlock();
 
     // Asynchronous error notification
-    void error(const QString &title, const QString &message);
+    void error(const QString &title, const QString &message, bool modal);
 
 public slots:
     void update();

src/qtui.h

@@ -7,7 +7,6 @@
 #include <string>
 #include "wallet.h"
 
-typedef void wxWindow;
 #define wxYES                   0x00000002
 #define wxOK                    0x00000004
 #define wxNO                    0x00000008
@@ -34,11 +33,11 @@ typedef void wxWindow;
 #define wxHELP                  0x00008000
 #define wxMORE                  0x00010000
 #define wxSETUP                 0x00020000
+// Force blocking, modal message box dialog (not just notification)
+#define wxMODAL                 0x00040000
 
-extern int MyMessageBox(const std::string& message, const std::string& caption="Message", int style=wxOK, wxWindow* parent=NULL, int x=-1, int y=-1);
-#define wxMessageBox  MyMessageBox
-extern int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style=wxOK, wxWindow* parent=NULL, int x=-1, int y=-1);
-extern bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption, wxWindow* parent);
+extern int ThreadSafeMessageBox(const std::string& message, const std::string& caption, int style=wxOK);
+extern bool ThreadSafeAskFee(int64 nFeeRequired, const std::string& strCaption);
 extern void ThreadSafeHandleURL(const std::string& strURL);
 extern void MainFrameRepaint();
 extern void AddressBookRepaint();

src/util.cpp

@@ -1041,7 +1041,7 @@ void AddTimeData(const CNetAddr& ip, int64 nTime)
                     string strMessage = _("Warning: Please check that your computer's date and time are correct.  If your clock is wrong Bitcoin will not work properly.");
                     strMiscWarning = strMessage;
                     printf("*** %s\n", strMessage.c_str());
-                    boost::thread(boost::bind(ThreadSafeMessageBox, strMessage+" ", string("Bitcoin"), wxOK | wxICON_EXCLAMATION, (wxWindow*)NULL, -1, -1));
+                    ThreadSafeMessageBox(strMessage+" ", string("Bitcoin"), wxOK | wxICON_EXCLAMATION);
                 }
             }
         }

src/wallet.cpp

@@ -1219,7 +1219,7 @@ string CWallet::SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew,
         return strError;
     }
 
-    if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending..."), NULL))
+    if (fAskFee && !ThreadSafeAskFee(nFeeRequired, _("Sending...")))
         return "ABORTED";
 
     if (!CommitTransaction(wtxNew, reservekey))