5 files changed, 60 insertions, 14 deletions

diff --git a/src/qt/bitcoin.cpp b/src/qt/bitcoin.cpp
index 54f96f4426..57ce7da361 100644
--- a/src/qt/bitcoin.cpp
+++ b/src/qt/bitcoin.cpp
@@ -313,11 +313,16 @@ int main(int argc, char *argv[])
                     splash.finish(&window);
 
                 ClientModel clientModel(&optionsModel);
-                WalletModel walletModel(pwalletMain, &optionsModel);
+                WalletModel *walletModel = 0;
+                if(pwalletMain)
+                    walletModel = new WalletModel(pwalletMain, &optionsModel);
 
                 window.setClientModel(&clientModel);
-                window.addWallet("~Default", &walletModel);
-                window.setCurrentWallet("~Default");
+                if(walletModel)
+                {
+                    window.addWallet("~Default", walletModel);
+                    window.setCurrentWallet("~Default");
+                }
 
                 // If -min option passed, start window minimized.
                 if(GetBoolArg("-min", false))
@@ -335,8 +340,11 @@ int main(int argc, char *argv[])
                                  &window, SLOT(handlePaymentRequest(SendCoinsRecipient)));
                 QObject::connect(&window, SIGNAL(receivedURI(QString)),
                                  paymentServer, SLOT(handleURIOrFile(QString)));
-                QObject::connect(&walletModel, SIGNAL(coinsSent(CWallet*,SendCoinsRecipient,QByteArray)),
-                                 paymentServer, SLOT(fetchPaymentACK(CWallet*,const SendCoinsRecipient&,QByteArray)));
+                if(walletModel)
+                {
+                    QObject::connect(walletModel, SIGNAL(coinsSent(CWallet*,SendCoinsRecipient,QByteArray)),
+                                     paymentServer, SLOT(fetchPaymentACK(CWallet*,const SendCoinsRecipient&,QByteArray)));
+                }
                 QObject::connect(paymentServer, SIGNAL(message(QString,QString,unsigned int)),
                                  guiref, SLOT(message(QString,QString,unsigned int)));
                 QTimer::singleShot(100, paymentServer, SLOT(uiReady()));
@@ -347,6 +355,7 @@ int main(int argc, char *argv[])
                 window.setClientModel(0);
                 window.removeAllWallets();
                 guiref = 0;
+                delete walletModel;
             }
             // Shutdown the core and its threads, but don't exit Bitcoin-Qt here
             threadGroup.interrupt_all();
diff --git a/src/qt/bitcoingui.cpp b/src/qt/bitcoingui.cpp
index 8b0aba1b5b..a1becc12ec 100644
--- a/src/qt/bitcoingui.cpp
+++ b/src/qt/bitcoingui.cpp
@@ -163,6 +163,9 @@ BitcoinGUI::BitcoinGUI(bool fIsTestnet, QWidget *parent) :
 
     // Install event filter to be able to catch status tip events (QEvent::StatusTip)
     this->installEventFilter(this);
+
+    // Initially wallet actions should be disabled
+    setWalletActionsEnabled(false);
 }
 
 BitcoinGUI::~BitcoinGUI()
@@ -352,6 +355,7 @@ void BitcoinGUI::setClientModel(ClientModel *clientModel)
 
 bool BitcoinGUI::addWallet(const QString& name, WalletModel *walletModel)
 {
+    setWalletActionsEnabled(true);
     return walletFrame->addWallet(name, walletModel);
 }
 
@@ -362,9 +366,26 @@ bool BitcoinGUI::setCurrentWallet(const QString& name)
 
 void BitcoinGUI::removeAllWallets()
 {
+    setWalletActionsEnabled(false);
     walletFrame->removeAllWallets();
 }
 
+void BitcoinGUI::setWalletActionsEnabled(bool enabled)
+{
+    overviewAction->setEnabled(enabled);
+    sendCoinsAction->setEnabled(enabled);
+    receiveCoinsAction->setEnabled(enabled);
+    historyAction->setEnabled(enabled);
+    encryptWalletAction->setEnabled(enabled);
+    backupWalletAction->setEnabled(enabled);
+    changePassphraseAction->setEnabled(enabled);
+    signMessageAction->setEnabled(enabled);
+    verifyMessageAction->setEnabled(enabled);
+    usedSendingAddressesAction->setEnabled(enabled);
+    usedReceivingAddressesAction->setEnabled(enabled);
+    openAction->setEnabled(enabled);
+}
+
 void BitcoinGUI::createTrayIcon(bool fIsTestnet)
 {
 #ifndef Q_OS_MAC
diff --git a/src/qt/bitcoingui.h b/src/qt/bitcoingui.h
index acbc38c894..b9a8a03139 100644
--- a/src/qt/bitcoingui.h
+++ b/src/qt/bitcoingui.h
@@ -108,6 +108,9 @@ private:
     /** Create system tray menu (or setup the dock menu) */
     void createTrayIconMenu();
 
+    /** Enable or disable all wallet-related actions */
+    void setWalletActionsEnabled(bool enabled);
+
 signals:
     /** Signal raised when a URI was entered or dragged to the GUI */
     void receivedURI(const QString &uri);
diff --git a/src/qt/walletframe.cpp b/src/qt/walletframe.cpp
index 04eea59169..fead022928 100644
--- a/src/qt/walletframe.cpp
+++ b/src/qt/walletframe.cpp
@@ -10,6 +10,7 @@
 #include <cstdio>
 
 #include <QHBoxLayout>
+#include <QLabel>
 
 WalletFrame::WalletFrame(BitcoinGUI *_gui) :
     QFrame(_gui),
@@ -21,6 +22,10 @@ WalletFrame::WalletFrame(BitcoinGUI *_gui) :
     walletStack = new QStackedWidget(this);
     walletFrameLayout->setContentsMargins(0,0,0,0);
     walletFrameLayout->addWidget(walletStack);
+
+    QLabel *noWallet = new QLabel(tr("No wallet has been loaded."));
+    noWallet->setAlignment(Qt::AlignCenter);
+    walletStack->addWidget(noWallet);
 }
 
 WalletFrame::~WalletFrame()
@@ -85,7 +90,7 @@ void WalletFrame::removeAllWallets()
 
 bool WalletFrame::handlePaymentRequest(const SendCoinsRecipient &recipient)
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (!walletView)
         return false;
 
@@ -130,56 +135,62 @@ void WalletFrame::gotoSendCoinsPage(QString addr)
 
 void WalletFrame::gotoSignMessageTab(QString addr)
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->gotoSignMessageTab(addr);
 }
 
 void WalletFrame::gotoVerifyMessageTab(QString addr)
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->gotoVerifyMessageTab(addr);
 }
 
 void WalletFrame::encryptWallet(bool status)
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->encryptWallet(status);
 }
 
 void WalletFrame::backupWallet()
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->backupWallet();
 }
 
 void WalletFrame::changePassphrase()
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->changePassphrase();
 }
 
 void WalletFrame::unlockWallet()
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->unlockWallet();
 }
 
 void WalletFrame::usedSendingAddresses()
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->usedSendingAddresses();
 }
 
 void WalletFrame::usedReceivingAddresses()
 {
-    WalletView *walletView = (WalletView*)walletStack->currentWidget();
+    WalletView *walletView = currentWalletView();
     if (walletView)
         walletView->usedReceivingAddresses();
 }
+
+WalletView *WalletFrame::currentWalletView()
+{
+    return qobject_cast<WalletView*>(walletStack->currentWidget());
+}
+
diff --git a/src/qt/walletframe.h b/src/qt/walletframe.h
index 8cfaa0e1d4..f1830a0d6b 100644
--- a/src/qt/walletframe.h
+++ b/src/qt/walletframe.h
@@ -45,6 +45,8 @@ private:
 
     bool bOutOfSync;
 
+    WalletView *currentWalletView();
+
 public slots:
     /** Switch to overview (home) page */
     void gotoOverviewPage();