split of createTrayIconMenu() from createTrayIcon() in BitcoinGUI

- this allows to setup the trayicon before we have and want a trayicon menu
- should be of great use, when we remove that splash screen
- fixes a small bug with the toggleHideAction icon, which is not only used with
  trayicon but also with the Mac dock

src/qt/bitcoingui.cpp

@@ -90,7 +90,7 @@ BitcoinGUI::BitcoinGUI(QWidget *parent):
     // Create the toolbars
     createToolBars();
 
-    // Create the tray icon (or setup the dock icon)
+    // Create system tray icon and notification
     createTrayIcon();
 
     // Create tabs
@@ -354,12 +354,17 @@ void BitcoinGUI::setClientModel(ClientModel *clientModel)
                 // Just attach " [testnet]" to the existing tooltip
                 trayIcon->setToolTip(trayIcon->toolTip() + QString(" ") + tr("[testnet]"));
                 trayIcon->setIcon(QIcon(":/icons/toolbar_testnet"));
-                toggleHideAction->setIcon(QIcon(":/icons/toolbar_testnet"));
             }
 
+            toggleHideAction->setIcon(QIcon(":/icons/toolbar_testnet"));
             aboutAction->setIcon(QIcon(":/icons/toolbar_testnet"));
         }
 
+        // Create system tray menu (or setup the dock menu) that late to prevent users from calling actions,
+        // while the client has not yet fully loaded
+        if(trayIcon)
+            createTrayIconMenu();
+
         // Keep up to date with client
         setNumConnections(clientModel->getNumConnections());
         connect(clientModel, SIGNAL(numConnectionsChanged(int)), this, SLOT(setNumConnections(int)));
@@ -407,16 +412,26 @@ void BitcoinGUI::setWalletModel(WalletModel *walletModel)
 
 void BitcoinGUI::createTrayIcon()
 {
-    QMenu *trayIconMenu;
 #ifndef Q_OS_MAC
     trayIcon = new QSystemTrayIcon(this);
-    trayIconMenu = new QMenu(this);
+
-    trayIcon->setContextMenu(trayIconMenu);
     trayIcon->setToolTip(tr("Bitcoin client"));
     trayIcon->setIcon(QIcon(":/icons/toolbar"));
+    trayIcon->show();
+#endif
+
+    notificator = new Notificator(qApp->applicationName(), trayIcon);
+}
+
+void BitcoinGUI::createTrayIconMenu()
+{
+    QMenu *trayIconMenu;
+#ifndef Q_OS_MAC
+    trayIconMenu = new QMenu(this);
+    trayIcon->setContextMenu(trayIconMenu);
+
     connect(trayIcon, SIGNAL(activated(QSystemTrayIcon::ActivationReason)),
             this, SLOT(trayIconActivated(QSystemTrayIcon::ActivationReason)));
-    trayIcon->show();
 #else
     // Note: On Mac, the dock icon is used to provide the tray's functionality.
     MacDockIconHandler *dockIconHandler = MacDockIconHandler::instance();
@@ -438,8 +453,6 @@ void BitcoinGUI::createTrayIcon()
     trayIconMenu->addSeparator();
     trayIconMenu->addAction(quitAction);
 #endif
-
-    notificator = new Notificator(qApp->applicationName(), trayIcon);
 }
 
 #ifndef Q_OS_MAC

src/qt/bitcoingui.h

@@ -105,8 +105,10 @@ private:
     void createMenuBar();
     /** Create the toolbars */
     void createToolBars();
-    /** Create system tray (notification) icon */
+    /** Create system tray icon and notification */
     void createTrayIcon();
+    /** Create system tray menu (or setup the dock menu) */
+    void createTrayIconMenu();
 
 public slots:
     /** Set number of connections shown in the UI */