use new message() function in BitcoinGUI

- use it for displaying URI parsing warnings
- use it for displaying error and information in backup wallet function
  (the information display is new and the error was a warning before)

- cleanup BitcoinGUI::incomingTransaction()
-- use message() + the information icon from message
-- comment out an unused parameter in the function definition and
   declaration
-- move all pre-checks at the beginning of the function

src/qt/bitcoingui.cpp

@@ -697,39 +697,33 @@ void BitcoinGUI::askFee(qint64 nFeeRequired, bool *payFee)
     *payFee = (retval == QMessageBox::Yes);
 }
 
-void BitcoinGUI::incomingTransaction(const QModelIndex & parent, int start, int end)
+void BitcoinGUI::incomingTransaction(const QModelIndex& parent, int start, int /*end*/)
 {
-    if(!walletModel || !clientModel)
+    // Prevent balloon-spam when initial block download is in progress
+    if(!walletModel || !clientModel || clientModel->inInitialBlockDownload())
         return;
+
     TransactionTableModel *ttm = walletModel->getTransactionTableModel();
+
+    QString date = ttm->index(start, TransactionTableModel::Date, parent)
+                     .data().toString();
     qint64 amount = ttm->index(start, TransactionTableModel::Amount, parent)
-                    .data(Qt::EditRole).toULongLong();
-    if(!clientModel->inInitialBlockDownload())
-    {
-        // On new transaction, make an info balloon
-        // Unless the initial block download is in progress, to prevent balloon-spam
-        QString date = ttm->index(start, TransactionTableModel::Date, parent)
-                        .data().toString();
-        QString type = ttm->index(start, TransactionTableModel::Type, parent)
+                      .data(Qt::EditRole).toULongLong();
+    QString type = ttm->index(start, TransactionTableModel::Type, parent)
+                     .data().toString();
+    QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
                         .data().toString();
-        QString address = ttm->index(start, TransactionTableModel::ToAddress, parent)
-                        .data().toString();
-        QIcon icon = qvariant_cast<QIcon>(ttm->index(start,
-                            TransactionTableModel::ToAddress, parent)
-                        .data(Qt::DecorationRole));
 
-        notificator->notify(Notificator::Information,
-                            (amount)<0 ? tr("Sent transaction") :
-                                         tr("Incoming transaction"),
-                              tr("Date: %1\n"
-                                 "Amount: %2\n"
-                                 "Type: %3\n"
-                                 "Address: %4\n")
-                              .arg(date)
-                              .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
-                              .arg(type)
-                              .arg(address), icon);
-    }
+    // On new transaction, make an info balloon
+    message((amount)<0 ? tr("Sent transaction") : tr("Incoming transaction"),
+             tr("Date: %1\n"
+                "Amount: %2\n"
+                "Type: %3\n"
+                "Address: %4\n")
+                  .arg(date)
+                  .arg(BitcoinUnits::formatWithUnit(walletModel->getOptionsModel()->getDisplayUnit(), amount, true))
+                  .arg(type)
+                  .arg(address), CClientUIInterface::MSG_INFORMATION);
 }
 
 void BitcoinGUI::gotoOverviewPage()
@@ -821,7 +815,8 @@ void BitcoinGUI::dropEvent(QDropEvent *event)
         if (nValidUrisFound)
             gotoSendCoinsPage();
         else
-            notificator->notify(Notificator::Warning, tr("URI handling"), tr("URI can not be parsed! This can be caused by an invalid Bitcoin address or malformed URI parameters."));
+            message(tr("URI handling"), tr("URI can not be parsed! This can be caused by an invalid Bitcoin address or malformed URI parameters."),
+                      CClientUIInterface::ICON_WARNING);
     }
 
     event->acceptProposedAction();
@@ -848,7 +843,8 @@ void BitcoinGUI::handleURI(QString strURI)
         gotoSendCoinsPage();
     }
     else
-        notificator->notify(Notificator::Warning, tr("URI handling"), tr("URI can not be parsed! This can be caused by an invalid Bitcoin address or malformed URI parameters."));
+        message(tr("URI handling"), tr("URI can not be parsed! This can be caused by an invalid Bitcoin address or malformed URI parameters."),
+                  CClientUIInterface::ICON_WARNING);
 }
 
 void BitcoinGUI::setEncryptionStatus(int status)
@@ -898,8 +894,12 @@ void BitcoinGUI::backupWallet()
     QString filename = QFileDialog::getSaveFileName(this, tr("Backup Wallet"), saveDir, tr("Wallet Data (*.dat)"));
     if(!filename.isEmpty()) {
         if(!walletModel->backupWallet(filename)) {
-            QMessageBox::warning(this, tr("Backup Failed"), tr("There was an error trying to save the wallet data to the new location."));
+            message(tr("Backup Failed"), tr("There was an error trying to save the wallet data to the new location."),
+                      CClientUIInterface::MSG_ERROR);
         }
+        else
+            message(tr("Backup Successful"), tr("The wallet data was successfully saved to the new location."),
+                      CClientUIInterface::MSG_INFORMATION);
     }
 }
 

src/qt/bitcoingui.h

@@ -168,7 +168,7 @@ private slots:
 
         The new items are those between start and end inclusive, under the given parent item.
     */
-    void incomingTransaction(const QModelIndex & parent, int start, int end);
+    void incomingTransaction(const QModelIndex& parent, int start, int /*end*/);
     /** Encrypt the wallet */
     void encryptWallet(bool status);
     /** Backup the wallet */