[Qt] minor watch-only changes

- use watch-only, not watchonly
- add back a tooltip hint when hovering addresses and attach
  "(watch-only)" at the end

src/qt/transactiontablemodel.cpp

@@ -394,19 +394,25 @@ QVariant TransactionTableModel::txAddressDecoration(const TransactionRecord *wtx
 
 QString TransactionTableModel::formatTxToAddress(const TransactionRecord *wtx, bool tooltip) const
 {
+    QString watchAddress;
+    if (tooltip) {
+        // Mark transactions involving watch-only addresses by adding " (watch-only)"
+        watchAddress = wtx->involvesWatchAddress ? QString(" (") + tr("watch-only") + QString(")") : "";
+    }
+
     switch(wtx->type)
     {
     case TransactionRecord::RecvFromOther:
-        return QString::fromStdString(wtx->address);
+        return QString::fromStdString(wtx->address) + watchAddress;
     case TransactionRecord::RecvWithAddress:
     case TransactionRecord::SendToAddress:
     case TransactionRecord::Generated:
-        return lookupAddress(wtx->address, tooltip);
+        return lookupAddress(wtx->address, tooltip) + watchAddress;
     case TransactionRecord::SendToOther:
-        return QString::fromStdString(wtx->address);
+        return QString::fromStdString(wtx->address) + watchAddress;
     case TransactionRecord::SendToSelf:
     default:
-        return tr("(n/a)");
+        return tr("(n/a)") + watchAddress;
     }
 }
 

src/qt/transactionview.cpp

@@ -331,7 +331,7 @@ void TransactionView::exportClicked()
     writer.setModel(transactionProxyModel);
     writer.addColumn(tr("Confirmed"), 0, TransactionTableModel::ConfirmedRole);
     if (model && model->haveWatchOnly())
-        writer.addColumn(tr("Watchonly"), TransactionTableModel::Watchonly);
+        writer.addColumn(tr("Watch-only"), TransactionTableModel::Watchonly);
     writer.addColumn(tr("Date"), 0, TransactionTableModel::DateRole);
     writer.addColumn(tr("Type"), TransactionTableModel::Type, Qt::EditRole);
     writer.addColumn(tr("Label"), 0, TransactionTableModel::LabelRole);

src/qt/walletmodel.h

@@ -256,7 +256,7 @@ public slots:
     void updateTransaction(const QString &hash, int status);
     /* New, updated or removed address book entry */
     void updateAddressBook(const QString &address, const QString &label, bool isMine, const QString &purpose, int status);
-    /* Watchonly added */
+    /* Watch-only added */
     void updateWatchOnlyFlag(bool fHaveWatchonly);
     /* Current, immature or unconfirmed balance might have changed - emit 'balanceChanged' if so */
     void pollBalanceChanged();