Merge #408: Disable updating unspendable names

b59ad07 Namecoin / Qt: Disable Renew/Configure for unspendable names (Jeremy Rand)

Pull request description:

  This PR disables the "Configure" and "Renew" options for names that are unspendable due to expiration or transfer.

ACKs for top commit:
  domob1812:
    ACK b59ad07.

Tree-SHA512: 56de9a7836f5ec285ad502c47e05903bef7d27275ba6cd217849310b5f77d835025376c2eee7dd62ff2cdcded28a2caf2f7991519381f599a00b67be9fa140ca

src/qt/managenamespage.cpp

@@ -107,18 +107,30 @@ void ManageNamesPage::selectionChanged()
 
     QModelIndexList indexes = GUIUtil::getEntryData(ui->tableView, NameTableModel::Name);
 
+    bool anyUnspendableSelected = false;
+    for (const QModelIndex& index : indexes)
+    {
+        const std::string &status = index.sibling(index.row(), NameTableModel::NameStatus).data(Qt::EditRole).toString().toStdString();
+
+        if (status == NameTableEntry::NAME_STATUS_EXPIRED || status == NameTableEntry::NAME_STATUS_TRANSFERRED_OUT)
+        {
+            anyUnspendableSelected = true;
+            break;
+        }
+    }
+
     const bool singleNameSelected = indexes.size() == 1;
     const bool anyNamesSelected = indexes.size() >= 1;
 
     // Context menu
     copyNameAction->setEnabled(singleNameSelected);
     copyValueAction->setEnabled(singleNameSelected);
-    configureNameAction->setEnabled(singleNameSelected);
-    renewNameAction->setEnabled(anyNamesSelected);
+    configureNameAction->setEnabled(singleNameSelected && !anyUnspendableSelected);
+    renewNameAction->setEnabled(anyNamesSelected && !anyUnspendableSelected);
 
     // Buttons
-    ui->configureNameButton->setEnabled(singleNameSelected);
-    ui->renewNameButton->setEnabled(anyNamesSelected);
+    ui->configureNameButton->setEnabled(configureNameAction->isEnabled());
+    ui->renewNameButton->setEnabled(renewNameAction->isEnabled());
 }
 
 void ManageNamesPage::contextualMenu(const QPoint &point)