gui: add Direction column to peers tab

Author: jonatack

src/qt/peertablemodel.cpp

@@ -28,6 +28,8 @@ bool NodeLessThan::operator()(const CNodeCombinedStats &left, const CNodeCombine
         return pLeft->nodeid < pRight->nodeid;
     case PeerTableModel::Address:
         return pLeft->addrName.compare(pRight->addrName) < 0;
+    case PeerTableModel::Direction:
+        return pLeft->fInbound > pRight->fInbound; // default sort Inbound, then Outbound
     case PeerTableModel::ConnectionType:
         return pLeft->m_conn_type < pRight->m_conn_type;
     case PeerTableModel::Network:
@@ -161,8 +163,12 @@ QVariant PeerTableModel::data(const QModelIndex &index, int role) const
         case NetNodeId:
             return (qint64)rec->nodeStats.nodeid;
         case Address:
-            // prepend to peer address down-arrow symbol for inbound connection and up-arrow for outbound connection
-            return QString(rec->nodeStats.fInbound ? "↓ " : "↑ ") + QString::fromStdString(rec->nodeStats.addrName);
+            return QString::fromStdString(rec->nodeStats.addrName);
+        case Direction:
+            // Prepend a down-arrow for an inbound peer and an up-arrow for an outbound peer.
+            return QString(rec->nodeStats.fInbound ? "↓ " : "↑ ")
+                   //: This word refers to the peer connection direction.
+                   + QString(rec->nodeStats.fInbound ? tr("Inbound") : tr("Outbound"));
         case ConnectionType:
             return GUIUtil::ConnectionTypeToQString(rec->nodeStats.m_conn_type, /* prepend_direction */ false);
         case Network:
@@ -182,6 +188,7 @@ QVariant PeerTableModel::data(const QModelIndex &index, int role) const
         case NetNodeId:
         case Address:
             return {};
+        case Direction:
         case ConnectionType:
         case Network:
             return QVariant(Qt::AlignCenter);

src/qt/peertablemodel.h

@@ -60,6 +60,7 @@ class PeerTableModel : public QAbstractTableModel
     enum ColumnIndex {
         NetNodeId = 0,
         Address,
+        Direction,
         ConnectionType,
         Network,
         Ping,
@@ -88,7 +89,8 @@ public Q_SLOTS:
 
 private:
     interfaces::Node& m_node;
-    const QStringList columns{tr("Peer Id"), tr("Address"), tr("Type"), tr("Network"), tr("Ping"), tr("Sent"), tr("Received"), tr("User Agent")};
+    /*: Column titles of the Peers tab window. */
+    const QStringList columns{tr("Peer Id"), tr("Address"), tr("Direction"), tr("Type"), tr("Network"), tr("Ping"), tr("Sent"), tr("Received"), tr("User Agent")};
     std::unique_ptr<PeerTablePriv> priv;
     QTimer *timer;
 };