Add ValueRank and ArrayDimensions to OpcUaNodeInfo

Read both attributes at node setup alongside the existing metadata.
ValueRank is mapped to human-readable names (Scalar, OneDimension, etc.)
and ArrayDimensions is formatted as a comma-separated size list.
Both are shown in the demo tooltip.

3 files changed, 47 insertions, 0 deletions

diff --git a/demo/NodePage.qml b/demo/NodePage.qml
index 9b23502..e089f0e 100644
--- a/demo/NodePage.qml
+++ b/demo/NodePage.qml
@@ -307,6 +307,8 @@ Page {
                     + "\nDescription: " + (node.info.description || "—")
                     + "\nNode Class: " + (node.info.nodeClass || "—")
                     + "\nData Type: " + (node.info.dataType || "—")
+                    + "\nValue Rank: " + (node.info.valueRank || "—")
+                    + "\nArray Dimensions: " + (node.info.arrayDimensions || "—")
                     + "\nAccess Level: " + node.info.accessLevel
                     + "\nStatus: " + (node.info.status || "—")
                     + "\nSource Time: " + (node.info.sourceTimestamp.toLocaleString() || "—")
diff --git a/src/OpcUaMonitoredNode.cpp b/src/OpcUaMonitoredNode.cpp
index c5f1dc0..9155838 100644
--- a/src/OpcUaMonitoredNode.cpp
+++ b/src/OpcUaMonitoredNode.cpp
@@ -155,6 +155,8 @@ OpcUaMonitoredNode::setupNode ()
   m_node->readAttributes (
       QOpcUa::NodeAttribute::DisplayName | QOpcUa::NodeAttribute::Description
       | QOpcUa::NodeAttribute::NodeClass | QOpcUa::NodeAttribute::DataType
+      | QOpcUa::NodeAttribute::ValueRank
+      | QOpcUa::NodeAttribute::ArrayDimensions
       | QOpcUa::NodeAttribute::AccessLevel);
 
   if (m_monitored)
@@ -238,6 +240,45 @@ OpcUaMonitoredNode::handleAttributeUpdated (QOpcUa::NodeAttribute attr,
           m_info.dataType = rawId;
       }
       break;
+    case QOpcUa::NodeAttribute::ValueRank:
+      {
+        qint32 vr = value.toInt ();
+        switch (vr)
+          {
+          case -3:
+            m_info.valueRank = QStringLiteral ("ScalarOrOneDimension");
+            break;
+          case -2:
+            m_info.valueRank = QStringLiteral ("Any");
+            break;
+          case -1:
+            m_info.valueRank = QStringLiteral ("Scalar");
+            break;
+          case 0:
+            m_info.valueRank = QStringLiteral ("OneOrMoreDimensions");
+            break;
+          case 1:
+            m_info.valueRank = QStringLiteral ("OneDimension");
+            break;
+          case 2:
+            m_info.valueRank = QStringLiteral ("TwoDimensions");
+            break;
+          default:
+            m_info.valueRank = QString::number (vr)
+                               + QStringLiteral ("Dimensions");
+            break;
+          }
+      }
+      break;
+    case QOpcUa::NodeAttribute::ArrayDimensions:
+      {
+        QStringList dims;
+        const QVariantList list = value.toList ();
+        for (const QVariant &dim : list)
+          dims << QString::number (dim.toUInt ());
+        m_info.arrayDimensions = dims.join (QStringLiteral (", "));
+      }
+      break;
     case QOpcUa::NodeAttribute::AccessLevel:
       {
         quint32 bits = value.toUInt ();
diff --git a/src/OpcUaMonitoredNode.h b/src/OpcUaMonitoredNode.h
index 2ecffb7..3314874 100644
--- a/src/OpcUaMonitoredNode.h
+++ b/src/OpcUaMonitoredNode.h
@@ -30,6 +30,8 @@ struct OpcUaNodeInfo
   Q_PROPERTY (QString description MEMBER description)
   Q_PROPERTY (QString nodeClass MEMBER nodeClass)
   Q_PROPERTY (QString dataType MEMBER dataType)
+  Q_PROPERTY (QString valueRank MEMBER valueRank)
+  Q_PROPERTY (QString arrayDimensions MEMBER arrayDimensions)
   Q_PROPERTY (QString accessLevel MEMBER accessLevel)
   Q_PROPERTY (QString status MEMBER status)
   Q_PROPERTY (QDateTime sourceTimestamp MEMBER sourceTimestamp)
@@ -40,6 +42,8 @@ public:
   QString description;
   QString nodeClass;
   QString dataType;
+  QString valueRank;
+  QString arrayDimensions;
   QString accessLevel;
   QString status;
   QDateTime sourceTimestamp;