From 75d77c39924629eaebf6b721a541407e19ced762 Mon Sep 17 00:00:00 2001
From: Thomas Vanbesien <tvanbesi@proton.me>
Date: Tue, 24 Feb 2026 16:51:15 +0100
Subject: 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.
---
 src/OpcUaMonitoredNode.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 src/OpcUaMonitoredNode.h   |  4 ++++
 2 files changed, 45 insertions(+)

(limited to 'src')

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;
-- 
cgit v1.2.3