fix displaying enabled/disable mesh dataset group

python/core/auto_generated/mesh/qgsmeshdataset.sip.in

@@ -883,9 +883,18 @@ Returns the count of children
 
     int totalChildCount() const;
 %Docstring
-Returns the total count of children, that is included deeper children
+Returns the total count of children, that is included deeper children and disabled items
 
-:return:
+:return: the total children's count
+%End
+
+    QList<int> enabledDatasetGroupIndexes() const;
+%Docstring
+Returns a list of enabled dataset group indexes, included deeper children
+
+:return: the list of dataset group indexes
+
+.. versionadded:: 3.16.3
 %End
 
     QgsMeshDatasetGroupTreeItem *parentItem() const;

python/core/auto_generated/mesh/qgsmeshlayer.sip.in

@@ -271,6 +271,18 @@ Returns the list of indexes of dataset groups handled by the layer
    In the layer scope, those indexes can be different from the data provider indexes.
 
 .. versionadded:: 3.16
+%End
+
+    QList<int> enabledDatasetGroupsIndexes() const;
+%Docstring
+Returns the list of indexes of enables dataset groups handled by the layer
+
+.. note::
+
+   indexes are used to distinguish all the dataset groups handled by the layer (from dataprovider, extra dataset group,...)
+   In the layer scope, those indexes can be different from the data provider indexes.
+
+.. versionadded:: 3.16.3
 %End
 
     QgsMeshDatasetGroupMetadata datasetGroupMetadata( const QgsMeshDatasetIndex &index ) const;

src/core/mesh/qgsmeshdataset.cpp

@@ -590,6 +590,20 @@ int QgsMeshDatasetGroupTreeItem::totalChildCount() const
   return count;
 }
 
+QList<int> QgsMeshDatasetGroupTreeItem::enabledDatasetGroupIndexes() const
+{
+  QList<int> indexesList;
+
+  for ( int i = 0; i < mChildren.count(); ++i )
+  {
+    if ( mChildren.at( i )->isEnabled() )
+      indexesList.append( mChildren.at( i )->datasetGroupIndex() );
+    indexesList.append( mChildren.at( i )->enabledDatasetGroupIndexes() );
+  }
+
+  return indexesList;
+}
+
 QgsMeshDatasetGroupTreeItem *QgsMeshDatasetGroupTreeItem::parentItem() const
 {
   return mParent;

src/core/mesh/qgsmeshdataset.h

@@ -866,11 +866,19 @@ class CORE_EXPORT QgsMeshDatasetGroupTreeItem
     int childCount() const;
 
     /**
-     * Returns the total count of children, that is included deeper children
-     * \return
-     */
+    * Returns the total count of children, that is included deeper children and disabled items
+    * \return the total children's count
+    */
     int totalChildCount() const;
 
+    /**
+     * Returns a list of enabled dataset group indexes, included deeper children
+     * \return the list of dataset group indexes
+     *
+     * \since QGIS 3.16.3
+     */
+    QList<int> enabledDatasetGroupIndexes() const;
+
     /**
      * Returns the parent item, nullptr if it is root item
      * \return the parent item

src/core/mesh/qgsmeshdatasetgroupstore.cpp

@@ -27,6 +27,11 @@ QList<int> QgsMeshDatasetGroupStore::datasetGroupIndexes() const
   return mRegistery.keys();
 }
 
+QList<int> QgsMeshDatasetGroupStore::enabledDatasetGroupIndexes() const
+{
+  return mDatasetGroupTreeRootItem->enabledDatasetGroupIndexes();
+}
+
 int QgsMeshDatasetGroupStore::datasetGroupCount() const
 {
   return mRegistery.count();

src/core/mesh/qgsmeshdatasetgroupstore.h

@@ -156,6 +156,13 @@ class QgsMeshDatasetGroupStore: public QObject
     //! Returns a list of all group indexes
     QList<int> datasetGroupIndexes() const;
 
+    /**
+     * Returns a list of all group indexes that are enabled
+     *
+     * \since QGIS 3.16.3
+    */
+    QList<int> enabledDatasetGroupIndexes() const;
+
     //! Returns the count of dataset groups
     int datasetGroupCount() const;
 

src/core/mesh/qgsmeshlayer.cpp

@@ -359,6 +359,11 @@ QList<int> QgsMeshLayer::datasetGroupsIndexes() const
   return mDatasetGroupStore->datasetGroupIndexes();
 }
 
+QList<int> QgsMeshLayer::enabledDatasetGroupsIndexes() const
+{
+  return mDatasetGroupStore->enabledDatasetGroupIndexes();
+}
+
 QgsMeshDatasetGroupMetadata QgsMeshLayer::datasetGroupMetadata( const QgsMeshDatasetIndex &index ) const
 {
   return mDatasetGroupStore->datasetGroupMetadata( index );

src/core/mesh/qgsmeshlayer.h

@@ -344,6 +344,16 @@ class CORE_EXPORT QgsMeshLayer : public QgsMapLayer
      */
     QList<int> datasetGroupsIndexes() const;
 
+    /**
+     * Returns the list of indexes of enables dataset groups handled by the layer
+     *
+     * \note indexes are used to distinguish all the dataset groups handled by the layer (from dataprovider, extra dataset group,...)
+     * In the layer scope, those indexes can be different from the data provider indexes.
+     *
+     * \since QGIS 3.16.3
+     */
+    QList<int> enabledDatasetGroupsIndexes() const;
+
     /**
      * Returns the dataset groups metadata
      *

src/gui/mesh/qgsmeshdatasetgrouptreeview.cpp

@@ -494,17 +494,22 @@ void QgsMeshActiveDatasetGroupTreeView::setActiveGroup()
   setActiveVectorGroup( vectorGroup );
 }
 
+QgsMeshDatasetGroupListModel::QgsMeshDatasetGroupListModel( QObject *parent ): QAbstractListModel( parent )
+{}
+
 void QgsMeshDatasetGroupListModel::syncToLayer( QgsMeshLayer *layer )
 {
+  beginResetModel();
   if ( layer )
     mRootItem = layer->datasetGroupTreeRootItem();
+  endResetModel();
 }
 
 int QgsMeshDatasetGroupListModel::rowCount( const QModelIndex &parent ) const
 {
   Q_UNUSED( parent );
   if ( mRootItem )
-    return mRootItem->totalChildCount();
+    return mRootItem->enabledDatasetGroupIndexes().count();
   else
     return 0;
 }
@@ -517,7 +522,12 @@ QVariant QgsMeshDatasetGroupListModel::data( const QModelIndex &index, int role
   if ( index.row() >= rowCount( QModelIndex() ) )
     return QVariant();
 
-  QgsMeshDatasetGroupTreeItem *item = mRootItem->childFromDatasetGroupIndex( index.row() );
+  const QList<int> list = mRootItem->enabledDatasetGroupIndexes();
+  if ( index.row() >= list.count() )
+    return QVariant();
+
+  QgsMeshDatasetGroupTreeItem *item = mRootItem->childFromDatasetGroupIndex( list.at( index.row() ) );
+
   if ( !item )
     return QVariant();
 

src/gui/mesh/qgsmeshdatasetgrouptreeview.h

@@ -274,8 +274,7 @@ class GUI_EXPORT QgsMeshActiveDatasetGroupTreeView : public QTreeView
 class GUI_EXPORT QgsMeshDatasetGroupListModel: public QAbstractListModel
 {
   public:
-    explicit QgsMeshDatasetGroupListModel( QObject *parent ): QAbstractListModel( parent )
-    {}
+    explicit QgsMeshDatasetGroupListModel( QObject *parent );
 
     //! Add groups to the model from mesh layer
     void syncToLayer( QgsMeshLayer *layer );

src/gui/qgsmaptoolidentify.cpp

@@ -259,6 +259,7 @@ bool QgsMapToolIdentify::identifyMeshLayer( QList<QgsMapToolIdentify::IdentifyRe
   int activeScalarGroup = layer->rendererSettings().activeScalarDatasetGroup();
   int activeVectorGroup = layer->rendererSettings().activeVectorDatasetGroup();
 
+  const QList<int> allGroup = layer->enabledDatasetGroupsIndexes();
   if ( isTemporal ) //non active dataset group value are only accesible if temporal is active
   {
     const QgsDateTimeRange &time = identifyContext.temporalRange();
@@ -267,7 +268,6 @@ bool QgsMapToolIdentify::identifyMeshLayer( QList<QgsMapToolIdentify::IdentifyRe
     if ( activeVectorGroup >= 0 && activeVectorGroup != activeScalarGroup )
       datasetIndexList.append( layer->activeVectorDatasetAtTime( time ) );
 
-    const QList<int> allGroup = layer->datasetGroupsIndexes();
     for ( int groupIndex : allGroup )
     {
       if ( groupIndex != activeScalarGroup && groupIndex != activeVectorGroup )
@@ -276,10 +276,21 @@ bool QgsMapToolIdentify::identifyMeshLayer( QList<QgsMapToolIdentify::IdentifyRe
   }
   else
   {
+    // only active dataset group
     if ( activeScalarGroup >= 0 )
       datasetIndexList.append( layer->staticScalarDatasetIndex() );
     if ( activeVectorGroup >= 0 && activeVectorGroup != activeScalarGroup )
       datasetIndexList.append( layer->staticVectorDatasetIndex() );
+
+    // ...and static dataset group
+    for ( int groupIndex : allGroup )
+    {
+      if ( groupIndex != activeScalarGroup && groupIndex != activeVectorGroup )
+      {
+        if ( !layer->datasetGroupMetadata( groupIndex ).isTemporal() )
+          datasetIndexList.append( groupIndex );
+      }
+    }
   }
 
   //create results

tests/src/core/testqgsmeshlayer.cpp

@@ -1301,9 +1301,18 @@ void TestQgsMeshLayer::test_dataset_group_item_tree_item()
     QCOMPARE( rootItem->childFromDatasetGroupIndex( i )->name(), names.at( i ) );
 
   // Disable some items
+  QList<int> enabledList = rootItem->enabledDatasetGroupIndexes();
+  QCOMPARE( enabledList.count(), 22 );
+  QList<int> newList = enabledList;
+  newList.removeOne( 7 );
   rootItem->childFromDatasetGroupIndex( 7 )->setIsEnabled( false );
+  QCOMPARE( newList, rootItem->enabledDatasetGroupIndexes() );
+  newList.removeOne( 10 );
   rootItem->childFromDatasetGroupIndex( 10 )->setIsEnabled( false );
+  QCOMPARE( newList, rootItem->enabledDatasetGroupIndexes() );
+  newList.removeOne( 15 );
   rootItem->childFromDatasetGroupIndex( 15 )->setIsEnabled( false );
+  QCOMPARE( newList, rootItem->enabledDatasetGroupIndexes() );
 
   QDomDocument doc;
   QgsReadWriteContext context;