Fix copyItemConfig type checking

bliss/flint/helper/model_helper.py

@@ -732,11 +732,9 @@ def copyItemsFromRoiNames(
 def copyItemConfig(sourceItem: plot_model.Item, destinationItem: plot_model.Item):
     """Copy the configuration and the item tree from a source item to a
     destination item"""
-    if not isinstance(destinationItem, type(sourceItem)):
-        raise TypeError(
-            "Both items must have the same type. Found %s" % type(destinationItem)
-        )
-    if isinstance(sourceItem, plot_item_model.CurveItem):
+    if isinstance(sourceItem, plot_item_model.CurveItem) and isinstance(
+        destinationItem, plot_item_model.CurveItem
+    ):
         destinationItem.setVisible(sourceItem.isVisible())
         destinationItem.setYAxis(sourceItem.yAxis())
 
@@ -752,10 +750,16 @@ def copyItemConfig(sourceItem: plot_model.Item, destinationItem: plot_model.Item
                 newItem.setSource(destinationSource)
                 destinationPlot.addItem(newItem)
                 sourceToDest[item] = newItem
-    elif isinstance(sourceItem, plot_item_model.RoiItem):
+
+    elif isinstance(sourceItem, plot_item_model.RoiItem) and isinstance(
+        destinationItem, plot_item_model.RoiItem
+    ):
         destinationItem.setVisible(sourceItem.isVisible())
     else:
-        raise TypeError("Only available for curve item. Found %s" % type(sourceItem))
+        raise TypeError(
+            "No copy available from item type %s to %s"
+            % (type(sourceItem), type(destinationItem))
+        )
 
 
 def updateXAxis(

tests/qt/flint/helper/test_model_helper.py

@@ -843,6 +843,16 @@ def test_update_xaxis_with_index():
     assert items[0].yChannel().name() == "y1"
 
 
+def test_copy_config__with_xaxis_item():
+    """Check that we can copy config between 2 different kinds of CurveItem"""
+    plot = plot_item_model.CurvePlot()
+    i1 = add_item(plot, "x1", "y1")
+    i1.setYAxis("right")
+    i2 = add_item(plot, None, "y2", xIndex=True)
+    model_helper.copyItemConfig(i1, i2)
+    assert i2.yAxis() == "right"
+
+
 def test_update_xaxis_index_with_channel():
     plot = plot_item_model.CurvePlot()
     add_item(plot, None, "y1", xIndex=True)