Adding functionality to add default plot.

pynxtools_stm/reader.py

@@ -184,15 +184,15 @@ def get_appropriate_parser(self, eln_dict: Dict) -> Callable:
         return parser
 
 def set_default_group_for_each_group(template):
-    """Set default group for each group of data.
+    """Set default group for each group of Nexus file.
     Each group will have a \@default attrubute refering the immediate child group in a NeXus chain.
-
+    e.g. /@default = "entry1"
+        /entry1/@default = "data1"
+    
     Parameters
     ----------
     template : Template
         Template from filled from datafile and eln.
-    eln_dict : _type_
-        _description_
 
     Returns
     -------
@@ -212,10 +212,11 @@ def set_default_group_for_each_group(template):
     # "/abc[DATA]/XYe[anything]/mnf[MNYZ]/anything" -> ['DATA', 'anything', 'MNYZ']
     pattern = r'\[(.*?)\]'
 
+    entry_data_rnd = ""
     for template_concept, val in template.items():
-        groups_list = template_concept.split('/')
+        groups_list = template_concept.split("/")
         last_default_key = ""
-        if template_concept.endswith('/@default') and val:
+        if template_concept.endswith("/@default") and val:
             dflt_key_to_exist_grp[template_concept] = val
 
         for group in groups_list:
@@ -225,21 +226,58 @@ def set_default_group_for_each_group(template):
             if modified_name:
                 modified_name = modified_name[0]
             else:
-                modified_name = ""
-            # take only nxdata group
-            if group.startswith("DATA") or group.startswith("ENTRY"):
-                if not dflt_key_to_grp_li.get(f"{last_default_key}/@default", None):
-                    dflt_key_to_grp_li[f"{last_default_key}/@default"] = [modified_name]
-                else:
-                    dflt_key_to_grp_li[f"{last_default_key}/@default"].append(modified_name)
+                modified_name = group
+            last_default_atttr = f"{last_default_key}/@default"
+            if not dflt_key_to_grp_li.get(last_default_atttr, None):
+                dflt_key_to_grp_li[last_default_atttr] = {}
+                # Data groups
+                dflt_key_to_grp_li[last_default_atttr]['data'] = []
+                dflt_key_to_grp_li[last_default_atttr]['entry'] = []
+                # Other groupa
+                dflt_key_to_grp_li[last_default_atttr]['other'] = []
+
+            if template_concept.endswith("/@default"):
+                dflt_key_to_exist_grp[template_concept] = val
+
+            # Entry
+            if group.startswith("ENTRY"):
+                dflt_key_to_grp_li[last_default_atttr]["entry"].append(modified_name)
+            # Data
+            elif group.startswith("DATA"):
+                dflt_key_to_grp_li[last_default_atttr]["data"].append(modified_name)
+                if not entry_data_rnd:
+                    entry_data_rnd = modified_name
+            else:
+                dflt_key_to_grp_li[last_default_atttr]["other"].append(modified_name)
+
             last_default_key = last_default_key + "/" + group
+
     for deflt_key, value in dflt_key_to_grp_li.items():
         pre_defalt_grp = dflt_key_to_exist_grp.get(deflt_key, None)
+        # Verify if user added the group here
+        if not pre_defalt_grp:
+            if (pre_defalt_grp in value['entry']
+                or pre_defalt_grp in value["data"]
+                or pre_defalt_grp in value['other']):
+                continue
 
-        if not pre_defalt_grp or pre_defalt_grp not in value:
-            # Choose the first data or entry group for defalult view if not set by reader
-            # or if the group does not exist in the list of immediate child group
-            template[deflt_key] = value[0]
+        # Entry default group always a NXdata
+        entry_default = "/entry/@default"
+        if entry_default == deflt_key:
+            template[entry_default] = entry_data_rnd
+            continue
+
+        if value['entry']:
+            template[deflt_key] = value['entry'][0]
+        # Prioritize data group on other groups
+        elif value['data']:
+            template[deflt_key] = value['data'][0]
+            # Randomly choose a NXdata group for entry
+        elif value['other']:
+            template[deflt_key] = value['other'][0]
+        else:
+            template[deflt_key] = ""
+
 
 
 # pylint: disable=invalid-name, too-few-public-methods