Convert string2num during export

- This PR enables the conversion from string to num wherever possible
upon clicking on export before validating. Previously, this conversion
was only enabled while changing between EDIT and VIEW mode.

Author: dragos-ana

src/fourc_webviewer/fourc_webserver.py

@@ -1012,16 +1012,8 @@ def change_edit_mode(self, edit_mode, **kwargs):
         if (
             edit_mode == self.state.all_edit_modes["view_mode"]
         ):  # after edit mode we are again in view mode
-            self.state.general_sections = convert_string2number(
-                self.state.general_sections
-            )
-            self.state.materials_section = convert_string2number(
-                self.state.materials_section
-            )
-            self.state.dc_sections = convert_string2number(self.state.dc_sections)
-            self.state.result_description_section = convert_string2number(
-                self.state.result_description_section
-            )
+            self.convert_string2num_all_sections() 
+    
             # for now we don't convert the function section, because it
             # works itself with strings, e.g.
             # 'SYMBOLIC_FUNCTION_OF_SPACE_TIME' is a string even if it
@@ -1034,6 +1026,8 @@ def change_export_mode(self, export_mode, **kwargs):
         """Reaction to change of state.export_mode."""
         # revert export status to "INFO"
         self.state.export_status = self.state.all_export_statuses["info"]
+        self.convert_string2num_all_sections() 
+ 
 
     """------------------- Controller functions -------------------"""
 
@@ -1111,6 +1105,21 @@ def click_save_button(self, **kwargs):
 
     """ --- Other helper functions"""
 
+    def convert_string2num_all_sections(self):
+        """Converts string to num wherever possible for all considered
+        sections."""
+        self.state.general_sections = convert_string2number(
+            self.state.general_sections
+        )
+        self.state.materials_section = convert_string2number(
+            self.state.materials_section
+        )
+        self.state.dc_sections = convert_string2number(self.state.dc_sections)
+        self.state.result_description_section = convert_string2number(
+            self.state.result_description_section
+        )
+
+
     def determine_master_mat_ind_for_current_selection(self):
         """Determines the real master/source material of the currently selected
         material. Accounts for CLONING MATERIAL MAP by going one step further

src/fourc_webviewer/gui_utils.py

@@ -414,7 +414,7 @@ def _prop_value_table():
                 html.Th(
                     "Property",
                     classes="text-center font-weight-bold",
-                )
+               )
                 html.Th(
                     "Value",
                     classes="text-center font-weight-bold",