Added Select() to the widgets for the sake of completedness

python/rdm_modules/form_from_dict.py

@@ -19,7 +19,7 @@
 
 from .rdm_help import rdmHelp
 from .rdm_widgets import (EntryBox, MultilineText,
-    FilePickerTextField, CheckBox, MultiSelect, DateRoller)
+    FilePickerTextField, CheckBox, MultiSelect, Select, DateRoller)
 
 
 class FormBuilder():
@@ -261,20 +261,14 @@ def add_content(self) -> None:
                     entry.set(v['value'])
 
             elif v['type'] == 'select':
-                entry = ttk.Combobox(frame)
-                # two parameters we need, they do not have:
-                entry.required = False
-                entry.error= False
+                entry = Select(frame, v['options'])
 
-                entry['values'] = v['options']
                 # make it read only, so user cannot insert new values
                 # alternative would be state 'normal'
-                entry['state'] = 'readonly'
                 if 'value' in v:
                     entry.set(v['value'])
-                else:
-                    entry.set(v['options'][0])
 
+                # required makes no sense here, but let it be:
                 if 'required' in v and v['required']:
                     entry.required = True
 

python/rdm_modules/rdm_widgets.py

@@ -422,12 +422,54 @@ def set(self, selected:list)->None:
             # this will throw a value error if the value is
             # not in the option list
             self.select.select_set(self.options.index(i))
-
     # end set
-
 # end class MultiSelect
 
 
+class Select():
+    """ a simple class to select an item from a list.
+        Basically for the sake of completedness,
+        a combo box.
+    """
+
+    def __init__(self,
+                 parent:tk.Misc,
+                 options:list) -> None:
+        """ Create a combo box with the list of options
+            in it.
+            Required is kind of unimportant here, since the
+            selector always stands on a value... so, it is
+            always set to something.
+        """
+        self.options = options
+        self.parent = parent
+        self.required= False
+        self.error = False
+
+        if self.parent is None:
+            self.parent = tk.Tk()
+        # end empty window
+        self.select = ttk.Combobox(self.parent)
+        self.select['values'] = options
+        self.select['state'] = 'readonly'
+        self.set(options[0])
+    # end __init__
+
+    def set(self, value):
+        self.select.set(value)
+    # end of set
+
+    def get(self):
+        return self.select.get()
+    # end of get
+
+    def grid(self, **kwargs):
+        self.select.grid(**kwargs)
+
+
+#end of class Select
+
+
 class DateRoller():
     """ a simple widget to set up a date using spin boxes