Added Contact-Group deletion in ContactList and database

DataSources/dataSources.py

@@ -124,6 +124,12 @@ def Save(self, obj: IModel | GroupContacts):
             session.refresh(obj)
         self.dbEngineInstance.dispose()
 
+    def DeleteEntry(self, obj: IModel | GroupContacts):
+        Session = orm.sessionmaker(bind=self.dbEngineInstance)
+        with Session() as session:
+            session.delete(obj)
+            session.commit()
+
 class XLSXHandler(IDataSource):
     def __init__(self, path: str) -> None:
         self.file_path = path

group_controller.py

@@ -13,8 +13,13 @@ def add_contact(cls, g: Group, c: Contact) -> None:
         if g._add_contact(c):
             gc = GroupContacts(group_id=g.id, contact_id=c.email)
             cls.dbh.Save(gc)
-
-    # TODO delete contact binding?
+
+    @classmethod
+    def delete_connection(cls, g: Group, c: Contact) -> None:
+        connections :list[GroupContacts] = cls.dbh.GetData(GroupContacts, group_id=g.id, contact_id=c.email)
+        for con in connections:
+            cls.dbh.DeleteEntry(con)
+            del con
 
     @classmethod
     def get_contacts(cls, g: Group) -> list[Contact]:

interface.py

@@ -481,8 +481,10 @@ def prepareInterface(self):
     def update(self):
         if self.currentGroup:
             self.title(f"Edytuj grupę {self.currentGroup.name}")
-            self.name_entry.insert(INSERT, self.currentGroup.name)
+            self.name_entry.delete(0, END)
+            self.name_entry.insert(0, self.currentGroup.name)
             self.currentGroup.contacts = GroupController.get_contacts(self.currentGroup)
+            self.email_text.delete('1.0', END)  # Clear current content
             [self.add_contact(c) for c in self.currentGroup.contacts]
         else:
             self.title("Dodaj grupę")
@@ -594,8 +596,9 @@ def add_contact_to_group(self, c: Contact):
             pass
 
     def remove_contact_from_group(self, c: Contact):
-        # TODO usuwanie kontaktu z okienka grup odznaczajac chekboxa 
-        pass
+        GroupController.delete_connection(self.group, c)
+        if isinstance(self.parent, GroupEditor):
+            self.parent.update()
 
     def search_contact(self):
         search_criteria = self.search_entry.get().strip()