Implemented most of the api placeholders

frontend/workspace.py

@@ -123,10 +123,10 @@ class WorkSpaceFrame(tk.Frame):
         # data
         self.lists = user.fetchUserLists()
 
-        text = tk.Text(self, width=15, height=1)
-        text.pack(anchor="sw")
+        self.add_list_text = tk.Text(self, width=15, height=1)
+        self.add_list_text.pack(anchor="sw")
 
-        add = tk.Button(self, text="Добавить лист", command=placeholder)
+        add = tk.Button(self, text="Добавить лист", command=self.add_list)
         add.pack(anchor="sw")
 
         # select list box
@@ -152,9 +152,26 @@ class WorkSpaceFrame(tk.Frame):
         # todo lists
         self.toToList = ToDoListWidget(self)
         self.toToList.pack(side="left", fill="both", expand=1)
+    
+    def add_list(self, *args):
+        text = self.add_list_text.get(1.0, "end").strip()
+        if len(text) == 0:
+            print("empty name! Not adding!")
+            return
+        self.user.appendUserList(title=text)
+        self.lists = self.user.fetchUserLists()
+        
+        # fill list box
+        self.listBox.delete(0,'end')
+        for item in self.lists:
+            s = f"{str(item)}: {item.created_at.strftime('%Y-%m-%d %H:%M:%S')}"
+            self.listBox.insert(tk.END, s)
+        self.listBox.pack()
+        len(self.lists) > 0 and self.listBox.selection_set(first=0)
+        
 
     def listBox_selected(self, *args):
-
+        
         self.toToList.clear()
 
         selection = self.listBox.curselection()