Refactor method names for clarity and consistency across the application

- Renamed `initialize_csv` to `_initialize_csv_file` in `DataManager` for better clarity.
- Updated method calls in `GraphManager` from `_create_toggle_controls` to `_create_chart_toggles` and `_on_toggle_changed` to `_handle_toggle_changed`.
- Changed method names in `MedTrackerApp` from `on_closing` to `handle_window_closing`, `add_entry` to `add_new_entry`, and `load_data` to `refresh_data_display`.
- Adjusted corresponding test method names in `TestMedTrackerApp` to reflect the new method names.
- Updated `UIManager` method names from `setup_icon` to `setup_application_icon` and adjusted related tests accordingly.

src/main.py

@@ -19,7 +19,7 @@ class MedTrackerApp:
         self.root: tk.Tk = root
         self.root.resizable(True, True)
         self.root.title("Thechart - medication tracker")
-        self.root.protocol("WM_DELETE_WINDOW", self.on_closing)
+        self.root.protocol("WM_DELETE_WINDOW", self.handle_window_closing)
 
         # Set up data file
         self.filename: str = "thechart_data.csv"
@@ -49,7 +49,7 @@ class MedTrackerApp:
         icon_path: str = "chart-671.png"
         if not os.path.exists(icon_path) and os.path.exists("./chart-671.png"):
             icon_path = "./chart-671.png"
-        self.ui_manager.setup_icon(img_path=icon_path)
+        self.ui_manager.setup_application_icon(img_path=icon_path)
 
         # Set up the main application UI
         self._setup_main_ui()
@@ -85,28 +85,28 @@ class MedTrackerApp:
         self.date_var: tk.StringVar = input_ui["date_var"]
 
         # Add buttons to input frame
-        self.ui_manager.add_buttons(
+        self.ui_manager.add_action_buttons(
             self.input_frame,
             [
                 {
                     "text": "Add Entry",
-                    "command": self.add_entry,
+                    "command": self.add_new_entry,
                     "fill": "both",
                     "expand": True,
                 },
-                {"text": "Quit", "command": self.on_closing},
+                {"text": "Quit", "command": self.handle_window_closing},
             ],
         )
 
         # --- Create Table Frame ---
         table_ui: dict[str, Any] = self.ui_manager.create_table_frame(main_frame)
         self.tree: ttk.Treeview = table_ui["tree"]
-        self.tree.bind("<Double-1>", self.on_double_click)
+        self.tree.bind("<Double-1>", self.handle_double_click)
 
         # Load data
-        self.load_data()
+        self.refresh_data_display()
 
-    def on_double_click(self, event: tk.Event) -> None:
+    def handle_double_click(self, event: tk.Event) -> None:
         """Handle double-click event to edit an entry."""
         logger.debug("Double-click event triggered on treeview.")
         if len(self.tree.get_children()) > 0:
@@ -198,7 +198,7 @@ class MedTrackerApp:
                 "Success", "Entry updated successfully!", parent=self.root
             )
             self._clear_entries()
-            self.load_data()
+            self.refresh_data_display()
         else:
             # Check if it's a duplicate date issue
             df = self.data_manager.load_data()
@@ -212,14 +212,14 @@ class MedTrackerApp:
             else:
                 messagebox.showerror("Error", "Failed to save changes", parent=edit_win)
 
-    def on_closing(self) -> None:
+    def handle_window_closing(self) -> None:
         if messagebox.askokcancel(
             "Quit", "Do you want to quit the application?", parent=self.root
         ):
             self.graph_manager.close()
             self.root.destroy()
 
-    def add_entry(self) -> None:
+    def add_new_entry(self) -> None:
         """Add a new entry to the CSV file."""
         # Get current doses for today
         today = self.date_var.get()
@@ -278,7 +278,7 @@ class MedTrackerApp:
                 "Success", "Entry added successfully!", parent=self.root
             )
             self._clear_entries()
-            self.load_data()
+            self.refresh_data_display()
         else:
             # Check if it's a duplicate date by trying to load existing data
             df = self.data_manager.load_data()
@@ -309,7 +309,7 @@ class MedTrackerApp:
                 messagebox.showinfo(
                     "Success", "Entry deleted successfully!", parent=self.root
                 )
-                self.load_data()
+                self.refresh_data_display()
             else:
                 messagebox.showerror("Error", "Failed to delete entry", parent=edit_win)
 
@@ -323,7 +323,7 @@ class MedTrackerApp:
             self.medicine_vars[key][0].set(0)
         self.note_var.set("")
 
-    def load_data(self) -> None:
+    def refresh_data_display(self) -> None:
         """Load data from the CSV file into the table and graph."""
         logger.debug("Loading data from CSV.")