refactored example_button_images.py to class structure

test/manual_integration_tests/test_ctk_toplevel.py

@@ -1,22 +1,40 @@
 import customtkinter
 
 
-class ExampleApp(customtkinter.CTk):
-    def __init__(self, *args, **kwargs):
+class ToplevelWindow(customtkinter.CTkToplevel):
+    def __init__(self, *args, closing_event=None, **kwargs):
         super().__init__(*args, **kwargs)
+        self.protocol("WM_DELETE_WINDOW", self.closing)
+        self.geometry("500x300")
+        self.closing_event = closing_event
 
+        self.label = customtkinter.CTkLabel(self, text="ToplevelWindow")
+        self.label.pack(padx=20, pady=20)
+
+    def closing(self):
+        self.destroy()
+        if self.closing_event is not None:
+            self.closing_event()
+
+
+class App(customtkinter.CTk):
+    def __init__(self):
+        super().__init__()
         self.geometry("500x400")
 
-        self.button_1 = customtkinter.CTkButton(self, text="Create CTkToplevel", command=self.create_toplevel)
+        self.button_1 = customtkinter.CTkButton(self, text="Open CTkToplevel", command=self.open_toplevel)
         self.button_1.pack(side="top", padx=40, pady=40)
 
-    def create_toplevel(self):
-        window = customtkinter.CTkToplevel(self)
-        window.geometry("400x200")
+        self.toplevel_window = None
 
-        label = customtkinter.CTkLabel(window, text="CTkToplevel window")
-        label.pack(side="top", fill="both", expand=True, padx=40, pady=40)
+    def open_toplevel(self):
+        if self.toplevel_window is None:  # create toplevel window only if not already open
+            self.toplevel_window = ToplevelWindow(self, closing_event=self.toplevel_close_event)
+
+    def toplevel_close_event(self):
+        self.toplevel_window = None
 
 
-app = ExampleApp()
-app.mainloop()
+if __name__ == "__main__":
+    app = App()
+    app.mainloop()