Gui

def run_gui() -> None:
    """Run the equities classifier GUI."""

    sg.theme("SystemDefault")

    layout = [
        [
            sg.Text("Equities Classifier", font=("Any", 16)),
        ],
        [
            sg.Text("Input file:", size=(14, 1)),
            sg.Input(key="-INPUT-", expand_x=True),
            sg.FileBrowse(
                "Select ...",
                target="-INPUT-",
                file_types=(("Excel files", "*.xlsx"), ("All files", "*.*")),
            ),
        ],
        [
            sg.Text("Output file:", size=(14, 1)),
            sg.Input(key="-OUTPUT-", expand_x=True),
            sg.FileSaveAs(
                "Select ...",
                target="-OUTPUT-",
                file_types=(("Excel files", "*.xlsx"),),
                default_extension=".xlsx",
            ),
        ],
        [
            sg.Frame(
                "Classification",
                [
                    [
                        sg.Checkbox("GECS", key="-GECS-"),
                        sg.Checkbox("GICS", key="-GICS-"),
                    ],
                ],
            ),
        ],
        [
            sg.Frame(
                "Additional output",
                [
                    [
                        sg.Checkbox("Detailed provider information", key="-PROVIDER-"),
                    ],
                ],
            ),
        ],
        [
            sg.Push(),
            sg.Button("Start", key="-START-", bind_return_key=True),
            sg.Button("Cancel", key="-CANCEL-"),
        ],
        [
            sg.Text("", key="-STATUS-", expand_x=True),
        ],
    ]

    window = sg.Window("Equities Classifier", layout, resizable=True, finalize=True)

    try:
        _event_loop(window)
    finally:
        window.close()