dependencies = [
  "flet==0.28.3",
  "flet_permission_handler",
  "flet-open-file @ git+https://github.com/creeper19472/flet-open-file",
  "flet_model",
  "websockets",
  "pycryptodome",
  "cffi",
  "requests"
]

_cancel_button = ft.TextButton()

def _cancel_upload(e: ft.ControlEvent):
       _cancel_button.disabled = True
       page.update()

_ok_button = ft.TextButton(
        "确定",
        visible=False,
        on_click=lambda _: page.close(upload_dialog),
)

_cancel_button.on_click = _cancel_upload
_cancel_button.text = "取消"

upload_dialog = ft.AlertDialog(
            modal=True,
            title=ft.Text("批量上传"),
            content=ft.Column(
                controls=[progress_column],
                width=400,
                alignment=ft.MainAxisAlignment.CENTER,
                scroll=ft.ScrollMode.AUTO,
                expand=True,
            ),
            actions=[
                _ok_button,
                _cancel_button,
            ],
        )
page.open(upload_dialog)

_ok_button.visible = True
page.update()