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use iced::widget::{button, column, container};
use iced::{Alignment, Element, Length, Sandbox, Settings};

pub fn main() -> iced::Result {
    Exit::run(Settings::default())
}

#[derive(Default)]
struct Exit {
    show_confirm: bool,
    exit: bool,
}

#[derive(Debug, Clone, Copy)]
enum Message {
    Confirm,
    Exit,
}

impl Sandbox for Exit {
    type Message = Message;

    fn new() -> Self {
        Self::default()
    }

    fn title(&self) -> String {
        String::from("Exit - Iced")
    }

    fn should_exit(&self) -> bool {
        self.exit
    }

    fn update(&mut self, message: Message) {
        match message {
            Message::Confirm => {
                self.exit = true;
            }
            Message::Exit => {
                self.show_confirm = true;
            }
        }
    }

    fn view(&self) -> Element<Message> {
        let content = if self.show_confirm {
            column![
                "Are you sure you want to exit?",
                button("Yes, exit now")
                    .padding([10, 20])
                    .on_press(Message::Confirm),
            ]
        } else {
            column![
                "Click the button to exit",
                button("Exit").padding([10, 20]).on_press(Message::Exit),
            ]
        }
        .spacing(10)
        .align_items(Alignment::Center);

        container(content)
            .width(Length::Fill)
            .height(Length::Fill)
            .padding(20)
            .center_x()
            .center_y()
            .into()
    }
}