gtk4/
native_dialog.rs

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1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use std::{
4    cell::{Cell, RefCell},
5    future::Future,
6    pin::Pin,
7    rc::Rc,
8};
9
10use crate::{prelude::*, NativeDialog, ResponseType};
11
12// rustdoc-stripper-ignore-next
13/// Trait containing manually implemented methods of
14/// [`NativeDialog`](crate::NativeDialog).
15#[cfg_attr(feature = "v4_10", deprecated = "Since 4.10")]
16#[allow(deprecated)]
17pub trait NativeDialogExtManual: IsA<NativeDialog> {
18    // rustdoc-stripper-ignore-next
19    /// Shows the dialog and returns a `Future` that resolves to the
20    /// `ResponseType` on response.
21    ///
22    /// ```no_run
23    /// # use gtk4 as gtk;
24    /// use gtk::prelude::*;
25    ///
26    /// # async fn run() {
27    /// let dialog = gtk::FileChooserNative::builder()
28    ///     .title("Select a File")
29    ///     .build();
30    ///
31    /// dialog.run_future().await;
32    /// println!("Selected file: {:?}", dialog.file());
33    /// dialog.destroy();
34    /// # }
35    /// ```
36    fn run_future<'a>(&'a self) -> Pin<Box<dyn Future<Output = ResponseType> + 'a>> {
37        Box::pin(async move {
38            let (sender, receiver) = futures_channel::oneshot::channel();
39
40            let sender = Cell::new(Some(sender));
41
42            let response_handler = self.connect_response(move |_, response_type| {
43                if let Some(m) = sender.replace(None) {
44                    let _result = m.send(response_type);
45                }
46            });
47
48            self.show();
49
50            if let Ok(response) = receiver.await {
51                self.disconnect(response_handler);
52                response
53            } else {
54                ResponseType::None
55            }
56        })
57    }
58
59    // rustdoc-stripper-ignore-next
60    /// Shows the dialog and calls the callback when a response has been
61    /// received.
62    ///
63    /// **Important**: this function isn't blocking.
64    ///
65    /// ```no_run
66    /// # use gtk4 as gtk;
67    /// use gtk::prelude::*;
68    ///
69    /// let dialog = gtk::FileChooserNative::builder()
70    ///     .title("Select a File")
71    ///     .build();
72    ///
73    /// dialog.run_async(move |obj, answer| {
74    ///     obj.destroy();
75    ///     println!("Selected file: {:?}", obj.file());
76    /// });
77    /// ```
78    fn run_async<F: FnOnce(&Self, ResponseType) + 'static>(&self, f: F) {
79        let response_handler = Rc::new(RefCell::new(None));
80        let response_handler_clone = response_handler.clone();
81        let f = RefCell::new(Some(f));
82        *response_handler.borrow_mut() = Some(self.connect_response(move |s, response_type| {
83            if let Some(handler) = response_handler_clone.borrow_mut().take() {
84                s.disconnect(handler);
85            }
86            (*f.borrow_mut()).take().expect("cannot get callback")(s, response_type);
87        }));
88        self.show();
89    }
90}
91
92impl<O: IsA<NativeDialog>> NativeDialogExtManual for O {}
gtk4/native_dialog.rs

gtk4/
native_dialog.rs
