gtk4/subclass/
dialog.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3// rustdoc-stripper-ignore-next
4//! Traits intended for subclassing [`Dialog`](crate::Dialog).
5
6use glib::translate::*;
7
8use crate::{ffi, prelude::*, subclass::prelude::*, Dialog, ResponseType};
9
10pub trait DialogImpl: DialogImplExt + WindowImpl {
11    /// Emits the ::response signal with the given response ID.
12    ///
13    /// Used to indicate that the user has responded to the dialog in some way.
14    ///
15    /// # Deprecated since 4.10
16    ///
17    /// Use [`Window`][crate::Window] instead
18    /// ## `response_id`
19    /// response ID
20    fn response(&self, response: ResponseType) {
21        self.parent_response(response)
22    }
23
24    /// Signal emitted when the user uses a keybinding to close the dialog.
25    fn close(&self) {
26        self.parent_close()
27    }
28}
29
30mod sealed {
31    pub trait Sealed {}
32    impl<T: super::DialogImplExt> Sealed for T {}
33}
34
35pub trait DialogImplExt: sealed::Sealed + ObjectSubclass {
36    fn parent_response(&self, response: ResponseType) {
37        unsafe {
38            let data = Self::type_data();
39            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkDialogClass;
40            if let Some(f) = (*parent_class).response {
41                f(
42                    self.obj().unsafe_cast_ref::<Dialog>().to_glib_none().0,
43                    response.into_glib(),
44                )
45            }
46        }
47    }
48
49    fn parent_close(&self) {
50        unsafe {
51            let data = Self::type_data();
52            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkDialogClass;
53            if let Some(f) = (*parent_class).close {
54                f(self.obj().unsafe_cast_ref::<Dialog>().to_glib_none().0)
55            }
56        }
57    }
58}
59
60impl<T: DialogImpl> DialogImplExt for T {}
61
62unsafe impl<T: DialogImpl> IsSubclassable<T> for Dialog {
63    fn class_init(class: &mut glib::Class<Self>) {
64        Self::parent_class_init::<T>(class);
65
66        let klass = class.as_mut();
67        klass.response = Some(dialog_response::<T>);
68        klass.close = Some(dialog_close::<T>);
69    }
70}
71
72unsafe extern "C" fn dialog_response<T: DialogImpl>(ptr: *mut ffi::GtkDialog, responseptr: i32) {
73    let instance = &*(ptr as *mut T::Instance);
74    let imp = instance.imp();
75    let res: ResponseType = from_glib(responseptr);
76
77    imp.response(res)
78}
79
80unsafe extern "C" fn dialog_close<T: DialogImpl>(ptr: *mut ffi::GtkDialog) {
81    let instance = &*(ptr as *mut T::Instance);
82    let imp = instance.imp();
83
84    imp.close()
85}