gtk4/subclass/
toggle_button.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 [`ToggleButton`](crate::ToggleButton).
5
6use glib::translate::*;
7
8use crate::{ffi, prelude::*, subclass::prelude::*, ToggleButton};
9
10pub trait ToggleButtonImpl: ToggleButtonImplExt + ButtonImpl {
11    /// Emits the ::toggled signal on the [`ToggleButton`][crate::ToggleButton].
12    ///
13    /// # Deprecated since 4.10
14    ///
15    /// There is no good reason for an application ever to call this function.
16    fn toggled(&self) {
17        self.parent_toggled()
18    }
19}
20
21mod sealed {
22    pub trait Sealed {}
23    impl<T: super::ToggleButtonImplExt> Sealed for T {}
24}
25
26pub trait ToggleButtonImplExt: sealed::Sealed + ObjectSubclass {
27    fn parent_toggled(&self) {
28        unsafe {
29            let data = Self::type_data();
30            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkToggleButtonClass;
31            if let Some(f) = (*parent_class).toggled {
32                f(self
33                    .obj()
34                    .unsafe_cast_ref::<ToggleButton>()
35                    .to_glib_none()
36                    .0)
37            }
38        }
39    }
40}
41
42impl<T: ToggleButtonImpl> ToggleButtonImplExt for T {}
43
44unsafe impl<T: ToggleButtonImpl> IsSubclassable<T> for ToggleButton {
45    fn class_init(class: &mut glib::Class<Self>) {
46        Self::parent_class_init::<T>(class);
47
48        let klass = class.as_mut();
49        klass.toggled = Some(toggle_button_toggled::<T>);
50    }
51}
52
53unsafe extern "C" fn toggle_button_toggled<T: ToggleButtonImpl>(ptr: *mut ffi::GtkToggleButton) {
54    let instance = &*(ptr as *mut T::Instance);
55    let imp = instance.imp();
56
57    imp.toggled()
58}