gtk/subclass/
dialog.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use glib::translate::*;
4
5use glib::subclass::prelude::*;
6
7use glib::object::Cast;
8
9use super::window::WindowImpl;
10use crate::ResponseType;
11use crate::{Dialog, ffi};
12
13pub trait DialogImpl: DialogImplExt + WindowImpl {
14    /// Emits the [`response`][struct@crate::Dialog#response] signal with the given response ID.
15    /// Used to indicate that the user has responded to the dialog in some way;
16    /// typically either you or [`DialogExt::run()`][crate::prelude::DialogExt::run()] will be monitoring the
17    /// ::response signal and take appropriate action.
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::DialogImpl> Sealed for T {}
33}
34
35pub trait DialogImplExt: ObjectSubclass + sealed::Sealed {
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    fn parent_close(&self) {
49        unsafe {
50            let data = Self::type_data();
51            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkDialogClass;
52            if let Some(f) = (*parent_class).close {
53                f(self.obj().unsafe_cast_ref::<Dialog>().to_glib_none().0)
54            }
55        }
56    }
57}
58
59impl<T: DialogImpl> DialogImplExt for T {}
60
61unsafe impl<T: DialogImpl> IsSubclassable<T> for Dialog {
62    fn class_init(class: &mut ::glib::Class<Self>) {
63        Self::parent_class_init::<T>(class);
64
65        if !crate::rt::is_initialized() {
66            panic!("GTK has to be initialized first");
67        }
68
69        let klass = class.as_mut();
70        klass.response = Some(dialog_response::<T>);
71        klass.close = Some(dialog_close::<T>);
72    }
73}
74
75unsafe extern "C" fn dialog_response<T: DialogImpl>(ptr: *mut ffi::GtkDialog, responseptr: i32) {
76    unsafe {
77        let instance = &*(ptr as *mut T::Instance);
78        let imp = instance.imp();
79        let res: ResponseType = from_glib(responseptr);
80
81        imp.response(res)
82    }
83}
84
85unsafe extern "C" fn dialog_close<T: DialogImpl>(ptr: *mut ffi::GtkDialog) {
86    unsafe {
87        let instance = &*(ptr as *mut T::Instance);
88        let imp = instance.imp();
89
90        imp.close()
91    }
92}
gtk/subclass/dialog.rs

gtk/subclass/
dialog.rs
