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::object::IsA;
6use glib::subclass::prelude::*;
7
8use glib::object::Cast;
9
10use super::window::WindowImpl;
11use crate::ResponseType;
12use crate::{Dialog, ffi};
13
14pub trait DialogImpl: WindowImpl + ObjectSubclass<Type: IsA<Dialog>> {
15    /// Emits the [`response`][struct@crate::Dialog#response] signal with the given response ID.
16    /// Used to indicate that the user has responded to the dialog in some way;
17    /// typically either you or [`DialogExt::run()`][crate::prelude::DialogExt::run()] will be monitoring the
18    /// ::response signal and take appropriate action.
19    /// ## `response_id`
20    /// response ID
21    fn response(&self, response: ResponseType) {
22        self.parent_response(response)
23    }
24
25    /// Signal emitted when the user uses a keybinding to close the dialog.
26    fn close(&self) {
27        self.parent_close()
28    }
29}
30
31pub trait DialogImplExt: DialogImpl {
32    fn parent_response(&self, response: ResponseType) {
33        unsafe {
34            let data = Self::type_data();
35            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkDialogClass;
36            if let Some(f) = (*parent_class).response {
37                f(
38                    self.obj().unsafe_cast_ref::<Dialog>().to_glib_none().0,
39                    response.into_glib(),
40                )
41            }
42        }
43    }
44    fn parent_close(&self) {
45        unsafe {
46            let data = Self::type_data();
47            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkDialogClass;
48            if let Some(f) = (*parent_class).close {
49                f(self.obj().unsafe_cast_ref::<Dialog>().to_glib_none().0)
50            }
51        }
52    }
53}
54
55impl<T: DialogImpl> DialogImplExt for T {}
56
57unsafe impl<T: DialogImpl> IsSubclassable<T> for Dialog {
58    fn class_init(class: &mut ::glib::Class<Self>) {
59        Self::parent_class_init::<T>(class);
60
61        if !crate::rt::is_initialized() {
62            panic!("GTK has to be initialized first");
63        }
64
65        let klass = class.as_mut();
66        klass.response = Some(dialog_response::<T>);
67        klass.close = Some(dialog_close::<T>);
68    }
69}
70
71unsafe extern "C" fn dialog_response<T: DialogImpl>(ptr: *mut ffi::GtkDialog, responseptr: i32) {
72    unsafe {
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}
80
81unsafe extern "C" fn dialog_close<T: DialogImpl>(ptr: *mut ffi::GtkDialog) {
82    unsafe {
83        let instance = &*(ptr as *mut T::Instance);
84        let imp = instance.imp();
85
86        imp.close()
87    }
88}
gtk/subclass/dialog.rs

gtk/subclass/
dialog.rs
