1use glib::object::Cast;
6use glib::translate::*;
7use glib_sys;
8use gtk_sys;
9use libc::c_int;
10use std::boxed::Box as Box_;
11use std::ptr;
12use IsA;
13use Menu;
14use Widget;
15
16pub trait GtkMenuExtManual: 'static {
17 fn popup<T: IsA<Widget>, U: IsA<Widget>, F: Fn(&Self, &mut i32, &mut i32) -> bool + 'static>(
18 &self,
19 parent_menu_shell: Option<&T>,
20 parent_menu_item: Option<&U>,
21 f: F,
22 button: u32,
23 activate_time: u32,
24 );
25
26 fn popup_easy(&self, button: u32, activate_time: u32);
27}
28
29impl<O: IsA<Menu>> GtkMenuExtManual for O {
30 fn popup<
31 T: IsA<Widget>,
32 U: IsA<Widget>,
33 F: FnOnce(&Self, &mut i32, &mut i32) -> bool + 'static,
34 >(
35 &self,
36 parent_menu_shell: Option<&T>,
37 parent_menu_item: Option<&U>,
38 f: F,
39 button: u32,
40 activate_time: u32,
41 ) {
42 unsafe extern "C" fn position_callback<
43 T,
44 F: FnOnce(&T, &mut i32, &mut i32) -> bool + 'static,
45 >(
46 this: *mut gtk_sys::GtkMenu,
47 x: *mut c_int,
48 y: *mut c_int,
49 push_in: *mut glib_sys::gboolean,
50 f: glib_sys::gpointer,
51 ) where
52 T: IsA<Menu>,
53 {
54 let mut f: Box<Option<F>> = Box::from_raw(f as *mut _);
55 let f = f.take().expect("No callback");
56 *push_in = f(
57 &Menu::from_glib_none(this).unsafe_cast(),
58 x.as_mut().unwrap(),
59 y.as_mut().unwrap(),
60 )
61 .to_glib();
62 }
63 unsafe {
64 let f: Box_<Option<F>> = Box_::new(Some(f));
65 gtk_sys::gtk_menu_popup(
66 self.as_ref().to_glib_none().0,
67 parent_menu_shell.map(|p| p.as_ref()).to_glib_none().0,
68 parent_menu_item.map(|p| p.as_ref()).to_glib_none().0,
69 Some(position_callback::<Self, F>),
70 Box_::into_raw(f) as *mut _,
71 button,
72 activate_time,
73 )
74 }
75 }
76
77 fn popup_easy(&self, button: u32, activate_time: u32) {
78 unsafe {
79 gtk_sys::gtk_menu_popup(
80 self.as_ref().to_glib_none().0,
81 ptr::null_mut(),
82 ptr::null_mut(),
83 None,
84 ptr::null_mut(),
85 button,
86 activate_time,
87 )
88 }
89 }
90}