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use crate::ListStore;
use glib::translate::*;
use glib::{IsA, Object};
use std::cmp::Ordering;
pub trait ListStoreExtManual {
#[doc(alias = "g_list_store_insert_sorted")]
fn insert_sorted<P: IsA<glib::Object>, F: FnMut(&Object, &Object) -> Ordering>(
&self,
item: &P,
compare_func: F,
) -> u32;
#[doc(alias = "g_list_store_sort")]
fn sort<F: FnMut(&Object, &Object) -> Ordering>(&self, compare_func: F);
}
impl<O: IsA<ListStore>> ListStoreExtManual for O {
fn insert_sorted<P: IsA<glib::Object>, F: FnMut(&Object, &Object) -> Ordering>(
&self,
item: &P,
compare_func: F,
) -> u32 {
unsafe {
let mut func = compare_func;
let func_obj: &mut (dyn FnMut(&Object, &Object) -> Ordering) = &mut func;
let func_ptr = &func_obj as *const &mut (dyn FnMut(&Object, &Object) -> Ordering)
as glib::ffi::gpointer;
ffi::g_list_store_insert_sorted(
self.as_ref().to_glib_none().0,
item.as_ref().to_glib_none().0,
Some(compare_func_trampoline),
func_ptr,
)
}
}
fn sort<F: FnMut(&Object, &Object) -> Ordering>(&self, compare_func: F) {
unsafe {
let mut func = compare_func;
let func_obj: &mut (dyn FnMut(&Object, &Object) -> Ordering) = &mut func;
let func_ptr = &func_obj as *const &mut (dyn FnMut(&Object, &Object) -> Ordering)
as glib::ffi::gpointer;
ffi::g_list_store_sort(
self.as_ref().to_glib_none().0,
Some(compare_func_trampoline),
func_ptr,
)
}
}
}
unsafe extern "C" fn compare_func_trampoline(
a: glib::ffi::gconstpointer,
b: glib::ffi::gconstpointer,
func: glib::ffi::gpointer,
) -> i32 {
let func = func as *mut &mut (dyn FnMut(&Object, &Object) -> Ordering);
let a = from_glib_borrow(a as *mut glib::gobject_ffi::GObject);
let b = from_glib_borrow(b as *mut glib::gobject_ffi::GObject);
match (*func)(&a, &b) {
Ordering::Less => -1,
Ordering::Equal => 0,
Ordering::Greater => 1,
}
}