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use crate::subclass::prelude::*;
use crate::{Ordering, Sorter, SorterOrder};
use glib::translate::*;
use glib::{Cast, Object};
pub trait SorterImpl: SorterImplExt + ObjectImpl {
fn compare(&self, item1: &Object, item2: &Object) -> Ordering {
self.parent_compare(item1, item2)
}
#[doc(alias = "get_order")]
fn order(&self) -> SorterOrder {
self.parent_order()
}
}
pub trait SorterImplExt: ObjectSubclass {
fn parent_compare(&self, item1: &Object, item2: &Object) -> Ordering;
fn parent_order(&self) -> SorterOrder;
}
impl<T: SorterImpl> SorterImplExt for T {
fn parent_compare(&self, item1: &Object, item2: &Object) -> Ordering {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkSorterClass;
let f = (*parent_class)
.compare
.expect("No parent class impl for \"compare\"");
from_glib(f(
self.obj().unsafe_cast_ref::<Sorter>().to_glib_none().0,
item1.to_glib_none().0,
item2.to_glib_none().0,
))
}
}
fn parent_order(&self) -> SorterOrder {
unsafe {
let data = T::type_data();
let parent_class = data.as_ref().parent_class() as *mut ffi::GtkSorterClass;
let f = (*parent_class)
.get_order
.expect("No parent class impl for \"get_order\"");
from_glib(f(self.obj().unsafe_cast_ref::<Sorter>().to_glib_none().0))
}
}
}
unsafe impl<T: SorterImpl> IsSubclassable<T> for Sorter {
fn class_init(class: &mut glib::Class<Self>) {
Self::parent_class_init::<T>(class);
assert!(
crate::rt::is_initialized(),
"GTK has to be initialized first"
);
let klass = class.as_mut();
klass.compare = Some(sorter_compare::<T>);
klass.get_order = Some(sorter_get_order::<T>);
}
}
unsafe extern "C" fn sorter_compare<T: SorterImpl>(
ptr: *mut ffi::GtkSorter,
item1ptr: *mut glib::gobject_ffi::GObject,
item2ptr: *mut glib::gobject_ffi::GObject,
) -> ffi::GtkOrdering {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.compare(&from_glib_borrow(item1ptr), &from_glib_borrow(item2ptr))
.into_glib()
}
unsafe extern "C" fn sorter_get_order<T: SorterImpl>(
ptr: *mut ffi::GtkSorter,
) -> ffi::GtkSorterOrder {
let instance = &*(ptr as *mut T::Instance);
let imp = instance.imp();
imp.order().into_glib()
}