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use crate::Ordering;
use glib::object::{Cast, IsA};
use glib::translate::*;
use std::fmt;
use std::mem;
use crate::{SortType, TreeIter, TreeModel, TreeSortable};
#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Hash)]
pub enum SortColumn {
#[doc(alias = "GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID")]
Default,
Index(u32),
}
#[doc(hidden)]
impl IntoGlib for SortColumn {
type GlibType = i32;
#[inline]
fn into_glib(self) -> i32 {
match self {
SortColumn::Default => ffi::GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID,
SortColumn::Index(x) => {
assert!(x <= i32::max_value() as u32, "column index is too big");
x as i32
}
}
}
}
#[doc(hidden)]
impl FromGlib<i32> for SortColumn {
#[inline]
unsafe fn from_glib(val: i32) -> Self {
skip_assert_initialized!();
match val {
ffi::GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID => Self::Default,
x => {
assert!(x >= 0, "invalid column index");
Self::Index(x as u32)
}
}
}
}
impl fmt::Display for SortColumn {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"SortColumn::{}",
match *self {
SortColumn::Default => "Default",
SortColumn::Index(_) => "Index",
}
)
}
}
pub trait TreeSortableExtManual: 'static {
#[doc(alias = "gtk_tree_sortable_set_default_sort_func")]
fn set_default_sort_func<F>(&self, sort_func: F)
where
F: Fn(&Self, &TreeIter, &TreeIter) -> Ordering + 'static;
#[doc(alias = "gtk_tree_sortable_set_sort_func")]
fn set_sort_func<F>(&self, sort_column_id: SortColumn, sort_func: F)
where
F: Fn(&Self, &TreeIter, &TreeIter) -> Ordering + 'static;
#[doc(alias = "gtk_tree_sortable_get_sort_column_id")]
#[doc(alias = "get_sort_column_id")]
fn sort_column_id(&self) -> Option<(SortColumn, SortType)>;
#[doc(alias = "gtk_tree_sortable_set_sort_column_id")]
fn set_sort_column_id(&self, sort_column_id: SortColumn, order: SortType);
#[doc(alias = "gtk_tree_sortable_set_sort_column_id")]
fn set_unsorted(&self);
}
unsafe extern "C" fn trampoline<T, F: Fn(&T, &TreeIter, &TreeIter) -> Ordering>(
this: *mut ffi::GtkTreeModel,
iter: *mut ffi::GtkTreeIter,
iter2: *mut ffi::GtkTreeIter,
f: glib::ffi::gpointer,
) -> i32
where
T: IsA<TreeSortable>,
{
let f: &F = &*(f as *const F);
f(
&TreeModel::from_glib_none(this).unsafe_cast(),
&from_glib_borrow(iter),
&from_glib_borrow(iter2),
)
.into_glib()
}
unsafe extern "C" fn destroy_closure<T, F: Fn(&T, &TreeIter, &TreeIter) -> Ordering>(
ptr: glib::ffi::gpointer,
) {
Box::<F>::from_raw(ptr as *mut _);
}
fn into_raw<F, T>(func: F) -> glib::ffi::gpointer
where
F: Fn(&T, &TreeIter, &TreeIter) -> Ordering + 'static,
{
skip_assert_initialized!();
let func: Box<F> = Box::new(func);
Box::into_raw(func) as glib::ffi::gpointer
}
impl<O: IsA<TreeSortable>> TreeSortableExtManual for O {
#[inline]
fn sort_column_id(&self) -> Option<(SortColumn, SortType)> {
unsafe {
let mut sort_column_id = mem::MaybeUninit::uninit();
let mut order = mem::MaybeUninit::uninit();
ffi::gtk_tree_sortable_get_sort_column_id(
self.as_ref().to_glib_none().0,
sort_column_id.as_mut_ptr(),
order.as_mut_ptr(),
);
let sort_column_id = sort_column_id.assume_init();
if sort_column_id != ffi::GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID {
Some((from_glib(sort_column_id), from_glib(order.assume_init())))
} else {
None
}
}
}
fn set_default_sort_func<F>(&self, sort_func: F)
where
F: Fn(&Self, &TreeIter, &TreeIter) -> Ordering + 'static,
{
unsafe {
ffi::gtk_tree_sortable_set_default_sort_func(
self.as_ref().to_glib_none().0,
Some(trampoline::<Self, F>),
into_raw(sort_func),
Some(destroy_closure::<Self, F>),
)
}
}
#[inline]
fn set_sort_column_id(&self, sort_column_id: SortColumn, order: SortType) {
unsafe {
ffi::gtk_tree_sortable_set_sort_column_id(
self.as_ref().to_glib_none().0,
sort_column_id.into_glib(),
order.into_glib(),
);
}
}
fn set_unsorted(&self) {
unsafe {
ffi::gtk_tree_sortable_set_sort_column_id(
self.as_ref().to_glib_none().0,
ffi::GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID,
SortType::Ascending.into_glib(),
);
}
}
fn set_sort_func<F>(&self, sort_column_id: SortColumn, sort_func: F)
where
F: Fn(&Self, &TreeIter, &TreeIter) -> Ordering + 'static,
{
unsafe {
ffi::gtk_tree_sortable_set_sort_func(
self.as_ref().to_glib_none().0,
sort_column_id.into_glib(),
Some(trampoline::<Self, F>),
into_raw(sort_func),
Some(destroy_closure::<Self, F>),
)
}
}
}
