toxblh/podcasts
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Lazy_load: accept an iterator instead a Vec<_> over T.

Browse Source
This commit is contained in:
Jordan Petridis 2018-04-06 22:26:35 +03:00
parent 4d6c3a67b1
commit c79a92f3b2
No known key found for this signature in database
GPG Key ID: CEABAD9F5683B9A6
1 changed files with 12 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
hammond-gtk/src/widgets/episode.rs
View File

@ -383,7 +383,7 @@ pub fn episodes_listbox(pd: Arc<Podcast>, sender: Sender<Action>) -> Result<gtk:
Err(Disconnected) => return glib::Continue(false),
};
lazy_load(episodes, list.clone(), clone!(sender => move |ep| {
lazy_load(episodes.into_iter(), list.clone(), clone!(sender => move |ep| {
let w = EpisodeWidget::new(ep, sender.clone());
w.container.clone()
}));
@ -396,25 +396,21 @@ pub fn episodes_listbox(pd: Arc<Podcast>, sender: Sender<Action>) -> Result<gtk:
use gtk::{IsA, Widget};
fn lazy_load<T, U, P, Z>(mut data: Vec<T>, container: Z, mut predicate: P)
fn lazy_load<T, U, P, Z>(mut data: T, container: Z, mut predicate: P)
where
T: 'static,
T: Iterator + 'static,
T::Item: 'static,
Z: ContainerExt + 'static,
P: FnMut(T) -> U + 'static,
P: FnMut(T::Item) -> U + 'static,
U: IsA<Widget>,
{
// to use it as a stack
data.reverse();
gtk::idle_add(move || {
if data.is_empty() {
return glib::Continue(false);
}
data.pop().map(|x| {
let widget = predicate(x);
container.add(&widget);
});
glib::Continue(true)
data.next()
.and_then(|x| {
container.add(&predicate(x));
Some(glib::Continue(true))
})
.or(Some(glib::Continue(false)))
.unwrap()
});
}