relm4/typed_view/
iterator.rs

1use std::any::Any;
2
3use super::{
4    TypedListItem,
5    column::TypedColumnView,
6    grid::{RelmGridItem, TypedGridView},
7    list::{RelmListItem, TypedListView},
8    selection_ext::RelmSelectionExt,
9};
10
11#[derive(Debug)]
12/// Holds the state for iterating [`TypedListItem`]s of [`TypedListView`],
13/// [`TypedGridView`] or [`TypedColumnView`].
14pub struct TypedIterator<'a, T> {
15    pub(super) list: &'a T,
16    pub(super) index: u32,
17}
18
19impl<T, S> Iterator for TypedIterator<'_, TypedColumnView<T, S>>
20where
21    T: Any,
22    S: RelmSelectionExt,
23{
24    type Item = TypedListItem<T>;
25
26    fn next(&mut self) -> Option<Self::Item> {
27        if self.index < self.list.len() {
28            let result = self.list.get(self.index);
29            self.index += 1;
30            result
31        } else {
32            None
33        }
34    }
35}
36
37impl<T, S> Iterator for TypedIterator<'_, TypedGridView<T, S>>
38where
39    T: RelmGridItem + Ord,
40    S: RelmSelectionExt,
41{
42    type Item = TypedListItem<T>;
43
44    fn next(&mut self) -> Option<Self::Item> {
45        if self.index < self.list.len() {
46            let result = self.list.get(self.index);
47            self.index += 1;
48            result
49        } else {
50            None
51        }
52    }
53}
54
55impl<T, S> Iterator for TypedIterator<'_, TypedListView<T, S>>
56where
57    T: RelmListItem,
58    S: RelmSelectionExt,
59{
60    type Item = TypedListItem<T>;
61
62    fn next(&mut self) -> Option<Self::Item> {
63        if self.index < self.list.len() {
64            let result = self.list.get(self.index);
65            self.index += 1;
66            result
67        } else {
68            None
69        }
70    }
71}
relm4/typed_view/iterator.rs

relm4/typed_view/
iterator.rs
