ferroui_dynamic_data/cache/
immutable_group_change_set.rs

1//! `IImmutableGroupChangeSet<TObject, TKey, TGroupKey>` and `ImmutableGroupChangeSet<TObject,
2//! TKey, TGroupKey>` (`Cache/IImmutableGroupChangeSet.cs`, `Cache/Internal/ImmutableGroupChangeSet.cs`).
3
4use super::{Change, ChangeSet, IChangeSet, ImmutableGroup};
5use std::fmt;
6use std::ops::Deref;
7
8/// The changes of the states of the groups of a cache (`IImmutableGroupChangeSet<TObject, TKey,
9/// TGroupKey>`, a change set of `IGrouping<TObject, TKey, TGroupKey>` keyed by the group key): a
10/// group whose items change is updated with its new state.
11///
12/// As [`GroupChangeSet`](super::GroupChangeSet), it holds a plain change set of
13/// [`ImmutableGroup`]s, which [`Deref`] and [`IChangeSet`] give.
14pub struct ImmutableGroupChangeSet<T, K, G> {
15    changes: ChangeSet<ImmutableGroup<T, K, G>, G>,
16}
17
18impl<T, K, G> Clone for ImmutableGroupChangeSet<T, K, G> {
19    fn clone(&self) -> Self {
20        Self { changes: self.changes.clone() }
21    }
22}
23
24impl<T, K, G> Default for ImmutableGroupChangeSet<T, K, G> {
25    fn default() -> Self {
26        Self::empty()
27    }
28}
29
30impl<T, K, G> ImmutableGroupChangeSet<T, K, G> {
31    /// A change set without changes (`ImmutableGroupChangeSet<TObject, TKey, TGroupKey>.Empty`).
32    pub fn empty() -> Self {
33        Self { changes: ChangeSet::empty() }
34    }
35
36    /// The changes as a plain change set.
37    pub fn change_set(&self) -> &ChangeSet<ImmutableGroup<T, K, G>, G> {
38        &self.changes
39    }
40}
41
42impl<T, K, G> From<ChangeSet<ImmutableGroup<T, K, G>, G>> for ImmutableGroupChangeSet<T, K, G> {
43    fn from(changes: ChangeSet<ImmutableGroup<T, K, G>, G>) -> Self {
44        Self { changes }
45    }
46}
47
48impl<T, K, G> From<Vec<Change<ImmutableGroup<T, K, G>, G>>> for ImmutableGroupChangeSet<T, K, G> {
49    /// `new ImmutableGroupChangeSet(IEnumerable<Change>)`.
50    fn from(changes: Vec<Change<ImmutableGroup<T, K, G>, G>>) -> Self {
51        Self { changes: ChangeSet::from(changes) }
52    }
53}
54
55impl<T, K, G> Deref for ImmutableGroupChangeSet<T, K, G> {
56    type Target = ChangeSet<ImmutableGroup<T, K, G>, G>;
57
58    fn deref(&self) -> &Self::Target {
59        &self.changes
60    }
61}
62
63impl<'a, T, K, G> IntoIterator for &'a ImmutableGroupChangeSet<T, K, G> {
64    type Item = &'a Change<ImmutableGroup<T, K, G>, G>;
65    type IntoIter = std::slice::Iter<'a, Change<ImmutableGroup<T, K, G>, G>>;
66
67    fn into_iter(self) -> Self::IntoIter {
68        self.changes.changes().iter()
69    }
70}
71
72impl<T: 'static, K: 'static, G: 'static> IChangeSet<ImmutableGroup<T, K, G>, G> for ImmutableGroupChangeSet<T, K, G> {
73    fn change_set(&self) -> &ChangeSet<ImmutableGroup<T, K, G>, G> {
74        &self.changes
75    }
76}
77
78impl<T, K, G: PartialEq> PartialEq for ImmutableGroupChangeSet<T, K, G> {
79    fn eq(&self, other: &Self) -> bool {
80        self.changes == other.changes
81    }
82}
83
84impl<T: Clone, K: Eq + std::hash::Hash + Clone, G: fmt::Debug> fmt::Debug for ImmutableGroupChangeSet<T, K, G> {
85    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
86        fmt::Debug::fmt(&self.changes, f)
87    }
88}
ferroui_dynamic_data/cache/immutable_group_change_set.rs

ferroui_dynamic_data/cache/
immutable_group_change_set.rs
