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update: modify usestate to be borrowed

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Jonathan Kelley committed 2022-01-16 15:56:48 -05:00
1 parent 8e842231e4
commit 58839f47ba
10 files changed
+237 -419
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examples/todomvc.rs
+16 -18
View File
@@ -19,15 +19,15 @@ pub struct TodoItem {
}
pub fn app(cx: Scope<()>) -> Element {
let todos = use_state(&cx, || im_rc::HashMap::<u32, TodoItem>::default());
let todos = use_state(&cx, im_rc::HashMap::<u32, TodoItem>::default);
let filter = use_state(&cx, || FilterState::All);
let draft = use_state(&cx, || "".to_string());
let mut todo_id = use_state(&cx, || 0);
let (todo_id, set_todo_id) = use_state(&cx, || 0).split();
// Filter the todos based on the filter state
let mut filtered_todos = todos
.iter()
.filter(|(_, item)| match *filter {
.filter(|(_, item)| match **filter {
FilterState::All => true,
FilterState::Active => !item.checked,
FilterState::Completed => item.checked,
@@ -56,19 +56,17 @@ pub fn app(cx: Scope<()>) -> Element {
autofocus: "true",
oninput: move |evt| draft.set(evt.value.clone()),
onkeydown: move |evt| {
if evt.key == "Enter" {
if !draft.is_empty() {
todos.modify().insert(
*todo_id,
TodoItem {
id: *todo_id,
checked: false,
contents: draft.get().clone(),
},
);
todo_id += 1;
draft.set("".to_string());
}
if evt.key == "Enter" && !draft.is_empty() {
todos.modify().insert(
*todo_id,
TodoItem {
id: *todo_id,
checked: false,
contents: draft.get().clone(),
},
);
set_todo_id(todo_id + 1);
draft.set("".to_string());
}
}
}
@@ -90,7 +88,7 @@ pub fn app(cx: Scope<()>) -> Element {
(show_clear_completed).then(|| rsx!(
button {
class: "clear-completed",
onclick: move |_| todos.modify().retain(|_, todo| todo.checked == false),
onclick: move |_| todos.modify().retain(|_, todo| !todo.checked),
"Clear completed"
}
))
@@ -108,7 +106,7 @@ pub fn app(cx: Scope<()>) -> Element {
#[derive(Props)]
pub struct TodoEntryProps<'a> {
todos: UseState<'a, im_rc::HashMap<u32, TodoItem>>,
todos: &'a UseState<im_rc::HashMap<u32, TodoItem>>,
id: u32,
}