mirror of
https://github.com/DioxusLabs/dioxus
synced 2024-11-10 06:34:20 +00:00
and mut bound to mut methods on signals
This commit is contained in:
parent
f1596bf5e8
commit
8559984e9d
31 changed files with 129 additions and 153 deletions
|
@ -41,9 +41,9 @@ const RECT_STYLE: &str = r#"
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"#;
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fn app() -> Element {
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let events = use_signal(std::collections::VecDeque::new);
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let mut events = use_signal(std::collections::VecDeque::new);
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let log_event = move |event: Event| {
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let mut log_event = move |event: Event| {
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let mut events = events.write();
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if events.len() >= MAX_EVENTS {
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@ -19,9 +19,9 @@ fn main() {
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}
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fn app() -> Element {
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let val = use_signal(|| String::from("0"));
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let mut val = use_signal(|| String::from("0"));
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let input_digit = move |num: u8| {
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let mut input_digit = move |num: u8| {
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if val.cloned() == "0" {
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val.set(String::new());
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}
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@ -29,11 +29,11 @@ fn app() -> Element {
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val.write().push_str(num.to_string().as_str());
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};
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let input_operator = move |key: &str| val.write().push_str(key);
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let mut input_operator = move |key: &str| val.write().push_str(key);
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let handle_key_down_event = move |evt: KeyboardEvent| match evt.key() {
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let mut handle_key_down_event = move |evt: KeyboardEvent| match evt.key() {
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Key::Backspace => {
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if !val().is_empty() {
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if !val.cloned().is_empty() {
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val.write().pop();
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}
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}
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@ -72,16 +72,16 @@ fn app() -> Element {
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class: "calculator-key key-clear",
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onclick: move |_| {
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val.set(String::new());
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if !val().is_empty(){
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if !val.cloned().is_empty(){
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val.set("0".into());
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}
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},
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if val().is_empty() { "C" } else { "AC" }
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if val.cloned().is_empty() { "C" } else { "AC" }
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}
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button {
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class: "calculator-key key-sign",
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onclick: move |_| {
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let temp = calc_val(val().as_str());
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let temp = calc_val(val.cloned().as_str());
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if temp > 0.0 {
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val.set(format!("-{temp}"));
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} else {
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@ -120,7 +120,7 @@ fn app() -> Element {
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button { class: "calculator-key key-add", onclick: move |_| input_operator("+"), "+" }
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button {
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class: "calculator-key key-equals",
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onclick: move |_| val.set(format!("{}", calc_val(val().as_str()))),
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onclick: move |_| val.set(format!("{}", calc_val(val.cloned().as_str()))),
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"="
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}
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}
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@ -10,7 +10,7 @@ fn main() {
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}
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fn app() -> Element {
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let emails_sent = use_signal(|| Vec::new() as Vec<String>);
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let mut emails_sent = use_signal(|| Vec::new() as Vec<String>);
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// Wait for responses to the compose channel, and then push them to the emails_sent signal.
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let handle = use_coroutine(|mut rx: UnboundedReceiver<String>| async move {
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@ -42,7 +42,7 @@ fn app() -> Element {
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}
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fn compose(send: Rc<dyn Fn(String)>) -> Element {
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let user_input = use_signal(String::new);
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let mut user_input = use_signal(String::new);
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rsx! {
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div {
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@ -7,8 +7,8 @@ fn main() {
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}
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fn app() -> Element {
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let elements = use_signal(Vec::<Rc<MountedData>>::new);
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let running = use_signal(|| true);
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let mut elements = use_signal(Vec::<Rc<MountedData>>::new);
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let mut running = use_signal(|| true);
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use_future(move || async move {
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let mut focused = 0;
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@ -8,8 +8,8 @@ fn main() {
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}
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fn app() -> Element {
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let counters = use_signal(|| vec![0, 0, 0]);
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let sum = use_selector(move || counters.read().iter().copied().sum::<usize>());
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let mut counters = use_signal(|| vec![0, 0, 0]);
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let mut sum = use_selector(move || counters.read().iter().copied().sum::<usize>());
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render! {
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div {
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@ -58,7 +58,7 @@ pub struct Client {
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#[component]
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fn ClientList() -> Element {
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let clients = use_context::<Clients>();
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let mut clients = use_context::<Clients>();
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rsx! {
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h2 { "List of Clients" }
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@ -75,9 +75,9 @@ fn ClientList() -> Element {
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#[component]
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fn ClientAdd() -> Element {
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let first_name = use_signal(String::new);
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let last_name = use_signal(String::new);
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let description = use_signal(String::new);
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let mut first_name = use_signal(String::new);
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let mut last_name = use_signal(String::new);
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let mut description = use_signal(String::new);
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let submit_client = move |_: FormEvent| {
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consume_context::<Clients>().write().push(Client {
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@ -5,7 +5,7 @@ fn main() {
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}
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fn app() -> Element {
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let disabled = use_signal(|| false);
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let mut disabled = use_signal(|| false);
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rsx! {
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div {
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@ -6,8 +6,8 @@ fn main() {
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}
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fn app() -> Element {
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let breed = use_signal(|| "deerhound".to_string());
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let breed_list = use_future(|| async move {
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let mut breed = use_signal(|| "deerhound".to_string());
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let mut breed_list = use_future(|| async move {
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let list = reqwest::get("https://dog.ceo/api/breeds/list/all")
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.await
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.unwrap()
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@ -20,7 +20,7 @@ fn main() {
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const _STYLE: &str = manganis::mg!(file("./examples/assets/fileexplorer.css"));
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fn app() -> Element {
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let files = use_signal(Files::new);
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let mut files = use_signal(Files::new);
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rsx! {
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div {
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@ -8,8 +8,8 @@ fn main() {
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}
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fn App() -> Element {
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let enable_directory_upload = use_signal(|| false);
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let files_uploaded = use_signal(|| Vec::new() as Vec<String>);
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let mut enable_directory_upload = use_signal(|| false);
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let mut files_uploaded = use_signal(|| Vec::new() as Vec<String>);
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let upload_files = move |evt: FormEvent| async move {
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for file_name in evt.files().unwrap().files() {
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@ -38,7 +38,7 @@ fn main() {
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const STYLE: &str = include_str!("./assets/calculator.css");
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fn app() -> Element {
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let state = use_signal(Calculator::new);
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let mut state = use_signal(Calculator::new);
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rsx! {
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style { {STYLE} }
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@ -12,7 +12,7 @@ fn main() {
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}
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fn app() -> Element {
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let state = use_signal(|| PlayerState { is_playing: false });
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let mut state = use_signal(|| PlayerState { is_playing: false });
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rsx!(
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div {
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@ -26,10 +26,10 @@ fn main() {
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}
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fn app() -> Element {
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let div_element = use_signal(|| None as Option<Rc<MountedData>>);
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let dimensions = use_signal(Rect::zero);
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let mut div_element = use_signal(|| None as Option<Rc<MountedData>>);
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let mut dimensions = use_signal(Rect::zero);
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let read_dims = move |_| async move {
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let mut read_dims = move |_| async move {
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let read = div_element.read();
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let client_rect = read.as_ref().map(|el| el.get_client_rect());
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if let Some(client_rect) = client_rect {
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@ -5,7 +5,7 @@ fn main() {
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}
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fn app() -> Element {
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let header_element = use_signal(|| None);
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let mut header_element = use_signal(|| None);
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rsx! {
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div {
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@ -6,7 +6,7 @@ fn main() {
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}
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fn app() -> Element {
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let toggled = use_signal(|| false);
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let mut toggled = use_signal(|| false);
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_ = use_global_shortcut("ctrl+s", move || toggled.toggle());
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@ -6,9 +6,9 @@ fn main() {
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}
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fn app() -> Element {
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let running = dioxus_signals::use_signal(|| true);
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let mut count = dioxus_signals::use_signal(|| 0);
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let saved_values = dioxus_signals::use_signal(|| vec![0.to_string()]);
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let mut running = use_signal(|| true);
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let mut count = use_signal(|| 0);
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let mut saved_values = use_signal(|| vec![0.to_string()]);
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// Signals can be used in async functions without an explicit clone since they're 'static and Copy
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// Signals are backed by a runtime that is designed to deeply integrate with Dioxus apps
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@ -8,7 +8,7 @@ fn main() {
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}
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fn app() -> Element {
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let count = use_signal(|| 10);
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let mut count = use_signal(|| 10);
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use_future(|| async move {
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let mut stream = some_stream();
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@ -30,7 +30,7 @@ fn Dice() -> Element {
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[Y, Y, Y, Y, Y, Y, N],
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];
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let value = use_signal(|| 5);
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let mut value = use_signal(|| 5);
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let active_dots = use_selector(move || &DOTS_FOR_VALUE[(value() - 1) as usize]);
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rsx! {
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@ -7,9 +7,7 @@ fn main() {
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}
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fn app() -> Element {
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let model = use_signal(|| String::from("asd"));
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println!("{model}");
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let mut model = use_signal(|| String::from("asd"));
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rsx! {
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textarea {
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@ -22,8 +22,8 @@ pub struct TodoItem {
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}
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pub fn app() -> Element {
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let todos = use_signal(|| HashMap::<u32, TodoItem>::new());
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let filter = use_signal(|| FilterState::All);
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let mut todos = use_signal(|| HashMap::<u32, TodoItem>::new());
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let mut filter = use_signal(|| FilterState::All);
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let active_todo_count =
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use_selector(move || todos.read().values().filter(|item| !item.checked).count());
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@ -56,17 +56,17 @@ pub fn app() -> Element {
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class: "toggle-all",
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r#type: "checkbox",
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onchange: move |_| {
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let check = *active_todo_count() != 0;
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let check = active_todo_count() != 0;
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for (_, item) in todos.write().iter_mut() {
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item.checked = check;
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}
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},
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checked: *active_todo_count() == 0,
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checked: active_todo_count() == 0,
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}
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label { r#for: "toggle-all" }
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}
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ul { class: "todo-list",
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for id in filtered_todos().iter().copied() {
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for id in filtered_todos.read().iter().copied() {
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TodoEntry { key: "{id}", id, todos }
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}
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}
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@ -81,7 +81,8 @@ pub fn app() -> Element {
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#[component]
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pub fn TodoHeader(todos: Signal<HashMap<u32, TodoItem>>) -> Element {
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let draft = use_signal(|| "".to_string());
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let mut todos = todos;
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let mut draft = use_signal(|| "".to_string());
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let mut todo_id = use_signal(|| 0);
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let onkeydown = move |evt: KeyboardEvent| {
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@ -115,7 +116,8 @@ pub fn TodoHeader(todos: Signal<HashMap<u32, TodoItem>>) -> Element {
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#[component]
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pub fn TodoEntry(todos: Signal<HashMap<u32, TodoItem>>, id: u32) -> Element {
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let is_editing = use_signal(|| false);
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let mut todos = todos;
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let mut is_editing = use_signal(|| false);
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let checked = use_selector(move || todos.read().get(&id).unwrap().checked);
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let contents = use_selector(move || todos.read().get(&id).unwrap().contents.clone());
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@ -166,6 +168,8 @@ pub fn ListFooter(
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active_todo_count: ReadOnlySignal<usize>,
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filter: Signal<FilterState>,
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) -> Element {
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let mut todos = todos;
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let mut filter = filter;
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let show_clear_completed = use_selector(move || todos.read().values().any(|todo| todo.checked));
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rsx! {
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@ -173,7 +177,7 @@ pub fn ListFooter(
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span { class: "todo-count",
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strong { "{active_todo_count} " }
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span {
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match *active_todo_count() {
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match active_todo_count() {
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1 => "item",
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_ => "items",
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}
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@ -197,7 +201,7 @@ pub fn ListFooter(
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}
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}
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}
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if *show_clear_completed() {
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if show_clear_completed() {
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button {
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class: "clear-completed",
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onclick: move |_| todos.write().retain(|_, todo| !todo.checked),
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@ -12,9 +12,9 @@ fn main() {
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}
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fn app() -> Element {
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let fullscreen = use_signal(|| false);
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let always_on_top = use_signal(|| false);
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let decorations = use_signal(|| false);
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let mut fullscreen = use_signal(|| false);
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let mut always_on_top = use_signal(|| false);
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let mut decorations = use_signal(|| false);
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rsx!(
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link { href:"https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css", rel:"stylesheet" }
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@ -11,7 +11,7 @@ fn main() {
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}
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fn app() -> Element {
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let focused = use_signal(|| false);
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let mut focused = use_signal(|| false);
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use_wry_event_handler(move |event, _| match event {
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WryEvent::WindowEvent {
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|
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|
@ -5,7 +5,7 @@ fn main() {
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}
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fn app() -> Element {
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let level = use_signal(|| 1.0);
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let mut level = use_signal(|| 1.0);
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rsx! {
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input {
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|
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@ -9,7 +9,7 @@ fn main() {
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}
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fn app() -> Element {
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let contents = use_signal(|| String::from("<script>alert(\"hello world\")</script>"));
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let mut contents = use_signal(|| String::from("<script>alert(\"hello world\")</script>"));
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rsx! {
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div {
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|
|
|
@ -477,13 +477,13 @@ impl Display for AlreadyBorrowedError {
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impl std::error::Error for AlreadyBorrowedError {}
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/// A reference to a value in a generational box.
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pub struct GenerationalRef<T: 'static> {
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inner: Ref<'static, T>,
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pub struct GenerationalRef<'a, T: 'static> {
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inner: Ref<'a, T>,
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#[cfg(any(debug_assertions, feature = "debug_borrows"))]
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borrow: GenerationalRefBorrowInfo,
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}
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impl<T: 'static> GenerationalRef<T> {
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impl<'a, T: 'static> GenerationalRef<'a, T> {
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/// Map one ref type to another.
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pub fn map<U, F>(orig: GenerationalRef<T>, f: F) -> GenerationalRef<U>
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where
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|
@ -500,7 +500,7 @@ impl<T: 'static> GenerationalRef<T> {
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}
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/// Filter one ref type to another.
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pub fn filter_map<U, F>(orig: GenerationalRef<T>, f: F) -> Option<GenerationalRef<U>>
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pub fn filter_map<U, F>(orig: GenerationalRef<'a, T>, f: F) -> Option<GenerationalRef<'a, U>>
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where
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F: FnOnce(&T) -> Option<&U>,
|
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{
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|
@ -520,7 +520,7 @@ impl<T: 'static> GenerationalRef<T> {
|
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}
|
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}
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impl<T: 'static> Deref for GenerationalRef<T> {
|
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impl<T: 'static> Deref for GenerationalRef<'_, T> {
|
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type Target = T;
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|
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fn deref(&self) -> &Self::Target {
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|
@ -545,13 +545,13 @@ impl Drop for GenerationalRefBorrowInfo {
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}
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|
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/// A mutable reference to a value in a generational box.
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pub struct GenerationalRefMut<T: 'static> {
|
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inner: RefMut<'static, T>,
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pub struct GenerationalRefMut<'a, T: 'static> {
|
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inner: RefMut<'a, T>,
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#[cfg(any(debug_assertions, feature = "debug_borrows"))]
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borrow: GenerationalRefMutBorrowInfo,
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}
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|
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impl<T: 'static> GenerationalRefMut<T> {
|
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impl<'a, T: 'static> GenerationalRefMut<'a, T> {
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/// Map one ref type to another.
|
||||
pub fn map<U, F>(orig: GenerationalRefMut<T>, f: F) -> GenerationalRefMut<U>
|
||||
where
|
||||
|
@ -565,7 +565,10 @@ impl<T: 'static> GenerationalRefMut<T> {
|
|||
}
|
||||
|
||||
/// Filter one ref type to another.
|
||||
pub fn filter_map<U, F>(orig: GenerationalRefMut<T>, f: F) -> Option<GenerationalRefMut<U>>
|
||||
pub fn filter_map<U, F>(
|
||||
orig: GenerationalRefMut<'a, T>,
|
||||
f: F,
|
||||
) -> Option<GenerationalRefMut<'a, U>>
|
||||
where
|
||||
F: FnOnce(&mut T) -> Option<&mut U>,
|
||||
{
|
||||
|
@ -584,7 +587,7 @@ impl<T: 'static> GenerationalRefMut<T> {
|
|||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> Deref for GenerationalRefMut<T> {
|
||||
impl<'a, T: 'static> Deref for GenerationalRefMut<'a, T> {
|
||||
type Target = T;
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
|
@ -592,7 +595,7 @@ impl<T: 'static> Deref for GenerationalRefMut<T> {
|
|||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> DerefMut for GenerationalRefMut<T> {
|
||||
impl<'a, T: 'static> DerefMut for GenerationalRefMut<'a, T> {
|
||||
fn deref_mut(&mut self) -> &mut Self::Target {
|
||||
self.inner.deref_mut()
|
||||
}
|
||||
|
|
|
@ -125,7 +125,7 @@ impl<T> Coroutine<T> {
|
|||
/// Restart this coroutine
|
||||
///
|
||||
/// Forces the component to re-render, which will re-invoke the coroutine.
|
||||
pub fn restart(&self) {
|
||||
pub fn restart(&mut self) {
|
||||
self.needs_regen.set(true);
|
||||
self.task().stop();
|
||||
}
|
||||
|
|
|
@ -25,8 +25,8 @@ where
|
|||
T: 'static,
|
||||
F: Future<Output = T> + 'static,
|
||||
{
|
||||
let value = use_signal(|| None);
|
||||
let state = use_signal(|| UseFutureState::Pending);
|
||||
let mut value = use_signal(|| None);
|
||||
let mut state = use_signal(|| UseFutureState::Pending);
|
||||
|
||||
let task = use_signal(|| {
|
||||
// Create the user's task
|
||||
|
@ -84,7 +84,7 @@ impl<T> UseFuture<T> {
|
|||
}
|
||||
|
||||
// Manually set the value in the future slot without starting the future over
|
||||
pub fn set(&self, new_value: T) {
|
||||
pub fn set(&mut self, new_value: T) {
|
||||
self.value.set(Some(new_value));
|
||||
}
|
||||
|
||||
|
|
|
@ -120,78 +120,81 @@ macro_rules! write_impls {
|
|||
|
||||
impl<T: 'static> $ty<Vec<T>> {
|
||||
/// Pushes a new value to the end of the vector.
|
||||
pub fn push(&self, value: T) {
|
||||
pub fn push(&mut self, value: T) {
|
||||
self.with_mut(|v| v.push(value))
|
||||
}
|
||||
|
||||
/// Pops the last value from the vector.
|
||||
pub fn pop(&self) -> Option<T> {
|
||||
pub fn pop(&mut self) -> Option<T> {
|
||||
self.with_mut(|v| v.pop())
|
||||
}
|
||||
|
||||
/// Inserts a new value at the given index.
|
||||
pub fn insert(&self, index: usize, value: T) {
|
||||
pub fn insert(&mut self, index: usize, value: T) {
|
||||
self.with_mut(|v| v.insert(index, value))
|
||||
}
|
||||
|
||||
/// Removes the value at the given index.
|
||||
pub fn remove(&self, index: usize) -> T {
|
||||
pub fn remove(&mut self, index: usize) -> T {
|
||||
self.with_mut(|v| v.remove(index))
|
||||
}
|
||||
|
||||
/// Clears the vector, removing all values.
|
||||
pub fn clear(&self) {
|
||||
pub fn clear(&mut self) {
|
||||
self.with_mut(|v| v.clear())
|
||||
}
|
||||
|
||||
/// Extends the vector with the given iterator.
|
||||
pub fn extend(&self, iter: impl IntoIterator<Item = T>) {
|
||||
pub fn extend(&mut self, iter: impl IntoIterator<Item = T>) {
|
||||
self.with_mut(|v| v.extend(iter))
|
||||
}
|
||||
|
||||
/// Truncates the vector to the given length.
|
||||
pub fn truncate(&self, len: usize) {
|
||||
pub fn truncate(&mut self, len: usize) {
|
||||
self.with_mut(|v| v.truncate(len))
|
||||
}
|
||||
|
||||
/// Swaps two values in the vector.
|
||||
pub fn swap_remove(&self, index: usize) -> T {
|
||||
pub fn swap_remove(&mut self, index: usize) -> T {
|
||||
self.with_mut(|v| v.swap_remove(index))
|
||||
}
|
||||
|
||||
/// Retains only the values that match the given predicate.
|
||||
pub fn retain(&self, f: impl FnMut(&T) -> bool) {
|
||||
pub fn retain(&mut self, f: impl FnMut(&T) -> bool) {
|
||||
self.with_mut(|v| v.retain(f))
|
||||
}
|
||||
|
||||
/// Splits the vector into two at the given index.
|
||||
pub fn split_off(&self, at: usize) -> Vec<T> {
|
||||
pub fn split_off(&mut self, at: usize) -> Vec<T> {
|
||||
self.with_mut(|v| v.split_off(at))
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> $ty<Option<T>> {
|
||||
/// Takes the value out of the Option.
|
||||
pub fn take(&self) -> Option<T> {
|
||||
pub fn take(&mut self) -> Option<T> {
|
||||
self.with_mut(|v| v.take())
|
||||
}
|
||||
|
||||
/// Replace the value in the Option.
|
||||
pub fn replace(&self, value: T) -> Option<T> {
|
||||
pub fn replace(&mut self, value: T) -> Option<T> {
|
||||
self.with_mut(|v| v.replace(value))
|
||||
}
|
||||
|
||||
/// Gets the value out of the Option, or inserts the given value if the Option is empty.
|
||||
pub fn get_or_insert(&self, default: T) -> GenerationalRef<T> {
|
||||
pub fn get_or_insert(&mut self, default: T) -> GenerationalRef<T> {
|
||||
self.get_or_insert_with(|| default)
|
||||
}
|
||||
|
||||
/// Gets the value out of the Option, or inserts the value returned by the given function if the Option is empty.
|
||||
pub fn get_or_insert_with(&self, default: impl FnOnce() -> T) -> GenerationalRef<T> {
|
||||
pub fn get_or_insert_with(
|
||||
&mut self,
|
||||
default: impl FnOnce() -> T,
|
||||
) -> GenerationalRef<T> {
|
||||
let borrow = self.read();
|
||||
if borrow.is_none() {
|
||||
drop(borrow);
|
||||
self.with_mut(|v| *v = Some(default()));
|
||||
self.write_unchecked().replace(default());
|
||||
GenerationalRef::map(self.read(), |v| v.as_ref().unwrap())
|
||||
} else {
|
||||
GenerationalRef::map(borrow, |v| v.as_ref().unwrap())
|
||||
|
@ -281,14 +284,14 @@ impl<T: Clone + 'static> IntoIterator for Signal<Vec<T>> {
|
|||
|
||||
impl<T: 'static> Signal<Vec<T>> {
|
||||
/// Returns a reference to an element or `None` if out of bounds.
|
||||
pub fn get_mut(&self, index: usize) -> Option<Write<T, Vec<T>>> {
|
||||
pub fn get_mut(&mut self, index: usize) -> Option<Write<T, Vec<T>>> {
|
||||
Write::filter_map(self.write(), |v| v.get_mut(index))
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: 'static> Signal<Option<T>> {
|
||||
/// Returns a reference to an element or `None` if out of bounds.
|
||||
pub fn as_mut(&self) -> Option<Write<T, Option<T>>> {
|
||||
pub fn as_mut(&mut self) -> Option<Write<T, Option<T>>> {
|
||||
Write::filter_map(self.write(), |v| v.as_mut())
|
||||
}
|
||||
}
|
||||
|
|
|
@ -151,6 +151,10 @@ impl<T: 'static> CopyValue<T> {
|
|||
self.value.try_write()
|
||||
}
|
||||
|
||||
pub fn write_unchecked(&self) -> GenerationalRefMut<T> {
|
||||
self.value.write()
|
||||
}
|
||||
|
||||
/// Write the value. If the value has been dropped, this will panic.
|
||||
#[track_caller]
|
||||
pub fn write(&self) -> GenerationalRefMut<T> {
|
||||
|
@ -188,8 +192,8 @@ impl<T: 'static> PartialEq for CopyValue<T> {
|
|||
}
|
||||
}
|
||||
|
||||
impl<T> Deref for CopyValue<T> {
|
||||
type Target = dyn Fn() -> GenerationalRef<T>;
|
||||
impl<T: 'static + Clone> Deref for CopyValue<T> {
|
||||
type Target = dyn Fn() -> T;
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
// https://github.com/dtolnay/case-studies/tree/master/callable-types
|
||||
|
@ -197,7 +201,7 @@ impl<T> Deref for CopyValue<T> {
|
|||
// First we create a closure that captures something with the Same in memory layout as Self (MaybeUninit<Self>).
|
||||
let uninit_callable = MaybeUninit::<Self>::uninit();
|
||||
// Then move that value into the closure. We assume that the closure now has a in memory layout of Self.
|
||||
let uninit_closure = move || Self::read(unsafe { &*uninit_callable.as_ptr() });
|
||||
let uninit_closure = move || Self::read(unsafe { &*uninit_callable.as_ptr() }).clone();
|
||||
|
||||
// Check that the size of the closure is the same as the size of Self in case the compiler changed the layout of the closure.
|
||||
let size_of_closure = std::mem::size_of_val(&uninit_closure);
|
||||
|
|
|
@ -26,49 +26,11 @@ pub fn use_selector<R: PartialEq>(f: impl FnMut() -> R + 'static) -> ReadOnlySig
|
|||
use_hook(|| selector(f))
|
||||
}
|
||||
|
||||
/// Creates a new Selector with some local dependencies. The selector will be run immediately and whenever any signal it reads or any dependencies it tracks changes
|
||||
///
|
||||
/// Selectors can be used to efficiently compute derived data from signals.
|
||||
///
|
||||
/// ```rust
|
||||
/// use dioxus::prelude::*;
|
||||
/// use dioxus_signals::*;
|
||||
///
|
||||
/// fn App() -> Element {
|
||||
/// let mut local_state = use_signal(|| 0);
|
||||
/// let double = use_selector_with_dependencies((local_state.get(),), move |(local_state,)| local_state * 2);
|
||||
/// local_state.set(1);
|
||||
///
|
||||
/// render! { "{double}" }
|
||||
/// }
|
||||
/// ```
|
||||
#[must_use = "Consider using `use_effect` to rerun a callback when dependencies change"]
|
||||
pub fn use_selector_with_dependencies<R: PartialEq, D: Dependency>(
|
||||
dependencies: D,
|
||||
mut f: impl FnMut(D::Out) -> R + 'static,
|
||||
) -> ReadOnlySignal<R>
|
||||
where
|
||||
D::Out: 'static,
|
||||
{
|
||||
let dependencies_signal = use_signal(|| dependencies.out());
|
||||
let selector = use_hook(|| {
|
||||
selector(move || {
|
||||
let deref = &*dependencies_signal.read();
|
||||
f(deref.clone())
|
||||
})
|
||||
});
|
||||
let changed = { dependencies.changed(&*dependencies_signal.read()) };
|
||||
if changed {
|
||||
dependencies_signal.set(dependencies.out());
|
||||
}
|
||||
selector
|
||||
}
|
||||
|
||||
/// Creates a new Selector. The selector will be run immediately and whenever any signal it reads changes.
|
||||
///
|
||||
/// Selectors can be used to efficiently compute derived data from signals.
|
||||
pub fn selector<R: PartialEq>(mut f: impl FnMut() -> R + 'static) -> ReadOnlySignal<R> {
|
||||
let state = Signal::<R> {
|
||||
let mut state = Signal::<R> {
|
||||
inner: CopyValue::invalid(),
|
||||
};
|
||||
let effect = Effect {
|
||||
|
|
|
@ -210,7 +210,7 @@ impl<T: 'static> Signal<T> {
|
|||
///
|
||||
/// If the signal has been dropped, this will panic.
|
||||
#[track_caller]
|
||||
pub fn read(&self) -> GenerationalRef<T> {
|
||||
pub fn read<'a>(&'a self) -> GenerationalRef<'a, T> {
|
||||
let inner = self.inner.read();
|
||||
if let Some(effect) = inner.effect_stack.current() {
|
||||
let mut effect_subscribers = inner.effect_subscribers.borrow_mut();
|
||||
|
@ -245,11 +245,8 @@ impl<T: 'static> Signal<T> {
|
|||
GenerationalRef::map(inner, |v| &v.value)
|
||||
}
|
||||
|
||||
/// Get a mutable reference to the signal's value.
|
||||
///
|
||||
/// If the signal has been dropped, this will panic.
|
||||
#[track_caller]
|
||||
pub fn write(&self) -> Write<T> {
|
||||
/// Write to the value through an immutable reference.
|
||||
pub fn write_unchecked(&self) -> Write<T> {
|
||||
let inner = self.inner.write();
|
||||
let borrow = GenerationalRefMut::map(inner, |v| &mut v.value);
|
||||
Write {
|
||||
|
@ -258,6 +255,14 @@ impl<T: 'static> Signal<T> {
|
|||
}
|
||||
}
|
||||
|
||||
/// Get a mutable reference to the signal's value.
|
||||
///
|
||||
/// If the signal has been dropped, this will panic.
|
||||
#[track_caller]
|
||||
pub fn write<'a>(&'a mut self) -> Write<'a, T> {
|
||||
self.write_unchecked()
|
||||
}
|
||||
|
||||
fn update_subscribers(&self) {
|
||||
{
|
||||
let inner = self.inner.read();
|
||||
|
@ -288,7 +293,7 @@ impl<T: 'static> Signal<T> {
|
|||
|
||||
/// Set the value of the signal. This will trigger an update on all subscribers.
|
||||
#[track_caller]
|
||||
pub fn set(&self, value: T) {
|
||||
pub fn set(&mut self, value: T) {
|
||||
*self.write() = value;
|
||||
}
|
||||
|
||||
|
@ -311,7 +316,7 @@ impl<T: 'static> Signal<T> {
|
|||
/// Run a closure with a mutable reference to the signal's value.
|
||||
/// If the signal has been dropped, this will panic.
|
||||
#[track_caller]
|
||||
pub fn with_mut<O>(&self, f: impl FnOnce(&mut T) -> O) -> O {
|
||||
pub fn with_mut<O>(&mut self, f: impl FnOnce(&mut T) -> O) -> O {
|
||||
let mut write = self.write();
|
||||
f(&mut *write)
|
||||
}
|
||||
|
@ -337,7 +342,7 @@ impl<T: Clone + 'static> Signal<T> {
|
|||
|
||||
impl Signal<bool> {
|
||||
/// Invert the boolean value of the signal. This will trigger an update on all subscribers.
|
||||
pub fn toggle(&self) {
|
||||
pub fn toggle(&mut self) {
|
||||
self.set(!self.cloned());
|
||||
}
|
||||
}
|
||||
|
@ -351,7 +356,7 @@ impl<T: 'static> PartialEq for Signal<T> {
|
|||
/// Allow calling a signal with signal() syntax
|
||||
///
|
||||
/// Currently only limited to copy types, though could probably specialize for string/arc/rc
|
||||
impl<T: Copy + Clone> Deref for Signal<T> {
|
||||
impl<T: Copy> Deref for Signal<T> {
|
||||
type Target = dyn Fn() -> T;
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
|
@ -360,10 +365,7 @@ impl<T: Copy + Clone> Deref for Signal<T> {
|
|||
// First we create a closure that captures something with the Same in memory layout as Self (MaybeUninit<Self>).
|
||||
let uninit_callable = MaybeUninit::<Self>::uninit();
|
||||
// Then move that value into the closure. We assume that the closure now has a in memory layout of Self.
|
||||
let uninit_closure = move || {
|
||||
let res = Self::read(unsafe { &*uninit_callable.as_ptr() });
|
||||
res.clone()
|
||||
};
|
||||
let uninit_closure = move || Self::read(unsafe { &*uninit_callable.as_ptr() }).clone();
|
||||
|
||||
// Check that the size of the closure is the same as the size of Self in case the compiler changed the layout of the closure.
|
||||
let size_of_closure = std::mem::size_of_val(&uninit_closure);
|
||||
|
@ -398,14 +400,14 @@ impl<T: 'static> Drop for SignalSubscriberDrop<T> {
|
|||
}
|
||||
|
||||
/// A mutable reference to a signal's value.
|
||||
pub struct Write<T: 'static, I: 'static = T> {
|
||||
write: GenerationalRefMut<T>,
|
||||
pub struct Write<'a, T: 'static, I: 'static = T> {
|
||||
write: GenerationalRefMut<'a, T>,
|
||||
signal: SignalSubscriberDrop<I>,
|
||||
}
|
||||
|
||||
impl<T: 'static, I: 'static> Write<T, I> {
|
||||
impl<'a, T: 'static, I: 'static> Write<'a, T, I> {
|
||||
/// Map the mutable reference to the signal's value to a new type.
|
||||
pub fn map<O>(myself: Self, f: impl FnOnce(&mut T) -> &mut O) -> Write<O, I> {
|
||||
pub fn map<O>(myself: Self, f: impl FnOnce(&mut T) -> &mut O) -> Write<'a, O, I> {
|
||||
let Self { write, signal } = myself;
|
||||
Write {
|
||||
write: GenerationalRefMut::map(write, f),
|
||||
|
@ -417,14 +419,14 @@ impl<T: 'static, I: 'static> Write<T, I> {
|
|||
pub fn filter_map<O>(
|
||||
myself: Self,
|
||||
f: impl FnOnce(&mut T) -> Option<&mut O>,
|
||||
) -> Option<Write<O, I>> {
|
||||
) -> Option<Write<'a, O, I>> {
|
||||
let Self { write, signal } = myself;
|
||||
let write = GenerationalRefMut::filter_map(write, f);
|
||||
write.map(|write| Write { write, signal })
|
||||
}
|
||||
}
|
||||
|
||||
impl<T: 'static, I: 'static> Deref for Write<T, I> {
|
||||
impl<'a, T: 'static, I: 'static> Deref for Write<'a, T, I> {
|
||||
type Target = T;
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
|
@ -432,7 +434,7 @@ impl<T: 'static, I: 'static> Deref for Write<T, I> {
|
|||
}
|
||||
}
|
||||
|
||||
impl<T, I> DerefMut for Write<T, I> {
|
||||
impl<'a, T, I> DerefMut for Write<'a, T, I> {
|
||||
fn deref_mut(&mut self) -> &mut Self::Target {
|
||||
&mut self.write
|
||||
}
|
||||
|
@ -489,7 +491,7 @@ impl<T: 'static> PartialEq for ReadOnlySignal<T> {
|
|||
}
|
||||
}
|
||||
|
||||
impl<T: Copy + Clone> Deref for ReadOnlySignal<T> {
|
||||
impl<T: Copy> Deref for ReadOnlySignal<T> {
|
||||
type Target = dyn Fn() -> T;
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
|
|
Loading…
Reference in a new issue