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use super::{App, CmdHandle, RenderInfo, StreamHandle, SubHandle, UndefinedGMsg}; use crate::virtual_dom::IntoNodes; use futures::stream::Stream; use std::{any::Any, future::Future, rc::Rc}; // @TODO: Add links to doc comment once https://github.com/rust-lang/rust/issues/43466 is resolved // or use nightly rustdoc. Applicable to the entire code base. pub mod container; pub mod proxy; pub use container::OrdersContainer; pub use proxy::OrdersProxy; pub trait Orders<Ms: 'static, GMs = UndefinedGMsg> { type AppMs: 'static; type Mdl: 'static; type INodes: IntoNodes<Self::AppMs> + 'static; /// Automatically map message type. It allows you to pass `Orders` into child module. /// /// # Example /// /// ```rust,no_run ///Msg::Child(child_msg) => { /// child::update(child_msg, &mut model.child, &mut orders.proxy(Msg::Child)); ///} /// ``` fn proxy<ChildMs: 'static>( &mut self, f: impl FnOnce(ChildMs) -> Ms + 'static + Clone, ) -> OrdersProxy<ChildMs, Self::AppMs, Self::Mdl, Self::INodes, GMs>; /// Schedule web page rerender after model update. It's the default behaviour. fn render(&mut self) -> &mut Self; /// Force web page to rerender immediately after model update. fn force_render_now(&mut self) -> &mut Self; /// Don't rerender web page after model update. fn skip(&mut self) -> &mut Self; /// Notify all subscription handlers that listen for messages with the `message`'s type. /// /// _Note:_ Seed's native subscriptions / `messages` can be also sent - e.g. /// `orders.notify(subs::UrlRequested::new(url))`. /// The most is ignored by the Seed's runtime, but some of them are processed and /// trigger side-effects - e.g. simulate `<a>` link click by sending `subs::UrlRequested`. /// /// # Example /// /// ```rust,no_run ///orders.notify(counter::DoReset); ///orders.notify("Hello!"); /// ... ///orders.subscribe(Msg::Reset); // `Msg::Reset(counter::DoReset)` ///orders.subscribe(|greeting: &'static str| log!(greeting)); /// ``` /// /// _Note:_: All notifications are pushed to the queue - i.e. `update` function is NOT called immediately. fn notify(&mut self, message: impl Any + Clone) -> &mut Self; /// Invoke function `update` with the given `msg`. /// /// # Example /// /// ```rust,no_run ///orders.msg(Msg::Increment); /// ``` /// /// _Note:_: All `msg`s are pushed to the queue - i.e. `update` function is NOT called immediately. fn send_msg(&mut self, msg: Ms) -> &mut Self; /// Execute `cmd` and send its output (if it's `Msg`) to `update` function. /// /// Output has to be `Msg`, `Option<Msg>` or `()`. /// /// # Example /// /// ```rust,no_run ///orders.perform_cmd(cmds::timeout(2000, || Msg::OnTimeout)); ///orders.perform_cmd(async { log!("Hello!") }); /// ``` /// /// _Note:_: Use the alternative `perform_cmd_with_handle` to control `cmd`'s lifetime. /// /// # Panics /// /// Panics when the output isn't `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn perform_cmd<MsU: 'static>(&mut self, cmd: impl Future<Output = MsU> + 'static) -> &mut Self; /// Execute given `cmd` and send its output (if it's `Msg`) to `update` function. /// - Returns `CmdHandle` that you should save to your `Model`. /// The `cmd` is aborted on the handle drop. /// /// Output has to be `Msg`, `Option<Msg>` or `()`. /// /// # Example /// /// ```rust,no_run ///let timeout_handle = orders.perform_cmd_with_handle(cmds::timeout(2000, || Msg::OnTimeout)); ///let cmd_handle = orders.perform_cmd_with_handle(async { log!("Hello!") }); /// ``` /// /// # Panics /// /// Panics when the output isn't `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[must_use = "cmd is aborted on its handle drop"] #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn perform_cmd_with_handle<MsU: 'static>( &mut self, cmd: impl Future<Output = MsU> + 'static, ) -> CmdHandle; /// Similar to `send_msg`, but calls function `sink` with the given global message. fn send_g_msg(&mut self, g_msg: GMs) -> &mut Self; /// Similar to `perform_cmd`, but result is send to function `sink`. fn perform_g_cmd(&mut self, g_cmd: impl Future<Output = GMs> + 'static) -> &mut Self; /// Similar to `perform_g_cmd`, but result is send to function `sink`. /// - Returns `CmdHandle` that you should save to your `Model`. /// `cmd` is aborted on the handle drop. /// #[must_use = "cmd is aborted on its handle drop"] fn perform_g_cmd_with_handle( &mut self, g_cmd: impl Future<Output = GMs> + 'static, ) -> CmdHandle; /// Get app instance. Cloning is cheap because `App` contains only `Rc` fields. fn clone_app(&self) -> App<Self::AppMs, Self::Mdl, Self::INodes, GMs>; /// Get the function that maps module's `Msg` to app's (root's) one. /// /// # Example /// /// ```rust,no_run ///let (app, msg_mapper) = (orders.clone_app(), orders.msg_mapper()); ///app.update(msg_mapper(Msg::AMessage)); /// ``` fn msg_mapper(&self) -> Box<dyn Fn(Ms) -> Self::AppMs>; /// Register the callback that will be executed after the next render. /// /// Callback's only parameter is `RenderInfo` - it has fields `timestamp` /// and `timestamp_delta`. /// `timestamp_delta` is the difference between the old render timestamp and the new one /// and it has value `None` if it's the first rendering. /// /// - It's useful when you want to use DOM API or make animations. /// - You can call this function multiple times - callbacks will be executed in the same order. /// - Callback has to return `Msg`, `Option<Msg>` or `()`. /// /// _Note:_ [performance.now()](https://developer.mozilla.org/en-US/docs/Web/API/Performance/now) /// is used under the hood to get timestamps. /// /// # Panics /// /// Panics when the handler doesn't return `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn after_next_render<MsU: 'static>( &mut self, callback: impl FnOnce(RenderInfo) -> MsU + 'static, ) -> &mut Self; /// Subscribe for messages with the `handler`s input type. /// /// Handler has to return `Msg`, `Option<Msg>` or `()`. /// /// # Example /// /// ```rust,no_run ///orders.subscribe(Msg::Reset); // `Msg::Reset(counter::DoReset)` ///orders.subscribe(|greeting: &'static str| log!(greeting)); ///orders.subscribe(Msg::UrlChanged) // `update(... Msg::UrlChanged(subs::UrlChanged(url)) =>` /// ... ///orders.notify(counter::DoReset); ///orders.notify("Hello!"); /// ``` /// /// _Note:_: Use the alternative `subscribe_with_handle` to control `sub`'s lifetime. /// /// # Panics /// /// Panics when the handler doesn't return `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn subscribe<MsU: 'static, SubMs: 'static + Clone>( &mut self, handler: impl FnOnce(SubMs) -> MsU + Clone + 'static, ) -> &mut Self; /// Subscribe for messages with the `handler`s input type. /// - Returns `SubHandle` that you should save to your `Model`. /// The `sub` is cancelled on the handle drop. /// /// Handler has to return `Msg`, `Option<Msg>` or `()`. /// /// # Example /// /// ```rust,no_run ///let sub_handle = orders.subscribe_with_handle(Msg::Reset); // `Msg::Reset(counter::DoReset)` ///orders.subscribe_with_handle(|greeting: &'static str| log!(greeting)); ///let url_changed_handle = orders.subscribe_with_handle(Msg::UrlChanged) // `update(... Msg::UrlChanged(subs::UrlChanged(url)) =>` /// ... ///orders.notify(counter::DoReset); ///orders.notify("Hello!"); /// ``` /// /// # Panics /// /// Panics when the handler doesn't return `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[must_use = "subscription is cancelled on its handle drop"] #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn subscribe_with_handle<MsU: 'static, SubMs: 'static + Clone>( &mut self, handler: impl FnOnce(SubMs) -> MsU + Clone + 'static, ) -> SubHandle; /// Stream `Msg`, `Option<Msg>` or `()`. /// /// # Example /// /// ```rust,no_run ///orders.stream(streams::interval(1000, || Msg::OnTick)); ///orders.stream(streams::window_event(Ev::Resize, |_| Msg::OnResize)); /// ``` /// /// _Note:_: Use the alternative `stream_with_handle` to control `stream`'s lifetime. /// /// # Panics /// /// Panics when the handler doesn't return `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn stream<MsU: 'static>(&mut self, stream: impl Stream<Item = MsU> + 'static) -> &mut Self; /// Stream `Msg`, `Option<Msg>` or `()`. /// - Returns `StreamHandle` that you should save to your `Model`. /// The `stream` is cancelled on the handle drop. /// /// # Example /// /// ```rust,no_run ///let timer_handler = orders.stream_with_handle(streams::interval(1000, || Msg::OnTick)); ///let stream_handler = orders.stream_with_handle(streams::window_event(Ev::Resize, |_| Msg::OnResize)); /// ``` /// /// # Panics /// /// Panics when the handler doesn't return `Msg`, `Option<Msg>` or `()`. /// (It will be changed to a compile-time error). #[must_use = "stream is stopped on its handle drop"] #[allow(clippy::shadow_unrelated)] // @TODO remove `'static`s once `optin_builtin_traits`, `negative_impls` // @TODO or https://github.com/rust-lang/rust/issues/41875 is stable fn stream_with_handle<MsU: 'static>( &mut self, stream: impl Stream<Item = MsU> + 'static, ) -> StreamHandle; /// Cheap clone base path loaded from element `<base href="base/path">`. /// /// Returns empty `Vec` if there is no `base` element in your HTML /// or there were problems with parsing. fn clone_base_path(&self) -> Rc<Vec<String>> { Rc::clone(&self.clone_app().cfg.base_path) } }