|
@@ -1,327 +1,4 @@
|
|
|
-//! <div align="center">
|
|
|
-//! <h1>🌗🚀 Dioxus</h1>
|
|
|
-//! <p>
|
|
|
-//! <strong>A concurrent, functional, virtual DOM for Rust</strong>
|
|
|
-//! </p>
|
|
|
-//! </div>
|
|
|
-//!
|
|
|
-//! # Resources
|
|
|
-//!
|
|
|
-//! This overview provides a brief introduction to Dioxus. For a more in-depth guide, make sure to check out:
|
|
|
-//! - [Getting Started](https://dioxuslabs.com/getting-started)
|
|
|
-//! - [Book](https://dioxuslabs.com/book)
|
|
|
-//! - [Reference](https://dioxuslabs.com/reference)
|
|
|
-//! - [Community Examples](https://github.com/DioxusLabs/community-examples)
|
|
|
-//!
|
|
|
-//! # Overview and Goals
|
|
|
-//!
|
|
|
-//! Dioxus makes it easy to quickly build complex user interfaces with Rust. Any Dioxus app can run in the web browser,
|
|
|
-//! as a desktop app, as a mobile app, or anywhere else provided you build the right renderer.
|
|
|
-//!
|
|
|
-//! Dioxus is heavily inspired by React, supporting many of the same concepts:
|
|
|
-//!
|
|
|
-//! - Hooks for state
|
|
|
-//! - VirtualDom & diffing
|
|
|
-//! - Concurrency, fibers, and asynchronous rendering
|
|
|
-//! - JSX-like templating syntax
|
|
|
-//!
|
|
|
-//! If you know React, then you know Dioxus.
|
|
|
-//!
|
|
|
-//! Dioxus is *substantially* more performant than many of the other Rust UI libraries (Yew/Percy) and is *significantly* more performant
|
|
|
-//! than React - roughly competitve with InfernoJS.
|
|
|
-//!
|
|
|
-//! Remember: Dioxus is a library for declaring interactive user interfaces - it is not a dedicated renderer. Most 1st party renderers for Dioxus currently only support web technologies.
|
|
|
-//!
|
|
|
-//! ## Brief Overview
|
|
|
-//!
|
|
|
-//! All Dioxus apps are built by composing functions that take in a `Scope` which is generic over some `Properties` and return an `Element`.
|
|
|
-//! A `Scope` holds relevant state data for the the currently-rendered component.
|
|
|
-//!
|
|
|
-//! To launch an app, we use the `launch` method for the specific renderer we want to use. In the launch function, we pass the app's `Component`.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! use dioxus::prelude::*;
|
|
|
-//!
|
|
|
-//! fn main() {
|
|
|
-//! dioxus::desktop::launch(app);
|
|
|
-//! }
|
|
|
-//!
|
|
|
-//! fn app(cx: Scope) -> Element {
|
|
|
-//! cx.render(rsx!("hello world!"))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! ## Elements & your first component
|
|
|
-//!
|
|
|
-//! To assemble UI trees with Dioxus, you need to use the `render` function on
|
|
|
-//! something called `LazyNodes`. To produce `LazyNodes`, you can use the `rsx!`
|
|
|
-//! macro or the NodeFactory API. For the most part, you want to use the `rsx!`
|
|
|
-//! macro.
|
|
|
-//!
|
|
|
-//! Any element in `rsx!` can have attributes, listeners, and children. For
|
|
|
-//! consistency, we force all attributes and listeners to be listed *before*
|
|
|
-//! children.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! let value = "123";
|
|
|
-//!
|
|
|
-//! rsx!(
|
|
|
-//! div {
|
|
|
-//! class: "my-class {value}", // <--- attribute
|
|
|
-//! onclick: move |_| log::info!("clicked!"), // <--- listener
|
|
|
-//! h1 { "hello world" }, // <--- child
|
|
|
-//! }
|
|
|
-//! )
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! The `rsx!` macro accepts attributes in "struct form" and will parse the rest
|
|
|
-//! of the body as child elements and rust expressions. Any rust expression that
|
|
|
-//! implements `IntoIterator<Item = impl IntoVNode>` will be parsed as a child.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! rsx!(
|
|
|
-//! div {
|
|
|
-//! (0..10).map(|_| rsx!(span { "hello world" }))
|
|
|
-//! }
|
|
|
-//! )
|
|
|
-//!
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Used within components, the `rsx!` macro must be rendered into an `Element` with
|
|
|
-//! the `render` function on Scope.
|
|
|
-//!
|
|
|
-//! If we want to omit the boilerplate of `cx.render`, we can simply pass in
|
|
|
-//! `cx` as the first argument of rsx. This is sometimes useful when we need to
|
|
|
-//! render nodes in match statements.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! fn example(cx: Scope) -> Element {
|
|
|
-//!
|
|
|
-//! // both of these are equivalent
|
|
|
-//! cx.render(rsx!("hello world"))
|
|
|
-//!
|
|
|
-//! rsx!(cx, "hello world!")
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Putting everything together, we can write a simple component that renders a list of
|
|
|
-//! elements:
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! fn app(cx: Scope) -> Element {
|
|
|
-//! let name = "dave";
|
|
|
-//! cx.render(rsx!(
|
|
|
-//! h1 { "Hello, {name}!" }
|
|
|
-//! div {
|
|
|
-//! class: "my-class",
|
|
|
-//! id: "my-id",
|
|
|
-//!
|
|
|
-//! (0..5).map(|i| rsx!(
|
|
|
-//! div { key: "{i}"
|
|
|
-//! "FizzBuzz: {i}"
|
|
|
-//! }
|
|
|
-//! ))
|
|
|
-//!
|
|
|
-//! }
|
|
|
-//! ))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! ## Components
|
|
|
-//!
|
|
|
-//! We can compose these function components to build a complex app. Each new
|
|
|
-//! component we design must take some Properties. For components with no explicit
|
|
|
-//! properties, we can use the `()` type or simply omit the type altogether.
|
|
|
-//!
|
|
|
-//! In Dioxus, all properties are memoized by default!
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! fn App(cx: Scope) -> Element {
|
|
|
-//! cx.render(rsx!(
|
|
|
-//! Header {
|
|
|
-//! title: "My App",
|
|
|
-//! color: "red",
|
|
|
-//! }
|
|
|
-//! ))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Our `Header` component takes a `title` and a `color` property, which we
|
|
|
-//! declare on an explicit `HeaderProps` struct.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! // The `Props` derive macro lets us add additional functionality to how props are interpreted.
|
|
|
-//! #[derive(Props, PartialEq)]
|
|
|
-//! struct HeaderProps {
|
|
|
-//! title: String,
|
|
|
-//! color: String,
|
|
|
-//! }
|
|
|
-//!
|
|
|
-//! fn Header(cx: Scope<HeaderProps>) -> Element {
|
|
|
-//! cx.render(rsx!(
|
|
|
-//! div {
|
|
|
-//! background_color: "{cx.props.color}"
|
|
|
-//! h1 { "{cx.props.title}" }
|
|
|
-//! }
|
|
|
-//! ))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Components may use the `inline_props` macro to completely inline the props
|
|
|
-//! definition into the function arguments.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! #[inline_props]
|
|
|
-//! fn Header(cx: Scope, title: String, color: String) -> Element {
|
|
|
-//! cx.render(rsx!(
|
|
|
-//! div {
|
|
|
-//! background_color: "{color}"
|
|
|
-//! h1 { "{title}" }
|
|
|
-//! }
|
|
|
-//! ))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Components may also borrow data from their parent component. We just need to
|
|
|
-//! attach some lifetimes to the props struct.
|
|
|
-//! > Note: we don't need to derive `PartialEq` for borrowed props since they cannot be memoized.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! #[derive(Props)]
|
|
|
-//! struct HeaderProps<'a> {
|
|
|
-//! title: &'a str,
|
|
|
-//! color: &'a str,
|
|
|
-//! }
|
|
|
-//!
|
|
|
-//! fn Header<'a>(cx: Scope<'a, HeaderProps<'a>>) -> Element {
|
|
|
-//! cx.render(rsx!(
|
|
|
-//! div {
|
|
|
-//! background_color: "{cx.props.color}"
|
|
|
-//! h1 { "{cx.props.title}" }
|
|
|
-//! }
|
|
|
-//! ))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Components that begin with an uppercase letter may be called with
|
|
|
-//! the traditional (for React) curly-brace syntax like so:
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! rsx!(
|
|
|
-//! Header { title: "My App" }
|
|
|
-//! )
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Alternatively, if your components begin with a lowercase letter, you can use
|
|
|
-//! the function call syntax:
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! rsx!(
|
|
|
-//! header( title: "My App" )
|
|
|
-//! )
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! ## Hooks
|
|
|
-//!
|
|
|
-//! While components are reusable forms of UI elements, hooks are reusable forms
|
|
|
-//! of logic. Hooks provide us a way of retrieving state from the `Scope` and using
|
|
|
-//! it to render UI elements.
|
|
|
-//!
|
|
|
-//! By convention, all hooks are functions that should start with `use_`. We can
|
|
|
-//! use hooks to define state and modify it from within listeners.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! fn app(cx: Scope) -> Element {
|
|
|
-//! let name = use_state(&cx, || "world");
|
|
|
-//!
|
|
|
-//! rsx!(cx, "hello {name}!")
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! Hooks are sensitive to how they are used. To use hooks, you must abide by the
|
|
|
-//! ["rules of hooks" (borrowed from react)](https://reactjs.org/docs/hooks-rules.html):
|
|
|
-//! - Functions with "use_" should not be called in callbacks
|
|
|
-//! - Functions with "use_" should not be called out of order
|
|
|
-//! - Functions with "use_" should not be called in loops or conditionals
|
|
|
-//!
|
|
|
-//! In a sense, hooks let us add a field of state to our component without declaring
|
|
|
-//! an explicit state struct. However, this means we need to "load" the struct in the right
|
|
|
-//! order. If that order is wrong, then the hook will pick the wrong state and panic.
|
|
|
-//!
|
|
|
-//! Most hooks you'll write are simply composition of other hooks:
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! fn use_username(cx: &ScopeState, id: Uuid) -> bool {
|
|
|
-//! let users = use_context::<Users>(cx);
|
|
|
-//! users.get(&id).map(|user| user.logged_in).ok_or(false)
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! To create entirely new foundational hooks, we can use the `use_hook` method on `ScopeState`.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! fn use_mut_string(cx: &ScopeState) -> &mut String {
|
|
|
-//! cx.use_hook(|_| "Hello".to_string())
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! If you want to extend Dioxus with some new functionality, you'll probably want to implement a new hook from scratch.
|
|
|
-//!
|
|
|
-//! ## Putting it all together
|
|
|
-//!
|
|
|
-//! Using components, templates, and hooks, we can build a simple app.
|
|
|
-//!
|
|
|
-//! ```rust, ignore
|
|
|
-//! use dioxus::prelude::*;
|
|
|
-//!
|
|
|
-//! fn main() {
|
|
|
-//! dioxus::desktop::launch(App);
|
|
|
-//! }
|
|
|
-//!
|
|
|
-//! fn App(cx: Scope) -> Element {
|
|
|
-//! let mut count = use_state(&cx, || 0);
|
|
|
-//!
|
|
|
-//! cx.render(rsx!(
|
|
|
-//! div { "Count: {count}" }
|
|
|
-//! button { onclick: move |_| count += 1, "Increment" }
|
|
|
-//! button { onclick: move |_| count -= 1, "Decrement" }
|
|
|
-//! ))
|
|
|
-//! }
|
|
|
-//! ```
|
|
|
-//!
|
|
|
-//! ## Features
|
|
|
-//!
|
|
|
-//! This overview doesn't cover everything. Make sure to check out the tutorial and reference guide on the official
|
|
|
-//! website for more details.
|
|
|
-//!
|
|
|
-//! Beyond this overview, Dioxus supports:
|
|
|
-//! - Server-side rendering
|
|
|
-//! - Concurrent rendering (with async support)
|
|
|
-//! - Web/Desktop/Mobile support
|
|
|
-//! - Pre-rendering and rehydration
|
|
|
-//! - Fragments, Portals, and Suspense
|
|
|
-//! - Inline-styles
|
|
|
-//! - Custom event handlers
|
|
|
-//! - Custom elements
|
|
|
-//! - Basic fine-grained reactivity (IE SolidJS/Svelte)
|
|
|
-//! - and more!
|
|
|
-//!
|
|
|
-//! Good luck!
|
|
|
-//!
|
|
|
-//! ## Inspiration, Resources, Alternatives and Credits
|
|
|
-//!
|
|
|
-//! Dioxus is inspired by:
|
|
|
-//! - React: for its hooks, concurrency, suspense
|
|
|
-//! - Dodrio: for its research in bump allocation, double buffering, and diffing architecture
|
|
|
-//!
|
|
|
-//! Alternatives to Dioxus include:
|
|
|
-//! - Yew: supports function components and web, but no SSR, borrowed data, or bump allocation. Rather slow at times.
|
|
|
-//! - Percy: supports function components, web, ssr, but lacks state management
|
|
|
-//! - Sycamore: supports function components, web, ssr, but closer to SolidJS than React
|
|
|
-//! - MoonZoom/Seed: opinionated frameworks based on the Elm model (message, update) - no hooks
|
|
|
-//!
|
|
|
-//! We've put a lot of work into making Dioxus ergonomic and *familiar*.
|
|
|
-//! Our target audience is TypeSrcipt developers looking to switch to Rust for the web - so we need to be comparabale to React.
|
|
|
+#![doc = include_str!("../notes/readme.md")]
|
|
|
|
|
|
pub use dioxus_core as core;
|
|
|
|