Defining a Store

A Store represents state that is shared application-wide. It is initialized on first access, and lives for application lifetime.

Implement Store for your state using the macro.

#![allow(unused)]
fn main() {
extern crate yewdux;
use yewdux::prelude::*;

#[derive(Default, PartialEq, Store)]
struct State {
    count: u32,
}
}

It is also simple to define a Store manually. This is useful when you need finer control over how it is created, or when to notify components.

#![allow(unused)]
fn main() {
extern crate yewdux;
use yewdux::prelude::*;
#[derive(PartialEq)]
struct State {
    count: u32,
}

impl Store for State {
    fn new(_cx: &yewdux::Context) -> Self {
        Self {
            count: Default::default(),
        }
    }

    fn should_notify(&self, old: &Self) -> bool {
        // When this returns true, all components are notified and consequently re-render.
        self != old
    }
}
}

Note: implementing Store doesn't require any additional traits, however Default and PartialEq are required for the macro.