wip: examples

packages/hooks/src/useref.rs

@@ -0,0 +1,38 @@
+use std::cell::{Ref, RefCell, RefMut};
+
+use dioxus_core::Context;
+
+pub struct UseRef<'a, T> {
+    inner: &'a RefCell<T>,
+}
+
+impl<'a, T> UseRef<'a, T> {
+    pub fn read(&self) -> Ref<'_, T> {
+        self.inner.borrow()
+    }
+
+    pub fn read_write(&self) -> (Ref<'_, T>, &Self) {
+        (self.read(), self)
+    }
+
+    /// Calling "write" will force the component to re-render
+    pub fn write(&self) -> RefMut<'_, T> {
+        self.inner.borrow_mut()
+    }
+
+    /// Allows the ability to write the value without forcing a re-render
+    pub fn write_silent(&self) -> RefMut<'_, T> {
+        self.inner.borrow_mut()
+    }
+}
+
+impl<T> Clone for UseRef<'_, T> {
+    fn clone(&self) -> Self {
+        Self { inner: self.inner }
+    }
+}
+impl<T> Copy for UseRef<'_, T> {}
+
+pub fn use_ref<P, T: 'static>(cx: Context<P>, f: impl FnOnce() -> T) -> UseRef<T> {
+    cx.use_hook(|_| RefCell::new(f()), |f| UseRef { inner: f }, |_| {})
+}