chore: finish tweaking context api

packages/hooks/src/usecontext.rs

@@ -1,13 +1,18 @@
 use dioxus_core::ScopeState;
+use std::rc::Rc;
 
-/// Consume some context in the tree
-pub fn use_context<T: 'static>(cx: &ScopeState) -> Option<&T> {
-    cx.use_hook(|| cx.consume_context::<T>()).as_deref()
+/// Consume some context in the tree, providing a sharable handle to the value
+pub fn use_context<T: 'static + Clone>(cx: &ScopeState) -> Option<&T> {
+    cx.use_hook(|| cx.consume_context::<T>()).as_ref()
 }
 
 /// Provide some context via the tree and return a reference to it
 ///
 /// Once the context has been provided, it is immutable. Mutations should be done via interior mutability.
-pub fn use_context_provider<T: 'static>(cx: &ScopeState, f: impl FnOnce() -> T) -> &T {
-    cx.use_hook(|| cx.provide_context(f()))
+pub fn use_context_provider<T: 'static + Clone>(cx: &ScopeState, f: impl FnOnce() -> T) -> &T {
+    cx.use_hook(|| {
+        let val = f();
+        cx.provide_context(val.clone());
+        val
+    })
 }