wip: pass more events

packages/core/src/events.rs

@@ -1,5 +1,38 @@
 use bumpalo::boxed::Box as BumpBox;
-use std::{any::Any, cell::RefCell};
+use std::{
+    any::Any,
+    cell::{Cell, RefCell},
+    fmt::Debug,
+    rc::Rc,
+};
+
+pub struct UiEvent<T> {
+    bubble_state: Cell<bool>,
+    data: Rc<T>,
+}
+
+impl<T> UiEvent<T> {
+    pub fn cancel_bubble(&self) {
+        self.bubble_state.set(false);
+    }
+}
+
+impl<T> std::ops::Deref for UiEvent<T> {
+    type Target = Rc<T>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.data
+    }
+}
+
+impl<T: Debug> std::fmt::Debug for UiEvent<T> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("UiEvent")
+            .field("bubble_state", &self.bubble_state)
+            .field("data", &self.data)
+            .finish()
+    }
+}
 
 /// Priority of Event Triggers.
 ///

packages/core/src/factory.rs

@@ -1,4 +1,7 @@
-use std::{cell::Cell, fmt::Arguments};
+use std::{
+    cell::{Cell, RefCell},
+    fmt::Arguments,
+};
 
 use bumpalo::boxed::Box as BumpBox;
 use bumpalo::Bump;
@@ -7,7 +10,7 @@ use std::future::Future;
 use crate::{
     any_props::{AnyProps, VComponentProps},
     arena::ElementId,
-    innerlude::DynamicNode,
+    innerlude::{DynamicNode, EventHandler},
     Attribute, AttributeValue, Element, LazyNodes, Properties, Scope, ScopeState, VNode,
 };
 
@@ -106,6 +109,14 @@ impl ScopeState {
             scope: Cell::new(None),
         }
     }
+
+    /// Create a new [`EventHandler`] from an [`FnMut`]
+    pub fn event_handler<'a, T>(&'a self, f: impl FnMut(T) + 'a) -> EventHandler<'a, T> {
+        let handler: &mut dyn FnMut(T) = self.bump().alloc(f);
+        let caller = unsafe { BumpBox::from_raw(handler as *mut dyn FnMut(T)) };
+        let callback = RefCell::new(Some(caller));
+        EventHandler { callback }
+    }
 }
 
 pub trait ComponentReturn<'a, A = ()> {

packages/core/src/lib.rs

@@ -92,6 +92,7 @@ pub use crate::innerlude::{
     Template,
     TemplateAttribute,
     TemplateNode,
+    UiEvent,
     VNode,
     VirtualDom,
 };
@@ -103,7 +104,7 @@ pub mod prelude {
     pub use crate::innerlude::{
         fc_to_builder, Element, EventHandler, EventPriority, Fragment, LazyNodes, NodeFactory,
         Properties, Scope, ScopeId, ScopeState, Scoped, TaskId, Template, TemplateAttribute,
-        TemplateNode, VNode, VirtualDom,
+        TemplateNode, UiEvent, VNode, VirtualDom,
     };
 }