From 434e3c3af7c726ec869ce9ed4a1fcd7a4adc2afc Mon Sep 17 00:00:00 2001
From: shadow cat <shadowcatzero@protonmail.com>
Date: Mon, 8 Dec 2025 00:12:11 -0500
Subject: [PATCH] view + a bunch of fixes or smth idek man

---
 src/bin/test/main.rs     |  7 +---
 src/core/sense.rs        | 30 ++++++++-------
 src/core/text/build.rs   |  4 +-
 src/core/text/edit.rs    |  4 +-
 src/core/text/mod.rs     |  4 +-
 src/layout/color.rs      | 42 +++++++++++++++++----
 src/layout/event.rs      | 79 ++++++++++++++++++++++++++++++++++------
 src/layout/mod.rs        |  2 +
 src/layout/painter.rs    |  4 +-
 src/layout/text.rs       | 13 +++----
 src/layout/ui.rs         | 14 +------
 src/layout/view.rs       | 17 +++++++++
 src/layout/widget.rs     |  2 +-
 src/layout/widget_ref.rs | 61 ++++++++++++-------------------
 src/lib.rs               |  3 ++
 src/util/handle.rs       | 60 ++++++++++++++++++++++++++++++
 src/util/mod.rs          |  2 +
 src/winit/mod.rs         | 14 ++++---
 18 files changed, 253 insertions(+), 109 deletions(-)
 create mode 100644 src/layout/view.rs
 create mode 100644 src/util/handle.rs

diff --git a/src/bin/test/main.rs b/src/bin/test/main.rs
index ba10e70..a13e41d 100644
--- a/src/bin/test/main.rs
+++ b/src/bin/test/main.rs
@@ -1,8 +1,5 @@
 use cosmic_text::Family;
-use iris::{
-    prelude::*,
-    winit::{attr::Selectable, event::Submit, *},
-};
+use iris::prelude::*;
 use len_fns::*;
 use winit::event::WindowEvent;
 
@@ -109,7 +106,7 @@ impl DefaultAppState for Client {
             .text_align(Align::LEFT)
             .size(30)
             .attr::<Selectable>(())
-            .on(Submit, move |ctx| {
+            .on(iris::winit::Submit, move |ctx| {
                 let content = ctx.widget.get_mut().take();
                 let text = wtext(content)
                     .editable(false)
diff --git a/src/core/sense.rs b/src/core/sense.rs
index 423bb90..a1714ca 100644
--- a/src/core/sense.rs
+++ b/src/core/sense.rs
@@ -11,7 +11,7 @@ use crate::{
 };
 
 #[derive(Clone, Copy, PartialEq)]
-pub enum Button {
+pub enum CursorButton {
     Left,
     Right,
     Middle,
@@ -19,9 +19,9 @@ pub enum Button {
 
 #[derive(Clone, Copy, PartialEq)]
 pub enum CursorSense {
-    PressStart(Button),
-    Pressing(Button),
-    PressEnd(Button),
+    PressStart(CursorButton),
+    Pressing(CursorButton),
+    PressEnd(CursorButton),
     HoverStart,
     Hovering,
     HoverEnd,
@@ -32,16 +32,16 @@ pub struct CursorSenses(Vec<CursorSense>);
 
 impl CursorSense {
     pub fn click() -> Self {
-        Self::PressStart(Button::Left)
+        Self::PressStart(CursorButton::Left)
     }
     pub fn click_or_drag() -> CursorSenses {
-        Self::click() | Self::Pressing(Button::Left)
+        Self::click() | Self::Pressing(CursorButton::Left)
     }
     pub fn unclick() -> Self {
-        Self::PressEnd(Button::Left)
+        Self::PressEnd(CursorButton::Left)
     }
     pub fn is_dragging(&self) -> bool {
-        matches!(self, CursorSense::Pressing(Button::Left))
+        matches!(self, CursorSense::Pressing(CursorButton::Left))
     }
 }
 
@@ -61,11 +61,11 @@ pub struct CursorButtons {
 }
 
 impl CursorButtons {
-    pub fn select(&self, button: &Button) -> &ActivationState {
+    pub fn select(&self, button: &CursorButton) -> &ActivationState {
         match button {
-            Button::Left => &self.left,
-            Button::Right => &self.right,
-            Button::Middle => &self.middle,
+            CursorButton::Left => &self.left,
+            CursorButton::Right => &self.right,
+            CursorButton::Middle => &self.middle,
         }
     }
 
@@ -205,7 +205,11 @@ impl<Ctx: 'static> CursorModule<Ctx> {
                             scroll_delta: cursor.scroll_delta,
                             sense,
                         };
-                        (sensor.f)(EventCtx { ui, state: ctx, data });
+                        (sensor.f)(EventCtx {
+                            ui,
+                            state: ctx,
+                            data,
+                        });
                     }
                 }
             }
diff --git a/src/core/text/build.rs b/src/core/text/build.rs
index cdc9872..b56a09c 100644
--- a/src/core/text/build.rs
+++ b/src/core/text/build.rs
@@ -75,7 +75,7 @@ impl TextBuilderOutput for TextOutput {
             builder.attrs.line_height,
         ));
         let hint = builder.hint.get(ui);
-        let font_system = &mut ui.data.text.borrow_mut().font_system;
+        let font_system = &mut ui.data.text.get_mut().font_system;
         buf.set_text(font_system, &builder.content, &Attrs::new(), SHAPING, None);
         let mut text = Text {
             content: builder.content.into(),
@@ -103,7 +103,7 @@ impl TextBuilderOutput for TextEditOutput {
             builder.output.single_line,
             ui.data.text.clone(),
         );
-        let font_system = &mut ui.data.text.borrow_mut().font_system;
+        let font_system = &mut ui.data.text.get_mut().font_system;
         text.buf
             .set_text(font_system, &builder.content, &Attrs::new(), SHAPING, None);
         builder.attrs.apply(font_system, &mut text.buf, None);
diff --git a/src/core/text/edit.rs b/src/core/text/edit.rs
index 66da6cb..c108fe2 100644
--- a/src/core/text/edit.rs
+++ b/src/core/text/edit.rs
@@ -60,7 +60,7 @@ impl TextEdit {
     pub fn set(&mut self, text: &str) {
         let text = self.string(text);
         self.view.buf.set_text(
-            &mut self.data.borrow_mut().font_system,
+            &mut self.data.get_mut().font_system,
             &text,
             &Attrs::new(),
             SHAPING,
@@ -238,7 +238,7 @@ impl TextEdit {
         self.view
             .buf
             .cursor_motion(
-                &mut self.data.borrow_mut().font_system,
+                &mut self.data.get_mut().font_system,
                 cursor,
                 None,
                 motion,
diff --git a/src/core/text/mod.rs b/src/core/text/mod.rs
index bd1fd45..8fd671d 100644
--- a/src/core/text/mod.rs
+++ b/src/core/text/mod.rs
@@ -67,7 +67,7 @@ impl TextView {
             return tex.clone();
         }
         self.width = width;
-        let mut text_data = ctx.text.borrow_mut();
+        let mut text_data = ctx.text.get_mut();
         self.attrs
             .apply(&mut text_data.font_system, &mut self.buf, width);
         self.buf
@@ -139,7 +139,7 @@ impl Text {
         if self.content.changed {
             self.content.changed = false;
             self.view.buf.set_text(
-                &mut ctx.text.borrow_mut().font_system,
+                &mut ctx.text.get_mut().font_system,
                 &self.content,
                 &Attrs::new().family(self.view.attrs.family),
                 SHAPING,
diff --git a/src/layout/color.rs b/src/layout/color.rs
index 345ef0c..01ef1de 100644
--- a/src/layout/color.rs
+++ b/src/layout/color.rs
@@ -1,5 +1,7 @@
 #![allow(clippy::multiple_bound_locations)]
 
+use std::marker::Destruct;
+
 /// stored in linear for sane manipulation
 #[repr(C)]
 #[derive(Clone, Copy, Hash, PartialEq, Eq, bytemuck::Zeroable, Debug)]
@@ -56,23 +58,47 @@ pub trait ColorNum {
     const MAX: Self;
 }
 
-impl<T: ColorNum + F32Conversion> Color<T> {
-    pub fn mul_rgb(self, amt: impl F32Conversion) -> Self {
+macro_rules! map_rgb {
+    ($x:ident,$self:ident, $e:tt) => {
+        #[allow(unused_braces)]
+        Self {
+            r: {
+                let $x = $self.r;
+                $e
+            },
+            g: {
+                let $x = $self.g;
+                $e
+            },
+            b: {
+                let $x = $self.b;
+                $e
+            },
+            a: $self.a,
+        }
+    };
+}
+
+impl<T: ColorNum + const F32Conversion> Color<T>
+where
+    Self: const Destruct,
+{
+    pub const fn mul_rgb(self, amt: impl const F32Conversion) -> Self {
         let amt = amt.to();
-        self.map_rgb(|x| T::from(x.to() * amt))
+        map_rgb!(x, self, { T::from(x.to() * amt) })
     }
 
-    pub fn add_rgb(self, amt: impl F32Conversion) -> Self {
+    pub const fn add_rgb(self, amt: impl const F32Conversion) -> Self {
         let amt = amt.to();
-        self.map_rgb(|x| T::from(x.to() + amt))
+        map_rgb!(x, self, { T::from(x.to() + amt) })
     }
 
-    pub fn darker(self, amt: f32) -> Self {
+    pub const fn darker(self, amt: f32) -> Self {
         self.mul_rgb(1.0 - amt)
     }
 
-    pub fn brighter(self, amt: f32) -> Self {
-        self.map_rgb(|x| {
+    pub const fn brighter(self, amt: f32) -> Self {
+        map_rgb!(x, self, {
             let x = x.to();
             T::from(x + (1.0 - x) * amt)
         })
diff --git a/src/layout/event.rs b/src/layout/event.rs
index 66dc3ad..c6a4f01 100644
--- a/src/layout/event.rs
+++ b/src/layout/event.rs
@@ -28,7 +28,10 @@ pub trait EventFn<Ctx, Data>: Fn(EventCtx<Ctx, Data>) + 'static {}
 impl<F: Fn(EventCtx<Ctx, Data>) + 'static, Ctx, Data> EventFn<Ctx, Data> for F {}
 
 pub trait WidgetEventFn<Ctx, Data, W: ?Sized>: Fn(EventIdCtx<Ctx, Data, W>) + 'static {}
-impl<F: Fn(EventIdCtx<Ctx, Data, W>) + 'static, Ctx, Data, W> WidgetEventFn<Ctx, Data, W> for F {}
+impl<F: Fn(EventIdCtx<Ctx, Data, W>) + 'static, Ctx, Data, W: ?Sized> WidgetEventFn<Ctx, Data, W>
+    for F
+{
+}
 
 // TODO: naming in here is a bit weird like eventable
 #[macro_export]
@@ -40,6 +43,7 @@ macro_rules! event_ctx {
             #[allow(unused_imports)]
             use $crate::prelude::*;
 
+            #[allow(unused)]
             pub trait EventableCtx<W: ?Sized, Tag, Ctx: 'static> {
                 fn on<E: Event>(
                     self,
@@ -57,6 +61,33 @@ macro_rules! event_ctx {
                     eventable::Eventable::on(self, event, f)
                 }
             }
+
+            #[allow(unused)]
+            pub trait EventableCtxUi<W: ?Sized, Tag, Ctx: 'static>
+            where
+                WidgetRef<W>: EventableCtx<W, Tag, Ctx>,
+            {
+                fn on<E: Event>(
+                    &mut self,
+                    widget: &WidgetRef<W>,
+                    event: E,
+                    f: impl WidgetEventFn<Ctx, E::Data, W>,
+                );
+            }
+
+            impl<W: ?Sized + 'static, Tag> EventableCtxUi<W, Tag, $ty> for Ui
+            where
+                WidgetRef<W>: EventableCtx<W, Tag, $ty>,
+            {
+                fn on<E: Event>(
+                    &mut self,
+                    widget: &WidgetRef<W>,
+                    event: E,
+                    f: impl WidgetEventFn<$ty, E::Data, W>,
+                ) {
+                    self.register_widget_event(&widget, event, f);
+                }
+            }
         }
         use local_event_trait::*;
     };
@@ -82,21 +113,47 @@ pub mod eventable {
         ) -> impl WidgetIdFn<WL::Widget> {
             move |ui| {
                 let id = self.add(ui);
-                let id_ = id.weak();
-                ui.register_event(&id, event, move |ctx| {
-                    f(EventIdCtx {
-                        widget: &id_.expect_strong(),
-                        state: ctx.state,
-                        data: ctx.data,
-                        ui: ctx.ui,
-                    });
-                });
+                ui.register_widget_event(&id, event, f);
                 id
             }
         }
     }
 }
 
+impl Ui {
+    pub fn register_event<W: ?Sized, E: Event, Ctx: 'static>(
+        &mut self,
+        id: &WidgetRef<W>,
+        event: E,
+        f: impl EventFn<Ctx, E::Data>,
+    ) {
+        self.data
+            .modules
+            .get_mut::<E::Module<Ctx>>()
+            .register(id.id(), event, f);
+    }
+
+    pub fn register_widget_event<W: ?Sized + 'static, E: Event, Ctx: 'static>(
+        &mut self,
+        id: &WidgetRef<W>,
+        event: E,
+        f: impl WidgetEventFn<Ctx, E::Data, W>,
+    ) {
+        let id_ = id.weak();
+        self.data
+            .modules
+            .get_mut::<E::Module<Ctx>>()
+            .register(id.id(), event, move |ctx| {
+                f(EventIdCtx {
+                    widget: &id_.expect_strong(),
+                    ui: ctx.ui,
+                    state: ctx.state,
+                    data: ctx.data,
+                })
+            });
+    }
+}
+
 pub trait DefaultEvent: Hash + Eq + 'static {
     type Data: Clone;
 }
@@ -193,7 +250,7 @@ impl<E: Event + 'static, Ctx: 'static> Default for DefaultEventModule<E, Ctx> {
 }
 
 impl Ui {
-    pub fn run_event<E: Event, Ctx: 'static, W>(
+    pub fn run_event<E: Event, Ctx: 'static, W: ?Sized>(
         &mut self,
         ctx: &mut Ctx,
         id: &WidgetRef<W>,
diff --git a/src/layout/mod.rs b/src/layout/mod.rs
index 9665692..89ba84c 100644
--- a/src/layout/mod.rs
+++ b/src/layout/mod.rs
@@ -9,6 +9,7 @@ mod painter;
 mod text;
 mod texture;
 mod ui;
+mod view;
 mod widget;
 mod widget_ref;
 mod widgets;
@@ -24,6 +25,7 @@ pub use painter::*;
 pub use text::*;
 pub use texture::*;
 pub use ui::*;
+pub use view::*;
 pub use widget::*;
 pub use widget_ref::*;
 pub use widgets::*;
diff --git a/src/layout/painter.rs b/src/layout/painter.rs
index c1b23c6..2bc56c9 100644
--- a/src/layout/painter.rs
+++ b/src/layout/painter.rs
@@ -450,7 +450,7 @@ impl<'a, 'c> Painter<'a, 'c> {
     pub fn render_text(&mut self, buffer: &mut TextBuffer, attrs: &TextAttrs) -> RenderedText {
         self.ctx
             .text
-            .borrow_mut()
+            .get_mut()
             .draw(buffer, attrs, self.ctx.textures)
     }
 
@@ -604,6 +604,6 @@ impl SizeCtx<'_> {
     }
 
     pub fn draw_text(&mut self, buffer: &mut TextBuffer, attrs: &TextAttrs) -> RenderedText {
-        self.text.borrow_mut().draw(buffer, attrs, self.textures)
+        self.text.get_mut().draw(buffer, attrs, self.textures)
     }
 }
diff --git a/src/layout/text.rs b/src/layout/text.rs
index 457e7ec..25d850c 100644
--- a/src/layout/text.rs
+++ b/src/layout/text.rs
@@ -1,10 +1,9 @@
-use std::{
-    cell::RefCell,
-    rc::Rc,
-    simd::{Simd, num::SimdUint},
-};
+use std::simd::{Simd, num::SimdUint};
 
-use crate::layout::{Align, RegionAlign, TextureHandle, Textures, UiColor, Vec2};
+use crate::{
+    layout::{Align, RegionAlign, TextureHandle, Textures, UiColor, Vec2},
+    util::Handle,
+};
 use cosmic_text::{
     Attrs, AttrsList, Buffer, CacheKey, Color, Family, FontSystem, Metrics, Placement, SwashCache,
     SwashContent,
@@ -16,7 +15,7 @@ pub mod text_lib {
     pub use cosmic_text::*;
 }
 
-pub type TextData = Rc<RefCell<TextDataInner>>;
+pub type TextData = Handle<TextDataInner>;
 
 pub struct TextDataInner {
     pub font_system: FontSystem,
diff --git a/src/layout/ui.rs b/src/layout/ui.rs
index 153ec33..52c23dc 100644
--- a/src/layout/ui.rs
+++ b/src/layout/ui.rs
@@ -3,7 +3,7 @@ use image::DynamicImage;
 use crate::{
     layout::{
         Event, EventFn, EventModule, IdLike, PainterData, PixelRegion, TextureHandle, Vec2, Widget,
-        WidgetInstance, WidgetLike, WidgetRef, WidgetUpdate,
+        WidgetEventFn, WidgetInstance, WidgetLike, WidgetRef, WidgetUpdate,
     },
     util::{HashSet, Id},
 };
@@ -42,18 +42,6 @@ impl Ui {
         self.data.textures.add(image)
     }
 
-    pub fn register_event<W: ?Sized, E: Event, Ctx: 'static>(
-        &mut self,
-        id: &WidgetRef<W>,
-        event: E,
-        f: impl EventFn<Ctx, E::Data>,
-    ) {
-        self.data
-            .modules
-            .get_mut::<E::Module<Ctx>>()
-            .register(id.id(), event, f);
-    }
-
     pub fn resize(&mut self, size: impl Into<Vec2>) {
         self.data.output_size = size.into();
         self.resized = true;
diff --git a/src/layout/view.rs b/src/layout/view.rs
new file mode 100644
index 0000000..74c706a
--- /dev/null
+++ b/src/layout/view.rs
@@ -0,0 +1,17 @@
+use crate::layout::{Widget, WidgetLike, WidgetRef};
+use std::marker::Unsize;
+
+pub trait WidgetView {
+    type Widget: Widget + ?Sized + Unsize<dyn Widget> = dyn Widget;
+    fn view(&self) -> &WidgetRef<Self::Widget>;
+}
+
+pub struct ViewTag;
+
+impl<WV: WidgetView> WidgetLike<ViewTag> for WV {
+    type Widget = WV::Widget;
+
+    fn add(self, _ui: &mut super::Ui) -> WidgetRef<Self::Widget> {
+        self.view().clone()
+    }
+}
diff --git a/src/layout/widget.rs b/src/layout/widget.rs
index 008637a..cdd04d7 100644
--- a/src/layout/widget.rs
+++ b/src/layout/widget.rs
@@ -61,7 +61,7 @@ pub trait WidgetLike<Tag> {
 /// A function that returns a widget given a UI.
 /// Useful for defining trait functions on widgets that create a parent widget so that the children
 /// don't need to be IDs yet
-pub trait WidgetFn<W: Widget>: FnOnce(&mut Ui) -> W {}
+pub trait WidgetFn<W: Widget + ?Sized>: FnOnce(&mut Ui) -> W {}
 impl<W: Widget, F: FnOnce(&mut Ui) -> W> WidgetFn<W> for F {}
 
 impl<W: Widget, F: FnOnce(&mut Ui) -> W> WidgetLike<FnTag> for F {
diff --git a/src/layout/widget_ref.rs b/src/layout/widget_ref.rs
index c788e52..738d09f 100644
--- a/src/layout/widget_ref.rs
+++ b/src/layout/widget_ref.rs
@@ -1,24 +1,20 @@
 use std::{
-    cell::{Ref, RefCell, RefMut},
+    cell::{Ref, RefMut},
     marker::Unsize,
-    rc::{Rc, Weak},
+    rc::Rc,
     sync::mpsc::Sender,
 };
 
 use crate::{
     layout::{Ui, Widget, WidgetLike},
-    util::Id,
+    util::{Handle, Id, WeakHandle},
 };
 
-/// An identifier for a widget that can index a UI to get the associated widget.
-/// It should always remain valid; it keeps a ref count and removes the widget from the UI if all
-/// references are dropped.
-///
-/// W does not need to implement widget so that AnyWidget is valid;
-/// Instead, add generic bounds on methods that take an ID if they need specific data.
+/// An handle for a widget in a UI.
 ///
 /// TODO: ergonomic clones when they get put in rust-analyzer & don't cause ICEs?
-pub struct WidgetRef<W: ?Sized = dyn Widget>(Rc<RefCell<Inner<W>>>);
+pub struct WidgetRef<W: ?Sized = dyn Widget>(Handle<Inner<W>>);
+pub struct WeakWidgetRef<W: ?Sized = dyn Widget>(WeakHandle<Inner<W>>);
 
 struct Inner<W: ?Sized> {
     id: Id,
@@ -32,8 +28,6 @@ pub enum WidgetUpdate {
     Mutate(Id),
 }
 
-pub struct WeakWidgetRef<W: ?Sized = dyn Widget>(Weak<RefCell<Inner<W>>>);
-
 impl<W> PartialEq for WidgetRef<W> {
     fn eq(&self, other: &Self) -> bool {
         self.id() == other.id()
@@ -58,12 +52,15 @@ impl<W: Widget> WidgetRef<W> {
         if let (Some(first), Some(last)) = (label.find(":"), label.rfind(":")) {
             label = label.split_at(first).0.to_string() + "::" + label.split_at(last + 1).1;
         }
-        Self(Rc::new(RefCell::new(Inner {
-            widget,
-            id,
-            send,
-            label,
-        })))
+        Self(
+            Inner {
+                widget,
+                id,
+                send,
+                label,
+            }
+            .into(),
+        )
     }
 }
 
@@ -78,44 +75,44 @@ impl<W: Widget + ?Sized + Unsize<dyn Widget>> WidgetRef<W> {
 
 impl<W: ?Sized> WidgetRef<W> {
     pub fn id(&self) -> Id {
-        self.0.borrow().id
+        self.0.get().id
     }
 
     pub fn get(&self) -> Ref<'_, W> {
-        Ref::map(self.0.borrow(), |i| &i.widget)
+        Ref::map(self.0.get(), |i| &i.widget)
     }
 
     pub fn get_mut(&self) -> RefMut<'_, W> {
-        let inner = self.0.borrow_mut();
+        let inner = self.0.get_mut();
         let _ = inner.send.send(WidgetUpdate::Mutate(inner.id));
         RefMut::map(inner, |i| &mut i.widget)
     }
 
     pub fn get_mut_quiet(&self) -> RefMut<'_, W> {
-        RefMut::map(self.0.borrow_mut(), |i| &mut i.widget)
+        RefMut::map(self.0.get_mut(), |i| &mut i.widget)
     }
 
     pub fn get_label(&self) -> Ref<'_, String> {
-        Ref::map(self.0.borrow(), |i| &i.label)
+        Ref::map(self.0.get(), |i| &i.label)
     }
 
     pub fn set_label(&self, label: impl Into<String>) {
-        self.0.borrow_mut().label = label.into();
+        self.0.get_mut().label = label.into();
     }
 
     pub fn refs(&self) -> usize {
-        Rc::strong_count(&self.0)
+        self.0.refs()
     }
 
     pub fn weak(&self) -> WeakWidgetRef<W> {
-        WeakWidgetRef(Rc::downgrade(&self.0))
+        WeakWidgetRef(self.0.weak())
     }
 }
 
 impl<W: ?Sized> WeakWidgetRef<W> {
     /// should guarantee that widget is still valid to prevent indexing failures
     pub(crate) fn expect_strong(&self) -> WidgetRef<W> {
-        WidgetRef(self.0.upgrade().expect("widget should not be dropped"))
+        WidgetRef(self.0.strong().expect("widget should not be dropped"))
     }
 }
 
@@ -156,16 +153,6 @@ impl<W: Widget + ?Sized + Unsize<dyn Widget> + 'static, F: FnOnce(&mut Ui) -> Wi
     }
 }
 
-pub trait WidgetIdLike<W> {
-    fn rf(self, send: &Sender<Id>) -> WidgetRef<W>;
-}
-
-impl<W> WidgetIdLike<W> for &WidgetRef<W> {
-    fn rf(self, _: &Sender<Id>) -> WidgetRef<W> {
-        self.clone()
-    }
-}
-
 pub trait IdLike<W> {
     fn id(&self) -> Id;
 }
diff --git a/src/lib.rs b/src/lib.rs
index dc76b9b..f80ef24 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,6 +11,7 @@
 #![feature(gen_blocks)]
 #![feature(associated_type_defaults)]
 #![feature(unsize)]
+#![feature(coerce_unsized)]
 
 pub mod core;
 pub mod layout;
@@ -22,4 +23,6 @@ pub mod prelude {
     pub use crate::core::*;
     pub use crate::layout::*;
     pub use crate::render::*;
+    pub use crate::util::Handle;
+    pub use crate::winit::*;
 }
diff --git a/src/util/handle.rs b/src/util/handle.rs
new file mode 100644
index 0000000..7c4c604
--- /dev/null
+++ b/src/util/handle.rs
@@ -0,0 +1,60 @@
+use std::{
+    cell::{Ref, RefCell, RefMut},
+    marker::Unsize,
+    ops::CoerceUnsized,
+    rc::{Rc, Weak},
+};
+
+pub struct Handle<T: ?Sized>(Rc<RefCell<T>>);
+pub struct WeakHandle<T: ?Sized>(Weak<RefCell<T>>);
+
+impl<T: ?Sized> Handle<T> {
+    pub fn get(&self) -> Ref<T> {
+        self.0.borrow()
+    }
+
+    pub fn get_mut(&self) -> RefMut<'_, T> {
+        self.0.borrow_mut()
+    }
+
+    pub fn refs(&self) -> usize {
+        Rc::strong_count(&self.0)
+    }
+
+    pub fn weak(&self) -> WeakHandle<T> {
+        WeakHandle(Rc::downgrade(&self.0))
+    }
+}
+
+impl<T: ?Sized> WeakHandle<T> {
+    pub fn strong(&self) -> Option<Handle<T>> {
+        Some(Handle(self.0.upgrade()?))
+    }
+}
+
+impl<T: ?Sized> Clone for Handle<T> {
+    fn clone(&self) -> Self {
+        Self(self.0.clone())
+    }
+}
+
+impl<T: ?Sized> Clone for WeakHandle<T> {
+    fn clone(&self) -> Self {
+        Self(self.0.clone())
+    }
+}
+
+impl<T: ?Sized + Default> Default for Handle<T> {
+    fn default() -> Self {
+        Self(Default::default())
+    }
+}
+
+impl<T> From<T> for Handle<T> {
+    fn from(value: T) -> Self {
+        Self(Rc::new(RefCell::new(value)))
+    }
+}
+
+impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Handle<U>> for Handle<T> {}
+impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<WeakHandle<U>> for WeakHandle<T> {}
diff --git a/src/util/mod.rs b/src/util/mod.rs
index 01215d7..95bc474 100644
--- a/src/util/mod.rs
+++ b/src/util/mod.rs
@@ -4,6 +4,7 @@ mod id;
 mod math;
 mod refcount;
 mod vec2;
+mod handle;
 
 pub(crate) use arena::*;
 pub use change::*;
@@ -11,6 +12,7 @@ pub(crate) use id::*;
 pub(crate) use math::*;
 pub(crate) use refcount::*;
 pub use vec2::*;
+pub use handle::*;
 
 pub type HashMap<K, V> = fxhash::FxHashMap<K, V>;
 pub type HashSet<K> = fxhash::FxHashSet<K>;
diff --git a/src/winit/mod.rs b/src/winit/mod.rs
index ab1c0e0..f20fc4b 100644
--- a/src/winit/mod.rs
+++ b/src/winit/mod.rs
@@ -1,6 +1,4 @@
 use crate::prelude::*;
-use crate::winit::event::{Edited, Submit};
-use crate::winit::{input::Input, render::UiRenderer};
 use arboard::Clipboard;
 use std::sync::Arc;
 use std::time::Instant;
@@ -9,12 +7,16 @@ use winit::event_loop::{ActiveEventLoop, EventLoopProxy};
 use winit::window::{Window, WindowAttributes};
 
 mod app;
-pub mod attr;
-pub mod event;
-pub mod input;
-pub mod render;
+mod attr;
+mod event;
+mod input;
+mod render;
 
 pub use app::*;
+pub use attr::*;
+pub use event::*;
+pub use input::*;
+pub use render::*;
 
 pub type Proxy<Event> = EventLoopProxy<Event>;
 pub type DefaultApp<Data> = App<DefaultState<Data>>;