abuse macros..

core/src/event/ctx.rs

@@ -1,4 +1,4 @@
-use crate::{HasEvents, HasState, HasUi, Ui, Widget, WidgetRef};
+use crate::{HasEvents, HasState, HasUi, StateLike, Ui, Widget, WidgetRef};
 use std::ops::{Deref, DerefMut};
 
 pub struct EventCtx<'a, State, Data> {
@@ -26,7 +26,7 @@ impl<State: HasUi, Data, W: ?Sized> DerefMut for EventIdCtx<'_, State, Data, W>
     }
 }
 
-impl<'a, State: HasUi, Data, W: Widget> EventIdCtx<'a, State, Data, W> {
+impl<State: HasUi, Data, W: Widget> EventIdCtx<'_, State, Data, W> {
     pub fn widget(&mut self) -> &mut W {
         &mut self.state.get_mut()[self.widget]
     }
@@ -57,3 +57,60 @@ impl<State: HasEvents<State = State>, Data, W: Widget> HasEvents
         self.state.events_mut()
     }
 }
+
+impl<State, Data, W: Widget> StateLike<State> for EventIdCtx<'_, State, Data, W> {
+    fn as_state(&mut self) -> &mut State {
+        self.state
+    }
+}
+
+// fn test() {
+//     use crate::*;
+//     struct ClientRsc;
+//     impl<State, Data> HasUi for EventCtx<'_, State, Data> {
+//         fn get(&self) -> &Ui {
+//             todo!()
+//         }
+//
+//         fn get_mut(&mut self) -> &mut Ui {
+//             todo!()
+//         }
+//     }
+//     fn on(_: impl for<'a> EventFn<ClientRsc, &'a mut i32>) {}
+//
+//     pub trait WidgetLike<State: HasUi, Tag>: Sized {
+//         type Widget: Widget + ?Sized + std::marker::Unsize<dyn Widget>;
+//
+//         fn add(self, state: &mut State) -> WidgetHandle<Self::Widget>;
+//
+//         fn with_id<W2>(
+//             self,
+//             f: impl FnOnce(&mut State, WidgetHandle<Self::Widget>) -> WidgetHandle<W2>,
+//         ) -> impl WidgetIdFn<State, W2> {
+//             move |state| {
+//                 let id = self.add(state);
+//                 f(state, id)
+//             }
+//         }
+//
+//         fn set_root(self, state: &mut State) {
+//             state.get_mut().root = Some(self.add(state));
+//         }
+//
+//         fn handles(self, state: &mut State) -> WidgetHandles<Self::Widget> {
+//             self.add(state).handles()
+//         }
+//     }
+//
+//     pub struct WidgetTag;
+//     impl<State: HasUi, W: Widget> WidgetLike<State, WidgetTag> for W {
+//         type Widget = W;
+//         fn add(self, state: &mut State) -> WidgetHandle<W> {
+//             state.get_mut().add_widget(self)
+//         }
+//     }
+//
+//     on(move |ctx| {
+//         ().add(ctx);
+//     });
+// }