iris: move text state into shared resources

examples/tabs/lib.rs

@@ -8,8 +8,8 @@ pub(crate) fn update_info<Rsc: UiRsc>(rsc: &mut Rsc, info: WeakWidget<Text>, vie
         rsc.widgets().len(),
         render_state.get().active_widgets(),
     );
-    if new != *rsc.widgets()[info].content {
-        *rsc.widgets_mut()[info].content = new;
+    if new != rsc.widgets()[info].content() {
+        rsc.widgets_mut()[info].set_text(new);
     }
 }
 
@@ -118,7 +118,7 @@ where
         .attr::<Selectable>(())
         .on(Submit, move |ctx, rsc: &mut Rsc| {
             let w = ctx.widget;
-            let content = w.edit(rsc).take();
+            let content = w(rsc).take();
             let text = wtext(content)
                 .editable(EditMode::MultiLine)
                 .size(30)