wip: memoize dom in the prescence of identical components

packages/web/src/dom.rs

@@ -274,7 +274,21 @@ impl WebsysDom {
                 // "Result" cannot be received from JS
                 // Instead, we just build and immediately execute a closure that returns result
                 match decode_trigger(event) {
-                    Ok(synthetic_event) => trigger.as_ref()(SchedulerMsg::Event(synthetic_event)),
+                    Ok(synthetic_event) => {
+                        let target = event.target().unwrap();
+                        if let Some(node) = target.dyn_ref::<HtmlElement>() {
+                            if let Some(name) = node.get_attribute("dioxus-prevent-default") {
+                                if name == synthetic_event.name
+                                    || name.trim_start_matches("on") == synthetic_event.name
+                                {
+                                    log::debug!("Preventing default");
+                                    event.prevent_default();
+                                }
+                            }
+                        }
+
+                        trigger.as_ref()(SchedulerMsg::Event(synthetic_event))
+                    }
                     Err(e) => log::error!("Error decoding Dioxus event attribute. {:#?}", e),
                 };
             });

packages/web/src/lib.rs

@@ -157,6 +157,7 @@ pub async fn run_with_props<T: 'static + Send>(root: Component<T>, root_props: T
 
     let mut websys_dom = dom::WebsysDom::new(root_el, cfg, sender_callback);
 
+    log::debug!("rebuilding app");
     let mut mutations = dom.rebuild();
 
     // hydrating is simply running the dom for a single render. If the page is already written, then the corresponding
@@ -168,10 +169,13 @@ pub async fn run_with_props<T: 'static + Send>(root: Component<T>, root_props: T
     let work_loop = ric_raf::RafLoop::new();
 
     loop {
+        log::debug!("waiting for work");
         // if virtualdom has nothing, wait for it to have something before requesting idle time
         // if there is work then this future resolves immediately.
         dom.wait_for_work().await;
 
+        log::debug!("working..");
+
         // wait for the mainthread to schedule us in
         let mut deadline = work_loop.wait_for_idle_time().await;