eframe web fix: save() on "blur" event

crates/eframe/src/web/app_runner.rs

@@ -191,7 +191,7 @@ impl AppRunner {
     pub fn update_focus(&mut self) {
         let has_focus = self.has_focus();
         if self.input.raw.focused != has_focus {
-            // log::debug!("{} Focus changed to {has_focus}", self.canvas().id());
+            log::trace!("{} Focus changed to {has_focus}", self.canvas().id());
             self.input.set_focus(has_focus);
 
             if !has_focus {

crates/eframe/src/web/events.rs

@@ -103,8 +103,13 @@ fn install_blur_focus(runner_ref: &WebRunner, target: &EventTarget) -> Result<()
     // so we also poll the focus state each frame in `AppRunner::logic`.
     for event_name in ["blur", "focus"] {
         let closure = move |_event: web_sys::MouseEvent, runner: &mut AppRunner| {
-            // log::debug!("{} {event_name:?}", runner.canvas().id());
+            log::trace!("{} {event_name:?}", runner.canvas().id());
             runner.update_focus();
+
+            if event_name == "blur" {
+                // This might be a good time to save the state
+                runner.save();
+            }
         };
 
         runner_ref.add_event_listener(target, event_name, closure)?;

crates/eframe/src/web/text_agent.rs

@@ -148,7 +148,7 @@ impl TextAgent {
             return;
         }
 
-        // log::debug!("Focusing text agent");
+        log::trace!("Focusing text agent");
 
         if let Err(err) = self.input.focus() {
             log::error!("failed to set focus: {}", super::string_from_js_value(&err));
@@ -160,7 +160,7 @@ impl TextAgent {
             return;
         }
 
-        // log::debug!("Blurring text agent");
+        log::trace!("Blurring text agent");
 
         if let Err(err) = self.input.blur() {
             log::error!("failed to set focus: {}", super::string_from_js_value(&err));