From 403220580045aa7c272f1a06ff2a0194d18f88b3 Mon Sep 17 00:00:00 2001
From: vikingowl <christian@nachtigall.dev>
Date: Sat, 28 Mar 2026 08:51:33 +0100
Subject: [PATCH] perf(ui): defer initial query to after window.present()

update_results('') was called inside MainWindow::new(), blocking the
window from appearing until the daemon responded. Move it to a
glib::idle_add_local_once callback scheduled after present() so the
window renders immediately.
---
 crates/owlry/src/app.rs            |  3 ++
 crates/owlry/src/ui/main_window.rs | 49 +++++++++++++++++++++++++++++-
 2 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/crates/owlry/src/app.rs b/crates/owlry/src/app.rs
index 9244ade..3433e56 100644
--- a/crates/owlry/src/app.rs
+++ b/crates/owlry/src/app.rs
@@ -135,6 +135,9 @@ impl OwlryApp {
         Self::load_css(&config.borrow());
 
         window.present();
+
+        // Populate results AFTER present() so the window appears immediately
+        window.schedule_initial_results();
     }
 
     /// Create a local backend as fallback when daemon is unavailable.
diff --git a/crates/owlry/src/ui/main_window.rs b/crates/owlry/src/ui/main_window.rs
index 35dab67..b0bd759 100644
--- a/crates/owlry/src/ui/main_window.rs
+++ b/crates/owlry/src/ui/main_window.rs
@@ -224,7 +224,6 @@ impl MainWindow {
 
         main_window.setup_signals();
         main_window.setup_lazy_loading();
-        main_window.update_results("");
 
         // Ensure search entry has focus when window is shown
         main_window.search_entry.grab_focus();
@@ -1181,6 +1180,54 @@ impl MainWindow {
         entry.emit_by_name::<()>("changed", &[]);
     }
 
+    /// Schedule initial results population via idle callback.
+    /// Call this AFTER `window.present()` so the window appears immediately.
+    pub fn schedule_initial_results(&self) {
+        let backend = self.backend.clone();
+        let results_list = self.results_list.clone();
+        let config = self.config.clone();
+        let filter = self.filter.clone();
+        let current_results = self.current_results.clone();
+        let lazy_state = self.lazy_state.clone();
+
+        gtk4::glib::idle_add_local_once(move || {
+            let cfg = config.borrow();
+            let max_results = cfg.general.max_results;
+            drop(cfg);
+
+            let results = backend.borrow_mut().search(
+                "",
+                max_results,
+                &filter.borrow(),
+                &config.borrow(),
+            );
+
+            // Clear existing results
+            while let Some(child) = results_list.first_child() {
+                results_list.remove(&child);
+            }
+
+            let initial_count = INITIAL_RESULTS.min(results.len());
+            {
+                let mut lazy = lazy_state.borrow_mut();
+                lazy.all_results = results.clone();
+                lazy.displayed_count = initial_count;
+            }
+
+            for item in results.iter().take(initial_count) {
+                let row = ResultRow::new(item);
+                results_list.append(&row);
+            }
+
+            if let Some(first_row) = results_list.row_at_index(0) {
+                results_list.select_row(Some(&first_row));
+            }
+
+            *current_results.borrow_mut() =
+                results.into_iter().take(initial_count).collect();
+        });
+    }
+
     fn update_results(&self, query: &str) {
         let cfg = self.config.borrow();
         let max_results = cfg.general.max_results;