fix: performance regression when switching tabs (#4918)

* remove pane render report

* only collect pane contents if pane should render

* add logs

* conditional keybinding serialization

* remove logs

* rustfmt

* fix tests

* tests

* rustfmt

1 files changed, 24 insertions, 2 deletions

diff --git a/default-plugins/compact-bar/src/main.rs b/default-plugins/compact-bar/src/main.rs
index 074e5181..3a8446a5 100644
--- a/default-plugins/compact-bar/src/main.rs
+++ b/default-plugins/compact-bar/src/main.rs
@@ -60,6 +60,9 @@ struct State {
     is_first_run: bool,
     own_tab_index: Option<usize>,
     own_client_id: u16,
+
+    // Keybinding cache
+    cached_keybinds: KeybindsVec,
 }
 
 struct TabRenderData {
@@ -85,7 +88,21 @@ impl ZellijPlugin for State {
         self.is_first_run = false;
 
         match event {
-            Event::ModeUpdate(mode_info) => self.handle_mode_update(mode_info),
+            Event::InitialKeybinds(keybinds) => {
+                self.cached_keybinds = keybinds;
+                if !self.cached_keybinds.is_empty() {
+                    self.mode_info.keybinds = self.cached_keybinds.clone();
+                }
+                true
+            },
+            Event::ModeUpdate(mut mode_info) => {
+                if mode_info.keybinds.is_empty() && !self.cached_keybinds.is_empty() {
+                    mode_info.keybinds = self.cached_keybinds.clone();
+                } else if !mode_info.keybinds.is_empty() {
+                    self.cached_keybinds = mode_info.keybinds.clone();
+                }
+                self.handle_mode_update(mode_info)
+            },
             Event::TabUpdate(tabs) => self.handle_tab_update(tabs),
             Event::PaneUpdate(pane_manifest) => self.handle_pane_update(pane_manifest),
             Event::Mouse(mouse_event) => {
@@ -146,7 +163,11 @@ impl State {
         set_selectable(false);
 
         let events = if self.is_tooltip {
-            vec![EventType::ModeUpdate, EventType::TabUpdate]
+            vec![
+                EventType::ModeUpdate,
+                EventType::TabUpdate,
+                EventType::InitialKeybinds,
+            ]
         } else {
             vec![
                 EventType::TabUpdate,
@@ -156,6 +177,7 @@ impl State {
                 EventType::CopyToClipboard,
                 EventType::InputReceived,
                 EventType::SystemClipboardFailure,
+                EventType::InitialKeybinds,
             ]
         };