From 7b8d86f45a2cfa57374579a3a3552268ec6edae4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lukas=20Br=C3=BCbach?= <Bruebach.Lukas@bdosecurity.de>
Date: Fri, 9 Oct 2026 12:42:44 +0200
Subject: [PATCH] [UI] Keep focus in chat on Tab completion acceptance

---
 .../widgets/utility/line_edit_completer.cpp   | 24 +++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp b/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp
index 7cb023848..95e335963 100644
--- a/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp
+++ b/cockatrice/src/interface/widgets/utility/line_edit_completer.cpp
@@ -88,8 +88,7 @@ void LineEditCompleter::keyPressEvent(QKeyEvent *event)
         return;
     }
 
-    if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter || event->key() == Qt::Key_Space ||
-        event->key() == Qt::Key_Tab) {
+    if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter || event->key() == Qt::Key_Space) {
         for (auto &info : completers) {
             if (info.completer->popup()->isVisible()) {
                 event->ignore();
@@ -109,6 +108,27 @@ void LineEditCompleter::keyPressEvent(QKeyEvent *event)
         }
     }
 
+    if (event->key() == Qt::Key_Tab) {
+        for (auto &info : completers) {
+            if (info.completer->popup()->isVisible()) {
+                event->ignore();
+                const QModelIndex currentIndex = info.completer->popup()->currentIndex();
+                QString completionText;
+                if (currentIndex.isValid()) {
+                    completionText = currentIndex.data().toString();
+                } else {
+                    completionText = info.completer->currentCompletion();
+                }
+                if (!completionText.isEmpty()) {
+                    insertCompletion(info.completer, completionText);
+                }
+                hideCompleterPopups();
+                setFocus();
+                return;
+            }
+        }
+    }
+
     LineEditUnfocusable::keyPressEvent(event);
 
     QString textValue = text();