From 318c67ffbee929422b294351e5886282d5d4757a Mon Sep 17 00:00:00 2001
From: Tw93 <tw93@qq.com>
Date: Thu, 15 Jan 2026 11:41:16 +0800
Subject: [PATCH] perf: optimize search filter rendering in paginated menu

- Use partial redraw for search input updates instead of full screen refresh
- Reduces flickering when typing in the filter box
- Improve responsiveness of search interaction
---
 lib/ui/menu_paginated.sh | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/lib/ui/menu_paginated.sh b/lib/ui/menu_paginated.sh
index cce6c96..2dc5cd0 100755
--- a/lib/ui/menu_paginated.sh
+++ b/lib/ui/menu_paginated.sh
@@ -864,7 +864,14 @@ paginated_multi_select() {
                 # Backspace filter
                 if [[ "$filter_mode" == "true" && -n "$filter_query" ]]; then
                     filter_query="${filter_query%?}"
-                    need_full_redraw=true
+                    # Fast footer-only update in filter mode (avoid full redraw)
+                    local filter_status="${filter_query:-_}"
+                    local footer_row=$((items_per_page + 4))
+                    printf "\033[%d;1H\033[2K" "$footer_row" >&2
+                    local sep=" ${GRAY}|${NC} "
+                    printf "%s" "${GRAY}Search: ${filter_status}${NC}${sep}${GRAY}Delete${NC}${sep}${GRAY}Enter Confirm${NC}${sep}${GRAY}ESC Cancel${NC}" >&2
+                    printf "\033[%d;1H\033[2K" "$((footer_row + 1))" >&2
+                    continue
                 fi
                 ;;
             CHAR:*)
@@ -873,7 +880,14 @@ paginated_multi_select() {
                     # avoid accidental leading spaces
                     if [[ -n "$filter_query" || "$ch" != " " ]]; then
                         filter_query+="$ch"
-                        need_full_redraw=true
+                        # Fast footer-only update in filter mode (avoid full redraw)
+                        local filter_status="${filter_query:-_}"
+                        local footer_row=$((items_per_page + 4))
+                        printf "\033[%d;1H\033[2K" "$footer_row" >&2
+                        local sep=" ${GRAY}|${NC} "
+                        printf "%s" "${GRAY}Search: ${filter_status}${NC}${sep}${GRAY}Delete${NC}${sep}${GRAY}Enter Confirm${NC}${sep}${GRAY}ESC Cancel${NC}" >&2
+                        printf "\033[%d;1H\033[2K" "$((footer_row + 1))" >&2
+                        continue
                     fi
                 fi
                 ;;