From b7b27d8ced0498e3cfa8f498027a7ede7d3bd9bb Mon Sep 17 00:00:00 2001
From: Radek Davidek <rdavidek@trask.cz>
Date: Thu, 22 Jan 2026 15:31:45 +0100
Subject: [PATCH] changes highlighting

---
 .../cz/kamma/kfmanager/ui/FilePanelTab.java   | 27 ++++++++++++-------
 1 file changed, 17 insertions(+), 10 deletions(-)

diff --git a/src/main/java/cz/kamma/kfmanager/ui/FilePanelTab.java b/src/main/java/cz/kamma/kfmanager/ui/FilePanelTab.java
index b7fd5e4..dc74cc1 100644
--- a/src/main/java/cz/kamma/kfmanager/ui/FilePanelTab.java
+++ b/src/main/java/cz/kamma/kfmanager/ui/FilePanelTab.java
@@ -69,6 +69,8 @@ public class FilePanelTab extends JPanel {
     private File currentArchiveSourceFile = null;
     private boolean inlineRenameActive = false;
     private boolean active = false;
+    private final Map<String, Long> changeTimestamps = new HashMap<>();
+    private static final long CHANGE_HIGHLIGHT_DURATION = 500; // 0.5 seconds per item
     
     public FilePanelTab(String initialPath) {
         this(initialPath, true);
@@ -1011,24 +1013,28 @@ public class FilePanelTab extends JPanel {
      */
     public void refresh(boolean requestFocus) {
         List<FileItem> newItems = createFileItemList(currentDirectory);
+        long now = System.currentTimeMillis();
+
+        // Clean up expired timestamps
+        changeTimestamps.entrySet().removeIf(entry -> now - entry.getValue() > CHANGE_HIGHLIGHT_DURATION);
+
         if (isSameContent(newItems, tableModel.items)) {
-            // Nothing changed since last refresh. If there were any "recently changed"
-            // highlights, clear them now as the files have stabilized.
-            boolean found = false;
+            // Nothing changed on disk since last refresh.
+            // Check if we need to clear highlight for items whose duration expired.
+            boolean repainNeeded = false;
             for (FileItem item : tableModel.items) {
-                if (item.isRecentlyChanged()) {
+                if (item.isRecentlyChanged() && !changeTimestamps.containsKey(item.getName())) {
                     item.setRecentlyChanged(false);
-                    found = true;
+                    repainNeeded = true;
                 }
             }
-            if (found) {
+            if (repainNeeded) {
                 fileTable.repaint();
             }
             return;
         }
 
         // Identify which items are new or have changed metadata (size/date)
-        final List<String> changedNames = new ArrayList<>();
         Map<String, FileItem> oldItemsMap = new HashMap<>();
         for (FileItem item : tableModel.items) {
             oldItemsMap.put(item.getName(), item);
@@ -1037,7 +1043,8 @@ public class FilePanelTab extends JPanel {
         for (FileItem newItem : newItems) {
             FileItem oldItem = oldItemsMap.get(newItem.getName());
             if (oldItem == null || !newItem.isSameAs(oldItem)) {
-                changedNames.add(newItem.getName());
+                // This is a new or modified item
+                changeTimestamps.put(newItem.getName(), now);
             }
         }
 
@@ -1052,12 +1059,12 @@ public class FilePanelTab extends JPanel {
         }
 
         loadDirectory(currentDirectory, false, requestFocus, () -> {
-            // Restore marks and set recentlyChanged flag
+            // Restore marks and set recentlyChanged flag based on active timestamps
             for (FileItem item : tableModel.items) {
                 if (markedNames.contains(item.getName())) {
                     item.setMarked(true);
                 }
-                if (changedNames.contains(item.getName())) {
+                if (changeTimestamps.containsKey(item.getName())) {
                     item.setRecentlyChanged(true);
                 }
             }