added features

src/main/java/com/kfmanager/config/AppConfig.java

@@ -213,6 +213,20 @@ public class AppConfig {
         setEditorFontStyle(font.getStyle());
     }
 
+    // --- External editor configuration ---
+    /** Path to external editor binary (empty = use internal editor) */
+    public String getExternalEditorPath() {
+        return properties.getProperty("editor.external.path", "");
+    }
+
+    public void setExternalEditorPath(String path) {
+        if (path == null || path.isEmpty()) {
+            properties.remove("editor.external.path");
+        } else {
+            properties.setProperty("editor.external.path", path);
+        }
+    }
+
     // --- Appearance (global) settings ---
     public String getGlobalFontName() {
         return properties.getProperty("global.font.name", "Monospaced");

src/main/java/com/kfmanager/ui/FilePanel.java

@@ -24,6 +24,12 @@ public class FilePanel extends JPanel {
         addNewTab(initialPath);
     }
 
+    /** Start inline rename on the currently selected tab/table. */
+    public void startInlineRename() {
+        FilePanelTab tab = getCurrentTab();
+        if (tab != null) tab.startInlineRename();
+    }
+
     private Runnable switchPanelCallback;
 
     public void setSwitchPanelCallback(Runnable cb) {

src/main/java/com/kfmanager/ui/FilePanelTab.java

@@ -52,6 +52,36 @@ public class FilePanelTab extends JPanel {
         loadDirectory(currentDirectory);
     }
 
+    /** Start inline rename for currently selected item (if single selection). */
+    public void startInlineRename() {
+        // Determine selected row/column according to view mode
+        int selRow = fileTable.getSelectedRow();
+        if (selRow < 0) return;
+
+        int editCol = 0;
+        if (viewMode == ViewMode.BRIEF) {
+            editCol = briefCurrentColumn;
+            // If briefCurrentColumn is out of range, pick column 0
+            if (editCol < 0 || editCol >= tableModel.getColumnCount()) editCol = 0;
+        } else {
+            editCol = 0; // name column in FULL
+        }
+
+        // Only allow editing if the cell represents a real item
+        if (!tableModel.isCellEditable(selRow, editCol)) return;
+
+        // Start editing and select all text in editor
+        boolean started = fileTable.editCellAt(selRow, editCol);
+        if (started) {
+            Component ed = fileTable.getEditorComponent();
+            if (ed instanceof JTextField) {
+                JTextField tf = (JTextField) ed;
+                tf.requestFocusInWindow();
+                tf.selectAll();
+            }
+        }
+    }
+
     /**
      * Ensure that column renderers are attached. Useful when the tab was just added to a container
      * and the ColumnModel may not yet be in its final state.
@@ -1438,6 +1468,53 @@ public class FilePanelTab extends JPanel {
                 default: return "";
             }
         }
+
+        @Override
+        public boolean isCellEditable(int rowIndex, int columnIndex) {
+            if (viewMode == ViewMode.BRIEF) {
+                FileItem it = getItemFromBriefLayout(rowIndex, columnIndex);
+                return it != null; // allow editing name in brief cells
+            }
+            // In FULL mode only the name column is editable
+            return columnIndex == 0;
+        }
+
+        @Override
+        public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
+            String newName = aValue != null ? aValue.toString().trim() : null;
+            if (newName == null || newName.isEmpty()) return;
+
+            FileItem item = null;
+            if (viewMode == ViewMode.BRIEF) {
+                item = getItemFromBriefLayout(rowIndex, columnIndex);
+            } else {
+                item = getItem(rowIndex);
+            }
+
+            if (item == null) return;
+
+            // Perform rename using FileOperations and refresh the directory
+            try {
+                com.kfmanager.service.FileOperations.rename(item.getFile(), newName);
+                // reload current directory to reflect updated names
+                FilePanelTab.this.loadDirectory(FilePanelTab.this.getCurrentDirectory());
+                // After reload, select the renamed item and focus the table
+                SwingUtilities.invokeLater(() -> {
+                    try {
+                        FilePanelTab.this.selectItem(newName);
+                        FilePanelTab.this.getFileTable().requestFocusInWindow();
+                    } catch (Exception ignore) {}
+                });
+            } catch (Exception ex) {
+                // show error to user
+                try {
+                    JOptionPane.showMessageDialog(FilePanelTab.this,
+                            "Rename failed: " + ex.getMessage(),
+                            "Error",
+                            JOptionPane.ERROR_MESSAGE);
+                } catch (Exception ignore) {}
+            }
+        }
         
         public FileItem getItem(int index) {
             if (index >= 0 && index < items.size()) {

src/main/java/com/kfmanager/ui/MainWindow.java

@@ -261,7 +261,7 @@ public class MainWindow extends JFrame {
     JButton btnDelete = new JButton("F8 Delete");
         btnDelete.addActionListener(e -> deleteFiles());
         
-    JButton btnRename = new JButton("F9 Rename");
+    JButton btnRename = new JButton("Shift+F6 Rename");
         btnRename.addActionListener(e -> renameFile());
         
     JButton btnExit = new JButton("F10 Exit");
@@ -432,11 +432,17 @@ public class MainWindow extends JFrame {
         rootPane.registerKeyboardAction(e -> deleteFiles(),
                 KeyStroke.getKeyStroke(KeyEvent.VK_F8, 0),
                 JComponent.WHEN_IN_FOCUSED_WINDOW);
+
+    // Delete key - global delete binding (also added per-table)
+    rootPane.registerKeyboardAction(e -> deleteFiles(),
+        KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0),
+        JComponent.WHEN_IN_FOCUSED_WINDOW);
+    // Shift+Delete - treat as delete as well
+    rootPane.registerKeyboardAction(e -> deleteFiles(),
+        KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, InputEvent.SHIFT_DOWN_MASK),
+        JComponent.WHEN_IN_FOCUSED_WINDOW);
         
-    // F9 - Rename
+    // No direct F9 keyboard binding: inline rename should only be triggered by Shift+F6
-        rootPane.registerKeyboardAction(e -> renameFile(),
-                KeyStroke.getKeyStroke(KeyEvent.VK_F9, 0),
-                JComponent.WHEN_IN_FOCUSED_WINDOW);
 
     // TAB - switch panel (global) - works even when additional tabs are opened
     rootPane.registerKeyboardAction(e -> switchPanels(),
@@ -567,6 +573,12 @@ public class MainWindow extends JFrame {
                 deleteFiles();
             }
         });
+        // Also map Delete key to deleteFiles on the table level so it works when table has focus
+        table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
+             .put(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0), "deleteFiles");
+       // Also map Shift+Delete on table level
+       table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
+           .put(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, InputEvent.SHIFT_DOWN_MASK), "deleteFiles");
     }
     
     /**
@@ -637,7 +649,10 @@ public class MainWindow extends JFrame {
             JOptionPane.INFORMATION_MESSAGE);
             return;
         }
-        
+        // remember current selection row so we can restore selection after deletion
+    JTable table = activePanel != null ? activePanel.getFileTable() : null;
+    final int rememberedRow = (table != null) ? table.getSelectedRow() : -1;
+
     StringBuilder message = new StringBuilder("Really delete the following items?\n\n");
         for (FileItem item : selectedItems) {
                 message.append(item.getName()).append("\n");
@@ -657,6 +672,22 @@ public class MainWindow extends JFrame {
             performFileOperation(() -> {
                 FileOperations.delete(selectedItems, null);
             }, "Mazání dokončeno", activePanel);
+
+            // After deletion and refresh, restore selection: stay on same row if possible,
+            // otherwise move selection one row up.
+            SwingUtilities.invokeLater(() -> {
+                try {
+                    JTable t = activePanel != null ? activePanel.getFileTable() : null;
+                    if (t == null) return;
+                    int rowCount = t.getRowCount();
+                    if (rowCount == 0) return;
+                    int targetRow = rememberedRow;
+                    if (targetRow < 0) targetRow = 0;
+                    if (targetRow >= rowCount) targetRow = rowCount - 1; // move up if needed
+                    t.setRowSelectionInterval(targetRow, targetRow);
+                    t.scrollRectToVisible(t.getCellRect(targetRow, 0, true));
+                } catch (Exception ignore) {}
+            });
         }
     }
     
@@ -664,24 +695,30 @@ public class MainWindow extends JFrame {
      * Rename selected file
      */
     private void renameFile() {
-        List<FileItem> selectedItems = activePanel.getSelectedItems();
+        // Start inline rename in the active panel (it will handle validation)
-        if (selectedItems.size() != 1) {
+        if (activePanel != null) {
-        JOptionPane.showMessageDialog(this,
+            try {
-            "Select one file to rename",
+                activePanel.startInlineRename();
-            "Rename",
+            } catch (Exception ex) {
-            JOptionPane.INFORMATION_MESSAGE);
+                // Fallback to dialog-based rename if inline fails for some reason
-            return;
+                List<FileItem> selectedItems = activePanel.getSelectedItems();
-        }
+                if (selectedItems.size() != 1) {
-        
+                    JOptionPane.showMessageDialog(this,
-        FileItem item = selectedItems.get(0);
+                            "Select one file to rename",
-    String newName = JOptionPane.showInputDialog(this,
+                            "Rename",
-        "New name:",
+                            JOptionPane.INFORMATION_MESSAGE);
-        item.getName());
+                    return;
-        
+                }
-        if (newName != null && !newName.trim().isEmpty() && !newName.equals(item.getName())) {
+                FileItem item = selectedItems.get(0);
-            performFileOperation(() -> {
+                String newName = JOptionPane.showInputDialog(this,
-                FileOperations.rename(item.getFile(), newName.trim());
+                        "New name:",
-            }, "Přejmenování dokončeno", activePanel);
+                        item.getName());
+                if (newName != null && !newName.trim().isEmpty() && !newName.equals(item.getName())) {
+                    performFileOperation(() -> {
+                        FileOperations.rename(item.getFile(), newName.trim());
+                    }, "Přejmenování dokončeno", activePanel);
+                }
+            }
         }
     }
     
@@ -792,8 +829,24 @@ public class MainWindow extends JFrame {
         
         File file = item.getFile();
         
-    // Removed previous 10 MB limit: allow opening large files in the editor. The editor may still choose hex/paged mode for large binaries.
+        // If an external editor is configured, try launching it with the file path
-        
+        String ext = config.getExternalEditorPath();
+        if (ext != null && !ext.trim().isEmpty()) {
+            try {
+                java.util.List<String> cmd = new java.util.ArrayList<>();
+                cmd.add(ext);
+                cmd.add(file.getAbsolutePath());
+                new ProcessBuilder(cmd).start();
+                return;
+            } catch (Exception ex) {
+                // Fall back to internal editor if external fails
+                JOptionPane.showMessageDialog(this,
+                        "Nelze spustit externí editor: " + ex.getMessage() + "\nPoužije se interní editor.",
+                        "Chyba", JOptionPane.ERROR_MESSAGE);
+            }
+        }
+
+        // Removed previous 10 MB limit: allow opening large files in the editor. The editor may still choose hex/paged mode for large binaries.
         FileEditor editor = new FileEditor(this, file, config, false);
         editor.setVisible(true);
     }

src/main/java/com/kfmanager/ui/SettingsDialog.java

@@ -4,6 +4,7 @@ import com.kfmanager.config.AppConfig;
 
 import javax.swing.*;
 import java.awt.*;
+import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -25,6 +26,7 @@ public class SettingsDialog extends JDialog {
 
     // Editor controls
     private JButton editorFontBtn;
+    private JTextField externalEditorField;
 
     private final Map<String, JPanel> panels = new HashMap<>();
 
@@ -146,7 +148,7 @@ public class SettingsDialog extends JDialog {
 
     private JPanel buildEditorPanel() {
         JPanel p = new JPanel(new BorderLayout(8, 8));
-        JPanel grid = new JPanel(new GridLayout(1, 2, 8, 8));
+        JPanel grid = new JPanel(new GridLayout(2, 2, 8, 8));
         grid.setBorder(BorderFactory.createEmptyBorder(12, 12, 12, 12));
 
         grid.add(new JLabel("Editor font:"));
@@ -160,6 +162,30 @@ public class SettingsDialog extends JDialog {
             }
         });
         grid.add(editorFontBtn);
+        // External editor path
+        grid.add(new JLabel("External editor:"));
+        JPanel extPanel = new JPanel(new BorderLayout(6, 0));
+        externalEditorField = new JTextField(config.getExternalEditorPath());
+        JButton browse = new JButton("Browse...");
+        browse.addActionListener(e -> {
+            JFileChooser fc = new JFileChooser();
+            fc.setFileSelectionMode(JFileChooser.FILES_ONLY);
+            fc.setDialogTitle("Select external editor executable");
+            if (!externalEditorField.getText().isEmpty()) {
+                File f = new File(externalEditorField.getText());
+                if (f.exists()) fc.setSelectedFile(f);
+            }
+            int r = fc.showOpenDialog(this);
+            if (r == JFileChooser.APPROVE_OPTION) {
+                File sel = fc.getSelectedFile();
+                externalEditorField.setText(sel.getAbsolutePath());
+                config.setExternalEditorPath(sel.getAbsolutePath());
+                // config.saveConfig() will be called when OK is pressed
+            }
+        });
+        extPanel.add(externalEditorField, BorderLayout.CENTER);
+        extPanel.add(browse, BorderLayout.EAST);
+        grid.add(extPanel);
 
         p.add(grid, BorderLayout.NORTH);
         panels.put("Editor", p);