clipboard implemented

src/main/java/cz/kamma/kfmanager/service/ClipboardService.java

@@ -0,0 +1,130 @@
+package cz.kamma.kfmanager.service;
+
+import java.awt.Toolkit;
+import java.awt.datatransfer.*;
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ClipboardService {
+
+    public enum ClipboardAction {
+        COPY, CUT
+    }
+
+    public static void copyToClipboard(List<File> files, ClipboardAction action) {
+        if (files == null || files.isEmpty()) return;
+
+        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+        FileTransferable transferable = new FileTransferable(files, action);
+        clipboard.setContents(transferable, null);
+    }
+
+    @SuppressWarnings("unchecked")
+    public static List<File> getFilesFromClipboard() {
+        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+        if (clipboard.isDataFlavorAvailable(DataFlavor.javaFileListFlavor)) {
+            try {
+                return (List<File>) clipboard.getData(DataFlavor.javaFileListFlavor);
+            } catch (UnsupportedFlavorException | IOException e) {
+                e.printStackTrace();
+            }
+        }
+        return new ArrayList<>();
+    }
+
+    public static ClipboardAction getClipboardAction() {
+        Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+        
+        // Check for GNOME/KDE flavored cut/copy
+        try {
+            for (DataFlavor flavor : clipboard.getAvailableDataFlavors()) {
+                if ("x-special/gnome-copied-files".equals(flavor.getSubType())) {
+                    String data = (String) clipboard.getData(flavor);
+                    if (data != null && data.startsWith("cut")) {
+                        return ClipboardAction.CUT;
+                    }
+                    return ClipboardAction.COPY;
+                }
+            }
+        } catch (Exception ignore) {}
+
+        // Check for Windows "Preferred DropEffect"
+        try {
+            for (DataFlavor flavor : clipboard.getAvailableDataFlavors()) {
+                if ("application/x-java-remote-object".equals(flavor.getPrimaryType()) &&
+                    Integer.class.isAssignableFrom(flavor.getRepresentationClass()) &&
+                    "Preferred DropEffect".equals(flavor.getHumanPresentableName())) {
+                    Integer effect = (Integer) clipboard.getData(flavor);
+                    if (effect != null && (effect & 2) != 0) { // 2 = MOVE
+                        return ClipboardAction.CUT;
+                    }
+                }
+            }
+        } catch (Exception ignore) {}
+
+        // Internal fallback (if we set it ourselves)
+        if (clipboard.isDataFlavorAvailable(FileTransferable.ACTION_FLAVOR)) {
+            try {
+                return (ClipboardAction) clipboard.getData(FileTransferable.ACTION_FLAVOR);
+            } catch (UnsupportedFlavorException | IOException e) {
+                e.printStackTrace();
+            }
+        }
+
+        return ClipboardAction.COPY;
+    }
+
+    private static class FileTransferable implements Transferable {
+        public static final DataFlavor ACTION_FLAVOR = new DataFlavor(ClipboardAction.class, "Clipboard Action");
+        private final List<File> files;
+        private final ClipboardAction action;
+
+        public FileTransferable(List<File> files, ClipboardAction action) {
+            this.files = files;
+            this.action = action;
+        }
+
+        @Override
+        public DataFlavor[] getTransferDataFlavors() {
+            try {
+                return new DataFlavor[]{
+                    DataFlavor.javaFileListFlavor,
+                    ACTION_FLAVOR,
+                    new DataFlavor("x-special/gnome-copied-files;class=java.lang.String")
+                };
+            } catch (ClassNotFoundException e) {
+                return new DataFlavor[]{
+                    DataFlavor.javaFileListFlavor,
+                    ACTION_FLAVOR
+                };
+            }
+        }
+
+        @Override
+        public boolean isDataFlavorSupported(DataFlavor flavor) {
+            for (DataFlavor f : getTransferDataFlavors()) {
+                if (f.equals(flavor)) return true;
+            }
+            return false;
+        }
+
+        @Override
+        public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
+            if (DataFlavor.javaFileListFlavor.equals(flavor)) {
+                return files;
+            } else if (ACTION_FLAVOR.equals(flavor)) {
+                return action;
+            } else if ("x-special".equals(flavor.getPrimaryType()) && "gnome-copied-files".equals(flavor.getSubType())) {
+                StringBuilder sb = new StringBuilder();
+                sb.append(action == ClipboardAction.CUT ? "cut" : "copy");
+                for (File f : files) {
+                    sb.append("\n").append(f.toURI().toString());
+                }
+                return sb.toString();
+            }
+            throw new UnsupportedFlavorException(flavor);
+        }
+    }
+}

src/main/java/cz/kamma/kfmanager/service/FileOperations.java

@@ -31,6 +31,11 @@ public class FileOperations {
             File source = item.getFile();
             File target = new File(targetDirectory, source.getName());
 
+            // If target is the same as source (copying to the same directory), rename target
+            if (source.getAbsolutePath().equals(target.getAbsolutePath())) {
+                target = new File(targetDirectory, "copy-of-" + source.getName());
+            }
+            
             if (source.isDirectory()) {
                 copyDirectory(source.toPath(), target.toPath(), totalSize, currentCopied, callback);
             } else {

src/main/java/cz/kamma/kfmanager/ui/FilePanelTab.java

@@ -1,11 +1,15 @@
 package cz.kamma.kfmanager.ui;
 
 import cz.kamma.kfmanager.model.FileItem;
+import cz.kamma.kfmanager.service.ClipboardService;
+import cz.kamma.kfmanager.service.FileOperations;
 
 import javax.swing.*;
 import javax.swing.table.AbstractTableModel;
 import javax.swing.table.DefaultTableCellRenderer;
 import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;
 import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.StringSelection;
 import java.awt.datatransfer.Transferable;
@@ -836,15 +840,20 @@ public class FilePanelTab extends JPanel {
                 fileTable.revalidate();
                 fileTable.repaint();
                 
-                if (selectFirst && fileTable.getRowCount() > 0) {
+                if (selectFirst && tableModel.items.size() > 0) {
-                    fileTable.setRowSelectionInterval(0, 0);
+                    int startIndex = 0;
-                    fileTable.scrollRectToVisible(fileTable.getCellRect(0, 0, true));
+                    int selRow = startIndex % tableModel.briefRowsPerColumn;
+                    int selCol = startIndex / tableModel.briefRowsPerColumn;
+                    briefCurrentColumn = selCol;
+                    fileTable.setRowSelectionInterval(selRow, selRow);
+                    fileTable.scrollRectToVisible(fileTable.getCellRect(selRow, selCol, true));
                 }
                 fileTable.requestFocusInWindow();
             });
         } else {
             if (autoSelectFirst && fileTable.getRowCount() > 0) {
-                fileTable.setRowSelectionInterval(0, 0);
+                int startIndex = 0;
+                fileTable.setRowSelectionInterval(startIndex, startIndex);
                 SwingUtilities.invokeLater(() -> {
                     try { fileTable.requestFocusInWindow(); } catch (Exception ignore) {}
                 });
@@ -1256,6 +1265,28 @@ public class FilePanelTab extends JPanel {
         });
         menu.add(copyPath);
 
+        menu.addSeparator();
+
+        // Cut
+        JMenuItem cutItem = new JMenuItem("Cut");
+        cutItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, ActionEvent.CTRL_MASK));
+        cutItem.addActionListener(ae -> copyToClipboard(true));
+        menu.add(cutItem);
+
+        // Copy
+        JMenuItem copyItem = new JMenuItem("Copy");
+        copyItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, ActionEvent.CTRL_MASK));
+        copyItem.addActionListener(ae -> copyToClipboard(false));
+        menu.add(copyItem);
+
+        // Paste
+        JMenuItem pasteItem = new JMenuItem("Paste");
+        pasteItem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, ActionEvent.CTRL_MASK));
+        pasteItem.addActionListener(ae -> pasteFromClipboard());
+        menu.add(pasteItem);
+
+        menu.addSeparator();
+
         // Associate with...
         JMenuItem associateItem = new JMenuItem("Associate with...");
         associateItem.addActionListener(ae -> {
@@ -1275,6 +1306,7 @@ public class FilePanelTab extends JPanel {
             if (res == JOptionPane.YES_OPTION) {
                 java.util.List<FileItem> toDelete = new java.util.ArrayList<>();
                 toDelete.add(item);
+                final int rememberedIndex = getFocusedItemIndex();
                 Window parentWindow = SwingUtilities.getWindowAncestor(FilePanelTab.this);
                 ProgressDialog progressDialog = new ProgressDialog(parentWindow instanceof Frame ? (Frame)parentWindow : null, "Deleting");
                 
@@ -1292,7 +1324,11 @@ public class FilePanelTab extends JPanel {
                         });
                         SwingUtilities.invokeLater(() -> {
                             progressDialog.dispose();
-                            loadDirectory(getCurrentDirectory());
+                            loadDirectory(getCurrentDirectory(), false);
+                            // Use another invokeLater to ensure BRIEF mode layout is updated
+                            SwingUtilities.invokeLater(() -> {
+                                selectItemByIndex(rememberedIndex - 1);
+                            });
                         });
                     } catch (Exception ex) {
                         SwingUtilities.invokeLater(() -> {
@@ -1473,6 +1509,118 @@ public class FilePanelTab extends JPanel {
         return null;
     }
 
+    public int getFocusedItemIndex() {
+        int row = fileTable.getSelectedRow();
+        if (row < 0) return -1;
+        if (viewMode == ViewMode.BRIEF) {
+            return briefCurrentColumn * tableModel.briefRowsPerColumn + row;
+        } else {
+            return row;
+        }
+    }
+
+    public void selectItemByIndex(int index) {
+        if (index < 0) index = 0;
+        if (index >= tableModel.items.size()) index = tableModel.items.size() - 1;
+        if (index < 0) return;
+
+        if (viewMode == ViewMode.BRIEF) {
+            briefCurrentColumn = index / tableModel.briefRowsPerColumn;
+            int row = index % tableModel.briefRowsPerColumn;
+            if (briefCurrentColumn < fileTable.getColumnCount()) {
+                fileTable.setRowSelectionInterval(row, row);
+                fileTable.scrollRectToVisible(fileTable.getCellRect(row, briefCurrentColumn, true));
+            }
+        } else {
+            fileTable.setRowSelectionInterval(index, index);
+            fileTable.scrollRectToVisible(fileTable.getCellRect(index, 0, true));
+        }
+        fileTable.repaint();
+        fileTable.requestFocusInWindow();
+        updateStatus();
+    }
+
+    public void copyToClipboard(boolean cut) {
+        List<FileItem> selected = getSelectedItems();
+        if (selected.isEmpty()) return;
+
+        List<File> files = new ArrayList<>();
+        for (FileItem item : selected) {
+            files.add(item.getFile());
+        }
+
+        ClipboardService.copyToClipboard(files,
+            cut ? ClipboardService.ClipboardAction.CUT : ClipboardService.ClipboardAction.COPY);
+    }
+
+    public void pasteFromClipboard() {
+        List<File> files = ClipboardService.getFilesFromClipboard();
+        if (files == null || files.isEmpty()) return;
+
+        ClipboardService.ClipboardAction action = ClipboardService.getClipboardAction();
+
+        List<FileItem> itemsToPaste = new ArrayList<>();
+        for (File f : files) {
+            itemsToPaste.add(new FileItem(f));
+        }
+
+        File targetDir = getCurrentDirectory();
+        Window parentWindow = SwingUtilities.getWindowAncestor(this);
+        String operationName = action == ClipboardService.ClipboardAction.CUT ? "Moving" : "Copying";
+        ProgressDialog progressDialog = new ProgressDialog(parentWindow instanceof Frame ? (Frame)parentWindow : null, operationName);
+
+        new Thread(() -> {
+            try {
+                if (action == ClipboardService.ClipboardAction.CUT) {
+                    FileOperations.move(itemsToPaste, targetDir, new FileOperations.ProgressCallback() {
+                        @Override
+                        public void onProgress(long current, long total, String currentFile) {
+                            progressDialog.updateProgress(current, total, currentFile);
+                        }
+                        @Override
+                        public boolean isCancelled() {
+                            return progressDialog.isCancelled();
+                        }
+                    });
+                } else {
+                    FileOperations.copy(itemsToPaste, targetDir, new FileOperations.ProgressCallback() {
+                        @Override
+                        public void onProgress(long current, long total, String currentFile) {
+                            progressDialog.updateProgress(current, total, currentFile);
+                        }
+                        @Override
+                        public boolean isCancelled() {
+                            return progressDialog.isCancelled();
+                        }
+                    });
+                }
+                SwingUtilities.invokeLater(() -> {
+                    progressDialog.dispose();
+                    loadDirectory(targetDir, false);
+                    if (!itemsToPaste.isEmpty()) {
+                        String nameToSelect = itemsToPaste.get(0).getName();
+                        File firstSource = itemsToPaste.get(0).getFile();
+                        // Check if we were copying within the same directory - if so, it was renamed to copy-of-...
+                        if (action == ClipboardService.ClipboardAction.COPY && 
+                            firstSource.getParentFile() != null && 
+                            firstSource.getParentFile().getAbsolutePath().equals(targetDir.getAbsolutePath())) {
+                            nameToSelect = "copy-of-" + nameToSelect;
+                        }
+                        final String finalName = nameToSelect;
+                        // Use invokeLater to ensure layout (especially BRIEF mode) is updated before selection
+                        SwingUtilities.invokeLater(() -> selectItem(finalName));
+                    }
+                });
+            } catch (Exception ex) {
+                SwingUtilities.invokeLater(() -> {
+                    progressDialog.dispose();
+                    JOptionPane.showMessageDialog(this, "Paste failed: " + ex.getMessage());
+                });
+            }
+        }).start();
+        progressDialog.setVisible(true);
+    }
+
     /**
      * Mark/Select the very last item in the list
      */

src/main/java/cz/kamma/kfmanager/ui/MainWindow.java

@@ -858,6 +858,38 @@ public class MainWindow extends JFrame {
                 KeyStroke.getKeyStroke(KeyEvent.VK_W, InputEvent.CTRL_DOWN_MASK),
                 JComponent.WHEN_IN_FOCUSED_WINDOW);
 
+    // Ctrl+` - Home directory
+        rootPane.registerKeyboardAction(e -> {
+            if (activePanel != null && activePanel.getCurrentTab() != null) {
+                activePanel.getCurrentTab().loadDirectory(new File(System.getProperty("user.home")));
+            }
+        }, KeyStroke.getKeyStroke(KeyEvent.VK_BACK_QUOTE, InputEvent.CTRL_DOWN_MASK),
+        JComponent.WHEN_IN_FOCUSED_WINDOW);
+
+    // Ctrl+C - Copy to clipboard
+        rootPane.registerKeyboardAction(e -> {
+            if (activePanel != null && activePanel.getCurrentTab() != null) {
+                activePanel.getCurrentTab().copyToClipboard(false);
+            }
+        }, KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_DOWN_MASK),
+        JComponent.WHEN_IN_FOCUSED_WINDOW);
+
+    // Ctrl+X - Cut to clipboard
+        rootPane.registerKeyboardAction(e -> {
+            if (activePanel != null && activePanel.getCurrentTab() != null) {
+                activePanel.getCurrentTab().copyToClipboard(true);
+            }
+        }, KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_DOWN_MASK),
+        JComponent.WHEN_IN_FOCUSED_WINDOW);
+
+    // Ctrl+V - Paste from clipboard
+        rootPane.registerKeyboardAction(e -> {
+            if (activePanel != null && activePanel.getCurrentTab() != null) {
+                activePanel.getCurrentTab().pasteFromClipboard();
+            }
+        }, KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_DOWN_MASK),
+        JComponent.WHEN_IN_FOCUSED_WINDOW);
+
     // Ctrl+E - Command line history
         rootPane.registerKeyboardAction(e -> showCommandLineHistory(),
                 KeyStroke.getKeyStroke(KeyEvent.VK_E, InputEvent.CTRL_DOWN_MASK),
@@ -981,6 +1013,40 @@ public class MainWindow extends JFrame {
        // 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");
+
+        // Clipboard support (Ctrl+C, Ctrl+X, Ctrl+V)
+        table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
+             .put(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_DOWN_MASK), "clipboardCopy");
+        table.getActionMap().put("clipboardCopy", new AbstractAction() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (activePanel != null && activePanel.getCurrentTab() != null) {
+                    activePanel.getCurrentTab().copyToClipboard(false);
+                }
+            }
+        });
+
+        table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
+             .put(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_DOWN_MASK), "clipboardCut");
+        table.getActionMap().put("clipboardCut", new AbstractAction() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (activePanel != null && activePanel.getCurrentTab() != null) {
+                    activePanel.getCurrentTab().copyToClipboard(true);
+                }
+            }
+        });
+
+        table.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT)
+             .put(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_DOWN_MASK), "clipboardPaste");
+        table.getActionMap().put("clipboardPaste", new AbstractAction() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if (activePanel != null && activePanel.getCurrentTab() != null) {
+                    activePanel.getCurrentTab().pasteFromClipboard();
+                }
+            }
+        });
     }
 
     /**
@@ -1011,8 +1077,9 @@ public class MainWindow extends JFrame {
             @Override
             public void keyTyped(KeyEvent e) {
                 char c = e.getKeyChar();
-                // Printable characters only (exclude control keys like Enter, Backspace, Esc, Tab)
+                // Transfer to command line only for printable characters and when no modifiers like Ctrl or Alt are pressed.
-                if (c != KeyEvent.CHAR_UNDEFINED && c != '\b' && c != '\n' && c != '\t' && c != 27) {
+                // This prevents focus jump on shortcuts like Ctrl+C, Ctrl+V, etc.
+                if (c != KeyEvent.CHAR_UNDEFINED && c >= 32 && c != 127 && !e.isControlDown() && !e.isAltDown()) {
                     commandLine.requestFocusInWindow();
                     String current = commandLine.getEditor().getItem().toString();
                     commandLine.getEditor().setItem(current + c);
@@ -1118,9 +1185,9 @@ public class MainWindow extends JFrame {
             JOptionPane.INFORMATION_MESSAGE);
             return;
         }
-        // remember current selection row so we can restore selection after deletion
+        // remember current selection index so we can restore selection after deletion
-    JTable table = activePanel != null ? activePanel.getFileTable() : null;
+        final int rememberedIndex = (activePanel != null && activePanel.getCurrentTab() != null) ? 
-    final int rememberedRow = (table != null) ? table.getSelectedRow() : -1;
+            activePanel.getCurrentTab().getFocusedItemIndex() : -1;
 
     StringBuilder message = new StringBuilder("Really delete the following items?\n\n");
         for (FileItem item : selectedItems) {
@@ -1142,20 +1209,15 @@ public class MainWindow extends JFrame {
                 FileOperations.delete(selectedItems, callback);
             }, "Delete completed", false, activePanel);
 
-            // After deletion and refresh, restore selection: stay on same row if possible,
+            // After deletion and refresh, restore selection: move focus to the nearest higher item.
-            // otherwise move selection one row up.
             SwingUtilities.invokeLater(() -> {
                 try {
-                    JTable t = activePanel != null ? activePanel.getFileTable() : null;
+                    if (activePanel != null && activePanel.getCurrentTab() != null) {
-                    if (t == null) return;
+                        // Use another invokeLater to ensure BRIEF mode layout is updated
-                    int rowCount = t.getRowCount();
+                        SwingUtilities.invokeLater(() -> {
-                    if (rowCount == 0) return;
+                            activePanel.getCurrentTab().selectItemByIndex(rememberedIndex - 1);
-                    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));
-                    t.requestFocusInWindow();
                 } catch (Exception ignore) {}
             });
         } else {