Java tutorial
/* * Copyright (c) 1998, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.plaf.basic; import javax.swing.*; import javax.swing.filechooser.*; import javax.swing.filechooser.FileFilter; import javax.swing.event.*; import javax.swing.plaf.*; import java.awt.*; import java.awt.event.*; import java.awt.datatransfer.*; import java.beans.*; import java.io.*; import java.util.*; import java.util.List; import java.util.regex.*; import sun.awt.shell.ShellFolder; import sun.swing.*; import sun.swing.SwingUtilities2; /** * Basic L&F implementation of a FileChooser. * * @author Jeff Dinkins */ public class BasicFileChooserUI extends FileChooserUI { /* FileView icons */ /** Directory icon */ protected Icon directoryIcon = null; /** File icon */ protected Icon fileIcon = null; /** Computer icon */ protected Icon computerIcon = null; /** Hard drive icon */ protected Icon hardDriveIcon = null; /** Floppy drive icon */ protected Icon floppyDriveIcon = null; /** New folder icon */ protected Icon newFolderIcon = null; /** Up folder icon */ protected Icon upFolderIcon = null; /** Home folder icon */ protected Icon homeFolderIcon = null; /** List view icon */ protected Icon listViewIcon = null; /** Details view icon */ protected Icon detailsViewIcon = null; /** View menu icon */ protected Icon viewMenuIcon = null; /** Save button mnemonic */ protected int saveButtonMnemonic = 0; /** Open button mnemonic */ protected int openButtonMnemonic = 0; /** Cancel button mnemonic */ protected int cancelButtonMnemonic = 0; /** Update button mnemonic */ protected int updateButtonMnemonic = 0; /** Help button mnemonic */ protected int helpButtonMnemonic = 0; /** * The mnemonic keycode used for the approve button when a directory * is selected and the current selection mode is FILES_ONLY. * * @since 1.4 */ protected int directoryOpenButtonMnemonic = 0; /** Save button text */ protected String saveButtonText = null; /** Open button text */ protected String openButtonText = null; /** Cancel button text */ protected String cancelButtonText = null; /** Update button text */ protected String updateButtonText = null; /** Help button text */ protected String helpButtonText = null; /** * The label text displayed on the approve button when a directory * is selected and the current selection mode is FILES_ONLY. * * @since 1.4 */ protected String directoryOpenButtonText = null; /** Open dialog title text */ private String openDialogTitleText = null; /** Save dialog title text */ private String saveDialogTitleText = null; /** Save button tool tip text */ protected String saveButtonToolTipText = null; /** Open button tool tip text */ protected String openButtonToolTipText = null; /** Cancel button tool tip text */ protected String cancelButtonToolTipText = null; /** Update button tool tip text */ protected String updateButtonToolTipText = null; /** Help button tool tip text */ protected String helpButtonToolTipText = null; /** * The tooltip text displayed on the approve button when a directory * is selected and the current selection mode is FILES_ONLY. * * @since 1.4 */ protected String directoryOpenButtonToolTipText = null; // Some generic FileChooser functions private Action approveSelectionAction = new ApproveSelectionAction(); private Action cancelSelectionAction = new CancelSelectionAction(); private Action updateAction = new UpdateAction(); private Action newFolderAction; private Action goHomeAction = new GoHomeAction(); private Action changeToParentDirectoryAction = new ChangeToParentDirectoryAction(); private String newFolderErrorSeparator = null; private String newFolderErrorText = null; private String newFolderParentDoesntExistTitleText = null; private String newFolderParentDoesntExistText = null; private String fileDescriptionText = null; private String directoryDescriptionText = null; private JFileChooser filechooser = null; private boolean directorySelected = false; private File directory = null; private PropertyChangeListener propertyChangeListener = null; private AcceptAllFileFilter acceptAllFileFilter = new AcceptAllFileFilter(); private FileFilter actualFileFilter = null; private GlobFilter globFilter = null; private BasicDirectoryModel model = null; private BasicFileView fileView = new BasicFileView(); private boolean usesSingleFilePane; private boolean readOnly; // The accessoryPanel is a container to place the JFileChooser accessory component private JPanel accessoryPanel = null; private Handler handler; /** * Creates a {@code BasicFileChooserUI} implementation * for the specified component. By default * the {@code BasicLookAndFeel} class uses * {@code createUI} methods of all basic UIs classes * to instantiate UIs. * * @param c the {@code JFileChooser} which needs a UI * @return the {@code BasicFileChooserUI} object * * @see UIDefaults#getUI(JComponent) * @since 1.7 */ public static ComponentUI createUI(JComponent c) { return new BasicFileChooserUI((JFileChooser) c); } /** * Constructs a {@code BasicFileChooserUI}. * @param b file chooser */ public BasicFileChooserUI(JFileChooser b) { } /** * Installs the UI. * @param c the component */ public void installUI(JComponent c) { accessoryPanel = new JPanel(new BorderLayout()); filechooser = (JFileChooser) c; createModel(); clearIconCache(); installDefaults(filechooser); installComponents(filechooser); installListeners(filechooser); filechooser.applyComponentOrientation(filechooser.getComponentOrientation()); } /** * Uninstalls the UI. * @param c the component */ public void uninstallUI(JComponent c) { uninstallListeners(filechooser); uninstallComponents(filechooser); uninstallDefaults(filechooser); if (accessoryPanel != null) { accessoryPanel.removeAll(); } accessoryPanel = null; getFileChooser().removeAll(); handler = null; } /** * Installs the components. * @param fc the file chooser */ public void installComponents(JFileChooser fc) { } /** * Uninstalls the components. * @param fc the file chooser */ public void uninstallComponents(JFileChooser fc) { } /** * Installs the listeners. * @param fc the file chooser */ protected void installListeners(JFileChooser fc) { propertyChangeListener = createPropertyChangeListener(fc); if (propertyChangeListener != null) { fc.addPropertyChangeListener(propertyChangeListener); } fc.addPropertyChangeListener(getModel()); InputMap inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); SwingUtilities.replaceUIInputMap(fc, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, inputMap); ActionMap actionMap = getActionMap(); SwingUtilities.replaceUIActionMap(fc, actionMap); } InputMap getInputMap(int condition) { if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) { return (InputMap) DefaultLookup.get(getFileChooser(), this, "FileChooser.ancestorInputMap"); } return null; } ActionMap getActionMap() { return createActionMap(); } ActionMap createActionMap() { ActionMap map = new ActionMapUIResource(); Action refreshAction = new UIAction(FilePane.ACTION_REFRESH) { public void actionPerformed(ActionEvent evt) { getFileChooser().rescanCurrentDirectory(); } }; map.put(FilePane.ACTION_APPROVE_SELECTION, getApproveSelectionAction()); map.put(FilePane.ACTION_CANCEL, getCancelSelectionAction()); map.put(FilePane.ACTION_REFRESH, refreshAction); map.put(FilePane.ACTION_CHANGE_TO_PARENT_DIRECTORY, getChangeToParentDirectoryAction()); return map; } /** * Uninstalls the listeners. * @param fc the file chooser */ protected void uninstallListeners(JFileChooser fc) { if (propertyChangeListener != null) { fc.removePropertyChangeListener(propertyChangeListener); } fc.removePropertyChangeListener(getModel()); SwingUtilities.replaceUIInputMap(fc, JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null); SwingUtilities.replaceUIActionMap(fc, null); } /** * Installs the defaults. * @param fc the file chooser */ protected void installDefaults(JFileChooser fc) { installIcons(fc); installStrings(fc); usesSingleFilePane = UIManager.getBoolean("FileChooser.usesSingleFilePane"); readOnly = UIManager.getBoolean("FileChooser.readOnly"); TransferHandler th = fc.getTransferHandler(); if (th == null || th instanceof UIResource) { fc.setTransferHandler(defaultTransferHandler); } LookAndFeel.installProperty(fc, "opaque", Boolean.FALSE); } /** * Installs the icons. * @param fc the file chooser */ protected void installIcons(JFileChooser fc) { directoryIcon = UIManager.getIcon("FileView.directoryIcon"); fileIcon = UIManager.getIcon("FileView.fileIcon"); computerIcon = UIManager.getIcon("FileView.computerIcon"); hardDriveIcon = UIManager.getIcon("FileView.hardDriveIcon"); floppyDriveIcon = UIManager.getIcon("FileView.floppyDriveIcon"); newFolderIcon = UIManager.getIcon("FileChooser.newFolderIcon"); upFolderIcon = UIManager.getIcon("FileChooser.upFolderIcon"); homeFolderIcon = UIManager.getIcon("FileChooser.homeFolderIcon"); detailsViewIcon = UIManager.getIcon("FileChooser.detailsViewIcon"); listViewIcon = UIManager.getIcon("FileChooser.listViewIcon"); viewMenuIcon = UIManager.getIcon("FileChooser.viewMenuIcon"); } /** * Installs the strings. * @param fc the file chooser */ protected void installStrings(JFileChooser fc) { Locale l = fc.getLocale(); newFolderErrorText = UIManager.getString("FileChooser.newFolderErrorText", l); newFolderErrorSeparator = UIManager.getString("FileChooser.newFolderErrorSeparator", l); newFolderParentDoesntExistTitleText = UIManager.getString("FileChooser.newFolderParentDoesntExistTitleText", l); newFolderParentDoesntExistText = UIManager.getString("FileChooser.newFolderParentDoesntExistText", l); fileDescriptionText = UIManager.getString("FileChooser.fileDescriptionText", l); directoryDescriptionText = UIManager.getString("FileChooser.directoryDescriptionText", l); saveButtonText = UIManager.getString("FileChooser.saveButtonText", l); openButtonText = UIManager.getString("FileChooser.openButtonText", l); saveDialogTitleText = UIManager.getString("FileChooser.saveDialogTitleText", l); openDialogTitleText = UIManager.getString("FileChooser.openDialogTitleText", l); cancelButtonText = UIManager.getString("FileChooser.cancelButtonText", l); updateButtonText = UIManager.getString("FileChooser.updateButtonText", l); helpButtonText = UIManager.getString("FileChooser.helpButtonText", l); directoryOpenButtonText = UIManager.getString("FileChooser.directoryOpenButtonText", l); saveButtonMnemonic = getMnemonic("FileChooser.saveButtonMnemonic", l); openButtonMnemonic = getMnemonic("FileChooser.openButtonMnemonic", l); cancelButtonMnemonic = getMnemonic("FileChooser.cancelButtonMnemonic", l); updateButtonMnemonic = getMnemonic("FileChooser.updateButtonMnemonic", l); helpButtonMnemonic = getMnemonic("FileChooser.helpButtonMnemonic", l); directoryOpenButtonMnemonic = getMnemonic("FileChooser.directoryOpenButtonMnemonic", l); saveButtonToolTipText = UIManager.getString("FileChooser.saveButtonToolTipText", l); openButtonToolTipText = UIManager.getString("FileChooser.openButtonToolTipText", l); cancelButtonToolTipText = UIManager.getString("FileChooser.cancelButtonToolTipText", l); updateButtonToolTipText = UIManager.getString("FileChooser.updateButtonToolTipText", l); helpButtonToolTipText = UIManager.getString("FileChooser.helpButtonToolTipText", l); directoryOpenButtonToolTipText = UIManager.getString("FileChooser.directoryOpenButtonToolTipText", l); } /** * Uninstalls the defaults. * @param fc the file chooser */ protected void uninstallDefaults(JFileChooser fc) { uninstallIcons(fc); uninstallStrings(fc); if (fc.getTransferHandler() instanceof UIResource) { fc.setTransferHandler(null); } } /** * Uninstalls the icons. * @param fc the file chooser */ protected void uninstallIcons(JFileChooser fc) { directoryIcon = null; fileIcon = null; computerIcon = null; hardDriveIcon = null; floppyDriveIcon = null; newFolderIcon = null; upFolderIcon = null; homeFolderIcon = null; detailsViewIcon = null; listViewIcon = null; viewMenuIcon = null; } /** * Uninstalls the strings. * @param fc the file chooser */ protected void uninstallStrings(JFileChooser fc) { saveButtonText = null; openButtonText = null; cancelButtonText = null; updateButtonText = null; helpButtonText = null; directoryOpenButtonText = null; saveButtonToolTipText = null; openButtonToolTipText = null; cancelButtonToolTipText = null; updateButtonToolTipText = null; helpButtonToolTipText = null; directoryOpenButtonToolTipText = null; } /** * Creates the model. */ protected void createModel() { if (model != null) { model.invalidateFileCache(); } model = new BasicDirectoryModel(getFileChooser()); } /** * Returns the model. * @return the model */ public BasicDirectoryModel getModel() { return model; } /** * Creates the property change listener. * @param fc the file chooser * @return the property change listener */ public PropertyChangeListener createPropertyChangeListener(JFileChooser fc) { return null; } /** * Returns the file name. * @return the file name */ public String getFileName() { return null; } /** * Returns the directory name. * @return the directory name */ public String getDirectoryName() { return null; } /** * Sets the file name. * @param filename the file name */ public void setFileName(String filename) { } /** * Sets the directory name. * @param dirname the file name */ public void setDirectoryName(String dirname) { } /** * {@inheritDoc} */ public void rescanCurrentDirectory(JFileChooser fc) { } /** * {@inheritDoc} */ public void ensureFileIsVisible(JFileChooser fc, File f) { } /** * Returns the file chooser. * @return the file chooser */ public JFileChooser getFileChooser() { return filechooser; } /** * Returns the accessory panel. * @return the accessory panel */ public JPanel getAccessoryPanel() { return accessoryPanel; } /** * Returns the approve button. * @param fc the file chooser * @return the approve button */ protected JButton getApproveButton(JFileChooser fc) { return null; } /** * {@inheritDoc} */ public JButton getDefaultButton(JFileChooser fc) { return getApproveButton(fc); } /** * Returns the approve button tool tip. * @param fc the file chooser * @return the approve button tool tip */ public String getApproveButtonToolTipText(JFileChooser fc) { String tooltipText = fc.getApproveButtonToolTipText(); if (tooltipText != null) { return tooltipText; } if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) { return openButtonToolTipText; } else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) { return saveButtonToolTipText; } return null; } /** * Clears the icon cache. */ public void clearIconCache() { fileView.clearIconCache(); } // ******************************************** // ************ Create Listeners ************** // ******************************************** private Handler getHandler() { if (handler == null) { handler = new Handler(); } return handler; } /** * Creates a double click listener. * @param fc the file chooser * @param list the list * @return a double click listener */ protected MouseListener createDoubleClickListener(JFileChooser fc, JList<?> list) { return new Handler(list); } /** * Creates a list selection listener. * @param fc the file chooser * @return a list selection listener */ public ListSelectionListener createListSelectionListener(JFileChooser fc) { return getHandler(); } private class Handler implements MouseListener, ListSelectionListener { JList<?> list; Handler() { } Handler(JList<?> list) { this.list = list; } public void mouseClicked(MouseEvent evt) { // Note: we can't depend on evt.getSource() because of backward // compatibility if (list != null && SwingUtilities.isLeftMouseButton(evt) && (evt.getClickCount() % 2 == 0)) { int index = SwingUtilities2.loc2IndexFileList(list, evt.getPoint()); if (index >= 0) { File f = (File) list.getModel().getElementAt(index); try { // Strip trailing ".." f = ShellFolder.getNormalizedFile(f); } catch (IOException ex) { // That's ok, we'll use f as is } if (getFileChooser().isTraversable(f)) { list.clearSelection(); changeDirectory(f); } else { getFileChooser().approveSelection(); } } } } public void mouseEntered(MouseEvent evt) { if (list != null) { TransferHandler th1 = getFileChooser().getTransferHandler(); TransferHandler th2 = list.getTransferHandler(); if (th1 != th2) { list.setTransferHandler(th1); } if (getFileChooser().getDragEnabled() != list.getDragEnabled()) { list.setDragEnabled(getFileChooser().getDragEnabled()); } } } public void mouseExited(MouseEvent evt) { } public void mousePressed(MouseEvent evt) { } public void mouseReleased(MouseEvent evt) { } @SuppressWarnings("deprecation") public void valueChanged(ListSelectionEvent evt) { if (!evt.getValueIsAdjusting()) { JFileChooser chooser = getFileChooser(); FileSystemView fsv = chooser.getFileSystemView(); @SuppressWarnings("unchecked") JList<?> list = (JList) evt.getSource(); int fsm = chooser.getFileSelectionMode(); boolean useSetDirectory = usesSingleFilePane && (fsm == JFileChooser.FILES_ONLY); if (chooser.isMultiSelectionEnabled()) { File[] files = null; Object[] objects = list.getSelectedValues(); if (objects != null) { if (objects.length == 1 && ((File) objects[0]).isDirectory() && chooser.isTraversable(((File) objects[0])) && (useSetDirectory || !fsv.isFileSystem(((File) objects[0])))) { setDirectorySelected(true); setDirectory(((File) objects[0])); } else { ArrayList<File> fList = new ArrayList<File>(objects.length); for (Object object : objects) { File f = (File) object; boolean isDir = f.isDirectory(); if ((chooser.isFileSelectionEnabled() && !isDir) || (chooser.isDirectorySelectionEnabled() && fsv.isFileSystem(f) && isDir)) { fList.add(f); } } if (fList.size() > 0) { files = fList.toArray(new File[fList.size()]); } setDirectorySelected(false); } } chooser.setSelectedFiles(files); } else { File file = (File) list.getSelectedValue(); if (file != null && file.isDirectory() && chooser.isTraversable(file) && (useSetDirectory || !fsv.isFileSystem(file))) { setDirectorySelected(true); setDirectory(file); if (usesSingleFilePane) { chooser.setSelectedFile(null); } } else { setDirectorySelected(false); if (file != null) { chooser.setSelectedFile(file); } } } } } } /** * A double click listener. */ protected class DoubleClickListener extends MouseAdapter { // NOTE: This class exists only for backward compatibility. All // its functionality has been moved into Handler. If you need to add // new functionality add it to the Handler, but make sure this // class calls into the Handler. Handler handler; /** * Constucts a {@code DoubleClickListener}. * @param list the lsit */ public DoubleClickListener(JList<?> list) { handler = new Handler(list); } /** * The JList used for representing the files is created by subclasses, but the * selection is monitored in this class. The TransferHandler installed in the * JFileChooser is also installed in the file list as it is used as the actual * transfer source. The list is updated on a mouse enter to reflect the current * data transfer state of the file chooser. */ public void mouseEntered(MouseEvent e) { handler.mouseEntered(e); } /** {@inheritDoc} */ public void mouseClicked(MouseEvent e) { handler.mouseClicked(e); } } /** * A selection listener. */ protected class SelectionListener implements ListSelectionListener { // NOTE: This class exists only for backward compatibility. All // its functionality has been moved into Handler. If you need to add // new functionality add it to the Handler, but make sure this // class calls into the Handler. /** {@inheritDoc} */ public void valueChanged(ListSelectionEvent e) { getHandler().valueChanged(e); } } /** * Property to remember whether a directory is currently selected in the UI. * * @return <code>true</code> iff a directory is currently selected. * @since 1.4 */ protected boolean isDirectorySelected() { return directorySelected; } /** * Property to remember whether a directory is currently selected in the UI. * This is normally called by the UI on a selection event. * * @param b iff a directory is currently selected. * @since 1.4 */ protected void setDirectorySelected(boolean b) { directorySelected = b; } /** * Property to remember the directory that is currently selected in the UI. * * @return the value of the <code>directory</code> property * @see #setDirectory * @since 1.4 */ protected File getDirectory() { return directory; } /** * Property to remember the directory that is currently selected in the UI. * This is normally called by the UI on a selection event. * * @param f the <code>File</code> object representing the directory that is * currently selected * @since 1.4 */ protected void setDirectory(File f) { directory = f; } /** * Returns the mnemonic for the given key. */ private int getMnemonic(String key, Locale l) { return SwingUtilities2.getUIDefaultsInt(key, l); } // ******************************************************* // ************ FileChooser UI PLAF methods ************** // ******************************************************* /** * Returns the default accept all file filter */ public FileFilter getAcceptAllFileFilter(JFileChooser fc) { return acceptAllFileFilter; } public FileView getFileView(JFileChooser fc) { return fileView; } /** * Returns the title of this dialog * @param fc the file chooser * @return the title of this dialog */ public String getDialogTitle(JFileChooser fc) { String dialogTitle = fc.getDialogTitle(); if (dialogTitle != null) { return dialogTitle; } else if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) { return openDialogTitleText; } else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) { return saveDialogTitleText; } else { return getApproveButtonText(fc); } } /** * Returns the approve button mnemonic. * @param fc the file chooser * @return the approve button mnemonic */ public int getApproveButtonMnemonic(JFileChooser fc) { int mnemonic = fc.getApproveButtonMnemonic(); if (mnemonic > 0) { return mnemonic; } else if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) { return openButtonMnemonic; } else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) { return saveButtonMnemonic; } else { return mnemonic; } } /** {@inheritDoc} */ public String getApproveButtonText(JFileChooser fc) { String buttonText = fc.getApproveButtonText(); if (buttonText != null) { return buttonText; } else if (fc.getDialogType() == JFileChooser.OPEN_DIALOG) { return openButtonText; } else if (fc.getDialogType() == JFileChooser.SAVE_DIALOG) { return saveButtonText; } else { return null; } } // ***************************** // ***** Directory Actions ***** // ***************************** /** * Returns a new folder action. * @return a new folder action */ public Action getNewFolderAction() { if (newFolderAction == null) { newFolderAction = new NewFolderAction(); // Note: Don't return null for readOnly, it might // break older apps. if (readOnly) { newFolderAction.setEnabled(false); } } return newFolderAction; } /** * Returns a go home action. * @return a go home action */ public Action getGoHomeAction() { return goHomeAction; } /** * Returns a change to parent directory action. * @return a change to parent directory action */ public Action getChangeToParentDirectoryAction() { return changeToParentDirectoryAction; } /** * Returns an approve selection action. * @return an approve selection action */ public Action getApproveSelectionAction() { return approveSelectionAction; } /** * Returns a cancel selection action. * @return a cancel selection action */ public Action getCancelSelectionAction() { return cancelSelectionAction; } /** * Returns an update action. * @return an update action */ public Action getUpdateAction() { return updateAction; } /** * Creates a new folder. */ @SuppressWarnings("serial") // Superclass is not serializable across versions protected class NewFolderAction extends AbstractAction { /** Constructs a {@code NewFolderAction}. */ protected NewFolderAction() { super(FilePane.ACTION_NEW_FOLDER); } /** {@inheritDoc} */ public void actionPerformed(ActionEvent e) { if (readOnly) { return; } JFileChooser fc = getFileChooser(); File currentDirectory = fc.getCurrentDirectory(); if (!currentDirectory.exists()) { JOptionPane.showMessageDialog(fc, newFolderParentDoesntExistText, newFolderParentDoesntExistTitleText, JOptionPane.WARNING_MESSAGE); return; } File newFolder; try { newFolder = fc.getFileSystemView().createNewFolder(currentDirectory); if (fc.isMultiSelectionEnabled()) { fc.setSelectedFiles(new File[] { newFolder }); } else { fc.setSelectedFile(newFolder); } } catch (IOException exc) { JOptionPane.showMessageDialog(fc, newFolderErrorText + newFolderErrorSeparator + exc, newFolderErrorText, JOptionPane.ERROR_MESSAGE); return; } fc.rescanCurrentDirectory(); } } /** * Acts on the "home" key event or equivalent event. */ @SuppressWarnings("serial") // Superclass is not serializable across versions protected class GoHomeAction extends AbstractAction { /** Constructs a {@code GoHomeAction}. */ protected GoHomeAction() { super("Go Home"); } public void actionPerformed(ActionEvent e) { JFileChooser fc = getFileChooser(); changeDirectory(fc.getFileSystemView().getHomeDirectory()); } } /** * Change to parent directory action. */ @SuppressWarnings("serial") // Superclass is not serializable across versions protected class ChangeToParentDirectoryAction extends AbstractAction { /** Constructs a {@code ChangeToParentDirectoryAction}. */ protected ChangeToParentDirectoryAction() { super("Go Up"); putValue(Action.ACTION_COMMAND_KEY, FilePane.ACTION_CHANGE_TO_PARENT_DIRECTORY); } /** {@inheritDoc} */ public void actionPerformed(ActionEvent e) { getFileChooser().changeToParentDirectory(); } } /** * Responds to an Open or Save request */ @SuppressWarnings("serial") // Superclass is not serializable across versions protected class ApproveSelectionAction extends AbstractAction { /** Constructs an {@code ApproveSelectionAction}. */ protected ApproveSelectionAction() { super(FilePane.ACTION_APPROVE_SELECTION); } /** {@inheritDoc} */ public void actionPerformed(ActionEvent e) { if (isDirectorySelected()) { File dir = getDirectory(); if (dir != null) { try { // Strip trailing ".." dir = ShellFolder.getNormalizedFile(dir); } catch (IOException ex) { // Ok, use f as is } changeDirectory(dir); return; } } JFileChooser chooser = getFileChooser(); String filename = getFileName(); FileSystemView fs = chooser.getFileSystemView(); File dir = chooser.getCurrentDirectory(); if (filename == null || filename.length() == 0) { // no file selected, multiple selection off, therefore cancel the approve action resetGlobFilter(); return; } File selectedFile = null; File[] selectedFiles = null; // Unix: Resolve '~' to user's home directory if (File.separatorChar == '/') { if (filename.startsWith("~/")) { filename = System.getProperty("user.home") + filename.substring(1); } else if (filename.equals("~")) { filename = System.getProperty("user.home"); } } if (chooser.isMultiSelectionEnabled() && filename.length() > 1 && filename.charAt(0) == '"' && filename.charAt(filename.length() - 1) == '"') { List<File> fList = new ArrayList<File>(); String[] files = filename.substring(1, filename.length() - 1).split("\" \""); // Optimize searching files by names in "children" array Arrays.sort(files); File[] children = null; int childIndex = 0; for (String str : files) { File file = fs.createFileObject(str); if (!file.isAbsolute()) { if (children == null) { children = fs.getFiles(dir, false); Arrays.sort(children); } for (int k = 0; k < children.length; k++) { int l = (childIndex + k) % children.length; if (children[l].getName().equals(str)) { file = children[l]; childIndex = l + 1; break; } } } fList.add(file); } if (!fList.isEmpty()) { selectedFiles = fList.toArray(new File[fList.size()]); } resetGlobFilter(); } else { selectedFile = fs.createFileObject(filename); if (!selectedFile.isAbsolute()) { selectedFile = fs.getChild(dir, filename); } // check for wildcard pattern FileFilter currentFilter = chooser.getFileFilter(); if (!selectedFile.exists() && isGlobPattern(filename)) { changeDirectory(selectedFile.getParentFile()); if (globFilter == null) { globFilter = new GlobFilter(); } try { globFilter.setPattern(selectedFile.getName()); if (!(currentFilter instanceof GlobFilter)) { actualFileFilter = currentFilter; } chooser.setFileFilter(null); chooser.setFileFilter(globFilter); return; } catch (PatternSyntaxException pse) { // Not a valid glob pattern. Abandon filter. } } resetGlobFilter(); // Check for directory change action boolean isDir = (selectedFile != null && selectedFile.isDirectory()); boolean isTrav = (selectedFile != null && chooser.isTraversable(selectedFile)); boolean isDirSelEnabled = chooser.isDirectorySelectionEnabled(); boolean isFileSelEnabled = chooser.isFileSelectionEnabled(); @SuppressWarnings("deprecation") boolean isCtrl = (e != null && (e.getModifiers() & Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()) != 0); if (isDir && isTrav && (isCtrl || !isDirSelEnabled)) { changeDirectory(selectedFile); return; } else if ((isDir || !isFileSelEnabled) && (!isDir || !isDirSelEnabled) && (!isDirSelEnabled || selectedFile.exists())) { selectedFile = null; } } if (selectedFiles != null || selectedFile != null) { if (selectedFiles != null || chooser.isMultiSelectionEnabled()) { if (selectedFiles == null) { selectedFiles = new File[] { selectedFile }; } chooser.setSelectedFiles(selectedFiles); // Do it again. This is a fix for bug 4949273 to force the // selected value in case the ListSelectionModel clears it // for non-existing file names. chooser.setSelectedFiles(selectedFiles); } else { chooser.setSelectedFile(selectedFile); } chooser.approveSelection(); } else { if (chooser.isMultiSelectionEnabled()) { chooser.setSelectedFiles(null); } else { chooser.setSelectedFile(null); } chooser.cancelSelection(); } } } private void resetGlobFilter() { if (actualFileFilter != null) { JFileChooser chooser = getFileChooser(); FileFilter currentFilter = chooser.getFileFilter(); if (currentFilter != null && currentFilter.equals(globFilter)) { chooser.setFileFilter(actualFileFilter); chooser.removeChoosableFileFilter(globFilter); } actualFileFilter = null; } } private static boolean isGlobPattern(String filename) { return ((File.separatorChar == '\\' && (filename.indexOf('*') >= 0 || filename.indexOf('?') >= 0)) || (File.separatorChar == '/' && (filename.indexOf('*') >= 0 || filename.indexOf('?') >= 0 || filename.indexOf('[') >= 0))); } /* A file filter which accepts file patterns containing * the special wildcards *? on Windows and *?[] on Unix. */ class GlobFilter extends FileFilter { Pattern pattern; String globPattern; public void setPattern(String globPattern) { char[] gPat = globPattern.toCharArray(); char[] rPat = new char[gPat.length * 2]; boolean isWin32 = (File.separatorChar == '\\'); boolean inBrackets = false; int j = 0; this.globPattern = globPattern; if (isWin32) { // On windows, a pattern ending with *.* is equal to ending with * int len = gPat.length; if (globPattern.endsWith("*.*")) { len -= 2; } for (int i = 0; i < len; i++) { switch (gPat[i]) { case '*': rPat[j++] = '.'; rPat[j++] = '*'; break; case '?': rPat[j++] = '.'; break; case '\\': rPat[j++] = '\\'; rPat[j++] = '\\'; break; default: if ("+()^$.{}[]".indexOf(gPat[i]) >= 0) { rPat[j++] = '\\'; } rPat[j++] = gPat[i]; break; } } } else { for (int i = 0; i < gPat.length; i++) { switch (gPat[i]) { case '*': if (!inBrackets) { rPat[j++] = '.'; } rPat[j++] = '*'; break; case '?': rPat[j++] = inBrackets ? '?' : '.'; break; case '[': inBrackets = true; rPat[j++] = gPat[i]; if (i < gPat.length - 1) { switch (gPat[i + 1]) { case '!': case '^': rPat[j++] = '^'; i++; break; case ']': rPat[j++] = gPat[++i]; break; } } break; case ']': rPat[j++] = gPat[i]; inBrackets = false; break; case '\\': if (i == 0 && gPat.length > 1 && gPat[1] == '~') { rPat[j++] = gPat[++i]; } else { rPat[j++] = '\\'; if (i < gPat.length - 1 && "*?[]".indexOf(gPat[i + 1]) >= 0) { rPat[j++] = gPat[++i]; } else { rPat[j++] = '\\'; } } break; default: //if ("+()|^$.{}<>".indexOf(gPat[i]) >= 0) { if (!Character.isLetterOrDigit(gPat[i])) { rPat[j++] = '\\'; } rPat[j++] = gPat[i]; break; } } } this.pattern = Pattern.compile(new String(rPat, 0, j), Pattern.CASE_INSENSITIVE); } public boolean accept(File f) { if (f == null) { return false; } if (f.isDirectory()) { return true; } return pattern.matcher(f.getName()).matches(); } public String getDescription() { return globPattern; } } /** * Responds to a cancel request. */ @SuppressWarnings("serial") // Superclass is not serializable across versions protected class CancelSelectionAction extends AbstractAction { /** {@inheritDoc} */ public void actionPerformed(ActionEvent e) { getFileChooser().cancelSelection(); } } /** * Rescans the files in the current directory */ @SuppressWarnings("serial") // Superclass is not serializable across versions protected class UpdateAction extends AbstractAction { /** {@inheritDoc} */ public void actionPerformed(ActionEvent e) { JFileChooser fc = getFileChooser(); fc.setCurrentDirectory(fc.getFileSystemView().createFileObject(getDirectoryName())); fc.rescanCurrentDirectory(); } } private void changeDirectory(File dir) { JFileChooser fc = getFileChooser(); // Traverse shortcuts on Windows if (dir != null && FilePane.usesShellFolder(fc)) { try { ShellFolder shellFolder = ShellFolder.getShellFolder(dir); if (shellFolder.isLink()) { File linkedTo = shellFolder.getLinkLocation(); // If linkedTo is null we try to use dir if (linkedTo != null) { if (fc.isTraversable(linkedTo)) { dir = linkedTo; } else { return; } } else { dir = shellFolder; } } } catch (FileNotFoundException ex) { return; } } fc.setCurrentDirectory(dir); if (fc.getFileSelectionMode() == JFileChooser.FILES_AND_DIRECTORIES && fc.getFileSystemView().isFileSystem(dir)) { setFileName(dir.getAbsolutePath()); } } // ***************************************** // ***** default AcceptAll file filter ***** // ***************************************** /** * Accept all file filter. */ protected class AcceptAllFileFilter extends FileFilter { /** Constructs an {@code AcceptAllFileFilter}. */ public AcceptAllFileFilter() { } /** * Returns true. * @param f the file * @return true */ public boolean accept(File f) { return true; } /** * {@inheritDoc} */ public String getDescription() { return UIManager.getString("FileChooser.acceptAllFileFilterText"); } } // *********************** // * FileView operations * // *********************** /** * A basic file view. */ protected class BasicFileView extends FileView { /* FileView type descriptions */ /** The icon cache */ protected Hashtable<File, Icon> iconCache = new Hashtable<File, Icon>(); /** Constructs a {@code BasicFileView}. */ public BasicFileView() { } /** * Clears the icon cache. */ public void clearIconCache() { iconCache = new Hashtable<File, Icon>(); } /** {@inheritDoc} */ public String getName(File f) { // Note: Returns display name rather than file name String fileName = null; if (f != null) { fileName = getFileChooser().getFileSystemView().getSystemDisplayName(f); } return fileName; } /** {@inheritDoc} */ public String getDescription(File f) { return f.getName(); } /** {@inheritDoc} */ public String getTypeDescription(File f) { String type = getFileChooser().getFileSystemView().getSystemTypeDescription(f); if (type == null) { if (f.isDirectory()) { type = directoryDescriptionText; } else { type = fileDescriptionText; } } return type; } /** * Returns the cached icon for the file. * @param f the file * @return the cached icon for the file */ public Icon getCachedIcon(File f) { return iconCache.get(f); } /** * Caches an icon for a file. * @param f the file * @param i the icon */ public void cacheIcon(File f, Icon i) { if (f == null || i == null) { return; } iconCache.put(f, i); } /** {@inheritDoc} */ public Icon getIcon(File f) { Icon icon = getCachedIcon(f); if (icon != null) { return icon; } icon = fileIcon; if (f != null) { FileSystemView fsv = getFileChooser().getFileSystemView(); if (fsv.isFloppyDrive(f)) { icon = floppyDriveIcon; } else if (fsv.isDrive(f)) { icon = hardDriveIcon; } else if (fsv.isComputerNode(f)) { icon = computerIcon; } else if (f.isDirectory()) { icon = directoryIcon; } } cacheIcon(f, icon); return icon; } /** * Returns whether or not a file is hidden. * @param f the file * @return whether or not a file is hidden */ public Boolean isHidden(File f) { String name = f.getName(); if (name != null && name.charAt(0) == '.') { return Boolean.TRUE; } else { return Boolean.FALSE; } } } private static final TransferHandler defaultTransferHandler = new FileTransferHandler(); /** * Data transfer support for the file chooser. Since files are currently presented * as a list, the list support is reused with the added flavor of DataFlavor.javaFileListFlavor */ @SuppressWarnings("serial") // JDK-implementation class static class FileTransferHandler extends TransferHandler implements UIResource { /** * Create a Transferable to use as the source for a data transfer. * * @param c The component holding the data to be transfered. This * argument is provided to enable sharing of TransferHandlers by * multiple components. * @return The representation of the data to be transfered. * */ @SuppressWarnings("deprecation") protected Transferable createTransferable(JComponent c) { Object[] values = null; if (c instanceof JList) { values = ((JList) c).getSelectedValues(); } else if (c instanceof JTable) { JTable table = (JTable) c; int[] rows = table.getSelectedRows(); if (rows != null) { values = new Object[rows.length]; for (int i = 0; i < rows.length; i++) { values[i] = table.getValueAt(rows[i], 0); } } } if (values == null || values.length == 0) { return null; } StringBuilder plainBuf = new StringBuilder(); StringBuilder htmlBuf = new StringBuilder(); htmlBuf.append("<html>\n<body>\n<ul>\n"); for (Object obj : values) { String val = ((obj == null) ? "" : obj.toString()); plainBuf.append(val).append('\n'); htmlBuf.append(" <li>").append(val).append('\n'); } // remove the last newline plainBuf.deleteCharAt(plainBuf.length() - 1); htmlBuf.append("</ul>\n</body>\n</html>"); return new FileTransferable(plainBuf.toString(), htmlBuf.toString(), values); } public int getSourceActions(JComponent c) { return COPY; } static class FileTransferable extends BasicTransferable { Object[] fileData; FileTransferable(String plainData, String htmlData, Object[] fileData) { super(plainData, htmlData); this.fileData = fileData; } /** * Best format of the file chooser is DataFlavor.javaFileListFlavor. */ protected DataFlavor[] getRicherFlavors() { DataFlavor[] flavors = new DataFlavor[1]; flavors[0] = DataFlavor.javaFileListFlavor; return flavors; } /** * The only richer format supported is the file list flavor */ protected Object getRicherData(DataFlavor flavor) { if (DataFlavor.javaFileListFlavor.equals(flavor)) { ArrayList<Object> files = new ArrayList<Object>(); for (Object file : this.fileData) { files.add(file); } return files; } return null; } } } }