basicfilechooserui.java

Mobile 应用程序使用 Java Micro Edition (Java ME) 平台

/*
 * @(#)BasicFileChooserUI.java	1.74 07/08/22
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

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.regex.*;
import sun.awt.shell.ShellFolder;
import sun.swing.*;
import sun.swing.SwingUtilities2;

/**
 * Basic L&F implementation of a FileChooser.
 *
 * @version %i% %g%
 * @author Jeff Dinkins
 */
public class BasicFileChooserUI extends FileChooserUI {

    /* FileView icons */
    protected Icon directoryIcon = null;
    protected Icon fileIcon = null;
    protected Icon computerIcon = null;
    protected Icon hardDriveIcon = null;
    protected Icon floppyDriveIcon = null;

    protected Icon newFolderIcon = null;
    protected Icon upFolderIcon = null;
    protected Icon homeFolderIcon = null;
    protected Icon listViewIcon = null;
    protected Icon detailsViewIcon = null;

    protected int saveButtonMnemonic = 0;
    protected int openButtonMnemonic = 0;
    protected int cancelButtonMnemonic = 0;
    protected int updateButtonMnemonic = 0;
    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;

    protected String saveButtonText = null;
    protected String openButtonText = null;
    protected String cancelButtonText = null;
    protected String updateButtonText = null;
    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;

    private String openDialogTitleText = null;
    private String saveDialogTitleText = null;

    protected String saveButtonToolTipText = null;
    protected String openButtonToolTipText = null;
    protected String cancelButtonToolTipText = null;
    protected String updateButtonToolTipText = null;
    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 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;


    public BasicFileChooserUI(JFileChooser b) {
    }

    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());
    }

    public void uninstallUI(JComponent c) {
	uninstallListeners((JFileChooser) filechooser);
	uninstallComponents((JFileChooser) filechooser);
	uninstallDefaults((JFileChooser) filechooser);

	if(accessoryPanel != null) {
	    accessoryPanel.removeAll();
	}

	accessoryPanel = null;
	getFileChooser().removeAll();

        handler = null;
    }

    public void installComponents(JFileChooser fc) {
    }

    public void uninstallComponents(JFileChooser fc) {
    }

    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;
    }


    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);
    }


    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);
    }

    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");
    }

    protected void installStrings(JFileChooser fc) {

        Locale l = fc.getLocale();
	newFolderErrorText = UIManager.getString("FileChooser.newFolderErrorText",l);
	newFolderErrorSeparator = UIManager.getString("FileChooser.newFolderErrorSeparator",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);
    }

    protected void uninstallDefaults(JFileChooser fc) {
	uninstallIcons(fc);
	uninstallStrings(fc);
	if (fc.getTransferHandler() instanceof UIResource) {
	    fc.setTransferHandler(null);
	}
    }

    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;
    }

    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;
    }

    protected void createModel() {
        if (model != null) {
            model.invalidateFileCache();
        }
	model = new BasicDirectoryModel(getFileChooser());
    }

    public BasicDirectoryModel getModel() {
	return model;
    }

    public PropertyChangeListener createPropertyChangeListener(JFileChooser fc) {
	return null;
    }

    public String getFileName() {
	return null;
    }

    public String getDirectoryName() {
	return null;
    }

    public void setFileName(String filename) {
    }

    public void setDirectoryName(String dirname) {
    }

    public void rescanCurrentDirectory(JFileChooser fc) {
    }

    public void ensureFileIsVisible(JFileChooser fc, File f) {
    }

    public JFileChooser getFileChooser() {
	return filechooser;
    }

    public JPanel getAccessoryPanel() {
	return accessoryPanel;
    }

    protected JButton getApproveButton(JFileChooser fc) {
	return null;
    }

    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;
    }

    public void clearIconCache() {
	fileView.clearIconCache();
    }


    // ********************************************
    // ************ Create Listeners **************
    // ********************************************

    private Handler getHandler() {
        if (handler == null) {
            handler = new Handler();
        }
        return handler;
    }

    protected MouseListener createDoubleClickListener(JFileChooser fc,
						      JList list) {
	return new Handler(list);
    }

    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
	    // compatability
	    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();