metalfilechooserui.java

java jdk 1.4的源码

/*
 * @(#)MetalFileChooserUI.java	1.69 03/02/17
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package javax.swing.plaf.metal;

import javax.swing.*;
import javax.swing.border.EmptyBorder;
import javax.swing.filechooser.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import javax.swing.table.*;
import javax.swing.text.Position;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.DateFormat;
import java.util.*;

import sun.awt.shell.ShellFolder;

/**
 * Metal L&F implementation of a FileChooser.
 *
 * @version 1.69 02/17/03
 * @author Jeff Dinkins
 */
public class MetalFileChooserUI extends BasicFileChooserUI {

    // Much of the Metal UI for JFilechooser is just a copy of
    // the windows implementation, but using Metal themed buttons, lists,
    // icons, etc. We are planning a complete rewrite, and hence we've
    // made most things in this class private.
    private JPanel centerPanel;

    private JLabel lookInLabel;
    private JComboBox directoryComboBox;
    private DirectoryComboBoxModel directoryComboBoxModel;
    private Action directoryComboBoxAction = new DirectoryComboBoxAction();

    private FilterComboBoxModel filterComboBoxModel;

    private JTextField fileNameTextField;

    private JToggleButton listViewButton;
    private JToggleButton detailsViewButton;
    private JPanel listViewPanel;
    private JPanel detailsViewPanel;
    private JPanel currentViewPanel;
    private FocusListener editorFocusListener = new FocusAdapter() {
	public void focusLost(FocusEvent e) {
	    if (! e.isTemporary()) {
		applyEdit();
	    }
	}
    };

    private boolean useShellFolder;

    private ListSelectionModel listSelectionModel;
    private JList list;
    private JTable detailsTable;

    private JButton approveButton;
    private JButton cancelButton;

    private JPanel buttonPanel;
    private JPanel bottomPanel;

    private JComboBox filterComboBox;

    private static final Dimension hstrut5 = new Dimension(5, 1);
    private static final Dimension hstrut11 = new Dimension(11, 1);

    private static final Dimension vstrut5  = new Dimension(1, 5);

    private static final Insets shrinkwrap = new Insets(0,0,0,0);

    // Preferred and Minimum sizes for the dialog box
    private static int PREF_WIDTH = 500;
    private static int PREF_HEIGHT = 326;
    private static Dimension PREF_SIZE = new Dimension(PREF_WIDTH, PREF_HEIGHT);

    private static int MIN_WIDTH = 500;
    private static int MIN_HEIGHT = 326;
    private static Dimension MIN_SIZE = new Dimension(MIN_WIDTH, MIN_HEIGHT);

    private static int LIST_PREF_WIDTH = 405;
    private static int LIST_PREF_HEIGHT = 135;
    private static Dimension LIST_PREF_SIZE = new Dimension(LIST_PREF_WIDTH, LIST_PREF_HEIGHT);

    private static final int COLUMN_FILENAME = 0;
    private static final int COLUMN_FILESIZE = 1;
    private static final int COLUMN_FILETYPE = 2;
    private static final int COLUMN_FILEDATE = 3;
    private static final int COLUMN_FILEATTR = 4;
    private static final int COLUMN_COLCOUNT = 5;

    private int[] COLUMN_WIDTHS = { 150,  75,  130,  130,  40 };

    // Labels, mnemonics, and tooltips (oh my!)
    private int    lookInLabelMnemonic = 0;
    private String lookInLabelText = null;
    private String saveInLabelText = null;

    private int    fileNameLabelMnemonic = 0;
    private String fileNameLabelText = null;

    private int    filesOfTypeLabelMnemonic = 0;
    private String filesOfTypeLabelText = null;

    private String upFolderToolTipText = null;
    private String upFolderAccessibleName = null;

    private String homeFolderToolTipText = null;
    private String homeFolderAccessibleName = null;

    private String newFolderToolTipText = null;
    private String newFolderAccessibleName = null;

    private String listViewButtonToolTipText = null;
    private String listViewButtonAccessibleName = null;

    private String detailsViewButtonToolTipText = null;
    private String detailsViewButtonAccessibleName = null;

    private String fileNameHeaderText = null;
    private String fileSizeHeaderText = null;
    private String fileTypeHeaderText = null;
    private String fileDateHeaderText = null;
    private String fileAttrHeaderText = null;

    //
    // ComponentUI Interface Implementation methods
    //
    public static ComponentUI createUI(JComponent c) {
        return new MetalFileChooserUI((JFileChooser) c);
    }

    public MetalFileChooserUI(JFileChooser filechooser) {
	super(filechooser);
    }

    public void installUI(JComponent c) {
	super.installUI(c);
    }

    public void uninstallComponents(JFileChooser fc) {
	fc.removeAll();
	bottomPanel = null;
	buttonPanel = null;
    }

    public void installComponents(JFileChooser fc) {
	FileSystemView fsv = fc.getFileSystemView();

	fc.setBorder(new EmptyBorder(12, 12, 11, 11));
	fc.setLayout(new BorderLayout(0, 11));

	// ********************************* //
	// **** Construct the top panel **** //
	// ********************************* //

	// Directory manipulation buttons
	JPanel topPanel = new JPanel(new BorderLayout(11, 0));
	JPanel topButtonPanel = new JPanel();
	topButtonPanel.setLayout(new BoxLayout(topButtonPanel, BoxLayout.LINE_AXIS));
	topPanel.add(topButtonPanel, BorderLayout.AFTER_LINE_ENDS);

	// Add the top panel to the fileChooser
	fc.add(topPanel, BorderLayout.NORTH);

	// ComboBox Label
     	lookInLabel = new JLabel(lookInLabelText);
     	lookInLabel.setDisplayedMnemonic(lookInLabelMnemonic);
	topPanel.add(lookInLabel, BorderLayout.BEFORE_LINE_BEGINS);

	// CurrentDir ComboBox
	directoryComboBox = new JComboBox();
	directoryComboBox.getAccessibleContext().setAccessibleDescription(lookInLabelText);
	directoryComboBox.putClientProperty( "JComboBox.lightweightKeyboardNavigation", "Lightweight" );
	lookInLabel.setLabelFor(directoryComboBox);
	directoryComboBoxModel = createDirectoryComboBoxModel(fc);
	directoryComboBox.setModel(directoryComboBoxModel);
	directoryComboBox.addActionListener(directoryComboBoxAction);
	directoryComboBox.setRenderer(createDirectoryComboBoxRenderer(fc));
	directoryComboBox.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	directoryComboBox.setAlignmentY(JComponent.TOP_ALIGNMENT);
	directoryComboBox.setMaximumRowCount(8);

	topPanel.add(directoryComboBox, BorderLayout.CENTER);

	// Up Button
	JButton upFolderButton = new JButton(getChangeToParentDirectoryAction());
	upFolderButton.setText(null);
	upFolderButton.setIcon(upFolderIcon);
     	upFolderButton.setToolTipText(upFolderToolTipText);
     	upFolderButton.getAccessibleContext().setAccessibleName(upFolderAccessibleName);
	upFolderButton.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	upFolderButton.setAlignmentY(JComponent.CENTER_ALIGNMENT);
	upFolderButton.setMargin(shrinkwrap);

	topButtonPanel.add(upFolderButton);
	topButtonPanel.add(Box.createRigidArea(hstrut5));

	// Home Button
	File homeDir = fsv.getHomeDirectory();
	String toolTipText = homeFolderToolTipText;
	if (fsv.isRoot(homeDir)) {
	    toolTipText = getFileView(fc).getName(homeDir); // Probably "Desktop".
	}




	JButton b = new JButton(homeFolderIcon);
     	b.setToolTipText(toolTipText);
     	b.getAccessibleContext().setAccessibleName(homeFolderAccessibleName);
	b.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	b.setAlignmentY(JComponent.CENTER_ALIGNMENT);
	b.setMargin(shrinkwrap);

	b.addActionListener(getGoHomeAction());
	topButtonPanel.add(b);
	topButtonPanel.add(Box.createRigidArea(hstrut5));

	// New Directory Button
	b = new JButton(getNewFolderAction());
	b.setText(null);
	b.setIcon(newFolderIcon);
     	b.setToolTipText(newFolderToolTipText);
     	b.getAccessibleContext().setAccessibleName(newFolderAccessibleName);
	b.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	b.setAlignmentY(JComponent.CENTER_ALIGNMENT);
	b.setMargin(shrinkwrap);

	topButtonPanel.add(b);
	topButtonPanel.add(Box.createRigidArea(hstrut5));

	// View button group
	ButtonGroup viewButtonGroup = new ButtonGroup();

	class ViewButtonListener implements ActionListener {
	    JFileChooser fc;

	    ViewButtonListener(JFileChooser fc) {
		this.fc = fc;
	    }

	    public void actionPerformed(ActionEvent e) {
		JToggleButton b = (JToggleButton)e.getSource();
		JPanel oldViewPanel = currentViewPanel;

		if (b == detailsViewButton) {
		    if (detailsViewPanel == null) {
			detailsViewPanel = createDetailsView(fc);
			detailsViewPanel.setPreferredSize(LIST_PREF_SIZE);
		    }
		    currentViewPanel = detailsViewPanel;
		} else {
		    currentViewPanel = listViewPanel;
		}
		if (currentViewPanel != oldViewPanel) {
		    centerPanel.remove(oldViewPanel);
		    centerPanel.add(currentViewPanel, BorderLayout.CENTER);
		    centerPanel.revalidate();
		    centerPanel.repaint();
		}
	    }
	}

	ViewButtonListener viewButtonListener = new ViewButtonListener(fc);

	// List Button
	listViewButton = new JToggleButton(listViewIcon);
     	listViewButton.setToolTipText(listViewButtonToolTipText);
     	listViewButton.getAccessibleContext().setAccessibleName(listViewButtonAccessibleName);
	listViewButton.setSelected(true);
	listViewButton.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	listViewButton.setAlignmentY(JComponent.CENTER_ALIGNMENT);
	listViewButton.setMargin(shrinkwrap);
	listViewButton.addActionListener(viewButtonListener);
	topButtonPanel.add(listViewButton);
	viewButtonGroup.add(listViewButton);

	// Details Button
	detailsViewButton = new JToggleButton(detailsViewIcon);
     	detailsViewButton.setToolTipText(detailsViewButtonToolTipText);
     	detailsViewButton.getAccessibleContext().setAccessibleName(detailsViewButtonAccessibleName);
	detailsViewButton.setAlignmentX(JComponent.LEFT_ALIGNMENT);
	detailsViewButton.setAlignmentY(JComponent.CENTER_ALIGNMENT);
	detailsViewButton.setMargin(shrinkwrap);
	detailsViewButton.addActionListener(viewButtonListener);
	topButtonPanel.add(detailsViewButton);
	viewButtonGroup.add(detailsViewButton);

	// Use ShellFolder class to populate combobox only if
	// FileSystemView.getRoots() returns one folder and that is
	// the same as the first item in the ShellFolder combobox list.
	{
	    useShellFolder = false;
	    File[] roots = fsv.getRoots();
	    if (roots != null && roots.length == 1) {
		File[] cbFolders = (File[])ShellFolder.get("fileChooserComboBoxFolders");
		if (cbFolders != null && cbFolders.length > 0 && roots[0] == cbFolders[0]) {
		    useShellFolder = true;
		}
	    }
	}

	// ************************************** //
	// ******* Add the directory pane ******* //
	// ************************************** //
	centerPanel = new JPanel(new BorderLayout());
	listViewPanel = createList(fc);
	listSelectionModel = list.getSelectionModel();
	listViewPanel.setPreferredSize(LIST_PREF_SIZE);
	centerPanel.add(listViewPanel, BorderLayout.CENTER);
	currentViewPanel = listViewPanel;
	centerPanel.add(getAccessoryPanel(), BorderLayout.AFTER_LINE_ENDS);
	JComponent accessory = fc.getAccessory();
	if(accessory != null) {
	    getAccessoryPanel().add(accessory);
	}
	fc.add(centerPanel, BorderLayout.CENTER);

	// ********************************** //
	// **** Construct the bottom panel ** //
	// ********************************** //
	JPanel bottomPanel = getBottomPanel();
	bottomPanel.setLayout(new BoxLayout(bottomPanel, BoxLayout.Y_AXIS));
	fc.add(bottomPanel, BorderLayout.SOUTH);

	// FileName label and textfield
	JPanel fileNamePanel = new JPanel();
	fileNamePanel.setLayout(new BoxLayout(fileNamePanel, BoxLayout.LINE_AXIS));
	bottomPanel.add(fileNamePanel);
	bottomPanel.add(Box.createRigidArea(vstrut5));

     	AlignedLabel fileNameLabel = new AlignedLabel(fileNameLabelText);
     	fileNameLabel.setDisplayedMnemonic(fileNameLabelMnemonic);
	fileNamePanel.add(fileNameLabel);

	fileNameTextField = new JTextField(35) {
	    public Dimension getMaximumSize() {
		return new Dimension(Short.MAX_VALUE, super.getPreferredSize().height);
	    }
	};
	fileNamePanel.add(fileNameTextField);
	fileNameLabel.setLabelFor(fileNameTextField);
        fileNameTextField.addFocusListener(
	    new FocusAdapter() {
		public void focusGained(FocusEvent e) {
		    if (!getFileChooser().isMultiSelectionEnabled()) {
			listSelectionModel.clearSelection();
		    }
		}
	    }
        );
	if (fc.isMultiSelectionEnabled()) {
	    setFileName(fileNameString(fc.getSelectedFiles()));
	} else {
	    setFileName(fileNameString(fc.getSelectedFile()));
	}


	// Filetype label and combobox
	JPanel filesOfTypePanel = new JPanel();
	filesOfTypePanel.setLayout(new BoxLayout(filesOfTypePanel, BoxLayout.LINE_AXIS));
	bottomPanel.add(filesOfTypePanel);

     	AlignedLabel filesOfTypeLabel = new AlignedLabel(filesOfTypeLabelText);
     	filesOfTypeLabel.setDisplayedMnemonic(filesOfTypeLabelMnemonic);
	filesOfTypePanel.add(filesOfTypeLabel);

	filterComboBoxModel = createFilterComboBoxModel();
	fc.addPropertyChangeListener(filterComboBoxModel);
	filterComboBox = new JComboBox(filterComboBoxModel);
	filterComboBox.getAccessibleContext().setAccessibleDescription(filesOfTypeLabelText);
	filesOfTypeLabel.setLabelFor(filterComboBox);
	filterComboBox.setRenderer(createFilterComboBoxRenderer());
	filesOfTypePanel.add(filterComboBox);

	// buttons
	getButtonPanel().setLayout(new ButtonAreaLayout());

	approveButton = new JButton(getApproveButtonText(fc));
	// Note: Metal does not use mnemonics for approve and cancel
	approveButton.addActionListener(getApproveSelectionAction());
	approveButton.setToolTipText(getApproveButtonToolTipText(fc));
	getButtonPanel().add(approveButton);

	cancelButton = new JButton(cancelButtonText);
	cancelButton.setToolTipText(cancelButtonToolTipText);