创建自定义JFileChooser
要创建阿拉伯语JFileChooser（RTL），我使用以下内容：
MyFileChooser：
import javax.swing.JOptionPane; import javax.swing.UIManager; import javax.swing.JFileChooser; import javax.swing.filechooser.FileNameExtensionFilter; import javax.swing.filechooser.FileView; import java.io.File; import java.awt.ComponentOrientation; import java.awt.Dimension; public class MyFileChooser extends JFileChooser { private String extension; private String title; public MyFileChooser(String extension, String title) { super(); this.extension = extension; this.title = title; addChoosableFileFilter(new FileNameExtensionFilter(String.format("(*.%1$s) فقط %1$s ملفات", extension), extension)); applyComponentOrientation(ComponentOrientation.RIGHT_TO_LEFT); //setPreferredSize(new Dimension(450, 350)); } @Override public String getDialogTitle() { return title; } @Override public File getSelectedFile() { File selectedFile = super.getSelectedFile(); if(selectedFile != null) { String name = selectedFile.getName(); if(!name.contains(".")) selectedFile = new File(selectedFile.getParentFile(), name + '.' + extension); } return selectedFile; } } 主要：
import java.awt.*; import javax.swing.*; import javax.swing.border.*; import java.awt.event.*; public class MainFrame extends JFrame implements ActionListener { public MyFileChooser chooser; public MainFrame() { super("Main Frame"); setDefaultCloseOperation(EXIT_ON_CLOSE); try{ UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());} catch(Exception e){ System.out.println("Unable to load Windows look and feel");} setPreferredSize(new Dimension(300, 100)); ((JPanel) getContentPane()).setBorder(new EmptyBorder(13, 13, 13, 13) ); setLayout(new FlowLayout()); JButton btn = new JButton("Open"); btn.setActionCommand("myButton"); btn.addActionListener(this); add(btn); JPanel panel = new JPanel(); UIManager.put("FileChooser.saveButtonText", "حفظ"); UIManager.put("FileChooser.openButtonText", "فتح"); UIManager.put("FileChooser.cancelButtonText", "إلغاء"); UIManager.put("FileChooser.updateButtonText", "تحديث"); UIManager.put("FileChooser.helpButtonText", "مساعدة"); UIManager.put("FileChooser.saveButtonToolTipText", "حفظ ملف"); UIManager.put("FileChooser.openButtonToolTipText", "فتح ملف"); UIManager.put("FileChooser.cancelButtonToolTipText", "إلغاء"); UIManager.put("FileChooser.updateButtonToolTipText", "تحديث"); UIManager.put("FileChooser.helpButtonToolTipText", "مساعدة"); UIManager.put("FileChooser.listViewButtonToolTipText", "قائمة"); UIManager.put("FileChooser.lookInLabelText", "بحث في:"); UIManager.put("FileChooser.newFolderToolTipText", "إنشاء مجلد جديد"); UIManager.put("FileChooser.fileNameLabelText", "اسم الملف:"); UIManager.put("FileChooser.filesOfTypeLabelText", " نوع الملف:"); UIManager.put("FileChooser.detailsViewButtonToolTipText", "تفاصيل"); UIManager.put("FileChooser.upFolderToolTipText", "للأعلى") chooser = new MyFileChooser("aaa", "العنوان"); chooser.setAcceptAllFileFilterUsed(false); chooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES); chooser.setFileHidingEnabled(false); pack(); setLocationRelativeTo(null); setVisible(true); setResizable(false); } public void actionPerformed(ActionEvent e) { if(e.getActionCommand().equals("myButton")) { int status = chooser.showOpenDialog(null); // blah blah } } public static void main(String[] args) { new MainFrame(); } }
截图：
一切都很酷，除了我需要修改它们的一些部分，所以我可以得到一个阿拉伯语JFileChooser：
- 列表视图打开时，滚动条始终设置为左侧。 我该如何解决？
- 在“详细信息”视图中，表的标题以英语编写。 如何修改它或至少禁用详细信息视图？
- 标题“最近的项目”，“桌面”，“我的文档”，“计算机”和“网络”如何修改它们或至少删除它们？
下面是一个定制JFileChooser的有趣类。 它可以激发你做更有趣的定制。 看一下方法customizeFileChooser（）。 希望这可以帮助。
public class MyJFileChooser extends JFileChooser { 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 static String[] COLUMNS = null; Vector detailsBtn = new Vector(); UI ui; static JTable tbl; public void customizeFileChooser(Component[] comp) { int cnt = 1; for (int x = 0; x < comp.length; x++) { if (comp[x] instanceof JPanel) { customizeFileChooser(((JPanel) comp[x]).getComponents()); Component[] c = ((JPanel) comp[x]).getComponents(); for (int i = 0; i < c.length; i++) { if (c[i] instanceof JTextField) { ((JTextField) c[i]).setVisible(false); } if (c[i] instanceof JToggleButton) { detailsBtn.add((JToggleButton) c[i]); ((JToggleButton) c[i]).doClick(); } if (c[i] instanceof JLabel) { JLabel lbl = (JLabel) c[i]; if (x == 0 && i == 0) { lbl.setVisible(false); } else if (x == 2 && i == 0) { lbl.setVisible(false); } else if (x == 0 && i == 1) { lbl.setVisible(false); } } if (c[i] instanceof JComboBox) { JComboBox b = (JComboBox) c[i]; if (x == 0 && i == 1) { b.setVisible(false); } if (x == 2 && i == 1) { b.setVisible(false); } if (x == 2 && i == 3) { b.setVisible(false); } } } } } } public MyJFileChooser() { if (COLUMNS == null) { Locale l = getLocale(); COLUMNS = new String[]{ UIManager.getString("FileChooser.fileNameHeaderText", l), UIManager.getString("FileChooser.fileSizeHeaderText", l), UIManager.getString("FileChooser.fileTypeHeaderText", l), UIManager.getString("FileChooser.fileDateHeaderText", l), UIManager.getString("FileChooser.fileAttrHeaderText", l) }; } } public void show() { MyJFileChooser fc = new MyJFileChooser(); fc.showOpenDialog(MyJFileChooser.this); } /************************************************************************** * Always create the local UI * @param comp *************************************************************************/ public final void setUI(ComponentUI comp) { super.setUI(ui = new UI(this)); } /************************************************************************** * Internal implementation of Metal LookAndFeel to create the table sorting * ability. *************************************************************************/ private final static class UI extends MetalFileChooserUI { private DirectoryModel model; /************************************************************************** * Must be overridden to extend * @param e *************************************************************************/ public UI(JFileChooser e) { super(e); } /************************************************************************** * Overridden to create our own model *************************************************************************/ protected final void createModel() { model = new DirectoryModel(getFileChooser()); } /************************************************************************** * Overridden to get our own model * @return *************************************************************************/ public final BasicDirectoryModel getModel() { return model; } /************************************************************************** * Calls the default method then adds a MouseListener to the JTable * @param chooser * @return *************************************************************************/ protected final JPanel createDetailsView(JFileChooser chooser) { final JPanel panel = super.createDetailsView(chooser); //Since we can't access MetalFileChooserUI's private member detailsTable //directly, we have to find it in the JPanel tbl = findJTable(panel.getComponents()); if (tbl != null) { //Fix the columns so they can't be rearranged, if we don't do this //we would need to keep track when each column is moved tbl.getTableHeader().setReorderingAllowed(false); //Add a mouselistener to listen for clicks on column headers tbl.getTableHeader().addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { //Only process single clicks if (e.getClickCount() > 1) { return; } e.consume(); final int col = tbl.getTableHeader().columnAtPoint(e.getPoint()); if (col == COLUMN_FILENAME || col == COLUMN_FILESIZE || col == COLUMN_FILEDATE) { model.sort(col, tbl); } } }); } return panel; } /************************************************************************** * Finds the JTable in the panel so we can add MouseListener * @param comp * @return *************************************************************************/ private final static JTable findJTable(Component[] comp) { for (int i = 0; i < comp.length; i++) { if (comp[i] instanceof JTable) { return (JTable) comp[i]; } if (comp[i] instanceof Container) { JTable tbl = findJTable(((Container) comp[i]).getComponents()); if (tbl != null) { return tbl; } } } return null; } } /*************************************************************************** * Implementation of BasicDirectoryModel that sorts the Files by column **************************************************************************/ private final static class DirectoryModel extends BasicDirectoryModel { int col = 0; boolean ascending; /************************************************************************** * Must be overridden to extend BasicDirectoryModel * @param chooser *************************************************************************/ DirectoryModel(JFileChooser chooser) { super(chooser); } /************************************************************************** * Supposedly this is not used anymore, hopefully not. We implemented * some basic attempt at sorting just in case * @param a * @param b * @return *************************************************************************/ protected final boolean lt(File a, File b) { System.out.println("LT called?"); boolean less = false; switch (col) { case COLUMN_FILEDATE: less = a.lastModified() > b.lastModified(); break; case COLUMN_FILESIZE: less = a.length() > b.length(); break; default: less = a.getName().compareToIgnoreCase(b.getName()) > 0; break; } if (ascending) { return less = !less; } return less; } /************************************************************************** * Resorts the JFileChooser table based on new column * @param c *************************************************************************/ protected final void sort(int c, JTable tbl) { //Set column and order col = c; ascending = !ascending; String indicator = " (^)"; if (ascending) { indicator = " (v)"; } final JTableHeader th = tbl.getTableHeader(); final TableColumnModel tcm = th.getColumnModel(); for (int i = 0; i < MyJFileChooser.COLUMN_COLCOUNT - 1; i++) { final TableColumn tc = tcm.getColumn(i); // the column to change tc.setHeaderValue(COLUMNS[i]); } final TableColumn tc = tcm.getColumn(col); // the column to change tc.setHeaderValue(COLUMNS[col] + indicator); th.repaint(); //Requery the file listing validateFileCache(); } /************************************************************************** * Sorts the data based on current column setting * @param data *************************************************************************/ protected final void sort(Vector data) { switch (col) { case COLUMN_FILEDATE: Collections.sort(data, new Comparator() { public int compare(Object o1, Object o2) { int ret = 1; final File a = (File) o1; final File b = (File) o2; if (a.lastModified() > b.lastModified()) { ret = -1; } else if (a.lastModified() == b.lastModified()) { ret = 0; } if (ascending) { ret *= -1; } return ret; } }); break; case COLUMN_FILESIZE: Collections.sort(data, new Comparator() { public int compare(Object o1, Object o2) { int ret = 1; final File a = (File) o1; final File b = (File) o2; if (a.length() > b.length()) { ret = -1; } else if (a.length() == b.length()) { ret = 0; } if (ascending) { ret *= -1; } return ret; } }); break; case COLUMN_FILENAME: Collections.sort(data, new Comparator() { public int compare(Object o1, Object o2) { final File a = (File) o1; final File b = (File) o2; if (ascending) { return a.getName().compareToIgnoreCase(b.getName()); } else { return -1 * a.getName().compareToIgnoreCase(b.getName()); } } }); break; } } } }