本文介绍了创建自定义 JFileChooser的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
要创建阿拉伯语 JFileChooser (RTL)，我使用以下内容:
To create an Arabic JFileChooser (RTL) I use the following:
我的文件选择器:
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;
}
}
主要内容:
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();
}
}
屏幕截图:
一切都很酷，除了某些部分我需要修改它们以便我可以得到一个阿拉伯语的 JFileChooser:
Everything is cool, except some parts I need to modify them so I can get an arabic JFileChooser:
- 当列表视图打开时，滚动条总是设置在左边.我该如何解决?
- 在详细信息视图中，表格的标题是用英文书写的.如何修改它或至少禁用详细信息视图?
- 标签最近的项目"、桌面"、我的文档"、计算机"和网络"我如何修改或至少删除它们?
推荐答案
下面是一个自定义 JFileChooser 的有趣类.它可以激发您进行更有趣的定制.看看方法customizeFileChooser().希望这会有所帮助.
below is an interesting class that customizes a JFileChooser. it can inspire you on doing more interesting customization. take a look at method customizeFileChooser(). hope this helps.
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;
}
}
}
}
这篇关于创建自定义 JFileChooser的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！