使用Swingselect一个文件窗格

我正在Swing中编写一个GUI，我想在主窗口中执行一个文件select器，如下图所示：

虽然似乎有很多关于如何编写popup文件select器的教程，但是我没有看到关于如何在摆动中完成这种types的select器的信息。

也很抱歉，如果这之前已经问过，我做了很多的search周围，无法find其他东西。

Answer 1

JFileChooser实际上扩展了JComponent，所以你可以像其他任何组件一样使用。 以下是两个窗格内文件select器的示例：

public class TestInPaneChoosers { public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { buildFrame(); } }); } private static void buildFrame() { JFrame f = new JFrame("Test"); f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); f.setLayout(new FlowLayout()); f.add(new JFileChooser()); f.add(new JFileChooser()); f.pack(); f.setLocationRelativeTo(null); f.setVisible(true); } } 

Answer 2

下面显示的PanelBrowser是一个基本的原型，其function类似于您的问题中所示的Mac OS X Finder列视图。

更新：增加了水平滚动和更多的文件信息。

 import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.GridLayout; import java.io.File; import java.text.DateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.swing.Box; import javax.swing.BoxLayout; import javax.swing.DefaultListCellRenderer; import javax.swing.DefaultListModel; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JList; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.ListSelectionModel; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import javax.swing.filechooser.FileSystemView; /** * @see http://stackoverflow.com/a/15104660/230513 */ public class PanelBrowser extends Box { private static final Dimension SIZE = new Dimension(200, 300); private List<FilePanel> list = new ArrayList<FilePanel>(); public PanelBrowser(File root) { super(BoxLayout.LINE_AXIS); setBackground(Color.red); FilePanel panel = new FilePanel(this, root); list.add(panel); this.add(panel); } private void update(FilePanel fp, File file) { int index = list.indexOf(fp); int i = list.size() - 1; while (i > index) { list.remove(i); this.remove(i); i--; } final FilePanel panel = new FilePanel(this, file); list.add(panel); this.add(panel); revalidate(); EventQueue.invokeLater(new Runnable() { @Override public void run() { scrollRectToVisible(panel.getBounds()); } }); } private static class FilePanel extends Box { private static FileSystemView fsv = FileSystemView.getFileSystemView(); private static DateFormat df = DateFormat.getDateTimeInstance( DateFormat.SHORT, DateFormat.DEFAULT); private PanelBrowser parent; private JList list; public FilePanel(PanelBrowser parent, File file) { super(BoxLayout.PAGE_AXIS); this.parent = parent; DefaultListModel model = new DefaultListModel(); if (file.isFile()) { JLabel name = new JLabel(file.getName()); name.setIcon(fsv.getSystemIcon(file)); this.add(name); Date d = new Date(file.lastModified()); JLabel mod = new JLabel("Date: " + df.format(d)); this.add(mod); final String v = String.valueOf(file.length()); JLabel length = new JLabel("Size: " + v); this.add(length); } if (file.isDirectory()) { for (File f : file.listFiles()) { model.addElement(f); } list = new JList(model); list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); list.setCellRenderer(new FileRenderer()); list.addListSelectionListener(new SelectionHandler()); this.add(new JScrollPane(list) { @Override public int getVerticalScrollBarPolicy() { return JScrollPane.VERTICAL_SCROLLBAR_ALWAYS; } }); } } private static class FileRenderer extends DefaultListCellRenderer { @Override public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { JLabel label = (JLabel) super.getListCellRendererComponent( list, value, index, isSelected, cellHasFocus); File f = (File) value; setText(f.getName()); setIcon(fsv.getSystemIcon(f)); return label; } } private class SelectionHandler implements ListSelectionListener { @Override public void valueChanged(ListSelectionEvent e) { if (!e.getValueIsAdjusting()) { File f = (File) list.getSelectedValue(); parent.update(FilePanel.this, f); } } } @Override public Dimension getMinimumSize() { return new Dimension(SIZE); } @Override public Dimension getPreferredSize() { return new Dimension(SIZE); } @Override public Dimension getMaximumSize() { return new Dimension(SIZE.width, Short.MAX_VALUE); } } private static void display() { String path = System.getProperty("user.dir"); PanelBrowser browser = new PanelBrowser(new File(path)); JFrame f = new JFrame(path); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.add(new JScrollPane(browser) { @Override public int getVerticalScrollBarPolicy() { return JScrollPane.VERTICAL_SCROLLBAR_NEVER; } }); f.pack(); f.setSize(4 * SIZE.width, SIZE.height); f.setLocationRelativeTo(null); f.setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { @Override public void run() { display(); } }); } }