How to create a JList with icon and text?

Question

At me this code wants to make JList text of the conversation and an icon of what needs to be done.
Some people advise me to make a list of labels, and put a text icon in the table, is this possible? How?

Search by ///////////////// for the inline comment.

 import javax.swing.JPanel; import javax.swing.JButton; import javax.swing.JLabel; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.Transferable; import java.awt.datatransfer.UnsupportedFlavorException; import java.awt.dnd.DropTarget; import java.awt.dnd.DropTargetDragEvent; import java.awt.dnd.DropTargetDropEvent; import java.awt.dnd.DropTargetEvent; import java.awt.dnd.DropTargetListener; import java.io.File; import java.io.IOException; import java.util.List; import javax.swing.DefaultListModel; import javax.swing.Icon; import javax.swing.JList; import javax.swing.JScrollPane; import javax.swing.filechooser.FileSystemView; public class pan extends JPanel implements DropTargetListener { private DefaultListModel listModel = new DefaultListModel(); private DropTarget dropTarget; private JLabel jLabel1; private JScrollPane jScrollPane1; private JList list; /** * Create the panel. */ public pan() { setLayout(null); list = new JList(); dropTarget = new DropTarget(list, this); list.setModel(listModel); list.setDragEnabled(true); //list.setTransferHandler(new FileTransferHandler()); jScrollPane1 = new JScrollPane(); jScrollPane1.setViewportView(list); jScrollPane1.setBounds(10, 150, 635, 330); add(jScrollPane1); } public void dragEnter(DropTargetDragEvent arg0) { // nothing } public void dragOver(DropTargetDragEvent arg0) { // nothing } public void dropActionChanged(DropTargetDragEvent arg0) { // nothing } public void dragExit(DropTargetEvent arg0) { // nothing } public void drop(DropTargetDropEvent evt) { int action = evt.getDropAction(); evt.acceptDrop(action); try { Transferable data = evt.getTransferable(); if (data.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) { List<File> files = (List<File>) data.getTransferDat(DataFlavor.javaFileListFlavor); for (File file : files) { Icon icon=FileSystemView.getFileSystemView().getSystemIcon(file); /////////////////listModel.addElement(filepath+icon);///////////////////////want code do this } } } catch (UnsupportedFlavorException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { evt.dropComplete(true); } } } 

After solving this problem, I will add an action to each element, if I double-click on it, the desktop will open
The path saved in the list.

Answer 1

 import java.awt.*; import java.awt.datatransfer.*; import java.awt.dnd.*; import javax.swing.*; import javax.swing.border.LineBorder; import javax.swing.filechooser.FileSystemView; import java.io.*; import java.util.List; public class FileDropList extends JPanel implements DropTargetListener { private DefaultListModel listModel = new DefaultListModel(); private DropTarget dropTarget; private JLabel jLabel1; private JScrollPane jScrollPane1; private JList list; /** * Create the panel. */ public FileDropList() { //setLayout(null); list = new JList(); dropTarget = new DropTarget(list, this); list.setModel(listModel); list.setDragEnabled(true); FileListCellRenderer renderer = new FileListCellRenderer(); list.setCellRenderer(renderer); //list.setTransferHandler(new FileTransferHandler()); jScrollPane1 = new JScrollPane(list); //jScrollPane1.setBounds(10, 150, 635, 330); add(jScrollPane1); } public static void main(String[] args) throws Exception { Runnable r = new Runnable() { @Override public void run() { JPanel pan = new FileDropList(); pan.setBorder(new LineBorder(Color.BLACK)); JOptionPane.showMessageDialog(null, pan); } }; SwingUtilities.invokeLater(r); } public void dragEnter(DropTargetDragEvent arg0) { // nothing } public void dragOver(DropTargetDragEvent arg0) { // nothing } public void dropActionChanged(DropTargetDragEvent arg0) { // nothing } public void dragExit(DropTargetEvent arg0) { // nothing } public void drop(DropTargetDropEvent evt) { int action = evt.getDropAction(); evt.acceptDrop(action); try { Transferable data = evt.getTransferable(); if (data.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) { List<File> files = (List<File>) data.getTransferData(DataFlavor.javaFileListFlavor); for (File file : files) { listModel.addElement(file); } } } catch (UnsupportedFlavorException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { evt.dropComplete(true); } } } /** A FileListCellRenderer for a File. */ class FileListCellRenderer extends DefaultListCellRenderer { private static final long serialVersionUID = -7799441088157759804L; private FileSystemView fileSystemView; private JLabel label; private Color textSelectionColor = Color.BLACK; private Color backgroundSelectionColor = Color.CYAN; private Color textNonSelectionColor = Color.BLACK; private Color backgroundNonSelectionColor = Color.WHITE; FileListCellRenderer() { label = new JLabel(); label.setOpaque(true); fileSystemView = FileSystemView.getFileSystemView(); } @Override public Component getListCellRendererComponent( JList list, Object value, int index, boolean selected, boolean expanded) { File file = (File)value; label.setIcon(fileSystemView.getSystemIcon(file)); label.setText(fileSystemView.getSystemDisplayName(file)); label.setToolTipText(file.getPath()); if (selected) { label.setBackground(backgroundSelectionColor); label.setForeground(textSelectionColor); } else { label.setBackground(backgroundNonSelectionColor); label.setForeground(textNonSelectionColor); } return label; } } 

Original answer

 import java.awt.datatransfer.*; import java.awt.dnd.*; import javax.swing.*; import javax.swing.filechooser.FileSystemView; import java.io.*; import java.util.List; public class FileDragList extends JPanel implements DropTargetListener { private static final long serialVersionUID = 1L; private DefaultListModel listModel = new DefaultListModel(); private JScrollPane jScrollPane1; private JList list; /** * Create the panel. */ public FileDragList() { setLayout(null); list = new JList(); DropTarget dropTarget = new DropTarget(list, this); list.setModel(listModel); list.setDragEnabled(true); FileListCellRenderer renderer = new FileListCellRenderer(); list.setCellRenderer(renderer); //list.setTransferHandler(new FileTransferHandler()); jScrollPane1 = new JScrollPane(); jScrollPane1.setViewportView(list); jScrollPane1.setBounds(10, 150, 635, 330); add(jScrollPane1); } public static void main(String[] args) throws Exception { Runnable r = new Runnable() { @Override public void run() { JOptionPane.showMessageDialog(null, new FileDragList()); } }; SwingUtilities.invokeLater(r); } public void dragEnter(DropTargetDragEvent arg0) { // nothing } public void dragOver(DropTargetDragEvent arg0) { // nothing } public void dropActionChanged(DropTargetDragEvent arg0) { // nothing } public void dragExit(DropTargetEvent arg0) { // nothing } public void drop(DropTargetDropEvent evt) { int action = evt.getDropAction(); evt.acceptDrop(action); try { Transferable data = evt.getTransferable(); if (data.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) { List<File> files = (List<File>) data.getTransferData(DataFlavor.javaFileListFlavor); for (File file : files) { Icon icon=FileSystemView.getFileSystemView().getSystemIcon(file); /////////////////listModel.addElement(filepath+icon);///////////////////////want code do this } } } catch (UnsupportedFlavorException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { evt.dropComplete(true); } } } 

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 Icon icon=FileSystemView.getFileSystemView().getSystemIcon(file); 

Oh right. Try the FileTreeCellRenderer option of the File Browser GUI.

What is it used for the tree on the left.

FileTreeCellRenderer

 /** A TreeCellRenderer for a File. */ class FileTreeCellRenderer extends DefaultTreeCellRenderer { private FileSystemView fileSystemView; private JLabel label; FileTreeCellRenderer() { label = new JLabel(); label.setOpaque(true); fileSystemView = FileSystemView.getFileSystemView(); } @Override public Component getTreeCellRendererComponent( JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) { DefaultMutableTreeNode node = (DefaultMutableTreeNode)value; File file = (File)node.getUserObject(); label.setIcon(fileSystemView.getSystemIcon(file)); label.setText(fileSystemView.getSystemDisplayName(file)); label.setToolTipText(file.getPath()); if (selected) { label.setBackground(backgroundSelectionColor); label.setForeground(textSelectionColor); } else { label.setBackground(backgroundNonSelectionColor); label.setForeground(textNonSelectionColor); } return label; } } 

Update

SSCCE, which adapts the renderer above for lists.

 import java.awt.*; import javax.swing.*; import javax.swing.filechooser.FileSystemView; import java.io.File; public class FileList { public static void main(String[] args) throws Exception { Runnable r = new Runnable() { @Override public void run() { JPanel gui = new JPanel(new BorderLayout(2,2)); File userHome = new File(System.getProperty("user.home")); File[] files = userHome.listFiles(); JList list = new JList(files); list.setCellRenderer(new FileListCellRenderer()); gui.add(new JScrollPane(list)); JOptionPane.showMessageDialog(null, gui); } }; SwingUtilities.invokeLater(r); } } /** A FileListCellRenderer for a File. */ class FileListCellRenderer extends DefaultListCellRenderer { private static final long serialVersionUID = -7799441088157759804L; private FileSystemView fileSystemView; private JLabel label; private Color textSelectionColor = Color.BLACK; private Color backgroundSelectionColor = Color.CYAN; private Color textNonSelectionColor = Color.BLACK; private Color backgroundNonSelectionColor = Color.WHITE; FileListCellRenderer() { label = new JLabel(); label.setOpaque(true); fileSystemView = FileSystemView.getFileSystemView(); } @Override public Component getListCellRendererComponent( JList list, Object value, int index, boolean selected, boolean expanded) { File file = (File)value; label.setIcon(fileSystemView.getSystemIcon(file)); label.setText(fileSystemView.getSystemDisplayName(file)); label.setToolTipText(file.getPath()); if (selected) { label.setBackground(backgroundSelectionColor); label.setForeground(textSelectionColor); } else { label.setBackground(backgroundNonSelectionColor); label.setForeground(textNonSelectionColor); } return label; } }