FileBro は、基本的なGUIベースのファイルブラウザです。
FileBro機能
- ディレクトリツリー-起動時にファイルシステムのルートを表示しますが、それ以外の場合は、ユーザーがファイルシステムを参照するときに遅延して構築されます。 FileBro は、新しいエントリを読み込んでいるときに進行状況バーを表示します。
- ファイルリスト（表）には、現在のディレクトリツリー選択内のディレクトリとファイルのリストが表示されます。列ヘッダーをクリックして並べ替えます。
- ボタン-すべての機能に
Desktopクラスを使用します。アクションを完了できない場合は、JEditorPaneエラーメッセージに意味のある理由を表示する必要があります。-
Locate-現在選択されているファイルの親ディレクトリを開きます。 -
Open-そのファイルタイプのデフォルトのコンシューマであるアプリケーションを起動します。 -
Edit-デフォルトのコンシューマで編集用にファイルを開きます。 -
Print-デフォルトのコンシューマーを使用してファイルを印刷します。
-
- 選択したファイルの詳細がボタンの下に表示されます。
現在の機能は上記の説明どおりに機能しますか？
FileBrowser.java
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.Container;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import javax.swing.table.*;
import javax.swing.filechooser.FileSystemView;
import javax.imageio.ImageIO;
import java.util.Date;
import java.util.List;
import java.util.ArrayList;
import java.io.*;
import java.nio.channels.FileChannel;
import java.net.URL;
/**
A basic File Browser. Requires 1.6+ for the Desktop & SwingWorker
classes, amongst other minor things.
Includes support classes FileTableModel & FileTreeCellRenderer.
@TODO Bugs
<li>Fix keyboard focus issues - especially when functions like
rename/delete etc. are called that update nodes & file lists.
<li>Needs more testing in general.
@TODO Functionality
<li>Double clicking a directory in the table, should update the tree
<li>Move progress bar?
<li>Add other file display modes (besides table) in CardLayout?
<li>Menus + other cruft?
<li>Implement history/back
<li>Allow multiple selection
<li>Add file search
@author Andrew Thompson
@version 2011-06-08
@see http://codereview.stackexchange.com/q/4446/7784
@license LGPL
*/
class FileBrowser {
/** Title of the application */
public static final String APP_TITLE = "FileBro";
/** Used to open/edit/print files. */
private Desktop desktop;
/** Provides nice icons and names for files. */
private FileSystemView fileSystemView;
/** currently selected File. */
private File currentFile;
/** Main GUI container */
private JPanel gui;
/** File-system tree. Built Lazily */
private JTree tree;
private DefaultTreeModel treeModel;
/** Directory listing */
private JTable table;
private JProgressBar progressBar;
/** Table model for File[]. */
private FileTableModel fileTableModel;
private ListSelectionListener listSelectionListener;
private boolean cellSizesSet = false;
private int rowIconPadding = 6;
/* File controls. */
private JButton openFile;
private JButton printFile;
private JButton editFile;
/* File details. */
private JLabel fileName;
private JTextField path;
private JLabel date;
private JLabel size;
private JCheckBox readable;
private JCheckBox writable;
private JCheckBox executable;
private JRadioButton isDirectory;
private JRadioButton isFile;
/* GUI options/containers for new File/Directory creation. Created lazily. */
private JPanel newFilePanel;
private JRadioButton newTypeFile;
private JTextField name;
public Container getGui() {
if (gui==null) {
gui = new JPanel(new BorderLayout(3,3));
gui.setBorder(new EmptyBorder(5,5,5,5));
fileSystemView = FileSystemView.getFileSystemView();
desktop = Desktop.getDesktop();
JPanel detailView = new JPanel(new BorderLayout(3,3));
table = new JTable();
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
table.setAutoCreateRowSorter(true);
table.setShowVerticalLines(false);
listSelectionListener = new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent lse) {
int row = table.getSelectionModel().getLeadSelectionIndex();
setFileDetails( ((FileTableModel)table.getModel()).getFile(row) );
}
};
table.getSelectionModel().addListSelectionListener(listSelectionListener);
JScrollPane tableScroll = new JScrollPane(table);
Dimension d = tableScroll.getPreferredSize();
tableScroll.setPreferredSize(new Dimension((int)d.getWidth(), (int)d.getHeight()/2));
detailView.add(tableScroll, BorderLayout.CENTER);
// the File tree
DefaultMutableTreeNode root = new DefaultMutableTreeNode();
treeModel = new DefaultTreeModel(root);
TreeSelectionListener treeSelectionListener = new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent tse){
DefaultMutableTreeNode node =
(DefaultMutableTreeNode)tse.getPath().getLastPathComponent();
showChildren(node);
setFileDetails((File)node.getUserObject());
}
};
// show the file system roots.
File[] roots = fileSystemView.getRoots();
for (File fileSystemRoot : roots) {
DefaultMutableTreeNode node = new DefaultMutableTreeNode(fileSystemRoot);
root.add( node );
File[] files = fileSystemView.getFiles(fileSystemRoot, true);
for (File file : files) {
if (file.isDirectory()) {
node.add(new DefaultMutableTreeNode(file));
}
}
//
}
tree = new JTree(treeModel);
tree.setRootVisible(false);
tree.addTreeSelectionListener(treeSelectionListener);
tree.setCellRenderer(new FileTreeCellRenderer());
tree.expandRow(0);
JScrollPane treeScroll = new JScrollPane(tree);
// as per trashgod tip
tree.setVisibleRowCount(15);
Dimension preferredSize = treeScroll.getPreferredSize();
Dimension widePreferred = new Dimension(
200,
(int)preferredSize.getHeight());
treeScroll.setPreferredSize( widePreferred );
// details for a File
JPanel fileMainDetails = new JPanel(new BorderLayout(4,2));
fileMainDetails.setBorder(new EmptyBorder(0,6,0,6));
JPanel fileDetailsLabels = new JPanel(new GridLayout(0,1,2,2));
fileMainDetails.add(fileDetailsLabels, BorderLayout.WEST);
JPanel fileDetailsValues = new JPanel(new GridLayout(0,1,2,2));
fileMainDetails.add(fileDetailsValues, BorderLayout.CENTER);
fileDetailsLabels.add(new JLabel("File", JLabel.TRAILING));
fileName = new JLabel();
fileDetailsValues.add(fileName);
fileDetailsLabels.add(new JLabel("Path/name", JLabel.TRAILING));
path = new JTextField(5);
path.setEditable(false);
fileDetailsValues.add(path);
fileDetailsLabels.add(new JLabel("Last Modified", JLabel.TRAILING));
date = new JLabel();
fileDetailsValues.add(date);
fileDetailsLabels.add(new JLabel("File size", JLabel.TRAILING));
size = new JLabel();
fileDetailsValues.add(size);
fileDetailsLabels.add(new JLabel("Type", JLabel.TRAILING));
JPanel flags = new JPanel(new FlowLayout(FlowLayout.LEADING,4,0));
isDirectory = new JRadioButton("Directory");
flags.add(isDirectory);
isFile = new JRadioButton("File");
flags.add(isFile);
fileDetailsValues.add(flags);
JToolBar toolBar = new JToolBar();
// mnemonics stop working in a floated toolbar
toolBar.setFloatable(false);
JButton locateFile = new JButton("Locate");
locateFile.setMnemonic('l');
locateFile.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae) {
try {
System.out.println("Locate: " + currentFile.getParentFile());
desktop.open(currentFile.getParentFile());
} catch(Throwable t) {
showThrowable(t);
}
gui.repaint();
}
});
toolBar.add(locateFile);
openFile = new JButton("Open");
openFile.setMnemonic('o');
openFile.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae) {
try {
System.out.println("Open: " + currentFile);
desktop.open(currentFile);
} catch(Throwable t) {
showThrowable(t);
}
gui.repaint();
}
});
toolBar.add(openFile);
editFile = new JButton("Edit");
editFile.setMnemonic('e');
editFile.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae) {
try {
desktop.edit(currentFile);
} catch(Throwable t) {
showThrowable(t);
}
}
});
toolBar.add(editFile);
printFile = new JButton("Print");
printFile.setMnemonic('p');
printFile.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae) {
try {
desktop.print(currentFile);
} catch(Throwable t) {
showThrowable(t);
}
}
});
toolBar.add(printFile);
// Check the actions are supported on this platform!
openFile.setEnabled(desktop.isSupported(Desktop.Action.OPEN));
editFile.setEnabled(desktop.isSupported(Desktop.Action.EDIT));
printFile.setEnabled(desktop.isSupported(Desktop.Action.PRINT));
flags.add(new JLabel(":: Flags"));
readable = new JCheckBox("Read ");
readable.setMnemonic('a');
flags.add(readable);
writable = new JCheckBox("Write ");
writable.setMnemonic('w');
flags.add(writable);
executable = new JCheckBox("Execute");
executable.setMnemonic('x');
flags.add(executable);
int count = fileDetailsLabels.getComponentCount();
for (int ii=0; ii<count; ii++) {
fileDetailsLabels.getComponent(ii).setEnabled(false);
}
count = flags.getComponentCount();
for (int ii=0; ii<count; ii++) {
flags.getComponent(ii).setEnabled(false);
}
JPanel fileView = new JPanel(new BorderLayout(3,3));
fileView.add(toolBar,BorderLayout.NORTH);
fileView.add(fileMainDetails,BorderLayout.CENTER);
detailView.add(fileView, BorderLayout.SOUTH);
JSplitPane splitPane = new JSplitPane(
JSplitPane.HORIZONTAL_SPLIT,
treeScroll,
detailView);
gui.add(splitPane, BorderLayout.CENTER);
JPanel simpleOutput = new JPanel(new BorderLayout(3,3));
progressBar = new JProgressBar();
simpleOutput.add(progressBar, BorderLayout.EAST);
progressBar.setVisible(false);
gui.add(simpleOutput, BorderLayout.SOUTH);
}
return gui;
}
public void showRootFile() {
// ensure the main files are displayed
tree.setSelectionInterval(0,0);
}
private TreePath findTreePath(File find) {
for (int ii=0; ii<tree.getRowCount(); ii++) {
TreePath treePath = tree.getPathForRow(ii);
Object object = treePath.getLastPathComponent();
DefaultMutableTreeNode node = (DefaultMutableTreeNode)object;
File nodeFile = (File)node.getUserObject();
if (nodeFile==find) {
return treePath;
}
}
// not found!
return null;
}
private void showErrorMessage(String errorMessage, String errorTitle) {
JOptionPane.showMessageDialog(
gui,
errorMessage,
errorTitle,
JOptionPane.ERROR_MESSAGE
);
}
private void showThrowable(Throwable t) {
t.printStackTrace();
JOptionPane.showMessageDialog(
gui,
t.toString(),
t.getMessage(),
JOptionPane.ERROR_MESSAGE
);
gui.repaint();
}
/** Update the table on the EDT */
private void setTableData(final File[] files) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
if (fileTableModel==null) {
fileTableModel = new FileTableModel();
table.setModel(fileTableModel);
}
table.getSelectionModel().removeListSelectionListener(listSelectionListener);
fileTableModel.setFiles(files);
table.getSelectionModel().addListSelectionListener(listSelectionListener);
if (!cellSizesSet) {
Icon icon = fileSystemView.getSystemIcon(files[0]);
// size adjustment to better account for icons
table.setRowHeight( icon.getIconHeight()+rowIconPadding );
setColumnWidth(0,-1);
setColumnWidth(3,60);
table.getColumnModel().getColumn(3).setMaxWidth(120);
setColumnWidth(4,-1);
setColumnWidth(5,-1);
setColumnWidth(6,-1);
setColumnWidth(7,-1);
setColumnWidth(8,-1);
setColumnWidth(9,-1);
cellSizesSet = true;
}
}
});
}
private void setColumnWidth(int column, int width) {
TableColumn tableColumn = table.getColumnModel().getColumn(column);
if (width<0) {
// use the preferred width of the header..
JLabel label = new JLabel( (String)tableColumn.getHeaderValue() );
Dimension preferred = label.getPreferredSize();
// altered 10->14 as per camickr comment.
width = (int)preferred.getWidth()+14;
}
tableColumn.setPreferredWidth(width);
tableColumn.setMaxWidth(width);
tableColumn.setMinWidth(width);
}
/** Add the files that are contained within the directory of this node.
Thanks to Hovercraft Full Of Eels for the SwingWorker fix. */
private void showChildren(final DefaultMutableTreeNode node) {
tree.setEnabled(false);
progressBar.setVisible(true);
progressBar.setIndeterminate(true);
SwingWorker<Void, File> worker = new SwingWorker<Void, File>() {
@Override
public Void doInBackground() {
File file = (File) node.getUserObject();
if (file.isDirectory()) {
File[] files = fileSystemView.getFiles(file, true); //!!
if (node.isLeaf()) {
for (File child : files) {
if (child.isDirectory()) {
publish(child);
}
}
}
setTableData(files);
}
return null;
}
@Override
protected void process(List<File> chunks) {
for (File child : chunks) {
node.add(new DefaultMutableTreeNode(child));
}
}
@Override
protected void done() {
progressBar.setIndeterminate(false);
progressBar.setVisible(false);
tree.setEnabled(true);
}
};
worker.execute();
}
/** Update the File details view with the details of this File. */
private void setFileDetails(File file) {
currentFile = file;
Icon icon = fileSystemView.getSystemIcon(file);
fileName.setIcon(icon);
fileName.setText(fileSystemView.getSystemDisplayName(file));
path.setText(file.getPath());
date.setText(new Date(file.lastModified()).toString());
size.setText(file.length() + " bytes");
readable.setSelected(file.canRead());
writable.setSelected(file.canWrite());
executable.setSelected(file.canExecute());
isDirectory.setSelected(file.isDirectory());
isFile.setSelected(file.isFile());
JFrame f = (JFrame)gui.getTopLevelAncestor();
if (f!=null) {
f.setTitle(
APP_TITLE +
" :: " +
fileSystemView.getSystemDisplayName(file) );
}
gui.repaint();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
try {
// Significantly improves the look of the output in
// terms of the file names returned by FileSystemView!
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch(Exception weTried) {
}
JFrame f = new JFrame(APP_TITLE);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
FileBrowser FileBrowser = new FileBrowser();
f.setContentPane(FileBrowser.getGui());
try {
URL urlBig = FileBrowser.getClass().getResource("fb-icon-32x32.png");
URL urlSmall = FileBrowser.getClass().getResource("fb-icon-16x16.png");
ArrayList<Image> images = new ArrayList<Image>();
images.add( ImageIO.read(urlBig) );
images.add( ImageIO.read(urlSmall) );
f.setIconImages(images);
} catch(Exception weTried) {}
f.pack();
f.setLocationByPlatform(true);
f.setMinimumSize(f.getSize());
f.setVisible(true);
FileBrowser.showRootFile();
}
});
}
}
/** A TableModel to hold File[]. */
class FileTableModel extends AbstractTableModel {
private File[] files;
private FileSystemView fileSystemView = FileSystemView.getFileSystemView();
private String[] columns = {
"Icon",
"File",
"Path/name",
"Size",
"Last Modified",
"R",
"W",
"E",
"D",
"F",
};
FileTableModel() {
this(new File[0]);
}
FileTableModel(File[] files) {
this.files = files;
}
public Object getValueAt(int row, int column) {
File file = files[row];
switch (column) {
case 0:
return fileSystemView.getSystemIcon(file);
case 1:
return fileSystemView.getSystemDisplayName(file);
case 2:
return file.getPath();
case 3:
return file.length();
case 4:
return file.lastModified();
case 5:
return file.canRead();
case 6:
return file.canWrite();
case 7:
return file.canExecute();
case 8:
return file.isDirectory();
case 9:
return file.isFile();
default:
System.err.println("Logic Error");
}
return "";
}
public int getColumnCount() {
return columns.length;
}
public Class<?> getColumnClass(int column) {
switch (column) {
case 0:
return ImageIcon.class;
case 3:
return Long.class;
case 4:
return Date.class;
case 5:
case 6:
case 7:
case 8:
case 9:
return Boolean.class;
}
return String.class;
}
public String getColumnName(int column) {
return columns[column];
}
public int getRowCount() {
return files.length;
}
public File getFile(int row) {
return files[row];
}
public void setFiles(File[] files) {
this.files = files;
fireTableDataChanged();
}
}
/** 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;
}
}
FileBrowser.javaのソースコードは約650行です。
また
- アプリのアイコンは2つあります。（ただし、それらがなくても正常に実行されます）。クラスと同じディレクトリにある場合は、それらが使用されます。アイコンは
Color.WHITEを使用して、選択されていないテーブル行とツリーノードを表します。そのため、アイコンは白い背景のWebページでは非表示になります。;）-
fb-icon-16x16.png
-
fb-icon-32x32.png
-
- その他のコメント/ヒント/提案は大歓迎です。
