/*
????Copyright?(c)?2006?NEC?AeroSpace?Systems,?Ltd.??All?Rights?Reserved
 */

import ?java.awt.BorderLayout;
 import ?java.awt.Color;
 import ?java.awt.Component;
 import ?java.awt.Dimension;
 import ?java.awt.FlowLayout;
 import ?java.awt.Frame;
 import ?java.awt.Toolkit;
 import ?java.awt.event.ActionEvent;
 import ?java.awt.event.ActionListener;
 import ?java.awt.event.MouseAdapter;
 import ?java.awt.event.MouseEvent;
 import ?java.io.File;
 import ?java.io.IOException;

 import ?javax.swing.BorderFactory;
 import ?javax.swing.JButton;
 import ?javax.swing.JDialog;
 import ?javax.swing.JLabel;
 import ?javax.swing.JPanel;
 import ?javax.swing.JScrollPane;
 import ?javax.swing.JTree;
 import ?javax.swing.border.Border;
 import ?javax.swing.event.TreeExpansionEvent;
 import ?javax.swing.event.TreeExpansionListener;
 import ?javax.swing.filechooser.FileSystemView;
 import ?javax.swing.tree.DefaultMutableTreeNode;
 import ?javax.swing.tree.DefaultTreeModel;
 import ?javax.swing.tree.TreePath;
 import ?javax.swing.tree.TreeSelectionModel;

 /**
?*?<p>Used?for?select?a?folder?from?system.</p>
?*
?*? @author ?wt
?*? @version ?0.01
? */
public ? class ?FolderSelectDialog? extends ?JDialog? {
????
???? private ? static ? final ? long ?serialVersionUID? = ? 3281508190777386340L ;
????
 // ????private?Frame?owner_;
???? private ? boolean ?isOKClick_? = ? false ;
???? private ?String?filepath_? = ? "" ;
???? private ?JLabel?path_? = ? new ?JLabel( " ? " );????????????
???? private ?JTree?tree_;
???? private ?Border?border_? = ?BorderFactory.createEtchedBorder(Color.white,? new ?Color( 148 ,? 145 ,? 140 ));
????
???? /**
?????*?<p>?弶婜壔梡儊僜僢僪.?</p>
?????*? @param ?owner?This?dialog's?parent?Frame.
????? */
???? public ?FolderSelectDialog(Frame?owner,?String?title)? {?
???????? super (owner,? true );
 // ????????owner_?=?owner;
????????setTitle(title);
????????init();
????????setToScreenCenter( this );
????????setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
????}
????
???? private ? void ?init()? {
????????isOKClick_? = ? false ;
????????JPanel?labelPanel? = ? new ?JPanel( new ?FlowLayout(FlowLayout.LEFT));
????????labelPanel.setSize( 300 ,? 40 );
????????JPanel?buttonPanel? = ? new ?JPanel( new ?FlowLayout(FlowLayout.RIGHT));
????????JLabel?current? = ? new ?JLabel( " Current?Selection " );
????????labelPanel.setLayout( new ?BorderLayout());
????????labelPanel.add(current,?BorderLayout.NORTH);
????????labelPanel.add(path_,?BorderLayout.SOUTH);

????????File[]?roots? = ?( new ?PFileSystemView()).getRoots();
????????FileNode?nod? = ? new ?FileNode?(roots[ 0 ]);
????????nod.explore();
????????tree_? = ? new ?JTree( new ?DefaultTreeModel(nod));
????????tree_.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);?

????????JScrollPane?sp? = ? new ?JScrollPane(tree_);
????????sp.setBorder(border_);
????????
????????labelPanel.setBorder(BorderFactory.createEmptyBorder( 0 ,? 19 ,? 0 ,? 0 ));
????????JButton?buttonOK? = ? new ?JButton( " OK " );
????????buttonOK.setPreferredSize( new ?Dimension( 70 ,? 25 ));
????????JButton?buttonCanel? = ? new ?JButton( " Canel " );
????????buttonCanel.setPreferredSize( new ?Dimension( 70 ,? 25 ));
????????buttonPanel.add(buttonOK);
????????buttonPanel.add(buttonCanel);
????????????
???????? // canel?action
????????buttonCanel.addActionListener( new ?ActionListener()? {
???????????? public ? void ?actionPerformed(ActionEvent?e)? {
????????????????isOKClick_? = ? false ;
????????????????FolderSelectDialog. this .hide();
????????????}
????????} );????????
???????? // ok?action
????????buttonOK.addActionListener( new ?ActionListener()? {
???????????? public ? void ?actionPerformed(ActionEvent?e)? {
????????????????isOKClick_? = ? true ;
????????????????FolderSelectDialog. this .hide();
????????????}
????????} );
????????tree_.setShowsRootHandles( true );
????????tree_.addTreeExpansionListener( new ?TreeExpansionListener()? {
???????????? public ? void ?treeCollapsed(TreeExpansionEvent?e)? {
????????????????
????????????}
???????????? public ? void ?treeExpanded?(TreeExpansionEvent?e)? {
????????????????TreePath?path? = ?e.getPath();
????????????????FileNode?node? = ?(FileNode)path.getLastPathComponent();
???????????????? if ?( ! node.isExplored())? {
????????????????????DefaultTreeModel?model? = ?(
????????????????????(DefaultTreeModel)?tree_.getModel());
????????????????????node.explore();
????????????????????model.nodeStructureChanged(node);
????????????????}
????????????} ???????????????
????????} );
????????tree_.addMouseListener( new ?MouseAdapter()? {
???????????? public ? void ?mousePressed(MouseEvent?e)? {
????????????????JTree?tree? = ?(JTree)e.getSource();
???????????????? int ?row? = ?tree.getRowForLocation(e.getX(),?e.getY());
???????????????? if ?(row? == ? - 1 )? {
???????????????????? return ;
????????????????}
????????????????TreePath?path? = ?tree.getPathForRow(row);
???????????????? if ?(path? == ? null )? {
???????????????????? return ;
????????????????}
????????????????FileNode?node? = ?(FileNode)path.getLastPathComponent();
???????????????? if ?(node? == ? null )? {
???????????????????? return ;
????????????????}
????????????????filepath_? = ?node.getString();
????????????????path_.setText(filepath_);
????????????}
????????} );????????
????????getContentPane().add(sp,?BorderLayout.CENTER);
????????getContentPane().add(labelPanel,?BorderLayout.NORTH);
????????getContentPane().add(buttonPanel,?BorderLayout.SOUTH);
????????setSize( 350 ,? 400 );
???????? this .setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
????}
????
???? public ? boolean ?isOKClick()? {
???????? return ?isOKClick_;
????}
???? /**
?????*?<p>When?user?click?'OK'?Button,?use?this?method?to?get?user?selected?path.</p>
?????*? @return ?User?selected?folder?path.
????? */
???? public ?String?getSelectPath()? {
???????? return ?filepath_;
????}
????
???? public ? void ?setToScreenCenter(Component?component)? {
????????Toolkit?kit? = ?Toolkit.getDefaultToolkit();
????????Dimension?screenSize? = ?kit.getScreenSize();
???????? int ?screenHeight? = ?screenSize.height;
???????? int ?screenWidth?? = ?screenSize.width;
????????component.setLocation((screenWidth? - ?component.getWidth())? / ? 2 ,?(screenHeight? - ?component.getHeight())? / ? 2 );
????}
????
???? class ?FileNode? extends ?DefaultMutableTreeNode? {

???????? private ? static ? final ? long ?serialVersionUID? = ? - 6700441318091474795L ;
???????? private ? boolean ?explored_? = ? false ;
????
???????? public ?FileNode(File?file)? {
????????????setUserObject?(file);
????????}
???????? public ? boolean ?getAllowChildren()? {
???????????? return ?isDirectory();
????????}
???????? public ? boolean ?isLeaf()? {
???????????? return ? ! isDirectory();
????????}

???????? public ?File?getFile()? {
???????????? return ?(File)getUserObject();
????????}
???????? public ? boolean ?isExplored()? {
???????????? return ?explored_;
????????}
???????? public ? boolean ?isDirectory()? {
????????????File?file? = ?getFile();
???????????? return ?file.isDirectory();
????????}
???????? public ?String?toString()? {
????????????File?file? = ?getFile?();
????????????String?filename? = ?file.toString();
???????????? int ?index? = ?filename.lastIndexOf( " \\ " );
???????????? return ?(index? != ? - 1 ? && ?index? != ?filename.length()? - ? 1 )? ?
????????????????????????????????????????filename.substring(index? + ? 1 )?:
????????????????????????????????????????filename;
????????}
???????? public ?String?getString()? {
????????????File?file? = ?getFile?();
????????????String?filename? = ?file.getAbsolutePath();
???????????? return ?filename;
????????}
???????? public ? void ?explore()? {
???????????? if ?( ! isDirectory())? {
???????????????? return ;????
????????????} ????????
???????????? if ?( ! isExplored())? {
????????????????File?file? = ?getFile?();
????????????????File?[]?children? = ?file.listFiles();
???????????????? for ?( int ?i? = ? 0 ;?i? < ?children.length;? ++ i)? {
???????????????????? if ?(children[i].isDirectory())? {
????????????????????????add( new ?FileNode?(children[i]));
????????????????????}
????????????????} ?
????????????????explored_? = ? true ;
????????????}
????????} ?
????}
????
???? /**
?????*?<p>Implement?the?abstact?class?FileSystemView.</p>
?????*? @author ?wangtong
????? */
???? class ?PFileSystemView? extends ?FileSystemView? {
???????? public ?File?createNewFolder(File?containingDir)? throws ?IOException? {
???????????? return ? null ;
????????}
????}
????
 // ????public?static?void?main(String[]?args)?{
 // ????????JFrame?f?=?new?JFrame("test");
 // ????????JButton?bt?=?new?JButton("Check");
 // ????????bt.addActionListener(new?ActionListener()?{
 // ????????????public?void?actionPerformed(ActionEvent?e)?{
 // ????????????????FolderSelectDialog?d?=?new?FolderSelectDialog(
 // ????????????????????????(JFrame)?SwingUtilities.getWindowAncestor((JButton)?e
 // ????????????????????????????????.getSource()),?"FOLDER");
 // ????????????????d.show();
 // ????????????????if?(d.isOKClick())?{
 // ????????????????????System.out.println(d.getSelectPath());
 // ????????????????}
 // ????????????}
 // ????????});
 // ????????f.setContentPane(bt);
 // ????????f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
 // ????????f.show();
 // ????????f.pack();
 // ????}
}