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package Utilities;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.File ;
//==============================================================================
/**
*
* <b>Positionable version of JFileChooser.</b><p>
*
* (The JFileChooser position isn't set or read by setLocation(...)
* or getLocation.)<p>
*
*
*<pre>
*Dear Mr. Kimball,
*
*This is a known bug:
*
* http://developer.java.sun.com/developer/bugParade/bugs/4390885.html
*
*We are working on a solution for a later release. In the meantime, the
*only workaround I can think of is to subclass JFileChooser and override
*the method showDialog(), adding a call to setLocation().
*
*See example code below.
*
*Regards,
*
*Leif Samuelsson
*
*Sun Microsystems, Inc.
*Java Swing Team
*</pre>
*/
//==============================================================================
public class FileChooser extends JFileChooser {
private JDialog dialog;
private int returnValue = ERROR_OPTION;
private Point Location = new Point(250, 250) ;
private Dimension Size = new Dimension( 600, 250) ;
//------------------------------------------------------------------------------
/**
*
* Constructor is the same as the no-argument version of JFileChooser.<p>
*
* Use setCurrentDirectory to set the initial directory.
*
*/
public FileChooser(){
super() ;
}
//------------------------------------------------------------------------------\/**
/** Replaces showDialog of JFileChooser */
public int showDialog(Component parent, String approveButtonText) {
if (approveButtonText != null) {
setApproveButtonText(approveButtonText);
setDialogType(CUSTOM_DIALOG);
}
Frame frame = parent instanceof Frame ? (Frame) parent
: (Frame)SwingUtilities.getAncestorOfClass(Frame.class, parent);
String title = getUI().getDialogTitle(this);
dialog = new JDialog(frame, title, true);
dialog.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
returnValue = CANCEL_OPTION;
}
});
dialog.getContentPane().add(this, BorderLayout.CENTER);
dialog.pack();
dialog.setLocation(Location) ;
dialog.setSize(Size) ;
rescanCurrentDirectory();
returnValue = ERROR_OPTION;
dialog.show();
Location = dialog.getLocation() ;
Size = dialog.getSize() ;
return returnValue;
}
//------------------------------------------------------------------------------\/**
/** Replaces approveSelection of JFileChooser */
public void approveSelection() {
returnValue = APPROVE_OPTION;
if (dialog != null) {
dialog.setVisible(false);
}
super.approveSelection();
}
//------------------------------------------------------------------------------\/**
/** Replaces cancelSelection of JFileChooser */
public void cancelSelection() {
returnValue = CANCEL_OPTION;
if (dialog != null) {
dialog.setVisible(false);
}
super.cancelSelection();
}
//------------------------------------------------------------------------------\/**
/** Sets the location of the FileChooser */
public void setLocation(Point P) {
this.Location = P ;
}
//------------------------------------------------------------------------------\/**
/** Sets the size of the FileChooser */
public void setSize(Dimension D) {
this.Size = D ;
}
//------------------------------------------------------------------------------\/**
/** Returns the location of the FileChooser */
public Point getLocation() {
return Location ;
}
//------------------------------------------------------------------------------\/**
/** Returns the size of the FileChooser */
public Dimension getSize() {
return Size ;
}
//------------------------------------------------------------------------------\/**
/** Test program provided by Leif Samuelsson */
public static void main(String[] s) throws Exception {
JFrame frame = new JFrame("FileChooser test");
frame.setVisible(true);
JFileChooser chooser = new FileChooser();
chooser.setLocation(new Point(200,200)) ;
int returnVal = chooser.showOpenDialog(frame);
System.out.println("Position: " + chooser.getLocation()) ;
switch (returnVal) {
case APPROVE_OPTION:
System.out.println("You chose to open this file: " + chooser.getSelectedFile().getName());
break;
case CANCEL_OPTION:
System.out.println("Cancelled");
break;
case ERROR_OPTION:
System.out.println("An error occurred");
break;
}
System.exit(0);
}
}
//==============================================================================
|
