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   package org.xpcards.components;
   
   import java.text.DateFormat;
   import java.text.ParseException;
   import java.util.Date;
   
   import org.eclipse.swt.SWT;
   import org.eclipse.swt.events.ControlAdapter;
   import org.eclipse.swt.events.ControlEvent;
  import org.eclipse.swt.events.DisposeEvent;
  import org.eclipse.swt.events.DisposeListener;
  import org.eclipse.swt.events.FocusAdapter;
  import org.eclipse.swt.events.FocusEvent;
  import org.eclipse.swt.events.KeyAdapter;
  import org.eclipse.swt.events.KeyEvent;
  import org.eclipse.swt.graphics.Point;
  import org.eclipse.swt.layout.FillLayout;
  import org.eclipse.swt.widgets.Composite;
  import org.eclipse.swt.widgets.Display;
  import org.eclipse.swt.widgets.Shell;
  import org.eclipse.swt.widgets.Text;
  
  public class DatePicker extends Composite {
  
  	private DateFormat defaultDateFormat = null;
  	// private Calendar calendar = null;
  	private Text text = null;
  	private DateFormat dateFormat = null;
  	private Date date = null; 
  
  	public DatePicker(Composite parent, int style) {
  		super(parent, style & ( SWT.READ_ONLY | SWT.FLAT ) );
  		
  		int textStyle = SWT.NONE;
  		textStyle |= SWT.BORDER & style;  
  		
  		text = new Text(this, textStyle );
  
  		text.addKeyListener(new KeyAdapter() {
  
  			public void keyReleased(KeyEvent e) {
  //				System.err.println("Key pressed:" + e.keyCode); 
  				if (e.keyCode == 27) {
  					// ESC Key
  					cancelled();
  				} else if (e.keyCode == 13) {
  					// OK Key
  					approved();
  				}
  			}
  		});
  
  		text.addFocusListener(new FocusAdapter() {
  			public void focusGained(FocusEvent e) {
  				text.setFocus();
  			}
  			/* (non-Javadoc)
  			 * @see org.eclipse.swt.events.FocusAdapter#focusLost(org.eclipse.swt.events.FocusEvent)
  			 */
  			public void focusLost(FocusEvent e) {
  				cancelled();
  			}
  
  		});
  
  		addControlListener(new ControlAdapter() {
  			public void controlResized(ControlEvent e) {
  				DatePicker.this.controlResized(e);
  			}
  
  		});
  
  	}
  
  	private void controlResized(ControlEvent e) {
  		Point tExtent = text.computeSize(SWT.DEFAULT, SWT.DEFAULT, false);
  		text.setBounds(0, 0, tExtent.x, tExtent.y);
  	}
  
  	private void approved() {
  		// System.err.println("Approved");
  		if ( text.getText().length() == 0 ) {
  			setDate(null);
  			return;
  		}
  		DateFormat df = getDateFormat();
  		if (df == null) {
  			if (defaultDateFormat == null) {
  				defaultDateFormat =
  					DateFormat.getDateInstance(DateFormat.SHORT);
  			}
  			df = defaultDateFormat;
  		}
  		try {			
  			Date dt = df.parse(text.getText());
  //			System.err.println("Set date:" + dt); 
  			setDate(dt);
  		} catch (ParseException e) {
  			resetText();
 		}
 	}
 
 	private void cancelled() {
 		resetText();
 	}
 
 //	public Calendar getCalendar() {
 //		if ( calendar == null ) {
 //			calendar = new GregorianCalendar();
 //		}
 //		return calendar;
 //	}
 
 //	public void setCalendar(Calendar calendar) {
 //		if (this.calendar != null) {
 //			Date dt = getDate();
 //			this.calendar = calendar;
 //			if (dt != null) {
 //				this.calendar.setTime(dt);
 //			}
 //		} else {
 //			this.calendar = calendar;
 //		}
 //		resetText(getDate());
 //	}
 
 	public void setDate(Date date) {
 		this.date = date; 
 //		if (date != null && getCalendar() != null) {
 //			getCalendar().setTime(date);
 //		}		
 		resetText();
 	}
 
 	private void resetText() {
 		if (date == null) {
 			text.setText("");
 		} else {
 			DateFormat df = getDateFormat();
 			if (df == null) {
 				if (defaultDateFormat == null) {
 					defaultDateFormat =
 						DateFormat.getDateInstance(DateFormat.SHORT);
 				}
 				df = defaultDateFormat;
 			}
 			text.setText(df.format(date));
 		}
 	}
 
 	public Point computeSize(int wHint, int hHint, boolean changed) {
 
 		Point tExtent = text.computeSize(SWT.DEFAULT, SWT.DEFAULT, false);
 		int width = tExtent.x;
 		int height = tExtent.y;
 
 		if (wHint != SWT.DEFAULT)
 			width = wHint;
 
 		if (hHint != SWT.DEFAULT)
 			height = hHint;
 
 		return new Point(width, height);
 	}
 
 	public Date getDate() {
 		return date;
 	}
 
 	/***
 	 * @return
 	 */
 	public DateFormat getDateFormat() {
 		return dateFormat;
 	}
 
 	/***
 	 * @param format
 	 */
 	public void setDateFormat(DateFormat format) {
 		if (this.dateFormat != format) {
 			dateFormat = format;
 			resetText();
 		}
 	}
 
 	public static void main(String[] args) {
 		Display display = new Display();
 		Shell shell = new Shell(display);
 		shell.setLayout(new FillLayout());
 
 		final DatePicker cal = new DatePicker(shell, SWT.NONE);
 		cal.setDate(new Date());
 
 		cal.addDisposeListener(new DisposeListener() {
 			public void widgetDisposed(DisposeEvent e) {
 				System.err.println("Date selected 1" + cal.getDate());
 			}
 		});
 
 		final DatePicker cal1 = new DatePicker(shell, SWT.BORDER);
 		cal1.setDate(new Date());
 
 		cal1.addDisposeListener(new DisposeListener() {
 			public void widgetDisposed(DisposeEvent e) {
 				System.err.println("Date selected 2" + cal1.getDate());
 			}
 		});
 
 
 		shell.pack();
 		shell.open();
 		while (!shell.isDisposed()) {
 			if (!display.readAndDispatch())
 				display.sleep();
 		}
 
 	}
 
 }