import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.beans.*;

public class TileAction extends AbstractAction {
   private JDesktopPane desk;

  public TileAction(JDesktopPane desk) {
   super("Tile Frames");
   this.desk = desk;
  }

  public void actionPerformed(ActionEvent ev) {
   JInternalFrame[] allframes = desk.getAllFrames();
   int count = allframes.length;
   if (count==0) return;

   int sqrt = (int)Math.sqrt(count);
   int rows = sqrt;
   int cols = sqrt;
   if(rows*cols < count) {
     cols++;
     if(rows*cols < count) {
       rows++;
     }
   }

   Dimension size = desk.getSize();
   int w = size.width/cols;
   int h = size.height/rows;
   int x = 0;
   int y = 0;

   for(int i=0; i<rows; i++) {
     for(int j=0; j<cols && ((i*cols)+j<count); j++) {
       JInternalFrame f = allframes[(i*cols)+j];
       if((f.isClosed() == false) && (f.isIcon()== true)) {
	 try {
           f.setIcon(false);
	 }
         catch (PropertyVetoException ex) {}
       }

      desk.getDesktopManager().resizeFrame(f,x,y,w,h);
      x += w;
     }
    y += h;
    x=0;
   }
  }
}