Name: gvC48267			Date: 12/05/97


Oracle Licensee

On Win32, a modal dialog grabs input from all the existing frames of the       
underlying application. On Solaris, a modal dialog grabs input only from       
the parent frame. The JDK spec is pretty vague on wording what modality        
means and how it should be implemented. Test case to reproduce the bug is      
attached.                                                                      
/*                                                                             
 * ModalBug.java                                                               
 *   Test case to reproduce inconsistent modality implementation bug.          
 * Description                                                                 
 *   The AWT definition of setting "modal" flag to true in java.awt.Dialog     
 *   is as follows :                                                           
 *      A modal Dialog grabs all the input to the parent frame from the user.  
 *   The JavaSoft's implementation on Win32 grabs input from all the frames    
 *   and not just the parent frame in the application. However, the            
 *   implementation on Solaris only grabs the input from the parent window.    
 *   One of the implementations needs to be changed for consistency.           
 * How to reproduce :                                                          
 *   - Compile ModalBug.java and run it                                        
 *   - you will see two windows, Parent and Frame1                             
 *   - click on "show dialog" button in Parent (Parent is dialog's parent)     
 *   - this will bring up a modal dialog called "Dialog"                       
 *   - On Win32, you won't be able to access Parent and Frame1 frames.         
 *     On Solaris, you will be able to access Frame1.                          
 * Author Sridhar Reddy (###@###.###), 12/3/1997                     
 */                                                           
import java.awt.Dialog;                                                        
import java.awt.Frame;                                                         
import java.awt.Button;                                                        
import java.awt.event.ActionEvent;                                             
import java.awt.event.ActionListener;                                          
public class  ModalBug implements ActionListener                               
{                                                                              
  Frame parent;   // parent frame                                              
  Frame frame;    // some frame                                                
  Dialog dialog;  // a modal dialog                                            
  Button showDialog;  // button to popup modal dialog                          
  Button printHello;  // button to print hello to stdout                       
  // constructor - creates two frames and a modal dialog                       
  public ModalBug()                                                            
  {                                                                            
    parent = new Frame("Parent");                                              
    showDialog = new Button("show dialog");                                    
    showDialog.addActionListener(this);                                        
    parent.add(showDialog);                                                    
    parent.setSize(100, 100);                                                  
    parent.setLocation(1,1);                                                   
    dialog = new Dialog(parent, "Dialog", true);                               
    dialog.setSize(100, 100);                                                  
    dialog.setLocation(250, 150);                                              
    frame = new Frame("Frame1");                                               
    printHello = new Button("print hello");                                    
    frame.add(printHello);                                                     
    printHello.addActionListener(this);                                        
    frame.setSize(100, 100);                                                   
    frame.setLocation(120, 1);                                                 
  }                                                            
  // shows the frames                                                          
  public void show()                                                           
  {                                                                            
    parent.setVisible(true);                                                   
    frame.setVisible(true);                                                    
  }                                                                            
  // ActionListener implementation                                             
  public void actionPerformed(ActionEvent event)                               
  {                                                                            
    if (event.getSource() == showDialog)                                       
      dialog.show();                                                           
    else                                                                       
      System.out.println("print hello");                                       
  }                                                                            
  // test main                                                                 
  public static void main(String[] args)                                       
  {                                                                            
    ModalBug bug = new ModalBug();                                             
    bug.show();                                                                
  }                                                                            
}
(Review ID: 21370)
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