Bug 331288

Description PSko 2010-11-28 15:40:02 EST

Build Identifier: 1.3.0.20100615-1704

There's a problem in UntypedEventAdapter, in some cases the state of event.doit is not being translated to so called Typed? Event (ex: Event -> [Shell]Event). 

This problem make impossible to protect:
- the user against closing the window by mistake (when unsaved data present etc),
- the user against entering unwanted characters in the input box (VerifyEvent).


My quick solution is to apply the following patch:

diff -u UntypedEventAdapter.java.org UntypedEventAdapter.java
--- UntypedEventAdapter.java.org	2010-09-20 22:29:04.000000000 +0200
+++ UntypedEventAdapter.java	2010-09-20 22:29:07.000000000 +0200
@@ -86,6 +86,7 @@
     Event event = createEvent( SWT.Selection, evt.getSource() );
     copyFields( evt, event );
     dispatchEvent( event );
+    evt.doit = event.doit;
   }
 
   public void focusGained( final FocusEvent evt ) {
@@ -122,12 +123,14 @@
     Event event = createEvent( SWT.Close, evt.getSource() );
     copyFields( evt, event );
     dispatchEvent( event );
+    evt.doit = event.doit;
   }
 
   public void shellDeactivated( final ShellEvent evt ) {
     Event event = createEvent( SWT.Deactivate, evt.getSource() );
     copyFields( evt, event );
     dispatchEvent( event );
+    evt.doit = event.doit;
   }
 
   public void menuHidden( final MenuEvent evt ) {
@@ -152,6 +155,7 @@
     Event event = createEvent( SWT.Verify, evt.getSource() );
     copyFields( evt, event );
     dispatchEvent( event );
+    evt.doit = event.doit;
   }
 
   public void update( final SetDataEvent evt ) {



Reproducible: Always

Steps to Reproduce:
1. Add the event handler to protect against closing the Shell 
2. Try to close the shell via UI
3. SWT.Deactivate event is sent, set event.doit to false value
4. The shell is being close. The state of event.doit is lost, it is not being translated to ShellEvent.

I can see lots of places in UntypedEventAdapter where the state of event is not being translated back to *Event. Quick fix attached in Details.