[commit-cp] [bug #12748] modifiersEx mask in mouseRelease event not correct

[Roman Kennke]

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=12748>

                 Summary: modifiersEx mask in mouseRelease event not correct
                 Project: classpath
            Submitted by: rabbit78
            Submitted on: Wed 04/20/2005 at 13:01
                Category: classpath
                Severity: 4 - Important
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
        Platform Version: None

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Details:

when a mouse button is pressed (mousePressed() call) then the
BUTTONX_DOWN_MASK flag in getModifiersEx() should set, and when the mouse
button is released (mouseReleased() call) then it must be cleared. In GNU
Classpath it is still set.

In contrast to the getModifiers() mask, the getModifiersEx() mask reflects
the current state, and not what has changed. I'm quite sure that the bug is
in native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkEvents.c possibly in
button_to_awt_mods() but I am not sure.

Interesting: (that's how I found it) some code does rely on this faulty
behaviour, i.e. javax.swing.plaf.basic.BasicButtonListener. I will change
this class soon, so it doesn't depend on this behaviour. But this also means,
that fixing this bug might break some stuff.

I have put together a mauve testcase for this, I will commit this soon in
gnu/testlet/java/awt/event/MouseEvent/

/Roman






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