Bug Info:
=========
JTextField not lose the focus temporarily while invoking a JPopupMenu.And also two components have the focus at a time.

JDK Info:
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java version "1.6.0_01-ea"
Java(TM) SE Runtime Environment (build 1.6.0_01-ea-b03)
Java HotSpot(TM) Client VM (build 1.6.0_01-ea-b03, mixed mode, sharing)

Steps to reproduce
===================
1. Download the attached java file.
2. Execute the file with latest JDK.
3. Place the focus on textfield and enter some characters.
4. Right click on internal frame and then poupmenu should show.

Expected Behavior:
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Popupmenu should gain the focus and cursor should not appear in the textfield until dispose the popup menu by pressing ESC.

Actual Behavior:
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Popupmenu gain the focus and textfield also have the focus.

Its working fine with 1.5.0 fcs release.