[cp-patches] Patch: Popup fix

[Lillian Angel]

I ran into a issue where the parent of the invoker of the Popup may be
set to null if some overriding class removes the Popup earlier than the
BasicPopupMenuUI.PopupMenuHandler. I got a NPE; when I resolved this, I
ran into problems actually removing the popup from the layeredPane
(because the invoker's parent is null, so the rootPane would be null).
It made more sense to create a variable to store the layeredPane when
the popup was created, since the same layeredPane is used to show and
hide the popup.

2005-11-04  Lillian Angel  <address@hidden>

        * javax/swing/plaf/basic/BasicMenuItemUI.java
        (paintMenuItem): Changed to use isTopLevelMenu rather than 
        checking instance of parent.
        * javax/swing/plaf/basic/BasicPopupMenuUI.java
        (popupMenuWillBecomeInvisible): Added check to prevent NPE.
        * javax/swing/Popup.java:
        Added new private field.
        (LightweightPopup): Initialized layeredPane.
        (show): Removed unneeded code.
        (hide): Likewise.

patch.diff
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