I've been having an ongoing problem with tooltips associated with JTree nodes.
The nodes are custom (ie.not DefaultMutableTreeNodes) but all methods are
defined. The JTree is in a JInternalFrame. I'm running 1.3.1 on Solaris.
I derive from DefaultTreeCellRenderer and override
getTreeCellRendererComponent(...) to provide for both the node icons and the
tooltips.
Occasionally, after displaying a particular node's tooltip, which happens to
exceed the width of the JInternalFrame), I leave the mouse in postition and let
the tooltip disappear on its own. SOMETIMES subsequent to this action, I find
this same tooltip appearing to overwrite one or more other components: possibly
the tooltip for another node (I can see the "wrong" tooltip on top and the tail
end of the even longer "correct" tooltip under it). Sometimes the persistent
tooltip may overwrite the first JMenuItem of a JPopupMenu attached to a JButton
on the same internal frame.
I was unable to track either the getToolTipText accesses (everything is what I
would expect) or to force the ToolTipText to null when I didn't need any. The
overwriting seems to persist for a while, sometimes it disappears after a while,
only to return later, and I've found that only the "too long" tooltips seem to
overwrite other components. I checked the Bug Parade and, while I found several
hits that are somewhat relevant, Sun closed them as "not reproducible".
I think it might be related to the processing of MouseEvents (too many, too
fast?) but I'm not sure how to tell. Would someone please suggest where/what I
should be looking into to find out what is causing this effect?
TIA.
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Patricia Keith In dwelling, be close to the land.
NASA Glenn Research Center In meditation, go deep in the heart
at Lewis Field In dealing with others,
Cleveland, OH be gentle and kind.
Phone: (216) 433-5191
Fax: (216) 433-8000
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