In FCS-O, when edit JTree node, JTree sometimes lost Input Method status.

To repdoduce:
  1. run demo Sample tree java -jar SampleTree.jar
  2. check editable in SampleTree
  3. click one node to select it (We name it node A)
  4. click node A to go to editing status
  5. press Ctrl+space to activate Input Method
  6. type some word, for example 'zhongguo'
  7. use mouse to click another node, (this cancel the input in node A)
  8. click node A to go to editing status.
  9. now, the Input Method status is shown, and in Chinese input status.
     But when you type 'zhongguo', the Input Method doesn't work, only
     english characters sent to node A.

###@###.### 1999-11-15


=========================================================================