[Bug swing/26003] JTree expanding of nodes

[audriusa at bluewin dot ch]

------- Comment #1 from audriusa at bluewin dot ch  2006-01-28 21:12 -------
Created an attachment (id=10749)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10749&action=view)
Proposed fix in javax/swing/ViewportLayout.java

There was a strange (but documented) rule in the
javax/swing/ViewportLayout.java: If the port is larger than the view's minimum
size, put the port at view position (0,0). For the view port in the scroll pane
this near always means scrolling to the top left corner each time the component
is revalidated (by adding/removing tree nodes or just by resizing the window).

Normally, the views minimum size is rather small, the port is larger, so this
scrolling operation occurs near always. The problem can be fixed by rewriting
the layoutContainer, as described in the patch.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26003