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update-tree! for updating JTree #50

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update-tree! for updating JTree #50

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0c780ed
update-tree!
odyssomay Jul 28, 2011
202b885
tests for update-tree!
odyssomay Jul 28, 2011
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update-tree!
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@odyssomay
odyssomay committed Jul 28, 2011
commit 0c780ede7225925e37681e76ff3930b12d00093e
19 changes: 19 additions & 0 deletions src/seesaw/tree.clj
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Expand Up @@ -25,3 +25,22 @@
(removeTreeModelListener [this listener])
(valueForPathChanged [this path newValue])))

(defn update-tree!
"Update a tree.
The model is optional, if not supplied this function refreshes
the tree (useful for e.g. file trees).

Expanded nodes will still be expanded after update, given that
the expanded node didn't change.
"
{:arglists '([tree model?])}
[tree & [model]]
(if model
(let [visible_paths (doall
(for [row (range (.getRowCount tree))]
(.getPathForRow tree row)))]
(.setModel tree (if model model (.getModel tree)))
(doseq [path visible_paths]
(.makeVisible tree path)))
(.updateUI tree))
tree)