[466699] ConfirmationPage: SWTException in Tree.setRedraw (2979)

https://bugs.eclipse.org/bugs/show_bug.cgi?id=466699

1 files changed, 21 insertions, 18 deletions

diff --git a/plugins/org.eclipse.oomph.setup.ui/src/org/eclipse/oomph/setup/ui/wizards/ConfirmationPage.java b/plugins/org.eclipse.oomph.setup.ui/src/org/eclipse/oomph/setup/ui/wizards/ConfirmationPage.java
index 6dc11c9f6..267f374de 100644
--- a/plugins/org.eclipse.oomph.setup.ui/src/org/eclipse/oomph/setup/ui/wizards/ConfirmationPage.java
+++ b/plugins/org.eclipse.oomph.setup.ui/src/org/eclipse/oomph/setup/ui/wizards/ConfirmationPage.java
@@ -619,33 +619,36 @@ public class ConfirmationPage extends SetupWizardPage
       @Override
       public void controlResized(ControlEvent e)
       {
-        try
+        if (!tree.isDisposed())
         {
-          tree.setRedraw(false);
+          try
+          {
+            tree.setRedraw(false);
 
-          Rectangle clientArea = tree.getClientArea();
-          int clientWidth = clientArea.width - clientArea.x;
+            Rectangle clientArea = tree.getClientArea();
+            int clientWidth = clientArea.width - clientArea.x;
 
-          // We get events during setInput where the tree items are disposed because the view is empty and then the column can't be packed.
-          TreeItem[] items = tree.getItems();
-          if (items.length > 0 && !items[0].isDisposed())
-          {
-            column.pack();
-            int width = column.getWidth();
-            if (width < clientWidth)
+            // We get events during setInput where the tree items are disposed because the view is empty and then the column can't be packed.
+            TreeItem[] items = tree.getItems();
+            if (items.length > 0 && !items[0].isDisposed())
+            {
+              column.pack();
+              int width = column.getWidth();
+              if (width < clientWidth)
+              {
+                column.setWidth(clientWidth);
+              }
+            }
+            else
             {
               column.setWidth(clientWidth);
             }
+
           }
-          else
+          finally
           {
-            column.setWidth(clientWidth);
+            tree.setRedraw(true);
           }
-
-        }
-        finally
-        {
-          tree.setRedraw(true);
         }
       }
     };