private void updateRemoveButtons(boolean updateRemove, boolean updateRemoveAll) {
   TablePart tablePart = getTablePart();
   Table table = tablePart.getTableViewer().getTable();
   TableItem[] tableSelection = table.getSelection();
   if (updateRemove) {
     ISelection selection = getViewerSelection();
     tablePart.setButtonEnabled(
         3,
         isEditable()
             && !selection.isEmpty()
             && selection instanceof IStructuredSelection
             && ((IStructuredSelection) selection).getFirstElement() instanceof IProductPlugin);
   }
   int count = fPluginTable.getTable().getItemCount();
   if (updateRemoveAll) tablePart.setButtonEnabled(4, isEditable() && count > 0);
   tablePart.setButtonEnabled(2, isEditable() && count > 0);
   tablePart.setButtonEnabled(5, isEditable() && tableSelection.length == 1);
 }
 /** Tests if the current workbench selection is a suitable container to use. */
 private void initialize() {
   if (selection != null
       && selection.isEmpty() == false
       && selection instanceof IStructuredSelection) {
     IStructuredSelection ssel = (IStructuredSelection) selection;
     if (ssel.size() > 1) {
       return;
     }
     Object obj = ssel.getFirstElement();
     if (obj instanceof IResource) {
       IContainer container;
       if (obj instanceof IContainer) {
         container = (IContainer) obj;
       } else {
         container = ((IResource) obj).getParent();
       }
       containerText.setText(container.getFullPath().toString());
     }
   }
   fileText.setText("new.gaml");
 }
 private void updateSelectionBasedEnablement(ISelection theSelection, boolean available) {
   if (available) fAddButton.setEnabled(!theSelection.isEmpty());
   else fRemoveButton.setEnabled(!theSelection.isEmpty());
 }