if (page == null)
return;
final ElementTreeSelectionDialog dlg = new ElementTreeSelectionDialog(null, new ShowViewDialogLabelProvider(), new ShowViewDialogTreeContentProvider());
dlg.setTitle(Messages.ViewShare_VIEWSHARE_VIEW_REQUEST_DIALOG_TITLE);
dlg.setMessage(Messages.ViewShare_VIEWSHARE_VIEW_REQUEST_DIALOG_MESSAGE);
dlg.addFilter(new ShowViewDialogViewerFilter());
dlg.setComparator(new ViewerComparator());
dlg.setValidator(new ISelectionStatusValidator() {
public IStatus validate(Object[] selection) {
for (int i = 0; i < selection.length; ++i)
if (!(selection[i] instanceof IViewDescriptor))