public String clearAll(boolean validation) {
if (tableViewer.getTable() != null) {
// validate values;
String errorMessage = clearEditors(validation);
if (errorMessage != null) return errorMessage;
columnNames = null;
columnTitles = null;
cellEditors = null;
data = null;
isColumnPacked = false;
tableViewer.getTable().dispose();
viewForm.dispose();
container.dispose();
}
return null;
}
