if (nButton == 0) {
addItemWithDialog(new ProjectFolderSelectionDialog(getShell(), project, true,
"Choose source folders to add to PYTHONPATH"));
} else if (nButton == 1) {
addItemWithDialog(new ResourceSelectionDialog(getShell(), project,
"Choose zip/jar/egg to add to PYTHONPATH"));
} else if (nButton == 2) {
addItemWithDialog(new InputDialog(getShell(), "Add path to resolve with variable",
"Add path to resolve with variable in the format: ${VARIABLE}", "", null));