drupal控制account 用户名、当前密码的显示

/**
 * Implements hook_form_alter
 */
function mymodule_form_alter(&$form, &$form_state, $form_id) {
  switch ($form_id) {
     case 'user_pass': // user pass page
      $form['name']['#title'] = t('请输入您的注册邮箱：');
      $form['name']['#description'] = '';
      $form['actions']['submit']['#value'] = t('确认>');
      // $form['name']['#attributes'] = array('placeholder' => array(t('Your e-mail')));
      break;
    case 'user_login': // user login page
      $form['name']['#size'] = 30;
      $form['pass']['#size'] = 30;
      $form['actions']['submit']['#value'] = t('确认提交');
      $form['#attributes'] = array('class' => array('user-login'));
      /*$form['name']['#attributes'] = array('placeholder' => array(t('用户名或邮箱地址')));
      $form['pass']['#attributes'] = array('placeholder' => array(t('输入您的登录密码')));*/
      if (arg(0) && arg(1) && arg(0) == 'user' && arg(1) == 'login') {
        // drupal_set_title(t('登录'));
        $form['name']['#title'] = t('用户名或邮箱地址');
        $form['pass']['#title'] = t('输入您的登录密码');
        unset($form['name']['#description']);
        unset($form['pass']['#description']);
      }
      break;
      case 'user_register_form':
      // dpm($form);
        $form['account']['name']['#access'] = TRUE;
        $form['account']['name']['#title'] = t('用户名');
        unset($form['account']['name']['#description']);

        $form['account']['mail']['#title'] = t('电子邮箱');
        $form['actions']['submit']['#value'] = t('提交>');
        unset($form['field_gender']['und']['#options']['_none']);
        unset($form['account']['mail']['#description']);
        unset($form['account']['current_pass']['#description']);
        unset($form['account']['pass']['#description']);

        $form['name'] = $form['account']['name'];
        $form['name']['#weight'] = 6;
        unset($form['account']['name']);

        if (variable_get('nocurrent_pass_disabled', TRUE)) {
        // searches the #validate array for the current_pass validation function, and removes it
        $key = array_search('user_validate_current_pass', $form['#validate']);
        if ($key !== FALSE) {
          unset($form['#validate'][$key]);
        }
        // hide the current password fields
        $form['account']['current_pass_required_value']['#access'] = FALSE;
        $form['account']['current_pass']['#access'] = FALSE;
        }
        $form['contract']=array(
        '#markup' => theme('user_register_contract'),
        '#weight' => 14
        );
        $form['argee'] = array(
          '#type' => 'checkbox',
          '#title' => t('我同意协议内容'),
          // '#description' => t('我同意协议内容'),
          '#required' => TRUE,
          '#weight' => 15
        );
        // dpm($form);
        $form['actions']['#weight'] = 20;
        $form['actions']['submit']['#states'] =  array(
              // Hide the settings when the cancel notify checkbox is disabled.
              'disabled' => array(
               ':input[name="argee"]' => array('checked' => FALSE),
              ),
            );
       break;

  }

}