includes/analyze.inc

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<?php

function views_analyze_view(&$view) {
  $view->init_display();
  $messages = module_invoke_all('views_analyze', $view);

  return $messages;
}

function views_analyze_format_result($view, $messages) {
  if (empty($messages)) {
    $messages = array(views_ui_analysis(t('View analysis can find nothing to report.'), 'ok'));
  }

  $types = array('ok' => array(), 'warning' => array(), 'error' => array());
  foreach ($messages as $message) {
    if (empty($types[$message['type']])) {
      $types[$message['type']] = array();
    }
    $types[$message['type']][] = $message['message'];
  }

  $output = '';
  foreach ($types as $type => $messages) {
    $message = '';
    if (count($messages) > 1) {
      $message = theme('item_list', array('items' => $messages));
    }
    elseif ($messages) {
      $message = array_shift($messages);
    }

    if ($message) {
      $output .= "<div class=\"$type\">$message</div>";
    }
  }

  return $output;
}

function views_ui_analysis($message, $type = 'error') {
  return array('message' => $message, 'type' => $type);
}

function views_ui_views_analyze($view) {
  $ret = array();
  // Check for something other than the default display:
  if (count($view->display) < 2) {
    $ret[] = views_ui_analysis(t('This view has only a default display and therefore will not be placed anywhere on your site; perhaps you want to add a page or a block display.'), 'warning');
  }
  // You can give a page display the same path as an alias existing in the
  // system, so the alias will not work anymore. Report this to the user,
  // because he probably wanted something else.
  foreach ($view->display as $id => $display) {
    if (empty($display->handler)) {
      continue;
    }
    if ($display->handler->has_path() && $path = $display->handler->get_option('path')) {
      $normal_path = drupal_get_normal_path($path);
      if ($path != $normal_path) {
        $ret[] = views_ui_analysis(t('You have configured display %display with a path which is an path alias as well. This might lead to unwanted effects so better use an internal path.', array('%display' => $display->display_title)), 'warning');
      }
    }
  }

  return $ret;
}