function number_field_widget_form

Implements hook_field_widget_form().

File

core/modules/field/modules/number/number.module, line 392

Defines numeric field types.

Code

function number_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $element) {
  $value = isset($items[$delta]['value']) ? $items[$delta]['value'] : '';

  $element += array(
    '#type' => 'number',
    '#default_value' => $value,
  );

  // Set default field values based on the number type.
  switch ($field['type']) {
    case 'number_decimal':
      // Calculate the minimum and maximum value of the decimal field based on
      // precision and scale settings.
      $number_value = intval(('1e+' . ($field['settings']['precision'] - $field['settings']['scale'])) - 1);
      $decimal_value = intval(('1e+' . $field['settings']['scale']) - 1);
      $element['#min'] = (float) ('-' . $number_value . '.' . $decimal_value);
      $element['#max'] = (float) ($number_value . '.' . $decimal_value);

      // Avoid small float as base in function pow() for better results
      // regarding floating point precision.
      $scale = (int) $field['settings']['scale'];
      $element['#step'] = 1 / pow(10, $scale);
      break;

    case 'number_float':
      $element['#min'] = -3.402823466E+38;
      $element['#max'] = 3.402823466E+38;
      $element['#step'] = 'any';
      break;

    case 'number_integer':
      $element['#min'] = '-2147483647';
      $element['#max'] = '2147483647';
  }

  // Override the default minimum and maximum settings if configured.
  if (is_numeric($instance['settings']['min'])) {
    $element['#min'] = $instance['settings']['min'];
  }
  if (is_numeric($instance['settings']['max'])) {
    $element['#max'] = $instance['settings']['max'];
  }

  // Add prefix and suffix.
  if (!empty($instance['settings']['prefix'])) {
    $prefixes = explode('|', $instance['settings']['prefix']);
    $element['#field_prefix'] = field_filter_xss(array_pop($prefixes));
  }
  if (!empty($instance['settings']['suffix'])) {
    $suffixes = explode('|', $instance['settings']['suffix']);
    $element['#field_suffix'] = field_filter_xss(array_pop($suffixes));
  }

  return array('value' => $element);
}