function styleguide_palette_swatch_validate_hex in Style Guide 7

Form element validation handler for hex elements.

1 string reference to 'styleguide_palette_swatch_validate_hex'

styleguide_palette_form in styleguide_palette/styleguide_palette.admin.inc

Form constructor for the style guide swatch form.

File

styleguide_palette/styleguide_palette.admin.inc, line 129

Administrative page callbacks for the Style Guide Swatch module.

Code

function styleguide_palette_swatch_validate_hex($element, &$form_state) {
  $value = strtolower($element['#value']);
  if ($value !== '' && !preg_match('/^#([a-f0-9]{3}){1,2}$/iD', $value)) {
    form_error($element, t('%name must be a valid hexadecimal CSS color value.', array(
      '%name' => $element['#title'],
    )));
  }
}