Implements hook_field_widget_settings_form().
function link_field_widget_settings_form($field, $instance) {
$widget = $instance['widget'];
$settings = $widget['settings'];
$form['placeholder_url'] = array(
'#type' => 'textfield',
'#title' => t('Placeholder for URL'),
'#default_value' => $settings['placeholder_url'],
'#description' => t('The placeholder is a short hint (a word or short phrase) intended to aid the user with data entry. A hint could be a sample value or a brief description of the expected format.'),
);
$form['placeholder_title'] = array(
'#type' => 'textfield',
'#title' => t('Placeholder for link title'),
'#default_value' => $settings['placeholder_title'],
'#description' => t('The placeholder is a short hint (a word or short phrase) intended to aid the user with data entry. A hint could be a sample value or a brief description of the expected format.'),
'#states' => array(
'invisible' => array(
':input[name="instance[settings][title]"]' => array(
'value' => DRUPAL_DISABLED,
),
),
),
);
return $form;
}