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<?php
/**
* @file
* Contains \Drupal\link\Plugin\field\formatter\LinkFormatter.
*/
namespace Drupal\link\Plugin\field\formatter;
Alex Pott
committed
use Drupal\field\Annotation\FieldFormatter;
use Drupal\Core\Annotation\Translation;
use Drupal\Core\Entity\EntityInterface;
use Drupal\field\Plugin\Type\Formatter\FormatterBase;
/**
* Plugin implementation of the 'link' formatter.
*
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* @FieldFormatter(
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* id = "link",
* module = "link",
* label = @Translation("Link"),
* field_types = {
* "link"
* },
* settings = {
* "trim_length" = "80",
* "url_only" = "",
* "url_plain" = "",
* "rel" = "",
* "target" = ""
* }
* )
*/
class LinkFormatter extends FormatterBase {
/**
* {@inheritdoc}
*/
public function settingsForm(array $form, array &$form_state) {
$elements = parent::settingsForm($form, $form_state);
$elements['trim_length'] = array(
'#type' => 'number',
'#title' => t('Trim link text length'),
'#field_suffix' => t('characters'),
'#default_value' => $this->getSetting('trim_length'),
'#min' => 1,
'#description' => t('Leave blank to allow unlimited link text lengths.'),
);
$elements['url_only'] = array(
'#type' => 'checkbox',
'#title' => t('URL only'),
'#default_value' => $this->getSetting('url_only'),
'#access' => $this->getPluginId() == 'link',
);
$elements['url_plain'] = array(
'#type' => 'checkbox',
'#title' => t('Show URL as plain text'),
'#default_value' => $this->getSetting('url_plain'),
'#access' => $this->getPluginId() == 'link',
'#states' => array(
'visible' => array(
':input[name*="url_only"]' => array('checked' => TRUE),
),
),
);
$elements['rel'] = array(
'#type' => 'checkbox',
'#title' => t('Add rel="nofollow" to links'),
'#return_value' => 'nofollow',
'#default_value' => $this->getSetting('rel'),
);
$elements['target'] = array(
'#type' => 'checkbox',
'#title' => t('Open link in new window'),
'#return_value' => '_blank',
'#default_value' => $this->getSetting('target'),
);
return $elements;
}
/**
* {@inheritdoc}
*/
public function settingsSummary() {
$summary = array();
$settings = $this->getSettings();
if (!empty($settings['trim_length'])) {
$summary[] = t('Link text trimmed to @limit characters', array('@limit' => $settings['trim_length']));
}
else {
$summary[] = t('Link text not trimmed');
}
if ($this->getPluginId() == 'link' && !empty($settings['url_only'])) {
if (!empty($settings['url_plain'])) {
$summary[] = t('Show URL only as plain-text');
}
else {
$summary[] = t('Show URL only');
}
}
if (!empty($settings['rel'])) {
$summary[] = t('Add rel="@rel"', array('@rel' => $settings['rel']));
}
if (!empty($settings['target'])) {
$summary[] = t('Open link in new window');
}
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return $summary;
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}
/**
* {@inheritdoc}
*/
public function prepareView(array $entities, $langcode, array &$items) {
$settings = $this->getSettings();
foreach ($entities as $id => $entity) {
foreach ($items[$id] as $delta => &$item) {
// Split out the link into the parts required for url(): path and options.
$parsed = drupal_parse_url($item['url']);
$item['path'] = $parsed['path'];
$item['options'] = array(
'query' => $parsed['query'],
'fragment' => $parsed['fragment'],
'attributes' => &$item['attributes'],
);
// Add optional 'rel' attribute to link options.
if (!empty($settings['rel'])) {
$item['options']['attributes']['rel'] = $settings['rel'];
}
// Add optional 'target' attribute to link options.
if (!empty($settings['target'])) {
$item['options']['attributes']['target'] = $settings['target'];
}
}
}
}
/**
* {@inheritdoc}
*/
public function viewElements(EntityInterface $entity, $langcode, array $items) {
$element = array();
$settings = $this->getSettings();
foreach ($items as $delta => $item) {
// By default use the full URL as the link text.
$link_title = $item['url'];
// If the title field value is available, use it for the link text.
if (empty($settings['url_only']) && !empty($item['title'])) {
// Unsanitizied token replacement here because $options['html'] is FALSE
$link_title = \Drupal::token()->replace($item['title'], array($entity->entityType() => $entity), array('sanitize' => FALSE, 'clear' => TRUE));
}
// Trim the link text to the desired length.
if (!empty($settings['trim_length'])) {
$link_title = truncate_utf8($link_title, $settings['trim_length'], FALSE, TRUE);
}
if (!empty($settings['url_only']) && !empty($settings['url_plain'])) {
$element[$delta] = array(
'#type' => 'markup',
'#markup' => check_plain($link_title),
);
}
else {
$element[$delta] = array(
'#type' => 'link',
'#title' => $link_title,
'#href' => $item['path'],
'#options' => $item['options'],
);
}
}
return $element;
}
}