/**
* Builds the notification and diff for source changes for a data item.
*
* @param array $item_element
* The form element for the data item.
* @param \Drupal\Core\Form\FormStateInterface $form_state
* The form state.
* @param string $field_name
* The name of the form element.
* @param string $key
* The data item key for the given structure.
* @param string $ajax_id
* The ID used for ajax replacements.
*
* @return array
* The form element for the data item.
*/
protected function buildChangedSource($item_element, FormStateInterface $form_state, $field_name, $key, $ajax_id)
{
// Check for source changes and offer actions.
if (isset($form_state->get('source_changed')[$key])) {
// Show diff if requested.
if ($form_state->get('show_diff:' . $key)) {
$keys = \Drupal::service('tmgmt.data')->ensureArrayKey($field_name);
try {
$new_data = \Drupal::service('tmgmt.data')->flatten($this->entity->getSourceData());
} catch (TMGMTException $e) {
$new_data = [];
}
$current_data = $this->entity->getData($keys);
$diff_header = ['', t('Current text'), '', t('New text')];
$current_lines = explode("\n", $current_data['#text']);
$new_lines = explode("\n", isset($new_data[$key]) ? $new_data[$key]['#text'] : '');
$diff_formatter = new DiffFormatter($this->configFactory());
$diff = new Diff($current_lines, $new_lines);
$diff_rows = $diff_formatter->format($diff);
// Unset start block.
unset($diff_rows[0]);
$item_element['below']['source_changed']['diff'] = ['#type' => 'table', '#header' => $diff_header, '#rows' => $diff_rows, '#empty' => $this->t('No visible changes'), '#attributes' => ['class' => ['diff']]];
$item_element['below']['source_changed']['#attached']['library'][] = 'system/diff';
$item_element['below_actions']['resolve-diff'] = ['#type' => 'submit', '#value' => t('Resolve'), '#attributes' => ['title' => t('Apply the changes of the source.')], '#name' => 'resolve-diff-' . $field_name, '#data_item_key' => $key, '#submit' => ['::resolveDiff'], '#ajax' => ['callback' => '::ajaxReviewForm', 'wrapper' => $ajax_id]];
} else {
$item_element['below']['source_changed'] = ['#type' => 'container', '#attributes' => ['class' => ['tmgmt_source_changed', 'messages', 'messages--warning']]];
// Display changed message.
$item_element['below']['source_changed']['message'] = ['#markup' => '<span>' . $form_state->get('source_changed')[$key] . '</span>', '#attributes' => ['class' => ['tmgmt-review-message-inline']]];
if (!isset($form_state->get('source_removed')[$key])) {
// Offer diff action.
$item_element['below']['source_changed']['diff_button'] = ['#type' => 'submit', '#value' => t('Show change'), '#name' => 'diff-button-' . $field_name, '#data_item_key' => $key, '#submit' => ['::showDiff'], '#attributes' => ['class' => ['tmgmt-review-message-inline']], '#ajax' => ['callback' => '::ajaxReviewForm', 'wrapper' => $ajax_id]];
}
}
}
return $item_element;
}
