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<?php
/**
* @file
* Contains \Drupal\taxonomy\Form\OverviewTerms
*/
namespace Drupal\taxonomy\Form;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\taxonomy\VocabularyInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
/*
* Provides terms overview form for a taxonomy vocabulary.
*/
class OverviewTerms extends FormBase {
/**
* The module handler service.
*
* @var \Drupal\Core\Extension\ModuleHandlerInterface
*/
protected $moduleHandler;
/**
* Constructs an OverviewTerms object.
*
* @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
* The module handler service.
*/
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public function __construct(ModuleHandlerInterface $module_handler) {
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$this->moduleHandler = $module_handler;
}
/**
* {@inheritdoc}
*/
public static function create(ContainerInterface $container) {
return new static(
$container->get('module_handler')
);
}
/**
* {@inheritdoc}
*/
public function getFormId() {
return 'taxonomy_overview_terms';
}
/**
* Form constructor.
*
* Display a tree of all the terms in a vocabulary, with options to edit
* each one. The form is made drag and drop by the theme function.
*
* @param array $form
* An associative array containing the structure of the form.
* @param array $form_state
* An associative array containing the current state of the form.
* @param \Drupal\taxonomy\VocabularyInterface $taxonomy_vocabulary
* The vocabulary to display the overview form for.
*
* @return array
* The form structure.
*/
public function buildForm(array $form, array &$form_state, VocabularyInterface $taxonomy_vocabulary = NULL) {
// @todo Remove global variables when http://drupal.org/node/2044435 is in.
global $pager_page_array, $pager_total, $pager_total_items;
$form_state['taxonomy']['vocabulary'] = $taxonomy_vocabulary;
$parent_fields = FALSE;
$page = $this->getRequest()->query->get('page') ?: 0;
// Number of terms per page.
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$page_increment = $this->config('taxonomy.settings')->get('terms_per_page_admin');
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// Elements shown on this page.
$page_entries = 0;
// Elements at the root level before this page.
$before_entries = 0;
// Elements at the root level after this page.
$after_entries = 0;
// Elements at the root level on this page.
$root_entries = 0;
// Terms from previous and next pages are shown if the term tree would have
// been cut in the middle. Keep track of how many extra terms we show on
// each page of terms.
$back_step = NULL;
$forward_step = 0;
// An array of the terms to be displayed on this page.
$current_page = array();
$delta = 0;
$term_deltas = array();
// @todo taxonomy_get_tree needs to be converted to a service and injected.
// Will be fixed in http://drupal.org/node/1976298.
$tree = taxonomy_get_tree($taxonomy_vocabulary->id(), 0, NULL, TRUE);
$term = current($tree);
do {
// In case this tree is completely empty.
if (empty($term)) {
break;
}
$delta++;
// Count entries before the current page.
if ($page && ($page * $page_increment) > $before_entries && !isset($back_step)) {
$before_entries++;
continue;
}
// Count entries after the current page.
elseif ($page_entries > $page_increment && isset($complete_tree)) {
$after_entries++;
continue;
}
// Do not let a term start the page that is not at the root.
if (isset($term->depth) && ($term->depth > 0) && !isset($back_step)) {
$back_step = 0;
while ($pterm = prev($tree)) {
$before_entries--;
$back_step++;
if ($pterm->depth == 0) {
prev($tree);
// Jump back to the start of the root level parent.
continue 2;
}
}
}
$back_step = isset($back_step) ? $back_step : 0;
// Continue rendering the tree until we reach the a new root item.
if ($page_entries >= $page_increment + $back_step + 1 && $term->depth == 0 && $root_entries > 1) {
$complete_tree = TRUE;
// This new item at the root level is the first item on the next page.
$after_entries++;
continue;
}
if ($page_entries >= $page_increment + $back_step) {
$forward_step++;
}
// Finally, if we've gotten down this far, we're rendering a term on this
// page.
$page_entries++;
$term_deltas[$term->id()] = isset($term_deltas[$term->id()]) ? $term_deltas[$term->id()] + 1 : 0;
$key = 'tid:' . $term->id() . ':' . $term_deltas[$term->id()];
// Keep track of the first term displayed on this page.
if ($page_entries == 1) {
$form['#first_tid'] = $term->id();
}
// Keep a variable to make sure at least 2 root elements are displayed.
if ($term->parents[0] == 0) {
$root_entries++;
}
$current_page[$key] = $term;
} while ($term = next($tree));
// Because we didn't use a pager query, set the necessary pager variables.
$total_entries = $before_entries + $page_entries + $after_entries;
$pager_total_items[0] = $total_entries;
$pager_page_array[0] = $page;
$pager_total[0] = ceil($total_entries / $page_increment);
// If this form was already submitted once, it's probably hit a validation
// error. Ensure the form is rebuilt in the same order as the user
// submitted.
if (!empty($form_state['input'])) {
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// Get the $_POST order.
$order = array_flip(array_keys($form_state['input']['terms']));
// Update our form with the new order.
$current_page = array_merge($order, $current_page);
foreach ($current_page as $key => $term) {
// Verify this is a term for the current page and set at the current
// depth.
if (is_array($form_state['input']['terms'][$key]) && is_numeric($form_state['input']['terms'][$key]['term']['tid'])) {
$current_page[$key]->depth = $form_state['input']['terms'][$key]['term']['depth'];
}
else {
unset($current_page[$key]);
}
}
}
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$errors = form_get_errors($form_state);
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$destination = drupal_get_destination();
$row_position = 0;
// Build the actual form.
$form['terms'] = array(
'#type' => 'table',
'#header' => array($this->t('Name'), $this->t('Weight'), $this->t('Operations')),
'#empty' => $this->t('No terms available. <a href="@link">Add term</a>.', array('@link' => url('admin/structure/taxonomy/manage/' . $taxonomy_vocabulary->id() . '/add'))),
'#attributes' => array(
'id' => 'taxonomy',
),
);
foreach ($current_page as $key => $term) {
$uri = $term->uri();
$edit_uri = $term->uri('edit-form');
$form['terms'][$key]['#term'] = $term;
$indentation = array();
if (isset($term->depth) && $term->depth > 0) {
$indentation = array(
'#theme' => 'indentation',
'#size' => $term->depth,
);
}
$form['terms'][$key]['term'] = array(
'#prefix' => !empty($indentation) ? drupal_render($indentation) : '',
'#type' => 'link',
'#title' => $term->label(),
'#href' => $uri['path'],
);
if ($taxonomy_vocabulary->hierarchy != TAXONOMY_HIERARCHY_MULTIPLE && count($tree) > 1) {
$parent_fields = TRUE;
$form['terms'][$key]['term']['tid'] = array(
'#type' => 'hidden',
'#value' => $term->id(),
'#attributes' => array(
'class' => array('term-id'),
),
);
$form['terms'][$key]['term']['parent'] = array(
'#type' => 'hidden',
// Yes, default_value on a hidden. It needs to be changeable by the
// javascript.
'#default_value' => $term->parents[0],
'#attributes' => array(
'class' => array('term-parent'),
),
);
$form['terms'][$key]['term']['depth'] = array(
'#type' => 'hidden',
// Same as above, the depth is modified by javascript, so it's a
// default_value.
'#default_value' => $term->depth,
'#attributes' => array(
'class' => array('term-depth'),
),
);
}
$form['terms'][$key]['weight'] = array(
'#type' => 'weight',
'#delta' => $delta,
'#title' => $this->t('Weight for added term'),
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'#title_display' => 'invisible',
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'#default_value' => $term->weight->value,
'#attributes' => array(
'class' => array('term-weight'),
),
);
$operations = array(
'edit' => array(
'title' => $this->t('edit'),
'href' => $edit_uri['path'],
'query' => $destination,
),
'delete' => array(
'title' => $this->t('delete'),
'href' => $uri['path'] . '/delete',
'query' => $destination,
),
);
if ($this->moduleHandler->moduleExists('content_translation') && content_translation_translate_access($term)) {
$operations['translate'] = array(
'title' => $this->t('translate'),
'href' => $uri['path'] . '/translations',
'query' => $destination,
);
}
$form['terms'][$key]['operations'] = array(
'#type' => 'operations',
'#links' => $operations,
);
$form['terms'][$key]['#attributes']['class'] = array();
if ($parent_fields) {
$form['terms'][$key]['#attributes']['class'][] = 'draggable';
}
// Add classes that mark which terms belong to previous and next pages.
if ($row_position < $back_step || $row_position >= $page_entries - $forward_step) {
$form['terms'][$key]['#attributes']['class'][] = 'taxonomy-term-preview';
}
if ($row_position !== 0 && $row_position !== count($tree) - 1) {
if ($row_position == $back_step - 1 || $row_position == $page_entries - $forward_step - 1) {
$form['terms'][$key]['#attributes']['class'][] = 'taxonomy-term-divider-top';
}
elseif ($row_position == $back_step || $row_position == $page_entries - $forward_step) {
$form['terms'][$key]['#attributes']['class'][] = 'taxonomy-term-divider-bottom';
}
}
// Add an error class if this row contains a form error.
foreach ($errors as $error_key => $error) {
if (strpos($error_key, $key) === 0) {
$form['terms'][$key]['#attributes']['class'][] = 'error';
}
}
$row_position++;
}
if ($parent_fields) {
$form['terms']['#tabledrag'][] = array(
'match',
'parent',
'term-parent',
'term-parent',
'term-id',
FALSE,
);
$form['terms']['#tabledrag'][] = array(
'depth',
'group',
'term-depth',
NULL,
NULL,
FALSE
);
$form['terms']['#attached']['library'][] = array('taxonomy', 'drupal.taxonomy');
$form['terms']['#attached']['js'][] = array(
'data' => array('taxonomy' => array('backStep' => $back_step, 'forwardStep' => $forward_step)),
'type' => 'setting',
);
}
$form['terms']['#tabledrag'][] = array('order', 'sibling', 'term-weight');
if ($taxonomy_vocabulary->hierarchy != TAXONOMY_HIERARCHY_MULTIPLE && count($tree) > 1) {
$form['actions'] = array('#type' => 'actions', '#tree' => FALSE);
$form['actions']['submit'] = array(
'#type' => 'submit',
'#value' => $this->t('Save'),
'#button_type' => 'primary',
);
$form['actions']['reset_alphabetical'] = array(
'#type' => 'submit',
'#submit' => array(array($this, 'submitReset')),
'#value' => $this->t('Reset to alphabetical'),
);
$form_state['redirect'] = array(current_path(), ($page ? array('query' => array('page' => $page)) : array()));
}
return $form;
}
/**
* Form submission handler.
*
* Rather than using a textfield or weight field, this form depends entirely
* upon the order of form elements on the page to determine new weights.
*
* Because there might be hundreds or thousands of taxonomy terms that need to
* be ordered, terms are weighted from 0 to the number of terms in the
* vocabulary, rather than the standard -10 to 10 scale. Numbers are sorted
* lowest to highest, but are not necessarily sequential. Numbers may be
* skipped when a term has children so that reordering is minimal when a child
* is added or removed from a term.
*
* @param array $form
* An associative array containing the structure of the form.
* @param array $form_state
* An associative array containing the current state of the form.
*/
public function submitForm(array &$form, array &$form_state) {
// Sort term order based on weight.
uasort($form_state['values']['terms'], 'drupal_sort_weight');
$vocabulary = $form_state['taxonomy']['vocabulary'];
// Update the current hierarchy type as we go.
$hierarchy = TAXONOMY_HIERARCHY_DISABLED;
$changed_terms = array();
// @todo taxonomy_get_tree needs to be converted to a service and injected.
// Will be fixed in http://drupal.org/node/1976298.
$tree = taxonomy_get_tree($vocabulary->id(), 0, NULL, TRUE);
if (empty($tree)) {
return;
}
// Build a list of all terms that need to be updated on previous pages.
$weight = 0;
$term = $tree[0];
while ($term->id() != $form['#first_tid']) {
if ($term->parents[0] == 0 && $term->weight->value != $weight) {
$term->weight->value = $weight;
$changed_terms[$term->id()] = $term;
}
$weight++;
$hierarchy = $term->parents[0] != 0 ? TAXONOMY_HIERARCHY_SINGLE : $hierarchy;
$term = $tree[$weight];
}
// Renumber the current page weights and assign any new parents.
$level_weights = array();
foreach ($form_state['values']['terms'] as $tid => $values) {
if (isset($form['terms'][$tid]['#term'])) {
$term = $form['terms'][$tid]['#term'];
// Give terms at the root level a weight in sequence with terms on previous pages.
if ($values['term']['parent'] == 0 && $term->weight->value != $weight) {
$term->weight->value = $weight;
$changed_terms[$term->id()] = $term;
}
// Terms not at the root level can safely start from 0 because they're all on this page.
elseif ($values['term']['parent'] > 0) {
$level_weights[$values['term']['parent']] = isset($level_weights[$values['term']['parent']]) ? $level_weights[$values['term']['parent']] + 1 : 0;
if ($level_weights[$values['term']['parent']] != $term->weight->value) {
$term->weight->value = $level_weights[$values['term']['parent']];
$changed_terms[$term->id()] = $term;
}
}
// Update any changed parents.
if ($values['term']['parent'] != $term->parents[0]) {
$term->parent->value = $values['term']['parent'];
$changed_terms[$term->id()] = $term;
}
$hierarchy = $term->parents[0] != 0 ? TAXONOMY_HIERARCHY_SINGLE : $hierarchy;
$weight++;
}
}
// Build a list of all terms that need to be updated on following pages.
for ($weight; $weight < count($tree); $weight++) {
$term = $tree[$weight];
if ($term->parents[0] == 0 && $term->weight->value != $weight) {
$term->parent->value = $term->parents[0];
$term->weight->value = $weight;
$changed_terms[$term->id()] = $term;
}
$hierarchy = $term->parents[0] != 0 ? TAXONOMY_HIERARCHY_SINGLE : $hierarchy;
}
// Save all updated terms.
foreach ($changed_terms as $term) {
$term->save();
}
// Update the vocabulary hierarchy to flat or single hierarchy.
if ($vocabulary->hierarchy != $hierarchy) {
$vocabulary->hierarchy = $hierarchy;
$vocabulary->save();
}
drupal_set_message($this->t('The configuration options have been saved.'));
}
/**
* Redirects to confirmation form for the reset action.
*/
public function submitReset(array &$form, array &$form_state) {
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$form_state['redirect_route'] = array(
'route_name' => 'taxonomy.vocabulary_reset',
'route_parameters' => array('taxonomy_vocabulary' => $form_state['taxonomy']['vocabulary']->id()),
);