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<?php
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/**
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* @file
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* Node count functionality for Simple hierarchical select.
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*/
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/**
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* Implements hook_field_widget_info_alter().
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*/
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function shs_node_count_field_widget_info_alter(&$info) {
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if (empty($info['taxonomy_shs'])) {
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return;
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}
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// Add "a"node_count" setting to a shs widgets.
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$info['taxonomy_shs']['settings']['shs'] += array(
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'node_count' => FALSE,
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);
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}
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/**
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* Implements hook_form_FORM_ID_alter().
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*/
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function shs_node_count_form_field_ui_field_edit_form_alter(&$form, &$form_state, $form_id) {
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if (empty($form['instance']['widget']['settings']['shs'])) {
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return;
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}
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$settings_form = &$form['instance']['widget']['settings']['shs'];
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$settings = &$form['#instance']['widget']['settings']['shs'];
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$settings_form['node_count'] = array(
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'#type' => 'checkbox',
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'#title' => t('Display number of nodes'),
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'#description' => t('Display the number of nodes associated with the term.'),
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'#default_value' => empty($settings['node_count']) ? FALSE : $settings['node_count'],
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'#weight' => -1,
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);
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}
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/**
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* Implements hook_shs_term_get_children_alter().
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*/
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function shs_node_count_shs_term_get_children_alter(&$terms, &$alter_options) {
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if (empty($alter_options['settings']['node_count']) || empty($alter_options['settings']['language']) || !isset($alter_options['parent'])) {
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// Nothing to do here.
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return;
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}
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$langcode = $alter_options['settings']['language']->language;
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$term = (object) array(
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'vid' => $alter_options['vid'],
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'tid' => 0,
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);
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$format = variable_get('shs_node_count_format', '%s (%d)');
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foreach ($terms as &$item) {
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array_walk($item[$langcode][$alter_options['parent']], function (&$name, $key) use ($term, $format) {
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$term->tid = $key;
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$count = shs_node_count_term_get_node_count($term, TRUE);
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$name = sprintf($format, $name, $count);
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});
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}
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}
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/**
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* Helper function to count number of nodes associated to a term.
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*
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* @param object $term
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* The term object.
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* @param bool $count_children
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* If set to TRUE, nodes in child terms are counted also.
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*
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* @return int
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* Number of nodes within the term.
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*/
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function shs_node_count_term_get_node_count($term, $count_children = FALSE) {
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$num_nodes = &drupal_static(__FUNCTION__, array());
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// Maybe this needs some more caching and value-updates on node_save()/
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// _update()/delete().
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if (empty($num_nodes["{$term->tid}:{$count_children}"])) {
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$index_table = 'taxonomy_index';
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if (module_exists('taxonomy_entity_index')) {
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$index_table = 'taxonomy_entity_index';
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}
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// Count nodes associated to this term.
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$num_nodes["{$term->tid}:{$count_children}"] = db_select($index_table, 'ti')
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->fields('ti')
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->condition('tid', $term->tid)
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->execute()
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->rowCount();
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if ($count_children) {
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$tids = array();
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$tree = taxonomy_get_tree($term->vid, $term->tid);
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foreach ($tree as $child_term) {
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$tids[] = $child_term->tid;
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}
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if (count($tids)) {
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$num_nodes["{$term->tid}:{$count_children}"] += db_select($index_table, 'ti')
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->fields('ti')
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->condition('tid', $tids, 'IN')
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->execute()
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->rowCount();
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}
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}
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}
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return isset($num_nodes["{$term->tid}:{$count_children}"]) ? $num_nodes["{$term->tid}:{$count_children}"] : 0;
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}
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