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<?php
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// $Id: term_display.module,v 1.11 2009/03/15 17:41:41 flanker Exp $
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define('TERM_DISPLAY_DEFAULT', 'default');
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define('TERM_DISPLAY_LIST', 'list');
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define('TERM_DISPLAY_CUSTOM', 'custom');
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define('TERM_DISPLAY_NONE', 'none');
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define('TERM_DISPLAY_LOAD', 'load');
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/**
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* Implementation of hook_theme().
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*/
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function term_display_theme() {
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return array(
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'term_display_list' => array(
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'file' => 'term_display.module',
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'arguments' => array(
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'vocabulary' => NULL,
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'terms' => NULL,
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),
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),
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'term_display_custom' => array(
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'file' => 'term_display.module',
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'arguments' => array(
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'vocabulary' => NULL,
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'terms' => NULL,
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),
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),
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);
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}
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/**
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* Theme terms as a list.
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*/
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function theme_term_display_list($vocabulary, $terms) {
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$links = array();
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foreach ($terms as $term) {
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$links[] = l($term->name, taxonomy_term_path($term));
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}
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return theme('item_list', $links, check_plain($vocabulary->name), 'ul', array('class' => 'vocabulary-list'));
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}
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/**
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* Theme terms as a comma-separated list.
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*/
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function theme_term_display_custom($vocabulary, $terms) {
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$links = array();
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foreach ($terms as $term) {
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$links[] = l($term->name, taxonomy_term_path($term));
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}
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return '<h3 class="title">' . check_plain($vocabulary->name) . ': ' . implode(', ', $links) . '</h3>';
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}
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/**
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* Implementation of hook_form_alter().
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*/
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function term_display_form_taxonomy_form_vocabulary_alter(&$form, &$form_state) {
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$vid = isset($form['vid']) ? $form['vid']['#value'] : NULL;
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$term_display_data = term_display_data($vid);
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// Lighten the identification fieldset so it's above ours.
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$form['identification']['#weight'] = -1;
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$form['term_display'] = array(
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'#type' => 'fieldset',
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'#title' => t('Display options'),
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'#collapsible' => TRUE,
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'#collapsed' => FALSE,
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'#description' => t('Set display options on content view for terms in this vocabulary.'),
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'#weight' => -0.5,
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);
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$options = array(
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TERM_DISPLAY_DEFAULT => t('Default'),
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TERM_DISPLAY_LIST => t('List'),
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TERM_DISPLAY_CUSTOM => t('Custom (defaults to comma separated)'),
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TERM_DISPLAY_LOAD => t('Load into $node object'),
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TERM_DISPLAY_NONE => t('None (hidden)'),
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);
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$form['term_display']['term_display_style'] = array(
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'#type' => 'select',
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'#title' => t('Display style'),
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'#options' => $options,
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'#default_value' => $term_display_data['style'],
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'#description' => t('Select if and how you wish terms to appear on content (node) display.'),
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);
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$form['term_display']['term_display_weight'] = array(
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'#type' => 'weight',
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'#title' => t('Display weight'),
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'#default_value' => $term_display_data['weight'],
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'#description' => t('Set a weight for term display to control where terms appear in the content body. Set a low weight to move terms to the top of the content or a high one to move them to the bottom. Applies only when display style is set to "list" or "custom". This option is for advanced usage only; usually it\'s best to leave this at 0.'),
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);
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}
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/**
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* Implementation of hook_taxonomy().
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*/
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function term_display_taxonomy($op, $type, $object = NULL) {
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if ($type == 'vocabulary') {
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if (isset($object['term_display_style']) && isset($object['term_display_weight'])) {
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switch ($op) {
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case 'update':
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// First, try an update.
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db_query("UPDATE {term_display} SET style = '%s', weight = %d WHERE vid = %d", $object['term_display_style'], $object['term_display_weight'], $object['vid']);
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// There will be no rows if this we are editing for the first time a term that was created before
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// term_display was enabled. In that case, we need an insert.
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if (db_affected_rows()) {
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break;
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}
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// Fall through.
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case 'insert':
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db_query("INSERT INTO {term_display} (vid, style, weight) VALUES (%d, '%s', %d)", $object['vid'], $object['term_display_style'], $object['term_display_weight']);
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break;
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}
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}
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if ($op == 'delete') {
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db_query('DELETE FROM {term_display} WHERE vid = %d', $object['vid']);
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}
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}
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}
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/**
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* Fetch term display data for a vocabulary or defaults if there are no registered data.
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*/
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function term_display_data($vid) {
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static $term_display_data;
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if (empty($term_display_data)) {
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$result = db_query('SELECT vid, style, weight FROM {term_display}');
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while ($vocabulary = db_fetch_array($result)) {
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$term_display_data[$vocabulary['vid']] = $vocabulary;
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}
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}
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if (isset($term_display_data[$vid])) {
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return $term_display_data[$vid];
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}
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else {
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return array(
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'style' => TERM_DISPLAY_DEFAULT,
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'weight' => 0,
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);
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}
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}
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/**
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* Implementation of hook_nodeapi().
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*/
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function term_display_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
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switch ($op) {
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case 'view':
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if (isset($node->taxonomy)) {
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$vocabularies = taxonomy_get_vocabularies($node->type);
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foreach ($vocabularies as $vocabulary) {
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$term_display_data = term_display_data($vocabulary->vid);
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if ($term_display_data['style'] == TERM_DISPLAY_DEFAULT) {
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continue;
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}
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$terms = array();
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foreach ($node->taxonomy as $tid => $term) {
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if ($term->vid == $vocabulary->vid) {
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switch ($term_display_data['style']) {
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case TERM_DISPLAY_LIST:
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case TERM_DISPLAY_LOAD:
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case TERM_DISPLAY_CUSTOM:
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$terms[$tid] = $term;
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// Fall through.
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case TERM_DISPLAY_NONE:
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unset($node->taxonomy[$tid]);
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break;
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}
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}
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}
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if (!empty($terms)) {
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if ($term_display_data['style'] != TERM_DISPLAY_LOAD) {
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$node->content['term_display_'. $vocabulary->vid] = array(
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'#weight' => $term_display_data['weight'],
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'#value' => theme('term_display_'. $term_display_data['style'], $vocabulary, $terms),
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);
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}
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else {
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$node->term_display[$vocabulary->vid]['vocabulary_name'] = check_plain($vocabulary->name);
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$node->term_display[$vocabulary->vid]['terms'] = $terms;
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}
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}
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}
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}
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break;
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}
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}
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