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<?php
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/**
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* @file
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* Implements pusdeo-hook hook_field_diff_view() for the Taxonomy module.
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*/
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/**
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* Diff field callback for preloading term entities.
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*/
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function taxonomy_field_diff_view_prepare(&$old_items, &$new_items, $context) {
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$tids = array();
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foreach (array_merge_recursive($old_items, $new_items) as $info) {
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$tids[$info['tid']] = $info['tid'];
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}
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$terms = taxonomy_term_load_multiple($tids);
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foreach ($old_items as $delta => $info) {
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$old_items[$delta]['term'] = isset($terms[$info['tid']]) ? $terms[$info['tid']] : NULL;
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}
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foreach ($new_items as $delta => $info) {
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$new_items[$delta]['term'] = isset($terms[$info['tid']]) ? $terms[$info['tid']] : NULL;
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}
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}
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/**
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* Diff field callback for parsing term field comparative values.
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*/
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function taxonomy_field_diff_view($items, $context) {
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$settings = $context['settings'];
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$instance = $context['instance'];
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$diff_items = array();
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foreach ($items as $delta => $item) {
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if (!empty($item['tid'])) {
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if ($item['tid'] == 'autocreate') {
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$diff_items[$delta] = t('!term_name (new)', array('!term_name' => $item['name']));
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}
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elseif (empty($item['term'])) {
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$diff_items[$delta] = t('Missing term reference (!tid)', array('!tid' => $item['tid']));
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}
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else {
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$output = array();
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$output['name'] = $item['term']->name;
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if ($settings['show_id']) {
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$output['tid'] = t('Term ID: !tid', array('!tid' => $item['term']->tid));
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}
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$diff_items[$delta] = implode('; ', $output);
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}
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}
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}
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if (!empty($settings['sort']) && !empty($diff_items)) {
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if ($settings['sort'] == DIFF_SORT_VALUE || $instance['widget']['type'] == 'taxonomy_autocomplete') {
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usort($diff_items, 'uasort_taxonomy_field_diff_terms');
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}
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}
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return $diff_items;
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}
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/**
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* Helper function for sorting terms.
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*/
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function uasort_taxonomy_field_diff_terms($a, $b) {
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// We need to use t() to test for string overrides.
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$missing_text = t('Missing term reference');
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$a_missing = strpos($a, $missing_text) === 0;
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$b_missing = strpos($b, $missing_text) === 0;
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if ($a_missing && $b_missing) {
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return strnatcmp($a, $b);
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}
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elseif ($a_missing xor $b_missing) {
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return $a_missing ? 100 : -100;
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}
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return strnatcmp($a, $b);
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}
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/**
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* Provide default field comparison options.
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*/
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function taxonomy_field_diff_default_options($field_type) {
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return array(
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'show_id' => 0,
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'sort' => DIFF_SORT_CUSTOM,
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);
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}
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/**
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* Provide a form for setting the field comparison options.
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*/
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function taxonomy_field_diff_options_form($field_type, $settings) {
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$options_form = array();
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$options_form['show_id'] = array(
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'#type' => 'checkbox',
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'#title' => t('Show term ID'),
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'#default_value' => $settings['show_id'],
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);
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$options_form['sort'] = array(
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'#type' => 'radios',
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'#title' => t('Sort'),
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'#options' => array(
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DIFF_SORT_NONE => t('No sort'),
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DIFF_SORT_VALUE => t('Sort'),
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DIFF_SORT_CUSTOM => t('Sort if free tagging field'),
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),
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'#default_value' => $settings['sort'],
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);
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return $options_form;
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}
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