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<?php
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// $Id: betterselect.module,v 1.7 2008/09/08 01:02:12 setvik Exp $
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/**
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* @file
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* Use stylized checkboxes instead of the default multiple select HTML element.
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*
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* @todo: Fix bug with required elements; values don't seem to "take".
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*/
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/**
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* Implementation of hook_menu().
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*/
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function betterselect_menu() {
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$items = array();
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$items['admin/settings/betterselect'] = array(
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'title' => t('Better Select'),
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'description' => t('Configure better select settings.'),
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'page callback' => 'drupal_get_form',
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'page arguments' => array('betterselect_admin_settings'),
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'access arguments' => array('administer site configuration'),
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'type' => MENU_NORMAL_ITEM,
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);
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return $items;
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}
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/**
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* Build settings form().
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*/
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function betterselect_admin_settings() {
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$form['betterselect_scroll'] = array(
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'#type' => 'checkbox',
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'#title' => t('Place options in a scrollable div'),
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'#default_value' => variable_get('betterselect_scroll', FALSE),
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);
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$form['betterselect_node_form_only'] = array(
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'#type' => 'checkbox',
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'#title' => t('Only convert select lists on node forms'),
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'#default_value' => variable_get('betterselect_node_form_only', FALSE),
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);
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return system_settings_form($form);
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}
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/**
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* Implementation of hook_elements().
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*/
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function betterselect_elements() {
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$type = array();
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$type['select']['#process'] = array('betterselect_process');
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return $type;
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}
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/**
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* Form process callback; translates multiselect fields into checkboxes.
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*/
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function betterselect_process($element, $edit, $form_state, $complete_form) {
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if (isset($element['#multiple']) && $element['#multiple'] == TRUE && !(variable_get('betterselect_node_form_only', FALSE) == TRUE && $complete_form['#id'] != 'node-form')) {
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// If we're dealing with taxonomy, fix the option titles.
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if (is_object($element['#options'][0])) {
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// Build new array of options in format that theme_checkboxes expects.
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$options = array();
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$defaults = array();
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foreach ($element['#options'] as $option) {
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if (is_array($option->option)) {
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foreach ($option->option as $tid => $name) {
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$options[$tid] = check_plain($name);
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}
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}
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}
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$element['#options'] = $options;
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}
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// The default value should be an array, if it isn't expand_checkboxes()
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// will make it one.
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if (isset($element['#default_value']) && is_array($element['#default_value']) && count($element['#default_value'])) {
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// Fix the value arrays; checkboxes are the exact inverse of multiselect,
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// apparently for vindictive fun.
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// First make sure there's at least 1 non-blank array element
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$temp = $element['#default_value'];
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$temp = array_shift($element['#default_value']);
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if (!empty($temp)) {
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$element['#default_value'] = array_flip($element['#default_value']);
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$element['#value'] = array_flip($element['#value']);
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}
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}
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// Place options in a scrollable or non-scrollable div
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$div_class = variable_get('betterselect_scroll', FALSE) ? 'form-checkboxes-scroll' : 'form-checkboxes-noscroll';
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$element['#attributes'] = array('class' => $div_class);
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// Switch display to checkboxes instead.
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$element['#type'] = 'checkboxes';
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unset($element['#theme']);
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$element = expand_checkboxes($element);
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// Hide the silly "None" option. (assumes array element with a blank key is the "None" option)
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if (!$element['#required'] && is_array($element[''])) {
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$element['']['#prefix'] = '<div style="display:none">';
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$element['']['#suffix'] = '</div>';
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}
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// Include the JS and CSS files.
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static $path;
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if (!isset($path)) {
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$path = drupal_get_path('module', 'betterselect');
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drupal_add_css($path . '/betterselect.css');
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drupal_add_js($path . '/betterselect.js');
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}
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// Add the necessary prefix/suffix to make JS/CSS work.
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$size = isset($element['#size']) ? $element['#size'] : 10;
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$prefix = isset($element['#prefix']) ? $element['#prefix'] : '';
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$suffix = isset($element['#suffix']) ? $element['#suffix'] : '';
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$fixheight = count($element['#options']) > $size ? ' betterfixed' : '';
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$element['#prefix'] = '<div class="better-select' . $fixheight . '">' . $prefix;
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$element['#suffix'] = $suffix . '</div>';
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}
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return $element;
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}
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/**
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* Implementation of hook_form_alter().
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*/
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function betterselect_form_alter(&$form, $form_state, $form_id) {
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// Taxonomy stores its #options in a weird way; we need to move it back once we're done.
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if (($form['#id'] == 'node-form' && isset($form['taxonomy']))) {
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$form['#submit'][] = 'betterselect_taxonomy_from_checkboxes';
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}
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elseif ($form_id == 'taxonomy_form_term') {
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// betterselect has to process it before taxonomy module
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array_unshift($form['#submit'], 'betterselect_taxonomy_form_term_from_checkboxes');
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}
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}
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function betterselect_taxonomy_form_term_from_checkboxes($form, &$form_state) {
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$fix = array('parent', 'relations');
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foreach ($fix as $select) {
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$options = array();
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foreach ($form_state['values'][$select] as $tid => $selected) {
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if ($selected) {
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$options[$tid] = $tid;
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}
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}
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$form_state['values'][$select] = $options;
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}
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}
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/**
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* Restore submitted checkbox values back to format Taxonomy module expects.
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*/
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function betterselect_taxonomy_from_checkboxes($form, &$form_state) {
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foreach ($form_state['values']['taxonomy'] as $index => $properties) {
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if (is_numeric($index) && $form['taxonomy'][$index]['#multiple']) {
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$options = array();
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foreach ($form_state['values']['taxonomy'][$index] as $tid => $selected) {
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if ($selected) {
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$options[$tid] = $tid;
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}
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}
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$form_state['values']['taxonomy'][$index] = $options;
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}
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}
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}
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