franck@0: <?php
franck@0: // vim: set ts=2 sw=2 expandtab syntax=php:
franck@0: 
franck@0: /**
franck@0:  * @file 
franck@0:  * Fichier principale du module noderef_view
franck@0:  * 
franck@0:  * Ce module permet d'ajouter à tous les champs de type "Node Reference"
franck@1:  * pour lesquels une vue définissant les nodes autorisés a été définie
franck@1:  * un lien 'Search' affichant la vue dans une popup (via le module Popups API),
franck@0:  * permettant de choisir les nodes à mettre dans le champ en disposant de la
franck@1:  * puissance de Views pour la recherche (Exposed Filters notamment).
franck@0:  */
franck@0: 
franck@0: /**
franck@0:  * Implémentation de hook_view_action_info().
franck@0:  * 
franck@0:  * On crée une nouvelle action, nommée Select, et qui sera utilisée pour marquer
franck@0:  * les nodes comme données à utiliser. L'utilisation concrète qui en est faite
franck@0:  * dans ce module consiste à utiliser ces nœuds selectionés pour les ajouter
franck@0:  * dans le champ Node Reference étant à l'origine de la recherche.
franck@0:  */
franck@0: function noderef_view_action_info() {
franck@0:   return array(
franck@0:     'noderef_view_select' => array(
franck@9:       'description'  => t('Add selected values to field'),
franck@0:       'type'         => 'node',
franck@0:       'configurable' => FALSE,
franck@0:       'hooks' => array(
franck@0:         'nodeapi' => array()
franck@0:       )
franck@0:     )
franck@0:   );
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Implémentation concrète de l'action de selection.
franck@0:  * 
franck@0:  * On vide toute eventuelle selection précédente, puis on passe dans le cookie
franck@0:  * les informations sur la selection qui a été faite.
franck@0:  */
franck@0: function noderef_view_select($node, $context) {
franck@0:   static $count = 0;
franck@0:   if ($count == 0 && is_array($_COOKIE['noderef'])) {
franck@0:     // Reset the cookies
franck@0:     $before = time() - 300;
franck@0:     foreach($_COOKIE['noderef'] as $id => $val) {
franck@0:       setcookie('noderef['. $id .']', 0, $before, '/');
franck@0:     }
franck@0:   }
franck@0:   $count++;
franck@0:   $five = time() + 300;
franck@0:   setrawcookie('noderef['. $node->nid .']', rawurlencode($node->title), $five, '/');
franck@11:   drupal_set_message(t('!title added to selection', 
franck@11:     array('!title' => $node->title)));
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Implémentation de hook_form_alter().
franck@0:  *
franck@0:  * On parcoure tous les formulaires à la recherche d'éventuels champs
franck@0:  * de type "Node Reference" sur lesquels appliqués nos transformations.
franck@0:  */
franck@0: function noderef_view_form_alter(&$form, $form_state, $form_id) {
franck@0:   if (isset($form['type']) && $form_id == $form['type']['#value'] .'_node_form') {
franck@0:     // That's a node form, get the fields and alter the form if needed
franck@0:     $fields = content_fields();
franck@11:     $alter = _noderef_view_walk_form($form, $fields, $form);
franck@0:     if ($alter) {
franck@0:       // We've changed the form, add the JS-behavior and Views CSS
franck@0:       // (the latter to deal with exposed filters in the popup)
franck@6:       $path = drupal_get_path('module', 'noderef_view');
franck@6:       drupal_add_js($path .'/noderef_view.js');
franck@6:       drupal_add_css($path .'/noderef_view.css');
franck@0:       drupal_add_css(drupal_get_path('module', 'views') .'/css/views.css');
franck@0:     }
franck@0:   }
franck@0:   elseif ($form_id == 'views_exposed_form' && isset($_GET['destination'])) {
franck@0:     // Views "Exposed Filter" forms doesn't preserve destination by default.
franck@0:     $form['destination'] = array(
franck@0:       '#type' => 'hidden',
franck@0:       '#value' => $_GET['destination']
franck@0:     );
franck@0:   }
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Parcoure le tableau contenant le formulaire à la recherche
franck@0:  * d'élement à modifier.
franck@0:  * @return
franck@0:  *   TRUE si un élement a été modifié, FALSE sinon
franck@0:  */
franck@11: function _noderef_view_walk_form(&$form, $fields, $items) {
franck@0:   $alter = FALSE;
franck@11:   foreach($items as $key => $item) {
franck@0:     if (is_array($item)) {
franck@0:       if (isset($fields[$key])) {
franck@0:         $alter |= noderef_view_alter_item($form, $key, $fields[$key]);
franck@0:       }
franck@0:       else {
franck@11:         $alter |= _noderef_view_walk_form($form, $fields, $item);
franck@0:       }
franck@0:     }
franck@0:   }
franck@0:   return $alter;
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Modification d'un élement en particulier du formulaire.
franck@0:  *
franck@0:  * @return 
franck@0:  *   TRUE si l'element a été modifié, FALSE sinon.
franck@0:  */
franck@0: function noderef_view_alter_item(&$form, $key, $field) {
franck@0:   if (is_array($field) && $field['type'] == 'nodereference') {
franck@2:     $link = _noderef_view_get_link($field);
franck@0:     if (!empty($link)) {
franck@0:       return TRUE;
franck@0:     }
franck@0:   }
franck@0:   return FALSE;
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Création d'un lien vers une éventuelle vue associé au champ.
franck@0:  *
franck@0:  * @return
franck@0:  *  - Un lien vers la vue si une vue est associée
franck@0:  *  - Une chaine vide sinon
franck@11:  */ 
franck@0: function _noderef_view_get_link($field) {
franck@0:   $path = '';
franck@0:   // Check if there's a view associated with this field
franck@0:   if (isset($field['advanced_view']) && $field['advanced_view'] !== '--') {
franck@0:     $view = views_get_view($field['advanced_view']);
franck@0:     // Try to find a path for this view, looking at the displays
franck@13:     if (!is_array($view->display)) {
franck@13:       return '';
franck@13:     }
franck@0:     $path = '';
franck@0:     foreach($view->display as $display) {
franck@0:       if (is_array($display->display_options) 
franck@0:         && isset($display->display_options['path'])) {
franck@0:         $path = $display->display_options['path'];
franck@2:         break;
franck@0:       }
franck@0:     }
franck@0:   }
franck@0:   // If we found a view with a suitable display, then link to it
franck@0:   if (!empty($path)) {
franck@0:     popups_add_popups();
franck@0:     $options = array(
franck@12:       'attributes' => array('class' => 'popups-form-noupdate noderef_view_link'),
franck@0:       'query' => array('destination' => 'node')
franck@0:     );
franck@0:     $path = l(t('Search'), $path, $options);
franck@0:   }
franck@2:   return $path;
franck@0: }
franck@0: 
franck@11: function noderef_view_theme() {
franck@11:   return array(
franck@11:     'noderef_view_autocomplete' => array(
franck@11:       'arguments' => array('element' => NULL)
franck@11:     )
franck@11:   );
franck@11: }
franck@11: 
franck@11: function noderef_view_widget_info() {
franck@11:   return array(
franck@11:     'noderef_view_autocomplete' => array(
franck@11:       'label' => t('Autocomplete text field with View'),
franck@11:       'field types' => array('nodereference'),
franck@11:       'multiple values' => CONTENT_HANDLE_CORE,
franck@11:       'callbacks' => array(
franck@11:         'default value' => CONTENT_CALLBACK_DEFAULT,
franck@11:       ),
franck@11:     ),
franck@11:   );
franck@11: }
franck@11: 
franck@11: function noderef_view_elements() {
franck@11:   return array(
franck@11:    'noderef_view_autocomplete' => array(
franck@11:       '#input' => TRUE,
franck@11:       '#columns' => array('name'), '#delta' => 0,
franck@11:       '#process' => array('noderef_view_autocomplete_process'),
franck@11:       '#autocomplete_path' => FALSE,
franck@11:       ),
franck@11:   );
franck@11: }
franck@11: 
franck@11: function noderef_view_widget(&$form, &$form_state, $field, $items, $delta = 0) {
franck@11:   switch ($field['widget']['type']) {
franck@11:     case 'noderef_view_autocomplete':
franck@11:       $element = array(
franck@11:         '#type' => 'noderef_view_autocomplete',
franck@11:         '#default_value' => isset($items[$delta]) ? $items[$delta] : NULL,
franck@11:         '#value_callback' => 'nodereference_autocomplete_value',
franck@11:       );
franck@11:       break;
franck@11:   }
franck@11:   return $element;
franck@11: }
franck@11: 
franck@11: /**
franck@11:  * Process an individual element.
franck@11:  *
franck@11:  * Build the form element. When creating a form using FAPI #process,
franck@11:  * note that $element['#value'] is already set.
franck@11:  *
franck@11:  */
franck@11: function noderef_view_autocomplete_process($element, $edit, $form_state, $form) {
franck@11:   // The nodereference autocomplete widget doesn't need to create its own
franck@11:   // element, it can wrap around the text_textfield element and add an autocomplete
franck@11:   // path and some extra processing to it.
franck@11:   // Add a validation step where the value can be unwrapped.
franck@11:   $fields     = content_fields();
franck@11:   $link       = _noderef_view_get_link($fields[$element['#field_name']]);
franck@11:   $field_key  = $element['#columns'][0];
franck@11:   $element[$field_key] = array(
franck@11:     '#type' => 'text_textfield',
franck@11:     '#default_value' => isset($element['#value']) ? $element['#value'] : '',
franck@11:     '#autocomplete_path' => 'nodereference/autocomplete/'. $element['#field_name'],
franck@11:     // The following values were set by the content module and need
franck@11:     // to be passed down to the nested element.
franck@11:     '#title' => $element['#title'],
franck@11:     '#required' => $element['#required'],
franck@11:     '#description' => $element['#description'],
franck@11:     '#field_name' => $element['#field_name'],
franck@11:     '#type_name' => $element['#type_name'],
franck@11:     '#delta' => $element['#delta'],
franck@11:     '#columns' => $element['#columns'],
franck@11:   );
franck@11:   if ($link) {
franck@11:     $element[$field_key]['#noderef_view_link'] = $link;
franck@11:     $element[$field_key]['#prefix'] = "<div class='noderef-view-wrapper'>";
franck@11:     $element[$field_key]['#suffix'] = $link ."</div>";
franck@11:   }
franck@11:   if (empty($element[$field_key]['#element_validate'])) {
franck@11:     $element[$field_key]['#element_validate'] = array();
franck@11:   }
franck@11:   array_unshift($element[$field_key]['#element_validate'], 'nodereference_autocomplete_validate');
franck@11: 
franck@11:   // Used so that hook_field('validate') knows where to flag an error.
franck@11:   $element['_error_element'] = array(
franck@11:     '#type' => 'value',
franck@11:     // Wrapping the element around a text_textfield element creates a
franck@11:     // nested element, so the final id will look like 'field-name-0-nid-nid'.
franck@11:     '#value' => implode('][', array_merge($element['#parents'], array($field_key, $field_key))),
franck@11:   );
franck@11:   return $element;
franck@11: }
franck@11: 
franck@11: function theme_noderef_view_autocomplete($element) {
franck@11:   return <<<EOT
franck@11: <div class='noderef-view-wrapper'>
franck@11:    {$element['#children']}
franck@11:    {$element['#noderef_view_link']}
franck@11:    <span class='clear-block'></span>
franck@11: </div>
franck@11: EOT;
franck@11: }