franck@0: <?php
franck@0: // $Id: popups_reference.module,v 1.1.2.6 2009/01/18 22:40:33 starbow Exp $
franck@0: 
franck@0: /**
franck@0:  * @file
franck@0:  * Modify the Node Reference widget to use a popup to add a new node.
franck@0:  */ 
franck@0: 
franck@0: 
franck@0: /**
franck@0:  * Implementation of hook_form_alter().
franck@0:  * 
franck@0:  * Modifies the nodereference setting form and the basic node form. 
franck@0:  */
franck@0: function popups_reference_form_alter(&$form, $form_state, $form_id) {
franck@0:   if ($form_id == 'content_field_edit_form') {
franck@0:     // Add a checkbox to the nodereference settings page.
franck@0:     $field_name = $form['#field']['field_name'];
franck@0:     $form['field']['show_add_link'] = array(
franck@0:     '#type' => 'checkbox',
franck@0:       '#default_value' => variable_get('popups_reference_show_add_link_'. $field_name, TRUE),
franck@0:       '#title' => t('Show the "Add New: Node Type" Popup links'),
franck@0:       '#description' => t("Activate Popups:Add and Reference behavior for this reference.")
franck@0:     );
franck@0:     $form['#submit'][] = '_popups_reference_manage_fields_submit';
franck@0:   }
franck@0:   elseif (isset($form['type'])) {
franck@0:     // Add the "Add New: Node Type" links.
franck@0:     $node = $form['#node'];
franck@0:     if ($form['type']['#value'] .'_node_form' == $form_id) {  
franck@0:       $fields = content_fields();
franck@0:       foreach ($form as $key => $item) {
franck@0:         if (is_array($item)) {
franck@0:           $type = $item['#type'];
franck@0:           if ($type == 'fieldset') { // Loop through all the subitems.
franck@0:             foreach ($form[$key] as $subkey => $subitem) {
franck@0:               popups_reference_alter_item($form[$key], $subkey, $subitem, $fields);
franck@0:             }
franck@0:           }
franck@0:           else {
franck@0:             popups_reference_alter_item($form, $key, $item, $fields);
franck@0:           }
franck@0:         }
franck@0:         
franck@0:       }
franck@0:     }
franck@0:   }
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Implementation of hook_nodeapi().
franck@0:  * Add cookies with node info when a new node is created.
franck@0:  * These cookies will be found by the popups_reference behavior and used
franck@0:  *   to select the newly created node in the reference widget.
franck@0:  */ 
franck@0: function popups_reference_nodeapi($node, $op) {
franck@0:   if ($op == 'insert') {
franck@0:       $five = time()+300; // 5 minutes in the future.
franck@0:       setcookie("PopupRefNid", $node->nid, $five, '/'); 
franck@1:       setrawcookie("PopupRefTitle", rawurlencode($node->title), $five, '/');
franck@0:   }
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Submit added to the the nodereference settings form.
franck@0:  * Set a variable for each nodereference field.
franck@0:  */
franck@0: function _popups_reference_manage_fields_submit($form, &$form_state) {
franck@0:   $field_name = $form['#field']['field_name'];
franck@0:   variable_set('popups_reference_show_add_link_'. $field_name, $form_state['values']['show_add_link']);
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * Run on every element in the basic node form.
franck@0:  * Wrap the enabled nodereference fields, and add the popup links.
franck@0:  *
franck@0:  * @param $form - the form (or fieldgroup).
franck@0:  * @param $key - form element name.
franck@0:  * @param $item - the form element array.
franck@0:  * @param $fields - all fields info.
franck@0:  */
franck@0: function popups_reference_alter_item(&$form, $key, $item, $fields) {  
franck@0:   $field_name = strstr($key, 'field_'); // Check if $key starts with 'field_';
franck@0:   if (isset($fields[$field_name]) && 
franck@0:       $fields[$field_name]['type'] == 'nodereference' &&
franck@0:       variable_get('popups_reference_show_add_link_'. $field_name, TRUE)) {
franck@0:     $type = $form['type']['#value'];
franck@0:     $field = content_fields($field_name, $form['type']['#value']);
franck@0: 
franck@0:     $wrapper_id = 'popups-reference-' . _popups_reference_counter();
franck@0:     $links = _popups_reference_links($field, $type, $wrapper_id, $field['widget']['type']);
franck@0:     if ($links) {
franck@0:       // Put the nodereference widget and links in an wrapper.
franck@0:       // Makes it easy to find for Ahah targeting, and popups_reference behavior selecting.
franck@4:       $form[$key]['#popups_reference_prefix'] = '<div id="'. $wrapper_id .'">';
franck@4:       $form[$key]['#popups_reference_suffix'] = '<div>Add New: ' . implode(', ', $links) .'</div></div>';
franck@4:       $form[$key]['#after_build'][] = 'popups_reference_after_build';
franck@0:     }
franck@0:   }
franck@0: }
franck@0: 
franck@4: function popups_reference_after_build($form_element) {
franck@4:   $form_element['#prefix'] = $form_element['#popups_reference_prefix'] . $form_element['#prefix'];
franck@4:   $form_element['#suffix'] .= $form_element['#popups_reference_suffix'];
franck@4:   return $form_element;
franck@4: }
franck@4: 
franck@0: /**
franck@0:  * Generates 'Add new...' link
franck@0:  * for each allowed content type
franck@0:  *
franck@0:  * @param $field
franck@0:  * @param $src_type - the type of base node.
franck@0:  * @param $wrapper_id - id for the wrapper around the node reference.
franck@0:  * @param $type - the type of the node being referenced.
franck@0:  * @return Array of html links.
franck@0:  */
franck@0: function _popups_reference_links($field, $src_type, $wrapper_id, $type) {
franck@0:   if ($type == 'nodereference_select' || $type == 'nodereference_buttons') { 
franck@0:     // Target the wrapper for replacing.
franck@0:     popups_add_popups(array('a.'.$wrapper_id=>array('targetSelectors'=>array('#'.$wrapper_id))));
franck@0:   }
franck@0:   else if ($type == 'nodereference_autocomplete') { 
franck@0:     // Don't replace the autocomplete when done.
franck@0:     popups_add_popups(array('a.'.$wrapper_id=>array('noUpdate'=>TRUE)));
franck@0:   }
franck@0:   else { // Unsupported type.
franck@0:     return;
franck@0:   }
franck@0:   $options = array(
franck@0:     'attributes' => array(
franck@0:       'class' => $wrapper_id . ' popups-reference', 
franck@0:       'rel' => $wrapper_id,
franck@0:   ),
franck@0:     'query' => array('destination' => 'node/add/' . str_replace('_', '-', $src_type)),  
franck@0:   );
franck@0:   $links = array();
franck@0:   $all_types = node_get_types();
franck@0:   foreach ($field['referenceable_types'] as $add_type => $value) {
franck@0:     if (!empty($value) && user_access("create $add_type content")) {
franck@0:       drupal_add_js(drupal_get_path('module', 'popups_reference') .'/popups_reference.js');
franck@0:       $path = 'node/add/' . str_replace('_', '-', $add_type);
franck@0:       $links[] = l("Add $add_type", $path, $options);
franck@0:     }
franck@0:   }
franck@0:   return $links;
franck@0: }
franck@0: 
franck@0: /**
franck@0:  * A counter for generating unique element id's.
franck@0:  *
franck@0:  * @return int: next integer.
franck@0:  */
franck@0: function _popups_reference_counter() {
franck@0:   static $count = 0;
franck@0:   return $count++;
franck@0: }
franck@0: