'.t("Provides an easy to use control for adding multiple items.").'

'; break; } return $output; } /** * Implementation of hook_widget_info. * Specifies the label and that it is a widget for the nodereference field type */ function multiselect_widget_info() { return array( 'multiselect_select' => array( 'label' => t('Multiselect List'), 'field types' => array('nodereference'), ), ); } /** * Implementation of hook_widget * @todo Doesn't seem to populate list when in 'preview' (see http://drupal.org/node/139595) */ function multiselect_widget($op, &$node, $field, &$items) { switch ($op) { case 'prepare form values': $items_transposed = content_transpose_array_rows_cols($items); //to avoid an error being thrown in admin/content/types//field if(!isset($items_transposed['nid'])){ $items_transposed['nid']=array(); } $items['default nids'] = $items_transposed['nid']; //remove the null item. //it was causing a meaningless entry //(node with nid 0) to be in the selected list. $items['default nids'] = array_diff( $items['default nids'], array(0)); break; case 'form': $module_base_path = drupal_get_path('module','multiselect'); //inserts javascript drupal_add_js($module_base_path . '/multiselect.js'); //insert CSS (based on http://www.lullabot.com/articles/how_to_properly_add_css_files) //FALSE means it doesn't aggregate: as it's not used much //TODO: good decision? drupal_add_css($module_base_path . '/multiselect.css','module','all',FALSE); $form = array(); $options = _nodereference_potential_references($field, TRUE); foreach ($options as $key => $value) { $options[$key] = _nodereference_item($field, $value, FALSE); } $selected_options = array(); //If there already exists referenced nodes for this field, add them // to the selected options array (by order of their delta) if (is_array($items['default nids'])) { foreach($items['default nids'] as $delta => $nid) { $selected_options[$nid] = $options[$nid]; } } //anything in $alloptions but not in $selectedoptions is "not selected" $not_selected_options = array_diff($options,$selected_options); //reassign $options to reflect delta. //note: No new options are created in this list, //but putting selected options first ensures the form is populated in //the order of (thus maintaining) its deltas. $options = $selected_options + $not_selected_options; //create the containing form item $form[$field['field_name']] = array( '#type'=>'fieldset', '#title'=>t($field['widget']['label']), '#description' => t($field['widget']['description']), '#tree' => TRUE, '#attributes' => array('class'=>'multiselect'), '#all_options' => $options, '#after_build' => array('multiselect_fix_selected'), ); //the list of items currently selected $form[$field['field_name']]['selected'] = array( '#title' => t("selected"), '#attributes' => array('class' => "container-inline selected multiselect", 'id' => $field['field_name']), '#type' => 'select', '#weight' => 3, '#options' => $selected_options, '#size' => 10, '#multiple' => TRUE, ); //the list of items currently not selected $form[$field['field_name']]['unselected'] = array( '#title' => t("unselected"), '#attributes' => array('class' => "container-inline unselected multiselect", 'id' => $field['field_name']), '#type' => 'select', '#weight' => 0, '#options' => $not_selected_options, '#size' => 10, '#multiple' => TRUE, ); /* * The buttons to (de)select objects are implemented as field markup * with an associated javascript function onclick */ //name attribute of the associated select elements $selected_name = $field['field_name'].'[selected][]'; $unselected_name = $field['field_name'].'[unselected][]'; $form[$field['field_name']]['select'] = array( '#type' => 'markup', '#submit'=> false, '#value' => ' ", '#weight' => 1, '#attributes' => array('class' => 'select'), ); $form[$field['field_name']]['deselect'] = array( '#type' => 'markup', '#submit'=> false, '#value' => ' ", '#weight' => 2, ); return $form; case 'process form values': if ($field['multiple']) { //adjust perspective $items['nids'] = $items['selected']; unset($items['selected']); unset($items['unselected']); // if nothing selected, make it 'none' if (empty($items['nids'])) { $items['nids'] = array(0 => '0'); } $items = array_values(content_transpose_array_rows_cols(array('nid' => $items['nids']))); } else { $items[0]['nid'] = $items['nids']; } // Remove the widget's data representation so it isn't saved. // unset($items['nids']); foreach ($items as $delta => $item) { $items[$delta]['error_field'] = $field['field_name'] .'][nids'; } case 'validate': } } /** * Alters the preview form to include the newly added items */ function multiselect_fix_selected($field, $edit) { if( isset($field['#post']) && !empty($field['#post'])){ $field_id = $field['selected']['#attributes']['id']; $selected = $field['selected']['#post'][$field_id]['selected']; $field['selected']['#options'] = array(); $field['unselected']['#options'] = $field['#all_options']; if ( !is_null($selected) ){ foreach( $selected as $selected_nid ) { $field['selected']['#options'][$selected_nid] = $field['#all_options'][$selected_nid]; unset($field['unselected']['#options'][$selected_nid]); } } } return $field; } /** * Implementation of hook_nodeapi. * @todo The adding of javascript can be moved to the _widget function. */ function multiselect_nodeapi(&$node, $op, $teaser, $page) { /* switch ($op) { case 'prepare': }*/ }