'.t("Provides an easy to use control for adding multiple items.").'';
break;
}
return $output;
}
/**
* Implementation of hook_perm
* @todo Need to check permissions make sense
*/
function multiselect_perm()
{
return array('access multiselect_module'); //?
}
/**
* Implementation of hook_widget_info.
* Specifies the label and that it is a widget for the nodereference field type
*/
function multiselect_widget_info()
{
return array(
'multiselect_select' => array(
'label' => t('Multiselect List'),
'field types' => array('nodereference'),
),
);
}
/**
* Implementation of hook_widget
* @todo Doesn't seem to populate list when in 'preview' (see http://drupal.org/node/139595)
*/
function multiselect_widget($op, &$node, $field, &$items) {
switch ($op) {
case 'prepare form values':
$items_transposed = content_transpose_array_rows_cols($items);
$items['default nids'] = $items_transposed['nid'];
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, $value, FALSE);
}
//If there already exists referenced nodes for this field, add them
// to the selected options array (by order of their delta)
if (is_array($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']),
'#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':
}*/
}
?>