New module 'Autocomplete Widgets'
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<?php
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/**
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* @file
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* Provides autocomplete widgets for CCK Text and Number fields.
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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 autocomplete_widgets_menu() {
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$items = array();
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$items['autocomplete_widgets'] = array(
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'title' => 'Autocomplete Widgets',
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'page callback' => 'autocomplete_widgets_json',
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'access callback' => 'autocomplete_widgets_access',
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'access arguments' => array(1, 2),
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'type' => MENU_CALLBACK,
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);
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return $items;
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}
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/**
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* Implementation of hook_theme().
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*/
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function autocomplete_widgets_theme() {
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return array(
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'autocomplete_widgets' => array('arguments' => array('element' => NULL)),
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);
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}
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/**
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* Implementation of hook_views_api().
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*/
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function autocomplete_widgets_views_api() {
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return array(
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'api' => 3.0,
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'path' => drupal_get_path('module', 'autocomplete_widgets') . '/views',
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);
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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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* Because we need to alter the field settings form, this module needs
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* to be loaded after CCK Text/Number field modules.
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* See autocomplete_widgets_install().
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*/
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function autocomplete_widgets_form_alter(&$form, $form_state, $form_id) {
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// Provide additional help for the field settings form.
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if ($form_id == 'content_field_edit_form' && isset($form['widget'])) {
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module_load_include('inc', 'autocomplete_widgets', 'autocomplete_widgets.admin');
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_autocomplete_widgets_content_field_edit_form_alter($form, $form_state);
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}
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}
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/**
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* Implementation of hook_widget_info().
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*/
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function autocomplete_widgets_widget_info() {
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return array(
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'autocomplete_widgets_allowvals' => array(
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'label' => t('Autocomplete for allowed values list'), 'field types' => array('text', 'number_integer', 'number_decimal', 'number_float'),
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),
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'autocomplete_widgets_flddata' => array(
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'label' => t('Autocomplete for existing field data'), 'field types' => array('text'),
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),
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);
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}
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/**
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* Implementation of hook_elements().
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*
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* Autocomplete_path is not used by text_widget but other widgets can use it
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* (see nodereference and userreference).
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*/
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function autocomplete_widgets_elements() {
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return array(
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'autocomplete_widgets' => array(
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'#input' => TRUE,
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'#columns' => array('value'), '#delta' => 0,
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'#process' => array('autocomplete_widgets_process'),
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'#autocomplete_path' => FALSE,
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),
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);
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}
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/**
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* Implementation of hook_widget_settings().
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*/
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function autocomplete_widgets_widget_settings($op, $widget) {
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module_load_include('inc', 'autocomplete_widgets', 'autocomplete_widgets.admin');
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return _autocomplete_widgets_widget_settings($op, $widget);
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}
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/**
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* Implementation of hook_widget().
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*/
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function autocomplete_widgets_widget(&$form, &$form_state, $field, $items, $delta = 0) {
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return array(
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'#type' => 'autocomplete_widgets',
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'#default_value' => isset($items[$delta]) ? $items[$delta] : NULL,
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);
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}
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/**
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* Process an individual textfield autocomplete element.
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*/
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function autocomplete_widgets_process($element, $edit, $form_state, $form) {
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$field = $form['#field_info'][$element['#field_name']];
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$field_key = $element['#columns'][0];
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$value = NULL;
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if ($field['widget']['type'] == 'autocomplete_widgets_allowvals') {
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if (isset($element['#value'][$field_key])) {
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$keys = array($element['#value'][$field_key]);
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module_load_include('inc', 'autocomplete_widgets', 'autocomplete_widgets.common');
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$options = _autocomplete_widgets_get_options($field, '', '', $keys, 1);
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if (!empty($options)) {
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$value = current($options);
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}
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}
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}
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else if ($field['widget']['type'] == 'autocomplete_widgets_flddata') {
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if (isset($element['#value'][$field_key])) {
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$value = $element['#value'][$field_key];
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}
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}
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$element[$field_key] = array(
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'#type' => 'textfield',
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'#default_value' => $value,
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'#autocomplete_path' => 'autocomplete_widgets/'. $element['#type_name'] .'/'. $element['#field_name'],
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'#size' => !empty($field['widget']['size']) ? $field['widget']['size'] : 60,
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'#attributes' => array('class' => 'text'),
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// The following values were set by the content module and need
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// to be passed down to the nested element.
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'#title' => $element['#title'],
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'#description' => $element['#description'],
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'#required' => $element['#required'],
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'#field_name' => $element['#field_name'],
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'#type_name' => $element['#type_name'],
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'#delta' => $element['#delta'],
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'#columns' => $element['#columns'],
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);
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$element[$field_key]['#maxlength'] = !empty($field['max_length']) ? $field['max_length'] : NULL;
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if (empty($element[$field_key]['#element_validate'])) {
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$element[$field_key]['#element_validate'] = array();
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}
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array_unshift($element[$field_key]['#element_validate'], 'autocomplete_widgets_validate');
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$element['_error_element'] = array(
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'#type' => 'value',
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'#value' => implode('][', array_merge($element['#parents'], array($field_key))),
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);
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return $element;
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}
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/**
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* Validate a textfield autocomplete element.
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*/
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function autocomplete_widgets_validate($element, &$form_state) {
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$field_name = $element['#field_name'];
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$type_name = $element['#type_name'];
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$delta = $element['#delta'];
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$field = content_fields($field_name, $type_name);
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$field_key = $element['#columns'][0];
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$value = trim($element['#value']);
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if ($field['widget']['type'] == 'autocomplete_widgets_allowvals') {
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if ($value !== '') {
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module_load_include('inc', 'autocomplete_widgets', 'autocomplete_widgets.common');
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$options = _autocomplete_widgets_get_options($field, $value, 'equals', NULL, 1);
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if (empty($options)) {
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form_error($element, t('%name: found no valid option.', array('%name' => $field['widget']['label'])));
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}
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else {
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$value = key($options);
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}
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}
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}
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// Remove the wrapper layer and set the right element's value.
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// This will move the nested value at 'field-name-0-value-value'
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// back to its original location, 'field-name-0-value'.
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form_set_value($element, $value, $form_state);
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}
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/**
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* Check access to the menu callback of the autocomplete widget.
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*/
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function autocomplete_widgets_access($type_name, $field_name) {
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return user_access('access content') && ($field = content_fields($field_name, $type_name)) && content_access('view', $field) && content_access('edit', $field);
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}
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/**
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* Menu callback; Retrieve a pipe delimited string of autocomplete suggestions.
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*/
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function autocomplete_widgets_json($type_name, $field_name, $string = '') {
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module_load_include('inc', 'autocomplete_widgets', 'autocomplete_widgets.common');
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$field = content_fields($field_name, $type_name);
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$match = isset($field['widget']['autocomplete_match']) ? $field['widget']['autocomplete_match'] : 'contains';
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$matches = array();
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$options = _autocomplete_widgets_get_options($field, $string, $match, NULL, 10);
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foreach ($options as $key => $value) {
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// Add a class wrapper for a few required CSS overrides.
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$matches[$value] = '<div class="reference-autocomplete">'. check_plain($value) .'</div>';
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}
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drupal_json($matches);
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}
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/**
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* Theme an individual textfield autocomplete element.
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*/
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function theme_autocomplete_widgets($element) {
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return $element['#children'];
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}
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