<?php
// $Id: optionwidgets.module,v 1.10.2.3 2007-01-07 14:43:32 yched Exp $

/**
 * @file
 * Defines selection, check box and radio button widgets for text and numeric fields.
 */

/**
 * Implementation of hook_widget_info().
 */
function optionwidgets_widget_info() {

  $option_types = array('text', 'number_integer', 'number_decimal');
  return array(
    'options_select' => array(
      'label' => 'Select list',
      'field types' => $option_types,
    ),
    'options_buttons' => array(
      'label' => 'Check boxes/radio buttons',
      'field types' => $option_types,
    ),
  );
}

/**
 * Implementation of hook_widget_settings().
 */
function optionwidgets_widget_settings($op, $widget) {
  $form = array();
  switch ($op) {
    case 'form':
      $form['#prefix'] = t('Create a list of options as a list in Allowed values or as an array in Php code at the bottom of this page. These values will be the same for the %field in all content types. The Check boxes/radio buttons widget will display checkboxes if the multiple values option is selected for this field, otherwise radios will be displayed.', array('%field' => $widget['label']));
  }
  return $form;
}

/**
 * Implementation of hook_widget().
 */
function optionwidgets_widget($op, &$node, $field, &$node_field) {
  switch ($op) {
    case 'prepare form values':
      $options = _optionwidgets_options($field);
      $node_field_transposed = content_transpose_array_rows_cols($node_field);
      $values = (isset($node_field_transposed['value']) && is_array($node_field_transposed['value'])) ? $node_field_transposed['value'] : array();

      $keys = array();
      foreach ($values as $value) {
        $key = array_search($value, array_keys($options));
        if (isset($key)) {
          $keys[] = $value;
        }
      }
      if ($field['multiple']) {
        $node_field['default keys'] = $keys;
      }
      else {
        $node_field['default key'] = reset($keys);
      }
      break;

    case 'form':
      $options = _optionwidgets_options($field);

      $form = array();

      $form[$field['field_name']] = array('#tree' => TRUE);

      switch ($field['widget']['type']) {
        case 'options_select':
          if (!$field['required']) $options = array('' => theme('optionwidgets_none', $field['widget']['type'], $field['field_name'], $node->type)) + $options;
          if ($field['multiple']) {
            $form[$field['field_name']]['keys'] = array(
              '#type' => 'select',
              '#title' => t($field['widget']['label']),
              '#default_value' => $node_field['default keys'],
              '#multiple' => TRUE,
              '#options' => $options,
              '#required' => $field['required'],
              '#description' => $field['widget']['description'],
            );
          }
          else {
            $form[$field['field_name']]['key'] = array(
              '#type' => 'select',
              '#title' => t($field['widget']['label']),
              '#default_value' => $node_field['default key'],
              '#multiple' => FALSE,
              '#options' => $options,
              '#required' => $field['required'],
              '#description' => $field['widget']['description'],
            );
          }
          break;

        case 'options_buttons':
          if ($field['multiple']) {
            $form[$field['field_name']]['keys'] = array(
              '#type' => 'checkboxes',
              '#title' => t($field['widget']['label']),
              '#default_value' => $node_field['default keys'],
              '#options' => $options,
              '#required' => $field['required'],
              '#description' => $field['widget']['description'],
            );
          }
          else {
            if (!$field['required']) $options = array('' => theme('optionwidgets_none', $field['widget']['type'], $field['field_name'], $node->type)) + $options;
            $form[$field['field_name']]['key'] = array(
              '#type' => 'radios',
              '#title' => t($field['widget']['label']),
              '#default_value' => $node_field['default key'],
              '#options' => $options,
              '#required' => $field['required'],
              '#description' => $field['widget']['description'],
            );
          }
          break;
      }

      return $form;

    case 'process form values':
      $options = _optionwidgets_options($field);

      if ($field['multiple']) {
        $keys = $node_field['keys'];
      }
      else {
        $keys = array($node_field['key']);
      }

      $values = array();
      foreach ($keys as $key) {
        if (isset($options[$key])) {
          $values[] = $key;
        }
      }

      $node_field = content_transpose_array_rows_cols(array('value' => $values));

      // Remove the widget's data representation so it isn't saved.
      unset($node_field['keys']);
      unset($node_field['key']);
      break;
  }
}

function _optionwidgets_options($field) {

  $types = _content_field_types();
  $field_allowed_values = $types[$field['type']]['module'] .'_allowed_values';
  if (function_exists($field_allowed_values)) {
    return $field_allowed_values($field);
  }
  else {
    return array();
  }

}

/**
 *  Theme the label for the empty value for options that are not required.
 *  The default theme will display N/A for a radio list and blank for a select.
 */
function theme_optionwidgets_none($widget_type, $field_name, $node_type) {
  switch ($widget_type) {
  case 'options_buttons':
    return t('N/A');
  default :
    return '';
  }
}