<?php
// $Id: cck_fieldgroup_tabs.module,v 1.1.2.4 2008-04-30 23:12:58 nedjo Exp $

/**
 * @file
 * Add tabs display option for CCK fieldgroups.
 */

/**
 * Implementation of hook_menu().
 */
function cck_fieldgroup_tabs_menu($may_cache) {
  $items = array();
  if ($may_cache) {
    $items[] = array(
      'path' => 'admin/settings/cck-fieldgroup-tabs',
      'title' => t('CCK Fieldgroup Tabs'),
      'description' => t('Configuration for CCK fieldgroup tabs'),
      'callback' => 'drupal_get_form',
      'callback arguments' => array('cck_fieldgroup_tabs_admin_settings')
    );
  }
  return $items;
}

/**
 * Admin settings.
 */
function cck_fieldgroup_tabs_admin_settings() {
  $form = array();
  $form['cck_fieldset_tabs_residual'] = array(
    '#type' => 'radios',
    '#title' => t('Basics tab'),
    '#description' => t('Enable this option to give nodes with tabs a new tab containing all fields (e.g., node title and body) not already on a tab.'),
    '#options' => array(t('Disabled'), t('Enabled')),
    '#default_value' => variable_get('cck_fieldset_tabs_residual', 0),
  );
  $form['cck_fieldset_tabs_residual_title'] = array(
    '#type' => 'textfield',
    '#title' => t('Tab title'),
    '#description' => t('Enter a title for the "Basics" tab.'),
    '#default_value' => variable_get('cck_fieldset_tabs_residual_title', t('Basics')),
  );
  $form = system_settings_form($form);
  return $form;
}

/*
 * Implementation of hook_form_alter()
 */
function cck_fieldgroup_tabs_form_alter($form_id, &$form) {
  if (isset($form['type']) && $form['type']['#value'] .'_node_form' == $form_id) {
    // Content module loads a dummy node form. If we alter that form, content_admin_field_overview_form breaks.
    // The cck_dummy_node_form attribute has not yet made it into the stable release of CCK.
    // if (isset($form['#node']) && isset($form['#node']->cck_dummy_node_form) && $form['#node']->cck_dummy_node_form) {
    // For now, test arg.
    if (arg(0) == 'admin') {
      return;
    }
    foreach (fieldgroup_groups($form['type']['#value']) as $group_name => $group) {
      if (isset($form[$group_name]) && $group['settings']['form']['style'] == 'tabs') {
        // Add a tabset if not already added.
        if (!isset($form['fieldgroup_tabs'])) {
          $form['fieldgroup_tabs'] = array(
            '#type' => 'tabset',
            '#weight' => $group['weight'],
          );
        }
        // Otherwise, reset the weight if lower than what's already set.
        // This ensures the tabset has the weight of the lowest fieldgroup
        // it includes.
        else if ($group['weight'] < $form['fieldgroup_tabs']['#weight']) {
          $form['fieldgroup_tabs']['#weight'] = $group['weight'];
        }
        $element = $form[$group_name];
        $element['#type'] = 'tabpage';
        unset($element['#collapsible'], $element['#collapsed']);
        $form['fieldgroup_tabs'][$group_name] = $element;
        unset($form[$group_name]);
      }
    }
    if (isset($form['fieldgroup_tabs']) && variable_get('cck_fieldset_tabs_residual', FALSE)) {
      // Add residual content to a tab if desired.
      $title = t(variable_get('cck_fieldset_tabs_residual_title', t('Basics')));
      $residual = array(
        '#type' => 'tabpage',
        // Pass the value through t() if needed.
        '#title' =>  t($title != t('Basics') ? $title : 'Basics'),
        '#weight' => -20,
      );
      foreach (element_children($form) as $key) {
        if ($key != 'fieldgroup_tabs' && (!isset($form[$key]['#type']) || !in_array($form[$key]['#type'], array('button', 'submit', 'value', 'hidden')))) {
          $residual[$key] = $form[$key];
          unset($form[$key]);
        }
      }
      $form['fieldgroup_tabs']['fieldgroup_tabs_basic'] = $residual;
    }
  }
  else if ($form_id == 'content_admin_display_overview_form') {
    $groups = fieldgroup_groups($form['type_name']['#value']);
    foreach ($groups as $group_name => $group) {
      foreach (_content_admin_display_contexts() as $key => $title) {
        $form['groups'][$group_name][$key]['#options']['tabs'] = t('tabs');
      }
    }
  }
  else if ($form_id == 'fieldgroup_edit_group_form') {
    $form['settings']['form']['style']['#options']['tabs'] = t('tabs');
  }
}

function cck_fieldgroup_tabs_nodeapi(&$node, $op, $teaser, $page) {
  switch ($op) {
    case 'view':
      $context = $teaser ? 'teaser' : 'full';
      foreach (fieldgroup_groups($node->type) as $group_name => $group) {
        // $node->content[$group_name] will be set only if there was visible content.
        if (isset($node->content[$group_name]) && $group['settings']['display'][$context] == 'tabs') {
          // Add a tabset if not already added.
          if (!isset($node->content['fieldgroup_tabs'])) {
            $node->content['fieldgroup_tabs'] = array(
              '#type' => 'tabset',
              '#weight' => $group['weight'],
            );
          }
          // Otherwise, reset the weight if lower than what's already set.
          // This ensures the tabset has the weight of the lowest fieldgroup
          // it includes.
          else if ($group['weight'] < $node->content['fieldgroup_tabs']['#weight']) {
            $node->content['fieldgroup_tabs']['#weight'] = $group['weight'];
          }
          $element = $node->content[$group_name];
          $element['#type'] = 'tabpage';
          $element['#weight'] = $group['weight'];
          // Title is required for tabs.
          $element['#title'] = t(check_plain($group['label']));
          $node->content['fieldgroup_tabs'][$group_name] = $element;
          unset($node->content[$group_name]);
        }
      }
      if (isset($node->content['fieldgroup_tabs'])) {
        // Add residual content to a tab if desired.
        if (variable_get('cck_fieldset_tabs_residual', FALSE)) {
          $title = t(variable_get('cck_fieldset_tabs_residual_title', t('Basics')));
          $residual = array(
            '#type' => 'tabpage',
            '#title' =>  t($title != t('Basics') ? $title : 'Basics'),
            '#weight' => -20,
          );
          foreach (element_children($node->content) as $key) {
            if ($key != 'fieldgroup_tabs') {
              $residual[$key] = $node->content[$key];
              unset($node->content[$key]);
            }
          }
          $node->content['fieldgroup_tabs']['fieldgroup_tabs_basic'] = $residual;
        }
        // Explicitly build, as drupal_render won't invoke form element #process callbacks.
        $node->content['fieldgroup_tabs'] = form_builder('tabset', $node->content['fieldgroup_tabs']);
      }
      break;
  }
}