<?php
// $Id: themekey_ui.module,v 1.5.2.1 2009-12-17 18:54:06 mkalkbrenner Exp $

/**
 * Implementation of hook_themekey_properties()
 *
 * Provides additional properties for module ThemeKey:
 *   taxonomy:theme_by_vocabulary
 *   taxonomy:theme_by_term
 *
 * @return
 *   array of themekey properties
 */
function themekey_ui_themekey_properties() {

  // Attributes for properties
  $attributes = array();

  $attributes['themekey_ui:node_triggers_theme'] = array(
    'description' => t("Property themekey_ui:node_triggers_theme could not be selected from the property drop down. You get this static property by activating !link. Afterwards you can move the property to any position in the rule chain. When done it triggers the switch to the theme assigned to the current node using ThemeKey UI.",
                       array('!link' => l(t('Show theme option in create/edit node forms'), 'admin/settings/themekey/settings/ui'))),
    'static' => true,
  );


  // Mapping functions
  $maps = array();

  $maps[] = array('src'       => 'node:nid',
                  'dst'       => 'themekey_ui:node_triggers_theme',
                  'callback'  => 'themekey_ui_nid2theme');

  return array('attributes' => $attributes, 'maps' => $maps);
}


function themekey_ui_nid2theme($nid) {
  global $custom_theme;

  if ($node = node_load($nid)) {
    if (!empty($node->theme) && _themekey_check_theme_enabled($node->theme)) {
      $custom_theme = $node->theme;
      return 'static';
    }
  }

  return NULL;
}


/**
 * Implementation of hook_theme()
 */
function themekey_ui_theme() {
  return array(
    'themekey_ui_table' => array(
      'arguments' => array('form' => NULL),
    )
  );
}

/**
 * Implementation of hook_perm().
 */
function themekey_ui_perm() {
  return array('assign node themes');
}

/**
 * Implementation of hook_menu().
 */
function themekey_ui_menu() {
  $items = array();
  $items['admin/settings/themekey/settings/ui'] = array(
    'title' => 'User Interface',
    'access callback' => 'user_access',
    'access arguments' => array('administer themekey settings'),
    'file' => 'themekey_ui_admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('_themekey_ui_settings_form'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 1
  );

  return $items;
}

/**
 * Implementation of hook_form_alter().
 */
function themekey_ui_form_alter(&$form, $form_state, $form_id) {
  // Node form
  if (variable_get('themekey_ui_nodeform', 0) && user_access('assign node themes')) {
    $type = isset($form['type']['#value']) ? $form['type']['#value'] : FALSE;
    if ($form_id == $type .'_node_form' && variable_get('themekey_ui_nodeform|'. $type, 1)) {
      require_once(drupal_get_path('module', 'themekey_ui') .'/themekey_ui_admin.inc');
      _themekey_ui_nodeform($form, $form_state);
    }
  }
  // Path aliases
  if ($form_id == 'path_admin_form' && variable_get('themekey_ui_pathalias', 0)) {
    require_once(drupal_get_path('module', 'themekey_ui') .'/themekey_ui_admin.inc');
    _themekey_ui_pathalias($form, $form_state);
  }
// REVIEW seems to be dead code
//  // Views
//  if ($form_id == 'views_ui_edit_display_form' && $form_state['#section'] == 'page-path'
//    && variable_get('themekey_ui_views', 0) && user_access('administer views')) {
//    require_once(drupal_get_path('module', 'themekey_ui') .'/themekey_ui_admin.inc');
//    _themekey_ui_views($form, $form_state);
//  }
}

/**
 * Implementation of hook_nodeapi().
 */
function themekey_ui_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
  switch ($op) {
    case 'load':
      if (variable_get('themekey_ui_nodeform', 0) && variable_get('themekey_ui_nodeform|'. $node->type, 1)) {
        if (!empty($node->vid)) {
          $theme = db_result(db_query('SELECT theme FROM {themekey_ui_node_theme} WHERE nid = %d AND vid = %d', $node->nid, $node->vid));
          if ($theme) {
            $node->theme = $theme;
          }
          else {
            $node->theme = 'default';
          }
        }
      }
      break;

    case 'insert':
      if (!empty($node->theme)) {
        $item = array('nid' => $node->nid, 'vid' => $node->vid, 'theme' => $node->theme);
        if (drupal_write_record('themekey_ui_node_theme', $item)) {
          $themes[$node->vid] = $node->theme;
        }
      }
      break;

    case 'update':
      if (!empty($node->theme)) {
        $item = array('nid' => $node->nid, 'vid' => $node->vid, 'theme' => $node->theme);
        if (drupal_write_record('themekey_ui_node_theme', $item, array('nid', 'vid'))) {
          $themes[$node->vid] = $node->theme;
        }
      }
      break;

    case 'delete':
      db_query('DELETE FROM {themekey_ui_node_theme} WHERE nid = %d', $node->nid);
      break;
  }
}

/**
 * Function themekey_ui_form_submit().
 */
function themekey_ui_form_submit($form, &$form_state) {
  if (isset($form_state['values']['themekey_ui_submit'])) {
    require_once(drupal_get_path('module', 'themekey_ui') .'/themekey_ui_admin.inc');
    $handler = $form_state['values']['themekey_ui_submit'];
    if (function_exists($handler)) {
      $handler($form, $form_state);
    }
  }
}