Drupal PHP Cross Reference Content Management Systems

Source: /modules/system/system.admin.inc - 3207 lines - 115055 bytes - Summary - Text - Print

   1  <?php
   2  
   3  /**
   4   * @file
   5   * Admin page callbacks for the system module.
   6   */
   7  
   8  /**
   9   * Menu callback; Provide the administration overview page.
  10   */
  11  function system_admin_config_page() {
  12    // Check for status report errors.
  13    if (system_status(TRUE) && user_access('administer site configuration')) {
  14      drupal_set_message(t('One or more problems were detected with your Drupal installation. Check the <a href="@status">status report</a> for more information.', array('@status' => url('admin/reports/status'))), 'error');
  15    }
  16    $blocks = array();
  17    if ($admin = db_query("SELECT menu_name, mlid FROM {menu_links} WHERE link_path = 'admin/config' AND module = 'system'")->fetchAssoc()) {
  18      $result = db_query("
  19        SELECT m.*, ml.*
  20        FROM {menu_links} ml
  21        INNER JOIN {menu_router} m ON ml.router_path = m.path
  22        WHERE ml.link_path <> 'admin/help' AND menu_name = :menu_name AND ml.plid = :mlid AND hidden = 0", $admin, array('fetch' => PDO::FETCH_ASSOC));
  23      foreach ($result as $item) {
  24        _menu_link_translate($item);
  25        if (!$item['access']) {
  26          continue;
  27        }
  28        // The link description, either derived from 'description' in hook_menu()
  29        // or customized via menu module is used as title attribute.
  30        if (!empty($item['localized_options']['attributes']['title'])) {
  31          $item['description'] = $item['localized_options']['attributes']['title'];
  32          unset($item['localized_options']['attributes']['title']);
  33        }
  34        $block = $item;
  35        $block['content'] = '';
  36        $block['content'] .= theme('admin_block_content', array('content' => system_admin_menu_block($item)));
  37        if (!empty($block['content'])) {
  38          $block['show'] = TRUE;
  39        }
  40  
  41        // Prepare for sorting as in function _menu_tree_check_access().
  42        // The weight is offset so it is always positive, with a uniform 5-digits.
  43        $blocks[(50000 + $item['weight']) . ' ' . $item['title'] . ' ' . $item['mlid']] = $block;
  44      }
  45    }
  46    if ($blocks) {
  47      ksort($blocks);
  48      return theme('admin_page', array('blocks' => $blocks));
  49    }
  50    else {
  51      return t('You do not have any administrative items.');
  52    }
  53  }
  54  
  55  /**
  56   * Provide a single block from the administration menu as a page.
  57   *
  58   * This function is often a destination for these blocks.
  59   * For example, 'admin/structure/types' needs to have a destination to be valid
  60   * in the Drupal menu system, but too much information there might be
  61   * hidden, so we supply the contents of the block.
  62   *
  63   * @return
  64   *   The output HTML.
  65   */
  66  function system_admin_menu_block_page() {
  67    $item = menu_get_item();
  68    if ($content = system_admin_menu_block($item)) {
  69      $output = theme('admin_block_content', array('content' => $content));
  70    }
  71    else {
  72      $output = t('You do not have any administrative items.');
  73    }
  74    return $output;
  75  }
  76  
  77  /**
  78   * Menu callback; prints a listing of admin tasks, organized by module.
  79   */
  80  function system_admin_index() {
  81    $module_info = system_get_info('module');
  82    foreach ($module_info as $module => $info) {
  83      $module_info[$module] = new stdClass();
  84      $module_info[$module]->info = $info;
  85    }
  86    uasort($module_info, 'system_sort_modules_by_info_name');
  87    $menu_items = array();
  88  
  89    foreach ($module_info as $module => $info) {
  90      // Only display a section if there are any available tasks.
  91      if ($admin_tasks = system_get_module_admin_tasks($module, $info->info)) {
  92        // Sort links by title.
  93        uasort($admin_tasks, 'drupal_sort_title');
  94        // Move 'Configure permissions' links to the bottom of each section.
  95        $permission_key = "admin/people/permissions#module-$module";
  96        if (isset($admin_tasks[$permission_key])) {
  97          $permission_task = $admin_tasks[$permission_key];
  98          unset($admin_tasks[$permission_key]);
  99          $admin_tasks[$permission_key] = $permission_task;
 100        }
 101  
 102        $menu_items[$info->info['name']] = array($info->info['description'], $admin_tasks);
 103      }
 104    }
 105    return theme('system_admin_index', array('menu_items' => $menu_items));
 106  }
 107  
 108  /**
 109   * Displays the configuration overview page.
 110   *
 111   * This menu callback implementation is a legacy function that used to display
 112   * the configuration overview page at admin/config. It is currently unused and
 113   * will be removed in Drupal 8. The page at admin/config is now generated by
 114   * system_admin_config_page().
 115   *
 116   * @deprecated
 117   * @see system_admin_config_page()
 118   */
 119  function system_settings_overview() {
 120    // Check database setup if necessary
 121    if (function_exists('db_check_setup') && empty($_POST)) {
 122      db_check_setup();
 123    }
 124  
 125    $item = menu_get_item('admin/config');
 126    $content = system_admin_menu_block($item);
 127  
 128    $output = theme('admin_block_content', array('content' => $content));
 129  
 130    return $output;
 131  }
 132  
 133  /**
 134   * Menu callback; displays a listing of all themes.
 135   */
 136  function system_themes_page() {
 137    // Get current list of themes.
 138    $themes = system_rebuild_theme_data();
 139    uasort($themes, 'system_sort_modules_by_info_name');
 140  
 141    $theme_default = variable_get('theme_default', 'bartik');
 142    $theme_groups  = array();
 143  
 144    foreach ($themes as &$theme) {
 145      if (!empty($theme->info['hidden'])) {
 146        continue;
 147      }
 148      $admin_theme_options[$theme->name] = $theme->info['name'];
 149      $theme->is_default = ($theme->name == $theme_default);
 150  
 151      // Identify theme screenshot.
 152      $theme->screenshot = NULL;
 153      // Create a list which includes the current theme and all its base themes.
 154      if (isset($themes[$theme->name]->base_themes)) {
 155        $theme_keys = array_keys($themes[$theme->name]->base_themes);
 156        $theme_keys[] = $theme->name;
 157      }
 158      else {
 159        $theme_keys = array($theme->name);
 160      }
 161      // Look for a screenshot in the current theme or in its closest ancestor.
 162      foreach (array_reverse($theme_keys) as $theme_key) {
 163        if (isset($themes[$theme_key]) && file_exists($themes[$theme_key]->info['screenshot'])) {
 164          $theme->screenshot = array(
 165            'path' => $themes[$theme_key]->info['screenshot'],
 166            'alt' => t('Screenshot for !theme theme', array('!theme' => $theme->info['name'])),
 167            'title' => t('Screenshot for !theme theme', array('!theme' => $theme->info['name'])),
 168            'attributes' => array('class' => array('screenshot')),
 169          );
 170          break;
 171        }
 172      }
 173  
 174      if (empty($theme->status)) {
 175       // Ensure this theme is compatible with this version of core.
 176       // Require the 'content' region to make sure the main page
 177       // content has a common place in all themes.
 178        $theme->incompatible_core = !isset($theme->info['core']) || ($theme->info['core'] != DRUPAL_CORE_COMPATIBILITY) || (!isset($theme->info['regions']['content']));
 179        $theme->incompatible_php = version_compare(phpversion(), $theme->info['php']) < 0;
 180      }
 181      $query['token'] = drupal_get_token('system-theme-operation-link');
 182      $theme->operations = array();
 183      if (!empty($theme->status) || !$theme->incompatible_core && !$theme->incompatible_php) {
 184        // Create the operations links.
 185        $query['theme'] = $theme->name;
 186        if (drupal_theme_access($theme)) {
 187          $theme->operations[] = array(
 188            'title' => t('Settings'),
 189            'href' => 'admin/appearance/settings/' . $theme->name,
 190            'attributes' => array('title' => t('Settings for !theme theme', array('!theme' => $theme->info['name']))),
 191          );
 192        }
 193        if (!empty($theme->status)) {
 194          if (!$theme->is_default) {
 195            $theme->operations[] = array(
 196              'title' => t('Disable'),
 197              'href' => 'admin/appearance/disable',
 198              'query' => $query,
 199              'attributes' => array('title' => t('Disable !theme theme', array('!theme' => $theme->info['name']))),
 200            );
 201            $theme->operations[] = array(
 202              'title' => t('Set default'),
 203              'href' => 'admin/appearance/default',
 204              'query' => $query,
 205              'attributes' => array('title' => t('Set !theme as default theme', array('!theme' => $theme->info['name']))),
 206            );
 207          }
 208        }
 209        else {
 210          $theme->operations[] = array(
 211            'title' => t('Enable'),
 212            'href' => 'admin/appearance/enable',
 213            'query' => $query,
 214            'attributes' => array('title' => t('Enable !theme theme', array('!theme' => $theme->info['name']))),
 215          );
 216          $theme->operations[] = array(
 217            'title' => t('Enable and set default'),
 218            'href' => 'admin/appearance/default',
 219            'query' => $query,
 220            'attributes' => array('title' => t('Enable !theme as default theme', array('!theme' => $theme->info['name']))),
 221          );
 222        }
 223      }
 224  
 225      // Add notes to default and administration theme.
 226      $theme->notes = array();
 227      $theme->classes = array();
 228      if ($theme->is_default) {
 229        $theme->classes[] = 'theme-default';
 230        $theme->notes[] = t('default theme');
 231      }
 232  
 233      // Sort enabled and disabled themes into their own groups.
 234      $theme_groups[$theme->status ? 'enabled' : 'disabled'][] = $theme;
 235    }
 236  
 237    // There are two possible theme groups.
 238    $theme_group_titles = array(
 239      'enabled' => format_plural(count($theme_groups['enabled']), 'Enabled theme', 'Enabled themes'),
 240    );
 241    if (!empty($theme_groups['disabled'])) {
 242      $theme_group_titles['disabled'] = format_plural(count($theme_groups['disabled']), 'Disabled theme', 'Disabled themes');
 243    }
 244  
 245    uasort($theme_groups['enabled'], 'system_sort_themes');
 246    drupal_alter('system_themes_page', $theme_groups);
 247  
 248    $admin_form = drupal_get_form('system_themes_admin_form', $admin_theme_options);
 249    return theme('system_themes_page', array('theme_groups' => $theme_groups, 'theme_group_titles' => $theme_group_titles)) . drupal_render($admin_form);
 250  }
 251  
 252  /**
 253   * Form to select the administration theme.
 254   *
 255   * @ingroup forms
 256   * @see system_themes_admin_form_submit()
 257   */
 258  function system_themes_admin_form($form, &$form_state, $theme_options) {
 259    // Administration theme settings.
 260    $form['admin_theme'] = array(
 261      '#type' => 'fieldset',
 262      '#title' => t('Administration theme'),
 263    );
 264    $form['admin_theme']['admin_theme'] = array(
 265      '#type' => 'select',
 266      '#options' => array(0 => t('Default theme')) + $theme_options,
 267      '#title' => t('Administration theme'),
 268      '#description' => t('Choose "Default theme" to always use the same theme as the rest of the site.'),
 269      '#default_value' => variable_get('admin_theme', 0),
 270    );
 271    $form['admin_theme']['node_admin_theme'] = array(
 272      '#type' => 'checkbox',
 273      '#title' => t('Use the administration theme when editing or creating content'),
 274      '#default_value' => variable_get('node_admin_theme', '0'),
 275    );
 276    $form['admin_theme']['actions'] = array('#type' => 'actions');
 277    $form['admin_theme']['actions']['submit'] = array(
 278      '#type' => 'submit',
 279      '#value' => t('Save configuration'),
 280    );
 281    return $form;
 282  }
 283  
 284  /**
 285   * Process system_themes_admin_form form submissions.
 286   */
 287  function system_themes_admin_form_submit($form, &$form_state) {
 288    drupal_set_message(t('The configuration options have been saved.'));
 289    variable_set('admin_theme', $form_state['values']['admin_theme']);
 290    variable_set('node_admin_theme', $form_state['values']['node_admin_theme']);
 291  }
 292  
 293  /**
 294   * Menu callback; Enables a theme.
 295   */
 296  function system_theme_enable() {
 297    if (isset($_REQUEST['theme']) && isset($_REQUEST['token']) && drupal_valid_token($_REQUEST['token'], 'system-theme-operation-link')) {
 298      $theme = $_REQUEST['theme'];
 299      // Get current list of themes.
 300      $themes = list_themes();
 301  
 302      // Check if the specified theme is one recognized by the system.
 303      if (!empty($themes[$theme])) {
 304        theme_enable(array($theme));
 305        drupal_set_message(t('The %theme theme has been enabled.', array('%theme' => $themes[$theme]->info['name'])));
 306      }
 307      else {
 308        drupal_set_message(t('The %theme theme was not found.', array('%theme' => $theme)), 'error');
 309      }
 310      drupal_goto('admin/appearance');
 311    }
 312    return drupal_access_denied();
 313  }
 314  
 315  /**
 316   * Menu callback; Disables a theme.
 317   */
 318  function system_theme_disable() {
 319    if (isset($_REQUEST['theme']) && isset($_REQUEST['token']) && drupal_valid_token($_REQUEST['token'], 'system-theme-operation-link')) {
 320      $theme = $_REQUEST['theme'];
 321      // Get current list of themes.
 322      $themes = list_themes();
 323  
 324      // Check if the specified theme is one recognized by the system.
 325      if (!empty($themes[$theme])) {
 326        if ($theme == variable_get('theme_default', 'bartik')) {
 327          // Don't disable the default theme.
 328          drupal_set_message(t('%theme is the default theme and cannot be disabled.', array('%theme' => $themes[$theme]->info['name'])), 'error');
 329        }
 330        else {
 331          theme_disable(array($theme));
 332          drupal_set_message(t('The %theme theme has been disabled.', array('%theme' => $themes[$theme]->info['name'])));
 333        }
 334      }
 335      else {
 336        drupal_set_message(t('The %theme theme was not found.', array('%theme' => $theme)), 'error');
 337      }
 338      drupal_goto('admin/appearance');
 339    }
 340    return drupal_access_denied();
 341  }
 342  
 343  /**
 344   * Menu callback; Set the default theme.
 345   */
 346  function system_theme_default() {
 347    if (isset($_REQUEST['theme']) && isset($_REQUEST['token']) && drupal_valid_token($_REQUEST['token'], 'system-theme-operation-link')) {
 348      $theme = $_REQUEST['theme'];
 349      // Get current list of themes.
 350      $themes = list_themes();
 351  
 352      // Check if the specified theme is one recognized by the system.
 353      if (!empty($themes[$theme])) {
 354        // Enable the theme if it is currently disabled.
 355        if (empty($themes[$theme]->status)) {
 356         theme_enable(array($theme));
 357        }
 358        // Set the default theme.
 359        variable_set('theme_default', $theme);
 360  
 361        // Rebuild the menu. This duplicates the menu_rebuild() in theme_enable().
 362        // However, modules must know the current default theme in order to use
 363        // this information in hook_menu() or hook_menu_alter() implementations,
 364        // and doing the variable_set() before the theme_enable() could result
 365        // in a race condition where the theme is default but not enabled.
 366        menu_rebuild();
 367  
 368        // The status message depends on whether an admin theme is currently in use:
 369        // a value of 0 means the admin theme is set to be the default theme.
 370        $admin_theme = variable_get('admin_theme', 0);
 371        if ($admin_theme != 0 && $admin_theme != $theme) {
 372          drupal_set_message(t('Please note that the administration theme is still set to the %admin_theme theme; consequently, the theme on this page remains unchanged. All non-administrative sections of the site, however, will show the selected %selected_theme theme by default.', array(
 373            '%admin_theme' => $themes[$admin_theme]->info['name'],
 374            '%selected_theme' => $themes[$theme]->info['name'],
 375          )));
 376        }
 377        else {
 378          drupal_set_message(t('%theme is now the default theme.', array('%theme' => $themes[$theme]->info['name'])));
 379        }
 380      }
 381      else {
 382        drupal_set_message(t('The %theme theme was not found.', array('%theme' => $theme)), 'error');
 383      }
 384      drupal_goto('admin/appearance');
 385    }
 386    return drupal_access_denied();
 387  }
 388  
 389  /**
 390   * Form builder; display theme configuration for entire site and individual themes.
 391   *
 392   * @param $key
 393   *   A theme name.
 394   * @return
 395   *   The form structure.
 396   * @ingroup forms
 397   * @see system_theme_settings_submit()
 398   */
 399  function system_theme_settings($form, &$form_state, $key = '') {
 400    // Default settings are defined in theme_get_setting() in includes/theme.inc
 401    if ($key) {
 402      $var = 'theme_' . $key . '_settings';
 403      $themes = list_themes();
 404      $features = $themes[$key]->info['features'];
 405    }
 406    else {
 407      $var = 'theme_settings';
 408    }
 409  
 410    $form['var'] = array('#type' => 'hidden', '#value' => $var);
 411  
 412    // Toggle settings
 413    $toggles = array(
 414      'logo'                      => t('Logo'),
 415      'name'                      => t('Site name'),
 416      'slogan'                    => t('Site slogan'),
 417      'node_user_picture'         => t('User pictures in posts'),
 418      'comment_user_picture'      => t('User pictures in comments'),
 419      'comment_user_verification' => t('User verification status in comments'),
 420      'favicon'                   => t('Shortcut icon'),
 421      'main_menu'                 => t('Main menu'),
 422      'secondary_menu'            => t('Secondary menu'),
 423    );
 424  
 425    // Some features are not always available
 426    $disabled = array();
 427    if (!variable_get('user_pictures', 0)) {
 428      $disabled['toggle_node_user_picture'] = TRUE;
 429      $disabled['toggle_comment_user_picture'] = TRUE;
 430    }
 431    if (!module_exists('comment')) {
 432      $disabled['toggle_comment_user_picture'] = TRUE;
 433      $disabled['toggle_comment_user_verification'] = TRUE;
 434    }
 435  
 436    $form['theme_settings'] = array(
 437      '#type' => 'fieldset',
 438      '#title' => t('Toggle display'),
 439      '#description' => t('Enable or disable the display of certain page elements.'),
 440    );
 441    foreach ($toggles as $name => $title) {
 442      if ((!$key) || in_array($name, $features)) {
 443        $form['theme_settings']['toggle_' . $name] = array('#type' => 'checkbox', '#title' => $title, '#default_value' => theme_get_setting('toggle_' . $name, $key));
 444        // Disable checkboxes for features not supported in the current configuration.
 445        if (isset($disabled['toggle_' . $name])) {
 446          $form['theme_settings']['toggle_' . $name]['#disabled'] = TRUE;
 447        }
 448      }
 449    }
 450  
 451    if (!element_children($form['theme_settings'])) {
 452      // If there is no element in the theme settings fieldset then do not show
 453      // it -- but keep it in the form if another module wants to alter.
 454      $form['theme_settings']['#access'] = FALSE;
 455    }
 456  
 457    // Logo settings
 458    if ((!$key) || in_array('logo', $features)) {
 459      $form['logo'] = array(
 460        '#type' => 'fieldset',
 461        '#title' => t('Logo image settings'),
 462        '#description' => t('If toggled on, the following logo will be displayed.'),
 463        '#attributes' => array('class' => array('theme-settings-bottom')),
 464      );
 465      $form['logo']['default_logo'] = array(
 466        '#type' => 'checkbox',
 467        '#title' => t('Use the default logo'),
 468        '#default_value' => theme_get_setting('default_logo', $key),
 469        '#tree' => FALSE,
 470        '#description' => t('Check here if you want the theme to use the logo supplied with it.')
 471      );
 472      $form['logo']['settings'] = array(
 473        '#type' => 'container',
 474        '#states' => array(
 475          // Hide the logo settings when using the default logo.
 476          'invisible' => array(
 477            'input[name="default_logo"]' => array('checked' => TRUE),
 478          ),
 479        ),
 480      );
 481      $form['logo']['settings']['logo_path'] = array(
 482        '#type' => 'textfield',
 483        '#title' => t('Path to custom logo'),
 484        '#description' => t('The path to the file you would like to use as your logo file instead of the default logo.'),
 485        '#default_value' => theme_get_setting('logo_path', $key),
 486      );
 487      $form['logo']['settings']['logo_upload'] = array(
 488        '#type' => 'file',
 489        '#title' => t('Upload logo image'),
 490        '#maxlength' => 40,
 491        '#description' => t("If you don't have direct file access to the server, use this field to upload your logo.")
 492      );
 493    }
 494  
 495    if ((!$key) || in_array('favicon', $features)) {
 496      $form['favicon'] = array(
 497        '#type' => 'fieldset',
 498        '#title' => t('Shortcut icon settings'),
 499        '#description' => t("Your shortcut icon, or 'favicon', is displayed in the address bar and bookmarks of most browsers."),
 500      );
 501      $form['favicon']['default_favicon'] = array(
 502        '#type' => 'checkbox',
 503        '#title' => t('Use the default shortcut icon.'),
 504        '#default_value' => theme_get_setting('default_favicon', $key),
 505        '#description' => t('Check here if you want the theme to use the default shortcut icon.')
 506      );
 507      $form['favicon']['settings'] = array(
 508        '#type' => 'container',
 509        '#states' => array(
 510          // Hide the favicon settings when using the default favicon.
 511          'invisible' => array(
 512            'input[name="default_favicon"]' => array('checked' => TRUE),
 513          ),
 514        ),
 515      );
 516      $form['favicon']['settings']['favicon_path'] = array(
 517        '#type' => 'textfield',
 518        '#title' => t('Path to custom icon'),
 519        '#description' => t('The path to the image file you would like to use as your custom shortcut icon.'),
 520        '#default_value' => theme_get_setting('favicon_path', $key),
 521      );
 522      $form['favicon']['settings']['favicon_upload'] = array(
 523        '#type' => 'file',
 524        '#title' => t('Upload icon image'),
 525        '#description' => t("If you don't have direct file access to the server, use this field to upload your shortcut icon.")
 526      );
 527    }
 528  
 529    // Inject human-friendly values for logo and favicon.
 530    foreach (array('logo' => 'logo.png', 'favicon' => 'favicon.ico') as $type => $default) {
 531      if (isset($form[$type]['settings'][$type . '_path'])) {
 532        $element = &$form[$type]['settings'][$type . '_path'];
 533  
 534        // If path is a public:// URI, display the path relative to the files
 535        // directory; stream wrappers are not end-user friendly.
 536        $original_path = $element['#default_value'];
 537        $friendly_path = NULL;
 538        if (file_uri_scheme($original_path) == 'public') {
 539          $friendly_path = file_uri_target($original_path);
 540          $element['#default_value'] = $friendly_path;
 541        }
 542      }
 543    }
 544  
 545    if ($key) {
 546      // Call engine-specific settings.
 547      $function = $themes[$key]->prefix . '_engine_settings';
 548      if (function_exists($function)) {
 549        $form['engine_specific'] = array(
 550          '#type' => 'fieldset',
 551          '#title' => t('Theme-engine-specific settings'),
 552          '#description' => t('These settings only exist for the themes based on the %engine theme engine.', array('%engine' => $themes[$key]->prefix)),
 553        );
 554        $function($form, $form_state);
 555      }
 556  
 557      // Create a list which includes the current theme and all its base themes.
 558      if (isset($themes[$key]->base_themes)) {
 559        $theme_keys = array_keys($themes[$key]->base_themes);
 560        $theme_keys[] = $key;
 561      }
 562      else {
 563        $theme_keys = array($key);
 564      }
 565  
 566      // Save the name of the current theme (if any), so that we can temporarily
 567      // override the current theme and allow theme_get_setting() to work
 568      // without having to pass the theme name to it.
 569      $default_theme = !empty($GLOBALS['theme_key']) ? $GLOBALS['theme_key'] : NULL;
 570      $GLOBALS['theme_key'] = $key;
 571  
 572      // Process the theme and all its base themes.
 573      foreach ($theme_keys as $theme) {
 574        // Include the theme-settings.php file.
 575        $filename = DRUPAL_ROOT . '/' . str_replace("/$theme.info", '', $themes[$theme]->filename) . '/theme-settings.php';
 576        if (file_exists($filename)) {
 577          require_once $filename;
 578        }
 579  
 580        // Call theme-specific settings.
 581        $function = $theme . '_form_system_theme_settings_alter';
 582        if (function_exists($function)) {
 583          $function($form, $form_state);
 584        }
 585      }
 586  
 587      // Restore the original current theme.
 588      if (isset($default_theme)) {
 589        $GLOBALS['theme_key'] = $default_theme;
 590      }
 591      else {
 592        unset($GLOBALS['theme_key']);
 593      }
 594    }
 595  
 596    $form = system_settings_form($form);
 597    // We don't want to call system_settings_form_submit(), so change #submit.
 598    array_pop($form['#submit']);
 599    $form['#submit'][] = 'system_theme_settings_submit';
 600    $form['#validate'][] = 'system_theme_settings_validate';
 601    return $form;
 602  }
 603  
 604  /**
 605   * Validator for the system_theme_settings() form.
 606   */
 607  function system_theme_settings_validate($form, &$form_state) {
 608    // Handle file uploads.
 609    $validators = array('file_validate_is_image' => array());
 610  
 611    // Check for a new uploaded logo.
 612    $file = file_save_upload('logo_upload', $validators);
 613    if (isset($file)) {
 614      // File upload was attempted.
 615      if ($file) {
 616        // Put the temporary file in form_values so we can save it on submit.
 617        $form_state['values']['logo_upload'] = $file;
 618      }
 619      else {
 620        // File upload failed.
 621        form_set_error('logo_upload', t('The logo could not be uploaded.'));
 622      }
 623    }
 624  
 625    $validators = array('file_validate_extensions' => array('ico png gif jpg jpeg apng svg'));
 626  
 627    // Check for a new uploaded favicon.
 628    $file = file_save_upload('favicon_upload', $validators);
 629    if (isset($file)) {
 630      // File upload was attempted.
 631      if ($file) {
 632        // Put the temporary file in form_values so we can save it on submit.
 633        $form_state['values']['favicon_upload'] = $file;
 634      }
 635      else {
 636        // File upload failed.
 637        form_set_error('favicon_upload', t('The favicon could not be uploaded.'));
 638      }
 639    }
 640  
 641    // If the user provided a path for a logo or favicon file, make sure a file
 642    // exists at that path.
 643    if ($form_state['values']['logo_path']) {
 644      $path = _system_theme_settings_validate_path($form_state['values']['logo_path']);
 645      if (!$path) {
 646        form_set_error('logo_path', t('The custom logo path is invalid.'));
 647      }
 648    }
 649    if ($form_state['values']['favicon_path']) {
 650      $path = _system_theme_settings_validate_path($form_state['values']['favicon_path']);
 651      if (!$path) {
 652        form_set_error('favicon_path', t('The custom favicon path is invalid.'));
 653      }
 654    }
 655  }
 656  
 657  /**
 658   * Helper function for the system_theme_settings form.
 659   *
 660   * Attempts to validate normal system paths, paths relative to the public files
 661   * directory, or stream wrapper URIs. If the given path is any of the above,
 662   * returns a valid path or URI that the theme system can display.
 663   *
 664   * @param $path
 665   *   A path relative to the Drupal root or to the public files directory, or
 666   *   a stream wrapper URI.
 667   * @return mixed
 668   *   A valid path that can be displayed through the theme system, or FALSE if
 669   *   the path could not be validated.
 670   */
 671  function _system_theme_settings_validate_path($path) {
 672    // Absolute local file paths are invalid.
 673    if (drupal_realpath($path) == $path) {
 674      return FALSE;
 675    }
 676    // A path relative to the Drupal root or a fully qualified URI is valid.
 677    if (is_file($path)) {
 678      return $path;
 679    }
 680    // Prepend 'public://' for relative file paths within public filesystem.
 681    if (file_uri_scheme($path) === FALSE) {
 682      $path = 'public://' . $path;
 683    }
 684    if (is_file($path)) {
 685      return $path;
 686    }
 687    return FALSE;
 688  }
 689  
 690  /**
 691   * Process system_theme_settings form submissions.
 692   */
 693  function system_theme_settings_submit($form, &$form_state) {
 694    // Exclude unnecessary elements before saving.
 695    form_state_values_clean($form_state);
 696  
 697    $values = $form_state['values'];
 698  
 699    // Extract the name of the theme from the submitted form values, then remove
 700    // it from the array so that it is not saved as part of the variable.
 701    $key = $values['var'];
 702    unset($values['var']);
 703  
 704    // If the user uploaded a new logo or favicon, save it to a permanent location
 705    // and use it in place of the default theme-provided file.
 706    if ($file = $values['logo_upload']) {
 707      unset($values['logo_upload']);
 708      $filename = file_unmanaged_copy($file->uri);
 709      $values['default_logo'] = 0;
 710      $values['logo_path'] = $filename;
 711      $values['toggle_logo'] = 1;
 712    }
 713    if ($file = $values['favicon_upload']) {
 714      unset($values['favicon_upload']);
 715      $filename = file_unmanaged_copy($file->uri);
 716      $values['default_favicon'] = 0;
 717      $values['favicon_path'] = $filename;
 718      $values['toggle_favicon'] = 1;
 719    }
 720  
 721    // If the user entered a path relative to the system files directory for
 722    // a logo or favicon, store a public:// URI so the theme system can handle it.
 723    if (!empty($values['logo_path'])) {
 724      $values['logo_path'] = _system_theme_settings_validate_path($values['logo_path']);
 725    }
 726    if (!empty($values['favicon_path'])) {
 727      $values['favicon_path'] = _system_theme_settings_validate_path($values['favicon_path']);
 728    }
 729  
 730    if (empty($values['default_favicon']) && !empty($values['favicon_path'])) {
 731      $values['favicon_mimetype'] = file_get_mimetype($values['favicon_path']);
 732    }
 733  
 734    variable_set($key, $values);
 735    drupal_set_message(t('The configuration options have been saved.'));
 736  
 737    cache_clear_all();
 738  }
 739  
 740  /**
 741   * Recursively check compatibility.
 742   *
 743   * @param $incompatible
 744   *   An associative array which at the end of the check contains all
 745   *   incompatible files as the keys, their values being TRUE.
 746   * @param $files
 747   *   The set of files that will be tested.
 748   * @param $file
 749   *   The file at which the check starts.
 750   * @return
 751   *   Returns TRUE if an incompatible file is found, NULL (no return value)
 752   *   otherwise.
 753   */
 754  function _system_is_incompatible(&$incompatible, $files, $file) {
 755    if (isset($incompatible[$file->name])) {
 756      return TRUE;
 757    }
 758    // Recursively traverse required modules, looking for incompatible modules.
 759    foreach ($file->requires as $requires) {
 760      if (isset($files[$requires]) && _system_is_incompatible($incompatible, $files, $files[$requires])) {
 761        $incompatible[$file->name] = TRUE;
 762        return TRUE;
 763      }
 764    }
 765  }
 766  
 767  /**
 768   * Menu callback; provides module enable/disable interface.
 769   *
 770   * The list of modules gets populated by module.info files, which contain each
 771   * module's name, description, and information about which modules it requires.
 772   * See drupal_parse_info_file() for information on module.info descriptors.
 773   *
 774   * Dependency checking is performed to ensure that a module:
 775   * - can not be enabled if there are disabled modules it requires.
 776   * - can not be disabled if there are enabled modules which depend on it.
 777   *
 778   * @param $form_state
 779   *   An associative array containing the current state of the form.
 780   *
 781   * @return
 782   *   The form array.
 783   *
 784   * @ingroup forms
 785   * @see theme_system_modules()
 786   * @see system_modules_submit()
 787   */
 788  function system_modules($form, $form_state = array()) {
 789    // Get current list of modules.
 790    $files = system_rebuild_module_data();
 791  
 792    // Remove hidden modules from display list.
 793    $visible_files = $files;
 794    foreach ($visible_files as $filename => $file) {
 795      if (!empty($file->info['hidden'])) {
 796        unset($visible_files[$filename]);
 797      }
 798    }
 799  
 800    uasort($visible_files, 'system_sort_modules_by_info_name');
 801  
 802    // If the modules form was submitted, then system_modules_submit() runs first
 803    // and if there are unfilled required modules, then $form_state['storage'] is
 804    // filled, triggering a rebuild. In this case we need to display a
 805    // confirmation form.
 806    if (!empty($form_state['storage'])) {
 807      return system_modules_confirm_form($visible_files, $form_state['storage']);
 808    }
 809  
 810    $modules = array();
 811    $form['modules'] = array('#tree' => TRUE);
 812  
 813    // Used when checking if module implements a help page.
 814    $help_arg = module_exists('help') ? drupal_help_arg() : FALSE;
 815  
 816    // Used when displaying modules that are required by the installation profile.
 817    require_once  DRUPAL_ROOT . '/includes/install.inc';
 818    $distribution_name = check_plain(drupal_install_profile_distribution_name());
 819  
 820    // Iterate through each of the modules.
 821    foreach ($visible_files as $filename => $module) {
 822      $extra = array();
 823      $extra['enabled'] = (bool) $module->status;
 824      if (!empty($module->info['required'] )) {
 825        $extra['disabled'] = TRUE;
 826        $extra['required_by'][] = $distribution_name . (!empty($module->info['explanation']) ? ' ('. $module->info['explanation'] .')' : '');
 827      }
 828  
 829      // If this module requires other modules, add them to the array.
 830      foreach ($module->requires as $requires => $v) {
 831        if (!isset($files[$requires])) {
 832          $extra['requires'][$requires] = t('@module (<span class="admin-missing">missing</span>)', array('@module' => drupal_ucfirst($requires)));
 833          $extra['disabled'] = TRUE;
 834        }
 835        // Only display visible modules.
 836        elseif (isset($visible_files[$requires])) {
 837          $requires_name = $files[$requires]->info['name'];
 838          // Disable this module if it is incompatible with the dependency's version.
 839          if ($incompatible_version = drupal_check_incompatibility($v, str_replace(DRUPAL_CORE_COMPATIBILITY . '-', '', $files[$requires]->info['version']))) {
 840            $extra['requires'][$requires] = t('@module (<span class="admin-missing">incompatible with</span> version @version)', array(
 841              '@module' => $requires_name . $incompatible_version,
 842              '@version' => $files[$requires]->info['version'],
 843            ));
 844            $extra['disabled'] = TRUE;
 845          }
 846          // Disable this module if the dependency is incompatible with this
 847          // version of Drupal core.
 848          elseif ($files[$requires]->info['core'] != DRUPAL_CORE_COMPATIBILITY) {
 849            $extra['requires'][$requires] = t('@module (<span class="admin-missing">incompatible with</span> this version of Drupal core)', array(
 850              '@module' => $requires_name,
 851            ));
 852            $extra['disabled'] = TRUE;
 853          }
 854          elseif ($files[$requires]->status) {
 855            $extra['requires'][$requires] = t('@module (<span class="admin-enabled">enabled</span>)', array('@module' => $requires_name));
 856          }
 857          else {
 858            $extra['requires'][$requires] = t('@module (<span class="admin-disabled">disabled</span>)', array('@module' => $requires_name));
 859          }
 860        }
 861      }
 862      // Generate link for module's help page, if there is one.
 863      if ($help_arg && $module->status && in_array($filename, module_implements('help'))) {
 864        if (module_invoke($filename, 'help', "admin/help#$filename", $help_arg)) {
 865          $extra['links']['help'] = array(
 866            '#type' => 'link',
 867            '#title' => t('Help'),
 868            '#href' => "admin/help/$filename",
 869            '#options' => array('attributes' => array('class' =>  array('module-link', 'module-link-help'), 'title' => t('Help'))),
 870          );
 871        }
 872      }
 873      // Generate link for module's permission, if the user has access to it.
 874      if ($module->status && user_access('administer permissions') && in_array($filename, module_implements('permission'))) {
 875        $extra['links']['permissions'] = array(
 876          '#type' => 'link',
 877          '#title' => t('Permissions'),
 878          '#href' => 'admin/people/permissions',
 879          '#options' => array('fragment' => 'module-' . $filename, 'attributes' => array('class' => array('module-link', 'module-link-permissions'), 'title' => t('Configure permissions'))),
 880        );
 881      }
 882      // Generate link for module's configuration page, if the module provides
 883      // one.
 884      if ($module->status && isset($module->info['configure'])) {
 885        $configure_link = menu_get_item($module->info['configure']);
 886        if ($configure_link['access']) {
 887          $extra['links']['configure'] = array(
 888            '#type' => 'link',
 889            '#title' => t('Configure'),
 890            '#href' => $configure_link['href'],
 891            '#options' => array('attributes' => array('class' => array('module-link', 'module-link-configure'), 'title' => $configure_link['description'])),
 892          );
 893        }
 894      }
 895  
 896      // If this module is required by other modules, list those, and then make it
 897      // impossible to disable this one.
 898      foreach ($module->required_by as $required_by => $v) {
 899        // Hidden modules are unset already.
 900        if (isset($visible_files[$required_by])) {
 901          if ($files[$required_by]->status == 1 && $module->status == 1) {
 902            $extra['required_by'][] = t('@module (<span class="admin-enabled">enabled</span>)', array('@module' => $files[$required_by]->info['name']));
 903            $extra['disabled'] = TRUE;
 904          }
 905          else {
 906            $extra['required_by'][] = t('@module (<span class="admin-disabled">disabled</span>)', array('@module' => $files[$required_by]->info['name']));
 907          }
 908        }
 909      }
 910      $form['modules'][$module->info['package']][$filename] = _system_modules_build_row($module->info, $extra);
 911    }
 912  
 913    // Add basic information to the fieldsets.
 914    foreach (element_children($form['modules']) as $package) {
 915      $form['modules'][$package] += array(
 916        '#type' => 'fieldset',
 917        '#title' => t($package),
 918        '#collapsible' => TRUE,
 919        '#theme' => 'system_modules_fieldset',
 920        '#header' => array(
 921          array('data' => t('Enabled'), 'class' => array('checkbox')),
 922          t('Name'),
 923          t('Version'),
 924          t('Description'),
 925          array('data' => t('Operations'), 'colspan' => 3),
 926        ),
 927        // Ensure that the "Core" package fieldset comes first.
 928        '#weight' => $package == 'Core' ? -10 : NULL,
 929      );
 930    }
 931  
 932    // Lastly, sort all fieldsets by title.
 933    uasort($form['modules'], 'element_sort_by_title');
 934  
 935    $form['actions'] = array('#type' => 'actions');
 936    $form['actions']['submit'] = array(
 937      '#type' => 'submit',
 938      '#value' => t('Save configuration'),
 939    );
 940    $form['#action'] = url('admin/modules/list/confirm');
 941  
 942    return $form;
 943  }
 944  
 945  /**
 946   * Array sorting callback; sorts modules or themes by their name.
 947   */
 948  function system_sort_modules_by_info_name($a, $b) {
 949    return strcasecmp($a->info['name'], $b->info['name']);
 950  }
 951  
 952  /**
 953   * Array sorting callback; sorts modules or themes by their name.
 954   */
 955  function system_sort_themes($a, $b) {
 956    if ($a->is_default) {
 957      return -1;
 958    }
 959    if ($b->is_default) {
 960      return 1;
 961    }
 962    return strcasecmp($a->info['name'], $b->info['name']);
 963  }
 964  
 965  /**
 966   * Build a table row for the system modules page.
 967   */
 968  function _system_modules_build_row($info, $extra) {
 969    // Add in the defaults.
 970    $extra += array(
 971      'requires' => array(),
 972      'required_by' => array(),
 973      'disabled' => FALSE,
 974      'enabled' => FALSE,
 975      'links' => array(),
 976    );
 977    $form = array(
 978      '#tree' => TRUE,
 979    );
 980    // Set the basic properties.
 981    $form['name'] = array(
 982      '#markup' => $info['name'],
 983    );
 984    $form['description'] = array(
 985      '#markup' => t($info['description']),
 986    );
 987    $form['version'] = array(
 988      '#markup' => $info['version'],
 989    );
 990    $form['#requires'] = $extra['requires'];
 991    $form['#required_by'] = $extra['required_by'];
 992  
 993    // Check the compatibilities.
 994    $compatible = TRUE;
 995    $status_short = '';
 996    $status_long = '';
 997  
 998    // Check the core compatibility.
 999    if (!isset($info['core']) || $info['core'] != DRUPAL_CORE_COMPATIBILITY) {
1000      $compatible = FALSE;
1001      $status_short .= t('Incompatible with this version of Drupal core.');
1002      $status_long .= t('This version is not compatible with Drupal !core_version and should be replaced.', array('!core_version' => DRUPAL_CORE_COMPATIBILITY));
1003    }
1004  
1005    // Ensure this module is compatible with the currently installed version of PHP.
1006    if (version_compare(phpversion(), $info['php']) < 0) {
1007      $compatible = FALSE;
1008      $status_short .= t('Incompatible with this version of PHP');
1009      $php_required = $info['php'];
1010      if (substr_count($info['php'], '.') < 2) {
1011        $php_required .= '.*';
1012      }
1013      $status_long .= t('This module requires PHP version @php_required and is incompatible with PHP version !php_version.', array('@php_required' => $php_required, '!php_version' => phpversion()));
1014    }
1015  
1016    // If this module is compatible, present a checkbox indicating
1017    // this module may be installed. Otherwise, show a big red X.
1018    if ($compatible) {
1019      $form['enable'] = array(
1020        '#type' => 'checkbox',
1021        '#title' => t('Enable'),
1022        '#default_value' => $extra['enabled'],
1023      );
1024      if ($extra['disabled']) {
1025        $form['enable']['#disabled'] = TRUE;
1026      }
1027    }
1028    else {
1029      $form['enable'] = array(
1030        '#markup' =>  theme('image', array('path' => 'misc/watchdog-error.png', 'alt' => $status_short, 'title' => $status_short)),
1031      );
1032      $form['description']['#markup'] .= theme('system_modules_incompatible', array('message' => $status_long));
1033    }
1034  
1035    // Build operation links.
1036    foreach (array('help', 'permissions', 'configure') as $key) {
1037      $form['links'][$key] = (isset($extra['links'][$key]) ? $extra['links'][$key] : array());
1038    }
1039  
1040    return $form;
1041  }
1042  
1043  /**
1044   * Display confirmation form for required modules.
1045   *
1046   * @param $modules
1047   *   Array of module file objects as returned from system_rebuild_module_data().
1048   * @param $storage
1049   *   The contents of $form_state['storage']; an array with two
1050   *   elements: the list of required modules and the list of status
1051   *   form field values from the previous screen.
1052   * @ingroup forms
1053   */
1054  function system_modules_confirm_form($modules, $storage) {
1055    $items = array();
1056  
1057    $form['validation_modules'] = array('#type' => 'value', '#value' => $modules);
1058    $form['status']['#tree'] = TRUE;
1059  
1060    foreach ($storage['more_required'] as $info) {
1061      $t_argument = array(
1062        '@module' => $info['name'],
1063        '@required' => implode(', ', $info['requires']),
1064      );
1065      $items[] = format_plural(count($info['requires']), 'You must enable the @required module to install @module.', 'You must enable the @required modules to install @module.', $t_argument);
1066    }
1067  
1068    foreach ($storage['missing_modules'] as $name => $info) {
1069      $t_argument = array(
1070        '@module' => $name,
1071        '@depends' => implode(', ', $info['depends']),
1072      );
1073      $items[] = format_plural(count($info['depends']), 'The @module module is missing, so the following module will be disabled: @depends.', 'The @module module is missing, so the following modules will be disabled: @depends.', $t_argument);
1074    }
1075  
1076    $form['text'] = array('#markup' => theme('item_list', array('items' => $items)));
1077  
1078    if ($form) {
1079      // Set some default form values
1080      $form = confirm_form(
1081        $form,
1082        t('Some required modules must be enabled'),
1083        'admin/modules',
1084        t('Would you like to continue with the above?'),
1085        t('Continue'),
1086        t('Cancel'));
1087      return $form;
1088    }
1089  }
1090  
1091  /**
1092   * Submit callback; handles modules form submission.
1093   */
1094  function system_modules_submit($form, &$form_state) {
1095    include_once  DRUPAL_ROOT . '/includes/install.inc';
1096  
1097    // Builds list of modules.
1098    $modules = array();
1099    // If we're not coming from the confirmation form, build the list of modules.
1100    if (empty($form_state['storage'])) {
1101      // If we're not coming from the confirmation form, build the module list.
1102      foreach ($form_state['values']['modules'] as $group_name => $group) {
1103        foreach ($group as $module => $enabled) {
1104          $modules[$module] = array('group' => $group_name, 'enabled' => $enabled['enable']);
1105        }
1106      }
1107    }
1108    else {
1109      // If we are coming from the confirmation form, fetch
1110      // the modules out of $form_state.
1111      $modules = $form_state['storage']['modules'];
1112    }
1113  
1114    // Collect data for all modules to be able to determine dependencies.
1115    $files = system_rebuild_module_data();
1116  
1117    // Sorts modules by weight.
1118    $sort = array();
1119    foreach (array_keys($modules) as $module) {
1120      $sort[$module] = $files[$module]->sort;
1121    }
1122    array_multisort($sort, $modules);
1123  
1124    // Makes sure all required modules are set to be enabled.
1125    $more_required = array();
1126    $missing_modules = array();
1127    foreach ($modules as $name => $module) {
1128      if ($module['enabled']) {
1129        // Checks that all dependencies are set to be enabled.  Stores the ones
1130        // that are not in $dependencies variable so that the user can be alerted
1131        // in the confirmation form that more modules need to be enabled.
1132        $dependencies = array();
1133        foreach (array_keys($files[$name]->requires) as $required) {
1134          if (empty($modules[$required]['enabled'])) {
1135            if (isset($files[$required])) {
1136              $dependencies[] = $files[$required]->info['name'];
1137              $modules[$required]['enabled'] = TRUE;
1138            }
1139            else {
1140              $missing_modules[$required]['depends'][] = $name;
1141              $modules[$name]['enabled'] = FALSE;
1142            }
1143          }
1144        }
1145  
1146        // Stores additional modules that need to be enabled in $more_required.
1147        if (!empty($dependencies)) {
1148          $more_required[$name] = array(
1149            'name' => $files[$name]->info['name'],
1150            'requires' => $dependencies,
1151          );
1152        }
1153      }
1154    }
1155  
1156    // Redirects to confirmation form if more modules need to be enabled.
1157    if ((!empty($more_required) || !empty($missing_modules)) && !isset($form_state['values']['confirm'])) {
1158      $form_state['storage'] = array(
1159        'more_required' => $more_required,
1160        'modules' => $modules,
1161        'missing_modules' => $missing_modules,
1162      );
1163      $form_state['rebuild'] = TRUE;
1164      return;
1165    }
1166  
1167    // Invokes hook_requirements('install').  If failures are detected, makes sure
1168    // the dependent modules aren't installed either.
1169    foreach ($modules as $name => $module) {
1170      // Only invoke hook_requirements() on modules that are going to be installed.
1171      if ($module['enabled'] && drupal_get_installed_schema_version($name) == SCHEMA_UNINSTALLED) {
1172        if (!drupal_check_module($name)) {
1173          $modules[$name]['enabled'] = FALSE;
1174          foreach (array_keys($files[$name]->required_by) as $required_by) {
1175            $modules[$required_by]['enabled'] = FALSE;
1176          }
1177        }
1178      }
1179    }
1180  
1181    // Initializes array of actions.
1182    $actions = array(
1183      'enable' => array(),
1184      'disable' => array(),
1185      'install' => array(),
1186    );
1187  
1188    // Builds arrays of modules that need to be enabled, disabled, and installed.
1189    foreach ($modules as $name => $module) {
1190      if ($module['enabled']) {
1191        if (drupal_get_installed_schema_version($name) == SCHEMA_UNINSTALLED) {
1192          $actions['install'][] = $name;
1193          $actions['enable'][] = $name;
1194        }
1195        elseif (!module_exists($name)) {
1196          $actions['enable'][] = $name;
1197        }
1198      }
1199      elseif (module_exists($name)) {
1200        $actions['disable'][] = $name;
1201      }
1202    }
1203  
1204    // Gets list of modules prior to install process, unsets $form_state['storage']
1205    // so we don't get redirected back to the confirmation form.
1206    $pre_install_list = module_list();
1207    unset($form_state['storage']);
1208  
1209    // Reverse the 'enable' list, to order dependencies before dependents.
1210    krsort($actions['enable']);
1211  
1212    // Installs, enables, and disables modules.
1213    module_enable($actions['enable'], FALSE);
1214    module_disable($actions['disable'], FALSE);
1215  
1216    // Gets module list after install process, flushes caches and displays a
1217    // message if there are changes.
1218    $post_install_list = module_list(TRUE);
1219    if ($pre_install_list != $post_install_list) {
1220      drupal_flush_all_caches();
1221      drupal_set_message(t('The configuration options have been saved.'));
1222    }
1223  
1224    $form_state['redirect'] = 'admin/modules';
1225  }
1226  
1227  /**
1228   * Uninstall functions
1229   */
1230  
1231  /**
1232   * Builds a form of currently disabled modules.
1233   *
1234   * @ingroup forms
1235   * @see system_modules_uninstall_validate()
1236   * @see system_modules_uninstall_submit()
1237   * @param $form_state['values']
1238   *   Submitted form values.
1239   * @return
1240   *   A form array representing the currently disabled modules.
1241   */
1242  function system_modules_uninstall($form, $form_state = NULL) {
1243    // Make sure the install API is available.
1244    include_once  DRUPAL_ROOT . '/includes/install.inc';
1245  
1246    // Display the confirm form if any modules have been submitted.
1247    if (!empty($form_state['storage']) && $confirm_form = system_modules_uninstall_confirm_form($form_state['storage'])) {
1248      return $confirm_form;
1249    }
1250  
1251    // Get a list of disabled, installed modules.
1252    $all_modules = system_rebuild_module_data();
1253    $disabled_modules = array();
1254    foreach ($all_modules as $name => $module) {
1255      if (empty($module->status) && $module->schema_version > SCHEMA_UNINSTALLED) {
1256        $disabled_modules[$name] = $module;
1257      }
1258    }
1259  
1260    // Only build the rest of the form if there are any modules available to
1261    // uninstall.
1262    if (!empty($disabled_modules)) {
1263      $profile = drupal_get_profile();
1264      uasort($disabled_modules, 'system_sort_modules_by_info_name');
1265      $form['uninstall'] = array('#tree' => TRUE);
1266      foreach ($disabled_modules as $module) {
1267        $module_name = $module->info['name'] ? $module->info['name'] : $module->name;
1268        $form['modules'][$module->name]['#module_name'] = $module_name;
1269        $form['modules'][$module->name]['name']['#markup'] = $module_name;
1270        $form['modules'][$module->name]['description']['#markup'] = t($module->info['description']);
1271        $form['uninstall'][$module->name] = array(
1272          '#type' => 'checkbox',
1273          '#title' => t('Uninstall @module module', array('@module' => $module_name)),
1274          '#title_display' => 'invisible',
1275        );
1276        // All modules which depend on this one must be uninstalled first, before
1277        // we can allow this module to be uninstalled. (The installation profile
1278        // is excluded from this list.)
1279        foreach (array_keys($module->required_by) as $dependent) {
1280          if ($dependent != $profile && drupal_get_installed_schema_version($dependent) != SCHEMA_UNINSTALLED) {
1281            $dependent_name = isset($all_modules[$dependent]->info['name']) ? $all_modules[$dependent]->info['name'] : $dependent;
1282            $form['modules'][$module->name]['#required_by'][] = $dependent_name;
1283            $form['uninstall'][$module->name]['#disabled'] = TRUE;
1284          }
1285        }
1286      }
1287      $form['actions'] = array('#type' => 'actions');
1288      $form['actions']['submit'] = array(
1289        '#type' => 'submit',
1290        '#value' => t('Uninstall'),
1291      );
1292      $form['#action'] = url('admin/modules/uninstall/confirm');
1293    }
1294    else {
1295      $form['modules'] = array();
1296    }
1297  
1298    return $form;
1299  }
1300  
1301  /**
1302   * Confirm uninstall of selected modules.
1303   *
1304   * @ingroup forms
1305   * @param $storage
1306   *   An associative array of modules selected to be uninstalled.
1307   * @return
1308   *   A form array representing modules to confirm.
1309   */
1310  function system_modules_uninstall_confirm_form($storage) {
1311    // Nothing to build.
1312    if (empty($storage)) {
1313      return;
1314    }
1315  
1316    // Construct the hidden form elements and list items.
1317    foreach (array_filter($storage['uninstall']) as $module => $value) {
1318      $info = drupal_parse_info_file(drupal_get_path('module', $module) . '/' . $module . '.info');
1319      $uninstall[] = $info['name'];
1320      $form['uninstall'][$module] = array('#type' => 'hidden',
1321        '#value' => 1,
1322      );
1323    }
1324  
1325    // Display a confirm form if modules have been selected.
1326    if (isset($uninstall)) {
1327      $form['#confirmed'] = TRUE;
1328      $form['uninstall']['#tree'] = TRUE;
1329      $form['modules'] = array('#markup' => '<p>' . t('The following modules will be completely uninstalled from your site, and <em>all data from these modules will be lost</em>!') . '</p>' . theme('item_list', array('items' => $uninstall)));
1330      $form = confirm_form(
1331        $form,
1332        t('Confirm uninstall'),
1333        'admin/modules/uninstall',
1334        t('Would you like to continue with uninstalling the above?'),
1335        t('Uninstall'),
1336        t('Cancel'));
1337      return $form;
1338    }
1339  }
1340  
1341  /**
1342   * Validates the submitted uninstall form.
1343   */
1344  function system_modules_uninstall_validate($form, &$form_state) {
1345    // Form submitted, but no modules selected.
1346    if (!count(array_filter($form_state['values']['uninstall']))) {
1347      drupal_set_message(t('No modules selected.'), 'error');
1348      drupal_goto('admin/modules/uninstall');
1349    }
1350  }
1351  
1352  /**
1353   * Processes the submitted uninstall form.
1354   */
1355  function system_modules_uninstall_submit($form, &$form_state) {
1356    // Make sure the install API is available.
1357    include_once  DRUPAL_ROOT . '/includes/install.inc';
1358  
1359    if (!empty($form['#confirmed'])) {
1360      // Call the uninstall routine for each selected module.
1361      $modules = array_keys($form_state['values']['uninstall']);
1362      drupal_uninstall_modules($modules);
1363      drupal_set_message(t('The selected modules have been uninstalled.'));
1364  
1365      $form_state['redirect'] = 'admin/modules/uninstall';
1366    }
1367    else {
1368      $form_state['storage'] = $form_state['values'];
1369      $form_state['rebuild'] = TRUE;
1370    }
1371  }
1372  
1373  /**
1374   * Menu callback. Display blocked IP addresses.
1375   *
1376   * @param $default_ip
1377   *   Optional IP address to be passed on to drupal_get_form() for
1378   *   use as the default value of the IP address form field.
1379   */
1380  function system_ip_blocking($default_ip = '') {
1381    $rows = array();
1382    $header = array(t('Blocked IP addresses'), t('Operations'));
1383    $result = db_query('SELECT * FROM {blocked_ips}');
1384    foreach ($result as $ip) {
1385      $rows[] = array(
1386        $ip->ip,
1387        l(t('delete'), "admin/config/people/ip-blocking/delete/$ip->iid"),
1388      );
1389    }
1390  
1391    $build['system_ip_blocking_form'] = drupal_get_form('system_ip_blocking_form', $default_ip);
1392  
1393    $build['system_ip_blocking_table'] = array(
1394      '#theme' => 'table',
1395      '#header' => $header,
1396      '#rows' => $rows,
1397      '#empty' => t('No blocked IP addresses available.'),
1398    );
1399  
1400    return $build;
1401  }
1402  
1403  /**
1404   * Define the form for blocking IP addresses.
1405   *
1406   * @ingroup forms
1407   * @see system_ip_blocking_form_validate()
1408   * @see system_ip_blocking_form_submit()
1409   */
1410  function system_ip_blocking_form($form, $form_state, $default_ip) {
1411    $form['ip'] = array(
1412      '#title' => t('IP address'),
1413      '#type' => 'textfield',
1414      '#size' => 48,
1415      '#maxlength' => 40,
1416      '#default_value' => $default_ip,
1417      '#description' => t('Enter a valid IP address.'),
1418    );
1419    $form['actions'] = array('#type' => 'actions');
1420    $form['actions']['submit'] = array(
1421      '#type' => 'submit',
1422      '#value' => t('Add'),
1423    );
1424    $form['#submit'][] = 'system_ip_blocking_form_submit';
1425    $form['#validate'][] = 'system_ip_blocking_form_validate';
1426    return $form;
1427  }
1428  
1429  function system_ip_blocking_form_validate($form, &$form_state) {
1430    $ip = trim($form_state['values']['ip']);
1431    if (db_query("SELECT * FROM {blocked_ips} WHERE ip = :ip", array(':ip' => $ip))->fetchField()) {
1432      form_set_error('ip', t('This IP address is already blocked.'));
1433    }
1434    elseif ($ip == ip_address()) {
1435      form_set_error('ip', t('You may not block your own IP address.'));
1436    }
1437    elseif (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_RES_RANGE) == FALSE) {
1438      form_set_error('ip', t('Enter a valid IP address.'));
1439    }
1440  }
1441  
1442  function system_ip_blocking_form_submit($form, &$form_state) {
1443    $ip = trim($form_state['values']['ip']);
1444    db_insert('blocked_ips')
1445      ->fields(array('ip' => $ip))
1446      ->execute();
1447    drupal_set_message(t('The IP address %ip has been blocked.', array('%ip' => $ip)));
1448    $form_state['redirect'] = 'admin/config/people/ip-blocking';
1449    return;
1450  }
1451  
1452  /**
1453   * IP deletion confirm page.
1454   *
1455   * @see system_ip_blocking_delete_submit()
1456   */
1457  function system_ip_blocking_delete($form, &$form_state, $iid) {
1458    $form['blocked_ip'] = array(
1459      '#type' => 'value',
1460      '#value' => $iid,
1461    );
1462    return confirm_form($form, t('Are you sure you want to delete %ip?', array('%ip' => $iid['ip'])), 'admin/config/people/ip-blocking', t('This action cannot be undone.'), t('Delete'), t('Cancel'));
1463  }
1464  
1465  /**
1466   * Process system_ip_blocking_delete form submissions.
1467   */
1468  function system_ip_blocking_delete_submit($form, &$form_state) {
1469    $blocked_ip = $form_state['values']['blocked_ip'];
1470    db_delete('blocked_ips')
1471      ->condition('iid', $blocked_ip['iid'])
1472      ->execute();
1473    watchdog('user', 'Deleted %ip', array('%ip' => $blocked_ip['ip']));
1474    drupal_set_message(t('The IP address %ip was deleted.', array('%ip' => $blocked_ip['ip'])));
1475    $form_state['redirect'] = 'admin/config/people/ip-blocking';
1476  }
1477  
1478  /**
1479   * Form builder; The general site information form.
1480   *
1481   * @ingroup forms
1482   * @see system_settings_form()
1483   */
1484  function system_site_information_settings() {
1485    $form['site_information'] = array(
1486      '#type' => 'fieldset',
1487      '#title' => t('Site details'),
1488    );
1489    $form['site_information']['site_name'] = array(
1490      '#type' => 'textfield',
1491      '#title' => t('Site name'),
1492      '#default_value' => variable_get('site_name', 'Drupal'),
1493      '#required' => TRUE
1494    );
1495    $form['site_information']['site_slogan'] = array(
1496      '#type' => 'textfield',
1497      '#title' => t('Slogan'),
1498      '#default_value' => variable_get('site_slogan', ''),
1499      '#description' => t("How this is used depends on your site's theme."),
1500    );
1501    $form['site_information']['site_mail'] = array(
1502      '#type' => 'textfield',
1503      '#title' => t('E-mail address'),
1504      '#default_value' => variable_get('site_mail', ini_get('sendmail_from')),
1505      '#description' => t("The <em>From</em> address in automated e-mails sent during registration and new password requests, and other notifications. (Use an address ending in your site's domain to help prevent this e-mail being flagged as spam.)"),
1506      '#required' => TRUE,
1507    );
1508    $form['front_page'] = array(
1509      '#type' => 'fieldset',
1510      '#title' => t('Front page'),
1511    );
1512    $form['front_page']['default_nodes_main'] = array(
1513      '#type' => 'select', '#title' => t('Number of posts on front page'),
1514      '#default_value' => variable_get('default_nodes_main', 10),
1515      '#options' => drupal_map_assoc(array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30)),
1516      '#description' => t('The maximum number of posts displayed on overview pages such as the front page.')
1517    );
1518    $form['front_page']['site_frontpage'] = array(
1519      '#type' => 'textfield',
1520      '#title' => t('Default front page'),
1521      '#default_value' => (variable_get('site_frontpage')!='node'?drupal_get_path_alias(variable_get('site_frontpage', 'node')):''),
1522      '#size' => 40,
1523      '#description' => t('Optionally, specify a relative URL to display as the front page.  Leave blank to display the default content feed.'),
1524      '#field_prefix' => url(NULL, array('absolute' => TRUE)) . (variable_get('clean_url', 0) ? '' : '?q='),
1525    );
1526    $form['error_page'] = array(
1527      '#type' => 'fieldset',
1528      '#title' => t('Error pages'),
1529    );
1530    $form['error_page']['site_403'] = array(
1531      '#type' => 'textfield',
1532      '#title' => t('Default 403 (access denied) page'),
1533      '#default_value' => variable_get('site_403', ''),
1534      '#size' => 40,
1535      '#description' => t('This page is displayed when the requested document is denied to the current user. Leave blank to display a generic "access denied" page.'),
1536      '#field_prefix' => url(NULL, array('absolute' => TRUE)) . (variable_get('clean_url', 0) ? '' : '?q=')
1537    );
1538    $form['error_page']['site_404'] = array(
1539      '#type' => 'textfield',
1540      '#title' => t('Default 404 (not found) page'),
1541      '#default_value' => variable_get('site_404', ''),
1542      '#size' => 40,
1543      '#description' => t('This page is displayed when no other content matches the requested document. Leave blank to display a generic "page not found" page.'),
1544      '#field_prefix' => url(NULL, array('absolute' => TRUE)) . (variable_get('clean_url', 0) ? '' : '?q=')
1545    );
1546  
1547    $form['#validate'][] = 'system_site_information_settings_validate';
1548  
1549    return system_settings_form($form);
1550  }
1551  
1552  /**
1553   * Validates the submitted site-information form.
1554   */
1555  function system_site_information_settings_validate($form, &$form_state) {
1556    // Validate the e-mail address.
1557    if ($error = user_validate_mail($form_state['values']['site_mail'])) {
1558      form_set_error('site_mail', $error);
1559    }
1560    // Check for empty front page path.
1561    if (empty($form_state['values']['site_frontpage'])) {
1562      // Set to default "node".
1563      form_set_value($form['front_page']['site_frontpage'], 'node', $form_state);
1564    }
1565    else {
1566      // Get the normal path of the front page.
1567      form_set_value($form['front_page']['site_frontpage'], drupal_get_normal_path($form_state['values']['site_frontpage']), $form_state);
1568    }
1569    // Validate front page path.
1570    if (!drupal_valid_path($form_state['values']['site_frontpage'])) {
1571      form_set_error('site_frontpage', t("The path '%path' is either invalid or you do not have access to it.", array('%path' => $form_state['values']['site_frontpage'])));
1572    }
1573    // Get the normal paths of both error pages.
1574    if (!empty($form_state['values']['site_403'])) {
1575      form_set_value($form['error_page']['site_403'], drupal_get_normal_path($form_state['values']['site_403']), $form_state);
1576    }
1577    if (!empty($form_state['values']['site_404'])) {
1578      form_set_value($form['error_page']['site_404'], drupal_get_normal_path($form_state['values']['site_404']), $form_state);
1579    }
1580    // Validate 403 error path.
1581    if (!empty($form_state['values']['site_403']) && !drupal_valid_path($form_state['values']['site_403'])) {
1582      form_set_error('site_403', t("The path '%path' is either invalid or you do not have access to it.", array('%path' => $form_state['values']['site_403'])));
1583    }
1584    // Validate 404 error path.
1585    if (!empty($form_state['values']['site_404']) && !drupal_valid_path($form_state['values']['site_404'])) {
1586      form_set_error('site_404', t("The path '%path' is either invalid or you do not have access to it.", array('%path' => $form_state['values']['site_404'])));
1587    }
1588  }
1589  
1590  /**
1591   * Form builder; Cron form.
1592   *
1593   * @see system_settings_form()
1594   * @ingroup forms
1595   */
1596  function system_cron_settings() {
1597    $form['description'] = array(
1598      '#markup' => '<p>' . t('Cron takes care of running periodic tasks like checking for updates and indexing content for search.') . '</p>',
1599    );
1600    $form['run'] = array(
1601      '#type' => 'submit',
1602      '#value' => t('Run cron'),
1603      '#submit' => array('system_run_cron_submit'),
1604    );
1605    $status = '<p>' . t('Last run: %cron-last ago.', array('%cron-last' => format_interval(REQUEST_TIME - variable_get('cron_last')),)) . '</p>';
1606    $form['status'] = array(
1607      '#markup' => $status,
1608    );
1609    $form['cron'] = array(
1610      '#type' => 'fieldset',
1611    );
1612    $form['cron']['cron_safe_threshold'] = array(
1613      '#type' => 'select',
1614      '#title' => t('Run cron every'),
1615      '#default_value' => variable_get('cron_safe_threshold', DRUPAL_CRON_DEFAULT_THRESHOLD),
1616      '#options' => array(0 => t('Never')) + drupal_map_assoc(array(3600, 10800, 21600, 43200, 86400, 604800), 'format_interval'),
1617    );
1618  
1619    return system_settings_form($form);
1620  }
1621  
1622  /**
1623   * Submit callback; run cron.
1624   *
1625   * @ingroup forms
1626   */
1627  function system_run_cron_submit($form, &$form_state) {
1628    // Run cron manually from Cron form.
1629    if (drupal_cron_run()) {
1630      drupal_set_message(t('Cron run successfully.'));
1631    }
1632    else {
1633      drupal_set_message(t('Cron run failed.'), 'error');
1634    }
1635  
1636    drupal_goto('admin/config/system/cron');
1637  }
1638  
1639  /**
1640   * Form builder; Configure error reporting settings.
1641   *
1642   * @ingroup forms
1643   * @see system_settings_form()
1644   */
1645  function system_logging_settings() {
1646    $form['error_level'] = array(
1647      '#type' => 'radios',
1648      '#title' => t('Error messages to display'),
1649      '#default_value' => variable_get('error_level', ERROR_REPORTING_DISPLAY_ALL),
1650      '#options' => array(
1651        ERROR_REPORTING_HIDE => t('None'),
1652        ERROR_REPORTING_DISPLAY_SOME => t('Errors and warnings'),
1653        ERROR_REPORTING_DISPLAY_ALL => t('All messages'),
1654      ),
1655      '#description' => t('It is recommended that sites running on production environments do not display any errors.'),
1656    );
1657  
1658    return system_settings_form($form);
1659  }
1660  
1661  /**
1662   * Form builder; Configure site performance settings.
1663   *
1664   * @ingroup forms
1665   * @see system_settings_form()
1666   */
1667  function system_performance_settings() {
1668    drupal_add_js(drupal_get_path('module', 'system') . '/system.js');
1669  
1670    $form['clear_cache'] = array(
1671      '#type' => 'fieldset',
1672      '#title' => t('Clear cache'),
1673    );
1674  
1675    $form['clear_cache']['clear'] = array(
1676      '#type' => 'submit',
1677      '#value' => t('Clear all caches'),
1678      '#submit' => array('system_clear_cache_submit'),
1679    );
1680  
1681    $form['caching'] = array(
1682      '#type' => 'fieldset',
1683      '#title' => t('Caching'),
1684    );
1685  
1686    $cache = variable_get('cache', 0);
1687    $form['caching']['cache'] = array(
1688      '#type' => 'checkbox',
1689      '#title' => t('Cache pages for anonymous users'),
1690      '#default_value' => $cache,
1691      '#weight' => -2,
1692    );
1693    $period = drupal_map_assoc(array(0, 60, 180, 300, 600, 900, 1800, 2700, 3600, 10800, 21600, 32400, 43200, 86400), 'format_interval');
1694    $period[0] = '<' . t('none') . '>';
1695    $form['caching']['cache_lifetime'] = array(
1696      '#type' => 'select',
1697      '#title' => t('Minimum cache lifetime'),
1698      '#default_value' => variable_get('cache_lifetime', 0),
1699      '#options' => $period,
1700      '#description' => t('Cached pages will not be re-created until at least this much time has elapsed.')
1701    );
1702    $form['caching']['page_cache_maximum_age'] = array(
1703      '#type' => 'select',
1704      '#title' => t('Expiration of cached pages'),
1705      '#default_value' => variable_get('page_cache_maximum_age', 0),
1706      '#options' => $period,
1707      '#description' => t('The maximum time an external cache can use an old version of a page.')
1708    );
1709  
1710    $directory = 'public://';
1711    $is_writable = is_dir($directory) && is_writable($directory);
1712    $disabled = !$is_writable;
1713    $disabled_message = '';
1714    if (!$is_writable) {
1715      $disabled_message = ' ' . t('<strong class="error">Set up the <a href="!file-system">public files directory</a> to make these optimizations available.</strong>', array('!file-system' => url('admin/config/media/file-system')));
1716    }
1717  
1718    $form['bandwidth_optimization'] = array(
1719      '#type' => 'fieldset',
1720      '#title' => t('Bandwidth optimization'),
1721      '#description' => t('External resources can be optimized automatically, which can reduce both the size and number of requests made to your website.') . $disabled_message,
1722    );
1723  
1724    $js_hide = $cache ? '' : ' class="js-hide"';
1725    $form['bandwidth_optimization']['page_compression'] = array(
1726      '#type' => 'checkbox',
1727      '#title' => t('Compress cached pages.'),
1728      '#default_value' => variable_get('page_compression', TRUE),
1729      '#prefix' => '<div id="page-compression-wrapper"' . $js_hide . '>',
1730      '#suffix' => '</div>',
1731    );
1732    $form['bandwidth_optimization']['preprocess_css'] = array(
1733      '#type' => 'checkbox',
1734      '#title' => t('Aggregate and compress CSS files.'),
1735      '#default_value' => intval(variable_get('preprocess_css', 0) && $is_writable),
1736      '#disabled' => $disabled,
1737    );
1738    $form['bandwidth_optimization']['preprocess_js'] = array(
1739      '#type' => 'checkbox',
1740      '#title' => t('Aggregate JavaScript files.'),
1741      '#default_value' => intval(variable_get('preprocess_js', 0) && $is_writable),
1742      '#disabled' => $disabled,
1743    );
1744  
1745    $form['#submit'][] = 'drupal_clear_css_cache';
1746    $form['#submit'][] = 'drupal_clear_js_cache';
1747    // This form allows page compression settings to be changed, which can
1748    // invalidate the page cache, so it needs to be cleared on form submit.
1749    $form['#submit'][] = 'system_clear_page_cache_submit';
1750  
1751    return system_settings_form($form);
1752  }
1753  
1754  /**
1755   * Submit callback; clear system caches.
1756   *
1757   * @ingroup forms
1758   */
1759  function system_clear_cache_submit($form, &$form_state) {
1760    drupal_flush_all_caches();
1761    drupal_set_message(t('Caches cleared.'));
1762  }
1763  
1764  /**
1765   * Submit callback; clear the page cache.
1766   *
1767   * @ingroup forms
1768   */
1769  function system_clear_page_cache_submit($form, &$form_state) {
1770    cache_clear_all('*', 'cache_page', TRUE);
1771  }
1772  
1773  /**
1774   * Form builder; Configure the site file handling.
1775   *
1776   * @ingroup forms
1777   * @see system_settings_form()
1778   */
1779  function system_file_system_settings() {
1780    $form['file_public_path'] = array(
1781      '#type' => 'textfield',
1782      '#title' => t('Public file system path'),
1783      '#default_value' => variable_get('file_public_path', conf_path() . '/files'),
1784      '#maxlength' => 255,
1785      '#description' => t('A local file system path where public files will be stored. This directory must exist and be writable by Drupal. This directory must be relative to the Drupal installation directory and be accessible over the web.'),
1786      '#after_build' => array('system_check_directory'),
1787    );
1788  
1789    $form['file_private_path'] = array(
1790      '#type' => 'textfield',
1791      '#title' => t('Private file system path'),
1792      '#default_value' => variable_get('file_private_path', ''),
1793      '#maxlength' => 255,
1794      '#description' => t('An existing local file system path for storing private files. It should be writable by Drupal and not accessible over the web. See the online handbook for <a href="@handbook">more information about securing private files</a>.', array('@handbook' => 'http://drupal.org/documentation/modules/file')),
1795      '#after_build' => array('system_check_directory'),
1796    );
1797  
1798    $form['file_temporary_path'] = array(
1799      '#type' => 'textfield',
1800      '#title' => t('Temporary directory'),
1801      '#default_value' => variable_get('file_temporary_path', file_directory_temp()),
1802      '#maxlength' => 255,
1803      '#description' => t('A local file system path where temporary files will be stored. This directory should not be accessible over the web.'),
1804      '#after_build' => array('system_check_directory'),
1805    );
1806    // Any visible, writeable wrapper can potentially be used for the files
1807    // directory, including a remote file system that integrates with a CDN.
1808    foreach (file_get_stream_wrappers(STREAM_WRAPPERS_WRITE_VISIBLE) as $scheme => $info) {
1809      $options[$scheme] = check_plain($info['description']);
1810    }
1811  
1812    if (!empty($options)) {
1813      $form['file_default_scheme'] = array(
1814        '#type' => 'radios',
1815        '#title' => t('Default download method'),
1816        '#default_value' => variable_get('file_default_scheme', isset($options['public']) ? 'public' : key($options)),
1817        '#options' => $options,
1818        '#description' => t('This setting is used as the preferred download method. The use of public files is more efficient, but does not provide any access control.'),
1819      );
1820    }
1821  
1822    return system_settings_form($form);
1823  }
1824  
1825  /**
1826   * Form builder; Configure site image toolkit usage.
1827   *
1828   * @ingroup forms
1829   * @see system_settings_form()
1830   */
1831  function system_image_toolkit_settings() {
1832    $toolkits_available = image_get_available_toolkits();
1833    $current_toolkit = image_get_toolkit();
1834  
1835    if (count($toolkits_available) == 0) {
1836      variable_del('image_toolkit');
1837      $form['image_toolkit_help'] = array(
1838        '#markup' => t("No image toolkits were detected. Drupal includes support for <a href='!gd-link'>PHP's built-in image processing functions</a> but they were not detected on this system. You should consult your system administrator to have them enabled, or try using a third party toolkit.", array('gd-link' => url('http://php.net/gd'))),
1839      );
1840      return $form;
1841    }
1842  
1843    if (count($toolkits_available) > 1) {
1844      $form['image_toolkit'] = array(
1845        '#type' => 'radios',
1846        '#title' => t('Select an image processing toolkit'),
1847        '#default_value' => variable_get('image_toolkit', $current_toolkit),
1848        '#options' => $toolkits_available
1849      );
1850    }
1851    else {
1852      variable_set('image_toolkit', key($toolkits_available));
1853    }
1854  
1855    // Get the toolkit's settings form.
1856    $function = 'image_' . $current_toolkit . '_settings';
1857    if (function_exists($function)) {
1858      $form['image_toolkit_settings'] = $function();
1859    }
1860  
1861    return system_settings_form($form);
1862  }
1863  
1864  /**
1865   * Form builder; Configure how the site handles RSS feeds.
1866   *
1867   * @ingroup forms
1868   * @see system_settings_form()
1869   */
1870  function system_rss_feeds_settings() {
1871    $form['feed_description'] = array(
1872      '#type' => 'textarea',
1873      '#title' => t('Feed description'),
1874      '#default_value' => variable_get('feed_description', ''),
1875      '#description' => t('Description of your site, included in each feed.')
1876    );
1877    $form['feed_default_items'] = array(
1878      '#type' => 'select',
1879      '#title' => t('Number of items in each feed'),
1880      '#default_value' => variable_get('feed_default_items', 10),
1881      '#options' => drupal_map_assoc(array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30)),
1882      '#description' => t('Default number of items to include in each feed.')
1883    );
1884    $form['feed_item_length'] = array(
1885      '#type' => 'select',
1886      '#title' => t('Feed content'),
1887      '#default_value' => variable_get('feed_item_length', 'fulltext'),
1888      '#options' => array('title' => t('Titles only'), 'teaser' => t('Titles plus teaser'), 'fulltext' => t('Full text')),
1889      '#description' => t('Global setting for the default display of content items in each feed.')
1890    );
1891  
1892    return system_settings_form($form);
1893  }
1894  
1895  /**
1896   * Form builder; Configure the site regional settings.
1897   *
1898   * @ingroup forms
1899   * @see system_settings_form()
1900   * @see system_regional_settings_submit()
1901   */
1902  function system_regional_settings() {
1903    include_once  DRUPAL_ROOT . '/includes/locale.inc';
1904    $countries = country_get_list();
1905  
1906    // Date settings:
1907    $zones = system_time_zones();
1908  
1909    $form['locale'] = array(
1910      '#type' => 'fieldset',
1911      '#title' => t('Locale'),
1912    );
1913  
1914    $form['locale']['site_default_country'] = array(
1915      '#type' => 'select',
1916      '#title' => t('Default country'),
1917      '#empty_value' => '',
1918      '#default_value' => variable_get('site_default_country', ''),
1919      '#options' => $countries,
1920      '#attributes' => array('class' => array('country-detect')),
1921    );
1922  
1923    $form['locale']['date_first_day'] = array(
1924      '#type' => 'select',
1925      '#title' => t('First day of week'),
1926      '#default_value' => variable_get('date_first_day', 0),
1927      '#options' => array(0 => t('Sunday'), 1 => t('Monday'), 2 => t('Tuesday'), 3 => t('Wednesday'), 4 => t('Thursday'), 5 => t('Friday'), 6 => t('Saturday')),
1928    );
1929  
1930    $form['timezone'] = array(
1931      '#type' => 'fieldset',
1932      '#title' => t('Time zones'),
1933    );
1934  
1935    $form['timezone']['date_default_timezone'] = array(
1936      '#type' => 'select',
1937      '#title' => t('Default time zone'),
1938      '#default_value' => variable_get('date_default_timezone', date_default_timezone_get()),
1939      '#options' => $zones,
1940    );
1941  
1942    $configurable_timezones = variable_get('configurable_timezones', 1);
1943    $form['timezone']['configurable_timezones'] = array(
1944      '#type' => 'checkbox',
1945      '#title' => t('Users may set their own time zone.'),
1946      '#default_value' => $configurable_timezones,
1947    );
1948  
1949    $form['timezone']['configurable_timezones_wrapper'] =  array(
1950      '#type' => 'container',
1951      '#states' => array(
1952        // Hide the user configured timezone settings when users are forced to use
1953        // the default setting.
1954        'invisible' => array(
1955          'input[name="configurable_timezones"]' => array('checked' => FALSE),
1956        ),
1957      ),
1958    );
1959    $form['timezone']['configurable_timezones_wrapper']['empty_timezone_message'] = array(
1960      '#type' => 'checkbox',
1961      '#title' => t('Remind users at login if their time zone is not set.'),
1962      '#default_value' => variable_get('empty_timezone_message', 0),
1963      '#description' => t('Only applied if users may set their own time zone.')
1964    );
1965  
1966    $form['timezone']['configurable_timezones_wrapper']['user_default_timezone'] = array(
1967      '#type' => 'radios',
1968      '#title' => t('Time zone for new users'),
1969      '#default_value' => variable_get('user_default_timezone', DRUPAL_USER_TIMEZONE_DEFAULT),
1970      '#options' => array(
1971        DRUPAL_USER_TIMEZONE_DEFAULT => t('Default time zone.'),
1972        DRUPAL_USER_TIMEZONE_EMPTY   => t('Empty time zone.'),
1973        DRUPAL_USER_TIMEZONE_SELECT  => t('Users may set their own time zone at registration.'),
1974      ),
1975      '#description' => t('Only applied if users may set their own time zone.')
1976    );
1977  
1978    return system_settings_form($form);
1979  }
1980  
1981  /**
1982   * Form builder; Configure the site date and time settings.
1983   *
1984   * @ingroup forms
1985   * @see system_settings_form()
1986   */
1987  function system_date_time_settings() {
1988    // Get list of all available date types.
1989    drupal_static_reset('system_get_date_types');
1990    $format_types = system_get_date_types();
1991  
1992    // Get list of all available date formats.
1993    $all_formats = array();
1994    drupal_static_reset('system_get_date_formats');
1995    $date_formats = system_get_date_formats(); // Call this to rebuild the list, and to have default list.
1996    foreach ($date_formats as $type => $format_info) {
1997      $all_formats = array_merge($all_formats, $format_info);
1998    }
1999    $custom_formats = system_get_date_formats('custom');
2000    if (!empty($format_types)) {
2001      foreach ($format_types as $type => $type_info) {
2002        // If a system type, only show the available formats for that type and
2003        // custom ones.
2004        if ($type_info['locked'] == 1) {
2005          $formats = system_get_date_formats($type);
2006          if (empty($formats)) {
2007            $formats = $all_formats;
2008          }
2009          elseif (!empty($custom_formats)) {
2010            $formats = array_merge($formats, $custom_formats);
2011          }
2012        }
2013        // If a user configured type, show all available date formats.
2014        else {
2015          $formats = $all_formats;
2016        }
2017  
2018        $choices = array();
2019        foreach ($formats as $f => $format) {
2020          $choices[$f] = format_date(REQUEST_TIME, 'custom', $f);
2021        }
2022        reset($formats);
2023        $default = variable_get('date_format_' . $type, key($formats));
2024  
2025        // Get date type info for this date type.
2026        $type_info = system_get_date_types($type);
2027        $form['formats']['#theme'] = 'system_date_time_settings';
2028  
2029        // Show date format select list.
2030        $form['formats']['format']['date_format_' . $type] = array(
2031          '#type' => 'select',
2032          '#title' => check_plain($type_info['title']),
2033          '#attributes' => array('class' => array('date-format')),
2034          '#default_value' => (isset($choices[$default]) ? $default : 'custom'),
2035          '#options' => $choices,
2036        );
2037  
2038        // If this isn't a system provided type, allow the user to remove it from
2039        // the system.
2040        if ($type_info['locked'] == 0) {
2041          $form['formats']['delete']['date_format_' . $type . '_delete'] = array(
2042            '#type' => 'link',
2043            '#title' => t('delete'),
2044            '#href' => 'admin/config/regional/date-time/types/' . $type . '/delete',
2045          );
2046        }
2047      }
2048    }
2049  
2050    // Display a message if no date types configured.
2051    $form['#empty_text'] = t('No date types available. <a href="@link">Add date type</a>.', array('@link' => url('admin/config/regional/date-time/types/add')));
2052  
2053    return system_settings_form($form);
2054  }
2055  
2056  /**
2057   * Returns HTML for the date settings form.
2058   *
2059   * @param $variables
2060   *   An associative array containing:
2061   *   - form: A render element representing the form.
2062   *
2063   * @ingroup themeable
2064   */
2065  function theme_system_date_time_settings($variables) {
2066    $form = $variables['form'];
2067    $header = array(
2068      t('Date type'),
2069      t('Format'),
2070      t('Operations'),
2071    );
2072  
2073    foreach (element_children($form['format']) as $key) {
2074      $delete_key = $key . '_delete';
2075      $row = array();
2076      $row[] = $form['format'][$key]['#title'];
2077      $form['format'][$key]['#title_display'] = 'invisible';
2078      $row[] = array('data' => drupal_render($form['format'][$key]));
2079      $row[] = array('data' => drupal_render($form['delete'][$delete_key]));
2080      $rows[] = $row;
2081    }
2082  
2083    $output = theme('table', array('header' => $header, 'rows' => $rows, 'attributes' => array('id' => 'system-date-types')));
2084    $output .= drupal_render_children($form);
2085  
2086    return $output;
2087  }
2088  
2089  
2090  /**
2091   * Add new date type.
2092   *
2093   * @ingroup forms
2094   * @ingroup system_add_date_format_type_form_validate()
2095   * @ingroup system_add_date_format_type_form_submit()
2096   */
2097  function system_add_date_format_type_form($form, &$form_state) {
2098    $form['date_type'] = array(
2099      '#title' => t('Date type'),
2100      '#type' => 'textfield',
2101      '#required' => TRUE,
2102    );
2103    $form['machine_name'] = array(
2104      '#type' => 'machine_name',
2105      '#machine_name' => array(
2106        'exists' => 'system_get_date_types',
2107        'source' => array('date_type'),
2108      ),
2109    );
2110  
2111    // Get list of all available date formats.
2112    $formats = array();
2113    drupal_static_reset('system_get_date_formats');
2114    $date_formats = system_get_date_formats(); // Call this to rebuild the list, and to have default list.
2115    foreach ($date_formats as $type => $format_info) {
2116      $formats = array_merge($formats, $format_info);
2117    }
2118    $custom_formats = system_get_date_formats('custom');
2119    if (!empty($custom_formats)) {
2120      $formats = array_merge($formats, $custom_formats);
2121    }
2122    $choices = array();
2123    foreach ($formats as $f => $format) {
2124      $choices[$f] = format_date(REQUEST_TIME, 'custom', $f);
2125    }
2126    // Show date format select list.
2127    $form['date_format'] = array(
2128      '#type' => 'select',
2129      '#title' => t('Date format'),
2130      '#attributes' => array('class' => array('date-format')),
2131      '#options' => $choices,
2132      '#required' => TRUE,
2133    );
2134  
2135    $form['actions'] = array('#type' => 'actions');
2136    $form['actions']['submit'] = array(
2137      '#type' => 'submit',
2138      '#value' => t('Add date type'),
2139    );
2140  
2141    $form['#validate'][] = 'system_add_date_format_type_form_validate';
2142    $form['#submit'][] = 'system_add_date_format_type_form_submit';
2143  
2144    return $form;
2145  }
2146  
2147  /**
2148   * Validate system_add_date_format_type form submissions.
2149   */
2150  function system_add_date_format_type_form_validate($form, &$form_state) {
2151    if (!empty($form_state['values']['machine_name']) && !empty($form_state['values']['date_type'])) {
2152      if (!preg_match("/^[a-zA-Z0-9_]+$/", trim($form_state['values']['machine_name']))) {
2153        form_set_error('machine_name', t('The date type must contain only alphanumeric characters and underscores.'));
2154      }
2155      $types = system_get_date_types();
2156      if (in_array(trim($form_state['values']['machine_name']), array_keys($types))) {
2157        form_set_error('machine_name', t('This date type already exists. Enter a unique type.'));
2158      }
2159    }
2160  }
2161  
2162  /**
2163   * Process system_add_date_format_type form submissions.
2164   */
2165  function system_add_date_format_type_form_submit($form, &$form_state) {
2166    $machine_name = trim($form_state['values']['machine_name']);
2167  
2168    $format_type = array();
2169    $format_type['title'] = trim($form_state['values']['date_type']);
2170    $format_type['type'] = $machine_name;
2171    $format_type['locked'] = 0;
2172    $format_type['is_new'] = 1;
2173    system_date_format_type_save($format_type);
2174    variable_set('date_format_' . $machine_name, $form_state['values']['date_format']);
2175  
2176    drupal_set_message(t('New date type added successfully.'));
2177    $form_state['redirect'] = 'admin/config/regional/date-time';
2178  }
2179  
2180  /**
2181   * Return the date for a given format string via Ajax.
2182   */
2183  function system_date_time_lookup() {
2184    $result = format_date(REQUEST_TIME, 'custom', $_GET['format']);
2185    drupal_json_output($result);
2186  }
2187  
2188  /**
2189   * Form builder; Configure the site's maintenance status.
2190   *
2191   * @ingroup forms
2192   * @see system_settings_form()
2193   */
2194  function system_site_maintenance_mode() {
2195    $form['maintenance_mode'] = array(
2196      '#type' => 'checkbox',
2197      '#title' => t('Put site into maintenance mode'),
2198      '#default_value' => variable_get('maintenance_mode', 0),
2199      '#description' => t('When enabled, only users with the "Use the site in maintenance mode" <a href="@permissions-url">permission</a> are able to access your site to perform maintenance; all other visitors see the maintenance mode message configured below. Authorized users can log in directly via the <a href="@user-login">user login</a> page.', array('@permissions-url' => url('admin/people/permissions'), '@user-login' => url('user'))),
2200    );
2201    $form['maintenance_mode_message'] = array(
2202      '#type' => 'textarea',
2203      '#title' => t('Maintenance mode message'),
2204      '#default_value' => variable_get('maintenance_mode_message', t('@site is currently under maintenance. We should be back shortly. Thank you for your patience.', array('@site' => variable_get('site_name', 'Drupal')))),
2205      '#description' => t('Message to show visitors when the site is in maintenance mode.')
2206    );
2207  
2208    return system_settings_form($form);
2209  }
2210  
2211  /**
2212   * Form builder; Configure clean URL settings.
2213   *
2214   * @ingroup forms
2215   * @see system_settings_form()
2216   */
2217  function system_clean_url_settings($form, &$form_state) {
2218    $available = FALSE;
2219    $conflict = FALSE;
2220  
2221    // If the request URI is a clean URL, clean URLs must be available.
2222    // Otherwise, run a test.
2223    if (strpos(request_uri(), '?q=') === FALSE && strpos(request_uri(), '&q=') === FALSE) {
2224      $available = TRUE;
2225    }
2226    else {
2227      $request = drupal_http_request($GLOBALS['base_url'] . '/admin/config/search/clean-urls/check');
2228      // If the request returns HTTP 200, clean URLs are available.
2229      if (isset($request->code) && $request->code == 200) {
2230        $available = TRUE;
2231        // If the user started the clean URL test, provide explicit feedback.
2232        if (isset($form_state['input']['clean_url_test_execute'])) {
2233          drupal_set_message(t('The clean URL test passed.'));
2234        }
2235      }
2236      else {
2237        // If the test failed while clean URLs are enabled, make sure clean URLs
2238        // can be disabled.
2239        if (variable_get('clean_url', 0)) {
2240          $conflict = TRUE;
2241          // Warn the user of a conflicting situation, unless after processing
2242          // a submitted form.
2243          if (!isset($form_state['input']['op'])) {
2244            drupal_set_message(t('Clean URLs are enabled, but the clean URL test failed. Uncheck the box below to disable clean URLs.'), 'warning');
2245          }
2246        }
2247        // If the user started the clean URL test, provide explicit feedback.
2248        elseif (isset($form_state['input']['clean_url_test_execute'])) {
2249          drupal_set_message(t('The clean URL test failed.'), 'warning');
2250        }
2251      }
2252    }
2253  
2254    // Show the enable/disable form if clean URLs are available or if the user
2255    // must be able to resolve a conflicting setting.
2256    if ($available || $conflict) {
2257      $form['clean_url'] = array(
2258        '#type' => 'checkbox',
2259        '#title' => t('Enable clean URLs'),
2260        '#default_value' => variable_get('clean_url', 0),
2261        '#description' => t('Use URLs like <code>example.com/user</code> instead of <code>example.com/?q=user</code>.'),
2262      );
2263      $form = system_settings_form($form);
2264      if ($conflict) {
2265        // $form_state['redirect'] needs to be set to the non-clean URL,
2266        // otherwise the setting is not saved.
2267        $form_state['redirect'] = url('', array('query' => array('q' => '/admin/config/search/clean-urls')));
2268      }
2269    }
2270    // Show the clean URLs test form.
2271    else {
2272      drupal_add_js(drupal_get_path('module', 'system') . '/system.js');
2273  
2274      $form_state['redirect'] = url('admin/config/search/clean-urls');
2275      $form['clean_url_description'] = array(
2276        '#type' => 'markup',
2277        '#markup' => '<p>' . t('Use URLs like <code>example.com/user</code> instead of <code>example.com/?q=user</code>.'),
2278      );
2279      // Explain why the user is seeing this page and what to expect after
2280      // clicking the 'Run the clean URL test' button.
2281      $form['clean_url_test_result'] = array(
2282        '#type' => 'markup',
2283        '#markup' => '<p>' . t('Clean URLs cannot be enabled. If you are directed to this page or to a <em>Page not found (404)</em> error after testing for clean URLs, see the <a href="@handbook">online handbook</a>.', array('@handbook' => 'http://drupal.org/node/15365')) . '</p>',
2284      );
2285      $form['actions'] = array(
2286        '#type' => 'actions',
2287        'clean_url_test' => array(
2288          '#type' => 'submit',
2289          '#value' => t('Run the clean URL test'),
2290        ),
2291      );
2292      $form['clean_url_test_execute'] = array(
2293        '#type' => 'hidden',
2294        '#value' => 1,
2295      );
2296    }
2297  
2298    return $form;
2299  }
2300  
2301  /**
2302   * Menu callback: displays the site status report. Can also be used as a pure check.
2303   *
2304   * @param $check
2305   *   If true, only returns a boolean whether there are system status errors.
2306   */
2307  function system_status($check = FALSE) {
2308    // Load .install files
2309    include_once  DRUPAL_ROOT . '/includes/install.inc';
2310    drupal_load_updates();
2311  
2312    // Check run-time requirements and status information.
2313    $requirements = module_invoke_all('requirements', 'runtime');
2314    usort($requirements, '_system_sort_requirements');
2315  
2316    if ($check) {
2317      return drupal_requirements_severity($requirements) == REQUIREMENT_ERROR;
2318    }
2319    // MySQL import might have set the uid of the anonymous user to autoincrement
2320    // value. Let's try fixing it. See http://drupal.org/node/204411
2321    db_update('users')
2322      ->expression('uid', 'uid - uid')
2323      ->condition('name', '')
2324      ->condition('pass', '')
2325      ->condition('status', 0)
2326      ->execute();
2327    return theme('status_report', array('requirements' => $requirements));
2328  }
2329  
2330  /**
2331   * Menu callback: run cron manually.
2332   */
2333  function system_run_cron() {
2334    // Run cron manually
2335    if (drupal_cron_run()) {
2336      drupal_set_message(t('Cron ran successfully.'));
2337    }
2338    else {
2339      drupal_set_message(t('Cron run failed.'), 'error');
2340    }
2341  
2342    drupal_goto('admin/reports/status');
2343  }
2344  
2345  /**
2346   * Menu callback: return information about PHP.
2347   */
2348  function system_php() {
2349    phpinfo();
2350    drupal_exit();
2351  }
2352  
2353  /**
2354   * Default page callback for batches.
2355   */
2356  function system_batch_page() {
2357    require_once  DRUPAL_ROOT . '/includes/batch.inc';
2358    $output = _batch_page();
2359  
2360    if ($output === FALSE) {
2361      drupal_access_denied();
2362    }
2363    elseif (isset($output)) {
2364      // Force a page without blocks or messages to
2365      // display a list of collected messages later.
2366      drupal_set_page_content($output);
2367      $page = element_info('page');
2368      $page['#show_messages'] = FALSE;
2369      return $page;
2370    }
2371  }
2372  
2373  /**
2374   * Returns HTML for an administrative block for display.
2375   *
2376   * @param $variables
2377   *   An associative array containing:
2378   *   - block: An array containing information about the block:
2379   *     - show: A Boolean whether to output the block. Defaults to FALSE.
2380   *     - title: The block's title.
2381   *     - content: (optional) Formatted content for the block.
2382   *     - description: (optional) Description of the block. Only output if
2383   *       'content' is not set.
2384   *
2385   * @ingroup themeable
2386   */
2387  function theme_admin_block($variables) {
2388    $block = $variables['block'];
2389    $output = '';
2390  
2391    // Don't display the block if it has no content to display.
2392    if (empty($block['show'])) {
2393      return $output;
2394    }
2395  
2396    $output .= '<div class="admin-panel">';
2397    if (!empty($block['title'])) {
2398      $output .= '<h3>' . $block['title'] . '</h3>';
2399    }
2400    if (!empty($block['content'])) {
2401      $output .= '<div class="body">' . $block['content'] . '</div>';
2402    }
2403    else {
2404      $output .= '<div class="description">' . $block['description'] . '</div>';
2405    }
2406    $output .= '</div>';
2407  
2408    return $output;
2409  }
2410  
2411  /**
2412   * Returns HTML for the content of an administrative block.
2413   *
2414   * @param $variables
2415   *   An associative array containing:
2416   *   - content: An array containing information about the block. Each element
2417   *     of the array represents an administrative menu item, and must at least
2418   *     contain the keys 'title', 'href', and 'localized_options', which are
2419   *     passed to l(). A 'description' key may also be provided.
2420   *
2421   * @ingroup themeable
2422   */
2423  function theme_admin_block_content($variables) {
2424    $content = $variables['content'];
2425    $output = '';
2426  
2427    if (!empty($content)) {
2428      $class = 'admin-list';
2429      if ($compact = system_admin_compact_mode()) {
2430        $class .= ' compact';
2431      }
2432      $output .= '<dl class="' . $class . '">';
2433      foreach ($content as $item) {
2434        $output .= '<dt>' . l($item['title'], $item['href'], $item['localized_options']) . '</dt>';
2435        if (!$compact && isset($item['description'])) {
2436          $output .= '<dd>' . filter_xss_admin($item['description']) . '</dd>';
2437        }
2438      }
2439      $output .= '</dl>';
2440    }
2441    return $output;
2442  }
2443  
2444  /**
2445   * Returns HTML for an administrative page.
2446   *
2447   * @param $variables
2448   *   An associative array containing:
2449   *   - blocks: An array of blocks to display. Each array should include a
2450   *     'title', a 'description', a formatted 'content' and a 'position' which
2451   *     will control which container it will be in. This is usually 'left' or
2452   *     'right'.
2453   *
2454   * @ingroup themeable
2455   */
2456  function theme_admin_page($variables) {
2457    $blocks = $variables['blocks'];
2458  
2459    $stripe = 0;
2460    $container = array();
2461  
2462    foreach ($blocks as $block) {
2463      if ($block_output = theme('admin_block', array('block' => $block))) {
2464        if (empty($block['position'])) {
2465          // perform automatic striping.
2466          $block['position'] = ++$stripe % 2 ? 'left' : 'right';
2467        }
2468        if (!isset($container[$block['position']])) {
2469          $container[$block['position']] = '';
2470        }
2471        $container[$block['position']] .= $block_output;
2472      }
2473    }
2474  
2475    $output = '<div class="admin clearfix">';
2476    $output .= theme('system_compact_link');
2477  
2478    foreach ($container as $id => $data) {
2479      $output .= '<div class="' . $id . ' clearfix">';
2480      $output .= $data;
2481      $output .= '</div>';
2482    }
2483    $output .= '</div>';
2484    return $output;
2485  }
2486  
2487  /**
2488   * Returns HTML for the output of the dashboard page.
2489   *
2490   * @param $variables
2491   *   An associative array containing:
2492   *   - menu_items: An array of modules to be displayed.
2493   *
2494   * @ingroup themeable
2495   */
2496  function theme_system_admin_index($variables) {
2497    $menu_items = $variables['menu_items'];
2498  
2499    $stripe = 0;
2500    $container = array('left' => '', 'right' => '');
2501    $flip = array('left' => 'right', 'right' => 'left');
2502    $position = 'left';
2503  
2504    // Iterate over all modules.
2505    foreach ($menu_items as $module => $block) {
2506      list($description, $items) = $block;
2507  
2508      // Output links.
2509      if (count($items)) {
2510        $block = array();
2511        $block['title'] = $module;
2512        $block['content'] = theme('admin_block_content', array('content' => $items));
2513        $block['description'] = t($description);
2514        $block['show'] = TRUE;
2515  
2516        if ($block_output = theme('admin_block', array('block' => $block))) {
2517          if (!isset($block['position'])) {
2518            // Perform automatic striping.
2519            $block['position'] = $position;
2520            $position = $flip[$position];
2521          }
2522          $container[$block['position']] .= $block_output;
2523        }
2524      }
2525    }
2526  
2527    $output = '<div class="admin clearfix">';
2528    $output .= theme('system_compact_link');
2529    foreach ($container as $id => $data) {
2530      $output .= '<div class="' . $id . ' clearfix">';
2531      $output .= $data;
2532      $output .= '</div>';
2533    }
2534    $output .= '</div>';
2535  
2536    return $output;
2537  }
2538  
2539  /**
2540   * Returns HTML for the status report.
2541   *
2542   * @param $variables
2543   *   An associative array containing:
2544   *   - requirements: An array of requirements.
2545   *
2546   * @ingroup themeable
2547   */
2548  function theme_status_report($variables) {
2549    $requirements = $variables['requirements'];
2550    $severities = array(
2551      REQUIREMENT_INFO => array(
2552        'title' => t('Info'),
2553        'class' => 'info',
2554      ),
2555      REQUIREMENT_OK => array(
2556        'title' => t('OK'),
2557        'class' => 'ok',
2558      ),
2559      REQUIREMENT_WARNING => array(
2560        'title' => t('Warning'),
2561        'class' => 'warning',
2562      ),
2563      REQUIREMENT_ERROR => array(
2564        'title' => t('Error'),
2565        'class' => 'error',
2566      ),
2567    );
2568    $output = '<table class="system-status-report">';
2569  
2570    foreach ($requirements as $requirement) {
2571      if (empty($requirement['#type'])) {
2572        $severity = $severities[isset($requirement['severity']) ? (int) $requirement['severity'] : 0];
2573        $severity['icon'] = '<div title="' . $severity['title'] . '"><span class="element-invisible">' . $severity['title'] . '</span></div>';
2574  
2575        // Output table row(s)
2576        if (!empty($requirement['description'])) {
2577          $output .= '<tr class="' . $severity['class'] . ' merge-down"><td class="status-icon">' . $severity['icon'] . '</td><td class="status-title">' . $requirement['title'] . '</td><td class="status-value">' . $requirement['value'] . '</td></tr>';
2578          $output .= '<tr class="' . $severity['class'] . ' merge-up"><td colspan="3" class="status-description">' . $requirement['description'] . '</td></tr>';
2579        }
2580        else {
2581          $output .= '<tr class="' . $severity['class'] . '"><td class="status-icon">' . $severity['icon'] . '</td><td class="status-title">' . $requirement['title'] . '</td><td class="status-value">' . $requirement['value'] . '</td></tr>';
2582        }
2583      }
2584    }
2585  
2586    $output .= '</table>';
2587    return $output;
2588  }
2589  
2590  /**
2591   * Returns HTML for the modules form.
2592   *
2593   * @param $variables
2594   *   An associative array containing:
2595   *   - form: A render element representing the form.
2596   *
2597   * @ingroup themeable
2598   */
2599  function theme_system_modules_fieldset($variables) {
2600    $form = $variables['form'];
2601  
2602    // Individual table headers.
2603    $rows = array();
2604    // Iterate through all the modules, which are
2605    // children of this fieldset.
2606    foreach (element_children($form) as $key) {
2607      // Stick it into $module for easier accessing.
2608      $module = $form[$key];
2609      $row = array();
2610      unset($module['enable']['#title']);
2611      $row[] = array('class' => array('checkbox'), 'data' => drupal_render($module['enable']));
2612      $label = '<label';
2613      if (isset($module['enable']['#id'])) {
2614        $label .= ' for="' . $module['enable']['#id'] . '"';
2615      }
2616      $row[] = $label . '><strong>' . drupal_render($module['name']) . '</strong></label>';
2617      $row[] = drupal_render($module['version']);
2618      // Add the description, along with any modules it requires.
2619      $description = drupal_render($module['description']);
2620      if ($module['#requires']) {
2621        $description .= '<div class="admin-requirements">' . t('Requires: !module-list', array('!module-list' => implode(', ', $module['#requires']))) . '</div>';
2622      }
2623      if ($module['#required_by']) {
2624        $description .= '<div class="admin-requirements">' . t('Required by: !module-list', array('!module-list' => implode(', ', $module['#required_by']))) . '</div>';
2625      }
2626      $row[] = array('data' => $description, 'class' => array('description'));
2627      // Display links (such as help or permissions) in their own columns.
2628      foreach (array('help', 'permissions', 'configure') as $key) {
2629        $row[] = array('data' => drupal_render($module['links'][$key]), 'class' => array($key));
2630      }
2631      $rows[] = $row;
2632    }
2633  
2634    return theme('table', array('header' => $form['#header'], 'rows' => $rows));
2635  }
2636  
2637  /**
2638   * Returns HTML for a message about incompatible modules.
2639   *
2640   * @param $variables
2641   *   An associative array containing:
2642   *   - message: The form array representing the currently disabled modules.
2643   *
2644   * @ingroup themeable
2645   */
2646  function theme_system_modules_incompatible($variables) {
2647    return '<div class="incompatible">' . $variables['message'] . '</div>';
2648  }
2649  
2650  /**
2651   * Returns HTML for a table of currently disabled modules.
2652   *
2653   * @param $variables
2654   *   An associative array containing:
2655   *   - form: A render element representing the form.
2656   *
2657   * @ingroup themeable
2658   */
2659  function theme_system_modules_uninstall($variables) {
2660    $form = $variables['form'];
2661  
2662    // No theming for the confirm form.
2663    if (isset($form['confirm'])) {
2664      return drupal_render($form);
2665    }
2666  
2667    // Table headers.
2668    $header = array(t('Uninstall'),
2669      t('Name'),
2670      t('Description'),
2671    );
2672  
2673    // Display table.
2674    $rows = array();
2675    foreach (element_children($form['modules']) as $module) {
2676      if (!empty($form['modules'][$module]['#required_by'])) {
2677        $disabled_message = format_plural(count($form['modules'][$module]['#required_by']),
2678          'To uninstall @module, the following module must be uninstalled first: @required_modules',
2679          'To uninstall @module, the following modules must be uninstalled first: @required_modules',
2680          array('@module' => $form['modules'][$module]['#module_name'], '@required_modules' => implode(', ', $form['modules'][$module]['#required_by'])));
2681        $disabled_message = '<div class="admin-requirements">' . $disabled_message . '</div>';
2682      }
2683      else {
2684        $disabled_message = '';
2685      }
2686      $rows[] = array(
2687        array('data' => drupal_render($form['uninstall'][$module]), 'align' => 'center'),
2688        '<strong><label for="' . $form['uninstall'][$module]['#id'] . '">' . drupal_render($form['modules'][$module]['name']) . '</label></strong>',
2689        array('data' => drupal_render($form['modules'][$module]['description']) . $disabled_message, 'class' => array('description')),
2690      );
2691    }
2692  
2693    $output  = theme('table', array('header' => $header, 'rows' => $rows, 'empty' => t('No modules are available to uninstall.')));
2694    $output .= drupal_render_children($form);
2695  
2696    return $output;
2697  }
2698  
2699  /**
2700   * Returns HTML for the Appearance page.
2701   *
2702   * @param $variables
2703   *   An associative array containing:
2704   *   - theme_groups: An associative array containing groups of themes.
2705   *
2706   * @ingroup themeable
2707   */
2708  function theme_system_themes_page($variables) {
2709    $theme_groups = $variables['theme_groups'];
2710  
2711    $output = '<div id="system-themes-page">';
2712  
2713    foreach ($variables['theme_group_titles'] as $state => $title) {
2714      if (!count($theme_groups[$state])) {
2715        // Skip this group of themes if no theme is there.
2716        continue;
2717      }
2718      // Start new theme group.
2719      $output .= '<div class="system-themes-list system-themes-list-'. $state .' clearfix"><h2>'. $title .'</h2>';
2720  
2721      foreach ($theme_groups[$state] as $theme) {
2722  
2723        // Theme the screenshot.
2724        $screenshot = $theme->screenshot ? theme('image', $theme->screenshot) : '<div class="no-screenshot">' . t('no screenshot') . '</div>';
2725  
2726        // Localize the theme description.
2727        $description = t($theme->info['description']);
2728  
2729        // Style theme info
2730        $notes = count($theme->notes) ? ' (' . join(', ', $theme->notes) . ')' : '';
2731        $theme->classes[] = 'theme-selector';
2732        $theme->classes[] = 'clearfix';
2733        $output .= '<div class="'. join(' ', $theme->classes) .'">' . $screenshot . '<div class="theme-info"><h3>' . $theme->info['name'] . ' ' . (isset($theme->info['version']) ? $theme->info['version'] : '') . $notes . '</h3><div class="theme-description">' . $description . '</div>';
2734  
2735        // Make sure to provide feedback on compatibility.
2736        if (!empty($theme->incompatible_core)) {
2737          $output .= '<div class="incompatible">' . t('This version is not compatible with Drupal !core_version and should be replaced.', array('!core_version' => DRUPAL_CORE_COMPATIBILITY)) . '</div>';
2738        }
2739        elseif (!empty($theme->incompatible_php)) {
2740          if (substr_count($theme->info['php'], '.') < 2) {
2741            $theme->info['php'] .= '.*';
2742          }
2743          $output .= '<div class="incompatible">' . t('This theme requires PHP version @php_required and is incompatible with PHP version !php_version.', array('@php_required' => $theme->info['php'], '!php_version' => phpversion())) . '</div>';
2744        }
2745        else {
2746          $output .= theme('links', array('links' => $theme->operations, 'attributes' => array('class' => array('operations', 'clearfix'))));
2747        }
2748        $output .= '</div></div>';
2749      }
2750      $output .= '</div>';
2751    }
2752    $output .= '</div>';
2753  
2754    return $output;
2755  }
2756  
2757  /**
2758   * Menu callback; present a form for deleting a date format.
2759   */
2760  function system_date_delete_format_form($form, &$form_state, $dfid) {
2761    $form['dfid'] = array(
2762      '#type' => 'value',
2763      '#value' => $dfid,
2764    );
2765    $format = system_get_date_format($dfid);
2766  
2767    $output = confirm_form($form,
2768      t('Are you sure you want to remove the format %format?', array('%format' => format_date(REQUEST_TIME, 'custom', $format->format))),
2769      'admin/config/regional/date-time/formats',
2770      t('This action cannot be undone.'),
2771      t('Remove'), t('Cancel'),
2772      'confirm'
2773    );
2774  
2775    return $output;
2776  }
2777  
2778  /**
2779   * Delete a configured date format.
2780   */
2781  function system_date_delete_format_form_submit($form, &$form_state) {
2782    if ($form_state['values']['confirm']) {
2783      $format = system_get_date_format($form_state['values']['dfid']);
2784      system_date_format_delete($form_state['values']['dfid']);
2785      drupal_set_message(t('Removed date format %format.', array('%format' => format_date(REQUEST_TIME, 'custom', $format->format))));
2786      $form_state['redirect'] = 'admin/config/regional/date-time/formats';
2787    }
2788  }
2789  
2790  /**
2791   * Menu callback; present a form for deleting a date type.
2792   */
2793  function system_delete_date_format_type_form($form, &$form_state, $format_type) {
2794    $form['format_type'] = array(
2795      '#type' => 'value',
2796      '#value' => $format_type,
2797    );
2798    $type_info = system_get_date_types($format_type);
2799  
2800    $output = confirm_form($form,
2801      t('Are you sure you want to remove the date type %type?', array('%type' => $type_info['title'])),
2802      'admin/config/regional/date-time',
2803      t('This action cannot be undone.'),
2804      t('Remove'), t('Cancel'),
2805      'confirm'
2806    );
2807  
2808    return $output;
2809  }
2810  
2811  /**
2812   * Delete a configured date type.
2813   */
2814  function system_delete_date_format_type_form_submit($form, &$form_state) {
2815    if ($form_state['values']['confirm']) {
2816      $type_info = system_get_date_types($form_state['values']['format_type']);
2817      system_date_format_type_delete($form_state['values']['format_type']);
2818      drupal_set_message(t('Removed date type %type.', array('%type' => $type_info['title'])));
2819      $form_state['redirect'] = 'admin/config/regional/date-time';
2820    }
2821  }
2822  
2823  
2824  /**
2825   * Displays the date format strings overview page.
2826   */
2827  function system_date_time_formats() {
2828    $header = array(t('Format'), array('data' => t('Operations'), 'colspan' => '2'));
2829    $rows = array();
2830  
2831    drupal_static_reset('system_get_date_formats');
2832    $formats = system_get_date_formats('custom');
2833    if (!empty($formats)) {
2834      foreach ($formats as $format) {
2835        $row = array();
2836        $row[] = array('data' => format_date(REQUEST_TIME, 'custom', $format['format']));
2837        $row[] = array('data' => l(t('edit'), 'admin/config/regional/date-time/formats/' . $format['dfid'] . '/edit'));
2838        $row[] = array('data' => l(t('delete'), 'admin/config/regional/date-time/formats/' . $format['dfid'] . '/delete'));
2839        $rows[] = $row;
2840      }
2841    }
2842  
2843    $build['date_formats_table'] = array(
2844      '#theme' => 'table',
2845      '#header' => $header,
2846      '#rows' => $rows,
2847      '#empty' => t('No custom date formats available. <a href="@link">Add date format</a>.', array('@link' => url('admin/config/regional/date-time/formats/add'))),
2848    );
2849  
2850    return $build;
2851  }
2852  
2853  /**
2854   * Allow users to add additional date formats.
2855   */
2856  function system_configure_date_formats_form($form, &$form_state, $dfid = 0) {
2857    $js_settings = array(
2858      'type' => 'setting',
2859      'data' => array(
2860        'dateTime' => array(
2861          'date-format' => array(
2862            'text' => t('Displayed as'),
2863            'lookup' => url('admin/config/regional/date-time/formats/lookup'),
2864          ),
2865        ),
2866      ),
2867    );
2868  
2869    if ($dfid) {
2870      $form['dfid'] = array(
2871        '#type' => 'value',
2872        '#value' => $dfid,
2873      );
2874      $format = system_get_date_format($dfid);
2875    }
2876  
2877    $now = ($dfid ? t('Displayed as %date', array('%date' => format_date(REQUEST_TIME, 'custom', $format->format))) : '');
2878  
2879    $form['date_format'] = array(
2880      '#type' => 'textfield',
2881      '#title' => t('Format string'),
2882      '#maxlength' => 100,
2883      '#description' => t('A user-defined date format. See the <a href="@url">PHP manual</a> for available options.', array('@url' => 'http://php.net/manual/function.date.php')),
2884      '#default_value' => ($dfid ? $format->format : ''),
2885      '#field_suffix' => ' <small id="edit-date-format-suffix">' . $now . '</small>',
2886      '#attached' => array(
2887        'js' => array(drupal_get_path('module', 'system') . '/system.js', $js_settings),
2888      ),
2889      '#required' => TRUE,
2890    );
2891  
2892    $form['actions'] = array('#type' => 'actions');
2893    $form['actions']['update'] = array(
2894      '#type' => 'submit',
2895      '#value' => ($dfid ? t('Save format') : t('Add format')),
2896    );
2897  
2898    $form['#validate'][] = 'system_add_date_formats_form_validate';
2899    $form['#submit'][] = 'system_add_date_formats_form_submit';
2900  
2901    return $form;
2902  }
2903  
2904  /**
2905   * Validate new date format string submission.
2906   */
2907  function system_add_date_formats_form_validate($form, &$form_state) {
2908    $formats = system_get_date_formats('custom');
2909    $format = trim($form_state['values']['date_format']);
2910    if (!empty($formats) && in_array($format, array_keys($formats)) && (!isset($form_state['values']['dfid']) || $form_state['values']['dfid'] != $formats[$format]['dfid'])) {
2911      form_set_error('date_format', t('This format already exists. Enter a unique format string.'));
2912    }
2913  }
2914  
2915  /**
2916   * Process new date format string submission.
2917   */
2918  function system_add_date_formats_form_submit($form, &$form_state) {
2919    $format = array();
2920    $format['format'] = trim($form_state['values']['date_format']);
2921    $format['type'] = 'custom';
2922    $format['locked'] = 0;
2923    if (!empty($form_state['values']['dfid'])) {
2924      system_date_format_save($format, $form_state['values']['dfid']);
2925      drupal_set_message(t('Custom date format updated.'));
2926    }
2927    else {
2928      $format['is_new'] = 1;
2929      system_date_format_save($format);
2930      drupal_set_message(t('Custom date format added.'));
2931    }
2932  
2933    $form_state['redirect'] = 'admin/config/regional/date-time/formats';
2934  }
2935  
2936  /**
2937   * Menu callback; Displays an overview of available and configured actions.
2938   */
2939  function system_actions_manage() {
2940    actions_synchronize();
2941    $actions = actions_list();
2942    $actions_map = actions_actions_map($actions);
2943    $options = array();
2944    $unconfigurable = array();
2945  
2946    foreach ($actions_map as $key => $array) {
2947      if ($array['configurable']) {
2948        $options[$key] = $array['label'] . '...';
2949      }
2950      else {
2951        $unconfigurable[] = $array;
2952      }
2953    }
2954  
2955    $row = array();
2956    $instances_present = db_query("SELECT aid FROM {actions} WHERE parameters <> ''")->fetchField();
2957    $header = array(
2958      array('data' => t('Action type'), 'field' => 'type'),
2959      array('data' => t('Label'), 'field' => 'label'),
2960      array('data' => $instances_present ? t('Operations') : '', 'colspan' => '2')
2961    );
2962    $query = db_select('actions')->extend('PagerDefault')->extend('TableSort');
2963    $result = $query
2964      ->fields('actions')
2965      ->limit(50)
2966      ->orderByHeader($header)
2967      ->execute();
2968  
2969    foreach ($result as $action) {
2970      $row[] = array(
2971        array('data' => $action->type),
2972        array('data' => check_plain($action->label)),
2973        array('data' => $action->parameters ? l(t('configure'), "admin/config/system/actions/configure/$action->aid") : ''),
2974        array('data' => $action->parameters ? l(t('delete'), "admin/config/system/actions/delete/$action->aid") : '')
2975      );
2976    }
2977  
2978    if ($row) {
2979      $pager = theme('pager');
2980      if (!empty($pager)) {
2981        $row[] = array(array('data' => $pager, 'colspan' => '3'));
2982      }
2983      $build['system_actions_header'] = array('#markup' => '<h3>' . t('Available actions:') . '</h3>');
2984      $build['system_actions_table'] = array('#markup' => theme('table', array('header' => $header, 'rows' => $row)));
2985    }
2986  
2987    if ($actions_map) {
2988      $build['system_actions_manage_form'] = drupal_get_form('system_actions_manage_form', $options);
2989    }
2990  
2991    return $build;
2992  }
2993  
2994  /**
2995   * Define the form for the actions overview page.
2996   *
2997   * @param $form_state
2998   *   An associative array containing the current state of the form; not used.
2999   * @param $options
3000   *   An array of configurable actions.
3001   * @return
3002   *   Form definition.
3003   *
3004   * @ingroup forms
3005   * @see system_actions_manage_form_submit()
3006   */
3007  function system_actions_manage_form($form, &$form_state, $options = array()) {
3008    $form['parent'] = array(
3009      '#type' => 'fieldset',
3010      '#title' => t('Create an advanced action'),
3011      '#attributes' => array('class' => array('container-inline')),
3012    );
3013    $form['parent']['action'] = array(
3014      '#type' => 'select',
3015      '#title' => t('Action'),
3016      '#title_display' => 'invisible',
3017      '#options' => $options,
3018      '#empty_option' => t('Choose an advanced action'),
3019    );
3020    $form['parent']['actions'] = array('#type' => 'actions');
3021    $form['parent']['actions']['submit'] = array(
3022      '#type' => 'submit',
3023      '#value' => t('Create'),
3024    );
3025    return $form;
3026  }
3027  
3028  /**
3029   * Process system_actions_manage form submissions.
3030   *
3031   * @see system_actions_manage_form()
3032   */
3033  function system_actions_manage_form_submit($form, &$form_state) {
3034    if ($form_state['values']['action']) {
3035      $form_state['redirect'] = 'admin/config/system/actions/configure/' . $form_state['values']['action'];
3036    }
3037  }
3038  
3039  /**
3040   * Menu callback; Creates the form for configuration of a single action.
3041   *
3042   * We provide the "Description" field. The rest of the form is provided by the
3043   * action. We then provide the Save button. Because we are combining unknown
3044   * form elements with the action configuration form, we use an 'actions_' prefix
3045   * on our elements.
3046   *
3047   * @param $action
3048   *   Hash of an action ID or an integer. If it is a hash, we are
3049   *   creating a new instance. If it is an integer, we are editing an existing
3050   *   instance.
3051   * @return
3052   *   A form definition.
3053   *
3054   * @see system_actions_configure_validate()
3055   * @see system_actions_configure_submit()
3056   */
3057  function system_actions_configure($form, &$form_state, $action = NULL) {
3058    if ($action === NULL) {
3059      drupal_goto('admin/config/system/actions');
3060    }
3061  
3062    $actions_map = actions_actions_map(actions_list());
3063    $edit = array();
3064  
3065    // Numeric action denotes saved instance of a configurable action.
3066    if (is_numeric($action)) {
3067      $aid = $action;
3068      // Load stored parameter values from database.
3069      $data = db_query("SELECT * FROM {actions} WHERE aid = :aid", array(':aid' => $aid))->fetch();
3070      $edit['actions_label'] = $data->label;
3071      $edit['actions_type'] = $data->type;
3072      $function = $data->callback;
3073      $action = drupal_hash_base64($data->callback);
3074      $params = unserialize($data->parameters);
3075      if ($params) {
3076        foreach ($params as $name => $val) {
3077          $edit[$name] = $val;
3078        }
3079      }
3080    }
3081    // Otherwise, we are creating a new action instance.
3082    else {
3083      $function = $actions_map[$action]['callback'];
3084      $edit['actions_label'] = $actions_map[$action]['label'];
3085      $edit['actions_type'] = $actions_map[$action]['type'];
3086    }
3087  
3088    $form['actions_label'] = array(
3089      '#type' => 'textfield',
3090      '#title' => t('Label'),
3091      '#default_value' => $edit['actions_label'],
3092      '#maxlength' => '255',
3093      '#description' => t('A unique label for this advanced action. This label will be displayed in the interface of modules that integrate with actions, such as Trigger module.'),
3094      '#weight' => -10
3095    );
3096    $action_form = $function . '_form';
3097    $form = array_merge($form, $action_form($edit));
3098    $form['actions_type'] = array(
3099      '#type' => 'value',
3100      '#value' => $edit['actions_type'],
3101    );
3102    $form['actions_action'] = array(
3103      '#type' => 'hidden',
3104      '#value' => $action,
3105    );
3106    // $aid is set when configuring an existing action instance.
3107    if (isset($aid)) {
3108      $form['actions_aid'] = array(
3109        '#type' => 'hidden',
3110        '#value' => $aid,
3111      );
3112    }
3113    $form['actions_configured'] = array(
3114      '#type' => 'hidden',
3115      '#value' => '1',
3116    );
3117    $form['actions'] = array('#type' => 'actions');
3118    $form['actions']['submit'] = array(
3119      '#type' => 'submit',
3120      '#value' => t('Save'),
3121      '#weight' => 13
3122    );
3123  
3124    return $form;
3125  }
3126  
3127  /**
3128   * Validate system_actions_configure() form submissions.
3129   */
3130  function system_actions_configure_validate($form, &$form_state) {
3131    $function = actions_function_lookup($form_state['values']['actions_action']) . '_validate';
3132    // Hand off validation to the action.
3133    if (function_exists($function)) {
3134      $function($form, $form_state);
3135    }
3136  }
3137  
3138  /**
3139   * Process system_actions_configure() form submissions.
3140   */
3141  function system_actions_configure_submit($form, &$form_state) {
3142    $function = actions_function_lookup($form_state['values']['actions_action']);
3143    $submit_function = $function . '_submit';
3144  
3145    // Action will return keyed array of values to store.
3146    $params = $submit_function($form, $form_state);
3147    $aid = isset($form_state['values']['actions_aid']) ? $form_state['values']['actions_aid'] : NULL;
3148  
3149    actions_save($function, $form_state['values']['actions_type'], $params, $form_state['values']['actions_label'], $aid);
3150    drupal_set_message(t('The action has been successfully saved.'));
3151  
3152    $form_state['redirect'] = 'admin/config/system/actions/manage';
3153  }
3154  
3155  /**
3156   * Create the form for confirmation of deleting an action.
3157   *
3158   * @see system_actions_delete_form_submit()
3159   * @ingroup forms
3160   */
3161  function system_actions_delete_form($form, &$form_state, $action) {
3162    $form['aid'] = array(
3163      '#type' => 'hidden',
3164      '#value' => $action->aid,
3165    );
3166    return confirm_form($form,
3167      t('Are you sure you want to delete the action %action?', array('%action' => $action->label)),
3168      'admin/config/system/actions/manage',
3169      t('This cannot be undone.'),
3170      t('Delete'),
3171      t('Cancel')
3172    );
3173  }
3174  
3175  /**
3176   * Process system_actions_delete form submissions.
3177   *
3178   * Post-deletion operations for action deletion.
3179   */
3180  function system_actions_delete_form_submit($form, &$form_state) {
3181    $aid = $form_state['values']['aid'];
3182    $action = actions_load($aid);
3183    actions_delete($aid);
3184    watchdog('user', 'Deleted action %aid (%action)', array('%aid' => $aid, '%action' => $action->label));
3185    drupal_set_message(t('Action %action was deleted', array('%action' => $action->label)));
3186    $form_state['redirect'] = 'admin/config/system/actions/manage';
3187  }
3188  
3189  /**
3190   * Post-deletion operations for deleting action orphans.
3191   *
3192   * @param $orphaned
3193   *   An array of orphaned actions.
3194   */
3195  function system_action_delete_orphans_post($orphaned) {
3196    foreach ($orphaned as $callback) {
3197      drupal_set_message(t("Deleted orphaned action (%action).", array('%action' => $callback)));
3198    }
3199  }
3200  
3201  /**
3202   * Remove actions that are in the database but not supported by any enabled module.
3203   */
3204  function system_actions_remove_orphans() {
3205    actions_synchronize(TRUE);
3206    drupal_goto('admin/config/system/actions/manage');
3207  }

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