block_admin_pagination.module

<?php
/**
 * @file
 * block_admin_pagination.module
 */

function block_admin_pagination_preprocess_block_admin_pagination_display_form(&$variables) {
  // this is mostly ported over wholesale from block.admin.inc, with changes
  $variables['block_regions'] = $variables['form']['block_regions']['#value'];
  if (isset($variables['block_regions'][BLOCK_REGION_NONE])) {
    $variables['block_regions'][BLOCK_REGION_NONE] = t('Disabled');
  }

  foreach ($variables['block_regions'] as $key => $value) {
    // Initialize an empty array for the region.
    $variables['block_listing'][$key] = array();
  }

  // Initialize disabled blocks array.
  $variables['block_listing'][BLOCK_REGION_NONE] = array();

  // Add each block in the form to the appropriate place in the block listing.
  foreach (element_children($variables['form']['blocks']) as $i) {
    $block = &$variables['form']['blocks'][$i];

    // Fetch the region for the current block.
    $region = (isset($block['region']['#default_value']) ? $block['region']['#default_value'] : BLOCK_REGION_NONE);

    // Set special classes needed for table drag and drop.
    $block['region']['#attributes']['class'] = array('block-region-select', 'block-region-' . $region);
    $block['weight']['#attributes']['class'] = array('block-weight', 'block-weight-' . $region);
    // if the block is in an enabled region, render its form now
    if ($region != BLOCK_REGION_NONE) {
      $variables['block_listing'][$region][$i] = new stdClass();
      $variables['block_listing'][$region][$i]->row_class = !empty($block['#attributes']['class']) ? implode(' ', $block['#attributes']['class']) : '';
      $variables['block_listing'][$region][$i]->block_modified = !empty($block['#attributes']['class']) && in_array('block-modified', $block['#attributes']['class']);
      $variables['block_listing'][$region][$i]->block_title = drupal_render($block['info']);
      $variables['block_listing'][$region][$i]->region_select = drupal_render($block['region']) . drupal_render($block['theme']);
      $variables['block_listing'][$region][$i]->weight_select = drupal_render($block['weight']);
      $variables['block_listing'][$region][$i]->configure_link = drupal_render($block['configure']);
      $variables['block_listing'][$region][$i]->delete_link = !empty($block['delete']) ? drupal_render($block['delete']) : '';
      $variables['block_listing'][$region][$i]->printed = FALSE;
    }
    else {
      // if it's a disabled block, just store it for the time being
      // we need the count
      $variables['block_listing'][$region][$i] = $block;
      unset($variables['form']['blocks'][$i]);
    }
  }

  // set up the pager
  $number_per_page = variable_get('block_admin_pager_number_per_page', 25);
  $total = count($variables['block_listing'][BLOCK_REGION_NONE]);
  $page = pager_default_initialize($total, $number_per_page);

  // label the disabled region more appropriately
  $beginning = ($page * $number_per_page) + 1;
  $end = ($page + 1) * $number_per_page;
  $end = $end > $total ? $total : $end;
  $variables['block_regions'][BLOCK_REGION_NONE] = t('Disabled (@beginning - @end of @total)', array('@beginning' => $beginning, '@end' => $end, '@total' => $total));

  $index = 0; // this is strictly for tracking where we are in the array, for the 'slice'
  foreach ($variables['block_listing'][BLOCK_REGION_NONE] as $delta => $block) {
    // because this is an assoc. array we can't do a real slice. fake it.
    if (($index < ($page * $number_per_page)) || ($index > (($page * $number_per_page + $number_per_page) - 1))) {
      // it's outside our pager range; just toss it
      unset($variables['block_listing'][BLOCK_REGION_NONE][$delta]);
    }
    else {
      // now do the processing on the disabled blocks that happened earlier for the other regions
      $variables['block_listing'][BLOCK_REGION_NONE][$delta] = new stdClass();
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->row_class = !empty($block['#attributes']['class']) ? implode(' ', $block['#attributes']['class']) : '';
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->block_modified = !empty($block['#attributes']['class']) && in_array('block-modified', $block['#attributes']['class']);
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->block_title = drupal_render($block['info']);
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->region_select = drupal_render($block['region']) . drupal_render($block['theme']);
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->weight_select = drupal_render($block['weight']);
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->configure_link = drupal_render($block['configure']);
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->delete_link = !empty($block['delete']) ? drupal_render($block['delete']) : '';
      $variables['block_listing'][BLOCK_REGION_NONE][$delta]->printed = FALSE;
    }
    $index++;
  }

  $variables['form_submit'] = drupal_render_children($variables['form']);


  $variables['form_submit'] = '<h4>See more Disabled blocks</h4>' . theme('pager', array('tags' => NULL)) . $variables['form_submit'];
}

/**
 * Implements hook_menu().
 */
function block_admin_pagination_menu() {
  $items['admin/config/user-interface/block-admin-pagination'] = array(
    'title' => 'Block Admin Pagination',
    'description' => 'Configure settings for Block admin pagination',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('block_admin_pagination_settings_form'),
    'access arguments' => array('administer block admin pagination'),
  );

  return $items;
}

/**
 * Implements hook_permission().
 */
function block_admin_pagination_permission() {
  return array(
    'administer block admin pagination' =>  array(
      'title' => t('Administer Block Admin Pagination'),
      'description' => t('Configure settings for the Block Admin Pagination module.'),
    ),
  );
}

/**
 * Settings form for Block Admin Pagination
 */
function block_admin_pagination_settings_form() {
  $form = array();
  $form['block_admin_pager_number_per_page'] = array(
    '#type' => 'textfield',
    '#title' => t('Number of Disabled Blocks Per Page'),
    '#description' => t('The number of disabled blocks you want to appear on a single block admin page. This should be no higher than 50.'),
    '#default_value' => variable_get('block_admin_pager_number_per_page', 25),
  );

  $form['#validate'][] = 'block_admin_pagination_settings_form_validate';
  return system_settings_form($form);
}

function block_admin_pagination_settings_form_validate($form, &$form_state) {
  $value = $form_state['values']['block_admin_pager_number_per_page'];
  if (!is_numeric($value) || ($value < 1) || ($value > 50)) {
    form_set_error('block_admin_pager_number_per_page', t('The number of items per page must be an integer between 1 and 50.'));
 }
}

/**
 * Form submission handler for the main blocks administration form.
 *
 * @see block_admin_pagination_display_form()
 */
function block_admin_pagination_display_form_submit($form, &$form_state) {
  $transaction = db_transaction();
  try {
    foreach ($form_state['values']['blocks'] as $block) {
      $block['status'] = (int) (($block['region'] != BLOCK_REGION_NONE) && !empty($block['region']));
      $block['region'] = $block['status'] ? $block['region'] : '-1';

      db_update('block')
        ->fields(array(
          'status' => $block['status'],
          'weight' => $block['weight'],
          'region' => $block['region'],
        ))
        ->condition('module', $block['module'])
        ->condition('delta', $block['delta'])
        ->condition('theme', $block['theme'])
        ->execute();
    }
  }
  catch (Exception $e) {
    $transaction->rollback();
    watchdog_exception('block', $e);
    throw $e;
  }
  drupal_set_message(t('The block settings have been updated.'));
  cache_clear_all();
}

/**
 * Implements hook_theme().
 */
function block_admin_pagination_theme($existing, $type, $theme, $path) {
  return array(
    'block_admin_pagination_display_form' => array(
      'template' => 'block-admin-pagination-display-form',
      'render element' => 'form',
    ),
  );
}

/**
 * Implements hook_form_alter().
 */
function block_admin_pagination_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id === 'block_admin_display_form') {
    $form['#theme'] = 'block_admin_pagination_display_form';
    foreach ($form['#submit'] as $idx => $submit_hook) {
      if ($submit_hook == 'block_admin_display_form_submit') {
        unset($form['#submit'][$idx]);
        $form['#submit'][] = 'block_admin_pagination_display_form_submit';
      }
    }
  }
}