modules/ddblock/ddblock.module

<?php
// $Id: ddblock.module,v 1.10 2009/02/26 14:18:29 ppblaauw Exp $


/**
 * @file
 * Enables your site to display dynamic content in a block.
 */

/**
 * Implementation of hook_help().
 */
function ddblock_help($path, $arg) {
  switch ($path) {
    case "admin/help#ddblock":
      $output = '<p>'. t('Display content dynamically in a block using the jQuery Cycle plugin and the jQuery Easing plugin') .'</p>';
      $output .='<p>'. t('There are three methods to provide content for a dynamic display block. An input folder with images, a node from a content type or by making an instance of any block to use the block content of the original block as content for the dynamic display block') .'</p>';
      return $output;
  }
}

function ddblock_init_js_css() {
  // get module path to dynamic display block module
  $ddblock_path = drupal_get_path('module', 'ddblock');

  //add jcycle plugin
  drupal_add_js($ddblock_path .'/js/jquery.cycle.all.min.js', 'module');

  //add easing plugin
  drupal_add_js($ddblock_path .'/js/jquery.easing.1.1.1.js', 'module');

  // add ddblock js file
  drupal_add_js($ddblock_path .'/js/json2.pack.js', 'module');

  // add ddblock js file
  drupal_add_js($ddblock_path .'/js/ddblock.js', 'module');

  // add Cascading style sheet
  drupal_add_css($ddblock_path .'/ddblock.css', 'module', 'all', TRUE);
};


/**
 * Implementation of hook_menu().
 */
function ddblock_menu() {

  // add ddblock
  $items['admin/settings/ddblock'] = array(
    'title' => t('Dynamic display block'),
    'description' => t('Configure settings for dynamic display block module.'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('ddblock_block_add_form'),
    'access arguments' => array('administer dynamic display blocks'),
    'type' => MENU_NORMAL_ITEM,
    'file' => 'ddblock.admin.inc',
  );

  // list tab in settings page.
  $items['admin/settings/ddblock/list'] = array(
    'title' => t('List'),
    'page arguments' => array('ddblock_block_add_form'),
    'access arguments' => array('administer dynamic display blocks'),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -10,
  );

  // Settings tab in settings page.
  $items['admin/settings/ddblock/settings'] = array(
    'title' => t('Settings'),
    'page arguments' => array('ddblock_settings_form'),
    'access arguments' => array('administer dynamic display blocks'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 10,
    'file' => 'ddblock.admin.inc',
  );

  // Edit dynamic display block.
  $items['admin/settings/ddblock/edit/%'] = array(
    'title' => t('Edit dynamic display block'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('ddblock_block_edit_form', 4),
    'access arguments' => array('administer dynamic display blocks'),
    'type' => MENU_CALLBACK,
    'file' => 'ddblock.admin.inc',
  );

  // Delete dynamic display block or instance.
  $items['admin/settings/ddblock/delete/%'] = array(
    'title' => t('Delete dynamic display block'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('ddblock_block_confirm_delete_form', 4),
    'access arguments' => array('administer dynamic display blocks'),
    'type' => MENU_CALLBACK,
    'file' => 'ddblock.admin.inc',
  );

  // Add ddblock instance.
  $items['admin/settings/ddblock/instances'] = array(
    'title' => t('Instances'),
    'description' => t('Create and delete instances of blocks.'),
    'page callback' =>  'ddblock_instances',
    'access callback' => 'user_access',
    'access arguments' => array('administer blocks'),
    'type' => MENU_LOCAL_TASK,
    'weight' => -1,
  );

  // Ahah update nodes to choose of content type.
  $items['ddblock/js/select_nodes'] = array(
    'page callback' => 'ddblock_select_nodes_js',
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Implementation of hook_perm().
 */
function ddblock_perm() {
  return array('administer dynamic display blocks', 'view dynamic display blocks');
}

/**
 * Implementation of hook_block().
 */
function ddblock_block($op='list', $delta=0, $edit = array()) {
  switch ($op) {
    // show info in block list on block administration page.
    case 'list':
      $blocks = ddblock_get_blocks(NULL);
      $list = array();
      foreach ($blocks as $block) {
        $list[$block->delta] = array('info' => check_plain($block->title));
        // Don't cache blocks.
        $list[$block->delta]['cache'] = BLOCK_NO_CACHE;
      }
      return $list;

    // the configuration page of the block.
    case 'configure':
      // if block is a ddblock instance invoke configure option of original block.
      // with form_alter the ddblock settings are added.
      $block = ddblock_get_blocks($delta);
      if ($block->enabled) {
        $module = $block->module;
        $delta_original = $block->delta_original;
        return module_invoke($module, 'block', $op, $delta_original);
      }

      // if block is a ddblock invoke the block configure page.
      return ddblock_block_configure($delta);

    // save configuraton settings.
    case 'save':
      //all blocks are instances of ddblock.
      $module = 'ddblock';
      ddblock_set_configuration_settings($module, $delta, $edit);
      return;

    // show block content (this is set to default).
    case 'view': default:
      //all blocks are instances of ddblock.
      $module = 'ddblock';

      if (user_access('view dynamic display blocks')) {
        $block['subject'] = ddblock_subject($module, $delta);
        $block['content'] = ddblock_content($module, $delta);
        if (!empty($block['content'])) {
          return $block;
        }
      }
      return;
  }
}

/**
 * Return all or one dynamic display block.
 *
 * @param $delta
 *   Optional. Retreive a single block based on this delta. If none specified,
 *   all blocks are returned.
 * @param $reset
 *   Optional. Boolean value to reset the interal cache of this function.
 * @return
 *   array of dynamic display blocks.
 */
function ddblock_get_blocks($delta = NULL, $reset = FALSE) {
  static $blocks;

  if (!isset($blocks) || $reset) {
    $blocks = array();
    $result = db_query("SELECT * FROM {ddblock_block}");
    while ($block = db_fetch_object($result)) {
      $blocks[$block->delta] = $block;
    }
  }

  return is_numeric($delta) ? $blocks[$delta] : $blocks;
}

/**
 * Block configuration page of dynamic display block blocks added to standard block configuration page.
 *
 * @param $delta
 *   Blocknumber of the block.
 *
 * @return
 *   form with configuration settings.
 */
function ddblock_block_configure($delta) {

  // get saved or default configuration settings.
  $configuration_settings = ddblock_get_configuration_settings('ddblock', $delta);

  $container = _ddblock_get_variable($configuration_settings['container'], 'img');
  $content_type = _ddblock_get_variable($configuration_settings['content_type'], 'none');
  $custom_jquery = _ddblock_get_variable($configuration_settings['custom_jquery'], '');
  // get folder relative to the drupal folder settings
  $folder = _ddblock_get_variable($configuration_settings['folder'], 'images/ddblock');
  $fx = _ddblock_get_variable($configuration_settings['fx'], "fade");
  $height = _ddblock_get_variable($configuration_settings['height'], 195);
  $ignore_files = _ddblock_get_variable($configuration_settings['ignore_files'], '');
  $image_height = _ddblock_get_variable($configuration_settings['image_height'], 183);
  $image_width = _ddblock_get_variable($configuration_settings['image_width'], 183);
  $imgcache_toggle = _ddblock_get_variable($configuration_settings['imgcache_toggle'], 0);
  $imgcache_slide = _ddblock_get_variable($configuration_settings['imgcache_slide'], '<none>');
  $imgcache_pager_item = _ddblock_get_variable($configuration_settings['imgcache_pager_item'], '<none>');
  $input_type = _ddblock_get_variable($configuration_settings['input_type'], 'images');
  $max_image = _ddblock_get_variable($configuration_settings['max_image'], 5);
  $next = _ddblock_get_variable($configuration_settings['next'], 0);
  $nodes = _ddblock_get_variable($configuration_settings['nodes'], '');
  $node_body_teaser = _ddblock_get_variable($configuration_settings['node_body_teaser'], 'body');
  $order = _ddblock_get_variable($configuration_settings['order'], 'asc');
  $overflow = _ddblock_get_variable($configuration_settings['overflow'], 1);
  $pause = _ddblock_get_variable($configuration_settings['pause'], 1);
  $pager_toggle = _ddblock_get_variable($configuration_settings['pager_toggle'], 0);
  $pager = _ddblock_get_variable($configuration_settings['pager'], 'none');
  $pager_event = _ddblock_get_variable($configuration_settings['pager_event'], 'click');
  $pager2 = _ddblock_get_variable($configuration_settings['pager2'], 0);
  $pager2_event = _ddblock_get_variable($configuration_settings['pager2_event'], 'click');
  $pager2_position = _ddblock_get_variable($configuration_settings['pager2_position'], array('slide' => 'slide', 'pager' => 0));
  $pager2_slide_prev = _ddblock_get_variable($configuration_settings['pager2_slide_prev'], '');
  $pager2_slide_next = _ddblock_get_variable($configuration_settings['pager2_slide_next'], '');
  $pager2_slide_hide = _ddblock_get_variable($configuration_settings['pager2_slide_hide'], 1);
  $pager2_pager_prev = _ddblock_get_variable($configuration_settings['pager2_pager_prev'], 'prev');
  $pager2_pager_next = _ddblock_get_variable($configuration_settings['pager2_pager_next'], 'next');
  $pager2_pager_hide = _ddblock_get_variable($configuration_settings['pager2_pager_hide'], 1);
  $pager_fast = _ddblock_get_variable($configuration_settings['pager_fast'], 1);
  $pager_pause = _ddblock_get_variable($configuration_settings['pager_pause'], 1);
  if (($pager == 'number-pager') || ($pager2 == 1)) {
    $pager_height = _ddblock_get_variable($configuration_settings['pager_height'], 25);
    $pager_width = _ddblock_get_variable($configuration_settings['pager_width'], 195);
  }
  else {
    $pager_height = _ddblock_get_variable($configuration_settings['pager_height'], 63);
    $pager_width = _ddblock_get_variable($configuration_settings['pager_width'], 195);
  }
  $speed = _ddblock_get_variable($configuration_settings['speed'], 500);
  $timeout = _ddblock_get_variable($configuration_settings['timeout'], 5000);
  $width = _ddblock_get_variable($configuration_settings['width'], 195);

  // get module path to dynamic display block module
  $ddblock_path = drupal_get_path('module', 'ddblock');
  // add ddblock js file
  drupal_add_js($ddblock_path .'/js/ddblock.admin.js', 'module');

  // Need this for AJAX.
  $form['#cache'] = TRUE;

  // content settings: what to use as content for the dynamic display block.
  $form['content'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => t('Content settings'),
    '#prefix' => '<div id="ddblock-content-settings">',
    '#suffix' => '</div>',
    '#weight' => -3,
  );

  $options = array('images' => t('Image folder'), 'nodes' => t('Content type'));
  $form['content']['input_type'] = array(
    '#type' => 'select',
    '#title' => t('Input type'),
    '#default_value' => $input_type,
    '#options' => $options,
    '#multiple' => FALSE,
    '#required' => TRUE,
    '#description' => t("Input of the dynamic display block."),
    '#weight' => -7,

  );

  // image folder settings.
  $form['content']['image_folder'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => t('Image folder settings'),
    '#prefix' => '<div id="ddblock-image-folder-settings-wrapper">',
    '#suffix' => '</div>',
    '#weight' => -6,
  );

  $form['content']['image_folder']['folder'] = array(
    '#type' => 'textfield',
    '#title' => t('Image Folder'),
    '#default_value' => $folder,
    '#size' => 25,
    '#maxlength' => 100,
    '#required' => FALSE,
    '#description' => t("The folder containing image files to be used as the content of dynamic display block. The folder is relative to the drupal files path in admin > settings > file-system. e.g. <strong>images/ddblock</strong>."),
  );

  $form['content']['image_folder']['ignore_files'] = array(
    '#type' => 'textfield',
    '#title' => t('Ignore files'),
    '#default_value' => $ignore_files,
    '#required' => FALSE,
    '#description' => t("Ignore these files to be shown. e.g. ignore file with _thumbnail, _preview in the file_name.<br />
      You can use a comma seprated list"),
  );


  $form['content']['image_folder']['max_image'] = array(
    '#type' => 'textfield',
    '#title' => t('Number of images'),
    '#default_value' => $max_image,
    '#required' => FALSE,
    '#description' => t("The number of images to show in the block."),
  );

  // content type settings.
  $form['content']['content_types'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => t('Content type settings'),
    '#prefix' => '<div id="ddblock-content-types-settings-wrapper">',
    '#suffix' => '</div>',
    '#weight' => -5,
  );

  //get possible content types from settings.
  $node_types = variable_get('ddblock_node_type', array());
  foreach ($node_types as $key => $value ) {
    if ($value) {
      $content_types[$key] = $value;
    }
  }

  // add a none option to the content types to choose from.
  $content_types['none'] = t("None");

  $form['content']['content_types']['content_type'] = array(
    '#type' => 'select',
    '#title' => t('Content Type'),
    '#default_value' => $content_type,
    '#options' => $content_types,
    '#description' => t("The nodes of the content type to be used as content of dynamic display block."),
    '#attributes' => array('class' => 'content-type-select'),
    '#ahah' => array(
      'path' => 'ddblock/js/select_nodes',
      'wrapper' => 'select-nodes-wrapper',
      'effect' => 'slide',
    ),
  );

  ddblock_select_nodes_form($form, $content_type, $nodes);

  $options = array('body' => t('Body'),
                   'teaser' => t('Teaser'),
                  );
  $form['content']['content_types']['node_body_teaser'] = array(
    '#type' => 'radios',
    '#title' => t('Node content'),
    '#default_value' => $node_body_teaser,
    '#options' => $options,
    '#multiple' => FALSE,
    '#required' => TRUE,
    '#description' => t("Show node body or teaser"),
  );


  // if image cache module exist make it possible to use image cache presets
  if ((module_exists('imagecache')) && (is_array(imagecache_presets()))) {
    $imgcache_options = array('<none>' => '<none>');
    // get imagecache presets using imagecache function
    foreach (imagecache_presets() as $preset) {
      $name = $preset['presetname'];
      $imgcache_options[$name] = $name;
    }
    $imgcache_slide_desc = t("Imagecache preset to use for slide image");
    $imgcache_pager_item_desc = t("Imagecache preset to use for pager-item image. Only for themes that use an image in the pager");

    // Image cache toggle
    $form['block_settings']['imgcache_toggle'] = array(
      '#type' => 'checkbox',
      '#title' => t('Use imagecache presets'),
      '#default_value' => $imgcache_toggle,
      '#required' => FALSE,
      '#description' => t("Use imagecache presets for images"),
      '#weight' => -5,
    );

    // Image cache settings.
    $form['block_settings']['imgcache'] = array(
      '#type' => 'fieldset',
      '#collapsible' => TRUE,
      '#title' => t('Image cache preset settings'),
      '#prefix' => '<div id="ddblock-imgcache-settings-wrapper"'. $extra .'>',
      '#suffix' => '</div>',
      '#weight' => -4,
    );

    $form['block_settings']['imgcache']['imgcache_slide'] = array(
      '#type' => 'select',
      '#title' => t('Imagecache slide image'),
      '#default_value' => $imgcache_slide,
      '#options' => $imgcache_options,
      '#multiple' => FALSE,
      '#required' => FALSE,
      '#description' => $imgcache_slide_desc,
      '#weight' => 1,
    );

    $form['block_settings']['imgcache']['imgcache_pager_item'] = array(
      '#type' => 'select',
      '#title' => t('Imagecache pager-item image'),
      '#default_value' => $imgcache_pager_item,
      '#options' => $imgcache_options,
      '#multiple' => FALSE,
      '#required' => FALSE,
      '#description' => $imgcache_pager_item_desc,
      '#weight' => 2,
    );

  }

  // content container settings.
  $form['content']['content_container'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => t('Content container settings'),
    '#weight' => -4,
  );

  $form['content']['content_container']['container'] = array(
    '#type' => 'textfield',
    '#title' => t('Content container'),
    '#default_value' => $container,
    '#required' => FALSE,
    '#description' => t("Container of the content to show, eg. img, to show images."),
  );

  $form['content']['content_container']['overflow'] = array(
    '#type' => 'checkbox',
    '#title' => t('Overflow hidden'),
    '#default_value' => $overflow,
    '#required' => FALSE,
    '#description' => t("Hide the overflow of the container"),
  );

  $form['content']['content_container']['height'] = array(
    '#type' => 'textfield',
    '#title' => t('Height'),
    '#default_value' => $height,
    '#required' => FALSE,
    '#description' => t("Height of the content to show"),
  );

  $form['content']['content_container']['width'] = array(
    '#type' => 'textfield',
    '#title' => t('Width'),
    '#default_value' => $width,
    '#required' => FALSE,
    '#description' => t("Width of the content to show"),
  );

  // Image settings.
  $form['content']['images'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => t('Image settings'),
    '#description' => t('Set to 0 (zero) for both the height and the width to be able to use the original image size or imagecache presets'),
    '#weight' => -3,
  );
  $form['content']['images']['image_height'] = array(
    '#type' => 'textfield',
    '#title' => t('Height'),
    '#default_value' => $image_height,
    '#required' => FALSE,
    '#description' => t("Height of the image to show"),
  );

  $form['content']['images']['image_width'] = array(
    '#type' => 'textfield',
    '#title' => t('Width'),
    '#default_value' => $image_width,
    '#required' => FALSE,
    '#description' => t("Width of the image to show"),
  );

  //wrapper for ddblock block settings
  $form['block_settings']['#prefix'] = '<div id="ddblock-block-settings">';
  $form['block_settings']['#suffix'] = '</div>';

  $form['block_settings']['settings'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#title' => t('Settings'),
    '#weight' => -2,
  );

  $options =_ddblock_get_effects();
  $form['block_settings']['settings']['fx'] = array(
    '#type' => 'select',
    '#title' => t('Transition Effect'),
    '#default_value' => $fx,
    '#options' => $options,
    '#multiple' => FALSE,
    '#required' => TRUE,
    '#description' => t("The transition effect between content.<br />(all for random effect per slide, none for no effect)<br />Multiple effects can be set in the Custom jQuery Cycle Plugin Settings."),
  );

  $options = drupal_map_assoc(array(0, 250, 500, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 15000, 20000));

  $form['block_settings']['settings']['speed'] = array(
    '#type' => 'select',
    '#title' => t('Speed'),
    '#default_value' => $speed,
    '#options' => $options,
    '#required' => TRUE,
    '#description' => t("Speed of the transitions (1000 = 1 second, 0 = direct)."),
  );

  $options = drupal_map_assoc(array(0, 250, 500, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 15000, 20000, 30000));
  $form['block_settings']['settings']['timeout'] = array(
    '#type' => 'select',
    '#title' => t('Timeout'),
    '#default_value' => $timeout,
    '#options' => $options,
    '#required' => TRUE,
    '#description' => t("The time (in milliseconds) between transitions (1000 = 1 second, 0 to disable auto advance)."),
  );

  $options = array(
    'none' => t('None'),
    'asc' => t('Ascending'),
    'desc' => t('Descending'),
    'random' => t('Random'),
  );
  $form['block_settings']['settings']['order'] = array(
    '#type' => 'radios',
    '#title' => t('Sort Order'),
    '#default_value' => $order,
    '#options' => $options,
    '#multiple' => FALSE,
    '#required' => TRUE,
    '#description' => t("The display order of the content. None for using the original content order."),
  );

  $form['block_settings']['settings']['pause'] = array(
    '#type' => 'checkbox',
    '#title' => t('Pause'),
    '#default_value' => $pause,
    '#description' => t("Enable users to pause the cycle by hovering on the content."),
  );

  $form['block_settings']['settings']['next'] = array(
    '#type' => 'checkbox',
    '#title' => t('Next'),
    '#default_value' => $next,
    '#description' => t("Enable users to advanced to the next content by clicking on the content."),
  );

  // pager settings toggle
  $form['block_settings']['settings']['pager_toggle'] = array(
    '#type' => 'checkbox',
    '#title' => t('Use Pager'),
    '#default_value' => $pager_toggle,
    '#required' => FALSE,
    '#description' => t("Use a pager to select slides"),
  );

  // pager settings.
  // show fields when using pager
  $extra = (empty($pager_toggle)) ? ' style="display:none"' : '';
  $form['block_settings']['settings']['pager_settings'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#collapsed' => FALSE,
    '#prefix' => '<div id="ddblock-pager-settings-wrapper"'. $extra .'>',
    '#suffix' => '</div>',
    '#title' => t('Pager settings'),
  );

  if ($input_type == 'images') {
    $options = array(
      'none' => t('None'),
      'number-pager' => t('Number pager'),
      'image-pager' => t('Image pager'),
    );
  }
  else {
    $options = array(
      'none'            => t('None'),
      'number-pager' => t('Number Pager'),
    );
  }

  $form['block_settings']['settings']['pager_settings']['pager'] = array(
    '#type' => 'select',
    '#title' => t('Pager'),
    '#default_value' => $pager,
    '#options' => $options,
    '#required' => TRUE,
    '#description' => t("Add a pager to the block."),
  );

  $options = array(
    'click' => t('Click'),
    'mouseover' => t('Mouseover'),
  );

  $form['block_settings']['settings']['pager_settings']['pager_event'] = array(
    '#type' => 'select',
    '#title' => t('Pager event'),
    '#default_value' => $pager_event,
    '#options' => $options,
    '#required' => FALSE,
    '#description' => t("The event on which the pager reacts."),
  );

  $form['block_settings']['settings']['pager_settings']['pager_height'] = array(
    '#type' => 'textfield',
    '#title' => t('Height'),
    '#default_value' => $pager_height,
    '#required' => FALSE,
    '#description' => t("Height of the pager"),
  );

  $form['block_settings']['settings']['pager_settings']['pager_width'] = array(
    '#type' => 'textfield',
    '#title' => t('Width'),
    '#default_value' => $pager_width,
    '#required' => FALSE,
    '#description' => t("Width of the pager"),
  );
    $form['block_settings']['settings']['pager_settings']['pager_fast'] = array(
    '#type' => 'checkbox',
    '#title' => t('Fast Pager'),
    '#default_value' => $pager_fast,
    '#required' => FALSE,
    '#description' => t("Use fast pager event when clicked or hovered."),
  );

  $form['block_settings']['settings']['pager_settings']['pager_pause'] = array(
    '#type' => 'checkbox',
    '#title' => t('Pager pause'),
    '#default_value' => $pager_pause,
    '#required' => FALSE,
    '#description' => t("Pause the slideshow when pager hovered."),
  );

/*  $form['block_settings']['settings']['pager2'] = array(
    '#type' => 'checkbox',
    '#title' => t('Prev/Next Pager'),
    '#default_value' => $pager2,
    '#required' => FALSE,
    '#description' => t("Add a previous/next pager."),
  );

  // pager settings.
  // show fields when using pager
  $extra = (empty($pager2)) ? ' style="display:none"' : '';
  $form['block_settings']['settings']['pager2_settings'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#collapsed' => FALSE,
    '#prefix' => '<div id="ddblock-pager2-settings-wrapper"'. $extra .'>',
    '#suffix' => '</div>',
    '#title' => t('Prev/next pager settings'),
  );

  $options = array(
    'click' => t('Click'),
    'mouseover' => t('Mouseover'),
  );

  $form['block_settings']['settings']['pager2_settings']['pager2_event'] = array(
    '#type' => 'select',
    '#title' => t('Pager event'),
    '#default_value' => $pager2_event,
    '#options' => $options,
    '#required' => FALSE,
    '#description' => t("The event on which the prev/next pager reacts."),
  );

  $form['block_settings']['settings']['pager2_settings']['pager2_slide_prev'] = array(
    '#type' => 'textfield',
    '#title' => t('Prev text on slide'),
    '#default_value' => $pager2_slide_prev,
    '#size' => 30,
    '#required' => FALSE,
    '#description' => t("Caption for the prev pager on the slide.<br />Can also be empty if you use an image to go to the previous slide."),
  );

  $form['block_settings']['settings']['pager2_settings']['pager2_slide_next'] = array(
    '#type' => 'textfield',
    '#title' => t('Next text on slide'),
    '#default_value' => $pager2_slide_next,
    '#size' => 30,
    '#required' => FALSE,
    '#description' => t("Caption for the next pager on the slide.<br />Can also be empty if you use an image to go to the next slide."),
  );

  $form['block_settings']['settings']['pager2_settings']['pager2_pager_prev'] = array(
    '#type' => 'textfield',
    '#title' => t('Prev text in pager'),
    '#default_value' => $pager2_pager_prev,
    '#size' => 30,
    '#required' => FALSE,
    '#description' => t("Caption for the prev pager on the slide.<br />Can also be empty if you use an image to go to the previous slide."),
  );

  $form['block_settings']['settings']['pager2_settings']['pager2_pager_next'] = array(
    '#type' => 'textfield',
    '#title' => t('Next text in pager'),
    '#default_value' => $pager2_pager_next,
    '#size' => 30,
    '#required' => FALSE,
    '#description' => t("Caption for the next pager on the slide.<br />Can also be empty if you use an image to go to the next slide."),
  );
*/
      // pager settings togg;e
      $form['block_settings']['settings']['pager2'] = array(
        '#type' => 'checkbox',
        '#title' => t('Use Prev/Next Pager'),
        '#default_value' => $pager2,
        '#required' => FALSE,
        '#description' => t("Use a Prev/Next Pager to select slides"),
      );

      // pager2 settings.
      //show fields when using pager
      $extra = (empty($pager2)) ? ' style="display:none"' : '';
      $form['block_settings']['settings']['pager2_settings'] = array(
        '#type' => 'fieldset',
        '#collapsible' => TRUE,
        '#collapsed' => FALSE,
        '#prefix' => '<div id="ddblock-pager2-settings-wrapper"'. $extra .'>',
        '#suffix' => '</div>',
        '#title' => t('Prev/next pager settings'),
      );

      $form['block_settings']['settings']['pager2_settings']['pager2_event'] = array(
        '#type' => 'select',
        '#title' => t('Pager event'),
        '#default_value' => $pager2_event,
        '#prefix' => '<div id="ddblock-pager2-event-wrapper">',
        '#suffix' => '</div>',
        '#options' => $options,
        '#required' => FALSE,
        '#description' => t("The event on which the prev/next pager reacts."),
      );

      $options = array(
        'pager' => t('Pager'),
        'slide' => t('Slide'),
      );

      $form['block_settings']['settings']['pager2_settings']['pager2_position'] = array(
      '#type' => 'checkboxes',
      '#title' => t('Pager position'),
      '#default_value' => $pager2_position,
      '#prefix' => '<div id="ddblock-pager2-position-wrapper">',
      '#suffix' => '</div>',
      '#options' => $options,
      '#multiple' => TRUE,
      '#required' => FALSE,
      '#description' => t("Possible position for the prev/next pager.<br />The position must be supported by the template used to be effective."),
      );


      // pager2 settings pager.
      //show fields when using pager pager
      $extra = (empty($pager2)) ? ' style="display:none"' : '';
      $form['block_settings']['settings']['pager2_settings']['pager2_pager'] = array(
        '#type' => 'fieldset',
        '#collapsible' => TRUE,
        '#collapsed' => FALSE,
        '#prefix' => '<div id="ddblock-pager2-pager-settings-wrapper"'. $extra .'>',
        '#suffix' => '</div>',
        '#title' => t('Pager Pager'),
      );


      $form['block_settings']['settings']['pager2_settings']['pager2_pager']['pager2_pager_prev'] = array(
      '#type' => 'textfield',
      '#title' => t('Prev text in pager'),
      '#default_value' => $pager2_pager_prev,
      '#prefix' => '<div id="ddblock-pager2-pager-prev-text-wrapper">',
      '#size' => 30,
      '#suffix' => '</div>',
      '#required' => FALSE,
      '#description' => t("Caption for the prev pager in the pager.<br />Can also be empty if you use an image to go to the previous slide."),
      );

      $form['block_settings']['settings']['pager2_settings']['pager2_pager']['pager2_pager_next'] = array(
      '#type' => 'textfield',
      '#title' => t('Next text in pager'),
      '#default_value' => $pager2_pager_next,
      '#prefix' => '<div id="ddblock-pager2-pager-next-text-wrapper">',
      '#size' => 30,
      '#suffix' => '</div>',
      '#required' => FALSE,
      '#description' => t("Caption for the next pager in the pager.<br />Can also be empty if you use an image to go to the next slide."),
      );

      // hide prev/next pager when no prev/next slide available
      $form['block_settings']['settings']['pager2_settings']['pager2_pager']['pager2_pager_hide'] = array(
        '#type' => 'checkbox',
        '#title' => t('Prev/Next Hide'),
        '#default_value' => $pager2_pager_hide,
        '#required' => FALSE,
        '#description' => t("Hide Prev/Next Pager when no slide available."),
      );

      // pager2 settings slide.
      //show fields when using slide pager
      $extra = (empty($pager2)) ? ' style="display:none"' : '';
      $form['block_settings']['settings']['pager2_settings']['pager2_slide'] = array(
        '#type' => 'fieldset',
        '#collapsible' => TRUE,
        '#collapsed' => FALSE,
        '#prefix' => '<div id="ddblock-pager2-slide-settings-wrapper"'. $extra .'>',
        '#suffix' => '</div>',
        '#title' => t('Slide Pager'),
      );


      $options = array(
        'click' => t('Click'),
        'mouseover' => t('Mouseover'),
      );

      $form['block_settings']['settings']['pager2_settings']['pager2_slide']['pager2_slide_prev'] = array(
      '#type' => 'textfield',
      '#title' => t('Prev text on slide'),
      '#default_value' => $pager2_slide_prev,
      '#prefix' => '<div id="ddblock-pager2-slide-prev-text-wrapper">',
      '#size' => 30,
      '#suffix' => '</div>',
      '#required' => FALSE,
      '#description' => t("Caption for the prev pager on the slide.<br />Can also be empty if you use an image to go to the previous slide."),
      );

      $form['block_settings']['settings']['pager2_settings']['pager2_slide']['pager2_slide_next'] = array(
      '#type' => 'textfield',
      '#title' => t('Next text on slide'),
      '#default_value' => $pager2_slide_next,
      '#prefix' => '<div id="ddblock-pager2-slide-next-text-wrapper">',
      '#size' => 30,
      '#suffix' => '</div>',
      '#required' => FALSE,
      '#description' => t("Caption for the next pager on the slide.<br />Can also be empty if you use an image to go to the next slide."),
      );

      // hide prev/next pager when no prev/next slide available
      $form['block_settings']['settings']['pager2_settings']['pager2_slide']['pager2_slide_hide'] = array(
        '#type' => 'checkbox',
        '#title' => t('Prev/Next Hide'),
        '#default_value' => $pager2_slide_hide,
        '#required' => FALSE,
        '#description' => t("Hide Prev/Next Pager when no slide available."),
      );


  // collapsed or not collapsed depending on value for custom settings.
  if ($custom_jquery) {
    $collapsed = FALSE;
  }
  else {
    $collapsed = TRUE;
  }

  $form['block_settings']['settings']['custom'] = array(
    '#type' => 'fieldset',
    '#collapsible' => TRUE,
    '#collapsed' => $collapsed,
    '#title' => t('Custom jQuery Cycle Plugin Settings'),
    '#weight' => 1,
    '#description' => t('If you use custom jQuery options, they will override your other settings.'),
  );

  $form['block_settings']['settings']['custom']['custom_jquery'] = array(
    '#type' => 'textarea',
    '#title' => t('Custom Options'),
    '#default_value' => $custom_jquery,
    '#cols' => 60,
    '#rows' => 10,
    '#required' => FALSE,
    '#description' => t('Use valid JSON syntax, with double quotes for key/and string value pairs.<br />The total script needs to be enclosed in curly brackets.<br />No comma allowed after the last statement like in an array.<br />e.g.<br />{"fx":"fade",<br />"startingSlide":2,<br />"autostop":1}'),
  );

  $form['#redirect'] = 'admin/settings/ddblock/list';

  return $form;
}

/**
 * Build the node selection form element.
 *
 * This function is also called when generating a new set of options during the
 * AJAX callback, so an array is returned that can be used to replace an existing
 * form element.
 *
 * @param $form
 *   form to add elements to.
 * @param $content_type
 *   selected content type.
 * @param $nodes
 *   Existing nodes added to the block.
 *
 * @return
 *   form fields.
 */
function ddblock_select_nodes_form(&$form, $content_type, $nodes) {

  // Wrapper for nodes select box.
  $form['content']['content_types']['select_nodes'] = array(
    '#type' => 'hidden',
    '#value' => -1,
    '#prefix' => '<div id="select-nodes-wrapper">',
  );
  // no content type selected (show text 'No content type selected').
  if ($content_type == 'none') {
    $form['content']['content_types']['select_nodes']['#prefix'] .= '<em>'. t('No content type selected.') .'</em>';
    $form['content']['content_types']['select_nodes']['#suffix'] = '</div>';

    unset($form['content']['content_types']['nodes']);

  }
  // add select box to select a node.
  else {
    if (user_access('administer dynamic display blocks')) {

      // get all nodes of a content type which are not added yet to the block.
      $options = _ddblock_get_content_type_nodes($content_type);
      $form['content']['content_types']['nodes'] = array(
        '#type' => 'select',
        '#title' => t('Node'),
        '#default_value' => $nodes,
        '#description' => t('The node to show in the Dynamic display block'),
        '#options' => $options,
        '#attributes' => array('class' => 'content-type-select'),
        '#suffix' => '</div>',
      );
    }
  }

  return $form;
}

/**
 * Implementation of hook_form_alter().
 *
 * Used to add dynamic display block configuration settings to dynamic display block instances.
 */
function ddblock_form_alter(&$form, &$form_state, $form_id) {
  $module = arg(4);
  $delta = arg(5);

  if ((isset($delta) && ($module == 'ddblock'))
    && (user_access('administer dynamic display blocks'))
    && (user_access('administer blocks'))
    && ($form_id == 'block_admin_configure')) {

    // get original block_settings.
    $block = ddblock_get_blocks($delta);
    $module_original = $block->module;
    $delta_original = $block->delta_original;

    // check if module enabled in the dynamic display block settings.
    $block_enabled = FALSE;
    $blocks = ddblock_get_ddblock_enabled_module_blocks();
    foreach ($blocks as $block) {
      if (($block['module'] == $module_original) && ($block['delta'] == $delta_original)) {
        $block_enabled = TRUE;
      }
    }
    if ($block_enabled) {

      // get module path to dynamic display block module
      $ddblock_path = drupal_get_path('module', 'ddblock');
      // add ddblock js file
      drupal_add_js($ddblock_path .'/js/ddblock.admin.js', 'module');
      drupal_add_js($ddblock_path .'/js/jquery.selectboxes.js', 'module');

      // get settings.
      $configuration_settings = ddblock_get_configuration_settings($module, $delta);

      $advanced =_ddblock_get_variable($configuration_settings['advanced'], 1);
      $container = _ddblock_get_variable($configuration_settings['container'], 'div.slide');
      $custom_jquery = _ddblock_get_variable($configuration_settings['custom_jquery'], '');
      $debug_info = _ddblock_get_variable($configuration_settings['debug_info'], 'none');
      $fx = _ddblock_get_variable($configuration_settings['fx'], "fade");
      $height = _ddblock_get_variable($configuration_settings['height'], 195);
      $image_height = _ddblock_get_variable($configuration_settings['image_height'], 195);
      $image_width = _ddblock_get_variable($configuration_settings['image_width'], 195);
      $imgcache_toggle = _ddblock_get_variable($configuration_settings['imgcache_toggle'], 0);
      $imgcache_slide = _ddblock_get_variable($configuration_settings['imgcache_slide'], '<none>');
      $imgcache_pager_item = _ddblock_get_variable($configuration_settings['imgcache_pager_item'], '<none>');
      $next = _ddblock_get_variable($configuration_settings['next'], 0);
      $order = _ddblock_get_variable($configuration_settings['order'], 'asc');
      $output = _ddblock_get_variable($configuration_settings['output'], 'view_content');
      $overflow = _ddblock_get_variable($configuration_settings['overflow'], 1);
      $pager_toggle = _ddblock_get_variable($configuration_settings['pager_toggle'], 0);
      $pager = _ddblock_get_variable($configuration_settings['pager'], 'none');
      $pager_event = _ddblock_get_variable($configuration_settings['pager_event'], 'click');
      $pager2 = _ddblock_get_variable($configuration_settings['pager2'], 0);
      $pager2_event = _ddblock_get_variable($configuration_settings['pager2_event'], 'click');
      $pager2_position = _ddblock_get_variable($configuration_settings['pager2_position'], 'slide');
      $pager2_slide_prev = _ddblock_get_variable($configuration_settings['pager2_slide_prev'], '');
      $pager2_slide_next = _ddblock_get_variable($configuration_settings['pager2_slide_next'], '');
      $pager2_slide_hide = _ddblock_get_variable($configuration_settings['pager2_slide_hide'], 1);
      $pager2_pager_prev = _ddblock_get_variable($configuration_settings['pager2_pager_prev'], '');
      $pager2_pager_next = _ddblock_get_variable($configuration_settings['pager2_pager_next'], '');
      $pager2_pager_hide = _ddblock_get_variable($configuration_settings['pager2_pager_hide'], 1);
      $pager_fast = _ddblock_get_variable($configuration_settings['pager_fast'], 1);
      $pager_pause = _ddblock_get_variable($configuration_settings['pager_pause'], 1);
      if (($pager == 'number-pager') || ($pager2 == 1)) {
        $pager_height = _ddblock_get_variable($configuration_settings['pager_height'], 25);
        $pager_width = _ddblock_get_variable($configuration_settings['pager_width'], 195);
      }
      else {
        $pager_height = _ddblock_get_variable($configuration_settings['pager_height'], 63);
        $pager_width = _ddblock_get_variable($configuration_settings['pager_width'], 195);
      }
      $pager_container = _ddblock_get_variable($configuration_settings['pager_container'], '.custom-pager-item');
      $pager_position = _ddblock_get_variable($configuration_settings['pager_position'], 'top');
      $pause = _ddblock_get_variable($configuration_settings['pause'], 1);
      $slide_text = _ddblock_get_variable($configuration_settings['slide_text'], 1);
      $slide_text_jquery = _ddblock_get_variable($configuration_settings['slide_text_jquery'], 0);
      $slide_text_after_effect = _ddblock_get_variable($configuration_settings['slide_text_after_effect'], 'fadeIn');
      $slide_text_after_speed = _ddblock_get_variable($configuration_settings['slide_text_after_speed'], 1000);
      $slide_text_before_effect = _ddblock_get_variable($configuration_settings['slide_text_before_effect'], 'fadeOut');
      $slide_text_before_speed = _ddblock_get_variable($configuration_settings['slide_text_before_speed'], 250);
      $slide_text_container = _ddblock_get_variable($configuration_settings['slide_text_container'], 'div.slide-text');
      $slide_text_position =_ddblock_get_variable($configuration_settings['slide_text_position'], 'bottom');
      $speed = _ddblock_get_variable($configuration_settings['speed'], 500);
      $template = _ddblock_get_variable($configuration_settings['template'], 'none');
      if ($template == 'custom') {
        $custom_template = _ddblock_get_variable($configuration_settings['custom_template'], '');
      }
      $timeout = _ddblock_get_variable($configuration_settings['timeout'], 5000);
      $widget = _ddblock_get_variable($configuration_settings['widget'], 'default');
      $width = _ddblock_get_variable($configuration_settings['width'], 195);

      // set pager variable for javascript
        $settings['ddblockCustomTemplate'] = array(
        'pager' => $pager,
        'pagerPosition' => $pager_position,
      );

      drupal_add_js($settings, 'setting');

      // hide fields when using advanced settings
      $extra = (!empty($advanced)) ? ' style="display:none"' : '';

      $form['module'] = array(
        '#type' => 'hidden',
        '#value' => $module,
      );
      $form['delta'] = array(
        '#type' => 'value',
        '#value' => $delta,
      );
      $form['input_type'] = array(
        '#type' => 'hidden',
        '#value' => 'instance',
      );

      // widget setting: Enable the dynamic display block setting for this block.
      $options = array(
        'default' => t('Default'),
        'cycle' => t('Cycleblock'),
      );

      //wrapper for ddblock instance settings
      $form['block_settings']['#prefix'] = '<div id="ddblock-instance-settings">';
      $form['block_settings']['#suffix'] = '</div>';

      $form['block_settings']['widget'] = array(
        '#type' => 'radios',
        '#title' => t('Display Method'),
        '#default_value' => $widget,
        '#options' => $options,
        '#required' => TRUE,
        '#description' => t("Choose a way to display content."),
        '#weight' => -11,
      );

      // advanced settings togg;e
      $form['block_settings']['advanced'] = array(
        '#type' => 'checkbox'<