custom_main_menu.module

<?php


/**
* Implementation of hook_menu().
*/
function custom_main_menu_menu() {
  // Admin settings.
  $items['admin/config/development/custom_main_menu'] = array(
    'title' => 'Configuración Menú Principal',
    'description' => 'Opciones de configuración para el menú principal',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('custom_main_menu_admin'),
    'access arguments' => array('administer site configuration'),
  );
  return $items;
}

/**
 * Callback function for admin setting.
 */
function custom_main_menu_admin() {
  // This module will not work if used in overlay paths such as 
  // admin/* , node/add etc if user has overlay access.
  $form['custom_main_menu_menu'] = array(
    '#type' => 'select',
    '#title' => t('Menú'),
    '#options' => menu_get_menus(),
    '#default_value' => variable_get('custom_main_menu_menu', 'main-menu'),
    '#description' => t('Ingrese el menú a mostrar.'),
  );

  return system_settings_form($form);
}

/**
 * Implements hook_block_info().
 *
 * This hook declares what blocks are provided by the module.
 */
function custom_main_menu_block_info() {
  $blocks['custom_main_menu_menu'] = array(
    // info: The name of the block.
    'info' => t('Bloque del menu principal custom'),
    // Block caching options (per role, per user, etc.)
    'cache' => DRUPAL_CACHE_PER_ROLE, // default
  );
  return $blocks;
}

/**
 * Implements hook_block_view().
 *
 * This hook generates the contents of the blocks themselves.
 */
function custom_main_menu_block_view($delta = '') {
  //The $delta parameter tells us which block is being requested.
  $block = array();  
  switch ($delta) {
    case 'custom_main_menu_menu':
      $block['subject'] = t('Menú principal personalizado');
      $block['content'] = array('#markup' => custom_main_menu_content());
      // Add contextual links for this block.
      if (!empty($block['content'])) {
        $block['content']['#contextual_links']['menu'] = array('admin/structure/menu/manage', array(variable_get('custom_main_menu_menu', 'main-menu')));
      }
    break;
  }
  return $block;
}

// Crea el contenido del menu

function custom_main_menu_content() {
  $render_html = '<ul id="menu-top" class="nav navbar-nav navbar-left">';
  $menu = variable_get('custom_main_menu_menu', 'main-menu'); // your menu name
//  $menu = "book-toc-1";
  $parameters = array(
    'min_depth' => 1,
    'max_depth' => 1,
  );
  $menuItems = menu_build_tree($menu, $parameters);
  $i=0;
  foreach($menuItems as $m) {
   if($m['link']['hidden'] == 0) {
    if(!$m['link']['hidden']) {
      if($m['link']['has_children']) {
        $render_html .= theme('custom_main_menu_dropdown', array(
          'title' => $m['link']['title'], 
          'link' => $m['link']['href'], 
          'content' => custom_main_menu_content_submenus($menu, $m['link']['mlid'], $i), 
          'mlid' => $m['link']['mlid']
        ));
        $i++;
      }
      else {
        $render_html .= '<li id="menu-' . $m['link']['mlid'] . '" >' . l($m['link']['title'], $m['link']['href']) . '</li>';
      }
    }
  }
  }
  return $render_html . '</ul>';
}

function custom_main_menu_content_submenus($menu, $plid, $i) {
  $render_html = "";
  $parameters = array(
    'active_trail' => array($plid),
    'only_active_trail' => FALSE,
    'min_depth' => 2,
    'max_depth' => 2,
    'conditions' => array('plid' => $plid),
  );
  $menuItems = menu_build_tree($menu, $parameters);
  //dpm($menuItems);
  $j = 0;
  foreach($menuItems as $m) {
//    dpm($m);
  if($m['link']['hidden'] == 0) {
    if($m['link']['has_children']) {
      $render_html .= '<div class="mainmenu-links bigger-last"><h3>' . l($m['link']['title'], $m['link']['href'],array('attributes' => array('id'=>array("menu-custom-$i".$j)))) . '</h3>';
      $parameters = array(
        'active_trail' => array($m['link']['mlid']),
        'only_active_trail' => FALSE,
        'min_depth' => 3,
        'max_depth' => 3,
        'conditions' => array('plid' => $m['link']['mlid']),
      );
      $menuSubItems = menu_build_tree($menu, $parameters);
      $menu_item = menu_tree_output($menuSubItems);
      $render_html .= render($menu_item) . '</div>';
      $j++;
    }
    else {
      $render_html .= '<span class="mainmenu-nolink bigger-last">' . l($m['link']['title'], $m['link']['href']) . '</span>';
    }
  }

}
  //  $content .= block_get_blocks_by_region('menu_'. $pos);
  return $render_html;
}
/**
* Implements hook_theme().
*/
function custom_main_menu_theme() {
  return array(
    'custom_main_menu_dropdown' => array(
      'template' => 'custom_main_menu_dropdown',
      'variables' => array(
        'title' => "",
        'content' => "",
        'link' => NULL,
        'mlid' => NULL,
      ),
    ),
  );
}