/**
  * Save hook, create the link
  *
  * @param int    $post_id
  * @param object $post
  *
  * @access public
  * @return void
  */
 public function save($post_id, $post)
 {
     // Check nonce
     if (!isset($_POST['sp_meta_nonce']) || !wp_verify_nonce($_POST['sp_meta_nonce'], plugin_basename(__FILE__))) {
         return;
     }
     // Check if user is allowed to do this
     if (!current_user_can(SP_Cap_Manager::get_capability($post_id))) {
         return;
     }
     // Verify post is not a revision
     if (wp_is_post_revision($post_id)) {
         return $post_id;
     }
     // Check autosave
     if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
         return $post_id;
     }
     // Check meta settings
     if (!isset($_POST['sp_meta'])) {
         return;
     }
     // Check post exists
     if ($post == null) {
         return;
     }
     // Check if it's a publish
     if ($post->post_status != 'publish') {
         return;
     }
     // Check if allowed
     $this->check_if_allowed($_POST['sp_pt_link']);
     // Get parent id
     $parent = SP_Parent_Param::get_current_parent($_POST['sp_parent']);
     // Check if post type equals the child or parent post type
     if ('1' == $parent[2]) {
         if ($post->post_type != $this->ptl->get_parent()) {
             return;
         }
     } else {
         if ($post->post_type != $this->ptl->get_child()) {
             return;
         }
     }
     // Create link if it's a new post
     if (isset($_POST['sp_new'])) {
         // Unhook the save hook to avoid an infinite loop
         remove_action('save_post', array($this, 'save'), 99);
         // Create link
         $post_link_manager = new SP_Post_Link_Manager();
         // Check which way to link
         if ('1' == $parent[2]) {
             // Create a backwards link
             $post_link_manager->add($_POST['sp_pt_link'], $post_id, $parent[0]);
         } else {
             // Create a 'normal' link
             $post_link_manager->add($_POST['sp_pt_link'], $parent[0], $post_id);
         }
         // Re-hook hook
         add_action('save_post', array($this, 'save'), 99);
     }
     // Send back
     $redirect_url = get_admin_url() . "post.php?post={$parent[0]}&action=edit";
     // Check if parent as a ptl
     if (isset($parent[1]) && $parent[1] != '') {
         $redirect_url .= '&sp_pt_link=' . $parent[1];
     }
     // Check if there are any parents left
     $sp_parent_rest = SP_Parent_Param::strip_sp_parent_parent($_POST['sp_parent']);
     if ($sp_parent_rest != '') {
         $redirect_url .= '&sp_parent=' . $sp_parent_rest;
     }
     // Redirecting user
     wp_redirect($redirect_url);
     exit;
 }
    /**
     * The screen content
     */
    public function link_post_screen_content()
    {
        // Get the connection
        $ptl_manager = new SP_Connection_Manager();
        $connection = $ptl_manager->get_link($_GET['sp_pt_link']);
        // Parent
        $parent = SP_Parent_Param::get_current_parent($_GET['sp_parent']);
        // Get child post type
        if ('1' == $parent[2]) {
            $post_type = get_post_type_object($connection->get_parent());
        } else {
            $post_type = get_post_type_object($connection->get_child());
        }
        // Setup cancel URL
        $cancel_url = get_admin_url() . "post.php?post={$parent[0]}&action=edit";
        // Check if parent as a ptl
        if (isset($parent[1]) && $parent[1] != '') {
            $cancel_url .= '&sp_pt_link=' . $parent[1];
        }
        // Check if there are any parents left
        $sp_parent_rest = SP_Parent_Param::strip_sp_parent_parent($_GET['sp_parent']);
        if ($sp_parent_rest != '') {
            $cancel_url .= '&sp_parent=' . $sp_parent_rest;
        }
        // Catch search string
        $search = null;
        if (isset($_POST['s']) && $_POST['s'] != '') {
            $search = $_POST['s'];
        }
        ?>
		<div class="wrap">
			<h2>
				<?php 
        echo $post_type->labels->name;
        ?>
				<a href="<?php 
        echo $cancel_url;
        ?>
" class="add-new-h2"><?php 
        _e('Cancel linking', 'post-connector');
        ?>
</a>
			</h2>

			<form id="sp-list-table-form" method="post">
				<input type="hidden" name="page" value="<?php 
        echo $_REQUEST['page'];
        ?>
" />
				<?php 
        // Create the link table
        $list_table = new SP_Create_Link_List_Table($post_type->name, $connection);
        // Set the search
        $list_table->set_search($search);
        // Load the items
        $list_table->prepare_items();
        // Add the search box
        $list_table->search_box(__('Search', 'post-connector'), 'sp-search');
        // Display the table
        $list_table->display();
        ?>
			</form>
		</div>

	<?php 
    }
 /**
  * Metabox content
  *
  * @access public
  * @return void
  */
 public function callback($post)
 {
     echo "<div class='sp_mb_manage'>\n";
     // Add nonce
     echo "<input type='hidden' name='sp-ajax-nonce' id='sp-ajax-nonce' value='" . wp_create_nonce('post-connector-ajax-nonce-omgrandomword') . "' />\n";
     // Output plugin URL in hidden val
     echo "<input type='hidden' name='sp-dir-img' id='sp-dir-img' value='" . plugins_url('/core/assets/images/', Post_Connector::get_plugin_file()) . "' />\n";
     // Setup vars
     $sp_parent = isset($_GET['sp_parent']) ? $_GET['sp_parent'] : '';
     $sp_pt_link = isset($_GET['sp_pt_link']) ? $_GET['sp_pt_link'] : '';
     // Create a Post Link Manager object
     $post_link_manager = new SP_Post_Link_Manager();
     // Get the children
     $children = $post_link_manager->get_children($this->connection->get_slug(), $post->ID);
     $child_post_type = get_post_type_object($this->connection->get_child());
     echo "<div class='pt_button_holder'>\n";
     // Check if user is allowed to add new children
     if ($this->connection->get_add_new() == '1') {
         // Build the Post Connector link existing post URL
         $url = get_admin_url() . "post-new.php?post_type=" . $this->connection->get_child() . "&amp;sp_parent=" . SP_Parent_Param::generate_sp_parent_param($post->ID, $sp_pt_link, $sp_parent, 0) . "&amp;sp_pt_link=" . $this->connection->get_id();
         // WPML check
         if (isset($_GET['lang'])) {
             $url .= "&lang=" . $_GET['lang'];
         }
         echo "<span id='view-post-btn'>";
         echo "<a href='" . $url . "' class='button'>";
         printf(__('Add new %s', 'post-connector'), $child_post_type->labels->singular_name);
         echo "</a>";
         echo "</span>\n";
     }
     // Check if user is allowed to add existing children
     if ($this->connection->get_add_existing() == '1') {
         // Build the Post Connector link existing post URL
         $url = get_admin_url() . "admin.php?page=link_post_screen&amp;sp_parent=" . SP_Parent_Param::generate_sp_parent_param($post->ID, $sp_pt_link, $sp_parent, 0) . "&amp;sp_pt_link=" . $this->connection->get_id();
         // WPML check
         if (isset($_GET['lang'])) {
             $url .= "&amp;lang=" . $_GET['lang'];
         }
         /**
          * Action: 'pc_meta_box_manage_add_existing_url' - Allow adjusting of 'add existing' URL
          *
          * @api string $url The URL
          * @param SP_Connection $connection The connection
          */
         $url = apply_filters('pc_meta_box_manage_add_existing_url', $url, $this->connection);
         echo "<span id='view-post-btn'>";
         echo "<a href='" . $url . "' class='button'>";
         printf(__('Add existing %s', 'post-connector'), $child_post_type->labels->singular_name);
         echo "</a>";
         echo "</span>\n";
     }
     echo "</div>\n";
     if (count($children) > 0) {
         $table_classes = 'wp-list-table widefat fixed pages pt_table_manage';
         /**
          * Action: 'pc_meta_box_manage_table_classes' - Allow adjusting meta box manage table classes
          *
          * @api string $table_classes The table classes
          * @param SP_Connection $connection The connection
          */
         $table_classes = apply_filters('pc_meta_box_manage_table_classes', $table_classes, $this->connection);
         // Managet table
         echo "<table class='" . $table_classes . "'>\n";
         echo "<tbody>\n";
         $i = 0;
         foreach ($children as $link_id => $child) {
             $child_id = $child->ID;
             $edit_url = get_admin_url() . "post.php?post={$child_id}&amp;action=edit&amp;sp_parent=" . SP_Parent_Param::generate_sp_parent_param($post->ID, $sp_pt_link, $sp_parent, 0) . "&sp_pt_link=" . $this->connection->get_id();
             echo "<tr id='{$link_id}'>\n";
             echo "<td>";
             echo "<strong><a href='{$edit_url}' class='row-title' title='{$child->post_title}'>{$child->post_title}</a></strong>\n";
             echo "<div class='row-actions'>\n";
             echo "<span class='edit'><a href='{$edit_url}' title='" . __('Edit this item', 'post-connector') . "'>";
             _e('Edit', 'post-connector');
             echo "</a> | </span>";
             echo "<span class='trash'><a class='submitdelete' title='" . __('Delete this item', 'post-connector') . "' href='javascript:;'>";
             _e('Delete', 'post-connector');
             echo "</a></span>";
             echo "</div>\n";
             echo "</td>\n";
             echo "</tr>\n";
             $i++;
         }
         echo "</tbody>\n";
         echo "</table>\n";
     } else {
         echo '<br/>';
         printf(__('No %s found.', 'post-connector'), $child_post_type->labels->name);
     }
     // Reset Post Data
     wp_reset_postdata();
     echo "</div>\n";
 }