source: wpematico/tags/2.8.13/app/tools_tabs.php

<?php
// don't load directly 
if(!defined('ABSPATH')) {
        header('Status: 403 Forbidden');
        header('HTTP/1.1 403 Forbidden');
        exit();
}

/**
 * Retrieve Settings Tabs  
 * Default sections by tab below 
 * @since       1.2.4
 * @return      array
 */
function wpematico_get_tools_tabs() {
        $tabs                                    = array();
        $tabs['tools']           = __('Tools', 'wpematico');
        $tabs['debug_info']              = __('System Status', 'wpematico');
        $danger = WPeMatico::get_danger_options();

        if(!empty($danger['wpematico_debug_log_file'])) {
                $tabs['debug_log'] = __('Logs', 'wpematico');
        }

        return apply_filters('wpematico_tools_tabs', $tabs);
}


/**
 * Retrieve debug_info tools sections 
 * Use in same way to add sections to the different tabs "wpematico_get_'tab-key'_sections"
 * @since       2.3.9
 * @return      array with Settings tab sections
 */
//function wpematico_get_debug_log_sections() {
//      $danger = WPeMatico::get_danger_options();
//      $sections = array();
//
//      if(!empty($danger['wpematico_debug_log_file'])) {
//              $sections['debug_log_file']      = __('Debug Log File', 'wpematico');
//              $sections = apply_filters('wpematico_get_debug_sections', $sections);
//      }
//              
//      return $sections;
//
//}

function wpematico_get_debug_info_sections() {
        $sections = array();
        $sections['debug_file']  = __('Debug File', 'wpematico');
        $sections['danger_zone'] = __('Danger Zone', 'wpematico');
        $sections = apply_filters('wpematico_get_debug_sections', $sections);

        return $sections;
}

function wpematico_get_tools_sections() {
        $sections = array();
        $sections['tools']       = __('WPeMatico Tools', 'wpematico');
        $sections['feed_viewer'] = __('Feed Viewer', 'wpematico');
        $sections = apply_filters('wpematico_get_debug_sections', $sections);

        return $sections;
}

//Make Tabs calling actions and Sections if exist
function wpematico_tools_page() {
        global $pagenow, $wp_roles, $current_user;
        //$cfg = get_option(WPeMatico :: OPTION_KEY);
        $current_tab = (isset($_GET['tab']) ) ? sanitize_text_field( $_GET['tab'] ) : 'tools';
        $tabs            = wpematico_get_tools_tabs();
        $sections = array();
        $get_sections= "wpematico_get_".$current_tab."_sections";
        if(function_exists($get_sections)) {
                //$sections = $get_sections();
                add_action('wpematico_tools_tab_'.$current_tab, 'wpematico_print_tab_sections',0,1);

        }
        
        ?>
        <div class="wrap">
                <h2 class="nav-tab-wrapper">
                        <?php
                        foreach($tabs as $tab_id => $tab_name) {
                                $tab_url = add_query_arg(array(
                                        'tab' => $tab_id
                                ));

                                $tab_url = remove_query_arg(array(
                                        'section'
                                        ), $tab_url);

                                $active = $current_tab == $tab_id ? ' nav-tab-active' : '';
                                echo '<a href="' . esc_url($tab_url) . '" title="' . esc_attr(sanitize_text_field($tab_name)) . '" class="nav-tab' . $active . '">' . ( $tab_name ) . '</a>';
                        }
                        ?>
                </h2>
                <div class="metabox-holder">
                        <?php
                        do_action('wpematico_tools_tab_' . $current_tab);
                        ?>
                </div><!-- .metabox-holder -->
        </div><!-- .wrap -->
        <?php
}


function wpematico_print_tab_sections() {
        global $pagenow, $wp_roles, $current_user;
        $current_tab = (isset($_GET['tab']) ) ? sanitize_text_field( $_GET['tab'] ) : 'tools';
        $sections = array();
        $get_sections= "wpematico_get_".$current_tab."_sections";
        if(function_exists($get_sections)) {
                $sections = $get_sections();
        }
        $current_section = (isset($_GET['section']) ) ? sanitize_text_field( $_GET['section'] ) : key($sections);
        ?>      
        <div class="wpe_wrap">
                <h3 class="nav-section-wrapper">
                        <?php
                        $f = TRUE;
                        foreach($sections as $section_id => $section_name) {
                                $section_url = add_query_arg(array(
                                        'section' => $section_id
                                ));
                                if(!$f)
                                        echo " | ";
                                else
                                        $f               = FALSE;
                                $active  = $current_section == $section_id ? ' nav-section-active' : '';
                                echo '<a href="' . esc_url($section_url) . '" title="' . esc_attr($section_name) . '" class="nav-section' . $active . '">' . ( $section_name ) . '</a>';
                        }
                        ?>
                </h3>
                <div class="metabox-holder">
                        <?php
                        do_action('wpematico_tools_section_' . $current_section);
                        ?>
                </div><!-- .metabox-holder -->
        </div><!-- .wrap -->
        <?php
}