machete_admin.php

<?php
if ( ! defined( 'MACHETE_ADMIN_INIT' ) ) exit;

function machete_do_activation_redirect() {
  // Bail if no activation redirect
    if ( ! get_transient( '_machete_welcome_redirect' ) ) {
    return;
  }
  // Delete the redirect transient
  delete_transient( '_machete_welcome_redirect' );

  // Bail if activating from network, or bulk
  if ( is_network_admin() || isset( $_GET['activate-multi'] ) ) {
    return;
  }
  // Redirect to about page
  wp_safe_redirect( add_query_arg( array( 'page' => 'machete' ), admin_url( 'admin.php' ) ) );
}
add_action( 'admin_init', 'machete_do_activation_redirect' );


function machete_filter_plugin_action_links( $plugin_actions, $plugin_file ) {

  $new_actions = array();

  if ( basename( dirname( __FILE__ ) ) . '/machete.php' === $plugin_file ) {
    $new_actions['sc_settings'] = sprintf( __( '<a href="%s">Settings</a>', 'machete' ), esc_url( admin_url( 'admin.php?page=machete' ) ) );
  }
  return array_merge( $new_actions, $plugin_actions );
}
add_filter( 'plugin_action_links', 'machete_filter_plugin_action_links', 10, 2 );


function machete_remove_help_tabs() {
  $screen = get_current_screen();
  if (strpos($screen->id, 'machete') === false) return;
    $screen->remove_help_tabs();
}
add_action('admin_head', 'machete_remove_help_tabs' );



function machete_enqueue_custom_admin_style() {
        wp_register_style( 'custom_wp_admin_css', plugin_dir_url( __FILE__ ) . 'css/admin.css', false, '1.0.0' );
        wp_enqueue_style( 'custom_wp_admin_css' );
}
add_action( 'admin_enqueue_scripts', 'machete_enqueue_custom_admin_style' );



function machete_pages() {

	if ( !current_user_can( 'manage_options' ) )  {
		wp_die( __( 'You do not have sufficient permissions to access this page.' ) );
	}

  add_menu_page(
  	'Machete',
  	'Machete',
  	'manage_options',
  	'machete',
  	'machete_about_page_content',
  	plugin_dir_url( __FILE__ ) . 'img/machete.svg'
  	);

  add_submenu_page(
  	'machete',
    __('Header Cleanup','machete'),
    __('Header Cleanup','machete'),
    'manage_options',
    'machete-cleanup',
    'machete_cleanup_page_content'
  );

  add_submenu_page(
  	'machete',
  	__('Cookie Law Warning','machete'),
    __('Cookie Law','machete'),
    'manage_options',
    'machete-cookies',
    'machete_cookies_page_content'
  );

  add_submenu_page(
  	'machete',
  	__('Analytics and Custom Code','machete'),
    __('Analytics & Code','machete'),
    'manage_options',
    'machete-utils',
    'machete_utils_page_content'
  );

  add_submenu_page(
    'machete',
    __('Coming Soon & Maintenance Mode','machete'),
    __('Maintenance Mode','machete'),
    'manage_options',
    'machete-maintenance',
    'machete_maintenance_page_content'
  );
}
add_action('admin_menu', 'machete_pages');


function machete_admin_tabs($current = '') {
	$tabs = array(
		'machete-cleanup' => __('Cleanup','machete'),
		'machete-cookies' => __('Cookie Law','machete'),
		'machete-utils' => __('Analytics & Code','machete'),
		'machete-maintenance' => __('Maintenance Mode','machete'),
    'machete' => __('About Machete','machete')
		);

	echo '<h2 class="nav-tab-wrapper">';
	foreach($tabs as $slug => $title) {
		if ($slug == $current){
			echo '<a href="#" class="nav-tab-active nav-tab">'.$title.'</a>';
		}else{
			echo '<a href="'.admin_url('admin.php?page='.$slug).'" class=" nav-tab">'.$title.'</a>';
		}
	}
	echo '</h2>';
}


function machete_save_success() {
	?>
    <div class="notice notice-success is-dismissible">
        <p><?php _e( 'Options saved!', 'machete' ); ?></p>
    </div>
    <?php
}



//update_option( $option, $new_value, $autoload );
if (isset($_POST['machete-cleanup-saved'])){

  check_admin_referer( 'machete_save_cleanup' );
	require('inc/admin_cleanup_functions.php');
	
	if(machete_cleanup_save_options()){
		add_action( 'admin_notices', 'machete_save_success' );
	}
}

function machete_cleanup_page_content() {
	require('inc/admin_cleanup_content.php');
}

/* Machete Cookies Bar */
if (isset($_POST['machete-cookies-saved'])){

  check_admin_referer( 'machete_save_cookies' );
	require('inc/admin_cookies_functions.php');
	
	if(machete_cookies_save_options()){
		add_action( 'admin_notices', 'machete_save_success' );
	}
}
function machete_cookies_page_content() {
	require('inc/admin_cookies_content.php');
}

/* Machete Utils */
if (isset($_POST['machete-utils-saved'])){

  check_admin_referer( 'machete_save_utils' );
	require('inc/admin_utils_functions.php');
	
	if(machete_utils_save_options()){
		add_action( 'admin_notices', 'machete_save_success' );
	}
}
function machete_utils_page_content() {
	require('inc/admin_utils_content.php');
}


/* Machete Maintenance */
function machete_maintenance_page_content() {
  require('inc/admin_maintenance_content.php');
}


/* Machete About */
function machete_about_page_content() {
	require('inc/admin_about_content.php');
}


// Machete cleanup actions specific to the back-end
if(
  ($machete_cleanup_settings = get_option('machete_cleanup_settings')) &&
  (count($machete_cleanup_settings) > 0)){

  if (in_array('emojicons',$machete_cleanup_settings)) {
    remove_action( 'admin_print_styles', 'print_emoji_styles' );
    //remove_action( 'wp_head', 'print_emoji_detection_script', 7 );
    remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );
    //remove_action( 'wp_print_styles', 'print_emoji_styles' );
    remove_filter( 'wp_mail', 'wp_staticize_emoji_for_email' );
    //remove_filter( 'the_content_feed', 'wp_staticize_emoji' );
    //remove_filter( 'comment_text_rss', 'wp_staticize_emoji' );
    add_filter( 'tiny_mce_plugins', 'machete_disable_emojicons_tinymce' );

  }
}

if ( ! function_exists( 'machete_disable_emojicons_tinymce' ) ) :
function machete_disable_emojicons_tinymce( $plugins ) {
  if ( is_array( $plugins ) ) {
    return array_diff( $plugins, array( 'wpemoji' ) );
  }
  return array();
}
endif;