functions.php

<?php
/*
 *  Author: Todd Motto | @toddmotto
 *  URL: html5blank.com | @html5blank
 *  Custom functions, support, custom post types and more.
 */

/*------------------------------------*\
	External Modules/Files
\*------------------------------------*/
require_once('inc/global/helpers.php');

// Get mobile detect script
require_once('inc/global/Mobile_Detect.php');
// Load detect into a variable for use
$detect = new Mobile_Detect;
    /* Use it like this:
        // Basic detection.
        $detect->isMobile();
        $detect->isTablet();

        // Magic methods.
        $detect->isIphone();
        $detect->isSamsung();
        // [...]

        // Alternative to magic methods.
        $detect->is('iphone');

        // Find the version of component.
        $detect->version('Android');

        // Additional match method.
        $detect->match('regex.*here');

        // Browser grade method.
        $detect->mobileGrade();

        // Batch methods.
        $detect->setUserAgent($userAgent);
        $detect->setHttpHeaders($httpHeaders);

        // Check for mobile environment.
        if ($detect->isMobile()) {
            // Your code here.
        }
    */

// Get custom post types
require_once('inc/global/custom-post-types.php');

// Get mailer   
require_once('inc/global/mailer.php');

/*------------------------------------*\
	Theme Support
\*------------------------------------*/

if (!isset($content_width))
{
    $content_width = 1080;
}

if (function_exists('add_theme_support'))
{
    // Add Menu Support
    add_theme_support('menus');

    // Add Thumbnail Theme Support
    add_theme_support('post-thumbnails');
    add_image_size('large', 700, '', true); // Large Thumbnail
    add_image_size('medium', 250, '', true); // Medium Thumbnail
    add_image_size('small', 120, '', true); // Small Thumbnail
    add_image_size('custom-size', 700, 200, true); // Custom Thumbnail Size call using the_post_thumbnail('custom-size');

    // Add Support for Custom Backgrounds - Uncomment below if you're going to use
    /*add_theme_support('custom-background', array(
	'default-color' => 'FFF',
	'default-image' => get_template_directory_uri() . '/img/bg.jpg'
    ));*/

    // Add Support for Custom Header - Uncomment below if you're going to use
    /*add_theme_support('custom-header', array(
	'default-image'			=> get_template_directory_uri() . '/img/headers/default.jpg',
	'header-text'			=> false,
	'default-text-color'		=> '000',
	'width'				=> 1000,
	'height'			=> 198,
	'random-default'		=> false,
	'wp-head-callback'		=> $wphead_cb,
	'admin-head-callback'		=> $adminhead_cb,
	'admin-preview-callback'	=> $adminpreview_cb
    ));*/

    // Enables post and comment RSS feed links to head
    add_theme_support('automatic-feed-links');

    // Localisation Support
    load_theme_textdomain('html5blank', get_template_directory() . '/languages');
}

/*------------------------------------*\
	Functions
\*------------------------------------*/

// HTML5 Blank navigation
function html5blank_nav()
{
	wp_nav_menu(
	array(
		'theme_location'  => 'header-menu',
		'menu'            => '',
		'container'       => 'div',
		'container_class' => 'menu-{menu slug}-container',
		'container_id'    => '',
		'menu_class'      => 'menu',
		'menu_id'         => '',
		'echo'            => true,
		'fallback_cb'     => 'wp_page_menu',
		'before'          => '',
		'after'           => '',
		'link_before'     => '',
		'link_after'      => '',
		'items_wrap'      => '<ul>%3$s</ul>',
		'depth'           => 0,
		'walker'          => ''
		)
	);
}

// Register HTML5 Blank Navigation
function register_html5_menu()
{
    register_nav_menus(array( // Using array to specify more menus if needed
        'header-menu' => __('Header Menu', 'html5blank'), // Main Navigation
        'sidebar-menu' => __('Sidebar Menu', 'html5blank'), // Sidebar Navigation
        'extra-menu' => __('Extra Menu', 'html5blank') // Extra Navigation if needed (duplicate as many as you need!)
    ));
}

// Remove the <div> surrounding the dynamic navigation to cleanup markup
function my_wp_nav_menu_args($args = '')
{
    $args['container'] = false;
    return $args;
}

// Remove Injected classes, ID's and Page ID's from Navigation <li> items
function my_css_attributes_filter($var)
{
    return is_array($var) ? array() : '';
}

// Remove invalid rel attribute values in the categorylist
function remove_category_rel_from_category_list($thelist)
{
    return str_replace('rel="category tag"', 'rel="tag"', $thelist);
}

// Add page slug to body class, love this - Credit: Starkers Wordpress Theme
function add_slug_to_body_class($classes)
{
    global $post;
    if (is_home()) {
        $key = array_search('blog', $classes);
        if ($key > -1) {
            unset($classes[$key]);
        }
    } elseif (is_page()) {
        $classes[] = sanitize_html_class($post->post_name);
    } elseif (is_singular()) {
        $classes[] = sanitize_html_class($post->post_name);
    }

    return $classes;
}

// If Dynamic Sidebar Exists
if (function_exists('register_sidebar'))
{
    // Define Sidebar Widget Area 1
    register_sidebar(array(
        'name' => __('Widget Area 1', 'html5blank'),
        'description' => __('Description for this widget-area...', 'html5blank'),
        'id' => 'widget-area-1',
        'before_widget' => '<div id="%1$s" class="%2$s">',
        'after_widget' => '</div>',
        'before_title' => '<h3>',
        'after_title' => '</h3>'
    ));

    // Define Sidebar Widget Area 2
    register_sidebar(array(
        'name' => __('Widget Area 2', 'html5blank'),
        'description' => __('Description for this widget-area...', 'html5blank'),
        'id' => 'widget-area-2',
        'before_widget' => '<div id="%1$s" class="%2$s">',
        'after_widget' => '</div>',
        'before_title' => '<h3>',
        'after_title' => '</h3>'
    ));
}

// Remove wp_head() injected Recent Comment styles
function my_remove_recent_comments_style()
{
    global $wp_widget_factory;
    remove_action('wp_head', array(
        $wp_widget_factory->widgets['WP_Widget_Recent_Comments'],
        'recent_comments_style'
    ));
}

// Pagination for paged posts, Page 1, Page 2, Page 3, with Next and Previous Links, No plugin
function html5wp_pagination()
{
    global $wp_query;
    $big = 999999999;
    echo paginate_links(array(
        'base' => str_replace($big, '%#%', get_pagenum_link($big)),
        'format' => '?paged=%#%',
        'current' => max(1, get_query_var('paged')),
        'total' => $wp_query->max_num_pages
    ));
}

// Custom Excerpts
function html5wp_index($length) // Create 20 Word Callback for Index page Excerpts, call using html5wp_excerpt('html5wp_index');
{
    return 20;
}

// Create 40 Word Callback for Custom Post Excerpts, call using html5wp_excerpt('html5wp_custom_post');
function html5wp_custom_post($length)
{
    return 40;
}

// Create the Custom Excerpts callback
function html5wp_excerpt($length_callback = '', $more_callback = '')
{
    global $post;
    if (function_exists($length_callback)) {
        add_filter('excerpt_length', $length_callback);
    }
    if (function_exists($more_callback)) {
        add_filter('excerpt_more', $more_callback);
    }
    $output = get_the_excerpt();
    $output = apply_filters('wptexturize', $output);
    $output = apply_filters('convert_chars', $output);
    $output = '<p>' . $output . '</p>';
    echo $output;
}

// Custom View Article link to Post
function html5_blank_view_article($more)
{
    global $post;
    return '... <a class="view-article" href="' . get_permalink($post->ID) . '">' . __('View Article', 'html5blank') . '</a>';
}

// Remove Admin bar
function remove_admin_bar()
{
    return false;
}

// Remove 'text/css' from our enqueued stylesheet
function html5_style_remove($tag)
{
    return preg_replace('~\s+type=["\'][^"\']++["\']~', '', $tag);
}

// Remove thumbnail width and height dimensions that prevent fluid images in the_thumbnail
function remove_thumbnail_dimensions( $html )
{
    $html = preg_replace('/(width|height)=\"\d*\"\s/', "", $html);
    return $html;
}

// Custom Gravatar in Settings > Discussion
function html5blankgravatar ($avatar_defaults)
{
    $myavatar = get_template_directory_uri() . '/img/gravatar.jpg';
    $avatar_defaults[$myavatar] = "Custom Gravatar";
    return $avatar_defaults;
}

// Threaded Comments
function enable_threaded_comments()
{
    if (!is_admin()) {
        if (is_singular() AND comments_open() AND (get_option('thread_comments') == 1)) {
            wp_enqueue_script('comment-reply');
        }
    }
}

// Custom Comments Callback
function html5blankcomments($comment, $args, $depth)
{
	$GLOBALS['comment'] = $comment;
	extract($args, EXTR_SKIP);

	if ( 'div' == $args['style'] ) {
		$tag = 'div';
		$add_below = 'comment';
	} else {
		$tag = 'li';
		$add_below = 'div-comment';
	}
?>
    <!-- heads up: starting < for the html tag (li or div) in the next line: -->
    <<?php echo $tag ?> <?php comment_class(empty( $args['has_children'] ) ? '' : 'parent') ?> id="comment-<?php comment_ID() ?>">
	<?php if ( 'div' != $args['style'] ) : ?>
	<div id="div-comment-<?php comment_ID() ?>" class="comment-body">
	<?php endif; ?>
	<div class="comment-author vcard">
	<?php if ($args['avatar_size'] != 0) echo get_avatar( $comment, $args['180'] ); ?>
	<?php printf(__('<cite class="fn">%s</cite> <span class="says">says:</span>'), get_comment_author_link()) ?>
	</div>
<?php if ($comment->comment_approved == '0') : ?>
	<em class="comment-awaiting-moderation"><?php _e('Your comment is awaiting moderation.') ?></em>
	<br />
<?php endif; ?>

	<div class="comment-meta commentmetadata"><a href="<?php echo htmlspecialchars( get_comment_link( $comment->comment_ID ) ) ?>">
		<?php
			printf( __('%1$s at %2$s'), get_comment_date(),  get_comment_time()) ?></a><?php edit_comment_link(__('(Edit)'),'  ','' );
		?>
	</div>

	<?php comment_text() ?>

	<div class="reply">
	<?php comment_reply_link(array_merge( $args, array('add_below' => $add_below, 'depth' => $depth, 'max_depth' => $args['max_depth']))) ?>
	</div>
	<?php if ( 'div' != $args['style'] ) : ?>
	</div>
	<?php endif; ?>
<?php }

/*------------------------------------*\
	Actions + Filters + ShortCodes
\*------------------------------------*/

// Add Actions
// add_action('init', 'html5blank_header_scripts'); // Add Custom Scripts to wp_head
// add_action('wp_print_scripts', 'html5blank_conditional_scripts'); // Add Conditional Page Scripts
add_action('get_header', 'enable_threaded_comments'); // Enable Threaded Comments
// add_action('wp_enqueue_scripts', 'html5blank_styles'); // Add Theme Stylesheet
add_action('init', 'register_html5_menu'); // Add HTML5 Blank Menu
// add_action('init', 'create_post_type_html5'); // Add our HTML5 Blank Custom Post Type
add_action('widgets_init', 'my_remove_recent_comments_style'); // Remove inline Recent Comment Styles from wp_head()
add_action('init', 'html5wp_pagination'); // Add our HTML5 Pagination

// Remove Actions
remove_action('wp_head', 'feed_links_extra', 3); // Display the links to the extra feeds such as category feeds
remove_action('wp_head', 'feed_links', 2); // Display the links to the general feeds: Post and Comment Feed
remove_action('wp_head', 'rsd_link'); // Display the link to the Really Simple Discovery service endpoint, EditURI link
remove_action('wp_head', 'wlwmanifest_link'); // Display the link to the Windows Live Writer manifest file.
remove_action('wp_head', 'index_rel_link'); // Index link
remove_action('wp_head', 'parent_post_rel_link', 10, 0); // Prev link
remove_action('wp_head', 'start_post_rel_link', 10, 0); // Start link
remove_action('wp_head', 'adjacent_posts_rel_link', 10, 0); // Display relational links for the posts adjacent to the current post.
remove_action('wp_head', 'wp_generator'); // Display the XHTML generator that is generated on the wp_head hook, WP version
remove_action('wp_head', 'adjacent_posts_rel_link_wp_head', 10, 0);
remove_action('wp_head', 'rel_canonical');
remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0);

// Add Filters
// add_filter('avatar_defaults', 'html5blankgravatar'); // Custom Gravatar in Settings > Discussion
add_filter('body_class', 'add_slug_to_body_class'); // Add slug to body class (Starkers build)
add_filter('widget_text', 'do_shortcode'); // Allow shortcodes in Dynamic Sidebar
add_filter('widget_text', 'shortcode_unautop'); // Remove <p> tags in Dynamic Sidebars (better!)
add_filter('wp_nav_menu_args', 'my_wp_nav_menu_args'); // Remove surrounding <div> from WP Navigation
// add_filter('nav_menu_css_class', 'my_css_attributes_filter', 100, 1); // Remove Navigation <li> injected classes (Commented out by default)
// add_filter('nav_menu_item_id', 'my_css_attributes_filter', 100, 1); // Remove Navigation <li> injected ID (Commented out by default)
// add_filter('page_css_class', 'my_css_attributes_filter', 100, 1); // Remove Navigation <li> Page ID's (Commented out by default)
add_filter('the_category', 'remove_category_rel_from_category_list'); // Remove invalid rel attribute
add_filter('the_excerpt', 'shortcode_unautop'); // Remove auto <p> tags in Excerpt (Manual Excerpts only)
add_filter('the_excerpt', 'do_shortcode'); // Allows Shortcodes to be executed in Excerpt (Manual Excerpts only)
add_filter('excerpt_more', 'html5_blank_view_article'); // Add 'View Article' button instead of [...] for Excerpts
add_filter('show_admin_bar', 'remove_admin_bar'); // Remove Admin bar
add_filter('style_loader_tag', 'html5_style_remove'); // Remove 'text/css' from enqueued stylesheet
add_filter('post_thumbnail_html', 'remove_thumbnail_dimensions', 10); // Remove width and height dynamic attributes to thumbnails
add_filter('image_send_to_editor', 'remove_thumbnail_dimensions', 10); // Remove width and height dynamic attributes to post images

// Remove Filters
remove_filter('the_excerpt', 'wpautop'); // Remove <p> tags from Excerpt altogether

// Shortcodes
add_shortcode('html5_shortcode_demo', 'html5_shortcode_demo'); // You can place [html5_shortcode_demo] in Pages, Posts now.
add_shortcode('html5_shortcode_demo_2', 'html5_shortcode_demo_2'); // Place [html5_shortcode_demo_2] in Pages, Posts now.

// Shortcodes above would be nested like this -
// [html5_shortcode_demo] [html5_shortcode_demo_2] Here's the page title! [/html5_shortcode_demo_2] [/html5_shortcode_demo]

/*------------------------------------*\
	ShortCode Functions
\*------------------------------------*/

// Shortcode Demo with Nested Capability
function html5_shortcode_demo($atts, $content = null)
{
    return '<div class="shortcode-demo">' . do_shortcode($content) . '</div>'; // do_shortcode allows for nested Shortcodes
}

// Shortcode Demo with simple <h2> tag
function html5_shortcode_demo_2($atts, $content = null) // Demo Heading H2 shortcode, allows for nesting within above element. Fully expandable.
{
    return '<h2>' . $content . '</h2>';
}

/* End HTML5 Blank */

/*------------------------------------*\
    Custom functions
\*------------------------------------*/

// Define the latest or desired jQuery version
define('JQUERY_V', '');

if (JQUERY_V == '') {
    echo ("You haven't defined the jQuery version you want to use. Define the 'JQUERY_V' consant in the functions.php file");
} else {
    // Enqueue jQuery via CDN
    function register_jquery() {
            wp_deregister_script( 'jquery' );
            wp_register_script( 'jquery', ( 'https://ajax.googleapis.com/ajax/libs/jquery/' . JQUERY_V . '/jquery.min.js' ), false, null, true );
            wp_enqueue_script( 'jquery' );
        }
    add_action( 'wp_enqueue_scripts', 'register_jquery' );
}

// Enqueue scripts and styles
function enqueue_theme_scripts_and_styles() 
{
    wp_enqueue_style( 'global', get_template_directory_uri() . '/dist/css/style.css', null, '', '' );

    // Enqueue page specific scripts and styles

    if (is_singular('example')) {
        // wp_enqueue_script( 'example', get_template_directory_uri() . '/dist/js/example.js', null, '', true );
    }

    // Load concatenated scripts file
    wp_enqueue_script( 'scripts', get_template_directory_uri() . '/dist/js/scripts.js', null, '', true );
    
    // Load our global file last so we can manipulate any plugins from here
    wp_enqueue_script( 'global', get_template_directory_uri() . '/dist/js/global.js', null, '', true );
}
add_action( 'wp_enqueue_scripts', 'enqueue_theme_scripts_and_styles' );

// Dequeue grunion forms CSS
function remove_grunion_style() {
     wp_deregister_style('grunion.css');
}
add_action('wp_print_styles', 'remove_grunion_style');

// Set contact form success message
function amgenna_change_grunion_success_message( $msg ) {
global $contact_form_message;
return '<div><h2>' . 'Your enquiry was successfully sent' . '</h2><a href="' . get_permalink() . '">' . 'Go back ' . '</a></div>' . wp_kses($contact_form_message, array('br' => array(), 'blockquote' => array()));
}
add_filter( 'grunion_contact_form_success_message', 'amgenna_change_grunion_success_message' );

// Detect blog pages
function is_blog () {
    global  $post;
    $posttype = get_post_type($post );
    return ( ((is_archive()) || (is_author()) || (is_category()) || (is_home()) || (is_single()) || (is_tag())) && ( $posttype == 'post')  ) ? true : false ;
}

// Hide update notifications from all users except those defined below
function check_current_username_and_hide_updates()
{
    $user = wp_get_current_user();

    if($user && isset($user->user_login) && 'info@candidsky.com' != $user->user_login)
    {
        function wphidenag() {
            remove_action( 'admin_notices', 'update_nag', 3 );
        }
        add_action('admin_menu','wphidenag');

        function wphidenagcss() {
            echo '<style>
            .update-count, .plugin-count {
                display:none !important;
            }
          </style>';
        }
        add_filter('admin_head','wphidenagcss');
    }
}
add_action('admin_init', 'check_current_username_and_hide_updates');

/*
 * This filter fixes an issue where the blog page is highlighted as a menu item
 * for archives/singles of other post types.
 */
add_filter('nav_menu_css_class', 'mytheme_custom_type_nav_class', 10, 2);

function mytheme_custom_type_nav_class($classes, $item) {
  $post_type = get_post_type();

  // Remove current_page_parent from classes if the current item is the blog page
  // Note: The object_id property seems to be the ID of the menu item's target.
  if ($post_type != 'post' && $item->object_id == get_option('page_for_posts')) {
      $current_value = "current_page_parent"; 
      $classes = array_filter($classes, function ($element) use ($current_value) { return ($element != $current_value); } );
  }

  // Now look for post-type-<name> in the classes. A menu item with this class
  // should be given a class that will highlight it.
  $this_type_class = 'post-type-' . $post_type;
  if (in_array( $this_type_class, $classes )) {       
      array_push($classes, 'current_page_parent');
  };

  return $classes;
}

// Change JPEG upload compression
add_filter( 'jpeg_quality', create_function( '', 'return 70;' ) );

// Returns or echo URLs
function getThemePath($return = false) {
    $url = get_template_directory_uri();
    if ($return === true) return $url;
    else echo $url;
}

function getBasePath($return = false) {
    $url = site_url();
    if ($return === true) return $url;
    else echo $url;
}

function getImagePath($return = false)
{
  $url = get_template_directory_uri() . '/dist/images';
  if ($return === true) return $url;
  else echo $url;
}

function dist_url() {
  echo get_template_directory_uri() . '/dist';
}

// Variable exists
function variable_exists($variable)
{
  return ! empty($variable) && $variable;
}

// Produce a pretty link from a post ID
function dynamic_link($id, $return = false) {
    $link = get_permalink($id);
    if($return === true) return $link;
    else echo $link;
}

// Truncate words
function truncate_words($text, $limit, $ellipsis = '&hellip;') {
    $words = preg_split("/[\n\r\t ]+/", $text, $limit + 1, PREG_SPLIT_NO_EMPTY|PREG_SPLIT_OFFSET_CAPTURE);

    if (count($words) > $limit) {
        end($words); //ignore last element since it contains the rest of the string
        $last_word = preg_replace("/\.$/", "", prev($words));
           
        $text =  substr($text, 0, $last_word[1] + strlen($last_word[0])) . $ellipsis;
    }
    return $text;
}

// Set custom image sizes
add_image_size( 'example', 1080, 400, true );

?>