functions.php

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


/*------------------------------------*\
    External Modules/Files
\*------------------------------------*/

include_once 'inc/content-functions.php';

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

if (!isset($content_width)) {
    $content_width = 900;
}

if (function_exists('add_theme_support')) {

    // Add Thumbnail Theme Support
    add_theme_support('post-thumbnails');

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

    // Enable mind support
    add_theme_support('mind', array('comment-list', 'comment-form', 'search-form', 'gallery', 'caption'));

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

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

// mind Blank navigation
function mindblank_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' => ''
        )
    );
}

// Load mind Blank scripts (header.php)
function mindblank_header_scripts()
{
    if ($GLOBALS['pagenow'] != 'wp-login.php' && !is_admin()) {
        wp_register_script('mindblankscripts-min', get_template_directory_uri() . '/js/scripts.js', array(), '1.0.0');
        wp_enqueue_script('mindblankscripts-min');

        wp_register_script('bootstrap', 'https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js', array('jquery'), '1.0.0');
        wp_enqueue_script('bootstrap');
    }
}

// Load mind Blank conditional scripts
function mindblank_conditional_scripts()
{
//    if (is_page('pagenamehere')) {
//        // Conditional script(s)
//        wp_register_script('scriptname', get_template_directory_uri() . '/js/scriptname.js', array('jquery'), '1.0.0');
//        wp_enqueue_script('scriptname');
//    }
}

// Load mind Blank styles
function mindblank_styles()
{
    wp_register_style('mindblankcssmin', get_template_directory_uri() . '/style.css', array(), '1.0');
    wp_enqueue_style('mindblankcssmin');
}

// Register mind Blank Navigation
function register_mind_menu()
{
    register_nav_menus(array( // Using array to specify more menus if needed
        'header-menu' => __('Header Menu', 'mindblank'), // Main Navigation
        'sidebar-menu' => __('Sidebar Menu', 'mindblank'), // Sidebar Navigation
    ));
}

// 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;
}

// Remove the width and height attributes from inserted images
function remove_width_attribute($html)
{
    $html = preg_replace('/(width|height)="\d*"\s/', "", $html);
    return $html;
}


// If Dynamic Sidebar Exists
if (function_exists('register_sidebar')) {
    // Define Sidebar Widget Area 1
    register_sidebar(array(
        'name' => __('Widget Area 1', 'mindblank'),
        'description' => __('Description for this widget-area...', 'mindblank'),
        'id' => 'widget-area-1',
        '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;

    if (isset($wp_widget_factory->widgets['WP_Widget_Recent_Comments'])) {
        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 mindwp_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
    ));
}


// Create the Custom Excerpts callback
function mindwp_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 mind_blank_view_article($more)
{
    global $post;
    return '... <a class="view-article" href="' . get_permalink($post->ID) . '">' . __('View Article', 'mindblank') . '</a>';
}


// Remove 'text/css' from our enqueued stylesheet
function mind_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 mindblankgravatar($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 mindblankcomments($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, $args['avatar_size']); ?>
        <?php printf(__('<cite class="fn">%s</cite> <span class="says">says:</span>'), get_comment_author_link()) ?>
    </div>
    <?php if ($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', 'mindblank_header_scripts'); // Add Custom Scripts to wp_head
add_action('wp_print_scripts', 'mindblank_conditional_scripts'); // Add Conditional Page Scripts
add_action('get_header', 'enable_threaded_comments'); // Enable Threaded Comments
add_action('wp_enqueue_scripts', 'mindblank_styles'); // Add Theme Stylesheet
add_action('init', 'register_mind_menu'); // Add mind Blank Menu
add_action('init', 'create_post_type_mind'); // Add our mind Blank Custom Post Type
add_action('widgets_init', 'my_remove_recent_comments_style'); // Remove inline Recent Comment Styles from wp_head()
add_action('init', 'mindwp_pagination'); // Add our mind 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', 'wp_generator'); // Display the XHTML generator that is generated on the wp_head hook, WP version
remove_action('wp_head', 'rel_canonical');
remove_action('wp_head', 'wp_shortlink_wp_head', 10, 0);

// Add Filters
add_filter('avatar_defaults', 'mindblankgravatar'); // 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', 'mind_blank_view_article'); // Add 'View Article' button instead of [...] for Excerpts
add_filter('style_loader_tag', 'mind_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('post_thumbnail_html', 'remove_width_attribute', 10); // Remove width and height dynamic attributes to post images
add_filter('image_send_to_editor', 'remove_width_attribute', 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('mind_shortcode_demo', 'mind_shortcode_demo'); // You can place [mind_shortcode_demo] in Pages, Posts now.
add_shortcode('mind_shortcode_demo_2', 'mind_shortcode_demo_2'); // Place [mind_shortcode_demo_2] in Pages, Posts now.

// Shortcodes above would be nested like this -
// [mind_shortcode_demo] [mind_shortcode_demo_2] Here's the page title! [/mind_shortcode_demo_2] [/mind_shortcode_demo]

/*------------------------------------*\
    Custom Post Types
\*------------------------------------*/

// Create 1 Custom Post type for a Demo, called mind-Blank
function create_post_type_mind()
{
    register_taxonomy_for_object_type('category', 'mind-blank'); // Register Taxonomies for Category
    register_taxonomy_for_object_type('post_tag', 'mind-blank');
    register_post_type('mind-blank', // Register Custom Post Type
        array(
            'labels' => array(
                'name' => __('mind Blank Custom Post', 'mindblank'), // Rename these to suit
                'singular_name' => __('mind Blank Custom Post', 'mindblank'),
                'add_new' => __('Add New', 'mindblank'),
                'add_new_item' => __('Add New mind Blank Custom Post', 'mindblank'),
                'edit' => __('Edit', 'mindblank'),
                'edit_item' => __('Edit mind Blank Custom Post', 'mindblank'),
                'new_item' => __('New mind Blank Custom Post', 'mindblank'),
                'view' => __('View mind Blank Custom Post', 'mindblank'),
                'view_item' => __('View mind Blank Custom Post', 'mindblank'),
                'search_items' => __('Search mind Blank Custom Post', 'mindblank'),
                'not_found' => __('No mind Blank Custom Posts found', 'mindblank'),
                'not_found_in_trash' => __('No mind Blank Custom Posts found in Trash', 'mindblank')
            ),
            'public' => true,
            'hierarchical' => true, // Allows your posts to behave like Hierarchy Pages
            'has_archive' => true,
            'supports' => array(
                'title',
                'editor',
                'excerpt',
                'thumbnail'
            ), // Go to Dashboard Custom mind Blank post for supports
            'can_export' => true, // Allows export in Tools > Export
            'taxonomies' => array(
                'post_tag',
                'category'
            ) // Add Category and Post Tags support
        ));
}

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