wp/wp-content/themes/twentythirteen/functions.php
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     1 <?php
       
     2 /**
       
     3  * Twenty Thirteen functions and definitions
       
     4  *
       
     5  * Sets up the theme and provides some helper functions, which are used in the
       
     6  * theme as custom template tags. Others are attached to action and filter
       
     7  * hooks in WordPress to change core functionality.
       
     8  *
       
     9  * When using a child theme (see http://codex.wordpress.org/Theme_Development
       
    10  * and http://codex.wordpress.org/Child_Themes), you can override certain
       
    11  * functions (those wrapped in a function_exists() call) by defining them first
       
    12  * in your child theme's functions.php file. The child theme's functions.php
       
    13  * file is included before the parent theme's file, so the child theme
       
    14  * functions would be used.
       
    15  *
       
    16  * Functions that are not pluggable (not wrapped in function_exists()) are
       
    17  * instead attached to a filter or action hook.
       
    18  *
       
    19  * For more information on hooks, actions, and filters, @link http://codex.wordpress.org/Plugin_API
       
    20  *
       
    21  * @package WordPress
       
    22  * @subpackage Twenty_Thirteen
       
    23  * @since Twenty Thirteen 1.0
       
    24  */
       
    25 
       
    26 /*
       
    27  * Set up the content width value based on the theme's design.
       
    28  *
       
    29  * @see twentythirteen_content_width() for template-specific adjustments.
       
    30  */
       
    31 if ( ! isset( $content_width ) )
       
    32 	$content_width = 604;
       
    33 
       
    34 /**
       
    35  * Add support for a custom header image.
       
    36  */
       
    37 require get_template_directory() . '/inc/custom-header.php';
       
    38 
       
    39 /**
       
    40  * Twenty Thirteen only works in WordPress 3.6 or later.
       
    41  */
       
    42 if ( version_compare( $GLOBALS['wp_version'], '3.6-alpha', '<' ) )
       
    43 	require get_template_directory() . '/inc/back-compat.php';
       
    44 
       
    45 /**
       
    46  * Twenty Thirteen setup.
       
    47  *
       
    48  * Sets up theme defaults and registers the various WordPress features that
       
    49  * Twenty Thirteen supports.
       
    50  *
       
    51  * @uses load_theme_textdomain() For translation/localization support.
       
    52  * @uses add_editor_style() To add Visual Editor stylesheets.
       
    53  * @uses add_theme_support() To add support for automatic feed links, post
       
    54  * formats, and post thumbnails.
       
    55  * @uses register_nav_menu() To add support for a navigation menu.
       
    56  * @uses set_post_thumbnail_size() To set a custom post thumbnail size.
       
    57  *
       
    58  * @since Twenty Thirteen 1.0
       
    59  *
       
    60  * @return void
       
    61  */
       
    62 function twentythirteen_setup() {
       
    63 	/*
       
    64 	 * Makes Twenty Thirteen available for translation.
       
    65 	 *
       
    66 	 * Translations can be added to the /languages/ directory.
       
    67 	 * If you're building a theme based on Twenty Thirteen, use a find and
       
    68 	 * replace to change 'twentythirteen' to the name of your theme in all
       
    69 	 * template files.
       
    70 	 */
       
    71 	load_theme_textdomain( 'twentythirteen', get_template_directory() . '/languages' );
       
    72 
       
    73 	/*
       
    74 	 * This theme styles the visual editor to resemble the theme style,
       
    75 	 * specifically font, colors, icons, and column width.
       
    76 	 */
       
    77 	add_editor_style( array( 'css/editor-style.css', 'fonts/genericons.css', twentythirteen_fonts_url() ) );
       
    78 
       
    79 	// Adds RSS feed links to <head> for posts and comments.
       
    80 	add_theme_support( 'automatic-feed-links' );
       
    81 
       
    82 	/*
       
    83 	 * Switches default core markup for search form, comment form,
       
    84 	 * and comments to output valid HTML5.
       
    85 	 */
       
    86 	add_theme_support( 'html5', array( 'search-form', 'comment-form', 'comment-list' ) );
       
    87 
       
    88 	/*
       
    89 	 * This theme supports all available post formats by default.
       
    90 	 * See http://codex.wordpress.org/Post_Formats
       
    91 	 */
       
    92 	add_theme_support( 'post-formats', array(
       
    93 		'aside', 'audio', 'chat', 'gallery', 'image', 'link', 'quote', 'status', 'video'
       
    94 	) );
       
    95 
       
    96 	// This theme uses wp_nav_menu() in one location.
       
    97 	register_nav_menu( 'primary', __( 'Navigation Menu', 'twentythirteen' ) );
       
    98 
       
    99 	/*
       
   100 	 * This theme uses a custom image size for featured images, displayed on
       
   101 	 * "standard" posts and pages.
       
   102 	 */
       
   103 	add_theme_support( 'post-thumbnails' );
       
   104 	set_post_thumbnail_size( 604, 270, true );
       
   105 
       
   106 	// This theme uses its own gallery styles.
       
   107 	add_filter( 'use_default_gallery_style', '__return_false' );
       
   108 }
       
   109 add_action( 'after_setup_theme', 'twentythirteen_setup' );
       
   110 
       
   111 /**
       
   112  * Return the Google font stylesheet URL, if available.
       
   113  *
       
   114  * The use of Source Sans Pro and Bitter by default is localized. For languages
       
   115  * that use characters not supported by the font, the font can be disabled.
       
   116  *
       
   117  * @since Twenty Thirteen 1.0
       
   118  *
       
   119  * @return string Font stylesheet or empty string if disabled.
       
   120  */
       
   121 function twentythirteen_fonts_url() {
       
   122 	$fonts_url = '';
       
   123 
       
   124 	/* Translators: If there are characters in your language that are not
       
   125 	 * supported by Source Sans Pro, translate this to 'off'. Do not translate
       
   126 	 * into your own language.
       
   127 	 */
       
   128 	$source_sans_pro = _x( 'on', 'Source Sans Pro font: on or off', 'twentythirteen' );
       
   129 
       
   130 	/* Translators: If there are characters in your language that are not
       
   131 	 * supported by Bitter, translate this to 'off'. Do not translate into your
       
   132 	 * own language.
       
   133 	 */
       
   134 	$bitter = _x( 'on', 'Bitter font: on or off', 'twentythirteen' );
       
   135 
       
   136 	if ( 'off' !== $source_sans_pro || 'off' !== $bitter ) {
       
   137 		$font_families = array();
       
   138 
       
   139 		if ( 'off' !== $source_sans_pro )
       
   140 			$font_families[] = 'Source Sans Pro:300,400,700,300italic,400italic,700italic';
       
   141 
       
   142 		if ( 'off' !== $bitter )
       
   143 			$font_families[] = 'Bitter:400,700';
       
   144 
       
   145 		$query_args = array(
       
   146 			'family' => urlencode( implode( '|', $font_families ) ),
       
   147 			'subset' => urlencode( 'latin,latin-ext' ),
       
   148 		);
       
   149 		$fonts_url = add_query_arg( $query_args, "//fonts.googleapis.com/css" );
       
   150 	}
       
   151 
       
   152 	return $fonts_url;
       
   153 }
       
   154 
       
   155 /**
       
   156  * Enqueue scripts and styles for the front end.
       
   157  *
       
   158  * @since Twenty Thirteen 1.0
       
   159  *
       
   160  * @return void
       
   161  */
       
   162 function twentythirteen_scripts_styles() {
       
   163 	/*
       
   164 	 * Adds JavaScript to pages with the comment form to support
       
   165 	 * sites with threaded comments (when in use).
       
   166 	 */
       
   167 	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) )
       
   168 		wp_enqueue_script( 'comment-reply' );
       
   169 
       
   170 	// Adds Masonry to handle vertical alignment of footer widgets.
       
   171 	if ( is_active_sidebar( 'sidebar-1' ) )
       
   172 		wp_enqueue_script( 'jquery-masonry' );
       
   173 
       
   174 	// Loads JavaScript file with functionality specific to Twenty Thirteen.
       
   175 	wp_enqueue_script( 'twentythirteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '2013-07-18', true );
       
   176 
       
   177 	// Add Source Sans Pro and Bitter fonts, used in the main stylesheet.
       
   178 	wp_enqueue_style( 'twentythirteen-fonts', twentythirteen_fonts_url(), array(), null );
       
   179 
       
   180 	// Add Genericons font, used in the main stylesheet.
       
   181 	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/fonts/genericons.css', array(), '2.09' );
       
   182 
       
   183 	// Loads our main stylesheet.
       
   184 	wp_enqueue_style( 'twentythirteen-style', get_stylesheet_uri(), array(), '2013-07-18' );
       
   185 
       
   186 	// Loads the Internet Explorer specific stylesheet.
       
   187 	wp_enqueue_style( 'twentythirteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentythirteen-style' ), '2013-07-18' );
       
   188 	wp_style_add_data( 'twentythirteen-ie', 'conditional', 'lt IE 9' );
       
   189 }
       
   190 add_action( 'wp_enqueue_scripts', 'twentythirteen_scripts_styles' );
       
   191 
       
   192 /**
       
   193  * Filter the page title.
       
   194  *
       
   195  * Creates a nicely formatted and more specific title element text for output
       
   196  * in head of document, based on current view.
       
   197  *
       
   198  * @since Twenty Thirteen 1.0
       
   199  *
       
   200  * @param string $title Default title text for current view.
       
   201  * @param string $sep   Optional separator.
       
   202  * @return string The filtered title.
       
   203  */
       
   204 function twentythirteen_wp_title( $title, $sep ) {
       
   205 	global $paged, $page;
       
   206 
       
   207 	if ( is_feed() )
       
   208 		return $title;
       
   209 
       
   210 	// Add the site name.
       
   211 	$title .= get_bloginfo( 'name' );
       
   212 
       
   213 	// Add the site description for the home/front page.
       
   214 	$site_description = get_bloginfo( 'description', 'display' );
       
   215 	if ( $site_description && ( is_home() || is_front_page() ) )
       
   216 		$title = "$title $sep $site_description";
       
   217 
       
   218 	// Add a page number if necessary.
       
   219 	if ( $paged >= 2 || $page >= 2 )
       
   220 		$title = "$title $sep " . sprintf( __( 'Page %s', 'twentythirteen' ), max( $paged, $page ) );
       
   221 
       
   222 	return $title;
       
   223 }
       
   224 add_filter( 'wp_title', 'twentythirteen_wp_title', 10, 2 );
       
   225 
       
   226 /**
       
   227  * Register two widget areas.
       
   228  *
       
   229  * @since Twenty Thirteen 1.0
       
   230  *
       
   231  * @return void
       
   232  */
       
   233 function twentythirteen_widgets_init() {
       
   234 	register_sidebar( array(
       
   235 		'name'          => __( 'Main Widget Area', 'twentythirteen' ),
       
   236 		'id'            => 'sidebar-1',
       
   237 		'description'   => __( 'Appears in the footer section of the site.', 'twentythirteen' ),
       
   238 		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
       
   239 		'after_widget'  => '</aside>',
       
   240 		'before_title'  => '<h3 class="widget-title">',
       
   241 		'after_title'   => '</h3>',
       
   242 	) );
       
   243 
       
   244 	register_sidebar( array(
       
   245 		'name'          => __( 'Secondary Widget Area', 'twentythirteen' ),
       
   246 		'id'            => 'sidebar-2',
       
   247 		'description'   => __( 'Appears on posts and pages in the sidebar.', 'twentythirteen' ),
       
   248 		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
       
   249 		'after_widget'  => '</aside>',
       
   250 		'before_title'  => '<h3 class="widget-title">',
       
   251 		'after_title'   => '</h3>',
       
   252 	) );
       
   253 }
       
   254 add_action( 'widgets_init', 'twentythirteen_widgets_init' );
       
   255 
       
   256 if ( ! function_exists( 'twentythirteen_paging_nav' ) ) :
       
   257 /**
       
   258  * Display navigation to next/previous set of posts when applicable.
       
   259  *
       
   260  * @since Twenty Thirteen 1.0
       
   261  *
       
   262  * @return void
       
   263  */
       
   264 function twentythirteen_paging_nav() {
       
   265 	global $wp_query;
       
   266 
       
   267 	// Don't print empty markup if there's only one page.
       
   268 	if ( $wp_query->max_num_pages < 2 )
       
   269 		return;
       
   270 	?>
       
   271 	<nav class="navigation paging-navigation" role="navigation">
       
   272 		<h1 class="screen-reader-text"><?php _e( 'Posts navigation', 'twentythirteen' ); ?></h1>
       
   273 		<div class="nav-links">
       
   274 
       
   275 			<?php if ( get_next_posts_link() ) : ?>
       
   276 			<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentythirteen' ) ); ?></div>
       
   277 			<?php endif; ?>
       
   278 
       
   279 			<?php if ( get_previous_posts_link() ) : ?>
       
   280 			<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentythirteen' ) ); ?></div>
       
   281 			<?php endif; ?>
       
   282 
       
   283 		</div><!-- .nav-links -->
       
   284 	</nav><!-- .navigation -->
       
   285 	<?php
       
   286 }
       
   287 endif;
       
   288 
       
   289 if ( ! function_exists( 'twentythirteen_post_nav' ) ) :
       
   290 /**
       
   291  * Display navigation to next/previous post when applicable.
       
   292 *
       
   293 * @since Twenty Thirteen 1.0
       
   294 *
       
   295 * @return void
       
   296 */
       
   297 function twentythirteen_post_nav() {
       
   298 	global $post;
       
   299 
       
   300 	// Don't print empty markup if there's nowhere to navigate.
       
   301 	$previous = ( is_attachment() ) ? get_post( $post->post_parent ) : get_adjacent_post( false, '', true );
       
   302 	$next     = get_adjacent_post( false, '', false );
       
   303 
       
   304 	if ( ! $next && ! $previous )
       
   305 		return;
       
   306 	?>
       
   307 	<nav class="navigation post-navigation" role="navigation">
       
   308 		<h1 class="screen-reader-text"><?php _e( 'Post navigation', 'twentythirteen' ); ?></h1>
       
   309 		<div class="nav-links">
       
   310 
       
   311 			<?php previous_post_link( '%link', _x( '<span class="meta-nav">&larr;</span> %title', 'Previous post link', 'twentythirteen' ) ); ?>
       
   312 			<?php next_post_link( '%link', _x( '%title <span class="meta-nav">&rarr;</span>', 'Next post link', 'twentythirteen' ) ); ?>
       
   313 
       
   314 		</div><!-- .nav-links -->
       
   315 	</nav><!-- .navigation -->
       
   316 	<?php
       
   317 }
       
   318 endif;
       
   319 
       
   320 if ( ! function_exists( 'twentythirteen_entry_meta' ) ) :
       
   321 /**
       
   322  * Print HTML with meta information for current post: categories, tags, permalink, author, and date.
       
   323  *
       
   324  * Create your own twentythirteen_entry_meta() to override in a child theme.
       
   325  *
       
   326  * @since Twenty Thirteen 1.0
       
   327  *
       
   328  * @return void
       
   329  */
       
   330 function twentythirteen_entry_meta() {
       
   331 	if ( is_sticky() && is_home() && ! is_paged() )
       
   332 		echo '<span class="featured-post">' . __( 'Sticky', 'twentythirteen' ) . '</span>';
       
   333 
       
   334 	if ( ! has_post_format( 'link' ) && 'post' == get_post_type() )
       
   335 		twentythirteen_entry_date();
       
   336 
       
   337 	// Translators: used between list items, there is a space after the comma.
       
   338 	$categories_list = get_the_category_list( __( ', ', 'twentythirteen' ) );
       
   339 	if ( $categories_list ) {
       
   340 		echo '<span class="categories-links">' . $categories_list . '</span>';
       
   341 	}
       
   342 
       
   343 	// Translators: used between list items, there is a space after the comma.
       
   344 	$tag_list = get_the_tag_list( '', __( ', ', 'twentythirteen' ) );
       
   345 	if ( $tag_list ) {
       
   346 		echo '<span class="tags-links">' . $tag_list . '</span>';
       
   347 	}
       
   348 
       
   349 	// Post author
       
   350 	if ( 'post' == get_post_type() ) {
       
   351 		printf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
       
   352 			esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
       
   353 			esc_attr( sprintf( __( 'View all posts by %s', 'twentythirteen' ), get_the_author() ) ),
       
   354 			get_the_author()
       
   355 		);
       
   356 	}
       
   357 }
       
   358 endif;
       
   359 
       
   360 if ( ! function_exists( 'twentythirteen_entry_date' ) ) :
       
   361 /**
       
   362  * Print HTML with date information for current post.
       
   363  *
       
   364  * Create your own twentythirteen_entry_date() to override in a child theme.
       
   365  *
       
   366  * @since Twenty Thirteen 1.0
       
   367  *
       
   368  * @param boolean $echo (optional) Whether to echo the date. Default true.
       
   369  * @return string The HTML-formatted post date.
       
   370  */
       
   371 function twentythirteen_entry_date( $echo = true ) {
       
   372 	if ( has_post_format( array( 'chat', 'status' ) ) )
       
   373 		$format_prefix = _x( '%1$s on %2$s', '1: post format name. 2: date', 'twentythirteen' );
       
   374 	else
       
   375 		$format_prefix = '%2$s';
       
   376 
       
   377 	$date = sprintf( '<span class="date"><a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a></span>',
       
   378 		esc_url( get_permalink() ),
       
   379 		esc_attr( sprintf( __( 'Permalink to %s', 'twentythirteen' ), the_title_attribute( 'echo=0' ) ) ),
       
   380 		esc_attr( get_the_date( 'c' ) ),
       
   381 		esc_html( sprintf( $format_prefix, get_post_format_string( get_post_format() ), get_the_date() ) )
       
   382 	);
       
   383 
       
   384 	if ( $echo )
       
   385 		echo $date;
       
   386 
       
   387 	return $date;
       
   388 }
       
   389 endif;
       
   390 
       
   391 if ( ! function_exists( 'twentythirteen_the_attached_image' ) ) :
       
   392 /**
       
   393  * Print the attached image with a link to the next attached image.
       
   394  *
       
   395  * @since Twenty Thirteen 1.0
       
   396  *
       
   397  * @return void
       
   398  */
       
   399 function twentythirteen_the_attached_image() {
       
   400 	/**
       
   401 	 * Filter the image attachment size to use.
       
   402 	 *
       
   403 	 * @since Twenty thirteen 1.0
       
   404 	 *
       
   405 	 * @param array $size {
       
   406 	 *     @type int The attachment height in pixels.
       
   407 	 *     @type int The attachment width in pixels.
       
   408 	 * }
       
   409 	 */
       
   410 	$attachment_size     = apply_filters( 'twentythirteen_attachment_size', array( 724, 724 ) );
       
   411 	$next_attachment_url = wp_get_attachment_url();
       
   412 	$post                = get_post();
       
   413 
       
   414 	/*
       
   415 	 * Grab the IDs of all the image attachments in a gallery so we can get the URL
       
   416 	 * of the next adjacent image in a gallery, or the first image (if we're
       
   417 	 * looking at the last image in a gallery), or, in a gallery of one, just the
       
   418 	 * link to that image file.
       
   419 	 */
       
   420 	$attachment_ids = get_posts( array(
       
   421 		'post_parent'    => $post->post_parent,
       
   422 		'fields'         => 'ids',
       
   423 		'numberposts'    => -1,
       
   424 		'post_status'    => 'inherit',
       
   425 		'post_type'      => 'attachment',
       
   426 		'post_mime_type' => 'image',
       
   427 		'order'          => 'ASC',
       
   428 		'orderby'        => 'menu_order ID'
       
   429 	) );
       
   430 
       
   431 	// If there is more than 1 attachment in a gallery...
       
   432 	if ( count( $attachment_ids ) > 1 ) {
       
   433 		foreach ( $attachment_ids as $attachment_id ) {
       
   434 			if ( $attachment_id == $post->ID ) {
       
   435 				$next_id = current( $attachment_ids );
       
   436 				break;
       
   437 			}
       
   438 		}
       
   439 
       
   440 		// get the URL of the next image attachment...
       
   441 		if ( $next_id )
       
   442 			$next_attachment_url = get_attachment_link( $next_id );
       
   443 
       
   444 		// or get the URL of the first image attachment.
       
   445 		else
       
   446 			$next_attachment_url = get_attachment_link( array_shift( $attachment_ids ) );
       
   447 	}
       
   448 
       
   449 	printf( '<a href="%1$s" title="%2$s" rel="attachment">%3$s</a>',
       
   450 		esc_url( $next_attachment_url ),
       
   451 		the_title_attribute( array( 'echo' => false ) ),
       
   452 		wp_get_attachment_image( $post->ID, $attachment_size )
       
   453 	);
       
   454 }
       
   455 endif;
       
   456 
       
   457 /**
       
   458  * Return the post URL.
       
   459  *
       
   460  * @uses get_url_in_content() to get the URL in the post meta (if it exists) or
       
   461  * the first link found in the post content.
       
   462  *
       
   463  * Falls back to the post permalink if no URL is found in the post.
       
   464  *
       
   465  * @since Twenty Thirteen 1.0
       
   466  *
       
   467  * @return string The Link format URL.
       
   468  */
       
   469 function twentythirteen_get_link_url() {
       
   470 	$content = get_the_content();
       
   471 	$has_url = get_url_in_content( $content );
       
   472 
       
   473 	return ( $has_url ) ? $has_url : apply_filters( 'the_permalink', get_permalink() );
       
   474 }
       
   475 
       
   476 /**
       
   477  * Extend the default WordPress body classes.
       
   478  *
       
   479  * Adds body classes to denote:
       
   480  * 1. Single or multiple authors.
       
   481  * 2. Active widgets in the sidebar to change the layout and spacing.
       
   482  * 3. When avatars are disabled in discussion settings.
       
   483  *
       
   484  * @since Twenty Thirteen 1.0
       
   485  *
       
   486  * @param array $classes A list of existing body class values.
       
   487  * @return array The filtered body class list.
       
   488  */
       
   489 function twentythirteen_body_class( $classes ) {
       
   490 	if ( ! is_multi_author() )
       
   491 		$classes[] = 'single-author';
       
   492 
       
   493 	if ( is_active_sidebar( 'sidebar-2' ) && ! is_attachment() && ! is_404() )
       
   494 		$classes[] = 'sidebar';
       
   495 
       
   496 	if ( ! get_option( 'show_avatars' ) )
       
   497 		$classes[] = 'no-avatars';
       
   498 
       
   499 	return $classes;
       
   500 }
       
   501 add_filter( 'body_class', 'twentythirteen_body_class' );
       
   502 
       
   503 /**
       
   504  * Adjust content_width value for video post formats and attachment templates.
       
   505  *
       
   506  * @since Twenty Thirteen 1.0
       
   507  *
       
   508  * @return void
       
   509  */
       
   510 function twentythirteen_content_width() {
       
   511 	global $content_width;
       
   512 
       
   513 	if ( is_attachment() )
       
   514 		$content_width = 724;
       
   515 	elseif ( has_post_format( 'audio' ) )
       
   516 		$content_width = 484;
       
   517 }
       
   518 add_action( 'template_redirect', 'twentythirteen_content_width' );
       
   519 
       
   520 /**
       
   521  * Add postMessage support for site title and description for the Customizer.
       
   522  *
       
   523  * @since Twenty Thirteen 1.0
       
   524  *
       
   525  * @param WP_Customize_Manager $wp_customize Customizer object.
       
   526  * @return void
       
   527  */
       
   528 function twentythirteen_customize_register( $wp_customize ) {
       
   529 	$wp_customize->get_setting( 'blogname' )->transport         = 'postMessage';
       
   530 	$wp_customize->get_setting( 'blogdescription' )->transport  = 'postMessage';
       
   531 	$wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';
       
   532 }
       
   533 add_action( 'customize_register', 'twentythirteen_customize_register' );
       
   534 
       
   535 /**
       
   536  * Enqueue Javascript postMessage handlers for the Customizer.
       
   537  *
       
   538  * Binds JavaScript handlers to make the Customizer preview
       
   539  * reload changes asynchronously.
       
   540  *
       
   541  * @since Twenty Thirteen 1.0
       
   542  *
       
   543  * @return void
       
   544  */
       
   545 function twentythirteen_customize_preview_js() {
       
   546 	wp_enqueue_script( 'twentythirteen-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20130226', true );
       
   547 }
       
   548 add_action( 'customize_preview_init', 'twentythirteen_customize_preview_js' );