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WordPress/wp-content/themes/twentytwelve/functions.php

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<?php
/**
* Twenty Twelve functions and definitions.
*
* Sets up the theme and provides some helper functions, which are used
* in the theme as custom template tags. Others are attached to action and
* filter hooks in WordPress to change core functionality.
*
* When using a child theme (see http://codex.wordpress.org/Theme_Development and
* http://codex.wordpress.org/Child_Themes), you can override certain functions
* (those wrapped in a function_exists() call) by defining them first in your child theme's
* functions.php file. The child theme's functions.php file is included before the parent
* theme's file, so the child theme functions would be used.
*
* Functions that are not pluggable (not wrapped in function_exists()) are instead attached
* to a filter or action hook.
*
* For more information on hooks, actions, and filters, see http://codex.wordpress.org/Plugin_API.
*
* @package WordPress
* @subpackage Twenty_Twelve
* @since Twenty Twelve 1.0
*/
/**
* Sets up the content width value based on the theme's design and stylesheet.
*/
if ( ! isset( $content_width ) )
$content_width = 625;
/**
* Sets up theme defaults and registers the various WordPress features that
* Twenty Twelve supports.
*
* @uses load_theme_textdomain() For translation/localization support.
* @uses add_editor_style() To add a Visual Editor stylesheet.
* @uses add_theme_support() To add support for post thumbnails, automatic feed links,
* custom background, and post formats.
* @uses register_nav_menu() To add support for navigation menus.
* @uses set_post_thumbnail_size() To set a custom post thumbnail size.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_setup() {
/*
* Makes Twenty Twelve available for translation.
*
* Translations can be added to the /languages/ directory.
* If you're building a theme based on Twenty Twelve, use a find and replace
* to change 'twentytwelve' to the name of your theme in all the template files.
*/
load_theme_textdomain( 'twentytwelve', get_template_directory() . '/languages' );
// This theme styles the visual editor with editor-style.css to match the theme style.
add_editor_style();
// Adds RSS feed links to <head> for posts and comments.
add_theme_support( 'automatic-feed-links' );
// This theme supports a variety of post formats.
add_theme_support( 'post-formats', array( 'aside', 'image', 'link', 'quote', 'status' ) );
// This theme uses wp_nav_menu() in one location.
register_nav_menu( 'primary', __( 'Primary Menu', 'twentytwelve' ) );
/*
* This theme supports custom background color and image, and here
* we also set up the default background color.
*/
add_theme_support( 'custom-background', array(
'default-color' => 'e6e6e6',
) );
// This theme uses a custom image size for featured images, displayed on "standard" posts.
add_theme_support( 'post-thumbnails' );
set_post_thumbnail_size( 624, 9999 ); // Unlimited height, soft crop
}
add_action( 'after_setup_theme', 'twentytwelve_setup' );
/**
* Adds support for a custom header image.
*/
require( get_template_directory() . '/inc/custom-header.php' );
/**
* Enqueues scripts and styles for front-end.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_scripts_styles() {
/*
* Adds JavaScript to pages with the comment form to support
* sites with threaded comments (when in use).
*/
if ( is_singular() && comments_open() && get_option( 'thread_comments' ) )
wp_enqueue_script( 'comment-reply' );
/*
* Adds JavaScript for handling the navigation menu hide-and-show behavior.
*/
wp_enqueue_script( 'twentytwelve-navigation', get_template_directory_uri() . '/js/navigation.js', array(), '20120920', true );
/*
* Loads our special font CSS file.
*
* The use of Open Sans by default is localized. For languages that use
* characters not supported by the font, the font can be disabled.
*
* To disable in a child theme, use wp_dequeue_style()
* function mytheme_dequeue_fonts() {
* wp_dequeue_style( 'twentytwelve-fonts' );
* }
* add_action( 'wp_enqueue_scripts', 'mytheme_dequeue_fonts', 11 );
*/
/* translators: If there are characters in your language that are not supported by Open Sans,
enter 'disable-open-sans'. Otherwise enter 'enable-open-sans'. Do not translate into your own language. */
if ( false === strpos( _x( 'enable-open-sans', 'Open Sans font: enable or disable', 'twentytwelve' ), 'disable' ) ) {
$protocol = is_ssl() ? 'https' : 'http';
wp_enqueue_style( 'twentytwelve-fonts', "$protocol://fonts.googleapis.com/css?family=Open+Sans:400italic,700italic,400,700", array(), null );
}
/*
* Loads our main stylesheet.
*/
wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri() );
/*
* Loads HTML5 JavaScript file to add support for HTML5 elements in older IE versions.
* Ideally, should load after main CSS file.
* See html5.js link in header.php.
*
* @todo depends on IE dependency being in core for JS enqueuing
* before we can move here properly: see http://core.trac.wordpress.org/ticket/16024
*/
}
add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
/**
* Creates a nicely formatted and more specific title element text
* for output in head of document, based on current view.
*
* @since Twenty Twelve 1.0
*
* @param string $title Default title text for current view.
* @param string $sep Optional separator.
* @return string Filtered title.
*/
function twentytwelve_wp_title( $title, $sep ) {
global $paged, $page;
if ( is_feed() )
return $title;
// Add the site name.
$title .= get_bloginfo( 'name' );
// Add the site description for the home/front page.
$site_description = get_bloginfo( 'description', 'display' );
if ( $site_description && ( is_home() || is_front_page() ) )
$title = "$title $sep $site_description";
// Add a page number if necessary.
if ( $paged >= 2 || $page >= 2 )
$title = "$title $sep " . sprintf( __( 'Page %s', 'twentytwelve' ), max( $paged, $page ) );
return $title;
}
add_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );
/**
* Makes our wp_nav_menu() fallback -- wp_page_menu() -- show a home link.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_page_menu_args( $args ) {
$args['show_home'] = true;
return $args;
}
add_filter( 'wp_page_menu_args', 'twentytwelve_page_menu_args' );
/**
* Registers our main widget area and the front page widget areas.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_widgets_init() {
register_sidebar( array(
'name' => __( 'Main Sidebar', 'twentytwelve' ),
'id' => 'sidebar-1',
'description' => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => '</aside>',
'before_title' => '<h3 class="widget-title">',
'after_title' => '</h3>',
) );
register_sidebar( array(
'name' => __( 'First Front Page Widget Area', 'twentytwelve' ),
'id' => 'sidebar-2',
'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => '</aside>',
'before_title' => '<h3 class="widget-title">',
'after_title' => '</h3>',
) );
register_sidebar( array(
'name' => __( 'Second Front Page Widget Area', 'twentytwelve' ),
'id' => 'sidebar-3',
'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
'before_widget' => '<aside id="%1$s" class="widget %2$s">',
'after_widget' => '</aside>',
'before_title' => '<h3 class="widget-title">',
'after_title' => '</h3>',
) );
}
add_action( 'widgets_init', 'twentytwelve_widgets_init' );
if ( ! function_exists( 'twentytwelve_content_nav' ) ) :
/**
* Displays navigation to next/previous pages when applicable.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_content_nav( $nav_id ) {
global $wp_query;
if ( $wp_query->max_num_pages > 1 ) : ?>
<nav id="<?php echo $nav_id; ?>" class="navigation" role="navigation">
<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
<div class="nav-previous alignleft"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentytwelve' ) ); ?></div>
<div class="nav-next alignright"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentytwelve' ) ); ?></div>
</nav><!-- #<?php echo $nav_id; ?> .navigation -->
<?php endif;
}
endif;
if ( ! function_exists( 'twentytwelve_comment' ) ) :
/**
* Template for comments and pingbacks.
*
* To override this walker in a child theme without modifying the comments template
* simply create your own twentytwelve_comment(), and that function will be used instead.
*
* Used as a callback by wp_list_comments() for displaying the comments.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_comment( $comment, $args, $depth ) {
$GLOBALS['comment'] = $comment;
switch ( $comment->comment_type ) :
case 'pingback' :
case 'trackback' :
// Display trackbacks differently than normal comments.
?>
<li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
<p><?php _e( 'Pingback:', 'twentytwelve' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( '(Edit)', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?></p>
<?php
break;
default :
// Proceed with normal comments.
global $post;
?>
<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
<article id="comment-<?php comment_ID(); ?>" class="comment">
<header class="comment-meta comment-author vcard">
<?php
echo get_avatar( $comment, 44 );
printf( '<cite class="fn">%1$s %2$s</cite>',
get_comment_author_link(),
// If current post author is also comment author, make it known visually.
( $comment->user_id === $post->post_author ) ? '<span> ' . __( 'Post author', 'twentytwelve' ) . '</span>' : ''
);
printf( '<a href="%1$s"><time pubdate datetime="%2$s">%3$s</time></a>',
esc_url( get_comment_link( $comment->comment_ID ) ),
get_comment_time( 'c' ),
/* translators: 1: date, 2: time */
sprintf( __( '%1$s at %2$s', 'twentytwelve' ), get_comment_date(), get_comment_time() )
);
?>
</header><!-- .comment-meta -->
<?php if ( '0' == $comment->comment_approved ) : ?>
<p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'twentytwelve' ); ?></p>
<?php endif; ?>
<section class="comment-content comment">
<?php comment_text(); ?>
<?php edit_comment_link( __( 'Edit', 'twentytwelve' ), '<p class="edit-link">', '</p>' ); ?>
</section><!-- .comment-content -->
<div class="reply">
<?php comment_reply_link( array_merge( $args, array( 'reply_text' => __( 'Reply <span>&darr;</span>', 'twentytwelve' ), 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
</div><!-- .reply -->
</article><!-- #comment-## -->
<?php
break;
endswitch; // end comment_type check
}
endif;
if ( ! function_exists( 'twentytwelve_entry_meta' ) ) :
/**
* Prints HTML with meta information for current post: categories, tags, permalink, author, and date.
*
* Create your own twentytwelve_entry_meta() to override in a child theme.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_entry_meta() {
// Translators: used between list items, there is a space after the comma.
$categories_list = get_the_category_list( __( ', ', 'twentytwelve' ) );
// Translators: used between list items, there is a space after the comma.
$tag_list = get_the_tag_list( '', __( ', ', 'twentytwelve' ) );
$date = sprintf( '<a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s" pubdate>%4$s</time></a>',
esc_url( get_permalink() ),
esc_attr( get_the_time() ),
esc_attr( get_the_date( 'c' ) ),
esc_html( get_the_date() )
);
$author = sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
esc_attr( sprintf( __( 'View all posts by %s', 'twentytwelve' ), get_the_author() ) ),
get_the_author()
);
// Translators: 1 is category, 2 is tag, 3 is the date and 4 is the author's name.
if ( $tag_list ) {
$utility_text = __( 'This entry was posted in %1$s and tagged %2$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
} elseif ( $categories_list ) {
$utility_text = __( 'This entry was posted in %1$s on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
} else {
$utility_text = __( 'This entry was posted on %3$s<span class="by-author"> by %4$s</span>.', 'twentytwelve' );
}
printf(
$utility_text,
$categories_list,
$tag_list,
$date,
$author
);
}
endif;
/**
* Extends the default WordPress body class to denote:
* 1. Using a full-width layout, when no active widgets in the sidebar
* or full-width template.
* 2. Front Page template: thumbnail in use and number of sidebars for
* widget areas.
* 3. White or empty background color to change the layout and spacing.
* 4. Custom fonts enabled.
* 5. Single or multiple authors.
*
* @since Twenty Twelve 1.0
*
* @param array Existing class values.
* @return array Filtered class values.
*/
function twentytwelve_body_class( $classes ) {
$background_color = get_background_color();
if ( ! is_active_sidebar( 'sidebar-1' ) || is_page_template( 'page-templates/full-width.php' ) )
$classes[] = 'full-width';
if ( is_page_template( 'page-templates/front-page.php' ) ) {
$classes[] = 'template-front-page';
if ( has_post_thumbnail() )
$classes[] = 'has-post-thumbnail';
if ( is_active_sidebar( 'sidebar-2' ) && is_active_sidebar( 'sidebar-3' ) )
$classes[] = 'two-sidebars';
}
if ( empty( $background_color ) )
$classes[] = 'custom-background-empty';
elseif ( in_array( $background_color, array( 'fff', 'ffffff' ) ) )
$classes[] = 'custom-background-white';
// Enable custom font class only if the font CSS is queued to load.
if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) )
$classes[] = 'custom-font-enabled';
if ( ! is_multi_author() )
$classes[] = 'single-author';
return $classes;
}
add_filter( 'body_class', 'twentytwelve_body_class' );
/**
* Adjusts content_width value for full-width and single image attachment
* templates, and when there are no active widgets in the sidebar.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_content_width() {
if ( is_page_template( 'page-templates/full-width.php' ) || is_attachment() || ! is_active_sidebar( 'sidebar-1' ) ) {
global $content_width;
$content_width = 960;
}
}
add_action( 'template_redirect', 'twentytwelve_content_width' );
/**
* Add postMessage support for site title and description for the Theme Customizer.
*
* @since Twenty Twelve 1.0
*
* @param WP_Customize_Manager $wp_customize Theme Customizer object.
* @return void
*/
function twentytwelve_customize_register( $wp_customize ) {
$wp_customize->get_setting( 'blogname' )->transport = 'postMessage';
$wp_customize->get_setting( 'blogdescription' )->transport = 'postMessage';
}
add_action( 'customize_register', 'twentytwelve_customize_register' );
/**
* Binds JS handlers to make Theme Customizer preview reload changes asynchronously.
*
* @since Twenty Twelve 1.0
*/
function twentytwelve_customize_preview_js() {
wp_enqueue_script( 'twentytwelve-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20120827', true );
}
add_action( 'customize_preview_init', 'twentytwelve_customize_preview_js' );
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