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ee20f7606b
Fixes #34884 Props davidakennedy Built from https://develop.svn.wordpress.org/trunk@38093 git-svn-id: http://core.svn.wordpress.org/trunk@38034 1a063a9b-81f0-0310-95a4-ce76da25c4cd
593 lines
19 KiB
PHP
593 lines
19 KiB
PHP
<?php
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/**
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* Twenty Thirteen functions and definitions
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*
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* Sets up the theme and provides some helper functions, which are used in the
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* theme as custom template tags. Others are attached to action and filter
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* hooks in WordPress to change core functionality.
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*
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* When using a child theme (see https://codex.wordpress.org/Theme_Development
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* and https://codex.wordpress.org/Child_Themes), you can override certain
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* functions (those wrapped in a function_exists() call) by defining them first
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* in your child theme's functions.php file. The child theme's functions.php
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* file is included before the parent theme's file, so the child theme
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* functions would be used.
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*
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* Functions that are not pluggable (not wrapped in function_exists()) are
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* instead attached to a filter or action hook.
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*
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* For more information on hooks, actions, and filters, @link https://codex.wordpress.org/Plugin_API
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*
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* @package WordPress
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* @subpackage Twenty_Thirteen
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* @since Twenty Thirteen 1.0
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*/
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/*
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* Set up the content width value based on the theme's design.
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*
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* @see twentythirteen_content_width() for template-specific adjustments.
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*/
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if ( ! isset( $content_width ) )
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$content_width = 604;
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/**
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* Add support for a custom header image.
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*/
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require get_template_directory() . '/inc/custom-header.php';
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/**
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* Twenty Thirteen only works in WordPress 3.6 or later.
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*/
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if ( version_compare( $GLOBALS['wp_version'], '3.6-alpha', '<' ) )
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require get_template_directory() . '/inc/back-compat.php';
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/**
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* Twenty Thirteen setup.
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*
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* Sets up theme defaults and registers the various WordPress features that
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* Twenty Thirteen supports.
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*
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* @uses load_theme_textdomain() For translation/localization support.
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* @uses add_editor_style() To add Visual Editor stylesheets.
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* @uses add_theme_support() To add support for automatic feed links, post
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* formats, and post thumbnails.
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* @uses register_nav_menu() To add support for a navigation menu.
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* @uses set_post_thumbnail_size() To set a custom post thumbnail size.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_setup() {
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/*
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* Makes Twenty Thirteen available for translation.
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*
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* Translations can be filed at WordPress.org. See: https://translate.wordpress.org/projects/wp-themes/twentythirteen
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* If you're building a theme based on Twenty Thirteen, use a find and
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* replace to change 'twentythirteen' to the name of your theme in all
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* template files.
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*/
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load_theme_textdomain( 'twentythirteen' );
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/*
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* This theme styles the visual editor to resemble the theme style,
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* specifically font, colors, icons, and column width.
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*/
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add_editor_style( array( 'css/editor-style.css', 'genericons/genericons.css', twentythirteen_fonts_url() ) );
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// Adds RSS feed links to <head> for posts and comments.
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add_theme_support( 'automatic-feed-links' );
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/*
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* Switches default core markup for search form, comment form,
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* and comments to output valid HTML5.
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*/
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add_theme_support( 'html5', array(
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'search-form', 'comment-form', 'comment-list', 'gallery', 'caption'
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) );
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/*
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* This theme supports all available post formats by default.
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* See https://codex.wordpress.org/Post_Formats
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*/
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add_theme_support( 'post-formats', array(
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'aside', 'audio', 'chat', 'gallery', 'image', 'link', 'quote', 'status', 'video'
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) );
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// This theme uses wp_nav_menu() in one location.
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register_nav_menu( 'primary', __( 'Navigation Menu', 'twentythirteen' ) );
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/*
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* This theme uses a custom image size for featured images, displayed on
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* "standard" posts and pages.
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*/
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add_theme_support( 'post-thumbnails' );
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set_post_thumbnail_size( 604, 270, true );
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// This theme uses its own gallery styles.
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add_filter( 'use_default_gallery_style', '__return_false' );
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// Indicate widget sidebars can use selective refresh in the Customizer.
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add_theme_support( 'customize-selective-refresh-widgets' );
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}
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add_action( 'after_setup_theme', 'twentythirteen_setup' );
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/**
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* Return the Google font stylesheet URL, if available.
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*
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* The use of Source Sans Pro and Bitter by default is localized. For languages
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* that use characters not supported by the font, the font can be disabled.
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*
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* @since Twenty Thirteen 1.0
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*
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* @return string Font stylesheet or empty string if disabled.
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*/
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function twentythirteen_fonts_url() {
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$fonts_url = '';
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/* Translators: If there are characters in your language that are not
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* supported by Source Sans Pro, translate this to 'off'. Do not translate
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* into your own language.
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*/
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$source_sans_pro = _x( 'on', 'Source Sans Pro font: on or off', 'twentythirteen' );
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/* Translators: If there are characters in your language that are not
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* supported by Bitter, translate this to 'off'. Do not translate into your
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* own language.
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*/
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$bitter = _x( 'on', 'Bitter font: on or off', 'twentythirteen' );
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if ( 'off' !== $source_sans_pro || 'off' !== $bitter ) {
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$font_families = array();
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if ( 'off' !== $source_sans_pro )
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$font_families[] = 'Source Sans Pro:300,400,700,300italic,400italic,700italic';
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if ( 'off' !== $bitter )
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$font_families[] = 'Bitter:400,700';
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$query_args = array(
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'family' => urlencode( implode( '|', $font_families ) ),
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'subset' => urlencode( 'latin,latin-ext' ),
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);
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$fonts_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' );
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}
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return $fonts_url;
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}
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/**
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* Enqueue scripts and styles for the front end.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_scripts_styles() {
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/*
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* Adds JavaScript to pages with the comment form to support
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* sites with threaded comments (when in use).
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*/
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if ( is_singular() && comments_open() && get_option( 'thread_comments' ) )
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wp_enqueue_script( 'comment-reply' );
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// Adds Masonry to handle vertical alignment of footer widgets.
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if ( is_active_sidebar( 'sidebar-1' ) )
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wp_enqueue_script( 'jquery-masonry' );
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// Loads JavaScript file with functionality specific to Twenty Thirteen.
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wp_enqueue_script( 'twentythirteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20160717', true );
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// Add Source Sans Pro and Bitter fonts, used in the main stylesheet.
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wp_enqueue_style( 'twentythirteen-fonts', twentythirteen_fonts_url(), array(), null );
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// Add Genericons font, used in the main stylesheet.
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wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.03' );
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// Loads our main stylesheet.
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wp_enqueue_style( 'twentythirteen-style', get_stylesheet_uri(), array(), '2013-07-18' );
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// Loads the Internet Explorer specific stylesheet.
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wp_enqueue_style( 'twentythirteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentythirteen-style' ), '2013-07-18' );
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wp_style_add_data( 'twentythirteen-ie', 'conditional', 'lt IE 9' );
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}
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add_action( 'wp_enqueue_scripts', 'twentythirteen_scripts_styles' );
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/**
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* Filter the page title.
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*
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* Creates a nicely formatted and more specific title element text for output
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* in head of document, based on current view.
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*
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* @since Twenty Thirteen 1.0
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*
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* @param string $title Default title text for current view.
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* @param string $sep Optional separator.
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* @return string The filtered title.
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*/
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function twentythirteen_wp_title( $title, $sep ) {
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global $paged, $page;
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if ( is_feed() )
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return $title;
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// Add the site name.
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$title .= get_bloginfo( 'name', 'display' );
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// Add the site description for the home/front page.
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$site_description = get_bloginfo( 'description', 'display' );
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if ( $site_description && ( is_home() || is_front_page() ) )
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$title = "$title $sep $site_description";
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// Add a page number if necessary.
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if ( ( $paged >= 2 || $page >= 2 ) && ! is_404() )
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$title = "$title $sep " . sprintf( __( 'Page %s', 'twentythirteen' ), max( $paged, $page ) );
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return $title;
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}
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add_filter( 'wp_title', 'twentythirteen_wp_title', 10, 2 );
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/**
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* Register two widget areas.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_widgets_init() {
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register_sidebar( array(
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'name' => __( 'Main Widget Area', 'twentythirteen' ),
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'id' => 'sidebar-1',
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'description' => __( 'Appears in the footer section of the site.', 'twentythirteen' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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) );
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register_sidebar( array(
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'name' => __( 'Secondary Widget Area', 'twentythirteen' ),
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'id' => 'sidebar-2',
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'description' => __( 'Appears on posts and pages in the sidebar.', 'twentythirteen' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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) );
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}
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add_action( 'widgets_init', 'twentythirteen_widgets_init' );
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if ( ! function_exists( 'twentythirteen_paging_nav' ) ) :
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/**
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* Display navigation to next/previous set of posts when applicable.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_paging_nav() {
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global $wp_query;
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// Don't print empty markup if there's only one page.
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if ( $wp_query->max_num_pages < 2 )
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return;
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?>
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<nav class="navigation paging-navigation" role="navigation">
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<h1 class="screen-reader-text"><?php _e( 'Posts navigation', 'twentythirteen' ); ?></h1>
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<div class="nav-links">
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<?php if ( get_next_posts_link() ) : ?>
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<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'twentythirteen' ) ); ?></div>
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<?php endif; ?>
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<?php if ( get_previous_posts_link() ) : ?>
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<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→</span>', 'twentythirteen' ) ); ?></div>
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<?php endif; ?>
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</div><!-- .nav-links -->
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</nav><!-- .navigation -->
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<?php
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}
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endif;
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if ( ! function_exists( 'twentythirteen_post_nav' ) ) :
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/**
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* Display navigation to next/previous post when applicable.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_post_nav() {
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global $post;
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// Don't print empty markup if there's nowhere to navigate.
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$previous = ( is_attachment() ) ? get_post( $post->post_parent ) : get_adjacent_post( false, '', true );
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$next = get_adjacent_post( false, '', false );
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if ( ! $next && ! $previous )
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return;
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?>
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<nav class="navigation post-navigation" role="navigation">
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<h1 class="screen-reader-text"><?php _e( 'Post navigation', 'twentythirteen' ); ?></h1>
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<div class="nav-links">
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<?php previous_post_link( '%link', _x( '<span class="meta-nav">←</span> %title', 'Previous post link', 'twentythirteen' ) ); ?>
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<?php next_post_link( '%link', _x( '%title <span class="meta-nav">→</span>', 'Next post link', 'twentythirteen' ) ); ?>
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</div><!-- .nav-links -->
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</nav><!-- .navigation -->
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<?php
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}
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endif;
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if ( ! function_exists( 'twentythirteen_entry_meta' ) ) :
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/**
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* Print HTML with meta information for current post: categories, tags, permalink, author, and date.
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*
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* Create your own twentythirteen_entry_meta() to override in a child theme.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_entry_meta() {
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if ( is_sticky() && is_home() && ! is_paged() )
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echo '<span class="featured-post">' . esc_html__( 'Sticky', 'twentythirteen' ) . '</span>';
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if ( ! has_post_format( 'link' ) && 'post' == get_post_type() )
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twentythirteen_entry_date();
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// Translators: used between list items, there is a space after the comma.
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$categories_list = get_the_category_list( __( ', ', 'twentythirteen' ) );
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if ( $categories_list ) {
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echo '<span class="categories-links">' . $categories_list . '</span>';
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}
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// Translators: used between list items, there is a space after the comma.
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$tag_list = get_the_tag_list( '', __( ', ', 'twentythirteen' ) );
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if ( $tag_list ) {
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echo '<span class="tags-links">' . $tag_list . '</span>';
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}
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// Post author
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if ( 'post' == get_post_type() ) {
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printf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>',
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esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
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esc_attr( sprintf( __( 'View all posts by %s', 'twentythirteen' ), get_the_author() ) ),
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get_the_author()
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);
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}
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}
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endif;
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if ( ! function_exists( 'twentythirteen_entry_date' ) ) :
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/**
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* Print HTML with date information for current post.
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*
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* Create your own twentythirteen_entry_date() to override in a child theme.
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*
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* @since Twenty Thirteen 1.0
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*
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* @param boolean $echo (optional) Whether to echo the date. Default true.
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* @return string The HTML-formatted post date.
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*/
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function twentythirteen_entry_date( $echo = true ) {
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if ( has_post_format( array( 'chat', 'status' ) ) )
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$format_prefix = _x( '%1$s on %2$s', '1: post format name. 2: date', 'twentythirteen' );
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else
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$format_prefix = '%2$s';
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$date = sprintf( '<span class="date"><a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a></span>',
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esc_url( get_permalink() ),
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esc_attr( sprintf( __( 'Permalink to %s', 'twentythirteen' ), the_title_attribute( 'echo=0' ) ) ),
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esc_attr( get_the_date( 'c' ) ),
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esc_html( sprintf( $format_prefix, get_post_format_string( get_post_format() ), get_the_date() ) )
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);
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if ( $echo )
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echo $date;
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return $date;
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}
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endif;
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if ( ! function_exists( 'twentythirteen_the_attached_image' ) ) :
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/**
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* Print the attached image with a link to the next attached image.
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*
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* @since Twenty Thirteen 1.0
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*/
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function twentythirteen_the_attached_image() {
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/**
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* Filter the image attachment size to use.
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*
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* @since Twenty thirteen 1.0
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*
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* @param array $size {
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* @type int The attachment height in pixels.
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* @type int The attachment width in pixels.
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* }
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*/
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$attachment_size = apply_filters( 'twentythirteen_attachment_size', array( 724, 724 ) );
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$next_attachment_url = wp_get_attachment_url();
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$post = get_post();
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/*
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* Grab the IDs of all the image attachments in a gallery so we can get the URL
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* of the next adjacent image in a gallery, or the first image (if we're
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* looking at the last image in a gallery), or, in a gallery of one, just the
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* link to that image file.
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*/
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$attachment_ids = get_posts( array(
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'post_parent' => $post->post_parent,
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'fields' => 'ids',
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'numberposts' => -1,
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'post_status' => 'inherit',
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'post_type' => 'attachment',
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'post_mime_type' => 'image',
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'order' => 'ASC',
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'orderby' => 'menu_order ID',
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) );
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// If there is more than 1 attachment in a gallery...
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if ( count( $attachment_ids ) > 1 ) {
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foreach ( $attachment_ids as $idx => $attachment_id ) {
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if ( $attachment_id == $post->ID ) {
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$next_id = $attachment_ids[ ( $idx + 1 ) % count( $attachment_ids ) ];
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break;
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}
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}
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// get the URL of the next image attachment...
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if ( $next_id )
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$next_attachment_url = get_attachment_link( $next_id );
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// or get the URL of the first image attachment.
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else
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$next_attachment_url = get_attachment_link( reset( $attachment_ids ) );
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}
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printf( '<a href="%1$s" title="%2$s" rel="attachment">%3$s</a>',
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esc_url( $next_attachment_url ),
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the_title_attribute( array( 'echo' => false ) ),
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wp_get_attachment_image( $post->ID, $attachment_size )
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);
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}
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endif;
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/**
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* Return the post URL.
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*
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* @uses get_url_in_content() to get the URL in the post meta (if it exists) or
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* the first link found in the post content.
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*
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* Falls back to the post permalink if no URL is found in the post.
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*
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* @since Twenty Thirteen 1.0
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*
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* @return string The Link format URL.
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*/
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function twentythirteen_get_link_url() {
|
|
$content = get_the_content();
|
|
$has_url = get_url_in_content( $content );
|
|
|
|
return ( $has_url ) ? $has_url : apply_filters( 'the_permalink', get_permalink() );
|
|
}
|
|
|
|
if ( ! function_exists( 'twentythirteen_excerpt_more' ) && ! is_admin() ) :
|
|
/**
|
|
* Replaces "[...]" (appended to automatically generated excerpts) with ...
|
|
* and a Continue reading link.
|
|
*
|
|
* @since Twenty Thirteen 1.4
|
|
*
|
|
* @param string $more Default Read More excerpt link.
|
|
* @return string Filtered Read More excerpt link.
|
|
*/
|
|
function twentythirteen_excerpt_more( $more ) {
|
|
$link = sprintf( '<a href="%1$s" class="more-link">%2$s</a>',
|
|
esc_url( get_permalink( get_the_ID() ) ),
|
|
/* translators: %s: Name of current post */
|
|
sprintf( __( 'Continue reading %s <span class="meta-nav">→</span>', 'twentythirteen' ), '<span class="screen-reader-text">' . get_the_title( get_the_ID() ) . '</span>' )
|
|
);
|
|
return ' … ' . $link;
|
|
}
|
|
add_filter( 'excerpt_more', 'twentythirteen_excerpt_more' );
|
|
endif;
|
|
|
|
/**
|
|
* Extend the default WordPress body classes.
|
|
*
|
|
* Adds body classes to denote:
|
|
* 1. Single or multiple authors.
|
|
* 2. Active widgets in the sidebar to change the layout and spacing.
|
|
* 3. When avatars are disabled in discussion settings.
|
|
*
|
|
* @since Twenty Thirteen 1.0
|
|
*
|
|
* @param array $classes A list of existing body class values.
|
|
* @return array The filtered body class list.
|
|
*/
|
|
function twentythirteen_body_class( $classes ) {
|
|
if ( ! is_multi_author() )
|
|
$classes[] = 'single-author';
|
|
|
|
if ( is_active_sidebar( 'sidebar-2' ) && ! is_attachment() && ! is_404() )
|
|
$classes[] = 'sidebar';
|
|
|
|
if ( ! get_option( 'show_avatars' ) )
|
|
$classes[] = 'no-avatars';
|
|
|
|
return $classes;
|
|
}
|
|
add_filter( 'body_class', 'twentythirteen_body_class' );
|
|
|
|
/**
|
|
* Adjust content_width value for video post formats and attachment templates.
|
|
*
|
|
* @since Twenty Thirteen 1.0
|
|
*/
|
|
function twentythirteen_content_width() {
|
|
global $content_width;
|
|
|
|
if ( is_attachment() )
|
|
$content_width = 724;
|
|
elseif ( has_post_format( 'audio' ) )
|
|
$content_width = 484;
|
|
}
|
|
add_action( 'template_redirect', 'twentythirteen_content_width' );
|
|
|
|
/**
|
|
* Add postMessage support for site title and description for the Customizer.
|
|
*
|
|
* @since Twenty Thirteen 1.0
|
|
*
|
|
* @param WP_Customize_Manager $wp_customize Customizer object.
|
|
*/
|
|
function twentythirteen_customize_register( $wp_customize ) {
|
|
$wp_customize->get_setting( 'blogname' )->transport = 'postMessage';
|
|
$wp_customize->get_setting( 'blogdescription' )->transport = 'postMessage';
|
|
$wp_customize->get_setting( 'header_textcolor' )->transport = 'postMessage';
|
|
|
|
if ( isset( $wp_customize->selective_refresh ) ) {
|
|
$wp_customize->selective_refresh->add_partial( 'blogname', array(
|
|
'selector' => '.site-title',
|
|
'container_inclusive' => false,
|
|
'render_callback' => 'twentythirteen_customize_partial_blogname',
|
|
) );
|
|
$wp_customize->selective_refresh->add_partial( 'blogdescription', array(
|
|
'selector' => '.site-description',
|
|
'container_inclusive' => false,
|
|
'render_callback' => 'twentythirteen_customize_partial_blogdescription',
|
|
) );
|
|
}
|
|
}
|
|
add_action( 'customize_register', 'twentythirteen_customize_register' );
|
|
|
|
/**
|
|
* Render the site title for the selective refresh partial.
|
|
*
|
|
* @since Twenty Thirteen 1.9
|
|
* @see twentythirteen_customize_register()
|
|
*
|
|
* @return void
|
|
*/
|
|
function twentythirteen_customize_partial_blogname() {
|
|
bloginfo( 'name' );
|
|
}
|
|
|
|
/**
|
|
* Render the site tagline for the selective refresh partial.
|
|
*
|
|
* @since Twenty Thirteen 1.9
|
|
* @see twentythirteen_customize_register()
|
|
*
|
|
* @return void
|
|
*/
|
|
function twentythirteen_customize_partial_blogdescription() {
|
|
bloginfo( 'description' );
|
|
}
|
|
|
|
/**
|
|
* Enqueue Javascript postMessage handlers for the Customizer.
|
|
*
|
|
* Binds JavaScript handlers to make the Customizer preview
|
|
* reload changes asynchronously.
|
|
*
|
|
* @since Twenty Thirteen 1.0
|
|
*/
|
|
function twentythirteen_customize_preview_js() {
|
|
wp_enqueue_script( 'twentythirteen-customizer', get_template_directory_uri() . '/js/theme-customizer.js', array( 'customize-preview' ), '20141120', true );
|
|
}
|
|
add_action( 'customize_preview_init', 'twentythirteen_customize_preview_js' );
|