687 lines
22 KiB
PHP
687 lines
22 KiB
PHP
<?php
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/**
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* Twenty Twelve functions and definitions
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*
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* Sets up the theme and provides some helper functions, which are used
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* in the theme as custom template tags. Others are attached to action and
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* filter 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 and
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* https://codex.wordpress.org/Child_Themes), you can override certain functions
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* (those wrapped in a function_exists() call) by defining them first in your child theme's
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* functions.php file. The child theme's functions.php file is included before the parent
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* theme's file, so the child theme functions would be used.
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*
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* Functions that are not pluggable (not wrapped in function_exists()) are instead attached
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* 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_Twelve
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* @since Twenty Twelve 1.0
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*/
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// Set up the content width value based on the theme's design and stylesheet.
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if ( ! isset( $content_width ) ) {
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$content_width = 625;
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}
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/**
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* Twenty Twelve 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 Twelve 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 a Visual Editor stylesheet.
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* @uses add_theme_support() To add support for post thumbnails, automatic feed links,
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* custom background, and post formats.
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* @uses register_nav_menu() To add support for navigation menus.
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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 Twelve 1.0
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*/
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function twentytwelve_setup() {
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/*
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* Makes Twenty Twelve 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/twentytwelve
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* If you're building a theme based on Twenty Twelve, use a find and replace
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* to change 'twentytwelve' to the name of your theme in all the template files.
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*/
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load_theme_textdomain( 'twentytwelve' );
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// This theme styles the visual editor with editor-style.css to match the theme style.
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add_editor_style();
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// Load regular editor styles into the new block-based editor.
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add_theme_support( 'editor-styles' );
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// Load default block styles.
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add_theme_support( 'wp-block-styles' );
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// Add support for responsive embeds.
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add_theme_support( 'responsive-embeds' );
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// Add support for custom color scheme.
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add_theme_support(
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'editor-color-palette',
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array(
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array(
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'name' => __( 'Blue', 'twentytwelve' ),
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'slug' => 'blue',
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'color' => '#21759b',
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),
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array(
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'name' => __( 'Dark Gray', 'twentytwelve' ),
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'slug' => 'dark-gray',
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'color' => '#444',
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),
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array(
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'name' => __( 'Medium Gray', 'twentytwelve' ),
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'slug' => 'medium-gray',
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'color' => '#9f9f9f',
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),
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array(
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'name' => __( 'Light Gray', 'twentytwelve' ),
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'slug' => 'light-gray',
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'color' => '#e6e6e6',
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),
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array(
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'name' => __( 'White', 'twentytwelve' ),
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'slug' => 'white',
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'color' => '#fff',
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),
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)
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);
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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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// This theme supports a variety of post formats.
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add_theme_support( 'post-formats', array( 'aside', 'image', 'link', 'quote', 'status' ) );
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// This theme uses wp_nav_menu() in one location.
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register_nav_menu( 'primary', __( 'Primary Menu', 'twentytwelve' ) );
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/*
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* This theme supports custom background color and image,
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* and here we also set up the default background color.
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*/
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add_theme_support(
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'custom-background',
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array(
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'default-color' => 'e6e6e6',
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)
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);
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// This theme uses a custom image size for featured images, displayed on "standard" posts.
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add_theme_support( 'post-thumbnails' );
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set_post_thumbnail_size( 624, 9999 ); // Unlimited height, soft crop
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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', 'twentytwelve_setup' );
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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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* Return the Google font stylesheet URL if available.
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*
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* The use of Open Sans by default is localized. For languages that use
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* characters not supported by the font, the font can be disabled.
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*
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* @since Twenty Twelve 1.2
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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 twentytwelve_get_font_url() {
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$font_url = '';
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/* translators: If there are characters in your language that are not supported
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* by Open Sans, translate this to 'off'. Do not translate into your own language.
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*/
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if ( 'off' !== _x( 'on', 'Open Sans font: on or off', 'twentytwelve' ) ) {
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$subsets = 'latin,latin-ext';
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/* translators: To add an additional Open Sans character subset specific to your language,
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* translate this to 'greek', 'cyrillic' or 'vietnamese'. Do not translate into your own language.
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*/
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$subset = _x( 'no-subset', 'Open Sans font: add new subset (greek, cyrillic, vietnamese)', 'twentytwelve' );
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if ( 'cyrillic' == $subset ) {
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$subsets .= ',cyrillic,cyrillic-ext';
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} elseif ( 'greek' == $subset ) {
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$subsets .= ',greek,greek-ext';
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} elseif ( 'vietnamese' == $subset ) {
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$subsets .= ',vietnamese';
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}
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$query_args = array(
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'family' => 'Open+Sans:400italic,700italic,400,700',
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'subset' => $subsets,
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);
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$font_url = add_query_arg( $query_args, 'https://fonts.googleapis.com/css' );
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}
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return $font_url;
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}
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/**
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* Enqueue scripts and styles for front end.
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*
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* @since Twenty Twelve 1.0
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*/
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function twentytwelve_scripts_styles() {
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global $wp_styles;
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/*
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* Adds JavaScript to pages with the comment form to support
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* sites with threaded comments (when in use).
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*/
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if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
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wp_enqueue_script( 'comment-reply' );
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}
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// Adds JavaScript for handling the navigation menu hide-and-show behavior.
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wp_enqueue_script( 'twentytwelve-navigation', get_template_directory_uri() . '/js/navigation.js', array( 'jquery' ), '20140711', true );
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$font_url = twentytwelve_get_font_url();
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if ( ! empty( $font_url ) ) {
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wp_enqueue_style( 'twentytwelve-fonts', esc_url_raw( $font_url ), array(), null );
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}
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// Loads our main stylesheet.
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wp_enqueue_style( 'twentytwelve-style', get_stylesheet_uri() );
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// Theme block stylesheet.
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wp_enqueue_style( 'twentytwelve-block-style', get_template_directory_uri() . '/css/blocks.css', array( 'twentytwelve-style' ), '20181230' );
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// Loads the Internet Explorer specific stylesheet.
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wp_enqueue_style( 'twentytwelve-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentytwelve-style' ), '20121010' );
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$wp_styles->add_data( 'twentytwelve-ie', 'conditional', 'lt IE 9' );
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}
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add_action( 'wp_enqueue_scripts', 'twentytwelve_scripts_styles' );
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/**
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* Enqueue styles for the block-based editor.
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*
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* @since Twenty Twelve 2.6
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*/
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function twentytwelve_block_editor_styles() {
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// Block styles.
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wp_enqueue_style( 'twentytwelve-block-editor-style', get_template_directory_uri() . '/css/editor-blocks.css', array(), '20181230' );
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// Add custom fonts.
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wp_enqueue_style( 'twentytwelve-fonts', twentytwelve_get_font_url(), array(), null );
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}
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add_action( 'enqueue_block_editor_assets', 'twentytwelve_block_editor_styles' );
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/**
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* Add preconnect for Google Fonts.
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*
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* @since Twenty Twelve 2.2
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*
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* @param array $urls URLs to print for resource hints.
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* @param string $relation_type The relation type the URLs are printed.
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* @return array URLs to print for resource hints.
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*/
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function twentytwelve_resource_hints( $urls, $relation_type ) {
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if ( wp_style_is( 'twentytwelve-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
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if ( version_compare( $GLOBALS['wp_version'], '4.7-alpha', '>=' ) ) {
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$urls[] = array(
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'href' => 'https://fonts.gstatic.com',
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'crossorigin',
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);
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} else {
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$urls[] = 'https://fonts.gstatic.com';
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}
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}
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return $urls;
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}
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add_filter( 'wp_resource_hints', 'twentytwelve_resource_hints', 10, 2 );
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/**
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* Filter TinyMCE CSS path to include Google Fonts.
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*
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* Adds additional stylesheets to the TinyMCE editor if needed.
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*
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* @uses twentytwelve_get_font_url() To get the Google Font stylesheet URL.
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*
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* @since Twenty Twelve 1.2
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*
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* @param string $mce_css CSS path to load in TinyMCE.
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* @return string Filtered CSS path.
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*/
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function twentytwelve_mce_css( $mce_css ) {
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$font_url = twentytwelve_get_font_url();
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if ( empty( $font_url ) ) {
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return $mce_css;
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}
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if ( ! empty( $mce_css ) ) {
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$mce_css .= ',';
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}
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$mce_css .= esc_url_raw( str_replace( ',', '%2C', $font_url ) );
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return $mce_css;
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}
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add_filter( 'mce_css', 'twentytwelve_mce_css' );
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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
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* for output in head of document, based on current view.
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*
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* @since Twenty Twelve 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 Filtered title.
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*/
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function twentytwelve_wp_title( $title, $sep ) {
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global $paged, $page;
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if ( is_feed() ) {
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return $title;
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}
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// Add the site name.
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$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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}
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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', 'twentytwelve' ), max( $paged, $page ) );
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}
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return $title;
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}
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add_filter( 'wp_title', 'twentytwelve_wp_title', 10, 2 );
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/**
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* Filter the page menu arguments.
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*
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* Makes our wp_nav_menu() fallback -- wp_page_menu() -- show a home link.
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*
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* @since Twenty Twelve 1.0
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*/
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function twentytwelve_page_menu_args( $args ) {
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if ( ! isset( $args['show_home'] ) ) {
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$args['show_home'] = true;
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}
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return $args;
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}
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add_filter( 'wp_page_menu_args', 'twentytwelve_page_menu_args' );
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/**
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* Register sidebars.
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*
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* Registers our main widget area and the front page widget areas.
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*
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* @since Twenty Twelve 1.0
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*/
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function twentytwelve_widgets_init() {
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register_sidebar(
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array(
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'name' => __( 'Main Sidebar', 'twentytwelve' ),
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'id' => 'sidebar-1',
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'description' => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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)
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);
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register_sidebar(
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array(
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'name' => __( 'First Front Page Widget Area', 'twentytwelve' ),
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'id' => 'sidebar-2',
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'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => '</aside>',
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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)
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);
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register_sidebar(
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array(
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'name' => __( 'Second Front Page Widget Area', 'twentytwelve' ),
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'id' => 'sidebar-3',
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'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ),
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'before_widget' => '<aside id="%1$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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}
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add_action( 'widgets_init', 'twentytwelve_widgets_init' );
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if ( ! function_exists( 'twentytwelve_content_nav' ) ) :
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/**
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* Displays navigation to next/previous pages when applicable.
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*
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* @since Twenty Twelve 1.0
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*/
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function twentytwelve_content_nav( $html_id ) {
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global $wp_query;
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if ( $wp_query->max_num_pages > 1 ) : ?>
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<nav id="<?php echo esc_attr( $html_id ); ?>" class="navigation" role="navigation">
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<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
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<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'twentytwelve' ) ); ?></div>
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<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→</span>', 'twentytwelve' ) ); ?></div>
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</nav><!-- .navigation -->
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<?php
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endif;
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}
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endif;
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if ( ! function_exists( 'twentytwelve_comment' ) ) :
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/**
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* Template for comments and pingbacks.
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*
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* To override this walker in a child theme without modifying the comments template
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* simply create your own twentytwelve_comment(), and that function will be used instead.
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*
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* Used as a callback by wp_list_comments() for displaying the comments.
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*
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* @since Twenty Twelve 1.0
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*/
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function twentytwelve_comment( $comment, $args, $depth ) {
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$GLOBALS['comment'] = $comment;
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switch ( $comment->comment_type ) :
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case 'pingback':
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case 'trackback':
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// Display trackbacks differently than normal comments.
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?>
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<li <?php comment_class(); ?> id="comment-<?php comment_ID(); ?>">
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<p><?php _e( 'Pingback:', 'twentytwelve' ); ?> <?php comment_author_link(); ?> <?php edit_comment_link( __( '(Edit)', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?></p>
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<?php
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break;
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default:
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// Proceed with normal comments.
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global $post;
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?>
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<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
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<article id="comment-<?php comment_ID(); ?>" class="comment">
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<header class="comment-meta comment-author vcard">
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<?php
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echo get_avatar( $comment, 44 );
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printf(
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'<cite><b class="fn">%1$s</b> %2$s</cite>',
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get_comment_author_link(),
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// If current post author is also comment author, make it known visually.
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( $comment->user_id === $post->post_author ) ? '<span>' . __( 'Post author', 'twentytwelve' ) . '</span>' : ''
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);
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printf(
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'<a href="%1$s"><time datetime="%2$s">%3$s</time></a>',
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esc_url( get_comment_link( $comment->comment_ID ) ),
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get_comment_time( 'c' ),
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/* translators: 1: date, 2: time */
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sprintf( __( '%1$s at %2$s', 'twentytwelve' ), get_comment_date(), get_comment_time() )
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);
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?>
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</header><!-- .comment-meta -->
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<?php if ( '0' == $comment->comment_approved ) : ?>
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<p class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'twentytwelve' ); ?></p>
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<?php endif; ?>
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<section class="comment-content comment">
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<?php comment_text(); ?>
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<?php edit_comment_link( __( 'Edit', 'twentytwelve' ), '<p class="edit-link">', '</p>' ); ?>
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</section><!-- .comment-content -->
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<div class="reply">
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<?php
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comment_reply_link(
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array_merge(
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$args,
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array(
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'reply_text' => __( 'Reply', 'twentytwelve' ),
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'after' => ' <span>↓</span>',
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'depth' => $depth,
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'max_depth' => $args['max_depth'],
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)
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)
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);
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?>
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</div><!-- .reply -->
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</article><!-- #comment-## -->
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<?php
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break;
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endswitch; // end comment_type check
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}
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endif;
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if ( ! function_exists( 'twentytwelve_entry_meta' ) ) :
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/**
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* Set up post 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">%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;
|
|
|
|
/**
|
|
* Extend the default WordPress body classes.
|
|
*
|
|
* 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 $classes Existing class values.
|
|
* @return array Filtered class values.
|
|
*/
|
|
function twentytwelve_body_class( $classes ) {
|
|
$background_color = get_background_color();
|
|
$background_image = get_background_image();
|
|
|
|
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_image ) ) {
|
|
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' );
|
|
|
|
/**
|
|
* Adjust content width in certain contexts.
|
|
*
|
|
* 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' );
|
|
|
|
/**
|
|
* Register postMessage support.
|
|
*
|
|
* Add postMessage support for site title and description for the Customizer.
|
|
*
|
|
* @since Twenty Twelve 1.0
|
|
*
|
|
* @param WP_Customize_Manager $wp_customize Customizer object.
|
|
*/
|
|
function twentytwelve_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 > a',
|
|
'container_inclusive' => false,
|
|
'render_callback' => 'twentytwelve_customize_partial_blogname',
|
|
)
|
|
);
|
|
$wp_customize->selective_refresh->add_partial(
|
|
'blogdescription',
|
|
array(
|
|
'selector' => '.site-description',
|
|
'container_inclusive' => false,
|
|
'render_callback' => 'twentytwelve_customize_partial_blogdescription',
|
|
)
|
|
);
|
|
}
|
|
}
|
|
add_action( 'customize_register', 'twentytwelve_customize_register' );
|
|
|
|
/**
|
|
* Render the site title for the selective refresh partial.
|
|
*
|
|
* @since Twenty Twelve 2.0
|
|
* @see twentytwelve_customize_register()
|
|
*
|
|
* @return void
|
|
*/
|
|
function twentytwelve_customize_partial_blogname() {
|
|
bloginfo( 'name' );
|
|
}
|
|
|
|
/**
|
|
* Render the site tagline for the selective refresh partial.
|
|
*
|
|
* @since Twenty Twelve 2.0
|
|
* @see twentytwelve_customize_register()
|
|
*
|
|
* @return void
|
|
*/
|
|
function twentytwelve_customize_partial_blogdescription() {
|
|
bloginfo( 'description' );
|
|
}
|
|
|
|
/**
|
|
* Enqueue Javascript postMessage handlers for the Customizer.
|
|
*
|
|
* Binds JS handlers to make the 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' ), '20141120', true );
|
|
}
|
|
add_action( 'customize_preview_init', 'twentytwelve_customize_preview_js' );
|
|
|
|
|
|
/**
|
|
* Modifies tag cloud widget arguments to display all tags in the same font size
|
|
* and use list format for better accessibility.
|
|
*
|
|
* @since Twenty Twelve 2.4
|
|
*
|
|
* @param array $args Arguments for tag cloud widget.
|
|
* @return array The filtered arguments for tag cloud widget.
|
|
*/
|
|
function twentytwelve_widget_tag_cloud_args( $args ) {
|
|
$args['largest'] = 22;
|
|
$args['smallest'] = 8;
|
|
$args['unit'] = 'pt';
|
|
$args['format'] = 'list';
|
|
|
|
return $args;
|
|
}
|
|
add_filter( 'widget_tag_cloud_args', 'twentytwelve_widget_tag_cloud_args' );
|