wp/wp-content/themes/twentyfourteen/functions.php
changeset 5 5e2f62d02dcd
child 7 cf61fcea0001
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-content/themes/twentyfourteen/functions.php	Tue Jun 09 03:35:32 2015 +0200
@@ -0,0 +1,519 @@
+<?php
+/**
+ * Twenty Fourteen functions and definitions
+ *
+ * Set 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 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.
+ *
+ * @link https://codex.wordpress.org/Theme_Development
+ * @link https://codex.wordpress.org/Child_Themes
+ *
+ * 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,
+ * @link https://codex.wordpress.org/Plugin_API
+ *
+ * @package WordPress
+ * @subpackage Twenty_Fourteen
+ * @since Twenty Fourteen 1.0
+ */
+
+/**
+ * Set up the content width value based on the theme's design.
+ *
+ * @see twentyfourteen_content_width()
+ *
+ * @since Twenty Fourteen 1.0
+ */
+if ( ! isset( $content_width ) ) {
+	$content_width = 474;
+}
+
+/**
+ * Twenty Fourteen only works in WordPress 3.6 or later.
+ */
+if ( version_compare( $GLOBALS['wp_version'], '3.6', '<' ) ) {
+	require get_template_directory() . '/inc/back-compat.php';
+}
+
+if ( ! function_exists( 'twentyfourteen_setup' ) ) :
+/**
+ * Twenty Fourteen setup.
+ *
+ * Set up theme defaults and registers support for various WordPress features.
+ *
+ * Note that this function is hooked into the after_setup_theme hook, which
+ * runs before the init hook. The init hook is too late for some features, such
+ * as indicating support post thumbnails.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_setup() {
+
+	/*
+	 * Make Twenty Fourteen available for translation.
+	 *
+	 * Translations can be added to the /languages/ directory.
+	 * If you're building a theme based on Twenty Fourteen, use a find and
+	 * replace to change 'twentyfourteen' to the name of your theme in all
+	 * template files.
+	 */
+	load_theme_textdomain( 'twentyfourteen', get_template_directory() . '/languages' );
+
+	// This theme styles the visual editor to resemble the theme style.
+	add_editor_style( array( 'css/editor-style.css', twentyfourteen_font_url(), 'genericons/genericons.css' ) );
+
+	// Add RSS feed links to <head> for posts and comments.
+	add_theme_support( 'automatic-feed-links' );
+
+	// Enable support for Post Thumbnails, and declare two sizes.
+	add_theme_support( 'post-thumbnails' );
+	set_post_thumbnail_size( 672, 372, true );
+	add_image_size( 'twentyfourteen-full-width', 1038, 576, true );
+
+	// This theme uses wp_nav_menu() in two locations.
+	register_nav_menus( array(
+		'primary'   => __( 'Top primary menu', 'twentyfourteen' ),
+		'secondary' => __( 'Secondary menu in left sidebar', 'twentyfourteen' ),
+	) );
+
+	/*
+	 * Switch default core markup for search form, comment form, and comments
+	 * to output valid HTML5.
+	 */
+	add_theme_support( 'html5', array(
+		'search-form', 'comment-form', 'comment-list', 'gallery', 'caption'
+	) );
+
+	/*
+	 * Enable support for Post Formats.
+	 * See https://codex.wordpress.org/Post_Formats
+	 */
+	add_theme_support( 'post-formats', array(
+		'aside', 'image', 'video', 'audio', 'quote', 'link', 'gallery',
+	) );
+
+	// This theme allows users to set a custom background.
+	add_theme_support( 'custom-background', apply_filters( 'twentyfourteen_custom_background_args', array(
+		'default-color' => 'f5f5f5',
+	) ) );
+
+	// Add support for featured content.
+	add_theme_support( 'featured-content', array(
+		'featured_content_filter' => 'twentyfourteen_get_featured_posts',
+		'max_posts' => 6,
+	) );
+
+	// This theme uses its own gallery styles.
+	add_filter( 'use_default_gallery_style', '__return_false' );
+}
+endif; // twentyfourteen_setup
+add_action( 'after_setup_theme', 'twentyfourteen_setup' );
+
+/**
+ * Adjust content_width value for image attachment template.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_content_width() {
+	if ( is_attachment() && wp_attachment_is_image() ) {
+		$GLOBALS['content_width'] = 810;
+	}
+}
+add_action( 'template_redirect', 'twentyfourteen_content_width' );
+
+/**
+ * Getter function for Featured Content Plugin.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @return array An array of WP_Post objects.
+ */
+function twentyfourteen_get_featured_posts() {
+	/**
+	 * Filter the featured posts to return in Twenty Fourteen.
+	 *
+	 * @since Twenty Fourteen 1.0
+	 *
+	 * @param array|bool $posts Array of featured posts, otherwise false.
+	 */
+	return apply_filters( 'twentyfourteen_get_featured_posts', array() );
+}
+
+/**
+ * A helper conditional function that returns a boolean value.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @return bool Whether there are featured posts.
+ */
+function twentyfourteen_has_featured_posts() {
+	return ! is_paged() && (bool) twentyfourteen_get_featured_posts();
+}
+
+/**
+ * Register three Twenty Fourteen widget areas.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_widgets_init() {
+	require get_template_directory() . '/inc/widgets.php';
+	register_widget( 'Twenty_Fourteen_Ephemera_Widget' );
+
+	register_sidebar( array(
+		'name'          => __( 'Primary Sidebar', 'twentyfourteen' ),
+		'id'            => 'sidebar-1',
+		'description'   => __( 'Main sidebar that appears on the left.', 'twentyfourteen' ),
+		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
+		'after_widget'  => '</aside>',
+		'before_title'  => '<h1 class="widget-title">',
+		'after_title'   => '</h1>',
+	) );
+	register_sidebar( array(
+		'name'          => __( 'Content Sidebar', 'twentyfourteen' ),
+		'id'            => 'sidebar-2',
+		'description'   => __( 'Additional sidebar that appears on the right.', 'twentyfourteen' ),
+		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
+		'after_widget'  => '</aside>',
+		'before_title'  => '<h1 class="widget-title">',
+		'after_title'   => '</h1>',
+	) );
+	register_sidebar( array(
+		'name'          => __( 'Footer Widget Area', 'twentyfourteen' ),
+		'id'            => 'sidebar-3',
+		'description'   => __( 'Appears in the footer section of the site.', 'twentyfourteen' ),
+		'before_widget' => '<aside id="%1$s" class="widget %2$s">',
+		'after_widget'  => '</aside>',
+		'before_title'  => '<h1 class="widget-title">',
+		'after_title'   => '</h1>',
+	) );
+}
+add_action( 'widgets_init', 'twentyfourteen_widgets_init' );
+
+/**
+ * Register Lato Google font for Twenty Fourteen.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @return string
+ */
+function twentyfourteen_font_url() {
+	$font_url = '';
+	/*
+	 * Translators: If there are characters in your language that are not supported
+	 * by Lato, translate this to 'off'. Do not translate into your own language.
+	 */
+	if ( 'off' !== _x( 'on', 'Lato font: on or off', 'twentyfourteen' ) ) {
+		$query_args = array(
+			'family' => urlencode( 'Lato:300,400,700,900,300italic,400italic,700italic' ),
+			'subset' => urlencode( 'latin,latin-ext' ),
+		);
+		$font_url = add_query_arg( $query_args, '//fonts.googleapis.com/css' );
+	}
+
+	return $font_url;
+}
+
+/**
+ * Enqueue scripts and styles for the front end.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_scripts() {
+	// Add Lato font, used in the main stylesheet.
+	wp_enqueue_style( 'twentyfourteen-lato', twentyfourteen_font_url(), array(), null );
+
+	// Add Genericons font, used in the main stylesheet.
+	wp_enqueue_style( 'genericons', get_template_directory_uri() . '/genericons/genericons.css', array(), '3.0.3' );
+
+	// Load our main stylesheet.
+	wp_enqueue_style( 'twentyfourteen-style', get_stylesheet_uri() );
+
+	// Load the Internet Explorer specific stylesheet.
+	wp_enqueue_style( 'twentyfourteen-ie', get_template_directory_uri() . '/css/ie.css', array( 'twentyfourteen-style' ), '20131205' );
+	wp_style_add_data( 'twentyfourteen-ie', 'conditional', 'lt IE 9' );
+
+	if ( is_singular() && comments_open() && get_option( 'thread_comments' ) ) {
+		wp_enqueue_script( 'comment-reply' );
+	}
+
+	if ( is_singular() && wp_attachment_is_image() ) {
+		wp_enqueue_script( 'twentyfourteen-keyboard-image-navigation', get_template_directory_uri() . '/js/keyboard-image-navigation.js', array( 'jquery' ), '20130402' );
+	}
+
+	if ( is_active_sidebar( 'sidebar-3' ) ) {
+		wp_enqueue_script( 'jquery-masonry' );
+	}
+
+	if ( is_front_page() && 'slider' == get_theme_mod( 'featured_content_layout' ) ) {
+		wp_enqueue_script( 'twentyfourteen-slider', get_template_directory_uri() . '/js/slider.js', array( 'jquery' ), '20131205', true );
+		wp_localize_script( 'twentyfourteen-slider', 'featuredSliderDefaults', array(
+			'prevText' => __( 'Previous', 'twentyfourteen' ),
+			'nextText' => __( 'Next', 'twentyfourteen' )
+		) );
+	}
+
+	wp_enqueue_script( 'twentyfourteen-script', get_template_directory_uri() . '/js/functions.js', array( 'jquery' ), '20150315', true );
+}
+add_action( 'wp_enqueue_scripts', 'twentyfourteen_scripts' );
+
+/**
+ * Enqueue Google fonts style to admin screen for custom header display.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_admin_fonts() {
+	wp_enqueue_style( 'twentyfourteen-lato', twentyfourteen_font_url(), array(), null );
+}
+add_action( 'admin_print_scripts-appearance_page_custom-header', 'twentyfourteen_admin_fonts' );
+
+if ( ! function_exists( 'twentyfourteen_the_attached_image' ) ) :
+/**
+ * Print the attached image with a link to the next attached image.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_the_attached_image() {
+	$post                = get_post();
+	/**
+	 * Filter the default Twenty Fourteen attachment size.
+	 *
+	 * @since Twenty Fourteen 1.0
+	 *
+	 * @param array $dimensions {
+	 *     An array of height and width dimensions.
+	 *
+	 *     @type int $height Height of the image in pixels. Default 810.
+	 *     @type int $width  Width of the image in pixels. Default 810.
+	 * }
+	 */
+	$attachment_size     = apply_filters( 'twentyfourteen_attachment_size', array( 810, 810 ) );
+	$next_attachment_url = wp_get_attachment_url();
+
+	/*
+	 * Grab the IDs of all the image attachments in a gallery so we can get the URL
+	 * of the next adjacent image in a gallery, or the first image (if we're
+	 * looking at the last image in a gallery), or, in a gallery of one, just the
+	 * link to that image file.
+	 */
+	$attachment_ids = get_posts( array(
+		'post_parent'    => $post->post_parent,
+		'fields'         => 'ids',
+		'numberposts'    => -1,
+		'post_status'    => 'inherit',
+		'post_type'      => 'attachment',
+		'post_mime_type' => 'image',
+		'order'          => 'ASC',
+		'orderby'        => 'menu_order ID',
+	) );
+
+	// If there is more than 1 attachment in a gallery...
+	if ( count( $attachment_ids ) > 1 ) {
+		foreach ( $attachment_ids as $attachment_id ) {
+			if ( $attachment_id == $post->ID ) {
+				$next_id = current( $attachment_ids );
+				break;
+			}
+		}
+
+		// get the URL of the next image attachment...
+		if ( $next_id ) {
+			$next_attachment_url = get_attachment_link( $next_id );
+		}
+
+		// or get the URL of the first image attachment.
+		else {
+			$next_attachment_url = get_attachment_link( reset( $attachment_ids ) );
+		}
+	}
+
+	printf( '<a href="%1$s" rel="attachment">%2$s</a>',
+		esc_url( $next_attachment_url ),
+		wp_get_attachment_image( $post->ID, $attachment_size )
+	);
+}
+endif;
+
+if ( ! function_exists( 'twentyfourteen_list_authors' ) ) :
+/**
+ * Print a list of all site contributors who published at least one post.
+ *
+ * @since Twenty Fourteen 1.0
+ */
+function twentyfourteen_list_authors() {
+	$contributor_ids = get_users( array(
+		'fields'  => 'ID',
+		'orderby' => 'post_count',
+		'order'   => 'DESC',
+		'who'     => 'authors',
+	) );
+
+	foreach ( $contributor_ids as $contributor_id ) :
+		$post_count = count_user_posts( $contributor_id );
+
+		// Move on if user has not published a post (yet).
+		if ( ! $post_count ) {
+			continue;
+		}
+	?>
+
+	<div class="contributor">
+		<div class="contributor-info">
+			<div class="contributor-avatar"><?php echo get_avatar( $contributor_id, 132 ); ?></div>
+			<div class="contributor-summary">
+				<h2 class="contributor-name"><?php echo get_the_author_meta( 'display_name', $contributor_id ); ?></h2>
+				<p class="contributor-bio">
+					<?php echo get_the_author_meta( 'description', $contributor_id ); ?>
+				</p>
+				<a class="button contributor-posts-link" href="<?php echo esc_url( get_author_posts_url( $contributor_id ) ); ?>">
+					<?php printf( _n( '%d Article', '%d Articles', $post_count, 'twentyfourteen' ), $post_count ); ?>
+				</a>
+			</div><!-- .contributor-summary -->
+		</div><!-- .contributor-info -->
+	</div><!-- .contributor -->
+
+	<?php
+	endforeach;
+}
+endif;
+
+/**
+ * Extend the default WordPress body classes.
+ *
+ * Adds body classes to denote:
+ * 1. Single or multiple authors.
+ * 2. Presence of header image except in Multisite signup and activate pages.
+ * 3. Index views.
+ * 4. Full-width content layout.
+ * 5. Presence of footer widgets.
+ * 6. Single views.
+ * 7. Featured content layout.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @param array $classes A list of existing body class values.
+ * @return array The filtered body class list.
+ */
+function twentyfourteen_body_classes( $classes ) {
+	if ( is_multi_author() ) {
+		$classes[] = 'group-blog';
+	}
+
+	if ( get_header_image() ) {
+		$classes[] = 'header-image';
+	} elseif ( ! in_array( $GLOBALS['pagenow'], array( 'wp-activate.php', 'wp-signup.php' ) ) ) {
+		$classes[] = 'masthead-fixed';
+	}
+
+	if ( is_archive() || is_search() || is_home() ) {
+		$classes[] = 'list-view';
+	}
+
+	if ( ( ! is_active_sidebar( 'sidebar-2' ) )
+		|| is_page_template( 'page-templates/full-width.php' )
+		|| is_page_template( 'page-templates/contributors.php' )
+		|| is_attachment() ) {
+		$classes[] = 'full-width';
+	}
+
+	if ( is_active_sidebar( 'sidebar-3' ) ) {
+		$classes[] = 'footer-widgets';
+	}
+
+	if ( is_singular() && ! is_front_page() ) {
+		$classes[] = 'singular';
+	}
+
+	if ( is_front_page() && 'slider' == get_theme_mod( 'featured_content_layout' ) ) {
+		$classes[] = 'slider';
+	} elseif ( is_front_page() ) {
+		$classes[] = 'grid';
+	}
+
+	return $classes;
+}
+add_filter( 'body_class', 'twentyfourteen_body_classes' );
+
+/**
+ * Extend the default WordPress post classes.
+ *
+ * Adds a post class to denote:
+ * Non-password protected page with a post thumbnail.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @param array $classes A list of existing post class values.
+ * @return array The filtered post class list.
+ */
+function twentyfourteen_post_classes( $classes ) {
+	if ( ! post_password_required() && ! is_attachment() && has_post_thumbnail() ) {
+		$classes[] = 'has-post-thumbnail';
+	}
+
+	return $classes;
+}
+add_filter( 'post_class', 'twentyfourteen_post_classes' );
+
+/**
+ * Create a nicely formatted and more specific title element text for output
+ * in head of document, based on current view.
+ *
+ * @since Twenty Fourteen 1.0
+ *
+ * @global int $paged WordPress archive pagination page count.
+ * @global int $page  WordPress paginated post page count.
+ *
+ * @param string $title Default title text for current view.
+ * @param string $sep Optional separator.
+ * @return string The filtered title.
+ */
+function twentyfourteen_wp_title( $title, $sep ) {
+	global $paged, $page;
+
+	if ( is_feed() ) {
+		return $title;
+	}
+
+	// Add the site name.
+	$title .= get_bloginfo( 'name', 'display' );
+
+	// 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 ) && ! is_404() ) {
+		$title = "$title $sep " . sprintf( __( 'Page %s', 'twentyfourteen' ), max( $paged, $page ) );
+	}
+
+	return $title;
+}
+add_filter( 'wp_title', 'twentyfourteen_wp_title', 10, 2 );
+
+// Implement Custom Header features.
+require get_template_directory() . '/inc/custom-header.php';
+
+// Custom template tags for this theme.
+require get_template_directory() . '/inc/template-tags.php';
+
+// Add Customizer functionality.
+require get_template_directory() . '/inc/customizer.php';
+
+/*
+ * Add Featured Content functionality.
+ *
+ * To overwrite in a plugin, define your own Featured_Content class on or
+ * before the 'setup_theme' hook.
+ */
+if ( ! class_exists( 'Featured_Content' ) && 'plugins.php' !== $GLOBALS['pagenow'] ) {
+	require get_template_directory() . '/inc/featured-content.php';
+}