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git-svn-id: http://core.svn.wordpress.org/trunk@23792 1a063a9b-81f0-0310-95a4-ce76da25c4cd
629 lines
21 KiB
PHP
629 lines
21 KiB
PHP
<?php
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/**
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* Twenty Eleven functions and definitions
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*
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* Sets up the theme and provides some helper functions. Some helper functions
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* are used 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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* The first function, twentyeleven_setup(), sets up the theme by registering support
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* for various features in WordPress, such as post thumbnails, navigation menus, and the like.
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*
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* When using a child theme (see http://codex.wordpress.org/Theme_Development and
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* http://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. The hook can be removed by using remove_action() or
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* remove_filter() and you can attach your own function to the hook.
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*
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* We can remove the parent theme's hook only after it is attached, which means we need to
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* wait until setting up the child theme:
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*
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* <code>
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* add_action( 'after_setup_theme', 'my_child_theme_setup' );
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* function my_child_theme_setup() {
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* // We are providing our own filter for excerpt_length (or using the unfiltered value)
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* remove_filter( 'excerpt_length', 'twentyeleven_excerpt_length' );
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* ...
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* }
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* </code>
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*
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* For more information on hooks, actions, and filters, see http://codex.wordpress.org/Plugin_API.
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*
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* @package WordPress
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* @subpackage Twenty_Eleven
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* @since Twenty Eleven 1.0
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*/
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/**
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* Set the content width based on the theme's design and stylesheet.
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*/
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if ( ! isset( $content_width ) )
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$content_width = 584;
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/**
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* Tell WordPress to run twentyeleven_setup() when the 'after_setup_theme' hook is run.
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*/
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add_action( 'after_setup_theme', 'twentyeleven_setup' );
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if ( ! function_exists( 'twentyeleven_setup' ) ):
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/**
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* Sets up theme defaults and registers support for various WordPress features.
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*
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* Note that this function is hooked into the after_setup_theme hook, which runs
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* before the init hook. The init hook is too late for some features, such as indicating
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* support post thumbnails.
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*
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* To override twentyeleven_setup() in a child theme, add your own twentyeleven_setup to your child theme's
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* functions.php file.
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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 style the visual editor.
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* @uses add_theme_support() To add support for post thumbnails, automatic feed links, custom headers
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* and backgrounds, and post formats.
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* @uses register_nav_menus() To add support for navigation menus.
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* @uses register_default_headers() To register the default custom header images provided with the theme.
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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 Eleven 1.0
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*/
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function twentyeleven_setup() {
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/* Make Twenty Eleven available for translation.
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* Translations can be added to the /languages/ directory.
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* If you're building a theme based on Twenty Eleven, use a find and replace
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* to change 'twentyeleven' to the name of your theme in all the template files.
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*/
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load_theme_textdomain( 'twentyeleven', get_template_directory() . '/languages' );
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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 up our theme options page and related code.
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require( get_template_directory() . '/inc/theme-options.php' );
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// Grab Twenty Eleven's Ephemera widget.
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require( get_template_directory() . '/inc/widgets.php' );
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// Add default posts and comments RSS feed links to <head>.
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add_theme_support( 'automatic-feed-links' );
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// This theme uses wp_nav_menu() in one location.
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register_nav_menu( 'primary', __( 'Primary Menu', 'twentyeleven' ) );
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// Add support for a variety of post formats
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add_theme_support( 'post-formats', array( 'aside', 'link', 'gallery', 'status', 'quote', 'image' ) );
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$theme_options = twentyeleven_get_theme_options();
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if ( 'dark' == $theme_options['color_scheme'] )
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$default_background_color = '1d1d1d';
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else
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$default_background_color = 'e2e2e2';
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// Add support for custom backgrounds.
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add_theme_support( 'custom-background', array(
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// Let WordPress know what our default background color is.
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// This is dependent on our current color scheme.
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'default-color' => $default_background_color,
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) );
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// This theme uses Featured Images (also known as post thumbnails) for per-post/per-page Custom Header images
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add_theme_support( 'post-thumbnails' );
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// Add support for custom headers.
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$custom_header_support = array(
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// The default header text color.
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'default-text-color' => '000',
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// The height and width of our custom header.
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'width' => apply_filters( 'twentyeleven_header_image_width', 1000 ),
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'height' => apply_filters( 'twentyeleven_header_image_height', 288 ),
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// Support flexible heights.
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'flex-height' => true,
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// Random image rotation by default.
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'random-default' => true,
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// Callback for styling the header.
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'wp-head-callback' => 'twentyeleven_header_style',
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// Callback for styling the header preview in the admin.
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'admin-head-callback' => 'twentyeleven_admin_header_style',
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// Callback used to display the header preview in the admin.
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'admin-preview-callback' => 'twentyeleven_admin_header_image',
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);
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add_theme_support( 'custom-header', $custom_header_support );
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if ( ! function_exists( 'get_custom_header' ) ) {
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// This is all for compatibility with versions of WordPress prior to 3.4.
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define( 'HEADER_TEXTCOLOR', $custom_header_support['default-text-color'] );
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define( 'HEADER_IMAGE', '' );
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define( 'HEADER_IMAGE_WIDTH', $custom_header_support['width'] );
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define( 'HEADER_IMAGE_HEIGHT', $custom_header_support['height'] );
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add_custom_image_header( $custom_header_support['wp-head-callback'], $custom_header_support['admin-head-callback'], $custom_header_support['admin-preview-callback'] );
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add_custom_background();
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}
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// We'll be using post thumbnails for custom header images on posts and pages.
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// We want them to be the size of the header image that we just defined
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// Larger images will be auto-cropped to fit, smaller ones will be ignored. See header.php.
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set_post_thumbnail_size( $custom_header_support['width'], $custom_header_support['height'], true );
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// Add Twenty Eleven's custom image sizes.
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// Used for large feature (header) images.
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add_image_size( 'large-feature', $custom_header_support['width'], $custom_header_support['height'], true );
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// Used for featured posts if a large-feature doesn't exist.
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add_image_size( 'small-feature', 500, 300 );
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// Default custom headers packaged with the theme. %s is a placeholder for the theme template directory URI.
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register_default_headers( array(
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'wheel' => array(
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'url' => '%s/images/headers/wheel.jpg',
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'thumbnail_url' => '%s/images/headers/wheel-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Wheel', 'twentyeleven' )
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),
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'shore' => array(
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'url' => '%s/images/headers/shore.jpg',
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'thumbnail_url' => '%s/images/headers/shore-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Shore', 'twentyeleven' )
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),
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'trolley' => array(
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'url' => '%s/images/headers/trolley.jpg',
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'thumbnail_url' => '%s/images/headers/trolley-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Trolley', 'twentyeleven' )
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),
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'pine-cone' => array(
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'url' => '%s/images/headers/pine-cone.jpg',
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'thumbnail_url' => '%s/images/headers/pine-cone-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Pine Cone', 'twentyeleven' )
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),
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'chessboard' => array(
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'url' => '%s/images/headers/chessboard.jpg',
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'thumbnail_url' => '%s/images/headers/chessboard-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Chessboard', 'twentyeleven' )
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),
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'lanterns' => array(
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'url' => '%s/images/headers/lanterns.jpg',
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'thumbnail_url' => '%s/images/headers/lanterns-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Lanterns', 'twentyeleven' )
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),
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'willow' => array(
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'url' => '%s/images/headers/willow.jpg',
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'thumbnail_url' => '%s/images/headers/willow-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Willow', 'twentyeleven' )
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),
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'hanoi' => array(
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'url' => '%s/images/headers/hanoi.jpg',
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'thumbnail_url' => '%s/images/headers/hanoi-thumbnail.jpg',
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/* translators: header image description */
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'description' => __( 'Hanoi Plant', 'twentyeleven' )
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)
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) );
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}
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endif; // twentyeleven_setup
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if ( ! function_exists( 'twentyeleven_header_style' ) ) :
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/**
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* Styles the header image and text displayed on the blog
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*
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* @since Twenty Eleven 1.0
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*/
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function twentyeleven_header_style() {
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$text_color = get_header_textcolor();
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// If no custom options for text are set, let's bail.
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if ( $text_color == HEADER_TEXTCOLOR )
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return;
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// If we get this far, we have custom styles. Let's do this.
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?>
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<style type="text/css">
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<?php
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// Has the text been hidden?
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if ( 'blank' == $text_color ) :
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?>
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#site-title,
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#site-description {
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position: absolute !important;
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clip: rect(1px 1px 1px 1px); /* IE6, IE7 */
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clip: rect(1px, 1px, 1px, 1px);
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}
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<?php
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// If the user has set a custom color for the text use that
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else :
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?>
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#site-title a,
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#site-description {
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color: #<?php echo $text_color; ?> !important;
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}
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<?php endif; ?>
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</style>
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<?php
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}
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endif; // twentyeleven_header_style
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if ( ! function_exists( 'twentyeleven_admin_header_style' ) ) :
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/**
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* Styles the header image displayed on the Appearance > Header admin panel.
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*
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* Referenced via add_theme_support('custom-header') in twentyeleven_setup().
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*
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* @since Twenty Eleven 1.0
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*/
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function twentyeleven_admin_header_style() {
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?>
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<style type="text/css">
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.appearance_page_custom-header #headimg {
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border: none;
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}
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#headimg h1,
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#desc {
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font-family: "Helvetica Neue", Arial, Helvetica, "Nimbus Sans L", sans-serif;
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}
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#headimg h1 {
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margin: 0;
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}
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#headimg h1 a {
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font-size: 32px;
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line-height: 36px;
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text-decoration: none;
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}
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#desc {
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font-size: 14px;
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line-height: 23px;
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padding: 0 0 3em;
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}
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<?php
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// If the user has set a custom color for the text use that
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if ( get_header_textcolor() != HEADER_TEXTCOLOR ) :
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?>
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#site-title a,
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#site-description {
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color: #<?php echo get_header_textcolor(); ?>;
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}
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<?php endif; ?>
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#headimg img {
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max-width: 1000px;
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height: auto;
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width: 100%;
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}
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</style>
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<?php
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}
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endif; // twentyeleven_admin_header_style
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if ( ! function_exists( 'twentyeleven_admin_header_image' ) ) :
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/**
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* Custom header image markup displayed on the Appearance > Header admin panel.
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*
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* Referenced via add_theme_support('custom-header') in twentyeleven_setup().
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*
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* @since Twenty Eleven 1.0
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*/
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function twentyeleven_admin_header_image() { ?>
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<div id="headimg">
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<?php
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$color = get_header_textcolor();
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$image = get_header_image();
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if ( $color && $color != 'blank' )
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$style = ' style="color:#' . $color . '"';
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else
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$style = ' style="display:none"';
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?>
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<h1><a id="name"<?php echo $style; ?> onclick="return false;" href="<?php echo esc_url( home_url( '/' ) ); ?>"><?php bloginfo( 'name' ); ?></a></h1>
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<div id="desc"<?php echo $style; ?>><?php bloginfo( 'description' ); ?></div>
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<?php if ( $image ) : ?>
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<img src="<?php echo esc_url( $image ); ?>" alt="" />
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<?php endif; ?>
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</div>
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<?php }
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endif; // twentyeleven_admin_header_image
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/**
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* Sets the post excerpt length to 40 words.
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*
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* To override this length in a child theme, remove the filter and add your own
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* function tied to the excerpt_length filter hook.
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*/
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function twentyeleven_excerpt_length( $length ) {
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return 40;
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}
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add_filter( 'excerpt_length', 'twentyeleven_excerpt_length' );
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if ( ! function_exists( 'twentyeleven_continue_reading_link' ) ) :
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/**
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* Returns a "Continue Reading" link for excerpts
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*/
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function twentyeleven_continue_reading_link() {
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return ' <a href="'. esc_url( get_permalink() ) . '">' . __( 'Continue reading <span class="meta-nav">→</span>', 'twentyeleven' ) . '</a>';
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}
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endif; // twentyeleven_continue_reading_link
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/**
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* Replaces "[...]" (appended to automatically generated excerpts) with an ellipsis and twentyeleven_continue_reading_link().
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*
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* To override this in a child theme, remove the filter and add your own
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* function tied to the excerpt_more filter hook.
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*/
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function twentyeleven_auto_excerpt_more( $more ) {
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return ' …' . twentyeleven_continue_reading_link();
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}
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add_filter( 'excerpt_more', 'twentyeleven_auto_excerpt_more' );
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/**
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* Adds a pretty "Continue Reading" link to custom post excerpts.
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*
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* To override this link in a child theme, remove the filter and add your own
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* function tied to the get_the_excerpt filter hook.
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*/
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function twentyeleven_custom_excerpt_more( $output ) {
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if ( has_excerpt() && ! is_attachment() ) {
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$output .= twentyeleven_continue_reading_link();
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}
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return $output;
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}
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add_filter( 'get_the_excerpt', 'twentyeleven_custom_excerpt_more' );
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/**
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* Get our wp_nav_menu() fallback, wp_page_menu(), to show a home link.
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*/
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function twentyeleven_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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return $args;
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}
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add_filter( 'wp_page_menu_args', 'twentyeleven_page_menu_args' );
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/**
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* Register our sidebars and widgetized areas. Also register the default Epherma widget.
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*
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* @since Twenty Eleven 1.0
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*/
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function twentyeleven_widgets_init() {
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register_widget( 'Twenty_Eleven_Ephemera_Widget' );
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register_sidebar( array(
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'name' => __( 'Main Sidebar', 'twentyeleven' ),
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'id' => 'sidebar-1',
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => "</aside>",
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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) );
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register_sidebar( array(
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'name' => __( 'Showcase Sidebar', 'twentyeleven' ),
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'id' => 'sidebar-2',
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'description' => __( 'The sidebar for the optional Showcase Template', 'twentyeleven' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => "</aside>",
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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) );
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register_sidebar( array(
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'name' => __( 'Footer Area One', 'twentyeleven' ),
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'id' => 'sidebar-3',
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'description' => __( 'An optional widget area for your site footer', 'twentyeleven' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => "</aside>",
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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) );
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register_sidebar( array(
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'name' => __( 'Footer Area Two', 'twentyeleven' ),
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'id' => 'sidebar-4',
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'description' => __( 'An optional widget area for your site footer', 'twentyeleven' ),
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'before_widget' => '<aside id="%1$s" class="widget %2$s">',
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'after_widget' => "</aside>",
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'before_title' => '<h3 class="widget-title">',
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'after_title' => '</h3>',
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) );
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register_sidebar( array(
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'name' => __( 'Footer Area Three', 'twentyeleven' ),
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'id' => 'sidebar-5',
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'description' => __( 'An optional widget area for your site footer', 'twentyeleven' ),
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'before_widget' => '<aside id="%1$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', 'twentyeleven_widgets_init' );
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if ( ! function_exists( 'twentyeleven_content_nav' ) ) :
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/**
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* Display navigation to next/previous pages when applicable
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*/
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function twentyeleven_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 ); ?>">
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<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentyeleven' ); ?></h3>
|
|
<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'twentyeleven' ) ); ?></div>
|
|
<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→</span>', 'twentyeleven' ) ); ?></div>
|
|
</nav><!-- #nav-above -->
|
|
<?php endif;
|
|
}
|
|
endif; // twentyeleven_content_nav
|
|
|
|
/**
|
|
* Return the first link from the post content. If none found, the
|
|
* post permalink is used as a fallback.
|
|
*
|
|
* @return string
|
|
*/
|
|
function twentyeleven_get_first_url() {
|
|
$has_url = function_exists( 'get_the_url' ) ? get_the_url() : false;
|
|
|
|
if ( ! $has_url )
|
|
$has_url = twentyeleven_url_grabber();
|
|
|
|
return ( $has_url ) ? $has_url : apply_filters( 'the_permalink', get_permalink() );
|
|
}
|
|
|
|
/**
|
|
* Return the URL for the first link found in the post content.
|
|
*
|
|
* @since Twenty Eleven 1.0
|
|
* @return string|bool URL or false when no link is present.
|
|
*/
|
|
function twentyeleven_url_grabber() {
|
|
if ( ! preg_match( '/<a\s[^>]*?href=[\'"](.+?)[\'"]/is', get_the_content(), $matches ) )
|
|
return false;
|
|
|
|
return esc_url_raw( $matches[1] );
|
|
}
|
|
|
|
/**
|
|
* Count the number of footer sidebars to enable dynamic classes for the footer
|
|
*/
|
|
function twentyeleven_footer_sidebar_class() {
|
|
$count = 0;
|
|
|
|
if ( is_active_sidebar( 'sidebar-3' ) )
|
|
$count++;
|
|
|
|
if ( is_active_sidebar( 'sidebar-4' ) )
|
|
$count++;
|
|
|
|
if ( is_active_sidebar( 'sidebar-5' ) )
|
|
$count++;
|
|
|
|
$class = '';
|
|
|
|
switch ( $count ) {
|
|
case '1':
|
|
$class = 'one';
|
|
break;
|
|
case '2':
|
|
$class = 'two';
|
|
break;
|
|
case '3':
|
|
$class = 'three';
|
|
break;
|
|
}
|
|
|
|
if ( $class )
|
|
echo 'class="' . $class . '"';
|
|
}
|
|
|
|
if ( ! function_exists( 'twentyeleven_comment' ) ) :
|
|
/**
|
|
* Template for comments and pingbacks.
|
|
*
|
|
* To override this walker in a child theme without modifying the comments template
|
|
* simply create your own twentyeleven_comment(), and that function will be used instead.
|
|
*
|
|
* Used as a callback by wp_list_comments() for displaying the comments.
|
|
*
|
|
* @since Twenty Eleven 1.0
|
|
*/
|
|
function twentyeleven_comment( $comment, $args, $depth ) {
|
|
$GLOBALS['comment'] = $comment;
|
|
switch ( $comment->comment_type ) :
|
|
case 'pingback' :
|
|
case 'trackback' :
|
|
?>
|
|
<li class="post pingback">
|
|
<p><?php _e( 'Pingback:', 'twentyeleven' ); ?> <?php comment_author_link(); ?><?php edit_comment_link( __( 'Edit', 'twentyeleven' ), '<span class="edit-link">', '</span>' ); ?></p>
|
|
<?php
|
|
break;
|
|
default :
|
|
?>
|
|
<li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
|
|
<article id="comment-<?php comment_ID(); ?>" class="comment">
|
|
<footer class="comment-meta">
|
|
<div class="comment-author vcard">
|
|
<?php
|
|
$avatar_size = 68;
|
|
if ( '0' != $comment->comment_parent )
|
|
$avatar_size = 39;
|
|
|
|
echo get_avatar( $comment, $avatar_size );
|
|
|
|
/* translators: 1: comment author, 2: date and time */
|
|
printf( __( '%1$s on %2$s <span class="says">said:</span>', 'twentyeleven' ),
|
|
sprintf( '<span class="fn">%s</span>', get_comment_author_link() ),
|
|
sprintf( '<a href="%1$s"><time datetime="%2$s">%3$s</time></a>',
|
|
esc_url( get_comment_link( $comment->comment_ID ) ),
|
|
get_comment_time( 'c' ),
|
|
/* translators: 1: date, 2: time */
|
|
sprintf( __( '%1$s at %2$s', 'twentyeleven' ), get_comment_date(), get_comment_time() )
|
|
)
|
|
);
|
|
?>
|
|
|
|
<?php edit_comment_link( __( 'Edit', 'twentyeleven' ), '<span class="edit-link">', '</span>' ); ?>
|
|
</div><!-- .comment-author .vcard -->
|
|
|
|
<?php if ( $comment->comment_approved == '0' ) : ?>
|
|
<em class="comment-awaiting-moderation"><?php _e( 'Your comment is awaiting moderation.', 'twentyeleven' ); ?></em>
|
|
<br />
|
|
<?php endif; ?>
|
|
|
|
</footer>
|
|
|
|
<div class="comment-content"><?php comment_text(); ?></div>
|
|
|
|
<div class="reply">
|
|
<?php comment_reply_link( array_merge( $args, array( 'reply_text' => __( 'Reply <span>↓</span>', 'twentyeleven' ), 'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
|
|
</div><!-- .reply -->
|
|
</article><!-- #comment-## -->
|
|
|
|
<?php
|
|
break;
|
|
endswitch;
|
|
}
|
|
endif; // ends check for twentyeleven_comment()
|
|
|
|
if ( ! function_exists( 'twentyeleven_posted_on' ) ) :
|
|
/**
|
|
* Prints HTML with meta information for the current post-date/time and author.
|
|
* Create your own twentyeleven_posted_on to override in a child theme
|
|
*
|
|
* @since Twenty Eleven 1.0
|
|
*/
|
|
function twentyeleven_posted_on() {
|
|
printf( __( '<span class="sep">Posted on </span><a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a><span class="by-author"> <span class="sep"> by </span> <span class="author vcard"><a class="url fn n" href="%5$s" title="%6$s" rel="author">%7$s</a></span></span>', 'twentyeleven' ),
|
|
esc_url( get_permalink() ),
|
|
esc_attr( get_the_time() ),
|
|
esc_attr( get_the_date( 'c' ) ),
|
|
esc_html( get_the_date() ),
|
|
esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
|
|
esc_attr( sprintf( __( 'View all posts by %s', 'twentyeleven' ), get_the_author() ) ),
|
|
get_the_author()
|
|
);
|
|
}
|
|
endif;
|
|
|
|
/**
|
|
* Adds two classes to the array of body classes.
|
|
* The first is if the site has only had one author with published posts.
|
|
* The second is if a singular post being displayed
|
|
*
|
|
* @since Twenty Eleven 1.0
|
|
*/
|
|
function twentyeleven_body_classes( $classes ) {
|
|
|
|
if ( function_exists( 'is_multi_author' ) && ! is_multi_author() )
|
|
$classes[] = 'single-author';
|
|
|
|
if ( is_singular() && ! is_home() && ! is_page_template( 'showcase.php' ) && ! is_page_template( 'sidebar-page.php' ) )
|
|
$classes[] = 'singular';
|
|
|
|
return $classes;
|
|
}
|
|
add_filter( 'body_class', 'twentyeleven_body_classes' );
|