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* @package WordPress
 * @subpackage Twenty Ten
 * @since 3.0.0
 */


/**
 * Set the content width based on the theme's design and stylesheet.
 *
 * Used to set the width of images and content. Should be equal to the width the theme
 * is designed for, generally via the style.css stylesheet.
 */
if ( ! isset( $content_width ) )
    $content_width = 640;


/** Tell WordPress to run twentyten_setup() when the 'after_setup_theme' hook is run. */
add_action( 'after_setup_theme', 'twentyten_setup' );


/**
 * Sets 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.
 *
 * To override twentyten_setup() in a child theme, remove the action hook and add your own
 * function tied to the after_setup_theme hook.
 *
 * @uses add_theme_support() To add support for post thumbnails, navigation menus, and automatic feed links.
 * @uses add_custom_background() To add support for a custom background.
 * @uses add_editor_style() To style the visual editor.
 * @uses load_theme_textdomain() For translation/localization support.
 * @uses add_custom_image_header() To add support for a custom header.
 * @uses register_default_headers() To register the default custom header images provided with the theme.
 * @uses set_post_thumbnail_size() To set a custom post thumbnail size.
 *
 * @since 3.0.0
 */
function twentyten_setup() {


    // This theme styles the visual editor with editor-style.css to match the theme style.
    add_editor_style();


    // This theme uses post thumbnails
    add_theme_support( 'post-thumbnails' );


    // This theme uses wp_nav_menu()
    add_theme_support( 'nav-menus' );


    // Add default posts and comments RSS feed links to head
    add_theme_support( 'automatic-feed-links' );


    // Make theme available for translation
    // Translations can be filed in the /languages/ directory
    load_theme_textdomain( 'twentyten', TEMPLATEPATH . '/languages' );


    $locale = get_locale();
    $locale_file = TEMPLATEPATH . "/languages/$locale.php";
    if ( is_readable( $locale_file ) )
        require_once( $locale_file );


    // This theme allows users to set a custom background
    add_custom_background();


    // Your changeable header business starts here
    define( 'HEADER_TEXTCOLOR', '' );
    // No CSS, just IMG call. The %s is a placeholder for the theme template directory URI.
    define( 'HEADER_IMAGE', '%s/images/headers/forestfloor.jpg' );


    // The height and width of your custom header. You can hook into the theme's own filters to change these values.
    // Add a filter to twentyten_header_image_width and twentyten_header_image_height to change these values.
    define( 'HEADER_IMAGE_WIDTH', apply_filters( 'twentyten_header_image_width',  940 ) );
    define( 'HEADER_IMAGE_HEIGHT', apply_filters( 'twentyten_header_image_height',    198 ) );


    // We'll be using post thumbnails for custom header images on posts and pages.
    // We want them to be 940 pixels wide by 198 pixels tall (larger images will be auto-cropped to fit).
    set_post_thumbnail_size( HEADER_IMAGE_WIDTH, HEADER_IMAGE_HEIGHT, true );


    // Don't support text inside the header image.
    define( 'NO_HEADER_TEXT', true );


    // Add a way for the custom header to be styled in the admin panel that controls
    // custom headers. See twentyten_admin_header_style(), below.
    add_custom_image_header( '', 'twentyten_admin_header_style' );


    // ... and thus ends the changeable header business.


    // Default custom headers packaged with the theme. %s is a placeholder for the theme template directory URI.
    register_default_headers( array (
        'berries' => array (
            'url' => '%s/images/headers/berries.jpg',
            'thumbnail_url' => '%s/images/headers/berries-thumbnail.jpg',
            'description' => __( 'Berries', 'twentyten' )
        ),
        'cherryblossom' => array (
            'url' => '%s/images/headers/cherryblossoms.jpg',
            'thumbnail_url' => '%s/images/headers/cherryblossoms-thumbnail.jpg',
            'description' => __( 'Cherry Blossoms', 'twentyten' )
        ),
        'concave' => array (
            'url' => '%s/images/headers/concave.jpg',
            'thumbnail_url' => '%s/images/headers/concave-thumbnail.jpg',
            'description' => __( 'Concave', 'twentyten' )
        ),
        'fern' => array (
            'url' => '%s/images/headers/fern.jpg',
            'thumbnail_url' => '%s/images/headers/fern-thumbnail.jpg',
            'description' => __( 'Fern', 'twentyten' )
        ),
        'forestfloor' => array (
            'url' => '%s/images/headers/forestfloor.jpg',
            'thumbnail_url' => '%s/images/headers/forestfloor-thumbnail.jpg',
            'description' => __( 'Forest Floor', 'twentyten' )
        ),
        'inkwell' => array (
            'url' => '%s/images/headers/inkwell.jpg',
            'thumbnail_url' => '%s/images/headers/inkwell-thumbnail.jpg',
            'description' => __( 'Inkwell', 'twentyten' )
        ),
        'path' => array (
            'url' => '%s/images/headers/path.jpg',
            'thumbnail_url' => '%s/images/headers/path-thumbnail.jpg',
            'description' => __( 'Path', 'twentyten' )
        ),
        'sunset' => array (
            'url' => '%s/images/headers/sunset.jpg',
            'thumbnail_url' => '%s/images/headers/sunset-thumbnail.jpg',
            'description' => __( 'Sunset', 'twentyten' )
        )
    ) );
}


if ( ! function_exists( 'twentyten_admin_header_style' ) ) :
/**
 * Styles the header image displayed on the Appearance > Header admin panel.
 *
 * Referenced via add_custom_image_header() in twentyten_setup().
 *
 * @since 3.0.0
 */
function twentyten_admin_header_style() {
?>
<style type="text/css">
#headimg {
    height: <?php echo HEADER_IMAGE_HEIGHT; ?>px;
    width: <?php echo HEADER_IMAGE_WIDTH; ?>px;
}
#headimg h1, #headimg #desc {
    display: none;
}
</style>
<?php
}
endif;


if ( ! function_exists( 'twentyten_the_page_number' ) ) :
/**
 * Prints the page number currently being browsed, with a vertical bar before it.
 *
 * Used in Twenty Ten's header.php to add the page number to the <title> HTML tag.
 *
 * @since 3.0.0
 */
function twentyten_the_page_number() {
    global $paged; // Contains page number.
    if ( $paged >= 2 )
        echo ' | ' . sprintf( __( 'Page %s' , 'twentyten' ), $paged );
}
endif;


/**
 * Sets the post excerpt length to 40 characters.
 *
 * To override this length in a child theme, remove the filter and add your own
 * function tied to the excerpt_length filter hook.
 *
 * @return int
 */
function twentyten_excerpt_length( $length ) {
    return 40;
}
add_filter( 'excerpt_length', 'twentyten_excerpt_length' );


/**
 * Sets the "read more" link to something pretty.
 *
 * To override this link in a child theme, remove the filter and add your own
 * function tied to the excerpt_more filter hook.
 *
 * @since 3.0.0
 * @return string A pretty 'Continue reading' link.
 */
function twentyten_excerpt_more( $more ) {
    return '&nbsp;&hellip; <a href="'. get_permalink() . '">' . __('Continue&nbsp;reading&nbsp;<span class="meta-nav">&rarr;</span>', 'twentyten') . '</a>';
}
add_filter( 'excerpt_more', 'twentyten_excerpt_more' );


/**
 * Remove inline styles printed when the gallery shortcode is used.
 *
 * Galleries are styled by the theme in Twenty Ten's style.css.
 *
 * @return string The gallery style filter, with the styles themselves removed.
 */
function twentyten_remove_gallery_css( $css ) {
    return preg_replace( "#<style type='text/css'>(.*?)</style>#s", '', $css );
}
add_filter( 'gallery_style', 'twentyten_remove_gallery_css' );


if ( ! function_exists( 'twentyten_comment' ) ) :
/**
 * Template for comments and pingbacks.
 *

* To override this walker in a child theme without modifying the comments template
 * simply create your own twentyten_comment(), and that function will be used instead.
 *
 * Used as a callback by wp_list_comments() for displaying the comments.
 *
 * @since 3.0.0
 */
function twentyten_comment( $comment, $args, $depth ) {
    $GLOBALS ['comment'] = $comment; ?>
    <?php if ( '' == $comment->comment_type ) : ?>
    <li <?php comment_class(); ?> id="li-comment-<?php comment_ID(); ?>">
        <div id="comment-<?php comment_ID(); ?>">
        <div class="comment-author vcard">
            <?php echo get_avatar( $comment, 40 ); ?>
            <?php printf( __( '<cite class="fn">%s</cite>  <span class="says">says:</span>', 'twentyten' ),  get_comment_author_link() ); ?>
        </div>
        <?php if ( $comment->comment_approved == '0' ) : ?>
            <em><?php _e( 'Your comment is awaiting moderation.', 'twentyten' ); ?></em>
            <br />
        <?php endif; ?>


        <div class="comment-meta commentmetadata"><a  href="<?php echo esc_url( get_comment_link( $comment->comment_ID )  ); ?>"><?php printf( __( '%1$s at %2$s', 'twentyten' ),  get_comment_date(),  get_comment_time() ); ?></a><?php  edit_comment_link( __( '(Edit)', 'twentyten' ),'  ','' );  ?></div>


        <div class="comment-body"><?php comment_text(); ?></div>


        <div class="reply">
            <?php comment_reply_link( array_merge( $args, array(  'depth' => $depth, 'max_depth' => $args['max_depth'] ) ) ); ?>
        </div>
    </div>


    <?php else : ?>
    <li class="post pingback">
        <p><?php _e( 'Pingback: ', 'twentyten' ); ?><?php  comment_author_link(); ?><?php edit_comment_link ( __('edit',  'twentyten'), '&nbsp;&nbsp;', '' ); ?></p>
    <?php endif;
}
endif;


if ( ! function_exists( 'twentyten_cat_list' ) ) :
/**
 * Returns the list of categories
 *
 * Returns the list of categories based on if we are or are
 * not browsing a category archive page.
 *
 * @uses twentyten_term_list
 *
 * @return string
 */
function twentyten_cat_list() {
    return twentyten_term_list( 'category', ', ', __( 'Posted in %s', 'twentyten' ), __( 'Also posted in %s', 'twentyten' ) );
}
endif;


if ( ! function_exists( 'twentyten_tag_list' ) ) :
/**
 * Returns the list of tags
 *
 * Returns the list of tags based on if we are or are not
 * browsing a tag archive page
 *
 * @uses twentyten_term_list
 *
 * @return string
 */
function twentyten_tag_list() {
    return twentyten_term_list( 'post_tag', ', ', __( 'Tagged %s', 'twentyten' ), __( 'Also tagged %s', 'twentyten' ) );
}
endif;




if ( ! function_exists( 'twentyten_term_list' ) ) :
/**
 * Returns the list of taxonomy items in multiple ways
 *
 * Returns the list of taxonomy items differently based on
 * if we are browsing a term archive page or a different
 * type of page.  If browsing a term archive page and the
 * post has no other taxonomied terms, it returns empty
 *
 * @return string
 */
function twentyten_term_list( $taxonomy, $glue = ', ', $text = '', $also_text = '' ) {
    global $wp_query, $post;
    $current_term = $wp_query->get_queried_object();
    $terms = wp_get_object_terms( $post->ID, $taxonomy );
    // If we're viewing a Taxonomy page..
    if ( isset( $current_term->taxonomy ) && $taxonomy == $current_term->taxonomy ) {
        // Remove the term from display.
        foreach ( (array) $terms as $key => $term ) {
            if ( $term->term_id == $current_term->term_id ) {
                unset( $terms[$key] );
                break;
            }
        }
        // Change to Also text as we've now removed something from the terms list.
        $text = $also_text;
    }
    $tlist = array();
    $rel = 'category' == $taxonomy ? 'rel="category"' : 'rel="tag"';
    foreach ( (array) $terms as $term ) {
        $tlist[] = '<a href="' . get_term_link( $term, $taxonomy ) .  '" title="' . esc_attr( sprintf( __( 'View all posts in %s', 'twentyten'  ), $term->name ) ) . '" ' . $rel . '>' . $term->name .  '</a>';
    }
    if ( ! empty( $tlist ) )
        return sprintf( $text, join( $glue, $tlist ) );
    return '';
}
endif;


/**
 * Register widgetized areas, including two sidebars and four widget-ready columns in the footer.
 *
 * To override twentyten_widgets_init() in a child theme, remove the action hook and add your own
 * function tied to the init hook.
 * @uses register_sidebar
 */
function twentyten_widgets_init() {
    // Area 1
    register_sidebar( array (
        'name' => 'Primary Widget Area',
        'id' => 'primary-widget-area',
        'description' => __( 'The primary widget area' , 'twentyten' ),
        'before_widget' => '<li id="%1$s" class="widget-container %2$s">',
        'after_widget' => "</li>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );


    // Area 2
    register_sidebar( array (
        'name' => 'Secondary Widget Area',
        'id' => 'secondary-widget-area',
        'description' => __( 'The secondary widget area' , 'twentyten' ),
        'before_widget' => '<li id="%1$s" class="widget-container %2$s">',
        'after_widget' => "</li>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );


    // Area 3
    register_sidebar( array (
        'name' => 'First Footer Widget Area',
        'id' => 'first-footer-widget-area',
        'description' => __( 'The first footer widget area' , 'twentyten' ),
        'before_widget' => '<li id="%1$s" class="widget-container %2$s">',
        'after_widget' => "</li>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );


    // Area 4
    register_sidebar( array (
        'name' => 'Second Footer Widget Area',
        'id' => 'second-footer-widget-area',
        'description' => __( 'The second footer widget area' , 'twentyten' ),
        'before_widget' => '<li id="%1$s" class="widget-container %2$s">',
        'after_widget' => "</li>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );


    // Area 5
    register_sidebar( array (
        'name' => 'Third Footer Widget Area',
        'id' => 'third-footer-widget-area',
        'description' => __( 'The third footer widget area' , 'twentyten' ),
        'before_widget' => '<li id="%1$s" class="widget-container %2$s">',
        'after_widget' => "</li>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );


    // Area 6
    register_sidebar( array (
        'name' => 'Fourth Footer Widget Area',
        'id' => 'fourth-footer-widget-area',
        'description' => __( 'The fourth footer widget area' , 'twentyten' ),
        'before_widget' => '<li id="%1$s" class="widget-container %2$s">',
        'after_widget' => "</li>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );
}
add_action( 'init', 'twentyten_widgets_init' );


if ( ! function_exists( 'twentyten_posted_on' ) ) :
/**
 * Prints HTML with meta information for the current post—date/time and author.
 *
 * @since Twenty Ten 1.0
 */
function twentyten_posted_on() {
    printf( __( '<span class="%1$s">Posted on</span> %2$s  <span class="meta-sep">by</span> %3$s', 'twentyten' ),
        'meta-prep meta-prep-author',
        sprintf( '<a href="%1$s" title="%2$s" rel="bookmark"><span class="entry-date">%3$s</span></a>',
            get_permalink(),
            esc_attr( get_the_time() ),
            get_the_date()
        ),
        sprintf( '<span class="author vcard"><a class="url fn  n" href="%1$s" title="%2$s">%3$s</a></span>',
            get_author_posts_url( get_the_author_meta( 'ID' ) ),
            sprintf( esc_attr__( 'View all posts by %s', 'twentyten' ), get_the_author() ),
            get_the_author()
        )
    );
}
endif;