WordPress/wp-admin/includes/template.php

<?php
/**
 * Template WordPress Administration API.
 *
 * A Big Mess. Also some neat functions that are nicely written.
 *
 * @package WordPress
 * @subpackage Administration
 */

//
// Category Checklists
//

/**
 * Walker to output an unordered list of category checkbox <input> elements.
 *
 * @see Walker
 * @see wp_category_checklist()
 * @see wp_terms_checklist()
 * @since 2.5.1
 */
class Walker_Category_Checklist extends Walker {
	var $tree_type = 'category';
	var $db_fields = array ('parent' => 'parent', 'id' => 'term_id'); //TODO: decouple this

	function start_lvl( &$output, $depth = 0, $args = array() ) {
		$indent = str_repeat("\t", $depth);
		$output .= "$indent<ul class='children'>\n";
	}

	function end_lvl( &$output, $depth = 0, $args = array() ) {
		$indent = str_repeat("\t", $depth);
		$output .= "$indent</ul>\n";
	}

	function start_el( &$output, $category, $depth, $args, $id = 0 ) {
		extract($args);
		if ( empty($taxonomy) )
			$taxonomy = 'category';

		if ( $taxonomy == 'category' )
			$name = 'post_category';
		else
			$name = 'tax_input['.$taxonomy.']';

		$class = in_array( $category->term_id, $popular_cats ) ? ' class="popular-category"' : '';
		$output .= "\n<li id='{$taxonomy}-{$category->term_id}'$class>" . '<label class="selectit"><input value="' . $category->term_id . '" type="checkbox" name="'.$name.'[]" id="in-'.$taxonomy.'-' . $category->term_id . '"' . checked( in_array( $category->term_id, $selected_cats ), true, false ) . disabled( empty( $args['disabled'] ), false, false ) . ' /> ' . esc_html( apply_filters('the_category', $category->name )) . '</label>';
	}

	function end_el( &$output, $category, $depth = 0, $args = array() ) {
		$output .= "</li>\n";
	}
}

/**
 * Output an unordered list of checkbox <input> elements labelled
 * with category names.
 *
 * @see wp_terms_checklist()
 * @since 2.5.1
 *
 * @param int $post_id Mark categories associated with this post as checked. $selected_cats must not be an array.
 * @param int $descendants_and_self ID of the category to output along with its descendents.
 * @param bool|array $selected_cats List of categories to mark as checked.
 * @param bool|array $popular_cats Override the list of categories that receive the "popular-category" class.
 * @param object $walker Walker object to use to build the output.
 * @param bool $checked_ontop Move checked items out of the hierarchy and to the top of the list.
 */
function wp_category_checklist( $post_id = 0, $descendants_and_self = 0, $selected_cats = false, $popular_cats = false, $walker = null, $checked_ontop = true ) {
	wp_terms_checklist( $post_id, array(
		'taxonomy' => 'category',
		'descendants_and_self' => $descendants_and_self,
		'selected_cats' => $selected_cats,
		'popular_cats' => $popular_cats,
		'walker' => $walker,
		'checked_ontop' => $checked_ontop
	) );
}

/**
 * Output an unordered list of checkbox <input> elements labelled
 * with term names. Taxonomy independent version of wp_category_checklist().
 *
 * @since 3.0.0
 *
 * @param int $post_id
 * @param array $args
 */
function wp_terms_checklist($post_id = 0, $args = array()) {
 	$defaults = array(
		'descendants_and_self' => 0,
		'selected_cats' => false,
		'popular_cats' => false,
		'walker' => null,
		'taxonomy' => 'category',
		'checked_ontop' => true
	);
	$args = apply_filters( 'wp_terms_checklist_args', $args, $post_id );

	extract( wp_parse_args($args, $defaults), EXTR_SKIP );

	if ( empty($walker) || !is_a($walker, 'Walker') )
		$walker = new Walker_Category_Checklist;

	$descendants_and_self = (int) $descendants_and_self;

	$args = array('taxonomy' => $taxonomy);

	$tax = get_taxonomy($taxonomy);
	$args['disabled'] = !current_user_can($tax->cap->assign_terms);

	if ( is_array( $selected_cats ) )
		$args['selected_cats'] = $selected_cats;
	elseif ( $post_id )
		$args['selected_cats'] = wp_get_object_terms($post_id, $taxonomy, array_merge($args, array('fields' => 'ids')));
	else
		$args['selected_cats'] = array();

	if ( is_array( $popular_cats ) )
		$args['popular_cats'] = $popular_cats;
	else
		$args['popular_cats'] = get_terms( $taxonomy, array( 'fields' => 'ids', 'orderby' => 'count', 'order' => 'DESC', 'number' => 10, 'hierarchical' => false ) );

	if ( $descendants_and_self ) {
		$categories = (array) get_terms($taxonomy, array( 'child_of' => $descendants_and_self, 'hierarchical' => 0, 'hide_empty' => 0 ) );
		$self = get_term( $descendants_and_self, $taxonomy );
		array_unshift( $categories, $self );
	} else {
		$categories = (array) get_terms($taxonomy, array('get' => 'all'));
	}

	if ( $checked_ontop ) {
		// Post process $categories rather than adding an exclude to the get_terms() query to keep the query the same across all posts (for any query cache)
		$checked_categories = array();
		$keys = array_keys( $categories );

		foreach( $keys as $k ) {
			if ( in_array( $categories[$k]->term_id, $args['selected_cats'] ) ) {
				$checked_categories[] = $categories[$k];
				unset( $categories[$k] );
			}
		}

		// Put checked cats on top
		echo call_user_func_array(array(&$walker, 'walk'), array($checked_categories, 0, $args));
	}
	// Then the rest of them
	echo call_user_func_array(array(&$walker, 'walk'), array($categories, 0, $args));
}

/**
 * Retrieve a list of the most popular terms from the specified taxonomy.
 *
 * If the $echo argument is true then the elements for a list of checkbox
 * <input> elements labelled with the names of the selected terms is output.
 * If the $post_ID global isn't empty then the terms associated with that
 * post will be marked as checked.
 *
 * @since 2.5.0
 *
 * @param string $taxonomy Taxonomy to retrieve terms from.
 * @param int $default Unused.
 * @param int $number Number of terms to retrieve. Defaults to 10.
 * @param bool $echo Optionally output the list as well. Defaults to true.
 * @return array List of popular term IDs.
 */
function wp_popular_terms_checklist( $taxonomy, $default = 0, $number = 10, $echo = true ) {
	global $post_ID;

	if ( $post_ID )
		$checked_terms = wp_get_object_terms($post_ID, $taxonomy, array('fields'=>'ids'));
	else
		$checked_terms = array();

	$terms = get_terms( $taxonomy, array( 'orderby' => 'count', 'order' => 'DESC', 'number' => $number, 'hierarchical' => false ) );

	$tax = get_taxonomy($taxonomy);
	if ( ! current_user_can($tax->cap->assign_terms) )
		$disabled = 'disabled="disabled"';
	else
		$disabled = '';

	$popular_ids = array();
	foreach ( (array) $terms as $term ) {
		$popular_ids[] = $term->term_id;
		if ( !$echo ) // hack for AJAX use
			continue;
		$id = "popular-$taxonomy-$term->term_id";
		$checked = in_array( $term->term_id, $checked_terms ) ? 'checked="checked"' : '';
		?>

		<li id="<?php echo $id; ?>" class="popular-category">
			<label class="selectit">
			<input id="in-<?php echo $id; ?>" type="checkbox" <?php echo $checked; ?> value="<?php echo (int) $term->term_id; ?>" <?php echo $disabled ?>/>
				<?php echo esc_html( apply_filters( 'the_category', $term->name ) ); ?>
			</label>
		</li>

		<?php
	}
	return $popular_ids;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.1
 *
 * @param unknown_type $link_id
 */
function wp_link_category_checklist( $link_id = 0 ) {
	$default = 1;

	if ( $link_id ) {
		$checked_categories = wp_get_link_cats( $link_id );
		// No selected categories, strange
		if ( ! count( $checked_categories ) )
			$checked_categories[] = $default;
	} else {
		$checked_categories[] = $default;
	}

	$categories = get_terms( 'link_category', array( 'orderby' => 'name', 'hide_empty' => 0 ) );

	if ( empty( $categories ) )
		return;

	foreach ( $categories as $category ) {
		$cat_id = $category->term_id;
		$name = esc_html( apply_filters( 'the_category', $category->name ) );
		$checked = in_array( $cat_id, $checked_categories ) ? ' checked="checked"' : '';
		echo '<li id="link-category-', $cat_id, '"><label for="in-link-category-', $cat_id, '" class="selectit"><input value="', $cat_id, '" type="checkbox" name="link_category[]" id="in-link-category-', $cat_id, '"', $checked, '/> ', $name, "</label></li>";
	}
}

// adds hidden fields with the data for use in the inline editor for posts and pages
/**
 * {@internal Missing Short Description}}
 *
 * @since 2.7.0
 *
 * @param unknown_type $post
 */
function get_inline_data($post) {
	$post_type_object = get_post_type_object($post->post_type);
	if ( ! current_user_can($post_type_object->cap->edit_post, $post->ID) )
		return;

	$title = esc_textarea( trim( $post->post_title ) );

	echo '
<div class="hidden" id="inline_' . $post->ID . '">
	<div class="post_title">' . $title . '</div>
	<div class="post_name">' . apply_filters('editable_slug', $post->post_name) . '</div>
	<div class="post_author">' . $post->post_author . '</div>
	<div class="comment_status">' . esc_html( $post->comment_status ) . '</div>
	<div class="ping_status">' . esc_html( $post->ping_status ) . '</div>
	<div class="_status">' . esc_html( $post->post_status ) . '</div>
	<div class="jj">' . mysql2date( 'd', $post->post_date, false ) . '</div>
	<div class="mm">' . mysql2date( 'm', $post->post_date, false ) . '</div>
	<div class="aa">' . mysql2date( 'Y', $post->post_date, false ) . '</div>
	<div class="hh">' . mysql2date( 'H', $post->post_date, false ) . '</div>
	<div class="mn">' . mysql2date( 'i', $post->post_date, false ) . '</div>
	<div class="ss">' . mysql2date( 's', $post->post_date, false ) . '</div>
	<div class="post_password">' . esc_html( $post->post_password ) . '</div>';

	if ( $post_type_object->hierarchical )
		echo '<div class="post_parent">' . $post->post_parent . '</div>';

	if ( $post->post_type == 'page' )
		echo '<div class="page_template">' . esc_html( get_post_meta( $post->ID, '_wp_page_template', true ) ) . '</div>';

	if ( post_type_supports( $post->post_type, 'page-attributes' ) )
		echo '<div class="menu_order">' . $post->menu_order . '</div>';

	$taxonomy_names = get_object_taxonomies( $post->post_type );
	foreach ( $taxonomy_names as $taxonomy_name) {
		$taxonomy = get_taxonomy( $taxonomy_name );

		if ( $taxonomy->hierarchical && $taxonomy->show_ui ) {
				echo '<div class="post_category" id="' . $taxonomy_name . '_' . $post->ID . '">'
					. implode( ',', wp_get_object_terms( $post->ID, $taxonomy_name, array( 'fields' => 'ids' ) ) ) . '</div>';
		} elseif ( $taxonomy->show_ui ) {
			echo '<div class="tags_input" id="'.$taxonomy_name.'_'.$post->ID.'">'
				. esc_html( str_replace( ',', ', ', get_terms_to_edit( $post->ID, $taxonomy_name ) ) ) . '</div>';
		}
	}

	if ( !$post_type_object->hierarchical )
		echo '<div class="sticky">' . (is_sticky($post->ID) ? 'sticky' : '') . '</div>';

	if ( post_type_supports( $post->post_type, 'post-formats' ) )
		echo '<div class="post_format">' . esc_html( get_post_format( $post->ID ) ) . '</div>';

	echo '</div>';
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.7.0
 *
 * @param unknown_type $position
 * @param unknown_type $checkbox
 * @param unknown_type $mode
 */
function wp_comment_reply($position = '1', $checkbox = false, $mode = 'single', $table_row = true) {
	// allow plugin to replace the popup content
	$content = apply_filters( 'wp_comment_reply', '', array('position' => $position, 'checkbox' => $checkbox, 'mode' => $mode) );

	if ( ! empty($content) ) {
		echo $content;
		return;
	}

	if ( $mode == 'single' ) {
		$wp_list_table = _get_list_table('WP_Post_Comments_List_Table');
	} else {
		$wp_list_table = _get_list_table('WP_Comments_List_Table');
	}

?>
<form method="get" action="">
<?php if ( $table_row ) : ?>
<table style="display:none;"><tbody id="com-reply"><tr id="replyrow" style="display:none;"><td colspan="<?php echo $wp_list_table->get_column_count(); ?>" class="colspanchange">
<?php else : ?>
<div id="com-reply" style="display:none;"><div id="replyrow" style="display:none;">
<?php endif; ?>
	<div id="replyhead" style="display:none;"><h5><?php _e( 'Reply to Comment' ); ?></h5></div>
	<div id="addhead" style="display:none;"><h5><?php _e('Add new Comment'); ?></h5></div>
	<div id="edithead" style="display:none;">
		<div class="inside">
		<label for="author"><?php _e('Name') ?></label>
		<input type="text" name="newcomment_author" size="50" value="" tabindex="101" id="author" />
		</div>

		<div class="inside">
		<label for="author-email"><?php _e('E-mail') ?></label>
		<input type="text" name="newcomment_author_email" size="50" value="" tabindex="102" id="author-email" />
		</div>

		<div class="inside">
		<label for="author-url"><?php _e('URL') ?></label>
		<input type="text" id="author-url" name="newcomment_author_url" size="103" value="" tabindex="103" />
		</div>
		<div style="clear:both;"></div>
	</div>

	<div id="replycontainer">
	<?php
	$quicktags_settings = array( 'buttons' => 'strong,em,link,block,del,ins,img,ul,ol,li,code,spell,close' );
	wp_editor( '', 'replycontent', array( 'media_buttons' => false, 'tinymce' => false, 'quicktags' => $quicktags_settings, 'tabindex' => 104 ) );
	?>
	</div>

	<p id="replysubmit" class="submit">
	<a href="#comments-form" class="cancel button-secondary alignleft" tabindex="106"><?php _e('Cancel'); ?></a>
	<a href="#comments-form" class="save button-primary alignright" tabindex="104">
	<span id="addbtn" style="display:none;"><?php _e('Add Comment'); ?></span>
	<span id="savebtn" style="display:none;"><?php _e('Update Comment'); ?></span>
	<span id="replybtn" style="display:none;"><?php _e('Submit Reply'); ?></span></a>
	<img class="waiting" style="display:none;" src="<?php echo esc_url( admin_url( 'images/wpspin_light.gif' ) ); ?>" alt="" />
	<span class="error" style="display:none;"></span>
	<br class="clear" />
	</p>

	<input type="hidden" name="user_ID" id="user_ID" value="<?php echo get_current_user_id(); ?>" />
	<input type="hidden" name="action" id="action" value="" />
	<input type="hidden" name="comment_ID" id="comment_ID" value="" />
	<input type="hidden" name="comment_post_ID" id="comment_post_ID" value="" />
	<input type="hidden" name="status" id="status" value="" />
	<input type="hidden" name="position" id="position" value="<?php echo $position; ?>" />
	<input type="hidden" name="checkbox" id="checkbox" value="<?php echo $checkbox ? 1 : 0; ?>" />
	<input type="hidden" name="mode" id="mode" value="<?php echo esc_attr($mode); ?>" />
	<?php
		wp_nonce_field( 'replyto-comment', '_ajax_nonce-replyto-comment', false );
		if ( current_user_can( 'unfiltered_html' ) )
			wp_nonce_field( 'unfiltered-html-comment', '_wp_unfiltered_html_comment', false );
	?>
<?php if ( $table_row ) : ?>
</td></tr></tbody></table>
<?php else : ?>
</div></div>
<?php endif; ?>
</form>
<?php
}

/**
 * Output 'undo move to trash' text for comments
 *
 * @since 2.9.0
 */
function wp_comment_trashnotice() {
?>
<div class="hidden" id="trash-undo-holder">
	<div class="trash-undo-inside"><?php printf(__('Comment by %s moved to the trash.'), '<strong></strong>'); ?> <span class="undo untrash"><a href="#"><?php _e('Undo'); ?></a></span></div>
</div>
<div class="hidden" id="spam-undo-holder">
	<div class="spam-undo-inside"><?php printf(__('Comment by %s marked as spam.'), '<strong></strong>'); ?> <span class="undo unspam"><a href="#"><?php _e('Undo'); ?></a></span></div>
</div>
<?php
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 1.2.0
 *
 * @param unknown_type $meta
 */
function list_meta( $meta ) {
	// Exit if no meta
	if ( ! $meta ) {
		echo '
<table id="list-table" style="display: none;">
	<thead>
	<tr>
		<th class="left">' . _x( 'Name', 'meta name' ) . '</th>
		<th>' . __( 'Value' ) . '</th>
	</tr>
	</thead>
	<tbody id="the-list" class="list:meta">
	<tr><td></td></tr>
	</tbody>
</table>'; //TBODY needed for list-manipulation JS
		return;
	}
	$count = 0;
?>
<table id="list-table">
	<thead>
	<tr>
		<th class="left"><?php _ex( 'Name', 'meta name' ) ?></th>
		<th><?php _e( 'Value' ) ?></th>
	</tr>
	</thead>
	<tbody id='the-list' class='list:meta'>
<?php
	foreach ( $meta as $entry )
		echo _list_meta_row( $entry, $count );
?>
	</tbody>
</table>
<?php
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param unknown_type $entry
 * @param unknown_type $count
 * @return unknown
 */
function _list_meta_row( $entry, &$count ) {
	static $update_nonce = false;

	if ( is_protected_meta( $entry['meta_key'], 'post' ) )
		return;

	if ( !$update_nonce )
		$update_nonce = wp_create_nonce( 'add-meta' );

	$r = '';
	++ $count;
	if ( $count % 2 )
		$style = 'alternate';
	else
		$style = '';

	if ( is_serialized( $entry['meta_value'] ) ) {
		if ( is_serialized_string( $entry['meta_value'] ) ) {
			// this is a serialized string, so we should display it
			$entry['meta_value'] = maybe_unserialize( $entry['meta_value'] );
		} else {
			// this is a serialized array/object so we should NOT display it
			--$count;
			return;
		}
	}

	$entry['meta_key'] = esc_attr($entry['meta_key']);
	$entry['meta_value'] = esc_textarea( $entry['meta_value'] ); // using a <textarea />
	$entry['meta_id'] = (int) $entry['meta_id'];

	$delete_nonce = wp_create_nonce( 'delete-meta_' . $entry['meta_id'] );

	$r .= "\n\t<tr id='meta-{$entry['meta_id']}' class='$style'>";
	$r .= "\n\t\t<td class='left'><label class='screen-reader-text' for='meta[{$entry['meta_id']}][key]'>" . __( 'Key' ) . "</label><input name='meta[{$entry['meta_id']}][key]' id='meta[{$entry['meta_id']}][key]' tabindex='6' type='text' size='20' value='{$entry['meta_key']}' />";

	$r .= "\n\t\t<div class='submit'>";
	$r .= get_submit_button( __( 'Delete' ), "delete:the-list:meta-{$entry['meta_id']}::_ajax_nonce=$delete_nonce deletemeta", "deletemeta[{$entry['meta_id']}]", false, array( 'tabindex' => '6' ) );
	$r .= "\n\t\t";
	$r .= get_submit_button( __( 'Update' ), "add:the-list:meta-{$entry['meta_id']}::_ajax_nonce-add-meta=$update_nonce updatemeta" , 'updatemeta', false, array( 'tabindex' => '6' ) );
	$r .= "</div>";
	$r .= wp_nonce_field( 'change-meta', '_ajax_nonce', false, false );
	$r .= "</td>";

	$r .= "\n\t\t<td><label class='screen-reader-text' for='meta[{$entry['meta_id']}][value]'>" . __( 'Value' ) . "</label><textarea name='meta[{$entry['meta_id']}][value]' id='meta[{$entry['meta_id']}][value]' tabindex='6' rows='2' cols='30'>{$entry['meta_value']}</textarea></td>\n\t</tr>";
	return $r;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 1.2.0
 */
function meta_form() {
	global $wpdb;
	$limit = (int) apply_filters( 'postmeta_form_limit', 30 );
	$keys = $wpdb->get_col( "
		SELECT meta_key
		FROM $wpdb->postmeta
		GROUP BY meta_key
		HAVING meta_key NOT LIKE '\_%'
		ORDER BY meta_key
		LIMIT $limit" );
	if ( $keys )
		natcasesort($keys);
?>
<p><strong><?php _e( 'Add New Custom Field:' ) ?></strong></p>
<table id="newmeta">
<thead>
<tr>
<th class="left"><label for="metakeyselect"><?php _ex( 'Name', 'meta name' ) ?></label></th>
<th><label for="metavalue"><?php _e( 'Value' ) ?></label></th>
</tr>
</thead>

<tbody>
<tr>
<td id="newmetaleft" class="left">
<?php if ( $keys ) { ?>
<select id="metakeyselect" name="metakeyselect" tabindex="7">
<option value="#NONE#"><?php _e( '&mdash; Select &mdash;' ); ?></option>
<?php

	foreach ( $keys as $key ) {
		echo "\n<option value='" . esc_attr($key) . "'>" . esc_html($key) . "</option>";
	}
?>
</select>
<input class="hide-if-js" type="text" id="metakeyinput" name="metakeyinput" tabindex="7" value="" />
<a href="#postcustomstuff" class="hide-if-no-js" onclick="jQuery('#metakeyinput, #metakeyselect, #enternew, #cancelnew').toggle();return false;">
<span id="enternew"><?php _e('Enter new'); ?></span>
<span id="cancelnew" class="hidden"><?php _e('Cancel'); ?></span></a>
<?php } else { ?>
<input type="text" id="metakeyinput" name="metakeyinput" tabindex="7" value="" />
<?php } ?>
</td>
<td><textarea id="metavalue" name="metavalue" rows="2" cols="25" tabindex="8"></textarea></td>
</tr>

<tr><td colspan="2" class="submit">
<?php submit_button( __( 'Add Custom Field' ), 'add:the-list:newmeta', 'addmeta', false, array( 'id' => 'addmetasub', 'tabindex' => '9' ) ); ?>
<?php wp_nonce_field( 'add-meta', '_ajax_nonce-add-meta', false ); ?>
</td></tr>
</tbody>
</table>
<?php

}

/**
 * {@internal Missing Short Description}}
 *
 * @since 0.71
 *
 * @param unknown_type $edit
 * @param unknown_type $for_post
 * @param unknown_type $tab_index
 * @param unknown_type $multi
 */
function touch_time( $edit = 1, $for_post = 1, $tab_index = 0, $multi = 0 ) {
	global $wp_locale, $post, $comment;

	if ( $for_post )
		$edit = ! ( in_array($post->post_status, array('draft', 'pending') ) && (!$post->post_date_gmt || '0000-00-00 00:00:00' == $post->post_date_gmt ) );

	$tab_index_attribute = '';
	if ( (int) $tab_index > 0 )
		$tab_index_attribute = " tabindex=\"$tab_index\"";

	// echo '<label for="timestamp" style="display: block;"><input type="checkbox" class="checkbox" name="edit_date" value="1" id="timestamp"'.$tab_index_attribute.' /> '.__( 'Edit timestamp' ).'</label><br />';

	$time_adj = current_time('timestamp');
	$post_date = ($for_post) ? $post->post_date : $comment->comment_date;
	$jj = ($edit) ? mysql2date( 'd', $post_date, false ) : gmdate( 'd', $time_adj );
	$mm = ($edit) ? mysql2date( 'm', $post_date, false ) : gmdate( 'm', $time_adj );
	$aa = ($edit) ? mysql2date( 'Y', $post_date, false ) : gmdate( 'Y', $time_adj );
	$hh = ($edit) ? mysql2date( 'H', $post_date, false ) : gmdate( 'H', $time_adj );
	$mn = ($edit) ? mysql2date( 'i', $post_date, false ) : gmdate( 'i', $time_adj );
	$ss = ($edit) ? mysql2date( 's', $post_date, false ) : gmdate( 's', $time_adj );

	$cur_jj = gmdate( 'd', $time_adj );
	$cur_mm = gmdate( 'm', $time_adj );
	$cur_aa = gmdate( 'Y', $time_adj );
	$cur_hh = gmdate( 'H', $time_adj );
	$cur_mn = gmdate( 'i', $time_adj );

	$month = "<select " . ( $multi ? '' : 'id="mm" ' ) . "name=\"mm\"$tab_index_attribute>\n";
	for ( $i = 1; $i < 13; $i = $i +1 ) {
		$monthnum = zeroise($i, 2);
		$month .= "\t\t\t" . '<option value="' . $monthnum . '"';
		if ( $i == $mm )
			$month .= ' selected="selected"';
		/* translators: 1: month number (01, 02, etc.), 2: month abbreviation */
		$month .= '>' . sprintf( __( '%1$s-%2$s' ), $monthnum, $wp_locale->get_month_abbrev( $wp_locale->get_month( $i ) ) ) . "</option>\n";
	}
	$month .= '</select>';

	$day = '<input type="text" ' . ( $multi ? '' : 'id="jj" ' ) . 'name="jj" value="' . $jj . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
	$year = '<input type="text" ' . ( $multi ? '' : 'id="aa" ' ) . 'name="aa" value="' . $aa . '" size="4" maxlength="4"' . $tab_index_attribute . ' autocomplete="off" />';
	$hour = '<input type="text" ' . ( $multi ? '' : 'id="hh" ' ) . 'name="hh" value="' . $hh . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';
	$minute = '<input type="text" ' . ( $multi ? '' : 'id="mn" ' ) . 'name="mn" value="' . $mn . '" size="2" maxlength="2"' . $tab_index_attribute . ' autocomplete="off" />';

	echo '<div class="timestamp-wrap">';
	/* translators: 1: month input, 2: day input, 3: year input, 4: hour input, 5: minute input */
	printf(__('%1$s%2$s, %3$s @ %4$s : %5$s'), $month, $day, $year, $hour, $minute);

	echo '</div><input type="hidden" id="ss" name="ss" value="' . $ss . '" />';

	if ( $multi ) return;

	echo "\n\n";
	foreach ( array('mm', 'jj', 'aa', 'hh', 'mn') as $timeunit ) {
		echo '<input type="hidden" id="hidden_' . $timeunit . '" name="hidden_' . $timeunit . '" value="' . $$timeunit . '" />' . "\n";
		$cur_timeunit = 'cur_' . $timeunit;
		echo '<input type="hidden" id="'. $cur_timeunit . '" name="'. $cur_timeunit . '" value="' . $$cur_timeunit . '" />' . "\n";
	}
?>

<p>
<a href="#edit_timestamp" class="save-timestamp hide-if-no-js button"><?php _e('OK'); ?></a>
<a href="#edit_timestamp" class="cancel-timestamp hide-if-no-js"><?php _e('Cancel'); ?></a>
</p>
<?php
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 1.5.0
 *
 * @param unknown_type $default
 */
function page_template_dropdown( $default = '' ) {
	$templates = get_page_templates();
	ksort( $templates );
	foreach (array_keys( $templates ) as $template )
		: if ( $default == $templates[$template] )
			$selected = " selected='selected'";
		else
			$selected = '';
	echo "\n\t<option value='".$templates[$template]."' $selected>$template</option>";
	endforeach;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 1.5.0
 *
 * @param unknown_type $default
 * @param unknown_type $parent
 * @param unknown_type $level
 * @return unknown
 */
function parent_dropdown( $default = 0, $parent = 0, $level = 0 ) {
	global $wpdb, $post_ID;
	$items = $wpdb->get_results( $wpdb->prepare("SELECT ID, post_parent, post_title FROM $wpdb->posts WHERE post_parent = %d AND post_type = 'page' ORDER BY menu_order", $parent) );

	if ( $items ) {
		foreach ( $items as $item ) {
			// A page cannot be its own parent.
			if (!empty ( $post_ID ) ) {
				if ( $item->ID == $post_ID ) {
					continue;
				}
			}
			$pad = str_repeat( '&nbsp;', $level * 3 );
			if ( $item->ID == $default)
				$current = ' selected="selected"';
			else
				$current = '';

			echo "\n\t<option class='level-$level' value='$item->ID'$current>$pad " . esc_html($item->post_title) . "</option>";
			parent_dropdown( $default, $item->ID, $level +1 );
		}
	} else {
		return false;
	}
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.0.0
 *
 * @param unknown_type $id
 * @return unknown
 */
function the_attachment_links( $id = false ) {
	$id = (int) $id;
	$post = & get_post( $id );

	if ( $post->post_type != 'attachment' )
		return false;

	$icon = wp_get_attachment_image( $post->ID, 'thumbnail', true );
	$attachment_data = wp_get_attachment_metadata( $id );
	$thumb = isset( $attachment_data['thumb'] );
?>
<form id="the-attachment-links">
<table>
	<col />
	<col class="widefat" />
	<tr>
		<th scope="row"><?php _e( 'URL' ) ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><?php echo esc_textarea( wp_get_attachment_url() ); ?></textarea></td>
	</tr>
<?php if ( $icon ) : ?>
	<tr>
		<th scope="row"><?php $thumb ? _e( 'Thumbnail linked to file' ) : _e( 'Image linked to file' ); ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo wp_get_attachment_url(); ?>"><?php echo $icon ?></a></textarea></td>
	</tr>
	<tr>
		<th scope="row"><?php $thumb ? _e( 'Thumbnail linked to page' ) : _e( 'Image linked to page' ); ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo get_attachment_link( $post->ID ) ?>" rel="attachment wp-att-<?php echo $post->ID; ?>"><?php echo $icon ?></a></textarea></td>
	</tr>
<?php else : ?>
	<tr>
		<th scope="row"><?php _e( 'Link to file' ) ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo wp_get_attachment_url(); ?>" class="attachmentlink"><?php echo basename( wp_get_attachment_url() ); ?></a></textarea></td>
	</tr>
	<tr>
		<th scope="row"><?php _e( 'Link to page' ) ?></th>
		<td><textarea rows="1" cols="40" type="text" class="attachmentlinks" readonly="readonly"><a href="<?php echo get_attachment_link( $post->ID ) ?>" rel="attachment wp-att-<?php echo $post->ID ?>"><?php the_title(); ?></a></textarea></td>
	</tr>
<?php endif; ?>
</table>
</form>
<?php
}

/**
 * Print out <option> html elements for role selectors
 *
 * @since 2.1.0
 *
 * @param string $selected slug for the role that should be already selected
 */
function wp_dropdown_roles( $selected = false ) {
	$p = '';
	$r = '';

	$editable_roles = get_editable_roles();

	foreach ( $editable_roles as $role => $details ) {
		$name = translate_user_role($details['name'] );
		if ( $selected == $role ) // preselect specified role
			$p = "\n\t<option selected='selected' value='" . esc_attr($role) . "'>$name</option>";
		else
			$r .= "\n\t<option value='" . esc_attr($role) . "'>$name</option>";
	}
	echo $p . $r;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.3.0
 *
 * @param unknown_type $size
 * @return unknown
 */
function wp_convert_hr_to_bytes( $size ) {
	$size = strtolower($size);
	$bytes = (int) $size;
	if ( strpos($size, 'k') !== false )
		$bytes = intval($size) * 1024;
	elseif ( strpos($size, 'm') !== false )
		$bytes = intval($size) * 1024 * 1024;
	elseif ( strpos($size, 'g') !== false )
		$bytes = intval($size) * 1024 * 1024 * 1024;
	return $bytes;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.3.0
 *
 * @param unknown_type $bytes
 * @return unknown
 */
function wp_convert_bytes_to_hr( $bytes ) {
	$units = array( 0 => 'B', 1 => 'kB', 2 => 'MB', 3 => 'GB' );
	$log = log( $bytes, 1024 );
	$power = (int) $log;
	$size = pow(1024, $log - $power);
	return $size . $units[$power];
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @return unknown
 */
function wp_max_upload_size() {
	$u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) );
	$p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) );
	$bytes = apply_filters( 'upload_size_limit', min($u_bytes, $p_bytes), $u_bytes, $p_bytes );
	return $bytes;
}

/**
 * Outputs the form used by the importers to accept the data to be imported
 *
 * @since 2.0.0
 *
 * @param string $action The action attribute for the form.
 */
function wp_import_upload_form( $action ) {
	$bytes = apply_filters( 'import_upload_size_limit', wp_max_upload_size() );
	$size = wp_convert_bytes_to_hr( $bytes );
	$upload_dir = wp_upload_dir();
	if ( ! empty( $upload_dir['error'] ) ) :
		?><div class="error"><p><?php _e('Before you can upload your import file, you will need to fix the following error:'); ?></p>
		<p><strong><?php echo $upload_dir['error']; ?></strong></p></div><?php
	else :
?>
<form enctype="multipart/form-data" id="import-upload-form" method="post" action="<?php echo esc_attr(wp_nonce_url($action, 'import-upload')); ?>">
<p>
<label for="upload"><?php _e( 'Choose a file from your computer:' ); ?></label> (<?php printf( __('Maximum size: %s' ), $size ); ?>)
<input type="file" id="upload" name="import" size="25" />
<input type="hidden" name="action" value="save" />
<input type="hidden" name="max_file_size" value="<?php echo $bytes; ?>" />
</p>
<?php submit_button( __('Upload file and import'), 'button' ); ?>
</form>
<?php
	endif;
}

/**
 * Add a meta box to an edit form.
 *
 * @since 2.5.0
 *
 * @param string $id String for use in the 'id' attribute of tags.
 * @param string $title Title of the meta box.
 * @param string $callback Function that fills the box with the desired content. The function should echo its output.
 * @param string|object $screen Optional. The screen on which to show the box (post, page, link). Defaults to current screen.
 * @param string $context Optional. The context within the page where the boxes should show ('normal', 'advanced').
 * @param string $priority Optional. The priority within the context where the boxes should show ('high', 'low').
 */
function add_meta_box( $id, $title, $callback, $screen = null, $context = 'advanced', $priority = 'default', $callback_args = null ) {
	global $wp_meta_boxes;

	if ( empty( $screen ) )
		$screen = get_current_screen();
	elseif ( is_string( $screen ) )
		$screen = convert_to_screen( $screen );

	$page = $screen->id;

	if ( !isset($wp_meta_boxes) )
		$wp_meta_boxes = array();
	if ( !isset($wp_meta_boxes[$page]) )
		$wp_meta_boxes[$page] = array();
	if ( !isset($wp_meta_boxes[$page][$context]) )
		$wp_meta_boxes[$page][$context] = array();

	foreach ( array_keys($wp_meta_boxes[$page]) as $a_context ) {
		foreach ( array('high', 'core', 'default', 'low') as $a_priority ) {
			if ( !isset($wp_meta_boxes[$page][$a_context][$a_priority][$id]) )
				continue;

			// If a core box was previously added or removed by a plugin, don't add.
			if ( 'core' == $priority ) {
				// If core box previously deleted, don't add
				if ( false === $wp_meta_boxes[$page][$a_context][$a_priority][$id] )
					return;
				// If box was added with default priority, give it core priority to maintain sort order
				if ( 'default' == $a_priority ) {
					$wp_meta_boxes[$page][$a_context]['core'][$id] = $wp_meta_boxes[$page][$a_context]['default'][$id];
					unset($wp_meta_boxes[$page][$a_context]['default'][$id]);
				}
				return;
			}
			// If no priority given and id already present, use existing priority
			if ( empty($priority) ) {
				$priority = $a_priority;
			// else if we're adding to the sorted priority, we don't know the title or callback. Grab them from the previously added context/priority.
			} elseif ( 'sorted' == $priority ) {
				$title = $wp_meta_boxes[$page][$a_context][$a_priority][$id]['title'];
				$callback = $wp_meta_boxes[$page][$a_context][$a_priority][$id]['callback'];
				$callback_args = $wp_meta_boxes[$page][$a_context][$a_priority][$id]['args'];
			}
			// An id can be in only one priority and one context
			if ( $priority != $a_priority || $context != $a_context )
				unset($wp_meta_boxes[$page][$a_context][$a_priority][$id]);
		}
	}

	if ( empty($priority) )
		$priority = 'low';

	if ( !isset($wp_meta_boxes[$page][$context][$priority]) )
		$wp_meta_boxes[$page][$context][$priority] = array();

	$wp_meta_boxes[$page][$context][$priority][$id] = array('id' => $id, 'title' => $title, 'callback' => $callback, 'args' => $callback_args);
}

/**
 * Meta-Box template function
 *
 * @since 2.5.0
 *
 * @param string|object $screen Screen identifier
 * @param string $context box context
 * @param mixed $object gets passed to the box callback function as first parameter
 * @return int number of meta_boxes
 */
function do_meta_boxes( $screen, $context, $object ) {
	global $wp_meta_boxes;
	static $already_sorted = false;

	if ( empty( $screen ) )
		$screen = get_current_screen();
	elseif ( is_string( $screen ) )
		$screen = convert_to_screen( $screen );

	$page = $screen->id;

	$hidden = get_hidden_meta_boxes( $screen );

	printf('<div id="%s-sortables" class="meta-box-sortables">', htmlspecialchars($context));

	$i = 0;
	do {
		// Grab the ones the user has manually sorted. Pull them out of their previous context/priority and into the one the user chose
		if ( !$already_sorted && $sorted = get_user_option( "meta-box-order_$page" ) ) {
			foreach ( $sorted as $box_context => $ids ) {
				foreach ( explode(',', $ids ) as $id ) {
					if ( $id && 'dashboard_browser_nag' !== $id )
						add_meta_box( $id, null, null, $screen, $box_context, 'sorted' );
				}
			}
		}
		$already_sorted = true;

		if ( !isset($wp_meta_boxes) || !isset($wp_meta_boxes[$page]) || !isset($wp_meta_boxes[$page][$context]) )
			break;

		foreach ( array('high', 'sorted', 'core', 'default', 'low') as $priority ) {
			if ( isset($wp_meta_boxes[$page][$context][$priority]) ) {
				foreach ( (array) $wp_meta_boxes[$page][$context][$priority] as $box ) {
					if ( false == $box || ! $box['title'] )
						continue;
					$i++;
					$style = '';
					$hidden_class = in_array($box['id'], $hidden) ? ' hide-if-js' : '';
					echo '<div id="' . $box['id'] . '" class="postbox ' . postbox_classes($box['id'], $page) . $hidden_class . '" ' . '>' . "\n";
					if ( 'dashboard_browser_nag' != $box['id'] )
						echo '<div class="handlediv" title="' . esc_attr__('Click to toggle') . '"><br /></div>';
					echo "<h3 class='hndle'><span>{$box['title']}</span></h3>\n";
					echo '<div class="inside">' . "\n";
					call_user_func($box['callback'], $object, $box);
					echo "</div>\n";
					echo "</div>\n";
				}
			}
		}
	} while(0);

	echo "</div>";

	return $i;

}

/**
 * Remove a meta box from an edit form.
 *
 * @since 2.6.0
 *
 * @param string $id String for use in the 'id' attribute of tags.
 * @param string|object $screen The screen on which to show the box (post, page, link).
 * @param string $context The context within the page where the boxes should show ('normal', 'advanced').
 */
function remove_meta_box($id, $screen, $context) {
	global $wp_meta_boxes;

	if ( empty( $screen ) )
		$screen = get_current_screen();
	elseif ( is_string( $screen ) )
		$screen = convert_to_screen( $screen );

	$page = $screen->id;

	if ( !isset($wp_meta_boxes) )
		$wp_meta_boxes = array();
	if ( !isset($wp_meta_boxes[$page]) )
		$wp_meta_boxes[$page] = array();
	if ( !isset($wp_meta_boxes[$page][$context]) )
		$wp_meta_boxes[$page][$context] = array();

	foreach ( array('high', 'core', 'default', 'low') as $priority )
		$wp_meta_boxes[$page][$context][$priority][$id] = false;
}

/**
 * Add a new section to a settings page.
 *
 * Part of the Settings API. Use this to define new settings sections for an admin page.
 * Show settings sections in your admin page callback function with do_settings_sections().
 * Add settings fields to your section with add_settings_field()
 *
 * The $callback argument should be the name of a function that echoes out any
 * content you want to show at the top of the settings section before the actual
 * fields. It can output nothing if you want.
 *
 * @since 2.7.0
 *
 * @global $wp_settings_sections Storage array of all settings sections added to admin pages
 *
 * @param string $id Slug-name to identify the section. Used in the 'id' attribute of tags.
 * @param string $title Formatted title of the section. Shown as the heading for the section.
 * @param string $callback Function that echos out any content at the top of the section (between heading and fields).
 * @param string $page The slug-name of the settings page on which to show the section. Built-in pages include 'general', 'reading', 'writing', 'discussion', 'media', etc. Create your own using add_options_page();
 */
function add_settings_section($id, $title, $callback, $page) {
	global $wp_settings_sections;

	if ( 'misc' == $page ) {
		_deprecated_argument( __FUNCTION__, '3.0', __( 'The miscellaneous options group has been removed. Use another settings group.' ) );
		$page = 'general';
	}

	if ( !isset($wp_settings_sections) )
		$wp_settings_sections = array();
	if ( !isset($wp_settings_sections[$page]) )
		$wp_settings_sections[$page] = array();
	if ( !isset($wp_settings_sections[$page][$id]) )
		$wp_settings_sections[$page][$id] = array();

	$wp_settings_sections[$page][$id] = array('id' => $id, 'title' => $title, 'callback' => $callback);
}

/**
 * Add a new field to a section of a settings page
 *
 * Part of the Settings API. Use this to define a settings field that will show
 * as part of a settings section inside a settings page. The fields are shown using
 * do_settings_fields() in do_settings-sections()
 *
 * The $callback argument should be the name of a function that echoes out the
 * html input tags for this setting field. Use get_option() to retrieve existing
 * values to show.
 *
 * @since 2.7.0
 *
 * @global $wp_settings_fields Storage array of settings fields and info about their pages/sections
 *
 * @param string $id Slug-name to identify the field. Used in the 'id' attribute of tags.
 * @param string $title Formatted title of the field. Shown as the label for the field during output.
 * @param string $callback Function that fills the field with the desired form inputs. The function should echo its output.
 * @param string $page The slug-name of the settings page on which to show the section (general, reading, writing, ...).
 * @param string $section The slug-name of the section of the settings page in which to show the box (default, ...).
 * @param array $args Additional arguments
 */
function add_settings_field($id, $title, $callback, $page, $section = 'default', $args = array()) {
	global $wp_settings_fields;

	if ( 'misc' == $page ) {
		_deprecated_argument( __FUNCTION__, '3.0', __( 'The miscellaneous options group has been removed. Use another settings group.' ) );
		$page = 'general';
	}

	if ( !isset($wp_settings_fields) )
		$wp_settings_fields = array();
	if ( !isset($wp_settings_fields[$page]) )
		$wp_settings_fields[$page] = array();
	if ( !isset($wp_settings_fields[$page][$section]) )
		$wp_settings_fields[$page][$section] = array();

	$wp_settings_fields[$page][$section][$id] = array('id' => $id, 'title' => $title, 'callback' => $callback, 'args' => $args);
}

/**
 * Prints out all settings sections added to a particular settings page
 *
 * Part of the Settings API. Use this in a settings page callback function
 * to output all the sections and fields that were added to that $page with
 * add_settings_section() and add_settings_field()
 *
 * @global $wp_settings_sections Storage array of all settings sections added to admin pages
 * @global $wp_settings_fields Storage array of settings fields and info about their pages/sections
 * @since 2.7.0
 *
 * @param string $page The slug name of the page whos settings sections you want to output
 */
function do_settings_sections($page) {
	global $wp_settings_sections, $wp_settings_fields;

	if ( !isset($wp_settings_sections) || !isset($wp_settings_sections[$page]) )
		return;

	foreach ( (array) $wp_settings_sections[$page] as $section ) {
		if ( $section['title'] )
			echo "<h3>{$section['title']}</h3>\n";
		call_user_func($section['callback'], $section);
		if ( !isset($wp_settings_fields) || !isset($wp_settings_fields[$page]) || !isset($wp_settings_fields[$page][$section['id']]) )
			continue;
		echo '<table class="form-table">';
		do_settings_fields($page, $section['id']);
		echo '</table>';
	}
}

/**
 * Print out the settings fields for a particular settings section
 *
 * Part of the Settings API. Use this in a settings page to output
 * a specific section. Should normally be called by do_settings_sections()
 * rather than directly.
 *
 * @global $wp_settings_fields Storage array of settings fields and their pages/sections
 *
 * @since 2.7.0
 *
 * @param string $page Slug title of the admin page who's settings fields you want to show.
 * @param section $section Slug title of the settings section who's fields you want to show.
 */
function do_settings_fields($page, $section) {
	global $wp_settings_fields;

	if ( !isset($wp_settings_fields) || !isset($wp_settings_fields[$page]) || !isset($wp_settings_fields[$page][$section]) )
		return;

	foreach ( (array) $wp_settings_fields[$page][$section] as $field ) {
		echo '<tr valign="top">';
		if ( !empty($field['args']['label_for']) )
			echo '<th scope="row"><label for="' . $field['args']['label_for'] . '">' . $field['title'] . '</label></th>';
		else
			echo '<th scope="row">' . $field['title'] . '</th>';
		echo '<td>';
		call_user_func($field['callback'], $field['args']);
		echo '</td>';
		echo '</tr>';
	}
}

/**
 * Register a settings error to be displayed to the user
 *
 * Part of the Settings API. Use this to show messages to users about settings validation
 * problems, missing settings or anything else.
 *
 * Settings errors should be added inside the $sanitize_callback function defined in
 * register_setting() for a given setting to give feedback about the submission.
 *
 * By default messages will show immediately after the submission that generated the error.
 * Additional calls to settings_errors() can be used to show errors even when the settings
 * page is first accessed.
 *
 * @since 3.0.0
 *
 * @global array $wp_settings_errors Storage array of errors registered during this pageload
 *
 * @param string $setting Slug title of the setting to which this error applies
 * @param string $code Slug-name to identify the error. Used as part of 'id' attribute in HTML output.
 * @param string $message The formatted message text to display to the user (will be shown inside styled <div> and <p>)
 * @param string $type The type of message it is, controls HTML class. Use 'error' or 'updated'.
 */
function add_settings_error( $setting, $code, $message, $type = 'error' ) {
	global $wp_settings_errors;

	if ( !isset($wp_settings_errors) )
		$wp_settings_errors = array();

	$new_error = array(
		'setting' => $setting,
		'code' => $code,
		'message' => $message,
		'type' => $type
	);
	$wp_settings_errors[] = $new_error;
}

/**
 * Fetch settings errors registered by add_settings_error()
 *
 * Checks the $wp_settings_errors array for any errors declared during the current
 * pageload and returns them.
 *
 * If changes were just submitted ($_GET['settings-updated']) and settings errors were saved
 * to the 'settings_errors' transient then those errors will be returned instead. This
 * is used to pass errors back across pageloads.
 *
 * Use the $sanitize argument to manually re-sanitize the option before returning errors.
 * This is useful if you have errors or notices you want to show even when the user
 * hasn't submitted data (i.e. when they first load an options page, or in admin_notices action hook)
 *
 * @since 3.0.0
 *
 * @global array $wp_settings_errors Storage array of errors registered during this pageload
 *
 * @param string $setting Optional slug title of a specific setting who's errors you want.
 * @param boolean $sanitize Whether to re-sanitize the setting value before returning errors.
 * @return array Array of settings errors
 */
function get_settings_errors( $setting = '', $sanitize = false ) {
	global $wp_settings_errors;

	// If $sanitize is true, manually re-run the sanitizisation for this option
	// This allows the $sanitize_callback from register_setting() to run, adding
	// any settings errors you want to show by default.
	if ( $sanitize )
		sanitize_option( $setting, get_option($setting));

	// If settings were passed back from options.php then use them
	// Ignore transients if $sanitize is true, we don't want the old values anyway
	if ( isset($_GET['settings-updated']) && $_GET['settings-updated'] && get_transient('settings_errors') ) {
		$settings_errors = get_transient('settings_errors');
		delete_transient('settings_errors');
	// Otherwise check global in case validation has been run on this pageload
	} elseif ( count( $wp_settings_errors ) ) {
		$settings_errors = $wp_settings_errors;
	} else {
		return;
	}

	// Filter the results to those of a specific setting if one was set
	if ( $setting ) {
		foreach ( (array) $settings_errors as $key => $details )
			if ( $setting != $details['setting'] )
				unset( $settings_errors[$key] );
	}
	return $settings_errors;
}

/**
 * Display settings errors registered by add_settings_error()
 *
 * Part of the Settings API. Outputs a <div> for each error retrieved by get_settings_errors().
 *
 * This is called automatically after a settings page based on the Settings API is submitted.
 * Errors should be added during the validation callback function for a setting defined in register_setting()
 *
 * The $sanitize option is passed into get_settings_errors() and will re-run the setting sanitization
 * on its current value.
 *
 * The $hide_on_update option will cause errors to only show when the settings page is first loaded.
 * if the user has already saved new values it will be hidden to avoid repeating messages already
 * shown in the default error reporting after submission. This is useful to show general errors like missing
 * settings when the user arrives at the settings page.
 *
 * @since 3.0.0
 *
 * @param string $setting Optional slug title of a specific setting who's errors you want.
 * @param boolean $sanitize Whether to re-sanitize the setting value before returning errors.
 * @param boolean $hide_on_update If set to true errors will not be shown if the settings page has already been submitted.
 */
function settings_errors( $setting = '', $sanitize = false, $hide_on_update = false ) {

	if ( $hide_on_update && ! empty( $_GET['settings-updated'] ) )
		return;

	$settings_errors = get_settings_errors( $setting, $sanitize );

	if ( ! is_array( $settings_errors ) )
		return;

	$output = '';
	foreach ( $settings_errors as $key => $details ) {
		$css_id = 'setting-error-' . $details['code'];
		$css_class = $details['type'] . ' settings-error';
		$output .= "<div id='$css_id' class='$css_class'> \n";
		$output .= "<p><strong>{$details['message']}</strong></p>";
		$output .= "</div> \n";
	}
	echo $output;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.7.0
 *
 * @param unknown_type $found_action
 */
function find_posts_div($found_action = '') {
?>
	<div id="find-posts" class="find-box" style="display:none;">
		<div id="find-posts-head" class="find-box-head"><?php _e('Find Posts or Pages'); ?></div>
		<div class="find-box-inside">
			<div class="find-box-search">
				<?php if ( $found_action ) { ?>
					<input type="hidden" name="found_action" value="<?php echo esc_attr($found_action); ?>" />
				<?php } ?>

				<input type="hidden" name="affected" id="affected" value="" />
				<?php wp_nonce_field( 'find-posts', '_ajax_nonce', false ); ?>
				<label class="screen-reader-text" for="find-posts-input"><?php _e( 'Search' ); ?></label>
				<input type="text" id="find-posts-input" name="ps" value="" />
				<input type="button" id="find-posts-search" value="<?php esc_attr_e( 'Search' ); ?>" class="button" /><br />

				<?php
				$post_types = get_post_types( array('public' => true), 'objects' );
				foreach ( $post_types as $post ) {
					if ( 'attachment' == $post->name )
						continue;
				?>
				<input type="radio" name="find-posts-what" id="find-posts-<?php echo esc_attr($post->name); ?>" value="<?php echo esc_attr($post->name); ?>" <?php checked($post->name, 'post'); ?> />
				<label for="find-posts-<?php echo esc_attr($post->name); ?>"><?php echo $post->label; ?></label>
				<?php
				} ?>
			</div>
			<div id="find-posts-response"></div>
		</div>
		<div class="find-box-buttons">
			<input id="find-posts-close" type="button" class="button alignleft" value="<?php esc_attr_e('Close'); ?>" />
			<?php submit_button( __( 'Select' ), 'button-primary alignright', 'find-posts-submit', false ); ?>
		</div>
	</div>
<?php
}

/**
 * Display the post password.
 *
 * The password is passed through {@link esc_attr()} to ensure that it
 * is safe for placing in an html attribute.
 *
 * @uses attr
 * @since 2.7.0
 */
function the_post_password() {
	global $post;
	if ( isset( $post->post_password ) ) echo esc_attr( $post->post_password );
}

/**
 * Get the post title.
 *
 * The post title is fetched and if it is blank then a default string is
 * returned.
 *
 * @since 2.7.0
 * @param int $post_id The post id. If not supplied the global $post is used.
 * @return string The post title if set
 */
function _draft_or_post_title( $post_id = 0 ) {
	$title = get_the_title($post_id);
	if ( empty($title) )
		$title = __('(no title)');
	return $title;
}

/**
 * Display the search query.
 *
 * A simple wrapper to display the "s" parameter in a GET URI. This function
 * should only be used when {@link the_search_query()} cannot.
 *
 * @uses attr
 * @since 2.7.0
 *
 */
function _admin_search_query() {
	echo isset($_REQUEST['s']) ? esc_attr( stripslashes( $_REQUEST['s'] ) ) : '';
}

/**
 * Generic Iframe header for use with Thickbox
 *
 * @since 2.7.0
 * @param string $title Title of the Iframe page.
 * @param bool $limit_styles Limit styles to colour-related styles only (unless others are enqueued).
 *
 */
function iframe_header( $title = '', $limit_styles = false ) {
	show_admin_bar( false );
	global $hook_suffix, $current_user, $admin_body_class, $wp_locale;
	$admin_body_class = preg_replace('/[^a-z0-9_-]+/i', '-', $hook_suffix);

	$current_screen = get_current_screen();

	_wp_admin_html_begin();
?>
<title><?php bloginfo('name') ?> &rsaquo; <?php echo $title ?> &#8212; <?php _e('WordPress'); ?></title>
<?php
wp_enqueue_style( 'colors' );
?>
<script type="text/javascript">
//<![CDATA[
addLoadEvent = function(func){if(typeof jQuery!="undefined")jQuery(document).ready(func);else if(typeof wpOnload!='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
function tb_close(){var win=window.dialogArguments||opener||parent||top;win.tb_remove();}
var userSettings = {
		'url': '<?php echo SITECOOKIEPATH; ?>',
		'uid': '<?php if ( ! isset($current_user) ) $current_user = wp_get_current_user(); echo $current_user->ID; ?>',
		'time':'<?php echo time() ?>'
	},
	ajaxurl = '<?php echo admin_url( 'admin-ajax.php', 'relative' ); ?>',
	pagenow = '<?php echo $current_screen->id; ?>',
	typenow = '<?php echo $current_screen->post_type; ?>',
	adminpage = '<?php echo $admin_body_class; ?>',
	thousandsSeparator = '<?php echo addslashes( $wp_locale->number_format['thousands_sep'] ); ?>',
	decimalPoint = '<?php echo addslashes( $wp_locale->number_format['decimal_point'] ); ?>',
	isRtl = <?php echo (int) is_rtl(); ?>;
//]]>
</script>
<?php
do_action('admin_enqueue_scripts', $hook_suffix);
do_action("admin_print_styles-$hook_suffix");
do_action('admin_print_styles');
do_action("admin_print_scripts-$hook_suffix");
do_action('admin_print_scripts');
do_action("admin_head-$hook_suffix");
do_action('admin_head');

$admin_body_class .= ' locale-' . sanitize_html_class( strtolower( str_replace( '_', '-', get_locale() ) ) );
?>
</head>
<body<?php if ( isset($GLOBALS['body_id']) ) echo ' id="' . $GLOBALS['body_id'] . '"'; ?> class="wp-admin no-js iframe <?php echo apply_filters( 'admin_body_class', '' ) . ' ' . $admin_body_class; ?>">
<script type="text/javascript">
//<![CDATA[
(function(){
var c = document.body.className;
c = c.replace(/no-js/, 'js');
document.body.className = c;
})();
//]]>
</script>
<?php
}

/**
 * Generic Iframe footer for use with Thickbox
 *
 * @since 2.7.0
 *
 */
function iframe_footer() {
	//We're going to hide any footer output on iframe pages, but run the hooks anyway since they output Javascript or other needed content. ?>
	<div class="hidden">
<?php
	do_action('admin_footer', '');
	do_action('admin_print_footer_scripts'); ?>
	</div>
<script type="text/javascript">if(typeof wpOnload=="function")wpOnload();</script>
</body>
</html>
<?php
}

function _post_states($post) {
	$post_states = array();
	if ( isset( $_REQUEST['post_status'] ) )
		$post_status = $_REQUEST['post_status'];
	else
		$post_status = '';

	if ( !empty($post->post_password) )
		$post_states['protected'] = __('Password protected');
	if ( 'private' == $post->post_status && 'private' != $post_status )
		$post_states['private'] = __('Private');
	if ( 'draft' == $post->post_status && 'draft' != $post_status )
		$post_states['draft'] = __('Draft');
	if ( 'pending' == $post->post_status && 'pending' != $post_status )
		/* translators: post state */
		$post_states['pending'] = _x('Pending', 'post state');
	if ( is_sticky($post->ID) )
		$post_states['sticky'] = __('Sticky');

	$post_states = apply_filters( 'display_post_states', $post_states );

	if ( ! empty($post_states) ) {
		$state_count = count($post_states);
		$i = 0;
		echo ' - ';
		foreach ( $post_states as $state ) {
			++$i;
			( $i == $state_count ) ? $sep = '' : $sep = ', ';
			echo "<span class='post-state'>$state$sep</span>";
		}
	}

	if ( get_post_format( $post->ID ) )
		echo ' - <span class="post-state-format">' . get_post_format_string( get_post_format( $post->ID ) ) . '</span>';
}

function _media_states( $post ) {
	$media_states = array();
	$stylesheet = get_option('stylesheet');

	if ( current_theme_supports( 'custom-header') ) {
		$meta_header = get_post_meta($post->ID, '_wp_attachment_is_custom_header', true );
		if ( ! empty( $meta_header ) && $meta_header == $stylesheet )
			$media_states[] = __( 'Header Image' );
	}

	if ( current_theme_supports( 'custom-background') ) {
		$meta_background = get_post_meta($post->ID, '_wp_attachment_is_custom_background', true );
		if ( ! empty( $meta_background ) && $meta_background == $stylesheet )
			$media_states[] = __( 'Background Image' );
	}

	$media_states = apply_filters( 'display_media_states', $media_states );

	if ( ! empty( $media_states ) ) {
		$state_count = count( $media_states );
		$i = 0;
		echo ' - ';
		foreach ( $media_states as $state ) {
			++$i;
			( $i == $state_count ) ? $sep = '' : $sep = ', ';
			echo "<span class='post-state'>$state$sep</span>";
		}
	}
}

/**
 * Test support for compressing JavaScript from PHP
 *
 * Outputs JavaScript that tests if compression from PHP works as expected
 * and sets an option with the result. Has no effect when the current user
 * is not an administrator. To run the test again the option 'can_compress_scripts'
 * has to be deleted.
 *
 * @since 2.8.0
 */
function compression_test() {
?>
	<script type="text/javascript">
	/* <![CDATA[ */
	var testCompression = {
		get : function(test) {
			var x;
			if ( window.XMLHttpRequest ) {
				x = new XMLHttpRequest();
			} else {
				try{x=new ActiveXObject('Msxml2.XMLHTTP');}catch(e){try{x=new ActiveXObject('Microsoft.XMLHTTP');}catch(e){};}
			}

			if (x) {
				x.onreadystatechange = function() {
					var r, h;
					if ( x.readyState == 4 ) {
						r = x.responseText.substr(0, 18);
						h = x.getResponseHeader('Content-Encoding');
						testCompression.check(r, h, test);
					}
				}

				x.open('GET', ajaxurl + '?action=wp-compression-test&test='+test+'&'+(new Date()).getTime(), true);
				x.send('');
			}
		},

		check : function(r, h, test) {
			if ( ! r && ! test )
				this.get(1);

			if ( 1 == test ) {
				if ( h && ( h.match(/deflate/i) || h.match(/gzip/i) ) )
					this.get('no');
				else
					this.get(2);

				return;
			}

			if ( 2 == test ) {
				if ( '"wpCompressionTest' == r )
					this.get('yes');
				else
					this.get('no');
			}
		}
	};
	testCompression.check();
	/* ]]> */
	</script>
<?php
}

/**
 * Echos a submit button, with provided text and appropriate class
 *
 * @since 3.1.0
 *
 * @param string $text The text of the button (defaults to 'Save Changes')
 * @param string $type The type of button. One of: primary, secondary, delete
 * @param string $name The HTML name of the submit button. Defaults to "submit". If no id attribute
 *               is given in $other_attributes below, $name will be used as the button's id.
 * @param bool $wrap True if the output button should be wrapped in a paragraph tag,
 * 			   false otherwise. Defaults to true
 * @param array|string $other_attributes Other attributes that should be output with the button,
 *                     mapping attributes to their values, such as array( 'tabindex' => '1' ).
 *                     These attributes will be output as attribute="value", such as tabindex="1".
 *                     Defaults to no other attributes. Other attributes can also be provided as a
 *                     string such as 'tabindex="1"', though the array format is typically cleaner.
 */
function submit_button( $text = null, $type = 'primary', $name = 'submit', $wrap = true, $other_attributes = null ) {
	echo get_submit_button( $text, $type, $name, $wrap, $other_attributes );
}

/**
 * Returns a submit button, with provided text and appropriate class
 *
 * @since 3.1.0
 *
 * @param string $text The text of the button (defaults to 'Save Changes')
 * @param string $type The type of button. One of: primary, secondary, delete
 * @param string $name The HTML name of the submit button. Defaults to "submit". If no id attribute
 *               is given in $other_attributes below, $name will be used as the button's id.
 * @param bool $wrap True if the output button should be wrapped in a paragraph tag,
 * 			   false otherwise. Defaults to true
 * @param array|string $other_attributes Other attributes that should be output with the button,
 *                     mapping attributes to their values, such as array( 'tabindex' => '1' ).
 *                     These attributes will be output as attribute="value", such as tabindex="1".
 *                     Defaults to no other attributes. Other attributes can also be provided as a
 *                     string such as 'tabindex="1"', though the array format is typically cleaner.
 */
function get_submit_button( $text = null, $type = 'primary', $name = 'submit', $wrap = true, $other_attributes = null ) {
	switch ( $type ) :
		case 'primary' :
		case 'secondary' :
			$class = 'button-' . $type;
			break;
		case 'delete' :
			$class = 'button-secondary delete';
			break;
		default :
			$class = $type; // Custom cases can just pass in the classes they want to be used
	endswitch;
	$text = ( null == $text ) ? __( 'Save Changes' ) : $text;

	// Default the id attribute to $name unless an id was specifically provided in $other_attributes
	$id = $name;
	if ( is_array( $other_attributes ) && isset( $other_attributes['id'] ) ) {
		$id = $other_attributes['id'];
		unset( $other_attributes['id'] );
	}

	$attributes = '';
	if ( is_array( $other_attributes ) ) {
		foreach ( $other_attributes as $attribute => $value ) {
			$attributes .= $attribute . '="' . esc_attr( $value ) . '" '; // Trailing space is important
		}
	} else if ( !empty( $other_attributes ) ) { // Attributes provided as a string
		$attributes = $other_attributes;
	}

	$button = '<input type="submit" name="' . esc_attr( $name ) . '" id="' . esc_attr( $id ) . '" class="' . esc_attr( $class );
	$button	.= '" value="' . esc_attr( $text ) . '" ' . $attributes . ' />';

	if ( $wrap ) {
		$button = '<p class="submit">' . $button . '</p>';
	}

	return $button;
}

function _wp_admin_html_begin() {
	$admin_html_class = ( is_admin_bar_showing() ) ? 'wp-toolbar' : '';
?>
<!DOCTYPE html>
<!--[if IE 8]>
<html xmlns="http://www.w3.org/1999/xhtml" class="ie8 <?php echo $admin_html_class; ?>" <?php do_action('admin_xml_ns'); ?> <?php language_attributes(); ?>>
<![endif]-->
<!--[if !(IE 8) ]><!-->
<html xmlns="http://www.w3.org/1999/xhtml" class="<?php echo $admin_html_class; ?>" <?php do_action('admin_xml_ns'); ?> <?php language_attributes(); ?>>
<!--<![endif]-->
<head>
<meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php echo get_option('blog_charset'); ?>" />
<?php
}

final class WP_Internal_Pointers {
	/**
	 * Initializes the new feature pointers.
	 *
	 * @since 3.3.0
	 *
	 * All pointers can be disabled using the following:
	 *     remove_action( 'admin_enqueue_scripts', array( 'WP_Internal_Pointers', 'enqueue_scripts' ) );
	 *
	 * Individual pointers (e.g. wp330_toolbar) can be disabled using the following:
	 *     remove_action( 'admin_print_footer_scripts', array( 'WP_Internal_Pointers', 'pointer_wp330_toolbar' ) );
	 */
	public static function enqueue_scripts( $hook_suffix ) {
		/*
		 * Register feature pointers
		 * Format: array( hook_suffix => pointer_id )
		 */

		$registered_pointers = array(
			'index.php'    => 'wp330_toolbar',
			'post-new.php' => 'wp330_media_uploader',
			'post.php'     => 'wp330_media_uploader',
			'themes.php'   => array( 'wp330_saving_widgets', 'wp340_customize_current_theme_link' ),
			'appearance_page_custom-header' => 'wp340_choose_image_from_library',
			'appearance_page_custom-background' => 'wp340_choose_image_from_library',
		);

		// Check if screen related pointer is registered
		if ( empty( $registered_pointers[ $hook_suffix ] ) )
			return;

		$pointers = (array) $registered_pointers[ $hook_suffix ];

		$caps_required = array(
			'wp330_media_uploader' => array( 'upload_files' ),
			'wp330_saving_widgets' => array( 'edit_theme_options', 'switch_themes' ),
			'wp340_customize_current_theme_link' => array( 'edit_theme_options' ),
			'wp340_choose_image_from_library' => array( 'edit_theme_options' ),
		);

		// Get dismissed pointers
		$dismissed = explode( ',', (string) get_user_meta( get_current_user_id(), 'dismissed_wp_pointers', true ) );

		$got_pointers = false;
		foreach ( array_diff( $pointers, $dismissed ) as $pointer ) {
			if ( isset( $caps_required[ $pointer ] ) ) {
				foreach ( $caps_required[ $pointer ] as $cap ) {
					if ( ! current_user_can( $cap ) )
						continue 2;
				}
			}

			// Bind pointer print function
			add_action( 'admin_print_footer_scripts', array( 'WP_Internal_Pointers', 'pointer_' . $pointer ) );
			$got_pointers = true;
		}

		if ( ! $got_pointers )
			return;

		// Add pointers script and style to queue
		wp_enqueue_style( 'wp-pointer' );
		wp_enqueue_script( 'wp-pointer' );
	}

	/**
	 * Print the pointer javascript data.
	 *
	 * @since 3.3.0
	 *
	 * @param string $pointer_id The pointer ID.
	 * @param string $selector The HTML elements, on which the pointer should be attached.
	 * @param array  $args Arguments to be passed to the pointer JS (see wp-pointer.dev.js).
	 */
	private static function print_js( $pointer_id, $selector, $args ) {
		if ( empty( $pointer_id ) || empty( $selector ) || empty( $args ) || empty( $args['content'] ) )
			return;

		?>
		<script type="text/javascript">
		//<![CDATA[
		(function($){
			var options = <?php echo json_encode( $args ); ?>, setup;

			if ( ! options )
				return;

			options = $.extend( options, {
				close: function() {
					$.post( ajaxurl, {
						pointer: '<?php echo $pointer_id; ?>',
						action: 'dismiss-wp-pointer'
					});
				}
			});

			setup = function() {
				$('<?php echo $selector; ?>').pointer( options ).pointer('open');
			};

			if ( options.position && options.position.defer_loading )
				$(window).bind( 'load.wp-pointers', setup );
			else
				$(document).ready( setup );

		})( jQuery );
		//]]>
		</script>
		<?php
	}

	public static function pointer_wp330_toolbar() {
		$content  = '<h3>' . __( 'New Feature: Toolbar' ) . '</h3>';
		$content .= '<p>' .  __( 'We&#8217;ve combined the admin bar and the old Dashboard header into one persistent toolbar. Hover over the toolbar items to see what&#8217;s new.' ) . '</p>';

		if ( is_multisite() && is_super_admin() )
			$content .= '<p>' . __( 'Network Admin is now located in the My Sites menu.' ) . '</p>';

		WP_Internal_Pointers::print_js( 'wp330_toolbar', '#wpadminbar', array(
			'content'  => $content,
			'position' => array( 'edge' => 'top', 'align' => 'center' ),
		) );
	}

	/**
	 * Print 'Updated Media Uploader' for 3.3.0.
	 *
	 * @since 3.3.0
	 */
	public static function pointer_wp330_media_uploader() {
		$content  = '<h3>' . __( 'Updated Media Uploader' ) . '</h3>';
		$content .= '<p>' . __( 'The single media icon now launches the uploader for all file types, and the new drag and drop interface makes uploading a breeze.' ) . '</p>';

		WP_Internal_Pointers::print_js( 'wp330_media_uploader', '#content-add_media', array(
			'content'  => $content,
			'position' => array( 'edge' => is_rtl() ? 'right' : 'left', 'align' => 'center' ),
		) );
	}

	/**
	 * Print 'New Feature: Saving Widgets' for 3.3.0.
	 *
	 * @since 3.3.0
	 */
	public static function pointer_wp330_saving_widgets() {
		$content  = '<h3>' . __( 'New Feature: Saving Widgets' ) . '</h3>';
		$content .= '<p>' . __( 'If you change your mind and revert to your previous theme, we&#8217;ll put the widgets back the way you had them.' ) . '</p>';

		WP_Internal_Pointers::print_js( 'wp330_saving_widgets', '#message2', array(
			'content'  => $content,
			'position' => array( 'edge' => 'top', 'align' => is_rtl() ? 'right' : 'left' ),
		) );
	}

	/**
	 * Print 'New Feature: Current Theme Customize Link' for 3.4.0.
	 *
	 * @since 3.4.0
	 */
	public static function pointer_wp340_customize_current_theme_link() {
		$content  = '<h3>' . __( 'New Feature: Customizer' ) . '</h3>';
		$content .= '<p>' . __( 'Click Customize to change the header, background, title and menus of the current theme, all in one place.' ) . '</p>';
		$content .= '<p>' . __( 'Click the Live Preview links in the Available Themes list below to customize and preview another theme before activating it.' ) . '</p>';

		WP_Internal_Pointers::print_js( 'wp340_customize_current_theme_link', '#customize-current-theme-link', array(
			'content'  => $content,
			'position' => array( 'edge' => 'top', 'align' => is_rtl() ? 'right' : 'left', 'offset' => is_rtl() ? '32 0' : '-32 0' ),
		) );
	}

	/**
	 * Print 'New Feature: Choose Image from Library' for 3.4.0.
	 *
	 * @since 3.4.0
	 */
	public static function pointer_wp340_choose_image_from_library() {
		$content  = '<h3>' . __( 'New Feature: Choose Image from Library' ) . '</h3>';
		$content .= '<p>' . __( 'Want to use an image you uploaded earlier? Select it from your media library instead of uploading it again.' ) . '</p>';

		WP_Internal_Pointers::print_js( 'wp340_choose_image_from_library', '#choose-from-library-link', array(
			'content'  => $content,
			'position' => array( 'edge' => 'top', 'align' => is_rtl() ? 'right' : 'left', 'defer_loading' => true ),
		) );
	}

	/**
	 * Prevents new users from seeing existing 'new feature' pointers.
	 *
	 * @since 3.3.0
	 */
	public static function dismiss_pointers_for_new_users( $user_id ) {
		add_user_meta( $user_id, 'dismissed_wp_pointers', 'wp330_toolbar,wp330_media_uploader,wp330_saving_widgets,wp340_choose_image_from_library,wp340_customize_current_theme_link' );
	}
}

add_action( 'admin_enqueue_scripts', array( 'WP_Internal_Pointers', 'enqueue_scripts'                ) );
add_action( 'user_register',         array( 'WP_Internal_Pointers', 'dismiss_pointers_for_new_users' ) );

/**
 * Convert a screen string to a screen object
 *
 * @since 3.0.0
 *
 * @param string $hook_name The hook name (also known as the hook suffix) used to determine the screen.
 * @return WP_Screen Screen object.
 */
function convert_to_screen( $hook_name ) {
	if ( ! class_exists( 'WP_Screen' ) ) {
		_doing_it_wrong( 'convert_to_screen(), add_meta_box()', __( "Likely direct inclusion of wp-admin/includes/template.php in order to use add_meta_box(). This is very wrong. Hook the add_meta_box() call into the add_meta_boxes action instead." ), '3.3' );
		return (object) array( 'id' => '_invalid', 'base' => '_are_belong_to_us' );
	}

	return WP_Screen::get( $hook_name );
}