Ticket #302: themes.php

<?php

/* Contains custom code */

require_once('admin.php');

$themes = get_themes();
$ct = current_theme_info();
$allowed_themes = get_site_allowed_themes();
if( $allowed_themes == false )
    $allowed_themes = array();

$blog_allowed_themes = wpmu_get_blog_allowedthemes();
if( is_array( $blog_allowed_themes ) )
    $allowed_themes = array_merge( $allowed_themes, $blog_allowed_themes );
if( $blog_id != 1 )
    unset( $allowed_themes[ "h3" ] );

if( isset( $allowed_themes[ wp_specialchars( $ct->stylesheet ) ] ) == false )
    $allowed_themes[ wp_specialchars( $ct->stylesheet ) ] = true;

reset( $themes );
foreach( $themes as $key => $theme ) {
    if( isset( $allowed_themes[ wp_specialchars( $theme[ 'Stylesheet' ] ) ] ) == false ) {
        unset( $themes[ $key ] );
    }
}
reset( $themes );

if ( isset($_GET['action']) ) {
    check_admin_referer('switch-theme_' . $_GET['template']);

    if ('activate' == $_GET['action']) {
        $found = false;
        while( list( $key, $details ) = each( $themes ) ) { 
            if( $details[ 'Template' ] == $_GET['template'] && $details[ 'Stylesheet' ] == $_GET['stylesheet'] ) {
                $found = true;
                break;
            }
        }
        if( $found == true ) {
            if ( isset($_GET['template']) )
                update_option('template', $_GET['template']);

            if ( isset($_GET['stylesheet']) )
                update_option('stylesheet', $_GET['stylesheet']);

            do_action('switch_theme', get_current_theme());

            wp_redirect('themes.php?activated=true');
        } else {
            wp_redirect('themes.php');
        }
        exit;
    }
}

$title = __('Manage Themes');
$parent_file = 'themes.php';
require_once('admin-header.php');
if( is_site_admin() ) {
    ?><div id="message0" class="updated fade"><p><?php _e('Administrator: new themes must be activated in the <a href="wpmu-themes.php">Themes Admin</a> page before they appear here.'); ?></p></div><?php
}
?>

<?php if ( ! validate_current_theme() ) : ?>
<div id="message1" class="updated fade"><p><?php _e('The active theme is broken.  Reverting to the default theme.'); ?></p></div>

<?php elseif ( isset($_GET['activated']) ) : ?>
<div id="message2" class="updated fade"><p><?php printf(__('New theme activated. <a href="%s">View site &raquo;</a>'), get_bloginfo('url') . '/'); ?></p></div>
<?php endif; ?>


<div class="wrap">
<h2><?php _e('Current Theme'); ?></h2>
<div id="currenttheme">
<?php if ( $ct->screenshot ) : ?>
<img src="<?php echo get_option('siteurl') . '/' . $ct->stylesheet_dir . '/' . $ct->screenshot; ?>" alt="<?php _e('Current theme preview'); ?>" />

<?php endif; ?>
<h3><?php printf(__('%1$s %2$s by %3$s'), $ct->title, $ct->version, $ct->author) ; ?></h3>
<p><?php echo $ct->description; ?></p>
</div>

<br style="clear: both" />
<h2><?php _e('Available Themes'); ?></h2>
<?php
// begin xiando(tm) theme modification
$totalthemes = count($themes);
if ( 1 < $totalthemes ) {
// end xiando(tm) theme modification
?>

<?php
$style = '';

$theme_names = array_keys($themes);
natcasesort($theme_names);

$theme_names = array_keys($themes);
natcasesort($theme_names);
                        
// begin xiando(tm) theme modification
if($_GET['fromtheme']){
        $startshowing=$_GET['fromtheme'];
        $stopshowing=$startshowing+16;
}else{  
        $startshowing=0; $stopshowing=16;
}
$i=0;
// end xiando(tm) theme modification

foreach ($theme_names as $theme_name) {
    if ( $theme_name == $ct->name )
        continue;

// begin xiando(tm) theme modification
$i++;
if ( $i < $stopshowing && $i > $startshowing ) {
// end xiando(tm) theme modification

    $template = $themes[$theme_name]['Template'];
    $stylesheet = $themes[$theme_name]['Stylesheet'];
    $title = $themes[$theme_name]['Title'];
    $version = $themes[$theme_name]['Version'];
    $description = $themes[$theme_name]['Description'];
    $author = $themes[$theme_name]['Author'];
    $screenshot = $themes[$theme_name]['Screenshot'];
    $stylesheet_dir = $themes[$theme_name]['Stylesheet Dir'];
    $activate_link = wp_nonce_url("themes.php?action=activate&amp;template=$template&amp;stylesheet=$stylesheet", 'switch-theme_' . $template);
?>

<div class="available-theme">
<h3><a href="<?php echo $activate_link; ?>"><?php echo "$title"; ?></a></h3>

<a href="<?php echo $activate_link; ?>" class="screenshot">
<?php if ( $screenshot ) : ?>
<img src="<?php echo get_option('siteurl') . '/' . $stylesheet_dir . '/' . $screenshot; ?>" alt="" />
<?php endif; ?>
</a>

<p><?php echo $description; ?></p>

</div>
<?php
// begin xiando(tm) theme modification
$thispageend=$i; } //end visible themes loop
// end xiando(tm) theme modification
?>
<?php } // end foreach theme_names ?>

<?php
// begin xiando(tm) theme modification

$pages=round($totalthemes/15);
$viewedpage = round(($thispageend+1)/15);

$wTmp = '<br style="clear:both;" /><p style="text-align:center;font-size:20px;">';
$wTmp .= 'Page ' . $viewedpage . ' of ' . $pages . '<br />';
if ( $thispageend-16 > 0 ) {
        $wTmp .= '<a href="themes.php?fromtheme=' . ($thispageend-30) . '"><<< Previous Page</a>   ';
}
if ( $thispageend+1 < ($totalthemes) ){
        $wTmp .= '<a href="themes.php?fromtheme=' . ($thispageend) . '">Next Page >>></a>';
}
$wTmp .= '<br />';
$i=0; while (( $i < $pages )) {
  $wTmp .= '<a href="themes.php?fromtheme=' . ($i*15) . '"> '. ($i+1) . ' </a>  ';
  $i++;
}
$wTmp .= '</p>';
echo $wTmp;
// end xiando(tm) theme modification
?>

<?php } ?>

<?php
// List broken themes, if any.
$broken_themes = get_broken_themes();
if ( is_site_admin() && count($broken_themes) ) {
?>

<h2><?php _e('Broken Themes'); ?> (Site admin only)</h2>
<p><?php _e('The following themes are installed but incomplete.  Themes must have a stylesheet and a template.'); ?></p>

<table width="100%" cellpadding="3" cellspacing="3">
    <tr>
        <th><?php _e('Name'); ?></th>
        <th><?php _e('Description'); ?></th>
    </tr>

<?php
    $theme = '';

    $theme_names = array_keys($broken_themes);
    natcasesort($theme_names);

    foreach ($theme_names as $theme_name) {
        $title = $broken_themes[$theme_name]['Title'];
        $description = $broken_themes[$theme_name]['Description'];

        $theme = ('class="alternate"' == $theme) ? '' : 'class="alternate"';
        echo "
        <tr $theme>
             <td>$title</td>
             <td>$description</td>
        </tr>";
    }
?>
</table>
<?php
}
?>
<br clear="all" />
</div>

<?php require('admin-footer.php'); ?>