/**
* Creates a new instance of this class if one hasn't already been made
* and then returns the single instance of this class.
*
* @return RegenerateThumbnails
*/
public static function instance()
{
if (!isset(self::$instance)) {
self::$instance = new RegenerateThumbnails();
self::$instance->setup();
}
return self::$instance;
}
function options_tab($tab)
{
echo '<form method="post" action="options.php" >';
wp_nonce_field('options.php');
echo '<div style="float:left;width:330px;">';
$this->show_thumb_sizes();
echo '</div>';
echo '<div style="float:left;margin-top:50px;">';
settings_fields($tab);
do_settings_sections($tab);
submit_button('Add Image Size');
echo '</div>';
echo '</form>';
echo '<div class="clear"></div>';
if (class_exists('RegenerateThumbnails')) {
$regen = new RegenerateThumbnails();
$regen->regenerate_interface();
} else {
_e('<h3>Regenerate Thumbnails</h3>');
printf(__('<p>Install Regenerate Thumbnails to crop all images that you have uploaded to your blog. This is useful if you\'ve changed any of the thumbnail dimensions above or on the <a href="%s">media settings page</a></p>'), admin_url('options-media.php'));
$url = current_user_can('install_plugins') ? wp_nonce_url(self_admin_url('update.php?action=install-plugin&plugin=regenerate-thumbnails'), 'install-plugin_regenerate-thumbnails') : 'http://wordpress.org/extend/plugins/regenerate-thumbnails/';
_e('<a href="' . esc_url($url) . '" class="button-secondary">Install Regenerate Thumbnails</a>');
}
}