public static function InstallOrUninstallFont($install)
 {
     $count = GFontsDB::CountFonts();
     if ($install && $count >= 10) {
         echo '<span style="color: red;">' . __('You can install maximum 10 fonts with Free Version. If you need more please purchase PRO. <a href="http://powerposts.net" target="_blank" >Click here for PRO</a>', self::PLUGIN_SLUG) . '</span>';
         die;
     }
     $serializedItems = get_option(self::PLUGIN_OPTION_FONT_DATABASE);
     if (!$serializedItems) {
         echo '<span style="color: red;">' . __('Could not find font list. Consider updating database?', self::PLUGIN_SLUG) . '</span>';
         die;
     } else {
         $fontname = isset($_POST['name']) ? $_POST['name'] : false;
         if ($fontname === false) {
             echo '<span style="color: red;">' . __('Font name is not set.', self::PLUGIN_SLUG) . '</span>';
             die;
         }
         $items = unserialize($serializedItems);
         foreach ($items as $item) {
             if ($item['name'] == $fontname) {
                 $variant = isset($_POST['variant']) ? $_POST['variant'] : false;
                 if ($variant === false) {
                     echo '<span style="color: red;">' . __('Font variant is not set.', self::PLUGIN_SLUG) . '</span>';
                     die;
                 } else {
                     if ($install) {
                         $usedin = GFontsDB::InstallFont($fontname, $variant, implode(",", $item['subsets']));
                     } else {
                         $usedin = GFontsDB::UninstallFont($fontname, $variant, implode(",", $item['subsets']));
                     }
                     $usedtext = "";
                     if ($usedin > 0) {
                         $usedtext = ' (' . sprintf(_n('used in %d post', 'used in %d posts', $usedin, self::PLUGIN_SLUG), $usedin) . ')';
                     }
                     if ($install) {
                         printf('<a href="#" onclick="return GfUninstallFont(\'%s\', \'%s\', this);">%s %s %s%s</a>', $fontname, $variant, __('Uninstall', self::PLUGIN_SLUG), $fontname, $variant, $usedtext);
                     } else {
                         printf('<a href="#" onclick="return GfInstallFont(\'%s\', \'%s\', this);">%s %s %s%s</a>', $fontname, $variant, __('Install', self::PLUGIN_SLUG), $fontname, $variant, $usedtext);
                     }
                     die;
                 }
             }
         }
         echo '<span style="color: red;">' . __('Could not find specified font.', self::PLUGIN_SLUG) . '</span>';
         die;
     }
 }