我创建了一个TinyMCE 风格dropdown 对于TinyMCE WordPress编辑器。

这些格式在编辑器上按预期显示，但当下拉菜单展开以从样式中选择时，它们显示为已禁用-是否有任何原因？我的代码附在下面。

function new_mce_button($buttons) {

    array_unshift($buttons, \'styleselect\');
    return $buttons;

}
add_filter(\'mce_buttons_2\', \'new_mce_button\');

/**
 * Callback function to filter the MCE settings
 */
function custom_formats( $init_array ) {  

    $style_formats = array(
        array(
            \'title\' => \'White Button\',
            \'selector\' => \'a\',
            \'classes\' => \'cta wht\',
        ),
        array(
            \'title\' => \'Grey Button\',
            \'selector\' => \'a\',
            \'classes\' => \'cta gry\'
        ),
        array(
            \'title\' => \'Light Blue Button\',
            \'selector\' => \'a\',
            \'classes\' => \'cta lblue\'
        ),
        array(
            \'title\' => \'Dark Blue Button\',
            \'selector\' => \'a\',
            \'classes\' => \'cta dblue\'
        ),
    );  

    $init_array[\'style_formats\'] = json_encode( $style_formats );  

    return $init_array;  

} 
add_filter( \'tiny_mce_before_init\', \'custom_formats\' );