custom mce

// CUSTOMIZE TinyMCE 
    function my_mce_buttons_2( $buttons ) {
        array_unshift( $buttons, 'styleselect' );
        return $buttons;
    }
    // Register our callback to the appropriate filter
    add_filter('mce_buttons_2', 'my_mce_buttons_2');

    function my_theme_add_editor_styles() {
        add_editor_style( '/assets/css/custom-editor-style.css' );
    }
    add_action( 'after_setup_theme', 'my_theme_add_editor_styles' );

    function my_mce_before_init_insert_formats( $init_array ) {  
        $style_formats = array(  
            // Each array child is a format with it's own settings
            array(  
                'title' => 'Blue Text',  
                'block' => 'span',  
                'classes' => 'blue',
                'wrapper' => true,
                
            ),
            array(  
                'title' => 'Leader Title',  
                'block' => 'p',  
                'classes' => 'lead',
                'wrapper' => false,
                
            ),
            array(  
                'title' => 'h2.5',  
                'block' => 'h1',  
                'classes' => 'h2-5',
                'wrapper' => false,
                
            ),

        );  
        $init_array['style_formats'] = json_encode( $style_formats );  
        
        return $init_array;  
    } 
    add_filter( 'tiny_mce_before_init', 'my_mce_before_init_insert_formats' );