vc_load_default_params

Fires after WPBakery registers its built-in parameter types (textfield, textarea, dropdown, etc.). Use this hook to register custom shortcode parameter types via vc_add_shortcode_param().

Parameters

This action has no parameters.

Usage

add_action( 'vc_load_default_params', 'wpb_register_custom_params' );

function wpb_register_custom_params() {
    vc_add_shortcode_param( 'my_custom_param', 'my_custom_param_field' );
}

function my_custom_param_field( $settings, $value ) {
    return '<div class="my_param_block">'
        . '<input name="' . esc_attr( $settings['param_name'] ) . '"'
        . ' class="wpb_vc_param_value"'
        . ' type="text"'
        . ' value="' . esc_attr( $value ) . '" />'
        . '</div>';
}

Source

File: include/classes/editors/class-vc-edit-form-fields.php