add fulcrm_shoppingcart_experience variable

fulcrm_shoppingcart.admin.inc

@@ -7,6 +7,8 @@ function fulcrm_shoppingcart_admin_form_submit( $form, &$form_state ) {
     variable_set( 'fulcrm_shoppingcart_success_url', $form_state[ 'values' ][ 'success_url' ] );
     variable_set( 'fulcrm_shoppingcart_failure_url', $form_state[ 'values' ][ 'failure_url' ] );
 
+    variable_set( 'fulcrm_shoppingcart_experience', $form_state[ 'values' ][ 'experience' ] );
+
     drupal_set_message( t('Settings saved.'), 'status' );
 }
 
@@ -27,6 +29,16 @@ function fulcrm_shoppingcart_admin_form( $form, &$form_state ) {
                                     '#default_value' => variable_get( 'fulcrm_shoppingcart_proceed_url', url( '<front>', array( 'absolute' => true ) ) ),
                                     );
 
+    $form[ 'experience' ] = array( '#type' => 'select',
+                                   '#title' => t('Shopping Experience'),
+                                   '#options' => array( 'nouser' => t('Only Guests can "Checkout"'),
+                                                        'guest' => t('Allow Guests to "Checkout"'),
+                                                        'user' => t('Must Login to "Checkout"'),
+                                                        'force' => t('Must Login to "Add to Cart"'),
+                                                        ),
+                                   '#default_value' => variable_get( 'fulcrm_shoppingcart_experience', 'force' ),
+                                   );
+
     $form[ 'fulcrm_url' ] = array( '#type' => 'fieldset',
                                    '#title' => 'Return URLs',
                                    );