add settings page with relevant variables

fulcrm_shoppingcart.admin.inc

@@ -1,6 +1,13 @@
 <?php
 
 function fulcrm_shoppingcart_admin_form_submit( $form, &$form_state ) {
+    variable_set( 'fulcrm_shoppingcart_proceed_text', $form_state[ 'values' ][ 'proceed_text' ] );
+    variable_set( 'fulcrm_shoppingcart_proceed_url', $form_state[ 'values' ][ 'proceed_url' ] );
+
+    variable_set( 'fulcrm_shoppingcart_success_url', $form_state[ 'values' ][ 'success_url' ] );
+    variable_set( 'fulcrm_shoppingcart_failure_url', $form_state[ 'values' ][ 'failure_url' ] );
+
+    drupal_set_message( t('Settings saved.'), 'status' );
 }
 
 function fulcrm_shoppingcart_admin_form( $form, &$form_state ) {
@@ -11,6 +18,35 @@ function fulcrm_shoppingcart_admin_form( $form, &$form_state ) {
                               '#description' => '',
                               );
 
+    $form[ 'proceed_text' ] = array( '#type' => 'textfield',
+                                     '#title' => 'Link text to carry on shopping',
+                                     '#default_value' => variable_get( 'fulcrm_shoppingcart_proceed_text', 'Keep shopping' ),
+                                     );
+    $form[ 'proceed_url' ] = array( '#type' => 'textfield',
+                                    '#title' => 'URL to go to to carry on shopping',
+                                    '#default_value' => variable_get( 'fulcrm_shoppingcart_proceed_url', url( '<front>', array( 'absolute' => true ) ) ),
+                                    );
+
+    $form[ 'fulcrm_url' ] = array( '#type' => 'fieldset',
+                                   '#title' => 'Return URLs',
+                                   );
+
+    $form[ 'fulcrm_url' ][ 'success_url' ] = array( '#type' => 'textfield',
+                                                    '#title' => 'URL to return to upon transaction success',
+                                                    '#default_value' => variable_get( 'fulcrm_shoppingcart_success_url', url( '<front>', array( 'absolute' => true ) ) ),
+                                                    );
+
+    $form[ 'fulcrm_url' ][ 'failure_url' ] = array( '#type' => 'textfield',
+                                                    '#title' => 'URL to return to upon transaction failure',
+                                                    '#default_value' => variable_get( 'fulcrm_shoppingcart_failure_url', url( '<front>', array( 'absolute' => true ) ) ),
+                                                    );
+
+    $form[ 'actions' ] = array( '#type' => 'actions' );
+    $form[ 'actions' ][ 'save' ] = array( '#type' => 'submit',
+                                          '#value' => t('Save'),
+                                          '#submit' => array( 'fulcrm_shoppingcart_admin_form_submit' ),
+                                          );
+
     return $form;
 }