code review feedback.

includes/datastream.version.inc

@@ -252,48 +252,35 @@ function islandora_datastream_version_replace_form($form, &$form_state, Abstract
   $form_state['object_id'] = $object->id;
   $form_state['dsid'] = $datastream->id;
   $form_state['object'] = $object;
-
+  $extensions = islandora_get_datastreams_requirements_from_models($object->models);
+  $ext = array(NULL);
+  if(isset($extensions[$datastream->id]['mime'])) {
+    $ext = array(implode(",", $extensions[$datastream->id]['mime']));
+  }
   $upload_size = min((int) ini_get('post_max_size'), (int) ini_get('upload_max_filesize'));
   return array(
-    '#redirect' => "islandora/object/{$object->id}",
-    '#attributes' => array(
-      'enctype' => 'multipart/form-data',
-    ),
     'dsid_fieldset' => array(
       '#type' => 'fieldset',
-      '#title' => 'Update datastream with latest version',
+      '#title' => t("Update datastream with latest version"),
       '#collapsible' => FALSE,
       '#collapsed' => FALSE,
       'dsid' => array(
-        '#disabled' => TRUE,
-        '#default_value' => $datastream->id,
-        '#title' => 'Datastream ID',
-        '#description' => t("The current ID for this stream that is unique to this object."),
-        '#type' => 'textfield',
-        '#size' => 64,
-        '#maxlength' => 64,
-        '#required' => TRUE,
+        '#type' => 'markup',
+        '#markup' => "<div>DSID: <b>$datastream->id</b></div>",
       ),
       'label' => array(
-        '#disabled' => TRUE,
-        '#default_value' => $datastream->label,
-        '#title' => 'Datastream Label',
-        '#required' => TRUE,
-        '#size' => 64,
-        '#maxlength' => 64,
-        '#description' => t('The DSID human-readable label'),
-        '#type' => 'textfield',
+        '#type' => 'markup',
+        '#markup' => "<div>Label: <b>$datastream->label</b></div>",
       ),
       'file' => array(
         '#type' => 'managed_file',
         '#required' => TRUE,
         '#title' => t('Upload Document'),
-        '#size' => 48,
-        '#description' => t('Select a file to upload.<br/>Files must be less than <b>@size MB.</b>', array('@size' => $upload_size)),
-        '#default_value' => isset($form_state['values']['files']) ? $form_state['values']['files'] : NULL,
+        '#size' => 64,
+        '#description' => t('Select a file to upload.<br/>Files must be less than <strong>@size MB.</strong>', array('@size' => $upload_size)),
         '#upload_location' => 'temporary://',
         '#upload_validators' => array(
-          'file_validate_extensions' => array(NULL),
+          'file_validate_extensions' => $ext,
           // Assume its specified in MB.
           'file_validate_size' => array($upload_size * 1024 * 1024),
         ),
@@ -329,12 +316,19 @@ function islandora_datastream_version_replace_form_submit($form, &$form_state) {
     file_delete($file);
   }
   catch (exception $e) {
-    drupal_set_message(t('@message', array('@message' => check_plain($e->getMessage()))), 'error');
+    drupal_set_message(t('An error occurred during datastream updates. See watchlog for more information.'), 'error');
+    watchdog('islandora',
+      'Failed to add new versionable datastream.</br>code: @code<br/>message: @msg',
+      array(
+        '@code' => $e->getCode(),
+        '@msg' => $e->getMessage(),
+      ),
+      WATCHDOG_ERROR
+    );
     file_delete($file);
     return;
   }
   drupal_set_message(t("Successfully Updated Datastream"));
-  $form_state['redirect'] = "islandora/object/{$object->id}";
 }
 
 /**

islandora.module

@@ -34,11 +34,10 @@ define('ISLANDORA_INGEST', 'ingest fedora objects');
 define('ISLANDORA_PURGE', 'delete fedora objects and datastreams');
 define('ISLANDORA_MANAGE_PROPERTIES', 'manage object properties');
 define('ISLANDORA_VIEW_DATASTREAM_HISTORY', 'view old datastream versions');
-define('ISLANDORA_ADD_NEW_DATASTREAM_VERSION', 'add a new datastream version as latest');
 define('ISLANDORA_MANAGE_DELETED_OBJECTS', 'manage deleted objects');
 define('ISLANDORA_REVERT_DATASTREAM', 'revert to old datastream');
 define('ISLANDORA_REGENERATE_DERIVATIVES', 'regenerate derivatives for an object');
-define('ISLANDORA_REPLACE_DATASTREAM', 'replace a datastream with new content, preserving version history');
+define('ISLANDORA_REPLACE_DATASTREAM_CONTENT', 'replace a datastream with new content, preserving version history');
 
 // Hooks.
 define('ISLANDORA_VIEW_HOOK', 'islandora_view_object');
@@ -325,7 +324,7 @@ function islandora_menu() {
     'file' => 'includes/datastream.version.inc',
     'type' => MENU_CALLBACK,
     'access callback' => 'islandora_datastream_access',
-    'access arguments' => array(ISLANDORA_ADD_NEW_DATASTREAM_VERSION, 4),
+    'access arguments' => array(ISLANDORA_REPLACE_DATASTREAM_CONTENT, 4),
     'load arguments' => array(2),
   );
   $items['islandora/object/%islandora_object/datastream/%islandora_datastream/version/%/delete'] = array(
@@ -597,10 +596,6 @@ function islandora_permission() {
       'title' => t('View datastream history'),
       'description' => t('View all previous versions of a datastream.'),
     ),
-    ISLANDORA_ADD_NEW_DATASTREAM_VERSION => array(
-      'title' => t('Add datastream version'),
-      'description' => t('Add to a datastreams version history as latest.'),
-    ),
     ISLANDORA_REVERT_DATASTREAM => array(
       'title' => t('Revert datastream history'),
       'description' => t('Revert to a previous version of a datastream.'),
@@ -613,7 +608,7 @@ function islandora_permission() {
       'title' => t('Regenerate derivatives'),
       'description' => t('Regenerate derivatives for an object or per datastream.'),
     ),
-    ISLANDORA_REPLACE_DATASTREAM => array(
+    ISLANDORA_REPLACE_DATASTREAM_CONTENT => array(
       'title' => t('Replace derivatives'),
       'description' => t('Replace derivatives for an object or per datastream.'),
     ),
@@ -722,6 +717,7 @@ function islandora_forms($form_id) {
  *   otherwise.
  */
 function islandora_user_access($object_or_datastream, array $permissions, $content_models = array(), $access_any = TRUE, $user = NULL) {
+
   module_load_include('inc', 'islandora', 'includes/utilities');
   $is_repository_accessible = &drupal_static(__FUNCTION__);
 

theme/theme.inc

@@ -456,8 +456,7 @@ function theme_islandora_datastream_version_link(array $vars) {
  */
 function theme_islandora_datastream_replace_link(array $vars) {
   $datastream = $vars['datastream'];
-  if (islandora_datastream_access(ISLANDORA_REPLACE_DATASTREAM, $datastream) &&
-      islandora_datastream_access(ISLANDORA_ADD_NEW_DATASTREAM_VERSION, $datastream)) {
+  if (islandora_datastream_access(ISLANDORA_REPLACE_DATASTREAM_CONTENT, $datastream)) {
     $var_string = variable_get("islandora_ds_replace_exclude_enforced", "RELS-EXT,RELS-INT");
     $replace_exclude = explode(",", $var_string);
     if (!in_array($datastream->id, $replace_exclude)) {