Changes needed for form builder.

includes/datastream.inc

@@ -85,52 +85,60 @@ function islandora_datastream_get_url(FedoraDatastream $datastream, $type = 'dow
  */
 function islandora_datastream_get_delete_link(FedoraDatastream $datastream) {
   $datastreams = module_invoke_all('islandora_undeletable_datastreams', $datastream->parent->models);
-  if (in_array($datastream->id, $datastreams)) {
+  $can_delete = !in_array($datastream->id, $datastreams);
-    return '';
+  return $can_delete ? l(t('delete'), "islandora/object/{$datastream->parent->id}/datastream/{$datastream->id}/delete") : '';
 }
-  else {
-    return l(t('delete'), 'islandora/object/' . $datastream->parent->id . '/datastream/' . $datastream->id . '/delete');
-  }
-}
-
 
-function islandora_datastream_edit_get_link($object, $ds_id) {
+/**
-  $edit_registry = module_invoke_all('islandora_edit_datastream_registry', $object, $ds_id);
+ * Gets the edit link.
-  if (count($edit_registry) > 0 && user_access(FEDORA_METADATA_EDIT)) {
+ *
-    return l(t('edit'), 'islandora/object/' . $object->id . '/datastream/' . $ds_id . '/edit');
+ * @param FedoraDatastream $datastream
-  }
+ *   The datastream to generated the url to.
-  else {
+ */
-    return '';
+function islandora_datastream_edit_get_link(FedoraDatastream $datastream) {
-  }
+  $edit_registry = module_invoke_all('islandora_edit_datastream_registry', $datastream->parent, $datastream);
+  $can_edit = count($edit_registry) > 0 && user_access(FEDORA_METADATA_EDIT);
+  return $can_edit ? l(t('edit'), "islandora/object/{$datastream->parent->id}/datastream/{$datastream->id}/edit") : '';
 }
 
-function islandora_edit_datastream($object, $ds_id) {
+/**
-  $edit_registry = module_invoke_all('islandora_edit_datastream_registry', $object, $ds_id);
+ * Display the edit datastream page.
+ *
+ * @param FedoraDatastream $datastream
+ *   The datastream to edit.
+ */
+function islandora_edit_datastream(FedoraDatastream $datastream) {
+  $edit_registry = module_invoke_all('islandora_edit_datastream_registry', $datastream->parent, $datastream);
   $edit_count = count($edit_registry);
-
+  switch ($edit_count) {
-  if ($edit_count == 0) {
+    case 0:
       // No edit implementations.
       drupal_set_message(t('There are no edit methods specified for this datastream.'));
-    drupal_goto('islandora/object/' . $object->id . '/manage/datastreams');
+      drupal_goto("islandora/object/{$object->id}/manage/datastreams");
-  }
+      break;
-  elseif ($edit_count == 1) {
+    case 1:
       // One registry implementation, go there
       drupal_goto($edit_registry[0]['url']);
-  }
+      break;
-  else {
+    default:
       // Multiple edit routes registered
       return islandora_edit_datastream_registry_render($edit_registry);
   }
 }
 
-// @TODO: theme / preprocess
+/**
-function islandora_edit_datastream_registry_render($edit_registry) {
+ * Displays links to all the edit datastream registry items.
-  $output = array(
+ *
+ * @param array $edit_registry
+ *   A list of 'islandora_edit_datastream_registry' values.
+ */
+function islandora_edit_datastream_registry_render(array $edit_registry) {
+  $markup = '';
+  foreach ($edit_registry as $edit_route) {
+    $markup .= l($edit_route['name'], $edit_route['url']) . '<br/>';
+  }
+  return array(
     '#type' => 'markup',
-    '#markup' => '',
+    '#markup' => $markup,
   );
-  foreach ($edit_registry AS $edit_route) {
-    $output['#markup'] .= l($edit_route['name'], $edit_route['url']) . '<br/>';
-  }
-  return $output;
 }

islandora.module

@@ -155,7 +155,7 @@ function islandora_menu() {
   $items['islandora/object/%islandora_object/datastream/%islandora_datastream'] = array(
     'title' => 'View datastream',
     'page callback' => 'islandora_view_datastream',
-    'page arguments' => array(4),
+    'page arguments' => array(4, FALSE),
     'type' => MENU_CALLBACK,
     'file' => 'includes/datastream.inc',
     'access callback' => 'islandora_object_datastream_access_callback',
@@ -176,10 +176,10 @@ function islandora_menu() {
     'access arguments' => array(FEDORA_VIEW, 2, 4),
     'load arguments' => array('%map'),
   );
-  $items['islandora/object/%islandora_object/datastream/%islandora_datastreams/edit'] = array(
+  $items['islandora/object/%islandora_object/datastream/%islandora_datastream/edit'] = array(
     'title' => 'Edit datastream',
     'page callback' => 'islandora_edit_datastream',
-    'page arguments' => array(2, 4),
+    'page arguments' => array(4),
     'type' => MENU_CALLBACK,
     'file' => 'includes/datastream.inc',
     'access callback' => 'islandora_object_datastream_access_callback',

theme/islandora.theme.inc

@@ -38,7 +38,7 @@ function islandora_preprocess_islandora_default_edit(&$variables) {
       array('class' => 'datastream-mime', 'data' => $ds->mimeType),
       array('class' => 'datastream-size', 'data' => islandora_datastream_get_human_readable_size($ds)),
       array('class' => 'datastream-download', 'data' => l(t('download'), islandora_datastream_get_url($ds, 'download'))),
-      array('class' => 'datstream-edit', 'data' => islandora_datastream_edit_get_link($islandora_object, $ds->id)),
+      array('class' => 'datstream-edit', 'data' => islandora_datastream_edit_get_link($ds)),
       array('class' => 'datastream-delete', 'data' => islandora_datastream_get_delete_link($ds)),
     );
   }