added ajax callback to admin page, guaranteed collection object

fedora_repository.api.php

@@ -26,7 +26,7 @@ function hook_islandora_tabs($content_models, $pid, $page_number) {
   $tabset['A TAB'] = array(
     '#type' => 'tabpage',
     '#title' => t('A TITLE'),
-    '#content' => 'content')
+    '#content' => 'content'
   );
 
   return $tabset;

fedora_repository.module

@@ -1,4 +1,5 @@
 <?php
+
 /**
  * @file
  *   This file is the Drupal module file for fedora_repository.
@@ -10,10 +11,10 @@
  * Stores this info in the drupal variables table.
  * the name and pid can also be passed as url parameters
  */
-function fedora_repository_admin() {
+function fedora_repository_admin(&$form_state) {
   module_load_include('inc', 'fedora_repository', 'formClass');
   $admin_form = new formClass();
-  return $admin_form->createAdminForm();
+  return $admin_form->createAdminForm(&$form_state);
 }
 
 /**
@@ -1755,3 +1756,87 @@ function fedora_repository_fedora_repository_check_perm($op, $pid, $user) {
     return NULL;
   }
 }
+
+function update_fedora_url_div() {
+  $form = islandora_callback_prep();
+  $changed_elements = $form['fedora_ahah_wrapper'];
+  unset($changed_elements['#prefix'], $changed_elements['#suffix']);
+  $output = theme('status_messages') . drupal_render($changed_elements);
+  drupal_json(array(
+    'status' => TRUE,
+    'data' => $output,
+  ));
+}
+
+function islandora_callback_prep() {
+  $form_state = array('storage' => NULL, 'submitted' => FALSE, 'rebuild' => TRUE);
+  $form_build_id = $_POST['form_build_id'];
+  $form = form_get_cache($form_build_id, $form_state);
+  $args = $form['#parameters'];
+  $form_id = array_shift($args);
+  $form_state['post'] = $form['#post'] = $_POST;
+  // Enable the submit/validate handlers to determine whether AHAH-submittted.
+  $form_state['ahah_submission'] = TRUE;
+  $form['#programmed'] = $form['#redirect'] = FALSE;
+  drupal_process_form($form_id, $form, $form_state);
+  $form = drupal_rebuild_form($form_id, $form_state, $args, $form_build_id);
+  return $form;
+}
+
+function islandora_fedora_settings_form_submit($form, &$form_state) {
+
+  $op = isset($form_state['values']['op']) ? $form_state['values']['op'] : '';
+  if ($form_state['ahah_submission'] == TRUE) {
+    $form_state['rebuild'] = TRUE;
+    return;
+  }
+  if ($form_state['clicked_button']['#id'] != 'edit-submit' && $op != t('Reset to defaults')) {
+    $form_state['rebuild'] = TRUE;
+    return;
+  }
+
+
+  // Exclude unnecessary elements.
+  unset($form_state['values']['submit'], $form_state['values']['reset'], $form_state['values']['form_id'], $form_state['values']['op'], $form_state['values']['form_token'], $form_state['values']['form_build_id']);
+
+  foreach ($form_state['values'] as $key => $value) {
+    if ($op == t('Reset to defaults')) {
+      variable_del($key);
+    }
+    else {
+      if (is_array($value) && isset($form_state['values']['array_filter'])) {
+        $value = array_keys(array_filter($value));
+      }
+      variable_set($key, $value);
+    }
+  }
+
+  //set elements previously defined in config code.
+  //the elements are left in to allow for third party modules.
+  if ($op != t('Reset to defaults')) {
+    $fedora_base = variable_get('fedora_base_url', 'http://localhost:8080/fedora');
+    variable_set('fedora_soap_url', $fedora_base . '/wsdl?api=API-A');
+    variable_set('fedora_soap_manage_url', $fedora_base . '/wsdl?api=API-M');
+  }
+  if ($op == t('Reset to defaults')) {
+    drupal_set_message(t('The configuration options have been reset to their default values.'));
+  }
+  else {
+    drupal_set_message(t('The Islandora configuration options have been saved.'));
+  }
+
+  $root = variable_get('fedora_repository_pid', 'islandora:root');
+  islandora_guarantee_root_collection($root);
+  cache_clear_all();
+  drupal_rebuild_theme_registry();
+}
+
+function islandora_guarantee_root_collection($pid){
+  module_load_include('inc', 'fedora_repository', 'api/fedora_item');
+  $item = new Fedora_Item($pid);
+  if($item->exists()){
+    return;
+  }
+  $item = Fedora_item::ingest_new_item($pid, 'A', 'Islandora Root Collection', 'admin');
+  $item->add_relationship('hasModel', 'islandora:collectionCModel', FEDORA_MODEL_URI);
+}

formClass.inc

@@ -158,6 +158,13 @@ class formClass {
       'access arguments' => array('administer site configuration'),
     );
 
+    $items['islandora/fedora/url'] = array(
+      'page callback' => 'update_fedora_url_div',
+      'access arguments' => array('view fedora collection'),
+      'file' => 'fedora_repository.module',
+      'type' => MENU_CALLBACK,
+    );
+
     return $items;
   }
 
@@ -165,14 +172,25 @@ class formClass {
    * Create admin form
    * @return array
    */
-  function createAdminForm() {
+  function createAdminForm(&$form_state) {
     if (!user_access('administer site configuration')) {
       drupal_set_message(t('You must be a site administrator to edit the Fedora collections list.'), 'error');
       return;
     }
     module_load_include('inc', 'fedora_repository', 'api/fedora_utils');
     module_load_include('inc', 'fedora_repository', 'ObjectHelper');
+    $fedora_path = isset($form_state['values']['fedora_base_url']) ? $form_state['values']['fedora_base_url'] : variable_get('fedora_base_url', 'http://localhost:8080/fedora');
+    $triplepath = "$fedora_path/risearch";
+    $response = do_curl_ext($fedora_path . '/describe');
+    $available = ($response != NULL) ? ($response[1] == 0) : FALSE;
+
+    $confirmation_message = ($available ? '<img src="' . url('misc/watchdog-ok.png') . '"/>'
+            . t('Successfully connected to Fedora server at @fedora_soap_url', array('@fedora_soap_url' => $fedora_path)) : '<img src="'
+            . url('misc/watchdog-error.png') . '"/> '
+            . t('Unable to connect to Fedora server at @fedora_soap_url', array('@fedora_soap_url' => $fedora_path)));
+
     $form = array();
+
     $form['fedora_repository_pid'] = array(
       '#type' => 'textfield',
       '#title' => t('Root Collection PID'),
@@ -182,45 +200,41 @@ class formClass {
       '#weight' => -18
     );
 
-    $form['fedora_base_url'] = array(
-      '#type' => 'textfield',
-      '#title' => t('Fedora base URL'),
-      '#default_value' => variable_get('fedora_base_url', 'http://localhost:8080/fedora'),
-      '#description' => t('The URL to use for REST-type connections'),
-      '#required' => TRUE,
-      '#weight' => -16,
-    );
 
 
-    $form['fedora_repository_url'] = array(
-      '#type' => 'textfield',
-      '#title' => t('Fedora RISearch URL'),
-      '#default_value' => variable_get('fedora_repository_url', 'http://localhost:8080/fedora/risearch'),
-      '#description' => t('The url of the Fedora server'), '#required' => TRUE,
-      '#weight' => -14
+// new ahah stuff
+
+    $form['fedora_ahah_wrapper'] = array(
+      '#prefix' => '<div id="islandora-fedora-url">',
+      '#suffix' => '</div>',
+      '#type' => 'markup',
     );
 
-    $form['fedora_soap_url'] = array(
+    $form['fedora_ahah_wrapper']['fedora_base_url'] = array(
       '#type' => 'textfield',
-      '#title' => t('Fedora SOAP Url'),
-      '#default_value' => variable_get('fedora_soap_url', 'http://localhost:8080/fedora/wsdl?api=API-A'),
-      '#description' => t('The URL to use for SOAP connections'),
-      '#required' => TRUE,
-      '#weight' => -12,
-      '#suffix' => '<p>' . (
-        fedora_available() ?
-          theme('image', 'misc/watchdog-ok.png') . t('Successfully connected to Fedora server at @fedora_soap_url', array('@fedora_soap_url' => variable_get('fedora_soap_url', ''))) :
-          theme('image', 'misc/watchdog-error.png') . t('Unable to connect to Fedora server at @fedora_soap_url', array('@fedora_soap_url' => variable_get('fedora_soap_url', '')))) . '</p>',
+      '#title' => t('Fedora base URL'),
+      '#default_value' => $fedora_path,
+      '#description' => t('The URL to use for REST-type connections'),
+      '#ahah' => array(
+        'path' => 'islandora/fedora/url',
+        'wrapper' => 'islandora-fedora-url',
+        'effect' => 'fade',
+        'event' => 'change'),
     );
-
-    $form['fedora_soap_manage_url'] = array(
+    $form['fedora_ahah_wrapper']['infobox'] = array(
+      '#type' => 'item',
+      '#value' => $confirmation_message,
+    );
+    $form['fedora_ahah_wrapper']['fedora_repository_url'] = array(
       '#type' => 'textfield',
-      '#title' => t('Fedora SOAP management URL'),
-      '#default_value' => variable_get('fedora_soap_manage_url', 'http://localhost:8080/fedora/wsdl?api=API-M'), '#description' => t('The URL to use for SOAP API-M connections'),
+      '#title' => t('Fedora RISearch URL'),
+      '#default_value' => $triplepath,
+      '#description' => t('The url of the Fedora server\'s Triplestore.  Change this only if you have set up an external triplestore'),
       '#required' => TRUE,
-      '#weight' => -10
+      
     );
 
+
 // will allow admin user to remove namepsace restrictions if not explicitly disallowed  in settings.php
     if (variable_get('allow_open_namespace', TRUE)) {
       $form['fedora_namespace'] = array(
@@ -365,9 +379,13 @@ class formClass {
     );
 
     $form['#attributes'] = array('enctype' => "multipart/form-data");
+  $form['buttons']['submit'] = array('#type' => 'submit', '#value' => t('Save Configuration'));
+  $form['buttons']['reset'] = array('#type' => 'submit', '#value' => t('Reset to defaults'));
+  $form['#submit'][] = 'islandora_fedora_settings_form_submit';
+  $form['#theme'] = 'system_settings_form';
+  return ($form);
 
-
-    return system_settings_form($form);
+   // return system_settings_form($form);
   }
 
   /**
@@ -422,8 +440,7 @@ class formClass {
     }
 
     // Save the title
-    if ( $label != null )
-    {
+    if ($label != null) {
       $object = new Fedora_Item($form_values['pid']);
       $object->modify_object($label);
     }