--- excerpt.module	2005-12-30 17:31:10
+++ excerpt.module	2006-07-22 02:15:20
@@ -10,7 +10,20 @@
   }
 }
 
+function excerpt_menu($may_cache) {
+  global $user;
+  $items = array();
+
+  if ($may_cache) {
+    $items[] = array('path' => 'admin/settings/excerpt', 'callback' => 'excerpt_admin_settings',
+      'title' => 'excerpt', 'type' => MENU_NORMAL_ITEM, 'access' => user_access('access administration pages'));
+ }
+
+  return $items;
+}
+
 function excerpt_nodeapi(&$node, $op, $arg) {
+  if (!_excerpt_is_visible($node)) return;
   switch ($op) {
     case 'validate':
       if (trim($node->teaser) == '') {
@@ -26,6 +39,7 @@
 function excerpt_form_alter($form_id, &$form) {
   if (isset($form['type'])) {
     $node = $form['#node'];
+    if (!_excerpt_is_visible($node)) return;
     
     if ($form['type']['#value'] .'_node_settings' == $form_id) {
       $form['excerpt'] = array('#type' => 'fieldset', '#title' => t('Excerpt'));
@@ -51,4 +65,21 @@
     }
   
   }
+}
+
+function excerpt_admin_settings() {
+  $form['excerpt_node_types'] = array('#type' => 'checkboxes',
+    '#title' => t('Node type visibility'),
+    '#default_value' => variable_get('excerpt_node_types', ''),
+    '#options' => node_get_types(),
+    '#description' => t('Show excerpt for the selected node types.'),
+  );
+
+  return system_settings_form('excerpt_admin_settings', $form);
+}
+
+function _excerpt_is_visible($node) {
+    // check the excerpt visibility for current node type
+    $vis_types = variable_get('excerpt_node_types', '');
+    return $vis_types[$node->type];
 }
\ No newline at end of file