function page_content($js, $input, $entity, $view_mode)
 {
     $panelizer = $entity->panelizer[$view_mode];
     if (empty($panelizer)) {
         return MENU_NOT_FOUND;
     }
     list($entity_id, $revision_id, $bundle) = entity_extract_ids($this->entity_type, $entity);
     $form_state = array('entity' => $entity, 'revision info' => $this->entity_allows_revisions($entity), 'display cache' => panels_edit_cache_get(implode(':', array_filter(array('panelizer', $this->entity_type, $entity_id, $view_mode, $revision_id)))), 'no_redirect' => TRUE);
     ctools_include('common', 'panelizer');
     $output = drupal_build_form('panelizer_edit_content_form', $form_state);
     if (!empty($form_state['executed'])) {
         if (!empty($form_state['clicked_button']['#save-display'])) {
             drupal_set_message(t('The settings have been updated.'));
             $entity->panelizer[$view_mode]->display = $form_state['display'];
             $entity->panelizer[$view_mode]->display_is_modified = TRUE;
             $this->entity_save($entity);
         } else {
             drupal_set_message(t('Changes have been discarded.'));
         }
         panels_edit_cache_clear($form_state['display cache']);
         drupal_goto($_GET['q']);
     }
     $output = $this->wrap_entity_panelizer_pages($entity, $view_mode, $output);
     ctools_set_no_blocks(FALSE);
     drupal_set_page_content($output);
     $page = element_info('page');
     return $page;
 }

 /**
  * AJAX entry point to create the controller form for an IPE.
  */
 function ajax_save_form($break = NULL)
 {
     if ($this->ipe_test_lock('save-form', $break)) {
         return;
     }
     // Reset the $_POST['ajax_html_ids'] values to preserve
     // proper IDs on form elements when they are rebuilt
     // by the Panels IPE without refreshing the page
     $_POST['ajax_html_ids'] = array();
     $form_state = array('display' => &$this->display, 'content_types' => $this->cache->content_types, 'rerender' => FALSE, 'no_redirect' => TRUE, 'layout' => $this->plugins['layout']);
     $output = drupal_build_form('panels_ipe_edit_control_form', $form_state);
     if (empty($form_state['executed'])) {
         // At this point, we want to save the cache to ensure that we have a lock.
         $this->cache->ipe_locked = TRUE;
         panels_edit_cache_set($this->cache);
         $this->commands[] = array('command' => 'initIPE', 'key' => $this->clean_key, 'data' => drupal_render($output), 'lockPath' => $this->get_url('unlock_ipe'));
         return;
     }
     // Check to see if we have a lock that was broken. If so we need to
     // inform the user and abort.
     if (empty($this->cache->ipe_locked)) {
         $this->commands[] = ajax_command_alert(t('A lock you had has been externally broken, and all your changes have been reverted.'));
         $this->commands[] = array('command' => 'cancelIPE', 'key' => $this->clean_key);
         return;
     }
     // Otherwise it was submitted.
     if (!empty($form_state['clicked_button']['#save-display'])) {
         // Saved. Save the cache.
         panels_edit_cache_save($this->cache);
         // A rerender should fix IDs on added panes as well as ensure style changes are
         // rendered.
         $this->meta_location = 'inline';
         $this->commands[] = ajax_command_replace("#panels-ipe-display-{$this->clean_key}", panels_render_display($this->display, $this));
     } else {
         // Cancelled. Clear the cache.
         panels_edit_cache_clear($this->cache);
     }
     $this->commands[] = array('command' => 'endIPE', 'key' => $this->clean_key);
 }

 /**
  * AJAX entry point to create the controller form for an IPE.
  */
 function ajax_save_form($break = NULL)
 {
     ctools_include('form');
     if (!empty($this->cache->locked)) {
         if ($break != 'break') {
             $account = user_load($this->cache->locked->uid);
             $name = theme('username', $account);
             $lock_age = format_interval(time() - $this->cache->locked->updated);
             $message = t("This panel is being edited by user !user, and is therefore locked from editing by others. This lock is !age old.\n\nClick OK to break this lock and discard any changes made by !user.", array('!user' => $name, '!age' => $lock_age));
             $this->commands[] = array('command' => 'unlockIPE', 'message' => $message, 'break_path' => url($this->get_url('save-form', 'break')));
             return;
         }
         // Break the lock.
         panels_edit_cache_break_lock($this->cache);
     }
     $form_state = array('display' => &$this->display, 'content_types' => $this->cache->content_types, 'rerender' => FALSE, 'no_redirect' => TRUE, 'layout' => $this->plugins['layout']);
     $output = ctools_build_form('panels_ipe_edit_control_form', $form_state);
     if ($output) {
         // At this point, we want to save the cache to ensure that we have a lock.
         panels_edit_cache_set($this->cache);
         $this->commands[] = array('command' => 'initIPE', 'key' => $this->clean_key, 'data' => $output);
         return;
     }
     // no output == submit
     if (!empty($form_state['clicked_button']['#save-display'])) {
         // Saved. Save the cache.
         panels_edit_cache_save($this->cache);
     } else {
         // Cancelled. Clear the cache.
         panels_edit_cache_clear($this->cache);
     }
     $this->commands[] = array('command' => 'endIPE', 'key' => $this->clean_key, 'data' => $output);
 }