/**
  * Execute a transition (change state of a node).
  *
  * @param bool $force
  *   If set to TRUE, workflow permissions will be ignored.
  *
  * @return int
  *   New state ID. If execution failed, old state ID is returned,
  *
  * deprecated workflow_execute_transition() --> WorkflowTransition::execute().
  */
 public function execute($force = FALSE)
 {
     $user = $this->getUser();
     $old_sid = $this->old_sid;
     $new_sid = $this->new_sid;
     // Load the entity, if not already loaded.
     // This also sets the (empty) $revision_id in Scheduled Transitions.
     $entity = $this->getEntity();
     // Only after getEntity(), the following are surely set.
     $entity_type = $this->entity_type;
     $entity_id = $this->entity_id;
     $field_name = $this->field_name;
     // Make sure $force is set in the transition, too.
     if ($force) {
         $this->force($force);
     }
     // Store the transition, so it can be easily fetched later on.
     // Store in an array, to prepare for multiple workflow_fields per entity.
     // This is a.o. used in hook_entity_update to trigger 'transition post'.
     $entity->workflow_transitions[$field_name] = $this;
     // Prepare an array of arguments for error messages.
     $args = array('%user' => isset($user->name) ? $user->name : '', '%old' => $old_sid, '%new' => $new_sid);
     if (!$this->getOldState()) {
         drupal_set_message($message = t('You tried to set a Workflow State, but
     the entity is not relevant. Please contact your system administrator.'), 'error');
         $message = 'Setting a non-relevant Entity from state %old to %new';
         $uri = entity_uri($entity_type, $entity);
         watchdog('workflow', $message, $args, WATCHDOG_ERROR, l('view', $uri['path']));
         return $old_sid;
     }
     // Check if the state has changed.
     $state_changed = $old_sid != $new_sid;
     // If so, check the permissions.
     if ($state_changed) {
         // State has changed. Do some checks upfront.
         if (!$force) {
             // Make sure this transition is allowed by workflow module Admin UI.
             $roles = array_keys($user->roles);
             $roles = array_merge(array(WORKFLOW_ROLE_AUTHOR_RID), $roles);
             if (!$this->isAllowed($roles, $user, $force)) {
                 watchdog('workflow', 'User %user not allowed to go from state %old to %new', $args, WATCHDOG_NOTICE);
                 // If incorrect, quit.
                 return $old_sid;
             }
         }
         if (!$force) {
             // Make sure this transition is allowed by custom module.
             // @todo D8: remove, or replace by 'transition pre'. See WorkflowState::getOptions().
             // @todo D8: replace all parameters that are included in $transition.
             $permitted = module_invoke_all('workflow', 'transition permitted', $old_sid, $new_sid, $entity, $force, $entity_type, $field_name, $this, $user);
             // Stop if a module says so.
             if (in_array(FALSE, $permitted, TRUE)) {
                 watchdog('workflow', 'Transition vetoed by module.');
                 return $old_sid;
             }
         }
         // Make sure this transition is valid and allowed for the current user.
         // Invoke a callback indicating a transition is about to occur.
         // Modules may veto the transition by returning FALSE.
         // (Even if $force is TRUE, but they shouldn't do that.)
         $permitted = module_invoke_all('workflow', 'transition pre', $old_sid, $new_sid, $entity, $force, $entity_type, $field_name, $this);
         // Stop if a module says so.
         if (in_array(FALSE, $permitted, TRUE)) {
             watchdog('workflow', 'Transition vetoed by module.');
             return $old_sid;
         }
     } elseif ($this->comment) {
         // No need to ask permission for adding comments.
         // Since you should not add actions to a 'transition pre' event, there is
         // no need to invoke the event.
     } else {
         // There is no state change, and no comment.
         // We may need to clean up something.
     }
     // The transition is allowed. Let other modules modify the comment.
     // @todo D8: remove all but last items from $context.
     $context = array('node' => $entity, 'sid' => $new_sid, 'old_sid' => $old_sid, 'uid' => $user->uid, 'transition' => $this);
     drupal_alter('workflow_comment', $this->comment, $context);
     // Now, change the database.
     // Log the new state in {workflow_node}.
     if (!$field_name) {
         if ($state_changed || $this->comment) {
             // If the node does not have an existing 'workflow' property,
             // save the $old_sid there, so it can be logged.
             if (!isset($entity->workflow)) {
                 // This is a workflow_node sid.
                 $entity->workflow = $old_sid;
                 // This is a workflow_node sid.
             }
             // Change the state for {workflow_node}.
             // The equivalent for Field API is in WorkflowDefaultWidget::submit.
             $data = array('nid' => $entity_id, 'sid' => $new_sid, 'uid' => isset($entity->workflow_uid) ? $entity->workflow_uid : $user->uid, 'stamp' => REQUEST_TIME);
             workflow_update_workflow_node($data);
             $entity->workflow = $new_sid;
             // This is a workflow_node sid.
         }
     } else {
         // This is a Workflow Field.
         // Until now, adding code here (instead of in workflow_execute_transition() )
         // doesn't work, creating an endless loop.
         /*
              if ($state_changed || $this->comment) {
                // Do a separate update to update the field (Workflow Field API)
                // This will call hook_field_update() and WorkflowFieldDefaultWidget::submit().
                // $entity->{$field_name}[$this->language] = array();
                // $entity->{$field_name}[$this->language][0]['workflow']['workflow_sid'] = $new_sid;
                // $entity->{$field_name}[$this->language][0]['workflow']['workflow_comment'] = $this->comment;
                $entity->{$field_name}[$this->language][0]['transition'] = $this;
         
                // Save the entity, but not through entity_save(),
                // since this will check permissions again and trigger rules.
                // @TODO: replace below by a workflow_field setter callback.
                // The transition was successfully executed, or else a message was raised.
         //        entity_save($entity_type, $entity);
                // or
         //        field_attach_update($entity_type, $entity);
         
                // Reset the entity cache after update.
                entity_get_controller($entity_type)->resetCache(array($entity_id));
         
                $new_sid = workflow_node_current_state($entity, $entity_type, $field_name);
              }
         */
     }
     $this->is_executed = TRUE;
     if ($state_changed || $this->comment) {
         // Log the transition in {workflow_node_history}.
         $this->save();
         // Register state change with watchdog.
         if ($state_changed) {
             $workflow = $this->getWorkflow();
             // Get the workflow_settings, unified for workflow_node and workflow_field.
             // @todo D8: move settings back to Workflow (like workflownode currently is).
             // @todo D8: to move settings back, grep for "workflow->options" and "field['settings']".
             $field = _workflow_info_field($field_name, $workflow);
             if (($new_state = $this->getNewState()) && !empty($field['settings']['watchdog_log'])) {
                 $entity_type_info = entity_get_info($entity_type);
                 $message = $this->isScheduled() ? 'Scheduled state change of @type %label to %state_name executed' : 'State of @type %label set to %state_name';
                 $args = array('@type' => $entity_type_info['label'], '%label' => entity_label($entity_type, $entity), '%state_name' => check_plain(t($new_state->label())));
                 $uri = entity_uri($entity_type, $entity);
                 watchdog('workflow', $message, $args, WATCHDOG_NOTICE, l('view', $uri['path']));
             }
         }
         // Remove any scheduled state transitions.
         foreach (WorkflowScheduledTransition::load($entity_type, $entity_id, $field_name) as $scheduled_transition) {
             /* @var $scheduled_transition WorkflowScheduledTransition */
             $scheduled_transition->delete();
         }
         // Notify modules that transition has occurred.
         // Action triggers should take place in response to this callback, not the 'transaction pre'.
         if (!$field_name) {
             // Now that workflow data is saved, reset stuff to avoid problems
             // when Rules etc want to resave the data.
             // Remember, this is only for nodes, and node_save() is not necessarily performed.
             unset($entity->workflow_comment);
             module_invoke_all('workflow', 'transition post', $old_sid, $new_sid, $entity, $force, $entity_type, $field_name, $this);
             entity_get_controller('node')->resetCache(array($entity->nid));
             // from entity_load(), node_save();
         } else {
             // module_invoke_all('workflow', 'transition post', $old_sid, $new_sid, $entity, $force, $entity_type, $field_name, $this);
             // We have a problem here with Rules, Trigger, etc. when invoking
             // 'transition post': the entity has not been saved, yet. we are still
             // IN the transition, not AFTER. Alternatives:
             // 1. Save the field here explicitly, using field_attach_save;
             // 2. Move the invoke to another place: hook_entity_insert(), hook_entity_update();
             // 3. Rely on the entity hooks. This works for Rules, not for Trigger.
             // --> We choose option 2:
             // - First, $entity->workflow_transitions[] is set for easy re-fetching.
             // - Then, post_execute() is invoked via workflowfield_entity_insert(), _update().
         }
     }
     return $new_sid;
 }
 /**
  * {@inheritdoc}
  *
  * @param array $form
  * @param array $form_state
  * @param WorkflowTransition
  *  The Transition to be edited, created.
  *
  * @return
  *  The enhanced form structure.
  */
 public function buildForm(array $form, array &$form_state)
 {
     global $user;
     /* @var $transition WorkflowTransition */
     $transition = NULL;
     if (isset($form_state['WorkflowTransition'])) {
         // If provided, get data from WorkflowTransition.
         // This happens when calling entity_ui_get_form(), like in the
         // WorkflowTransition Comment Edit form.
         $transition = $form_state['WorkflowTransition'];
         $field_name = $transition->field_name;
         $workflow = $transition->getWorkflow();
         $wid = $transition->wid;
         $entity = $this->entity = $transition->getEntity();
         $entity_type = $this->entity_type = $transition->entity_type;
         // Figure out the $entity's bundle and id.
         list(, , $entity_bundle) = entity_extract_ids($entity_type, $entity);
         $entity_id = entity_id($entity_type, $entity);
         // Show the current state and the Workflow form to allow state changing.
         // N.B. This part is replicated in hook_node_view, workflow_tab_page, workflow_vbo, transition_edit.
         // @todo: support multiple workflows per entity.
         // For workflow_tab_page with multiple workflows, use a separate view. See [#2217291].
         $field = _workflow_info_field($field_name, $workflow);
         $instance = $this->instance + field_info_instance($entity_type, $field_name, $entity_bundle);
     } else {
         // Get data from normal parameters.
         $entity = $this->entity;
         $entity_type = $this->entity_type;
         $entity_id = $entity ? entity_id($entity_type, $entity) : 0;
         $field = $this->field;
         $field_name = $field['field_name'];
         $instance = $this->instance;
         // $field['settings']['wid'] can be numeric or named.
         // $wid may not be specified.
         $wid = $field['settings']['wid'];
         $workflow = workflow_load_single($wid);
     }
     $force = FALSE;
     // Get values.
     // Current sid and default value may differ in a scheduled transition.
     // Set 'grouped' option. Only valid for select list and undefined/multiple workflows.
     $settings_options_type = $field['settings']['widget']['options'];
     $grouped = $settings_options_type == 'select';
     if ($transition) {
         // If a Transition is passed as parameter, use this.
         if ($transition->isExecuted()) {
             // We are editing an existing/executed/not-scheduled transition.
             // Only the comments may be changed!
             // Fetch the old state for the formatter on top of form.
             $current_state = $transition->getOldState();
             $current_sid = $current_state->sid;
             // The states may not be changed anymore.
             $new_state = $transition->getNewState();
             $options = array($new_state->sid => $new_state->label());
             // We need the widget to edit the comment.
             $show_widget = TRUE;
         } else {
             $current_state = $transition->getOldState();
             $current_sid = $current_state->sid;
             $options = $current_state->getOptions($entity_type, $entity, $field_name, $user, $force);
             $show_widget = $current_state->showWidget($entity_type, $entity, $field_name, $user, $force);
         }
         $default_value = $transition->new_sid;
     } elseif (!$entity) {
         // Sometimes, no entity is given. We encountered the following cases:
         // - the Field settings page,
         // - the VBO action form;
         // - the Advance Action form on admin/config/system/actions;
         // If so, show all options for the given workflow(s).
         $options = workflow_get_workflow_state_names($wid, $grouped, $all = FALSE);
         $show_widget = TRUE;
         $default_value = $current_sid = isset($items[0]['value']) ? $items[0]['value'] : '0';
     } else {
         $current_sid = workflow_node_current_state($entity, $entity_type, $field_name);
         if ($current_state = workflow_state_load_single($current_sid)) {
             /* @var $current_state WorkflowTransition */
             $options = $current_state->getOptions($entity_type, $entity, $field_name, $user, $force);
             $show_widget = $current_state->showWidget($entity_type, $entity, $field_name, $user, $force);
             $default_value = !$current_state->isCreationState() ? $current_sid : $workflow->getFirstSid($entity_type, $entity, $field_name, $user, FALSE);
         } else {
             // We are in trouble! A message is already set in workflow_node_current_state().
             $options = array();
             $show_widget = FALSE;
             $default_value = $current_sid;
         }
         // Get the scheduling info. This may change the $default_value on the Form.
         // Read scheduled information, only if an entity exists.
         // Technically you could have more than one scheduled, but this will only add the soonest one.
         foreach (WorkflowScheduledTransition::load($entity_type, $entity_id, $field_name, 1) as $transition) {
             $default_value = $transition->new_sid;
             break;
         }
     }
     // Prepare a new transition, if still not provided.
     if (!$transition) {
         $transition = new WorkflowTransition(array('old_sid' => $default_value, 'stamp' => REQUEST_TIME));
     }
     // Fetch the form ID. This is unique for each entity, to allow multiple form per page (Views, etc.).
     // Make it uniquer by adding the field name, or else the scheduling of
     // multiple workflow_fields is not independent of each other.
     // IF we are truly on a Transition form (so, not a Node Form with widget)
     // then change the form id, too.
     $form_id = $this->getFormId();
     if (!isset($form_state['build_info']['base_form_id'])) {
         // Strange: on node form, the base_form_id is node_form,
         // but on term form, it is not set.
         // In both cases, it is OK.
     } else {
         if ($form_state['build_info']['base_form_id'] == 'workflow_transition_wrapper_form') {
             $form_state['build_info']['base_form_id'] = 'workflow_transition_form';
         }
         if ($form_state['build_info']['base_form_id'] == 'workflow_transition_form') {
             $form_state['build_info']['form_id'] = $form_id;
         }
     }
     $workflow_label = $workflow ? check_plain(t($workflow->label())) : '';
     // Change settings locally.
     if (!$field_name) {
         // This is a Workflow Node workflow. Set widget options as in v7.x-1.2
         if ($form_state['build_info']['base_form_id'] == 'node_form') {
             $field['settings']['widget']['comment'] = isset($workflow->options['comment_log_node']) ? $workflow->options['comment_log_node'] : 1;
             // vs. ['comment_log_tab'];
             $field['settings']['widget']['current_status'] = TRUE;
         } else {
             $field['settings']['widget']['comment'] = isset($workflow->options['comment_log_tab']) ? $workflow->options['comment_log_tab'] : 1;
             // vs. ['comment_log_node'];
             $field['settings']['widget']['current_status'] = TRUE;
         }
     }
     // Capture settings to format the form/widget.
     $settings_title_as_name = !empty($field['settings']['widget']['name_as_title']);
     $settings_fieldset = isset($field['settings']['widget']['fieldset']) ? $field['settings']['widget']['fieldset'] : 0;
     $settings_options_type = $field['settings']['widget']['options'];
     // The scheduling info can be hidden via field settings, ...
     // You may not schedule an existing Transition.
     // You must have the correct permission.
     $settings_schedule = !empty($field['settings']['widget']['schedule']) && !$transition->isExecuted() && user_access('schedule workflow transitions');
     if ($settings_schedule) {
         if (isset($form_state['step']) && $form_state['step'] == 'views_bulk_operations_config_form') {
             // On VBO 'modify entity values' form, leave field settings.
             $settings_schedule = TRUE;
         } else {
             // ... and cannot be shown on a Content add page (no $entity_id),
             // ...but can be shown on a VBO 'set workflow state to..'page (no entity).
             $settings_schedule = !($entity && !$entity_id);
         }
     }
     $settings_schedule_timezone = !empty($field['settings']['widget']['schedule_timezone']);
     // Show comment, when both Field and Instance allow this.
     $settings_comment = $field['settings']['widget']['comment'];
     // Save the current value of the node in the form, for later Workflow-module specific references.
     // We add prefix, since #tree == FALSE.
     $element['workflow']['workflow_entity'] = array('#type' => 'value', '#value' => $this->entity);
     $element['workflow']['workflow_entity_type'] = array('#type' => 'value', '#value' => $this->entity_type);
     $element['workflow']['workflow_field'] = array('#type' => 'value', '#value' => $field);
     $element['workflow']['workflow_instance'] = array('#type' => 'value', '#value' => $instance);
     // Save the form_id, so the form values can be retrieved in submit function.
     $element['workflow']['form_id'] = array('#type' => 'value', '#value' => $form_id);
     // Save the hid, when editing an existing transition.
     $element['workflow']['workflow_hid'] = array('#type' => 'hidden', '#value' => $transition->hid);
     // Add the default value in the place where normal fields
     // have it. This is to cater for 'preview' of the entity.
     $element['#default_value'] = $default_value;
     // Decide if we show a widget or a formatter.
     // There is no need for a widget when the only option is the current sid.
     // Show state formatter before the rest of the form,
     // when transition is scheduled or widget is hidden.
     if (!$show_widget || $transition->isScheduled() || $transition->isExecuted()) {
         $form['workflow_current_state'] = workflow_state_formatter($entity_type, $entity, $field, $instance, $current_sid);
         // Set a proper weight, which works for Workflow Options in select list AND action buttons.
         $form['workflow_current_state']['#weight'] = -0.005;
     }
     // Add class following node-form pattern (both on form and container).
     $workflow_type_id = $workflow ? $workflow->getName() : 'none';
     // No workflow on New Action form.
     $element['workflow']['#attributes']['class'][] = 'workflow-transition-container';
     $element['workflow']['#attributes']['class'][] = 'workflow-transition-' . $workflow_type_id . '-container';
     // Add class for D7-backwards compatibility (only on container).
     $element['workflow']['#attributes']['class'][] = 'workflow-form-container';
     if (!$show_widget) {
         // Show no widget.
         $element['workflow']['workflow_sid']['#type'] = 'value';
         $element['workflow']['workflow_sid']['#value'] = $default_value;
         $element['workflow']['workflow_sid']['#options'] = $options;
         // In case action buttons need them.
         $form += $element;
         return $form;
         // <---- exit.
     } else {
         // Prepare a UI wrapper. This might be a fieldset or a container.
         if ($settings_fieldset == 0) {
             // Use 'container'.
             $element['workflow'] += array('#type' => 'container');
         } else {
             $element['workflow'] += array('#type' => 'fieldset', '#title' => t($workflow_label), '#collapsible' => TRUE, '#collapsed' => $settings_fieldset == 1 ? FALSE : TRUE);
         }
         // The 'options' widget. May be removed later if 'Action buttons' are chosen.
         // The help text is not available for container. Let's add it to the
         // State box.
         $help_text = isset($instance['description']) ? $instance['description'] : '';
         $element['workflow']['workflow_sid'] = array('#type' => $settings_options_type, '#title' => $settings_title_as_name ? t('Change !name state', array('!name' => $workflow_label)) : t('Target state'), '#access' => TRUE, '#options' => $options, '#default_value' => $default_value, '#description' => $help_text);
     }
     // Display scheduling form, but only if entity is being edited and user has
     // permission. State change cannot be scheduled at entity creation because
     // that leaves the entity in the (creation) state.
     if ($settings_schedule == TRUE) {
         if (variable_get('configurable_timezones', 1) && $user->uid && drupal_strlen($user->timezone)) {
             $timezone = $user->timezone;
         } else {
             $timezone = variable_get('date_default_timezone', 0);
         }
         $timezones = drupal_map_assoc(timezone_identifiers_list());
         $timestamp = $transition->getTimestamp();
         $hours = !$transition->isScheduled() ? '00:00' : format_date($timestamp, 'custom', 'H:i', $timezone);
         // Add a container, so checkbox and time stay together in extra fields.
         $element['workflow']['workflow_scheduling'] = array('#type' => 'container', '#tree' => TRUE);
         $element['workflow']['workflow_scheduling']['scheduled'] = array('#type' => 'radios', '#title' => t('Schedule'), '#options' => array('0' => t('Immediately'), '1' => t('Schedule for state change')), '#default_value' => $transition->isScheduled() ? '1' : '0', '#attributes' => array('class' => array(drupal_html_class('scheduled_' . $form_id))));
         $element['workflow']['workflow_scheduling']['date_time'] = array('#type' => 'fieldset', '#title' => t('At'), '#attributes' => array('class' => array('container-inline')), '#prefix' => '<div style="margin-left: 1em;">', '#suffix' => '</div>', '#states' => array('visible' => array('input.' . drupal_html_class('scheduled_' . $form_id) => array('value' => '1'))));
         $element['workflow']['workflow_scheduling']['date_time']['workflow_scheduled_date'] = array('#type' => 'date', '#default_value' => array('day' => date('j', $timestamp), 'month' => date('n', $timestamp), 'year' => date('Y', $timestamp)));
         $element['workflow']['workflow_scheduling']['date_time']['workflow_scheduled_hour'] = array('#type' => 'textfield', '#title' => t('Time'), '#maxlength' => 7, '#size' => 6, '#default_value' => $hours, '#element_validate' => array('_workflow_transition_form_element_validate_time'));
         $element['workflow']['workflow_scheduling']['date_time']['workflow_scheduled_timezone'] = array('#type' => $settings_schedule_timezone ? 'select' : 'hidden', '#title' => t('Time zone'), '#options' => $timezones, '#default_value' => array($timezone => $timezone));
         $element['workflow']['workflow_scheduling']['date_time']['workflow_scheduled_help'] = array('#type' => 'item', '#prefix' => '<br />', '#description' => t('Please enter a time.
       If no time is included, the default will be midnight on the specified date.
       The current time is: @time.', array('@time' => format_date(REQUEST_TIME, 'custom', 'H:i', $timezone))));
     }
     $element['workflow']['workflow_comment'] = array('#type' => 'textarea', '#required' => $settings_comment == '2', '#access' => $settings_comment != '0', '#title' => t('Workflow comment'), '#description' => t('A comment to put in the workflow log.'), '#default_value' => $transition->comment, '#rows' => 2);
     // Add the fields and extra_fields from the WorkflowTransition.
     // Because we have a 'workflow' wrapper, it doesn't work flawlessly.
     field_attach_form('WorkflowTransition', $transition, $element['workflow'], $form_state);
     // Undo the following elements from field_attach_from. They mess up $this->getTransition().
     // - '#parents' corrupts the Defaultwidget.
     unset($element['workflow']['#parents']);
     // - '#pre_render' adds the exra_fields from workflow_field_extra_fields().
     //   That doesn't work, since 'workflow' is not of #type 'form', but
     //   'container' or 'fieldset', and must be executed separately,.
     $element['workflow']['#pre_render'] = array_diff($element['workflow']['#pre_render'], array('_field_extra_fields_pre_render'));
     // Add extra fields.
     $rescue_value = $element['workflow']['#type'];
     $element['workflow']['#type'] = 'form';
     $element['workflow'] = _field_extra_fields_pre_render($element['workflow']);
     $element['workflow']['#type'] = $rescue_value;
     // Finally, add Submit buttons/Action buttons.
     // Either a default 'Submit' button is added, or a button per permitted state.
     if ($settings_options_type == 'buttons') {
         // How do action buttons work? See also d.o. issue #2187151.
         // Create 'action buttons' per state option. Set $sid property on each button.
         // 1. Admin sets ['widget']['options']['#type'] = 'buttons'.
         // 2. This function formElement() creates 'action buttons' per state option;
         //    sets $sid property on each button.
         // 3. User clicks button.
         // 4. Callback _workflow_transition_form_validate_buttons() sets proper State.
         // 5. Callback _workflow_transition_form_validate_buttons() sets Submit function.
         // @todo: this does not work yet for the Add Comment form.
         // Performance: inform workflow_form_alter() to do its job.
         _workflow_use_action_buttons(TRUE);
         // Hide the options box. It will be replaced by action buttons.
         $element['workflow']['workflow_sid']['#type'] = 'select';
         $element['workflow']['workflow_sid']['#access'] = FALSE;
     }
     if ($form_state['build_info']['base_form_id'] == 'workflow_transition_form') {
         // Add action buttons on WorkflowTransitionForm (history tab, formatter)
         // but not on Entity form, and not if action_buttons is selected.
         // you can explicitly NOT add a submit button, e.g., on VBO page.
         if ($instance['widget']['settings']['submit_function'] !== '') {
             // @todo D8: put buttons outside of 'workflow' element, in the standard location.
             $element['workflow']['actions']['#type'] = 'actions';
             $element['workflow']['actions']['submit'] = array('#type' => 'submit', '#value' => t('Update workflow'), '#weight' => -5, '#attributes' => array('class' => array('form-save-default-button')));
             // The 'add submit' can explicitly set by workflowfield_field_formatter_view(),
             // to add the submit button on the Content view page and the Workflow history tab.
             // Add a submit button, but only on Entity View and History page.
             // Add the submit function only if one provided. Set the submit_callback accordingly.
             if (!empty($instance['widget']['settings']['submit_function'])) {
                 $element['workflow']['actions']['submit']['#submit'] = array($instance['widget']['settings']['submit_function']);
             } else {
                 // '#submit' Must be empty, or else the submit function is not called.
                 // $element['workflow']['actions']['submit']['#submit'] = array();
             }
         }
     }
     /*
         $submit_functions = empty($instance['widget']['settings']['submit_function']) ? array() : array($instance['widget']['settings']['submit_function']);
         if ($settings_options_type == 'buttons' || $submit_functions) {
         }
         else {
      // In some cases, no submit callback function is specified. This is
      // explicitly done on e.g., the node edit form, because the workflow form
      // is 'just a field'.
      // So, no Submit button is to be shown.
         }
     */
     $form += $element;
     // Add class following node-form pattern (both on form and container).
     $workflow_type_id = $workflow ? $workflow->getName() : 'none';
     // No workflow on New Action form.
     $form['#attributes']['class'][] = 'workflow-transition-form';
     $form['#attributes']['class'][] = 'workflow-transition-' . $workflow_type_id . '-form';
     return $form;
 }