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- <?php
- /**
- * @file
- * Hooks provided by the workflow module.
- */
- /**
- * Implements hook_workflow().
- *
- * @param $op
- * The current workflow operation: 'transition permitted', 'transition pre' or 'transition post'.
- * @param $old_state
- * The state ID of the current state.
- * @param $new_state
- * The state ID of the new state.
- * @param $node
- * The node whose workflow state is changing.
- * @param $force
- * The caller indicated that the transition should be forced. (bool).
- * This is only available on the "pre" and "post" calls.
- */
- function hook_workflow($op, $old_state, $new_state, $node, $force = FALSE) {
- switch ($op) {
- case 'transition permitted':
- // The workflow module does nothing during this operation.
- // This operation occurs when the list of available transitions
- // is built. Your module's implementation could return FALSE
- // here and disallow the presentation of the choice.
- break;
- case 'transition pre':
- // The workflow module does nothing during this operation.
- // But your module's implementation of the workflow hook could
- // return FALSE here and veto the transition.
- break;
- case 'transition post':
- break;
- case 'transition delete':
- break;
- }
- }
- /**
- * Implements hook_workflow_history_alter().
- * Add an 'undo' operation for the most recent history change.
- *
- * @param $variables
- * The current workflow history information as an array.
- * 'old_sid' - The state ID of the previous state.
- * 'old_state_name' - The state name of the previous state.
- * 'sid' - The state ID of the current state.
- * 'state_name' - The state name of the current state.
- * 'history' - The row from the workflow_node_history table.
- *
- * If you want to add additional data, such as an operation link,
- * place it in the 'extra' value.
- */
- function hook_workflow_history_alter(&$variables) {
- // The Worflow module does nothing with this hook.
- // For an example implementation, see the Workflow Revert add-on.
- }
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