--- /dev/null
+<?php
+/**
+ * A HandleableTask interface
+ *
+ * @author Roland Haeder <webmaster@shipsimu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.shipsimu.org
+ * @todo HandleableDataSet looks strange here
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+interface HandleableTask extends HandleableDataSet {
+ /**
+ * Searches a task by given instance
+ *
+ * @param $taskInstanc An instanceof a Taskable class
+ * @return $taskName Name of the task as used while registration
+ */
+ function searchTask (Taskable $taskInstance);
+
+ /**
+ * Registers a task with a task handler.
+ *
+ * @param $taskName A task name to register the task on
+ * @param $taskInstance The instance we should register as a task
+ * @return void
+ */
+ function registerTask ($taskName, Visitable $taskInstance);
+
+ /**
+ * Checks whether tasks are left including idle task
+ *
+ * @return $tasksLeft Whether there are tasks left to handle
+ */
+ function hasTasksLeft ();
+
+ /**
+ * Handles all tasks by checking if they should startup or if it is their
+ * turn to run. You should use this method in a while() loop in conjuntion
+ * with hasTasksLeft() so you can e.g. shutdown by adding a ShutdownTask
+ * which will attempt to remove all tasks from the task handler.
+ *
+ * @return void
+ */
+ function handleTasks ();
+
+ /**
+ * Shuts down all tasks and the task handler itself. This method should be
+ * called from a corresponding filter class.
+ *
+ * @return void
+ */
+ function doShutdown ();
+}
+
+// [EOF]
+?>