3 * A HandleableTask interface
5 * @author Roland Haeder <webmaster@shipsimu.org>
7 * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2015 Core Developer Team
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.shipsimu.org
10 * @todo HandleableDataSet looks strange here
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13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation, either version 3 of the License, or
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20 * GNU General Public License for more details.
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25 interface HandleableTask extends HandleableDataSet {
27 * Searches a task by given instance
29 * @param $taskInstanc An instanceof a Taskable class
30 * @return $taskName Name of the task as used while registration
32 function searchTask (Taskable $taskInstance);
35 * Registers a task with a task handler.
37 * @param $taskName A task name to register the task on
38 * @param $taskInstance The instance we should register as a task
41 function registerTask ($taskName, Visitable $taskInstance);
44 * Checks whether tasks are left including idle task
46 * @return $tasksLeft Whether there are tasks left to handle
48 function hasTasksLeft ();
51 * Handles all tasks by checking if they should startup or if it is their
52 * turn to run. You should use this method in a while() loop in conjuntion
53 * with hasTasksLeft() so you can e.g. shutdown by adding a ShutdownTask
54 * which will attempt to remove all tasks from the task handler.
58 function handleTasks ();
61 * Shuts down all tasks and the task handler itself. This method should be
62 * called from a corresponding filter class.
66 function doShutdown ();