namespace BehaviorDesigner.Runtime.Tasks
{
	[TaskIcon("{SkinColor}SelectorIcon.png")]
	[HelpURLAttribute("http://www.opsive.com/assets/BehaviorDesigner/documentation.php?id=26")]
	[TaskDescription("The selector task is similar to an \"or\" operation. It will return success as soon as one of its child tasks return success. If a child task returns failure then it will sequentially run the next task. If no child task returns success then it will return failure.")]
	public class Selector : Composite
	{
		private int currentChildIndex;

		private TaskStatus executionStatus;

		public override int CurrentChildIndex()
		{
			return currentChildIndex;
		}

		public override bool CanExecute()
		{
			return currentChildIndex < children.Count && executionStatus != TaskStatus.Success;
		}

		public override void OnChildExecuted(TaskStatus childStatus)
		{
			currentChildIndex++;
			executionStatus = childStatus;
		}

		public override void OnConditionalAbort(int childIndex)
		{
			currentChildIndex = childIndex;
			executionStatus = TaskStatus.Inactive;
		}

		public override void OnEnd()
		{
			executionStatus = TaskStatus.Inactive;
			currentChildIndex = 0;
		}
	}
}