using System;
using System.Collections.Generic;
using System.Text;

namespace VEPROMS.CSLA.Library
{
	public partial class ItemInfo
	{
		public ItemInfo SearchNext
		{
			get
			{
				return SearchNextSkip(SkipPartType.This);
			}
		}
		private ItemInfo SearchNextSkip(SkipPartType skip)
		{
			if (skip < SkipPartType.Caution && Cautions != null && Cautions.Count > 0) return Cautions[0].SearchTop;
			if (skip < SkipPartType.Note && Notes != null && Notes.Count > 0) return Notes[0].SearchTop;
			if (skip < SkipPartType.This) return this;
			if (skip < SkipPartType.RNO && RNOs != null && RNOs.Count > 0) return RNOs[0].SearchTop;
			if (skip < SkipPartType.Table && Tables != null && Tables.Count > 0) return Tables[0].SearchTop;
			if (skip < SkipPartType.Procedures && Procedures != null && Procedures.Count > 0) return Procedures[0].SearchTop;
			if (skip < SkipPartType.Sections && Sections != null && Sections.Count > 0) return Sections[0].SearchTop;
			if (skip < SkipPartType.Steps && Steps != null && Steps.Count > 0) return Steps[0].SearchTop;
			if (NextItem != null) return NextItem.SearchTop;
			return UpOneNext;
		}
		public ItemInfo SearchTop
		{
			get
			{
				if (Cautions != null) return Cautions[0].SearchTop;
				if (Notes != null) return Notes[0].SearchTop;
				return this;
			}
		}
		public ItemInfo UpOneNext
		{
			get
			{
				ItemInfo parentItem = ActiveParent as ItemInfo;
				if (parentItem == null) return null;
				if (IsCautionPart) return parentItem.SearchNextSkip(SkipPartType.Caution);
				if (IsNotePart) return parentItem.SearchNextSkip(SkipPartType.Note);
				if (IsRNOPart) return parentItem.SearchNextSkip(SkipPartType.RNO);
				if (IsTablePart) return parentItem.SearchNextSkip(SkipPartType.Table);
				if (IsProcedurePart) return parentItem.SearchNextSkip(SkipPartType.Procedures);
				if (IsSectionPart) return parentItem.SearchNextSkip(SkipPartType.Sections);
				if (IsStepPart) return parentItem.SearchNextSkip(SkipPartType.Steps);
				if (parentItem.NextItem != null) return parentItem.NextItem.SearchTop;
				return parentItem.UpOneNext;
			}
		}
		public ItemInfo SearchPrev
		{
			get
			{
				return SearchPrevSkip(SkipPartType.This);
			}
		}
		private ItemInfo SearchPrevSkip(SkipPartType skip)
		{
			if (skip > SkipPartType.Steps && Steps != null) return Steps[0].LastSibling.SearchBottom;
			if (skip > SkipPartType.Sections && Sections != null) return Sections[0].LastSibling.SearchBottom;
			if (skip > SkipPartType.Procedures && Procedures != null) return Procedures[0].LastSibling.SearchBottom;
			if (skip > SkipPartType.Table && Tables != null) return Tables[0].LastSibling.SearchBottom;
			if (skip > SkipPartType.RNO && RNOs != null) return RNOs[0].LastSibling.SearchBottom;
			if (skip > SkipPartType.This) return this;
			if (skip > SkipPartType.Note && Notes != null) return Notes[0].LastSibling.SearchBottom;
			if (skip > SkipPartType.Caution && Cautions != null) return Cautions[0].LastSibling.SearchBottom;
			if (MyPrevious != null) return MyPrevious.SearchBottom;
			return UpOnePrev;
		}
		public ItemInfo SearchBottom
		{
			get
			{
				if (Steps != null) return Steps[0].LastSibling.SearchBottom;
				if (Sections != null) return Sections[0].LastSibling.SearchBottom;
				if (Procedures != null) return Procedures[0].LastSibling.SearchBottom;
				if (Tables != null) return Tables[0].LastSibling.SearchBottom;
				if (RNOs != null) return RNOs[0].LastSibling.SearchBottom;
				return this;
			}
		}
		public ItemInfo UpOnePrev
		{
			get
			{
				ItemInfo parentItem = ActiveParent as ItemInfo;
				if (parentItem == null) return null;
				if (IsCautionPart) return parentItem.SearchPrevSkip(SkipPartType.Caution);
				if (IsNotePart) return parentItem.SearchPrevSkip(SkipPartType.Note);
				if (IsRNOPart) return parentItem.SearchPrevSkip(SkipPartType.RNO);
				if (IsTablePart) return parentItem.SearchPrevSkip(SkipPartType.Table);
				if (IsProcedurePart) return parentItem.SearchPrevSkip(SkipPartType.Procedures);
				if (IsSectionPart) return parentItem.SearchPrevSkip(SkipPartType.Sections);
				if (IsStepPart) return parentItem.SearchPrevSkip(SkipPartType.Steps);
				if (parentItem.MyPrevious != null) return parentItem.MyPrevious.SearchTop;
				return parentItem.UpOnePrev;
			}
		}
		enum SkipPartType
		{
			Nothing=0,
			Caution=1,
			Note=2,
			This=3,
			RNO=4,
			Table=5,
			Procedures=6,
			Sections=7,
			Steps=8
		}
	}
}