using System;
using System.Collections.Generic;
using System.Linq;
using Autodesk.Revit.DB;
using Autodesk.Revit.DB.Architecture;

namespace IFC_Revit_Interop
{
	// Token: 0x0200001A RID: 26
	internal class RailingParentFinder
	{
		// Token: 0x06000082 RID: 130 RVA: 0x00007270 File Offset: 0x00005470
		public RailingParentFinder(ParentFinder host)
		{
			this.host = host;
		}

		// Token: 0x06000083 RID: 131 RVA: 0x00007280 File Offset: 0x00005480
		public void Find()
		{
			foreach (Element element3 in this.host.coll.Where((Element element) => element is ContinuousRail))
			{
				try
				{
					ContinuousRail continuousRail = element3 as ContinuousRail;
					if (continuousRail.HostRailingId != ElementId.InvalidElementId)
					{
						this.host.ChildToParent[continuousRail.Id.IntegerValue] = continuousRail.HostRailingId.IntegerValue;
					}
				}
				catch (Exception ex)
				{
					this.host.log.WriteException("ERR_RailingParentFinder", ex);
				}
			}
			foreach (Element element2 in this.host.coll.Where((Element element) => element is Railing))
			{
				try
				{
					ICollection<ElementId> collection = RailingParentFinder.CollectSubElements(element2 as Railing);
					if (collection != null)
					{
						foreach (ElementId elementId in collection)
						{
							this.host.ChildToParent[elementId.IntegerValue] = element2.Id.IntegerValue;
						}
					}
				}
				catch (Exception ex2)
				{
					this.host.log.WriteException("ERR_RailingParentFinder", ex2);
				}
			}
		}

		// Token: 0x06000084 RID: 132 RVA: 0x00007450 File Offset: 0x00005650
		public static ICollection<ElementId> CollectSubElements(Railing railingElem)
		{
			IList<ElementId> list = new List<ElementId>();
			if (railingElem != null)
			{
				ElementId topRail = railingElem.TopRail;
				if (topRail != ElementId.InvalidElementId)
				{
					list.Add(topRail);
				}
				IList<ElementId> handRails = railingElem.GetHandRails();
				if (handRails != null)
				{
					foreach (ElementId elementId in handRails)
					{
						HandRail handRail = railingElem.Document.GetElement(elementId) as HandRail;
						if (handRail != null)
						{
							list.Add(elementId);
							foreach (ElementId elementId2 in handRail.GetSupports())
							{
								list.Add(elementId2);
							}
						}
					}
				}
			}
			return list;
		}

		// Token: 0x0400007E RID: 126
		private ParentFinder host;
	}
}