using System;
using System.Collections.Generic;

namespace UnityEngine.Experimental.UIElements
{
	// Token: 0x0200033D RID: 829
	internal class UIElementsUtility
	{
		// Token: 0x06003377 RID: 13175 RVA: 0x0005085C File Offset: 0x0004EA5C
		static UIElementsUtility()
		{
			GUIUtility.takeCapture = (Action)Delegate.Combine(GUIUtility.takeCapture, new Action(UIElementsUtility.TakeCapture));
			GUIUtility.releaseCapture = (Action)Delegate.Combine(GUIUtility.releaseCapture, new Action(UIElementsUtility.ReleaseCapture));
			GUIUtility.processEvent = (Func<int, IntPtr, bool>)Delegate.Combine(GUIUtility.processEvent, new Func<int, IntPtr, bool>(UIElementsUtility.ProcessEvent));
			GUIUtility.cleanupRoots = (Action)Delegate.Combine(GUIUtility.cleanupRoots, new Action(UIElementsUtility.CleanupRoots));
			GUIUtility.endContainerGUIFromException = (Func<Exception, bool>)Delegate.Combine(GUIUtility.endContainerGUIFromException, new Func<Exception, bool>(UIElementsUtility.EndContainerGUIFromException));
		}

		// Token: 0x17000BB3 RID: 2995
		// (get) Token: 0x06003379 RID: 13177 RVA: 0x00050988 File Offset: 0x0004EB88
		internal static IDispatcher eventDispatcher
		{
			get
			{
				if (UIElementsUtility.s_EventDispatcher == null)
				{
					UIElementsUtility.s_EventDispatcher = new EventDispatcher();
				}
				return UIElementsUtility.s_EventDispatcher;
			}
		}

		// Token: 0x0600337A RID: 13178 RVA: 0x000509B8 File Offset: 0x0004EBB8
		private static void TakeCapture()
		{
			if (UIElementsUtility.s_ContainerStack.Count > 0)
			{
				IMGUIContainer imguicontainer = UIElementsUtility.s_ContainerStack.Peek();
				if (imguicontainer.GUIDepth == GUIUtility.Internal_GetGUIDepth())
				{
					if (UIElementsUtility.eventDispatcher.capture != null && UIElementsUtility.eventDispatcher.capture != imguicontainer)
					{
						Debug.Log(string.Format("Should not grab hot control with an active capture (current={0} new={1}", UIElementsUtility.eventDispatcher.capture, imguicontainer));
					}
					UIElementsUtility.eventDispatcher.TakeCapture(imguicontainer);
				}
			}
		}

		// Token: 0x0600337B RID: 13179 RVA: 0x00050A40 File Offset: 0x0004EC40
		private static void ReleaseCapture()
		{
			UIElementsUtility.eventDispatcher.RemoveCapture();
		}

		// Token: 0x0600337C RID: 13180 RVA: 0x00050A50 File Offset: 0x0004EC50
		private static bool ProcessEvent(int instanceID, IntPtr nativeEventPtr)
		{
			Panel panel;
			bool flag;
			if (nativeEventPtr != IntPtr.Zero && UIElementsUtility.s_UIElementsCache.TryGetValue(instanceID, out panel))
			{
				UIElementsUtility.s_EventInstance.CopyFromPtr(nativeEventPtr);
				flag = UIElementsUtility.DoDispatch(panel);
			}
			else
			{
				flag = false;
			}
			return flag;
		}

		// Token: 0x0600337D RID: 13181 RVA: 0x00050AA0 File Offset: 0x0004ECA0
		private static void CleanupRoots()
		{
			UIElementsUtility.s_EventInstance = null;
			UIElementsUtility.s_EventDispatcher = null;
			UIElementsUtility.s_UIElementsCache = null;
			UIElementsUtility.s_ContainerStack = null;
		}

		// Token: 0x0600337E RID: 13182 RVA: 0x00050ABC File Offset: 0x0004ECBC
		private static bool EndContainerGUIFromException(Exception exception)
		{
			if (UIElementsUtility.s_ContainerStack.Count > 0)
			{
				GUIUtility.EndContainer();
				UIElementsUtility.s_ContainerStack.Pop();
			}
			return GUIUtility.ShouldRethrowException(exception);
		}

		// Token: 0x0600337F RID: 13183 RVA: 0x00050AFC File Offset: 0x0004ECFC
		internal static void BeginContainerGUI(GUILayoutUtility.LayoutCache cache, int instanceID, Event evt, IMGUIContainer container)
		{
			GUIUtility.BeginContainer(instanceID);
			UIElementsUtility.s_ContainerStack.Push(container);
			GUIUtility.s_SkinMode = (int)container.contextType;
			GUIUtility.s_OriginalID = instanceID;
			Event.current = evt;
			GUILayoutUtility.BeginContainer(cache);
			GUIUtility.ResetGlobalState();
			Rect rect = container.lastWorldClip;
			if (rect.width == 0f || rect.height == 0f)
			{
				rect = container.globalBound;
			}
			Matrix4x4 matrix4x = Matrix4x4.TRS(new Vector3(container.position.x, container.position.y, 0f), Quaternion.identity, Vector3.one);
			GUIClip.SetTransform(container.globalTransform * matrix4x, rect);
		}

		// Token: 0x06003380 RID: 13184 RVA: 0x00050BB8 File Offset: 0x0004EDB8
		internal static void EndContainerGUI()
		{
			if (Event.current.type == EventType.Layout && UIElementsUtility.s_ContainerStack.Count > 0)
			{
				Rect globalBound = UIElementsUtility.s_ContainerStack.Peek().globalBound;
				GUILayoutUtility.LayoutFromContainer(globalBound.width, globalBound.height);
			}
			GUILayoutUtility.SelectIDList(GUIUtility.s_OriginalID, false);
			GUIContent.ClearStaticCache();
			if (UIElementsUtility.s_ContainerStack.Count > 0)
			{
				GUIUtility.EndContainer();
				UIElementsUtility.s_ContainerStack.Pop();
			}
		}

		// Token: 0x06003381 RID: 13185 RVA: 0x00050C40 File Offset: 0x0004EE40
		internal static ContextType GetGUIContextType()
		{
			return (GUIUtility.s_SkinMode != 0) ? ContextType.Editor : ContextType.Player;
		}

		// Token: 0x06003382 RID: 13186 RVA: 0x00050C68 File Offset: 0x0004EE68
		private static bool DoDispatch(BaseVisualElementPanel panel)
		{
			bool flag;
			if (UIElementsUtility.s_EventInstance.type == EventType.Repaint)
			{
				panel.Repaint(UIElementsUtility.s_EventInstance);
				flag = panel.IMGUIContainersCount > 0;
			}
			else
			{
				panel.ValidateLayout();
				EventPropagation eventPropagation = UIElementsUtility.s_EventDispatcher.DispatchEvent(UIElementsUtility.s_EventInstance, panel);
				if (eventPropagation == EventPropagation.Stop)
				{
					panel.visualTree.Dirty(ChangeType.Repaint);
				}
				flag = eventPropagation == EventPropagation.Stop;
			}
			return flag;
		}

		// Token: 0x06003383 RID: 13187 RVA: 0x00050CE0 File Offset: 0x0004EEE0
		internal static Dictionary<int, Panel>.Enumerator GetPanelsIterator()
		{
			return UIElementsUtility.s_UIElementsCache.GetEnumerator();
		}

		// Token: 0x06003384 RID: 13188 RVA: 0x00050D00 File Offset: 0x0004EF00
		internal static Panel FindOrCreatePanel(int instanceId, ContextType contextType, IDataWatchService dataWatch = null, LoadResourceFunction loadResourceFunction = null)
		{
			Panel panel;
			if (!UIElementsUtility.s_UIElementsCache.TryGetValue(instanceId, out panel))
			{
				panel = new Panel(instanceId, contextType, loadResourceFunction, dataWatch, UIElementsUtility.eventDispatcher);
				UIElementsUtility.s_UIElementsCache.Add(instanceId, panel);
			}
			else
			{
				Debug.Assert(contextType == panel.contextType, "Context type mismatch");
			}
			return panel;
		}

		// Token: 0x06003385 RID: 13189 RVA: 0x00050D60 File Offset: 0x0004EF60
		internal static Panel FindOrCreatePanel(int instanceId)
		{
			return UIElementsUtility.FindOrCreatePanel(instanceId, UIElementsUtility.GetGUIContextType(), null, null);
		}

		// Token: 0x06003386 RID: 13190 RVA: 0x00050D84 File Offset: 0x0004EF84
		internal static void BeginBuilder(VisualContainer w)
		{
		}

		// Token: 0x04000A99 RID: 2713
		private static Stack<IMGUIContainer> s_ContainerStack = new Stack<IMGUIContainer>();

		// Token: 0x04000A9A RID: 2714
		private static Dictionary<int, Panel> s_UIElementsCache = new Dictionary<int, Panel>();

		// Token: 0x04000A9B RID: 2715
		private static Event s_EventInstance = new Event();

		// Token: 0x04000A9C RID: 2716
		private static EventDispatcher s_EventDispatcher;
	}
}