Revert "ios: raise touch event on touchbegin. (#6989) fixes #3320" (#7787)

This reverts commit dca82ed828.

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue3320.cs

@@ -1,55 +0,0 @@
-using System.Diagnostics;
-using Xamarin.Forms.CustomAttributes;
-using Xamarin.Forms.Internals;
-using System.Collections.ObjectModel;
-using System;
-
-#if UITEST
-using NUnit.Framework;
-using Xamarin.UITest;
-#endif
-
-namespace Xamarin.Forms.Controls.Issues
-{
-
-#if UITEST
-	[NUnit.Framework.Category(Core.UITests.UITestCategories.UwpIgnore)]
-#endif
-	[Preserve(AllMembers = true)]
-	[Issue(IssueTracker.Github, 3320, "[iOS] Cells aren't highlighted on touch-down when the ListView's CachingStrategy is set to RecycleElement", PlatformAffected.iOS)]
-	public class Issue3320 : TestContentPage
-	{
-
-		protected override void Init()
-		{
-			Title = "List Page";
-			ObservableCollection<string> source = new ObservableCollection<string>();
-			for (int i = 0; i < 50; i++)
-			{
-
-				source.Add($"ListItem:{i}");
-			}
-
-			var listview = new ListView(ListViewCachingStrategy.RecycleElement)
-			{
-				ItemsSource = source
-			};
-
-			this.Content = listview;
-		}
-
-#if UITEST
-		[Test]
-		[Description("Verify that SelectedItem is selected on PressAndHold")]
-		[UiTest(typeof(ViewCell))]
-		[UiTest(typeof(ListView))]
-		[UiTest(typeof(ListView), "TapAndHoldSelectedItem")]
-		public void Issue3320TextTapAndHoldSelectsRow()
-		{
-			RunningApp.TouchAndHold(q => q.Marked("ListItem:5"));
-			RunningApp.Screenshot("TouchAndHold-ItemIsSelected");
-		}
-#endif
-
-	}
-}

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Xamarin.Forms.Controls.Issues.Shared.projitems

@@ -18,7 +18,6 @@
     <Compile Include="$(MSBuildThisFileDirectory)CollectionViewHeaderFooterTemplate.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)CollectionViewHeaderFooterView.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)CollectionViewItemsUpdatingScrollMode.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Issue3320.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue3475.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Issue5354.xaml.cs">
       <SubType>Code</SubType>

Xamarin.Forms.Platform.iOS/ContextActionCell.cs

@@ -662,28 +662,7 @@ namespace Xamarin.Forms.Platform.iOS
 		{
 			NSIndexPath _lastPath;
 
-			public override void TouchesEnded(NSSet touches, UIEvent evt)
-			{
-				if (_lastPath == null)
-					return;
-
-				var table = (UITableView)View;
-				if (!_lastPath.Equals(table.IndexPathForSelectedRow))
-					table.SelectRow(_lastPath, false, UITableViewScrollPosition.None);
-				table.Source.RowSelected(table, _lastPath);
-			}
-
-			public override void TouchesBegan(NSSet touches, UIEvent evt)
-			{
-				if (_lastPath == null)
-					return;
-
-				var table = (UITableView)View;
-				if (!_lastPath.Equals(table.IndexPathForSelectedRow))
-					table.Source.RowHighlighted(table, _lastPath); 
-			}
-
-			public SelectGestureRecognizer()
+			public SelectGestureRecognizer() : base(Tapped)
 			{
 				ShouldReceiveTouch = (recognizer, touch) =>
 				{
@@ -699,6 +678,19 @@ namespace Xamarin.Forms.Platform.iOS
 					return cell != null;
 				};
 			}
+
+			static void Tapped(UIGestureRecognizer recognizer)
+			{
+				var selector = (SelectGestureRecognizer)recognizer;
+
+				if (selector._lastPath == null)
+					return;
+
+				var table = (UITableView)recognizer.View;
+				if (!selector._lastPath.Equals(table.IndexPathForSelectedRow))
+					table.SelectRow(selector._lastPath, false, UITableViewScrollPosition.None);
+				table.Source.RowSelected(table, selector._lastPath);
+			}
 		}
 
 		class MoreActionSheetController : UIAlertController

Xamarin.Forms.Platform.iOS/Renderers/ListViewRenderer.cs

@@ -952,7 +952,6 @@ namespace Xamarin.Forms.Platform.iOS
 			bool _disposed;
 			bool _wasEmpty;
 			bool _estimatedRowHeight;
-			NSIndexPath _lastTouchedCell;
 
 			public UITableViewRowAnimation ReloadSectionsAnimation { get; set; } = UITableViewRowAnimation.Automatic;
 
@@ -995,47 +994,12 @@ namespace Xamarin.Forms.Platform.iOS
 
 			public override void DraggingEnded(UIScrollView scrollView, bool willDecelerate)
 			{
-				if (_uiTableView != null)
-				{
-					var heldSelectedRow = _uiTableView.IndexPathsForSelectedRows;
-					if (heldSelectedRow != null)
-						foreach (var row in heldSelectedRow)
-						{
-							var cell = _uiTableView.CellAt(row);
-							if (cell != null)
-								cell.Selected = true;
-						}
-				}
-
 				_isDragging = false;
 				_uiTableViewController.UpdateShowHideRefresh(false);
 			}
 
 			public override void DraggingStarted(UIScrollView scrollView)
 			{
-				if (_uiTableView != null)
-				{
-					if (_lastTouchedCell != null)
-					{
-						var lastTouchCell = _uiTableView.CellAt(_lastTouchedCell);
-						if (lastTouchCell != null)
-						{
-							lastTouchCell.Selected = false;
-						}
-
-						_lastTouchedCell = null;
-					}
-
-					var heldSelectedRow = _uiTableView.IndexPathsForSelectedRows;
-					if(heldSelectedRow != null)
-						foreach (var row in heldSelectedRow)
-						{
-							var cell = _uiTableView.CellAt(row);
-							if(cell != null)
-								cell.Selected = false;
-						}
-				}
-
 				_isDragging = true;
 			}
 
@@ -1052,19 +1016,6 @@ namespace Xamarin.Forms.Platform.iOS
 				_setupSelection = true;
 			}
 
-			public override void RowHighlighted(UITableView tableView, NSIndexPath rowIndexPath)
-			{
-				TouchCell(rowIndexPath);
-			}
-
-			void TouchCell(NSIndexPath rowIndexPath)
-			{
-				var cell = _uiTableView.CellAt(rowIndexPath);
-				if(cell!= null)
-					cell.Selected = true;
-				_lastTouchedCell = rowIndexPath;
-			}
-
 			public override UITableViewCell GetCell(UITableView tableView, NSIndexPath indexPath)
 			{
 				Cell cell;
@@ -1221,7 +1172,6 @@ namespace Xamarin.Forms.Platform.iOS
 
 			public override void RowSelected(UITableView tableView, NSIndexPath indexPath)
 			{
-				_lastTouchedCell = null;
 				var cell = tableView.CellAt(indexPath);
 
 				if (cell == null)