[iOS] Platform specifics to control ScrollView content touch delay (#563)

* can delay content touches optionally

* revert bug fix

* add back _tapGesture

* remove extra declaration

1 files changed, 30 insertions, 0 deletions

diff --git a/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/ScrollView.cs b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/ScrollView.cs
new file mode 100644
index 00000000..1a90a1f1
--- /dev/null
+++ b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/ScrollView.cs
@@ -0,0 +1,30 @@
+namespace Xamarin.Forms.PlatformConfiguration.iOSSpecific
+{
+	using FormsElement = Forms.ScrollView;
+
+	public static class ScrollView
+	{
+		public static readonly BindableProperty ShouldDelayContentTouchesProperty = BindableProperty.Create(nameof(ShouldDelayContentTouches), typeof(bool), typeof(ScrollView), true);
+
+		public static bool GetShouldDelayContentTouches(BindableObject element)
+		{
+			return (bool)element.GetValue(ShouldDelayContentTouchesProperty);
+		}
+
+		public static void SetShouldDelayContentTouches(BindableObject element, bool value)
+		{
+			element.SetValue(ShouldDelayContentTouchesProperty, value);
+		}
+
+		public static bool ShouldDelayContentTouches(this IPlatformElementConfiguration<iOS, FormsElement> config)
+		{
+			return GetShouldDelayContentTouches(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<iOS, FormsElement> SetShouldDelayContentTouches(this IPlatformElementConfiguration<iOS, FormsElement> config, bool value)
+		{
+			SetShouldDelayContentTouches(config.Element, value);
+			return config;
+		}
+	}
+}
\ No newline at end of file