[iOS] Add Platform Specific features for PrefersStatusBarHidden/UIStatusBarAnimation (#463)

* [iOS] Add Platform Specific features for PrefersStatusBarHidden/UIStatusBarAnimation

* Update docs

3 files changed, 78 insertions, 0 deletions

diff --git a/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/Page.cs b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/Page.cs
new file mode 100644
index 00000000..a32a1521
--- /dev/null
+++ b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/Page.cs
@@ -0,0 +1,60 @@
+namespace Xamarin.Forms.PlatformConfiguration.iOSSpecific
+{
+	using FormsElement = Forms.Page;
+
+	public static class Page
+	{
+		public static readonly BindableProperty PrefersStatusBarHiddenProperty =
+			BindableProperty.Create("PrefersStatusBarHidden", typeof(StatusBarHiddenMode), typeof(Page), StatusBarHiddenMode.Default);
+
+		public static StatusBarHiddenMode GetPrefersStatusBarHidden(BindableObject element)
+		{
+			return (StatusBarHiddenMode)element.GetValue(PrefersStatusBarHiddenProperty);
+		}
+
+		public static void SetPrefersStatusBarHidden(BindableObject element, StatusBarHiddenMode value)
+		{
+			element.SetValue(PrefersStatusBarHiddenProperty, value);
+		}
+
+		public static StatusBarHiddenMode PrefersStatusBarHidden(this IPlatformElementConfiguration<iOS, FormsElement> config)
+		{
+			return GetPrefersStatusBarHidden(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<iOS, FormsElement> SetPrefersStatusBarHidden(this IPlatformElementConfiguration<iOS, FormsElement> config, StatusBarHiddenMode value)
+		{
+			SetPrefersStatusBarHidden(config.Element, value);
+			return config;
+		}
+
+		public static readonly BindableProperty PreferredStatusBarUpdateAnimationProperty =
+			BindableProperty.Create("PreferredStatusBarUpdateAnimation", typeof(UIStatusBarAnimation), typeof(Page), UIStatusBarAnimation.None);
+
+		public static UIStatusBarAnimation GetPreferredStatusBarUpdateAnimation(BindableObject element)
+		{
+			return (UIStatusBarAnimation)element.GetValue(PreferredStatusBarUpdateAnimationProperty);
+		}
+
+		public static void SetPreferredStatusBarUpdateAnimation(BindableObject element, UIStatusBarAnimation value)
+		{
+			if (value == UIStatusBarAnimation.Fade)
+				element.SetValue(PreferredStatusBarUpdateAnimationProperty, value);
+			else if (value == UIStatusBarAnimation.Slide)
+				element.SetValue(PreferredStatusBarUpdateAnimationProperty, value);
+			else 
+				element.SetValue(PreferredStatusBarUpdateAnimationProperty, value);
+		}
+
+		public static UIStatusBarAnimation PreferredStatusBarUpdateAnimation(this IPlatformElementConfiguration<iOS, FormsElement> config)
+		{
+			return GetPreferredStatusBarUpdateAnimation(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<iOS, FormsElement> SetPreferredStatusBarUpdateAnimation(this IPlatformElementConfiguration<iOS, FormsElement> config, UIStatusBarAnimation value)
+		{
+			SetPreferredStatusBarUpdateAnimation(config.Element, value);
+			return config;
+		}
+	}
+}
diff --git a/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/StatusBarHiddenMode.cs b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/StatusBarHiddenMode.cs
new file mode 100644
index 00000000..57c54b89
--- /dev/null
+++ b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/StatusBarHiddenMode.cs
@@ -0,0 +1,9 @@
+namespace Xamarin.Forms.PlatformConfiguration.iOSSpecific
+{
+	public enum StatusBarHiddenMode
+	{
+		Default,
+		True,
+		False
+	}
+}
diff --git a/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/UIStatusBarAnimation.cs b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/UIStatusBarAnimation.cs
new file mode 100644
index 00000000..ac594d15
--- /dev/null
+++ b/Xamarin.Forms.Core/PlatformConfiguration/iOSSpecific/UIStatusBarAnimation.cs
@@ -0,0 +1,9 @@
+namespace Xamarin.Forms.PlatformConfiguration.iOSSpecific
+{
+	public enum UIStatusBarAnimation
+	{
+		None,
+		Slide,
+		Fade
+	}
+}