Add Focus related properties for VEsubmit/tizen/20170413.072333

TASK=TCAPI-2264

- Make sure that all these API should be invoked after all renderers are created. (e.g. use it inside Page.OnAppearing())

Change-Id: Ie441a067d5a7b94af120985b0a691fad6ce8250f

6 files changed, 412 insertions, 5 deletions

diff --git a/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/FocusDirection.cs b/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/FocusDirection.cs
new file mode 100644
index 00000000..b4f15e12
--- /dev/null
+++ b/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/FocusDirection.cs
@@ -0,0 +1,16 @@
+using System.ComponentModel;
+
+namespace Xamarin.Forms.PlatformConfiguration.TizenSpecific
+{
+	[EditorBrowsable(EditorBrowsableState.Never)]
+	public enum FocusDirection
+	{
+		None,
+		Back,
+		Forward,
+		Up,
+		Down,
+		Right,
+		Left
+	}
+}
\ No newline at end of file
diff --git a/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/VisualElement.cs b/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/VisualElement.cs
index 7eb4c718..40c7d75e 100644
--- a/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/VisualElement.cs
+++ b/Xamarin.Forms.Core/PlatformConfiguration/TizenSpecific/VisualElement.cs
@@ -1,3 +1,5 @@
+using System.ComponentModel;
+
 namespace Xamarin.Forms.PlatformConfiguration.TizenSpecific
 {
 	using FormsElement = Forms.VisualElement;
@@ -5,6 +7,23 @@ namespace Xamarin.Forms.PlatformConfiguration.TizenSpecific
 	{
 		public static readonly BindableProperty StyleProperty = BindableProperty.Create("ThemeStyle", typeof(string), typeof(VisualElement), default(string));
 
+		public static readonly BindableProperty IsFocusAllowedProperty = BindableProperty.Create("IsFocusAllowed", typeof(bool), typeof(VisualElement), true);
+
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public static readonly BindableProperty NextFocusDirectionProperty = BindableProperty.Create("NextFocusDirection", typeof(FocusDirection), typeof(VisualElement), FocusDirection.None,  propertyChanged: OnNextFocusDirectionPropertyChanged);
+
+		public static readonly BindableProperty NextFocusUpViewProperty = BindableProperty.Create("NextFocusUpView", typeof(View), typeof(VisualElement), default(View));
+
+		public static readonly BindableProperty NextFocusDownViewProperty = BindableProperty.Create("NextFocusDownView", typeof(View), typeof(VisualElement), default(View));
+
+		public static readonly BindableProperty NextFocusLeftViewProperty = BindableProperty.Create("NextFocusLeftView", typeof(View), typeof(VisualElement), default(View));
+
+		public static readonly BindableProperty NextFocusRightViewProperty = BindableProperty.Create("NextFocusRightView", typeof(View), typeof(VisualElement), default(View));
+
+		public static readonly BindableProperty NextFocusBackViewProperty = BindableProperty.Create("NextFocusBackView", typeof(View), typeof(VisualElement), default(View));
+
+		public static readonly BindableProperty NextFocusForwardViewProperty = BindableProperty.Create("NextFocusForwardView", typeof(View), typeof(VisualElement), default(View));
+
 		public static string GetStyle(BindableObject element)
 		{
 			return (string)element.GetValue(StyleProperty);
@@ -25,5 +44,218 @@ namespace Xamarin.Forms.PlatformConfiguration.TizenSpecific
 			SetStyle(config.Element, value);
 			return config;
 		}
+
+		public static bool IsFocusAllowed(BindableObject element)
+		{
+			return (bool)element.GetValue(IsFocusAllowedProperty);
+		}
+
+		public static void SetFocusAllowed(BindableObject element, bool value)
+		{
+			element.SetValue(IsFocusAllowedProperty, value);
+		}
+
+		public static bool IsFocusAllowed(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return IsFocusAllowed(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetFocusAllowed(this IPlatformElementConfiguration<Tizen, FormsElement> config, bool value)
+		{
+			SetFocusAllowed(config.Element, value);
+			return config;
+		}
+
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public static FocusDirection GetNextFocusDirection(BindableObject element)
+		{
+			return (FocusDirection)element.GetValue(NextFocusDirectionProperty);
+		}
+
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public static void SetNextFocusDirection(BindableObject element, FocusDirection value)
+		{
+			element.SetValue(NextFocusDirectionProperty, value);
+		}
+
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public static FocusDirection GetNextFocusDirection(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusDirection(config.Element);
+		}
+
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusDirection(this IPlatformElementConfiguration<Tizen, FormsElement> config, FocusDirection value)
+		{
+			SetNextFocusDirection(config.Element, value);
+			return config;
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> MoveFocusUp(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			SetNextFocusDirection(config.Element, FocusDirection.Up);
+			return config;
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> MoveFocusDown(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			SetNextFocusDirection(config.Element, FocusDirection.Down);
+			return config;
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> MoveFocusLeft(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			SetNextFocusDirection(config.Element, FocusDirection.Left);
+			return config;
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> MoveFocusRight(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			SetNextFocusDirection(config.Element, FocusDirection.Right);
+			return config;
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> MoveFocusBack(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			SetNextFocusDirection(config.Element, FocusDirection.Back);
+			return config;
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> MoveFocusForward(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			SetNextFocusDirection(config.Element, FocusDirection.Forward);
+			return config;
+		}
+
+		public static View GetNextFocusUpView(BindableObject element)
+		{
+			return (View)element.GetValue(NextFocusUpViewProperty);
+		}
+
+		public static void SetNextFocusUpView(BindableObject element, View value)
+		{
+			element.SetValue(NextFocusUpViewProperty, value);
+		}
+
+		public static View GetNextFocusUpView(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusUpView(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusUpView(this IPlatformElementConfiguration<Tizen, FormsElement> config, View value)
+		{
+			SetNextFocusUpView(config.Element, value);
+			return config;
+		}
+
+		public static View GetNextFocusDownView(BindableObject element)
+		{
+			return (View)element.GetValue(NextFocusDownViewProperty);
+		}
+
+		public static void SetNextFocusDownView(BindableObject element, View value)
+		{
+			element.SetValue(NextFocusDownViewProperty, value);
+		}
+
+		public static View GetNextFocusDownView(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusDownView(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusDownView(this IPlatformElementConfiguration<Tizen, FormsElement> config, View value)
+		{
+			SetNextFocusDownView(config.Element, value);
+			return config;
+		}
+
+		public static View GetNextFocusLeftView(BindableObject element)
+		{
+			return (View)element.GetValue(NextFocusLeftViewProperty);
+		}
+
+		public static void SetNextFocusLeftView(BindableObject element, View value)
+		{
+			element.SetValue(NextFocusLeftViewProperty, value);
+		}
+
+		public static View GetNextFocusLeftView(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusLeftView(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusLeftView(this IPlatformElementConfiguration<Tizen, FormsElement> config, View value)
+		{
+			SetNextFocusLeftView(config.Element, value);
+			return config;
+		}
+
+		public static View GetNextFocusRightView(BindableObject element)
+		{
+			return (View)element.GetValue(NextFocusRightViewProperty);
+		}
+
+		public static void SetNextFocusRightView(BindableObject element, View value)
+		{
+			element.SetValue(NextFocusRightViewProperty, value);
+		}
+
+		public static View GetNextFocusRightView(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusRightView(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusRightView(this IPlatformElementConfiguration<Tizen, FormsElement> config, View value)
+		{
+			SetNextFocusRightView(config.Element, value);
+			return config;
+		}
+
+		public static View GetNextFocusBackView(BindableObject element)
+		{
+			return (View)element.GetValue(NextFocusBackViewProperty);
+		}
+
+		public static void SetNextFocusBackView(BindableObject element, View value)
+		{
+			element.SetValue(NextFocusBackViewProperty, value);
+		}
+
+		public static View GetNextFocusBackView(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusBackView(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusBackView(this IPlatformElementConfiguration<Tizen, FormsElement> config, View value)
+		{
+			SetNextFocusBackView(config.Element, value);
+			return config;
+		}
+
+		public static View GetNextFocusForwardView(BindableObject element)
+		{
+			return (View)element.GetValue(NextFocusForwardViewProperty);
+		}
+
+		public static void SetNextFocusForwardView(BindableObject element, View value)
+		{
+			element.SetValue(NextFocusForwardViewProperty, value);
+		}
+
+		public static View GetNextFocusForwardView(this IPlatformElementConfiguration<Tizen, FormsElement> config)
+		{
+			return GetNextFocusForwardView(config.Element);
+		}
+
+		public static IPlatformElementConfiguration<Tizen, FormsElement> SetNextFocusForwardView(this IPlatformElementConfiguration<Tizen, FormsElement> config, View value)
+		{
+			SetNextFocusForwardView(config.Element, value);
+			return config;
+		}
+
+		static void OnNextFocusDirectionPropertyChanged(BindableObject bindable, object oldvalue, object newvalue)
+		{
+			bindable.SetValue(NextFocusDirectionProperty, FocusDirection.None);
+		}
 	}
-}
+}
\ No newline at end of file
diff --git a/Xamarin.Forms.Core/Xamarin.Forms.Core.csproj b/Xamarin.Forms.Core/Xamarin.Forms.Core.csproj
index 5efcf42e..0e7a0caf 100644
--- a/Xamarin.Forms.Core/Xamarin.Forms.Core.csproj
+++ b/Xamarin.Forms.Core/Xamarin.Forms.Core.csproj
@@ -102,6 +102,7 @@
     <Compile Include="PlatformConfiguration\iOSSpecific\UIStatusBarAnimation.cs" />
     <Compile Include="PlatformConfiguration\iOSSpecific\UpdateMode.cs" />
     <Compile Include="PlatformConfiguration\iOSSpecific\VisualElement.cs" />
+    <Compile Include="PlatformConfiguration\TizenSpecific\FocusDirection.cs" />
     <Compile Include="PlatformConfiguration\TizenSpecific\StyleValues.cs" />
     <Compile Include="PlatformConfiguration\TizenSpecific\VisualElement.cs" />
     <Compile Include="PlatformConfiguration\TizenSpecific\Page.cs" />
diff --git a/Xamarin.Forms.Platform.Tizen/Extensions/FocusDirectionExtensions.cs b/Xamarin.Forms.Platform.Tizen/Extensions/FocusDirectionExtensions.cs
new file mode 100644
index 00000000..fe7d090f
--- /dev/null
+++ b/Xamarin.Forms.Platform.Tizen/Extensions/FocusDirectionExtensions.cs
@@ -0,0 +1,29 @@
+using Xamarin.Forms.PlatformConfiguration.TizenSpecific;
+using EFocusDirection = ElmSharp.FocusDirection;
+
+namespace Xamarin.Forms.Platform.Tizen
+{
+	public static class FocusDirectionExtensions
+	{
+		public static EFocusDirection ToNative(this FocusDirection direction)
+		{
+			switch (direction)
+			{
+				case FocusDirection.Back:
+					return EFocusDirection.Previous;
+				case FocusDirection.Forward:
+					return EFocusDirection.Next;
+				case FocusDirection.Up:
+					return EFocusDirection.Up;
+				case FocusDirection.Down:
+					return EFocusDirection.Down;
+				case FocusDirection.Right:
+					return EFocusDirection.Right;
+				case FocusDirection.Left:
+					return EFocusDirection.Left;
+				default:
+					return EFocusDirection.Next;
+			}
+		}
+	}
+}
diff --git a/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs b/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs
index 6baff194..51170bd6 100644
--- a/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs
+++ b/Xamarin.Forms.Platform.Tizen/Renderers/VisualElementRenderer.cs
@@ -3,11 +3,10 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.ComponentModel;
 using ElmSharp;
-using EColor = ElmSharp.Color;
 using ESize = ElmSharp.Size;
 using ERect = ElmSharp.Rect;
-using ERectangle = ElmSharp.Rectangle;
 using Specific = Xamarin.Forms.PlatformConfiguration.TizenSpecific.VisualElement;
+using XFocusDirection = Xamarin.Forms.PlatformConfiguration.TizenSpecific.FocusDirection;
 
 namespace Xamarin.Forms.Platform.Tizen
 {
@@ -55,6 +54,14 @@ namespace Xamarin.Forms.Platform.Tizen
 			RegisterPropertyHandler(VisualElement.InputTransparentProperty, UpdateInputTransparent);
 			RegisterPropertyHandler(VisualElement.BackgroundColorProperty, UpdateBackgroundColor);
 			RegisterPropertyHandler(Specific.StyleProperty, UpdateThemeStyle);
+			RegisterPropertyHandler(Specific.IsFocusAllowedProperty, UpdateFocusAllowed);
+			RegisterPropertyHandler(Specific.NextFocusDirectionProperty, UpdateFocusDirection);
+			RegisterPropertyHandler(Specific.NextFocusUpViewProperty, UpdateFocusUpView);
+			RegisterPropertyHandler(Specific.NextFocusDownViewProperty, UpdateFocusDownView);
+			RegisterPropertyHandler(Specific.NextFocusLeftViewProperty, UpdateFocusLeftView);
+			RegisterPropertyHandler(Specific.NextFocusRightViewProperty, UpdateFocusRightView);
+			RegisterPropertyHandler(Specific.NextFocusBackViewProperty, UpdateFocusBackView);
+			RegisterPropertyHandler(Specific.NextFocusForwardViewProperty, UpdateFocusForwardView);
 
 			RegisterPropertyHandler(VisualElement.AnchorXProperty, ApplyTransformation);
 			RegisterPropertyHandler(VisualElement.AnchorYProperty, ApplyTransformation);
@@ -778,6 +785,128 @@ namespace Xamarin.Forms.Platform.Tizen
 		{
 		}
 
+		void UpdateFocusAllowed(bool initialize)
+		{
+			if (!initialize)
+			{
+				var widget = NativeView as Widget;
+				if (widget != null)
+				{
+					widget.AllowFocus(Specific.IsFocusAllowed(Element));
+				}
+				else
+				{
+					Log.Warn("{0} uses {1} which does not support Focus management", this, NativeView);
+				}
+			}
+		}
+
+		void UpdateFocusDirection(bool initialize)
+		{
+			var direction = Specific.GetNextFocusDirection(Element);
+			if (!initialize && direction != XFocusDirection.None)
+			{
+				var widget = NativeView as Widget;
+				if (widget != null)
+				{
+					widget.FocusNext(direction.ToNative());
+				}
+				else
+				{
+					Log.Warn("{0} uses {1} which does not support Focus management", this, NativeView);
+				}
+			}
+		}
+
+		void SetNextFocusViewInternal(XFocusDirection direction)
+		{
+			var widget = NativeView as Widget;
+			if (widget != null)
+			{
+				EvasObject nativeControl;
+				switch (direction)
+				{
+					case XFocusDirection.Back:
+						nativeControl = Platform.GetRenderer(Specific.GetNextFocusBackView(Element))?.NativeView;
+						break;
+					case XFocusDirection.Forward:
+						nativeControl = Platform.GetRenderer(Specific.GetNextFocusForwardView(Element))?.NativeView;
+						break;
+					case XFocusDirection.Up:
+						nativeControl = Platform.GetRenderer(Specific.GetNextFocusUpView(Element))?.NativeView;
+						break;
+					case XFocusDirection.Down:
+						nativeControl = Platform.GetRenderer(Specific.GetNextFocusDownView(Element))?.NativeView;
+						break;
+					case XFocusDirection.Right:
+						nativeControl = Platform.GetRenderer(Specific.GetNextFocusRightView(Element))?.NativeView;
+						break;
+					case XFocusDirection.Left:
+						nativeControl = Platform.GetRenderer(Specific.GetNextFocusLeftView(Element))?.NativeView;
+						break;
+					default:
+						nativeControl = null;
+						break;
+				}
+				if (nativeControl != null)
+				{
+					widget.SetNextFocusObject(nativeControl, direction.ToNative());
+				}
+			}
+			else
+			{
+				Log.Warn("{0} uses {1} which does not support Focus management", this, NativeView);
+			}
+		}
+
+		void UpdateFocusUpView(bool initialize)
+		{
+			if (!initialize && Specific.GetNextFocusUpView(Element) != null)
+			{
+				SetNextFocusViewInternal(XFocusDirection.Up);
+			}
+		}
+
+		void UpdateFocusDownView(bool initialize)
+		{
+			if (!initialize && Specific.GetNextFocusDownView(Element) != null)
+			{
+				SetNextFocusViewInternal(XFocusDirection.Down);
+			}
+		}
+
+		void UpdateFocusLeftView(bool initialize)
+		{
+			if (!initialize && Specific.GetNextFocusLeftView(Element) != null)
+			{
+				SetNextFocusViewInternal(XFocusDirection.Left);
+			}
+		}
+
+		void UpdateFocusRightView(bool initialize)
+		{
+			if (!initialize && Specific.GetNextFocusRightView(Element) != null)
+			{
+				SetNextFocusViewInternal(XFocusDirection.Right);
+			}
+		}
+
+		void UpdateFocusBackView(bool initialize)
+		{
+			if (!initialize && Specific.GetNextFocusBackView(Element) != null)
+			{
+				SetNextFocusViewInternal(XFocusDirection.Back);
+			}
+		}
+
+		void UpdateFocusForwardView(bool initialize)
+		{
+			if (!initialize && Specific.GetNextFocusForwardView(Element) != null)
+			{
+				SetNextFocusViewInternal(XFocusDirection.Forward);
+			}
+		}
+
 		void ApplyRotation(EvasMap map, ERect geometry, ref bool changed)
 		{
 			var rotationX = Element.RotationX;
@@ -890,4 +1019,4 @@ namespace Xamarin.Forms.Platform.Tizen
 			--s_ignoreCount;
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/packaging/xamarin-forms-tizen.spec b/packaging/xamarin-forms-tizen.spec
index 0a280c12..f230c3d0 100644
--- a/packaging/xamarin-forms-tizen.spec
+++ b/packaging/xamarin-forms-tizen.spec
@@ -2,7 +2,7 @@
 %define XF_RELEASE 214
 
 # Increase this XF_DEV_VERSION when any public APIs of Xamarin.Forms.Platform.Tizen are changed.
-%define XF_DEV_VERSION 003
+%define XF_DEV_VERSION 004
 
 Name: xamarin-forms-tizen
 Summary: Xamarin.Forms for Tizen platform