Return null when CurrentFocusView is not exist. 84/124784/2
authorminho.sun <minho.sun@samsung.com>
Wed, 12 Apr 2017 10:24:58 +0000 (19:24 +0900)
committerminho.sun <minho.sun@samsung.com>
Wed, 12 Apr 2017 10:59:18 +0000 (19:59 +0900)
commit0c9556d57025605134225244b8b6b960aa6b4dc2
tree24480c670a7f5c33e067ee5499ac7bfebc28e16c
parent39e164f224feec95bfde24799c82854fe66d8cb9
Return null when CurrentFocusView is not exist.

C# developer uses ? keyword for null check.

// Example
Tizen.Log.Error("NUI", " CurrentFocusView : " + currentFocusView?.Name);

To support this, CurrentFocusView() should return null when
there is no focused view.

Change-Id: I0806fb24fa7d9dd0626767e45cc590430f54332f
Signed-off-by: minho.sun <minho.sun@samsung.com>
Tizen.NUI/src/public/FocusManager.cs