Return null when CurrentFocusView is not exist.
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)
commit11f9d2722e0a87f754f81ae58551b9166b6165a2
tree782686b1a24f7b78ca1de0796408b1f6368433df
parent8c78f4c6b7bd6cff4d799419fa441668946a83fb
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>
src/Tizen.NUI/src/public/FocusManager.cs