[NUI][ATSPI] Make ScrollableBase work for ScrollToChild

The ScrollToChild is working for that the scrollable brings its child in
the view port to make the child show.

The ScrollableBase also needs to show its child if the child gets the
accessibility highlight.

So this patch is overriding the AccessibilityScrollToChild.

diff --git a/src/Tizen.NUI.Components/Controls/ScrollableBase.cs b/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
index 9799798..f2550d1 100755 (executable)
--- a/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
+++ b/src/Tizen.NUI.Components/Controls/ScrollableBase.cs
@@ -1892,6 +1892,69 @@ namespace Tizen.NUI.Components
             }
             return nextFocusedView;
         }
+
+        /// <inheritdoc/>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        protected override bool AccessibilityScrollToChild(View child)
+        {
+            if (child == null)
+            {
+                return false;
+            }
+
+            if (ScrollingDirection == Direction.Horizontal)
+            {
+                if (child.ScreenPosition.X + child.Size.Width <= this.ScreenPosition.X)
+                {
+                    if (SnapToPage)
+                    {
+                        PageSnap(PageFlickThreshold + 1);
+                    }
+                    else
+                    {
+                        ScrollTo((float)(child.ScreenPosition.X - ContentContainer.ScreenPosition.X), false);
+                    }
+                }
+                else if (child.ScreenPosition.X >= this.ScreenPosition.X + this.Size.Width)
+                {
+                    if (SnapToPage)
+                    {
+                        PageSnap(-(PageFlickThreshold + 1));
+                    }
+                    else
+                    {                        
+                        ScrollTo((float)(child.ScreenPosition.X + child.Size.Width - ContentContainer.ScreenPosition.X - this.Size.Width), false);
+                    }
+                }
+            }
+            else
+            {
+                if (child.ScreenPosition.Y + child.Size.Height <= this.ScreenPosition.Y)
+                {
+                    if (SnapToPage)
+                    {
+                        PageSnap(PageFlickThreshold + 1);
+                    }
+                    else
+                    {                        
+                        ScrollTo((float)(child.ScreenPosition.Y - ContentContainer.ScreenPosition.Y), false);
+                    }
+                }
+                else if (child.ScreenPosition.Y >= this.ScreenPosition.Y + this.Size.Height)
+                {
+                    if (SnapToPage)
+                    {
+                        PageSnap(-(PageFlickThreshold + 1));
+                    }
+                    else
+                    {                       
+                        ScrollTo((float)(child.ScreenPosition.Y + child.Size.Height - ContentContainer.ScreenPosition.Y - this.Size.Height), false);
+                    }
+                }
+            }
+
+            return true;
+        }
     }
 
 } // namespace