Unable to scroll m.facebook.com login page.

[Title]     Unable to scroll m.facebook.com login page once start scrolling from edit field
[Issue#]    WEB-3684
[Cause]     The scroll events are consumed by text field when we try to scroll the page from it.
[Solution]  As text field has single line of text, it should take only horizontal scroll events.
            Avoiding vertical scroll handling on text fields.
[Developer] Divakar (diviakar.a@samsung.com)

Change-Id: I0eeb9d8c2d4af4e79be51c5380f5ef73a2a9a927

diff --git a/Source/WebCore/page/EventHandler.cpp b/Source/WebCore/page/EventHandler.cpp
index 4576f06..40ddb38 100755 (executable)
--- a/Source/WebCore/page/EventHandler.cpp
+++ b/Source/WebCore/page/EventHandler.cpp
@@ -1283,7 +1283,13 @@ bool EventHandler::scrollOverflow(const FloatPoint& trajectoryVector)
                 renderText->setScrollLeft(leftScrollOffset);
                 renderText->setScrollTop((int)trajectoryVector.y());
                 m_mousePressNode->document()->frame()->selection()->setCaretVisible(true);
-                scrolled = true;
+                float deltaX = trajectoryVector.x();
+                float deltaY = trajectoryVector.y();
+                deltaX = (deltaX < 0) ? -deltaX : deltaX;
+                deltaY = (deltaY < 0) ? -deltaY : deltaY;
+                // Allow only horizontal scrolling on text field.
+                if (deltaX > deltaY)
+                    scrolled = true;
             }
         }
 #endif