don't scroll title bar while editing

      Bug: 3405814
      Check if scroll is user initiated and if user is editing url
      before hiding titlebar when scrolling

Change-Id: Icc32ef1cc83018021ebe12402aec016c9555e3a9
diff --git a/src/com/android/browser/ScrollWebView.java b/src/com/android/browser/ScrollWebView.java
index e2ef902..1d7f23a 100644
--- a/src/com/android/browser/ScrollWebView.java
+++ b/src/com/android/browser/ScrollWebView.java
@@ -18,6 +18,7 @@
 
 import android.content.Context;
 import android.util.AttributeSet;
+import android.view.MotionEvent;
 import android.view.View;
 import android.webkit.WebView;
 
@@ -31,6 +32,7 @@
     private ScrollListener mScrollListener;
     private boolean mIsCancelled;
     private boolean mBackgroundRemoved = false;
+    private boolean mUserInitiated = false;
 
     /**
      * @param context
@@ -71,7 +73,7 @@
     // scroll runnable implementation
     public void run() {
         if (!mIsCancelled && (mScrollListener != null)) {
-            mScrollListener.onScroll(getVisibleTitleHeight());
+            mScrollListener.onScroll(getVisibleTitleHeight(), mUserInitiated);
         }
     }
 
@@ -89,6 +91,17 @@
     }
 
     @Override
+    public boolean onTouchEvent(MotionEvent evt) {
+        if (MotionEvent.ACTION_DOWN == evt.getActionMasked()) {
+            mUserInitiated = true;
+        } else if (MotionEvent.ACTION_UP == evt.getActionMasked()
+                || (MotionEvent.ACTION_CANCEL == evt.getActionMasked())) {
+            mUserInitiated = false;
+        }
+        return super.onTouchEvent(evt);
+    }
+
+    @Override
     public void stopScroll() {
         mIsCancelled = true;
         super.stopScroll();
@@ -111,7 +124,7 @@
     // callback for scroll events
 
     interface ScrollListener {
-        public void onScroll(int visibleTitleHeight);
+        public void onScroll(int visibleTitleHeight, boolean userInitiated);
     }
 
     @Override