Added the overscrolling bounce/weight as a preference

Change-Id: I544bc4216304d059b84e96fcafbbf849d6737324

1 files changed, 20 insertions, 2 deletions

diff --git a/core/java/android/widget/AbsListView.java b/core/java/android/widget/AbsListView.java
index 6e224e5..29d3be3 100644
--- a/core/java/android/widget/AbsListView.java
+++ b/core/java/android/widget/AbsListView.java
@@ -51,6 +51,8 @@ import android.view.inputmethod.InputConnection;
 import android.view.inputmethod.InputConnectionWrapper;
 import android.view.inputmethod.InputMethodManager;
 
+import android.provider.Settings;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -1172,7 +1174,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
         layoutChildren();
         mInLayout = false;
         
-        mOverscrollMax = (b - t) / OVERSCROLL_LIMIT_DIVISOR;
+        mOverscrollMax = (b - t) / getOverscrollWeight();
     }
 
     /**
@@ -1294,6 +1296,22 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
     }
 
     /**
+     * Returns the overscroll weight for this view
+     *
+     * @return This view's overscroll weight.
+     */
+    public int getOverscrollWeight() {
+        int weight = Settings.System.getInt(mContext.getContentResolver(),
+            Settings.System.OVERSCROLL_WEIGHT, 0);
+
+        if (weight == 0) {
+            return OVERSCROLL_LIMIT_DIVISOR;
+        } else {
+            return weight;
+        }
+    }
+
+    /**
      * Get a view and have it show the data associated with the specified
      * position. This is called when we have already discovered that the view is
      * not available for reuse in the recycle bin. The only choices left are
@@ -2407,7 +2425,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
         final int childCount = getChildCount();
         if (childCount > 0) {
             return Math.min(mOverscrollMax,
-                    getChildAt(childCount - 1).getBottom() / OVERSCROLL_LIMIT_DIVISOR);
+                    getChildAt(childCount - 1).getBottom() / getOverscrollWeight());
         } else {
             return mOverscrollMax;
         }