commit 3661bfac0b810132c44df6c910f5374e76213004
author Sunny Goyal <sunnygoyal@google.com> Thu Mar 01 16:29:15 2018 -0800
committer Sunny Goyal <sunnygoyal@google.com> Tue Mar 06 11:41:43 2018 -0800
tree 85c13e8730794f1436f743b10809b9da331e8780
parent 46d259d9fb7b918ee5fee773ee615dd9111aa89f

Fixing fast scroller touch handling in all-apps and widget sheet
Also removing scrim view, instead drawing the scrim manually

Bug: 73085356
Change-Id: I188c6c9b1685e22d5d97b38dd5d3e960b655c9ba

src/com/android/launcher3/BaseRecyclerView.java

diff --git a/src/com/android/launcher3/BaseRecyclerView.java b/src/com/android/launcher3/BaseRecyclerView.java
index cc13263..74b9cfa 100644
--- a/src/com/android/launcher3/BaseRecyclerView.java
+++ b/src/com/android/launcher3/BaseRecyclerView.java
@@ -33,8 +33,7 @@
  *   <li> Enable fast scroller.
  * </ul>
  */
-public abstract class BaseRecyclerView extends RecyclerView
-        implements RecyclerView.OnItemTouchListener {
+public abstract class BaseRecyclerView extends RecyclerView  {
 
     protected RecyclerViewFastScroller mScrollbar;
 
@@ -51,12 +50,6 @@
     }
 
     @Override
-    protected void onFinishInflate() {
-        super.onFinishInflate();
-        addOnItemTouchListener(this);
-    }
-
-    @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
         bindFastScrollbar();
@@ -69,40 +62,8 @@
         onUpdateScrollbar(0);
     }
 
-    /**
-     * We intercept the touch handling only to support fast scrolling when initiated from the
-     * scroll bar.  Otherwise, we fall back to the default RecyclerView touch handling.
-     */
-    @Override
-    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent ev) {
-        return handleTouchEvent(ev);
-    }
-
-    @Override
-    public void onTouchEvent(RecyclerView rv, MotionEvent ev) {
-        handleTouchEvent(ev);
-    }
-
-    /**
-     * Handles the touch event and determines whether to show the fast scroller (or updates it if
-     * it is already showing).
-     */
-    private boolean handleTouchEvent(MotionEvent ev) {
-        // Move to mScrollbar's coordinate system.
-        // We need to take parent into account (view pager's location)
-        ViewGroup parent = (ViewGroup) getParent();
-        int left = parent.getLeft() - mScrollbar.getLeft();
-        int top = parent.getTop() + getTop() - mScrollbar.getTop() - getScrollBarTop();
-        ev.offsetLocation(left, top);
-        try {
-            return mScrollbar.handleTouchEvent(ev);
-        } finally {
-            ev.offsetLocation(-left, -top);
-        }
-    }
-
-    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
-        // DO NOT REMOVE, NEEDED IMPLEMENTATION FOR M BUILDS
+    public RecyclerViewFastScroller getScrollbar() {
+        return mScrollbar;
     }
 
     public int getScrollBarTop() {