am e274607c: am cae51694: Merge "Ensure that SwipeDismissBehavior affects the correct view" into mnc-ub-dev

* commit 'e274607cdee3deb8f2f15a6bbdaf6051dd6fa6bc':
  Ensure that SwipeDismissBehavior affects the correct view

GitOrigin-RevId=9d6eb9beafef317f0f1bc5596ab47114c161f41a

PiperOrigin-RevId: 140551102

api/current.txt

@@ -311,6 +311,7 @@ package android.support.design.widget {
 
   public class SwipeDismissBehavior extends android.support.design.widget.CoordinatorLayout.Behavior {
     ctor public SwipeDismissBehavior();
+    method public boolean canSwipeDismissView(android.view.View);
     method public int getDragState();
     method public void setDragDismissDistance(float);
     method public void setEndAlphaSwipeDistance(float);

src/android/support/design/widget/Snackbar.java

@@ -811,6 +811,11 @@ public final class Snackbar {
     }
 
     final class Behavior extends SwipeDismissBehavior<SnackbarLayout> {
+        @Override
+        public boolean canSwipeDismissView(View child) {
+            return child instanceof SnackbarLayout;
+        }
+
         @Override
         public boolean onInterceptTouchEvent(CoordinatorLayout parent, SnackbarLayout child,
                 MotionEvent event) {

src/android/support/design/widget/SwipeDismissBehavior.java

@@ -17,6 +17,7 @@
 package android.support.design.widget;
 
 import android.support.annotation.IntDef;
+import android.support.annotation.NonNull;
 import android.support.v4.view.MotionEventCompat;
 import android.support.v4.view.ViewCompat;
 import android.support.v4.widget.ViewDragHelper;
@@ -198,13 +199,27 @@ public class SwipeDismissBehavior<V extends View> extends CoordinatorLayout.Beha
         return false;
     }
 
+    /**
+     * Called when the user's input indicates that they want to swipe the given view.
+     *
+     * @param view View the user is attempting to swipe
+     * @return true if the view can be dismissed via swiping, false otherwise
+     */
+    public boolean canSwipeDismissView(@NonNull View view) {
+        return true;
+    }
+
     private final ViewDragHelper.Callback mDragCallback = new ViewDragHelper.Callback() {
         private int mOriginalCapturedViewLeft;
 
         @Override
         public boolean tryCaptureView(View child, int pointerId) {
-            mOriginalCapturedViewLeft = child.getLeft();
-            return true;
+            return canSwipeDismissView(child);
+        }
+
+        @Override
+        public void onViewCaptured(View capturedChild, int activePointerId) {
+            mOriginalCapturedViewLeft = capturedChild.getLeft();
         }
 
         @Override