commit 2e05ec3235150a93a3459cd260be45f02dadbe84
author Jeff Brown <jeffbrown@google.com> Mon Sep 30 15:57:43 2013 -0700
committer Jeff Brown <jeffbrown@google.com> Mon Sep 30 15:57:43 2013 -0700
tree b0bfe66c5b570dc153c690307cb2781d77990d3a
parent 8b3bc51c8f03b2877e834fb1a739eb729a7ad8a1

Reset insets when inset computer is removed.

When an inset computer is registered with the view tree observer,
we report content insets to the window manager.  When an inset computer
is subsequently unregistered, we must take care to clear these insets.

This patch remembers whether the previously computed insets were
non-empty so that it can force insets to be reset when needed.

Bug: 10840662
Change-Id: I4cce5ba64cc5234b98363b025ac4bb42e64349f1

core/java/android/view/ViewTreeObserver.java

diff --git a/core/java/android/view/ViewTreeObserver.java b/core/java/android/view/ViewTreeObserver.java
index f9298ea..a9444b4 100644
--- a/core/java/android/view/ViewTreeObserver.java
+++ b/core/java/android/view/ViewTreeObserver.java
@@ -241,6 +241,13 @@
             mTouchableInsets = TOUCHABLE_INSETS_FRAME;
         }
 
+        boolean isEmpty() {
+            return contentInsets.isEmpty()
+                    && visibleInsets.isEmpty()
+                    && touchableRegion.isEmpty()
+                    && mTouchableInsets == TOUCHABLE_INSETS_FRAME;
+        }
+
         @Override
         public int hashCode() {
             int result = contentInsets.hashCode();