Add a re-parent function to re-parent a specific child.

This is similar to reparentChildren, but the reparentChild will
only re-parent a specific child to the new parent and not all
children.

Test: Added test in Transaction_test for reparentChild.

Change-Id: I4275e0d5f1d5601b489956753c78a56d1a5d4c1c

1 files changed, 7 insertions, 0 deletions

diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp
index 58bd273de6..b9c5ef9580 100644
--- a/libs/gui/SurfaceControl.cpp
+++ b/libs/gui/SurfaceControl.cpp
@@ -191,6 +191,13 @@ status_t SurfaceControl::reparentChildren(const sp<IBinder>& newParentHandle) {
     return mClient->reparentChildren(mHandle, newParentHandle);
 }
 
+status_t SurfaceControl::reparentChild(const sp<IBinder>& newParentHandle,
+        const sp<IBinder>& childHandle) {
+    status_t err = validate();
+    if (err < 0) return err;
+    return mClient->reparentChild(mHandle, newParentHandle, childHandle);
+}
+
 status_t SurfaceControl::detachChildren() {
     status_t err = validate();
     if (err < 0) return err;