Make MessageQueue and Looper final.

Applications already cannot subclass these classes because
their constructors are not visible.

Change-Id: Id979d86dd05f7bcc888fe4ea499ab9b95d3d5dde

3 files changed, 20 insertions, 20 deletions

diff --git a/api/current.txt b/api/current.txt
index 31acb354cfdf..3da60967cc94 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -16509,7 +16509,7 @@ package android.os {
     method public abstract android.os.IBinder asBinder();
   }
 
-  public class Looper {
+  public final class Looper {
     method public void dump(android.util.Printer, java.lang.String);
     method public static android.os.Looper getMainLooper();
     method public java.lang.Thread getThread();
@@ -16564,9 +16564,9 @@ package android.os {
     field public int what;
   }
 
-  public class MessageQueue {
-    method public final void addIdleHandler(android.os.MessageQueue.IdleHandler);
-    method public final void removeIdleHandler(android.os.MessageQueue.IdleHandler);
+  public final class MessageQueue {
+    method public void addIdleHandler(android.os.MessageQueue.IdleHandler);
+    method public void removeIdleHandler(android.os.MessageQueue.IdleHandler);
   }
 
   public static abstract interface MessageQueue.IdleHandler {
diff --git a/core/java/android/os/Looper.java b/core/java/android/os/Looper.java
index 02135bc18e9d..38f4d5e54f13 100644
--- a/core/java/android/os/Looper.java
+++ b/core/java/android/os/Looper.java
@@ -50,7 +50,7 @@ import android.util.PrefixPrinter;
   *      }
   *  }</pre>
   */
-public class Looper {
+public final class Looper {
     private static final String TAG = "Looper";
 
     // sThreadLocal.get() will return null unless you've called prepare().
@@ -223,7 +223,7 @@ public class Looper {
      *
      * @hide
      */
-    public final int postSyncBarrier() {
+    public int postSyncBarrier() {
         return mQueue.enqueueSyncBarrier(SystemClock.uptimeMillis());
     }
 
@@ -238,7 +238,7 @@ public class Looper {
      *
      * @hide
      */
-    public final void removeSyncBarrier(int token) {
+    public void removeSyncBarrier(int token) {
         mQueue.removeSyncBarrier(token);
     }
 
diff --git a/core/java/android/os/MessageQueue.java b/core/java/android/os/MessageQueue.java
index 222578a95513..e0d40c96aafa 100644
--- a/core/java/android/os/MessageQueue.java
+++ b/core/java/android/os/MessageQueue.java
@@ -29,7 +29,7 @@ import java.util.ArrayList;
  * <p>You can retrieve the MessageQueue for the current thread with
  * {@link Looper#myQueue() Looper.myQueue()}.
  */
-public class MessageQueue {
+public final class MessageQueue {
     // True if the message queue can be quit.
     private final boolean mQuitAllowed;
 
@@ -78,7 +78,7 @@ public class MessageQueue {
      * 
      * @param handler The IdleHandler to be added.
      */
-    public final void addIdleHandler(IdleHandler handler) {
+    public void addIdleHandler(IdleHandler handler) {
         if (handler == null) {
             throw new NullPointerException("Can't add a null IdleHandler");
         }
@@ -94,7 +94,7 @@ public class MessageQueue {
      * 
      * @param handler The IdleHandler to be removed.
      */
-    public final void removeIdleHandler(IdleHandler handler) {
+    public void removeIdleHandler(IdleHandler handler) {
         synchronized (this) {
             mIdleHandlers.remove(handler);
         }
@@ -121,7 +121,7 @@ public class MessageQueue {
         }
     }
 
-    final Message next() {
+    Message next() {
         int pendingIdleHandlerCount = -1; // -1 only during first iteration
         int nextPollTimeoutMillis = 0;
 
@@ -218,7 +218,7 @@ public class MessageQueue {
         }
     }
 
-    final void quit() {
+    void quit() {
         if (!mQuitAllowed) {
             throw new RuntimeException("Main thread not allowed to quit.");
         }
@@ -232,7 +232,7 @@ public class MessageQueue {
         nativeWake(mPtr);
     }
 
-    final int enqueueSyncBarrier(long when) {
+    int enqueueSyncBarrier(long when) {
         // Enqueue a new sync barrier token.
         // We don't need to wake the queue because the purpose of a barrier is to stall it.
         synchronized (this) {
@@ -259,7 +259,7 @@ public class MessageQueue {
         }
     }
 
-    final void removeSyncBarrier(int token) {
+    void removeSyncBarrier(int token) {
         // Remove a sync barrier token from the queue.
         // If the queue is no longer stalled by a barrier then wake it.
         final boolean needWake;
@@ -288,7 +288,7 @@ public class MessageQueue {
         }
     }
 
-    final boolean enqueueMessage(Message msg, long when) {
+    boolean enqueueMessage(Message msg, long when) {
         if (msg.isInUse()) {
             throw new AndroidRuntimeException(msg + " This message is already in use.");
         }
@@ -338,7 +338,7 @@ public class MessageQueue {
         return true;
     }
 
-    final boolean hasMessages(Handler h, int what, Object object) {
+    boolean hasMessages(Handler h, int what, Object object) {
         if (h == null) {
             return false;
         }
@@ -355,7 +355,7 @@ public class MessageQueue {
         }
     }
 
-    final boolean hasMessages(Handler h, Runnable r, Object object) {
+    boolean hasMessages(Handler h, Runnable r, Object object) {
         if (h == null) {
             return false;
         }
@@ -372,7 +372,7 @@ public class MessageQueue {
         }
     }
 
-    final void removeMessages(Handler h, int what, Object object) {
+    void removeMessages(Handler h, int what, Object object) {
         if (h == null) {
             return;
         }
@@ -406,7 +406,7 @@ public class MessageQueue {
         }
     }
 
-    final void removeMessages(Handler h, Runnable r, Object object) {
+    void removeMessages(Handler h, Runnable r, Object object) {
         if (h == null || r == null) {
             return;
         }
@@ -440,7 +440,7 @@ public class MessageQueue {
         }
     }
 
-    final void removeCallbacksAndMessages(Handler h, Object object) {
+    void removeCallbacksAndMessages(Handler h, Object object) {
         if (h == null) {
             return;
         }