Avoid memory leak by by non-static Handler inner classes

bug: 4901934
Change-Id: I870ab2e621ef3640a84468f09c074cdd726dc963

1 files changed, 42 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/StaticInnerHandlerWrapper.java b/java/src/com/android/inputmethod/latin/StaticInnerHandlerWrapper.java
new file mode 100644
index 000000000..89d9ea844
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/StaticInnerHandlerWrapper.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.latin;
+
+import android.os.Handler;
+import android.os.Looper;
+
+import java.lang.ref.WeakReference;
+
+public class StaticInnerHandlerWrapper<T> extends Handler {
+    final private WeakReference<T> mOuterInstanceRef;
+
+    public StaticInnerHandlerWrapper(T outerInstance) {
+        super();
+        if (outerInstance == null) throw new NullPointerException("outerInstance is null");
+        mOuterInstanceRef = new WeakReference<T>(outerInstance);
+    }
+
+    public StaticInnerHandlerWrapper(T outerInstance, Looper looper) {
+        super(looper);
+        if (outerInstance == null) throw new NullPointerException("outerInstance is null");
+        mOuterInstanceRef = new WeakReference<T>(outerInstance);
+    }
+
+    public T getOuterInstance() {
+        return mOuterInstanceRef.get();
+    }
+}