1 files changed, 59 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/util/UpdateHelper.java b/src/com/android/gallery3d/util/UpdateHelper.java
new file mode 100644
index 000000000..f76705d06
--- /dev/null
+++ b/src/com/android/gallery3d/util/UpdateHelper.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2010 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.gallery3d.util;
+
+import com.android.gallery3d.common.Utils;
+
+public class UpdateHelper {
+
+    private boolean mUpdated = false;
+
+    public int update(int original, int update) {
+        if (original != update) {
+            mUpdated = true;
+            original = update;
+        }
+        return original;
+    }
+
+    public long update(long original, long update) {
+        if (original != update) {
+            mUpdated = true;
+            original = update;
+        }
+        return original;
+    }
+
+    public double update(double original, double update) {
+        if (original != update) {
+            mUpdated = true;
+            original = update;
+        }
+        return original;
+    }
+
+    public <T> T update(T original, T update) {
+        if (!Utils.equals(original, update)) {
+            mUpdated = true;
+            original = update;
+        }
+        return original;
+    }
+
+    public boolean isUpdated() {
+        return mUpdated;
+    }
+}