1 files changed, 57 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/latin/BackupAgent.java b/java/src/org/kelar/inputmethod/latin/BackupAgent.java
new file mode 100644
index 000000000..267014683
--- /dev/null
+++ b/java/src/org/kelar/inputmethod/latin/BackupAgent.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2008 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 org.kelar.inputmethod.latin;
+
+import android.app.backup.BackupAgentHelper;
+import android.app.backup.BackupDataInput;
+import android.app.backup.SharedPreferencesBackupHelper;
+import android.content.SharedPreferences;
+import android.os.ParcelFileDescriptor;
+
+import org.kelar.inputmethod.latin.settings.LocalSettingsConstants;
+
+import java.io.IOException;
+
+/**
+ * Backup/restore agent for LatinIME.
+ * Currently it backs up the default shared preferences.
+ */
+public final class BackupAgent extends BackupAgentHelper {
+    private static final String PREF_SUFFIX = "_preferences";
+
+    @Override
+    public void onCreate() {
+        addHelper("shared_pref", new SharedPreferencesBackupHelper(this,
+                getPackageName() + PREF_SUFFIX));
+    }
+
+    @Override
+    public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState)
+            throws IOException {
+        // Let the restore operation go through
+        super.onRestore(data, appVersionCode, newState);
+
+        // Remove the preferences that we don't want restored.
+        final SharedPreferences.Editor prefEditor = getSharedPreferences(
+                getPackageName() + PREF_SUFFIX, MODE_PRIVATE).edit();
+        for (final String key : LocalSettingsConstants.PREFS_TO_SKIP_RESTORING) {
+            prefEditor.remove(key);
+        }
+        // Flush the changes to disk.
+        prefEditor.commit();
+    }
+}