Don't restore device specific preferences

There are two categories of preferences:
1. That are part of the default shared preference
   They were all getting backed up and restored.
   Added a blacklist to not restore some of these.
   e.g. current account

2. That are in a non-default shared preference file.
   These are not getting backed up currently, but added a specific
   local preference file for all such preferences.

Bug: 17288591
Change-Id: I2f748be971a2337543e5014434aa39313fd1e1d8

1 files changed, 41 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/latin/settings/LocalSettingsConstants.java b/java/src/com/android/inputmethod/latin/settings/LocalSettingsConstants.java
new file mode 100644
index 000000000..71d6065e0
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/settings/LocalSettingsConstants.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 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.settings;
+
+/**
+ * Collection of device specific preference constants.
+ */
+public class LocalSettingsConstants {
+    // Preference file for storing preferences that are tied to a device
+    // and are not backed up.
+    public static final String PREFS_FILE = "local_prefs";
+
+    // Preference key for the current account.
+    // Do not restore.
+    public static final String PREF_ACCOUNT_NAME = "pref_account_name";
+
+    // List of preference keys to skip from being restored by backup agent.
+    // These preferences are tied to a device and hence should not be restored.
+    // e.g. account name.
+    // Ideally they could have been kept in a separate file that wasn't backed up
+    // however the preference UI currently only deals with the default
+    // shared preferences which makes it non-trivial to move these out to
+    // a different shared preferences file.
+    public static final String[] PREFS_TO_SKIP_RESTORING = new String[] {
+        PREF_ACCOUNT_NAME
+    };
+}