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/*
* ConnectBot: simple, powerful, open-source SSH client for Android
* Copyright 2010 Kenny Root, Jeffrey Sharkey
*
* 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.connectbot.service;
import org.connectbot.util.PreferenceConstants;
import android.annotation.TargetApi;
import android.app.backup.BackupManager;
import android.content.Context;
/**
* This is only invoked on Froyo and beyond.
*/
@TargetApi(8)
public abstract class BackupWrapper {
public static BackupWrapper getInstance() {
if (PreferenceConstants.PRE_FROYO)
return PreFroyo.Holder.sInstance;
else
return FroyoAndBeyond.Holder.sInstance;
}
public abstract void onDataChanged(Context context);
private static class PreFroyo extends BackupWrapper {
private static class Holder {
private static final PreFroyo sInstance = new PreFroyo();
}
@Override
public void onDataChanged(Context context) {
// do nothing for now
}
}
private static class FroyoAndBeyond extends BackupWrapper {
private static class Holder {
private static final FroyoAndBeyond sInstance = new FroyoAndBeyond();
}
private static BackupManager mBackupManager;
@Override
public void onDataChanged(Context context) {
checkBackupManager(context);
if (mBackupManager != null) {
mBackupManager.dataChanged();
}
}
private void checkBackupManager(Context context) {
if (mBackupManager == null) {
mBackupManager = new BackupManager(context);
}
}
}
}
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