| /* |
| * Copyright (C) 2013 Google Inc. |
| * Licensed to 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.mail.ui; |
| |
| import android.app.Fragment; |
| |
| import com.android.mail.utils.LogTag; |
| import com.android.mail.utils.LogUtils; |
| |
| /** |
| * Small Runnable-like wrapper that first checks that the Fragment is in a good state before |
| * doing any work. Ideal for use with a {@link android.os.Handler}. |
| */ |
| public abstract class FragmentRunnable implements Runnable { |
| private static final String LOG_TAG = LogTag.getLogTag(); |
| |
| private final String mOpName; |
| private final Fragment mFragment; |
| |
| public FragmentRunnable(String opName, Fragment fragment) { |
| mOpName = opName; |
| mFragment = fragment; |
| } |
| |
| public abstract void go(); |
| |
| @Override |
| public void run() { |
| if (!mFragment.isAdded()) { |
| LogUtils.i(LOG_TAG, "Unable to run op='%s' b/c fragment is not attached: %s", |
| mOpName, mFragment); |
| return; |
| } |
| go(); |
| } |
| } |