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/*
* 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();
}
}
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