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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package androidx.work.impl.constraints.controllers;
     17 
     18 import android.content.Context;
     19 import android.support.annotation.NonNull;
     20 
     21 import androidx.work.impl.constraints.trackers.Trackers;
     22 import androidx.work.impl.model.WorkSpec;
     23 
     24 /**
     25  * A {@link ConstraintController} for storage not low events.
     26  */
     27 
     28 public class StorageNotLowController extends ConstraintController<Boolean> {
     29     public StorageNotLowController(Context context, OnConstraintUpdatedCallback callback) {
     30         super(Trackers.getInstance(context).getStorageNotLowTracker(), callback);
     31     }
     32 
     33     @Override
     34     boolean hasConstraint(@NonNull WorkSpec workSpec) {
     35         return workSpec.constraints.requiresStorageNotLow();
     36     }
     37 
     38     @Override
     39     boolean isConstrained(@NonNull Boolean isStorageNotLow) {
     40         return !isStorageNotLow;
     41     }
     42 }
     43