content: package com.android.launcher3.util;
  
  /**
   * Copyright (C) 2017 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.
   */
  
  import android.support.annotation.Nullable;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  public class ComponentKeyMapper<T> {
  
      protected final ComponentKey mComponentKey;
  
      public ComponentKeyMapper(ComponentKey key) {
          this.mComponentKey = key;
      }
  
      public @Nullable T getItem(Map<ComponentKey, T> map) {
          return map.get(mComponentKey);
      }
  
      public String getPackage() {
          return mComponentKey.componentName.getPackageName();
      }
  
      public String getComponentClass() {
          return mComponentKey.componentName.getClassName();
      }
  
      @Override
      public String toString() {
          return mComponentKey.toString();
      }
  
  }
  