content: package com.android.launcher3.util;
  
  /**
   * Copyright (C) 2015 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.content.ComponentName;
  import android.os.UserHandle;
  
  import java.util.Arrays;
  
  public class ComponentKey {
  
      public final ComponentName componentName;
      public final UserHandle user;
  
      private final int mHashCode;
  
      public ComponentKey(ComponentName componentName, UserHandle user) {
          if (componentName == null || user == null) {
              throw new NullPointerException();
          }
          this.componentName = componentName;
          this.user = user;
          mHashCode = Arrays.hashCode(new Object[] {componentName, user});
  
      }
  
      @Override
      public int hashCode() {
          return mHashCode;
      }
  
      @Override
      public boolean equals(Object o) {
          ComponentKey other = (ComponentKey) o;
          return other.componentName.equals(componentName) && other.user.equals(user);
      }
  
      /**
       * Encodes a component key as a string of the form [flattenedComponentString#userId].
       */
      @Override
      public String toString() {
          return componentName.flattenToString() + "#" + user;
      }
  }