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.content.Context;
  import android.os.Process;
  import android.os.UserHandle;
  
  import com.android.launcher3.compat.UserManagerCompat;
  
  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) {
          Preconditions.assertNotNull(componentName);
          Preconditions.assertNotNull(user);
          this.componentName = componentName;
          this.user = user;
          mHashCode = Arrays.hashCode(new Object[] {componentName, user});
  
      }
  
      /**
       * Creates a new component key from an encoded component key string in the form of
       * [flattenedComponentString#userId].  If the userId is not present, then it defaults
       * to the current user.
       */
      public ComponentKey(Context context, String componentKeyStr) {
          int userDelimiterIndex = componentKeyStr.indexOf("#");
          if (userDelimiterIndex != -1) {
              String componentStr = componentKeyStr.substring(0, userDelimiterIndex);
              Long componentUser = Long.valueOf(componentKeyStr.substring(userDelimiterIndex + 1));
              componentName = ComponentName.unflattenFromString(componentStr);
              user = UserManagerCompat.getInstance(context)
                      .getUserForSerialNumber(componentUser.longValue());
          } else {
              // No user provided, default to the current user
              componentName = ComponentName.unflattenFromString(componentKeyStr);
              user = Process.myUserHandle();
          }
          Preconditions.assertNotNull(componentName);
          Preconditions.assertNotNull(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.toString().replaceAll("\\D+","");
      }
  }