content: /*
   * Copyright (C) 2012 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.layoutlib.bridge.util;
  
  import com.android.resources.ResourceType;
  import com.android.util.Pair;
  
  import android.annotation.NonNull;
  import android.util.SparseArray;
  
  import java.util.HashMap;
  import java.util.Map;
  
  public class DynamicIdMap {
  
      private final Map<Pair<ResourceType, String>, Integer> mDynamicIds = new HashMap<>();
      private final SparseArray<Pair<ResourceType, String>> mRevDynamicIds = new SparseArray<>();
      private int mDynamicSeed;
  
      public DynamicIdMap(int seed) {
          mDynamicSeed = seed;
      }
  
      public void reset(int seed) {
          mDynamicIds.clear();
          mRevDynamicIds.clear();
          mDynamicSeed = seed;
      }
  
      /**
       * Returns a dynamic integer for the given resource type/name, creating it if it doesn't
       * already exist.
       *
       * @param type the type of the resource
       * @param name the name of the resource
       * @return an integer.
       */
      @NonNull
      public Integer getId(ResourceType type, String name) {
          return getId(Pair.of(type, name));
      }
  
      /**
       * Returns a dynamic integer for the given resource type/name, creating it if it doesn't
       * already exist.
       *
       * @param resource the type/name of the resource
       * @return an integer.
       */
      @NonNull
      public Integer getId(Pair<ResourceType, String> resource) {
          Integer value = mDynamicIds.get(resource);
          if (value == null) {
              value = ++mDynamicSeed;
              mDynamicIds.put(resource, value);
              mRevDynamicIds.put(value, resource);
          }
  
          return value;
      }
  
      public Pair<ResourceType, String> resolveId(int id) {
          return mRevDynamicIds.get(id);
      }
  }
  