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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Eclipse Public License, Version 1.0 (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.eclipse.org/org/documents/epl-v10.php
      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 
     17 package com.android.ide.eclipse.adt.internal.resources.manager;
     18 
     19 import com.android.resources.ResourceType;
     20 import com.android.util.Pair;
     21 import com.android.utils.SparseArray;
     22 
     23 import java.util.HashMap;
     24 import java.util.Map;
     25 
     26 public class DynamicIdMap {
     27 
     28     private final Map<Pair<ResourceType, String>, Integer> mDynamicIds = new HashMap<Pair<ResourceType, String>, Integer>();
     29     private final SparseArray<Pair<ResourceType, String>> mRevDynamicIds = new SparseArray<Pair<ResourceType, String>>();
     30     private int mDynamicSeed;
     31 
     32     public DynamicIdMap(int seed) {
     33         mDynamicSeed = seed;
     34     }
     35 
     36     public void reset(int seed) {
     37         mDynamicIds.clear();
     38         mRevDynamicIds.clear();
     39         mDynamicSeed = seed;
     40     }
     41 
     42     /**
     43      * Returns a dynamic integer for the given resource type/name, creating it if it doesn't
     44      * already exist.
     45      *
     46      * @param type the type of the resource
     47      * @param name the name of the resource
     48      * @return an integer.
     49      */
     50     public Integer getId(ResourceType type, String name) {
     51         return getId(Pair.of(type, name));
     52     }
     53 
     54     /**
     55      * Returns a dynamic integer for the given resource type/name, creating it if it doesn't
     56      * already exist.
     57      *
     58      * @param resource the type/name of the resource
     59      * @return an integer.
     60      */
     61     public Integer getId(Pair<ResourceType, String> resource) {
     62         Integer value = mDynamicIds.get(resource);
     63         if (value == null) {
     64             value = Integer.valueOf(++mDynamicSeed);
     65             mDynamicIds.put(resource, value);
     66             mRevDynamicIds.put(value, resource);
     67         }
     68 
     69         return value;
     70     }
     71 
     72     public Pair<ResourceType, String> resolveId(int id) {
     73         return mRevDynamicIds.get(id);
     74     }
     75 }
     76