1 /*
2  * Copyright (C) 2015 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
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.tools.layoutlib.java;
18 
19 import com.android.tools.layoutlib.create.ReplaceMethodCallsAdapter;
20 
21 import java.util.Iterator;
22 import java.util.LinkedHashMap;
23 import java.util.Map;
24 import java.util.Map.Entry;
25 
26 /**
27  * Provides alternate implementation to java.util.LinkedHashMap#eldest(), which is present as a
28  * non-public method in the Android VM, but not present on the host VM. This is injected in the
29  * layoutlib using {@link ReplaceMethodCallsAdapter}.
30  */
31 public class LinkedHashMap_Delegate {
eldest(LinkedHashMap<K,V> map)32     public static <K,V> Map.Entry<K,V> eldest(LinkedHashMap<K,V> map) {
33         Iterator<Entry<K, V>> iterator = map.entrySet().iterator();
34         return iterator.hasNext() ? iterator.next() : null;
35     }
36 }
37