1 package com.android.launcher3.util;
2 
3 /**
4  * Copyright (C) 2015 The Android Open Source Project
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  *      http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18 
19 import android.content.ComponentName;
20 import android.os.UserHandle;
21 
22 import java.util.Arrays;
23 
24 public class ComponentKey {
25 
26     public final ComponentName componentName;
27     public final UserHandle user;
28 
29     private final int mHashCode;
30 
ComponentKey(ComponentName componentName, UserHandle user)31     public ComponentKey(ComponentName componentName, UserHandle user) {
32         if (componentName == null || user == null) {
33             throw new NullPointerException();
34         }
35         this.componentName = componentName;
36         this.user = user;
37         mHashCode = Arrays.hashCode(new Object[] {componentName, user});
38 
39     }
40 
41     @Override
hashCode()42     public int hashCode() {
43         return mHashCode;
44     }
45 
46     @Override
equals(Object o)47     public boolean equals(Object o) {
48         ComponentKey other = (ComponentKey) o;
49         return other.componentName.equals(componentName) && other.user.equals(user);
50     }
51 
52     /**
53      * Encodes a component key as a string of the form [flattenedComponentString#userId].
54      */
55     @Override
toString()56     public String toString() {
57         return componentName.flattenToString() + "#" + user;
58     }
59 }