1 /*
2  * Copyright (C) 2012 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.settings.users;
18 
19 import com.android.settings.R;
20 
21 import android.content.Context;
22 import android.os.UserHandle;
23 import android.os.UserManager;
24 import android.preference.Preference;
25 import android.util.AttributeSet;
26 import android.view.View;
27 import android.view.View.OnClickListener;
28 
29 public class UserPreference extends Preference {
30 
31     public static final int USERID_UNKNOWN = -10;
32     public static final int USERID_GUEST_DEFAULTS = -11;
33 
34     private OnClickListener mDeleteClickListener;
35     private OnClickListener mSettingsClickListener;
36     private int mSerialNumber = -1;
37     private int mUserId = USERID_UNKNOWN;
38     static final int SETTINGS_ID = R.id.manage_user;
39     static final int DELETE_ID = R.id.trash_user;
40 
UserPreference(Context context, AttributeSet attrs)41     public UserPreference(Context context, AttributeSet attrs) {
42         this(context, attrs, USERID_UNKNOWN, null, null);
43     }
44 
UserPreference(Context context, AttributeSet attrs, int userId, OnClickListener settingsListener, OnClickListener deleteListener)45     UserPreference(Context context, AttributeSet attrs, int userId,
46             OnClickListener settingsListener,
47             OnClickListener deleteListener) {
48         super(context, attrs);
49         if (deleteListener != null || settingsListener != null) {
50             setWidgetLayoutResource(R.layout.preference_user_delete_widget);
51         }
52         mDeleteClickListener = deleteListener;
53         mSettingsClickListener = settingsListener;
54         mUserId = userId;
55     }
56 
57     @Override
onBindView(View view)58     protected void onBindView(View view) {
59         UserManager um = (UserManager) getContext().getSystemService(Context.USER_SERVICE);
60         View deleteDividerView = view.findViewById(R.id.divider_delete);
61         View manageDividerView = view.findViewById(R.id.divider_manage);
62         View deleteView = view.findViewById(R.id.trash_user);
63         if (deleteView != null) {
64             if (mDeleteClickListener != null
65                     && !um.hasUserRestriction(UserManager.DISALLOW_REMOVE_USER)) {
66                 deleteView.setOnClickListener(mDeleteClickListener);
67                 deleteView.setTag(this);
68             } else {
69                 deleteView.setVisibility(View.GONE);
70                 deleteDividerView.setVisibility(View.GONE);
71             }
72         }
73         View manageView = view.findViewById(R.id.manage_user);
74         if (manageView != null) {
75             if (mSettingsClickListener != null) {
76                 manageView.setOnClickListener(mSettingsClickListener);
77                 manageView.setTag(this);
78                 if (mDeleteClickListener != null) {
79                     manageDividerView.setVisibility(View.GONE);
80                 }
81             } else {
82                 manageView.setVisibility(View.GONE);
83                 manageDividerView.setVisibility(View.GONE);
84             }
85         }
86         super.onBindView(view);
87     }
88 
getSerialNumber()89     private int getSerialNumber() {
90         if (mUserId == UserHandle.myUserId()) return Integer.MIN_VALUE;
91         if (mSerialNumber < 0) {
92             // If the userId is unknown
93             if (mUserId == USERID_UNKNOWN) {
94                 return Integer.MAX_VALUE;
95             } else if (mUserId == USERID_GUEST_DEFAULTS) {
96                 return Integer.MAX_VALUE - 1;
97             }
98             mSerialNumber = ((UserManager) getContext().getSystemService(Context.USER_SERVICE))
99                     .getUserSerialNumber(mUserId);
100             if (mSerialNumber < 0) return mUserId;
101         }
102         return mSerialNumber;
103     }
104 
getUserId()105     public int getUserId() {
106         return mUserId;
107     }
108 
compareTo(Preference another)109     public int compareTo(Preference another) {
110         if (another instanceof UserPreference) {
111             return getSerialNumber() > ((UserPreference) another).getSerialNumber() ? 1 : -1;
112         } else {
113             return 1;
114         }
115     }
116 }
117