1/*
2 * Copyright (C) 2017 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 */
16package com.android.settings.security;
17
18import android.app.Fragment;
19import android.content.Context;
20import android.os.UserHandle;
21import android.support.annotation.VisibleForTesting;
22import android.support.v7.preference.Preference;
23import android.support.v7.preference.Preference.OnPreferenceClickListener;
24import android.support.v7.preference.PreferenceScreen;
25import com.android.internal.widget.LockPatternUtils;
26import com.android.settings.OwnerInfoSettings;
27import com.android.settings.core.PreferenceController;
28import com.android.settings.core.lifecycle.Lifecycle;
29import com.android.settings.core.lifecycle.LifecycleObserver;
30import com.android.settings.core.lifecycle.events.OnResume;
31import com.android.settingslib.RestrictedLockUtils;
32import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
33import com.android.settingslib.RestrictedPreference;
34
35public class OwnerInfoPreferenceController extends PreferenceController
36        implements LifecycleObserver, OnResume {
37
38    private static final String KEY_OWNER_INFO = "owner_info_settings";
39    private static final int MY_USER_ID = UserHandle.myUserId();
40
41    private final LockPatternUtils mLockPatternUtils;
42    private final Fragment mParent;
43    private RestrictedPreference mOwnerInfoPref;
44
45    // Container fragment should implement this in order to show the correct summary
46    public interface OwnerInfoCallback {
47        public void onOwnerInfoUpdated();
48    }
49
50    public OwnerInfoPreferenceController(Context context, Fragment parent, Lifecycle lifecycle ) {
51        super(context);
52        mParent = parent;
53        mLockPatternUtils = new LockPatternUtils(context);
54        if (lifecycle != null) {
55            lifecycle.addObserver(this);
56        }
57    }
58
59    @Override
60    public void displayPreference(PreferenceScreen screen) {
61        mOwnerInfoPref  = (RestrictedPreference) screen.findPreference(KEY_OWNER_INFO);
62    }
63
64    @Override
65    public void onResume() {
66        updateEnableState();
67        updateSummary();
68    }
69
70    @Override
71    public boolean isAvailable() {
72        return true;
73    }
74
75    @Override
76    public String getPreferenceKey() {
77        return KEY_OWNER_INFO;
78    }
79
80    public void updateEnableState() {
81        if (mOwnerInfoPref == null) {
82            return;
83        }
84        if (isDeviceOwnerInfoEnabled()) {
85            EnforcedAdmin admin = getDeviceOwner();
86            mOwnerInfoPref.setDisabledByAdmin(admin);
87        } else {
88            mOwnerInfoPref.setDisabledByAdmin(null);
89            mOwnerInfoPref.setEnabled(!mLockPatternUtils.isLockScreenDisabled(MY_USER_ID));
90            if (mOwnerInfoPref.isEnabled()) {
91                mOwnerInfoPref.setOnPreferenceClickListener(
92                    new OnPreferenceClickListener() {
93                        @Override
94                        public boolean onPreferenceClick(Preference preference) {
95                            OwnerInfoSettings.show(mParent);
96                            return true;
97                        }
98                    });
99            }
100        }
101    }
102
103    public void updateSummary() {
104        if (mOwnerInfoPref != null) {
105            if (isDeviceOwnerInfoEnabled()) {
106                mOwnerInfoPref.setSummary(
107                    getDeviceOwnerInfo());
108            } else {
109                mOwnerInfoPref.setSummary(isOwnerInfoEnabled()
110                    ? getOwnerInfo()
111                    : mContext.getString(
112                        com.android.settings.R.string.owner_info_settings_summary));
113            }
114        }
115    }
116
117    // Wrapper methods to allow testing
118    @VisibleForTesting
119    boolean isDeviceOwnerInfoEnabled() {
120        return mLockPatternUtils.isDeviceOwnerInfoEnabled();
121    }
122
123    @VisibleForTesting
124    String getDeviceOwnerInfo() {
125        return mLockPatternUtils.getDeviceOwnerInfo();
126    }
127
128    @VisibleForTesting
129    boolean isOwnerInfoEnabled() {
130        return mLockPatternUtils.isOwnerInfoEnabled(MY_USER_ID);
131    }
132
133    @VisibleForTesting
134    String getOwnerInfo() {
135        return mLockPatternUtils.getOwnerInfo(MY_USER_ID);
136    }
137
138    @VisibleForTesting
139    EnforcedAdmin getDeviceOwner() {
140        return RestrictedLockUtils.getDeviceOwner(mContext);
141    }
142}
143