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.PreferenceControllerMixin;
28import com.android.settingslib.RestrictedLockUtils;
29import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
30import com.android.settingslib.RestrictedPreference;
31import com.android.settingslib.core.AbstractPreferenceController;
32import com.android.settingslib.core.lifecycle.Lifecycle;
33import com.android.settingslib.core.lifecycle.LifecycleObserver;
34import com.android.settingslib.core.lifecycle.events.OnResume;
35
36public class OwnerInfoPreferenceController extends AbstractPreferenceController
37        implements PreferenceControllerMixin, LifecycleObserver, OnResume {
38
39    private static final String KEY_OWNER_INFO = "owner_info_settings";
40    private static final int MY_USER_ID = UserHandle.myUserId();
41
42    private final LockPatternUtils mLockPatternUtils;
43    private final Fragment mParent;
44    private RestrictedPreference mOwnerInfoPref;
45
46    // Container fragment should implement this in order to show the correct summary
47    public interface OwnerInfoCallback {
48        public void onOwnerInfoUpdated();
49    }
50
51    public OwnerInfoPreferenceController(Context context, Fragment parent, Lifecycle lifecycle ) {
52        super(context);
53        mParent = parent;
54        mLockPatternUtils = new LockPatternUtils(context);
55        if (lifecycle != null) {
56            lifecycle.addObserver(this);
57        }
58    }
59
60    @Override
61    public void displayPreference(PreferenceScreen screen) {
62        mOwnerInfoPref  = (RestrictedPreference) screen.findPreference(KEY_OWNER_INFO);
63    }
64
65    @Override
66    public void onResume() {
67        updateEnableState();
68        updateSummary();
69    }
70
71    @Override
72    public boolean isAvailable() {
73        return true;
74    }
75
76    @Override
77    public String getPreferenceKey() {
78        return KEY_OWNER_INFO;
79    }
80
81    public void updateEnableState() {
82        if (mOwnerInfoPref == null) {
83            return;
84        }
85        if (isDeviceOwnerInfoEnabled()) {
86            EnforcedAdmin admin = getDeviceOwner();
87            mOwnerInfoPref.setDisabledByAdmin(admin);
88        } else {
89            mOwnerInfoPref.setDisabledByAdmin(null);
90            mOwnerInfoPref.setEnabled(!mLockPatternUtils.isLockScreenDisabled(MY_USER_ID));
91            if (mOwnerInfoPref.isEnabled()) {
92                mOwnerInfoPref.setOnPreferenceClickListener(
93                    new OnPreferenceClickListener() {
94                        @Override
95                        public boolean onPreferenceClick(Preference preference) {
96                            OwnerInfoSettings.show(mParent);
97                            return true;
98                        }
99                    });
100            }
101        }
102    }
103
104    public void updateSummary() {
105        if (mOwnerInfoPref != null) {
106            if (isDeviceOwnerInfoEnabled()) {
107                mOwnerInfoPref.setSummary(
108                    getDeviceOwnerInfo());
109            } else {
110                mOwnerInfoPref.setSummary(isOwnerInfoEnabled()
111                    ? getOwnerInfo()
112                    : mContext.getString(
113                        com.android.settings.R.string.owner_info_settings_summary));
114            }
115        }
116    }
117
118    // Wrapper methods to allow testing
119    @VisibleForTesting
120    boolean isDeviceOwnerInfoEnabled() {
121        return mLockPatternUtils.isDeviceOwnerInfoEnabled();
122    }
123
124    @VisibleForTesting
125    String getDeviceOwnerInfo() {
126        return mLockPatternUtils.getDeviceOwnerInfo();
127    }
128
129    @VisibleForTesting
130    boolean isOwnerInfoEnabled() {
131        return mLockPatternUtils.isOwnerInfoEnabled(MY_USER_ID);
132    }
133
134    @VisibleForTesting
135    String getOwnerInfo() {
136        return mLockPatternUtils.getOwnerInfo(MY_USER_ID);
137    }
138
139    @VisibleForTesting
140    EnforcedAdmin getDeviceOwner() {
141        return RestrictedLockUtils.getDeviceOwner(mContext);
142    }
143}
144