ConfigureNotificationSettings.java revision d553f4f9a94a16bb19463fb42294212dbc21c09a 
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
17package com.android.settings.notification;
18
19import android.content.ContentResolver;
20import android.content.Context;
21import android.database.ContentObserver;
22import android.net.Uri;
23import android.os.Bundle;
24import android.os.Handler;
25import android.os.UserHandle;
26import android.provider.Settings;
27import android.support.v7.preference.Preference;
28import android.support.v7.preference.Preference.OnPreferenceChangeListener;
29import android.support.v7.preference.TwoStatePreference;
30import android.util.Log;
31
32import com.android.internal.widget.LockPatternUtils;
33import com.android.settings.InstrumentedFragment;
34import com.android.settings.R;
35import com.android.settings.RestrictedListPreference.RestrictedItem;
36import com.android.settings.SettingsPreferenceFragment;
37import com.android.settingslib.RestrictedLockUtils;
38
39import java.util.ArrayList;
40
41import static android.app.admin.DevicePolicyManager.KEYGUARD_DISABLE_SECURE_NOTIFICATIONS;
42import static android.app.admin.DevicePolicyManager.KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS;
43
44import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
45
46public class ConfigureNotificationSettings extends SettingsPreferenceFragment {
47    private static final String TAG = "ConfigNotiSettings";
48
49    private static final String KEY_NOTIFICATION_PULSE = "notification_pulse";
50    private static final String KEY_LOCK_SCREEN_NOTIFICATIONS = "lock_screen_notifications";
51
52    private final SettingsObserver mSettingsObserver = new SettingsObserver();
53
54    private Context mContext;
55
56    private TwoStatePreference mNotificationPulse;
57    private NotificationLockscreenPreference mLockscreen;
58    private boolean mSecure;
59    private int mLockscreenSelectedValue;
60
61    @Override
62    protected int getMetricsCategory() {
63        return InstrumentedFragment.CONFIGURE_NOTIFICATION;
64    }
65
66    @Override
67    public void onCreate(Bundle savedInstanceState) {
68        super.onCreate(savedInstanceState);
69        mContext = getActivity();
70        mSecure = new LockPatternUtils(getActivity()).isSecure(UserHandle.myUserId());
71
72        addPreferencesFromResource(R.xml.configure_notification_settings);
73
74        initPulse();
75        initLockscreenNotifications();
76
77    }
78
79    @Override
80    public void onResume() {
81        super.onResume();
82        mSettingsObserver.register(true);
83    }
84
85    @Override
86    public void onPause() {
87        super.onPause();
88        mSettingsObserver.register(false);
89    }
90
91    // === Pulse notification light ===
92
93    private void initPulse() {
94        mNotificationPulse =
95                (TwoStatePreference) getPreferenceScreen().findPreference(KEY_NOTIFICATION_PULSE);
96        if (mNotificationPulse == null) {
97            Log.i(TAG, "Preference not found: " + KEY_NOTIFICATION_PULSE);
98            return;
99        }
100        if (!getResources()
101                .getBoolean(com.android.internal.R.bool.config_intrusiveNotificationLed)) {
102            getPreferenceScreen().removePreference(mNotificationPulse);
103        } else {
104            updatePulse();
105            mNotificationPulse.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
106                @Override
107                public boolean onPreferenceChange(Preference preference, Object newValue) {
108                    final boolean val = (Boolean)newValue;
109                    return Settings.System.putInt(getContentResolver(),
110                            Settings.System.NOTIFICATION_LIGHT_PULSE,
111                            val ? 1 : 0);
112                }
113            });
114        }
115    }
116
117    private void updatePulse() {
118        if (mNotificationPulse == null) {
119            return;
120        }
121        try {
122            mNotificationPulse.setChecked(Settings.System.getInt(getContentResolver(),
123                    Settings.System.NOTIFICATION_LIGHT_PULSE) == 1);
124        } catch (Settings.SettingNotFoundException snfe) {
125            Log.e(TAG, Settings.System.NOTIFICATION_LIGHT_PULSE + " not found");
126        }
127    }
128
129    // === Lockscreen (public / private) notifications ===
130
131    private void initLockscreenNotifications() {
132        mLockscreen = (NotificationLockscreenPreference) getPreferenceScreen().findPreference(
133                KEY_LOCK_SCREEN_NOTIFICATIONS);
134        if (mLockscreen == null) {
135            Log.i(TAG, "Preference not found: " + KEY_LOCK_SCREEN_NOTIFICATIONS);
136            return;
137        }
138
139        ArrayList<CharSequence> entries = new ArrayList<>();
140        ArrayList<CharSequence> values = new ArrayList<>();
141        entries.add(getString(R.string.lock_screen_notifications_summary_disable));
142        values.add(Integer.toString(R.string.lock_screen_notifications_summary_disable));
143
144        String summaryShowEntry = getString(R.string.lock_screen_notifications_summary_show);
145        String summaryShowEntryValue = Integer.toString(
146                R.string.lock_screen_notifications_summary_show);
147        entries.add(summaryShowEntry);
148        values.add(summaryShowEntryValue);
149        setRestrictedIfNotificationFeaturesDisabled(summaryShowEntry, summaryShowEntryValue,
150                KEYGUARD_DISABLE_SECURE_NOTIFICATIONS | KEYGUARD_DISABLE_UNREDACTED_NOTIFICATIONS);
151
152        if (mSecure) {
153            String summaryHideEntry = getString(R.string.lock_screen_notifications_summary_hide);
154            String summaryHideEntryValue = Integer.toString(
155                    R.string.lock_screen_notifications_summary_hide);
156            entries.add(summaryHideEntry);
157            values.add(summaryHideEntryValue);
158            setRestrictedIfNotificationFeaturesDisabled(summaryHideEntry, summaryHideEntryValue,
159                    KEYGUARD_DISABLE_SECURE_NOTIFICATIONS);
160        }
161
162        mLockscreen.setEntries(entries.toArray(new CharSequence[entries.size()]));
163        mLockscreen.setEntryValues(values.toArray(new CharSequence[values.size()]));
164        updateLockscreenNotifications();
165        if (mLockscreen.getEntries().length > 1) {
166            mLockscreen.setOnPreferenceChangeListener(new OnPreferenceChangeListener() {
167                @Override
168                public boolean onPreferenceChange(Preference preference, Object newValue) {
169                    final int val = Integer.parseInt((String) newValue);
170                    if (val == mLockscreenSelectedValue) {
171                        return false;
172                    }
173                    final boolean enabled =
174                            val != R.string.lock_screen_notifications_summary_disable;
175                    final boolean show = val == R.string.lock_screen_notifications_summary_show;
176                    Settings.Secure.putInt(getContentResolver(),
177                            Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, show ? 1 : 0);
178                    Settings.Secure.putInt(getContentResolver(),
179                            Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, enabled ? 1 : 0);
180                    mLockscreenSelectedValue = val;
181                    return true;
182                }
183            });
184        } else {
185            // There is one or less option for the user, disable the drop down.
186            mLockscreen.setEnabled(false);
187        }
188    }
189
190    private void setRestrictedIfNotificationFeaturesDisabled(CharSequence entry,
191            CharSequence entryValue, int keyguardNotificationFeatures) {
192        EnforcedAdmin admin = RestrictedLockUtils.checkIfKeyguardFeaturesDisabled(
193                mContext, keyguardNotificationFeatures, UserHandle.myUserId());
194        if (admin != null) {
195            RestrictedItem item = new RestrictedItem(entry, entryValue, admin);
196            mLockscreen.addRestrictedItem(item);
197        }
198    }
199
200    private void updateLockscreenNotifications() {
201        if (mLockscreen == null) {
202            return;
203        }
204        final boolean enabled = getLockscreenNotificationsEnabled();
205        final boolean allowPrivate = !mSecure || getLockscreenAllowPrivateNotifications();
206        mLockscreenSelectedValue = !enabled ? R.string.lock_screen_notifications_summary_disable :
207                allowPrivate ? R.string.lock_screen_notifications_summary_show :
208                R.string.lock_screen_notifications_summary_hide;
209        mLockscreen.setValue(Integer.toString(mLockscreenSelectedValue));
210    }
211
212    private boolean getLockscreenNotificationsEnabled() {
213        return Settings.Secure.getInt(getContentResolver(),
214                Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS, 0) != 0;
215    }
216
217    private boolean getLockscreenAllowPrivateNotifications() {
218        return Settings.Secure.getInt(getContentResolver(),
219                Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS, 0) != 0;
220    }
221
222
223    // === Callbacks ===
224
225    private final class SettingsObserver extends ContentObserver {
226        private final Uri NOTIFICATION_LIGHT_PULSE_URI =
227                Settings.System.getUriFor(Settings.System.NOTIFICATION_LIGHT_PULSE);
228        private final Uri LOCK_SCREEN_PRIVATE_URI =
229                Settings.Secure.getUriFor(Settings.Secure.LOCK_SCREEN_ALLOW_PRIVATE_NOTIFICATIONS);
230        private final Uri LOCK_SCREEN_SHOW_URI =
231                Settings.Secure.getUriFor(Settings.Secure.LOCK_SCREEN_SHOW_NOTIFICATIONS);
232
233        public SettingsObserver() {
234            super(new Handler());
235        }
236
237        public void register(boolean register) {
238            final ContentResolver cr = getContentResolver();
239            if (register) {
240                cr.registerContentObserver(NOTIFICATION_LIGHT_PULSE_URI, false, this);
241                cr.registerContentObserver(LOCK_SCREEN_PRIVATE_URI, false, this);
242                cr.registerContentObserver(LOCK_SCREEN_SHOW_URI, false, this);
243            } else {
244                cr.unregisterContentObserver(this);
245            }
246        }
247
248        @Override
249        public void onChange(boolean selfChange, Uri uri) {
250            super.onChange(selfChange, uri);
251            if (NOTIFICATION_LIGHT_PULSE_URI.equals(uri)) {
252                updatePulse();
253            }
254            if (LOCK_SCREEN_PRIVATE_URI.equals(uri) || LOCK_SCREEN_SHOW_URI.equals(uri)) {
255                updateLockscreenNotifications();
256            }
257        }
258    }
259}
260