1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 5 * except in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the 10 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 11 * KIND, either express or implied. See the License for the specific language governing 12 * permissions and limitations under the License. 13 */ 14 package com.android.settings.display; 15 16 import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT; 17 18 import android.app.admin.DevicePolicyManager; 19 import android.content.Context; 20 import android.os.UserHandle; 21 import android.os.UserManager; 22 import android.provider.Settings; 23 import android.util.Log; 24 25 import androidx.preference.Preference; 26 27 import com.android.settings.R; 28 import com.android.settings.core.PreferenceControllerMixin; 29 import com.android.settingslib.RestrictedLockUtils; 30 import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin; 31 import com.android.settingslib.RestrictedLockUtilsInternal; 32 import com.android.settingslib.core.AbstractPreferenceController; 33 34 public class TimeoutPreferenceController extends AbstractPreferenceController implements 35 PreferenceControllerMixin, Preference.OnPreferenceChangeListener { 36 37 private static final String TAG = "TimeoutPrefContr"; 38 39 /** If there is no setting in the provider, use this. */ 40 public static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000; 41 42 private final String mScreenTimeoutKey; 43 TimeoutPreferenceController(Context context, String key)44 public TimeoutPreferenceController(Context context, String key) { 45 super(context); 46 mScreenTimeoutKey = key; 47 } 48 49 @Override isAvailable()50 public boolean isAvailable() { 51 return true; 52 } 53 54 @Override getPreferenceKey()55 public String getPreferenceKey() { 56 return mScreenTimeoutKey; 57 } 58 59 @Override updateState(Preference preference)60 public void updateState(Preference preference) { 61 final TimeoutListPreference timeoutListPreference = (TimeoutListPreference) preference; 62 final long currentTimeout = Settings.System.getLong(mContext.getContentResolver(), 63 SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE); 64 timeoutListPreference.setValue(String.valueOf(currentTimeout)); 65 final DevicePolicyManager dpm = 66 (DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE); 67 if (dpm != null) { 68 final RestrictedLockUtils.EnforcedAdmin admin = 69 RestrictedLockUtilsInternal.checkIfMaximumTimeToLockIsSet(mContext); 70 final long maxTimeout = 71 dpm.getMaximumTimeToLock(null /* admin */, UserHandle.myUserId()); 72 timeoutListPreference.removeUnusableTimeouts(maxTimeout, admin); 73 } 74 updateTimeoutPreferenceDescription(timeoutListPreference, 75 Long.parseLong(timeoutListPreference.getValue())); 76 77 final EnforcedAdmin admin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced( 78 mContext, UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT, 79 UserHandle.myUserId()); 80 if (admin != null) { 81 timeoutListPreference.removeUnusableTimeouts(0/* disable all*/, admin); 82 } 83 } 84 85 @Override onPreferenceChange(Preference preference, Object newValue)86 public boolean onPreferenceChange(Preference preference, Object newValue) { 87 try { 88 int value = Integer.parseInt((String) newValue); 89 Settings.System.putInt(mContext.getContentResolver(), SCREEN_OFF_TIMEOUT, value); 90 updateTimeoutPreferenceDescription((TimeoutListPreference) preference, value); 91 } catch (NumberFormatException e) { 92 Log.e(TAG, "could not persist screen timeout setting", e); 93 } 94 return true; 95 } 96 getTimeoutDescription( long currentTimeout, CharSequence[] entries, CharSequence[] values)97 public static CharSequence getTimeoutDescription( 98 long currentTimeout, CharSequence[] entries, CharSequence[] values) { 99 if (currentTimeout < 0 || entries == null || values == null 100 || values.length != entries.length) { 101 return null; 102 } 103 104 for (int i = 0; i < values.length; i++) { 105 long timeout = Long.parseLong(values[i].toString()); 106 if (currentTimeout == timeout) { 107 return entries[i]; 108 } 109 } 110 return null; 111 } 112 updateTimeoutPreferenceDescription(TimeoutListPreference preference, long currentTimeout)113 private void updateTimeoutPreferenceDescription(TimeoutListPreference preference, 114 long currentTimeout) { 115 final CharSequence[] entries = preference.getEntries(); 116 final CharSequence[] values = preference.getEntryValues(); 117 final String summary; 118 if (preference.isDisabledByAdmin()) { 119 summary = mContext.getString(com.android.settings.R.string.disabled_by_policy_title); 120 } else { 121 final CharSequence timeoutDescription = getTimeoutDescription( 122 currentTimeout, entries, values); 123 summary = timeoutDescription == null 124 ? "" 125 : mContext.getString(R.string.screen_timeout_summary, timeoutDescription); 126 } 127 preference.setSummary(summary); 128 } 129 130 } 131