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.support.v7.preference.Preference; 24 import android.util.Log; 25 26 import com.android.settings.R; 27 import com.android.settings.TimeoutListPreference; 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.core.AbstractPreferenceController; 32 33 public class TimeoutPreferenceController extends AbstractPreferenceController implements 34 PreferenceControllerMixin, Preference.OnPreferenceChangeListener { 35 36 private static final String TAG = "TimeoutPrefContr"; 37 38 /** If there is no setting in the provider, use this. */ 39 public static final int FALLBACK_SCREEN_TIMEOUT_VALUE = 30000; 40 41 private final String mScreenTimeoutKey; 42 TimeoutPreferenceController(Context context, String key)43 public TimeoutPreferenceController(Context context, String key) { 44 super(context); 45 mScreenTimeoutKey = key; 46 } 47 48 @Override isAvailable()49 public boolean isAvailable() { 50 return true; 51 } 52 53 @Override getPreferenceKey()54 public String getPreferenceKey() { 55 return mScreenTimeoutKey; 56 } 57 58 @Override updateState(Preference preference)59 public void updateState(Preference preference) { 60 final TimeoutListPreference timeoutListPreference = (TimeoutListPreference) preference; 61 final long currentTimeout = Settings.System.getLong(mContext.getContentResolver(), 62 SCREEN_OFF_TIMEOUT, FALLBACK_SCREEN_TIMEOUT_VALUE); 63 timeoutListPreference.setValue(String.valueOf(currentTimeout)); 64 final DevicePolicyManager dpm = 65 (DevicePolicyManager) mContext.getSystemService(Context.DEVICE_POLICY_SERVICE); 66 if (dpm != null) { 67 final RestrictedLockUtils.EnforcedAdmin admin = 68 RestrictedLockUtils.checkIfMaximumTimeToLockIsSet(mContext); 69 final long maxTimeout = 70 dpm.getMaximumTimeToLock(null /* admin */, UserHandle.myUserId()); 71 timeoutListPreference.removeUnusableTimeouts(maxTimeout, admin); 72 } 73 updateTimeoutPreferenceDescription(timeoutListPreference, currentTimeout); 74 75 EnforcedAdmin admin = RestrictedLockUtils.checkIfRestrictionEnforced( 76 mContext, UserManager.DISALLOW_CONFIG_SCREEN_TIMEOUT, 77 UserHandle.myUserId()); 78 if(admin != null) { 79 timeoutListPreference.removeUnusableTimeouts(0/* disable all*/, admin); 80 } 81 } 82 83 @Override onPreferenceChange(Preference preference, Object newValue)84 public boolean onPreferenceChange(Preference preference, Object newValue) { 85 try { 86 int value = Integer.parseInt((String) newValue); 87 Settings.System.putInt(mContext.getContentResolver(), SCREEN_OFF_TIMEOUT, value); 88 updateTimeoutPreferenceDescription((TimeoutListPreference) preference, value); 89 } catch (NumberFormatException e) { 90 Log.e(TAG, "could not persist screen timeout setting", e); 91 } 92 return true; 93 } 94 getTimeoutDescription( long currentTimeout, CharSequence[] entries, CharSequence[] values)95 public static CharSequence getTimeoutDescription( 96 long currentTimeout, CharSequence[] entries, CharSequence[] values) { 97 if (currentTimeout < 0 || entries == null || values == null 98 || values.length != entries.length) { 99 return null; 100 } 101 102 for (int i = 0; i < values.length; i++) { 103 long timeout = Long.parseLong(values[i].toString()); 104 if (currentTimeout == timeout) { 105 return entries[i]; 106 } 107 } 108 return null; 109 } 110 updateTimeoutPreferenceDescription(TimeoutListPreference preference, long currentTimeout)111 private void updateTimeoutPreferenceDescription(TimeoutListPreference preference, 112 long currentTimeout) { 113 final CharSequence[] entries = preference.getEntries(); 114 final CharSequence[] values = preference.getEntryValues(); 115 final String summary; 116 if (preference.isDisabledByAdmin()) { 117 summary = mContext.getString(com.android.settings.R.string.disabled_by_policy_title); 118 } else { 119 final CharSequence timeoutDescription = getTimeoutDescription( 120 currentTimeout, entries, values); 121 summary = timeoutDescription == null 122 ? "" 123 : mContext.getString(R.string.screen_timeout_summary, timeoutDescription); 124 } 125 preference.setSummary(summary); 126 } 127 128 } 129