1 /* 2 * Copyright (C) 2014 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 package com.android.settings; 17 18 import android.app.admin.DevicePolicyManager; 19 import android.content.Context; 20 import android.content.Intent; 21 import android.content.res.Resources; 22 import android.os.Bundle; 23 import android.os.UserHandle; 24 import android.provider.Settings; 25 import android.support.v14.preference.SwitchPreference; 26 import android.support.v7.preference.Preference; 27 import android.support.v7.preference.Preference.OnPreferenceChangeListener; 28 import android.support.v7.preference.PreferenceScreen; 29 import android.view.LayoutInflater; 30 import android.view.View; 31 import android.view.ViewGroup; 32 import android.widget.Switch; 33 34 import com.android.internal.logging.nano.MetricsProto.MetricsEvent; 35 import com.android.internal.widget.LockPatternUtils; 36 import com.android.settings.password.ChooseLockGeneric; 37 import com.android.settings.search.BaseSearchIndexProvider; 38 import com.android.settings.search.Indexable; 39 import com.android.settings.search.SearchIndexableRaw; 40 import com.android.settings.widget.SwitchBar; 41 42 import java.util.ArrayList; 43 import java.util.List; 44 45 /** 46 * Screen pinning settings. 47 */ 48 public class ScreenPinningSettings extends SettingsPreferenceFragment 49 implements SwitchBar.OnSwitchChangeListener, Indexable { 50 51 private static final CharSequence KEY_USE_SCREEN_LOCK = "use_screen_lock"; 52 private static final int CHANGE_LOCK_METHOD_REQUEST = 43; 53 54 private SwitchBar mSwitchBar; 55 private SwitchPreference mUseScreenLock; 56 private LockPatternUtils mLockPatternUtils; 57 58 @Override 59 public int getMetricsCategory() { 60 return MetricsEvent.SCREEN_PINNING; 61 } 62 63 @Override 64 public void onActivityCreated(Bundle savedInstanceState) { 65 super.onActivityCreated(savedInstanceState); 66 67 final SettingsActivity activity = (SettingsActivity) getActivity(); 68 mLockPatternUtils = new LockPatternUtils(activity); 69 70 71 mSwitchBar = activity.getSwitchBar(); 72 mSwitchBar.addOnSwitchChangeListener(this); 73 mSwitchBar.show(); 74 mSwitchBar.setChecked(isLockToAppEnabled(getActivity())); 75 } 76 77 @Override 78 protected int getHelpResource() { 79 return R.string.help_url_screen_pinning; 80 } 81 82 @Override 83 public void onViewCreated(View view, Bundle savedInstanceState) { 84 super.onViewCreated(view, savedInstanceState); 85 ViewGroup parent = (ViewGroup) view.findViewById(android.R.id.list_container); 86 View emptyView = LayoutInflater.from(getContext()) 87 .inflate(R.layout.screen_pinning_instructions, parent, false); 88 parent.addView(emptyView); 89 setEmptyView(emptyView); 90 } 91 92 @Override 93 public void onDestroyView() { 94 super.onDestroyView(); 95 96 mSwitchBar.removeOnSwitchChangeListener(this); 97 mSwitchBar.hide(); 98 } 99 100 private static boolean isLockToAppEnabled(Context context) { 101 return Settings.System.getInt(context.getContentResolver(), 102 Settings.System.LOCK_TO_APP_ENABLED, 0) != 0; 103 } 104 105 private void setLockToAppEnabled(boolean isEnabled) { 106 Settings.System.putInt(getContentResolver(), Settings.System.LOCK_TO_APP_ENABLED, 107 isEnabled ? 1 : 0); 108 if (isEnabled) { 109 // Set the value to match what we have defaulted to in the UI. 110 setScreenLockUsedSetting(isScreenLockUsed()); 111 } 112 } 113 114 private boolean isScreenLockUsed() { 115 int def = getCurrentSecurityTitle() != R.string.screen_pinning_unlock_none ? 1 : 0; 116 return Settings.Secure.getInt(getContentResolver(), 117 Settings.Secure.LOCK_TO_APP_EXIT_LOCKED, def) != 0; 118 } 119 120 private boolean setScreenLockUsed(boolean isEnabled) { 121 if (isEnabled) { 122 LockPatternUtils lockPatternUtils = new LockPatternUtils(getActivity()); 123 int passwordQuality = lockPatternUtils 124 .getKeyguardStoredPasswordQuality(UserHandle.myUserId()); 125 if (passwordQuality == DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED) { 126 Intent chooseLockIntent = new Intent(DevicePolicyManager.ACTION_SET_NEW_PASSWORD); 127 chooseLockIntent.putExtra( 128 ChooseLockGeneric.ChooseLockGenericFragment.MINIMUM_QUALITY_KEY, 129 DevicePolicyManager.PASSWORD_QUALITY_SOMETHING); 130 startActivityForResult(chooseLockIntent, CHANGE_LOCK_METHOD_REQUEST); 131 return false; 132 } 133 } 134 setScreenLockUsedSetting(isEnabled); 135 return true; 136 } 137 138 private void setScreenLockUsedSetting(boolean isEnabled) { 139 Settings.Secure.putInt(getContentResolver(), Settings.Secure.LOCK_TO_APP_EXIT_LOCKED, 140 isEnabled ? 1 : 0); 141 } 142 143 @Override 144 public void onActivityResult(int requestCode, int resultCode, Intent data) { 145 super.onActivityResult(requestCode, resultCode, data); 146 if (requestCode == CHANGE_LOCK_METHOD_REQUEST) { 147 LockPatternUtils lockPatternUtils = new LockPatternUtils(getActivity()); 148 boolean validPassQuality = lockPatternUtils.getKeyguardStoredPasswordQuality( 149 UserHandle.myUserId()) 150 != DevicePolicyManager.PASSWORD_QUALITY_UNSPECIFIED; 151 setScreenLockUsed(validPassQuality); 152 // Make sure the screen updates. 153 mUseScreenLock.setChecked(validPassQuality); 154 } 155 } 156 157 private int getCurrentSecurityTitle() { 158 int quality = mLockPatternUtils.getKeyguardStoredPasswordQuality( 159 UserHandle.myUserId()); 160 switch (quality) { 161 case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC: 162 case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX: 163 return R.string.screen_pinning_unlock_pin; 164 case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC: 165 case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC: 166 case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX: 167 case DevicePolicyManager.PASSWORD_QUALITY_MANAGED: 168 return R.string.screen_pinning_unlock_password; 169 case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING: 170 if (mLockPatternUtils.isLockPatternEnabled(UserHandle.myUserId())) { 171 return R.string.screen_pinning_unlock_pattern; 172 } 173 } 174 return R.string.screen_pinning_unlock_none; 175 } 176 177 /** 178 * Listens to the state change of the lock-to-app master switch. 179 */ 180 @Override 181 public void onSwitchChanged(Switch switchView, boolean isChecked) { 182 setLockToAppEnabled(isChecked); 183 updateDisplay(); 184 } 185 186 public void updateDisplay() { 187 PreferenceScreen root = getPreferenceScreen(); 188 if (root != null) { 189 root.removeAll(); 190 } 191 if (isLockToAppEnabled(getActivity())) { 192 addPreferencesFromResource(R.xml.screen_pinning_settings); 193 root = getPreferenceScreen(); 194 195 mUseScreenLock = (SwitchPreference) root.findPreference(KEY_USE_SCREEN_LOCK); 196 mUseScreenLock.setOnPreferenceChangeListener(new OnPreferenceChangeListener() { 197 @Override 198 public boolean onPreferenceChange(Preference preference, Object newValue) { 199 return setScreenLockUsed((boolean) newValue); 200 } 201 }); 202 mUseScreenLock.setChecked(isScreenLockUsed()); 203 mUseScreenLock.setTitle(getCurrentSecurityTitle()); 204 } 205 } 206 207 /** 208 * For search 209 */ 210 public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER = 211 new BaseSearchIndexProvider() { 212 @Override 213 public List<SearchIndexableRaw> getRawDataToIndex(Context context, boolean enabled) { 214 final List<SearchIndexableRaw> result = new ArrayList<SearchIndexableRaw>(); 215 216 final Resources res = context.getResources(); 217 218 // Add fragment title 219 SearchIndexableRaw data = new SearchIndexableRaw(context); 220 data.title = res.getString(R.string.screen_pinning_title); 221 data.screenTitle = res.getString(R.string.screen_pinning_title); 222 result.add(data); 223 224 if (isLockToAppEnabled(context)) { 225 // Screen lock option 226 data = new SearchIndexableRaw(context); 227 data.title = res.getString(R.string.screen_pinning_unlock_none); 228 data.screenTitle = res.getString(R.string.screen_pinning_title); 229 result.add(data); 230 } else { 231 // Screen pinning description. 232 data = new SearchIndexableRaw(context); 233 data.title = res.getString(R.string.screen_pinning_description); 234 data.screenTitle = res.getString(R.string.screen_pinning_title); 235 result.add(data); 236 } 237 238 return result; 239 } 240 }; 241 } 242
