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      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  */
     16 
     17 package com.android.settings.deletionhelper;
     18 
     19 import android.app.FragmentManager;
     20 import android.content.Context;
     21 import android.os.SystemProperties;
     22 import android.provider.Settings;
     23 import android.support.v7.preference.Preference;
     24 import android.widget.Switch;
     25 
     26 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     27 import com.android.internal.util.Preconditions;
     28 import com.android.settings.widget.SwitchBar;
     29 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
     30 import com.android.settingslib.Utils;
     31 
     32 /** Handles the logic for flipping the storage management toggle on a {@link SwitchBar}. */
     33 public class AutomaticStorageManagerSwitchBarController
     34         implements SwitchBar.OnSwitchChangeListener {
     35     private static final String STORAGE_MANAGER_ENABLED_BY_DEFAULT_PROPERTY =
     36             "ro.storage_manager.enabled";
     37 
     38     private Context mContext;
     39     private SwitchBar mSwitchBar;
     40     private MetricsFeatureProvider mMetrics;
     41     private Preference mDaysToRetainPreference;
     42     private FragmentManager mFragmentManager;
     43 
     44     public AutomaticStorageManagerSwitchBarController(
     45             Context context,
     46             SwitchBar switchBar,
     47             MetricsFeatureProvider metrics,
     48             Preference daysToRetainPreference,
     49             FragmentManager fragmentManager) {
     50         mContext = Preconditions.checkNotNull(context);
     51         mSwitchBar = Preconditions.checkNotNull(switchBar);
     52         mMetrics = Preconditions.checkNotNull(metrics);
     53         mDaysToRetainPreference = Preconditions.checkNotNull(daysToRetainPreference);
     54         mFragmentManager = Preconditions.checkNotNull(fragmentManager);
     55 
     56         initializeCheckedStatus();
     57     }
     58 
     59     private void initializeCheckedStatus() {
     60         mSwitchBar.setChecked(Utils.isStorageManagerEnabled(mContext));
     61         mSwitchBar.addOnSwitchChangeListener(this);
     62     }
     63 
     64     @Override
     65     public void onSwitchChanged(Switch switchView, boolean isChecked) {
     66         mMetrics.action(mContext, MetricsEvent.ACTION_TOGGLE_STORAGE_MANAGER, isChecked);
     67         mDaysToRetainPreference.setEnabled(isChecked);
     68         Settings.Secure.putInt(
     69                 mContext.getContentResolver(),
     70                 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED,
     71                 isChecked ? 1 : 0);
     72         // Only show a warning if enabling.
     73         if (isChecked) {
     74             maybeShowWarning();
     75         }
     76     }
     77 
     78     /** Unregisters the controller from listening to further events. */
     79     public void tearDown() {
     80         mSwitchBar.removeOnSwitchChangeListener(this);
     81     }
     82 
     83     private void maybeShowWarning() {
     84         // If the storage manager is on by default, we don't need to show the additional dialog.
     85         if (SystemProperties.getBoolean(STORAGE_MANAGER_ENABLED_BY_DEFAULT_PROPERTY, false)) {
     86             return;
     87         }
     88         ActivationWarningFragment fragment = ActivationWarningFragment.newInstance();
     89         fragment.show(mFragmentManager, ActivationWarningFragment.TAG);
     90     }
     91 }
     92