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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.util.Preconditions;
     27 import com.android.settings.core.instrumentation.MetricsFeatureProvider;
     28 import com.android.settings.widget.SwitchBar;
     29 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     30 
     31 /** Handles the logic for flipping the storage management toggle on a {@link SwitchBar}. */
     32 public class AutomaticStorageManagerSwitchBarController
     33         implements SwitchBar.OnSwitchChangeListener {
     34     private static final String STORAGE_MANAGER_ENABLED_BY_DEFAULT_PROPERTY =
     35             "ro.storage_manager.enabled";
     36 
     37     private Context mContext;
     38     private SwitchBar mSwitchBar;
     39     private MetricsFeatureProvider mMetrics;
     40     private Preference mDaysToRetainPreference;
     41     private FragmentManager mFragmentManager;
     42 
     43     public AutomaticStorageManagerSwitchBarController(
     44             Context context,
     45             SwitchBar switchBar,
     46             MetricsFeatureProvider metrics,
     47             Preference daysToRetainPreference,
     48             FragmentManager fragmentManager) {
     49         mContext = Preconditions.checkNotNull(context);
     50         mSwitchBar = Preconditions.checkNotNull(switchBar);
     51         mMetrics = Preconditions.checkNotNull(metrics);
     52         mDaysToRetainPreference = Preconditions.checkNotNull(daysToRetainPreference);
     53         mFragmentManager = Preconditions.checkNotNull(fragmentManager);
     54 
     55         initializeCheckedStatus();
     56     }
     57 
     58     private void initializeCheckedStatus() {
     59         boolean isStorageManagerChecked =
     60                 Settings.Secure.getInt(
     61                                 mContext.getContentResolver(),
     62                                 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED,
     63                                 0)
     64                         != 0;
     65         mSwitchBar.setChecked(isStorageManagerChecked);
     66         mSwitchBar.addOnSwitchChangeListener(this);
     67     }
     68 
     69     @Override
     70     public void onSwitchChanged(Switch switchView, boolean isChecked) {
     71         mMetrics.action(mContext, MetricsEvent.ACTION_TOGGLE_STORAGE_MANAGER, isChecked);
     72         mDaysToRetainPreference.setEnabled(isChecked);
     73         Settings.Secure.putInt(
     74                 mContext.getContentResolver(),
     75                 Settings.Secure.AUTOMATIC_STORAGE_MANAGER_ENABLED,
     76                 isChecked ? 1 : 0);
     77         // Only show a warning if enabling.
     78         if (isChecked) {
     79             maybeShowWarning();
     80         }
     81     }
     82 
     83     /** Unregisters the controller from listening to further events. */
     84     public void tearDown() {
     85         mSwitchBar.removeOnSwitchChangeListener(this);
     86     }
     87 
     88     private void maybeShowWarning() {
     89         // If the storage manager is on by default, we don't need to show the additional dialog.
     90         if (SystemProperties.getBoolean(STORAGE_MANAGER_ENABLED_BY_DEFAULT_PROPERTY, false)) {
     91             return;
     92         }
     93         ActivationWarningFragment fragment = ActivationWarningFragment.newInstance();
     94         fragment.show(mFragmentManager, ActivationWarningFragment.TAG);
     95     }
     96 }
     97