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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 package com.android.settings.applications;
     17 
     18 import static android.app.AppOpsManager.MODE_ALLOWED;
     19 import static android.app.AppOpsManager.MODE_ERRORED;
     20 import static android.app.AppOpsManager.OP_PICTURE_IN_PICTURE;
     21 
     22 import android.app.AlertDialog;
     23 import android.app.AppOpsManager;
     24 import android.content.Context;
     25 import android.content.Intent;
     26 import android.os.Bundle;
     27 import android.provider.Settings;
     28 import android.support.v14.preference.SwitchPreference;
     29 import android.support.v7.preference.Preference;
     30 import android.support.v7.preference.Preference.OnPreferenceChangeListener;
     31 
     32 import com.android.internal.annotations.VisibleForTesting;
     33 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
     34 import com.android.settings.R;
     35 import com.android.settings.overlay.FeatureFactory;
     36 
     37 public class PictureInPictureDetails extends AppInfoWithHeader
     38         implements OnPreferenceChangeListener {
     39 
     40     private static final String KEY_APP_OPS_SETTINGS_SWITCH = "app_ops_settings_switch";
     41     private static final String KEY_APP_OPS_SETTINGS_PREFS = "app_ops_settings_preference";
     42     private static final String KEY_APP_OPS_SETTINGS_DESC = "app_ops_settings_description";
     43     private static final String LOG_TAG = "PictureInPictureDetails";
     44 
     45     private SwitchPreference mSwitchPref;
     46     private Preference mOverlayDesc;
     47     private Intent mSettingsIntent;
     48 
     49     @Override
     50     public void onCreate(Bundle savedInstanceState) {
     51         super.onCreate(savedInstanceState);
     52 
     53         // find preferences
     54         addPreferencesFromResource(R.xml.app_ops_permissions_details);
     55         mSwitchPref = (SwitchPreference) findPreference(KEY_APP_OPS_SETTINGS_SWITCH);
     56         mOverlayDesc = findPreference(KEY_APP_OPS_SETTINGS_DESC);
     57         getPreferenceScreen().removePreference(findPreference(KEY_APP_OPS_SETTINGS_PREFS));
     58 
     59         // set title/summary for all of them
     60         getPreferenceScreen().setTitle(R.string.picture_in_picture_app_detail_title);
     61         mSwitchPref.setTitle(R.string.picture_in_picture_app_detail_switch);
     62         mOverlayDesc.setSummary(R.string.picture_in_picture_app_detail_summary);
     63 
     64         // install event listeners
     65         mSwitchPref.setOnPreferenceChangeListener(this);
     66 
     67         mSettingsIntent = new Intent(Intent.ACTION_MAIN)
     68                 .setAction(Settings.ACTION_PICTURE_IN_PICTURE_SETTINGS);
     69     }
     70 
     71     @Override
     72     public boolean onPreferenceChange(Preference preference, Object newValue) {
     73         if (preference == mSwitchPref) {
     74             logSpecialPermissionChange((Boolean) newValue, mPackageName);
     75             setEnterPipStateForPackage(getActivity(), mPackageInfo.applicationInfo.uid, mPackageName,
     76                     (Boolean) newValue);
     77             return true;
     78         }
     79         return false;
     80     }
     81 
     82     @Override
     83     protected boolean refreshUi() {
     84         boolean isAllowed = getEnterPipStateForPackage(getActivity(),
     85                 mPackageInfo.applicationInfo.uid, mPackageName);
     86         mSwitchPref.setChecked(isAllowed);
     87         return true;
     88     }
     89 
     90     @Override
     91     protected AlertDialog createDialog(int id, int errorCode) {
     92         return null;
     93     }
     94 
     95     @Override
     96     public int getMetricsCategory() {
     97         return MetricsEvent.SETTINGS_MANAGE_PICTURE_IN_PICTURE;
     98     }
     99 
    100     /**
    101      * Sets whether the app associated with the given {@param packageName} is allowed to enter
    102      * picture-in-picture.
    103      */
    104     static void setEnterPipStateForPackage(Context context, int uid, String packageName,
    105             boolean value) {
    106         final AppOpsManager appOps = context.getSystemService(AppOpsManager.class);
    107         final int newMode = value ? MODE_ALLOWED : MODE_ERRORED;
    108         appOps.setMode(OP_PICTURE_IN_PICTURE, uid, packageName, newMode);
    109     }
    110 
    111     /**
    112      * @return whether the app associated with the given {@param packageName} is allowed to enter
    113      *         picture-in-picture.
    114      */
    115     static boolean getEnterPipStateForPackage(Context context, int uid, String packageName) {
    116         final AppOpsManager appOps = context.getSystemService(AppOpsManager.class);
    117         return appOps.checkOpNoThrow(OP_PICTURE_IN_PICTURE, uid, packageName) == MODE_ALLOWED;
    118     }
    119 
    120     /**
    121      * @return the summary for the current state of whether the app associated with the given
    122      *         {@param packageName} is allowed to enter picture-in-picture.
    123      */
    124     static int getPreferenceSummary(Context context, int uid, String packageName) {
    125         final boolean enabled = PictureInPictureDetails.getEnterPipStateForPackage(context, uid,
    126                 packageName);
    127         return enabled ? R.string.picture_in_picture_on : R.string.picture_in_picture_off;
    128     }
    129 
    130     @VisibleForTesting
    131     void logSpecialPermissionChange(boolean newState, String packageName) {
    132         int logCategory = newState
    133                 ? MetricsEvent.APP_PICTURE_IN_PICTURE_ALLOW
    134                 : MetricsEvent.APP_PICTURE_IN_PICTURE_DENY;
    135         FeatureFactory.getFactory(getContext())
    136                 .getMetricsFeatureProvider().action(getContext(), logCategory, packageName);
    137     }
    138 }
    139