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 17 package com.android.settings.utils; 18 19 import android.annotation.Nullable; 20 import android.app.AlertDialog; 21 import android.app.Dialog; 22 import android.app.DialogFragment; 23 import android.content.ComponentName; 24 import android.content.Context; 25 import android.content.DialogInterface; 26 import android.content.pm.PackageItemInfo; 27 import android.content.pm.PackageManager; 28 import android.content.pm.ServiceInfo; 29 import android.os.Bundle; 30 import android.support.v14.preference.SwitchPreference; 31 import android.support.v7.preference.Preference; 32 import android.support.v7.preference.Preference.OnPreferenceChangeListener; 33 import android.support.v7.preference.PreferenceScreen; 34 import android.view.View; 35 import android.widget.TextView; 36 import com.android.settings.R; 37 import com.android.settings.notification.EmptyTextSettings; 38 39 import java.util.Collections; 40 import java.util.List; 41 42 public abstract class ManagedServiceSettings extends EmptyTextSettings { 43 private final Config mConfig; 44 45 protected Context mContext; 46 private PackageManager mPM; 47 protected ServiceListing mServiceListing; 48 private TextView mEmpty; 49 50 abstract protected Config getConfig(); 51 52 public ManagedServiceSettings() { 53 mConfig = getConfig(); 54 } 55 56 @Override 57 public void onCreate(Bundle icicle) { 58 super.onCreate(icicle); 59 60 mContext = getActivity(); 61 mPM = mContext.getPackageManager(); 62 mServiceListing = new ServiceListing(mContext, mConfig); 63 mServiceListing.addCallback(new ServiceListing.Callback() { 64 @Override 65 public void onServicesReloaded(List<ServiceInfo> services) { 66 updateList(services); 67 } 68 }); 69 setPreferenceScreen(getPreferenceManager().createPreferenceScreen(mContext)); 70 } 71 72 @Override 73 public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { 74 super.onViewCreated(view, savedInstanceState); 75 setEmptyText(mConfig.emptyText); 76 } 77 78 @Override 79 public void onResume() { 80 super.onResume(); 81 mServiceListing.reload(); 82 mServiceListing.setListening(true); 83 } 84 85 @Override 86 public void onPause() { 87 super.onPause(); 88 mServiceListing.setListening(false); 89 } 90 91 private void updateList(List<ServiceInfo> services) { 92 final PreferenceScreen screen = getPreferenceScreen(); 93 screen.removeAll(); 94 Collections.sort(services, new PackageItemInfo.DisplayNameComparator(mPM)); 95 for (ServiceInfo service : services) { 96 final ComponentName cn = new ComponentName(service.packageName, service.name); 97 final String title = service.loadLabel(mPM).toString(); 98 final SwitchPreference pref = new SwitchPreference(getPrefContext()); 99 pref.setPersistent(false); 100 pref.setIcon(service.loadIcon(mPM)); 101 pref.setTitle(title); 102 pref.setChecked(mServiceListing.isEnabled(cn)); 103 pref.setOnPreferenceChangeListener(new OnPreferenceChangeListener() { 104 @Override 105 public boolean onPreferenceChange(Preference preference, Object newValue) { 106 final boolean enable = (boolean) newValue; 107 return setEnabled(cn, title, enable); 108 } 109 }); 110 screen.addPreference(pref); 111 } 112 } 113 114 protected boolean setEnabled(ComponentName service, String title, boolean enable) { 115 if (!enable) { 116 // the simple version: disabling 117 mServiceListing.setEnabled(service, false); 118 return true; 119 } else { 120 if (mServiceListing.isEnabled(service)) { 121 return true; // already enabled 122 } 123 // show a scary dialog 124 new ScaryWarningDialogFragment() 125 .setServiceInfo(service, title) 126 .show(getFragmentManager(), "dialog"); 127 return false; 128 } 129 } 130 131 public class ScaryWarningDialogFragment extends DialogFragment { 132 static final String KEY_COMPONENT = "c"; 133 static final String KEY_LABEL = "l"; 134 135 public ScaryWarningDialogFragment setServiceInfo(ComponentName cn, String label) { 136 Bundle args = new Bundle(); 137 args.putString(KEY_COMPONENT, cn.flattenToString()); 138 args.putString(KEY_LABEL, label); 139 setArguments(args); 140 return this; 141 } 142 143 @Override 144 public Dialog onCreateDialog(Bundle savedInstanceState) { 145 super.onCreate(savedInstanceState); 146 final Bundle args = getArguments(); 147 final String label = args.getString(KEY_LABEL); 148 final ComponentName cn = ComponentName.unflattenFromString(args 149 .getString(KEY_COMPONENT)); 150 151 final String title = getResources().getString(mConfig.warningDialogTitle, label); 152 final String summary = getResources().getString(mConfig.warningDialogSummary, label); 153 return new AlertDialog.Builder(mContext) 154 .setMessage(summary) 155 .setTitle(title) 156 .setCancelable(true) 157 .setPositiveButton(R.string.allow, 158 new DialogInterface.OnClickListener() { 159 public void onClick(DialogInterface dialog, int id) { 160 mServiceListing.setEnabled(cn, true); 161 } 162 }) 163 .setNegativeButton(R.string.deny, 164 new DialogInterface.OnClickListener() { 165 public void onClick(DialogInterface dialog, int id) { 166 // pass 167 } 168 }) 169 .create(); 170 } 171 } 172 173 public static class Config { 174 public String tag; 175 public String setting; 176 public String secondarySetting; 177 public String intentAction; 178 public String permission; 179 public String noun; 180 public int warningDialogTitle; 181 public int warningDialogSummary; 182 public int emptyText; 183 } 184 } 185
