1 /* 2 * Copyright (C) 2016 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.bips.ui; 18 19 import android.app.AlertDialog; 20 import android.content.ComponentName; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.ServiceConnection; 24 import android.os.Bundle; 25 import android.os.IBinder; 26 import android.preference.Preference; 27 import android.preference.PreferenceCategory; 28 import android.preference.PreferenceFragment; 29 import android.util.Log; 30 31 import com.android.bips.BuiltInPrintService; 32 import com.android.bips.R; 33 import com.android.bips.discovery.DiscoveredPrinter; 34 import com.android.bips.p2p.P2pUtils; 35 36 /** 37 * Presents a list of printers and the ability to add a new one 38 */ 39 public class AddPrintersFragment extends PreferenceFragment implements ServiceConnection { 40 private static final String TAG = AddPrintersFragment.class.getSimpleName(); 41 private static final boolean DEBUG = false; 42 43 private static final String KEY_ADD_BY_IP = "add_by_ip"; 44 private static final String KEY_FIND_WIFI_DIRECT = "find_wifi_direct"; 45 private static final String KEY_SAVED_PRINTERS = "saved_printers"; 46 private static final int ORDER_SAVED = 2; 47 48 private PreferenceCategory mSavedPrintersCategory; 49 private Preference mAddPrinterByIpPreference; 50 private BuiltInPrintService mPrintService; 51 52 @Override onCreate(Bundle in)53 public void onCreate(Bundle in) { 54 if (DEBUG) Log.d(TAG, "onCreate"); 55 super.onCreate(in); 56 addPreferencesFromResource(R.xml.add_printers_prefs); 57 mAddPrinterByIpPreference = getPreferenceScreen().findPreference(KEY_ADD_BY_IP); 58 59 Preference findP2pPrintersPreference = getPreferenceScreen().findPreference( 60 KEY_FIND_WIFI_DIRECT); 61 findP2pPrintersPreference.setOnPreferenceClickListener(preference -> { 62 getFragmentManager().beginTransaction() 63 .replace(android.R.id.content, new FindP2pPrintersFragment()) 64 .addToBackStack(null) 65 .commit(); 66 return true; 67 }); 68 69 mSavedPrintersCategory = (PreferenceCategory) getPreferenceScreen() 70 .findPreference(KEY_SAVED_PRINTERS); 71 } 72 73 @Override onStart()74 public void onStart() { 75 super.onStart(); 76 if (DEBUG) Log.d(TAG, "onStart"); 77 78 getActivity().setTitle(R.string.title_activity_add_printer); 79 getContext().bindService(new Intent(getContext(), BuiltInPrintService.class), this, 80 Context.BIND_AUTO_CREATE); 81 } 82 83 @Override onStop()84 public void onStop() { 85 super.onStop(); 86 if (DEBUG) Log.d(TAG, "onStop"); 87 88 getContext().unbindService(this); 89 } 90 91 @Override onServiceConnected(ComponentName componentName, IBinder iBinder)92 public void onServiceConnected(ComponentName componentName, IBinder iBinder) { 93 if (DEBUG) Log.d(TAG, "onServiceConnected"); 94 mPrintService = BuiltInPrintService.getInstance(); 95 96 mAddPrinterByIpPreference.setOnPreferenceClickListener(preference -> { 97 AlertDialog dialog = new AddManualPrinterDialog(getActivity(), 98 mPrintService.getManualDiscovery()); 99 dialog.setOnDismissListener(d -> updateSavedPrinters()); 100 dialog.show(); 101 return true; 102 }); 103 104 updateSavedPrinters(); 105 } 106 107 @Override onServiceDisconnected(ComponentName componentName)108 public void onServiceDisconnected(ComponentName componentName) { 109 mPrintService = null; 110 } 111 updateSavedPrinters()112 private void updateSavedPrinters() { 113 int savedCount = mPrintService.getDiscovery().getSavedPrinters().size(); 114 115 if (savedCount == 0) { 116 if (getPreferenceScreen().findPreference(mSavedPrintersCategory.getKey()) != null) { 117 getPreferenceScreen().removePreference(mSavedPrintersCategory); 118 } 119 } else { 120 if (getPreferenceScreen().findPreference(mSavedPrintersCategory.getKey()) == null) { 121 getPreferenceScreen().addPreference(mSavedPrintersCategory); 122 } 123 124 mSavedPrintersCategory.removeAll(); 125 126 // With the service enumerate all saved printers 127 for (DiscoveredPrinter printer : mPrintService.getDiscovery().getSavedPrinters()) { 128 if (DEBUG) Log.d(TAG, "Adding saved printer " + printer); 129 PrinterPreference pref = new PrinterPreference(getContext(), mPrintService, 130 printer, false); 131 pref.setOrder(ORDER_SAVED); 132 pref.setOnPreferenceClickListener(preference -> { 133 showRemovalDialog(printer); 134 return true; 135 }); 136 mSavedPrintersCategory.addPreference(pref); 137 } 138 } 139 } 140 showRemovalDialog(DiscoveredPrinter printer)141 private void showRemovalDialog(DiscoveredPrinter printer) { 142 String message; 143 if (P2pUtils.isP2p(printer)) { 144 message = mPrintService.getString(R.string.connects_via_wifi_direct); 145 } else { 146 message = mPrintService.getString(R.string.connects_via_network, printer.path); 147 } 148 new AlertDialog.Builder(getContext()) 149 .setTitle(printer.name) 150 .setMessage(message) 151 .setNegativeButton(android.R.string.cancel, null) 152 .setPositiveButton(R.string.forget, (dialog, which) -> { 153 mPrintService.getDiscovery().removeSavedPrinter(printer.path); 154 updateSavedPrinters(); 155 }).show(); 156 } 157 } 158