| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.bips.ui; |
| |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.net.Uri; |
| import android.net.wifi.p2p.WifiP2pDevice; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.preference.Preference; |
| import android.preference.PreferenceCategory; |
| import android.preference.PreferenceFragment; |
| import android.util.Log; |
| |
| import com.android.bips.BuiltInPrintService; |
| import com.android.bips.R; |
| import com.android.bips.discovery.DiscoveredPrinter; |
| import com.android.bips.discovery.P2pDiscovery; |
| import com.android.bips.p2p.P2pMonitor; |
| import com.android.bips.p2p.P2pPeerListener; |
| |
| /** |
| * Present a list of previously-saved printers, and allow them to be removed |
| */ |
| public class FindP2pPrintersFragment extends PreferenceFragment implements ServiceConnection { |
| private static final String TAG = FindP2pPrintersFragment.class.getSimpleName(); |
| private static final boolean DEBUG = false; |
| |
| private static final String KEY_AVAILABLE = "available"; |
| |
| private BuiltInPrintService mPrintService; |
| private P2pListener mPeerDiscoveryListener; |
| private PreferenceCategory mAvailableCategory; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| addPreferencesFromResource(R.xml.find_p2p_prefs); |
| mAvailableCategory = (PreferenceCategory) getPreferenceScreen() |
| .findPreference(KEY_AVAILABLE); |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| if (DEBUG) Log.d(TAG, "onStart"); |
| getActivity().setTitle(R.string.wifi_direct_printers); |
| getContext().bindService(new Intent(getContext(), BuiltInPrintService.class), this, |
| Context.BIND_AUTO_CREATE); |
| } |
| |
| @Override |
| public void onStop() { |
| super.onStop(); |
| if (DEBUG) Log.d(TAG, "onStop"); |
| if (mPeerDiscoveryListener != null) { |
| mPrintService.getP2pMonitor().stopDiscover(mPeerDiscoveryListener); |
| mPeerDiscoveryListener = null; |
| } |
| getContext().unbindService(this); |
| mPrintService = null; |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName componentName, IBinder iBinder) { |
| if (DEBUG) Log.d(TAG, "onServiceConnected"); |
| mPrintService = BuiltInPrintService.getInstance(); |
| if (mPrintService == null) { |
| return; |
| } |
| |
| if (mPeerDiscoveryListener == null) { |
| mPeerDiscoveryListener = new P2pListener(); |
| mPrintService.getP2pMonitor().discover(mPeerDiscoveryListener); |
| } |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName componentName) { |
| mPrintService = null; |
| } |
| |
| /** Handle discovered P2P printers */ |
| private class P2pListener implements P2pPeerListener { |
| @Override |
| public void onPeerFound(WifiP2pDevice peer) { |
| if (DEBUG) Log.d(TAG, "onPeerFound: " + P2pMonitor.toString(peer)); |
| if (mPrintService == null) { |
| return; |
| } |
| |
| DiscoveredPrinter printer = P2pDiscovery.toPrinter(peer); |
| |
| // Ignore printers we have already added |
| for (DiscoveredPrinter prior : mPrintService.getP2pDiscovery().getSavedPrinters()) { |
| if (prior.path.equals(printer.path)) { |
| return; |
| } |
| } |
| |
| // Install a preference so the user can add this printer |
| PrinterPreference pref = getPrinterPreference(printer.getUri()); |
| if (pref != null) { |
| pref.updatePrinter(printer); |
| } else { |
| pref = new PrinterPreference(getContext(), mPrintService, printer, true); |
| pref.setOnPreferenceClickListener(preference -> { |
| if (DEBUG) Log.d(TAG, "add " + P2pDiscovery.toPrinter(peer)); |
| new AddP2pPrinterDialog(FindP2pPrintersFragment.this, mPrintService, peer) |
| .show(); |
| return true; |
| }); |
| mAvailableCategory.addPreference(pref); |
| } |
| } |
| |
| @Override |
| public void onPeerLost(WifiP2pDevice peer) { |
| if (DEBUG) Log.d(TAG, "onPeerLost: " + P2pMonitor.toString(peer)); |
| if (mPrintService == null) { |
| return; |
| } |
| |
| DiscoveredPrinter printer = P2pDiscovery.toPrinter(peer); |
| |
| // Remove this preference because the printer is no longer available |
| PrinterPreference pref = getPrinterPreference(printer.path); |
| if (pref != null) { |
| mAvailableCategory.removePreference(pref); |
| } |
| } |
| |
| private PrinterPreference getPrinterPreference(Uri printerPath) { |
| for (int i = 0; i < mAvailableCategory.getPreferenceCount(); i++) { |
| Preference pref = mAvailableCategory.getPreference(i); |
| if (pref instanceof PrinterPreference |
| && ((PrinterPreference) pref).getPrinter().path.equals(printerPath)) { |
| return (PrinterPreference) pref; |
| } |
| } |
| return null; |
| } |
| } |
| } |