1 /*
2  * Copyright (C) 2019 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.ActionBar;
20 import android.app.Activity;
21 import android.app.FragmentManager;
22 import android.content.ComponentName;
23 import android.content.Context;
24 import android.content.Intent;
25 import android.content.ServiceConnection;
26 import android.os.Bundle;
27 import android.os.IBinder;
28 import android.print.PrintJobInfo;
29 import android.print.PrinterId;
30 import android.printservice.PrintService;
31 import android.util.Log;
32 import android.view.MenuItem;
33 
34 import com.android.bips.BuiltInPrintService;
35 import com.android.bips.discovery.DiscoveredPrinter;
36 import com.android.bips.discovery.Discovery;
37 
38 import java.net.InetAddress;
39 import java.net.UnknownHostException;
40 
41 /**
42  * Launched by system in response to a "More Options" request while tracking a printer.
43  */
44 public class MoreOptionsActivity extends Activity implements ServiceConnection, Discovery.Listener {
45     private static final String TAG = MoreOptionsActivity.class.getSimpleName();
46     private static final boolean DEBUG = false;
47 
48     private BuiltInPrintService mPrintService;
49     PrinterId mPrinterId;
50     DiscoveredPrinter mPrinter;
51     InetAddress mPrinterAddress;
52 
53     public static final String EXTRA_PRINTER_ID = "EXTRA_PRINTER_ID";
54 
55     @Override
onCreate(Bundle savedInstanceState)56     protected void onCreate(Bundle savedInstanceState) {
57         super.onCreate(savedInstanceState);
58         if (getIntent().hasExtra(PrintService.EXTRA_PRINT_JOB_INFO)) {
59             PrintJobInfo jobInfo =
60                     getIntent().getParcelableExtra(PrintService.EXTRA_PRINT_JOB_INFO);
61             mPrinterId = jobInfo.getPrinterId();
62         } else if (getIntent().hasExtra(EXTRA_PRINTER_ID)) {
63             mPrinterId = getIntent().getParcelableExtra(EXTRA_PRINTER_ID);
64         } else {
65             if (DEBUG) Log.i(TAG, "No job info or printer info to show. Exiting.");
66             finish();
67             return;
68         }
69         ActionBar actionBar = getActionBar();
70         if (actionBar != null) {
71             actionBar.setDisplayHomeAsUpEnabled(true);
72         }
73         getFragmentManager().popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);
74     }
75 
76     @Override
onOptionsItemSelected(MenuItem item)77     public boolean onOptionsItemSelected(MenuItem item) {
78         switch (item.getItemId()) {
79             case android.R.id.home:
80                 onBackPressed();
81                 return true;
82         }
83         return super.onOptionsItemSelected(item);
84     }
85 
86     @Override
onStart()87     protected void onStart() {
88         super.onStart();
89         bindService(new Intent(this, BuiltInPrintService.class), this,
90                 Context.BIND_AUTO_CREATE);
91     }
92 
93     @Override
onStop()94     protected void onStop() {
95         super.onStop();
96         if (mPrintService != null) {
97             mPrintService.getDiscovery().stop(this);
98         }
99         unbindService(this);
100     }
101 
102     @Override
onServiceConnected(ComponentName name, IBinder service)103     public void onServiceConnected(ComponentName name, IBinder service) {
104         mPrintService = BuiltInPrintService.getInstance();
105         mPrintService.getDiscovery().start(this);
106     }
107 
108     @Override
onServiceDisconnected(ComponentName name)109     public void onServiceDisconnected(ComponentName name) {
110         mPrintService = null;
111     }
112 
113     @Override
onPrinterFound(DiscoveredPrinter printer)114     public void onPrinterFound(DiscoveredPrinter printer) {
115         if (printer.getUri().toString().equals(mPrinterId.getLocalId())) {
116             // We discovered a printer matching the job's PrinterId, so show recommendations
117             mPrinter = printer;
118             setTitle(mPrinter.name);
119             try {
120                 mPrinterAddress = InetAddress.getByName(mPrinter.path.getHost());
121                 if (getFragmentManager().getFragments().isEmpty()) {
122                     MoreOptionsFragment fragment = new MoreOptionsFragment();
123                     getFragmentManager().beginTransaction()
124                             .replace(android.R.id.content, fragment)
125                             .commit();
126                 }
127                 // No need for continued discovery after we find the printer.
128                 mPrintService.getDiscovery().stop(this);
129             } catch (UnknownHostException ignored) { }
130         }
131     }
132 
133     @Override
onPrinterLost(DiscoveredPrinter printer)134     public void onPrinterLost(DiscoveredPrinter printer) {
135         // Ignore
136     }
137 }
138