git.gag.com Git - fw/altos/blob - altosui/AltosBTKnown.java

   1 /*
   2  * Copyright © 2011 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package altosui;
  19 import java.lang.*;
  20 import java.util.*;
  21 import libaltosJNI.*;
  22 import java.util.prefs.*;
  23
  24 public class AltosBTKnown implements Iterable<AltosBTDevice> {
  25         LinkedList<AltosBTDevice>       devices = new LinkedList<AltosBTDevice>();
  26         Preferences                     bt_pref = AltosPreferences.bt_devices();
  27
  28         private String get_address(String name) {
  29                 return bt_pref.get(name, "");
  30         }
  31
  32         private void set_address(String name, String addr) {
  33                 bt_pref.put(name, addr);
  34                 System.out.printf("saving known %s %s\n", name, addr);
  35         }
  36
  37         private void remove(String name) {
  38                 bt_pref.remove(name);
  39         }
  40
  41         private void load() {
  42                 try {
  43                         String[] names = bt_pref.keys();
  44                         for (int i = 0; i < names.length; i++) {
  45                                 String  name = names[i];
  46                                 String  addr = get_address(name);
  47                                 System.out.printf("Known device %s %s\n", name, addr);
  48                                 devices.add(new AltosBTDevice(name, addr));
  49                         }
  50                 } catch (BackingStoreException be) {
  51                 } catch (IllegalStateException ie) {
  52                 }
  53         }
  54
  55         public Iterator<AltosBTDevice> iterator() {
  56                 return devices.iterator();
  57         }
  58
  59         private void flush() {
  60                 AltosPreferences.flush_preferences();
  61         }
  62
  63         public void set(Iterable<AltosBTDevice> new_devices) {
  64                 for (AltosBTDevice old : devices) {
  65                         boolean found = false;
  66                         for (AltosBTDevice new_device : new_devices) {
  67                                 if (new_device.equals(old)) {
  68                                         found = true;
  69                                         break;
  70                                 }
  71                         }
  72                         if (!found)
  73                                 remove(old.getName());
  74                 }
  75                 devices = new LinkedList<AltosBTDevice>();
  76                 for (AltosBTDevice new_device : new_devices) {
  77                         devices.add(new_device);
  78                         set_address(new_device.getName(), new_device.getAddr());
  79                 }
  80                 flush();
  81         }
  82
  83         public List<AltosDevice> list(int product) {
  84                 LinkedList<AltosDevice> list = new LinkedList<AltosDevice>();
  85                 for (AltosBTDevice device : devices) {
  86                         if (device.matchProduct(product))
  87                                 list.add(device);
  88                 }
  89                 return list;
  90         }
  91
  92         public AltosBTKnown() {
  93                 devices = new LinkedList<AltosBTDevice>();
  94                 bt_pref = AltosPreferences.bt_devices();
  95                 load();
  96         }
  97 }