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   1 /*
   2  * Copyright © 2012 Mike Beattie <mike@ethernal.org>
   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 org.altusmetrum.AltosDroid;
  19
  20 import java.lang.ref.WeakReference;
  21 import android.app.Activity;
  22 import android.bluetooth.BluetoothAdapter;
  23 import android.bluetooth.BluetoothDevice;
  24 import android.content.Intent;
  25 import android.content.Context;
  26 import android.content.ComponentName;
  27 import android.content.ServiceConnection;
  28 import android.os.IBinder;
  29 import android.os.Bundle;
  30 import android.os.Handler;
  31 import android.os.Message;
  32 import android.os.Messenger;
  33 import android.os.RemoteException;
  34 import android.text.method.ScrollingMovementMethod;
  35 import android.util.Log;
  36 //import android.view.KeyEvent;
  37 import android.view.Menu;
  38 import android.view.MenuInflater;
  39 import android.view.MenuItem;
  40 //import android.view.View;
  41 import android.view.Window;
  42 //import android.view.View.OnClickListener;
  43 //import android.view.inputmethod.EditorInfo;
  44 //import android.widget.Button;
  45 //import android.widget.EditText;
  46 import android.widget.TextView;
  47 import android.widget.Toast;
  48 import org.altusmetrum.AltosDroid.R;
  49
  50 /**
  51  * This is the main Activity that displays the current chat session.
  52  */
  53 public class AltosDroid extends Activity {
  54         // Debugging
  55         private static final String TAG = "AltosDroid";
  56         private static final boolean D = true;
  57
  58         // Message types sent from the TelemetryService Handler
  59         public static final int MSG_STATE_CHANGE    = 1;
  60         public static final int MSG_DEVNAME         = 2;
  61         public static final int MSG_INCOMING_TELEM  = 3;
  62         public static final int MSG_TOAST           = 4;
  63
  64         // Key names received from the TelemetryService Handler
  65         public static final String KEY_DEVNAME = "key_devname";
  66         public static final String KEY_TOAST   = "key_toast";
  67
  68         // Intent request codes
  69         private static final int REQUEST_CONNECT_DEVICE = 1;
  70         private static final int REQUEST_ENABLE_BT      = 2;
  71
  72         // Layout Views
  73         private TextView mTitle;
  74         private TextView mSerialView;
  75         //private EditText mOutEditText;
  76         //private Button mSendButton;
  77
  78         private boolean mIsBound;
  79         Messenger mService = null;
  80         final Messenger mMessenger = new Messenger(new IncomingHandler());
  81
  82         // Name of the connected device
  83         private String mConnectedDeviceName = null;
  84         // Local Bluetooth adapter
  85         private BluetoothAdapter mBluetoothAdapter = null;
  86
  87
  88         // The Handler that gets information back from the Telemetry Service
  89         static class IncomingHandler extends Handler {
  90                 private final WeakReference<AltosDroid> mAltosDroid;
  91                 IncomingHandler(AltosDroid ad) { mAltosDroid = new WeakReference<AltosDroid>(ad); }
  92
  93                 @Override
  94                 public void handleMessage(Message msg) {
  95                         AltosDroid ad = mAltosDroid.get();
  96                         switch (msg.what) {
  97                         case MSG_STATE_CHANGE:
  98                                 if(D) Log.i(TAG, "MSG_STATE_CHANGE: " + msg.arg1);
  99                                 switch (msg.arg1) {
 100                                 case TelemetryService.STATE_CONNECTED:
 101                                         ad.mTitle.setText(R.string.title_connected_to);
 102                                         ad.mTitle.append(ad.mConnectedDeviceName);
 103                                         ad.mSerialView.setText("");
 104                                         break;
 105                                 case TelemetryService.STATE_CONNECTING:
 106                                         ad.mTitle.setText(R.string.title_connecting);
 107                                         break;
 108                                 case TelemetryService.STATE_READY:
 109                                 case TelemetryService.STATE_NONE:
 110                                         ad.mTitle.setText(R.string.title_not_connected);
 111                                         break;
 112                                 }
 113                                 break;
 114                         case MSG_INCOMING_TELEM:
 115                                 byte[] buf = (byte[]) msg.obj;
 116                                 // construct a string from the buffer
 117                                 String telem = new String(buf);
 118                                 ad.mSerialView.append(telem);
 119                                 break;
 120                         case MSG_DEVNAME:
 121                                 // save the connected device's name
 122                                 ad.mConnectedDeviceName = msg.getData().getString(KEY_DEVNAME);
 123                                 Toast.makeText(ad.getApplicationContext(), "Connected to "
 124                                                         + ad.mConnectedDeviceName, Toast.LENGTH_SHORT).show();
 125                                 break;
 126                         case MSG_TOAST:
 127                                 Toast.makeText(
 128                                                 ad.getApplicationContext(),
 129                                                 msg.getData().getString(KEY_TOAST),
 130                                                 Toast.LENGTH_SHORT).show();
 131                                 break;
 132                         }
 133                 }
 134         };
 135
 136
 137         private ServiceConnection mConnection = new ServiceConnection() {
 138                 public void onServiceConnected(ComponentName className, IBinder service) {
 139                         mService = new Messenger(service);
 140                         try {
 141                                 Message msg = Message.obtain(null, TelemetryService.MSG_REGISTER_CLIENT);
 142                                 msg.replyTo = mMessenger;
 143                                 mService.send(msg);
 144                         } catch (RemoteException e) {
 145                                 // In this case the service has crashed before we could even do anything with it
 146                         }
 147                 }
 148
 149                 public void onServiceDisconnected(ComponentName className) {
 150                         // This is called when the connection with the service has been unexpectedly disconnected - process crashed.
 151                         mService = null;
 152                 }
 153         };
 154
 155
 156         @Override
 157         public void onCreate(Bundle savedInstanceState) {
 158                 super.onCreate(savedInstanceState);
 159                 if(D) Log.e(TAG, "+++ ON CREATE +++");
 160
 161                 // Set up the window layout
 162                 requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
 163                 setContentView(R.layout.main);
 164                 getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
 165
 166                 // Set up the custom title
 167                 mTitle = (TextView) findViewById(R.id.title_left_text);
 168                 mTitle.setText(R.string.app_name);
 169                 mTitle = (TextView) findViewById(R.id.title_right_text);
 170
 171                 mSerialView = (TextView) findViewById(R.id.in);
 172                 mSerialView.setMovementMethod(new ScrollingMovementMethod());
 173                 mSerialView.setClickable(false);
 174                 mSerialView.setLongClickable(false);
 175
 176                 // Get local Bluetooth adapter
 177                 mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
 178
 179                 // If the adapter is null, then Bluetooth is not supported
 180                 if (mBluetoothAdapter == null) {
 181                         Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
 182                         finish();
 183                         return;
 184                 }
 185
 186                 // Start Telemetry Service
 187                 startService(new Intent(AltosDroid.this, TelemetryService.class));
 188
 189                 doBindService();
 190         }
 191
 192         @Override
 193         public void onStart() {
 194                 super.onStart();
 195                 if(D) Log.e(TAG, "++ ON START ++");
 196
 197                 if (!mBluetoothAdapter.isEnabled()) {
 198                         Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
 199                         startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
 200                 } else {
 201                         //if (mChatService == null) setupChat();
 202                 }
 203         }
 204
 205         @Override
 206         public synchronized void onResume() {
 207                 super.onResume();
 208                 if(D) Log.e(TAG, "+ ON RESUME +");
 209
 210                 // Performing this check in onResume() covers the case in which BT was
 211                 // not enabled during onStart(), so we were paused to enable it...
 212                 // onResume() will be called when ACTION_REQUEST_ENABLE activity returns.
 213                 //if (mChatService != null) {
 214                         // Only if the state is STATE_NONE, do we know that we haven't started already
 215                         //if (mChatService.getState() == BluetoothChatService.STATE_NONE) {
 216                         // Start the Bluetooth chat services
 217                         //mChatService.start();
 218                         //}
 219                 //}
 220         }
 221
 222         @Override
 223         public synchronized void onPause() {
 224                 super.onPause();
 225                 if(D) Log.e(TAG, "- ON PAUSE -");
 226         }
 227
 228         @Override
 229         public void onStop() {
 230                 super.onStop();
 231                 if(D) Log.e(TAG, "-- ON STOP --");
 232         }
 233
 234         @Override
 235         public void onDestroy() {
 236                 super.onDestroy();
 237
 238                 doUnbindService();
 239
 240                 if(D) Log.e(TAG, "--- ON DESTROY ---");
 241         }
 242
 243
 244
 245 /*
 246         private void setupChat() {
 247                 Log.d(TAG, "setupChat()");
 248
 249                 // Initialize the compose field with a listener for the return key
 250                 mOutEditText = (EditText) findViewById(R.id.edit_text_out);
 251                 mOutEditText.setOnEditorActionListener(mWriteListener);
 252
 253                 // Initialize the send button with a listener that for click events
 254                 mSendButton = (Button) findViewById(R.id.button_send);
 255                 mSendButton.setOnClickListener(new OnClickListener() {
 256                         public void onClick(View v) {
 257                                 // Send a message using content of the edit text widget
 258                                 TextView view = (TextView) findViewById(R.id.edit_text_out);
 259                                 String message = view.getText().toString();
 260                                 sendMessage(message);
 261                         }
 262                 });
 263
 264                 // Initialize the BluetoothChatService to perform bluetooth connections
 265                 mChatService = new BluetoothChatService(this, mHandler);
 266
 267                 // Initialize the buffer for outgoing messages
 268                 mOutStringBuffer = new StringBuffer("");
 269         }
 270 */
 271
 272         /**
 273          * Sends a message.
 274          * @param message  A string of text to send.
 275          */
 276         /*
 277         private void sendMessage(String message) {
 278                 // Check that we're actually connected before trying anything
 279                 if (mChatService.getState() != BluetoothChatService.STATE_CONNECTED) {
 280                         Toast.makeText(this, R.string.not_connected, Toast.LENGTH_SHORT).show();
 281                         return;
 282                 }
 283
 284                 // Check that there's actually something to send
 285                 if (message.length() > 0) {
 286                         // Get the message bytes and tell the BluetoothChatService to write
 287                         byte[] send = message.getBytes();
 288                         mChatService.write(send);
 289
 290                         // Reset out string buffer to zero and clear the edit text field
 291                         mOutStringBuffer.setLength(0);
 292                         mOutEditText.setText(mOutStringBuffer);
 293                 }
 294         }
 295
 296
 297         // The action listener for the EditText widget, to listen for the return key
 298         private TextView.OnEditorActionListener mWriteListener =
 299                 new TextView.OnEditorActionListener() {
 300                 public boolean onEditorAction(TextView view, int actionId, KeyEvent event) {
 301                         // If the action is a key-up event on the return key, send the message
 302                         if (actionId == EditorInfo.IME_NULL && event.getAction() == KeyEvent.ACTION_UP) {
 303                                 String message = view.getText().toString();
 304                                 sendMessage(message);
 305                         }
 306                         if(D) Log.i(TAG, "END onEditorAction");
 307                         return true;
 308                 }
 309         };
 310         */
 311
 312         public void onActivityResult(int requestCode, int resultCode, Intent data) {
 313                 if(D) Log.d(TAG, "onActivityResult " + resultCode);
 314                 switch (requestCode) {
 315                 case REQUEST_CONNECT_DEVICE:
 316                         // When DeviceListActivity returns with a device to connect to
 317                         if (resultCode == Activity.RESULT_OK) {
 318                                 connectDevice(data);
 319                         }
 320                         break;
 321                 case REQUEST_ENABLE_BT:
 322                         // When the request to enable Bluetooth returns
 323                         if (resultCode == Activity.RESULT_OK) {
 324                                 // Bluetooth is now enabled, so set up a chat session
 325                                 //setupChat();
 326                         } else {
 327                                 // User did not enable Bluetooth or an error occured
 328                                 Log.d(TAG, "BT not enabled");
 329                                 stopService(new Intent(AltosDroid.this, TelemetryService.class));
 330                                 Toast.makeText(this, R.string.bt_not_enabled, Toast.LENGTH_SHORT).show();
 331                                 finish();
 332                         }
 333                 }
 334         }
 335
 336         private void connectDevice(Intent data) {
 337                 // Get the device MAC address
 338                 String address = data.getExtras().getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
 339                 // Get the BLuetoothDevice object
 340                 BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
 341                 // Attempt to connect to the device
 342                 try {
 343                         //Message msg = Message.obtain(null, TelemetryService.MSG_CONNECT_TELEBT);
 344                         //msg.obj = device;
 345                         //mService.send(msg);
 346                         mService.send(Message.obtain(null, TelemetryService.MSG_CONNECT, device));
 347                 } catch (RemoteException e) {
 348                         e.printStackTrace();
 349                 }
 350         }
 351
 352
 353         @Override
 354         public boolean onCreateOptionsMenu(Menu menu) {
 355                 MenuInflater inflater = getMenuInflater();
 356                 inflater.inflate(R.menu.option_menu, menu);
 357                 return true;
 358         }
 359
 360         @Override
 361         public boolean onOptionsItemSelected(MenuItem item) {
 362                 Intent serverIntent = null;
 363                 switch (item.getItemId()) {
 364                 case R.id.connect_scan:
 365                         // Launch the DeviceListActivity to see devices and do scan
 366                         serverIntent = new Intent(this, DeviceListActivity.class);
 367                         startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE);
 368                         return true;
 369                 }
 370                 return false;
 371         }
 372
 373
 374         void doBindService() {
 375                 bindService(new Intent(this, TelemetryService.class), mConnection, Context.BIND_AUTO_CREATE);
 376                 mIsBound = true;
 377         }
 378
 379         void doUnbindService() {
 380                 if (mIsBound) {
 381                         // If we have received the service, and hence registered with it, then now is the time to unregister.
 382                         if (mService != null) {
 383                                 try {
 384                                         Message msg = Message.obtain(null, TelemetryService.MSG_UNREGISTER_CLIENT);
 385                                         msg.replyTo = mMessenger;
 386                                         mService.send(msg);
 387                                 } catch (RemoteException e) {
 388                                         // There is nothing special we need to do if the service has crashed.
 389                                 }
 390                         }
 391                         // Detach our existing connection.
 392                         unbindService(mConnection);
 393                         mIsBound = false;
 394                 }
 395         }
 396
 397 }