Mercurial > 510Connectbot
annotate src/com/five_ten_sg/connectbot/service/TerminalMonitor.java @ 153:3ca280646f2d
allow zero length setfield
| author | Carl Byington <carl@five-ten-sg.com> |
|---|---|
| date | Mon, 23 Jun 2014 11:18:02 -0700 |
| parents | 69333ca1563c |
| children | 156b53fc4815 |
| rev | line source |
|---|---|
| 0 | 1 package com.five_ten_sg.connectbot.service; |
| 2 | |
| 3 import android.content.ComponentName; | |
| 4 import android.content.Context; | |
| 5 import android.content.Intent; | |
| 6 import android.content.ServiceConnection; | |
| 7 import android.os.IBinder; | |
| 8 import android.util.Log; | |
| 9 import android.view.View; | |
| 10 import de.mud.terminal.vt320; | |
| 11 import java.io.IOException; | |
| 12 import java.io.InputStream; | |
| 13 import java.io.OutputStream; | |
| 14 import java.net.InetAddress; | |
| 15 import java.net.Socket; | |
| 16 import java.nio.charset.Charset; | |
| 17 import java.util.HashMap; | |
|
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18 import java.util.concurrent.ArrayBlockingQueue; |
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19 import java.util.concurrent.BlockingQueue; |
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20 import java.util.concurrent.ConcurrentHashMap; |
| 0 | 21 |
| 22 public class TerminalMonitor { | |
| 23 public final static String TAG = "ConnectBot.TerminalMonitor"; | |
| 24 | |
| 25 public static final char MONITOR_CMD_INIT = 0; | |
| 26 public static final char MONITOR_CMD_ACTIVATE = 1; | |
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27 public static final char MONITOR_CMD_KEYSTATE = 2; |
| 0 | 28 public static final char MONITOR_CMD_CURSORMOVE = 3; |
| 29 public static final char MONITOR_CMD_SCREENCHANGE = 4; | |
| 30 public static final char MONITOR_CMD_FIELDVALUE = 5; | |
| 31 public static final char MONITOR_CMD_SETFIELD = 5; | |
| 32 public static final char MONITOR_CMD_GETFIELD = 6; | |
| 33 public static final char MONITOR_CMD_SCREENWATCH = 7; | |
| 34 public static final char MONITOR_CMD_DEPRESS = 8; | |
| 35 | |
| 36 private static final int MONITORPORT = 6000; | |
| 37 private static final String LOCALHOST = "127.0.0.1"; | |
| 38 | |
| 39 private Context parent = null; | |
| 40 private vt320 buffer = null; | |
| 41 private View view = null; | |
| 42 private String init = null; | |
| 43 private int start_line = 0; // monitor part of the screen for changes | |
| 44 private int end_line = 500; // "" | |
| 45 private int start_column = 0; // "" | |
| 46 private int end_column = 500; // "" | |
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47 private boolean modified = false; // used to delay screen change notifications |
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48 private boolean moved = false; // used to delay cursor moved notifications |
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49 private int to_line = 0; // "" |
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50 private int to_column = 0; // "" |
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51 private HashMap<Integer, Integer> keymap = null; // map MS VK_ keys to vt320 virtual keys |
| 0 | 52 private IBinder bound = null; |
| 53 private Socket monitor_socket = null; | |
| 54 private InputStream monitor_in = null; | |
| 55 private OutputStream monitor_out = null; | |
| 56 private MyReader monitor_reader = null; | |
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57 private BlockingQueue<char[]> pending_commands = new ArrayBlockingQueue<char[]>(100); |
| 0 | 58 private MyServiceConnection monitor_connection = new MyServiceConnection(); |
| 59 | |
| 60 class MyReader extends Thread { | |
| 61 private InputStream monitor_in; | |
| 62 private byte[] b; | |
| 63 private boolean is_closing = false; | |
| 64 | |
| 65 public MyReader(InputStream monitor_in) { | |
| 66 this.monitor_in = monitor_in; | |
| 67 b = new byte[100]; | |
| 68 Log.i(TAG, "MyReader constructor"); | |
| 69 } | |
| 70 | |
| 71 public void closing() { | |
| 72 is_closing = true; | |
| 73 } | |
| 74 | |
| 75 private char[] forceRead(int len) throws IOException { | |
| 76 int len2 = len * 2; | |
| 77 int off = 0; | |
| 78 | |
| 79 if (b.length < len2) b = new byte[len2]; | |
| 80 | |
| 81 while (off < len2) { | |
| 82 int l = monitor_in.read(b, off, len2 - off); | |
| 83 | |
| 84 if (l < 0) throw new IOException("eof"); | |
| 85 | |
| 86 off += l; | |
| 87 } | |
| 88 | |
| 89 return bytesToChars(b, len2); | |
| 90 } | |
| 91 | |
| 92 public void run() { | |
| 93 while (true) { | |
| 94 try { | |
| 95 char[] len = forceRead(1); | |
| 96 char[] packet = forceRead(len[0]); | |
| 97 char cmd = packet[0]; | |
| 98 Log.i(TAG, String.format("received %d command", (int)cmd)); | |
| 99 | |
| 100 switch (cmd) { | |
| 101 case MONITOR_CMD_SETFIELD: | |
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102 if (packet.length >= 3) |
| 0 | 103 setField(packet[1], packet[2], packet, 3); |
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104 |
| 0 | 105 break; |
| 106 | |
| 107 case MONITOR_CMD_GETFIELD: | |
| 108 if (packet.length == 4) | |
| 109 getField(packet[1], packet[2], packet[3]); | |
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110 |
| 0 | 111 break; |
| 112 | |
| 113 case MONITOR_CMD_SCREENWATCH: | |
| 114 if (packet.length == 4) | |
| 115 screenWatch(packet[1], packet[2], packet[3]); | |
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116 |
| 0 | 117 break; |
| 118 | |
| 119 case MONITOR_CMD_DEPRESS: | |
| 120 if (packet.length == 2) | |
| 121 depress(packet[1]); | |
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122 |
| 0 | 123 break; |
| 124 | |
| 125 default: | |
| 126 break; | |
| 127 } | |
| 128 } | |
| 129 catch (IOException e) { | |
| 130 if (!is_closing) Log.e(TAG, "exception in MyReader.run()", e); | |
| 131 | |
| 132 break; | |
| 133 } | |
| 134 } | |
| 135 } | |
| 136 } | |
| 137 | |
| 138 class MyServiceConnection implements ServiceConnection { | |
| 139 public void onServiceConnected(ComponentName className, IBinder service) { | |
| 140 bound = service; | |
| 141 Log.i(TAG, "bound to service"); | |
| 142 | |
| 143 try { | |
| 144 InetAddress serverAddr = InetAddress.getByName(LOCALHOST); | |
| 145 monitor_socket = new Socket(serverAddr, MONITORPORT); | |
| 146 monitor_in = monitor_socket.getInputStream(); | |
| 147 monitor_out = monitor_socket.getOutputStream(); | |
| 148 Log.i(TAG, "connected to monitor socket, send init " + init); | |
| 149 monitor_reader = new MyReader(monitor_in); | |
| 150 monitor_reader.start(); | |
| 151 String x = " " + init; | |
| 152 monitorWrite(MONITOR_CMD_INIT, x.toCharArray()); | |
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153 char [] c; |
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154 |
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155 while (true) { |
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156 c = pending_commands.poll(); |
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157 |
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158 if (c == null) break; |
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159 |
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160 monitorWrite(c[1], c); |
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161 } |
| 0 | 162 } |
| 163 catch (IOException e) { | |
| 164 Log.e(TAG, "exception in onServiceConnected()", e); | |
| 165 } | |
| 166 } | |
| 167 public void onServiceDisconnected(ComponentName classNam) { | |
| 168 bound = null; | |
| 169 Log.i(TAG, "unbound from service"); | |
| 170 } | |
| 171 }; | |
| 172 | |
| 173 | |
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174 public TerminalMonitor(Context parent, vt320 buffer, View view, String init) { |
| 0 | 175 this.parent = parent; |
| 176 this.buffer = buffer; | |
| 177 this.view = view; | |
| 178 this.init = init; | |
| 179 // setup the windows->android keymapping | |
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180 // http://msdn.microsoft.com/en-us/library/windows/desktop/dd375731 |
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181 keymap = new HashMap<Integer, Integer>(); |
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182 keymap.put(0x08, vt320.KEY_BACK_SPACE); // vk_back |
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183 keymap.put(0x09, vt320.KEY_TAB); // vk_tab |
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184 keymap.put(0x0d, vt320.KEY_ENTER); // vk_return |
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185 keymap.put(0x1b, vt320.KEY_ESCAPE); // vk_escape |
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186 keymap.put(0x21, vt320.KEY_PAGE_UP); // vk_prior |
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187 keymap.put(0x22, vt320.KEY_PAGE_DOWN); // vk_next |
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188 keymap.put(0x23, vt320.KEY_END); // vk_end |
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189 keymap.put(0x24, vt320.KEY_HOME); // vk_home |
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190 keymap.put(0x25, vt320.KEY_LEFT); // vk_left |
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191 keymap.put(0x26, vt320.KEY_UP); // vk_up |
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192 keymap.put(0x27, vt320.KEY_RIGHT); // vk_right |
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193 keymap.put(0x28, vt320.KEY_DOWN); // vk_down |
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194 keymap.put(0x2d, vt320.KEY_INSERT); // vk_insert |
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195 keymap.put(0x2e, vt320.KEY_DELETE); // vk_delete |
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196 keymap.put(0x70, vt320.KEY_F1); // vk_f1 |
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197 keymap.put(0x71, vt320.KEY_F2); // vk_f2 |
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198 keymap.put(0x72, vt320.KEY_F3); // vk_f3 |
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199 keymap.put(0x73, vt320.KEY_F4); // vk_f4 |
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200 keymap.put(0x74, vt320.KEY_F5); // vk_f5 |
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201 keymap.put(0x75, vt320.KEY_F6); // vk_f6 |
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202 keymap.put(0x76, vt320.KEY_F7); // vk_f7 |
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203 keymap.put(0x77, vt320.KEY_F8); // vk_f8 |
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204 keymap.put(0x78, vt320.KEY_F9); // vk_f9 |
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205 keymap.put(0x79, vt320.KEY_F10); // vk_f10 |
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206 keymap.put(0x7a, vt320.KEY_F11); // vk_f11 |
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207 keymap.put(0x7b, vt320.KEY_F12); // vk_f12 |
| 0 | 208 // bind to the monitor service |
| 209 Intent intent = new Intent("com.five_ten_sg.connectbot.monitor.MonitorService"); | |
| 210 parent.bindService(intent, monitor_connection, Context.BIND_AUTO_CREATE); | |
| 211 Log.i(TAG, "constructor"); | |
| 212 } | |
| 213 | |
| 214 | |
| 215 public void Disconnect() { | |
| 216 if (monitor_reader != null) monitor_reader.closing(); | |
| 217 | |
| 218 try { | |
| 219 if (monitor_out != null) monitor_out.close(); | |
| 220 | |
| 221 if (monitor_in != null) monitor_in.close(); | |
| 222 | |
| 223 if (monitor_socket != null) monitor_socket.close(); | |
| 224 | |
| 225 Log.i(TAG, "disconnected from monitor socket"); | |
| 226 } | |
| 227 catch (IOException e) { | |
| 228 Log.e(TAG, "exception in Disconnect() closing sockets", e); | |
| 229 } | |
| 230 | |
| 231 monitor_reader = null; | |
| 232 monitor_out = null; | |
| 233 monitor_in = null; | |
| 234 monitor_socket = null; | |
| 235 | |
| 236 if (bound != null) parent.unbindService(monitor_connection); | |
| 237 | |
| 238 monitor_connection = null; | |
| 239 } | |
| 240 | |
| 241 | |
| 242 public char[] bytesToChars(byte[] b, int len) { | |
| 243 char[] c = new char[len >> 1]; | |
| 244 int bp = 0; | |
| 245 | |
| 246 for (int i = 0; i < c.length; i++) { | |
| 247 byte b1 = b[bp++]; | |
| 248 byte b2 = b[bp++]; | |
| 249 c[i] = (char)(((b1 & 0x00FF) << 8) + (b2 & 0x00FF)); | |
| 250 } | |
| 251 | |
| 252 return c; | |
| 253 } | |
| 254 | |
| 255 | |
| 256 public byte[] charsToBytes(char[] c) { | |
| 257 byte[] b = new byte[c.length << 1]; | |
| 258 int bp = 0; | |
| 259 | |
| 260 for (int i = 0; i < c.length; i++) { | |
| 261 b[bp++] = (byte)((c[i] & 0xff00) >> 8); | |
| 262 b[bp++] = (byte)(c[i] & 0x00ff); | |
| 263 } | |
| 264 | |
| 265 return b; | |
| 266 } | |
| 267 | |
| 268 | |
| 269 public synchronized void monitorWrite(char cmd, char[] c) { | |
| 270 try { | |
| 271 if (monitor_out != null) { | |
| 272 c[0] = (char)(c.length - 1); // number of chars following | |
| 273 c[1] = cmd; | |
| 274 //Log.i(TAG, String.format("sending %d command", (int)cmd)); | |
| 275 monitor_out.write(charsToBytes(c)); | |
| 276 } | |
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277 else { |
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278 c[1] = cmd; |
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279 pending_commands.put(c); |
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280 } |
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281 } |
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282 catch (InterruptedException e) { |
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283 Log.e(TAG, "exception in monitorWrite()", e); |
| 0 | 284 } |
| 285 catch (IOException e) { | |
| 286 Log.i(TAG, "exception in monitorWrite(), monitor died or closed the socket", e); | |
| 287 | |
| 288 try { | |
| 289 monitor_out.close(); | |
| 290 } | |
| 291 catch (IOException ee) { | |
| 292 Log.e(TAG, "exception in monitorWrite() closing output stream", ee); | |
| 293 } | |
| 294 | |
| 295 monitor_out = null; | |
| 296 } | |
| 297 }; | |
| 298 | |
| 299 public void sendScreen(char cmd) { | |
| 300 char lines = (char)(buffer.height & 0x0000ffff); | |
| 301 char columns = (char)(buffer.width & 0x0000ffff); | |
| 302 char[] arg = new char[4 + lines * columns]; | |
| 303 arg[2] = lines; | |
| 304 arg[3] = columns; | |
| 305 int base = 4; | |
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306 |
| 0 | 307 for (int i = 0; i < lines; i++) { |
| 308 System.arraycopy(buffer.charArray[buffer.screenBase + i], 0, arg, base, columns); | |
| 309 base += columns; | |
| 310 } | |
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311 |
| 0 | 312 monitorWrite(cmd, arg); |
| 313 } | |
| 314 | |
| 315 public synchronized void activate() { | |
| 316 sendScreen(MONITOR_CMD_ACTIVATE); | |
| 317 } | |
| 318 | |
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319 public synchronized void keyState(boolean down) { |
| 0 | 320 char[] arg = new char[3]; |
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321 arg[2] = (char)((down) ? 1 : 0); |
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322 monitorWrite(MONITOR_CMD_KEYSTATE, arg); |
| 0 | 323 } |
| 324 | |
| 325 public synchronized void cursorMove(int l, int c) { | |
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326 moved = true; |
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327 to_line = l; |
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328 to_column = c; |
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329 } |
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330 |
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331 public void cursorMoved() { |
| 0 | 332 char[] arg = new char[4]; |
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333 arg[2] = (char)(to_line & 0x0000ffff); |
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334 arg[3] = (char)(to_column & 0x0000ffff); |
| 0 | 335 monitorWrite(MONITOR_CMD_CURSORMOVE, arg); |
| 336 } | |
| 337 | |
| 338 public synchronized void testChanged() { | |
| 339 if (modified) { | |
| 340 modified = false; | |
| 341 sendScreen(MONITOR_CMD_SCREENCHANGE); | |
| 342 } | |
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343 |
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344 if (moved) { |
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345 moved = false; |
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346 cursorMoved(); |
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347 } |
| 0 | 348 } |
| 349 | |
| 350 public synchronized void screenChanged(int llow, int lhigh, int clow, int chigh) { | |
| 351 if ((start_line <= lhigh) && (llow <= end_line) && (start_column <= chigh) && (clow <= end_column)) { | |
| 352 modified = true; | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 public synchronized void screenChanged(int l, int c) { | |
| 357 screenChanged(l, l, c, c); | |
| 358 } | |
| 359 | |
| 360 public synchronized void setField(int l, int c, char[] data, int offset) { | |
| 361 Log.i(TAG, "setField()"); | |
| 101 | 362 char[] da = new char[data.length - offset]; |
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363 int i; |
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364 |
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365 for (i = 0; i < da.length; i++) { |
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366 da[i] = data[i + offset]; |
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367 } |
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368 |
| 100 | 369 buffer.setField(l, c, da); |
| 0 | 370 } |
| 371 | |
| 372 public synchronized void getField(int l, int c, int len) { | |
| 373 Log.i(TAG, "getField()"); | |
| 374 char[] arg2 = new char[4 + len]; | |
| 375 arg2[2] = (char)(l & 0x0000ffff); | |
| 376 arg2[3] = (char)(c & 0x0000ffff); | |
| 377 int base = 4; | |
| 378 System.arraycopy(buffer.charArray[buffer.screenBase + l], c, arg2, base, len); | |
| 379 monitorWrite(MONITOR_CMD_FIELDVALUE, arg2); | |
| 380 } | |
| 381 | |
| 382 public synchronized void screenWatch(int l, int c, int len) { | |
| 383 Log.i(TAG, "screenWatch()"); | |
| 384 start_line = l; | |
| 385 end_line = l; | |
| 386 start_column = c; | |
| 387 end_column = c + len - 1; | |
| 388 } | |
| 389 | |
| 390 public synchronized void depress(int vk_key) { | |
| 391 Log.i(TAG, String.format("depress() %d", vk_key)); | |
| 392 Integer x = keymap.get(new Integer(vk_key)); | |
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393 if (x != null) buffer.keyPressed(x, ' ', 0); |
| 0 | 394 } |
| 395 } |