reportscreen.java

J2ME MIDP_Example_Applications

// Copyright 2003 Nokia Corporation.
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
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// retains the right to make changes to this source code at
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import org.bouncycastle.util.encoders.Hex;
import javax.microedition.lcdui.*;

class ReportScreen
  extends TextBox
  implements CommandListener
{
  private final Command backCommand, viewHexCommand;
  private final byte[] content;
  private final int size;
  private final EncryptedSMSMIDlet parent;


  ReportScreen(EncryptedSMSMIDlet parent,
               String text,
               byte[] content,
               int size)
  {
    super("Report", text, 256, TextField.ANY);

    this.content = content;
    this.size = size;
    this.parent = parent;

    backCommand = new Command("Back", Command.BACK, 0);
    viewHexCommand = new Command("View Hex", Command.ITEM, 0);

    addCommand(backCommand);
    addCommand(viewHexCommand);
    setCommandListener(this);
  }


  public void commandAction(Command cmd, Displayable displayable)
  {
    if (cmd == viewHexCommand && content != null)
    {
      String result = new String(Hex.encode(content));
      // format the output nicely
      StringBuffer hexText = new StringBuffer();
      for (int i = 0; i < size; i++)
      {
        hexText.append(result.substring(i * 2, i * 2 + 2)).append(" ");
      }
      String finalText = hexText.toString();

      // remove the tail
      if (getMaxSize() > finalText.length())
      {
        result = finalText.substring(0, finalText.length() - 3) + "...";
      }
      setString(result);
    }
    if (cmd == backCommand)
    {
      parent.showMain();
    }
  }
}