com.bytezone.dm3270.replyfield.Highlight Maven / Gradle / Ivy

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This is a trimmed down version of https://github.com/dmolony/dm3270 to be used as TN3270 client library

There is a newer version: 0.15-lib

package com.bytezone.dm3270.replyfield;

public class Highlight extends QueryReplyField {

  private static final byte HIGHLIGHT_DEFAULT = 0x00;
  private static final byte HIGHLIGHT_NORMAL = (byte) 0xF0;
  private static final byte HIGHLIGHT_BLINK = (byte) 0xF1;
  private static final byte HIGHLIGHT_REVERSE = (byte) 0xF2;
  private static final byte HIGHLIGHT_UNDERSCORE = (byte) 0xF4;
  private static final byte HIGHLIGHT_INTENSIFY = (byte) 0xF8;

  private static final String[] VALUES = {"Normal", "Blink", "Reverse video", "",
      "Underscore", "", "", "", "Intensity"};

  private int pairs;
  private byte[] attributeValue;
  private byte[] action;

  public Highlight() {
    super(HIGHLIGHT_QUERY_REPLY);

    int ptr = createReply(11);       // 5 pairs x 2 plus 1

    reply[ptr++] = 0x05;      //Number of attribute-value/action pairs

    // Byte 1: Data stream attribute
    // Byte 2: Data stream action

    reply[ptr++] = HIGHLIGHT_DEFAULT;
    reply[ptr++] = HIGHLIGHT_NORMAL;

    reply[ptr++] = HIGHLIGHT_BLINK;
    reply[ptr++] = HIGHLIGHT_BLINK;

    reply[ptr++] = HIGHLIGHT_REVERSE;
    reply[ptr++] = HIGHLIGHT_REVERSE;

    reply[ptr++] = HIGHLIGHT_UNDERSCORE;
    reply[ptr++] = HIGHLIGHT_UNDERSCORE;

    reply[ptr++] = HIGHLIGHT_INTENSIFY;
    reply[ptr++] = HIGHLIGHT_INTENSIFY;

    checkDataLength(ptr);
  }

  public Highlight(byte[] buffer) {
    super(buffer);

    assert data[1] == HIGHLIGHT_QUERY_REPLY;

    pairs = data[2] & 0xFF;
    attributeValue = new byte[pairs];
    action = new byte[pairs];

    for (int i = 0; i < pairs; i++) {
      attributeValue[i] = data[i * 2 + 3];
      action[i] = data[i * 2 + 4];
    }
  }

  @Override
  public String toString() {
    StringBuilder text = new StringBuilder(super.toString());

    text.append(String.format("%n  pairs      : %d", pairs));
    for (int i = 0; i < pairs; i++) {
      int av = attributeValue[i];
      String attrText = av == 0 ? "Default" : VALUES[av & 0x0F];
      String actionText = VALUES[action[i] & 0x0F];
      String out =
          attrText.equals(actionText) ? attrText : attrText + " -> " + actionText;
      text.append(String.format("%n  val/actn   : %02X/%02X - %s", attributeValue[i],
          action[i], out));
    }

    return text.toString();
  }

}