com.bytezone.dm3270.orders.StartFieldOrder 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.orders;

import com.bytezone.dm3270.attributes.StartFieldAttribute;
import com.bytezone.dm3270.display.DisplayScreen;
import com.bytezone.dm3270.display.Pen;

public class StartFieldOrder extends Order {

  private final StartFieldAttribute startFieldAttribute;
  private int location = -1;

  public StartFieldOrder(byte[] buffer, int offset) {
    assert buffer[offset] == Order.START_FIELD;

    startFieldAttribute = new StartFieldAttribute(buffer[offset + 1]);

    this.buffer = new byte[2];
    this.buffer[0] = buffer[offset];
    this.buffer[1] = buffer[offset + 1];
  }

  @Override
  public void process(DisplayScreen screen) {
    Pen pen = screen.getPen();
    location = pen.getPosition();
    pen.startField(startFieldAttribute);
    pen.moveRight();
  }

  @Override
  public String toString() {
    return String.format("SF  : %s (%04d)", startFieldAttribute, location);
  }

}