Alert.java

// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.
 
package org.wpilib.util;

public class Alert implements AutoCloseable {
  public enum Level {
    HIGH(AlertDataJNI.LEVEL_HIGH),

    MEDIUM(AlertDataJNI.LEVEL_MEDIUM),

    LOW(AlertDataJNI.LEVEL_LOW);
 
    private final int m_value;
 
    Level(int value) {
      m_value = value;
    }

    public int getValue() {
      return m_value;
    }
  }
 
  private final Level m_level;
  private int m_handle;

  public Alert(String id, String text, Level level) {
    this("Alerts", id, text, level);
  }

  public Alert(String group, String id, String text, Level level) {
    m_level = level;
    m_handle = WPIUtilJNI.createAlert(group, id, text, level.m_value);
  }

  public void set(boolean active) {
    WPIUtilJNI.setAlertActive(m_handle, active);
  }

  public boolean get() {
    return WPIUtilJNI.isAlertActive(m_handle);
  }

  public void setText(String text) {
    WPIUtilJNI.setAlertText(m_handle, text);
  }

  public String getText() {
    return WPIUtilJNI.getAlertText(m_handle);
  }

  public Level getLevel() {
    return m_level;
  }
 
  @Override
  public void close() {
    if (m_handle != 0) {
      WPIUtilJNI.destroyAlert(m_handle);
      m_handle = 0;
    }
  }
}