Android Open Source - cost-tracker Tracker Clock

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License

The source code is released under:

GNU General Public License

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Java Source Code

/**
 * /* www . ja v a2 s .c  o  m*/
 */
package com.helpguest.droid.tracker;


/**
 * @author mabrams
 *
 */
public class TrackerClock implements ITrackerClock {

  private long startTime = 0;
  private long stopTime = 0;
  private boolean isStarted = false;
  private String note;
  
  /**
   * Create a tracker clock from known times. It is not recommended to use this 
   * ctor unless you are restoring a TrackerClock from persistence.
   * @param startTime
   * @param stopTime
   */
  public TrackerClock(long startTime, long stopTime) {
    this.startTime = startTime;
    this.stopTime = stopTime;
    isStarted = startTime > 0 ? true : false;
  }
  
  /**
   * Default CTor
   */
  public TrackerClock() {}

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#start(com.helpguest.droid.tracker.ITracker)
   */
  @Override
  public ITrackerClock start(ITracker tracker)
      throws UnsupportedOperationException {
    if (isStarted) {
      throw new UnsupportedOperationException("Already started at '" + startTime + "'");
    }
    startTime = System.currentTimeMillis();
    isStarted = true;
    return this;
  }

  @Override
  public ITrackerClock start(ITracker tracker, String note)
      throws UnsupportedOperationException {
    this.note = note;
    return start(tracker);
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#stop(com.helpguest.droid.tracker.ITracker)
   */
  @Override
  public long stop(ITracker tracker) {
    stopTime = System.currentTimeMillis();
    return startTime - stopTime;
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#stop()
   */
  @Override
  public long stop() {
    return stop(null);
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#isStarted()
   */
  @Override
  public boolean isStarted() {
    return isStarted;
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#isExpired()
   */
  @Override
  public boolean isExpired() {        
    return startTime > 0 && stopTime > 0;
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#startTime()
   */
  @Override
  public Long startTime() {
    if (startTime > 0) {
      return Long.valueOf(startTime);
    }
    return null;
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#stopTime()
   */
  @Override
  public Long stopTime() {
    if (stopTime > 0) {
      return Long.valueOf(stopTime);
    }
    return null;
  }

  /* (non-Javadoc)
   * @see com.helpguest.droid.tracker.ITrackerClock#duration()
   */
  @Override
  public long duration() {    
    return stopTime - startTime;
  }

  @Override
  public long currentRuntime() {
    if (isStarted && !isExpired()) {
      return System.currentTimeMillis() - startTime;
    }
    return 0;
  }

  @Override
  public String getNote() {
    return note;
  }

  @Override
  public void setNote(String note) {
    this.note = note;
  }  
  

}

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