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docx4j is a library which helps you to work with the Office Open XML file format as used in docx documents, pptx presentations, and xlsx spreadsheets.

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package org.docx4j.events;


import org.docx4j.Docx4jProperties;

import net.engio.mbassy.bus.MBassador;

public abstract class Docx4jEvent {
	
	private static MBassador bus;
	public static void setEventNotifier(MBassador bus) {
		Docx4jEvent.bus = bus;
	}	
	
	private static Boolean publishAsynch = null;
	public static Boolean publishAsynch() {
		if (publishAsynch==null) {
			publishAsynch = Docx4jProperties.getProperty("docx4j.events.Docx4jEvent.PublishAsync", false);
		}
		return publishAsynch;
	}

	public static void setPublishAsynch(Boolean publishAsynch) {
		Docx4jEvent.publishAsynch = publishAsynch;
	}
	
	
	/* The 3 constructors are designed to facilitate the one-liner:
	 * 
	 *    Docx4jEvent.publish(bus, new Docx4jEvent( Job.MERGE, EventType.PKG_STARTED));
	 */



	private PackageIdentifier pkgIdentifier=null; // where null, the event is assumed to be job level
	public PackageIdentifier getPkgIdentifier() {
		return pkgIdentifier;
	}
	
	/**
	 * Use this to signal the start or end of a Job.
	 * 
	 * @param job
	 * @param eventType
	 */
	public Docx4jEvent(JobIdentifier job) {
		this.job = job;
		
		
	}

	/**
	 * Use this to signal the start or end of work on a specific pkg in a job.
	 * 
	 * @param job
	 * @param eventType
	 */
	public Docx4jEvent(JobIdentifier job,  PackageIdentifier pkgIdentifier) {
		this.job = job;
		this.pkgIdentifier = pkgIdentifier;
	}
	
	/**
	 * Use this to signal the start or end of work on a specific pkg,
	 * where you didn't define an overall job.
	 * 
	 * @param job
	 * @param eventType
	 */
	public Docx4jEvent(PackageIdentifier pkgIdentifier) { 
		this.job = WellKnownJobTypes.ANONYMOUS;
		this.pkgIdentifier = pkgIdentifier;
	}
	
	/**
	 * Use this to signal the start or end of a process step,
	 * where you didn't define an overall job.
	 * 
	 * @param job
	 * @param eventType
	 */
	public Docx4jEvent(PackageIdentifier pkgIdentifier, ProcessStep processStep) {
		this.job = WellKnownJobTypes.ANONYMOUS;
		this.pkgIdentifier = pkgIdentifier;
		this.processStep = processStep;
	}
	
	/**
	 * Use this to signal the start or end of a process step,
	 * on some pkg in some overall job.
	 * 
	 * @param job
	 * @param eventType
	 */
	public Docx4jEvent(JobIdentifier job,  PackageIdentifier pkgIdentifier, ProcessStep processStep) {
		this.job = job;
		this.pkgIdentifier = pkgIdentifier;
		this.processStep = processStep;
	}

	
	public void publish() {
    	if (bus!=null) {
    		if (publishAsynch()) {
    			bus.publishAsync(this);
    		} else {
    			// predictable order
    			bus.publish(this);    			
    		}
    	}				
	}
	

	private JobIdentifier job; 
	public JobIdentifier getJob() {
		return job;
	}

	private ProcessStep processStep;
	/**
	 * Retrieve the step in the process, if set.  You can create your own set of steps
	 * (for things which happen in your user code ie outside docx4j's source code)
	 * by implementing the ProcessStep interface.  
	 * @return
	 */
	public ProcessStep getProcessStep() {
		return processStep;
	}
	public void setProcessStep(ProcessStep processStep) {
		this.processStep = processStep;
	}
	
//	private OpcPackage pkg;
//	/**
//	 * Retrieve the pkg, for example if you want to get some user data you've set on it.
//	 * @return
//	 */
//	public OpcPackage getPkg() {
//		return pkg;
//	}
//	public void setPkg(OpcPackage pkg) {
//		this.pkg = pkg;
//	}

	
}