/**
 * EARConfigChangeListener -- tracks the changes in the application.xml
 * in an EAR project.
 */
public class EARConfigChangeListener implements IResourceChangeListener {

/**
 * Create a new EARConfigChangeListener.
 */
public EARConfigChangeListener() {
	super();
}

/**
 * Listen for projects being added or removed and act accordingly.
 *
 * @param event org.eclipse.core.resources.IResourceChangeEvent
 */
public void resourceChanged(IResourceChangeEvent event) {
	System.out.println("Resource changed: " + event);
	// Print the stack trace.
	try {
		String hello = null;
		hello.toString();
	} catch (Exception e) {
		e.printStackTrace();
	}
	IResourceDelta delta = event.getDelta();
	System.out.println("Resource delta is: " + delta);
	if (delta == null)
		return;

	// search for changes to remote file transfer instance using a visitor
	try {
		delta.accept(new IResourceDeltaVisitor() {
			public boolean visit(IResourceDelta delta2) {
				IResource resource = delta2.getResource();
				if (resource == null)
					return true;
				if (EAR_APPLICATION_XML_FILENAME.equals(resource.getName())) {
					earConfigChanged(resource.getProject());
				} else if (resource instanceof IProject) {
					projectChanged(delta2);
					return false;
				}
				return true;
			}
		});
	} catch (Exception e) {
	}
}

/**
 * React to a change within a project.
 *
 * @param delta org.eclipse.core.resources.IResourceDelta
 */
protected void projectChanged(IResourceDelta delta) {
	IResourceDelta[] children = delta.getAffectedChildren();
	int size = children.length;
	for (int i = 0; i < size; i++) {
		IResourceDelta child = children[i];
		// look for server instances and configurations
		try {
			delta.accept(new IResourceDeltaVisitor() {
				public boolean visit(IResourceDelta delta2) {
					IResource resource = delta2.getResource();
					String resourceName = resource.getName();
					if (EAR_APPLICATION_XML_FILENAME.equals(resource.getName())) {
						earConfigChanged(resource.getProject());
						return false;
					} else
						return true;
				}
			});
		} catch (Exception e) {
		}
	}
}
}