package ie.dcu.apps.ist;

import java.net.*;

import org.eclipse.jface.resource.*;
import org.eclipse.swt.graphics.*;

/**
 * Application status bar message type.
 * 
 * @author Kevin McGuinness
 */
public enum AppStatus {
	Information, Warning, Error;
	
	public Image getIcon() {
		String key = key();
		Image image = JFaceResources.getImage(key);
		if (image == null) {
			ImageRegistry registry = JFaceResources.getImageRegistry();
			ImageDescriptor descriptor = createImageDescriptor();
			registry.put(key, descriptor);
			image = registry.get(key);
		}
		return image;
	}
	
	private ImageDescriptor createImageDescriptor() {
		try {
			return ImageDescriptor.createFromURL(new URL(key()));
		} catch (MalformedURLException e) {
			throw new RuntimeException(e);
		}
	}
	
	private String key() {
		switch (this) {
		case Information:
			return "file:resources/icons/dialog-information.png";
		case Warning:
			return "file:resources/icons/dialog-warning.png";
		default:
			return "file:resources/icons/dialog-error.png";
		}
	}
}