package ie.dcu.apps.ist.actions;

import ie.dcu.apps.ist.Application;
import ie.dcu.swt.layout.LayoutFactory;

import org.eclipse.jface.dialogs.*;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.*;


/**
 * Show an about dialog.
 * 
 * @author Kevin McGuinness
 */
public class AboutAction extends AppAction {
	
	private AboutBox dialog;
	
	public AboutAction(ActionManager m) {
		super(m);
	}

	
	@Override 
	public void run() { 
		if (dialog == null) {
			dialog = new AboutBox();
		}
		dialog.open();
	}
	
	
	private class AboutBox extends Dialog {


		private static final String MESSAGE_DEV = 
			"   Nikhil Lingutla <lingutln@onid.orst.edu>\n" +
			"   School of Electrical Engineering and Computer Science\n" +
			"   Oregon State University\n" +
			"   http://www.oregonstate.edu\n" +
			"\n" +
			"   Justin Preece <preecej@science.oregonstate.edu>\n" +
			"   Jaiswal Lab, Dept. of Botany and Plant Pathology\n" +
			"   Oregon State University\n" +
			"   http://jaiswallab.cgrb.oregonstate.edu\n";

		private static final String MESSAGE_SPONSOR = 
			"   Sinisa Todorovic <sinisa@onid.orst.edu>\n" +
			"   Assistant Prof., School of Electrical Engineering and Computer Science\n" +
			"   Oregon State University\n" +
			"   http://eecs.oregonstate.edu/people/todorovic\n" +
			"\n" +
			"   Pankaj Jaiswal <jaiswalp@science.oregonstate.edu>\n" +
			"   Assistant Prof., Dept. of Botany and Plant Pathology\n" +
			"   Oregon State University\n" +
			"   http://bpp.oregonstate.edu/jaiswal\n";

		private static final String MESSAGE_ORIG = 
			"   Kevin McGuinness <kevin.mcguinness@eeng.dcu.ie>\n" +
			"   CLARITY: Center for Sensor Web Technologies\n" +
			"   Dublin City University\n" +
			"   http://www.clarity-center.org\n";

		private static final String MESSAGE_ORIG_SOFTWARE = 
			"   Interactive Segmentation and Annotation Tool, v1.3.4\n" +
			"   http://kspace.cdvp.dcu.ie/public/interactive-segmentation\n";
		
		private Composite composite;
		

		protected AboutBox() {
			super(window);
		}
		

		@Override
		protected Control createDialogArea(Composite parent) {

			composite = new Composite(parent, SWT.NONE);
			composite.setLayout(LayoutFactory.createGridLayout(5, 5, 2, false));
			
			// top row 
			String image = string("aboutImage");
			addImage(image);
			
			addLabel("AISO (Annotation of Image Segments using Ontologies)" + System.getProperty("line.separator") 
					+ "Ontology-Enabled Image Segmentation and Annotation", SWT.CENTER);
			
			// 2nd row
			addLabel(String.format("Version %s", Application.APP_VERSION), SWT.CENTER);
			addLabel(" SWT Version " + swtVersionString(), SWT.CENTER);

			// 3rd row
			addLabel(" Developed By:", SWT.RIGHT);
			addLink(MESSAGE_DEV);

			// 4th row
			addLabel(" Sponsored By:", SWT.RIGHT);
			addLink(MESSAGE_SPONSOR);

			// 5th row
			addLabel(" Based on software:", SWT.RIGHT);
			addLink(MESSAGE_ORIG_SOFTWARE);

			// 6th row
			addLabel(" Originally developed by:", SWT.RIGHT);
			addLink(MESSAGE_ORIG);

			// Last row
			addLink("This work is licensed under\n" +
					"a Creative Commons\n" +
					"Attribution-NonCommercial-NoDerivs\n" +
					"3.0 Unported License");
			String osImage = string("os_license_image");
			addImage(osImage);
		
			return composite;
		}
		
		private String swtVersionString() {
			return String.format("%d (%s)", SWT.getVersion(), SWT.getPlatform());
		}
	
		
		@Override
		protected void createButtonsForButtonBar(Composite parent) {
			createButton(parent, 
					IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true);
		}


		@Override
		protected void configureShell(Shell shell) {
			super.configureShell(shell);
			shell.setText("About");
		}
		
		
		private void addLink(String string) {
			Link link = new Link(composite, 0);
			link.setText(string);
			link.setLayoutData(LayoutFactory.createGridData());
		}

		
		private void addLabel(String text, int alignment) {
			Label label = new Label(composite, 0);
			label.setText(text);
			label.setAlignment(alignment);
			label.setLayoutData(LayoutFactory.createGridData());
			label.setFont(JFaceResources.getBannerFont());
		}
		
		private void addImage(String url) {
			Label label = new Label(composite, 0);
			label.setImage(window.getIcon(url));
			label.setLayoutData(LayoutFactory.createGridData());
		}
	}
}