package org.nightlabs.jfire.trade.ui.detail;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.IViewSite;
import org.eclipse.ui.PartInitException;
import org.nightlabs.base.ui.notification.SelectionManager;
import org.nightlabs.jfire.base.login.ui.part.LSDViewPart;
import org.nightlabs.jfire.store.ProductType;
import org.nightlabs.jfire.store.id.ProductTypeID;
import org.nightlabs.jfire.trade.ui.TradePlugin;
import org.nightlabs.notification.NotificationAdapterCallerThread;
import org.nightlabs.notification.NotificationEvent;
import org.nightlabs.notification.NotificationListener;

/**
 * This View shows detailed informations of selected {@link ProductType}s.
 * The shown composites come from the {@link ProductTypeDetailViewRegistry} where
 * {@link IProductTypeDetailView} can be registered for ProductType Classes.
 * This is done via the Extension-Point org.nightlabs.jfire.trade.ui.productTypeDetailView.
 * The View listenes of selections coming from the {@link SelectionManager} with the
 * zone {@link TradePlugin#ZONE_SALE} and the class {@link ProductType}
 *
 *
 * @author Daniel.Mazurek [at] NightLabs [dot] de
 *
 */
public class ProductTypeDetailView
//extends ViewPart
extends LSDViewPart
{
	public static final String ID_VIEW = ProductTypeDetailView.class.getName();

	public ProductTypeDetailView() {
		super();
	}

	private IMemento initMemento = null;

	/* (non-Javadoc)
	 * @see org.eclipse.ui.part.ViewPart#init(org.eclipse.ui.IViewSite, org.eclipse.ui.IMemento)
	 */
	@Override
	public void init(IViewSite site, IMemento memento) throws PartInitException {
		super.init(site, memento);
		this.initMemento = memento;
	}

	/* (non-Javadoc)
	 * @see org.nightlabs.base.ui.part.ControllablePart#createPartContents(org.eclipse.swt.widgets.Composite)
	 */
	@Override
	public void createPartContents(Composite parent)
	{
		productTypeDetailComposite = new ProductTypeDetailViewComposite(parent, SWT.NONE);

		SelectionManager.sharedInstance().addNotificationListener(
				TradePlugin.ZONE_SALE, ProductType.class, productTypeSelectionListener);

		if (initMemento != null)
			productTypeDetailComposite.init(initMemento);

		productTypeDetailComposite.addDisposeListener(new DisposeListener() {
			public void widgetDisposed(DisposeEvent e) {
				SelectionManager.sharedInstance().removeNotificationListener(TradePlugin.ZONE_SALE,
						ProductType.class, productTypeSelectionListener);
			}
		});
	}

	private ProductTypeDetailViewComposite productTypeDetailComposite;

	/* (non-Javadoc)
	 * @see org.nightlabs.jfire.base.ui.login.part.LSDViewPart#setFocus()
	 */
	@Override
	public void setFocus() {
	}

	private NotificationListener productTypeSelectionListener = new NotificationAdapterCallerThread(){
		public void notify(NotificationEvent notificationEvent) {
			Object firstSelection = notificationEvent.getFirstSubject();
			if (firstSelection instanceof ProductTypeID) {
				ProductTypeID productTypeID = (ProductTypeID) firstSelection;
				if (productTypeDetailComposite != null && !productTypeDetailComposite.isDisposed())
					productTypeDetailComposite.showProductTypeDetail(productTypeID);
			}
		}
	};


	/* (non-Javadoc)
	 * @see org.eclipse.ui.part.ViewPart#saveState(org.eclipse.ui.IMemento)
	 */
	@Override
	public void saveState(IMemento memento) {
		super.saveState(memento);
		if (productTypeDetailComposite != null)
			productTypeDetailComposite.saveState(memento);
	}

}