EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy 

* http://www.e-taxonomy.eu

* 

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.newWizard;

import java.util.List;

import org.eclipse.jface.viewers.ISelectionChangedListener;

import org.eclipse.jface.viewers.IStructuredContentProvider;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.viewers.LabelProvider;

import org.eclipse.jface.viewers.ListViewer;

import org.eclipse.jface.viewers.SelectionChangedEvent;

import org.eclipse.jface.viewers.Viewer;

import org.eclipse.jface.wizard.WizardPage;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Text;

import eu.etaxonomy.cdm.api.application.ICdmApplicationConfiguration;

import eu.etaxonomy.cdm.api.conversation.ConversationHolder;

import eu.etaxonomy.cdm.ext.ipni.IIpniService;

import eu.etaxonomy.cdm.ext.ipni.IpniService;

import eu.etaxonomy.cdm.model.reference.Reference;

import eu.etaxonomy.taxeditor.store.CdmStore;

import eu.etaxonomy.taxeditor.ui.element.CdmFormFactory;

import eu.etaxonomy.taxeditor.ui.element.LayoutConstants;

/**

 * <p>ExternalReferenceServiceWizardPage class.</p>

 *

 * @author n.hoffmann

 * @created Sep 16, 2010

 * @version 1.0

 */

public class ExternalReferenceServiceWizardPage extends WizardPage implements SelectionListener, ISelectionChangedListener {

	private ConversationHolder conversation;

	private CdmFormFactory formFactory;

	private Reference entity;

	private Composite control;

	private ListViewer viewer;

	private IIpniService ipniService;

	private Text text_query;

	private Button button_search;

	/**

	 * <p>Constructor for ExternalReferenceServiceWizardPage.</p>

	 *

	 * @param formFactory a {@link eu.etaxonomy.taxeditor.ui.element.CdmFormFactory} object.

	 * @param conversation a {@link eu.etaxonomy.cdm.api.conversation.ConversationHolder} object.

	 * @param entity a {@link eu.etaxonomy.cdm.model.reference.ReferenceBase} object.

	 */

	protected ExternalReferenceServiceWizardPage(CdmFormFactory formFactory, ConversationHolder conversation, Reference entity) {

		super("ExternalReferenceServiceWizardPage");

		this.formFactory = formFactory;

		this.entity = entity;

		this.conversation = conversation;

		ipniService = new IpniService();

		setDescription("Query IPNI service for references");

	}

	/* (non-Javadoc)

	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)

	 */

	/** {@inheritDoc} */

	@Override

	public void createControl(Composite parent) {

		control = formFactory.createComposite(parent);

		control.setLayout(LayoutConstants.LAYOUT(2, false));

		text_query = new Text(control, SWT.SINGLE | SWT.BORDER);

		text_query.setLayoutData(LayoutConstants.FILL_HORIZONTALLY());

		button_search = new Button(control, SWT.PUSH);

		button_search.setLayoutData(LayoutConstants.RIGHT());

		button_search.setText("Search");

		button_search.addSelectionListener(this);

		viewer = new ListViewer(control);

		viewer.getControl().setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2,1));

		viewer.setContentProvider(new IStructuredContentProvider(){

			@Override

			public Object[] getElements(Object inputElement) {

				if(inputElement instanceof List){

					return ((List) inputElement).toArray();

				}

				return null;

			}

			@Override

			public void inputChanged(Viewer viewer, Object oldInput,

					Object newInput) {}

			@Override

			public void dispose() {}

		});

		viewer.setLabelProvider(new LabelProvider(){

			@Override

			public String getText(Object element) {

				if(element instanceof Reference){

					return ((Reference) element).getTitleCache();

				}

				return "Element is not a reference";

			}

		});

		viewer.addSelectionChangedListener(this);

		setControl(control);

	}

	/** {@inheritDoc} */

	@Override

	public void widgetSelected(SelectionEvent e) {

		String query = text_query.getText();

		List<Reference> publications = ipniService.getPublications(query, null, (ICdmApplicationConfiguration) CdmStore.getCurrentApplicationConfiguration(), null);

		viewer.setInput(publications);

	}

	/** {@inheritDoc} */

	@Override

	public void widgetDefaultSelected(SelectionEvent e) {}

	/** {@inheritDoc} */

	@Override

	public void selectionChanged(SelectionChangedEvent event) {

		IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();

		Reference selectedReference = (Reference) selection.getFirstElement();

		if(selectedReference != null){

			((AbstractNewEntityWizard) getWizard()).setEntity(selectedReference);

		}

	}

}