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.editor.key.polytomous;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionAdapter;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Label;

import org.eclipse.swt.widgets.Link;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.forms.IFormPart;

import org.eclipse.ui.forms.IManagedForm;

import eu.etaxonomy.cdm.common.CdmUtils;

import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;

import eu.etaxonomy.cdm.model.description.KeyStatement;

import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;

import eu.etaxonomy.cdm.model.taxon.Taxon;

import eu.etaxonomy.taxeditor.editor.EditorUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

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

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

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

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

/**

 * @author n.hoffmann

 * @created Apr 13, 2011

 * @version 1.0

 */

public class PolytomousKeyListItem extends AbstractCdmFormElement implements

		IFormPart, ISelectable {

	private boolean dirty;

	private final PolytomousKeyNode entity;

	private SelectionListener linkSelectionListener;

	/**

	 * @param formFactory

	 * @param layoutComposite

	 */

	protected PolytomousKeyListItem(CdmFormFactory formFactory,

			Composite layoutComposite, PolytomousKeyNode entity) {

		super(formFactory, layoutComposite);

		// layoutComposite.setBackground(Display.getDefault().getSystemColor(

		// SWT.COLOR_CYAN));

		this.entity = (PolytomousKeyNode) HibernateProxyHelper.deproxy(entity);

		Label label_nodeNumber = new Label(getLayoutComposite(), SWT.NULL);

		label_nodeNumber.setText(getItemNumber());

		Label label_question = new Label(getLayoutComposite(), SWT.NULL);

		label_question.setText(getItemQuestion());

		Label label_statement = new Label(getLayoutComposite(), SWT.NULL);

		label_statement.setText(getItemStatement());

		label_statement.setLayoutData(LayoutConstants.FILL_HORIZONTALLY());

		Link link = new Link(getLayoutComposite(), SWT.NONE);

		link.setText("<a>" + getItemLink() + "</a>");

		link.setData(getItemLinkData());

		link.addSelectionListener(getLinkSelectionListener());

		// Label label_link = new Label(getLayoutComposite(), SWT.NULL);

		// label_link.setText(link);

	}

	/**

	 * @return

	 */

	private SelectionListener getLinkSelectionListener() {

		if (linkSelectionListener == null) {

			linkSelectionListener = new SelectionAdapter() {

				/*

				 * (non-Javadoc)

				 * 

				 * @see

				 * org.eclipse.swt.events.SelectionAdapter#widgetSelected(org

				 * .eclipse.swt.events.SelectionEvent)

				 */

				@Override

				public void widgetSelected(SelectionEvent e) {

					Object data = e.widget.getData();

					if (data instanceof Taxon) {

						try {

							EditorUtil.openTaxonBase(((Taxon) data).getUuid());

						} catch (PartInitException e1) {

							// TODO Auto-generated catch block

							e1.printStackTrace();

						}

					}

				}

			};

		}

		return linkSelectionListener;

	}

	private String getItemNumber() {

		if (isParentRoot()) {

			return "root";

		} else {

			PolytomousKeyNode parent = getParent();

			String itemNumber = parent.getNodeNumber() != null ? parent

					.getNodeNumber().toString() : "NaN";

			int index = parent.getChildren().indexOf(entity);

			for (int i = 0; i < index; i++) {

				itemNumber += "'";

			}

			return itemNumber;

		}

	}

	private String getItemQuestion() {

		if (isParentRoot()) {

			return "";

		} else {

			KeyStatement question = getParent().getQuestion();

			return question != null ? question.getLabelText(CdmStore

					.getDefaultLanguage()) : "";

		}

	}

	private String getItemStatement() {

		KeyStatement statement = entity.getStatement();

		return statement != null ? CdmUtils.Nz(statement.getLabelText(CdmStore

				.getDefaultLanguage())) : "No statement";

	}

	private String getItemLink() {

		String taxonString = entity.getTaxon() != null ? entity.getTaxon()

				.getName().getTitleCache() : "Taxon empty";

		return entity.getChildren().isEmpty() ? taxonString : entity

				.getNodeNumber().toString();

	}

	/**

	 * @return

	 */

	private Object getItemLinkData() {

		return entity.getChildren().isEmpty() ? entity.getTaxon() : entity

				.getChildAt(0);

	}

	private PolytomousKeyNode getParent() {

		return entity.getParent();

	}

	private boolean isParentRoot() {

		return getParent() == null;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see

	 * org.eclipse.ui.forms.IFormPart#initialize(org.eclipse.ui.forms.IManagedForm

	 * )

	 */

	@Override

	public void initialize(IManagedForm form) {

		// TODO Auto-generated method stub

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#isDirty()

	 */

	@Override

	public boolean isDirty() {

		return dirty;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#commit(boolean)

	 */

	@Override

	public void commit(boolean onSave) {

		// TODO Auto-generated method stub

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#setFormInput(java.lang.Object)

	 */

	@Override

	public boolean setFormInput(Object input) {

		// TODO Auto-generated method stub

		return false;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#setFocus()

	 */

	@Override

	public void setFocus() {

		// TODO Auto-generated method stub

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#isStale()

	 */

	@Override

	public boolean isStale() {

		// TODO Auto-generated method stub

		return false;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#refresh()

	 */

	@Override

	public void refresh() {

		// TODO Auto-generated method stub

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.ui.forms.IFormPart#dispose()

	 */

	@Override

	public void dispose() {

		// TODO Auto-generated method stub

	}

	/**

	 * @return the entity

	 */

	public PolytomousKeyNode getEntity() {

		return entity;

	}

	@Override

	public void setSelected(boolean selected) {

		setBackground(selected ? SELECTED : getPersistentBackground());

	}

}