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.name.handler;

import java.util.List;

import java.util.Set;

import java.util.UUID;

import org.apache.log4j.Logger;

import org.eclipse.core.commands.AbstractHandler;

import org.eclipse.core.commands.ExecutionEvent;

import org.eclipse.core.commands.ExecutionException;

import org.eclipse.jface.viewers.StructuredSelection;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.handlers.HandlerUtil;

import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;

import eu.etaxonomy.cdm.model.common.CdmBase;

import eu.etaxonomy.cdm.model.name.HomotypicalGroup;

import eu.etaxonomy.cdm.model.name.TaxonNameBase;

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

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

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

import eu.etaxonomy.taxeditor.editor.EditorUtil;

import eu.etaxonomy.taxeditor.editor.MultiPageTaxonEditor;

import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;

import eu.etaxonomy.taxeditor.editor.name.operation.ChangeSynonymToAcceptedTaxonOperation;

import eu.etaxonomy.taxeditor.model.MessagingUtils;

import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;

import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;

import eu.etaxonomy.taxeditor.ui.dialog.selection.TaxonNodeSelectionDialog;

/**

 * <p>ChangeSynonymToAcceptedTaxonHandler class.</p>

 *

 * @author n.hoffmann

 * @created 21.04.2009

 * @version 1.0

 */

public class ChangeSynonymToAcceptedTaxonHandler extends AbstractHandler implements IPostOperationEnabled {

	private static final Logger logger = Logger

			.getLogger(ChangeSynonymToAcceptedTaxonHandler.class);

	private MultiPageTaxonEditor editor;

	/* (non-Javadoc)

	 * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)

	 */

	/** {@inheritDoc} */

	public Object execute(ExecutionEvent event) throws ExecutionException {

		editor =  (MultiPageTaxonEditor) HandlerUtil.getActiveEditor(event);

		Shell shell = HandlerUtil.getActiveShell(event);

		IEditorInput input = editor.getEditorInput();

		if (!(input instanceof TaxonEditorInput)) {

			logger.error("Editor input is not TaxonEditorInput");

			return null;

		}

		// Get synonym from selection

		StructuredSelection selection = (StructuredSelection) HandlerUtil.getCurrentSelection(event);

		if (!(selection.getFirstElement() instanceof Synonym)) {

			logger.error("Selection does not contain a Synonym");

			return null;

		}

		Synonym synonym = (Synonym) selection.getFirstElement();

		// Force user to save taxon - not really necessary though, is it?

		if (!EditorUtil.forceUserSave(editor, shell)) {

			return null;

		}

		// Get taxon

		Taxon taxon = ((TaxonEditorInput) input).getTaxon();

		TaxonNode parentNode = (TaxonNode) HibernateProxyHelper.deproxy(((TaxonEditorInput) input).getTaxonNode().getParent());

		List<UUID> excludeTaxa = null;

		TaxonNode newParentNode = TaxonNodeSelectionDialog.select(HandlerUtil.getActiveShell(event), editor.getConversationHolder(), "Select parent", excludeTaxa, null, null);

		if(newParentNode != null){

			// TODO get synonyms from homotypical group and add them as homotypic synonyms to new accepted taxon

			// apply confirmation dialog

			HomotypicalGroup group = synonym.getHomotypicGroup();

			Set<TaxonNameBase> namesInGroup = group.getTypifiedNames();

			// FIXME with this implementation we can not create a taxonNode that is a direct child of the classification node

			AbstractPostOperation operation = new ChangeSynonymToAcceptedTaxonOperation("Change synonym to accepted taxon", EditorUtil.getUndoContext(), 

					taxon, newParentNode, synonym, namesInGroup, this, editor); //$NON-NLS-1$

			EditorUtil.executeOperation(operation);

		}

		return null;

	}

	/* (non-Javadoc)

	 * @see eu.etaxonomy.taxeditor.operations.IPostOperationEnabled#postOperation(eu.etaxonomy.cdm.model.common.CdmBase)

	 */

	/** {@inheritDoc} */

	public boolean postOperation(CdmBase objectAffectedByOperation) {

		// Redraw existing editor

		((IPostOperationEnabled) editor).postOperation(null);

		editor.doSave(EditorUtil.getMonitor());

		if (objectAffectedByOperation instanceof TaxonNode) {

			// Open new unsaved editor with existing taxon's parent as temporary parent

			TaxonNode newNode = (TaxonNode) objectAffectedByOperation;

//			TaxonNode newNode = parentNode.addChild(newTaxon);

			try {

				// TODO

				/*

				 * This doesn't work b/c newNode hasn't been committed yet, and therefore

				 *  CdmStore.getTaxonService().getTaxonNodeByUuid(taxonNodeUuid);

				 *  doesn't work yet.

				 */

				EditorUtil.openTaxonNode(newNode.getUuid());

			} catch (PartInitException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			} catch (Exception e) {

				MessagingUtils.warningDialog("Could not create Taxon", this, e.getMessage());

			}

		}

		return true;

	}

	/**

	 * <p>onComplete</p>

	 *

	 * @return a boolean.

	 */

	public boolean onComplete() {

		// TODO Auto-generated method stub

		return false;

	}

}