EDIT

/**

* 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.e4.handler;

import java.util.Set;

import javax.inject.Named;

import org.apache.log4j.Logger;

import org.eclipse.e4.core.di.annotations.CanExecute;

import org.eclipse.e4.core.di.annotations.Execute;

import org.eclipse.e4.ui.di.UISynchronize;

import org.eclipse.e4.ui.model.application.MApplication;

import org.eclipse.e4.ui.model.application.ui.basic.MPart;

import org.eclipse.e4.ui.model.application.ui.menu.MHandledMenuItem;

import org.eclipse.e4.ui.services.IServiceConstants;

import org.eclipse.e4.ui.workbench.modeling.EModelService;

import org.eclipse.e4.ui.workbench.modeling.EPartService;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.swt.widgets.Shell;

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

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

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

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.e4.TaxonEditorInputE4;

import eu.etaxonomy.taxeditor.editor.l10n.Messages;

import eu.etaxonomy.taxeditor.editor.name.e4.TaxonNameEditorE4;

import eu.etaxonomy.taxeditor.editor.name.handler.NameEditorMenuPropertyTester;

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

import eu.etaxonomy.taxeditor.model.AbstractUtility;

import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;

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

/**

 *

 * @author pplitzner

 * @since Aug 28, 2017

 *

 */

public class ChangeSynonymToAcceptedTaxonHandlerE4 implements IPostOperationEnabled {

	private static final Logger logger = Logger

			.getLogger(ChangeSynonymToAcceptedTaxonHandlerE4.class);

	private TaxonNameEditorE4 editor;

    private EPartService partService;

    private MApplication application;

    private EModelService modelService;

    @Execute

    public void execute(@Named(IServiceConstants.ACTIVE_PART) MPart activePart,

            @Named(IServiceConstants.ACTIVE_SELECTION) IStructuredSelection selection, EPartService partService,

            EModelService modelService, MApplication application, @Named(IServiceConstants.ACTIVE_SHELL) Shell shell,

            UISynchronize sync) {

        this.modelService = modelService;

        this.application = application;

        this.partService = partService;

        editor = (TaxonNameEditorE4) activePart.getObject();

        TaxonEditorInputE4 input = editor.getEditorInput();

		// Get synonym from selection

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

			logger.error("Selection does not contain a Synonym"); //$NON-NLS-1$

			return;

		}

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

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

		if (!EditorUtil.forceUserSaveE4Editor(editor, shell)) {

			return;

		}

		// Get taxon

		Taxon taxon = input.getTaxon();

		TaxonNode newParentNode = TaxonNodeSelectionDialog.select(shell, editor.getConversationHolder(), Messages.ChangeSynonymToAcceptedTaxonHandler_SELECT_PARENT, null, null, input.getTaxonNode().getClassification());

		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<TaxonName> namesInGroup = group.getTypifiedNames();

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

			ChangeSynonymToAcceptedTaxonOperation operation = new ChangeSynonymToAcceptedTaxonOperation(Messages.ChangeSynonymToAcceptedTaxonHandler_CHANGE_SYN_TO_ACC_TAXON, EditorUtil.getUndoContext(),

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

			AbstractUtility.executeOperation(operation, sync);

		}

	}

	/** {@inheritDoc} */

	@Override

    public boolean postOperation(CdmBase objectAffectedByOperation) {

		// Redraw existing editor

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

		editor.save(AbstractUtility.getMonitor());

		if (objectAffectedByOperation instanceof TaxonNode) {

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

			TaxonNode newNode = (TaxonNode) objectAffectedByOperation;

			EditorUtil.openTaxonNodeE4(newNode.getUuid(), modelService, partService, application);

		}

		return true;

	}

	@Override

    public boolean onComplete() {

		return false;

	}

    @CanExecute

    public boolean canExecute(@Named(IServiceConstants.ACTIVE_SELECTION)IStructuredSelection selection,

            MHandledMenuItem menuItem){

        boolean canExecute = false;

        Object selectedElement = selection.getFirstElement();

        canExecute =

                NameEditorMenuPropertyTester.isNotHomotypicSynonymOfAcceptedTaxon(selectedElement)

                && !NameEditorMenuPropertyTester.isAccepted(selectedElement)

                && !NameEditorMenuPropertyTester.isMisapplication(selectedElement);

        menuItem.setVisible(canExecute);

        return canExecute;

    }

}