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.

 */

import javax.inject.Named;

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

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

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

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

import eu.etaxonomy.taxeditor.editor.view.media.e4.MediaViewPartE4;

import eu.etaxonomy.taxeditor.model.AbstractUtility;

import eu.etaxonomy.taxeditor.workbench.WorkbenchUtility;

public class MoveImageUpInListHandler  {

    @Execute

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

            @Named(IServiceConstants.ACTIVE_SELECTION) Media media,

            MMenuItem menuItem) {

        MediaViewPartE4 mediaView = (MediaViewPartE4) activePart.getObject();

        IEditorPart editor = null;

        Object e4WrappedPart = WorkbenchUtility.getE4WrappedPart(mediaView.getSelectionProvidingPart());

        if (e4WrappedPart instanceof FormEditor) {

            editor = (FormEditor) e4WrappedPart;

            IEditorInput input = editor.getEditorInput();

            if (input instanceof TaxonEditorInput) {

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

                ISelection selection = mediaView.getViewer().getSelection();

                if (selection instanceof TreeSelection) {

                    TreePath[] paths = ((TreeSelection) selection).getPaths();

                    int count = paths[0].getSegmentCount();

                    DescriptionBase element = null;

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

                        if (paths[0].getSegment(i) instanceof DescriptionBase) {

                            element = (DescriptionBase) paths[0].getSegment(i);

                            break;

                        }

                    }

                    AbstractPostOperation operation = null;

                    // TODO use undo context specific to editor

                    operation = new MoveMediaInListOperation(menuItem.getLocalizedLabel(),

                            EditorUtil.getUndoContext(), taxon, element, media, MoveMediaInListOperation.UP, mediaView);

                    AbstractUtility.executeOperation(operation);

                }

            }

        }

    }