1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.spreadsheet.ui;
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14 import java.awt.geom.AffineTransform;
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15 import java.util.Collections;
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16 import java.util.List;
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18 import org.eclipse.jface.viewers.IStructuredSelection;
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19 import org.simantics.databoard.Bindings;
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20 import org.simantics.databoard.util.URIStringUtils;
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21 import org.simantics.db.ReadGraph;
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22 import org.simantics.db.Resource;
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23 import org.simantics.db.Session;
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24 import org.simantics.db.exception.DatabaseException;
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25 import org.simantics.db.request.Read;
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26 import org.simantics.diagram.adapter.GraphToDiagramSynchronizer;
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27 import org.simantics.diagram.participant.PopulateSelectionDropParticipant;
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28 import org.simantics.g2d.dnd.ElementClassDragItem;
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29 import org.simantics.g2d.element.ElementHints;
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30 import org.simantics.layer0.Layer0;
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31 import org.simantics.spreadsheet.resource.SpreadsheetResource;
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32 import org.simantics.utils.ui.ISelectionUtils;
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34 public class PopulateSheetDropParticipant extends PopulateSelectionDropParticipant {
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36 public PopulateSheetDropParticipant(GraphToDiagramSynchronizer synchronizer) {
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37 super(synchronizer);
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41 public List<ElementClassDragItem> getElements(Session session, IStructuredSelection selection) throws DatabaseException {
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43 final Resource resource = ISelectionUtils.filterSingleSelection(selection, Resource.class);
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44 if(resource == null) return Collections.emptyList();
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46 return session.syncRequest(new Read<List<ElementClassDragItem>>() {
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49 public List<ElementClassDragItem> perform(ReadGraph graph) throws DatabaseException {
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51 SpreadsheetResource sr = SpreadsheetResource.getInstance(graph);
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52 if(graph.isInstanceOf(resource, sr.Spreadsheet)) {
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53 Layer0 L0 = Layer0.getInstance(graph);
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54 ElementClassDragItem item = new ElementClassDragItem(SheetFactory.createSheetClass(sr.SpreadsheetElement));
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55 item.getHintContext().setHint(SheetClass.KEY_SHEET, resource);
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56 String rvi = "/" + URIStringUtils.escape((String)graph.getPossibleRelatedValue(resource, L0.HasName, Bindings.STRING));
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57 item.getHintContext().setHint(SheetClass.KEY_RVI, rvi);
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58 item.getHintContext().setHint(ElementHints.KEY_TRANSFORM, AffineTransform.getScaleInstance(1,1));
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59 return Collections.singletonList(item);
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61 return Collections.emptyList();
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