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.modeling.ui.modelBrowser2.contributions;
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14 import org.eclipse.jface.resource.ImageDescriptor;
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15 import org.simantics.browsing.ui.GraphExplorer;
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16 import org.simantics.browsing.ui.swt.ImagerContributor;
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17 import org.simantics.db.ReadGraph;
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18 import org.simantics.db.Resource;
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19 import org.simantics.db.exception.DatabaseException;
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20 import org.simantics.db.exception.ServiceException;
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21 import org.simantics.modeling.ui.modelBrowser2.model.RelationViewNode;
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22 import org.simantics.operation.Layer0X;
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23 import org.simantics.ui.icons.ImageDescriptorProvider;
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24 import org.simantics.utils.datastructures.cache.ProvisionException;
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27 * An imager contribution for giving {@link RelationViewNode} instances an image
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28 * in a {@link GraphExplorer} based on the relation the :RelationView instance
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36 * L0.AppliesRelation R
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39 * it will attempt to adapt <code>R</code> into an
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40 * {@link ImageDescriptorProvider} and resolve the {@link ImageDescriptor} from
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43 * @author Tuukka Lehtonen
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45 public class RelationViewImager extends ImagerContributor<RelationViewNode> {
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48 public ImageDescriptor getDescriptor(ReadGraph graph, RelationViewNode input) throws DatabaseException {
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49 Resource relation = graph.getPossibleObject(input.resource, Layer0X.getInstance(graph).AppliesRelation);
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50 if (relation == null)
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53 ImageDescriptorProvider provider = graph.getPossibleAdapter(relation, ImageDescriptorProvider.class);
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54 if (provider == null)
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58 return provider.get();
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59 } catch (ProvisionException e) {
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60 throw new ServiceException(e);
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