From 263343592f06c8b39797ee453cb244be49f9bc70 Mon Sep 17 00:00:00 2001
From: Patrick Plitzner <p.plitzner@bgbm.org>
Date: Wed, 7 Sep 2016 15:47:58 +0200
Subject: [PATCH] fix #5801 Fix exceptions during selection propagation for
 concept relationship view

 - the internal model of the view has changed from a list of
TaxonRelationShip objects to a Map<TaxonRelationShip, Taxon>
---
 .../editor/view/concept/ConceptViewPart.java  | 39 +++++++++++++++++--
 1 file changed, 36 insertions(+), 3 deletions(-)

diff --git a/eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/concept/ConceptViewPart.java b/eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/concept/ConceptViewPart.java
index 074094054..015600a06 100644
--- a/eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/concept/ConceptViewPart.java
+++ b/eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/concept/ConceptViewPart.java
@@ -10,9 +10,12 @@
 
 package eu.etaxonomy.taxeditor.editor.view.concept;
 
+import java.util.Map.Entry;
+
 import org.eclipse.jface.action.GroupMarker;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ListViewer;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.Viewer;
@@ -26,6 +29,7 @@ import org.eclipse.ui.IWorkbenchActionConstants;
 import org.eclipse.ui.IWorkbenchPart;
 
 import eu.etaxonomy.cdm.model.taxon.Taxon;
+import eu.etaxonomy.cdm.model.taxon.TaxonRelationship;
 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditor;
 import eu.etaxonomy.taxeditor.editor.MultiPageTaxonEditor;
 import eu.etaxonomy.taxeditor.editor.key.AbstractGraphKeyEditor;
@@ -40,14 +44,18 @@ import eu.etaxonomy.taxeditor.view.AbstractCdmEditorViewPart;
  * @created Jan 24, 2011
  * @version 1.0
  */
-public class ConceptViewPart extends AbstractCdmEditorViewPart implements IPartContentHasDetails, IPartContentHasSupplementalData{
+public class ConceptViewPart extends AbstractCdmEditorViewPart 
+implements IPartContentHasDetails, IPartContentHasSupplementalData{
 
 	public static final String ID = "eu.etaxonomy.taxeditor.editor.view.concept";
 
-	private ListViewer viewer;
+	private ConceptRelationViewer viewer;
 
 	@Override
 	protected void selectionChanged_internal(IWorkbenchPart part, ISelection selection) {
+		if(part == this){
+		    return;
+		}
 		if(AbstractUtility.getActiveEditor() == null){
 			showEmptyPage();
 			return;
@@ -95,7 +103,7 @@ public class ConceptViewPart extends AbstractCdmEditorViewPart implements IPartC
 
 	@Override
 	public void createViewer(Composite parent) {
-		viewer = new ListViewer(parent);
+		viewer = new ConceptRelationViewer(parent);
 
 		viewer.setContentProvider(new ConceptContentProvider());
 		viewer.setLabelProvider(new ConceptLabelProvider());
@@ -126,4 +134,29 @@ public class ConceptViewPart extends AbstractCdmEditorViewPart implements IPartC
 		super.changed(object);
 	}
 
+	private class ConceptRelationViewer extends ListViewer {
+
+		public ConceptRelationViewer(Composite parent) {
+			super(parent);
+		} 
+		
+		@Override
+		public ISelection getSelection() {
+			ISelection selection = super.getSelection();
+			if(selection instanceof IStructuredSelection && !selection.isEmpty()){
+				Object firstElement = ((IStructuredSelection) selection).getFirstElement();
+				TaxonRelationship taxonRelationship = ((Entry<TaxonRelationship, Taxon>)firstElement).getKey();
+				return new StructuredSelection(taxonRelationship);
+				
+			}
+			return selection;
+		}
+		
+		@Override
+		public void setSelection(ISelection selection) {
+			super.setSelection(selection);
+		}
+
+	}
+
 }
-- 
2.34.1