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/*******************************************************************************
* Copyright (c) 2011 AtoS
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Anass RADOUANI (AtoS)
*******************************************************************************/
package org.eclipse.papyrus.infra.gmfdiag.navigation.handlers;
import java.util.Collections;
import java.util.List;
import java.util.Vector;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.papyrus.commands.wrappers.GMFtoEMFCommandWrapper;
import org.eclipse.papyrus.infra.core.editor.CoreMultiDiagramEditor;
import org.eclipse.papyrus.infra.core.utils.OpenDiagramCommand;
import org.eclipse.papyrus.infra.gmfdiag.common.DiagramsUtil;
import org.eclipse.papyrus.infra.gmfdiag.navigation.Activator;
import org.eclipse.papyrus.infra.gmfdiag.navigation.utils.MultiDiagramDialog;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.jface.window.Window;
/**
* handler for Up command
*
*/
public class TopNavigateHandler extends AbstractHandler {
private IEditorPart editor;
public Object execute(ExecutionEvent event) throws ExecutionException {
editor = HandlerUtil.getActiveEditor(event);
if(editor instanceof CoreMultiDiagramEditor) {
CoreMultiDiagramEditor papyrusEditor = (CoreMultiDiagramEditor)editor;
EObject parent = papyrusEditor.getDiagram().getElement().eContainer();
List<List<Diagram>> diagramsTemp = new Vector<List<Diagram>>();
List<Diagram> diagrams = Collections.emptyList();
List<Diagram> associatedDiag = Collections.emptyList();
if(parent != null) {
while(parent != null) {
associatedDiag = DiagramsUtil.getAssociatedDiagrams(parent, null);
if(!associatedDiag.isEmpty()) {
diagramsTemp.add(associatedDiag);
}
parent = parent.eContainer();
}
while(diagrams.size() == 0 && diagramsTemp.size() != 0) {
diagrams = diagramsTemp.get(diagramsTemp.size() - 1);
diagramsTemp.remove(diagramsTemp.size() - 1);
}
openDialog(papyrusEditor, diagrams);
}
}
return null;
}
/**
* open the diagram if there is just one or open a dialog to choose the
* diagram to open if there is more than one
*
* @param papyrusEditor
* @param diagrams
*/
private void openDialog(CoreMultiDiagramEditor papyrusEditor, List<Diagram> diagrams) {
if(diagrams != null) {
if(diagrams.size() == 1) {
openDiagram(papyrusEditor, diagrams.get(0));
} else if(diagrams.size() > 1) {
MultiDiagramDialog multiDiagramDialog = new MultiDiagramDialog(Activator.getActiveWorkbenchShell(), diagrams);
if(multiDiagramDialog.open() == Window.OK) {
openDiagram(papyrusEditor, diagrams.get(multiDiagramDialog.getSelectedDiagram()));
}
}
}
}
/**
* open a dialog to choose which diagram have to be opened
*
* @param papyrusEditor
* @param diagram
*/
private void openDiagram(CoreMultiDiagramEditor papyrusEditor, Diagram diagram) {
if(papyrusEditor.getEditingDomain() instanceof TransactionalEditingDomain) {
TransactionalEditingDomain domain = (TransactionalEditingDomain)papyrusEditor.getEditingDomain();
OpenDiagramCommand openDiagramCommand = new OpenDiagramCommand(domain, diagram);
domain.getCommandStack().execute(new GMFtoEMFCommandWrapper(openDiagramCommand));
}
}
}
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