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/*******************************************************************************
* Copyright (c) 2013, 2016 CEA LIST, Christian W. Damus, and others.
*
* 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:
* Cedric Dumoulin - cedric.dumoulin@lifl.fr
* Christian W. Damus - bug 485220
*
******************************************************************************/
package org.eclipse.papyrus.layers3.ui.utils;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.gmf.runtime.diagram.ui.resources.editor.parts.DiagramDocumentEditor;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.papyrus.infra.core.sasheditor.editor.ISashWindowsContainer;
import org.eclipse.papyrus.infra.core.services.ServiceException;
import org.eclipse.papyrus.infra.ui.util.ServiceUtilsForWorkbenchPage;
import org.eclipse.papyrus.layers.stackmodel.NotFoundException;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
/**
* Set of utilities methods for handlers {@link AbstractHandler}.
*
* @author cedric dumoulin
*
*/
public class HandlersUtils {
/**
* Constructor.
*
*/
public HandlersUtils() {
// TODO Auto-generated constructor stub
}
/**
* Get the diagram associated to the currently selected editor.
* Throw events if no diagram is associated. <br>
* Warnings: This method is for handlers only. It can return unpredictable
* results if used during the application initialization phase.
*
* @return
* @throws NotFoundException
* @throws ServiceException
*/
public Diagram getDiagramFromCurrentEditor() throws ServiceException, NotFoundException {
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
if (page == null) {
throw new NotFoundException("No active IWorkbenchPage");
}
IEditorPart editor = ServiceUtilsForWorkbenchPage.getInstance().getService(ISashWindowsContainer.class, page).getActiveEditor();
if (!(editor instanceof DiagramDocumentEditor)) {
throw new NotFoundException("Selected editor do not contains Diagram");
}
DiagramDocumentEditor diagramEditor = (DiagramDocumentEditor) editor;
Diagram diagram = diagramEditor.getDiagram();
if (diagram == null) {
throw new NotFoundException("Selected editor do not contains Diagram");
}
return diagram;
}
}
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