examples/org.eclipse.graphiti.examples.composite/src/org/eclipse/graphiti/examples/composite/view/DiagramCompositeViewExample.java

/*********************************************************************
* Copyright (c) 2013, 2019 SRC
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which is available at https://www.eclipse.org/legal/epl-2.0/
*
* Contributors:
*    pjpaulin - initial API, implementation and documentation
*
* SPDX-License-Identifier: EPL-2.0
**********************************************************************/
package org.eclipse.graphiti.examples.composite.view;

import org.eclipse.emf.common.util.URI;
import org.eclipse.graphiti.ui.editor.DiagramComposite;
import org.eclipse.graphiti.ui.editor.DiagramEditorInput;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.part.ViewPart;

/**
 * A very simple and basic example for a view hosting a static diagram. The
 * diagram file is part of this plugin and referenced via a static URI. The
 * diagram allows basic modifications of the diagram but does not care about
 * persisting them.
 */
public class DiagramCompositeViewExample extends ViewPart {

	private DiagramComposite diagramComposite;

	@Override
	public void createPartControl(Composite parent) {
		diagramComposite = new DiagramComposite(this, parent, SWT.NONE);
		diagramComposite.setLayout(new FillLayout());
		diagramComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

		URI uri = URI.createURI("platform:/plugin/org.eclipse.graphiti.examples.composite/test.diagram#/0");
		diagramComposite.setInput(new DiagramEditorInput(uri,
				"org.eclipse.graphiti.examples.tutorial.diagram.TutorialDiagramTypeProvider"));
	}

	@Override
	public void setFocus() {
		diagramComposite.setFocus();
	}

	public Object getAdapter(@SuppressWarnings("rawtypes") Class type) {
		Object returnObj = null;

		if (diagramComposite != null && !diagramComposite.isDisposed()) {
			returnObj = diagramComposite.getAdapter(type);
		}

		if (returnObj != null) {
			return returnObj;
		}

		return super.getAdapter(type);
	}
}