bundles/common/org.eclipse.apogy.common.topology.ui/src/org/eclipse/apogy/common/topology/ui/adapters/OBJGraphicsContextAdapter.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency
 * 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:
 *     Pierre Allard, 
 *     Regent L'Archeveque,
<<<<<<< HEAD
 *     Sebastien Gemme
 * 
=======
 *     Sebastien Gemme  - initial API and implementation
 *     
>>>>>>> refs/heads/eclipse_pa
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.common.topology.ui.adapters;

import org.eclipse.apogy.common.topology.ApogyCommonTopologyFactory;
import org.eclipse.apogy.common.topology.GroupNode;
import org.eclipse.apogy.common.topology.URLNode;
import org.eclipse.apogy.common.topology.ui.ApogyCommonTopologyUIFactory;
import org.eclipse.apogy.common.topology.ui.GraphicsContext;
import org.eclipse.apogy.common.topology.ui.GraphicsContextAdapter;
import org.eclipse.core.resources.IFile;

public class OBJGraphicsContextAdapter implements GraphicsContextAdapter {

	public final static String[] OBJ_FILE_EXTENSION = new String[] { "obj" };

	public OBJGraphicsContextAdapter() {
	}

	@Override
	public boolean isAdapterFor(Object obj) {
		boolean isAdapter = false;

		// We respond to IFile selection ending with the supported extensions.
		if (obj instanceof IFile) {
			IFile file = (IFile) obj;
			isAdapter = isExtensionSupported(getFileExtension(file.getName()), OBJ_FILE_EXTENSION);
		}

		return isAdapter;
	}

	@Override
	public GraphicsContext getAdapter(Object obj, Object context) {
		GraphicsContext grContext = null;

		if (isAdapterFor(obj)) {
			IFile file = (IFile) obj;
			URLNode node = ApogyCommonTopologyFactory.eINSTANCE.createURLNode();
			node.setDescription(file.getName());

			node.setUrl("file://" + file.getLocation().toOSString());

			GroupNode root = ApogyCommonTopologyFactory.eINSTANCE.createGroupNode();
			root.getChildren().add(node);

			grContext = ApogyCommonTopologyUIFactory.eINSTANCE.createGraphicsContext();
			grContext.setTopology(root);
		}

		return grContext;
	}

	@Override
	public Class<?> getAdaptedClass() {
		return IFile.class;
	}

	/**
	 * Returns the file extebsion of a file name.
	 * 
	 * @param url The url as a string.
	 * @return The file extension
	 */
	private String getFileExtension(String url) {
		String fileExtension = new String();
		String fileName = url;
		int index = fileName.lastIndexOf(".");
		if (index >= 0) {
			fileExtension = fileName.substring(index);
		}

		return fileExtension;
	}

	/**
	 * Return whether or not the file extension is supported.
	 * 
	 * @param extension     The actual file extension.
	 * @param extensionList The list of file extension supported
	 * @return True if the specified file extension is part of the supported
	 *         extensions, false otherwise.
	 */
	private boolean isExtensionSupported(String extension, String[] extensionList) {
		boolean supported = false;

		int i = 0;
		while ((!supported) && (i < extensionList.length)) {
			String supportedExtension = extensionList[i];
			if (extension.endsWith(supportedExtension)) {
				supported = true;
			} else {
				i++;
			}
		}

		return supported;
	}
}