Copyright (c) 2000, 2015 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2015 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.launching;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Path;
import org.eclipse.debug.core.sourcelookup.ISourceContainer;
import org.eclipse.debug.core.sourcelookup.containers.AbstractSourceContainerTypeDelegate;
import org.eclipse.jdt.launching.sourcelookup.containers.ClasspathVariableSourceContainer;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

Classpath variable source container type.
Since:
3.0/**
 * Classpath variable source container type.
 *
 * @since 3.0
 */
public class ClasspathVariableSourceContainerTypeDelegate extends AbstractSourceContainerTypeDelegate {

	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.core.sourcelookup.ISourceContainerTypeDelegate#createSourceContainer(java.lang.String)
	 */
	@Override
	public ISourceContainer createSourceContainer(String memento) throws CoreException {
		Node node = parseDocument(memento);
		if (node.getNodeType() == Node.ELEMENT_NODE) {
			Element element = (Element)node;
			if ("classpathVariable".equals(element.getNodeName())) { //$NON-NLS-1$
				String string = element.getAttribute("path"); //$NON-NLS-1$
				if (string == null || string.length() == 0) {
					abort(LaunchingMessages.ClasspathVariableSourceContainerTypeDelegate_5, null);
				}
				return new ClasspathVariableSourceContainer(new Path(string));
			}
			abort(LaunchingMessages.ClasspathVariableSourceContainerTypeDelegate_6, null);
		}
		abort(LaunchingMessages.ClasspathVariableSourceContainerTypeDelegate_7, null);
		return null;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.debug.internal.core.sourcelookup.ISourceContainerTypeDelegate#getMemento(org.eclipse.debug.internal.core.sourcelookup.ISourceContainer)
	 */
	@Override
	public String getMemento(ISourceContainer container) throws CoreException {
		ClasspathVariableSourceContainer var =  (ClasspathVariableSourceContainer) container;
		Document document = newDocument();
		Element element = document.createElement("classpathVariable"); //$NON-NLS-1$
		element.setAttribute("path", var.getPath().toString()); //$NON-NLS-1$
		document.appendChild(element);
		return serializeDocument(document);
	}
}