Copyright (c) 2000, 2009 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, 2009 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.core;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;

public class ExternalJavaProject extends JavaProject {

	/*
	 * Note this name can be surfaced in the UI (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=128258)
	 */
	public static final String EXTERNAL_PROJECT_NAME = " "; //$NON-NLS-1$

	public ExternalJavaProject(IClasspathEntry[] rawClasspath) {
		super(ResourcesPlugin.getWorkspace().getRoot().getProject(EXTERNAL_PROJECT_NAME), JavaModelManager.getJavaModelManager().getJavaModel());
		try {
			getPerProjectInfo().setRawClasspath(rawClasspath, defaultOutputLocation(), JavaModelStatus.VERIFIED_OK/*no .classpath format problem*/);
		} catch (JavaModelException e) {
			// getPerProjectInfo() never throws JavaModelException for an ExternalJavaProject
		}
	}

	@Override
	public boolean equals(Object o) {
		return this == o;
	}

	@Override
	public boolean exists() {
		// external project never exists
		return false;
	}

	@Override
	public String getOption(String optionName, boolean inheritJavaCoreOptions) {
		if (JavaCore.COMPILER_PB_FORBIDDEN_REFERENCE.equals(optionName)
				|| JavaCore.COMPILER_PB_DISCOURAGED_REFERENCE.equals(optionName))
			return JavaCore.IGNORE;
		return super.getOption(optionName, inheritJavaCoreOptions);
	}

	@Override
	public boolean isOnClasspath(IJavaElement element) {
		// since project is external, no element is on classpath (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=61013#c16)
		return false;
	}

	@Override
	public boolean isOnClasspath(IResource resource) {
		// since project is external, no resource is on classpath (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=61013#c16)
		return false;
	}

	@Override
	protected IStatus validateExistence(IResource underlyingResource) {
		// allow opening of external project
		return JavaModelStatus.VERIFIED_OK;
	}
}