/*******************************************************************************
 * Copyright (c) 2005, 2016 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.corext.refactoring.scripting;

import java.util.Map;

import org.eclipse.ltk.core.refactoring.Refactoring;
import org.eclipse.ltk.core.refactoring.RefactoringDescriptor;
import org.eclipse.ltk.core.refactoring.RefactoringStatus;
import org.eclipse.ltk.core.refactoring.participants.RenameRefactoring;

import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.refactoring.IJavaRefactorings;
import org.eclipse.jdt.core.refactoring.descriptors.JavaRefactoringDescriptor;

import org.eclipse.jdt.internal.core.refactoring.descriptors.RefactoringSignatureDescriptorFactory;
import org.eclipse.jdt.internal.corext.refactoring.JavaRefactoringArguments;
import org.eclipse.jdt.internal.corext.refactoring.JavaRefactoringDescriptorUtil;
import org.eclipse.jdt.internal.corext.refactoring.RefactoringCoreMessages;
import org.eclipse.jdt.internal.corext.refactoring.rename.JavaRenameProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.MethodChecks;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameNonVirtualMethodProcessor;
import org.eclipse.jdt.internal.corext.refactoring.rename.RenameVirtualMethodProcessor;
import org.eclipse.jdt.internal.corext.util.Messages;

import org.eclipse.jdt.internal.core.manipulation.util.BasicElementLabels;

/**
 * Refactoring contribution for the rename method refactoring.
 *
 * @since 3.2
 */
public final class RenameMethodRefactoringContribution extends JavaUIRefactoringContribution {

	@Override
	public Refactoring createRefactoring(JavaRefactoringDescriptor descriptor, RefactoringStatus status) throws JavaModelException {
		JavaRefactoringArguments arguments= new JavaRefactoringArguments(descriptor.getProject(), retrieveArgumentMap(descriptor));

		String input= arguments.getAttribute(JavaRefactoringDescriptorUtil.ATTRIBUTE_INPUT);
		IMethod method= (IMethod) JavaRefactoringDescriptorUtil.handleToElement(arguments.getProject(), input);
		if (method == null) {
			status.addFatalError(Messages.format(RefactoringCoreMessages.RenameMethodRefactoringContribution_could_not_create, new Object[] { BasicElementLabels.getResourceName(arguments.getProject()), input }));
			return null;
		}

		JavaRenameProcessor processor;
		if (MethodChecks.isVirtual(method)) {
			processor= new RenameVirtualMethodProcessor(method, arguments, status);
		} else {
			processor= new RenameNonVirtualMethodProcessor(method, arguments, status);
		}
		return new RenameRefactoring(processor);
	}

	@Override
	public RefactoringDescriptor createDescriptor() {
		return RefactoringSignatureDescriptorFactory.createRenameJavaElementDescriptor(IJavaRefactorings.RENAME_METHOD);
	}

	@Override
	public RefactoringDescriptor createDescriptor(String id, String project, String description, String comment, Map<String, String> arguments, int flags) {
		return RefactoringSignatureDescriptorFactory.createRenameJavaElementDescriptor(id, project, description, comment, arguments, flags);
	}
}
