/*******************************************************************************
* Copyright (c) 2012-2015 Codenvy, S.A.
* 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:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.corext.format;
import org.eclipse.che.ide.ext.java.shared.dto.Change;
import org.eclipse.jdt.core.formatter.CodeFormatter;
import org.eclipse.jdt.internal.corext.util.CodeFormatterUtil;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.text.edits.TextEdit;
import java.util.List;
/**
* @author Roman Nikitenko
*/
public class Formatter {
/**
* Creates edits that describe how to format the given string.
* Returns the changes required to format source.
*
* @param content
* The content to format
* @param offset
* The given offset to start recording the edits (inclusive).
* @param length
* the given length to stop recording the edits (exclusive).
* @return <code>List<Change></code> describing the changes required to format source
* @throws IllegalArgumentException
* If the offset and length are not inside the string, a IllegalArgumentException is thrown.
*/
public List<Change> getFormatChanges(String content, int offset, int length) throws BadLocationException, IllegalArgumentException {
IDocument document = new Document(content);
DocumentChangeListener documentChangeListener = new DocumentChangeListener(document);
TextEdit textEdit = CodeFormatterUtil.format2(CodeFormatter.K_COMPILATION_UNIT, content, offset, length, 0, null, null);
textEdit.apply(document);
return documentChangeListener.getChanges();
}
}