/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package net.sourceforge.phpdt.corext.refactoring.nls;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.jface.util.Assert;

public class NLSLine {

	private int fLineNumber;

	private List fElements;

	public NLSLine(int lineNumber) {
		fLineNumber = lineNumber;
		Assert.isTrue(fLineNumber >= 0);
		fElements = new ArrayList();
	}

	public int getLineNumber() {
		return fLineNumber;
	}

	/**
	 * Adds a NLS element to this line.
	 */
	public void add(NLSElement element) {
		Assert.isNotNull(element);
		fElements.add(element);
	}

	public NLSElement[] getElements() {
		return (NLSElement[]) fElements
				.toArray(new NLSElement[fElements.size()]);
	}

	public NLSElement get(int index) {
		return (NLSElement) fElements.get(index);
	}

	public boolean exists(int index) {
		return index >= 0 && index < fElements.size();
	}

	public int size() {
		return fElements.size();
	}

	/*
	 * non javaDoc only for debugging
	 * 
	 * @see Object#toString()
	 */
	public String toString() {
		StringBuffer result = new StringBuffer();
		result.append("Line: " + fLineNumber + "\n"); //$NON-NLS-2$ //$NON-NLS-1$
		for (Iterator iter = fElements.iterator(); iter.hasNext();) {
			result.append("\t"); //$NON-NLS-1$
			result.append(iter.next().toString());
			result.append("\n"); //$NON-NLS-1$
		}
		return result.toString();
	}
}
