/*
 * Copyright (c) 2003-2004 Christopher Lenz 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:
 *     Christopher Lenz - initial API and implementation
 * 
 * $Id: AbstractProblemReporter.java,v 1.1 2004-09-02 18:07:13 jsurfer Exp $
 */

package net.sourceforge.phpeclipse.css.core.internal.parser;

import net.sourceforge.phpeclipse.css.core.internal.CssCoreMessages;
import net.sourceforge.phpeclipse.css.core.parser.IProblem;
import net.sourceforge.phpeclipse.css.core.parser.IProblemCollector;
import net.sourceforge.phpeclipse.css.core.parser.IProblemReporter;

import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;

public abstract class AbstractProblemReporter implements IProblemReporter {

	// Instance Variables ------------------------------------------------------

	protected IDocument document;

	protected IProblemCollector problemCollector = new IProblemCollector() {
		public void addProblem(IProblem problem) {
			// do nothing
		}
	};

	// IProblemReporter Implementation -----------------------------------------

	/*
	 * @see IProblemReporter#setProblemCollector(IProblemCollector)
	 */
	public void setProblemCollector(IProblemCollector problemCollector) {
		this.problemCollector = problemCollector;
	}

	// Protected Methods -------------------------------------------------------

	protected final IProblem createError(String id, IRegion region) {
		return createError(id, new String[0], region);
	}

	protected final IProblem createError(String id, String arg,
		IRegion region) {
		return createError(id, new String[] {arg}, region);
	}

	protected final IProblem createError(String id, String args[],
		IRegion region) {
		return createProblem(id, args, region, true);
	}

	protected final IProblem createWarning(String id, IRegion region) {
		return createWarning(id, new String[0], region);
	}

	protected final IProblem createWarning(String id, String arg,
		IRegion region) {
		return createWarning(id, new String[] {arg}, region);
	}

	protected final IProblem createWarning(String id, String args[],
		IRegion region) {
		return createProblem(id, args, region, false);
	}

	protected final IProblem reportError(String id, IRegion region) {
		return reportProblem(createError(id, region));
	}

	protected final IProblem reportError(String id, String arg,
		IRegion region) {
		return reportProblem(createError(id, arg, region));
	}

	protected final IProblem reportError(String id, String args[],
		IRegion region) {
		return reportProblem(createError(id, args, region));
	}

	protected final IProblem reportWarning(String id, IRegion region) {
		return reportProblem(createWarning(id, region));
	}

	protected final IProblem reportWarning(String id, String arg,
		IRegion region) {
		return reportProblem(createWarning(id, arg, region));
	}

	protected final IProblem reportWarning(String id, String args[],
		IRegion region) {
		return reportProblem(createWarning(id, args, region));
	}

	protected final IProblem reportProblem(IProblem problem) {
		problemCollector.addProblem(problem);
		return problem;
	}

	protected final void setDocument(IDocument document) {
		this.document = document;
	}

	// Private Methods ---------------------------------------------------------

	private IProblem createProblem(String id, String args[],
		IRegion region, boolean error) {
		String message = CssCoreMessages.getString(
			"CssParser.problem." + id, args); //$NON-NLS-1$
		int offset = region.getOffset();
		int lineNumber = -1;
		try {
			lineNumber = document.getLineOfOffset(offset);
		} catch (BadLocationException e) {
			// ignore
		}
		return new DefaultProblem(id, message, null, offset,
			offset + region.getLength(), lineNumber, error);
	}

}