/*
 * Copyright 2010, 2011, 2012 mapsforge.org
 *
 * This program is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.mapsforge.applications.android.advancedmapviewer.filefilter;

import java.io.File;
import java.io.IOException;

import javax.xml.parsers.ParserConfigurationException;

import org.mapsforge.graphics.android.AndroidGraphics;
import org.mapsforge.map.reader.header.FileOpenResult;
import org.mapsforge.map.rendertheme.ExternalRenderTheme;
import org.mapsforge.map.rendertheme.XmlRenderTheme;
import org.mapsforge.map.rendertheme.rule.RenderThemeHandler;
import org.xml.sax.SAXException;

/**
 * Accepts all valid render theme XML files.
 */
public final class ValidRenderTheme implements ValidFileFilter {
	private FileOpenResult fileOpenResult;

	@Override
	public boolean accept(File file) {
		try {
			XmlRenderTheme xmlRenderTheme = new ExternalRenderTheme(file);
			RenderThemeHandler.getRenderTheme(AndroidGraphics.INSTANCE, xmlRenderTheme);
			this.fileOpenResult = FileOpenResult.SUCCESS;
		} catch (ParserConfigurationException e) {
			this.fileOpenResult = new FileOpenResult(e.getMessage());
		} catch (SAXException e) {
			this.fileOpenResult = new FileOpenResult(e.getMessage());
		} catch (IOException e) {
			this.fileOpenResult = new FileOpenResult(e.getMessage());
		}

		return this.fileOpenResult.isSuccess();
	}

	@Override
	public FileOpenResult getFileOpenResult() {
		return this.fileOpenResult;
	}
}