/*
 * Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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 General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package build.tools.generatenimbus;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.util.ArrayList;
import java.util.List;

class Layer {
    /** List of shapes in this layer, first shape is painted on top */
    private List<Shape> shapes = new ArrayList<Shape>();

    Layer(XMLStreamReader reader) throws XMLStreamException {
        while (reader.hasNext()) {
            int eventType = reader.next();
            switch (eventType) {
                case XMLStreamReader.START_ELEMENT:
                    switch (reader.getLocalName()) {
                        case "shapes":
                            shapes = new ArrayList<>();
                            break;
                        case "ellipse":
                            shapes.add(new Ellipse(reader));
                            break;
                        case "path":
                            shapes.add(new Path(reader));
                            break;
                        case "rectangle":
                            shapes.add(new Rectangle(reader));
                            break;
                    }
                    break;
                case XMLStreamReader.END_ELEMENT:
                    switch (reader.getLocalName()) {
                        case "layer":
                            return;
                    }
                    break;
            }
        }
    }

    public List<Shape> getShapes() { return shapes; }

    public boolean isEmpty() {
        return shapes.isEmpty();
    }
}