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/*
 *  ====================================================================
 *    Licensed to the Apache Software Foundation (ASF) under one or more
 *    contributor license agreements.  See the NOTICE file distributed with
 *    this work for additional information regarding copyright ownership.
 *    The ASF licenses this file to You under the Apache License, Version 2.0
 *    (the "License"); you may not use this file except in compliance with
 *    the License.  You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 * ====================================================================
 */

package org.apache.poi.xslf.usermodel;

import java.io.IOException;

import org.apache.poi.ooxml.POIXMLFactory;
import org.apache.poi.ooxml.POIXMLRelation;
import org.apache.poi.openxml4j.opc.PackagePart;
import org.apache.poi.util.Beta;
import org.apache.poi.xddf.usermodel.chart.XDDFChart;
import org.apache.xmlbeans.XmlException;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTTitle;
import org.openxmlformats.schemas.drawingml.x2006.main.CTTextBody;

/**
 * Represents a Chart in a .pptx presentation
 */
@Beta
public final class XSLFChart extends XDDFChart {

    /**
     * Construct a PresentationML chart.
     */
    protected XSLFChart() {
        super();
    }

    /**
     * Construct a PresentationML chart from a package part.
     *
     * @param part the package part holding the chart data,
     *             the content type must be application/vnd.openxmlformats-officedocument.drawingml.chart+xml
     * @since POI 3.14-Beta1
     */
    protected XSLFChart(PackagePart part) throws IOException, XmlException {
        super(part);
    }

    @Override
    protected POIXMLRelation getChartRelation() {
        return XSLFRelation.CHART;
    }

    @Override
    protected POIXMLRelation getChartWorkbookRelation() {
        return XSLFRelation.WORKBOOK;
    }

    @Override
    protected POIXMLFactory getChartFactory() {
        return XSLFFactory.getInstance();
    }

    public XSLFTextShape getTitleShape() {
        if (!chart.isSetTitle()) {
            chart.addNewTitle();
        }
        final CTTitle title = chart.getTitle();
        if (title.getTx() != null && title.getTx().isSetRich()) {
            return new XSLFTextShape(title, null) {
                @Override
                protected CTTextBody getTextBody(boolean create) {
                    return title.getTx().getRich();
                }
            };
        } else {
            return new XSLFTextShape(title, null) {
                @Override
                protected CTTextBody getTextBody(boolean create) {
                    return title.getTxPr();
                }
            };
        }
    }
}