trunk/src/ooxml/testcases/org/apache/poi/xssf/usermodel/charts/TestXSSFChartTitle.java

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
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package org.apache.poi.xssf.usermodel.charts;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import java.io.IOException;
import java.util.List;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Chart;
import org.apache.poi.ss.usermodel.ClientAnchor;
import org.apache.poi.ss.usermodel.Drawing;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.charts.AxisCrosses;
import org.apache.poi.ss.usermodel.charts.AxisPosition;
import org.apache.poi.ss.usermodel.charts.ChartAxis;
import org.apache.poi.ss.usermodel.charts.ChartDataSource;
import org.apache.poi.ss.usermodel.charts.ChartLegend;
import org.apache.poi.ss.usermodel.charts.DataSources;
import org.apache.poi.ss.usermodel.charts.LegendPosition;
import org.apache.poi.ss.usermodel.charts.LineChartData;
import org.apache.poi.ss.usermodel.charts.ValueAxis;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.XSSFTestDataSamples;
import org.apache.poi.xssf.usermodel.XSSFChart;
import org.apache.poi.xssf.usermodel.XSSFDrawing;
import org.apache.poi.xssf.usermodel.XSSFRichTextString;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.junit.Test;

/**
 * Test get/set chart title.
 */
public class TestXSSFChartTitle {
    private Workbook createWorkbookWithChart() {
        Workbook wb = new XSSFWorkbook();
        Sheet sheet = wb.createSheet("linechart");
        final int NUM_OF_ROWS = 3;
        final int NUM_OF_COLUMNS = 10;

        // Create a row and put some cells in it. Rows are 0 based.
        Row row;
        Cell cell;
        for (int rowIndex = 0; rowIndex < NUM_OF_ROWS; rowIndex++) {
            row = sheet.createRow((short) rowIndex);
            for (int colIndex = 0; colIndex < NUM_OF_COLUMNS; colIndex++) {
                cell = row.createCell((short) colIndex);
                cell.setCellValue(colIndex * (rowIndex + 1));
            }
        }

        Drawing<?> drawing = sheet.createDrawingPatriarch();
        ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 10, 15);

        Chart chart = drawing.createChart(anchor);
        ChartLegend legend = chart.getOrCreateLegend();
        legend.setPosition(LegendPosition.TOP_RIGHT);

        LineChartData data = chart.getChartDataFactory().createLineChartData();

        // Use a category axis for the bottom axis.
        ChartAxis bottomAxis = chart.getChartAxisFactory().createCategoryAxis(AxisPosition.BOTTOM);
        ValueAxis leftAxis = chart.getChartAxisFactory().createValueAxis(AxisPosition.LEFT);
        leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);

        ChartDataSource<Number> xs = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(0, 0, 0, NUM_OF_COLUMNS - 1));
        ChartDataSource<Number> ys1 = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(1, 1, 0, NUM_OF_COLUMNS - 1));
        ChartDataSource<Number> ys2 = DataSources.fromNumericCellRange(sheet, new CellRangeAddress(2, 2, 0, NUM_OF_COLUMNS - 1));

        data.addSeries(xs, ys1);
        data.addSeries(xs, ys2);

        chart.plot(data, bottomAxis, leftAxis);

        return wb;
    }

    /**
     * Gets the first chart from the named sheet in the workbook.
     */
    private XSSFChart getChartFromWorkbook(Workbook wb, String sheetName) {
        Sheet sheet = wb.getSheet(sheetName);
        if (sheet instanceof XSSFSheet) {
            XSSFSheet xsheet = (XSSFSheet) sheet;
            XSSFDrawing drawing = xsheet.getDrawingPatriarch();
            if (drawing != null) {
                List<XSSFChart> charts = drawing.getCharts();
                if (charts != null && charts.size() > 0) {
                    return charts.get(0);
                }
            }
        }
        return null;
    }

    @Test
    public void testNewChart() throws IOException {
        Workbook wb = createWorkbookWithChart();
        XSSFChart chart = getChartFromWorkbook(wb, "linechart");
        assertNotNull(chart);
        assertNull(chart.getTitle());
        final String myTitle = "My chart title";
        chart.setTitle(myTitle);
        XSSFRichTextString queryTitle = chart.getTitle();
        assertNotNull(queryTitle);
        assertEquals(myTitle, queryTitle.toString());
        wb.close();
    }

    @Test
    public void testExistingChartWithTitle() throws IOException {
        Workbook wb = XSSFTestDataSamples.openSampleWorkbook("chartTitle_withTitle.xlsx");
        XSSFChart chart = getChartFromWorkbook(wb, "Sheet1");
        assertNotNull(chart);
        XSSFRichTextString originalTitle = chart.getTitle();
        assertNotNull(originalTitle);
        final String myTitle = "My chart title";
        assertFalse(myTitle.equals(originalTitle.toString()));
        chart.setTitle(myTitle);
        XSSFRichTextString queryTitle = chart.getTitle();
        assertNotNull(queryTitle);
        assertEquals(myTitle, queryTitle.toString());
        wb.close();
    }

    @Test
    public void testExistingChartNoTitle() throws IOException {
        Workbook wb = XSSFTestDataSamples.openSampleWorkbook("chartTitle_noTitle.xlsx");
        XSSFChart chart = getChartFromWorkbook(wb, "Sheet1");
        assertNotNull(chart);
        assertNull(chart.getTitle());
        final String myTitle = "My chart title";
        chart.setTitle(myTitle);
        XSSFRichTextString queryTitle = chart.getTitle();
        assertNotNull(queryTitle);
        assertEquals(myTitle, queryTitle.toString());
        wb.close();
    }
}