Remove chart title

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1875978 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xddf/usermodel/chart/XDDFChart.java

@@ -253,6 +253,9 @@ public abstract class XDDFChart extends POIXMLDocumentPart implements TextContai
             chart.setAutoTitleDeleted(CTBoolean.Factory.newInstance());
         }
         chart.getAutoTitleDeleted().setVal(deleted);
+        if (deleted && chart.isSetTitle()) {
+            chart.unsetTitle();
+        }
     }
 
     /**
@@ -321,7 +324,15 @@ public abstract class XDDFChart extends POIXMLDocumentPart implements TextContai
         }
     }
 
-   /**
+    /**
+     * Remove the chart title.
+     * @since POI 4.1.3
+     */
+    public void removeTitle() {
+        setAutoTitleDeleted(true);
+    }
+
+    /**
     * Get or Add chart 3D view into chart
     *
     * @return this method will add 3D view

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

@@ -137,6 +137,7 @@ public class TestXSSFChartTitle {
         XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("chartTitle_withTitle.xlsx");
         XSSFChart chart = getChartFromWorkbook(wb, "Sheet1");
         assertNotNull(chart);
+        assertNotNull(chart.getTitle());
         XSSFRichTextString originalTitle = chart.getTitleText();
         assertNotNull(originalTitle);
         final String myTitle = "My chart title";
@@ -154,6 +155,7 @@ public class TestXSSFChartTitle {
         XSSFChart chart = getChartFromWorkbook(wb, "Sheet1");
         assertNotNull(chart);
         assertNull(chart.getTitleText());
+        assertNull(chart.getTitle());
         final String myTitle = "My chart title";
         chart.setTitleText(myTitle);
         XSSFRichTextString queryTitle = chart.getTitleText();
@@ -176,4 +178,30 @@ public class TestXSSFChartTitle {
         wb.close();
     }
 
+    @Test
+    public void testRemovingFromExistingChartNoTitle() throws IOException {
+        XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("chartTitle_noTitle.xlsx");
+        XSSFChart chart = getChartFromWorkbook(wb, "Sheet1");
+        assertNotNull(chart);
+        assertNull(chart.getTitleText());
+        assertNull(chart.getTitle());
+        chart.removeTitle();
+        assertNull(chart.getTitleText());
+        assertNull(chart.getTitle());
+        wb.close();
+    }
+
+    @Test
+    public void testRemovingFromExistingChartWithTitle() throws IOException {
+        XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("chartTitle_withTitle.xlsx");
+        XSSFChart chart = getChartFromWorkbook(wb, "Sheet1");
+        assertNotNull(chart);
+        assertNotNull(chart.getTitleText());
+        assertNotNull(chart.getTitle());
+        chart.removeTitle();
+        assertNull(chart.getTitleText());
+        assertNull(chart.getTitle());
+        wb.close();
+    }
+
 }