Fix for Bug#28328

git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353773 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/model/Workbook.java

@@ -100,6 +100,7 @@ public class Workbook implements Model
     private boolean            uses1904datewindowing  = false;  // whether 1904 date windowing is being used
     private DrawingManager2    drawingManager;
     private List               escherBSERecords = new ArrayList();  // EscherBSERecord
+    private WindowOneRecord windowOne;
 
     private static POILogger   log = POILogFactory.getLogger(Workbook.class);
 
@@ -215,6 +216,10 @@ public class Workbook implements Model
                     if (log.check( POILogger.DEBUG ))
                         log.log(DEBUG, "found palette record at " + k);
                     retval.records.setPalettepos( k );
+                case WindowOneRecord.sid:
+                    if (log.check( POILogger.DEBUG ))
+                        log.log(DEBUG, "found WindowOneRecord at " + k);
+                    retval.windowOne = (WindowOneRecord) rec;
                 default :
             }
             records.add(rec);
@@ -226,6 +231,10 @@ public class Workbook implements Model
         //        }
 
         retval.records.setRecords(records);
+        
+        if (retval.windowOne == null) {
+            retval.windowOne = (WindowOneRecord) retval.createWindowOne();
+        }
         if (log.check( POILogger.DEBUG ))
             log.log(DEBUG, "exit create workbook from existing file function");
         return retval;
@@ -259,7 +268,8 @@ public class Workbook implements Model
         records.add( retval.createPassword() );
         records.add( retval.createProtectionRev4() );
         records.add( retval.createPasswordRev4() );
-        records.add( retval.createWindowOne() );
+        retval.windowOne = (WindowOneRecord) retval.createWindowOne();
+        records.add( retval.windowOne );
         records.add( retval.createBackup() );
         retval.records.setBackuppos( records.size() - 1 );
         records.add( retval.createHideObj() );
@@ -2165,6 +2175,10 @@ public class Workbook implements Model
 
     }
     
+    public WindowOneRecord getWindowOne() {
+        return windowOne;
+    }
+    
     public int addBSERecord(EscherBSERecord e)
     {
         createDrawingGroup();

src/java/org/apache/poi/hssf/usermodel/HSSFWorkbook.java

@@ -252,6 +252,48 @@ public class HSSFWorkbook
         workbook.setSheetOrder(sheetname, pos);
     }
     
+    /**
+     * sets the tab whose data is actually seen when the sheet is opened.
+     * This may be different from the "selected sheet" since excel seems to
+     * allow you to show the data of one sheet when another is seen "selected"
+     * in the tabs (at the bottom).
+     * @see org.apache.poi.hssf.usermodel.HSSFSheet#setSelected(boolean)
+     * @param index
+     */
+    public void setSelectedTab(short index) {
+        workbook.getWindowOne().setSelectedTab(index);
+    }
+    
+    /**
+     * gets the tab whose data is actually seen when the sheet is opened.
+     * This may be different from the "selected sheet" since excel seems to
+     * allow you to show the data of one sheet when another is seen "selected"
+     * in the tabs (at the bottom).
+     * @see org.apache.poi.hssf.usermodel.HSSFSheet#setSelected(boolean)
+     * @return
+     */
+    public short getSelectedTab() {
+        return workbook.getWindowOne().getSelectedTab();
+    }
+    
+    /**
+     * sets the first tab that is displayed in the list of tabs
+     * in excel.
+     * @param index
+     */
+    public void setDisplayedTab(short index) {
+        workbook.getWindowOne().setDisplayedTab(index);
+    }
+    
+    /**
+     * sets the first tab that is displayed in the list of tabs
+     * in excel.
+     * @return
+     */
+    public short getDisplayedTab() {
+        return workbook.getWindowOne().getDisplayedTab();
+    }
+
     public final static byte ENCODING_COMPRESSED_UNICODE = 0;
     public final static byte ENCODING_UTF_16             = 1;
 

src/testcases/org/apache/poi/hssf/usermodel/TestHSSFWorkbook.java

@@ -64,4 +64,24 @@ public class TestHSSFWorkbook extends TestCase
         c.createSheet("Sheet4");
 
     }
+    
+    public void testWindowOneDefaults() {
+        HSSFWorkbook b = new HSSFWorkbook( );
+        try {
+            assertEquals(b.getSelectedTab(), 0);
+            assertEquals(b.getDisplayedTab(), 0);
+        } catch (NullPointerException npe) {
+            fail("WindowOneRecord in Workbook is probably not initialized");
+        }
+    }
+    
+    public void testSheetSelection() {
+        HSSFWorkbook b = new HSSFWorkbook();
+        b.createSheet("Sheet One");
+        HSSFSheet s = b.createSheet("Sheet Two");
+        b.setSelectedTab((short) 1);
+        b.setDisplayedTab((short) 1);
+        assertEquals(b.getSelectedTab(), 1);
+        assertEquals(b.getDisplayedTab(), 1);
+    }
 }