Patch from Ugo to get and set the sheet hidden flag (bug #43937)

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@609942 13f79535-47bb-0310-9956-ffa450edef68

src/documentation/content/xdocs/changes.xml

@@ -36,6 +36,7 @@
 
 		<!-- Don't forget to update status.xml too! -->
         <release version="3.0.2-FINAL" date="2008-??-??">
+            <action dev="POI-DEVELOPERS" type="add">43937 - Add support for hiding and un-hiding sheets, and checking their current hidden status</action>
             <action dev="POI-DEVELOPERS" type="fix">44167 - Fix for non-contiguous named ranges</action>
             <action dev="POI-DEVELOPERS" type="fix">44070 - Fix for shifting comments when shifting rows</action>
         </release>

src/documentation/content/xdocs/status.xml

@@ -33,6 +33,7 @@
 	<!-- Don't forget to update changes.xml too! -->
     <changes>
         <release version="3.0.2-FINAL" date="2008-??-??">
+            <action dev="POI-DEVELOPERS" type="add">43937 - Add support for hiding and un-hiding sheets, and checking their current hidden status</action>
             <action dev="POI-DEVELOPERS" type="fix">44167 - Fix for non-contiguous named ranges</action>
             <action dev="POI-DEVELOPERS" type="fix">44070 - Fix for shifting comments when shifting rows</action>
         </release>

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

@@ -542,6 +542,29 @@ public class Workbook implements Model
         .getSheetname();
     }
 
+    /**
+     * gets the hidden flag for a given sheet.
+     *
+     * @param sheetnum the sheet number (0 based)
+     * @return True if sheet is hidden
+     */
+
+    public boolean isSheetHidden(int sheetnum) {
+        BoundSheetRecord bsr = ( BoundSheetRecord ) boundsheets.get(sheetnum);
+        return bsr.isHidden();
+    }
+
+    /**
+     * Hide or unhide a sheet
+     * 
+     * @param sheetnum The sheet number
+     * @param hidden True to mark the sheet as hidden, false otherwise
+     */
+    
+    public void setSheetHidden(int sheetnum, boolean hidden) {
+        BoundSheetRecord bsr = ( BoundSheetRecord ) boundsheets.get(sheetnum);
+        bsr.setHidden(hidden);
+    }
     /**
      * get the sheet's index
      * @param name  sheet name

src/java/org/apache/poi/hssf/record/BoundSheetRecord.java

@@ -19,6 +19,7 @@
 
 package org.apache.poi.hssf.record;
 
+import org.apache.poi.util.BitFieldFactory;
 import org.apache.poi.util.LittleEndian;
 import org.apache.poi.util.StringUtil;
 
@@ -36,6 +37,7 @@ import org.apache.poi.util.StringUtil;
 public class BoundSheetRecord
         extends Record
 {
+    private static final short HIDDEN_FLAG_MASK = 0x01;
     public final static short sid = 0x85;
     private int field_1_position_of_BOF;
     private short field_2_option_flags;
@@ -301,4 +303,12 @@ public class BoundSheetRecord
     {
         return sid;
     }
+
+    public boolean isHidden() {
+	    return BitFieldFactory.getInstance(HIDDEN_FLAG_MASK).isSet(field_2_option_flags);
+    }
+
+    public void setHidden(boolean hidden) {
+	    field_2_option_flags = BitFieldFactory.getInstance(HIDDEN_FLAG_MASK).setShortBoolean(field_2_option_flags, hidden);
+    }
 }

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

@@ -445,6 +445,35 @@ public class HSSFWorkbook extends POIDocument
         return workbook.getSheetName(sheet);
     }
 
+    /**
+     * check whether a sheet is hidden
+     * @param sheet Number
+     * @return True if sheet is hidden
+     */
+
+    public boolean isSheetHidden(int sheet) {
+        if (sheet > (sheets.size() - 1))
+        {
+            throw new RuntimeException("Sheet out of bounds");
+        }
+        return workbook.isSheetHidden(sheet);
+    }
+
+    /**
+     * Hide or unhide a sheet
+     * 
+     * @param sheetnum The sheet number
+     * @param hidden True to mark the sheet as hidden, false otherwise
+     */
+
+    public void setSheetHidden(int sheet, boolean hidden) {
+        if (sheet > (sheets.size() - 1))
+        {
+            throw new RuntimeException("Sheet out of bounds");
+        }
+        workbook.setSheetHidden(sheet,hidden);
+    }
+    
     /*
      * get the sheet's index
      * @param name  sheet name

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

@@ -19,12 +19,11 @@ package org.apache.poi.hssf.usermodel;
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-
-import org.apache.poi.poifs.filesystem.POIFSFileSystem;
 
 import junit.framework.TestCase;
 
+import org.apache.poi.poifs.filesystem.POIFSFileSystem;
+
 /**
  * Tests for how HSSFWorkbook behaves with XLS files
  *  with a WORKBOOK directory entry (instead of the more
@@ -34,11 +33,21 @@ public class TestSheetHiding extends TestCase {
 	private String dirPath;
 	private String xlsHidden = "TwoSheetsOneHidden.xls";
 	private String xlsShown  = "TwoSheetsNoneHidden.xls";
+	private HSSFWorkbook wbH;
+	private HSSFWorkbook wbU;
 
 	protected void setUp() throws Exception {
 		super.setUp();
-		
-        dirPath = System.getProperty("HSSF.testdata.path");
+
+		dirPath = System.getProperty("HSSF.testdata.path");
+		FileInputStream isH = new FileInputStream(dirPath + "/" + xlsHidden);
+		POIFSFileSystem fsH = new POIFSFileSystem(isH);
+
+		FileInputStream isU = new FileInputStream(dirPath + "/" + xlsShown);
+		POIFSFileSystem fsU = new POIFSFileSystem(isU);
+
+		wbH = new HSSFWorkbook(fsH);
+		wbU = new HSSFWorkbook(fsU);
 	}
 
 	/**
@@ -47,36 +56,27 @@ public class TestSheetHiding extends TestCase {
 	 *  the hidden flags are
 	 */
 	public void testTextSheets() throws Exception {
-		FileInputStream isH = new FileInputStream(dirPath + "/" + xlsHidden);
-		POIFSFileSystem fsH = new POIFSFileSystem(isH);
-		
-		FileInputStream isU = new FileInputStream(dirPath + "/" + xlsShown);
-		POIFSFileSystem fsU = new POIFSFileSystem(isU);
-
-		HSSFWorkbook wbH = new HSSFWorkbook(fsH);
-		HSSFWorkbook wbU = new HSSFWorkbook(fsU);
-		
 		// Both should have two sheets
 		assertEquals(2, wbH.sheets.size());
 		assertEquals(2, wbU.sheets.size());
-		
+
 		// All sheets should have one row
 		assertEquals(0, wbH.getSheetAt(0).getLastRowNum());
 		assertEquals(0, wbH.getSheetAt(1).getLastRowNum());
 		assertEquals(0, wbU.getSheetAt(0).getLastRowNum());
 		assertEquals(0, wbU.getSheetAt(1).getLastRowNum());
-		
+
 		// All rows should have one column
 		assertEquals(1, wbH.getSheetAt(0).getRow(0).getLastCellNum());
 		assertEquals(1, wbH.getSheetAt(1).getRow(0).getLastCellNum());
 		assertEquals(1, wbU.getSheetAt(0).getRow(0).getLastCellNum());
 		assertEquals(1, wbU.getSheetAt(1).getRow(0).getLastCellNum());
-		
+
 		// Text should be sheet based
-		assertEquals("Sheet1A1", wbH.getSheetAt(0).getRow(0).getCell((short)0).getStringCellValue());
-		assertEquals("Sheet2A1", wbH.getSheetAt(1).getRow(0).getCell((short)0).getStringCellValue());
-		assertEquals("Sheet1A1", wbU.getSheetAt(0).getRow(0).getCell((short)0).getStringCellValue());
-		assertEquals("Sheet2A1", wbU.getSheetAt(1).getRow(0).getCell((short)0).getStringCellValue());
+		assertEquals("Sheet1A1", wbH.getSheetAt(0).getRow(0).getCell((short)0).getRichStringCellValue().getString());
+		assertEquals("Sheet2A1", wbH.getSheetAt(1).getRow(0).getCell((short)0).getRichStringCellValue().getString());
+		assertEquals("Sheet1A1", wbU.getSheetAt(0).getRow(0).getCell((short)0).getRichStringCellValue().getString());
+		assertEquals("Sheet2A1", wbU.getSheetAt(1).getRow(0).getCell((short)0).getRichStringCellValue().getString());
 	}
 
 	/**
@@ -84,7 +84,10 @@ public class TestSheetHiding extends TestCase {
 	 *  as expected
 	 */
 	public void testHideUnHideFlags() throws Exception {
-		// TODO
+		assertTrue(wbH.isSheetHidden(0));
+		assertFalse(wbH.isSheetHidden(1));
+		assertFalse(wbU.isSheetHidden(0));
+		assertFalse(wbU.isSheetHidden(1));
 	}
 
 	/**
@@ -92,7 +95,15 @@ public class TestSheetHiding extends TestCase {
 	 *  one hidden
 	 */
 	public void testHide() throws Exception {
-		// TODO
+		wbU.setSheetHidden(0, true);
+		assertTrue(wbU.isSheetHidden(0));
+		assertFalse(wbU.isSheetHidden(1));
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		wbU.write(out);
+		out.close();
+		HSSFWorkbook wb2 = new HSSFWorkbook(new ByteArrayInputStream(out.toByteArray()));
+		assertTrue(wb2.isSheetHidden(0));
+		assertFalse(wb2.isSheetHidden(1));
 	}
 
 	/**
@@ -100,6 +111,14 @@ public class TestSheetHiding extends TestCase {
 	 *  none hidden
 	 */
 	public void testUnHide() throws Exception {
-		// TODO
+		wbH.setSheetHidden(0, false);
+		assertFalse(wbH.isSheetHidden(0));
+		assertFalse(wbH.isSheetHidden(1));
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		wbH.write(out);
+		out.close();
+		HSSFWorkbook wb2 = new HSSFWorkbook(new ByteArrayInputStream(out.toByteArray()));
+		assertFalse(wb2.isSheetHidden(0));
+		assertFalse(wb2.isSheetHidden(1));
 	}
 }