/*********************************************************************
*
* Copyright (C) 2004 Andrew Khan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
package jxl.biff;
import jxl.common.Logger;
import jxl.biff.IntegerHelper;
/**
* Class which parses the binary data associated with Data Validity (DVal)
* setting
*/
public class DValParser
{
/**
* The logger
*/
private static Logger logger = Logger.getLogger(DValParser.class);
// The option masks
private static int PROMPT_BOX_VISIBLE_MASK = 0x1;
private static int PROMPT_BOX_AT_CELL_MASK = 0x2;
private static int VALIDITY_DATA_CACHED_MASK = 0x4;
/**
* Prompt box visible
*/
private boolean promptBoxVisible;
/**
* Empty cells allowed
*/
private boolean promptBoxAtCell;
/**
* Cell validity data cached in following DV records
*/
private boolean validityDataCached;
/**
* The number of following DV records
*/
private int numDVRecords;
/**
* The object id of the associated down arrow
*/
private int objectId;
/**
* Constructor
*/
public DValParser(byte[] data)
{
int options = IntegerHelper.getInt(data[0], data[1]);
promptBoxVisible = (options & PROMPT_BOX_VISIBLE_MASK) != 0;
promptBoxAtCell = (options & PROMPT_BOX_AT_CELL_MASK) != 0;
validityDataCached = (options & VALIDITY_DATA_CACHED_MASK) != 0;
objectId = IntegerHelper.getInt(data[10], data[11], data[12], data[13]);
numDVRecords = IntegerHelper.getInt(data[14], data[15],
data[16], data[17]);
}
/**
* Constructor
*/
public DValParser(int objid, int num)
{
objectId = objid;
numDVRecords = num;
validityDataCached = true;
}
/**
* Gets the data
*/
public byte[] getData()
{
byte[] data = new byte[18];
int options = 0;
if (promptBoxVisible)
{
options |= PROMPT_BOX_VISIBLE_MASK;
}
if (promptBoxAtCell)
{
options |= PROMPT_BOX_AT_CELL_MASK;
}
if (validityDataCached)
{
options |= VALIDITY_DATA_CACHED_MASK;
}
IntegerHelper.getTwoBytes(options, data, 0);
IntegerHelper.getFourBytes(objectId, data, 10);
IntegerHelper.getFourBytes(numDVRecords, data, 14);
return data;
}
/**
* Called when a remove row or column results in one of DV records being
* removed
*/
public void dvRemoved()
{
numDVRecords--;
}
/**
* Accessor for the number of DV records
*
* @return the number of DV records for this list
*/
public int getNumberOfDVRecords()
{
return numDVRecords;
}
/**
* Accessor for the object id
*
* @return the object id
*/
public int getObjectId()
{
return objectId;
}
/**
* Called when adding a DV record on a copied DVal
*/
public void dvAdded()
{
numDVRecords++;
}
}
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