AOO410/main/xmerge/source/pexcel/java/org/openoffice/xmerge/converter/xml/sxc/pexcel/records/Window1.java

/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
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 * specific language governing permissions and limitations
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package org.openoffice.xmerge.converter.xml.sxc.pexcel.records;

import java.io.OutputStream;
import java.io.InputStream;
import java.io.IOException;

import org.openoffice.xmerge.util.Debug;
import org.openoffice.xmerge.util.EndianConverter;
import org.openoffice.xmerge.converter.xml.sxc.pexcel.PocketExcelConstants;


/**
 * Represents a BIFF REcord that describes workbook window attributes 
 */
public class Window1 implements BIFFRecord {

    private byte[] grbit 	= new byte[2];
    private byte[] itabCur	= new byte[2];		// index of selected worksheet
    
	/**
 	 * Constructor
 	 */
    public Window1() {
		grbit	= EndianConverter.writeShort((short) 0);
		itabCur	= EndianConverter.writeShort((short) 0);
    }

   	/**
 	 * Constructs a Window1 Record from an <code>InputStream</code> 
 	 *
 	 * @param	is InputStream containing a Window1 Record 
 	 */
    public Window1(InputStream is) throws IOException{
		read(is);	
    }
	
    /**
	 * Set the number of the active sheet
	 *
	 * @param activeSheet number of the active sheet 
	 */
    public void setActiveSheet(int activeSheet) {
        itabCur = EndianConverter.writeShort((short) activeSheet);
    }
	
    /**
	 * Get the number of the active sheet 
	 *
	 * @return 	 number of the active sheet
	 */
    public int getActiveSheet() {
        return EndianConverter.readShort(itabCur);
    }	

    /**
	 * Get the hex code for this particular <code>BIFFRecord</code> 
	 *
	 * @return the hex code for <code>Window1</code>
	 */
    public short getBiffType() {
        return PocketExcelConstants.WINDOW_INFO;
    }
    
   	/**
 	 * Reads a Window1 Record from an <code>InputStream</code> 
 	 *
 	 * @param	is InputStream containing a Window1 Record 
 	 */
    public int read(InputStream input) throws IOException {
		
        int numOfBytesRead	= input.read(grbit);
        numOfBytesRead		+= input.read(itabCur);
                
        Debug.log(Debug.TRACE,"\tgrbit : "+ EndianConverter.readShort(grbit) + 
                            " itabCur : " + EndianConverter.readShort(itabCur));
                            
        return numOfBytesRead;        
    }
    
    public void write(OutputStream output) throws IOException {

		output.write(getBiffType());
		output.write(grbit);
		output.write(itabCur);

		Debug.log(Debug.TRACE,"Writing Window1 record");
    }
}