/* ====================================================================
   Copyright 2003-2004   Apache Software Foundation

   Licensed 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 "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
==================================================================== */

package org.apache.poi.hssf.record.formula;

import org.apache.poi.util.LittleEndian;
import org.apache.poi.hssf.model.Workbook;

/**
 * Boolean (boolean)
 * Stores a (java) boolean value in a formula.
 * @author Paul Krause (pkrause at soundbite dot com)
 * @author Andrew C. Oliver (acoliver at apache dot org)
 * @author Jason Height (jheight at chariot dot net dot au)
 */

public class BoolPtg
    extends Ptg
{
    public final static int  SIZE = 2;
    public final static byte sid  = 0x1d;
    private boolean          field_1_value;

    private String val;

    private BoolPtg() {
      //Required for clone methods
    }

    public BoolPtg(byte [] data, int offset)
    {
        field_1_value = (data[offset + 1] == 1);
    }


    public BoolPtg(String formulaToken) {
        field_1_value = (formulaToken.equals("TRUE"));
    }

    public void setValue(boolean value)
    {
        field_1_value = value;
    }

    public boolean getValue()
    {
        return field_1_value;
    }

    public void writeBytes(byte [] array, int offset)
    {
        array[ offset + 0 ] = sid;
        array[ offset + 1 ] = (byte) (field_1_value ? 1 : 0);
    }

    public int getSize()
    {
        return SIZE;
    }

    public String toFormulaString(Workbook book)
    {
        return field_1_value ? "TRUE" : "FALSE";
    }

    public byte getDefaultOperandClass() {return Ptg.CLASS_VALUE;}

    public Object clone() {
        BoolPtg ptg = new BoolPtg();
        ptg.field_1_value = field_1_value;
        return ptg;
    }
}
