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JavaPOS Library
There is a newer version: 1.15.2
//////////////////////////////////////////////////////////////////////
//
// The JavaPOS library source code is now under the CPL license, which 
// is an OSS Apache-like license. The complete license is located at:
//    http://www.ibm.com/developerworks/library/os-cpl.html
//
//////////////////////////////////////////////////////////////////////
//------------------------------------------------------------------------------
//
// THIS SOFTWARE IS PROVIDED AS IS. THE JAVAPOS WORKING GROUP MAKES NO
// REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE SOFTWARE,
// EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED
// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
// NON-INFRINGEMENT.  INDIVIDUAL OR CORPORATE MEMBERS OF THE JAVAPOS
// WORKING GROUP SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT
// OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
//
// ScaleBeanInfo.java - Bean information for the JavaPOS Scale
//    device control
//
//------------------------------------------------------------------------------

package jpos;

import java.beans.*;
import java.lang.reflect.*;

public class ScaleBeanInfo
  extends SimpleBeanInfo
{
  public BeanDescriptor getBeanDescriptor()
  {
    return new BeanDescriptor(jpos.Scale.class);
  }

  public PropertyDescriptor makeProperty(String propertyName)
    throws IntrospectionException
  {
    return new PropertyDescriptor(propertyName, jpos.Scale.class);
  }

  public PropertyDescriptor[] getPropertyDescriptors()
  {
    try
    {
      PropertyDescriptor[] properties =
      {
        // Capabilities
        makeProperty("CapDisplay"),
        makeProperty("CapDisplayText"),
        makeProperty("CapPriceCalculating"),
        makeProperty("CapPowerReporting"),
        makeProperty("CapTareWeight"),
        makeProperty("CapZeroScale"),
        makeProperty("CapStatisticsReporting"),
        makeProperty("CapUpdateStatistics"),
        makeProperty("CapCompareFirmwareVersion"),
        makeProperty("CapStatusUpdate"),
        makeProperty("CapUpdateFirmware"),
        makeProperty("CapFreezeValue"),
        makeProperty("CapReadLiveWeightWithTare"),
        makeProperty("CapSetPriceCalculationMode"),
        makeProperty("CapSetUnitPriceWithWeightUnit"),
        makeProperty("CapSpecialTare"),
        makeProperty("CapTarePriority"),

        // Properties
        makeProperty("MaximumWeight"),
        makeProperty("WeightUnit"),
        makeProperty("AsyncMode"),
        makeProperty("AutoDisable"),
        makeProperty("DataCount"),
        makeProperty("DataEventEnabled"),
        makeProperty("MaxDisplayTextChars"),
        makeProperty("SalesPrice"),
        makeProperty("TareWeight"),
        makeProperty("UnitPrice"),
        makeProperty("PowerNotify"),
        makeProperty("PowerState"),
        makeProperty("ScaleLiveWeight"),
        makeProperty("StatusNotify"),
        makeProperty("ZeroValid"),
        makeProperty("MinimumWeight")
      };

      return properties;
    }
    catch(Exception e)
    {
      return super.getPropertyDescriptors();
    }
  }

  public EventSetDescriptor makeEvent(String eventName)
    throws IntrospectionException, ClassNotFoundException
  {
    String listener = "jpos.events." + eventName + "Listener";
    return new EventSetDescriptor(jpos.Scale.class,
                                  eventName,
                                  Class.forName(listener),
                                  eventName + "Occurred");
  }

  public EventSetDescriptor[] getEventSetDescriptors()
  {
    try
    {
      EventSetDescriptor[] events =
      {
        makeEvent("Data"),
        makeEvent("DirectIO"),
        makeEvent("Error"),
        makeEvent("StatusUpdate")
      };

      return events;
    }
    catch(Exception e)
    {
      return super.getEventSetDescriptors();
    }
  }
}