// uniCenta oPOS - Touch Friendly Point Of Sale
// Copyright (c) 2009-2013 uniCenta & previous Openbravo POS works
// http://www.unicenta.net/unicentaopos
//
// This file is part of uniCenta oPOS
//
// uniCenta oPOS is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// uniCenta oPOS 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with uniCenta oPOS. If not, see <http://www.gnu.org/licenses/>.
package com.openbravo.pos.scale;
import com.openbravo.pos.forms.AppLocal;
import com.openbravo.pos.forms.AppProperties;
import com.openbravo.pos.util.StringParser;
import java.awt.Component;
public class DeviceScale {
private Scale m_scale;
/** Creates a new instance of DeviceScale */
public DeviceScale(Component parent, AppProperties props) {
StringParser sd = new StringParser(props.getProperty("machine.scale"));
String sScaleType = sd.nextToken(':');
String sScaleParam1 = sd.nextToken(',');
// String sScaleParam2 = sd.nextToken(',');
switch (sScaleType) {
case "dialog1":
m_scale = new ScaleComm(sScaleParam1);
break;
case "samsungesp":
m_scale = new ScaleCasioPD1(sScaleParam1);
break;
case "fake":
// a fake scale for debugging purposes
m_scale = new ScaleFake();
break;
case "screen":
// on screen scale
m_scale = new ScaleDialog(parent);
break;
default:
m_scale = null;
break;
}
}
public boolean existsScale() {
return m_scale != null;
}
public Double readWeight() throws ScaleException {
if (m_scale == null) {
throw new ScaleException(AppLocal.getIntString("scale.notdefined"));
} else {
Double result = m_scale.readWeight();
if (result == null) {
return null; // Canceled by the user / scale
} else if (result.doubleValue() < 0.002) {
// invalid result. nothing on the scale
throw new ScaleException(AppLocal.getIntString("scale.invalidvalue"));
} else {
// valid result
return result;
}
}
}
}