// GreenPOS is a point of sales application designed for touch screens.
// Copyright (C) 2007-2009 Openbravo, S.L.
// http://code.google.com/p/openbravocustom/
//
// This file is part of GreenPOS.
//
// GreenPOS 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.
//
// GreenPOS 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 GreenPOS. 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;
private double scaleDiv=1;
/** Creates a new instance of DeviceScale */
public DeviceScale(Component parent, AppProperties props) {
StringParser sd = new StringParser(props.getProperty("machine.scale"));
try {
scaleDiv = Double.parseDouble(props.getProperty("machine.scaledivider"));
} catch (NumberFormatException nfe) {
} catch (Exception e) {
}
String sScaleType = sd.nextToken(':');
String sScaleParam1 = sd.nextToken(',');
// String sScaleParam2 = sd.nextToken(',');
if ("dialog1".equals(sScaleType)) {
m_scale = new ScaleComm(sScaleParam1);
} else if ("samsungesp".equals(sScaleType)) {
m_scale = new ScaleSamsungEsp(sScaleParam1);
} else if ("fake".equals(sScaleType)) { // a fake scale for debugging purposes
m_scale = new ScaleFake();
} else if ("screen".equals(sScaleType)) { // on screen scale
m_scale = new ScaleDialog(parent);
} else {
m_scale = null;
}
}
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/scaleDiv;
}
}
}
}