/*
* Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton,
* Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
*
* THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
* WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
* NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
* IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
* CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
* NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
* DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
* OR MODIFICATIONS.
* THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
* USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
* PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
* AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
*/
package org.csstudio.sds.internal.model;
import org.csstudio.sds.model.PropertyTypesEnum;
import org.csstudio.sds.model.WidgetProperty;
import org.csstudio.sds.model.WidgetPropertyCategory;
/**
* A property, which is able to handle Double values.
*
* @author Sven Wende
* @version $Revision: 1.1 $
*
*/
public final class DoubleProperty extends WidgetProperty {
/**
* Lower border for the property value.
*/
private double _min;
/**
* Upper border for the property value.
*/
private double _max;
public DoubleProperty(final String shortDescription, String longDescription, final WidgetPropertyCategory category, final double defaultValue, double min, double max) {
super(PropertyTypesEnum.DOUBLE, shortDescription, longDescription, category, defaultValue, null);
assert min<=max;
_min = min;
_max = max;
}
/**
* Constructor.
*
* @param description
* a description
* @param category
* a category
* @param defaultValue
* the default value
*/
public DoubleProperty(final String description,
final WidgetPropertyCategory category, final double defaultValue) {
this(description, null, category, defaultValue, -Double.MAX_VALUE, Double.MAX_VALUE);
}
/**
* Constructor.
*
* @param description
* a description
* @param category
* a category
* @param defaultValue
* the default value
* @param minValue
* the lower border for the property value
* @param maxValue
* the upper border for the property value
*/
public DoubleProperty(final String description,
final WidgetPropertyCategory category, final double defaultValue,
final double minValue, final double maxValue) {
this(description, null, category, defaultValue, minValue, maxValue);
}
/**
* {@inheritDoc}
*/
@Override
public Object checkValue(final Object value) {
assert value != null : "value!=null"; //$NON-NLS-1$
Double acceptedValue = null;
// check type
if (!(value instanceof Double)) {
if (value instanceof Number) {
acceptedValue = ((Number) value).doubleValue();
} else {
try {
acceptedValue = Double.parseDouble(value.toString());
} catch (NumberFormatException e) {
acceptedValue = null;
}
}
} else {
acceptedValue = (Double) value;
}
// check borders
if (acceptedValue != null) {
if (acceptedValue > _max) {
acceptedValue = _max;
} else if (acceptedValue < _min) {
acceptedValue = _min;
}
}
return acceptedValue;
}
/**
* {@inheritDoc}
*/
@Override
public Class[] getCompatibleJavaTypes() {
return new Class[]{Number.class};
}
}