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/*
* Copyright (C) 2022 Archie L. Cobbs. All rights reserved.
*/
package org.dellroad.stuff.vaadin7;
/**
* Simple read-only {@link com.vaadin.data.Property} implementation backed by a Java object.
*
*
* The {@link com.vaadin.data.Property} is defined using a {@link PropertyDef} along with a {@link PropertyExtractor}
* that is capable of reading the property's value from the underlying Java object.
*
* @param the type of the underlying Java object
* @param the type of the property
* @see SimpleContainer
* @see SimpleItem
*/
@SuppressWarnings("serial")
public class SimpleProperty extends ReadOnlyProperty implements BackedProperty {
private final T object;
private final PropertyDef propertyDef;
private final PropertyExtractor propertyExtractor;
/**
* Constructor.
*
* @param object underlying Java object
* @param propertyDef property definition
* @param propertyExtractor extracts the property value from {@code object}
* @throws IllegalArgumentException if any parameter is null
*/
public SimpleProperty(T object, PropertyDef propertyDef, PropertyExtractor propertyExtractor) {
if (object == null)
throw new IllegalArgumentException("null object");
if (propertyDef == null)
throw new IllegalArgumentException("null propertyDef");
if (propertyExtractor == null)
throw new IllegalArgumentException("null propertyExtractor");
this.object = object;
this.propertyDef = propertyDef;
this.propertyExtractor = propertyExtractor;
}
@Override
public T getObject() {
return this.object;
}
@Override
public Class getType() {
return this.propertyDef.getType();
}
@Override
public V getValue() {
return this.propertyExtractor.getPropertyValue(this.object, this.propertyDef);
}
}