package org.geotools.styling.builder;
import org.geotools.Builder;
import org.geotools.factory.CommonFactoryFinder;
import org.geotools.styling.Extent;
import org.geotools.styling.StyleFactory;
/**
*
*
* @source $URL$
*/
public class ExtentBuilder<P> implements Builder<Extent> {
private StyleFactory sf = CommonFactoryFinder.getStyleFactory(null);
private P parent;
boolean unset = true; // current value is null
private String name;
private String value;
public ExtentBuilder() {
this(null);
}
public ExtentBuilder(P parent) {
this.parent = parent;
reset();
}
public Extent build() {
if (unset) {
return null;
}
Extent extent = sf.createExtent(name, value);
return extent;
}
public P end() {
return parent;
}
public ExtentBuilder<P> reset() {
this.name = null;
this.value = null;
unset = false;
return this;
}
public ExtentBuilder<P> reset(Extent extent) {
if (extent == null) {
return reset();
}
this.value = extent.getValue();
this.name = extent.getName();
unset = false;
return this;
}
public ExtentBuilder<P> unset() {
this.name = null;
this.value = null;
unset = true;
return this;
}
}