teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5863:  * This file is Free Software under the GNU AGPL (>=v3) 
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5863:  * documentation coming with Dive4Elements River for details. 
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.exports;
ingo@1979: 
ingo@1979: import org.w3c.dom.Document;
ingo@1979: import org.w3c.dom.Node;
ingo@1979: 
teichmann@5831: import org.dive4elements.artifactdatabase.state.Settings;
teichmann@5831: import org.dive4elements.artifactdatabase.state.Section;
ingo@1979: 
ingo@1979: 
ingo@1979: /**
ingo@1979:  * An implementation of <i>Settings</i> that doesn't take new <i>Section</i>s
ingo@1979:  * and that always creates an empty <b>settings</b> DOM node in its
ingo@1979:  * <i>toXML()</i> operation.
ingo@1979:  *
ingo@1979:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@1979:  */
ingo@1979: public class EmptySettings implements Settings {
ingo@1979: 
ingo@1979:     public EmptySettings() {
ingo@1979:     }
ingo@1979: 
ingo@1979: 
ingo@1979:     /**
ingo@1979:      * This method has no function. It is not implemented!
ingo@1979:      *
ingo@1979:      * @param section A Section.
ingo@1979:      */
ingo@1979:     @Override
ingo@1979:     public void addSection(Section section) {
ingo@1979:         // do nothing
ingo@1979:     }
ingo@1979: 
ingo@1979: 
ingo@1979:     /**
ingo@1979:      * Always returns 0.
ingo@1979:      *
ingo@1979:      * @return 0.
ingo@1979:      */
ingo@1979:     @Override
ingo@1979:     public int getSectionCount() {
ingo@1979:         return 0;
ingo@1979:     }
ingo@1979: 
ingo@1979: 
ingo@1979:     /**
ingo@1979:      * This method always returns null. It is not implemented!
ingo@1979:      *
ingo@1979:      * @param pos A position.
ingo@1979:      *
ingo@1979:      * @return null.
ingo@1979:      */
ingo@1979:     @Override
ingo@1979:     public Section getSection(int pos) {
ingo@1979:         return null;
ingo@1979:     }
ingo@1979: 
ingo@1979: 
ingo@1979:     /**
ingo@1986:      * This method has no function. It is not implemented!
ingo@1986:      */
ingo@1986:     @Override
ingo@1986:     public void removeSection(Section section) {
ingo@1986:         // do nothing
ingo@1986:     }
ingo@1986: 
ingo@1986: 
ingo@1986:     /**
ingo@1979:      * This method creates an empty <i>settings</i> DOM node.
ingo@1979:      *
ingo@1979:      * @param parent A parent DOM node.
ingo@1979:      */
ingo@1979:     @Override
ingo@1979:     public void toXML(Node parent) {
ingo@1979:         Document owner = parent.getOwnerDocument();
ingo@1986:         parent.appendChild(owner.createElement("settings"));
ingo@1979:     }
ingo@1979: }
sascha@3083: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :