org.metawidget.vaadin.ui.widgetbuilder.LookupLabel Maven / Gradle / Ivy
// Metawidget (licensed under LGPL)
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package org.metawidget.vaadin.ui.widgetbuilder;
import java.util.Map;
/*
* Label whose values display using a lookup.
*/
public class LookupLabel
extends com.vaadin.ui.Label {
//
// Private members
//
private Map mLookup;
//
// Constructor
//
public LookupLabel( Map lookup ) {
if ( lookup == null ) {
throw new NullPointerException( "lookup" );
}
mLookup = lookup;
}
//
// Public methods
//
/**
* Overridden to display the value using our lookup. The original value is still available
* through getValue.
*/
@Override
public String toString() {
String toString = super.toString();
String lookup = mLookup.get( toString );
if ( lookup != null ) {
return lookup;
}
return toString;
}
}